Re: Is it possible to have One Ceph-OSD-Daemon managing more than one OSD

[Karan Singh <karan.singh@xxxxxx>]

Hi vikrant

Yes , its possible to have this , but if you follow best practices its not recommended.

Under this scenario , if you have let suppose 5 disks tied to one OSD daemon  and by any reason if the OSD daemon stops working , you would loose all 5 drives in a row.

Good to know the reason for this setup , why you really wants this ??

Regards

karan

On 13 Feb 2014, at 09:37, Ashish Chandra <mail.ashishchandra@xxxxxxxxx> wrote:

Hi,

 With Ceph, an OSD is generally one Ceph ceph-osd daemon for one storage drive within a host machine. If your host has multiple storage drives, you may map one ceph-osd daemon for each drive.

But , in your condition what I would suggest that make a volume group out of all physical hard drives and create a logical volume of roughly the same size as of your volume group , and use it as one single osd.

I have tried this and it works for me.

Thanks and Regards

Ashish Chandra

On Wed, Feb 12, 2014 at 11:33 PM, Vikrant Verma <vikrantverma99@xxxxxxxxx> wrote:

yes, I want to use multiple hard drives with a single OSD.

Is it possible to have it?

Regards,

Vikrant

On Wed, Feb 12, 2014 at 10:14 PM, Loic Dachary <loic@xxxxxxxxxxx> wrote:

On 12/02/2014 12:28, Vikrant Verma wrote:
> Hi All,
>
> I have one quick question -
>
> Is it possible to have One Ceph-OSD-Daemon managing more than one Object Storage Device in a Ceph  Cluster?

Hi,

Do you want to use multiple hard drives with a single OSD ?

Cheers

> Regards,
> Vikrant
>
>
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>

--
Loïc Dachary, Artisan Logiciel Libre


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