Hi all, I have a 6 node cluster running 5.9 Generic_122300-37 (SPARC) and with Sun Cluster 3.2. I have to remove over 600 LUNs on this cluster and am somewhat anxious in how to approach this.
The recommendations I received were the following: - remove the disks completely out of veritas (VxVM 5.0) - remove SCSI keys from the disks using /usr/cluster/sc/lib/scsi -c scrub -d /dev/dsk/... - unmap them on the storage side - perform cleanup on nodes The scrub part is where I get anxious; as far as I know, the cluster puts SCSI-3 keys on each disk which you can list with scsi -c inkeys. However, I also noticed that the majority of those disks have a reservation active (scsi -c inresv) My questions here are: - Is my understanding of inkeys (list keys) and inresv (list active reservations) correct? - what will happen if I issue scsi -c scrub on a disk which lists an active reservation (scsi -c inresv); as far as I can gather from training and reading, this might induce a node panic. - I also stumbled in my reading on this upon an option called scsi -c disfailfast; will this disactivate the probing if a node can access a disk or is this something different? - finally: is there a safer way to remove LUNs from a 2+ node cluster? I'd be most grateful if someone with experience and more expertise could shed some light on this. Gregory -- This message posted from opensolaris.org
