Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Resizing a Volume
246 VERITAS Volume Manager Administrator’s Guide
Resizing Volumes using vxresize
Use the vxresize command to resize a volume containing a file system. Although other
commands can be used to resize volumes containing file systems, the vxresize
command offers the advantage of automatically resizing certain types of file system as
well as the volume.
See the following table for details of what operations are permitted and whether the file
system must first be unmounted to resize the file system:
For example, the following command resizes the 1-gigabyte volume, homevol, in the disk
group, mydg, that contains a VxFS file system to 10 gigabytes using the spare disks
mydg10 and mydg11:
# vxresize -g mydg -b -F vxfs -t homevolresize homevol 10g \
mydg10 mydg11
The -b option specifies that this operation runs in the background. Its progress can be
monitored by specifying the task tag homevolresize to the vxtask command.
Note the following restrictions for using vxresize:
◆ vxresize works with VxFS, JFS (derived from VxFS) and HFS file systems only.
◆ In some situations, when resizing large volumes, vxresize may take a long time to
complete.
◆ 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.
Permitted Resizing Operations on File Systems
Online JFS
(Full-VxFS)
Base JFS
(Lite-VxFS)
HFS
Mounted File System Grow and shrink Not allowed Not allowed
Unmounted File System Grow only Grow only Grow only