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NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | NOTES | EXAMPLES | SEE ALSO | COLOPHON |
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VGCHANGE(8) System Manager's Manual VGCHANGE(8)
vgchange - Change volume group attributes
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
-A|--autobackup y|n
--commandprofile String
--config String
-d|--debug
--deltag Tag
--detachprofile
--driverloaded y|n
-f|--force
-h|--help
-K|--ignoreactivationskip
--ignorelockingfailure
--ignoremonitoring
--lockopt String
--lockstart
--lockstop
--locktype sanlock|dlm|none
-l|--logicalvolume Number
--longhelp
-p|--maxphysicalvolumes Number
--metadataprofile String
--monitor y|n
--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
--sysinit
--systemid String
-t|--test
-u|--uuid
-v|--verbose
--version
--[vg]metadatacopies all|unmanaged|Number
-y|--yes
vgchange changes VG attributes, changes LV activation in the
kernel, and includes other utilities for VG maintenance.
Change a general VG attribute.
For options listed in parentheses, any one is
required, after which the others are optional.
vgchange
( -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 )
[ -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.
vgchange --monitor y|n
[ -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.
vgchange --poll y|n
[ -A|--autobackup y|n ]
[ -S|--select String ]
[ -f|--force ]
[ --ignorelockingfailure ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Activate or deactivate LVs.
vgchange -a|--activate y|n|ay
[ -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 ]
[ --ignoremonitoring ]
[ --noudevsync ]
[ --reportformat basic|json ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Reactivate LVs using the latest metadata.
vgchange --refresh
[ -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.
vgchange --systemid String VG
[ COMMON_OPTIONS ]
-
Start the lockspace of a shared VG in lvmlockd.
vgchange --lockstart
[ -S|--select String ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Stop the lockspace of a shared VG in lvmlockd.
vgchange --lockstop
[ -S|--select String ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Change the lock type for a shared VG.
vgchange --locktype sanlock|dlm|none VG
[ COMMON_OPTIONS ]
-
Common options for command:
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofile String ]
[ --config String ]
[ --driverloaded y|n ]
[ --lockopt String ]
[ --longhelp ]
[ --nolocking ]
[ --profile String ]
[ --version ]
-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, 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(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/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 overriden 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.
-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
settings. The String arg uses the same format as
lvm.conf, 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.
--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.
--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.
--nolocking
Disable locking.
--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 lvm.conf
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. 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.
--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.)
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: bBsSkKmMgGtTpPeE. b|B is bytes, s|S is sectors of
512 bytes, k|K is kilobytes, m|M is megabytes, g|G is
gigabytes, t|T is terabytes, p|P is petabytes, e|E is
exabytes. (This should not be confused with the output
control --units, where capital letters mean multiple of
1000.)
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.
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.
Activate all LVs in all VGs on all existing devices.
vgchange -a y
Change the maximum number of LVs for an inactive VG.
vgchange -l 128 vg00
lvm(8) lvm.conf(5) lvmconfig(8)
pvchange(8) pvck(8) pvcreate(8) pvdisplay(8) pvmove(8)
pvremove(8) pvresize(8) pvs(8) pvscan(8)
vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8)
vgconvert(8) vgdisplay(8) vgexport(8) vgextend(8) vgimport(8)
vgimportclone(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) lvm2-activation-generator(8)
blkdeactivate(8) lvmdump(8)
dmeventd(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8)
lvmdbusd(8)
lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)
This page is part of the lvm2 (Logical Volume Manager 2) project.
Information about the project can be found at
⟨http://www.sourceware.org/lvm2/⟩. If you have a bug report for
this manual page, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
This page was obtained from the tarball
https://github.com/lvmteam/lvm2/archive/v2_03_10.tar.gz fetched
from ⟨https://github.com/lvmteam/lvm2/releases⟩ on 2020-12-18.
If you discover any rendering problems in this HTML version of
the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to
the information in this COLOPHON (which is not part of the
original manual page), send a mail to man-pages@man7.org
Red Hat, Inc. LVM TOOLS 2.03.10(2) (2020-08-09) VGCHANGE(8)
Pages that refer to this page: lvmcache(7), lvmsystemid(7), lvchange(8), lvconvert(8), lvcreate(8), lvdisplay(8), lvextend(8), lvm2-activation-generator(8), lvm(8), lvmconfig(8), lvmdiskscan(8), lvm-fullreport(8), lvm-lvpoll(8), lvreduce(8), lvremove(8), lvrename(8), lvresize(8), lvs(8), lvscan(8), pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8), pvscan(8), vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgconvert(8), vgcreate(8), vgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8), vgsplit(8)
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