On Wed, Aug 1, 2018 at 4:33 AM, Jake Grimmett <jog@xxxxxxxxxxxxxxxxx> wrote:
> Dear All,
>
> Not sure if this is a bug, but when I add Intel Optane 900P drives,
> their device class is automatically set to SSD rather than NVME.
Not sure if we can't really tell apart SSDs from NVMe devices, but you
can use the --crush-device-class flag to force it to NVME:
ceph-volume lvm prepare --bluestore --data /dev/nvme0n1
--crush-device-class=nvme
>
> This happens under Mimic 13.2.0 and 13.2.1
>
> [root@ceph2 ~]# ceph-volume lvm prepare --bluestore --data /dev/nvme0n1
>
> (SNIP see http://p.ip.fi/eopR for output)
>
> Check...
> [root@ceph2 ~]# ceph osd tree | grep "osd.1 "
> 1 ssd 0.25470 osd.1 up 1.00000 1.00000
>
> Fix is easy
> [root@ceph2 ~]# ceph osd crush rm-device-class osd.1
> done removing class of osd(s): 1
>
> [root@ceph2 ~]# ceph osd crush set-device-class nvme osd.1
> set osd(s) 1 to class 'nvme'
>
> Check...
> [root@ceph2 ~]# ceph osd tree | grep "osd.1 "
> 1 nvme 0.25470 osd.1 up 1.00000 1.00000
>
>
> Thanks,
>
> Jake
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