VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Creating and Administering Subdisks
Dissociating Subdisks from Plexes
Chapter 5 187
Dissociating Subdisks from Plexes
To break an established connection between a subdisk and the plex to
which it belongs, the subdisk is dissociated from the plex. A subdisk is
dissociated when the subdisk is removed or used in another plex. To
dissociate a subdisk, use the following command:
# vxsd dis subdisk
For example, to dissociate a subdisk named disk02-01 from the plex with
which it is currently associated, use the following command:
# vxsd dis disk02-01
You can additionally remove the dissociated subdisks from VxVM control
using the following form of the command:
# vxsd -o rm dis subdisk
CAUTION If the subdisk maps a portion of a volume’s address space, dissociating it
places the volume in DEGRADED mode. In this case, the dis operation
prints a warning and must be forced using the -o force option to succeed.
Also, if removing the subdisk makes the volume unusable, because
another subdisk in the same stripe is unusable or missing and the
volume is not DISABLED and empty, the operation is not allowed.