Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

The following command ensures that configuration database copies and kernel
log copies are maintained for all disks in the disk group mydg that are tagged as
t1:
# vxdg -g mydg set tagmeta=on tag=t1 nconfig=all nlog=all
The disks for which such metadata is maintained can be seen by using this
command:
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
TagmaStore-USP0_10 auto:cdsdisk - - online
TagmaStore-USP0_24 auto:cdsdisk mydg02 mydg online
TagmaStore-USP0_25 auto:cdsdisk mydg03 mydg online tagmeta
TagmaStore-USP0_26 auto:cdsdisk - - online
TagmaStore-USP0_27 auto:cdsdisk - - online
TagmaStore-USP0_28 auto:cdsdisk mydg01 mydg online tagmeta
Alternatively, the following command can be used to ensure that a copy of the
metadata is kept with a disk:
# vxdisk set TagmaStore-USP0_25 keepmeta=always
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
TagmaStore-USP0_10 auto:cdsdisk - - online
TagmaStore-USP0_22 auto:cdsdisk - - online
TagmaStore-USP0_23 auto:cdsdisk - - online
TagmaStore-USP0_24 auto:cdsdisk mydg02 mydg online
TagmaStore-USP0_25 auto:cdsdisk mydg03 mydg online keepmeta
TagmaStore-USP0_28 auto:cdsdisk mydg01 mydg online
Importing cloned disks without tags
In the first example, cloned disks (ShadowImage™ devices) from an Hitachi
TagmaStore array will be imported. The primary (non-cloned) disks, mydg01,
mydg02 and mydg03, are already imported, and the cloned disks are not tagged.
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
TagmaStore-USP0_3 auto:cdsdisk - (mydg) online udid_mismatch
TagmaStore-USP0_23 auto:cdsdisk mydg02 mydg online
TagmaStore-USP0_25 auto:cdsdisk mydg03 mydg online
209Creating and administering disk groups
Handling cloned disks with duplicated identifiers