234Creating and administering plexes

Changing plex attributes

Alternatively, you can first dissociate the plex and subdisks, and then remove them with the following commands:

#vxplex [-g diskgroup] dis plex

#vxedit [-g diskgroup] -r rm plex

When used together, these commands produce the same result as the vxplex -o rm dis command. The -roption to vxedit rm recursively removes all objects from the specified object downward. In this way, a plex and its associated subdisks can be removed by a single vxedit command.

Changing plex attributes

Caution: Change plex attributes with extreme care.

The vxedit command changes the attributes of plexes and other volume

Manager objects. To change plex attributes, use the following command:

#vxedit [-g diskgroup] set attribute=value ... plex

Plex fields that can be changed using the vxedit command include:

■name

■putiln

■tutiln

■comment

The putiln field attributes are maintained on reboot; tutiln fields are temporary and are not retained on reboot. VxVM sets the putil0 and tutil0 utility fields. Other Symantec products, such as the Veritas Enterprise Administrator (VEA), set the putil1 and tutil1 fields. The putil2 and tutil2 are available for you to use for site-specific purposes.

The following example command sets the comment field, and also sets tutil2 to indicate that the subdisk is in use:

#vxedit -g mydg set comment=”plex comment” tutil2=”u” vol01-02

To prevent a particular plex from being associated with a volume, set the putil0 field to a non-null string, as shown in the following command:

#vxedit -g mydg set putil0=”DO-NOT-USE” vol01-02

See the vxedit(1M) manual page for more information about using the vxedit command to change the attribute fields of VxVM objects.