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$ ceph balancer off
$ ceph balancer mode none
$ ceph osd pool create balancer_opt 128
pool 'balancer_opt' created
$ ceph osd pool application enable balancer_opt rados
enabled application 'rados' on pool 'balancer_opt'
$ rados bench -p balancer_opt 50 write --no-cleanup > /dev/null
$ ceph balancer on
$ ceph balancer mode crush-compat
$ ceph balancer ls
[]
$ ceph config set osd.* target_max_misplaced_ratio .07
$ ceph balancer eval
current cluster score [0-9]*\.?[0-9]+.* (re)
# Turn off active balancer to use manual commands
$ ceph balancer off
$ ceph balancer optimize test_plan balancer_opt
$ ceph balancer ls
[
"test_plan"
]
$ ceph balancer execute test_plan
$ ceph balancer eval
current cluster score [0-9]*\.?[0-9]+.* (re)
# Plan is gone after execution ?
$ ceph balancer execute test_plan
Error ENOENT: plan test_plan not found
[2]
$ ceph osd pool rm balancer_opt balancer_opt --yes-i-really-really-mean-it
pool 'balancer_opt' removed
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