Automatic fsck

Alexander Jones alex at
Tue Aug 12 13:59:22 UTC 2008

2008/8/12 Lars Wirzenius <lars at>:
> A way to avoid that would be to set up systems with LVM, and use an LVM
> snapshot volume for running fsck. This would give fsck a frozen snapshot
> of the system, and should work better. However, it requires some free
> space to be used, and I haven't actually tried it yet. Reserving some
> disk space just for this probably isn't going to be all that popular,
> either. However, for systems on which it would be acceptable, it might
> be worthwhile to investigate this.

And then what happens when it fails the check? Sounds pretty messy to me.

I say we look into fixing e2fsck to do online consistency checking
without borking over changing filesystem contents. Don't other OS/FS
combos do this well?

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