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

Gilberto Nunes gilberto.nunes32 at gmail.com
Mon Dec 10 10:51:03 CET 2018


Right now, the cluster itself are rebalancing for about 4 days... But since
the third day, no performance impact in the environment, because I ran the
command mentioned in the previously mail.
Better slow rebalance then poor performance...
---
Gilberto Nunes Ferreira

(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram

Skype: gilberto.nunes36





Em seg, 10 de dez de 2018 às 07:33, Alwin Antreich <a.antreich at proxmox.com>
escreveu:

> 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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