# This is an example configuration file for the LVM2 system.
# It contains the default settings that would be used if there was no
# /etc/lvm/lvm.conf file.
#
# Refer to 'man lvm.conf' for further information including the file layout.
#
# Refer to 'man lvm.conf' for information about how settings configured in
# this file are combined with built-in values and command line options to
# arrive at the final values used by LVM.
#
# Refer to 'man lvmconfig' for information about displaying the built-in
# and configured values used by LVM.
#
# If a default value is set in this file (not commented out), then a
# new version of LVM using this file will continue using that value,
# even if the new version of LVM changes the built-in default value.
#
# To put this file in a different directory and override /etc/lvm set
# the environment variable LVM_SYSTEM_DIR before running the tools.
#
# N.B. Take care that each setting only appears once if uncommenting
# example settings in this file.
# Configuration section config.
# How LVM configuration settings are handled.
config {
# Configuration option config/checks.
# If enabled, any LVM configuration mismatch is reported.
# This implies checking that the configuration key is understood by
# LVM and that the value of the key is the proper type. If disabled,
# any configuration mismatch is ignored and the default value is used
# without any warning (a message about the configuration key not being
# found is issued in verbose mode only).
# This configuration option has an automatic default value.
# checks = 1
# Configuration option config/validate_metadata.
# Allows to select the level of validation after metadata transformation.
# Validation takes extra CPU time to verify internal consistency.
# Accepted values:
# full
# Do a full metadata validation before disk write.
# none
# Skip any checks (unrecommended, slightly faster).
#
# This configuration option is advanced.
# This configuration option has an automatic default value.
# validate_metadata = "full"
# Configuration option config/abort_on_errors.
# Abort the LVM process if a configuration mismatch is found.
# This configuration option has an automatic default value.
# abort_on_errors = 0
# Configuration option config/profile_dir.
# Directory where LVM looks for configuration profiles.
# This configuration option has an automatic default value.
# profile_dir = "/etc/lvm/profile"
}
# Configuration section devices.
# How LVM uses block devices.
devices {
# Configuration option devices/dir.
# Directory in which to create volume group device nodes.
# Commands also accept this as a prefix on volume group names.
# This configuration option is advanced.
# This configuration option has an automatic default value.
# dir = "/dev"
# Configuration option devices/scan.
# Directories containing device nodes to use with LVM.
# This configuration option is advanced.
# This configuration option has an automatic default value.
# scan = [ "/dev" ]
# Configuration option devices/obtain_device_list_from_udev.
# Obtain the list of available devices from udev.
# This avoids opening or using any inapplicable non-block devices or
# subdirectories found in the udev directory. Any device node or
# symlink not managed by udev in the udev directory is ignored. This
# setting applies only to the udev-managed device directory; other
# directories will be scanned fully. LVM needs to be compiled with
# udev support for this setting to apply.
# This configuration option has an automatic default value.
# obtain_device_list_from_udev = 0
# Configuration option devices/external_device_info_source.
# Enable device information from udev.
# If set to "udev", lvm will supplement its own native device information
# with information from libudev. This can potentially improve the detection
# of MD component devices and multipath component devices.
# This configuration option has an automatic default value.
# external_device_info_source = "none"
# Configuration option devices/hints.
# Use a local file to remember which devices have PVs on them.
# Some commands will use this as an optimization to reduce device
# scanning, and will only scan the listed PVs. Removing the hint file
# will cause lvm to generate a new one. Disable hints if PVs will
# be copied onto devices using non-lvm commands, like dd.
#
# Accepted values:
# all
# Use all hints.
# none
# Use no hints.
#
# This configuration option has an automatic default value.
# hints = "all"
# Configuration option devices/preferred_names.
# Select which path name to display for a block device.
# If multiple path names exist for a block device, and LVM needs to
# display a name for the device, the path names are matched against
# each item in this list of regular expressions. The first match is
# used. Try to avoid using undescriptive /dev/dm-N names, if present.
# If no preferred name matches, or if preferred_names are not defined,
# the following built-in preferences are applied in order until one
# produces a preferred name:
# Prefer names with path prefixes in the order of:
# /dev/mapper, /dev/disk, /dev/dm-*, /dev/block.
# Prefer the name with the least number of slashes.
# Prefer a name that is a symlink.
# Prefer the path with least value in lexicographical order.
#
# Example
# preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
#
# This configuration option does not have a default value defined.
# Configuration option devices/use_devicesfile.
# Enable or disable the use of a devices file.
# When enabled, lvm will only use devices that
# are listed in the devices file. A devices file will
# be used, regardless of this setting, when the --devicesfile
# option is set to a specific file name.
# This configuration option has an automatic default value.
# use_devicesfile = 1
# Configuration option devices/devicesfile.
# The name of the system devices file, listing devices that LVM should use.
# This should not be used to select a non-system devices file.
# The --devicesfile option is intended for alternative devices files.
# This configuration option has an automatic default value.
# devicesfile = "system.devices"
# Configuration option devices/devicesfile_backup_limit.
# The max number of backup files to keep in /etc/lvm/devices/backup.
# LVM creates a backup of the devices file each time a new
# version is created, or each time a modification is detected.
# When the max number of backups is reached, the oldest are
# removed to remain at the limit. Set to 0 to disable backups.
# Only the system devices file is backed up.
# This configuration option has an automatic default value.
# devicesfile_backup_limit = 50
# Configuration option devices/search_for_devnames.
# Look outside of the devices file for missing devname entries.
# A devname entry is used for a device that does not have a stable
# device id, e.g. wwid, so the unstable device name is used as
# the device id. After reboot, or if the device is reattached,
# the device name may change, in which case lvm will not find
# the expected PV on the device listed in the devices file.
# This setting controls whether lvm will search other devices,
# outside the devices file, to look for the missing PV on a
# renamed device. If "none", lvm will not look at other devices,
# and the PV may appear to be missing. If "auto", lvm will look
# at other devices, but only those that are likely to have the PV.
# If "all", lvm will look at all devices on the system.
# This configuration option has an automatic default value.
# search_for_devnames = "all"
# Configuration option devices/device_ids_refresh.
# Find PVs on new devices and update the device IDs in the devices file.
# If PVs are restored or moved to a new system with new devices, but
# an old system.devices remains with old device IDs, then search for
# the PVIDs on new devices and update the device IDs in system.devices.
# The original device IDs must also not be found on the new system.
# See device_ids_refresh_check for conditions that trigger the refresh.
# This configuration option has an automatic default value.
# device_ids_refresh = 1
# Configuration option devices/device_ids_refresh_checks.
# Conditions that trigger device_ids_refresh to locate PVIDs on new devices.
# product_uuid: refresh if /sys/devices/virtual/dmi/id/product_uuid does not
# match the value saved in system.devices.
# hostname: refresh if hostname does not match the value saved in system.devices.
# (hostname is used if product_uuid is not available.)
# Remove values from this list to prevent lvm from using them.
# This configuration option has an automatic default value.
# device_ids_refresh_checks = [ "product_uuid", "hostname" ]
# Configuration option devices/filter.
# Limit the block devices that are used by LVM commands.
# This is a list of regular expressions used to accept or reject block
# device path names. Each regex is delimited by a vertical bar '|'
# (or any character) and is preceded by 'a' to accept the path, or
# by 'r' to reject the path. The first regex in the list to match the
# path is used, producing the 'a' or 'r' result for the device.
# When multiple path names exist for a block device, if any path name
# matches an 'a' pattern before an 'r' pattern, then the device is
# accepted. If all the path names match an 'r' pattern first, then the
# device is rejected. Unmatching path names do not affect the accept
# or reject decision. If no path names for a device match a pattern,
# then the device is accepted. Be careful mixing 'a' and 'r' patterns,
# as the combination might produce unexpected results (test changes.)
# Run vgscan after changing the filter to regenerate the cache.
#
# Example
# Accept every block device:
# filter = [ "a|.*|" ]
# Reject the cdrom drive:
# filter = [ "r|/dev/cdrom|" ]
# Work with just loopback devices, e.g. for testing:
# filter = [ "a|loop|", "r|.*|" ]
# Accept all loop devices and ide drives except hdc:
# filter = [ "a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|" ]
# Use anchors to be very specific:
# filter = [ "a|^/dev/hda8$|", "r|.*|" ]
#
# This configuration option has an automatic default value.
# filter = [ "a|.*|" ]
# Configuration option devices/global_filter.
# Limit the block devices that are used by LVM system components.
# Because devices/filter may be overridden from the command line, it is
# not suitable for system-wide device filtering, e.g. udev.
# Use global_filter to hide devices from these LVM system components.
# The syntax is the same as devices/filter. Devices rejected by
# global_filter are not opened by LVM.
# This configuration option has an automatic default value.
# global_filter = [ "a|.*|" ]
# Configuration option devices/types.
# List of additional acceptable block device types.
# These are of device type names from /proc/devices, followed by the
# maximum number of partitions.
#
# Example
# types = [ "fd", 16 ]
#
# This configuration option is advanced.
# This configuration option does not have a default value defined.
# Configuration option devices/sysfs_scan.
# Restrict device scanning to block devices appearing in sysfs.
# This is a quick way of filtering out block devices that are not
# present on the system. sysfs must be part of the kernel and mounted.)
# This configuration option has an automatic default value.
# sysfs_scan = 1
# Configuration option devices/scan_lvs.
# Allow LVM LVs to be used as PVs. When enabled, LVM commands will
# scan active LVs to look for other PVs. Caution is required to
# avoid using PVs that belong to guest images stored on LVs.
# When enabled, the LVs scanned should be restricted using the
# devices file or the filter. This option does not enable autoactivation
# of layered VGs, which requires editing LVM udev rules (see LVM_PVSCAN_ON_LVS.)
# This configuration option has an automatic default value.
# scan_lvs = 0
# Configuration option devices/multipath_component_detection.
# Ignore devices that are components of DM multipath devices.
# This configuration option has an automatic default value.
# multipath_component_detection = 1
# Configuration option devices/multipath_wwids_file.
# The path to the multipath wwids file used for multipath component detection.
# Set this to an empty string to disable the use of the multipath wwids file.
# This configuration option has an automatic default value.
# multipath_wwids_file = "/etc/multipath/wwids"
# Configuration option devices/md_component_detection.
# Enable detection and exclusion of MD component devices.
# An MD component device is a block device that MD uses as part
# of a software RAID virtual device. When an LVM PV is created
# on an MD device, LVM must only use the top level MD device as
# the PV, and should ignore the underlying component devices.
