How files are split into PGs ?

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Hello,

I have a 1GB file and 2 pools, one replicated and one EC 8+2, and I want to make a copy of this file through the radosgw with s3.
I'd like to know how this file will be split into PGs in both pools.

Some details for my use case :

12 hosts
10 OSDs per Host
failure domain set to Host
PG=1024

If I push this file through ma radosgw, How I can find all replicats on the OSDs ?

And another question, for really small files, on an EC pool, files will be replicated with k+m replica, won't they ?

Thanks

-- 
Yoann Moulin
EPFL IC-IT
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