[Gluster-users] deployment

[Paolo Supino]

Hi Keith

  There's a section on the website that gives the configuration for a
unify/AFR but doesn't say whether AFR goes above or below unify. At the
moment I don't need the whole 2TB and I can live with half of it, but I
might down the road need the extra space. If and when that happens is it
possible to break the unify/AFR and move everything to only unify without
deleting data (not that will be an obstacle, see below)?
  Can anyone answer the question: does AFR goes above or below unify?

  I don't think that the data stored on the gluster volume will be mission
critical: it 's genomic data that is being processed on the cluster. I think
that the worst case scenario in case of brick loss will be that a few hours
of processing will be lost.



--
TIA
Paolo




On Wed, Sep 17, 2008 at 12:22 PM, Keith Freedman <freedman at freeformit.com>wrote:

> Some other things to consider:
>
> the unify is a good idea to make use of all your space.  However, with that
> many nodes, your probability of a node failing is high.
> so just be aware, if one of the nodes fails, whatever data stored on that
> node will be lost.
>
> If you dont need the full 2TB's then I'd suggest using AFR.
>
> I *think* you can run afr UNDER unify, so you would create one unify brick
> with half the machines, another with the other half and AFR across them.
> but I'm not sure.. it may be that AFR has to be above Unify
>
> of course, if you don't care about the data really, i.e. it's all backup or
> working space or temp files, etc.. then no need to AFR them.
>
> Keith
>
> At 01:52 AM 9/17/2008, Paolo Supino wrote:
>
>> Hi Raghavendra
>>
>>  I like your reply and definitely will give it a try. There's nothing I
>> hate mre than wasted infrastructure ...
>>
>>
>>
>>
>>
>>
>> --
>> TIA
>> Paolo
>>
>>
>> On Wed, Sep 17, 2008 at 8:13 AM, Raghavendra G <<mailto:
>> raghavendra.hg at gmail.com>raghavendra.hg at gmail.com> wrote:
>> Hi Paolo,
>>
>> One of the configurations is to have glusterfs as server on each of the
>> nodes exporting a brick. Each node should also have glusterfs  running as
>> client having unify translator, unifying all the servers.
>>
>> regards,
>>
>> On Tue, Sep 16, 2008 at 10:34 PM, Paolo Supino <<mailto:
>> paolo.supino at gmail.com>paolo.supino at gmail.com> wrote:
>> Hi
>>
>>  I have a small HPC cluster of 36 nodes (1 head, 35 compute). Each of the
>> nodes has a 1 65GB (~ 2.2TB combined) volume that isn't being used. I
>> thought of using a parallel filesystem in order to put this unused space
>> into good use. The configuration I had in mind is: All nodes will act a
>> bricks and all nodes will act as clients. I have no experience with Gluster
>> and want to know what people on the mailing list thought of the idea,
>> deployment scenario, pros and cons etc ... Any reply will help :-)
>>
>>
>>
>> --
>> TIA
>> Paolo
>>
>>
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>>
>>
>>
>> --
>> Raghavendra G
>>
>> A centipede was happy quite, until a toad in fun,
>> Said, "Prey, which leg comes after which?",
>> This raised his doubts to such a pitch,
>> He fell flat into the ditch,
>> Not knowing how to run.
>> -Anonymous
>>
>>
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>
>
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