[Bug 266236] ZFS NFS : .zfs/snapshot : Stale file handle

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 06 Oct 2022 14:05:04 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266236

--- Comment #10 from Michel Le Cocq <nomad@neuronfarm.net> ---
How can I help for this bug ?

In fact I've two FreeBSD server with several disk bay.

Server1 : 13.0-RELEASE-p7
Server2 : 13.1-RELEASE-p2

My disk bay are attach on booth.

Then I can choose to import the pool on Server1 or Server2.

The point is that on Server1 with 13.0-RELEASE-p7 no snapshot access trouble
but really often NFS client hang like this  :

Oct  6 15:15:57 xxx kernel: [275827.527427] nfs: server Server1 not responding,
still trying
...
Oct  6 15:18:58 xxx kernel: [276007.920813] nfs: server Server1 OK

Since upgrade on 13.1-RELEASE-p2 on Server2, I have 'Stale NFS file handle' on
NFS client.

        root@poste:~# ls -l /mnt/.zfs/snapshot/1/
        total 0
        ls: /mnt/.zfs/snapshot/1/: Stale NFS file handle

And worse on this release ... an action on zfs vol result in : 'process in
Uninterruptible sleep', then I must reboot...

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