NAME
vgchange — Change volume group attributesSYNOPSIS
vgchange option_args position_args[ option_args ]
[ position_args ]
-a|--activate y|n|ay
--activationmode partial|degraded|complete
--addtag Tag
--alloc contiguous|cling|cling_by_tags|normal| anywhere| inherit
--autoactivation String
-A|--autobackup y|n
--commandprofile String
--config String
-d|--debug
--deltag Tag
--detachprofile
--devices PV
--devicesfile String
--driverloaded y|n
-f|--force
-h|--help
-K|--ignoreactivationskip
--ignorelockingfailure
--ignoremonitoring
--journal String
--lockopt String
--lockstart
--lockstop
--locktype sanlock|dlm|none
-l|--logicalvolume Number
--longhelp
-p|--maxphysicalvolumes Number
--metadataprofile String
--monitor y|n
--nohints
--nolocking
--noudevsync
-P|--partial
-s|--physicalextentsize Size[m|UNIT]
--poll y|n
--profile String
--pvmetadatacopies 0|1|2
-q|--quiet
--readonly
--refresh
--reportformat basic|json
-x|--resizeable y|n
-S|--select String
--setautoactivation y|n
--sysinit
--systemid String
-t|--test
-u|--uuid
-v|--verbose
--version
--[vg]metadatacopies all|unmanaged|Number
-y|--yes
DESCRIPTION
vgchange changes VG attributes, changes LV activation in the kernel, and includes other utilities for VG maintenance.USAGE
Change a general VG attribute.( -l|--logicalvolume
Number
-p|--maxphysicalvolumes Number
-u|--uuid
-s|--physicalextentsize Size[m|UNIT]
-x|--resizeable y|n
--addtag Tag
--deltag Tag
--alloc contiguous|cling|cling_by_tags|normal| anywhere| inherit
--pvmetadatacopies 0|1|2
--[vg]metadatacopies all|unmanaged|Number
--profile String
--detachprofile
--metadataprofile String
--setautoactivation y|n )
-p|--maxphysicalvolumes Number
-u|--uuid
-s|--physicalextentsize Size[m|UNIT]
-x|--resizeable y|n
--addtag Tag
--deltag Tag
--alloc contiguous|cling|cling_by_tags|normal| anywhere| inherit
--pvmetadatacopies 0|1|2
--[vg]metadatacopies all|unmanaged|Number
--profile String
--detachprofile
--metadataprofile String
--setautoactivation y|n )
[ -A|--autobackup
y|n ]
[ -S|--select String ]
[ -f|--force ]
[ --poll y|n ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Start or stop monitoring LVs from dmeventd.
[ -A|--autobackup
y|n ]
[ -S|--select String ]
[ -f|--force ]
[ --sysinit ]
[ --ignorelockingfailure ]
[ --poll y|n ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Start or stop processing LV conversions.
[ -A|--autobackup
y|n ]
[ -S|--select String ]
[ -f|--force ]
[ --ignorelockingfailure ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Activate or deactivate LVs.
[ -K|--ignoreactivationskip ]
[ -P|--partial ]
[ -A|--autobackup y|n ]
[ -S|--select String ]
[ -f|--force ]
[ --activationmode partial|degraded|complete ]
[ --sysinit ]
[ --readonly ]
[ --ignorelockingfailure ]
[ --monitor y|n ]
[ --poll y|n ]
[ --autoactivation String ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Reactivate LVs using the latest metadata.
[ -A|--autobackup
y|n ]
[ -S|--select String ]
[ -f|--force ]
[ --sysinit ]
[ --ignorelockingfailure ]
[ --poll y|n ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Change the system ID of a VG.
[ COMMON_OPTIONS ]
—
Start the lockspace of a shared VG in lvmlockd.
[ -S|--select String ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Stop the lockspace of a shared VG in lvmlockd.
[ -S|--select String ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ...
]
—
Change the lock type for a shared VG.
