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[Qemu-devel] [PATCH V9 10/20] qmp event: Add COLO_EXIT event to notify u
From: |
Zhang Chen |
Subject: |
[Qemu-devel] [PATCH V9 10/20] qmp event: Add COLO_EXIT event to notify users while exited COLO |
Date: |
Thu, 28 Jun 2018 04:41:26 +0800 |
From: zhanghailiang <address@hidden>
If some errors happen during VM's COLO FT stage, it's important to
notify the users of this event. Together with 'x-colo-lost-heartbeat',
Users can intervene in COLO's failover work immediately.
If users don't want to get involved in COLO's failover verdict,
it is still necessary to notify users that we exited COLO mode.
Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Li Zhijian <address@hidden>
Signed-off-by: Zhang Chen <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Markus Armbruster <address@hidden>
---
migration/colo.c | 31 +++++++++++++++++++++++++++++++
qapi/migration.json | 38 ++++++++++++++++++++++++++++++++++++++
2 files changed, 69 insertions(+)
diff --git a/migration/colo.c b/migration/colo.c
index c083d3696f..ab484ad754 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -28,6 +28,7 @@
#include "net/colo-compare.h"
#include "net/colo.h"
#include "block/block.h"
+#include "qapi/qapi-events-migration.h"
static bool vmstate_loading;
static Notifier packets_compare_notifier;
@@ -514,6 +515,23 @@ out:
qemu_fclose(fb);
}
+ /*
+ * There are only two reasons we can get here, some error happened
+ * or the user triggered failover.
+ */
+ switch (failover_get_state()) {
+ case FAILOVER_STATUS_NONE:
+ qapi_event_send_colo_exit(COLO_MODE_PRIMARY,
+ COLO_EXIT_REASON_ERROR, NULL);
+ break;
+ case FAILOVER_STATUS_REQUIRE:
+ qapi_event_send_colo_exit(COLO_MODE_PRIMARY,
+ COLO_EXIT_REASON_REQUEST, NULL);
+ break;
+ default:
+ abort();
+ }
+
/* Hope this not to be too long to wait here */
qemu_sem_wait(&s->colo_exit_sem);
qemu_sem_destroy(&s->colo_exit_sem);
@@ -745,6 +763,19 @@ out:
error_report_err(local_err);
}
+ switch (failover_get_state()) {
+ case FAILOVER_STATUS_NONE:
+ qapi_event_send_colo_exit(COLO_MODE_SECONDARY,
+ COLO_EXIT_REASON_ERROR, NULL);
+ break;
+ case FAILOVER_STATUS_REQUIRE:
+ qapi_event_send_colo_exit(COLO_MODE_SECONDARY,
+ COLO_EXIT_REASON_REQUEST, NULL);
+ break;
+ default:
+ abort();
+ }
+
if (fb) {
qemu_fclose(fb);
}
diff --git a/qapi/migration.json b/qapi/migration.json
index 1b4c1db670..d8c3b2e443 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -897,6 +897,44 @@
{ 'enum': 'FailoverStatus',
'data': [ 'none', 'require', 'active', 'completed', 'relaunch' ] }
+##
+# @COLO_EXIT:
+#
+# Emitted when VM finishes COLO mode due to some errors happening or
+# at the request of users.
+#
+# @mode: report COLO mode when COLO exited.
+#
+# @reason: describes the reason for the COLO exit.
+#
+# Since: 3.0
+#
+# Example:
+#
+# <- { "timestamp": {"seconds": 2032141960, "microseconds": 417172},
+# "event": "COLO_EXIT", "data": {"mode": "primary", "reason": "request" }
}
+#
+##
+{ 'event': 'COLO_EXIT',
+ 'data': {'mode': 'COLOMode', 'reason': 'COLOExitReason' } }
+
+##
+# @COLOExitReason:
+#
+# The reason for a COLO exit
+#
+# @none: no failover has ever happened. This can't occur in the
+# COLO_EXIT event, only in the result of query-colo-status.
+#
+# @request: COLO exit is due to an external request
+#
+# @error: COLO exit is due to an internal error
+#
+# Since: 3.0
+##
+{ 'enum': 'COLOExitReason',
+ 'data': [ 'none', 'request', 'error' ] }
+
##
# @x-colo-lost-heartbeat:
#
--
2.17.GIT
- [Qemu-devel] [PATCH V9 00/20] COLO: integrate colo frame with block replication and COLO proxy, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 01/20] filter-rewriter: Add TCP state machine and fix memory leak in connection_track_table, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 02/20] colo-compare: implement the process of checkpoint, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 03/20] colo-compare: use notifier to notify packets comparing result, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 04/20] COLO: integrate colo compare with colo frame, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 05/20] COLO: Add block replication into colo process, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 06/20] COLO: Remove colo_state migration struct, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 07/20] COLO: Load dirty pages into SVM's RAM cache firstly, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 08/20] ram/COLO: Record the dirty pages that SVM received, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 09/20] COLO: Flush memory data from ram cache, Zhang Chen, 2018/06/27
- [Qemu-devel] [PATCH V9 10/20] qmp event: Add COLO_EXIT event to notify users while exited COLO,
Zhang Chen <=
- [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