Hello
I think my filesystem/data is corrupted due to hangs and hard reset. I did a `reiserfsck --help` and tried a few options but it didn't work saying that the partition was mounted read/write so cannot perform option.
My question is how can I recover with reiser without (1) reinstalling (2) formatting the partition?
Much appreciated.
There is no way to repair a reiserfs filesystem while mounted. You can check the filesystem while the fs is mounted read only, but not repair it.
Your best bet would be to boot off a Gentoo LiveCD or a Knoppix CD and run reiserfsck on the unmounted partition(s).
After running:
# reiserfsck /dev/whatever"
you will be told of the best way to proceed. Some corruptions can be fixed with:
# reiserfsck --fix-fixable /dev/whatever
Otherwise you will need to run (if it said so):
# reiserfsck --rebuild-tree /dev/whatever
A rebuild tree can sometimes take a very long time, depending on the size of the filesystem and the number/size of files (eg a 20GB fs, with approx 2GB used took about 10-20 minutes to rebuild on a machine I had to try to ressurect some time ago). Just make sure the rebuild is not interuppted as you will most likely end up with a completely borked fs.
If the corruption is caused by bad blocks on the drive you should grab hold of dd_rescue as quick as possible to make a snapshot of the drive and get a new one.
-- Andrew Heberle
The goys have proven the following theorem...
-- Physicist John von Neumann, at the start of a classroom
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