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Date:      Sun, 24 Dec 2023 14:25:36 +0000
From:      bugzilla-noreply@freebsd.org
To:        fs@FreeBSD.org
Subject:   [Bug 275905] nfs client: mount becomes unresponsive
Message-ID:  <bug-275905-3630-O59j1uwYF0@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-275905-3630@https.bugs.freebsd.org/bugzilla/>
References:  <bug-275905-3630@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275905

--- Comment #1 from Lexi <lexi.freebsd@le-fay.org> ---
this seems to be connected to Kerberos ticket expiry: the problem recurred =
just
now when my ticket expired.  when this happens, klist shows:

% klist
Credentials cache: FILE:/tmp/krb5cc_10006
        Principal: lexi@EDEN.LE-FAY.ORG

  Issued                Expires        Principal
Dec 24 04:13:34 2023  >>>Expired<<<  krbtgt/EDEN.LE-FAY.ORG@EDEN.LE-FAY.ORG
Dec 24 06:58:04 2023  >>>Expired<<<=20
host/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 13:37:42 2023  >>>Expired<<<=20
nfs/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 13:37:42 2023  >>>Expired<<<=20
nfs/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 13:37:42 2023  >>>Expired<<<=20
nfs/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 13:37:42 2023  >>>Expired<<<=20
nfs/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
[... many identical entries elided...]
Dec 24 13:37:42 2023  >>>Expired<<<=20
nfs/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 13:37:42 2023  >>>Expired<<<=20
nfs/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 06:58:04 2023  >>>Expired<<<=20
host/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG
Dec 24 06:58:04 2023  >>>Expired<<<=20
host/hemlock.eden.le-fay.org@EDEN.LE-FAY.ORG

in additional, the 'Invalid' counter in nfsstat -cE increases to 64 (it was
previously 0):

Rpc Info:
     TimedOut      Invalid    X Replies      Retries     Requests
            0           64            0            0      4832814

however, the mount never recovers even after renewing the tickets.

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