The concept of mirror ownership is unique to multi-owner disk sets. Unlike a RAID-1 volume in a Solaris Volume Manager shared disk set, a RAID-1 volume in a multi-owner disk set usually has an owner associated with it. The ownership of the mirror volume is chosen by the volume manager. The owner of the volume is one of the nodes designated in the node list for the disk set. Only the owner of the RAID-1 volume can write to the volume. If a non-owner node wants to write to the volume, the ownership switches to the node doing the write operation. The following output from the metastat -s diskset-name command shows nodeone as the owner of the RAID-1 volume, d24.
# metastat -s red red/d24: Mirror Submirror 0: red/d20 State: Okay Submirror 1: red/d21 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Resync option: optimizedresync Owner: nodeone Size: 825930 blocks (403 MB)