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Date:      Tue, 17 Apr 2007 11:56:31 +0200
From:      Pawel Jakub Dawidek <pjd@FreeBSD.org>
To:        Hidetoshi Shimokawa <simokawa@FreeBSD.ORG>
Cc:        Johan Hendriks <Johan@double-l.nl>, "Andrey V. Elsukov" <bu7cher@yandex.ru>, freebsd-current@freebsd.org
Subject:   Re: ls -al .zfs/snapshots dir reboots machine
Message-ID:  <20070417095631.GB4875@garage.freebsd.pl>
In-Reply-To: <626eb4530704161851u74ba452am73bd8891b7b59e7f@mail.gmail.com>
References:  <57200BF94E69E54880C9BB1AF714BBCBB521@w2003s01.double-l.local> <20070416094918.GC1068@garage.freebsd.pl> <46234D8E.8020501@yandex.ru> <20070416102623.GF1068@garage.freebsd.pl> <626eb4530704161851u74ba452am73bd8891b7b59e7f@mail.gmail.com>

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On Tue, Apr 17, 2007 at 10:51:37AM +0900, Hidetoshi Shimokawa wrote:
> I can repoduce this hang.
>=20
> # cd /pool/test/.zfs/snapshot
> # /bin/ls
> snap
> # /bin/ls -F
> ls: snap: No such file or directory
> # /bin/ls -F
> (hangs)

Are you able to break into debugger? I was able to reproduce it once
(but with panic in crdup()), but I can no longer do it...

> It looks like another name cache problem for me.
> I noticed 'cache_purge(vp)' is commented out in domount() in opensolaris_=
vfs.c.
> Shouldn't we need 'dnlc_purge_vp(vp)' here?

There is dnlc_purge_vfsp() at the begining of zfs_umount(), which should
be sufficient.

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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