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List:       kvm
Subject:    Re: virtio block drivers not working
From:       Tomasz Chmielewski <mangoo () wpkg ! org>
Date:       2009-03-22 18:34:39
Message-ID: 49C684BF.8070808 () wpkg ! org
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Caleb Tennis schrieb:
> I've been very unsuccessful in using the virtio block drivers inside of 
> a guest.  I can't seem to make them active.  I'm positive my kernel has 
> support for them turned on (not as a module, but as a direct built in), 
> but when I change one of my ide drives over to virtio and boot, it isn't 
> found, and nothing under /sys or /dev indicates the presence of a 
> device.  dmesg doesn't indicate anything about them either.  I DO have 
> virtio networking enabled and working, so I know as a whole that some of 
> the virtio subsystem is functional.
> 
> The only thing I think I'm doing possibly differently than normal is 
> using the "-kernel" option to boot up from a kernel image vs. having an 
> installed boot image via lilo or grub.  Would this make any difference?
> 
> Is there any way for me to debug some more as to why the block drivers 
> don't seem to be showing up?

Did you try other guests?

For example, try downloading a SystemRescueCd beta - it includes virtio 
drivers:

http://www.sysresccd.org/Beta-x86

Boot the guest from this CD, with a drive attached as virtio.

Load virtio drivers - do you see /dev/vda?


-- 
Tomasz Chmielewski
http://wpkg.org
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