# In cases where the MD superblock is located at the end of the
# component devices, it is more difficult for LVM to consistently
# identify an MD component, see the md_component_checks setting.
# This configuration option has an automatic default value.
# md_component_detection = 1
# Configuration option devices/md_component_checks.
# The checks LVM should use to detect MD component devices.
# MD component devices are block devices used by MD software RAID.
#
# Accepted values:
# auto
# LVM will skip scanning the end of devices when it has other
# indications that the device is not an MD component.
# start
# LVM will only scan the start of devices for MD superblocks.
# This does not incur extra I/O by LVM.
# full
# LVM will scan the start and end of devices for MD superblocks.
# This requires an extra read at the end of devices.
#
# This configuration option has an automatic default value.
# md_component_checks = "auto"
# Configuration option devices/fw_raid_component_detection.
# Ignore devices that are components of firmware RAID devices.
# LVM must use an external_device_info_source other than none for this
# detection to execute.
# This configuration option has an automatic default value.
# fw_raid_component_detection = 0
# Configuration option devices/md_chunk_alignment.
# Align the start of a PV data area with md device's stripe-width.
# This applies if a PV is placed directly on an md device.
# default_data_alignment will be overridden if it is not aligned
# with the value detected for this setting.
# This setting is overridden by data_alignment_detection,
# data_alignment, and the --dataalignment option.
# This configuration option has an automatic default value.
# md_chunk_alignment = 1
# Configuration option devices/default_data_alignment.
# Align the start of a PV data area with this number of MiB.
# Set to 1 for 1MiB, 2 for 2MiB, etc. Set to 0 to disable.
# This setting is overridden by data_alignment and the --dataalignment
# option.
# This configuration option has an automatic default value.
# default_data_alignment = 1
# Configuration option devices/data_alignment_detection.
# Align the start of a PV data area with sysfs io properties.
# The start of a PV data area will be a multiple of minimum_io_size or
# optimal_io_size exposed in sysfs. minimum_io_size is the smallest
# request the device can perform without incurring a read-modify-write
# penalty, e.g. MD chunk size. optimal_io_size is the device's
# preferred unit of receiving I/O, e.g. MD stripe width.
# minimum_io_size is used if optimal_io_size is undefined (0).
# If md_chunk_alignment is enabled, that detects the optimal_io_size.
# default_data_alignment and md_chunk_alignment will be overridden
# if they are not aligned with the value detected for this setting.
# This setting is overridden by data_alignment and the --dataalignment
# option.
# This configuration option has an automatic default value.
# data_alignment_detection = 1
# Configuration option devices/data_alignment.
# Align the start of a PV data area with this number of KiB.
# When non-zero, this setting overrides default_data_alignment.
# Set to 0 to disable, in which case default_data_alignment
# is used to align the first PE in units of MiB.
# This setting is overridden by the --dataalignment option.
# This configuration option has an automatic default value.
# data_alignment = 0
# Configuration option devices/data_alignment_offset_detection.
# Shift the start of an aligned PV data area based on sysfs information.
# After a PV data area is aligned, it will be shifted by the
# alignment_offset exposed in sysfs. This offset is often 0, but may
# be non-zero. Certain 4KiB sector drives that compensate for windows
# partitioning will have an alignment_offset of 3584 bytes (sector 7
# is the lowest aligned logical block, the 4KiB sectors start at
# LBA -1, and consequently sector 63 is aligned on a 4KiB boundary).
# This setting is overridden by the --dataalignmentoffset option.
# This configuration option has an automatic default value.
# data_alignment_offset_detection = 1
# Configuration option devices/ignore_suspended_devices.
# Ignore DM devices that have I/O suspended while scanning devices.
# Otherwise, LVM waits for a suspended device to become accessible.
# This should only be needed in recovery situations.
# This configuration option has an automatic default value.
# ignore_suspended_devices = 0
# Configuration option devices/ignore_lvm_mirrors.
# Do not scan 'mirror' LVs to avoid possible deadlocks.
# This avoids possible deadlocks when using the 'mirror' segment type.
# This setting determines whether LVs using the 'mirror' segment type
# are scanned for LVM labels. This affects the ability of mirrors to
# be used as physical volumes. If this setting is enabled, it is
# impossible to create VGs on top of mirror LVs, i.e. to stack VGs on
# mirror LVs. If this setting is disabled, allowing mirror LVs to be
# scanned, it may cause LVM processes and I/O to the mirror to become
# blocked. This is due to the way that the mirror segment type handles
# failures. In order for the hang to occur, an LVM command must be run
# just after a failure and before the automatic LVM repair process
# takes place, or there must be failures in multiple mirrors in the
# same VG at the same time with write failures occurring moments before
# a scan of the mirror's labels. The 'mirror' scanning problems do not
# apply to LVM RAID types like 'raid1' which handle failures in a
# different way, making them a better choice for VG stacking.
# This configuration option has an automatic default value.
# ignore_lvm_mirrors = 1
# Configuration option devices/require_restorefile_with_uuid.
# Allow use of pvcreate --uuid without requiring --restorefile.
# This configuration option has an automatic default value.
# require_restorefile_with_uuid = 1
# Configuration option devices/pv_min_size.
# Minimum size in KiB of block devices which can be used as PVs.
# In a clustered environment all nodes must use the same value.
# Any value smaller than 512KiB is ignored. The previous built-in
# value was 512.
# This configuration option has an automatic default value.
# pv_min_size = 2048
# Configuration option devices/issue_discards.
# Issue discards to PVs that are no longer used by an LV.
# Discards are sent to an LV's underlying physical volumes when the LV
# is no longer using the physical volumes' space, e.g. lvremove,
# lvreduce. Discards inform the storage that a region is no longer
# used. Storage that supports discards advertise the protocol-specific
# way discards should be issued by the kernel (TRIM, UNMAP, or
# WRITE SAME with UNMAP bit set). Not all storage will support or
# benefit from discards, but SSDs and thinly provisioned LUNs
# generally do. If enabled, discards will only be issued if both the
# storage and kernel provide support.
# This configuration option has an automatic default value.
# issue_discards = 0
# Configuration option devices/allow_changes_with_duplicate_pvs.
# Allow VG modification while a PV appears on multiple devices.
# When a PV appears on multiple devices, LVM attempts to choose the
# best device to use for the PV. If the devices represent the same
# underlying storage, the choice has minimal consequence. If the
# devices represent different underlying storage, the wrong choice
# can result in data loss if the VG is modified. Disabling this
# setting is the safest option because it prevents modifying a VG
# or activating LVs in it while a PV appears on multiple devices.
# Enabling this setting allows the VG to be used as usual even with
# uncertain devices.
# This configuration option has an automatic default value.
# allow_changes_with_duplicate_pvs = 0
# Configuration option devices/allow_mixed_block_sizes.
# Allow PVs in the same VG with different logical block sizes.
# When allowed, the user is responsible to ensure that an LV is
# using PVs with matching block sizes when necessary.
# This configuration option has an automatic default value.
# allow_mixed_block_sizes = 0
}
# Configuration section allocation.
# How LVM selects space and applies properties to LVs.
allocation {
# Configuration option allocation/cling_tag_list.
# Advise LVM which PVs to use when searching for new space.
# When searching for free space to extend an LV, the 'cling' allocation
# policy will choose space on the same PVs as the last segment of the
# existing LV. If there is insufficient space and a list of tags is
# defined here, it will check whether any of them are attached to the
# PVs concerned and then seek to match those PV tags between existing
# extents and new extents.
#
# Example
# Use the special tag "@*" as a wildcard to match any PV tag:
# cling_tag_list = [ "@*" ]
# LVs are mirrored between two sites within a single VG, and
# PVs are tagged with either @site1 or @site2 to indicate where
# they are situated:
# cling_tag_list = [ "@site1", "@site2" ]
#
# This configuration option does not have a default value defined.
# Configuration option allocation/maximise_cling.
# Use a previous allocation algorithm.
# Changes made in version 2.02.85 extended the reach of the 'cling'
# policies to detect more situations where data can be grouped onto
# the same disks. This setting can be used to disable the changes
# and revert to the previous algorithm.
# This configuration option has an automatic default value.
# maximise_cling = 1
# Configuration option allocation/use_blkid_wiping.
# Use blkid to detect and erase existing signatures on new PVs and LVs.
# The blkid library can detect more signatures than the native LVM
# detection code, but may take longer. LVM needs to be compiled with
# blkid wiping support for this setting to apply. LVM native detection
# code is currently able to recognize: MD device signatures,
# swap signature, and LUKS signatures. To see the list of signatures
# recognized by blkid, check the output of the 'blkid -k' command.
# This configuration option has an automatic default value.
# use_blkid_wiping = 1
# Configuration option allocation/wipe_signatures_when_zeroing_new_lvs.
# Look for and erase any signatures while zeroing a new LV.
# The --wipesignatures option overrides this setting.
# Zeroing is controlled by the -Z/--zero option, and if not specified,
# zeroing is used by default if possible. Zeroing simply overwrites the
# first 4KiB of a new LV with zeroes and does no signature detection or
# wiping. Signature wiping goes beyond zeroing and detects exact types
# and positions of signatures within the whole LV. It provides a
# cleaner LV after creation as all known signatures are wiped. The LV
# is not claimed incorrectly by other tools because of old signatures
# from previous use. The number of signatures that LVM can detect
# depends on the detection code that is selected (see
# use_blkid_wiping.) Wiping each detected signature must be confirmed.
# When this setting is disabled, signatures on new LVs are not detected
# or erased unless the --wipesignatures option is used directly.
# This configuration option has an automatic default value.
# wipe_signatures_when_zeroing_new_lvs = 1
# Configuration option allocation/mirror_logs_require_separate_pvs.
# Mirror logs and images will always use different PVs.
# The default setting changed in version 2.02.85.
# This configuration option has an automatic default value.
# mirror_logs_require_separate_pvs = 0
# Configuration option allocation/raid_stripe_all_devices.
# Stripe across all PVs when RAID stripes are not specified.
# If enabled, all PVs in the VG or on the command line are used for
# raid0/4/5/6/10 when the command does not specify the number of
# stripes to use.
# This was the default behaviour until release 2.02.162.
# This configuration option has an automatic default value.
# raid_stripe_all_devices = 0
# Configuration option allocation/cache_pool_metadata_require_separate_pvs.
# Cache pool metadata and data will always use different PVs.
# This configuration option has an automatic default value.
# cache_pool_metadata_require_separate_pvs = 0
# Configuration option allocation/cache_metadata_format.
# Sets default metadata format for new cache.
#
# Accepted values:
# 0 Automatically detected best available format
# 1 Original format
# 2 Improved 2nd. generation format
#
# This configuration option has an automatic default value.
# cache_metadata_format = 0
# Configuration option allocation/cache_mode.
# The default cache mode used for new cache.
#
# Accepted values:
# writethrough
# Data blocks are immediately written from the cache to disk.
# writeback
# Data blocks are written from the cache back to disk after some
# delay to improve performance.
