Hi Trond, There is a problem with interrupted slots (yet again). We send an operation to the server and it gets interrupted by the a signal. We used to send a sole SEQUENCE to remove the problem of having real operation get an out of the cache reply and failing. Now we are not doing it again (since 3453d5708 NFSv4.1: Avoid false retries when RPC calls are interrupted"). So the problem is We bump the sequence on the next use of the slot, and get SEQ_MISORDERED. We decrement the number back to the interrupted operation. This gets us a reply out of the cache. We again fail with REMOTE EIO error. Going back to the commit's message. I don't see the logic that the server can't tell if this is a new call or the old one. We used to send a lone SEQUENCE as a way to protect reuse of slot by a normal operation. An interrupted slot couldn't have been another SEQUENCE. So I don't see how the server can't tell a difference between SEQUENCE and any other operations.