Thread (6 messages) 6 messages, 6 authors, 2010-05-25

Re: My Thecus RAID-0 filesystem unmountable with mdadm. Please help.

From: Michael Evans <hidden>
Date: 2010-05-24 21:57:50

Way too big and spread out, I don't know if anyone will have the time
to read that.

First, https://raid.wiki.kernel.org/index.php/RAID_Recovery

Second, what parameters do you remember about the original array?

Third, you probably want to try hexdumping the first megabyte or two
of each drive and looking for a superblock of your filesystem.

(man hexdump)

hexdump -Cn $((1024*1024)) /dev/whatever

You may also want to use dd to get the end of the block device.

Most importantly, knowing //where// the superblock is in your device
will allow for a guess about where in to the block-dev the data is
supposed to start.  That ///may/// allow for the creation of a
superblock with the proper alignment (and hopefully chunk size) to
read your data.
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