[Gluster-users] Multiple bricks on same node

[Gandalf Corvotempesta]

You have to specify the correct order of brick forming the same replica set

In example:

host1:brick1 host2:brick2 host3:brick3 host1:brick4 host2:brick5
host3:brick6

What you did is forming a replica set with all bricks on the same host,
thus an host failure will bring your cluster down

Il 4 apr 2017 8:27 PM, "Valerio Luccio" <valerio.luccio at nyu.edu> ha scritto:

> I apologize if this has been answered before, I haven't found a satisfying
> explanation.
> I've just set up a new gluster. We have 4 servers and each has 3 RAIDS
> with separate raid controller. I wanted to create one giant data space and
> tried:
>
> $ gluster volume create Data replica 2 transport tcp host1:/brick1/data
> host1:/brick2/data host1:/brick3/data [...] host4:/brick3/data
>
> This gave me the error message:
>
> volume create: MRIData: failed: Multiple bricks of a replicate volume are
> present on the same server. This setup is not optimal. Use 'force' at the
> end of the command if you want to override this behavior.
>
> The 'force' option allowed me to create a volume and everything seems to
> work. The question is, whys is this not optimal ? What are the potential
> pitfalls ? I don't want to find myself with an unusable data space.
> Also, does it make a difference the order in which I specify the bricks ?
>
> Thanks,
>
> --
> Valerio Luccio             (212) 998-8736
> Center for Brain Imaging   4 Washington Place, Room 158
> New York University        New York, NY 10003
>
>     "In an open world, who needs windows or gates ?"
>
>
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