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[Qemu-devel] [PATCH for-2.5] call bdrv_drain_all() even if the vm is sto
From: |
Wen Congyang |
Subject: |
[Qemu-devel] [PATCH for-2.5] call bdrv_drain_all() even if the vm is stopped |
Date: |
Fri, 20 Nov 2015 17:34:38 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
There are still I/O operations when the vm is stopped. For example, stop the
vm, and do block
migration. In this case, we don't drain all I/O operation, and may meet the
following problem:
qemu-system-x86_64: migration/block.c:731: block_save_complete: Assertion
`block_mig_state.submitted == 0' failed.
Signed-off-by: Wen Congyang <address@hidden>
---
cpus.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/cpus.c b/cpus.c
index 877bd70..43676fa 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1415,6 +1415,8 @@ int vm_stop_force_state(RunState state)
return vm_stop(state);
} else {
runstate_set(state);
+
+ bdrv_drain_all();
/* Make sure to return an error if the flush in a previous vm_stop()
* failed. */
return bdrv_flush_all();
--
2.5.0
- [Qemu-devel] [PATCH for-2.5] call bdrv_drain_all() even if the vm is stopped,
Wen Congyang <=