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nilfs2: add /sys/fs/nilfs2/<device>/checkpoints group

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This patch adds creation of /sys/fs/nilfs2/<device>/checkpoints
group.

The checkpoints group contains attributes that describe
details about volume's checkpoints:
(1) checkpoints_number - show number of checkpoints on volume.
(2) snapshots_number - show number of snapshots on volume.
(3) last_seg_checkpoint - show checkpoint number of the latest segment.
(4) next_checkpoint - show next checkpoint number.

Signed-off-by: Vyacheslav Dubeyko <[email protected]>
Cc: Vyacheslav Dubeyko <[email protected]>
Cc: Ryusuke Konishi <[email protected]>
Cc: Michael L. Semon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Vyacheslav Dubeyko 2014-08-08 14:20:48 -07:00 • committed by Linus Torvalds
commit 02a0ba1c60
3 changed files with 167 additions and 1 deletions
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31
Documentation/ABI/testing/sysfs-fs-nilfs2
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@ -210,3 +210,34 @@ Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Describe attributes of /sys/fs/nilfs2/<device>/segments
group.
What: /sys/fs/nilfs2/<device>/checkpoints/checkpoints_number
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show number of checkpoints on volume.
What: /sys/fs/nilfs2/<device>/checkpoints/snapshots_number
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show number of snapshots on volume.
What: /sys/fs/nilfs2/<device>/checkpoints/last_seg_checkpoint
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show checkpoint number of the latest segment.
What: /sys/fs/nilfs2/<device>/checkpoints/next_checkpoint
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show next checkpoint number.
What: /sys/fs/nilfs2/<device>/checkpoints/README
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Describe attributes of /sys/fs/nilfs2/<device>/checkpoints
group.