Just a little question regarding this operation :

[root@osdhost osd]# ceph-volume lvm prepare --bluestore --data /dev/sdc --block.wal /dev/sda2 --block.db /dev/sda1

On a previous post, I understood that if both wal and db are stored on the same separate device, then we could use a single partition for both...which means we could do :

# ceph-volume lvm prepare --bluestore --data /dev/sdc --block.wal /dev/sda1 --block.db /dev/sda1

and so on with other uniq wal/db partition for other OSD...

Did I get that correctly ?



Le 07/04/2018 à 17:59, Gary Verhulp a écrit :

I’m trying to create bluestore osds with separate --block.wal --block.db devices on a write intensive SSD

I’ve split the SSD (/dev/sda) into two partditions sda1 and sda2 for db and wal

I seems to me the osd uuid is getting changed and I’m only able to start the last OSD

Do I need to create a new partition or logical volume on the SSD for each OSD?

I’m sure this is a simple fail in my understanding of how it is supposed to be provisioned.

Any advice would be appreciated.



[root@osdhost osd]# ceph-volume lvm prepare --bluestore --data /dev/sdc --block.wal /dev/sda2 --block.db /dev/sda1

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