Hello ceph users, I have a question for you. I have checked ceph documentation and a number of online conversations in order to find some details and real-life experience about RBD image hosted on EC-encoded pools. I understand that it is essential to use Bluestore storage and create separate replicated metadata pool [1], and I also have found information that this kind of implementation is still suboptimal [2].
My real life experience tells me that this kind of setup will use much more hardware resources and will show lower benchmarks compared to recommended replicated pools on the same hardware. But I am wondering, are there some real-life companies that are using EC-encoded pools to host RBD images? What do they think about? When is it good idea to use such kind of setup? Any answers are appreciated. [1] http://docs.ceph.com/docs/luminous/rados/operations/erasure-code/ [2] http://docs.ceph.com/docs/luminous/rados/operations/cache-tiering/ BR, Alexey Stupnikov.
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