Hi Burkhard,

I tried using the autoscaler, however it did not give a suggestion to resize 
pg_num.  Since my pg_num is not a power of 2, I wanted to fix that first, 
manually, to only realize that it didn’t work.

Because changing pg_num manually did not work, I am not convinced that the 
autoscaler will work, either, when the time comes.  The autoscaler pg_num 
changes would follow the same execution path as manual changes, won’t they?

Thanks!

George

> On Sep 12, 2019, at 4:37 AM, Burkhard Linke 
> <burkhard.li...@computational.bio.uni-giessen.de> wrote:
> 
> Hi,
> 
> On 9/12/19 5:16 AM, Kyriazis, George wrote:
>> Ok, after all is settled, I tried changing pg_num again on my pool and it 
>> still didn’t work:
>> 
>> # ceph osd pool get rbd1 pg_num
>> pg_num: 100
>> # ceph osd pool set rbd1 pg_num 128
>> # ceph osd pool get rbd1 pg_num
>> pg_num: 100
>> # ceph osd require-osd-release nautilus
>> # ceph osd pool set rbd1 pg_num 128
>> # ceph osd pool get rbd1 pg_num
>> pg_num: 100
>> #
>> 
>> Suggestions, anybody?
> 
> 
> If you use the autoscaler, changing pg_num will actually change the 
> pg_num_target setting. The autoscaler will then take care for gently 
> increasing pg_num until it reaches the value of pg_num_target.
> 
> 
> Regards,
> 
> Burkhard
> 
> 
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