<\/a> <\/h2>\nChange a general LV attribute.
For options listed in parentheses, any one is
required, after which the others are optional.<\/p>\n
lvchange<\/b><\/p>\n
( \u2212C<\/b>|\u2212\u2212contiguous y<\/b>|n<\/b>,
\u2212p<\/b>|\u2212\u2212permission rw<\/b>|r<\/b>,
\u2212r<\/b>|\u2212\u2212readahead auto<\/b>|none<\/b>|Number<\/i>,
\u2212k<\/b>|\u2212\u2212setactivationskip y<\/b>|n<\/b>,
\u2212Z<\/b>|\u2212\u2212zero y<\/b>|n<\/b>,
\u2212M<\/b>|\u2212\u2212persistent n<\/b>,
\u2212\u2212addtag<\/b> Tag<\/i>,
\u2212\u2212deltag<\/b> Tag<\/i>,
\u2212\u2212alloc contiguous<\/b>|cling<\/b>|cling_by_tags<\/b>|normal<\/b>|anywhere<\/b>|inherit<\/b>,
\u2212\u2212compression y<\/b>|n<\/b>,
\u2212\u2212deduplication y<\/b>|n<\/b>,
\u2212\u2212detachprofile<\/b>,
\u2212\u2212metadataprofile<\/b> String<\/i>,
\u2212\u2212profile<\/b> String<\/i>,
\u2212\u2212errorwhenfull y<\/b>|n<\/b>,
\u2212\u2212discards passdown<\/b>|nopassdown<\/b>|ignore<\/b>,
\u2212\u2212cachemode writethrough<\/b>|writeback<\/b>|passthrough<\/b>,
\u2212\u2212cachepolicy<\/b> String<\/i>,
\u2212\u2212cachesettings<\/b> String<\/i>,
\u2212\u2212[raid]minrecoveryrate<\/b> Size<\/i>[k|UNIT],
\u2212\u2212[raid]maxrecoveryrate<\/b> Size<\/i>[k|UNIT],
\u2212\u2212[raid]writebehind<\/b> Number<\/i>,
\u2212\u2212[raid]writemostly<\/b> PV<\/i>[:t<\/b>|n<\/b>|y<\/b>] )
VG<\/i>|LV<\/i>|Tag<\/i>|Select<\/i> …
[ \u2212a<\/b>|\u2212\u2212activate y<\/b>|n<\/b>|ay<\/b> ]
[ \u2212\u2212poll y<\/b>|n<\/b> ]
[ \u2212\u2212monitor y<\/b>|n<\/b> ]
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Resyncronize a mirror or raid LV.
Use to reset \u2019R\u2019 attribute on a not initially synchronized LV.<\/p>\n
lvchange \u2212\u2212resync<\/b> VG<\/i>|LV_mirror_raid<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ \u2212a<\/b>|\u2212\u2212activate y<\/b>|n<\/b>|ay<\/b> ]
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Resynchronize or check a raid LV.<\/p>\n
lvchange \u2212\u2212syncaction check<\/b>|repair<\/b> VG<\/i>|LV_raid<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Reconstruct data on specific PVs of a raid LV.<\/p>\n
lvchange \u2212\u2212rebuild<\/b> PV VG<\/i>|LV_raid<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Activate or deactivate an LV.<\/p>\n
lvchange \u2212a<\/b>|\u2212\u2212activate y<\/b>|n<\/b>|ay<\/b> VG<\/i>|LV<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ \u2212P<\/b>|\u2212\u2212partial<\/b> ]
[ \u2212K<\/b>|\u2212\u2212ignoreactivationskip<\/b> ]
[ \u2212\u2212activationmode partial<\/b>|degraded<\/b>|complete<\/b> ]
[ \u2212\u2212poll y<\/b>|n<\/b> ]
[ \u2212\u2212monitor y<\/b>|n<\/b> ]
[ \u2212\u2212ignorelockingfailure<\/b> ]
[ \u2212\u2212sysinit<\/b> ]
[ \u2212\u2212readonly<\/b> ]
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Reactivate an LV using the latest metadata.<\/p>\n
lvchange \u2212\u2212refresh<\/b> VG<\/i>|LV<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ \u2212P<\/b>|\u2212\u2212partial<\/b> ]
[ \u2212\u2212activationmode partial<\/b>|degraded<\/b>|complete<\/b> ]
[ \u2212\u2212poll y<\/b>|n<\/b> ]
[ \u2212\u2212monitor y<\/b>|n<\/b> ]
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Start or stop monitoring an LV from dmeventd.<\/p>\n
lvchange \u2212\u2212monitor y<\/b>|n<\/b> VG<\/i>|LV<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Start or stop processing an LV conversion.<\/p>\n
lvchange \u2212\u2212poll y<\/b>|n<\/b> VG<\/i>|LV<\/i>|Tag<\/i>|Select<\/i> …<\/p>\n
[ \u2212\u2212monitor y<\/b>|n<\/b> ]
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Make the minor device number persistent for an LV.<\/p>\n
lvchange \u2212M<\/b>|\u2212\u2212persistent y \u2212\u2212minor<\/b> Number LV<\/i><\/p>\n
[ \u2212j<\/b>|\u2212\u2212major<\/b> Number<\/i> ]
[ \u2212a<\/b>|\u2212\u2212activate y<\/b>|n<\/b>|ay<\/b> ]
[ \u2212\u2212poll y<\/b>|n<\/b> ]
[ \u2212\u2212monitor y<\/b>|n<\/b> ]
[ COMMON_OPTIONS ]<\/p>\n
–<\/p>\n
Common options for command:<\/p>\n
[ \u2212A<\/b>|\u2212\u2212autobackup y<\/b>|n<\/b> ]
[ \u2212f<\/b>|\u2212\u2212force<\/b> ]
[ \u2212S<\/b>|\u2212\u2212select<\/b> String<\/i> ]
[ \u2212\u2212ignoremonitoring<\/b> ]
[ \u2212\u2212noudevsync<\/b> ]
[ \u2212\u2212reportformat basic<\/b>|json<\/b> ]<\/p>\n
Common options for lvm:<\/p>\n
[ \u2212d<\/b>|\u2212\u2212debug<\/b> ]
[ \u2212h<\/b>|\u2212\u2212help<\/b> ]
[ \u2212q<\/b>|\u2212\u2212quiet<\/b> ]
[ \u2212t<\/b>|\u2212\u2212test<\/b> ]
[ \u2212v<\/b>|\u2212\u2212verbose<\/b> ]
[ \u2212y<\/b>|\u2212\u2212yes<\/b> ]
[ \u2212\u2212commandprofile<\/b> String<\/i> ]
[ \u2212\u2212config<\/b> String<\/i> ]
[ \u2212\u2212driverloaded y<\/b>|n<\/b> ]
[ \u2212\u2212lockopt<\/b> String<\/i> ]
[ \u2212\u2212longhelp<\/b> ]
[ \u2212\u2212nolocking<\/b> ]
[ \u2212\u2212profile<\/b> String<\/i> ]
