[Bug 1261501] Re: ceph osds unbalanced
** Changed in: ceph (Ubuntu) Assignee: Dave Chiluk (chiluk) = (unassigned) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ceph in Ubuntu. https://bugs.launchpad.net/bugs/1261501 Title: ceph osds unbalanced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1261501/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1261501] Re: ceph osds unbalanced
** Changed in: ceph (Ubuntu) Importance: Undecided = Medium ** Changed in: ceph (Ubuntu) Status: New = Triaged -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ceph in Ubuntu. https://bugs.launchpad.net/bugs/1261501 Title: ceph osds unbalanced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1261501/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1261501] Re: ceph osds unbalanced
They likely have too few placement groups. They can retrieve their current
value using ...
$ ceph osd pool get {pool-name} pg_num
Please have IS set the number of placement groups according to the below page.
http://ceph.com/docs/master/rados/operations/placement-groups/
Basically it should be = 100 * number of osds/number of replicas
Assuming they are at a new enough version they should be able to run
ceph osd pool set {pool-name} pg_num {pg_num}
#wosup
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https://bugs.launchpad.net/bugs/1261501
Title:
ceph osds unbalanced
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[Bug 1261501] Re: ceph osds unbalanced
Woops missed the below.
Once you increase the number of placement groups, you must also increase
the number of placement groups for placement (pgp_num) before your
cluster will rebalance. The pgp_num should be equal to the pg_num. To
increase the number of placement groups for placement, execute the
following:
ceph osd pool set {pool-name} pgp_num {pgp_num}
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https://bugs.launchpad.net/bugs/1261501
Title:
ceph osds unbalanced
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[Bug 1261501] Re: ceph osds unbalanced
** Changed in: ceph (Ubuntu) Assignee: (unassigned) = Dave Chiluk (chiluk) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ceph in Ubuntu. https://bugs.launchpad.net/bugs/1261501 Title: ceph osds unbalanced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1261501/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1261501] Re: ceph osds unbalanced
This is Ceph Argonaut (from Folsom UCA); AIUI Ceph doesn't support/live PG addition until Dumpling. Can you confirm? Are there any workarounds? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ceph in Ubuntu. https://bugs.launchpad.net/bugs/1261501 Title: ceph osds unbalanced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1261501/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1261501] Re: ceph osds unbalanced
This may also be due to legacy CRUSH behavior that is fixed in bobtail (though not made default until recently). In newer Ceph versions, you can do 'ceph osd crush tunables optimal' to get the improved mapping (expect some data movement). I suggest you upgrade, in any case! -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ceph in Ubuntu. https://bugs.launchpad.net/bugs/1261501 Title: ceph osds unbalanced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1261501/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
