My Plextor NAS drive controller board broke down recently. It had two drives in RAID 1 configuration. The NAS drive runs linux. In trying to recover the data on the disks, I found http://www.linuxquestions.org/questi...1-disk-723225/
very helpful which described a very similar situation. However in following the same procedure I got the same results until just before the end.
"mdadm --assemble --scan --run" didn't work for me either, so I tried
mdadm --stop /dev/md0
mount /dev/sdb3 /mnt/old
mdadm stopped alright but in trying to mount the device, I still got the "mount: unknown filesystem type 'linux_raid_member" error.
So I still couldn't mount.
I can mount sdb2 on the same drive which is a small XFS partition
sdb1 is a Linux Swap
I'm a newbie to Linux, but because my situation was so similar and the responses to all the steps were equal, I don't know why I couldn't mount in the end.
Hope somebody can help me out.
BTW I also tried Disk Internals Linux Reader and it sees the partitions as EXT3 but still can't read them.