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[Qemu-devel] [PATCH COLO-Frame v15 16/38] COLO: synchronize PVM's state
From: |
zhanghailiang |
Subject: |
[Qemu-devel] [PATCH COLO-Frame v15 16/38] COLO: synchronize PVM's state to SVM periodically |
Date: |
Mon, 22 Feb 2016 10:40:10 +0800 |
Do checkpoint periodically, the default interval is 200ms.
Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Li Zhijian <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
---
v12:
- Add Reviewed-by tag
v11:
- Fix wrong sleep time for checkpoint period. (Dave's comment)
---
migration/colo.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/migration/colo.c b/migration/colo.c
index 473fb14..ba3b310 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -11,6 +11,7 @@
*/
#include <unistd.h>
+#include "qemu/timer.h"
#include "sysemu/sysemu.h"
#include "migration/colo.h"
#include "trace.h"
@@ -230,6 +231,7 @@ out:
static void colo_process_checkpoint(MigrationState *s)
{
QEMUSizedBuffer *buffer = NULL;
+ int64_t current_time, checkpoint_time = qemu_clock_get_ms(QEMU_CLOCK_HOST);
Error *local_err = NULL;
int ret;
@@ -261,11 +263,21 @@ static void colo_process_checkpoint(MigrationState *s)
trace_colo_vm_state_change("stop", "run");
while (s->state == MIGRATION_STATUS_COLO) {
+ current_time = qemu_clock_get_ms(QEMU_CLOCK_HOST);
+ if (current_time - checkpoint_time <
+ s->parameters[MIGRATION_PARAMETER_X_CHECKPOINT_DELAY]) {
+ int64_t delay_ms;
+
+ delay_ms = s->parameters[MIGRATION_PARAMETER_X_CHECKPOINT_DELAY] -
+ (current_time - checkpoint_time);
+ g_usleep(delay_ms * 1000);
+ }
/* start a colo checkpoint */
ret = colo_do_checkpoint_transaction(s, buffer);
if (ret < 0) {
goto out;
}
+ checkpoint_time = qemu_clock_get_ms(QEMU_CLOCK_HOST);
}
out:
--
1.8.3.1
- [Qemu-devel] [PATCH COLO-Frame v15 32/38] filter-buffer: Accept zero interval, (continued)
- [Qemu-devel] [PATCH COLO-Frame v15 32/38] filter-buffer: Accept zero interval, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 35/38] COLO: manage the status of buffer filters for PVM, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 26/38] savevm: Introduce two helper functions for save/find loadvm_handlers entry, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 34/38] COLO/filter: add each netdev a buffer filter, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 21/38] qmp event: Add COLO_EXIT event to notify users while exited from COLO, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 31/38] net/filter: Add a 'status' property for filter object, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 38/38] COLO: Add block replication into colo process, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 22/38] COLO failover: Shutdown related socket fd when do failover, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 36/38] filter-buffer: make filter_buffer_flush() public, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 37/38] COLO: flush buffered packets in checkpoint process or exit COLO, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 16/38] COLO: synchronize PVM's state to SVM periodically,
zhanghailiang <=
- [Qemu-devel] [PATCH COLO-Frame v15 27/38] migration/savevm: Add new helpers to process the different stages of loadvm, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 28/38] migration/savevm: Export two helper functions for savevm process, zhanghailiang, 2016/02/21
- Re: [Qemu-devel] [PATCH COLO-Frame v15 00/38] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service (FT), Dr. David Alan Gilbert, 2016/02/25