On Wed, Sep 13, 2000 at 10:51:27AM +0200, Petr Novotny wrote:
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> > And to get this a little more on topic:
> > http://www.jedi.claranet.fr/qmail-reiserfs-howto.html
>
> 1. What's that? qmail's queue can be mounted noatime? Huh!
> Please try "grep atime /usr/src/qmail/qmail-1.03/*c" and then
> withdraw your claims. atime is used to identify ossified files in the
> queue.
http://cr.yp.to/qmail/faq/reliability.html#filesystems
djb himself says you can safely put the qmail queue on a noatime
filesystem.
> 2. Why would you want to patch qmail to skip fsync() calls?
Performance.
> Doesn't mounting your queue with "nosync" have the same effect?
Nope.
> (It's a very silly idea to do so, though.) The sync/nosync can be
> changed with a simple remount - patched qmail has to be
> recompiled, stopped and replaced.
Correct.
> 3. I am not sure the "sync" patch from that article is sufficient; you
> don't only need "link" but also open/creat, unlink and rename to be
> "post-synced" the same way.
Those are synchronous already on ext2fs/ReiserFS.
> To anyone reading the article mentioned: Please take it with a
> grain of salt. There are some good ideas and there are some
> misconceptions.
Got that right :)
Greetz, Peter.
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