I have a 3-node Ceph cluster, with a mixture of Intel Optane 905P PCIe
disks, and normal SATA SSD drives.
I want to create two Ceph pools, one with only the Optane disks, and the
other with only the SATA SSDs.
When I checked "ceph osd tree", all the drives had device class "ssd".
As a hack - I was able to change the device class for the Optane drives to
"nvme", and leave the SATA SSDs as "ssd".
I then created crush rules based on device classes.
However, what if I don't want to overload device classes to achieve this,
or have more than two models of disks?
Is there an easy way to assign specific drives of a model/type/capacity to
different pools?
It's already simple way to do that - device classes.
It's like 8021q in networks.
k
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