Date: Mon, 2 Jan 2006 13:31:49 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: Tor.Egge@cvsup.no.freebsd.org Cc: gcr+freebsd-stable@tharned.org, freebsd-stable@FreeBSD.org, kris@obsecurity.org Subject: Re: Recurring problem: processes block accessing UFS file system Message-ID: <200601022131.k02LVnLI005261@gw.catspoiler.org> In-Reply-To: <20051126.000406.74717773.Tor.Egge@cvsup.no.freebsd.org>
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On 26 Nov, Tor Egge wrote: > >> Thanks Kris, these are exactly the clues I needed. Since the deadlock >> during a snapshot is fairly easy to reproduce, I did so and collected this >> information below. "alltrace" didn't work as I expected (didn't produce a >> trace), so I traced each pid associated with a locked vnode separately. > > The vnode syncing loop in ffs_sync() has some problems: There is also a MNT_VNODE_FOREACH() loop in ffs_snapshot().
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