What's the CPU busy with while spinning at 100%? Check "perf top" for a quick overview Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 On Wed, Apr 8, 2020 at 3:09 PM Jack <ceph@jack.fr.eu.org> wrote:
I do: root@backup1:~# ceph config dump | grep snap_trim_sleep global advanced osd_snap_trim_sleep 60.000000 global advanced osd_snap_trim_sleep_hdd 60.000000
(cluster is fully rusty)
On 4/8/20 2:53 PM, Dan van der Ster wrote:
Do you have a custom value for osd_snap_trim_sleep ?
On Wed, Apr 8, 2020 at 2:03 PM Jack <ceph@jack.fr.eu.org> wrote:
I put the nosnaptrim during upgrade because I saw high CPU usage and though it was somehow related to the upgrade process However, all my daemon are now running Octopus, and the issue is still here, so I was wrong
On 4/8/20 1:58 PM, Wido den Hollander wrote:
On 4/8/20 1:38 PM, Jack wrote:
Hello,
I've a issue, since my Nautilus -> Octopus upgrade
My cluster has many rbd images (~3k or something) Each of them has ~30 snapshots Each day, I create and remove a least a snapshot per image
Since Octopus, when I remove the "nosnaptrim" flags, each OSDs uses 100% of its CPU time
Why do you have the 'nosnaptrim' flag set? I'm missing that piece of information.
The whole cluster collapses: OSDs no longer see each others, most of them are seens as down .. I do not see any progress being made : it does not appear the problem will solve by itself
What can I do ?
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