Re: parent transid verify failures on 2.6.39

[Chris Mason <chris.mason@xxxxxxxxxx>]

Excerpts from Andrej Podzimek's message of 2011-06-22 18:42:28 -0400:
> 
> Could I try your hack, pretty please? If there's any chance it could either resolve this problem
> 
>     http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg10683.html ,
> 
> or at least restore the data from the filesystem, then I'd like to give it a go. Waiting for the new btrfsck is currently not an option for me :-)

It looks like your box is failing to read the extent allocation tree.
We don't allow the mount to proceed without that tree, but you don't
actually need it for a readonly mount (to copy things off).

Josef, is your hack just a mount option to make -o readonly skip the
extent allocation tree?

I can put this into my -o recovery patch and we can give it a try.

-chris
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