291         error_setg(errp, "Can't set node '%s' to r/o with copy-on-read enabled",  in bdrv_can_set_read_only()
300         error_setg(errp, "Node '%s' is read only",  in bdrv_can_set_read_only()
311  * Returns 0 if the node is already read-only or it could switch the node to
314  * Returns -EACCES if the node is read-write and BDRV_O_AUTO_RDONLY is not set
315  * or bdrv_can_set_read_only() forbids making the node read-only. If @errmsg
754         error_setg(errp, "Block node '%s' is not opened", bs->filename);  in bdrv_co_delete_file()
1200     return g_strdup_printf("node '%s'", bdrv_get_node_name(parent));  in bdrv_child_get_parent_desc()
1270                "node is used as backing hd of '%s'",  in bdrv_backing_attach()
1378      * be probed by default (even when the node itself has BDRV_O_PROTOCOL  in bdrv_inherited_options()
1616         error_setg(errp, "Invalid node-name: '%s'", node_name);  in bdrv_assign_node_name()
1622         error_setg(errp, "node-name=%s is conflicting with a device id",  in bdrv_assign_node_name()
1627     /* takes care of avoiding duplicates node names */  in bdrv_assign_node_name()
1629         error_setg(errp, "Duplicate nodes with node-name='%s'", node_name);  in bdrv_assign_node_name()
1633     /* Make sure that the node name isn't truncated */  in bdrv_assign_node_name()
1635         error_setg(errp, "Node name too long");  in bdrv_assign_node_name()
1639     /* copy node name into the bs and insert it into the graph list */  in bdrv_assign_node_name()
1737  * Create and open a block node.
1775 /* Create and open a block node. */
1788             .name = "node-name",
1790             .help = "Node name of the block device node",
1795             .help = "Block driver to use for the node",
1810             .help = "Node is activated",
1815             .help = "Node is opened in read-only mode",
1820             .help = "Node can become read-only if opening read-write fails",
1992     node_name = qemu_opt_get(opts, "node-name");  in bdrv_open_common()
2212  * child node.
2234     error_setg(errp, "Permission conflict on node '%s': permissions '%s' are "  in bdrv_a_allow_b()
2235                "both required by %s (uses node '%s' as '%s' child) and "  in bdrv_a_allow_b()
2236                "unshared by %s (uses node '%s' as '%s' child).",  in bdrv_a_allow_b()
2294  * On function start @list must be already topologically sorted and for any node
2295  * in the @list the whole subtree of the node must be in the @list as well. The
2525             error_setg(errp, "Block node is read-only");  in bdrv_node_refresh_perm()
2527             error_setg(errp, "Read-only block node '%s' cannot support "  in bdrv_node_refresh_perm()
2550     /* Check this node */  in bdrv_node_refresh_perm()
2613  * topologically sorted. It's not a problem if some node occurs in the @list
2928  * Replaces the node that a BdrvChild points to without updating permissions.
2942      * If we want to change the BdrvChild to point to a drained node as its new  in bdrv_replace_child_noperm()
2987      * is not drained, allow requests to come in only after the new node has  in bdrv_replace_child_noperm()
3096         error_setg(errp, "Permission '%s' unavailable on inactive node",  in bdrv_attach_child_common()
3323          * Update permissions for old node. We're just taking a parent away, so  in bdrv_root_unref_child()
3331          * node moves back to the main AioContext  in bdrv_root_unref_child()
3466  * If the respective child is already present (i.e. we're detaching a node),
3467  * that child node must be drained.
3495          * Node without drv is an object without a class :/. TODO: finally fix  in bdrv_set_file_or_backing_noperm()
3499         error_setg(errp, "Node corrupted");  in bdrv_set_file_or_backing_noperm()
3512         error_setg(errp, "Driver '%s' of node '%s' does not support backing "  in bdrv_set_file_or_backing_noperm()
3527             error_setg(errp, "Cannot set file child to format node without "  in bdrv_set_file_or_backing_noperm()
3825  * child of a node. A notable difference from bdrv_open_child() is that it
3852  * option inheritance to work. Existing callers use it for the root node.
