Bug #37502
Updated by Jan Fajerski almost 5 years ago
Both bluestore and filestore MixedStrategy create one volume group if multiple free SSDs are detected. This can create scenarios where a single bad ssd device takes down significantly more OSDs than then necessary. Consider a machine with 2 SSDs and 10 spinners. A batch call with all drives will create one vg on both SSDs and place wal/db volume on this vg. If one SSD goes bad, the single vg is inaccessible and in turn all OSDs on the thei machine go down. The better implementation would be to create one vg per pv/device.