AW: AW: AW: ZFS: Corrupted pool metadata after adding vdev to a pool - no opportunity to rescue data from healthy vdevs? Remove a vdev? Rewrite metadata?

[Volodymyr Kostyrko]

14.09.2012 15:25, Thomas Göllner (Newsletter) wrote:
>> Try reading Max Bruning's blog at http://mbruning.blogspot.com/, there's a good data walk on raidz and raidz on-disk format.
>
> I'll do that, thanks for pointing me to it.
>
>>> I also think there is no way to write new or edit the lables of the discs?
>
>
>> This idea is called Block Pointer Rewrite and is not implemented yet. I have found no code to do that.
>
> I thought it may come to this -.- Because during my last reading I had to learn, that I have to find the "root block pointer" to recover the maybe overwritten labels... As it changes place and content with each copy on write process (each txg?) it will be a search for the needle in the haystack...

Not at all, what are you referring to is MOS and the one is contained in 
each UberBlock.

-- 
Sphinx of black quartz judge my vow.