[ \u2212\u2212version<\/b> ]<\/p>\n\n\n| <\/td>\n | \n \u2212a<\/b>|\u2212\u2212activate y<\/b>|n<\/b>|ay<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Change the active state of LVs. An active LV can be used through a block device, allowing data on the LV to be accessed. y<\/b> makes LVs active, or available. n<\/b> makes LVs inactive, or unavailable. The block device for the LV is added or removed from the system using device-mapper in the kernel. A symbolic link \/dev\/VGName\/LVName pointing to the device node is also added\/removed. All software and scripts should access the device through the symbolic link and present this as the name of the device. The location and name of the underlying device node may depend on the distribution, configuration (e.g. udev), or release version. ay<\/b> specifies autoactivation, in which case an LV is activated only if it matches an item in lvm.conf activation\/auto_activation_volume_list. If the list is not set, all LVs are considered to match, and if if the list is set but empty, no LVs match. Autoactivation should be used during system boot to make it possible to select which LVs should be automatically activated by the system. See lvmlockd<\/b>(8) for more information about activation options ey<\/b> and sy<\/b> for shared VGs.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212activationmode partial<\/b>|degraded<\/b>|complete<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Determines if LV activation is allowed when PVs are missing, e.g. because of a device failure. complete<\/b> only allows LVs with no missing PVs to be activated, and is the most restrictive mode. degraded<\/b> allows RAID LVs with missing PVs to be activated. (This does not include the “mirror” type, see “raid1” instead.) partial<\/b> allows any LV with missing PVs to be activated, and should only be used for recovery or repair. For default, see lvm.conf\/activation_mode. See lvmraid<\/b>(7) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212addtag<\/b> Tag<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Adds a tag to a PV, VG or LV. This option can be repeated to add multiple tags at once. See lvm<\/b>(8) for information about tags.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212alloc contiguous<\/b>|cling<\/b>|cling_by_tags<\/b>|normal<\/b>|anywhere<\/b>|inherit<\/b><\/p>\n<\/td>\n<\/tr>\n<\/table>\n Determines the allocation policy when a command needs to allocate Physical Extents (PEs) from the VG. Each VG and LV has an allocation policy which can be changed with vgchange\/lvchange, or overriden on the command line. normal<\/b> applies common sense rules such as not placing parallel stripes on the same PV. inherit<\/b> applies the VG policy to an LV. contiguous<\/b> requires new PEs be placed adjacent to existing PEs. cling<\/b> places new PEs on the same PV as existing PEs in the same stripe of the LV. If there are sufficient PEs for an allocation, but normal does not use them, anywhere<\/b> will use them even if it reduces performance, e.g. by placing two stripes on the same PV. Optional positional PV args on the command line can also be used to limit which PVs the command will use for allocation. See lvm<\/b>(8) for more information about allocation.<\/p>\n\n\n| <\/td>\n | \n \u2212A<\/b>|\u2212\u2212autobackup y<\/b>|n<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Specifies if metadata should be backed up automatically after a change. Enabling this is strongly advised! See vgcfgbackup<\/b>(8) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212cachemode writethrough<\/b>|writeback<\/b>|passthrough<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Specifies when writes to a cache LV should be considered complete. writeback<\/b> considers a write complete as soon as it is stored in the cache pool. writethough<\/b> considers a write complete only when it has been stored in both the cache pool and on the origin LV. While writethrough may be slower for writes, it is more resilient if something should happen to a device associated with the cache pool LV. With passthrough<\/b>, all reads are served from the origin LV (all reads miss the cache) and all writes are forwarded to the origin LV; additionally, write hits cause cache block invalidates. See lvmcache<\/b>(7) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212cachepolicy<\/b> String<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Specifies the cache policy for a cache LV. See lvmcache<\/b>(7) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212cachesettings<\/b> String<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Specifies tunable values for a cache LV in “Key = Value” form. Repeat this option to specify multiple values. (The default values should usually be adequate.) The special string value default<\/b> switches settings back to their default kernel values and removes them from the list of settings stored in LVM metadata. See lvmcache<\/b>(7) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212commandprofile<\/b> String<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n The command profile to use for command configuration. See lvm.conf<\/b>(5) for more information about profiles.