[Gluster-users] gluster volume + lvm : recommendation or neccessity ?

[Ric Wheeler]

On 10/11/2017 09:50 AM, ML wrote:
> Hi everyone,
>
> I've read on the gluster & redhat documentation, that it seems recommended to 
> use XFS over LVM before creating & using gluster volumes.
>
> Sources :
> https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/Formatting_and_Mounting_Bricks.html 
>
> http://gluster.readthedocs.io/en/latest/Administrator%20Guide/Setting%20Up%20Volumes/ 
>
>
> My point is : do we really need LVM ?
> For example , on a dedicated server with disks & partitions that will not 
> change of size, it doesn't seems necessary to use LVM.
>
> I can't understand clearly wich partitioning strategy would be the best for 
> "static size" hard drives :
>
> 1 LVM+XFS partition = multiple gluster volumes
> or 1 LVM+XFS partition = 1 gluster volume per LVM+XFS partition
> or 1 XFS partition = multiple gluster volumes
> or 1 XFS partition = 1 gluster volume per XFS partition
>
> What do you use on your servers ?
>
> Thanks for your help! :)
>
> Quentin

Hi Quentin,

Gluster relies on LVM for snapshots - you won't get those unless you deploy on LVM.

Regards,
Ric