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

NAME

       lvextend - extend the size of a logical volume

SYNOPSIS

       lvextend  [-A|--autobackup {y|n}] [-d|--debug] [-h|--help] {-l|--extents [+]LogicalExtentsNumber| -L|--size [+]LogicalVolumeSize[kKmMgGtT]}
       [-v|--verbose] LogicalVolumePath [PhysicalVolumePath...]

DESCRIPTION

       lvextend allows you to extend the size of a logical volume.  Extension of snapshot logical volumes (see lvcreate(8) for information to cre-
       ate snapshots) is supprted as well.

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

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

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

       -l, --extents [+]LogicalExtentsNumber
	      Extend  or  set  the  logical volume size in units of logical extents.  With the + sign the value is added to the actual size of the
	      logical volume and without it, the value is taken as an absolute one.

       -L, --size [+]LogicalVolumeSize[kKmMgGtT]
	      Extend or set the logical volume size in units in units of megabytes.  A size suffix of M for megabytes, G for gigabytes	or  T  for
	      terabytes  is  optional.	 With  the + sign the value is added to the actual size of the logical volume and without it, the value is
	      taken as an absolute one.

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

Examples
       "lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3" tries to extend the size of that logical volume by 54MB on physical volume /dev/sdk3.  This is
       only possible if /dev/sdk3 is a member of volume group vg01 and there are enough free physical extents in it.

DIAGNOSTICS

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

       1  no logical volume name on command line
       2  invalid physical volume name on command line
       3  invalid logical volume name
       4  error checking existence of logical volume
       5  logical volume not active
       6  error reading VGDA
       7  requested physical volume not in this volume group
       8  error getting index of logical volume
       9  logical volume size not bigger than before
       10 logical volume size exceeds volume group free capacity
       11 logical volume size exceeds maximum
       12 error setting up VGDA for logical volume extension
       13 error extending VGDA for logical volume in kernel
       14 error writing VGDA to physical volume(s)
       15 error getting index for read/write statistics transfer
       16 error getting status of logical volume from kernel
       17 error setting up copy on write exception table

       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 turned off.

       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  com-
	      plete path.

See also
       lvm(8), lvcreate(8), lvreduce(8), lvchange(8)

AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen						     LVM TOOLS							       LVEXTEND(8)