Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

pl archive-01 archive ENABLED ACTIVE 20480 CONCAT - RW
sd mydg03-03 archive-01 mydg03 0 40960 0 c1t2d0 ENA
The subdisks line (beginning sd) indicates that the volume archive is on disk
mydg03. To move the volume off mydg03, use the following command.
Note: The ! character is a special character in some shells. This example shows
how to escape it in a bash shell.
# vxassist -g mydg move archive \!mydg03 dest_disk
Here dest_disk is the destination disk to which you want to move the volume. It
is not necessary to specify a destination disk. If you do not specify a destination
disk, the volume is moved to an available disk with enough space to contain the
volume.
For example, to move a volume from disk mydg03 to disk mydg04, in the disk group,
mydg, use the following command:
# vxassist -g mydg move archive \!mydg03 mydg04
This command indicates that the volume is to be reorganized so that no part of
it remains on mydg03.
If two volumes (other than the root volume) on the same disk are busy, move them
so that each is on a different disk.
If one volume is particularly busy (especially if it has unusually large average read
or write times), stripe the volume (or split the volume into multiple pieces, with
each piece on a different disk). If done online, converting a volume to use striping
requires sufficient free space to store an extra copy of the volume. If sufficient
free space is not available, a backup copy can be made instead. To convert a volume,
create a striped plex as a mirror of the volume and then remove the old plex. For
example, the following commands stripe the volume archive across disks mydg02,
mydg03, and mydg04 in the disk group, mydg, and then remove the original plex
archive-01:
# vxassist -g mydg mirror archive layout=stripe mydg02 mydg03 \
mydg04
# vxplex -g mydg -o rm dis archive-01
After reorganizing any particularly busy volumes, check the disk statistics. If
some volumes have been reorganized, clear statistics first and then accumulate
statistics for a reasonable period of time.
Performance monitoring and tuning
Performance monitoring
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