2017-11-03 7:59 GMT+01:00 Brad Hubbard <bhubbard@xxxxxxxxxx>:
On Fri, Nov 3, 2017 at 4:04 PM, Linh Vu <vul@xxxxxxxxxxxxxx> wrote:
> Hi all,
>
>
> Back in Luminous Dev and RC, I was able to do this:
>
>
> `ceph osd crush class create myclass`
This was removed as part of https://github.com/ceph/ceph/pull/16388
It looks like the set-device-class command is the replacement or equivalent.
$ ceph osd crush class ls
[
"ssd"
]
$ ceph osd crush set-device-class myclass 0 1
$ ceph osd crush class ls
[
"ssd",
"myclass"
]
With the caveat that the "ceph osd crush set-device-class" command only works on existing OSD's which already have a default assigned class so you cannot plan/create your classes before adding some OSD's first.
The "ceph osd crush class create" command could be run without any OSD's configured.
Kind regards,
Caspar
>
>
> so I could utilise the new CRUSH device classes feature as described here:
> http://ceph.com/community/new-luminous-crush-device-classes/
>
>
>
> and in use here:
> http://blog-fromsomedude.rhcloud.com/2017/05/16/ Luminous-series-CRUSH-devices- class/
>
>
> Now I'm on Luminous LTS 12.2.1 and my custom device classes are still seen
> in:
>
>
> `ceph osd crush class ls`
>
>
> `ceph osd tree` and so on. The cluster is working fine and healthy.
>
>
> However, when I run `ceph osd crush class create myclass2` now, it tells me
> the command doesn't exist anymore.
>
>
> Are we not meant to create custom device classes anymore?
>
>
> Regards,
>
> Linh
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph. com
>
--
Cheers,
Brad
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