Date: Wed, 12 Nov 2008 18:22:35 +0000 From: Tim Bishop <tim-lists@bishnet.net> To: David Peall <david@esn.org.za> Cc: Tim Bishop <tim@bishnet.net>, freebsd-stable@freebsd.org Subject: Re: System deadlock when using mksnap_ffs Message-ID: <20081112182234.GE26195@carrick.bishnet.net> In-Reply-To: <FFF7941F7B184445881228ABAD4494B35A70AF@intsika.ct.esn.org.za> References: <20081112175826.GD26195@carrick.bishnet.net> <FFF7941F7B184445881228ABAD4494B35A70AF@intsika.ct.esn.org.za>
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On Wed, Nov 12, 2008 at 08:10:50PM +0200, David Peall wrote: > > FreeBSD paladin 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #8: Mon Nov 10 > > 20:49:51 GMT 2008 tdb@paladin:/usr/obj/usr/src/sys/PALADIN amd64 > > > > I run the mksnap_ffs command to take the snapshot and some time later > > the system completely freezes up: > > If the file system is UFS2 it's a known problem but should have been > fixed. > http://wiki.freebsd.org/JeremyChadwick/Commonly_reported_issues > > ident /boot/kernel/kernel | grep subr_sleepqueue > > version should be greater than 1.39.2.3? Yes it's UFS2, and yes it's greater than 1.39.2.3: $FreeBSD: src/sys/kern/subr_sleepqueue.c,v 1.39.2.5 2008/09/16 20:01:57 jhb Exp $ Are you sure the problem referenced on that page is the same? It talks about "dog slow" snapshotting, which I see on other filesystems and machines. But in this particular case the system is dead, and does not recover. Tim. -- Tim Bishop http://www.bishnet.net/tim/ PGP Key: 0x5AE7D984
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