FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.


» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > Redhat > EXT3 Users

 
 
LinkBack Thread Tools
 
Old 12-16-2013, 07:18 AM
Lars Noschinski
 
Default Recover files from a broken ext3 partition

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

[Please CC me on answers, I'm not subscribed]

Hi everyone,

I have got a hard disk which was damaged by a fall and would like to
recover a few files from that. (There is a backup for most of the
data, but a handful of recent files are missing. These are important
enough to spend some time on them, but not for paying a professional
data recovery service).

Using GNU ddrescue I was able to read 99.8% of the partition, so
there's hope the data is still there. Unfortunately, some key parts of
the file system seem to be damaged, so e2fsck fails:

- ------------------------------
% ddrescuelog -l- -b4096 sdd5.ddrescue.log > badblocks.sdd5.4096
% e2fsck -b 20480000 -v -f -L badblocks.sdd5.4096 sdd5
[...]
Pass 1: Checking inodes, blocks, and sizes
Block 1 in the primary group descriptors is on the bad block list

If the block is really bad, the filesystem can not be fixed.
You can remove this block from the bad block list and hope
that the block is really OK. But there are no guarantees.
- ------------------------------
[at 20480000 there seems to be an intact superblock; got the number
(and the block size) from 'mke2fs -n']


The files I am interested in are located under /home/$USER/Desktop and
/home/$USER/Dokumente; so I tried accessing them with debugfs.
Unfortunately, /home/$USER seems to be corrupted:

- ------------------------------
% LESS=FSRX debugfs -s 20480000 -b 4096 sdd5
debugfs 1.42.8 (20-Jun-2013)
debugfs: cd /home/$USER
debugfs: ls

EXT2 directory corrupted
- ------------------------------

So, any hints for me how to proceed? Is there a way to access the
Desktop and Dokumente subdirectories (provided they are themselves
undamaged)?

Also, I interrupted ddrescue for my access attempt (because it takes
really long to get all the still-good sectors from a 200GB partition).
Can debugfs show me where on the disk /home/$USER is located? This
would allow me to instruct ddrescue to concentrate on these parts.

Best regards, Lars
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.15 (GNU/Linux)
Comment: Using GnuPG with Icedove - http://www.enigmail.net/

iQEcBAEBAgAGBQJSrrdNAAoJEOUX5T7UhMS6jC0IAJfw81lWVe 76yjXTxQirKRWz
oDTmr7BTVHdXG9tw+v5aEuwItGkQVO4TjO/5A0weGa9Dl98VPERSw2AI2LK5OOIX
gyJAXP566rZ/73J9fiPf4g8NucsA4yT49Pq8dISW1kwN9Y9fk5TM7v5Y5DCGUu c1
PfZK6rvqimB4YPLLXWtW69hKt/IEtGiRTtQ0GNSGUeamS+Qm02/sCcRfkU0KC4MK
KblKfE49ApZU7zgH1GIoGmLI/cXWc/fmnbvsc/Pga+lapc7EAAtE691DSzZzu9zv
sO5c/QCgiwSyEZFGwdHw306G5D+aI3MJSFUfbuj9dOTQ7MKnhhlalMv 2UBMJpEM=
=vIVl
-----END PGP SIGNATURE-----

_______________________________________________
Ext3-users mailing list
Ext3-users@redhat.com
https://www.redhat.com/mailman/listinfo/ext3-users
 

Thread Tools




All times are GMT. The time now is 01:11 PM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright 2007 - 2008, www.linux-archive.org