Btrfs: ignore orphan qgroup relations

If a qgroup that has still assignments is deleted by the user, the corresponding relations are left in the tree. This leads to an unmountable filesystem. With this patch, those relations are simple ignored. Reported-by: Eric Hopper <[email protected]> Signed-off-by: Arne Jansen <[email protected]> Signed-off-by: Chris Mason <[email protected]>
chewitt · Jan 22, 2013 · ff24858 · ff24858
1 parent 57ba86c
commit ff24858
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
@@ -379,6 +379,13 @@ int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info)
 
 		ret = add_relation_rb(fs_info, found_key.objectid,
 				      found_key.offset);
+		if (ret == -ENOENT) {
+			printk(KERN_WARNING
+				"btrfs: orphan qgroup relation 0x%llx->0x%llx\n",
+				(unsigned long long)found_key.objectid,
+				(unsigned long long)found_key.offset);
+			ret = 0;	/* ignore the error */
+		}
 		if (ret)
 			goto out;
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