Hi guys, After a reboot mdadm detects a much too small size for a raid5 array. The array is part of a lvm volume group, which fails because the device mapper notices that the physical volume is too small for the volume group. At the moment I can't access any data. What I did: Array consisted of 3x 1.5TB disks. After a disk failure a replaced the disks one by one with 3TB disks. Resized array, volume group and partition to the new size according to these instructions: https://raid.wiki.kernel.org/index.php/Growing Everything went fine the array's up and running for a couple of months. I believe this is the first reboot since. I'm at a complete loss as what to do now. Any help is greatly appreciated. Here's the kern.log (I don't remember the misaligned warning, when I replaced the disks): Sep 7 19:09:43 fandango kernel: [ 3.259374] raid5: device sde1 operational as raid disk 2 Sep 7 19:09:43 fandango kernel: [ 3.259378] raid5: device sdd1 operational as raid disk 1 Sep 7 19:09:43 fandango kernel: [ 3.259380] raid5: device sdb1 operational as raid disk 0 Sep 7 19:09:43 fandango kernel: [ 3.259727] raid5: allocated 3228kB for md2 Sep 7 19:09:43 fandango kernel: [ 3.259764] raid5: raid level 5 set md2 active with 3 out of 3 devices, algorithm 2 Sep 7 19:09:43 fandango kernel: [ 3.259766] RAID5 conf printout: Sep 7 19:09:43 fandango kernel: [ 3.259768] --- rd:3 wd:3 Sep 7 19:09:43 fandango kernel: [ 3.259770] disk 0, o:1, dev:sdb1 Sep 7 19:09:43 fandango kernel: [ 3.259771] disk 1, o:1, dev:sdd1 Sep 7 19:09:43 fandango kernel: [ 3.259773] disk 2, o:1, dev:sde1 Sep 7 19:09:43 fandango kernel: [ 3.259781] md2: Warning: Device sde1 is misaligned Sep 7 19:09:43 fandango kernel: [ 3.259783] md2: Warning: Device sdd1 is misaligned Sep 7 19:09:43 fandango kernel: [ 3.259785] md2: Warning: Device sdb1 is misaligned Sep 7 19:09:43 fandango kernel: [ 3.259806] md2: detected capacity change from 0 to 1603139141632 Sep 7 19:09:43 fandango kernel: [ 3.261439] md2: unknown partition table Sep 7 19:09:43 fandango kernel: [ 3.409802] device-mapper: table: 252:2: md2 too small for target: start=384, len=11721064448, dev_size=3131131136 mdadm: /dev/md2: Version : 00.90 Creation Time : Wed Apr 29 23:31:24 2009 Raid Level : raid5 Array Size : 1565565568 (1493.04 GiB 1603.14 GB) Used Dev Size : 782782784 (746.52 GiB 801.57 GB) Raid Devices : 3 Total Devices : 3 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Fri Sep 7 21:30:40 2012 State : clean Active Devices : 3 Working Devices : 3 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 64K UUID : bbc76518:54235173:67388cd8:6b8a4141 (local to host fandango) Events : 0.16232920 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 8 49 1 active sync /dev/sdd1 2 8 65 2 active sync /dev/sde1 The size is much too small. It should be around 6TB not 1.5TB. Interestingly enough, the Array Size / Used Dev Size ratio seems to be correct. Many Thanks! Regards, Markus -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
