[macosx-unix] hosed RAID -> disk warrior to the rescue?

[Jan Schaumann]

Hi all,

I have the following scenario:

An XRaid is connected to a SAN switch.
An Xserve is connected to the same SAN switch.
A Solaris machine is connected to the same SAN switch.

The xserve creates a filesystem on the XRaid (RAID 5) and populates it
with data.

The solaris machine access the same disk through the SAN fabric and
creates a new disklabel on the disk, then creates a new filesystem on it
via newfs, then copies some data onto it.  (Obviously not intentionally,
but that's another story.)

The xserve still shows data on the disk, but some of it appears lost.

The xserve is rebooted and then doesn't recogize the disk anymore.
diskutil shows it as

/dev/disk3
   #:                   type name               size      identifier
   0:  GUID_partition_scheme                    *2.2 TB   disk3
   1: 6A85CF4D-1DD2-11B2-99A6-08002073                    128.0 MB disk3s1
   2: 6A87C46F-1DD2-11B2-99A6-08002073                    128.0 MB disk3s2
   3: 6A898CC3-1DD2-11B2-99A6-08002073                    2.2 TB disk3s7
   4: 6A945A3B-1DD2-11B2-99A6-08002073                    8.0 MB disk3s9

(which is the solaris partition table)

Obviously, mounting it fails:
$ mount /dev/disk3s7 /mnt3
/dev/disk3s7 on /mnt3: Incorrect super block.

One of the disks in the RAID is removed and reinserted, causing a
rebuild of the RAID 5.  The rebuild is still running, so we don't know
yet whether or not the rebuild will rebuild the solaris partition table
or the older apple table.  (It should rebuild the solaris partition
table, but we'll wait and see anyway.)

Most of the data stored on the disks should still be there, but is no
longer available from the Mac, as the partition table is different and
it can't find the right superblocks.

Does anybody know if DiskWarrior might be able to salvage whatever data
is still available on the disk?  Or if there are other applications?
Or, if none of the above, what kind of data recovery services are
available in the city and how they might charge (rough estimates)?

-Jan

-- 
Ancient Principle of WYGIWYGAINGW:
What You Get Is What You're Given, And It's No Good Whining.
--Terry Pratchett et al. (The Science of Discworld)
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