[ COMMON_OPTIONS ]
—
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofile String ]
[ --config String ]
[ --devices PV ]
[ --devicesfile String ]
[ --driverloaded y|n ]
[ --journal String ]
[ --lockopt String ]
[ --longhelp ]
[ --nohints ]
[ --nolocking ]
[ --profile String ]
[ --version ]
OPTIONS
-a|--activate
y|n|ay
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 makes LVs active, or
available. n 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 specifies
autoactivation, which is used by system-generated activation commands. By
default, LVs are autoactivated. An autoactivation property can be set on a VG
or LV to disable autoactivation, see --setautoactivation y|n in vgchange,
lvchange, vgcreate, and lvcreate. Display the property with vgs or lvs
"-o autoactivation". The lvm.conf(5)
auto_activation_volume_list includes names of VGs or LVs that should be
autoactivated, and anything not listed is not autoactivated. When
auto_activation_volume_list is undefined (the default), it has no effect. If
auto_activation_volume_list is defined and empty, no LVs are autoactivated.
Items included by auto_activation_volume_list will not be autoactivated if the
autoactivation property has been disabled. See lvmlockd(8) for more
information about activation options ey and sy for shared
VGs.
--activationmode
partial|degraded|complete
Determines if LV activation is allowed when PVs are missing, e.g. because of a
device failure. complete only allows LVs with no missing PVs to be
activated, and is the most restrictive mode. degraded allows RAID LVs
with missing PVs to be activated. (This does not include the
"mirror" type, see "raid1" instead.) partial allows
any LV with missing PVs to be activated, and should only be used for recovery
or repair. For default, see lvm.conf(5) activation_mode. See
lvmraid(7) for more information.
--addtag
Tag
Adds a tag to a PV, VG or LV. This option can be repeated to add multiple tags
at once. See lvm(8) for information about tags.
--alloc
contiguous|cling|cling_by_tags|normal|anywhere|inherit
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 overridden on the command line.
normal applies common sense rules such as not placing parallel stripes
on the same PV. inherit applies the VG policy to an LV.
contiguous requires new PEs be placed adjacent to existing PEs.
cling 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 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(8) for more information about allocation.
--autoactivation
String
Specify if autoactivation is being used from an event. This allows the command
to apply settings that are specific to event activation, such as device
scanning optimizations using pvs_online files created by event-based
pvscans.
-A|--autobackup
y|n
Specifies if metadata should be backed up automatically after a change. Enabling
this is strongly advised! See vgcfgbackup(8) for more
information.
--commandprofile
String
The command profile to use for command configuration. See lvm.conf(5) for
more information about profiles.
--config
String
Config settings for the command. These override lvm.conf(5) settings. The
String arg uses the same format as lvm.conf(5), or may use
section/field syntax. See lvm.conf(5) for more information about
config.
-d|--debug
...
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).
--deltag
Tag
Deletes a tag from a PV, VG or LV. This option can be repeated to delete
multiple tags at once. See lvm(8) for information about tags.
--detachprofile
Detaches a metadata profile from a VG or LV. See lvm.conf(5) for more
information about profiles.
--devices
PV
Restricts the devices that are visible and accessible to the command. Devices
not listed will appear to be missing. This option can be repeated, or accepts
a comma separated list of devices. This overrides the devices file.
--devicesfile
String
A file listing devices that LVM should use. The file must exist in
/etc/lvm/devices/ and is managed with the lvmdevices(8) command.
This overrides the lvm.conf(5) devices/devicesfile and
devices/use_devicesfile settings.
--driverloaded
y|n
If set to no, the command will not attempt to use device-mapper. For testing and
debugging.
-f|--force
...
Override various checks, confirmations and protections. Use with extreme
caution.
-h|--help
Display help text.
-K|--ignoreactivationskip
Ignore the "activation skip" LV flag during activation to allow LVs
with the flag set to be activated.
--ignorelockingfailure
Allows a command to continue with read-only metadata operations after locking
failures.
--ignoremonitoring
Do not interact with dmeventd unless --monitor is specified. Do not use this if
dmeventd is already monitoring a device.
--journal
String
Record information in the systemd journal. This information is in addition to
information enabled by the lvm.conf log/journal setting. command: record
information about the command. output: record the default command output.
debug: record full command debugging.
--lockopt
String
Used to pass options for special cases to lvmlockd. See lvmlockd(8) for
more information.
--lockstart
Start the lockspace of a shared VG in lvmlockd. lvmlockd locks becomes available
for the VG, allowing LVM to use the VG. See lvmlockd(8) for more
information.
--lockstop
Stop the lockspace of a shared VG in lvmlockd. lvmlockd locks become unavailable
for the VG, preventing LVM from using the VG. See lvmlockd(8) for more
information.
