lvchange

LVCHANGE(8)                                                        LVCHANGE(8)



NAME
       lvchange - change attributes of a logical volume

SYNOPSIS
       lvchange  [-A|--autobackup {y|n}] [-a|--available {y|n}] [-C|--contigu-
       ous   {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 changing the logical volume's  name
              ( see lvrename(8) ) safely.

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

DIAGNOSTICS
       lvchange returns an exit code of 0 for success or > 0 for error:

       1  invalid logical volume name
       2  error checking existence of volume group
       3  logical volume cannot be opened
       4  logical volume access permissions cannot be set
       5  logical volume status cannot be set
       6  logical volume allocation policy cannot be set
       7  VGDA for logical volume cannot be written to the physical volumes
       8  error changing read ahead sectors

       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 Volume 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)