v2: * New patch to use bdrv_drain_all_begin/end() in savevm/loadvm [Kevin] (All other patches unchanged)
The 'savevm' command hangs when -object iothread is used. See patches for details, but basically the vmstate read/write code didn't conform to the latest block layer locking rules. Stefan Hajnoczi (4): block: count bdrv_co_rw_vmstate() requests block: use BDRV_POLL_WHILE() in bdrv_rw_vmstate() migration: avoid recursive AioContext locking in save_vmstate() migration: use bdrv_drain_all_begin/end() instead bdrv_drain_all() block/io.c | 21 +++++++++++++-------- migration/savevm.c | 21 +++++++++++++++++++-- 2 files changed, 32 insertions(+), 10 deletions(-) -- 2.9.3
