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I built a new crush map using crushtool with the following settings:
crushtool --outfn testcrush --build --num-osds 10 host straw 2 rack straw 2 default straw 0
This results in the following crushmap, to which I added a custom replication rule "myrtle".
When I run crushtool to test my new crush map and rule I anticipate output similar to this:
crushtool -i crushmap --test --show-statistics --rule 1 --min-x 1 --max-x 2 --num-rep 2 rule 1 (myrule), x = 1..2, numrep = 2..2 CRUSH rule 1 x 1 [0,2] CRUSH rule 1 x 2 [7,4] rule 1 (myrule) num_rep 2 result size == 2: 2/2 However the output I am getting is the following:
rule 1 (myrule), x = 1..2, numrep = 2..2
rule 1 (myrule) num_rep 2 result size == 2:
2/2
I was expecting to see the placement groups for my test rule however I see only the summary in my output. Am I missing crushtool parameters or environment configuration settings?
Any guidance would be greatly appreciated.
Thanks, Fred Merlo
# begin crush map tunable choose_local_tries 0 tunable choose_local_fallback_tries 0 tunable choose_total_tries 50 tunable chooseleaf_descend_once 1 tunable straw_calc_version 1
# devices device 0 device0 device 1 device1 device 2 device2 device 3 device3 device 4 device4 device 5 device5 device 6 device6 device 7 device7 device 8 device8 device 9 device9
# types type 0 device type 1 host type 2 rack type 3 default
# buckets host host0 { id -1 # do not change unnecessarily # weight 2.000 alg straw hash 0 # rjenkins1 item device0 weight 1.000 item device1 weight 1.000 } host host1 { id -2 # do not change unnecessarily # weight 2.000 alg straw hash 0 # rjenkins1 item device2 weight 1.000 item device3 weight 1.000 } host host2 { id -3 # do not change unnecessarily # weight 2.000 alg straw hash 0 # rjenkins1 item device4 weight 1.000 item device5 weight 1.000 } host host3 { id -4 # do not change unnecessarily # weight 2.000 alg straw hash 0 # rjenkins1 item device6 weight 1.000 item device7 weight 1.000 } host host4 { id -5 # do not change unnecessarily # weight 2.000 alg straw hash 0 # rjenkins1 item device8 weight 1.000 item device9 weight 1.000 } rack rack0 { id -6 # do not change unnecessarily # weight 4.000 alg straw hash 0 # rjenkins1 item host0 weight 2.000 item host1 weight 2.000 } rack rack1 { id -7 # do not change unnecessarily # weight 4.000 alg straw hash 0 # rjenkins1 item host2 weight 2.000 item host3 weight 2.000 } rack rack2 { id -8 # do not change unnecessarily # weight 2.000 alg straw hash 0 # rjenkins1 item host4 weight 2.000 } default default { id -9 # do not change unnecessarily # weight 10.000 alg straw hash 0 # rjenkins1 item rack0 weight 4.000 item rack1 weight 4.000 item rack2 weight 2.000 }
# rules rule replicated_ruleset { ruleset 0 type replicated min_size 1 max_size 10 step take default step chooseleaf firstn 0 type host step emit }
rule myrule { ruleset 1 type replicated min_size 1 max_size 10 step take default step choose firstn 2 type rack step chooseleaf firstn 2 type host step emit }
# end crush map
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