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[Xen-devel] Re: [PATCH 0/1] Output Virtual Block Device requests informa

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Re: [PATCH 0/1] Output Virtual Block Device requests information ver. 2
From: Anthony Liguori <aliguori@xxxxxxxxxx>
Date: Fri, 23 Jun 2006 08:57:34 -0500
Delivery-date: Fri, 23 Jun 2006 06:58:15 -0700
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User-agent: Pan/0.14.2 (This is not a psychotic episode. It's a cleansing moment of clarity.)
You might want to send a note to LKML CC'ing GKH to validate that this is
a reasonable sysfs naming convention.

Or if anyone on the list can comment, that would be nice too.  The kernel
maintainers seem rather picky about how sysfs paths are chosen.

Regards,

Anthony Liguori

On Fri, 23 Jun 2006 20:36:31 +0900, Satoshi Uchida wrote:

> 
> Hi, Keir.
> 
> I changed the location to outputs statistical information of virtual block 
> device (VBD)
> from the /proc file system to the sysfs.
> The location is 'statstics' directory under each VBD directory,
> for example, /sys/devices/xen-backend/vbd-x-xxxx/statistics.
> 
> The 'statistics' directory includes the following three statistical 
> informations.
>   oo_req
>        is the number of Out of(?) requests.
>   rd_req
>        is the number of pended READ requests.
>   wr_req
>        is the number of pended WRITE requests.
> 
> These patches provide the function to output the information to sysfs.
> It does not include the modifications of a xentop command and a libxenstat 
> library
> (these were included by the former patches).
> I plans to release the patches of xentop and libxenstat as soon as possible. 
> 
> 
> Thanks,
> Satoshi UCHIDA.



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