[ceph-users] Altering crush-failure-domain

Kees Meijs kees at nefos.nl
Mon Mar 4 23:14:37 PST 2019


Thanks guys.

Regards,
Kees

On 04-03-19 22:18, Smith, Eric wrote:
> This will cause data migration.
>
> -----Original Message-----
> From: ceph-users <ceph-users-bounces at lists.ceph.com> On Behalf Of Paul Emmerich
> Sent: Monday, March 4, 2019 2:32 PM
> To: Kees Meijs <kees at nefos.nl>
> Cc: Ceph Users <ceph-users at lists.ceph.com>
> Subject: Re: [ceph-users] Altering crush-failure-domain
>
> Yes, these parts of the profile are just used to create a crush rule.
> You can change the crush rule like any other crush rule.
>
>
> Paul
>
> --
> Paul Emmerich
>
> Looking for help with your Ceph cluster? Contact us at https://croit.io
>
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> On Mon, Mar 4, 2019 at 8:13 PM Kees Meijs <kees at nefos.nl> wrote:
>> Hi Cephers,
>>
>> Documentation on http://docs.ceph.com/docs/master/rados/operations/erasure-code/ states:
>>
>> Choosing the right profile is important because it cannot be modified after the pool is created: a new pool with a different profile needs to be created and all objects from the previous pool moved to the new.
>>
>>
>> Right, that makes sense. However, is it possible to "migrate" crush-failure-domain from osd to host, to rack and so on without copying pools?
>>
>> Regards,
>> Kees
>>
>> --
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