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Re: [Xen-devel] Question: block device for HVM

from [Fajar A. Nugraha]

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To:	Randy <randy.han@xxxxxxxxx>
Subject:	Re: [Xen-devel] Question: block device for HVM
From:	"Fajar A. Nugraha" <list@xxxxxxxxx>
Date:	Tue, 22 Feb 2011 14:53:56 +0700
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On Tue, Feb 22, 2011 at 2:14 PM, Randy <randy.han@xxxxxxxxx> wrote:
> Hi all,
>
> I want to get the statistics of block device of HVM. I found xen created a
> vbd (/sys/bus/xen-backend/devices/vbd-1-768) when I created a HVM. But the
> vbd statistics (e.g. rd_req, wr_req, wr_sect, rd_sect) are all 0. For PV
> guest or PV driver, I can get the vbd's statistics directly. So I'm
> wondering vbd is not really used by HVM. Could anyone kindly tell me which
> device is used for block device in dom0 for HVM? Thanks in advance.

If the HVM domU uses PV drivers (like gplpv) the stats will be updated.

-- 
Fajar

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