Date: Mon, 21 Jan 2013 15:44:50 +0100 From: Fabian Keil <freebsd-listen@fabiankeil.de> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-fs <freebsd-fs@FreeBSD.org>, freebsd-current@FreeBSD.org, freebsd-geom@FreeBSD.org Subject: Re: disk "flipped" - a known problem? Message-ID: <20130121154450.60f457d1@fabiankeil.de> In-Reply-To: <50FC3EBF.6070803@FreeBSD.org> References: <50FC3EBF.6070803@FreeBSD.org>
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--Sig_/t7ntFaXohqG3FgxzzyKTQc7 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Andriy Gapon <avg@FreeBSD.org> wrote: > Today something unusual happened on one of my machines: > kernel: (ada0:ahcich0:0:0:0): lost device > kernel: (aprobe1:ahcich0:0:15:0): NOP. ACB: 00 00 00 00 00 00 00 00 00 00= 00 00 > kernel: (aprobe1:ahcich0:0:15:0): CAM status: Command timeout > kernel: (aprobe1:ahcich0:0:15:0): Error 5, Retries exhausted > kernel: (aprobe1:ahcich0:0:15:0): NOP. ACB: 00 00 00 00 00 00 00 00 00 00= 00 00 > kernel: (aprobe1:ahcich0:0:15:0): CAM status: Command timeout > kernel: (aprobe1:ahcich0:0:15:0): Error 5, Retries exhausted > kernel: cam_periph_alloc: attempt to re-allocate valid device ada0 reject= ed > flags 0x18 refcount 1 > kernel: adaasync: Unable to attach to new device due to status 0x6 I believe I saw something similar when trying to forcefully end the cam lockups reported in: http://lists.freebsd.org/pipermail/freebsd-current/2012-October/037413.html Detaching the disc drive caused /dev/cd0 to disappear as expected, but reinserting the drive didn't bring cd0 back. > It looks like the disk disappeared from the bus and then re-appeared on t= he bus, > but not to the OS. >=20 > One of the partitions that the disk hosted was a swap partition and it se= ems to > be the cause of some of the following consequences. >=20 > The consequences: [...] > * geom_event thread started consuming 100% of CPU in g_wither_washer() This sounds familiar as well: http://www.freebsd.org/cgi/query-pr.cgi?pr=3D171865 Fabian --Sig_/t7ntFaXohqG3FgxzzyKTQc7 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlD9VGUACgkQBYqIVf93VJ0RpQCfUBrj2QYbgBfT710Iy1tTmGWO bUYAmwQoYLnfhRfr2pCN7o5FrQz9agGz =Ex10 -----END PGP SIGNATURE----- --Sig_/t7ntFaXohqG3FgxzzyKTQc7--
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