[ceph-users] force scrubbing

David Turner drakonstein at gmail.com
Tue Nov 28 18:14:12 PST 2017


I personally set max_scrubs to 0 on the cluster and then set it to 1 only
on the osds involved in the PG you want to scrub.  Setting the cluster to
max_scrubs of 1 and then upping the involved osds to 2 might help, but is
not a guarantee.

On Tue, Nov 28, 2017 at 7:25 PM Gregory Farnum <gfarnum at redhat.com> wrote:

> On Mon, Nov 13, 2017 at 1:01 AM Kenneth Waegeman <
> kenneth.waegeman at ugent.be> wrote:
>
>> Hi all,
>>
>>
>> Is there a way to force scrub a pg of an erasure coded pool?
>>
>> I tried  ceph pg deep-scrub 5.4c7, but after a week it still hasn't
>> scrubbed the pg (last scrub timestamp not changed)
>>
>
> Much to my surprise, it appears you can't force a scrub to start
> immediately, or even to be the next one in the queue. :/ I think you can
> hack around it with the correct combination of scrub settings; maybe one of
> the more experienced cluster admins can tell you. (Something about turning
> down the scrubs allowed to zero and the scrub intervals to very large
> numbers? Then telling it to scrub the one you want and increasing the
> number of allowed scrubs to 1?)
>
> Anyway, can you submit a ticket for that feature? It would be pretty
> useful.
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