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[Xen-users] loopback domU write


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Chris Moore" <christoph.moore@xxxxxxxxx>
  • Date: Fri, 8 Jun 2007 14:17:59 -0500
  • Delivery-date: Tue, 12 Jun 2007 09:51:13 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>


I have a architecture-esque question:

When a file-backed(loopback, not blktap) PV domU writes, I have heard that it does not write directly to disk and is buffered somewhere.
Where then, is it buffered?  Is it in the dom0 loopback driver(mem), the dom0 filesystem cache(mem) or somewhere else?

Thanks
Chris

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