#
# This setting replaces allocation/cache_pool_cachemode.
# This configuration option has an automatic default value.
# cache_mode = "writethrough"
# Configuration option allocation/cache_policy.
# The default cache policy used for new cache volume.
# Since kernel 4.2 the default policy is smq (Stochastic multiqueue),
# otherwise the older mq (Multiqueue) policy is selected.
# This configuration option does not have a default value defined.
# Configuration section allocation/cache_settings.
# Settings for the cache policy.
# See documentation for individual cache policies for more info.
# This configuration section has an automatic default value.
# cache_settings {
# }
# Configuration option allocation/cache_pool_chunk_size.
# The minimal chunk size in KiB for cache pool volumes.
# Using a chunk_size that is too large can result in wasteful use of
# the cache, where small reads and writes can cause large sections of
# an LV to be mapped into the cache. However, choosing a chunk_size
# that is too small can result in more overhead trying to manage the
# numerous chunks that become mapped into the cache. The former is
# more of a problem than the latter in most cases, so the default is
# on the smaller end of the spectrum. Supported values range from
# 32KiB to 1GiB in multiples of 32.
# This configuration option does not have a default value defined.
# Configuration option allocation/cache_pool_max_chunks.
# The maximum number of chunks in a cache pool.
# For cache target v1.9 the recommended maximum is 1000000 chunks.
# Using cache pool with more chunks may degrade cache performance.
# This configuration option does not have a default value defined.
# Configuration option allocation/thin_pool_metadata_require_separate_pvs.
# Thin pool metadata and data will always use different PVs.
# This configuration option has an automatic default value.
# thin_pool_metadata_require_separate_pvs = 0
# Configuration option allocation/thin_pool_crop_metadata.
# Older version of lvm2 cropped pool's metadata size to 15.81 GiB.
# This is slightly less than the actual maximum 15.88 GiB.
# For compatibility with older version and use of cropped size set to 1.
# This configuration option has an automatic default value.
# thin_pool_crop_metadata = 0
# Configuration option allocation/thin_pool_zero.
# Thin pool data chunks are zeroed before they are first used.
# Zeroing with a larger thin pool chunk size reduces performance.
# This configuration option has an automatic default value.
# thin_pool_zero = 1
# Configuration option allocation/thin_pool_discards.
# The discards behaviour of thin pool volumes.
#
# Accepted values:
# ignore
# nopassdown
# passdown
#
# This configuration option has an automatic default value.
# thin_pool_discards = "passdown"
# Configuration option allocation/thin_pool_chunk_size_policy.
# The chunk size calculation policy for thin pool volumes.
#
# Accepted values:
# generic
# If thin_pool_chunk_size is defined, use it. Otherwise, calculate
# the chunk size based on estimation and device hints exposed in
# sysfs - the minimum_io_size. The chunk size is always at least
# 64KiB.
# performance
# If thin_pool_chunk_size is defined, use it. Otherwise, calculate
# the chunk size for performance based on device hints exposed in
# sysfs - the optimal_io_size. The chunk size is always at least
# 512KiB.
#
# This configuration option has an automatic default value.
# thin_pool_chunk_size_policy = "generic"
# Configuration option allocation/zero_metadata.
# Zero whole metadata area before use with thin or cache pool.
# This configuration option has an automatic default value.
# zero_metadata = 1
# Configuration option allocation/thin_pool_chunk_size.
# The minimal chunk size in KiB for thin pool volumes.
# Larger chunk sizes may improve performance for plain thin volumes,
# however using them for snapshot volumes is less efficient, as it
# consumes more space and takes extra time for copying. When unset,
# lvm tries to estimate chunk size starting from 64KiB. Supported
# values are in the range 64KiB to 1GiB.
# This configuration option does not have a default value defined.
# Configuration option allocation/physical_extent_size.
# Default physical extent size in KiB to use for new VGs.
# This configuration option has an automatic default value.
# physical_extent_size = 4096
# Configuration option allocation/vdo_use_compression.
# Enables or disables compression when creating a VDO volume.
# Compression may be disabled if necessary to maximize performance
# or to speed processing of data that is unlikely to compress.
# This configuration option has an automatic default value.
# vdo_use_compression = 1
# Configuration option allocation/vdo_use_deduplication.
# Enables or disables deduplication when creating a VDO volume.
# Deduplication may be disabled in instances where data is not expected
# to have good deduplication rates but compression is still desired.
# This configuration option has an automatic default value.
# vdo_use_deduplication = 1
# Configuration option allocation/vdo_minimum_io_size.
# The minimum IO size for VDO volume to accept, in bytes.
# Valid values are 512 or 4096. The recommended value is 4096.
# This configuration option has an automatic default value.
# vdo_minimum_io_size = 4096
# Configuration option allocation/vdo_block_map_cache_size_mb.
# Specifies the amount of memory in MiB allocated for caching block map
# pages for VDO volume. The value must be a multiple of 4096 and must be
# at least 128MiB and less than 16TiB. The cache must be at least 16MiB
# per logical thread. Note that there is a memory overhead of 15%.
# This configuration option has an automatic default value.
# vdo_block_map_cache_size_mb = 128
# Configuration option allocation/vdo_block_map_period.
# The speed with which the block map cache writes out modified block map pages.
# A smaller era length is likely to reduce the amount time spent rebuilding,
# at the cost of increased block map writes during normal operation.
# The maximum and recommended value is 16380; the minimum value is 1.
# This configuration option has an automatic default value.
# vdo_block_map_period = 16380
# Configuration option allocation/vdo_use_sparse_index.
# Enables sparse indexing for VDO volume.
# This configuration option has an automatic default value.
# vdo_use_sparse_index = 0
# Configuration option allocation/vdo_index_memory_size_mb.
# Specifies the amount of index memory in MiB for VDO volume.
# The value must be at least 256MiB and at most 1TiB.
# This configuration option has an automatic default value.
# vdo_index_memory_size_mb = 256
# Configuration option allocation/vdo_slab_size_mb.
# Specifies the size in MiB of the increment by which a VDO is grown.
# Using a smaller size constrains the total maximum physical size
# that can be accommodated. Must be a power of two between 128MiB and 32GiB.
# This configuration option has an automatic default value.
# vdo_slab_size_mb = 2048
# Configuration option allocation/vdo_ack_threads.
# Specifies the number of threads to use for acknowledging
# completion of requested VDO I/O operations.
# The value must be at in range [0..100].
# This configuration option has an automatic default value.
# vdo_ack_threads = 1
# Configuration option allocation/vdo_bio_threads.
# Specifies the number of threads to use for submitting I/O
# operations to the storage device of VDO volume.
# The value must be in range [1..100].
# Each additional thread after the first will use an additional 18MiB of RAM,
# plus 1.12 MiB of RAM per megabyte of configured read cache size.
# This configuration option has an automatic default value.
# vdo_bio_threads = 4
# Configuration option allocation/vdo_bio_rotation.
# Specifies the number of I/O operations to enqueue for each bio-submission
# thread before directing work to the next. The value must be in range [1..1024].
# This configuration option has an automatic default value.
# vdo_bio_rotation = 64
# Configuration option allocation/vdo_cpu_threads.
# Specifies the number of threads to use for CPU-intensive work such as
# hashing or compression for VDO volume. The value must be in range [1..100].
# This configuration option has an automatic default value.
# vdo_cpu_threads = 2
# Configuration option allocation/vdo_hash_zone_threads.
# Specifies the number of threads across which to subdivide parts of the VDO
# processing based on the hash value computed from the block data.
# The value must be at in range [0..100].
# vdo_hash_zone_threads, vdo_logical_threads and vdo_physical_threads must be
# either all zero or all non-zero.
# This configuration option has an automatic default value.
# vdo_hash_zone_threads = 1
# Configuration option allocation/vdo_logical_threads.
# Specifies the number of threads across which to subdivide parts of the VDO
# processing based on the hash value computed from the block data.
# A logical thread count of 9 or more will require explicitly specifying
# a sufficiently large block map cache size, as well.
# The value must be in range [0..60].
# vdo_hash_zone_threads, vdo_logical_threads and vdo_physical_threads must be
# either all zero or all non-zero.
# This configuration option has an automatic default value.
# vdo_logical_threads = 1
# Configuration option allocation/vdo_physical_threads.
# Specifies the number of threads across which to subdivide parts of the VDO
# processing based on physical block addresses.
# Each additional thread after the first will use an additional 10MiB of RAM.
# The value must be in range [0..16].
# vdo_hash_zone_threads, vdo_logical_threads and vdo_physical_threads must be
# either all zero or all non-zero.
# This configuration option has an automatic default value.
# vdo_physical_threads = 1
# Configuration option allocation/vdo_max_discard.
# Specified the maximum size of discard bio accepted, in 4096 byte blocks.
# I/O requests to a VDO volume are normally split into 4096-byte blocks,
# and processed up to 2048 at a time. However, discard requests to a VDO volume
# can be automatically split to a larger size, up to <max discard> 4096-byte blocks
# in a single bio, and are limited to 1500 at a time.
# Increasing this value may provide better overall performance, at the cost of
# increased latency for the individual discard requests.
# The default and minimum is 1. The maximum is UINT_MAX / 4096.
# This configuration option has an automatic default value.
# vdo_max_discard = 1
# Configuration option allocation/vdo_pool_header_size.
# Specified the empty header size in KiB at the front and end of vdo pool device.
# This configuration option has an automatic default value.
# vdo_pool_header_size = 512
}
# Configuration section log.
# How LVM log information is reported.
log {
# Configuration option log/report_command_log.
# Enable or disable LVM log reporting.
# If enabled, LVM will collect a log of operations, messages,
# per-object return codes with object identification and associated
# error numbers (errnos) during LVM command processing. Then the
# log is either reported solely or in addition to any existing
# reports, depending on LVM command used. If it is a reporting command
# (e.g. pvs, vgs, lvs, lvm fullreport), then the log is reported in
# addition to any existing reports. Otherwise, there's only log report
# on output. For all applicable LVM commands, you can request that
# the output has only log report by using --logonly command line
# option. Use log/command_log_cols and log/command_log_sort settings
# to define fields to display and sort fields for the log report.
# You can also use log/command_log_selection to define selection
# criteria used each time the log is reported.
# Note that if report/output_format (or --reportformat command line
# option) is set to json or json_std, then log/report_command_log=1
# is default.
# This configuration option has an automatic default value.
# report_command_log = 0
# Configuration option log/command_log_sort.
# List of columns to sort by when reporting command log.
# See <lvm command> --logonly --configreport log -o help
# for the list of possible fields.
# This configuration option has an automatic default value.
# command_log_sort = "log_seq_num"
# Configuration option log/command_log_cols.
# List of columns to report when reporting command log.
# See <lvm command> --logonly --configreport log -o help
# for the list of possible fields.
# This configuration option has an automatic default value.
# command_log_cols = "log_seq_num,log_type,log_context,log_object_type,log_object_name,log_object_id,log_object_group,log_object_group_id,log_message,log_errno,log_ret_code"
