Veritas Volume Manager 5.0 Administrator's Guide (September 2006)
171Creating and administering disk groups
Handling disks with duplicated identifiers
Importing cloned disks without tags
In this example, cloned disks (shadow image devices) from an Hitachi TagmaStore array
are to be imported. The primary (non-cloned) disks, mydg01, mydg03 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
TagmaStore-USP0_30 auto:cdsdisk - (mydg) online udid_mismatch
TagmaStore-USP0_31 auto:cdsdisk - (mydg) online udid_mismatch
TagmaStore-USP0_32 auto:cdsdisk mydg01 mydg online
To import the cloned disks, they must be assigned a new disk group name, and their
UDIDs must be updated:
# vxdg -n newdg -o useclonedev=on -o updateid import mydg
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
TagmaStore-USP0_3 auto:cdsdisk mydg03 newdg online clone_disk
TagmaStore-USP0_23 auto:cdsdisk mydg02 mydg online
TagmaStore-USP0_25 auto:cdsdisk mydg03 mydg online
TagmaStore-USP0_30 auto:cdsdisk mydg02 newdg online clone_disk
TagmaStore-USP0_31 auto:cdsdisk mydg01 newdg online clone_disk
TagmaStore-USP0_32 auto:cdsdisk mydg01 mydg online
Note that the state of the imported cloned disks has changed from online
udid_mismatch to online clone_disk.
In the next example, none of the disks (neither cloned nor non-cloned) have been
imported:
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
TagmaStore-USP0_3 auto:cdsdisk - (mydg) online udid_mismatch
TagmaStore-USP0_23 auto:cdsdisk - (mydg) online
TagmaStore-USP0_25 auto:cdsdisk - (mydg) online
TagmaStore-USP0_30 auto:cdsdisk - (mydg) online udid_mismatch
TagmaStore-USP0_31 auto:cdsdisk - (mydg) online udid_mismatch
TagmaStore-USP0_32 auto:cdsdisk - (mydg) online
To import only the cloned disks into the mydg disk group:
# vxdg -o useclonedev=on -o updateid import mydg
# vxdisk -o alldgs list
DEVICE TYPE DISK GROUP STATUS
TagmaStore-USP0_3 auto:cdsdisk mydg03 mydg online clone_disk
TagmaStore-USP0_23 auto:cdsdisk - (mydg) online
TagmaStore-USP0_25 auto:cdsdisk - (mydg) online
TagmaStore-USP0_30 auto:cdsdisk mydg02 mydg online clone_disk
TagmaStore-USP0_31 auto:cdsdisk mydg01 mydg online clone_disk
TagmaStore-USP0_32 auto:cdsdisk - (mydg) online