File system checking on ext3 after a system crash
Sev Binello
sev at bnl.gov
Mon Apr 9 18:29:57 UTC 2007
>
> 3) Periodically, and at a non-peak time, use the e2image program to
> save a backup copy of the filesystem metadata. Do this *especially*
> if you don't have space to do a real backup. This will give you at
> least some measure of a saving throw against a single bad disk write
> (caused by malfunctioning storage hardware, or the aforementioned
> buggy binary-only graphical driver written in C++ with the pointer
> error) from destroying a huge numer of files.
>
Hi -
I noted this response with interest.
I was unaware of this tool.
I did a quick test and looks simple to use, are there any caveats or
hidden gotchas ?
I understand it will only restore to the state it was in when the
image was taken,
but in a pinch that maybe an alternative we could use.
Any idea how long it takes to create/restore ?
Would it make sense to run on a daily basis ?
Also, wondering if you could point me to documentation explaining
how to
respond to e2fsck questions when it finds problems in the file system.
Thanks
-Sev
Sev Binello
Brookhaven National Laboratory
Upton, New York
631-344-5647
sev at bnl.gov
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