Am 9/10/25 um 10:27 schrieb Robert Sander:
So there must be a slight difference in the config of the subsystems / namespaces between v19 and v20.
After removing both namespaces (RBD ns01 and ns02) from the old subsystem and adding them again the initiator sees them: # nvme list Node Generic SN Model Namespace Usage Format FW Rev --------------------- --------------------- -------------------- ---------------------------------------- ---------- -------------------------- ---------------- -------- /dev/nvme1n1 /dev/ng1n1 Ceph30844860597194 Ceph bdev Controller 0x1 107.37 GB / 107.37 GB 512 B + 0 B 25.05 /dev/nvme1n2 /dev/ng1n2 Ceph30844860597194 Ceph bdev Controller 0x2 214.75 GB / 214.75 GB 512 B + 0 B 25.05 /dev/nvme5n1 /dev/ng5n1 Ceph44670645393042 Ceph bdev Controller 0x1 161.06 GB / 161.06 GB 512 B + 0 B 25.05 # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 60G 0 disk ├─sda1 8:1 0 1G 0 part /boot/efi ├─sda2 8:2 0 2G 0 part /boot └─sda3 8:3 0 56.9G 0 part ├─system-swap 252:0 0 100M 0 lvm [SWAP] └─system-root 252:1 0 56.8G 0 lvm /var/lib/containers/storage/overlay / sr0 11:0 1 4M 0 rom nvme1n1 259:4 0 100G 0 disk └─nvme1n1p1 259:5 0 100G 0 part nvme5n1 259:9 0 150G 0 disk nvme1n2 259:14 0 200G 0 disk └─nvme1n2p1 259:16 0 200G 0 part Regards -- Robert Sander Linux Consultant Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin https://www.heinlein-support.de Tel: +49 30 405051 - 0 Fax: +49 30 405051 - 19 Amtsgericht Berlin-Charlottenburg - HRB 220009 B Geschäftsführer: Peer Heinlein - Sitz: Berlin