# Configuration option log/command_log_selection.
# Selection criteria used when reporting command log.
# You can define selection criteria that are applied each
# time log is reported. This way, it is possible to control the
# amount of log that is displayed on output and you can select
# only parts of the log that are important for you. To define
# selection criteria, use fields from log report. See also
# <lvm command> --logonly --configreport log -S help for the
# list of possible fields and selection operators. You can also
# define selection criteria for log report on command line directly
# using <lvm command> --configreport log -S <selection criteria>
# which has precedence over log/command_log_selection setting.
# To make all the command log lines visible, use "all" value
# for the command log selection. For more information about selection
# criteria in general, see lvmreport(7) man page.
# This configuration option has an automatic default value.
# command_log_selection = "!(log_type=status && message=success)"
# Configuration option log/verbose.
# Controls the messages sent to stdout or stderr.
# This configuration option has an automatic default value.
# verbose = 0
# Configuration option log/silent.
# Suppress all non-essential messages from stdout.
# This has the same effect as -qq. When enabled, the following commands
# still produce output: dumpconfig, lvdisplay, lvmdiskscan, lvs, pvck,
# pvdisplay, pvs, version, vgcfgrestore -l, vgdisplay, vgs.
# Non-essential messages are shifted from log level 4 to log level 5
# for syslog and lvm2_log_fn purposes.
# Any 'yes' or 'no' questions not overridden by other arguments are
# suppressed and default to 'no'.
# This configuration option has an automatic default value.
# silent = 0
# Configuration option log/syslog.
# Send log messages through syslog.
# This configuration option has an automatic default value.
# syslog = 0
# Configuration option log/file.
# Write error and debug log messages to a file specified here.
# This configuration option does not have a default value defined.
# Configuration option log/journal.
# Record lvm information in the systemd journal.
# command: record commands that are run.
# output: record default output from commands.
# debug: record debug messages from commands.
# This configuration option has an automatic default value.
# journal = [ ]
# Configuration option log/overwrite.
# Overwrite the log file each time the program is run.
# This configuration option has an automatic default value.
# overwrite = 0
# Configuration option log/level.
# The level of log messages that are sent to the log file or syslog.
# There are 6 syslog-like log levels currently in use: 2 to 7 inclusive.
# 7 is the most verbose (LOG_DEBUG).
# This configuration option has an automatic default value.
# level = 0
# Configuration option log/indent.
# Indent messages according to their severity.
# This configuration option has an automatic default value.
# indent = 0
# Configuration option log/command_names.
# Display the command name on each line of output.
# This configuration option has an automatic default value.
# command_names = 0
# Configuration option log/prefix.
# A prefix to use before the log message text.
# (After the command name, if selected).
# Two spaces allows you to see/grep the severity of each message.
# To make the messages look similar to the original LVM tools use:
# indent = 0, command_names = 1, prefix = " -- "
# This configuration option has an automatic default value.
# prefix = " "
# Configuration option log/activation.
# Log messages during activation.
# Don't use this in low memory situations (can deadlock).
# This configuration option has an automatic default value.
# activation = 0
# Configuration option log/debug_classes.
# Select log messages by class.
# Some debugging messages are assigned to a class and only appear in
# debug output if the class is listed here. Classes currently
# available: memory, devices, io, activation, allocation,
# metadata, cache, locking, lvmpolld. Use "all" to see everything.
# This configuration option has an automatic default value.
# debug_classes = [ "memory", "devices", "io", "activation", "allocation", "metadata", "cache", "locking", "lvmpolld", "dbus" ]
