OS is CentOS 5.
Generally after an unclean shutdown, the CentOS startup text will display something about a fsck being needed due to an unclean shutdown. (I can't remember the exact text off the top of my head)
Also, if you go a certain number of days without a fsck, the message "check forced" will be displayed, and the machine will fsck.
But what if BOTH items are true? The machine had an unclean shutdown AND it has gone 1000 days without a fsck, which message gets printed during startup?
Why do I need to know? I need to know if it is safe to skip a fsck. This situation doesn't occur often, but it does come up. Of course they should have used xfs, of course things should be redundant, but this is real life. Sometimes you encounter the scenario where the fsck will take 10 hours and every minute of that is downtime. (Personally I would say never skip a fsck but that's not my call to make)