Re: A few GFS newbie questions: journals, etc

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On Wed, Jul 06, 2005 at 09:17:32AM -0500, Jason Lanclos wrote:
> > A simpler method will be create a NEW LUN, scan it, pvcreate, add it to 
> > existing VG with vgextend, and extend your volume lvextend. At least you 
> > don't have to mess with existing partitions.
> 
> Ok.. what happens when you reach the max LUNs or max partitions???
> And I can only imagine the administration nightmare it would be to manage with several
> volumes spread over multiple LUNs. The whole point of a SAN is to simplify management of data storage.
> And what about copy/swap? Spreading a volume over multiple LUNs would make using this feature of the SAN impossible / very
> dangerous to do while volumes are mounted.
> So.. One Volume, One LUN, One partition is the easiest way.
> There are prolly a thousand different ways to "make it work",
> but I wouldn't consider that part of the whole "Red Hat Enterprise Linux" concept. 

Just out of curiousity - if you're using your array to do volume management
anyway - why use lvm at all?

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