From: "Mkrtchyan, Tigran" <tigran.mkrtchyan@desy.de>
To: linux-nfs <linux-nfs@vger.kernel.org>
Subject: readdir and old cookie verifier
Date: Tue, 8 Sep 2015 15:08:32 +0200 (CEST) [thread overview]
Message-ID: <267164181.6444770.1441717712553.JavaMail.zimbra@desy.de> (raw)
Dear NFS gurus,
we run into situation, where client gets BAD_COOKIE on a readdir.
Before I go and try to adopt our server to handle it, let me describe
the situation.
A client node (we have seen it with RHEL6 and Ubuntu 12.04, but probably
others affected as well) send a bunch of readdirs to the server. After some
time (this many be hours, days ) client sends an other set of readdirs. But
it reuses cookie verifier from the first readdir sequence. Server sends back
BAD_COOKIE, but client never starts over with a cookie and verifier being zero.
As a result, inconsistent listing and anhappy user:
[exflserv04] ~ $ ls /pnfs/desy.de/exfel/disk/LCLS/2015/RAW/XCS/xcsh8215/xtc/
ls: reading directory /pnfs/desy.de/exfel/disk/LCLS/2015/RAW/XCS/xcsh8215/xtc/: Unknown error 523
Is this behavior of the client correct?
Thanks a lot,
Tigran.
next reply other threads:[~2015-09-08 13:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-08 13:08 Mkrtchyan, Tigran [this message]
2015-09-09 19:03 ` readdir and old cookie verifier J. Bruce Fields
2015-09-09 20:10 ` Mkrtchyan, Tigran
2015-09-09 20:59 ` J. Bruce Fields
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