Re: db_devices doesn't show up in exported osd service spec

[Eugen Block <eblock@xxxxxx>]

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@xxxxxxxxxxx>:

> 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@xxxxxx>
> > Sent: Tuesday, February 2, 2021 2:20 AM
> > To: ceph-users@xxxxxxx
> > Subject:  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@xxxxxxxxxxx>:
> >
> > > 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
> > > _______________________________________________
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> > > email to ceph-users-leave@xxxxxxx
> >
> >
> > _______________________________________________
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> > email to ceph-users-leave@xxxxxxx


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