Hi, Why was the improve-relatime.patch dropped from F10's kernel? F9 had relatime on by default using this patch. I first thought the upstream kernel had the patch now, but /proc/mounts does not show relatime in F10. I found this bug, looks related: mkinitrd can't deal with the "relatime" mount option https://bugzilla.redhat.com/show_bug.cgi?id=430280 More info: http://kerneltrap.org/node/14148 http://people.redhat.com/mingo/relatime-patches/improve-relatime.patch

Ricardo Argüello wrote: > > Why was the improve-relatime.patch dropped from F10's kernel? F9 had > relatime on by default using this patch. > I first thought the upstream kernel had the patch now, but > /proc/mounts does not show relatime in F10. > > I found this bug, looks related: > > mkinitrd can't deal with the "relatime" mount option > https://bugzilla.redhat.com/show_bug.cgi?id=430280 Speaking of, this looks to be... how old? Any chance of getting it fixed? (Especially with SSD's becoming more popular, for which it makes particular sense to request relatime?) I mean... if you don't know about this bug and add relatime to fstab, you've just made it impossible to upgrade the kernel. And the work-around (edit fstab to remove relatime, 'yum update kernel', edit fstab to put back relatime) isn't very friendly. -- Matthew Please do not quote my e-mail address unobfuscated in message bodies. -- "Ethics? We've heard of it" -- Microsoft -- fedora-devel-list mailing list fedora-devel-list(a)redhat.com https://www.redhat.com/mailman/listinfo/fedora-devel-list

Should I report the dropped improve-relatime.patch as a bug? The mkinitrd is a whole different thing. What I wanted was the improve-relatime.patch to be included in F10, as it is included in F9 by default: http://people.redhat.com/mingo/relatime-patches/improve-relatime.patch -- Ricardo Arguello On Tue, Jan 6, 2009 at 12:33 PM, Matthew Woehlke <mw_triad(a)users.sourceforge.net&gt; wrote: > Ricardo Argüello wrote: >> >> Why was the improve-relatime.patch dropped from F10's kernel? F9 had >> relatime on by default using this patch. >> I first thought the upstream kernel had the patch now, but >> /proc/mounts does not show relatime in F10. >> >> I found this bug, looks related: >> >> mkinitrd can't deal with the "relatime" mount option >> https://bugzilla.redhat.com/show_bug.cgi?id=430280 > > Speaking of, this looks to be... how old? Any chance of getting it fixed? > (Especially with SSD's becoming more popular, for which it makes particular > sense to request relatime?) > > I mean... if you don't know about this bug and add relatime to fstab, you've > just made it impossible to upgrade the kernel. And the work-around (edit > fstab to remove relatime, 'yum update kernel', edit fstab to put back > relatime) isn't very friendly. > > -- > Matthew > Please do not quote my e-mail address unobfuscated in message bodies. > -- > "Ethics? We've heard of it" -- Microsoft > > -- > fedora-devel-list mailing list > fedora-devel-list(a)redhat.com > https://www.redhat.com/mailman/listinfo/fedora-devel-list >

> On Tue, Jan 06, 2009 at 11:33:57AM -0600, Matthew Woehlke wrote: > > relatime is supported in the stock kernel, but without the heuristic > that avoids tmpreaper deleting your files at inappropriate times. It > should cause failure. Would the "improved relatime" patch solve that problem?

Huh. I actually meant "shouldn't cause failure" there, in terms of it still being a valid mount option. The improved relatime code adds that heuristic, which avoids the tmpreaper failure. I'm trying to get it upstream, at which point I'll backport it - I'm not enthusiastic about carrying it around as a custom modification forever.

Thanks Matthew, this is perhaps one of the most important performance tweaks for Fedora 11 and beyond. We need to add this to the Release Notes or something like that!