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[Xen-users] blktap2 and qcow2 images

Hi There,

I've been trying to get this to work for the last couple of days, but found no information on the internet that would help. Essentially, a tap-ctl open command with a qcow2 image does not work (error code 2) and produces the following line in syslog:

tap-ctl: tap-err:tap_ctl_open: open failed, err -2

I have attached a shell script that reproduces the problem on my machine. The same script works fine if I use image format raw and the aio: prefex to the -a option.

My machine is basically a clean Ubuntu 12.04 desktop 64bit machine with everything up to date.


Attachment: cowTest
Description: Binary data

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