[PVE-User] Ceph: Some trouble creating OSD with journal on a sotware raid device...

Brian :: bc at iptel.co
Fri Dec 16 09:58:52 CET 2016


This is probably by design..

On Thu, Dec 15, 2016 at 11:48 AM, Marco Gaiarin <gaio at sv.lnf.it> wrote:
>
> Sorry, i came back to this topic because i've done some more tests.
>
> Seems that 'pveceph' tool have some trouble creating OSD with journal
> on ''nonstandard'' partition, for examply on a MD device.
>
> A command like:
>
>         pveceph createosd /dev/sde --journal_dev /dev/md4
>
> fail mysteriously (OSD are added to the cluster, out and down, but on
> the node even the service get not created, eg, there's nothing to
> restart).
> Disks get partitioned/formatted (/dev/sde, but also /dev/md4).
>
>
> If instead i create on the device a GPT partition, for example of type
> Linux, i can do:
>
>         pveceph createosd /dev/sde --journal_dev /dev/md4p1
>
> and creation of the OSD work flawlessy, with only a single warning
> emitted:
>
>         WARNING:ceph-disk:Journal /dev/md4p1 was not prepared with ceph-disk. Symlinking directly.
>
> But journal work as expected.
>
>
> I make a note. Thanks.
>
> --
> dott. Marco Gaiarin                                     GNUPG Key ID: 240A3D66
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>
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