On 6/28/23 14:03, Boris Behrens wrote:
is it a problem that the device class for all my disks is SSD even all of these disks are NVME disks? If it is just a classification for ceph, so I can have pools on SSDs and NVMEs separated I don't care. But maybe ceph handles NVME disks differently internally?
No. When creating the OSD ceph-volume looks at /sys/class/block/DEVICE/queue/rotational to determine if it's an HDD (file contains 1) or not (file contains 0). If you need to distinguish between SSD and NVMe you can manually assign another device class to the OSDs. Regards -- Robert Sander Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin https://www.heinlein-support.de Tel: 030 / 405051-43 Fax: 030 / 405051-19 Amtsgericht Berlin-Charlottenburg - HRB 220009 B Geschäftsführer: Peer Heinlein - Sitz: Berlin