Xen users - Jul 2014 - blktap2 is not compatible with blktap-dkms in kernel 3.14

Hi all,

      These days, I've done some test with xen 4.1 and xen 4.2 under debian
wheezy 7.5.
 At the beginning, blktap2 2.0.91 works well with both disk type iao and vhd.
However, when I upgraded wheezy with jessie/sid,
the kernel version became 3.14-2, and blktap-dkms version became 2.0.93-0.3. 
This time, all blktap2 disk including aio and vhd went wrong.
Error messages are: 
   root@debian:~# xm start win08 
   Error: ('create', '-aaio:/srv/local/1.raw') failed (1280 )
And errors also appears in syslog:
  Jul 30 13:58:13 debian tapdisk2[17102]: failed to complete server: -2 
  Jul 30 13:58:13 debian tap-ctl: tap-err:tap_ctl_read_message: failure reading
message
  Jul 30 13:58:13 debian tap-ctl: tap-err:tap_ctl_send_and_receive: failed to
receive 'unknown' message
  Jul 30 13:58:14 debian logger: /etc/xen/scripts/xen-hotplug-cleanup:
XENBUS_PATH=backend/vfb/6/0
I'm sure this incompatibility was brought in with the new blktap-dkms 2.0.93
patched for kernel 3.14-2, is there anyway to solve this problem?

Kevin,


Best Regards



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