[PVE-User] Proxmox Ceph workload issue....

Alwin Antreich a.antreich at proxmox.com
Mon Dec 10 10:33:32 CET 2018


Hello Gilberto,

On Fri, Dec 07, 2018 at 03:34:42PM -0200, Gilberto Nunes wrote:
> Hi there
> 
> I have a 6 nodes Ceph cluster make with Proxmox.
> In order to recude the workload rebalance, I activate some features, like
> this:
> 
> ceph tell osd.* injectargs '--osd-max-backfills 1'
> ceph tell osd.* injectargs '--osd-max-recovery-threads 1'
> ceph tell osd.* injectargs '--osd-recovery-op-priority 1'
> ceph tell osd.* injectargs '--osd-client-op-priority 63'
> ceph tell osd.* injectargs '--osd-recovery-max-active 1'
> ceph tell osd.* injectargs '--osd-max-scrubs 1'
> ceph tell osd.* injectargs '--osd-scrub-max-interval 4838400'
> ceph tell osd.* injectargs '--osd-scrub-min-interval 2419200'
> ceph tell osd.* injectargs '--osd-deep-scrub-interval 2419200'
> ceph tell osd.* injectargs '--osd-scrub-interval-randomize-ratio 1.0'
> ceph tell osd.* injectargs '--osd-disk-thread-ioprio-class idle'
> ceph tell osd.* injectargs '--osd-disk-thread-ioprio-priority 0'
> ceph tell osd.* injectargs '--osd-scrub-chunk-max 1'
> ceph tell osd.* injectargs '--osd-scrub-chunk-min 1'
> ceph tell osd.* injectargs '--osd-deep-scrub-stride 1048576'
> ceph tell osd.* injectargs '--osd-scrub-load-threshold 5.0'
> ceph tell osd.* injectargs '--osd-scrub-sleep 0.1'
> ceph osd set nodeep-scrub
> 
> Is there any troble if I leave this feature like above?
Well, you need to monitor your cluster and see if it helps or does any
harm. Also check with these settings, if your cluster will ever do
scrubbing (or finish).

--
Cheers,
Alwin



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