How to replace ssd as a cache

[huky]

After adding a SSD into server, I rebuilded all OSDs to add cache for every OSD:

ceph-volume lvm prepare --data /dev/sdd --block.wal /dev/nvme0n1p4 --block.db /dev/nvme0n1p10

And now I wonder how to replace the ssd a few years later?

 

[wolfgang]

And now I wonder how to replace the ssd a few years later?

You have to destroy the complete OSD and rebuild it from scratch.

 

[huky]

ok...
Can you give me some advice about the size of db and wal ?
Is it appropriate to put them together on a SSD?

You have to destroy the complete OSD and rebuild it from scratch.