Re: Manual deep scrub

[David Turner <david.turner@xxxxxxxxxxxxxxxx>]

Looking through the additional osd config options for scrubbing show a couple options that can prevent a PG from scrubbing immediately.

osd_scrub_during_recovery - default true - If false, no new scrub can be scheduled while their is active recovery.
osd_scrub_load_threshold - default 0.5 - Ceph will not scrub when the system load is higher than this number.

osd_scrub_load_threshold seems like a likely cause of what you are seeing.

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David Turner | Cloud Operations Engineer | StorageCraft Technology Corporation 380 Data Drive Suite 300 | Draper | Utah | 84020 Office: 801.871.2760 | Mobile: 385.224.2943

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From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of Richard Arends [cephmailinglist@xxxxxxxxx]
Sent: Tuesday, January 17, 2017 1:07 PM
To: ceph-users@xxxxxxxxxxxxxx
Subject: Re: [ceph-users] Manual deep scrub

On 01/17/2017 05:15 PM, David Turner wrote:

David,

All OSDs with a copy of the PG need to not be involved in any scrub for the scrub to start immediately.  It is not just the primary OSD but all secondary OSDs as well for a scrub to be able to run on a PG.

I thought of that and checked if the other (2 in this case) where doing something and on the first sight it did not look like that. Tomorrow i will do some more tests. Thanks for the pointers !

-- 
Regards,

Richard.

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