--locktype
sanlock|dlm|none
Change the VG lock type to or from a shared lock type used with lvmlockd. See
lvmlockd(8) for more information.
-l|--logicalvolume
Number
Sets the maximum number of LVs allowed in a VG.
--longhelp
Display long help text.
-p|--maxphysicalvolumes
Number
Sets the maximum number of PVs that can belong to the VG. The value 0 removes
any limitation. For large numbers of PVs, also see options --pvmetadatacopies,
and --vgmetadatacopies for improving performance.
--metadataprofile
String
The metadata profile to use for command configuration. See lvm.conf(5)
for more information about profiles.
--monitor
y|n
Start (yes) or stop (no) monitoring an LV with dmeventd. dmeventd monitors
kernel events for an LV, and performs automated maintenance for the LV in
reponse to specific events. See dmeventd(8) for more information.
--nohints
Do not use the hints file to locate devices for PVs. A command may read more
devices to find PVs when hints are not used. The command will still perform
standard hint file invalidation where appropriate.
--nolocking
Disable locking. Use with caution, concurrent commands may produce incorrect
results.
--noudevsync
Disables udev synchronisation. The process will not wait for notification from
udev. It will 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.
-P|--partial
Commands will do their best to activate LVs with missing PV extents. Missing
extents may be replaced with error or zero segments according to the
missing_stripe_filler setting. Metadata may not be changed with this
option.
-s|--physicalextentsize
Size[m|UNIT]
Sets the physical extent size of PVs in the VG. The value must be either a power
of 2 of at least 1 sector (where the sector size is the largest sector size of
the PVs currently used in the VG), or at least 128KiB. Once this value has
been set, it is difficult to change without recreating the VG, unless no
extents need moving. Before increasing the physical extent size, you might
need to use lvresize, pvresize and/or pvmove so that everything fits. For
example, every contiguous range of extents used in a LV must start and end on
an extent boundary.
--poll
y|n
When yes, start the background transformation of an LV. An incomplete
transformation, e.g. pvmove or lvconvert interrupted by reboot or crash, can
be restarted from the last checkpoint with --poll y. When no, background
transformation of an LV will not occur, and the transformation will not
complete. It may not be appropriate to immediately poll an LV after
activation, in which case --poll n can be used to defer polling until a later
--poll y command.
--profile
String
An alias for --commandprofile or --metadataprofile, depending on the
command.
--pvmetadatacopies
0|1|2
The number of metadata areas to set aside on a PV for storing VG metadata. When
2, one copy of the VG metadata is stored at the front of the PV and a second
copy is stored at the end. When 1, one copy of the VG metadata is stored at
the front of the PV. When 0, no copies of the VG metadata are stored on the
given PV. This may be useful in VGs containing many PVs (this places
limitations on the ability to use vgsplit later.)
-q|--quiet
...
Suppress output and log messages. Overrides --debug and --verbose. Repeat once
to also suppress any prompts with answer 'no'.
--readonly
Run the command in a special read-only mode which will read on-disk metadata
without needing to take any locks. This can be used to peek inside metadata
used by a virtual machine image while the virtual machine is running. No
attempt will be made to communicate with the device-mapper kernel driver, so
this option is unable to report whether or not LVs are actually in use.
--refresh
If the LV is active, reload its metadata. This is not necessary in normal
operation, but may be useful if something has gone wrong, or if some form of
manual LV sharing is being used.
--reportformat
basic|json
Overrides current output format for reports which is defined globally by the
report/output_format setting in lvm.conf(5). basic is the
original format with columns and rows. If there is more than one report per
command, each report is prefixed with the report name for identification.
json produces report output in JSON format. See lvmreport(7) for
more information.
-x|--resizeable
y|n
Enables or disables the addition or removal of PVs to/from a VG (by
vgextend/vgreduce).
-S|--select
String
Select objects for processing and reporting based on specified criteria. The
criteria syntax is described by --select help and lvmreport(7).
For reporting commands, one row is displayed for each object matching the
criteria. See --options help for selectable object fields. Rows can be
displayed with an additional "selected" field (-o selected) showing
1 if the row matches the selection and 0 otherwise. For non-reporting commands
which process LVM entities, the selection is used to choose items to
process.
