From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Evans Subject: Re: Update: mdadm 3.1.1 / 2.6.32 - trouble reducing active devices in 13TB RAID6 Date: Mon, 5 Apr 2010 17:07:28 -0700 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Brett King Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Mon, Apr 5, 2010 at 4:10 PM, Brett King wrote: > Another update: things didn't quite go as planned .. the reshape > didn't quite finish - it got to 99.9% and stopped there: > > md0 : active raid6 sdq[0] sdc[12] sdb[11] sda[10] sdo[9] sdn[8] sdm[7= ] > sdl[6] sdv[5] sdu[4] sdd[3] sds[2] sdr[1] > =A0 =A0 =A09767624960 blocks super 0.91 level 6, 64k chunk, algorithm= 2 > [12/12] [UUUUUUUUUUUU] > =A0 =A0 =A0[=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= >.] =A0reshape =3D 99.9% (976761856/976762496) > finish=3D0.0min speed=3D4K/sec > > I left it overnight hence the low speed average. A stop and restart > using the backup-file also didn't end well: > > array:/tmp/mdadm-3.1.2 # ./mdadm -S /dev/md0 > mdadm: stopped /dev/md0 > array:/tmp/mdadm-3.1.2 # ./mdadm -A /dev/md0 --backup-file /export/md= 0-backup > mdadm: Failed to restore critical section for reshape, sorry. > > (the backup-file isn't on the array being reshaped). > > Looks like the code's almost there but not quite .. there are 640 > remaining blocks. > > array:/tmp/mdadm-3.1.2 # uname -a > Linux array 2.6.34-rc3-7-default #1 SMP 2010-03-31 17:12:53 +0200 > x86_64 x86_64 x86_64 GNU/Linux > array:/tmp/mdadm-3.1.2 # ./mdadm -V > mdadm - v3.1.2 - 10th March 2010 > array:/tmp/mdadm-3.1.2 # > > Any ideas ? > > Cheers, > Brett. > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html > Anything useful/interesting in the dmesg output? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html