block: Remove BB interface from blockdev-add/del
With this patch, blockdev-add always works on a node level, i.e. it
creates a BDS, but no BB. Consequently, x-blockdev-del doesn't need the
'device' option any more, but 'node-name' becomes mandatory.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
diff --git a/blockdev.c b/blockdev.c
index 17c2671..29c6561 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2844,7 +2844,7 @@
bs = bdrv_find_node(id);
if (bs) {
- qmp_x_blockdev_del(false, NULL, true, id, &local_err);
+ qmp_x_blockdev_del(id, &local_err);
if (local_err) {
error_report_err(local_err);
}
@@ -3827,7 +3827,6 @@
void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
{
BlockDriverState *bs;
- BlockBackend *blk = NULL;
QObject *obj;
Visitor *v = qmp_output_visitor_new(&obj);
QDict *qdict;
@@ -3859,37 +3858,21 @@
qdict_flatten(qdict);
- if (options->has_id) {
- blk = blockdev_init(NULL, qdict, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- goto fail;
- }
-
- bs = blk_bs(blk);
- } else {
- if (!qdict_get_try_str(qdict, "node-name")) {
- error_setg(errp, "'id' and/or 'node-name' need to be specified for "
- "the root node");
- goto fail;
- }
-
- bs = bds_tree_init(qdict, errp);
- if (!bs) {
- goto fail;
- }
-
- QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
+ if (!qdict_get_try_str(qdict, "node-name")) {
+ error_setg(errp, "'node-name' must be specified for the root node");
+ goto fail;
}
+ bs = bds_tree_init(qdict, errp);
+ if (!bs) {
+ goto fail;
+ }
+
+ QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
+
if (bs && bdrv_key_required(bs)) {
- if (blk) {
- monitor_remove_blk(blk);
- blk_unref(blk);
- } else {
- QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
- bdrv_unref(bs);
- }
+ QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
+ bdrv_unref(bs);
error_setg(errp, "blockdev-add doesn't support encrypted devices");
goto fail;
}
@@ -3898,81 +3881,42 @@
visit_free(v);
}
-void qmp_x_blockdev_del(bool has_id, const char *id,
- bool has_node_name, const char *node_name, Error **errp)
+void qmp_x_blockdev_del(const char *node_name, Error **errp)
{
AioContext *aio_context;
- BlockBackend *blk;
BlockDriverState *bs;
- if (has_id && has_node_name) {
- error_setg(errp, "Only one of id and node-name must be specified");
- return;
- } else if (!has_id && !has_node_name) {
- error_setg(errp, "No block device specified");
+ bs = bdrv_find_node(node_name);
+ if (!bs) {
+ error_setg(errp, "Cannot find node %s", node_name);
return;
}
-
- if (has_id) {
- /* blk_by_name() never returns a BB that is not owned by the monitor */
- blk = blk_by_name(id);
- if (!blk) {
- error_setg(errp, "Cannot find block backend %s", id);
- return;
- }
- if (blk_legacy_dinfo(blk)) {
- error_setg(errp, "Deleting block backend added with drive-add"
- " is not supported");
- return;
- }
- if (blk_get_refcnt(blk) > 1) {
- error_setg(errp, "Block backend %s is in use", id);
- return;
- }
- bs = blk_bs(blk);
- aio_context = blk_get_aio_context(blk);
- } else {
- blk = NULL;
- bs = bdrv_find_node(node_name);
- if (!bs) {
- error_setg(errp, "Cannot find node %s", node_name);
- return;
- }
- if (bdrv_has_blk(bs)) {
- error_setg(errp, "Node %s is in use", node_name);
- return;
- }
- aio_context = bdrv_get_aio_context(bs);
+ if (bdrv_has_blk(bs)) {
+ error_setg(errp, "Node %s is in use", node_name);
+ return;
}
-
+ aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
- if (bs) {
- if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) {
- goto out;
- }
-
- if (!blk && !QTAILQ_IN_USE(bs, monitor_list)) {
- error_setg(errp, "Node %s is not owned by the monitor",
- bs->node_name);
- goto out;
- }
-
- if (bs->refcnt > 1) {
- error_setg(errp, "Block device %s is in use",
- bdrv_get_device_or_node_name(bs));
- goto out;
- }
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) {
+ goto out;
}
- if (blk) {
- monitor_remove_blk(blk);
- blk_unref(blk);
- } else {
- QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
- bdrv_unref(bs);
+ if (!bs->monitor_list.tqe_prev) {
+ error_setg(errp, "Node %s is not owned by the monitor",
+ bs->node_name);
+ goto out;
}
+ if (bs->refcnt > 1) {
+ error_setg(errp, "Block device %s is in use",
+ bdrv_get_device_or_node_name(bs));
+ goto out;
+ }
+
+ QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
+ bdrv_unref(bs);
+
out:
aio_context_release(aio_context);
}
