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btrfs-progs: docs: update btrfs-quota manual page, more sections 

Add more overall sections.

Signed-off-by: David Sterba <dsterba@suse.com>
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David Sterba 2016-08-18 19:25:10 +02:00
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1 changed files with 17 additions and 1 deletions
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18
Documentation/btrfs-quota.asciidoc
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@ -16,7 +16,23 @@ of a btrfs filesystem. The quota groups (qgroups) are managed by the subcommand
`btrfs qgroup`(8).
NOTE: the qgroups are different than the traditional user quotas and designed
to track shared and exlusive data per-subvolume.
to track shared and exlusive data per-subvolume. Plese refer to the section
'HIERARCHICAL QUOTA GROUP CONCEPTS' for a detailed description.
PERFORMANCE IMPLICATIONS
~~~~~~~~~~~~~~~~~~~~~~~~
When the quotas are turned on, they affect all extent processing, taking a
performance hit. It is not recommended to turn on qgroups unless the user
intends to actually use them.
STABILITY STATUS
~~~~~~~~~~~~~~~~
The qgroup implementation has turned out to be quite difficult as it affects
the core of the filesystem operation. The users have hit various corner cases
over time, eg. wrong accounting or system instability. The situation is
gradually improving but currently (4.7) there are still issues found and fixed.
HIERARCHICAL QUOTA GROUP CONCEPTS
---------------------------------