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Re: [Xen-devel] HVM domain with write caching going on somewhere to disk
| To: | James Harper <james.harper@xxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] HVM domain with write caching going on somewhere to disk |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Thu, 08 Nov 2007 10:45:20 +0000 |
| Delivery-date: | Thu, 08 Nov 2007 02:46:45 -0800 |
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| Thread-topic: | [Xen-devel] HVM domain with write caching going on somewhere to disk |
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On 8/11/07 10:40, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote: > I've noticed before that any changes made in a Windows HVM domain > shortly before an 'xm shutdown' don't ever get written out... > > Anyway, is there a way to make sure that the qemu stuff doesn't do any > write caching at all? I don't think qemu caches writes internally, and also I believe that outstanding I/O requests are serviced before a domain is shut down. Could there be a problem with data ending up in the buffer cache in dom0 kernel? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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