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device_mapper: deactive new nodes when load fails
When node loading fails, there is not much the caller can do, since there is 'unknown' set of devices preloaded. Only suspend during preload knows future precommitted 'metadata', so it's non-trivial to drop 'preloaded' entries with any later call. However dm tree tracks newly loaded entries - so in this case it may simplify the recovery path by dropping preloaded entries so they are not leaked in the DM table.
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@ -2877,8 +2877,14 @@ int dm_tree_preload_children(struct dm_tree_node *dnode,
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* insufficient to remove those - only the node
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* encountering the table load failure is removed.
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*/
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if (node_created && !_remove_node(child))
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return_0;
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if (node_created) {
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if (!_remove_node(child))
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return_0;
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if (!dm_udev_wait(dm_tree_get_cookie(dnode)))
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stack;
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dm_tree_set_cookie(dnode, 0);
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(void) _dm_tree_revert_activated(child);
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}
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return_0;
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}
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