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Message-Id: <200903261829.34359.elendil@planet.nl>
Date: Thu, 26 Mar 2009 18:29:30 +0100
From: Frans Pop <elendil@...net.nl>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: tytso@....edu, mingo@...e.hu, jack@...e.cz,
akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
arjan@...radead.org, a.p.zijlstra@...llo.nl, npiggin@...e.de,
jens.axboe@...cle.com, drees76@...il.com, jesper@...gh.cc,
linux-kernel@...r.kernel.org, oleg@...hat.com, roland@...hat.com
Subject: Re: ext3 IO latency measurements (was: Linux 2.6.29)
Linus Torvalds wrote:
> And quite frankly, even if you then _manually_ put 'relatime' in
> /etc/fstab, the default Fedora install will totally ignore it. Why?
> Because it mounts the root partition while using initrd, and totally
> ignores /etc/fstab.
That's a difference between Fedora's initrd and Debian/Ubuntu's
initramfs-tools then. We do respect the mount options in fstab for the
root partition when root is mounted from the initrd:
$ cat /etc/fstab | grep " / "
/dev/mapper/main-root / ext3 relatime,errors=remount-ro 0 1
$ mount | grep " / "
/dev/mapper/main-root on / type ext3 (rw,relatime,errors=remount-ro)
$ cat /proc/cmdline
root=/dev/mapper/main-root ro vga=791 quiet
Cheers,
FJP
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