Hi guys, I got 8Tb on the line here, and I need to know if I am wasting my time now, or what the next step is to recovery ... Background: RAID 6, lost a controller card and two drives with it, didn't know. Some files were added in degraded state. Problem with MB, lost a 3rd drive. No writes of course, not enough drives to assemble raid. Researched the net as much as possible, added this to wiki page: http://en.wikipedia.org/wiki/Mdadm#Recovering_from_a_loss_of_raid_superblock So the above is exactly what I did to try and recover the raid. Present: Running in degraded state, trying to mount and then will add remaining disks. clop Desktop # cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] [faulty] md127 : active raid6 sdc1[0] sde1[3] sdf1[2] sdd1[1] 7814037504 blocks super 1.2 level 6, 4096k chunk, algorithm 2 [6/4] [UUUU__] md0 : active raid0 sdb1[0] sdj1[4] sdi1[3] sdh1[2] sdg1[1] 312601600 blocks super 1.1 512k chunks unused devices: <none> clop Desktop # mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Sun Jan 1 20:04:05 2012 Raid Level : raid6 Array Size : 7814037504 (7452.05 GiB 8001.57 GB) Used Dev Size : 1953509376 (1863.01 GiB 2000.39 GB) Raid Devices : 6 Total Devices : 4 Persistence : Superblock is persistent Update Time : Sun Jan 1 20:04:19 2012 State : clean, degraded Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 4096K Name : clop:1 (local to host clop) UUID : 696be297:5056e6e5:86181fb8:7b323fd6 Events : 2 Number Major Minor RaidDevice State 0 8 33 0 active sync /dev/sdc1 1 8 49 1 active sync /dev/sdd1 2 8 81 2 active sync /dev/sdf1 3 8 65 3 active sync /dev/sde1 4 0 0 4 removed 5 0 0 5 removed This is what I get when I try and mount: clop Desktop # mount /dev/md127 /media/ mount: wrong fs type, bad option, bad superblock on /dev/md127, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so clop Desktop # dmesg | tail [ 22.959022] ata11: EH complete [ 23.521403] ata12.00: configured for UDMA/133 [ 23.521408] ata12: EH complete [ 23.573277] EXT4-fs (md0): re-mounted. Opts: commit=0 [ 23.642304] EXT4-fs (sda1): re-mounted. Opts: commit=0 [ 23.717975] EXT4-fs (sda2): re-mounted. Opts: commit=0 [ 23.719060] EXT4-fs (sdl1): re-mounted. Opts: commit=0 [ 31.945290] eth1: no IPv6 routers present [ 126.446097] libfcoe_device_notification: NETDEV_UNREGISTER lo [ 529.325204] EXT4-fs (md127): bad geometry: block count 1953512448 exceeds size of device (1953509376 blocks) Have tried to get these numbers to change, nothing effects them. Is this thing dead? Or what's my next step to recovery? Many thanks! -- 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
