January 2019
Intermediate to advanced
606 pages
15h 1m
English
book
Ceph: Designing and Implementing Scalable Storage Systems
by Michael Hackett, Vikhyat Umrao, Karan Singh, Nick Fisk
Content preview from Ceph: Designing and Implementing Scalable Storage Systems
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OSD dump
The ceph osd dump command shows a wealth of lower-level information about our clusters. This includes a list of pools with their attributes and a list of OSDs each including reweight adjustment, up/in status, and more. This command is mostly used in unusual troubleshooting situations.
# ceph osd dump | head
epoch 33291
fsid 3369c9c6-bfaf-4114-9c31-ncc17014d0fe
created 2017-09-06 20:21:06.448220
modified 2017-09-17 21:38:44.530321
flags sortbitwise,require_jewel_osds
pool 1 'rbd' replicated size 3 min_size 2 crush_ruleset 0 object_hash rjenkins pg_num 16384 pgp_num 16384 last_change 31616 flags hashpspool,nodelete,nopgchange,nosizechange stripe_width 0
removed_snaps [1~3]
max_osd 287
osd.0 up in weight 1 up_from 31886 up_thru 33113 ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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