4042              * parent->drv is not set yet because this node is opened for  in bdrv_open_inherit()
4044              * to be a format node.  in bdrv_open_inherit()
4119      * same BDS, which is why we put the node name back into options. */  in bdrv_open_inherit()
4307         "node-name", "discard", "cache.direct", "cache.no-flush",  in bdrv_reset_options_allowed()
4406      * 3. Inherited from parent node  in bdrv_reopen_queue_child()
4421     /* Inherit from parent node */  in bdrv_reopen_queue_child()
4492              * reference is null or points to a different node.  in bdrv_reopen_queue_child()
4701  * If 'backing' contains the node name of the backing file of
4704  * If 'backing' contains a different node name (or is null) then check
4798         error_setg(errp, "'%s' is a %s filter node that does not support a "  in bdrv_reopen_parse_file_or_backing()
4911     /* All other options (including node-name and driver) must be unchanged.  in bdrv_reopen_prepare()
4958         error_setg(errp, "Block format '%s' used by node '%s' "  in bdrv_reopen_prepare()
4986      * either a reference to an existing node (using its node name)  in bdrv_reopen_prepare()
5244      *   guest device -> node A -> further backing chain...  in should_update_child()
5247      * chain, so we first attach A as its backing node:  in should_update_child()
5249      *                   node B  in should_update_child()
5252      *   guest device -> node A -> further backing chain...  in should_update_child()
5259      *   guest device -> node B  in should_update_child()
5262      *                   node A -> further backing chain...  in should_update_child()
5264      * In general, when replacing a node A (c->bs) by a node B (@to),  in should_update_child()
5580  * Replace @bs by newly created block node.
5612     node_name = qdict_get_try_str(options, "node-name");  in bdrv_insert_node()
5622         error_prepend(errp, "Could not create node: ");  in bdrv_insert_node()
5641         error_prepend(errp, "Could not replace node: ");  in bdrv_insert_node()
5722  * Finds the first non-filter node above bs in the chain between
5723  * active and bs.  The returned node is either an immediate parent of
5905      * If 'top' is an implicit node (e.g. "commit_top") we should skip  in bdrv_drop_intermediate()
6141  * Return whether the given node supports compressed writes.
6237 /* This function is to find a node in the bs graph */
6301 static uintptr_t xdbg_graph_node_num(XDbgBlockGraphConstructor *gr, void *node)  in xdbg_graph_node_num()  argument
6303     uintptr_t ret = (uintptr_t)g_hash_table_lookup(gr->graph_nodes, node);  in xdbg_graph_node_num()
6314     g_hash_table_insert(gr->graph_nodes, node, (void *)ret);  in xdbg_graph_node_num()
6319 static void xdbg_graph_add_node(XDbgBlockGraphConstructor *gr, void *node,  in xdbg_graph_add_node()  argument
6326     n->id = xdbg_graph_node_num(gr, node);  in xdbg_graph_add_node()
6440     error_setg(errp, "Cannot find device=\'%s\' nor node-name=\'%s\'",  in bdrv_lookup_bs()
6511  * name associated. Since node and device names live in the same
6765              * directly against the backing node's filename.  in bdrv_find_backing_image()
7008      * Inactivating an already inactive node on user request is harmless, but if  in bdrv_inactivate_recurse()
7016     /* Inactivate this node */  in bdrv_inactivate_recurse()
7068         error_setg(errp, "Node has active parent node");  in bdrv_inactivate()
7074         error_setg_errno(errp, -ret, "Failed to inactivate node");  in bdrv_inactivate()
7228                                 "Node '%s' is busy: ",  in bdrv_op_is_blocked()
7497      * moving the node to a different AioContext. Read new_ctx only afterwards.  in bdrv_co_enter()
7743      * Run all callbacks collected in the recursion to switch every node's  in bdrv_try_change_aio_context_locked()
7830         error_setg(errp, "Node is ejected");  in bdrv_amend_options()
7844  * replaced by a node that always shows the same data as @bs.  This is
7885  * Check whether the given @node_name can be replaced by a node that
7892  * The result (whether the node can be replaced or not) is only valid
7903         error_setg(errp, "Failed to find node with node-name='%s'", node_name);  in check_to_replace_node()
7911     /* We don't want arbitrary node of the BDS chain to be replaced only the top  in check_to_replace_node()
7917         error_setg(errp, "Cannot replace '%s' by a node mirrored from '%s', "  in check_to_replace_node()
8184         error_setg(errp, "Node '%s' is ejected", bs->node_name);  in bdrv_dirname()
8218         error_setg(errp, "The node %s does not support adding a child",  in bdrv_add_child()
8243         error_setg(errp, "The node %s already has a parent",  in bdrv_add_child()
8263         error_setg(errp, "The node %s does not support removing a child",  in bdrv_del_child()
8275         error_setg(errp, "The node %s does not have a child named %s",  in bdrv_del_child()
8380  * Return the primary child of this node: For filters, that is the
8419              * not return a filter node that is not expected by the  in bdrv_do_skip_filters()