create osd with db_dev: no ceph vg found

[cola16]

 pveceph osd create /dev/sda1 \
 --crush-device-class hdd \
 --db_dev /dev/nvme0n1p4 \
 --db_dev_size 75

I got error

create OSD on /dev/sda1 (bluestore)
creating block.db on '/dev/nvme0n1p4'
no ceph vg found on '/dev/nvme0n1p4'

I didn't realize db_dev_size was in GiB.
At first I thought it was a percentage, so I put 4 on "db_dev_size" and created osd.
but I saw that it created only 4GiB.
Afterward, I removed the OSD and trying to recreated it, failed with the error.


I also tried ceph-volume.
But this command did not create the block.db in lvm.
ceph-volume lvm create --block.db '/dev/nvme1n1p4' --data /dev/sdb1 --block.db-size 79993765888

How can I create a VG?

 

[cola16]

I checked the OSD creation log in proxmox task history and performed it as is.
If I do this, am I creating it correctly?

vguuid=e05ad366-37f1-444b-a2bd-4d876345c4fe
lvuuid=a33e8521-ae0b-4988-abd7-d41e5633ef29
datadisk=/dev/sda1
dbdisk=/dev/nvme0n1p4
dbsizeMiB=76308
disktype=hdd

pvcreate $dbdisk
vgcreate ceph-$vguuid $dbdisk
lvcreate -L ${dbsizeMiB}MiB -n osd-db-$lvuuid ceph-$vguuid

ceph-volume lvm create --bluestore --data $datadisk --crush-device-class $disktype --block.db '/dev/ceph-$vguuid/osd-db-$lvuuid'