[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 2/2] migration: failover: continue to wait card unplug on error
From: |
Laurent Vivier |
Subject: |
[PATCH 2/2] migration: failover: continue to wait card unplug on error |
Date: |
Tue, 29 Jun 2021 17:50:07 +0200 |
If the user cancels the migration in the unplug-wait state,
QEMU will try to plug back the card and this fails because the card
is partially unplugged.
To avoid the problem, continue to wait the card unplug, but to
allow the migration to be canceled if the card never finishes to unplug
use a timeout.
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1976852
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
migration/migration.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/migration/migration.c b/migration/migration.c
index 3e92c405a2b6..3b06d43a7f42 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -3679,6 +3679,17 @@ static void qemu_savevm_wait_unplug(MigrationState *s,
int old_state,
qemu_savevm_state_guest_unplug_pending()) {
qemu_sem_timedwait(&s->wait_unplug_sem, 250);
}
+ if (s->state != MIGRATION_STATUS_WAIT_UNPLUG) {
+ int timeout = 120; /* 30 seconds */
+ /*
+ * migration has been canceled
+ * but as we have started an unplug we must wait the end
+ * to be able to plug back the card
+ */
+ while (timeout-- && qemu_savevm_state_guest_unplug_pending()) {
+ qemu_sem_timedwait(&s->wait_unplug_sem, 250);
+ }
+ }
migrate_set_state(&s->state, MIGRATION_STATUS_WAIT_UNPLUG, new_state);
} else {
--
2.31.1