178Creating and administering disk groups

Handling disks with duplicated identifiers

To check which disks in a disk group contain copies of this configuration information, use the vxdg listmeta command:

#vxdg [-q] listmeta diskgroup

The -qoption can be specified to suppress detailed configuration information from being displayed.

The tagged disks in the disk group may be imported by specifying the tag to the vxdg import command in addition to the -o useclonedev=on option:

#vxdg -o useclonedev=on -o tag=my_tagged_disks import mydg

If you have already imported the non-cloned disks in a disk group, you can use the -nand -toption to specify a temporary name for the disk group containing the cloned disks:

#vxdg -t -n clonedg -o useclonedev=on -o tag=my_tagged_disks \ import mydg

See “Renaming a disk group” on page 183 for more information.

To remove a tag from a disk, use the vxdisk rmtag command, as shown in the following example:

#vxdisk rmtag tag=my_tagged_disks c2t67d0

For further information about the use of the vxdisk and vxdg commands to tag disks, and handle duplicate UDIDs, see the vxdisk(1M) and vxdg(1M) manual pages.

Sample cases of operations on cloned disks

The following sections contain examples of operations that can be used with cloned disks:

■Enabling configuration database copies on tagged disks

■Importing cloned disks without tags

■Importing cloned disks with tags

Enabling configuration database copies on tagged disks

In this example, the following commands have been used to tag some of the disks in an Hitachi TagmaStore array:

#vxdisk settag TagmaStore-USP0_28 t1=v1

#vxdisk settag TagmaStore-USP0_28 t2=v2

#vxdisk settag TagmaStore-USP0_24 t2=v2

#vxdisk settag TagmaStore-USP0_25 t1=v1