** Attachment added: "libvirtd-source.log"
   
https://bugs.launchpad.net/qemu/+bug/1711602/+attachment/4934825/+files/libvirtd-source.log

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https://bugs.launchpad.net/bugs/1711602

Title:
  --copy-storage-all failing with qemu 2.10

Status in QEMU:
  New
Status in libvirt package in Ubuntu:
  Confirmed
Status in qemu package in Ubuntu:
  Confirmed

Bug description:
  We fixed an issue around disk locking already in regard to qemu-nbd
  [1], but there still seem to be issues.

  $ virsh migrate --live --copy-storage-all kvmguest-artful-normal 
qemu+ssh://10.22.69.196/system
  error: internal error: qemu unexpectedly closed the monitor: 
2017-08-18T12:10:29.800397Z qemu-system-x86_64: -chardev pty,id=charserial0: 
char device redirected to /dev/pts/0 (label charserial0)
  2017-08-18T12:10:48.545776Z qemu-system-x86_64: load of migration failed: 
Input/output error

  Source libvirt log for the guest:
  2017-08-18 12:09:08.251+0000: initiating migration
  2017-08-18T12:09:08.809023Z qemu-system-x86_64: Unable to read from socket: 
Connection reset by peer
  2017-08-18T12:09:08.809481Z qemu-system-x86_64: Unable to read from socket: 
Connection reset by peer

  Target libvirt log for the guest:
  2017-08-18T12:09:08.730911Z qemu-system-x86_64: load of migration failed: 
Input/output error
  2017-08-18 12:09:09.010+0000: shutting down, reason=crashed

  Given the timing it seems that the actual copy now works (it is busy ~10 
seconds on my environment which would be the copy).
  Also we don't see the old errors we saw before, but afterwards on the actual 
take-over it fails.

  Dmesg has no related denials as often apparmor is in the mix.

  Need to check libvirt logs of source [2] and target [3] in Detail.

  [1]: https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg02200.html
  [2]: http://paste.ubuntu.com/25339356/
  [3]: http://paste.ubuntu.com/25339358/

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