# Configuration option log/debug_file_fields.
# The fields included in debug output written to log file.
# Use "all" to include everything (the default).
# This configuration option is advanced.
# This configuration option has an automatic default value.
# debug_file_fields = [ "time", "command", "fileline", "message" ]
# Configuration option log/debug_output_fields.
# The fields included in debug output written to stderr.
# Use "all" to include everything (the default).
# This configuration option is advanced.
# This configuration option has an automatic default value.
# debug_output_fields = [ "time", "command", "fileline", "message" ]
}
# Configuration section backup.
# How LVM metadata is backed up and archived.
# In LVM, a 'backup' is a copy of the metadata for the current system,
# and an 'archive' contains old metadata configurations. They are
# stored in a human readable text format.
backup {
# Configuration option backup/backup.
# Maintain a backup of the current metadata configuration.
# Think very hard before turning this off!
# This configuration option has an automatic default value.
# backup = 1
# Configuration option backup/backup_dir.
# Location of the metadata backup files.
# Remember to back up this directory regularly!
# This configuration option has an automatic default value.
# backup_dir = "/etc/lvm/backup"
# Configuration option backup/archive.
# Maintain an archive of old metadata configurations.
# Think very hard before turning this off.
# This configuration option has an automatic default value.
# archive = 1
# Configuration option backup/archive_dir.
# Location of the metadata archive files.
# Remember to back up this directory regularly!
# This configuration option has an automatic default value.
# archive_dir = "/etc/lvm/archive"
# Configuration option backup/retain_min.
# Minimum number of archives to keep.
# This configuration option has an automatic default value.
# retain_min = 10
# Configuration option backup/retain_days.
# Minimum number of days to keep archive files.
# This configuration option has an automatic default value.
# retain_days = 30
}
# Configuration section shell.
# Settings for running LVM in shell (readline) mode.
shell {
# Configuration option shell/history_size.
# Number of lines of history to store in ~/.lvm_history.
# This configuration option has an automatic default value.
# history_size = 100
}
# Configuration section global.
# Miscellaneous global LVM settings.
global {
# Configuration option global/umask.
# The file creation mask for any files and directories created.
# Interpreted as octal if the first digit is zero.
# This configuration option has an automatic default value.
# umask = 077
# Configuration option global/test.
# No on-disk metadata changes will be made in test mode.
# Equivalent to having the -t option on every command.
# This configuration option has an automatic default value.
# test = 0
# Configuration option global/units.
# Default value for --units argument.
# This configuration option has an automatic default value.
# units = "r"
# Configuration option global/si_unit_consistency.
# Distinguish between powers of 1024 and 1000 bytes.
# The LVM commands distinguish between powers of 1024 bytes,
# e.g. KiB, MiB, GiB, and powers of 1000 bytes, e.g. KB, MB, GB.
# If scripts depend on the old behaviour, disable this setting
# temporarily until they are updated.
# This configuration option has an automatic default value.
# si_unit_consistency = 1
# Configuration option global/suffix.
# Display unit suffix for sizes.
# This setting has no effect if the units are in human-readable form
# (global/units = "h") in which case the suffix is always displayed.
# This configuration option has an automatic default value.
# suffix = 1
# Configuration option global/activation.
# Enable/disable communication with the kernel device-mapper.
# Disable to use the tools to manipulate LVM metadata without
# activating any logical volumes. If the device-mapper driver
# is not present in the kernel, disabling this should suppress
# the error messages.
# This configuration option has an automatic default value.
# activation = 1
# Configuration option global/proc.
# Location of proc filesystem.
# This configuration option is advanced.
# This configuration option has an automatic default value.
# proc = ""
# Configuration option global/etc.
# Location of /etc system configuration directory.
# This configuration option has an automatic default value.
# etc = "/etc"
# Configuration option global/wait_for_locks.
# When disabled, fail if a lock request would block.
# This configuration option has an automatic default value.
# wait_for_locks = 1
# Configuration option global/locking_dir.
# Directory to use for LVM command file locks.
# Local non-LV directory that holds file-based locks while commands are
# in progress. A directory like /tmp that may get wiped on reboot is OK.
# This configuration option has an automatic default value.
# locking_dir = "/run/lock/lvm"
# Configuration option global/prioritise_write_locks.
# Allow quicker VG write access during high volume read access.
# When there are competing read-only and read-write access requests for
# a volume group's metadata, instead of always granting the read-only
# requests immediately, delay them to allow the read-write requests to
# be serviced. Without this setting, write access may be stalled by a
# high volume of read-only requests. This option only affects file locks.
# This configuration option has an automatic default value.
# prioritise_write_locks = 1
# Configuration option global/library_dir.
# Search this directory first for shared libraries.
# This configuration option does not have a default value defined.
# Configuration option global/abort_on_internal_errors.
# Abort a command that encounters an internal error.
# Treat any internal errors as fatal errors, aborting the process that
# encountered the internal error. Please only enable for debugging.
# This configuration option has an automatic default value.
# abort_on_internal_errors = 0
# Configuration option global/metadata_read_only.
# No operations that change on-disk metadata are permitted.
# Additionally, read-only commands that encounter metadata in need of
# repair will still be allowed to proceed exactly as if the repair had
# been performed (except for the unchanged vg_seqno). Inappropriate
# use could mess up your system, so seek advice first!
# This configuration option has an automatic default value.
# metadata_read_only = 0
# Configuration option global/mirror_segtype_default.
# The segment type used by the short mirroring option -m.
# The --type mirror|raid1 option overrides this setting.
#
# Accepted values:
# mirror
# The original RAID1 implementation from LVM/DM. It is
# characterized by a flexible log solution (core, disk, mirrored),
# and by the necessity to block I/O while handling a failure.
# There is an inherent race in the dmeventd failure handling logic
# with snapshots of devices using this type of RAID1 that in the
# worst case could cause a deadlock. (Also see
# devices/ignore_lvm_mirrors.)
# raid1
# This is a newer RAID1 implementation using the MD RAID1
# personality through device-mapper. It is characterized by a
# lack of log options. (A log is always allocated for every
# device and they are placed on the same device as the image,
# so no separate devices are required.) This mirror
# implementation does not require I/O to be blocked while
# handling a failure. This mirror implementation is not
# cluster-aware and cannot be used in a shared (active/active)
# fashion in a cluster.
#
# This configuration option has an automatic default value.
# mirror_segtype_default = "raid1"
# Configuration option global/support_mirrored_mirror_log.
# Enable mirrored 'mirror' log type for testing.
#
# This type is deprecated to create or convert to but can
# be enabled to test that activation of existing mirrored
# logs and conversion to disk/core works.
#
# Not supported for regular operation!
# This configuration option has an automatic default value.
# support_mirrored_mirror_log = 0
# Configuration option global/raid10_segtype_default.
# The segment type used by the -i -m combination.
# The --type raid10|mirror option overrides this setting.
# The --stripes/-i and --mirrors/-m options can both be specified
# during the creation of a logical volume to use both striping and
# mirroring for the LV. There are two different implementations.
#
# Accepted values:
# raid10
# LVM uses MD's RAID10 personality through DM. This is the
# preferred option.
# mirror
# LVM layers the 'mirror' and 'stripe' segment types. The layering
# is done by creating a mirror LV on top of striped sub-LVs,
# effectively creating a RAID 0+1 array. The layering is suboptimal
# in terms of providing redundancy and performance.
#
# This configuration option has an automatic default value.
# raid10_segtype_default = "raid10"
# Configuration option global/sparse_segtype_default.
# The segment type used by the -V -L combination.
# The --type snapshot|thin option overrides this setting.
# The combination of -V and -L options creates a sparse LV. There are
# two different implementations.
#
# Accepted values:
# snapshot
# The original snapshot implementation from LVM/DM. It uses an old
# snapshot that mixes data and metadata within a single COW
# storage volume and performs poorly when the size of stored data
# passes hundreds of MB.
# thin
# A newer implementation that uses thin provisioning. It has a
# bigger minimal chunk size (64KiB) and uses a separate volume for
# metadata. It has better performance, especially when more data
# is used. It also supports full snapshots.
#
# This configuration option has an automatic default value.
# sparse_segtype_default = "thin"
# Configuration option global/lvdisplay_shows_full_device_path.
# Enable this to reinstate the previous lvdisplay name format.
# The default format for displaying LV names in lvdisplay was changed
# in version 2.02.89 to show the LV name and path separately.
# Previously this was always shown as /dev/vgname/lvname even when that
# was never a valid path in the /dev filesystem.
# This configuration option has an automatic default value.
# lvdisplay_shows_full_device_path = 0
# Configuration option global/event_activation.
# Disable event based autoactivation commands.
# WARNING: setting this to zero may cause machine startup to fail.
# Previously, setting this to zero would enable static autoactivation
# services (via the lvm2-activation-generator), but the autoactivation
# services and generator have been removed.
# This configuration option has an automatic default value.
# event_activation = 1
# Configuration option global/use_aio.
# Use async I/O when reading and writing devices.
# This configuration option has an automatic default value.
# use_aio = 1
# Configuration option global/use_lvmlockd.
# Use lvmlockd for locking among hosts using LVM on shared storage.
# Applicable only if LVM is compiled with lockd support in which
# case there is also lvmlockd(8) man page available for more
# information.
# This configuration option has an automatic default value.
# use_lvmlockd = 0
# Configuration option global/lvmlockd_lock_retries.
# Retry lvmlockd lock requests this many times.
# Applicable only if LVM is compiled with lockd support
# This configuration option has an automatic default value.
# lvmlockd_lock_retries = 3
# Configuration option global/sanlock_lv_extend.
# Size in MiB to extend the internal LV holding sanlock locks.
# The internal LV holds locks for each LV in the VG, and after enough
# LVs have been created, the internal LV needs to be extended. lvcreate
# will automatically extend the internal LV when needed by the amount
# specified here. Setting this to 0 disables the automatic extension
# and can cause lvcreate to fail. Applicable only if LVM is compiled
# with lockd support
# This configuration option has an automatic default value.
# sanlock_lv_extend = 256
# Configuration option global/sanlock_align_size.
# The sanlock lease size in MiB to use on disks with a 4K sector size.
# Possible values are 1,2,4,8. The default is 8, which supports up to
# 2000 hosts (and max host_id 2000.) Smaller values support smaller
# numbers of max hosts (and max host_ids): 250, 500, 1000, 2000 for
# lease sizes 1,2,4,8. Disks with 512 byte sectors always use 1MiB
# leases and support 2000 hosts, and are not affected by this setting.
# This configuration option has an automatic default value.
# sanlock_align_size = 8
# Configuration option global/lvmlockctl_kill_command.
# The command that lvmlockctl --kill should use to force LVs offline.
# The lvmlockctl --kill command is run when a shared VG has lost
# access to locks (e.g. when sanlock has lost access to storage.)
# An empty string means that there will be no automatic attempt by
# lvmlockctl --kill to forcibly shut down LVs in the VG, and the user
# can manually intervene as described in lvmlockd(8).
# The VG name will be appended to the command specified here.
# This configuration option has an automatic default value.
# lvmlockctl_kill_command = ""
# Configuration option global/thin_check_executable.
# The full path to the thin_check command.
# LVM uses this command to check that a thin pool metadata device is in a
# usable state. When a thin pool is activated and after it is
# deactivated, this command is run. Activation will only proceed if
# the command has an exit status of 0. Set to "" to skip this check.
# (Not recommended.) Also see thin_check_options.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# thin_check_executable = "/usr/sbin/thin_check"
# Configuration option global/thin_dump_executable.
# The full path to the thin_dump command.
# LVM uses this command to dump thin pool metadata.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# thin_dump_executable = "/usr/sbin/thin_dump"
# Configuration option global/thin_repair_executable.
# The full path to the thin_repair command.
# LVM uses this command to repair a thin metadata device if it is in
# an unusable state. Also see thin_repair_options.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# thin_repair_executable = "/usr/sbin/thin_repair"
# Configuration option global/thin_restore_executable.
# The full path to the thin_restore command.
# LVM uses this command to restore generated data for a thin pool metadata device.
# Also see thin_restore_options.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# thin_restore_executable = "/usr/sbin/thin_restore"
# Configuration option global/thin_check_options.
# List of options passed to the thin_check command.
# With thin_check version 2.1 or newer you can add the option
# --ignore-non-fatal-errors to let it pass through ignorable errors
# and fix them later. With thin_check version 3.2 or newer you should
# include the option --clear-needs-check-flag.
# This configuration option has an automatic default value.
# thin_check_options = [ "-q", "--clear-needs-check-flag" ]
# Configuration option global/thin_repair_options.
# List of options passed to the thin_repair command.
# This configuration option has an automatic default value.
# thin_repair_options = [ "" ]
# Configuration option global/thin_restore_options.
# List of options passed to the thin_restore command.
# This configuration option has an automatic default value.
# thin_restore_options = [ "" ]
# Configuration option global/thin_disabled_features.
# Features to not use in the thin driver.
# This can be helpful for testing, or to avoid using a feature that is
# causing problems. Features include: block_size, discards,
# discards_non_power_2, external_origin, metadata_resize,
# external_origin_extend, error_if_no_space.
#
# Example
# thin_disabled_features = [ "discards", "block_size" ]
#
# This configuration option does not have a default value defined.
# Configuration option global/cache_disabled_features.
# Features to not use in the cache driver.
# This can be helpful for testing, or to avoid using a feature that is
# causing problems. Features include: policy_mq, policy_smq, metadata2.
#
# Example
# cache_disabled_features = [ "policy_smq" ]
#
# This configuration option does not have a default value defined.
# Configuration option global/cache_check_executable.
# The full path to the cache_check command.
# LVM uses this command to check that a cache metadata device is in a
# usable state. When a cached LV is activated and after it is
# deactivated, this command is run. Activation will only proceed if the
# command has an exit status of 0. Set to "" to skip this check.
# (Not recommended.) Also see cache_check_options.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# cache_check_executable = "/usr/sbin/cache_check"
# Configuration option global/cache_dump_executable.
# The full path to the cache_dump command.
# LVM uses this command to dump cache pool metadata.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# cache_dump_executable = "/usr/sbin/cache_dump"
# Configuration option global/cache_repair_executable.
# The full path to the cache_repair command.
# LVM uses this command to repair a cache metadata device if it is in
# an unusable state. Also see cache_repair_options.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# cache_repair_executable = "/usr/sbin/cache_repair"
