RAID5 volumes suddenly lost superblock and show weird hexdump patterns
I got some of my RAID5 array volumes damaged. I have no idea what happened, I was simply trying to manually assemble them after a reboot, only to discover they are no longer recognized by mdadm as containing a superblock.
What's interesting and really weird (to my humble knowledge at least) is that hexdumps show interesting patterns. http://pastebin.com/m494e69c0
Obviously far from being random garbage (hence I'm ruling out media damage). Does RAID create this sort of data sequences as part of its operation? Could this have been deliberate overwriting of my volumes?
I'm desperately trying to recover data on this array. Any help/pointers appreciated!
Thanks
Signature · 2 lines
View this message in context: http://www.nabble.com/RAID5-volumes-suddenly-lost-superblock-and-show-weird-hexdump-patterns-tp22849175p22849175.html Sent from the linux-raid mailing list archive at Nabble.com.
Quoted 10 lines · estr4ng3d <[email protected]> writes:
I got some of my RAID5 array volumes damaged. I have no idea what happened, I was simply trying to manually assemble them after a reboot, only to discover they are no longer recognized by mdadm as containing a superblock.
What's interesting and really weird (to my humble knowledge at least) is that hexdumps show interesting patterns. http://pastebin.com/m494e69c0
Obviously far from being random garbage (hence I'm ruling out media damage). Does RAID create this sort of data sequences as part of its operation? Could this have been deliberate overwriting of my volumes?
Quoted 4 lines
I'm desperately trying to recover data on this array. Any help/pointers appreciated!
Thanks
Looks more like you formated /dev/sda with ext2 instead of /dev/md0.
MfG
Goswin