W dniu 10.03.2014 o 07:54 Stefan Priebe - Profihost AG
<s.priebe@xxxxxxxxxxxx> pisze:
Am 07.03.2014 16:56, schrieb Konrad Gutkowski:
Hi,
If those are journal drives you could have n+1 ssd's and swap them at
some intervals, could introduce more problems.
If it required data to be synchronized one could operate it with
degraded raid1 to swap disks, would introduce unnecessary wear though...
Just a thought.
No they're running as OSD disks.
It depends on your operational constraints then, don't know how quickly
ssd's can complete GC, but if you can take the whole cluster offline for a
short while if should be simple and clean way to solve this. But I guess
you already thought about it.
My thinking is.. shouldn't TRIM suffice? (internet tells me it should)
W dniu 07.03.2014 o 15:22 Stefan Priebe - Profihost AG
<s.priebe@xxxxxxxxxxxx> pisze:
Hello list,
a lot of SSDs do their garbage collection only if the SSD is idle. But
in a ceph cluster the ssd gets never idle.
Does anybody have creative ideas how to solve this?
Greets,
Stefan
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Regards,
Konrad Gutkowski
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