--setautoactivation
y|n
Set the autoactivation property on a VG or LV. Display the property with vgs or
lvs "-o autoactivation". When the autoactivation property is
disabled, the VG or LV will not be activated by a command doing autoactivation
(vgchange, lvchange, or pvscan using -aay.) If autoactivation is disabled on a
VG, no LVs will be autoactivated in that VG, and the LV autoactivation
property has no effect. If autoactivation is enabled on a VG, autoactivation
can be disabled for individual LVs.
--sysinit
Indicates that vgchange/lvchange is being invoked from early system
initialisation scripts (e.g. rc.sysinit or an initrd), before writable
filesystems are available. As such, some functionality needs to be disabled
and this option acts as a shortcut which selects an appropriate set of
options. Currently, this is equivalent to using --ignorelockingfailure,
--ignoremonitoring, --poll n, and setting env var
LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES. vgchange/lvchange skip autoactivation,
and defer to pvscan autoactivation.
--systemid
String
Changes the system ID of the VG. Using this option requires caution because the
VG may become foreign to the host running the command, leaving the host unable
to access it. See lvmsystemid(7) for more information.
-t|--test
Run in test mode. Commands will not update metadata. This is implemented by
disabling all metadata writing but nevertheless returning success to the
calling function. This may lead to unusual error messages in multi-stage
operations if a tool relies on reading back metadata it believes has changed
but hasn't.
-u|--uuid
Generate new random UUID for specified VGs.
-v|--verbose
...
Set verbose level. Repeat from 1 to 4 times to increase the detail of messages
sent to stdout and stderr.
--version
Display version information.
--[vg]metadatacopies
all|unmanaged|Number
Number of copies of the VG metadata that are kept. VG metadata is kept in VG
metadata areas on PVs in the VG, i.e. reserved space at the start and/or end
of the PVs. Keeping a copy of the VG metadata on every PV can reduce
performance in VGs containing a large number of PVs. When this number is set
to a non-zero value, LVM will automatically choose PVs on which to store
metadata, using the metadataignore flags on PVs to achieve the specified
number. The number can also be replaced with special string values:
unmanaged causes LVM to not automatically manage the PV metadataignore
flags. all causes LVM to first clear the metadataignore flags on all
PVs, and then to become unmanaged.
-y|--yes
Do not prompt for confirmation interactively but always assume the answer yes.
Use with extreme caution. (For automatic no, see -qq.)
VARIABLES
- VG
- Volume Group name. See lvm(8) for valid names.
- Tag
- Tag name. See lvm(8) for information about tag names and using tags in place of a VG, LV or PV.
- Select
- Select indicates that a required positional parameter can be omitted if the --select option is used. No arg appears in this position.
- String
- See the option description for information about the string content.
- Size[UNIT]
- Size is an input number that accepts an optional unit. Input units are always treated as base two values, regardless of capitalization, e.g. 'k' and 'K' both refer to 1024. The default input unit is specified by letter, followed by |UNIT. UNIT represents other possible input units: b|B is bytes, s|S is sectors of 512 bytes, k|K is KiB, m|M is MiB, g|G is GiB, t|T is TiB, p|P is PiB, e|E is EiB. (This should not be confused with the output control --units, where capital letters mean multiple of 1000.)
ENVIRONMENT VARIABLES
See lvm(8) for information about environment variables used by lvm. For example, LVM_VG_NAME can generally be substituted for a required VG parameter.NOTES
If vgchange recognizes COW snapshot LVs that were dropped because they ran out of space, it displays a message informing the administrator that the snapshots should be removed.EXAMPLES
Activate all LVs in all VGs on all existing devices.SEE ALSO
lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(8), pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8), pvscan(8), vgcfgbackup(8), vgcfgrestore(8), , vgck(8), vgcreate(8), vgconvert(8), vgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgimportdevices(8), vgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8), vgsplit(8), lvcreate(8), lvchange(8), lvconvert(8), lvdisplay(8), lvextend(8), lvreduce(8), lvremove(8), lvrename(8), lvresize(8), lvs(8), lvscan(8), lvm-fullreport(8), lvm-lvpoll(8), blkdeactivate(8), lvmdump(8), dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8), lvmdbusd(8), fsadm(8), lvmsystemid(7), lvmreport(7), lvmraid(7), lvmthin(7), lvmcache(7)LVM TOOLS 2.03.16(2) (2022-05-18) | Red Hat, Inc. |