I accidentally responded from the wrong email address. We will be able to build off of master and test that.
Sent from my iPhone On Feb 5, 2017, at 3:27 PM, Peter Maloney <peter.malo...@brockmann-consult.de<mailto:peter.malo...@brockmann-consult.de>> wrote: On 02/03/17 19:54, David Turner wrote: Our current solution in Hammer involves a daemon monitoring the cluster load and setting the osd_snap_trim_sleep accordingly between 0 and 0.35 which does a good job of preventing IO blocking and help us to clear out the snap_trim_q each day. These settings not being injectable in Jewel would negate an option of using variable settings throughout the day. Are you sure they're not injectable? [Almost?] everything says "unchangable", but it takes effect anyway. I have tested "snap_trim_sleep", and as Nick has pointed out, it seems to cause rather than prevent blocks (and I found the sweet spot is 0, but he seems to think it's higher). I can reproduce that very reliably using injectargs (+5 to sleep means +5s block length), so (unless luck can happen in such extreme ways, or somehow only part of the effect changed) they are changable. I'm using Jewel. So I am now using: osd_pg_max_concurrent_snap_trims=1 osd_snap_trim_sleep=0 ________________________________ [cid:imagef87fae.JPG@50454f78.42884055]<https://storagecraft.com> David Turner | Cloud Operations Engineer | StorageCraft Technology Corporation<https://storagecraft.com> 380 Data Drive Suite 300 | Draper | Utah | 84020 Office: 801.871.2760 | Mobile: 385.224.2943 ________________________________ If you are not the intended recipient of this message or received it erroneously, please notify the sender and delete it, together with any attachments, and be advised that any dissemination or copying of this message is prohibited. ________________________________ _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
