vgchange(images) - phpMan

VGCHANGE(8)                 System Manager's Manual                VGCHANGE(8)

NAME
       vgchange - Change volume group attributes
SYNOPSIS
       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
        -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
DESCRIPTION
       vgchange  changes  VG  attributes, changes LV activation in the kernel,
       and includes other utilities for VG maintenance.
USAGE
       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|any-
           where|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 ]
           [    --ignoreskippedcluster ]
           [    --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 ]
           [    --ignoreskippedcluster ]
           [    --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 ]
           [    --ignoreskippedcluster ]
           [    --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 ]
           [    --ignorelockingfailure ]
           [    --monitor y|n ]
           [    --poll y|n ]
           [    --ignoremonitoring ]
           [    --ignoreskippedcluster ]
           [    --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 ]
           [    --ignoreskippedcluster ]
           [    --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 ]
           [    --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, in which case an
              LV is activated only if it matches an item in lvm.conf activa-
              tion/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 sys-
              tem boot to make it possible to select which LVs should be auto-
              matically 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 acti-
              vated.  (This does not include the "mirror" type, see "raid1"
              instead.)  partial allows any LV with missing PVs to be acti-
              vated, 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 allo-
              cate 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 infor-
              mation 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 set-
              tings.  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 lvm-
              lockd(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 auto-
              mated 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 set-
              ting.  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 meta-
              data are stored on the given PV.  This may be useful in VGs con-
              taining many PVs (this places limitations on the ability to use
              vgsplit later.)
       -q|--quiet ...
              Suppress output and log messages. Overrides --debug and --ver-
              bose.  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 addi-
              tional "selected" field (-o selected) showing 1 if the row
              matches the selection and 0 otherwise.  For non-reporting com-
              mands 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 func-
              tionality needs to be disabled and this option acts as a short-
              cut which selects an appropriate set of options. Currently, this
              is equivalent to using --ignorelockingfailure, --ignoremonitor-
              ing, --poll n, and setting env var LVM_SUPPRESS_LOCKING_FAIL-
              URE_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 lvmsys-
              temid(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 meta-
              data, using the metadataignore flags on PVs to achieve the spec-
              ified 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 con-
              tent.
       Size[UNIT]
              Size is an input number that accepts an  optional  unit.   Input
              units are always treated as base two values, regardless of capi-
              talization, e.g. 'k' and 'K' both refer to  1024.   The  default
              input unit is specified by letter, followed by |UNIT.  UNIT rep-
              resents 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.)
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.
       vgchange -a y
       Change the maximum number of LVs for an inactive VG.
       vgchange -l 128 vg00
SEE ALSO
       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) vgcon-
       vert(8)  vgdisplay(8)  vgexport(8)  vgextend(8)  vgimport(8)  vgimport-
       clone(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)  lvre-
       duce(8) lvremove(8) lvrename(8) lvresize(8) lvs(8) lvscan(8)
       lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeacti-
       vate(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)

Red Hat, Inc.      LVM TOOLS 2.02.187(2)-RHEL7 (2020-03-24)        VGCHANGE(8)