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Re: [Xen-devel] RFC/PATCH: hdparm tunable IDE write cache for HVM

To: "Rik van Riel" <riel@xxxxxxxxxx>
From: "Christian Limpach" <christian.limpach@xxxxxxxxx>
Date: Mon, 21 Aug 2006 00:03:26 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Sun, 20 Aug 2006 16:03:50 -0700
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List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On 8/11/06, Rik van Riel <riel@xxxxxxxxxx> wrote:

qemu 0.8.2 has a flush callback to the storage backends, so now it is
possible to implement hdparm tunable IDE write cache enable/disable for
guest domains, allowing people to pick speed or data consistency on a
case by case basis.

As an added benefit, really large LBA48 IOs will now no longer be broken
up into smaller IOs on the host side.

What do you think?


Checked in.  Please add a Signed-off-by line in the future.

   christian

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References:
- [Xen-devel] RFC/PATCH: hdparm tunable IDE write cache for HVM
  - From: Rik van Riel

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