Re: OSDs get killed by OOM when other host goes down

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Hi Marius,

Dan already hit the nail on the head with the pglog usage. One other
thing I wanted to poke at wrt your configuration:

> There are 3 pools of 256, 128 and 32 PGs (total = 416 PGs across 8 OSDs).
> The pool size is 2

Does this mean that all 3 pools are replicated with size=2? If so,
that's 416 * 2 / 8 = 104PGs/OSD, which is totally reasonable, though I
wonder how much imbalance you have in the system and whether some OSDs
have a lot of PGs on them since the configuration is so small. (You
can check via "ceph osd df tree".)

Josh
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