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RE: [Xen-devel] HVM domain with write caching going on somewhere to disk


  • To: "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Thu, 8 Nov 2007 22:47:11 +1100
  • Delivery-date: Thu, 08 Nov 2007 03:47:53 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Acgh89hmOjf1UcT/R7S91fG2xpfbEgAAJyu6AAAMH9AAAKHtpAAACubgAACgnTIAALk2gA==
  • Thread-topic: [Xen-devel] HVM domain with write caching going on somewhere to disk

> 
> Qemu-dm should probably be specifying O_DIRECT when it opens guest
storage
> volumes. There was discussion about this quite some time ago, but I
don't
> think any patch was ever floated.

I just changed the open in block.c to include O_DIRECT, but it fails to
boot. The VNC session flashes up very quickly and I can definitely see
the BIOS there but nothing else.

I'll have a look a bit further tomorrow...

Thanks

James

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