[mdlug] e2fsck - What to do?

[Wojtak, Greg]

Fsck has the -y option to "just do it."  If you are having that many
issues with the drive, you may want to try other measures to get your
data back, first, if it is important.  I'm no data recovery expert,
though, so I defer to someone more knowledgeable in this area.  I just
wanted to make sure you knew about the -y option and its implications if
you did use it.

Along the same lines, for commands that don't have a -f or -y to answer
yes for you, there is the greatest command of all time: yes.  For
example, (stupid example, but it shows the point):

# yes | rm -ri /tmp/*



-----Original Message-----
From: mdlug-bounces at mdlug.org [mailto:mdlug-bounces at mdlug.org] On Behalf
Of Stan Green
Sent: Sunday, August 03, 2008 10:07 PM
To: MDLUG
Subject: [mdlug] e2fsck - What to do?

First a little background:

I was copying data over NFS when the target computer locked up. I had to

hard-boot it to get it back. When it came back up, the drive I was
copying to 
was not mounted. (Normally it is.) The log showed:
EXT2-fs error (device hdg1): ext2_check_descriptors: Block bitmap for
group 
1280 not in group (block 65545)!
EXT2-fs: group descriptors corrupted!

So I ran mke2fs -n /dev/hdg1 to which gave me a superblock, 98304 that I
could 
use. I than ran: e2fsck -b 98304 /dev/hdg1

This started producing a large number (I canceled once and it showed 511

errors) of error all in the pattern:
Block bitmap for group 0 is not in group.  (block 1493433566)
Relocate<y>? yes

Inode bitmap for group 0 is not in group.  (block 772925346)
Relocate<y>? yes

Inode table for group 0 is not in group.  (block 1931314432)
WARNING: SEVERE DATA LOSS POSSIBLE.
Relocate<y>?

The question is am I on the right track to recover this drive and if so
what 
should I answer to the last question. (I don't want SEVERE DATA LOSS!) I
was 
answering No, but quit after about 40 sets of messages. Lastly, is there
any 
way to automate this so I don't have to sit an hit Y 1500 times?

Thanks,
Stan Green

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