Hi,
On 08.08.25 15:37, Robert Sander wrote:
As can be seen a third DB volume has been added to sdc
and the OSD uses all of the 18TB of sdf.
When adding a completely new disk a fourth DB volume gets created on sdb
and the new OSD on sdl uses all of the 18TB.
Something must have been changed between reef and squid, not for the
better.
No I changed the drivegroup spec to explicitely name the DB devices:
service_type: osd
service_id: hdd2025
service_name: osd.hdd2025
placement:
label: osd2025
spec:
block_db_size: 100GB
data_devices:
rotational: true
size: '16TB:'
db_devices:
paths:
- /dev/sdb
- /dev/sdc
This still works as expected on 18.2.7: adding a new 18TB HDD adds
another DB volume on sdb and a new OSD.
On 19.2.3 the orchestrator now does nothing. It does not touch the new
HDD (which is listed as available in "ceph orch device ls"). It does not
create a DB volume on the HDD (as before) or on the SSD as instructed.
The is a real bad regression.
With this behaviour of the orchestrator I am not able to recommend Ceph
19 to my customers. Appr half of the run Ceph on HDD with the DB volumes
on external drives.
Adding or replacing disks becomes a manual task again including creating
the DB volumes. This was definitely better in Ceph 18.
Regards
--
Robert Sander
Heinlein Consulting GmbH
Schwedter Str. 8/9b, 10119 Berlin
http://www.heinlein-support.de
Tel: 030 / 405051-43
Fax: 030 / 405051-19
Zwangsangaben lt. §35a GmbHG:
HRB 220009 B / Amtsgericht Berlin-Charlottenburg,
Geschäftsführer: Peer Heinlein -- Sitz: Berlin
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