What:  /sys/fs/nilfs2/features/revision
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show current revision of NILFS file system driver.
  This value informs about file system revision that
  driver is ready to support.

What:  /sys/fs/nilfs2/features/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/features group.

What:  /sys/fs/nilfs2/<device>/revision
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
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" <slava@dubeyko.com>
Description:
  Show volume's block size in bytes.

What:  /sys/fs/nilfs2/<device>/device_size
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show volume size in bytes.

What:  /sys/fs/nilfs2/<device>/free_blocks
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show count of free blocks on volume.

What:  /sys/fs/nilfs2/<device>/uuid
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show volume's UUID (Universally Unique Identifier).

What:  /sys/fs/nilfs2/<device>/volume_name
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show volume's label.

What:  /sys/fs/nilfs2/<device>/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/<device> group.

What:  /sys/fs/nilfs2/<device>/superblock/sb_write_time
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show last write time of super block in human-readable
  format.

What:  /sys/fs/nilfs2/<device>/superblock/sb_write_time_secs
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show last write time of super block in seconds.

What:  /sys/fs/nilfs2/<device>/superblock/sb_write_count
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show current write count of super block.

What:  /sys/fs/nilfs2/<device>/superblock/sb_update_frequency
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show/Set interval of periodical update of superblock
  (in seconds).

What:  /sys/fs/nilfs2/<device>/superblock/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/<device>/superblock
  group.

What:  /sys/fs/nilfs2/<device>/segctor/last_pseg_block
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show start block number of the latest segment.

What:  /sys/fs/nilfs2/<device>/segctor/last_seg_sequence
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show sequence value of the latest segment.

What:  /sys/fs/nilfs2/<device>/segctor/last_seg_checkpoint
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show checkpoint number of the latest segment.

What:  /sys/fs/nilfs2/<device>/segctor/current_seg_sequence
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show segment sequence counter.

What:  /sys/fs/nilfs2/<device>/segctor/current_last_full_seg
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show index number of the latest full segment.

What:  /sys/fs/nilfs2/<device>/segctor/next_full_seg
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show index number of the full segment index
  to be used next.

What:  /sys/fs/nilfs2/<device>/segctor/next_pseg_offset
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show offset of next partial segment in the current
  full segment.

What:  /sys/fs/nilfs2/<device>/segctor/next_checkpoint
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show next checkpoint number.

What:  /sys/fs/nilfs2/<device>/segctor/last_seg_write_time
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show write time of the last segment in
  human-readable format.

What:  /sys/fs/nilfs2/<device>/segctor/last_seg_write_time_secs
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show write time of the last segment in seconds.

What:  /sys/fs/nilfs2/<device>/segctor/last_nongc_write_time
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show write time of the last segment not for cleaner
  operation in human-readable format.

What:  /sys/fs/nilfs2/<device>/segctor/last_nongc_write_time_secs
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show write time of the last segment not for cleaner
  operation in seconds.

What:  /sys/fs/nilfs2/<device>/segctor/dirty_data_blocks_count
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of dirty data blocks.

What:  /sys/fs/nilfs2/<device>/segctor/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/<device>/segctor
  group.

What:  /sys/fs/nilfs2/<device>/segments/segments_number
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of segments on a volume.

What:  /sys/fs/nilfs2/<device>/segments/blocks_per_segment
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of blocks in segment.

What:  /sys/fs/nilfs2/<device>/segments/clean_segments
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show count of clean segments.

What:  /sys/fs/nilfs2/<device>/segments/dirty_segments
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show count of dirty segments.

What:  /sys/fs/nilfs2/<device>/segments/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/<device>/segments
  group.

What:  /sys/fs/nilfs2/<device>/checkpoints/checkpoints_number
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of checkpoints on volume.

What:  /sys/fs/nilfs2/<device>/checkpoints/snapshots_number
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of snapshots on volume.

What:  /sys/fs/nilfs2/<device>/checkpoints/last_seg_checkpoint
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show checkpoint number of the latest segment.

What:  /sys/fs/nilfs2/<device>/checkpoints/next_checkpoint
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show next checkpoint number.

What:  /sys/fs/nilfs2/<device>/checkpoints/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/<device>/checkpoints
  group.

What:  /sys/fs/nilfs2/<device>/mounted_snapshots/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe content of /sys/fs/nilfs2/<device>/mounted_snapshots
  group.

What:  /sys/fs/nilfs2/<device>/mounted_snapshots/<id>/inodes_count
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of inodes for snapshot.

What:  /sys/fs/nilfs2/<device>/mounted_snapshots/<id>/blocks_count
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Show number of blocks for snapshot.

What:  /sys/fs/nilfs2/<device>/mounted_snapshots/<id>/README
Date:  April 2014
Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com>
Description:
  Describe attributes of /sys/fs/nilfs2/<device>/mounted_snapshots/<id>
  group.