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btrfs-progs: docs: update fi du regarding recursion 

State that 'fi du' does descend to subvolumes.

Issue: #185
Signed-off-by: David Sterba <dsterba@suse.com>
master
David Sterba 2019-07-02 15:24:32 +02:00
parent 534c296121
commit 8d3da70b36
1 changed files with 3 additions and 2 deletions
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5
Documentation/btrfs-filesystem.asciidoc
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@ -146,8 +146,9 @@ described below.
+ +
Each argument to 'btrfs filesystem du' will have a 'set shared' value Each argument to 'btrfs filesystem du' will have a 'set shared' value
calculated for it. We define each 'set' as those files found by a calculated for it. We define each 'set' as those files found by a
recursive search of an argument. The 'set shared' value recursive search of an argument (recursion descends to subvolumes but not
then is a sum of all shared space referenced by the set. mount points). The 'set shared' value then is a sum of all shared space
referenced by the set.
+ +
'set shared' takes into account overlapping shared extents, hence it 'set shared' takes into account overlapping shared extents, hence it
isn't as simple as adding up shared extents. isn't as simple as adding up shared extents.