Add dev to comment. With 15.2.8, when apply OSD service spec, db_devices is gone. Here is the service spec file. ========================================== service_type: osd service_id: osd-spec placement: hosts: - ceph-osd-1 spec: objectstore: bluestore data_devices: rotational: 1 db_devices: rotational: 0 ========================================== Here is the logging from mon. The message with "Tony" is added by me in mgr to confirm. The audit from mon shows db_devices is gone. Is there anything in mon to filter that out based on host info? How can I trace it? ========================================== audit 2021-02-07T00:45:38.106171+0000 mgr.ceph-control-1.nxjnzz (mgr.24142551) 4020 : audit [DBG] from='client.24184218 -' entity='client.admin' cmd=[{"prefix": "orch apply osd", "target": ["mon-mgr", ""]}]: dispatch cephadm 2021-02-07T00:45:38.108546+0000 mgr.ceph-control-1.nxjnzz (mgr.24142551) 4021 : cephadm [INF] Marking host: ceph-osd-1 for OSDSpec preview refresh. cephadm 2021-02-07T00:45:38.108798+0000 mgr.ceph-control-1.nxjnzz (mgr.24142551) 4022 : cephadm [INF] Saving service osd.osd-spec spec with placement ceph-osd-1 cephadm 2021-02-07T00:45:38.108893+0000 mgr.ceph-control-1.nxjnzz (mgr.24142551) 4023 : cephadm [INF] Tony: spec: <bound method ServiceSpec.to_json of DriveGroupSpec(name=osd-spec->placement=PlacementSpec(hosts=[HostPlacementSpec(hostname='ceph-osd-1', network='', name='')]), service_id='osd-spec', service_type='osd', data_devices=DeviceSelection(rotational=1, all=False), db_devices=DeviceSelection(rotational=0, all=False), osd_id_claims={}, unmanaged=False, filter_logic='AND', preview_only=False)> audit 2021-02-07T00:45:38.109782+0000 mon.ceph-control-3 (mon.2) 25 : audit [INF] from='mgr.24142551 10.6.50.30:0/2838166251' entity='mgr.ceph-control-1.nxjnzz' cmd=[{"prefix":"config-key set","key":"mgr/cephadm/spec.osd.osd-spec","val":"{\"created\": \"2021-02-07T00:45:38.108810\", \"spec\": {\"placement\": {\"hosts\": [\"ceph-osd-1\"]}, \"service_id\": \"osd-spec\", \"service_name\": \"osd.osd-spec\", \"service_type\": \"osd\", \"spec\": {\"data_devices\": {\"rotational\": 1}, \"filter_logic\": \"AND\", \"objectstore\": \"bluestore\"}}}"}]: dispatch audit 2021-02-07T00:45:38.110133+0000 mon.ceph-control-1 (mon.0) 107 : audit [INF] from='mgr.24142551 ' entity='mgr.ceph-control-1.nxjnzz' cmd=[{"prefix":"config-key set","key":"mgr/cephadm/spec.osd.osd-spec","val":"{\"created\": \"2021-02-07T00:45:38.108810\", \"spec\": {\"placement\": {\"hosts\": [\"ceph-osd-1\"]}, \"service_id\": \"osd-spec\", \"service_name\": \"osd.osd-spec\", \"service_type\": \"osd\", \"spec\": {\"data_devices\": {\"rotational\": 1}, \"filter_logic\": \"AND\", \"objectstore\": \"bluestore\"}}}"}]: dispatch audit 2021-02-07T00:45:38.152756+0000 mon.ceph-control-1 (mon.0) 108 : audit [INF] from='mgr.24142551 ' entity='mgr.ceph-control-1.nxjnzz' cmd='[{"prefix":"config-key set","key":"mgr/cephadm/spec.osd.osd-spec","val":"{\"created\": \"2021-02-07T00:45:38.108810\", \"spec\": {\"placement\": {\"hosts\": [\"ceph-osd-1\"]}, \"service_id\": \"osd-spec\", \"service_name\": \"osd.osd-spec\", \"service_type\": \"osd\", \"spec\": {\"data_devices\": {\"rotational\": 1}, \"filter_logic\": \"AND\", \"objectstore\": \"bluestore\"}}}"}]': finished ========================================== Thanks! Tony

-----Original Message----- From: Jens Hyllegaard (Soft Design A/S) <jens.hyllegaard@softdesign.dk> Sent: Thursday, February 4, 2021 6:31 AM To: ceph-users@ceph.io Subject: [ceph-users] Re: db_devices doesn't show up in exported osd service spec

Hi.

