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

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

The <device> group contains attributes that describe file
system partition's details:
(1) revision - show NILFS file system revision.
(2) blocksize - show volume block size in bytes.
(3) device_size - show volume size in bytes.
(4) free_blocks - show count of free blocks on volume.
(5) uuid - show volume's UUID.
(6) volume_name - show volume's name.

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 14:20:39 -07:00 • committed by Linus Torvalds
commit da7141fb78
4 changed files with 238 additions and 0 deletions
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44
Documentation/ABI/testing/sysfs-fs-nilfs2
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@ -12,3 +12,47 @@ Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Describe attributes of /sys/fs/nilfs2/features group.
What: /sys/fs/nilfs2/<device>/revision
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show NILFS file system revision on volume.
This value informs about metadata structures'
revision on mounted volume.
What: /sys/fs/nilfs2/<device>/blocksize
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show volume's block size in bytes.
What: /sys/fs/nilfs2/<device>/device_size
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show volume size in bytes.
What: /sys/fs/nilfs2/<device>/free_blocks
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show count of free blocks on volume.
What: /sys/fs/nilfs2/<device>/uuid
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show volume's UUID (Universally Unique Identifier).
What: /sys/fs/nilfs2/<device>/volume_name
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Show volume's label.
What: /sys/fs/nilfs2/<device>/README
Date: April 2014
Contact: "Vyacheslav Dubeyko" <[email protected]>
Description:
Describe attributes of /sys/fs/nilfs2/<device> group.