Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

172 Creating and administering disk groups
Handling disks with duplicated identifiers
Importing cloned disks with tags
In this example, cloned disks (BCV devices) from an EMC Symmetrix DMX array are to
be imported. The primary (non-cloned) disks, mydg01, mydg03 and mydg03, are
already imported, and the cloned disks with the tag t1 are to be imported.
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
EMC0_4 auto:cdsdisk mydg01 mydg online
EMC0_6 auto:cdsdisk mydg02 mydg online
EMC0_8 auto:cdsdisk - (mydg) online udid_mismatch
EMC0_15 auto:cdsdisk - (mydg) online udid_mismatch
EMC0_18 auto:cdsdisk mydg03 mydg online
EMC0_24 auto:cdsdisk - (mydg) online udid_mismatch
The disks are tagged as follows:
# vxdisk listtag
DEVICE NAME VALUE
EMC0_4 t2 v2
EMC0_4 t1 v1
EMC0_6 t2 v2
EMC0_8 t1 v1
EMC0_15 t2 v2
EMC0_18 t1 v1
EMC0_24 t1 v1
EMC0_24 t2 v2
To import the cloned disks that are tagged as t1, they must be assigned a new disk group
name, and their UDIDs must be updated:
# vxdg -n newdg -o useclonedev=on -o tag=t1 -o updateid import mydg
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
EMC0_4 auto:cdsdisk mydg01 mydg online
EMC0_6 auto:cdsdisk mydg02 mydg online
EMC0_8 auto:cdsdisk mydg03 newdg online clone_disk
EMC0_15 auto:cdsdisk - (mydg) online udid_mismatch
EMC0_18 auto:cdsdisk mydg03 mydg online
EMC0_24 auto:cdsdisk mydg01 newdg online clone_disk
As the cloned disk EMC0_15 is not tagged as t1, it is not imported. Note that the state of
the imported cloned disks has changed from online udid_mismatch to online
clone_disk.
By default, the state of imported cloned disks is shown as online clone_disk. This
can be removed by using the
vxdisk set command as shown here:
# vxdisk set EMC0_8 clone=off
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
EMC0_4 auto:cdsdisk mydg01 mydg online
EMC0_6 auto:cdsdisk mydg02 mydg online
EMC0_8 auto:cdsdisk mydg03 newdg online
EMC0_15 auto:cdsdisk - (mydg) online udid_mismatch
EMC0_18 auto:cdsdisk mydg03 mydg online
EMC0_24 auto:cdsdisk mydg01 newdg online clone_disk