Correct, since your OSDs are already created, Ceph won’t do anything.
Maybe think about adding a DB size parameter if you don’t want the
entire disk to be consumed by the existing DBs.
Zitat von Alan Murrell <Alan@xxxxxxxx>:
Sorry, I just got on this list and am asking a number of questions… ☹
It was suggested in one of my other threads to create and apply a
spec file that would have cephadm put the DB for rotational drives
onto SSD when it creates the OSD on those drives. I came up with he
following spec file:
--- START ---
service_type: osd
service_id: osd_spec_hdd
placement:
host_pattern: '*'
data_devices:
rotational: 1
db_devices:
rotational: 0
model: 'Samsung SSD 990 PRO 1TB'
limit: 1
---
service_type: osd
service_id: osd_spec_ssd
placement:
host_pattern: '*'
data_devices:
model: 'KINGSTON SEDC1500M1920G'
--- END ---
But when I run ‘ceph orch apply osd -i ./osd_spec.yml --dry-run’, I
get the following output:
--- START ---
WARNING! Dry-Runs are snapshots of a certain point in time and are bound
to the current inventory setup. If any of these conditions change, the
preview will be invalid. Please make sure to have a minimal
timeframe between planning and applying the specs.
####################
SERVICESPEC PREVIEWS
####################
+---------+------+--------+-------------+
|SERVICE |NAME |ADD_TO |REMOVE_FROM |
+---------+------+--------+-------------+
+---------+------+--------+-------------+
################
OSDSPEC PREVIEWS
################
+---------+------+------+------+----+-----+
|SERVICE |NAME |HOST |DATA |DB |WAL |
+---------+------+------+------+----+-----+
+---------+------+------+------+----+-----+
--- END ---
Which seems to indicate that nothing would be applied, but I am not
sure if that is because my spec file is wrong or if it is because my
rotational drives already have OSDs (and I have migrated their
DB/WAL to the SSDs)?
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