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migration: poll the cm event for destination qemu 

The destination qemu only poll the comp_channel->fd in
qemu_rdma_wait_comp_channel. But when source qemu disconnnect
the rdma connection, the destination qemu should be notified.

Signed-off-by: Lidong Chen <lidongchen@tencent.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Lidong Chen 2018-08-06 21:29:35 +08:00 committed by Juan Quintela
parent c50055ae7c
commit 923709896b
2 changed files with 33 additions and 2 deletions
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3
migration/migration.c
View File

@ -390,6 +390,7 @@ static void process_incoming_migration_co(void *opaque)
int ret;
assert(mis->from_src_file);
mis->migration_incoming_co = qemu_coroutine_self();
mis->largest_page_size = qemu_ram_pagesize_largest();
postcopy_state_set(POSTCOPY_INCOMING_NONE);
migrate_set_state(&mis->state, MIGRATION_STATUS_NONE,
@ -419,7 +420,6 @@ 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()) {
mis->migration_incoming_co = qemu_coroutine_self();
qemu_thread_create(&mis->colo_incoming_thread, "COLO incoming",
colo_process_incoming_thread, mis, QEMU_THREAD_JOINABLE);
mis->have_colo_incoming_thread = true;
@ -443,6 +443,7 @@ static void process_incoming_migration_co(void *opaque)
}
mis->bh = qemu_bh_new(process_incoming_migration_bh, mis);
qemu_bh_schedule(mis->bh);
mis->migration_incoming_co = NULL;
}
static void migration_incoming_setup(QEMUFile *f)

32
migration/rdma.c
View File

@ -3226,6 +3226,35 @@ err:
static void rdma_accept_incoming_migration(void *opaque);
static void rdma_cm_poll_handler(void *opaque)
{
RDMAContext *rdma = opaque;
int ret;
struct rdma_cm_event *cm_event;
MigrationIncomingState *mis = migration_incoming_get_current();
ret = rdma_get_cm_event(rdma->channel, &cm_event);
if (ret) {
error_report("get_cm_event failed %d", errno);
return;
}
rdma_ack_cm_event(cm_event);
if (cm_event->event == RDMA_CM_EVENT_DISCONNECTED ||
cm_event->event == RDMA_CM_EVENT_DEVICE_REMOVAL) {
error_report("receive cm event, cm event is %d", cm_event->event);
rdma->error_state = -EPIPE;
if (rdma->return_path) {
rdma->return_path->error_state = -EPIPE;
}
if (mis->migration_incoming_co) {
qemu_coroutine_enter(mis->migration_incoming_co);
}
return;
}
}
static int qemu_rdma_accept(RDMAContext *rdma)
{
RDMACapabilities cap;
@ -3326,7 +3355,8 @@ static int qemu_rdma_accept(RDMAContext *rdma)
NULL,
(void *)(intptr_t)rdma->return_path);
} else {
qemu_set_fd_handler(rdma->channel->fd, NULL, NULL, NULL);
qemu_set_fd_handler(rdma->channel->fd, rdma_cm_poll_handler,
NULL, rdma);
}
ret = rdma_accept(rdma->cm_id, &conn_param);