Hi,

This is not a normal, It's something different I think, like a crush changes on 
restart. This option will be enabled by default again in Nautilus next, so you 
can use it now with 14.2.19-20


k

Sent from my iPhone

> On 14 May 2021, at 08:21, Szabo, Istvan (Agoda) <istvan.sz...@agoda.com> 
> wrote:
> 
> Hi,
> 
> I had issue with the snaptrim after a hug amount of deleted data, it slows 
> down the team operations due to the snaptrim and snaptrim_wait pgs.
> 
> I've changed couple of things:
> 
> debug_ms = 0/0 #default 0/5
> osd_snap_trim_priority = 1 # default 5
> osd_pg_max_concurrent_snap_trims = 1 # default 2
> 
> But didn't help.
> 
> I've found this thread about buffered io and seems like it helped to them:
> https://forum.proxmox.com/threads/ceph-storage-all-pgs-snaptrim-every-night-slowing-down-vms.71573/
> 
> I don't use swap on the OSD nodes, so I gave a try on 1 osd node and it 
> caused basically the complete node's pg-s are degraded. Is it normal? I hope 
> it will not rebalance the complete node because I don't have space for that. 
> I changed it back but still slowly decreasing, so not sure this settings is 
> correct or not or this behavior is good or not?
> 
> 2021-05-14 12:18:11.447628 mon.2004 [WRN] Health check update: 3353/91976715 
> objects misplaced (0.004%) (OBJECT_MISPLACED)
> 2021-05-14 12:18:11.447640 mon.2004 [WRN] Health check update: Degraded data 
> redundancy: 33078466/91976715 objects degraded (35.964%), 254 pgs degraded, 
> 253 pgs undersized (PG_DEGRADED)
> 
> Istvan Szabo
> Senior Infrastructure Engineer
> ---------------------------------------------------
> Agoda Services Co., Ltd.
> e: istvan.sz...@agoda.com<mailto:istvan.sz...@agoda.com>
> ---------------------------------------------------
> 
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