void qmp_cont(Error **errp)
{
Error *local_err = NULL;
BlockBackend *blk;
BlockDriverState *bs;
if (runstate_needs_reset()) {
error_setg(errp, "Resetting the Virtual Machine is required");
return;
} else if (runstate_check(RUN_STATE_SUSPENDED)) {
return;
}
for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
blk_iostatus_reset(blk);
}
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
bdrv_add_key(bs, NULL, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
}
if (runstate_check(RUN_STATE_INMIGRATE)) {
autostart = 1;
} else {
vm_start();
}
}
void qmp_cont(Error **errp)
{
Error *local_err = NULL;
BlockBackend *blk;
BlockDriverState *bs;
/* if there is a dump in background, we should wait until the dump
* finished */
if (dump_in_progress()) {
error_setg(errp, "There is a dump in process, please wait.");
return;
}
if (runstate_needs_reset()) {
error_setg(errp, "Resetting the Virtual Machine is required");
return;
} else if (runstate_check(RUN_STATE_SUSPENDED)) {
return;
}
for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
blk_iostatus_reset(blk);
}
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
bdrv_add_key(bs, NULL, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
}
/* Continuing after completed migration. Images have been inactivated to
* allow the destination to take control. Need to get control back now. */
if (runstate_check(RUN_STATE_FINISH_MIGRATE) ||
runstate_check(RUN_STATE_POSTMIGRATE))
{
bdrv_invalidate_cache_all(&local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
}
if (runstate_check(RUN_STATE_INMIGRATE)) {
autostart = 1;
} else {
vm_start();
}
}
int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn,
BlockDriverState *vm_state_bs,
uint64_t vm_state_size,
BlockDriverState **first_bad_bs)
{
int err = 0;
BlockDriverState *bs = NULL;
while (err == 0 && (bs = bdrv_next(bs))) {
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
if (bs == vm_state_bs) {
sn->vm_state_size = vm_state_size;
err = bdrv_snapshot_create(bs, sn);
} else if (bdrv_can_snapshot(bs)) {
sn->vm_state_size = 0;
err = bdrv_snapshot_create(bs, sn);
}
aio_context_release(ctx);
}
*first_bad_bs = bs;
return err;
}
BlockDriverState *bdrv_all_find_vmstate_bs(void)
{
bool not_found = true;
BlockDriverState *bs = NULL;
while (not_found && (bs = bdrv_next(bs))) {
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
not_found = !bdrv_can_snapshot(bs);
aio_context_release(ctx);
}
return bs;
}
BlockStatsList *qmp_query_blockstats(Error **errp)
{
BlockStatsList *head = NULL, **p_next = &head;
BlockDriverState *bs = NULL;
while ((bs = bdrv_next(bs))) {
BlockStatsList *info = g_malloc0(sizeof(*info));
info->value = bdrv_query_stats(bs);
*p_next = info;
p_next = &info->next;
}
return head;
}
int bdrv_all_goto_snapshot(const char *name, BlockDriverState **first_bad_bs)
{
int err = 0;
BlockDriverState *bs = NULL;
while (err == 0 && (bs = bdrv_next(bs))) {
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
if (bdrv_can_snapshot(bs)) {
err = bdrv_snapshot_goto(bs, name);
}
aio_context_release(ctx);
}
*first_bad_bs = bs;
return err;
}
bool bdrv_all_can_snapshot(BlockDriverState **first_bad_bs)
{
bool ok = true;
BlockDriverState *bs = NULL;
while (ok && (bs = bdrv_next(bs))) {
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
if (bdrv_is_inserted(bs) && !bdrv_is_read_only(bs)) {
ok = bdrv_can_snapshot(bs);
}
aio_context_release(ctx);
}
*first_bad_bs = bs;
return ok;
}
void iothread_stop_all(void)
{
Object *container = object_get_objects_root();
BlockDriverState *bs;
BdrvNextIterator it;
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
AioContext *ctx = bdrv_get_aio_context(bs);
if (ctx == qemu_get_aio_context()) {
continue;
}
aio_context_acquire(ctx);
bdrv_set_aio_context(bs, qemu_get_aio_context());
aio_context_release(ctx);
}
object_child_foreach(container, iothread_stop, NULL);
}
BlockStatsList *qmp_query_blockstats(Error **errp)
{
BlockStatsList *head = NULL, **p_next = &head;
BlockDriverState *bs = NULL;
while ((bs = bdrv_next(bs))) {
BlockStatsList *info = g_malloc0(sizeof(*info));
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
info->value = bdrv_query_stats(bs);
aio_context_release(ctx);
*p_next = info;
p_next = &info->next;
}
return head;
}
int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bad_bs,
Error **err)
{
int ret = 0;
BlockDriverState *bs = NULL;
QEMUSnapshotInfo sn1, *snapshot = &sn1;
while (ret == 0 && (bs = bdrv_next(bs))) {
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
if (bdrv_can_snapshot(bs) &&
bdrv_snapshot_find(bs, snapshot, name) >= 0) {
ret = bdrv_snapshot_delete_by_id_or_name(bs, name, err);
}
aio_context_release(ctx);
}
*first_bad_bs = bs;
return ret;
}
BlockInfoList *qmp_query_block(Error **errp)
{
BlockInfoList *head = NULL, **p_next = &head;
BlockDriverState *bs = NULL;
Error *local_err = NULL;
while ((bs = bdrv_next(bs))) {
BlockInfoList *info = g_malloc0(sizeof(*info));
bdrv_query_info(bs, &info->value, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto err;
}
*p_next = info;
p_next = &info->next;
}
return head;
err:
qapi_free_BlockInfoList(head);
return NULL;
}
BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
bool query_nodes,
Error **errp)
{
BlockStatsList *head = NULL, **p_next = &head;
BlockDriverState *bs = NULL;
/* Just to be safe if query_nodes is not always initialized */
query_nodes = has_query_nodes && query_nodes;
while ((bs = query_nodes ? bdrv_next_node(bs) : bdrv_next(bs))) {
BlockStatsList *info = g_malloc0(sizeof(*info));
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
info->value = bdrv_query_stats(bs, !query_nodes);
aio_context_release(ctx);
*p_next = info;
p_next = &info->next;
}
return head;
}
