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mimic: crush: add root_bucket to identify underfull buckets #27257

merged 1 commit into from Apr 5, 2019


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commented Mar 29, 2019

huangjun Prashant D
crush: add root_bucket to identify underfull buckets
All underfull buckets under root_buckets will be taken as target

For the crule rule:
    step take datacenter0
    step chooseleaf firstn 2 type host
    step emit
    step take datacenter1
    step chooseleaf firstn 2 type host
    step emit

If one host contains overfull osd but no underfull osd,
it will use other underfull buckets as target, which
maybe not in the same datacenter, that will
broke the rule.


Signed-off-by: huangjun <>
(cherry picked from commit 3d5678d)

@tchaikov tchaikov added this to the mimic milestone Mar 29, 2019

@smithfarm smithfarm requested review from xiexingguo and liewegas Mar 29, 2019


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commented Apr 2, 2019

@yuriw yuriw merged commit 28bb5d3 into ceph:mimic Apr 5, 2019

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