[Xen-users] blktap2 and qcow2 images

[Sebastian Unger <sebunger44@xxxxxxxxx>]

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.

Cheers,
Seb

Attachment: cowTest
Description: Binary data

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