[ClusterLabs] LVM resource and DAS - would two resources off one DAS...

2017-07-27 Thread lejeczek 

hi fellas

I realise this might be quite specialized topic, as this 
regards hardware DAS(sas2) and LVM and cluster itself but 
I'm hoping with some luck an expert peeps over here and I'll 
get some or all the answers then.


question:
Can cluster manage two(or more) LVM resources which would be 
on/in same single DAS storage and have these resources(eg. 
one LVM runs on 1&2 the other LVM runs on 3&4) run on 
different nodes(which naturally all connect to that single DAS)?


Now, I guess this might be something many do already and 
many will say: trivial. In which case a few firm "yes" 
confirmations will mean - typical, just do it.
Or could it be something unusual and untested but 
might/should work when done with care and special "preparation"?


I understand that lots depends on what/how harwdare+kernel 
do things, but if possible(?) I'd leave it out for now and 
ask only the cluster itself - do you do it?


many thanks.
L.

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[ClusterLabs] Antw: LVM resource and DAS - would two resources off one DAS...

2017-07-27 Thread Ulrich Windl 
Hi!

I think it will work, because the cluster does not monitor the PVs or prtition 
or LUNs. It just checks whether you can activate the LVs (i.e.: the VG). That's 
what I know...

Regards,
Ulrich

>>> lejeczek  schrieb am 27.07.2017 um 15:05 in Nachricht
<636398a2-e8ea-644b-046b-ff12358de...@yahoo.co.uk>:
> hi fellas
> 
> I realise this might be quite specialized topic, as this 
> regards hardware DAS(sas2) and LVM and cluster itself but 
> I'm hoping with some luck an expert peeps over here and I'll 
> get some or all the answers then.
> 
> question:
> Can cluster manage two(or more) LVM resources which would be 
> on/in same single DAS storage and have these resources(eg. 
> one LVM runs on 1&2 the other LVM runs on 3&4) run on 
> different nodes(which naturally all connect to that single DAS)?
> 
> Now, I guess this might be something many do already and 
> many will say: trivial. In which case a few firm "yes" 
> confirmations will mean - typical, just do it.
> Or could it be something unusual and untested but 
> might/should work when done with care and special "preparation"?
> 
> I understand that lots depends on what/how harwdare+kernel 
> do things, but if possible(?) I'd leave it out for now and 
> ask only the cluster itself - do you do it?
> 
> many thanks.
> L.
> 
> ___
> Users mailing list: Users@clusterlabs.org 
> http://lists.clusterlabs.org/mailman/listinfo/users 
> 
> Project Home: http://www.clusterlabs.org 
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf 
> Bugs: http://bugs.clusterlabs.org 





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Re: [ClusterLabs] Antw: LVM resource and DAS - would two resources off one DAS...

2017-07-27 Thread Kristián Feldsam 
In this case I prefer to use 
http://www.storagereview.com/lsi_syncro_cs_ha_das_storage_overview 
 which you 
can buy on ebay for about 1000USD

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> On 27 Jul 2017, at 15:20, Ulrich Windl  
> wrote:
> 
> Hi!
> 
> I think it will work, because the cluster does not monitor the PVs or 
> prtition or LUNs. It just checks whether you can activate the LVs (i.e.: the 
> VG). That's what I know...
> 
> Regards,
> Ulrich
> 
 lejeczek  schrieb am 27.07.2017 um 15:05 in Nachricht
> <636398a2-e8ea-644b-046b-ff12358de...@yahoo.co.uk>:
>> hi fellas
>> 
>> I realise this might be quite specialized topic, as this 
>> regards hardware DAS(sas2) and LVM and cluster itself but 
>> I'm hoping with some luck an expert peeps over here and I'll 
>> get some or all the answers then.
>> 
>> question:
>> Can cluster manage two(or more) LVM resources which would be 
>> on/in same single DAS storage and have these resources(eg. 
>> one LVM runs on 1&2 the other LVM runs on 3&4) run on 
>> different nodes(which naturally all connect to that single DAS)?
>> 
>> Now, I guess this might be something many do already and 
>> many will say: trivial. In which case a few firm "yes" 
>> confirmations will mean - typical, just do it.
>> Or could it be something unusual and untested but 
>> might/should work when done with care and special "preparation"?
>> 
>> I understand that lots depends on what/how harwdare+kernel 
>> do things, but if possible(?) I'd leave it out for now and 
>> ask only the cluster itself - do you do it?
>> 
>> many thanks.
>> L.
>> 
>> ___
>> Users mailing list: Users@clusterlabs.org 
>> http://lists.clusterlabs.org/mailman/listinfo/users 
>> 
>> Project Home: http://www.clusterlabs.org 
>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf 
>> Bugs: http://bugs.clusterlabs.org 
> 
> 
> 
> 
> 
> ___
> Users mailing list: Users@clusterlabs.org
> http://lists.clusterlabs.org/mailman/listinfo/users
> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org

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