Thanks again Saso,
at least I have closure :)
On Mon, Aug 13, 2012 at 11:24:55AM +0200, Sa?o Kiselkov wrote:
> On 08/13/2012 10:45 AM, Scott wrote:
> > Hi Saso,
> > thanks for your reply.
> > If all disks are the same, is the root pointer the same?
> > Also, is there a "signature" or something unique to the root block that I
> > can
> > search for on the disk? I'm going through the On-disk specification at the
> > moment.
> Nope. The checksums are part of the blockpointer, and the root
> blockpointer is in the uberblock, which itself resides in the label. By
> overwriting the label you've essentially erased all hope of practically
> finding the root of the filesystem tree - not even checksumming all
> possible block combinations (of which there are quite a few) will help
> you here, because you have no checksums to compare them against.
> I'd love to be wrong, and I might be (I don't have as intimate a
> knowledge of ZFS' on-disk structure as I'd like), but from where I'm
> standing, your raidz vdev is essentially lost.
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