[plug] RAID 0 - invalid raid superblock (yay!)
Lachlan Evans
lachlan.evans at westnet.com.au
Mon May 24 04:17:27 WST 2004
Hi guys,
I've had a rather interesting day, today; my main storage machine's main
board went a little bit crazy.
I (used to) have a software RAID-0 array, 2x160GB, almost filled to the
brim. From what I've gathered, the BIOS/IDE controller went mental on the
old main board and couldn't detect the drives properly. Sometimes it'd say
that there's a 130GB and a 100GB drive, 130GB and 8GB - all kinds of
combinations, all completely wrong.
So, I changed over the board, got the system booted (and drives detected
properly!), and now I have these lovely messages in dmesg:
md: raid0 personality registered as nr 2
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
[events: 00000000]
md: invalid raid superblock magic on hdc1
md: hdc1 has invalid sb, not importing!
md: could not import hdc1!
[events: 00000000]
md: invalid raid superblock magic on hdd1
md: hdd1 has invalid sb, not importing!
md: could not import hdd1!
md: autorun ...
md: ... autorun DONE.
Which, to my understanding says the array is stuffed. However, the data
still "should be" intact, because I haven't written to the array since I
noticed that the drives weren't being detected properly, although I cannot
guarantee that.
So, the real question: Is the array completely knackered? Should I just
start again, and restore the backups I have? Or, is there some possible way
I can recover (hopefully with backup raid superblocks of sorts)?
Thanks in advance,
Lachlan
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