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286 Administering volumes
Resizing a volume
■ Resizing a volume with a usage type other than FSGEN or RAID5 can result
in loss of data. If such an operation is required, use the -f option to forcibly
resize such a volume.
■ You cannot resize a volume that contains plexes with different layout types.
Attempting to do so results in the following error message:
VxVM vxresize ERROR V-5-1-2536 Volume volume has different
organization in each mirror
To resize such a volume successfully, you must first reconfigure it so that
each data plex has the same layout.
For more information about the vxresize command, see the vxresize(1M)
manual page.
Resizing volumes using vxassist
The following modifiers are used with the vxassist command to resize a
volume:
growto Increase volume to a specified length.
growby Increase volume by a specified amount.
shrinkto Reduce volume to a specified length.
shrinkby Reduce volume by a specified amount.
Extending to a given length
To extend a volume to a specific length, use the following command:
# vxassist [-b] [-g diskgroup] growto volume length
Note: If specified, the -b option makes growing the volume a background task.
For example, to extend volcat to 2000 sectors, use the following command:
# vxassist -g mydg growto volcat 2000
Note: If you previously performed a relayout on the volume, additionally specify
the attribute
layout=nodiskalign to the growto command if you want the
subdisks to be grown using contiguous disk space.
Extending by a given length
To extend a volume by a specific length, use the following command:
# vxassist [-b] [-g diskgroup] growby volume length