Mike,
I understand and appreciate your position but I still don't think the arguments for enabling DM multipath are sufficiently compelling. The whole point of ANA is for things to be plug and play without any admin intervention whatsoever. I also think we're getting ahead of ourselves a bit. The assumption seems to be that NVMe ANA devices are going to be broken--or that they will require the same amount of tweaking as SCSI devices--and therefore DM multipath support is inevitable. However, I'm not sure that will be the case. > Thing is you really don't get to dictate that to the industry. Sorry. We are in the fortunate position of being able to influence how the spec is written. It's a great opportunity to fix the mistakes of the past in SCSI. And to encourage the industry to ship products that don't need the current level of manual configuration and complex management. So I am in favor of Johannes' patches *if* we get to the point where a Plan B is needed. But I am not entirely convinced that's the case just yet. Let's see some more ANA devices first. And once we do, we are also in a position where we can put some pressure on the vendors to either amend the specification or fix their implementations to work with ANA. -- Martin K. Petersen Oracle Linux Engineering
