Re: [Qemu-devel] qemu 2.0, deadlock in block-commit

["Marcin Gibuła" <m.gibula@beyond.pl>]

W dniu 2014-05-23 15:14, Marcin Gibuła pisze:
>>> bdrv_requests_pending(), called by bdrv_requests_pending_all(), is the
>>> function that determines for each of the disks in your VM if it still
>>> has requests in flight that need to be completed. This function must
>>> have returned true even though there is nothing to wait for.
>>>
>>> Can you check which of its conditions led to this behaviour, and for
>>> which disk it did? Either by setting a breakpoint there and
>>> singlestepping through the function the next time it is called (if the
>>> poll even has a timeout), or by inspecting the conditions manually in
>>> gdb.
>
> The condition that is true is:
>
> if (!QLIST_EMPTY(&bs->tracked_requests))
>
> and it's returned for intermediate qcow2 which is being commited.

My mistake, this condition is true not for intermediate file, but for an 
active one. Sorry for confusion.

-- 
mg