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lvchange



SYNOPSIS

       lvchange  [-A|--autobackup  {y|n}]  [-a|--available {y|n}]
       [-C|--contiguous    {y|n}]    [-d|--debug]     [-h|--help]
       [-p|--permission {r|rw}] [-r|--readahead ReadAheadSectors]
       [-v/--verbose] LogicalVolumePath [LogicalVolumePath...]


DESCRIPTION

       lvchange allows you to change the attributes of a  logical
       volume.

   OPTIONS
       -A, --autobackup y/n
              Controls  automatic backup of VG metadata after the
              change ( see vgcfgbackup(8) ). Default is yes.

       -a, --available y/n
              Controls the availability of  the  logical  volumes
              for  use.  This is (among others) useful for chang­
              ing the logical volume's name ( see  lvrename(8)  )
              safely.

       -C, --contiguous y/n
              Tries  to  set  or resets the contiguous allocation
              policy for logical volumes. It's only  possible  to
              change a non-contiguous logical volume's allocation
              policy to contiguous, if all of the allocated phys­
              ical extents are already contiguous.

       -d, --debug
              Enables  additional  debugging  output (if compiled
              with DEBUG).

       -h, --help
              Print a usage message on standard output  and  exit
              successfully.

       -p, --permission r/w
              Change    access   permission   to   read-only   or
              read/write.

       -r, --readahead ReadAheadSectors
              Change read ahead sector count per logical  between
              2 and 120.

       -v, --verbose
              Gives  verbose runtime information about lvchange's
              activities.


Examples

       "lvchange -x n /dev/vg00/lvol1" prevents the allocation of
       any  physical  extents  on  logical volume lvol1 in volume
       group vg00.
       95 driver/module not in kernel
       96 invalid I/O protocol version
       97 error locking logical volume manager
       98 invalid lvmtab (run vgscan(8))
       99 invalid command line


ENVIRONMENT VARIABLES

       LVM_AUTOBACKUP
              If  this variable is set to "no" then the automatic
              backup of VG metadata is disabled.

       LVM_VG_MAX_BACKUPS
              This variable determines the backup  history  depth
              of  kept VGDA copy files in /etc/lvmconf. It can be
              set to a positive number between 0  and  999.   The
              higher  this  number  is,  the more changes you can
              restore using vgcfgrestore(8).

       LVM_VG_NAME
              The default Volume Group Name to use. Setting  this
              variable enables you to enter just the Logical Vol­
              ume Name rather than its complete path.


See also

       lvm(8), lvcreate(8)


AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen           LVM TOOLS                 LVCHANGE(8)
  
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