This new communication path will be used for returning messages
from destination to source.
Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
Signed-off-by: Li Zhijian <lizhij...@cn.fujitsu.com>
Cc: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
v11:
- Rebase master to use qemu_file_get_return_path() for opening return path
v10:
- fix the the error log (Dave's suggestion).
---
migration/colo.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/migration/colo.c b/migration/colo.c
index 6880aa0..0ab9618 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -36,6 +36,15 @@ bool migration_incoming_in_colo_state(void)
static void colo_process_checkpoint(MigrationState *s)
{
+ int ret = 0;
+
+ s->rp_state.from_dst_file = qemu_file_get_return_path(s->to_dst_file);
+ if (!s->rp_state.from_dst_file) {
+ ret = -EINVAL;
+ error_report("Open QEMUFile from_dst_file failed");
+ goto out;
+ }
+
qemu_mutex_lock_iothread();
vm_start();
qemu_mutex_unlock_iothread();
@@ -43,8 +52,16 @@ static void colo_process_checkpoint(MigrationState *s)
/*TODO: COLO checkpoint savevm loop*/
+out:
+ if (ret < 0) {
+ error_report("%s: %s", __func__, strerror(-ret));
+ }
migrate_set_state(&s->state, MIGRATION_STATUS_COLO,
MIGRATION_STATUS_COMPLETED);
+
+ if (s->rp_state.from_dst_file) {
+ qemu_fclose(s->rp_state.from_dst_file);
+ }
}
void migrate_start_colo_process(MigrationState *s)
@@ -59,12 +76,34 @@ void migrate_start_colo_process(MigrationState *s)
void *colo_process_incoming_thread(void *opaque)
{
MigrationIncomingState *mis = opaque;
+ int ret = 0;
migrate_set_state(&mis->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_COLO);
+ mis->to_src_file = qemu_file_get_return_path(mis->from_src_file);
+ if (!mis->to_src_file) {
+ ret = -EINVAL;
+ error_report("colo incoming thread: Open QEMUFile to_src_file failed");
+ goto out;
+ }
+ /* Note: We set the fd to unblocked in migration incoming coroutine,
+ * But here we are in the colo incoming thread, so it is ok to set the
+ * fd back to blocked.
+ */
+ qemu_set_block(qemu_get_fd(mis->from_src_file));
+
/* TODO: COLO checkpoint restore loop */
+out:
+ if (ret < 0) {
+ error_report("colo incoming thread will exit, detect error: %s",
+ strerror(-ret));
+ }
+
+ if (mis->to_src_file) {
+ qemu_fclose(mis->to_src_file);
+ }
migration_incoming_exit_colo();
return NULL;
--
1.8.3.1
