caa05d49df
This patch adds creation of /sys/fs/nilfs2/<device>/superblock group. The superblock group contains attributes that describe superblock's details: (1) sb_write_time - show previous write time of super block in human-readable format. (2) sb_write_time_secs - show previous write time of super block in seconds. (3) sb_write_count - show write count of super block. (4) sb_update_frequency - show/set interval of periodical update of superblock (in seconds). You can set preferable frequency of superblock update by command: echo <value> > /sys/fs/nilfs2/<device>/superblock/sb_update_frequency Signed-off-by: Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Michael L. Semon <mlsemon35@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
92 lines
2.6 KiB
Plaintext
92 lines
2.6 KiB
Plaintext
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What: /sys/fs/nilfs2/features/revision
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show current revision of NILFS file system driver.
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This value informs about file system revision that
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driver is ready to support.
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What: /sys/fs/nilfs2/features/README
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Describe attributes of /sys/fs/nilfs2/features group.
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What: /sys/fs/nilfs2/<device>/revision
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show NILFS file system revision on volume.
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This value informs about metadata structures'
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revision on mounted volume.
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What: /sys/fs/nilfs2/<device>/blocksize
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show volume's block size in bytes.
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What: /sys/fs/nilfs2/<device>/device_size
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show volume size in bytes.
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What: /sys/fs/nilfs2/<device>/free_blocks
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show count of free blocks on volume.
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What: /sys/fs/nilfs2/<device>/uuid
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show volume's UUID (Universally Unique Identifier).
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What: /sys/fs/nilfs2/<device>/volume_name
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show volume's label.
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What: /sys/fs/nilfs2/<device>/README
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Describe attributes of /sys/fs/nilfs2/<device> group.
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What: /sys/fs/nilfs2/<device>/superblock/sb_write_time
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show last write time of super block in human-readable
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format.
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What: /sys/fs/nilfs2/<device>/superblock/sb_write_time_secs
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show last write time of super block in seconds.
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What: /sys/fs/nilfs2/<device>/superblock/sb_write_count
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show current write count of super block.
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What: /sys/fs/nilfs2/<device>/superblock/sb_update_frequency
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Show/Set interval of periodical update of superblock
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(in seconds).
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What: /sys/fs/nilfs2/<device>/superblock/README
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Date: April 2014
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Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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Description:
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Describe attributes of /sys/fs/nilfs2/<device>/superblock
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group.
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