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Re: [fedora-virt] Disk device performance in F11



On Fri, 2009-07-03 at 12:31 -0600, Jerry James wrote:
> On Fri, Jul 3, 2009 at 9:52 AM, Mark McLoughlin<markmc redhat com> wrote:
> > I'm not sure if you noticed in the other thread, but from:
> >
> >  https://bugzilla.redhat.com/509383
> >
> > Does running:
> >
> >  for f in /sys/block/vd*/queue/rotational; do echo 1 > $f; done
> >
> > inside the guest help?
> 
> I saw that.  However, the guest where I'm having the problem doesn't
> have a file named "rotational" in the "queue" directory.  It's running
> kernel version 2.6.28.9.  In what version did "rotational" appear?

Ah, okay - this file was only added in 2.6.29, and in 2.6.28 virtio-blk
used rotational mode anyway.

Cheers,
Mark.


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