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212compression y<\/b>|n<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Controls whether compression is enabled or disable for VDO volume. See lvmvdo<\/b>(7) for more information about VDO usage.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212config<\/b> String<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Config settings for the command. These override lvm.conf settings. The String arg uses the same format as lvm.conf, or may use section\/field syntax. See lvm.conf<\/b>(5) for more information about config.<\/p>\n\n\n| <\/td>\n | \n \u2212C<\/b>|\u2212\u2212contiguous y<\/b>|n<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Sets or resets the contiguous allocation policy for LVs. Default is no contiguous allocation based on a next free principle. It is only possible to change a non-contiguous allocation policy to contiguous if all of the allocated physical extents in the LV are already contiguous.<\/p>\n \n\n| <\/td>\n | \n \u2212d<\/b>|\u2212\u2212debug<\/b> …<\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Set debug level. Repeat from 1 to 6 times to increase the detail of messages sent to the log file and\/or syslog (if configured).<\/p>\n \n\n| <\/td>\n | \n \u2212\u2212deduplication y<\/b>|n<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Controls whether deduplication is enabled or disable for VDO volume. See lvmvdo<\/b>(7) for more information about VDO usage.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212deltag<\/b> Tag<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Deletes a tag from a PV, VG or LV. This option can be repeated to delete multiple tags at once. See lvm<\/b>(8) for information about tags.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212detachprofile<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Detaches a metadata profile from a VG or LV. See lvm.conf<\/b>(5) for more information about profiles.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212discards passdown<\/b>|nopassdown<\/b>|ignore<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Specifies how the device-mapper thin pool layer in the kernel should handle discards. ignore<\/b> causes the thin pool to ignore discards. nopassdown<\/b> causes the thin pool to process discards itself to allow reuse of unneeded extents in the thin pool. passdown<\/b> causes the thin pool to process discards itself (like nopassdown) and pass the discards to the underlying device. See lvmthin<\/b>(7) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212\u2212driverloaded y<\/b>|n<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n If set to no, the command will not attempt to use device-mapper. For testing and debugging.<\/p>\n \n\n| <\/td>\n | \n \u2212\u2212errorwhenfull y<\/b>|n<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Specifies thin pool behavior when data space is exhausted. When yes, device-mapper will immediately return an error when a thin pool is full and an I\/O request requires space. When no, device-mapper will queue these I\/O requests for a period of time to allow the thin pool to be extended. Errors are returned if no space is available after the timeout. (Also see dm-thin\u2212pool kernel module option no_space_timeout.) See lvmthin<\/b>(7) for more information.<\/p>\n\n\n| <\/td>\n | \n \u2212f<\/b>|\u2212\u2212force<\/b> …<\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Override various checks, confirmations and protections. Use with extreme caution.<\/p>\n \n\n| <\/td>\n | \n \u2212h<\/b>|\u2212\u2212help<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Display help text.<\/p>\n \n\n| <\/td>\n | \n \u2212K<\/b>|\u2212\u2212ignoreactivationskip<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Ignore the “activation skip” LV flag during activation to allow LVs with the flag set to be activated.<\/p>\n \n\n| <\/td>\n | \n \u2212\u2212ignorelockingfailure<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Allows a command to continue with read-only metadata operations after locking failures.<\/p>\n \n\n| <\/td>\n | \n \u2212\u2212ignoremonitoring<\/b><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Do not interact with dmeventd unless \u2212\u2212monitor is specified. Do not use this if dmeventd is already monitoring a device.<\/p>\n \n\n| <\/td>\n | \n \u2212\u2212lockopt<\/b> String<\/i><\/p>\n<\/td>\n | <\/td>\n<\/tr>\n<\/table>\n Used to pass options for special cases to lvmlockd. See lvmlockd<\/b>(8) for more information.<\/p>\n | | | | | | | | | | | | | | | | | | | | | | | | |