[linux-lvm] recovering data from inside a partitioned lv

[Anthony Clark]

The loop device solution worked!

thank you Christian!
--
Anthony Clark - anthony at merit.edu
734 527 5744 - (aim)anthonyclark




On Jun 22, 2009, at 1:32 PM, Christian Völker wrote:

> Hi,
>
>> Server has been rebooted, and now only /dev/vg1/lv1 is shown.  parted
>> can open the lv and shows 1 partition inside, but doesn't understand
>> ext3 volumes, so can't copy the partition to another disk.  tune2fs
>> can't see /dev/vg1/lv1p1, or I'd use that to change the fs type to  
>> ext2.
> I think the partition entry under /dev is missing. After the initial
> fdisk it was created.
> So two ways to recover:
> -Open fdisk on the lv. Do not do any changes, but leave and (w)rite.  
> I'd
> say the entries lv1p1 will be re-created then. Mount it, copy the data
> and get rid of partition.
> -Use loop device. This is much more complicated but will work, though:
> losetup -o$[512*63] /dev/loop1 /dev/vg1/lv1
> So it will create a loop device /dev/loop1 from lv1 with an offset of
> 512*63 (default blocksize and partitioning schema, may vary thought) .
> And then simply mount the loop device with the "-o loop" option for
> mount. Copy and get rid of partition.
>
> Hope this helps, let us know if it does.
> GReetings
>
> Christian
>
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