Lars Marowsky-Bree wrote:
Why send a pg_init request at this point if there are no queued ios? This was in fact my solution, to only send a pg_init io if there are queued ios.
Are there management situations where some admin wants to manually switch. If he was going to take a controller temporarily offline for maitnenance for example? Will multipath tools and dm-mutlipath be used to do this type of management, or will it be some vendor specific tool that sends a SG_IO directly?
It would not be possible to just have dm-multipath increment some refcount like pending so you cannot destroy things while a pg_init IO is in flight would it?
