Date: Thu, 02 Mar 2006 23:39:45 -0500 From: Yarema <yds@CoolRat.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: David Rhodus <drhodus@machdep.com>, Pawel Jakub Dawidek <pjd@freebsd.org>, Dennis Koegel <amf@hobbit.neveragain.de>, FreeBSD-current@freebsd.org, Martin Machacek <m@m3a.net>, Kris Kennaway <kris@obsecurity.org>, Dmitry Pryanishnikov <dmitry@atlantis.dp.ua>, FreeBSD-gnats-submit@freebsd.org Subject: Re: kern/93942: panic: ufs_dirbad: bad dir Message-ID: <952927C621848163A912B270@ramen.coolrat.org> In-Reply-To: <20060303034932.V58513@fledge.watson.org> References: <courier.44046DC8.000006A2@CoolRat.org> <20060228195343.GA85313@xor.obsecurity.org> <3BD79FAD83E2122EC1644386@ramen.coolrat.org> <fe77c96b0603011210w439e1d11xb82e3498c1846e65@mail.gmail.com> <20060301201937.GA29208@xor.obsecurity.org> <A4A304ECE051757AD5D2E7C0@ramen.coolrat.org> <20060303034932.V58513@fledge.watson.org>
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--On March 3, 2006 3:51:45 AM +0000 Robert Watson <rwatson@FreeBSD.org> wrote: > > On Thu, 2 Mar 2006, Yarema wrote: > >> options UFS_EXTATTR >> options UFS_EXTATTR_AUTOSTART > > If you disable just UFS_EXTATTR_AUTOSTART, does the panic go away? The > autostart routine relies on reading directory data (or at least, > performing lookups) during the mount process. While it shouldn't be > running on UFS2, it could be that it is, and if something has changed in > the mount process so that reading directories that early is no longer > functional, it could be that this causes an incorrect reporting of > on-disk corruption (i.e., it could be a data structure initialization > problem or the like). > > Robert N M Watson Damn, I just reformatted the corrupt partition so I can no longer try this. But as per Dmitry's suggestion before newfs wiped it all I did a: mount -r /home cat /home > /tmp/ar0s1e.ino2 umount /home mount -r /dev/twed0s1e /home cat /home > /tmp/twed0s1e.ino2 umount /home Where ar0s1e is the corrupt slice and the dir is 17408 bytes in size and there seems to be a huge chunk of mostly null data following the entry for lost+found. twed0s1e is where I backed up the /home fs and the dir in a more reasonable 1024 bytes in size. Both files can be found at <http://yds.CoolRat.org/freebsd/>; along with an archive of my KERNCONF files containing a short README explaining how I manage my KERNCONFs. -- Yarema
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