Re: Filesystem Tests

Andrew Morton
2003-08-06T21:17:29Z

Mike Fedyk <mfedyk@matchmail.com> wrote:
>
> On Wed, Aug 06, 2003 at 06:34:10PM +0200, Diego Calleja Garc?a wrote:
> > El Wed, 06 Aug 2003 18:06:37 +0400 Hans Reiser <reiser@namesys.com> escribi?:
> >
> > > I don't think ext2 is a serious option for servers of the sort that
> > > Linux specializes in, which is probably why he didn't measure it.
> >
> > Why?
>
> Because if you have a power outage, or a crash, you have to run the
> filesystem check tools on it or risk damaging it further.
>
> Journaled filesystems have a much smaller chance of having problems after a
> crash.

Journalled filesytems have a runtime cost, and you're paying that all the
time.

If you're going 200 days between crashes on a disk-intensive box then using
a journalling fs to save 30 minutes at reboot time just doesn't stack up:
you've lost much, much more time than that across the 200 days.

It all depends on what the machine is doing and what your max downtime
requirements are.