Fixing serious FS errors (was serial console over the network)

Ahmed Kamal wrote:

>I understand the basics of file layout, inodes and
inode/file-name mapping >and such. But I still basically
always hit yes to fix any FS errors! Is >there any guide
to educate on when to say no ;)

I would also be interested in this, having a serious power
outage on Monday, which trashed the volume on which our mail
server stores its data.  This was an EXT3 volume which has
coped with power outages like this in the past, but this
time it went quite bad, with answering yes to the fix
questions resulting in half the mailstore ending up in
lost+found, and as I didn't know where those files went, and
several directories had gone missing, I had to revert to the
previous nights backup .

I can't help feeling that had I been a bit more conservative
with the questions I was asked, I could have done a better
recovery job.

Thanks.
Andrew. 

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