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Documentation #3839 ยป crushmap.txt

Alexandre Marangone, 01/17/2013 10:28 AM

 
device 0 osd.0
device 1 osd.1
device 2 osd.2
device 3 osd.3
device 4 osd.4
device 5 osd.5
device 6 osd.6
device 7 osd.7

# types
type 0 osd
type 1 host
type 2 rack
type 3 row
type 4 room
type 5 datacenter
type 6 root

host ceph-osd-ssd-server-1 {
id -1
alg straw
hash 0
item osd.0 weight 1.00
item osd.1 weight 1.00
}

host ceph-osd-ssd-server-2 {
id -2
alg straw
hash 0
item osd.2 weight 1.00
item osd.3 weight 1.00
}

host ceph-osd-platter-server-1 {
id -3
alg straw
hash 0
item osd.4 weight 1.00
item osd.5 weight 1.00
}

host ceph-osd-platter-server-2 {
id -4
alg straw
hash 0
item osd.6 weight 1.00
item osd.7 weight 1.00
}

root platter {
id -5
alg straw
hash 0
item ceph-osd-platter-server-1 weight 2.00
item ceph-osd-platter-server-2 weight 2.00
}

root ssd {
id -6
alg straw
hash 0
item ceph-osd-ssd-server-1 weight 2.00
item ceph-osd-ssd-server-2 weight 2.00
}

rule data {
ruleset 0
type replicated
min_size 2
max_size 2
step take platter
step chooseleaf firstn 0 type host
step emit
}

rule metadata {
ruleset 1
type replicated
min_size 0
max_size 10
step take platter
step chooseleaf firstn 0 type host
step emit
}

rule rbd {
ruleset 2
type replicated
min_size 0
max_size 10
step take platter
step chooseleaf firstn 0 type host
step emit
}

rule platter {
ruleset 3
type replicated
min_size 0
max_size 10
step take platter
step chooseleaf firstn 0 type host
step emit
}

rule ssd {
ruleset 4
type replicated
min_size 0
max_size 10
step take ssd
step chooseleaf firstn 0 type host
step emit
}

rule ssd-primary {
ruleset 5
type replicated
min_size 0
max_size 10
step take ssd
step chooseleaf firstn 1 type host
step emit
step take platter
step chooseleaf firstn -1 type host
step emit
}
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