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Date: Wed, 10 Nov 2004 09:11:33 +0100
From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk>
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To: Zoltan Frombach <tssajo@hotmail.com>
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cc: freebsd-current@freebsd.org
Subject: 
 Re: 5.3-RELEASE: WARNING - WRITE_DMA interrupt timout - what does
 it	mean?
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Zoltan Frombach wrote:
> I just upgraded to 5.3-RELEASE a few days ago. This morning this line=20
> got into my system log file:
> Nov  9 06:14:03 www kernel: ad0: WARNING - WRITE_DMA interrupt was seen=
=20
> but timeout fired LBA=3D2491143
>=20
> I've never seen this message before. Can someone please explain what it=
=20
> means? With Thanks,

It means that the disk has processed the write request (interrupt seen), =

but that the system (the bio_taskqueue) hasn't been able to get the=20
result returned to the kernel.

Your disk is not involved in this problem since it has done its part,=20
but the rest of the system is either busy with something else, or there=20
are bugs lurking that prohibits the bio_taskqueue from running.

Either way its a WARNING not a FAILURE :)

--=20

-S=F8ren