From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: tracking parity mismatches to a failing disk Date: Mon, 4 Jun 2012 14:17:04 +1000 Message-ID: <20120604141704.12dcbd3e@notabene.brown> References: <4FAAC278.6080303@duke.edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/WQwYtvYU3rrevWYl2aJTOYq"; protocol="application/pgp-signature" Return-path: In-Reply-To: <4FAAC278.6080303@duke.edu> Sender: linux-raid-owner@vger.kernel.org To: Michael Peterson Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/WQwYtvYU3rrevWYl2aJTOYq Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 09 May 2012 15:16:08 -0400 Michael Peterson wrote: > I'm trying to identify the source of a non-zero mismatch_cnt on a > six-disk RAID6 md array. I think I've identified it as /dev/sdf since > that is the only device with a non-zero value in > /sys/block/md0/md/dev-sd*/errors. Is that the right way to track parity > mismatches back to a disk? >=20 > OS is CentOS 5.8 -> mdadm 2.6.9 There is a program in the mdadm source distro called "raid6check" which can possibly help you. NeilBrown --Sig_/WQwYtvYU3rrevWYl2aJTOYq Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQIVAwUBT8w2wDnsnt1WYoG5AQLRaRAAk7xWp7GumY5sCzmRMqsYUrjVEwGVG7Kq JG6OW28EFrXf5fkLC0aePbRjxUjRx0PqZipe2VAYnCVZGijgT/CPr0MgG2WpQr4C oLzcOu7/A0SoDMez2lXmo7lgpIDQu8JtLPzYgHw6X+tq8ooU/f9FVtgaHu3g7uHr I8FVid2XoAZBSbqgdjR+mT6lLd7AKtsSzTDnxarXdcLd0Wor2HgMsv1s/8mUsmJz 29bnQpjttXS+mEERYQ7L6XcDfDvcIZ0LDPst26yMCtH3fa3yfX7T1p1q1Lxw5bYp Z5pC+MaZXn/w3+Ibbg9Y2QbzdwGYHtt/NG22eJOKUHm4GgVNp61uKEMQxsPnsN8W ivfOBJcbKTqES2t22uljt6pg6vdCKN6aOpMCcCWvjKOy5kZuU+wOs/k/P9QQ9hkx 1camdbHjD+6HWouXx2p8zS7V1lze3Y14S1pRg7vf4lBFvo8NnfHRS8e2OWVyd6HZ gSdLYcp059G3XvuR5hTI8pUV+QiGodC/bjzW7tAK4KUrY0AQQPGQhSphBfxpwz7x 1szTmljhc2nQPOLpWmnIRQ1ICPVs1MJP4sdesMml5mb+btH4yEtrpyuVFVu9YiaL zHn/vwGYoP1JLGps9VQk/ju6i1O71yPTZfymGgBG5zdadyI77bdm0RIvlJ+Sd3L+ tuiEKtlO2Yc= =pwKp -----END PGP SIGNATURE----- --Sig_/WQwYtvYU3rrevWYl2aJTOYq--