Stopping a Volume
Stopping a volume renders it unavailable to the user, and changes the volume kernel state from ENABLED or DETACHED to DISABLED. If the volume cannot be disabled, it remains in its current state. To stop a volume, use the following command:
# vxvol [-g diskgroup] [-f] stop volume ...
To stop all volumes in a specified disk group, use the following command:
# vxvol [-g diskgroup] [-f] stopall
 Caution
If you use the -f option to forcibly disable a volume that is currently open to an application, the volume remains open, but its contents are inaccessible. I/O operations on the volume fail, and this may cause data loss. It is not possible to deport a disk group until all of its volumes are closed.
If you need to prevent a closed volume from being opened, it is recommended that you use the vxvol maint command, as described in the following section.
Putting a Volume in Maintenance Mode
If all mirrors of a volume become STALE, you can place the volume in maintenance mode. Then you can view the plexes while the volume is DETACHED and determine which plex to use for reviving the others. To place a volume in maintenance mode, use the following command:
# vxvol [-g diskgroup] maint volume
To assist in choosing the revival source plex, use vxprint to list the stopped volume and its plexes.
To take a plex (in this example, vol01-02 in the disk group, mydg) offline, use the following command:
# vxmend -g mydg off vol01-02
The vxmend on command can change the state of an OFFLINE plex of a DISABLED volume to STALE. For example, to put a plex named vol01-02 in the STALE state, use the following command:
# vxmend -g mydg on vol01-02
Running the vxvol start command on the volume then revives the plex as described in the next section.
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