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COLO: Add block replication into colo process

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Make sure master start block replication after slave's block
replication started.

Besides, we need to activate VM's blocks before goes into
COLO state.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Zhang Chen <zhangckid@gmail.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhang Chen 2018-09-03 12:38:46 +08:00 committed by Jason Wang
parent 131b2153fc
commit 8e48ac9586
2 changed files with 53 additions and 0 deletions
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43
migration/colo.c
View File

@ -27,6 +27,7 @@
#include "replication.h"
#include "net/colo-compare.h"
#include "net/colo.h"
#include "block/block.h"
static bool vmstate_loading;
static Notifier packets_compare_notifier;
@ -56,6 +57,7 @@ static void secondary_vm_do_failover(void)
{
int old_state;
MigrationIncomingState *mis = migration_incoming_get_current();
Error *local_err = NULL;
/* Can not do failover during the process of VM's loading VMstate, Or
* it will break the secondary VM.
@ -73,6 +75,11 @@ static void secondary_vm_do_failover(void)
migrate_set_state(&mis->state, MIGRATION_STATUS_COLO,
MIGRATION_STATUS_COMPLETED);
replication_stop_all(true, &local_err);
if (local_err) {
error_report_err(local_err);
}
if (!autostart) {
error_report("\"-S\" qemu option will be ignored in secondary side");
/* recover runstate to normal migration finish state */
@ -110,6 +117,7 @@ static void primary_vm_do_failover(void)
{
MigrationState *s = migrate_get_current();
int old_state;
Error *local_err = NULL;
migrate_set_state(&s->state, MIGRATION_STATUS_COLO,
MIGRATION_STATUS_COMPLETED);
@ -133,6 +141,13 @@ static void primary_vm_do_failover(void)
FailoverStatus_str(old_state));
return;
}
replication_stop_all(true, &local_err);
if (local_err) {
error_report_err(local_err);
local_err = NULL;
}
/* Notify COLO thread that failover work is finished */
qemu_sem_post(&s->colo_exit_sem);
}
@ -356,6 +371,11 @@ static int colo_do_checkpoint_transaction(MigrationState *s,
qemu_savevm_state_header(fb);
qemu_savevm_state_setup(fb);
qemu_mutex_lock_iothread();
replication_do_checkpoint_all(&local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
goto out;
}
qemu_savevm_state_complete_precopy(fb, false, false);
qemu_mutex_unlock_iothread();
@ -446,6 +466,12 @@ static void colo_process_checkpoint(MigrationState *s)
object_unref(OBJECT(bioc));
qemu_mutex_lock_iothread();
replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
goto out;
}
vm_start();
qemu_mutex_unlock_iothread();
trace_colo_vm_state_change("stop", "run");
@ -586,6 +612,11 @@ void *colo_process_incoming_thread(void *opaque)
object_unref(OBJECT(bioc));
qemu_mutex_lock_iothread();
replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
goto out;
}
vm_start();
trace_colo_vm_state_change("stop", "run");
qemu_mutex_unlock_iothread();
@ -666,6 +697,18 @@ void *colo_process_incoming_thread(void *opaque)
goto out;
}
replication_get_error_all(&local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
goto out;
}
/* discard colo disk buffer */
replication_do_checkpoint_all(&local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
goto out;
}
vmstate_loading = false;
vm_start();
trace_colo_vm_state_change("stop", "run");

10
migration/migration.c
View File

@ -386,6 +386,7 @@ static void process_incoming_migration_co(void *opaque)
MigrationIncomingState *mis = migration_incoming_get_current();
PostcopyState ps;
int ret;
Error *local_err = NULL;
assert(mis->from_src_file);
mis->migration_incoming_co = qemu_coroutine_self();
@ -418,6 +419,15 @@ static void process_incoming_migration_co(void *opaque)
/* we get COLO info, and know if we are in COLO mode */
if (!ret && migration_incoming_enable_colo()) {
/* Make sure all file formats flush their mutable metadata */
bdrv_invalidate_cache_all(&local_err);
if (local_err) {
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_FAILED);
error_report_err(local_err);
exit(EXIT_FAILURE);
}
qemu_thread_create(&mis->colo_incoming_thread, "COLO incoming",
colo_process_incoming_thread, mis, QEMU_THREAD_JOINABLE);
mis->have_colo_incoming_thread = true;