I have the same situation. Running 15.2.8 I created a specification that looked just like it. With rotational in the data and non-rotational in the db.

First use applied fine. Afterwards it only uses the hdd, and not the ssd. Also, is there a way to remove an unused osd service. I manages to create osd.all-available-devices, when I tried to stop the autocreation of OSD's. Using ceph orch apply osd --all-available-devices --unmanaged=true

I created the original OSD using the web interface.

Regards

Jens -----Original Message----- From: Eugen Block <eblock@nde.ag> Sent: 3. februar 2021 11:40 To: Tony Liu <tonyliu0592@hotmail.com> Cc: ceph-users@ceph.io Subject: [ceph-users] Re: db_devices doesn't show up in exported osd service spec

How do you manage the db_sizes of your SSDs? Is that managed automatically by ceph-volume? You could try to add another config and see what it does, maybe try to add block_db_size?

Zitat von Tony Liu <tonyliu0592@hotmail.com>:

...

All mon, mgr, crash and osd are upgraded to 15.2.8. It actually fixed another issue (no device listed after adding host). But this issue remains. ``` # cat osd-spec.yaml service_type: osd service_id: osd-spec placement: host_pattern: ceph-osd-[1-3] data_devices: rotational: 1 db_devices: rotational: 0

# ceph orch apply osd -i osd-spec.yaml Scheduled osd.osd-spec update...

# ceph orch ls --service_name osd.osd-spec --export service_type: osd service_id: osd-spec service_name: osd.osd-spec placement: host_pattern: ceph-osd-[1-3] spec: data_devices: rotational: 1 filter_logic: AND objectstore: bluestore ``` db_devices still doesn't show up. Keep scratching my head...

Thanks! Tony

...

-----Original Message----- From: Eugen Block <eblock@nde.ag> Sent: Tuesday, February 2, 2021 2:20 AM To: ceph-users@ceph.io Subject: [ceph-users] Re: db_devices doesn't show up in exported osd service spec

Hi,

I would recommend to update (again), here's my output from a 15.2.8 test cluster:

host1:~ # ceph orch ls --service_name osd.default --export service_type: osd service_id: default service_name: osd.default placement: hosts: - host4 - host3 - host1 - host2 spec: block_db_size: 4G data_devices: rotational: 1 size: '20G:' db_devices: size: '10G:' filter_logic: AND objectstore: bluestore

Regards, Eugen

Zitat von Tony Liu <tonyliu0592@hotmail.com>:

...

Hi,

When build cluster Octopus 15.2.5 initially, here is the OSD service spec file applied. ``` service_type: osd service_id: osd-spec placement: host_pattern: ceph-osd-[1-3] data_devices: rotational: 1 db_devices: rotational: 0 ``` After applying it, all HDDs were added and DB of each hdd is created on SSD.

Here is the export of OSD service spec. ``` # ceph orch ls --service_name osd.osd-spec --export service_type: osd service_id: osd-spec service_name: osd.osd-spec placement: host_pattern: ceph-osd-[1-3] spec: data_devices: rotational: 1 filter_logic: AND objectstore: bluestore ``` Why db_devices doesn't show up there?

When I replace a disk recently, when the new disk was installed and zapped, OSD was automatically re-created, but DB was created on HDD, not SSD. I assume this is because of that missing db_devices?

I tried to update service spec, the same result, db_devices doesn't show up when export it.

Is this some known issue or something I am missing?

Thanks! Tony _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io

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