From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jose Manuel dos Santos Calhariz Subject: Re: md raid6 deadlock on write Date: Fri, 6 Jul 2012 14:55:24 +0100 Message-ID: <20120706135524.GI15287@calhariz.com> References: <20120629194600.GA23859@calhariz.com> <20120702221508.GA24801@calhariz.com> <20120704113811.180be107@notabene.brown> <20120704102411.GG15287@calhariz.com> Reply-To: jose.spam@netvisao.pt Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="um2V5WpqCyd73IVb" Return-path: Content-Disposition: inline In-Reply-To: <20120704102411.GG15287@calhariz.com> Sender: linux-raid-owner@vger.kernel.org To: jose.spam@netvisao.pt Cc: NeilBrown , jose.calhariz@netvisao.pt, linux-raid@vger.kernel.org, ns-list@dsi.ist.utl.pt List-Id: linux-raid.ids --um2V5WpqCyd73IVb Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jul 04, 2012 at 11:24:11AM +0100, Jose Manuel dos Santos Calhariz w= rote: > On Wed, Jul 04, 2012 at 11:38:11AM +1000, NeilBrown wrote: > > On Mon, 2 Jul 2012 23:15:08 +0100 Jose Manuel dos Santos Calhariz > > wrote: > >=20 > > >=20 > > > We have a group of servers with a LVM over a RAID6 of 16 drives. > > > During normal work loads, sometimes, the md raid enter on deadlock for > > > writes and only a power off/power on allows to recover the machine. > >=20 > > This might be fixed by the following commit which was recently included= in > > 3.5-rc. If could test with that I'd appreciate it. >=20 > We will do it, at first opportunity. We have two machines that are running fio for 24 hours without problems. So the bug seams to be fixed, thank you. Any possibility of the fix being ported to kernel 3.2? >=20 > >=20 > > >=20 > > > - there is information from "SysRq : Show State", not attached > > > because is too big, > >=20 > > How big is too big? It is very hard to see if there is anything useful= in > > there if I cannot see it.... >=20 > Big enough to be blocked by the mailing list ;-) >=20 > I am attaching now, so you can see it. >=20 > >=20 > > NeilBrown > >=20 >=20 >=20 > Jose Calhariz >=20 Jose Calhariz --=20 -- "Existem 3 poderes soberanos: Deus no c=E9u, o Papa no Vaticano e Dad=E1 Maravilha na grande =E1rea." --Dad=E1 Maravilha --um2V5WpqCyd73IVb Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIcBAEBCAAGBQJP9u5LAAoJEDSKd41ohe+PxkcP/11cOkDXaWNjxfJ8i6TY1Pkf SLFgC/F55MNrnkaAzyO/4iKdfjHNiRdrP4mtlCsdL3oD9OGvCl1U4gpbpXMld0KR mH+UzcZiYuYdtifrD4X/QYa4Cwi9nqPns9sji3OA0hSXHTJ7+z2wb0A31y46hu6x ZLm5zPJx1wxSeZvu8CJzBucmuTM2BqZuLmCXOU4QG1+NcPKKvbk5IfO2Rnypy5gS itnkzc5WJQZnLeDDIsExEpbBOOEryVwyWdb9WoxMygiVUZ6h0a1hw+fMrzBczSLt VOpmmZ7VPgKmG9Blib3DeANfyywTo4qgkAklhuPRZRZE1HI+1AE372nO/t3saSiD gZVAmJhMIniRuA+hVNYY4hnWmlC9pFvLsFfcaG1BEHTqSFVnU8QCmHT/cI9opGiD YtS+2LEAegt36SZCfJ1dVMZXUDkU6HerjOmKxhfXzPD8x/ZhdcEzxqv/+oGurQrS 3a4JPB4aFDE632KoKwBeSWIYD3RqhK/0aOuUUPO/dWni71z7iJcVKV1mzuLXGLgi r+bnNAIUY3b5i2FIPDShgV08/iW4hAaf3z9HJ8UD2pDE9sLS1/QW+gIDoXdZVnh6 u2UqXkxv4CLcRcrbtiSY0VtZ/3pSVHDm62lDk0GH1ST8Eb5krXIE3VSv3yqMaAi/ dOv4yTjN1PVdlcqss1c2 =KgEN -----END PGP SIGNATURE----- --um2V5WpqCyd73IVb--