[pve-devel] applied: [PATCH manager] pveceph: createosd: allow to create bluestore OSDs

[Eneko Lacunza]

Hi,

El 28/06/17 a las 05:58, Dietmar Maurer escribió:
> Digging a bit deeper, I found the following:
>> BlueStore can use multiple block devices for storing different data,
>> for example: Hard Disk Drive (HDD) for the data Solid-state Drive (SSD) for
>> metadata Non-volatile Memory (NVM) or Non-volatile random-access memory
>> (NVRAM) or
>> persistent memory for the RocksDB write-ahead log (WAL).
> I wonder if such setup if really advisable?
Messages in ceph-user mailing list seem to suggest that it is. Some 
users have asked about what will happen with SSD journal disk investment 
when Blustore is stable, and the answer they received was that it can be 
used for metadata/WAL to improve performance.

I think Proxmox should give a choice for BlueStore OSD's metadata and 
WAL placement, the same way as currently does for FileStore OSD's journal.

Thanks a lot
Eneko

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