When debuging with "btrfs inspect dump-tree", it's not that handy if we
want to iterate all child tree blocks starting from a specified block.
-b can only print a single block, while without -b "btrfs inspect dump-tree"
will need extra tree roots fulfilled to continue, which is not possible
for a damaged filesystem.
Add a new option --follow to iterate a sub-tree starting from block
specified by --block.
Signed-off-by: Qu Wenruo <wqu@suse.com>
[ remove the short option for now ]
Signed-off-by: David Sterba <dsterba@suse.com>
print only the uuid tree information, empty output if the tree does not exist
-b <block_num>::::
print info of the specified block only
print only the uuid tree information, empty output if the tree does not exist
-b <block_num>::::
print info of the specified block only
+--follow::::
+use with '-b', print all children tree blocks of '<block_num>'
-t <tree_id>::::
print only the tree with the specified ID, where the ID can be numerical or
common name in a flexible human readable form
-t <tree_id>::::
print only the tree with the specified ID, where the ID can be numerical or
common name in a flexible human readable form
"-u|--uuid print only the uuid tree",
"-b|--block <block_num> print info from the specified block only",
"-t|--tree <tree_id> print only tree with the given id (string or number)",
"-u|--uuid print only the uuid tree",
"-b|--block <block_num> print info from the specified block only",
"-t|--tree <tree_id> print only tree with the given id (string or number)",
+ "--follow use with -b, to show all children tree blocks of <block_num>",
u64 block_only = 0;
struct btrfs_root *tree_root_scan;
u64 tree_id = 0;
u64 block_only = 0;
struct btrfs_root *tree_root_scan;
u64 tree_id = 0;
+ enum { GETOPT_VAL_FOLLOW = 256 };
static const struct option long_options[] = {
{ "extents", no_argument, NULL, 'e'},
{ "device", no_argument, NULL, 'd'},
static const struct option long_options[] = {
{ "extents", no_argument, NULL, 'e'},
{ "device", no_argument, NULL, 'd'},
{ "uuid", no_argument, NULL, 'u'},
{ "block", required_argument, NULL, 'b'},
{ "tree", required_argument, NULL, 't'},
{ "uuid", no_argument, NULL, 'u'},
{ "block", required_argument, NULL, 'b'},
{ "tree", required_argument, NULL, 't'},
+ { "follow", no_argument, NULL, GETOPT_VAL_FOLLOW },
+ case GETOPT_VAL_FOLLOW:
+ follow = true;
+ break;
default:
usage(cmd_inspect_dump_tree_usage);
}
default:
usage(cmd_inspect_dump_tree_usage);
}
(unsigned long long)block_only);
goto close_root;
}
(unsigned long long)block_only);
goto close_root;
}
- btrfs_print_tree(root, leaf, 0);
+ btrfs_print_tree(root, leaf, follow);
free_extent_buffer(leaf);
goto close_root;
}
free_extent_buffer(leaf);
goto close_root;
}