On 19.09.2016 23:21, John Snow wrote:
> 
> 
> On 09/19/2016 04:58 PM, Max Reitz wrote:
>> On 19.09.2016 18:44, John Snow wrote:
>>> Final re-send for wording.
>>>
>>> The move to blk_flush altered the behavior of migration and flushing
>>> nodes that are not reachable via the guest, but are still reachable
>>> via QEMU and may or may not need to be flushed.
>>>
>>> This is likely the simplest solution for now until we nail down our
>>> policy a bit more.
>>>
>>> This is intended for 2.6.2 and/or 2.7.1, to fix problems with libvirt
>>> et al being unable to migrate QEMU when the CDROM tray is open.
>>>
>>> v4:
>>>  Commit message update.
>>>
>>> v3:
>>>  Trying to take a hint from Kevin, reinstating bdrv_flush_all.
>>>  If it's not what we want, we can try moving back to v2,
>>>  acknowledging that a nicer solution in the future:
>>>  (A) Can skip flushing on devices that just don't need it, and
>>>  (B) Optionally institutes some sort of flush-on-eject policy.
>>>
>>> ________________________________________________________________________________
>>>
>>>
>>> For convenience, this branch is available at:
>>> https://github.com/jnsnow/qemu.git branch atapi-tray-migfix
>>> https://github.com/jnsnow/qemu/tree/atapi-tray-migfix
>>>
>>> This version is tagged atapi-tray-migfix-v4:
>>> https://github.com/jnsnow/qemu/releases/tag/atapi-tray-migfix-v4
>>>
>>> John Snow (2):
>>>   block: reintroduce bdrv_flush_all
>>>   qemu: use bdrv_flush_all for vm_stop et al
>>>
>>>  block/io.c            | 25 +++++++++++++++++++++++++
>>>  cpus.c                |  4 ++--
>>>  include/block/block.h |  1 +
>>>  3 files changed, 28 insertions(+), 2 deletions(-)
>>
>> Reviewed-by: Max Reitz <mre...@redhat.com>
>>
> 
> http://i.imgur.com/DNltmfT.jpg

http://bit.ly/2cLX1rm

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