On Thu, May 31, 2018 at 04:51:49PM +0000, Shawn Lu (shawlu) wrote: > >On 5/31/18, 8:18 AM, "bfields@xxxxxxxxxxxx" <bfields@xxxxxxxxxxxx> wrote: > > > One case is involved with cross mounted nfs from different host. > > > Note: in theory I think there are some deadlocks possible if client and > > server mount each other. (Each host could be waiting on the other one > > to process writes before it can free memory that it needs to make > > progress.) > > Yes. I hope aggressive umount will help by setting a very short grace period and timeout before umount. No, the deadlock isn't an unmounting problem, it's a problem that could happen during normal operation. I don't know if it's easy to reproduce. You'd probably need one or both hosts to be writing to NFS very quickly. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
