Hi Mike,
> On 25 Sep 2014, at 17:47, Mike Dawson <mike.dawson@xxxxxxxxxxxx> wrote:
>
> On 9/25/2014 11:09 AM, Sage Weil wrote:
>> v0.67.11 "Dumpling"
>> ===================
>>
>> This stable update for Dumpling fixes several important bugs that affect a
>> small set of users.
>>
>> We recommend that all Dumpling users upgrade at their convenience. If
>> none of these issues are affecting your deployment there is no urgency.
>>
>>
>> Notable Changes
>> ---------------
>>
>> * common: fix sending dup cluster log items (#9080 Sage Weil)
>> * doc: several doc updates (Alfredo Deza)
>> * libcephfs-java: fix build against older JNI headesr (Greg Farnum)
>> * librados: fix crash in op timeout path (#9362 Matthias Kiefer, Sage Weil)
>> * librbd: fix crash using clone of flattened image (#8845 Josh Durgin)
>> * librbd: fix error path cleanup when failing to open image (#8912 Josh Durgin)
>> * mon: fix crash when adjusting pg_num before any OSDs are added (#9052
>> Sage Weil)
>> * mon: reduce log noise from paxos (Aanchal Agrawal, Sage Weil)
>> * osd: allow scrub and snap trim thread pool IO priority to be adjusted
>> (Sage Weil)
>
> Sage,
>
> Thanks for the great work! Could you provide any links describing how to tune the scrub and snap trim thread pool IO priority? I couldn't find these settings in the docs.
I use:
[osd]
osd disk thread ioprio class = 3
osd disk thread ioprio priority = 0
You’ll need to use the cfq io scheduler for those to have an effect.
FYI, I can make scrubs generally transparent by also adding:
osd scrub sleep = .1
osd scrub chunk max = 5
osd deep scrub stride = 1048576
Your mileage may vary.
> IIUC, 0.67.11 does not include the proposed changes to address #9487 or #9503, right?
Those didn’t make it.
Cheers, Dan
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