From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir@xensource.com>
Subject: Re: Monitoring I/O rate for each VMs
Date: Mon, 27 Nov 2006 09:41:12 +0000
Message-ID: <C1906338.5198%keir@xensource.com>
References: <456AAF17.4000204@goirand.fr>
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To: Thomas Goirand <thomas@goirand.fr>
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On 27/11/06 09:25, "Thomas Goirand" <thomas@goirand.fr> wrote:

>> Unfortunately these count requests rather than bytes served. This may be
>> what you want though, as #requests should be proportional to the number of
>> expensive disc operations (seeking and settling). Long contiguous requests
>> are not proportionally more expensive than short ones.
> 
> Hi!
> 
> I didn't find such file where you said. Even a "locate statistics"
> didn't help. Note that I'm using lvm partitions, and xen 3.0.2-2 (and
> 2.0.7 in some older servers), and my LVs are of form /dev/lvm1/xen01, is
> <path-to-vdb> for loopback?

I think the stats were added during 3.0.3 development. There's no way to get
the information you seek with older versions of Xen, although you could try
taking the blkback driver from a 3.0.3 tree and build it against your Linux
dom0 kernel.

 -- Keir