Date: Mon, 19 Apr 2004 16:51:16 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Ollie Cook <ollie@uk.clara.net> Cc: freebsd-stable@freebsd.org Subject: Re: filesystem corruption with 1TB filesystem, 4.9-STABLE, twe Message-ID: <20040419155116.GA50490@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <20040419140516.GL5039@mutare.noc.clara.net> References: <20040418211852.GA67452@mutare.noc.clara.net> <20040419140516.GL5039@mutare.noc.clara.net>
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On Mon, Apr 19, 2004 at 03:05:16PM +0100, Ollie Cook wrote:
> I have some further details which I hope might shed some more light on th=
is
> problem. Accessing some files which appear (from a directory listing for
> example) to have been stored correctly results in 'Bad file descriptor'. =
This
> is with a freshly checked and clean filesystem.
>=20
> I say 'clean', but after fsck declares it clean, another pass through fsc=
k will
> diagnose further errors. This is without mounting the filesystem between
> passes.
>=20
> I ran a few simple tests and was able to ascertain that the open(2) and r=
ead(2)
> system calls don't return errors but fstat(2) does return EBADF.
>=20
> su-2.05b# ls | grep 1071701821.78602.aether.uk.clara.net
> 1071701821.78602.aether.uk.clara.net
> su-2.05b# ls 1071701821.78602.aether.uk.clara.net
> ls: 1071701821.78602.aether.uk.clara.net: Bad file descriptor
>=20
> Any assistance in diagnosing this would be greatly appreciated.
Can you rule out hardware problems by substituting in a different
known good 3-ware card? Last time I saw anything like this was an IO
controller chip going marginal through overheating under heavy load
and flipping occasional bits on disk block addresses.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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