# Configuration option global/cache_restore_executable.
# The full path to the cache_restore command.
# LVM uses this command to restore generated data for a cache metadata device.
# Also see cache_restore_options.
# (See package device-mapper-persistent-data or thin-provisioning-tools)
# This configuration option has an automatic default value.
# cache_restore_executable = "/usr/sbin/cache_restore"
# Configuration option global/cache_check_options.
# List of options passed to the cache_check command.
# With cache_check version 5.0 or newer you should include the option
# --clear-needs-check-flag.
# This configuration option has an automatic default value.
# cache_check_options = [ "-q", "--clear-needs-check-flag" ]
# Configuration option global/cache_repair_options.
# List of options passed to the cache_repair command.
# This configuration option has an automatic default value.
# cache_repair_options = [ "" ]
# Configuration option global/cache_restore_options.
# List of options passed to the cache_restore command.
# This configuration option has an automatic default value.
# cache_restore_options = [ "" ]
# Configuration option global/vdo_format_executable.
# The full path to the vdoformat command.
# LVM uses this command to initial data volume for VDO type logical volume
# This configuration option has an automatic default value.
# vdo_format_executable = "/usr/bin/vdoformat"
# Configuration option global/vdo_format_options.
# List of options passed added to standard vdoformat command.
# This configuration option has an automatic default value.
# vdo_format_options = [ "" ]
# Configuration option global/vdo_disabled_features.
# Features to not use in the vdo driver.
# This can be helpful for testing, or to avoid using a feature that is
# causing problems. Features include: online_rename, version4
#
# Example
# vdo_disabled_features = [ "online_rename", "version4" ]
#
# This configuration option does not have a default value defined.
# Configuration option global/fsadm_executable.
# The full path to the fsadm command.
# LVM uses this command to help with lvresize -r operations.
# This configuration option has an automatic default value.
# fsadm_executable = "/usr/sbin/fsadm"
# Configuration option global/system_id_source.
# The method LVM uses to set the local system ID.
# Volume Groups can also be given a system ID (by vgcreate, vgchange,
# or vgimport.) A VG on shared storage devices is accessible only to
# the host with a matching system ID. See 'man lvmsystemid' for
# information on limitations and correct usage.
#
# Accepted values:
# none
# The host has no system ID.
# lvmlocal
# Obtain the system ID from the system_id setting in the 'local'
# section of an lvm configuration file, e.g. lvmlocal.conf.
# uname
# Set the system ID from the hostname (uname) of the system.
# System IDs beginning localhost are not permitted.
# appmachineid
# Use an LVM-specific derivation of the local machine-id as the
# system ID. See 'man machine-id'.
# machineid
# Use the contents of the machine-id file to set the system ID.
# (appmachineid is recommended to avoid exposing the confidential
# machine-id.)
# file
# Use the contents of another file (system_id_file) to set the
# system ID.
#
# This configuration option has an automatic default value.
# system_id_source = "none"
# Configuration option global/system_id_file.
# The full path to the file containing a system ID.
# This is used when system_id_source is set to 'file'.
# Comments starting with the character # are ignored.
# This configuration option does not have a default value defined.
# Configuration option global/use_lvmpolld.
# Use lvmpolld to supervise long running LVM commands.
# When enabled, control of long running LVM commands is transferred
# from the original LVM command to the lvmpolld daemon. This allows
# the operation to continue independent of the original LVM command.
# After lvmpolld takes over, the LVM command displays the progress
# of the ongoing operation. lvmpolld itself runs LVM commands to
# manage the progress of ongoing operations. lvmpolld can be used as
# a native systemd service, which allows it to be started on demand,
# and to use its own control group. When this option is disabled, LVM
# commands will supervise long running operations by forking themselves.
# Applicable only if LVM is compiled with lvmpolld support.
# This configuration option has an automatic default value.
# use_lvmpolld = 1
# Configuration option global/notify_dbus.
# Enable D-Bus notification from LVM commands.
# When enabled, an LVM command that changes PVs, changes VG metadata,
# or changes the activation state of an LV will send a notification.
# This configuration option has an automatic default value.
# notify_dbus = 1
# Configuration option global/io_memory_size.
# The amount of memory in KiB that LVM allocates to perform disk io.
# LVM performance may benefit from more io memory when there are many
# disks or VG metadata is large. Increasing this size may be necessary
# when a single copy of VG metadata is larger than the current setting.
# This value should usually not be decreased from the default; setting
# it too low can result in lvm failing to read VGs.
# This configuration option has an automatic default value.
# io_memory_size = 8192
}
# Configuration section activation.
activation {
# Configuration option activation/checks.
# Perform internal checks of libdevmapper operations.
# Useful for debugging problems with activation. Some of the checks may
# be expensive, so it's best to use this only when there seems to be a
# problem.
# This configuration option has an automatic default value.
# checks = 0
# Configuration option activation/udev_sync.
# Use udev notifications to synchronize udev and LVM.
# The --noudevsync option overrides this setting.
# When disabled, LVM commands will not wait for notifications from
# udev, but continue irrespective of any possible udev processing in
# the background. Only use this if udev is not running or has rules
# that ignore the devices LVM creates. If enabled when udev is not
# running, and LVM processes are waiting for udev, run the command
# 'dmsetup udevcomplete_all' to wake them up.
# This configuration option has an automatic default value.
# udev_sync = 1
# Configuration option activation/udev_rules.
# Use udev rules to manage LV device nodes and symlinks.
# When disabled, LVM will manage the device nodes and symlinks for
# active LVs itself. Manual intervention may be required if this
# setting is changed while LVs are active.
# This configuration option has an automatic default value.
# udev_rules = 1
# Configuration option activation/verify_udev_operations.
# Use extra checks in LVM to verify udev operations.
# This enables additional checks (and if necessary, repairs) on entries
# in the device directory after udev has completed processing its
# events. Useful for diagnosing problems with LVM/udev interactions.
# This configuration option has an automatic default value.
# verify_udev_operations = 0
# Configuration option activation/retry_deactivation.
# Retry failed LV deactivation.
# If LV deactivation fails, LVM will retry for a few seconds before
# failing. This may happen because a process run from a quick udev rule
# temporarily opened the device.
# This configuration option has an automatic default value.
# retry_deactivation = 1
# Configuration option activation/missing_stripe_filler.
# Method to fill missing stripes when activating an incomplete LV.
# Using 'error' will make inaccessible parts of the device return I/O
# errors on access. Using 'zero' will return success (and zero) on I/O
# You can instead use a device path, in which case,
# that device will be used in place of missing stripes. Using anything
# other than 'error' with mirrored or snapshotted volumes is likely to
# result in data corruption.
# This configuration option is advanced.
# This configuration option has an automatic default value.
# missing_stripe_filler = "error"
# Configuration option activation/use_linear_target.
# Use the linear target to optimize single stripe LVs.
# When disabled, the striped target is used. The linear target is an
# optimised version of the striped target that only handles a single
# stripe.
# This configuration option has an automatic default value.
# use_linear_target = 1
# Configuration option activation/reserved_stack.
# Stack size in KiB to reserve for use while devices are suspended.
# Insufficient reserve risks I/O deadlock during device suspension.
# Value 0 disables memory locking.
# This configuration option has an automatic default value.
# reserved_stack = 64
# Configuration option activation/reserved_memory.
# Memory size in KiB to reserve for use while devices are suspended.
# Insufficient reserve risks I/O deadlock during device suspension.
# Value 0 disables memory locking.
# This configuration option has an automatic default value.
# reserved_memory = 8192
# Configuration option activation/process_priority.
# Nice value used while devices are suspended.
# Use a high priority so that LVs are suspended
# for the shortest possible time.
# This configuration option has an automatic default value.
# process_priority = -18
# Configuration option activation/volume_list.
# Only LVs selected by this list are activated.
# If this list is defined, an LV is only activated if it matches an
# entry in this list. If this list is undefined, it imposes no limits
# on LV activation (all are allowed).
#
# Accepted values:
# vgname
# The VG name is matched exactly and selects all LVs in the VG.
# vgname/lvname
# The VG name and LV name are matched exactly and selects the LV.
# @tag
# Selects an LV if the specified tag matches a tag set on the LV
# or VG.
# @*
# Selects an LV if a tag defined on the host is also set on the LV
# or VG. See tags/hosttags. If any host tags exist but volume_list
# is not defined, a default single-entry list containing '@*'
# is assumed.
#
# Example
# volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ]
#
# This configuration option does not have a default value defined.
# Configuration option activation/auto_activation_volume_list.
# A list of VGs or LVs that should be autoactivated.
# Autoactivation is an activation command run with -aay,
# i.e. vgchange -aay, lvchange -aay, or pvscan --cache -aay.
# When this list is defined, an autoactivation command will only
# activate LVs included in the list. If this list is undefined,
# it has no effect. If this list is defined but empty, then no
# LVs will be autoactivated. LVs can be included in the list by
# LV name, VG name (applies to all LVs in the VG), or tag name.
# VGs and LVs can also have an autoactivation property set in
# metadata, see --setautoactivation. LVs included in this list
# will not be autoactivated if the VG or LV autoactivation
# property is disabled (see vgs or lvs "-o autoactivation").
# The volume_list setting and the "activation skip" property
# also apply to autoactivation.
# The -aay option is meant to be used by activation commands that
# are run automatically by the system, e.g. from systemd services.
#
# Accepted values:
# vgname
# The VG name is matched exactly and selects all LVs in the VG.
# vgname/lvname
# The VG name and LV name are matched exactly and selects the LV.
# @tag
# Selects an LV if the specified tag matches a tag set on the LV
# or VG.
# @*
# Selects an LV if a tag defined on the host is also set on the LV
# or VG. See tags/hosttags. If any host tags exist but volume_list
# is not defined, a default single-entry list containing '@*'
# is assumed.
#
# Example
# auto_activation_volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ]
#
# This configuration option does not have a default value defined.
# Configuration option activation/read_only_volume_list.
# LVs in this list are activated in read-only mode.
# If this list is defined, each LV that is to be activated is checked
# against this list, and if it matches, it is activated in read-only
# mode. This overrides the permission setting stored in the metadata,
# e.g. from --permission rw.
#
# Accepted values:
# vgname
# The VG name is matched exactly and selects all LVs in the VG.
# vgname/lvname
# The VG name and LV name are matched exactly and selects the LV.
# @tag
# Selects an LV if the specified tag matches a tag set on the LV
# or VG.
# @*
# Selects an LV if a tag defined on the host is also set on the LV
# or VG. See tags/hosttags. If any host tags exist but volume_list
# is not defined, a default single-entry list containing '@*'
# is assumed.
#
# Example
# read_only_volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ]
#
# This configuration option does not have a default value defined.
# Configuration option activation/raid_region_size.
# Size in KiB of each raid or mirror synchronization region.
# The clean/dirty state of data is tracked for each region.
# The value is rounded down to a power of two if necessary, and
# is ignored if it is not a multiple of the machine memory page size.
# This configuration option has an automatic default value.
# raid_region_size = 2048
# Configuration option activation/error_when_full.
# Return errors if a thin pool runs out of space.
# The --errorwhenfull option overrides this setting.
# When enabled, writes to thin LVs immediately return an error if the
# thin pool is out of data space. When disabled, writes to thin LVs
# are queued if the thin pool is out of space, and processed when the
# thin pool data space is extended. New thin pools are assigned the
# behavior defined here.
# This configuration option has an automatic default value.
# error_when_full = 0
# Configuration option activation/readahead.
# Setting to use when there is no readahead setting in metadata.
#
# Accepted values:
# none
# Disable readahead.
# auto
# Use default value chosen by kernel.
#
# This configuration option has an automatic default value.
# readahead = "auto"
# Configuration option activation/raid_fault_policy.
# Defines how a device failure in a RAID LV is handled.
# This includes LVs that have the following segment types:
# raid1, raid4, raid5*, and raid6*.
# If a device in the LV fails, the policy determines the steps
# performed by dmeventd automatically, and the steps performed by the
# manual command lvconvert --repair --use-policies.
# Automatic handling requires dmeventd to be monitoring the LV.
#
# Accepted values:
# warn
# Use the system log to warn the user that a device in the RAID LV
# has failed. It is left to the user to run lvconvert --repair
# manually to remove or replace the failed device. As long as the
# number of failed devices does not exceed the redundancy of the LV
# (1 device for raid4/5, 2 for raid6), the LV will remain usable.
# allocate
# Attempt to use any extra physical volumes in the VG as spares and
# replace faulty devices.
#
# This configuration option has an automatic default value.
# raid_fault_policy = "warn"
# Configuration option activation/mirror_image_fault_policy.
# Defines how a device failure in a 'mirror' LV is handled.
# An LV with the 'mirror' segment type is composed of mirror images
# (copies) and a mirror log. A disk log ensures that a mirror LV does
# not need to be re-synced (all copies made the same) every time a
# machine reboots or crashes. If a device in the LV fails, this policy
# determines the steps performed by dmeventd automatically, and the steps
# performed by the manual command lvconvert --repair --use-policies.
# Automatic handling requires dmeventd to be monitoring the LV.
#
# Accepted values:
# remove
# Simply remove the faulty device and run without it. If the log
# device fails, the mirror would convert to using an in-memory log.
# This means the mirror will not remember its sync status across
# crashes/reboots and the entire mirror will be re-synced. If a
# mirror image fails, the mirror will convert to a non-mirrored
# device if there is only one remaining good copy.
# allocate
# Remove the faulty device and try to allocate space on a new
# device to be a replacement for the failed device. Using this
# policy for the log is fast and maintains the ability to remember
# sync state through crashes/reboots. Using this policy for a
# mirror device is slow, as it requires the mirror to resynchronize
# the devices, but it will preserve the mirror characteristic of
# the device. This policy acts like 'remove' if no suitable device
# and space can be allocated for the replacement.
