Re: Marking a OSD a new in the OSDMap

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On Wed, Dec 31, 2014 at 8:20 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
> On 12/31/2014 05:54 PM, Andrey Korolyov wrote:
>> On Wed, Dec 31, 2014 at 7:34 PM, Wido den Hollander <wido@xxxxxxxx> wrote:
>>> Hi,
>>>
>>> Is there a way to set a OSD to exists,new in the OSDMap? I want to
>>> re-install a OSD and re-use the ID and it's key.
>>>
>>> I know I can remove the OSD and re-add it, but that triggers balancing
>>> and I want to prevent that by simply marking the OSD a new and booting
>>> it with a freshly formatted XFS filesystem.
>>>
>>
>> Yes, you can call mkfs with existing UUID: --osd-uuid xxx.
>>
>
> Ah, but will that also mark the OSD as new in the OSDMap? Will it
> receive all old maps?
>

Yes, technically I do not understand why most replacement guides are
going through out-in plus optional rm-add procedure, it works
perfectly with freshly formatted filestore using existing uuid and
key.
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