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NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | NOTES | EXAMPLES | SEE ALSO | COLOPHON |
VGCHANGE(8) System Manager's Manual VGCHANGE(8)
vgchange - Change volume group attributes
vgchange option_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
-c|--clustered y|n
--commandprofile String
--config String
-d|--debug
--deltag Tag
--detachprofile
--driverloaded y|n
-f|--force
-h|--help
-K|--ignoreactivationskip
--ignorelockingfailure
--ignoremonitoring
--ignoreskippedcluster
--lockopt String
--lockstart
--lockstop
--locktype sanlock|dlm|none
-l|--logicalvolume Number
--longhelp
-p|--maxphysicalvolumes Number
--metadataprofile String
--monitor y|n
--noudevsync
-P|--partial
-s|--physicalextentsize Size[m|UNIT]
--poll y|n
--profile String
--pvmetadatacopies 0|1|2
-q|--quiet
--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,
-c|--clustered y|n,
-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,
--systemid String,
--locktype sanlock|dlm|none,
--profile String,
--detachprofile,
--metadataprofile String )
[ --poll y|n ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Start or stop monitoring LVs from dmeventd.
vgchange --monitor y|n
[ --sysinit ]
[ --ignorelockingfailure ]
[ --poll y|n ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Start or stop processing LV conversions.
vgchange --poll y|n
[ --ignorelockingfailure ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Activate or deactivate LVs.
vgchange -a|--activate y|n|ay
[ -K|--ignoreactivationskip ]
[ -P|--partial ]
[ --activationmode partial|degraded|complete ]
[ --sysinit ]
[ --ignorelockingfailure ]
[ --monitor y|n ]
[ --poll y|n ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Reactivate LVs using the latest metadata.
vgchange --refresh
[ --sysinit ]
[ --ignorelockingfailure ]
[ --poll y|n ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Start the lockspace of a shared VG in lvmlockd.
vgchange --lockstart
[ --lockopt String ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Stop the lockspace of a shared VG in lvmlockd.
vgchange --lockstop
[ --lockopt String ]
[ COMMON_OPTIONS ]
[ VG|Tag|Select ... ]
-
Common options for command:
[ -A|--autobackup y|n ]
[ -f|--force ]
[ -S|--select String ]
[ --ignoremonitoring ]
[ --ignoreskippedcluster ]
[ --noudevsync ]
[ --reportformat basic|json ]
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofile String ]
[ --config String ]
[ --driverloaded y|n ]
[ --longhelp ]
[ --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. See clvmd(8) for more information
about activation options ey, sy, ly and ln for clustered 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.
-c|--clustered y|n
Change the clustered property of a VG using clvmd. See
clvmd(8) for more information about clustered VGs.
--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.
--ignoreskippedcluster
Use to avoid exiting with an non-zero status code if the
command is run without clustered locking and clustered VGs are
skipped.
--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.
--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 (starting in the 5th sector). 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'.
--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. When used in
conjunction with lvmetad enabled and running,
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) lvmetad(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) clvmd(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, send it to linux-lvm@redhat.com. This page was obtained
from the project's upstream Git repository
⟨git://sourceware.org/git/lvm2.git⟩ on 2017-07-05. 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 2.02.173(2)-git (2017-06-28) 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)