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[Qemu-devel] [PATCH V9 19/20] COLO: quick failover process by kick COLO
From: |
Zhang Chen |
Subject: |
[Qemu-devel] [PATCH V9 19/20] COLO: quick failover process by kick COLO thread |
Date: |
Thu, 28 Jun 2018 04:41:35 +0800 |
From: zhanghailiang <address@hidden>
COLO thread may sleep at qemu_sem_wait(&s->colo_checkpoint_sem),
while failover works begin, It's better to wakeup it to quick
the process.
Signed-off-by: zhanghailiang <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
---
migration/colo.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/migration/colo.c b/migration/colo.c
index 4d0ee7d8aa..553b28adbb 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -131,6 +131,11 @@ static void primary_vm_do_failover(void)
migrate_set_state(&s->state, MIGRATION_STATUS_COLO,
MIGRATION_STATUS_COMPLETED);
+ /*
+ * kick COLO thread which might wait at
+ * qemu_sem_wait(&s->colo_checkpoint_sem).
+ */
+ colo_checkpoint_notify(migrate_get_current());
/*
* Wake up COLO thread which may blocked in recv() or send(),
@@ -557,6 +562,9 @@ static void colo_process_checkpoint(MigrationState *s)
qemu_sem_wait(&s->colo_checkpoint_sem);
+ if (s->state != MIGRATION_STATUS_COLO) {
+ goto out;
+ }
ret = colo_do_checkpoint_transaction(s, bioc, fb);
if (ret < 0) {
goto out;
--
2.17.GIT
- [Qemu-devel] [PATCH V9 10/20] qmp event: Add COLO_EXIT event to notify users while exited COLO, (continued)
- [Qemu-devel] [PATCH V9 10/20] qmp event: Add COLO_EXIT event to notify users while exited COLO, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 11/20] qapi/migration.json: Rename COLO unknown mode to none mode., Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 12/20] qapi: Add new command to query colo status, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 14/20] COLO: flush host dirty ram from cache, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 13/20] savevm: split the process of different stages for loadvm/savevm, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 15/20] net/net.c: Add net client type check function for COLO, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 16/20] filter: Add handle_event method for NetFilterClass, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 17/20] filter-rewriter: handle checkpoint and failover event, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 18/20] COLO: notify net filters about checkpoint/failover event, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 19/20] COLO: quick failover process by kick COLO thread,
Zhang Chen <=
- [Qemu-devel] [PATCH V9 20/20] docs: Add COLO status diagram to COLO-FT.txt, Zhang Chen, 2018/06/27