Eugen: I've tried similar approaches in the past and it seems like it
won't work like that.  I have to zap the entire journal disk.  Also I plan
to use the configuration tunable for making the bluestore partition (wal,
db) larger than the default

On Mon, Aug 6, 2018 at 2:30 PM, Eugen Block <[email protected]> wrote:

> Hi,
>
>  How then can one upgrade journals to BlueStore when there is more than one
>> journal on the same disk?
>>
>
> if you're using one SSD for multiple OSDs the disk probably has several
> partitions. So you could just zap one partition at a time and replace the
> OSD. Or am I misunderstanding the question?
>
> Regards,
> Eugen
>
>
> Zitat von Bastiaan Visser <[email protected]>:
>
>
> As long as your fault domain is host (or even rack) you're good, just take
>> out the entire host and recreate all osd's on it.
>>
>>
>> ----- Original Message -----
>> From: "Robert Stanford" <[email protected]>
>> To: "ceph-users" <[email protected]>
>> Sent: Monday, August 6, 2018 8:39:07 PM
>> Subject: [ceph-users] Upgrading journals to BlueStore: a conundrum
>>
>> According to the instructions to upgrade a journal to BlueStore (
>> http://docs.ceph.com/docs/master/rados/operations/bluestore-migration/),
>> the OSD that uses the journal is destroyed and recreated.
>>
>>  I am using SSD journals, and want to use them with BlueStore.  Reusing
>> the
>> SSD requires zapping the disk (ceph-disk zap).  But this would take down
>> all OSDs that use this journal, not just the one-at-a-time that I destroy
>> and recreate when following the upgrade instructions.
>>
>>  How then can one upgrade journals to BlueStore when there is more than
>> one
>> journal on the same disk?
>>
>>  R
>>
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>
>
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