Re: containerised deployment cannot support lvm mode in ceph-volume

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On Fri, Mar 23, 2018 at 12:09 PM, Ning Yao <zay11022@xxxxxxxxx> wrote:
> 2018-03-23 19:00 GMT+08:00 Alfredo Deza <adeza@xxxxxxxxxx>:
>> On Fri, Mar 23, 2018 at 4:52 AM, Ning Yao <zay11022@xxxxxxxxx> wrote:
>>> Hi, all
>>>
>>> Currently, we want to move to ceph-volume by using lvm mode to
>>> bootstraps osd. However it seems now ceph-ansible disable the lvm
>>> method when enable containerized deployment. I wanna if docker does
>>> not support lvm yet, or for other considerations? As I know, we enable
>>> the privilege mode in container, it can access all device in the
>>> system /dev/ directory?
>>
>> The ceph-container project only supports regular partitions as it is
>> tied to ceph-disk.
>>
>> This is why ceph-ansible should not allow LVM for deploying
>> containers. Not sure when will full support for ceph-volume will
>> happen in containers.
>
> thanks, got it. So we need to make container image supporting
> ceph-volume first by adding something in ceph-container project,
> right?

That is part of it, yes. If you browse through the various shell
scripts in the ceph-container project, you will see that everything is
tied to ceph-disk which does not support LVM.

The other side of the effort means support in ceph-ansible, which
tries to aid in the deployment of containers, including the OSD
support. That
OSD support currently supports ceph-disk (therefore no LVM).

>
>>
>>>
>>>
>>> Regards
>>> Ning Yao
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