Messages in this thread | | | Date | Mon, 19 May 2008 11:04:01 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH 0/4] (RESEND) ext3[34] barrier changes |
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Hi!
On Fri 2008-05-16 13:05:45, Andrew Morton wrote: > On Fri, 16 May 2008 14:02:46 -0500 Eric Sandeen <sandeen@redhat.com> wrote: > > > A collection of patches to make ext3 & 4 use barriers by > > default, and to call blkdev_issue_flush on fsync if they > > are enabled. > > Last time this came up lots of workloads slowed down by 30% so I > dropped the patches in horror. > > I just don't think we can quietly go and slow everyone's machines down > by this much. The overhead of journalling is already pretty horrid. > > If we were seeing a significant number of "hey, my disk got wrecked" > reports which attributable to this then yes, perhaps we should change > the default. But I've never seen _any_, although I've seen claims that > others have seen reports.
Do you remember seeing "my disk was wrecked" for reiserfs?
I believe I got some corruption, but it was
a) long time ago
b) took half a year of hard powerdowns to provoke
c) I did not report it anywhere because ... it just was not reproducible.
Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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