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[Qemu-devel] [PATCH COLO-Frame v12 03/38] COLO: migrate colo related inf
From: |
zhanghailiang |
Subject: |
[Qemu-devel] [PATCH COLO-Frame v12 03/38] COLO: migrate colo related info to secondary node |
Date: |
Tue, 15 Dec 2015 16:22:24 +0800 |
We can know if VM in destination should go into COLO mode by refer to
the info that been migrated from PVM.
We skip this section if colo is not enabled (i.e.
migrate_set_capability colo off), so that, It not break compatibility with
migration
however the --enable-colo/disable-colo on the source/destination;
Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Li Zhijian <address@hidden>
Signed-off-by: Gonglei <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
---
v11:
- Add Reviewed-by tag
v10:
- Use VMSTATE_BOOL instead of VMSTATE_UNIT32 for 'colo_requested' (Dave's
suggestion).
Signed-off-by: zhanghailiang <address@hidden>
---
include/migration/colo.h | 2 ++
migration/Makefile.objs | 1 +
migration/colo-comm.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
vl.c | 3 ++-
4 files changed, 55 insertions(+), 1 deletion(-)
create mode 100644 migration/colo-comm.c
diff --git a/include/migration/colo.h b/include/migration/colo.h
index c60a590..9b6662d 100644
--- a/include/migration/colo.h
+++ b/include/migration/colo.h
@@ -14,7 +14,9 @@
#define QEMU_COLO_H
#include "qemu-common.h"
+#include "migration/migration.h"
bool colo_supported(void);
+void colo_info_mig_init(void);
#endif
diff --git a/migration/Makefile.objs b/migration/Makefile.objs
index 65ecc35..81b5713 100644
--- a/migration/Makefile.objs
+++ b/migration/Makefile.objs
@@ -1,5 +1,6 @@
common-obj-y += migration.o tcp.o
common-obj-$(CONFIG_COLO) += colo.o
+common-obj-y += colo-comm.o
common-obj-y += vmstate.o
common-obj-y += qemu-file.o qemu-file-buf.o qemu-file-unix.o qemu-file-stdio.o
common-obj-y += xbzrle.o postcopy-ram.o
diff --git a/migration/colo-comm.c b/migration/colo-comm.c
new file mode 100644
index 0000000..fb407e0
--- /dev/null
+++ b/migration/colo-comm.c
@@ -0,0 +1,50 @@
+/*
+ * COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO)
+ * (a.k.a. Fault Tolerance or Continuous Replication)
+ *
+ * Copyright (c) 2015 HUAWEI TECHNOLOGIES CO., LTD.
+ * Copyright (c) 2015 FUJITSU LIMITED
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * later. See the COPYING file in the top-level directory.
+ *
+ */
+
+#include <migration/colo.h>
+#include "trace.h"
+
+typedef struct {
+ bool colo_requested;
+} COLOInfo;
+
+static COLOInfo colo_info;
+
+static void colo_info_pre_save(void *opaque)
+{
+ COLOInfo *s = opaque;
+
+ s->colo_requested = migrate_colo_enabled();
+}
+
+static bool colo_info_need(void *opaque)
+{
+ return migrate_colo_enabled();
+}
+
+static const VMStateDescription colo_state = {
+ .name = "COLOState",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .pre_save = colo_info_pre_save,
+ .needed = colo_info_need,
+ .fields = (VMStateField[]) {
+ VMSTATE_BOOL(colo_requested, COLOInfo),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+void colo_info_mig_init(void)
+{
+ vmstate_register(NULL, 0, &colo_state, &colo_info);
+}
diff --git a/vl.c b/vl.c
index 4211ff1..f84fde8 100644
--- a/vl.c
+++ b/vl.c
@@ -91,6 +91,7 @@ int main(int argc, char **argv)
#include "sysemu/dma.h"
#include "audio/audio.h"
#include "migration/migration.h"
+#include "migration/colo.h"
#include "sysemu/kvm.h"
#include "qapi/qmp/qjson.h"
#include "qemu/option.h"
@@ -4450,7 +4451,7 @@ int main(int argc, char **argv, char **envp)
blk_mig_init();
ram_mig_init();
-
+ colo_info_mig_init();
/* If the currently selected machine wishes to override the units-per-bus
* property of its default HBA interface type, do so now. */
if (machine_class->units_per_default_bus) {
--
1.8.3.1
- [Qemu-devel] [PATCH COLO-Frame v12 00/38] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service (FT), zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 09/38] COLO/migration: Create a new communication path from destination to source, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 01/38] configure: Add parameter for configure to enable/disable COLO support, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 03/38] COLO: migrate colo related info to secondary node,
zhanghailiang <=
- [Qemu-devel] [PATCH COLO-Frame v12 04/38] migration: Export migrate_set_state(), zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 07/38] migration: Integrate COLO checkpoint process into loadvm, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 02/38] migration: Introduce capability 'x-colo' to migration, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 06/38] migration: Integrate COLO checkpoint process into migration, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 12/38] QEMUSizedBuffer: Introduce two help functions for qsb, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 17/38] COLO: Load VMState into qsb before restore it, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 16/38] ram/COLO: Record the dirty pages that SVM received, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 15/38] COLO: Load PVM's dirty pages into SVM's RAM cache temporarily, zhanghailiang, 2015/12/15
- [Qemu-devel] [PATCH COLO-Frame v12 05/38] migration: Add state records for migration incoming, zhanghailiang, 2015/12/15