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
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[1] - Performance stats:
https://docs.google.com/spreadsheets/d/1LXupjEUnNdf011QNr24pkAiDBphzpz5_MwM…