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[Xen-devel] Question: block device for HVM

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Question: block device for HVM
From: Randy <randy.han@xxxxxxxxx>
Date: Tue, 22 Feb 2011 15:14:50 +0800
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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.

Randy

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