ceph/src/test/cli/crushtool/device-class.crush

   1 # begin crush map
   2
   3 # devices
   4 device 0 device0 class ssd
   5 device 1 device1 class ssd
   6 device 2 device2 class hdd
   7
   8 # types
   9 type 0 device
  10 type 1 host
  11 type 2 rack
  12 type 3 root
  13
  14 # buckets
  15 host host0 {
  16         id -1           # do not change unnecessarily
  17         id -6 class ssd         # do not change unnecessarily
  18         id -11 class hdd                # do not change unnecessarily
  19         # weight 1.000
  20         alg straw
  21         hash 0  # rjenkins1
  22         item device0 weight 1.000
  23 }
  24 host host1 {
  25         id -2           # do not change unnecessarily
  26         id -7 class ssd         # do not change unnecessarily
  27         id -12 class hdd                # do not change unnecessarily
  28         # weight 1.000
  29         alg straw
  30         hash 0  # rjenkins1
  31         item device1 weight 1.000
  32 }
  33 host host2 {
  34         id -5           # do not change unnecessarily
  35         id -8 class ssd         # do not change unnecessarily
  36         id -13 class hdd                # do not change unnecessarily
  37         # weight 1.000
  38         alg straw
  39         hash 0  # rjenkins1
  40         item device2 weight 1.000
  41 }
  42 rack rack0 {
  43         id -3           # do not change unnecessarily
  44         id -9 class ssd         # do not change unnecessarily
  45         id -14 class hdd                # do not change unnecessarily
  46         # weight 3.000
  47         alg straw
  48         hash 0  # rjenkins1
  49         item host0 weight 1.000
  50         item host1 weight 1.000
  51         item host2 weight 1.000
  52 }
  53 root root {
  54         id -4           # do not change unnecessarily
  55         id -10 class ssd                # do not change unnecessarily
  56         id -15 class hdd                # do not change unnecessarily
  57         # weight 4.000
  58         alg straw
  59         hash 0  # rjenkins1
  60         item rack0 weight 4.000
  61 }
  62
  63 # rules
  64 rule data-ssd {
  65         id 1
  66         type replicated
  67         min_size 2
  68         max_size 2
  69         step take root class ssd
  70         step chooseleaf firstn 0 type rack
  71         step emit
  72 }
  73 rule data-hdd {
  74         id 2
  75         type replicated
  76         min_size 2
  77         max_size 2
  78         step take root class hdd
  79         step chooseleaf firstn 0 type rack
  80         step emit
  81 }
  82 rule data {
  83         id 3
  84         type replicated
  85         min_size 2
  86         max_size 2
  87         step take root
  88         step chooseleaf firstn 0 type rack
  89         step emit
  90 }
  91
  92 # end crush map