RBD and balanced reads

[Sébastien Han <sebastien.han@xxxxxxxxxxxx>]

Hi guys,

While reading a developer doc, I came across the following options:

* osd balance reads = true

* osd shed reads = true
* osd shed reads min latency
* osd shed reads min latency diff

The problem is that I can't find any of these options in config_opts.h.

Loic Dachary also gave me a flag that he found from the code.

m->get_flags() & CEPH_OSD_FLAG_LOCALIZE_READS)

So my questions are:

* Which from the above flags are correct?

* Do balanced reads really exist in RBD?

Thanks in advance.

––––

Sébastien Han

Cloud Engineer

"Always give 100%. Unless you're giving blood."

Phone : +33 (0)1 49 70 99 72 – Mobile : +33 (0)6 52 84 44 70

Mail: sebastien.han@xxxxxxxxxxxx – Skype : han.sbastien

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