[ceph-users] Migrate journal to Nvme from old SSD journal drive?

Hi, I finally got my Samsung PM983 [1] to use as journal for about 6 drives plus drive cache replacing a consumer SSD - Kingston SV300. But I can't for the life of me figure out how to move an existing journal to this NVME on my Nautilus cluster. # Created a new big partition on the NVME sgdisk --new=1:2048:+33GiB --change-name="1:ceph block.db" --typecode="1:30cd0809-c2b2-499c-8879-2d6b78529876" --mbrtogpt /dev/nvme0n1 partprobe sgdisk -p /dev/nvme0n1 # The below assumes there is already a partition+ fs on the nvme? ceph-bluestore-tool bluefs-bdev-migrate –dev-target /dev/nvme0n1p1 -devs-source /var/lib/ceph/osd/ceph-1/block.db - too many positional options have been specified on the command line ceph-bluestore-tool bluefs-bdev-migrate -–path /var/lib/ceph/osd/ceph-1/block.db –-dev-target /dev/nvme0n1p1 - too many positional options have been specified on the command line # Or should I create a new block device? if yes, will WAL come along ? And how do I remove the SSD journal partition (the old) ceph-bluestore-tool bluefs-bdev-new-db -–path /var/lib/ceph/osd/ceph-1/block.db –-dev-target /dev/nvme0n1p1 The documentation is not very clear on what migration does, nor has the same concept of a DEVICE (/dev/sda is a device for me) it seems. Thanks in advance, Alex ---- [1] - Performance stats: https://docs.google.com/spreadsheets/d/1LXupjEUnNdf011QNr24pkAiDBphzpz5_MwM…