On Thu, Jan 06, 2005 at 01:26:02AM -0700, Glenn Oppegard wrote:
> Hello,
>
> We have production machines that have ext3 partitions bigger than
> 100GB. On our last kernel upgrade, we were surprised to see the
> machines do an fsck on all partitions even though they were unmounted
> cleanly.
>
> Upon further investigation we found the tune2fs options that force
> fscks of partitions after a certain number of mounts, or after a
> certain period of time since the last fsck (6 months in our case). My
> question is, is it detrimental to disable these auto-checks and not run
> fsck periodically?
If you always upgrade to the latest kernel when it's out, it's probably
a good idea to leave it on; otherwise, and as long as you don't
experience problems, I suggest to switch it off.
> The man page for tune2fs says it's not wise...
That is mostly relevant for systems that don't take regular backups. If
you do (and for the sake of your customers, I hope that is the case),
the extra precaution isn't really necessary, and probably a bad idea if
the cost involved (in terms of downtime) is too high.
The idea of the fsck is so that you would notice if anything out of the
ordinary is going on in the kernel. If you are, however, running the
same kernel all the time, either nothing will happen (and the fsck's are
superfluous), or your kernel is broken and you'll be fucked anyway (and
the fsck's won't help you).
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