[root@cryo queue]# cat /proc/diskstats
   1    0 ram0 0 0 0 0 0 0 0 0 0 0 0
   1    1 ram1 0 0 0 0 0 0 0 0 0 0 0
   1    2 ram2 0 0 0 0 0 0 0 0 0 0 0
   1    3 ram3 0 0 0 0 0 0 0 0 0 0 0
   1    4 ram4 0 0 0 0 0 0 0 0 0 0 0
   1    5 ram5 0 0 0 0 0 0 0 0 0 0 0
   1    6 ram6 0 0 0 0 0 0 0 0 0 0 0
   1    7 ram7 0 0 0 0 0 0 0 0 0 0 0
   1    8 ram8 0 0 0 0 0 0 0 0 0 0 0
   1    9 ram9 0 0 0 0 0 0 0 0 0 0 0
   1   10 ram10 0 0 0 0 0 0 0 0 0 0 0
   1   11 ram11 0 0 0 0 0 0 0 0 0 0 0
   1   12 ram12 0 0 0 0 0 0 0 0 0 0 0
   1   13 ram13 0 0 0 0 0 0 0 0 0 0 0
   1   14 ram14 0 0 0 0 0 0 0 0 0 0 0
   1   15 ram15 0 0 0 0 0 0 0 0 0 0 0
   9    0 md0 0 0 0 0 0 0 0 0 0 0 0
   3    0 hda 391767 13261 6999842 5058188 3173247 1101102 38840722 369327672 4294604486 973546580 864470668
   3    1 hda1 610 5261 85 392
   3    2 hda2 28826 349384 478823 4268152
   3    3 hda3 126 390 0 0
   3    4 hda4 1 2 0 0
   3    5 hda5 25107 482143 1590283 12722264
   3    6 hda6 350421 6162254 1846368 18947434
  22    0 hdc 645330 32075 16394374 5004988 3248021 1241426 51460570 322041812 4294604486 973546416 815114348
  22    1 hdc1 638 5077 85 392
  22    2 hdc2 28837 349252 478823 4268152
  22    3 hdc3 110 262 0 0
  22    4 hdc4 1 2 0 0
  22    5 hdc5 25243 477011 1590283 12722264
  22    6 hdc6 383291 6668270 1846368 18947434
  22    7 hdc7 239340 8894140 215344 12619848
   9  255 md255 0 0 0 0 0 0 0 0 0 0 0
   9    6 md6 733304 0 12830102 0 1701582 0 17789146 0 0 0 0
   9    5 md5 49942 0 958732 0 1440081 0 11520648 0 0 0 0
   9    3 md3 28 0 224 0 0 0 0 0 0 0 0
   9    2 md2 57619 0 698452 0 411035 0 3725848 0 0 0 0
   9    1 md1 1096 0 10172 0 51 0 120 0 0 0 0
 253    0 dm-0 239001 0 8893728 1238816 215344 0 12619848 74683508 0 1960264 75922320
 253    1 dm-1 571654 0 8372232 6552392 984122 0 8483984 1032265184 0 12029900 1038817532
 253    2 dm-2 60680 0 750806 521220 235012 0 473106 10290784 0 9722904 10811996
 253    3 dm-3 100857 0 3705936 1122480 482448 0 8832056 143430444 0 3594276 144552900
 253    4 dm-4 9261 0 258154 226560 1361550 0 10892400 35909300 0 7016908 36136796
 253    5 dm-5 40579 0 699762 304416 78531 0 628248 12784144 0 908428 13088548
[root@cryo queue]#