From mboxrd@z Thu Jan 1 00:00:00 1970 From: Scott Baker Subject: Readding a drive fails because of wrong size? Date: Thu, 25 Jun 2009 11:58:15 -0700 Message-ID: <4A43C8C7.7000209@canbytel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids I have a four disk RAID5 array, and one of the HDs got removed from the array. All four drives are identical in size and partitioning. -------------------------------------------------------------------------- Disk /dev/sdc: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdc1 1 60801 488384032 fd Linux raid autodetect Disk /dev/sdd: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 60801 488384032 fd Linux raid autodetect Disk /dev/sde: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sde1 1 60801 488384032 fd Linux raid autodetect Disk /dev/sdf: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdf1 1 60801 488384032 fd Linux raid autodetect -------------------------------------------------------------------------- /dev/sde1 needs to get added back into the array, the other three drives are fine. -------------------------------------------------------------------------- /dev/md8: Version : 00.90.03 Creation Time : Fri Oct 26 16:00:51 2007 Raid Level : raid5 Array Size : 1465151808 (1397.28 GiB 1500.32 GB) Used Dev Size : 488383936 (465.76 GiB 500.11 GB) Raid Devices : 4 Total Devices : 3 Preferred Minor : 8 Persistence : Superblock is persistent Update Time : Thu Jun 25 11:27:31 2009 State : clean, degraded Active Devices : 3 Working Devices : 3 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 64K UUID : 44c3189a:58ffab82:c2c79482:d044a0fb Events : 0.218148 Number Major Minor RaidDevice State 0 8 33 0 active sync /dev/sdc1 1 8 49 1 active sync /dev/sdd1 2 0 0 2 removed 3 8 81 3 active sync /dev/sdf1 -------------------------------------------------------------------------- But when I try and add it to the array it gives me a array that the partition isn't big enough? Nothing has changed, I haven't formatted or anything. All I did was replace a SATA cable and now I can't add that drive back to the array? This server is running CentOS 5.3 with all the updates. -------------------------------------------------------------------------- :./mdadm /dev/md8 --add /dev/sde1 mdadm: /dev/sde1 not large enough to join array root@white(/tmp/mdadm-2.6.9) :mdadm --version mdadm - v2.6.4 - 19th October 2007 -------------------------------------------------------------------------- HELP!