HP Veritas Volume Manager 5.0 -UX 11i v3 Taking plexes offline, # vxmend -g diskgroup off plex

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Creating and administering plexes

Taking plexes offline

Note: You can also use the command vxassist mirror volume to add a data plex as a mirror to an existing volume.

Taking plexes offline

Once a volume has been created and placed online (ENABLED), VxVM can temporarily disconnect plexes from the volume. This is useful, for example, when the hardware on which the plex resides needs repair or when a volume has been left unstartable and a source plex for the volume revive must be chosen manually.

Resolving a disk or system failure includes taking a volume offline and attaching and detaching its plexes. The two commands used to accomplish disk failure resolution are vxmend and vxplex.

To take a plex OFFLINE so that repair or maintenance can be performed on the physical disk containing subdisks of that plex, use the following command:

#vxmend [-g diskgroup] off plex

If a disk fails (for example, it has a head crash), you can use the vxmend command to take offline all plexes that have associated subdisks on the affected disk. For example, if plexes vol01-02and vol02-02in the disk group, mydg, had subdisks on a drive to be repaired, use the following command to take these plexes offline:

#vxmend -g mydg off vol01-02 vol02-02

This command places vol01-02and vol02-02in the OFFLINE state, and they remain in that state until it is changed. The plexes are not automatically recovered on rebooting the system.