Re: [ceph-users] force scrubbing

[David Turner]

They added `ceph pg force-backfill ` but there is nothing to force
scrubbing yet aside from the previously mentioned tricks. You should be
able to change osd_max_scrubs around until the PGs you want to scrub are
going.

On Thu, Mar 1, 2018 at 9:30 AM Kenneth Waegeman 
wrote:

> Hi,
>
> Still seeing this on Luminous 12.2.2:
>
> When I do ceph pg deep-scrub on the pg or ceph osd deep-scrub on the
> primary osd, I get the message
>
> instructing pg 5.238 on osd.356 to deep-scrub
>
> But nothing happens on that OSD. I waited a day, but the timestamp I see
> in ceph pg dump hasn't changed.
>
> Any clues?
>
> Thanks!!
>
> K
>
> On 13/11/17 10:01, Kenneth Waegeman 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)
> >
> > Thanks!
> >
> >
> > Kenneth
> >
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>
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Re: [ceph-users] force scrubbing

[Kenneth Waegeman]

Hi,

Still seeing this on Luminous 12.2.2:

When I do ceph pg deep-scrub on the pg or ceph osd deep-scrub on the 
primary osd, I get the message


instructing pg 5.238 on osd.356 to deep-scrub

But nothing happens on that OSD. I waited a day, but the timestamp I see 
in ceph pg dump hasn't changed.


Any clues?

Thanks!!

K

On 13/11/17 10:01, Kenneth Waegeman 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)


Thanks!


Kenneth

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Re: [ceph-users] force scrubbing

[David Turner]

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  wrote:

> On Mon, Nov 13, 2017 at 1:01 AM Kenneth Waegeman <
> kenneth.waege...@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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Re: [ceph-users] force scrubbing

[Gregory Farnum]

On Mon, Nov 13, 2017 at 1:01 AM Kenneth Waegeman 
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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[ceph-users] force scrubbing

[Kenneth Waegeman]

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)


Thanks!


Kenneth

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