Re: Fixing corrupt reiserfs partition when it registers as full

[Oleg Drokin <green@namesys.com>]

Hello!

On Wed, Jun 04, 2003 at 06:14:36PM -0400, Brian G. Olson wrote:
> Okay, I've got a reiserfs partition that went bad. I'm don't know how,
> but for some reason the partition became completely full.  Showing up as
> 100% full using df -h. However checking all the files on the partition
> (using du -shc) it should have been a little more than half full (2.4G
> partition), just as I remember df -h showing the last time I checked. So
> I unmounted it, and checked with reiserfsck --check.  Sure enough, it
> said I had a problem and told me to do use --rebuild-tree.  Okay, I do
> that and pass 1 completes. Then on pass 2 it says it wants to add a
> bunch of leaves (on the order of 10,000 leaves), but of course the
> partition registers as full so it fails. That is where I am currently
> stuck. I can't even mount it anymore, mount says it's 'not a directory'. 
> I'm currently using reiserfsck version 3.6.6 from the Knoppix v3.2 cd.
> Now I'm gonna try to find a newer version to use, but in the mean time,
> if anyone has any ideas I'd really appreciate it. Thanks

Hm, the easiest solution is to copy entire partition with 'dd' to a bigger partition
or to a file (and then append a file with some zeroes like this:
"dd if=/dev/zero bs=4096 count=11000 | cat >>filewithpartition.img"),
then run "reiserfsck --rebuild-sb" on the resulting partition or file,
it will ask you some questions and you need to agree to a proposed fs size and you must say "no"
to a question that asks if you did a resize.
This will add some more space for fsck to work with.
Then retry "reiserfsck --rebuild-tree" operation.

If you choose to copy image into a file, you will be able to mount the image
using the loop device driver (-o loop option to mount command) after succesful
finish of "reiserfsck --rebuild-tree" operation.

Bye,
    Oleg