Hi, I have 4 osd nodes with 4 hdd and 1 ssd on each. I'm gonna add these osds in an existing cluster. What I'm confused is that how to deal with the ssd. Can I deploy 4 osd with wal and db in one ssd partition such as: # ceph-disk prepare --bluestore --block.db /dev/sdc --block.wal /dev/sdc /dev/sdd # ceph-disk prepare --bluestore --block.db /dev/sdc --block.wal /dev/sdc /dev/sde # ceph-disk prepare --bluestore --block.db /dev/sdc --block.wal /dev/sdc /dev/sdf # ceph-disk prepare --bluestore --block.db /dev/sdc --block.wal /dev/sdc /dev/sdg or should I place wal and db in seperate ssd partitions: # ceph-disk prepare --bluestore --block.db /dev/sdc1 --block.wal /dev/sdc1 /dev/sdd # ceph-disk prepare --bluestore --block.db /dev/sdc2 --block.wal /dev/sdc2 /dev/sde # ceph-disk prepare --bluestore --block.db /dev/sdc3 --block.wal /dev/sdc3 /dev/sdf # ceph-disk prepare --bluestore --block.db /dev/sdc4 --block.wal /dev/sdc4 /dev/sdg
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