Fahrzin Hemmati fahh...@gmail.com schrieb:
I recently re-installed Ubuntu, and somewhere along the way the
installer decided to clear out /var, which happens to be a separate
btrfs device from /. When I do btfrs filesystem df /var it outputs this:
Data: total=134.01GB, used=485.78
System, DUP: total=8.00MB, used=20.00KB
System: total=4.00MB, used=0.00
Metadata, DUP: total=1.62GB, used=6.87MB
Metadata: total=8.00MB, used=0.00
The reserved Data, 134GB, resembles closely the amount of data on my
drive before the formatting. Therefore, I believe what happened was the
installer didn't format /var, just cleared out the files. I didn't
properly backup /var, but I have important files on it. Is there a way
to have btrfs look around the reserved metadata area for orphaned files
and get them back?
I'd try photorec on this although I believe it will be hard for photorec
to recover the files due to btrfs' COW behaviour.
You could also try Josef's rescue tool or trying to intentionally corrupt
you current tree root so you could use mount -o recovery to let btrfs
mount an older tree root. This is just an idea, I think the btrfs folks here
have better ideas how to accomplish mounting an older tree root.
HTH
Kai
--
To unsubscribe from this list: send the line unsubscribe linux-btrfs in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
