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Originally print-tree uses depth first search to print trees.
This works fine until we reach 3 level trees (root node level is 2).
For tall trees whose root level is 2 or higher, DFS will mix nodes and
leaves like the following example:
Level 2 A
/ \
Level 1 B C
/ | | \
Level 0 D E F G
DFS will cause the following output sequence:
A B D E C F G
Which in term of node/leave is:
N N L L N L L
Such mixed node/leave result is sometimes hard for human to read.
This patch will introduce 2 new options, --bfs and --dfs.
--dfs: keeps the original output sequence, and to keep things
compatible it's the default behavior.
--bfs: uses breadth-first search, and will cause better output
sequence like:
A B C D E F G
Which in term of node/leave is:
N N N L L L L
Much better sorted and may become default in the future.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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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>
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Signed-off-by: Nicholas D Steeves <nsteeves@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: Nicholas D Steeves <nsteeves@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Some tools (check, select-super, dump-super) can use the alternate
superblocks, but the options are not consistent. To make it less
confusing, change the meaning of option -s in 'dump-super' to specify
the superblock copy, instead of taking the offset.
Though this is a change in UI, the old usage is detected and the result
would be the same, no breakage in existing scripts.
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: Alexander Fougner <fougner89@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: David Sterba <dsterba@suse.com>
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The command name is 'dump-super', move the section to it's alphabetical
order.
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: Alexander Fougner <fougner89@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: David Sterba <dsterba@suse.com>
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For practical purposes teach -t about the human readable names of the
trees in addition to the numerical id. The name syntax is flexible.
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: Alexander Fougner <fougner89@gmail.com>
[ minor formatting updates ]
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: Alexander Fougner <fougner89@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Signed-off-by: David Sterba <dsterba@suse.com>
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Previously in 'filesystem resize get_min_size', now
'inspect-internal min-dev-size'. We'd like to avoid cluttering the
'resize' syntax further.
The test has been updated to exercise the new option.
Signed-off-by: David Sterba <dsterba@suse.com>
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A few minor benefits:
* editors set highliting according to the extensions
* web access to the git repository (github) renders the .asciidoc
files:
* we can link to them from the wiki
* the files are editable via browser and such editations can be
submitted for merge easily
Signed-off-by: David Sterba <dsterba@suse.cz>
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