Documentation/ABI/testing/sysfs-fs-nilfs2

   1
   2 What:           /sys/fs/nilfs2/features/revision
   3 Date:           April 2014
   4 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
   5 Description:
   6                 Show current revision of NILFS file system driver.
   7                 This value informs about file system revision that
   8                 driver is ready to support.
   9
  10 What:           /sys/fs/nilfs2/features/README
  11 Date:           April 2014
  12 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  13 Description:
  14                 Describe attributes of /sys/fs/nilfs2/features group.
  15
  16 What:           /sys/fs/nilfs2/<device>/revision
  17 Date:           April 2014
  18 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  19 Description:
  20                 Show NILFS file system revision on volume.
  21                 This value informs about metadata structures'
  22                 revision on mounted volume.
  23
  24 What:           /sys/fs/nilfs2/<device>/blocksize
  25 Date:           April 2014
  26 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  27 Description:
  28                 Show volume's block size in bytes.
  29
  30 What:           /sys/fs/nilfs2/<device>/device_size
  31 Date:           April 2014
  32 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  33 Description:
  34                 Show volume size in bytes.
  35
  36 What:           /sys/fs/nilfs2/<device>/free_blocks
  37 Date:           April 2014
  38 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  39 Description:
  40                 Show count of free blocks on volume.
  41
  42 What:           /sys/fs/nilfs2/<device>/uuid
  43 Date:           April 2014
  44 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  45 Description:
  46                 Show volume's UUID (Universally Unique Identifier).
  47
  48 What:           /sys/fs/nilfs2/<device>/volume_name
  49 Date:           April 2014
  50 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  51 Description:
  52                 Show volume's label.
  53
  54 What:           /sys/fs/nilfs2/<device>/README
  55 Date:           April 2014
  56 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  57 Description:
  58                 Describe attributes of /sys/fs/nilfs2/<device> group.
  59
  60 What:           /sys/fs/nilfs2/<device>/superblock/sb_write_time
  61 Date:           April 2014
  62 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  63 Description:
  64                 Show last write time of super block in human-readable
  65                 format.
  66
  67 What:           /sys/fs/nilfs2/<device>/superblock/sb_write_time_secs
  68 Date:           April 2014
  69 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  70 Description:
  71                 Show last write time of super block in seconds.
  72
  73 What:           /sys/fs/nilfs2/<device>/superblock/sb_write_count
  74 Date:           April 2014
  75 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  76 Description:
  77                 Show current write count of super block.
  78
  79 What:           /sys/fs/nilfs2/<device>/superblock/sb_update_frequency
  80 Date:           April 2014
  81 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  82 Description:
  83                 Show/Set interval of periodical update of superblock
  84                 (in seconds).
  85
  86 What:           /sys/fs/nilfs2/<device>/superblock/README
  87 Date:           April 2014
  88 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  89 Description:
  90                 Describe attributes of /sys/fs/nilfs2/<device>/superblock
  91                 group.
  92
  93 What:           /sys/fs/nilfs2/<device>/segctor/last_pseg_block
  94 Date:           April 2014
  95 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
  96 Description:
  97                 Show start block number of the latest segment.
  98
  99 What:           /sys/fs/nilfs2/<device>/segctor/last_seg_sequence
 100 Date:           April 2014
 101 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 102 Description:
 103                 Show sequence value of the latest segment.
 104
 105 What:           /sys/fs/nilfs2/<device>/segctor/last_seg_checkpoint
 106 Date:           April 2014
 107 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 108 Description:
 109                 Show checkpoint number of the latest segment.
 110
 111 What:           /sys/fs/nilfs2/<device>/segctor/current_seg_sequence
 112 Date:           April 2014
 113 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 114 Description:
 115                 Show segment sequence counter.
 116
 117 What:           /sys/fs/nilfs2/<device>/segctor/current_last_full_seg
 118 Date:           April 2014
 119 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 120 Description:
 121                 Show index number of the latest full segment.
 122
 123 What:           /sys/fs/nilfs2/<device>/segctor/next_full_seg
 124 Date:           April 2014
 125 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 126 Description:
 127                 Show index number of the full segment index
 128                 to be used next.
 129
 130 What:           /sys/fs/nilfs2/<device>/segctor/next_pseg_offset
 131 Date:           April 2014
 132 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 133 Description:
 134                 Show offset of next partial segment in the current
 135                 full segment.
