From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: md raid6 deadlock on write Date: Mon, 9 Jul 2012 13:46:53 +1000 Message-ID: <20120709134653.332102fd@notabene.brown> References: <20120629194600.GA23859@calhariz.com> <20120702221508.GA24801@calhariz.com> <20120704113811.180be107@notabene.brown> <20120704102411.GG15287@calhariz.com> <20120706135524.GI15287@calhariz.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/hr8yd7Be0/Y9bZz_R3x01N3"; protocol="application/pgp-signature" Return-path: In-Reply-To: <20120706135524.GI15287@calhariz.com> Sender: linux-raid-owner@vger.kernel.org To: jose.spam@netvisao.pt Cc: jose.calhariz@netvisao.pt, linux-raid@vger.kernel.org, ns-list@dsi.ist.utl.pt List-Id: linux-raid.ids --Sig_/hr8yd7Be0/Y9bZz_R3x01N3 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Fri, 6 Jul 2012 14:55:24 +0100 Jose Manuel dos Santos Calhariz wrote: > On Wed, Jul 04, 2012 at 11:24:11AM +0100, Jose Manuel dos Santos Calhariz= wrote: > > 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 includ= ed in > > > 3.5-rc. If could test with that I'd appreciate it. > >=20 > > We will do it, at first opportunity. >=20 > We have two machines that are running fio for 24 hours without > problems. So the bug seams to be fixed, thank you. Thanks for testing and reported. >=20 > Any possibility of the fix being ported to kernel 3.2? It seems that I didn't tag that patch for -stable so it won't automatically get included. I'll send it the old way - maybe it'll get into 3.2.23. Thanks, NeilBrown --Sig_/hr8yd7Be0/Y9bZz_R3x01N3 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQIVAwUBT/pULTnsnt1WYoG5AQKdwQ/+Pu1dpxovCtU3HMXyx7qyFilLFjUFTDGY NLLppOJ2I7jI/RBEIuD8wI+NfDlWItZKgXKUio4ZEPdeymaqLYlvfgmnmN1+g6qr +ii96M3ntX+p7VVhe1A/CaAqiJ2Qw1Y2WUQup0DZn5UTFa8ASiqdSBIQYTlplzzk eVOibzjJoweIq5VpwyOzVFIZBidjNXHkIH9AK+mw3FW1dHctD5d5caklFmFe6sTn Q4KCAD6n1v0BUpE88d+BIQqU7bqRgfncXL986MHwkyj2YXxECK3yzUD+ax/zi+9x XFir4hKTE+RFCQYFLtt+BWPgh5N72llnKxyN37nQijhSDE0AHVaGcT6v4fxzdcOB oFk5+Nb2KEbHEfw/qFv+yZtwzFPJsJChh+qRdfApsmO6oUDeQkyS88xyciwbiCC/ wypxwZcp1tBsNDFwGtEgLQVsB85K5PAOr4xlrMdpLpu3/b0v+1tikxPJA14IXsA1 abW196PDoqrCTNmO9QCpCKVE3KxNsySb54nyDuEJgTYrnhH+z+edOZPr2orr9qj2 bOgElrHiw0IT7o/z7TGOuipSWA79BtEeC+EXLQh66JBE0hYX1w1ZiXuvQnXJkAjv m9uWNpp1Gbh1MxuMIZxAQ5SFCX4MsaagneWGysJRGeIo5oer+ZCGpcCrcjMXZplQ DdBD9zsviF0= =KiZU -----END PGP SIGNATURE----- --Sig_/hr8yd7Be0/Y9bZz_R3x01N3--