[ceph-users] Re: db_devices doesn't show up in exported osd service spec

9 Feb 2021

      Hi David,

Could you show me an example of OSD service spec YAML
to workaround it by specifying size?

Thanks!
Tony
________________________________________
From: David Orman <ormandj@corenode.com>
Sent: February 8, 2021 04:06 PM
To: Tony Liu
Cc: ceph-users@ceph.io
Subject: Re: [ceph-users] Re: db_devices doesn't show up in exported osd service spec

Adding ceph-users:

We ran into this same issue, and we used a size specification to workaround for now.

Bug and patch:

https://tracker.ceph.com/issues/49014
https://github.com/ceph/ceph/pull/39083

Backport to Octopus:

https://github.com/ceph/ceph/pull/39171

On Sat, Feb 6, 2021 at 7:05 PM Tony Liu <tonyliu0592@hotmail.com<mailto:tonyliu0592@hotmail.com>> wrote:
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<http://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<mailto:jens.hyllegaard@softdesign.dk>>
Sent: Thursday, February 4, 2021 6:31 AM
To: ceph-users@ceph.io<mailto: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<mailto:eblock@nde.ag>>
Sent: 3. februar 2021 11:40
To: Tony Liu <tonyliu0592@hotmail.com<mailto:tonyliu0592@hotmail.com>>
Cc: ceph-users@ceph.io<mailto: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<mailto: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<mailto:eblock@nde.ag>>
Sent: Tuesday, February 2, 2021 2:20 AM
To: ceph-users@ceph.io<mailto: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<mailto: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<mailto:ceph-users@ceph.io> To unsubscribe send
an email to ceph-users-leave@ceph.io<mailto:ceph-users-leave@ceph.io>
_______________________________________________
ceph-users mailing list -- ceph-users@ceph.io<mailto:ceph-users@ceph.io> To unsubscribe send an
email to ceph-users-leave@ceph.io<mailto:ceph-users-leave@ceph.io>
_______________________________________________
ceph-users mailing list -- ceph-users@ceph.io<mailto:ceph-users@ceph.io> To unsubscribe send an
email to ceph-users-leave@ceph.io<mailto:ceph-users-leave@ceph.io>
_______________________________________________
ceph-users mailing list -- ceph-users@ceph.io<mailto:ceph-users@ceph.io> To unsubscribe send an
email to ceph-users-leave@ceph.io<mailto:ceph-users-leave@ceph.io>

ceph-users mailing list -- ceph-users@ceph.io<mailto:ceph-users@ceph.io>
To unsubscribe send an email to ceph-users-leave@ceph.io<mailto:ceph-users-leave@ceph.io>