VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Reserving Disks
82 VERITAS Volume Manager Administrator’s Guide
To confirm that the name change took place, use the following command:
# vxdisk list
VxVM returns the following display:
DEVICE TYPE DISK GROUP STATUS
c0t0d0 simple disk04 rootdg online
c1t0d0 simple disk03 rootdg online
c1t1d0 simple - - online
Note By default, VxVM names subdisk objects after the VM disk on which they are
located. Renaming a VM disk does not automatically rename the subdisks on that
disk.
Reserving Disks
Bydefault, thevxassist command allocates spacefromanydisk that has freespace. You
can reserve a set of disks for special purposes, such as to avoid general use of a
particularly slow or a particularly fast disk.
To reserve a disk for special purposes, use the following command:
# vxedit set reserve=on diskname
After you enter this command, the vxassist program does not allocate space from the
selected disk unless that disk is specifically mentioned on the vxassist command line.
For example, if disk03 is reserved, use the following command:
# vxassist make vol03 20m disk03
The vxassist command overrides the reservation and creates a 20 megabyte volume on
disk03. However, the command:
# vxassist make vol04 20m
does not use disk03, even if there is no free space on any other disk.
To turn off reservation of a disk, use the following command:
# vxedit set reserve=off diskname
See Special Attribute Values for Disk Media in vxedit(1M) for more information.