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Re: [Linux-cluster] Re: If I have 5 GNBD server?



Fajar,

Thanks for you, quite clear.

Michael

On 8/26/05, Fajar A. Nugraha <fajar telkom co id> wrote:
> Michael wrote:
> 
> >Can anyone answer my question?
> >
> >
> >
> I don't think LVM cares what kind of storage it uses, as long as it's a
> block device.
> So theoretically, you can mix local disc, FC storage, GNBD, and ATOE and
> combine them using LVM. You might run into performance issues (GNBD are
> slower than FC disks) and startup issues (LVM has to start after cluster
> and gnbd-import successfuly start), but it should be possible.
> 
> The real question is WHY you want to do that.
> AFAIK, if you combine 5 gnbd from 5 gnbd servers into one LVM, and you
> are accessing a volume on that volume group, and one of the gnbd server
> dies (or hangs), gnbd import will wait forever until that server is back
> up. So you'll have five more single-point-of-failures.
> 
> Regards,
> 
> Fajar
> 
> >On 8/26/05, Michael <mikore li gmail com> wrote:
> >
> >
> >>Hi,
> >>
> >>If I have 5 gnbd servers in the network, each one export 1 block
> >>device, can I import all gnbd devices on each gfs client, and use lvm
> >>to manage them as 1 shared pool, then mkfs_gfs on it?
> >>
> >>Thanks,
> >>
> >>Michael
> >>
> >>
> >>
> >
> >
> >
> 
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