Hello, As many before me I need to set the SCSI ID for iSCSI interfaces under LIO. I can do this with tgt and other legacy iSCSI targets but it seems LIO doesn't have the ability to manage this? Setting the SCSI ID is important for iSCSI failover and iSCSI clustering to ensure that initatiors can continue to connect to the target across different and new hosts. Some initators will just use the iSCSI WWN / serial but many also need the SCSI ID to remain consistant such as Xen or in our case XenServer (Citrix's open source Xen product). There is a complecated way of maintaining SCSI ID consistancy with LIO which involved enabling and managed PR with APTPL but we've found that to be complex and fraught with problems when all that is require is to be able to set the SCSI ID when the target is created just the same as you do the WWN etc... If a SCSI ID changes for Xen, you have to take all servers offline, detach your storage and forget it, then discover, reattach then go adding all the orphaned disks on the storage back to their VMs which is *very* painful, see: https://support.citrix.com/article/CTX118641 Related posts: http://www.spinics.net/lists/target-devel/msg02121.html http://www.spinics.net/lists/target-devel/msg10990.html http://comments.gmane.org/gmane.linux.scsi.target.devel/2703 http://comments.gmane.org/gmane.linux.scsi.target.devel/2777 -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