 136
 137 What:           /sys/fs/nilfs2/<device>/segctor/next_checkpoint
 138 Date:           April 2014
 139 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 140 Description:
 141                 Show next checkpoint number.
 142
 143 What:           /sys/fs/nilfs2/<device>/segctor/last_seg_write_time
 144 Date:           April 2014
 145 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 146 Description:
 147                 Show write time of the last segment in
 148                 human-readable format.
 149
 150 What:           /sys/fs/nilfs2/<device>/segctor/last_seg_write_time_secs
 151 Date:           April 2014
 152 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 153 Description:
 154                 Show write time of the last segment in seconds.
 155
 156 What:           /sys/fs/nilfs2/<device>/segctor/last_nongc_write_time
 157 Date:           April 2014
 158 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 159 Description:
 160                 Show write time of the last segment not for cleaner
 161                 operation in human-readable format.
 162
 163 What:           /sys/fs/nilfs2/<device>/segctor/last_nongc_write_time_secs
 164 Date:           April 2014
 165 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 166 Description:
 167                 Show write time of the last segment not for cleaner
 168                 operation in seconds.
 169
 170 What:           /sys/fs/nilfs2/<device>/segctor/dirty_data_blocks_count
 171 Date:           April 2014
 172 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 173 Description:
 174                 Show number of dirty data blocks.
 175
 176 What:           /sys/fs/nilfs2/<device>/segctor/README
 177 Date:           April 2014
 178 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 179 Description:
 180                 Describe attributes of /sys/fs/nilfs2/<device>/segctor
 181                 group.
 182
 183 What:           /sys/fs/nilfs2/<device>/segments/segments_number
 184 Date:           April 2014
 185 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 186 Description:
 187                 Show number of segments on a volume.
 188
 189 What:           /sys/fs/nilfs2/<device>/segments/blocks_per_segment
 190 Date:           April 2014
 191 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 192 Description:
 193                 Show number of blocks in segment.
 194
 195 What:           /sys/fs/nilfs2/<device>/segments/clean_segments
 196 Date:           April 2014
 197 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 198 Description:
 199                 Show count of clean segments.
 200
 201 What:           /sys/fs/nilfs2/<device>/segments/dirty_segments
 202 Date:           April 2014
 203 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 204 Description:
 205                 Show count of dirty segments.
 206
 207 What:           /sys/fs/nilfs2/<device>/segments/README
 208 Date:           April 2014
 209 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 210 Description:
 211                 Describe attributes of /sys/fs/nilfs2/<device>/segments
 212                 group.
 213
 214 What:           /sys/fs/nilfs2/<device>/checkpoints/checkpoints_number
 215 Date:           April 2014
 216 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 217 Description:
 218                 Show number of checkpoints on volume.
 219
 220 What:           /sys/fs/nilfs2/<device>/checkpoints/snapshots_number
 221 Date:           April 2014
 222 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 223 Description:
 224                 Show number of snapshots on volume.
 225
 226 What:           /sys/fs/nilfs2/<device>/checkpoints/last_seg_checkpoint
 227 Date:           April 2014
 228 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 229 Description:
 230                 Show checkpoint number of the latest segment.
 231
 232 What:           /sys/fs/nilfs2/<device>/checkpoints/next_checkpoint
 233 Date:           April 2014
 234 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 235 Description:
 236                 Show next checkpoint number.
 237
 238 What:           /sys/fs/nilfs2/<device>/checkpoints/README
 239 Date:           April 2014
 240 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 241 Description:
 242                 Describe attributes of /sys/fs/nilfs2/<device>/checkpoints
 243                 group.
 244
 245 What:           /sys/fs/nilfs2/<device>/mounted_snapshots/README
 246 Date:           April 2014
 247 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 248 Description:
 249                 Describe content of /sys/fs/nilfs2/<device>/mounted_snapshots
 250                 group.
 251
 252 What:           /sys/fs/nilfs2/<device>/mounted_snapshots/<id>/inodes_count
 253 Date:           April 2014
 254 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 255 Description:
 256                 Show number of inodes for snapshot.
 257
 258 What:           /sys/fs/nilfs2/<device>/mounted_snapshots/<id>/blocks_count
 259 Date:           April 2014
 260 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 261 Description:
 262                 Show number of blocks for snapshot.
 263
 264 What:           /sys/fs/nilfs2/<device>/mounted_snapshots/<id>/README
 265 Date:           April 2014
 266 Contact:        "Vyacheslav Dubeyko" <slava@dubeyko.com>
 267 Description:
 268                 Describe attributes of /sys/fs/nilfs2/<device>/mounted_snapshots/<id>
 269                 group.