Date: Mon, 9 Jan 2012 18:30:51 +0100 From: Yamagi Burmeister <lists@yamagi.org> To: jeff@freebsd.org, mckusick@freebsd.org Cc: freebsd-current@freebsd.org, bryce@bryce.net Subject: Re: FS hang when creating snapshots on a UFS SU+J setup Message-ID: <20120109183051.1e4de3ca.lists@yamagi.org> In-Reply-To: <CAO_ZHU9%2Bj2V77zGyTUhSGYfzcde1ZjYB9uLpg-UHJkw0F_PTXg@mail.gmail.com> References: <CAO_ZHU8Au50SRkf3MgieAhh%2BQFBPiVaZsgHWiwfKjUVEpNuX3Q@mail.gmail.com> <CAO_ZHU9%2Bj2V77zGyTUhSGYfzcde1ZjYB9uLpg-UHJkw0F_PTXg@mail.gmail.com>
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--Signature=_Mon__9_Jan_2012_18_30_51_+0100_P_ADyVBunBgl5FkD Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello, I'm sorry to bother you, but you may not be aware of this thread and this problem. We are several people experiencing deadlocks, kernel=20 panics and other problems when creating sanpshots on file systems with SU+J. It would be nice to get some feedback, e.g. how can we help debugging and / or fixing this problem. Thank you, Yamagi On Mon, 2 Jan 2012 23:27:57 -0600 Bryce Edwards <bryce@bryce.net> wrote: > I have a RELENG_9 machine that hangs when a snapshot is created on the > root fs (UFS, with SU+J). =A0More accurately, all the processes show a > state of "suspfs" (with ^T) and no fs activity is completed from then > on. =A0A hard reboot (power cycle) was the only way to proceed. >=20 > Here's some reference info - let me know what else I should provide. >=20 > $uname -a > FreeBSD xxx.xxx.net 9.0-PRERELEASE FreeBSD 9.0-PRERELEASE #0: Sun Dec > 25 05:04:37 UTC 2011 =A0 =A0 root@xxx.xxx.net:/usr/obj/usr/src/sys/GENERIC > amd64 >=20 > csup was run just before build[world|kernel] so you have reference on > the version information. >=20 > $mount > /dev/gpt/root on / (ufs, local, journaled soft-updates) > devfs on /dev (devfs, local, multilabel) > linprocfs on /compat/linux/proc (linprocfs, local) > { zfs info removed } >=20 > $df -h > Filesystem =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0Size =A0 =A0Used =A0 Avail = Capacity =A0Mounted on > /dev/gpt/root =A0 =A0 =A0 =A0 =A0 =A0 =A0 454G =A0 =A09.1G =A0 =A0409G = =A0 =A0 2% =A0 =A0/ > devfs =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 1.0k =A0 =A01.0k =A0 = =A0 =A00B =A0 100% =A0 =A0/dev > linprocfs =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 4.0k =A0 =A04.0k =A0 =A0 = =A00B =A0 100% =A0 =A0/compat/linux/proc > { zfs info removed } >=20 > After the hard reset, there was a snapshot file listed in /.snap and > it was ~465 GB, iirc. =A0Unfortunately, I needed to get things going > again so I was not able to debug or diagnose further. =A0I may be able > to schedule a time that I could recreate the issue and diagnose > better, but I wanted to get your input on what data points and/or > command you would be interested in. >=20 > Thanks in advance, >=20 > Bryce > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >=20 --=20 Homepage: www.yamagi.org XMPP: yamagi@yamagi.org GnuPG/GPG: 0xEFBCCBCB --Signature=_Mon__9_Jan_2012_18_30_51_+0100_P_ADyVBunBgl5FkD Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk8LJFQACgkQWTjlg++8y8vf6QCdFDmp5K8h0Mnmd/RnRhE7MbqA XskAoMCl3I6pko+Ya5+HbMMzkTf5GEy8 =c5yM -----END PGP SIGNATURE----- --Signature=_Mon__9_Jan_2012_18_30_51_+0100_P_ADyVBunBgl5FkD--
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