bluestore worries

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Hi all,

I am thinking about converting a Filestore cluster to Bluestore.

The OSD nodes have 16X4TB 7200 SATA OSDs with NVME write journals. The NVME drives should be large enough to house ~30G DB/WAL OSDs.

I am worried that I will see a significant performance hit when the deferred writes to the NVME journals are eliminated with Bluestore.

Has anyone converted a similar setup to Bluestore? If so, what was the performance impact.

thx
Frank


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