Actually I have found this problem running iotest 132 for active async mirror I have sent yesturday. Anyway, the problem is actual for current backup/mirror implementation.
bdrv_co_discard must mark areas dirty after writing zeroes, it must call before_write_notifier chain to push underlying data to backup and it also must properly fill tracked request information. Signed-off-by: Denis V. Lunev <d...@openvz.org> CC: Vladimir Sementsov-Ogievskiy<vsement...@virtuozzo.com> CC: Stefan Hajnoczi <stefa...@redhat.com> CC: Fam Zheng <f...@redhat.com> CC: Kevin Wolf <kw...@redhat.com> CC: Max Reitz <mre...@redhat.com>
