[Ocfs2-tools-users] Recovering corrupted files

[Chris Poupart]

Sunil Mushran wrote:
> # echo "stat /path/to/file" | debugfs.ocfs2 -n /dev/etherd/e1.0p5
>
> Do you see any extent records? If so, then you should be able to dd 
> the data out.
>
Actually, this returns an error, even on files that I know are good (on 
both mounted and unmounted drives).

In this case, this is the error:

stat: File not found by ocfs2_lookup '/u02/oradata/data/OCRFile'
> If not, then the search the journals. If you are lucky you could find an
> older image of the inode which has the extent records.
>
> # echo "logdump 0" | debugfs.ocfs2 -n /dev/sdX >log0
> Do it for all the slots and search for the inode number.
This looks promising.  I need to sort through the logs now, but there 
are several entries for files that belong to "oracle", and since there 
were only 3 files on the partition in question...
> http://oss.oracle.com/projects/ocfs2/dist/documentation/03-disk_format.pdf 
>
> You may find this doc relevant.
>
Thanks!  I will have a read through that.

-- Chris