> On 15 Apr 2021, at 22:47, Rick Macklem <rmack...@uoguelph.ca> wrote: > > Allan Jude wrote: >> On 4/15/2021 9:22 AM, Chris Roose wrote: >>> I posted this in -questions and someone suggested I post here as well. >>> >>> I'm having NFS availability issues between my Proxmox client and FreeBSD >>> server (10G link) since upgrading to 13->RELEASE. And unfortunately I >>> upgraded my ZFS pool to v2.0.0 before I noticed the issue, so I'm kind of >>> stuck. >>> >>> Periodically, the NFS server (I've tried both v3 and v4.2 clients) will go >>> unresponsive for several minutes. I never had >this problem on 12.2, and as >>> far as I can tell it's not a disk or network I/O issue. I'll get several >>> "nfs: server not >responding, still trying" messages on the client and a >>> few minutes later it usually recovers. It's not clear to me yet >what's >>> causing the block. Restarting nfsd on the server will resolve the issue if >>> it doesn't clear itself. >> > otis@ has run into a problem that sounds similar. > He sees a growing Recv-Q size on the server for the TCP connection from the > client > when "netstat -a" is done on the server when the "hang" occurs. > In his case, he is using a Linux client and it does not recover, however > other client > mounts continue to function.
Correct. > I suspect the recovery after a few minutes is the client establishing a new > TCP > connection. > > He has been running for almost a week with r367492 reverted and has not > reported > seeing the problem again (he had reported that it has taken up to a week to > recur, so > reverting r367492 *might* have fixed the problem and I'd guess we'll know in > another > week?). We are now running 4 days without interruption. Before r367492 was reverted, it was unpredictable when it will lock up. The best result we achieved was 7 days. The machine it’s running on is definitely a slow or weak one (it’s dell r740xd with 2x CPU, 256GB RAM, 22xNVMe data zpool). otis _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
