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           vgchange  [--addtag  Tag]  [--alloc  AllocationPolicy] [-A|--autobackup
           {y|n}] [-a|--available [e|l] {y|n}] [--monitor  {y|n}]  [--poll  {y|n}]
           [-c|--clustered   {y|n}]   [-u|--uuid]   [-d|--debug]   [--deltag  Tag]
           [-h|--help] [--ignorelockingfailure]  [--ignoremonitoring]  [--sysinit]
           [--noudevsync]  [-l|--logicalvolume  MaxLogicalVolumes] [-p|--maxphysi-
           calvolumes MaxPhysicalVolumes] [-P|--partial]  [-s|--physicalextentsize
           PhysicalExtentSize[bBsSkKmMgGtTpPeE]]      [--refresh]      [-t|--test]
           [-v|--verbose] [--version] [-x|--resizeable {y|n}] [VolumeGroupName...]


           vgchange  allows  you  to  change  the attributes of one or more volume
           groups.  Its main purpose is to activate  and  deactivate  VolumeGroup-
           Name,  or  all  volume groups if none is specified.  Only active volume
           groups are subject to changes and allow access to  their  logical  vol-
           umes.   [Not  yet  implemented:  During  volume  group  activation,  if
           vgchange recognizes snapshot logical volumes which were dropped because
           they  ran out of space, it displays a message informing the administra-
           tor that such snapshots should be removed (see lvremove(8)).  ]


           See lvm for common options.
           -A, --autobackup {y|n}
                  Controls automatic backup of metadata  after  the  change.   See
                  vgcfgbackup (8).  Default is yes.
           -a, --available [e|l]{y|n}
                  Controls  the  availability of the logical volumes in the volume
                  group for input/output.  In other words, makes the logical  vol-
                  umes known/unknown to the kernel.
                  If  clustered locking is enabled, add 'e' to activate/deactivate
                  exclusively on one node or 'l' to  activate/deactivate  only  on
                  the  local node.  Logical volumes with single-host snapshots are
                  always activated exclusively because they can only  be  used  on
                  one node at once.
           -c, --clustered {y|n}
                  If  clustered  locking  is  enabled, this indicates whether this
                  Volume Group is shared  with  other  nodes  in  the  cluster  or
                  whether it contains only local disks that are not visible on the
                  other nodes.  If the cluster infrastructure is unavailable on  a
                  particular  node  at a particular time, you may still be able to
                  use Volume Groups that are not marked as clustered.
           -u, --uuid
                  Generate new random UUID for specified Volume Groups.
           --monitor {y|n}
                  Start or stop monitoring a mirrored or snapshot  logical  volume
                  with  dmeventd, if it is installed.  If a device used by a moni-
                  Indicates that vgchange(8) is being invoked  from  early  system
                  initialisation  scripts  (e.g.  rc.sysinit or an initrd), before
                  writeable 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 equiva-
                  lent   to   using   --ignorelockingfailure,  --ignoremonitoring,
                  --poll n and setting LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES envi-
                  ronment variable.
                  Disable  udev  synchronisation.  The  process  will not wait for
                  notification from udev.  It will continue  irrespective  of  any
                  possible udev processing in the background.  You should only use
                  this if udev is not running or has rules that ignore the devices
                  LVM2 creates.
                  Make  no  attempt  to interact with dmeventd unless --monitor is
                  specified.  Do not use this if dmeventd is already monitoring  a
           -l, --logicalvolume MaxLogicalVolumes
                  Changes  the  maximum logical volume number of an existing inac-
                  tive volume group.
           -p, --maxphysicalvolumes MaxPhysicalVolumes
                  Changes the maximum number of physical volumes that  can  belong
                  to  this  volume group.  For volume groups with metadata in lvm1
                  format, the limit is 255.  If the metadata uses lvm2 format, the
                  value  0  removes  this restriction: there is then no limit.  If
                  you have a large number of physical volumes in  a  volume  group
                  with  metadata in lvm2 format, for tool performance reasons, you
                  should consider some use of --pvmetadatacopies 0 as described in
           -s, --physicalextentsize PhysicalExtentSize[bBsSkKmMgGtTpPeE]
                  Changes  the  physical  extent  size on physical volumes of this
                  volume group.  A size suffix (k for kilobytes up to t  for  ter-
                  abytes)  is  optional,  megabytes is the default if no suffix is
                  present.  The default is 4 MB and it must be at least 1 KB and a
                  power of 2.
                  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 logical
                  volume must start and end on an extent boundary.
                  If the volume group metadata uses lvm1 format, extents can  vary
                  in  size  from 8KB to 16GB and there is a limit of 65534 extents
                  in each logical volume.  The default of 4 MB leads to a  maximum
                  logical volume size of around 256GB.
                  Enables or disables the extension/reduction of this volume group
                  with/by physical volumes.


           To activate all known volume groups in the system:
                vgchange -a y
           To change the maximum number of  logical  volumes  of  inactive  volume
           group vg00 to 128.
                vgchange -l 128 /dev/vg00


           lvchange(8), lvm(8), vgcreate(8)

    Sistina Software UK LVM TOOLS 2.02.66(2) (2010-05-20) VGCHANGE(8)


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