All,
I have a raid array that failed about a year and a half ago, around the
same time that my computer wouldn't post. I pulled apart the computer to
troubleshoot but made no headway, then got sidetracked on other things. The
point, I no longer have any logs to see why it failed or what FS type it
was.
Fast forward to now, I've put in the former raid disks into a new computer
and am attempting to rebuild the array. It was 3 disks, but one is bad. I
can assembled the other two into an array:
dan@#### ~/Documents/work $ sudo blkid
/dev/loop0: LABEL="UDF Volume" TYPE="udf"
/dev/sda1: LABEL="System Reserved" UUID="528642D98642BD6B" TYPE="ntfs"
/dev/sda5: UUID="c05eba1e-a49c-4ea7-a4b7-f3fd2eb5b5b3" TYPE="ext4"
/dev/sda6: UUID="21204c90-6058-4167-94b9-514fd474d2ce" TYPE="swap"
/dev/sda7: UUID="7c5d5947-36d7-4c4f-8c56-5034fc91cb6b" TYPE="ext4"
/dev/sdd1: UUID="7ec2e712-594d-6024-e183-a91eedb031b1"
TYPE="linux_raid_member"
/dev/sde1: UUID="7ec2e712-594d-6024-e183-a91eedb031b1"
TYPE="linux_raid_member"
dan@##### ~/Documents/work $ sudo cat /proc/mdstat
[sudo] password for dan:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5]
[raid4] [raid10]
md5 : active raid5 sde1[1] sdd1[0]
732571648 blocks level 5, 512k chunk, algorithm 2 [2/2] [UU]
unused devices: <none>
dan@torwin ~/Documents/work $ sudo mdadm -Q --detail /dev/md5
/dev/md5:
Version : 0.90
Creation Time : Thu Jan 30 16:00:01 2014
Raid Level : raid5
Array Size : 732571648 (698.63 GiB 750.15 GB)
Used Dev Size : 732571648 (698.63 GiB 750.15 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 5
Persistence : Superblock is persistent
Update Time : Thu Jan 30 16:17:48 2014
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
UUID : 7ec2e712:594d6024:e183a91e:edb031b1 (local to host torwin)
Events : 0.1
Number Major Minor RaidDevice State
0 8 49 0 active sync /dev/sdd1
1 8 65 1 active sync /dev/sde1
But when I go to mount the array:
dan@torwin ~/Documents/work $ sudo mount /dev/md5
/home/dan/Documents/work/foo
mount: you must specify the filesystem type
So clearly it wasn't an extfs file system. I ran fsck on it and get the
"Bad magic number" message. Anybody know a way to determine the FS type?
thanks,
--
Daniel B. Herrington
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