I am seeing very long run times for osdmaptool --upmap running Ceph 15.2.16 and I am wondering how to speed that up? When run on a large pool (PG=8k and OSD=725) I am seeing the following run times for, # osdmaptool om.hdd --upmap upmap.mirror.hdd.ec.8 --upmap-pool fs.data.mirror.hdd.ec --upmap-max 1000 --upmap-deviation 8 upmap-deviation time --------------- ---- 15 6m 10 11m 9 12m 8 76m/19m 5 killed after 30 hours I really want to run with --upmap-deviation 1 to blanance this unbalanced pool that currently ranges from 25-90% utilization on individual OSD, however, it is not clear osdmaptool would ever complete. By comparison another similarly sized pool (PG=4k OSD=1538) in the same cluster only takes a few seconds to run with upmap-deviation=1. Any suggestions on how to get osdmaptool --upmap to run faster? Thanks. --- anderson@xxxxxxxxxxxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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