# allocate_anywhere
# Not yet implemented. Useful to place the log device temporarily
# on the same physical volume as one of the mirror images. This
# policy is not recommended for mirror devices since it would break
# the redundant nature of the mirror. This policy acts like
# 'remove' if no suitable device and space can be allocated for the
# replacement.
#
# This configuration option has an automatic default value.
# mirror_image_fault_policy = "remove"
# Configuration option activation/mirror_log_fault_policy.
# Defines how a device failure in a 'mirror' log LV is handled.
# The mirror_image_fault_policy description for mirrored LVs also
# applies to mirrored log LVs.
# This configuration option has an automatic default value.
# mirror_log_fault_policy = "allocate"
# Configuration option activation/snapshot_autoextend_threshold.
# Auto-extend a snapshot when its usage exceeds this percent.
# Setting this to 100 disables automatic extension.
# The minimum value is 50 (a smaller value is treated as 50.)
# Also see snapshot_autoextend_percent.
# Automatic extension requires dmeventd to be monitoring the LV.
#
# Example
# Using 70% autoextend threshold and 20% autoextend size, when a 1G
# snapshot exceeds 700M, it is extended to 1.2G, and when it exceeds
# 840M, it is extended to 1.44G:
# snapshot_autoextend_threshold = 70
#
# This configuration option has an automatic default value.
# snapshot_autoextend_threshold = 100
# Configuration option activation/snapshot_autoextend_percent.
# Auto-extending a snapshot adds this percent extra space.
# The amount of additional space added to a snapshot is this
# percent of its current size.
#
# Example
# Using 70% autoextend threshold and 20% autoextend size, when a 1G
# snapshot exceeds 700M, it is extended to 1.2G, and when it exceeds
# 840M, it is extended to 1.44G:
# snapshot_autoextend_percent = 20
#
# This configuration option has an automatic default value.
# snapshot_autoextend_percent = 20
# Configuration option activation/thin_pool_autoextend_threshold.
# Auto-extend a thin pool when its usage exceeds this percent.
# Setting this to 100 disables automatic extension.
# The minimum value is 50 (a smaller value is treated as 50.)
# Also see thin_pool_autoextend_percent.
# Automatic extension requires dmeventd to be monitoring the LV.
#
# Example
# Using 70% autoextend threshold and 20% autoextend size, when a 1G
# thin pool exceeds 700M, it is extended to 1.2G, and when it exceeds
# 840M, it is extended to 1.44G:
# thin_pool_autoextend_threshold = 70
#
# This configuration option has an automatic default value.
# thin_pool_autoextend_threshold = 100
# Configuration option activation/thin_pool_autoextend_percent.
# Auto-extending a thin pool adds this percent extra space.
# The amount of additional space added to a thin pool is this
# percent of its current size.
#
# Example
# Using 70% autoextend threshold and 20% autoextend size, when a 1G
# thin pool exceeds 700M, it is extended to 1.2G, and when it exceeds
# 840M, it is extended to 1.44G:
# thin_pool_autoextend_percent = 20
#
# This configuration option has an automatic default value.
# thin_pool_autoextend_percent = 20
# Configuration option activation/vdo_pool_autoextend_threshold.
# Auto-extend a VDO pool when its usage exceeds this percent.
# Setting this to 100 disables automatic extension.
# The minimum value is 50 (a smaller value is treated as 50.)
# Also see vdo_pool_autoextend_percent.
# Automatic extension requires dmeventd to be monitoring the LV.
#
# Example
# Using 70% autoextend threshold and 20% autoextend size, when a 10G
# VDO pool exceeds 7G, it is extended to 12G, and when it exceeds
# 8.4G, it is extended to 14.4G:
# vdo_pool_autoextend_threshold = 70
#
# This configuration option has an automatic default value.
# vdo_pool_autoextend_threshold = 100
# Configuration option activation/vdo_pool_autoextend_percent.
# Auto-extending a VDO pool adds this percent extra space.
# The amount of additional space added to a VDO pool is this
# percent of its current size.
#
# Example
# Using 70% autoextend threshold and 20% autoextend size, when a 10G
# VDO pool exceeds 7G, it is extended to 12G, and when it exceeds
# 8.4G, it is extended to 14.4G:
# This configuration option has an automatic default value.
# vdo_pool_autoextend_percent = 20
# Configuration option activation/mlock_filter.
# Do not mlock these memory areas.
# While activating devices, I/O to devices being (re)configured is
# suspended. As a precaution against deadlocks, LVM pins memory it is
# using so it is not paged out, and will not require I/O to reread.
# Groups of pages that are known not to be accessed during activation
# do not need to be pinned into memory. Each string listed in this
# setting is compared against each line in /proc/self/maps, and the
# pages corresponding to lines that match are not pinned. On some
# systems, locale-archive was found to make up over 80% of the memory
# used by the process.
#
# Example
# mlock_filter = [ "locale/locale-archive", "gconv/gconv-modules.cache" ]
#
# This configuration option is advanced.
# This configuration option does not have a default value defined.
# Configuration option activation/use_mlockall.
# Use the old behavior of mlockall to pin all memory.
# Prior to version 2.02.62, LVM used mlockall() to pin the whole
# process's memory while activating devices.
# This configuration option has an automatic default value.
# use_mlockall = 0
# Configuration option activation/monitoring.
# Monitor LVs that are activated.
# The --ignoremonitoring option overrides this setting.
# When enabled, LVM will ask dmeventd to monitor activated LVs.
# This configuration option has an automatic default value.
# monitoring = 1
# Configuration option activation/polling_interval.
# Check pvmove or lvconvert progress at this interval (seconds).
# When pvmove or lvconvert must wait for the kernel to finish
# synchronizing or merging data, they check and report progress at
# intervals of this number of seconds. If this is set to 0 and there
# is only one thing to wait for, there are no progress reports, but
# the process is awoken immediately once the operation is complete.
# This configuration option has an automatic default value.
# polling_interval = 15
# Configuration option activation/auto_set_activation_skip.
# Set the activation skip flag on new thin snapshot LVs.
# The --setactivationskip option overrides this setting.
# An LV can have a persistent 'activation skip' flag. The flag causes
# the LV to be skipped during normal activation. The lvchange/vgchange
# -K option is required to activate LVs that have the activation skip
# flag set. When this setting is enabled, the activation skip flag is
# set on new thin snapshot LVs.
# This configuration option has an automatic default value.
# auto_set_activation_skip = 1
# Configuration option activation/activation_mode.
# How LVs with missing devices are activated.
# The --activationmode option overrides this setting.
#
# Accepted values:
# complete
# Only allow activation of an LV if all of the Physical Volumes it
# uses are present. Other PVs in the Volume Group may be missing.
# degraded
# Like complete, but additionally RAID LVs of segment type raid1,
# raid4, raid5, raid6 and raid10 will be activated if there is no
# data loss, i.e. they have sufficient redundancy to present the
# entire addressable range of the Logical Volume.
# partial
# Allows the activation of any LV even if a missing or failed PV
# could cause data loss with a portion of the LV inaccessible.
# This setting should not normally be used, but may sometimes
# assist with data recovery.
#
# This configuration option has an automatic default value.
# activation_mode = "degraded"
# Configuration option activation/lock_start_list.
# Locking is started only for VGs selected by this list.
# The rules are the same as those for volume_list.
# This configuration option does not have a default value defined.
# Configuration option activation/auto_lock_start_list.
# Locking is auto-started only for VGs selected by this list.
# The rules are the same as those for auto_activation_volume_list.
# This configuration option does not have a default value defined.
}
# Configuration section metadata.
# This configuration section has an automatic default value.
# metadata {
# Configuration option metadata/check_pv_device_sizes.
# Check device sizes are not smaller than corresponding PV sizes.
# If device size is less than corresponding PV size found in metadata,
# there is always a risk of data loss. If this option is set, then LVM
# issues a warning message each time it finds that the device size is
# less than corresponding PV size. You should not disable this unless
# you are absolutely sure about what you are doing!
# This configuration option is advanced.
# This configuration option has an automatic default value.
# check_pv_device_sizes = 1
# Configuration option metadata/record_lvs_history.
# When enabled, LVM keeps history records about removed LVs in
# metadata. The information that is recorded in metadata for
# historical LVs is reduced when compared to original
# information kept in metadata for live LVs. Currently, this
# feature is supported for thin and thin snapshot LVs only.
# This configuration option has an automatic default value.
# record_lvs_history = 0
# Configuration option metadata/lvs_history_retention_time.
# Retention time in seconds after which a record about individual
# historical logical volume is automatically destroyed.
# A value of 0 disables this feature.
# This configuration option has an automatic default value.
# lvs_history_retention_time = 0
# Configuration option metadata/pvmetadatacopies.
# Number of copies of metadata to store on each PV.
# The --pvmetadatacopies option overrides this setting.
#
# Accepted values:
# 2
# Two copies of the VG metadata are stored on the PV, one at the
# front of the PV, and one at the end.
# 1
# One copy of VG metadata is stored at the front of the PV.
# 0
# No copies of VG metadata are stored on the PV. This may be
# useful for VGs containing large numbers of PVs.
#
# This configuration option is advanced.
# This configuration option has an automatic default value.
# pvmetadatacopies = 1
# Configuration option metadata/vgmetadatacopies.
# Number of copies of metadata to maintain for each VG.
# The --vgmetadatacopies option overrides this setting.
# If set to a non-zero value, LVM automatically chooses which of the
# available metadata areas to use to achieve the requested number of
# copies of the VG metadata. If you set a value larger than the the
# total number of metadata areas available, then metadata is stored in
# them all. The value 0 (unmanaged) disables this automatic management
# and allows you to control which metadata areas are used at the
# individual PV level using pvchange --metadataignore y|n.
# This configuration option has an automatic default value.
# vgmetadatacopies = 0
# Configuration option metadata/pvmetadatasize.
# The default size of the metadata area in units of 512 byte sectors.
# The metadata area begins at an offset of the page size from the start
# of the device. The first PE is by default at 1 MiB from the start of
# the device. The space between these is the default metadata area size.
# The actual size of the metadata area may be larger than what is set
# here due to default_data_alignment making the first PE a MiB multiple.
# The metadata area begins with a 512 byte header and is followed by a
# circular buffer used for VG metadata text. The maximum size of the VG
# metadata is about half the size of the metadata buffer. VGs with large
# numbers of PVs or LVs, or VGs containing complex LV structures, may need
# additional space for VG metadata. The --metadatasize option overrides
# this setting.
# This configuration option does not have a default value defined.
# Configuration option metadata/pvmetadataignore.
# Ignore metadata areas on a new PV.
# The --metadataignore option overrides this setting.
# If metadata areas on a PV are ignored, LVM will not store metadata
# in them.
# This configuration option is advanced.
# This configuration option has an automatic default value.
# pvmetadataignore = 0
# Configuration option metadata/stripesize.
# This configuration option is advanced.
# This configuration option has an automatic default value.
# stripesize = 64
# }
# Configuration section report.
# LVM report command output formatting.
report {
# Configuration option report/output_format.
# Format of LVM command's report output.
# If there is more than one report per command, then the format
# is applied for all reports. You can also change output format
# directly on command line using --reportformat option which
# has precedence over report/output_format setting.
# Accepted values:
# basic
# Original format with columns and rows. If there is more than
# one report per command, each report is prefixed with report's
# name for identification.
# json
# JSON format.
# json_std
# JSON format that is more compliant with JSON standard.
# Compared to original "json" format:
# - it does not use double quotes around numeric values,
# - it uses 'null' for undefined numeric values,
# - it prints string list as proper JSON array of strings instead of a single string.
# Note that if json or json_std output format is used, then log/command_log_report=1 is default.
# This configuration option has an automatic default value.
# output_format = "basic"
# Configuration option report/compact_output.
# Do not print empty values for all report fields.
# If enabled, all fields that don't have a value set for any of the
# rows reported are skipped and not printed. Compact output is
# applicable only if report/buffered is enabled. If you need to
# compact only specified fields, use compact_output=0 and define
# report/compact_output_cols configuration setting instead.
# This configuration option has an automatic default value.
# compact_output = 0
# Configuration option report/compact_output_cols.
# Do not print empty values for specified report fields.
# If defined, specified fields that don't have a value set for any
# of the rows reported are skipped and not printed. Compact output
# is applicable only if report/buffered is enabled. If you need to
# compact all fields, use compact_output=1 instead in which case
# the compact_output_cols setting is then ignored.
# This configuration option has an automatic default value.
# compact_output_cols = ""
# Configuration option report/aligned.
# Align columns in report output.
# This configuration option has an automatic default value.
# aligned = 1
# Configuration option report/buffered.
# Buffer report output.
# When buffered reporting is used, the report's content is appended
# incrementally to include each object being reported until the report
# is flushed to output which normally happens at the end of command
# execution. Otherwise, if buffering is not used, each object is
# reported as soon as its processing is finished.
# This configuration option has an automatic default value.
# buffered = 1
# Configuration option report/headings.
# Format of LVM command's report output headings.
# Accepted values:
# 0 no headings,
# 1 headings with column abbreviations,
# 2 headings with full column names.
# This configuration option has an automatic default value.
# headings = 1
# Configuration option report/separator.
# A separator to use on report after each field.
# This configuration option has an automatic default value.
# separator = " "
# Configuration option report/list_item_separator.
# A separator to use for list items when reported.
# This configuration option has an automatic default value.
# list_item_separator = ","
# Configuration option report/prefixes.
# Use a field name prefix for each field reported.
# This configuration option has an automatic default value.
# prefixes = 0
# Configuration option report/quoted.
# Quote field values when using field name prefixes.
# This configuration option has an automatic default value.
# quoted = 1
# Configuration option report/columns_as_rows.
# Output each column as a row.
# If set, this also implies report/prefixes=1.
# This configuration option has an automatic default value.
# columns_as_rows = 0
# Configuration option report/binary_values_as_numeric.
# Use binary values 0 or 1 instead of descriptive literal values.
# For columns that have exactly two valid values to report
# (not counting the 'unknown' value which denotes that the
# value could not be determined).
