[Qemu-devel] [question] savevm/delvm: Is it neccesary to perform bdrv_drain_all before savevm and delvm?

[Zhang Haoyu]

Hi,

I noticed that bdrv_drain_all is performed in load_vmstate before 
bdrv_snapshot_goto,
and bdrv_drain_all is performed in qmp_transaction before 
internal_snapshot_prepare,
so is it also neccesary to perform bdrv_drain_all in savevm and delvm?

Thanks,
Zhang Haoyu