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From: Norbert Marx <norbert.marx@ckmn.de>
To: xen-devel@lists.xensource.com
Subject: Re: why do I get bad disk write performance in the kernel 3.1?
Date: Wed, 18 Jan 2012 13:46:29 +0100	[thread overview]
Message-ID: <3163948.Ai5Fh6ZPuS@pc10> (raw)

Hello,

I have the same problem and filed a bug: 
http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1801

[...]
> > I'm execute with file:/, but in xenstore-list, continue with qdisk.
> 
> Please try using losetup to bind your file to /dev/loopN and specifying
> phy:/dev/loopN in your config. That should get you blkback.
> 
> [...]
> > I try with "file://" and result was qdisk again. Do you think is LVM
> > test need?
> 
> That would also be interesting.

With this hints I modified libxl__try_phy_backend and the result was vbd now. 
But something es does not work with /etc/xen/scripts/block. All details can be 
find at http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1801.

regards,
Norbert

             reply	other threads:[~2012-01-18 12:46 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-18 12:46 Norbert Marx [this message]
  -- strict thread matches above, loose matches on Subject: below --
2011-11-09 14:58 why do I get bad disk write performance in the kernel 3.1? Roberto Scudeller
2011-11-09 15:18 ` Konrad Rzeszutek Wilk
2011-11-09 16:52   ` Roberto Scudeller
2011-11-09 17:14     ` Roberto Scudeller
2011-11-10  3:42     ` Konrad Rzeszutek Wilk
2011-11-10  9:24       ` Ian Campbell
2011-11-10 14:25         ` Roberto Scudeller
2011-11-10 14:29           ` Ian Campbell

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