# This configuration option has an automatic default value.
# binary_values_as_numeric = 0
# Configuration option report/time_format.
# Set time format for fields reporting time values.
# Format specification is a string which may contain special character
# sequences and ordinary character sequences. Ordinary character
# sequences are copied verbatim. Each special character sequence is
# introduced by the '%' character and such sequence is then
# substituted with a value as described below.
#
# Accepted values:
# %a
# The abbreviated name of the day of the week according to the
# current locale.
# %A
# The full name of the day of the week according to the current
# locale.
# %b
# The abbreviated month name according to the current locale.
# %B
# The full month name according to the current locale.
# %c
# The preferred date and time representation for the current
# locale (alt E)
# %C
# The century number (year/100) as a 2-digit integer. (alt E)
# %d
# The day of the month as a decimal number (range 01 to 31).
# (alt O)
# %D
# Equivalent to %m/%d/%y. (For Americans only. Americans should
# note that in other countries%d/%m/%y is rather common. This
# means that in international context this format is ambiguous and
# should not be used.
# %e
# Like %d, the day of the month as a decimal number, but a leading
# zero is replaced by a space. (alt O)
# %E
# Modifier: use alternative local-dependent representation if
# available.
# %F
# Equivalent to %Y-%m-%d (the ISO 8601 date format).
# %G
# The ISO 8601 week-based year with century as a decimal number.
# The 4-digit year corresponding to the ISO week number (see %V).
# This has the same format and value as %Y, except that if the
# ISO week number belongs to the previous or next year, that year
# is used instead.
# %g
# Like %G, but without century, that is, with a 2-digit year
# (00-99).
# %h
# Equivalent to %b.
# %H
# The hour as a decimal number using a 24-hour clock
# (range 00 to 23). (alt O)
# %I
# The hour as a decimal number using a 12-hour clock
# (range 01 to 12). (alt O)
# %j
# The day of the year as a decimal number (range 001 to 366).
# %k
# The hour (24-hour clock) as a decimal number (range 0 to 23);
# single digits are preceded by a blank. (See also %H.)
# %l
# The hour (12-hour clock) as a decimal number (range 1 to 12);
# single digits are preceded by a blank. (See also %I.)
# %m
# The month as a decimal number (range 01 to 12). (alt O)
# %M
# The minute as a decimal number (range 00 to 59). (alt O)
# %O
# Modifier: use alternative numeric symbols.
# %p
# Either "AM" or "PM" according to the given time value,
# or the corresponding strings for the current locale. Noon is
# treated as "PM" and midnight as "AM".
# %P
# Like %p but in lowercase: "am" or "pm" or a corresponding
# string for the current locale.
# %r
# The time in a.m. or p.m. notation. In the POSIX locale this is
# equivalent to %I:%M:%S %p.
# %R
# The time in 24-hour notation (%H:%M). For a version including
# the seconds, see %T below.
# %s
# The number of seconds since the Epoch,
# 1970-01-01 00:00:00 +0000 (UTC)
# %S
# The second as a decimal number (range 00 to 60). (The range is
# up to 60 to allow for occasional leap seconds.) (alt O)
# %t
# A tab character.
# %T
# The time in 24-hour notation (%H:%M:%S).
# %u
# The day of the week as a decimal, range 1 to 7, Monday being 1.
# See also %w. (alt O)
# %U
# The week number of the current year as a decimal number,
# range 00 to 53, starting with the first Sunday as the first
# day of week 01. See also %V and %W. (alt O)
# %V
# The ISO 8601 week number of the current year as a decimal number,
# range 01 to 53, where week 1 is the first week that has at least
# 4 days in the new year. See also %U and %W. (alt O)
# %w
# The day of the week as a decimal, range 0 to 6, Sunday being 0.
# See also %u. (alt O)
# %W
# The week number of the current year as a decimal number,
# range 00 to 53, starting with the first Monday as the first day
# of week 01. (alt O)
# %x
# The preferred date representation for the current locale without
# the time. (alt E)
# %X
# The preferred time representation for the current locale without
# the date. (alt E)
# %y
# The year as a decimal number without a century (range 00 to 99).
# (alt E, alt O)
# %Y
# The year as a decimal number including the century. (alt E)
# %z
# The +hhmm or -hhmm numeric timezone (that is, the hour and minute
# offset from UTC).
# %Z
# The timezone name or abbreviation.
# %%
# A literal '%' character.
#
# This configuration option has an automatic default value.
# time_format = "%Y-%m-%d %T %z"
# Configuration option report/devtypes_sort.
# List of columns to sort by when reporting 'lvm devtypes' command.
# See 'lvm devtypes -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# devtypes_sort = "devtype_name"
# Configuration option report/devtypes_cols.
# List of columns to report for 'lvm devtypes' command.
# See 'lvm devtypes -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# devtypes_cols = "devtype_name,devtype_max_partitions,devtype_description"
# Configuration option report/devtypes_cols_verbose.
# List of columns to report for 'lvm devtypes' command in verbose mode.
# See 'lvm devtypes -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# devtypes_cols_verbose = "devtype_name,devtype_max_partitions,devtype_description"
# Configuration option report/lvs_sort.
# List of columns to sort by when reporting 'lvs' command.
# See 'lvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# lvs_sort = "vg_name,lv_name"
# Configuration option report/lvs_cols.
# List of columns to report for 'lvs' command.
# See 'lvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# lvs_cols = "lv_name,vg_name,lv_attr,lv_size,pool_lv,origin,data_percent,metadata_percent,move_pv,mirror_log,copy_percent,convert_lv"
# Configuration option report/lvs_cols_verbose.
# List of columns to report for 'lvs' command in verbose mode.
# See 'lvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# lvs_cols_verbose = "lv_name,vg_name,seg_count,lv_attr,lv_size,lv_major,lv_minor,lv_kernel_major,lv_kernel_minor,pool_lv,origin,data_percent,metadata_percent,move_pv,copy_percent,mirror_log,convert_lv,lv_uuid,lv_profile"
# Configuration option report/vgs_sort.
# List of columns to sort by when reporting 'vgs' command.
# See 'vgs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# vgs_sort = "vg_name"
# Configuration option report/vgs_cols.
# List of columns to report for 'vgs' command.
# See 'vgs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# vgs_cols = "vg_name,pv_count,lv_count,snap_count,vg_attr,vg_size,vg_free"
# Configuration option report/vgs_cols_verbose.
# List of columns to report for 'vgs' command in verbose mode.
# See 'vgs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# vgs_cols_verbose = "vg_name,vg_attr,vg_extent_size,pv_count,lv_count,snap_count,vg_size,vg_free,vg_uuid,vg_profile"
# Configuration option report/pvs_sort.
# List of columns to sort by when reporting 'pvs' command.
# See 'pvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvs_sort = "pv_name"
# Configuration option report/pvs_cols.
# List of columns to report for 'pvs' command.
# See 'pvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvs_cols = "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free"
# Configuration option report/pvs_cols_verbose.
# List of columns to report for 'pvs' command in verbose mode.
# See 'pvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvs_cols_verbose = "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,dev_size,pv_uuid"
# Configuration option report/segs_sort.
# List of columns to sort by when reporting 'lvs --segments' command.
# See 'lvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# segs_sort = "vg_name,lv_name,seg_start"
# Configuration option report/segs_cols.
# List of columns to report for 'lvs --segments' command.
# See 'lvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# segs_cols = "lv_name,vg_name,lv_attr,stripes,segtype,seg_size"
# Configuration option report/segs_cols_verbose.
# List of columns to report for 'lvs --segments' command in verbose mode.
# See 'lvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# segs_cols_verbose = "lv_name,vg_name,lv_attr,seg_start,seg_size,stripes,segtype,stripesize,chunksize"
# Configuration option report/pvsegs_sort.
# List of columns to sort by when reporting 'pvs --segments' command.
# See 'pvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvsegs_sort = "pv_name,pvseg_start"
# Configuration option report/pvsegs_cols.
# List of columns to sort by when reporting 'pvs --segments' command.
# See 'pvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvsegs_cols = "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,pvseg_start,pvseg_size"
# Configuration option report/pvsegs_cols_verbose.
# List of columns to sort by when reporting 'pvs --segments' command in verbose mode.
# See 'pvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvsegs_cols_verbose = "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,pvseg_start,pvseg_size,lv_name,seg_start_pe,segtype,seg_pe_ranges"
# Configuration option report/vgs_cols_full.
# List of columns to report for lvm fullreport's 'vgs' subreport.
# See 'vgs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# vgs_cols_full = "vg_all"
# Configuration option report/pvs_cols_full.
# List of columns to report for lvm fullreport's 'vgs' subreport.
# See 'pvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvs_cols_full = "pv_all"
# Configuration option report/lvs_cols_full.
# List of columns to report for lvm fullreport's 'lvs' subreport.
# See 'lvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# lvs_cols_full = "lv_all"
# Configuration option report/pvsegs_cols_full.
# List of columns to report for lvm fullreport's 'pvseg' subreport.
# See 'pvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvsegs_cols_full = "pvseg_all,pv_uuid,lv_uuid"
# Configuration option report/segs_cols_full.
# List of columns to report for lvm fullreport's 'seg' subreport.
# See 'lvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# segs_cols_full = "seg_all,lv_uuid"
# Configuration option report/vgs_sort_full.
# List of columns to sort by when reporting lvm fullreport's 'vgs' subreport.
# See 'vgs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# vgs_sort_full = "vg_name"
# Configuration option report/pvs_sort_full.
# List of columns to sort by when reporting lvm fullreport's 'vgs' subreport.
# See 'pvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvs_sort_full = "pv_name"
# Configuration option report/lvs_sort_full.
# List of columns to sort by when reporting lvm fullreport's 'lvs' subreport.
# See 'lvs -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# lvs_sort_full = "vg_name,lv_name"
# Configuration option report/pvsegs_sort_full.
# List of columns to sort by when reporting for lvm fullreport's 'pvseg' subreport.
# See 'pvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# pvsegs_sort_full = "pv_uuid,pvseg_start"
# Configuration option report/segs_sort_full.
# List of columns to sort by when reporting lvm fullreport's 'seg' subreport.
# See 'lvs --segments -o help' for the list of possible fields.
# This configuration option has an automatic default value.
# segs_sort_full = "lv_uuid,seg_start"
# Configuration option report/mark_hidden_devices.
# Use brackets [] to mark hidden devices.
# This configuration option has an automatic default value.
# mark_hidden_devices = 1
# Configuration option report/two_word_unknown_device.
# Use the two words 'unknown device' in place of '[unknown]'.
# This is displayed when the device for a PV is not known.
# This configuration option has an automatic default value.
# two_word_unknown_device = 0
}
# Configuration section dmeventd.
# Settings for the LVM event daemon.
dmeventd {
# Configuration option dmeventd/mirror_library.
# The library dmeventd uses when monitoring a mirror device.
# libdevmapper-event-lvm2mirror.so attempts to recover from
# failures. It removes failed devices from a volume group and
# reconfigures a mirror as necessary. If no mirror library is
# provided, mirrors are not monitored through dmeventd.
# This configuration option has an automatic default value.
# mirror_library = "libdevmapper-event-lvm2mirror.so"
# Configuration option dmeventd/raid_library.
# This configuration option has an automatic default value.
# raid_library = "libdevmapper-event-lvm2raid.so"
# Configuration option dmeventd/snapshot_library.
# The library dmeventd uses when monitoring a snapshot device.
# libdevmapper-event-lvm2snapshot.so monitors the filling of snapshots
# and emits a warning through syslog when the usage exceeds 80%. The
# warning is repeated when 85%, 90% and 95% of the snapshot is filled.
# This configuration option has an automatic default value.
# snapshot_library = "libdevmapper-event-lvm2snapshot.so"
# Configuration option dmeventd/thin_library.
# The library dmeventd uses when monitoring a thin device.
# libdevmapper-event-lvm2thin.so monitors the filling of a pool
# and emits a warning through syslog when the usage exceeds 80%. The
# warning is repeated when 85%, 90% and 95% of the pool is filled.
# This configuration option has an automatic default value.
# thin_library = "libdevmapper-event-lvm2thin.so"
# Configuration option dmeventd/thin_command.
# The plugin runs command with each 5% increment when thin-pool data volume
# or metadata volume gets above 50%.
# Command which starts with 'lvm ' prefix is internal lvm command.
# You can write your own handler to customise behaviour in more details.
# User handler is specified with the full path starting with '/'.
# This configuration option has an automatic default value.
# thin_command = "lvm lvextend --use-policies"
# Configuration option dmeventd/vdo_library.
# The library dmeventd uses when monitoring a VDO pool device.
# libdevmapper-event-lvm2vdo.so monitors the filling of a pool
# and emits a warning through syslog when the usage exceeds 80%. The
# warning is repeated when 85%, 90% and 95% of the pool is filled.
# This configuration option has an automatic default value.
# vdo_library = "libdevmapper-event-lvm2vdo.so"
# Configuration option dmeventd/vdo_command.
# The plugin runs command with each 5% increment when VDO pool volume
# gets above 50%.
# Command which starts with 'lvm ' prefix is internal lvm command.
# You can write your own handler to customise behaviour in more details.
# User handler is specified with the full path starting with '/'.
# This configuration option has an automatic default value.
# vdo_command = "lvm lvextend --use-policies"
# Configuration option dmeventd/executable.
# The full path to the dmeventd binary.
# This configuration option has an automatic default value.
# executable = "/usr/sbin/dmeventd"
}
# Configuration section tags.
# Host tag settings.
# This configuration section has an automatic default value.
# tags {
# Configuration option tags/hosttags.
# Create a host tag using the machine name.
# The machine name is nodename returned by uname(2).
# This configuration option has an automatic default value.
# hosttags = 0
# Configuration section tags/<tag>.
# Replace this subsection name with a custom tag name.
# Multiple subsections like this can be created. The '@' prefix for
# tags is optional. This subsection can contain host_list, which is a
# list of machine names. If the name of the local machine is found in
# host_list, then the name of this subsection is used as a tag and is
# applied to the local machine as a 'host tag'. If this subsection is
# empty (has no host_list), then the subsection name is always applied
# as a 'host tag'.
#
# Example
# The host tag foo is given to all hosts, and the host tag
# bar is given to the hosts named machine1 and machine2.
# tags { foo { } bar { host_list = [ "machine1", "machine2" ] } }
#
# This configuration section has variable name.
# This configuration section has an automatic default value.
# tag {
# Configuration option tags/<tag>/host_list.
# A list of machine names.
# These machine names are compared to the nodename returned
# by uname(2). If the local machine name matches an entry in
# this list, the name of the subsection is applied to the
# machine as a 'host tag'.
# This configuration option does not have a default value defined.
# }
# }
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