Re: [linux-lvm] HA Fileserver configuration recommendation sought.

[Garrick Staples <garrick@usc.edu>]

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On Fri, Nov 19, 2004 at 05:36:26PM -0800, Dan Stromberg alleged:
> > > My understanding is that IBM will only support GPFS on IBM hardware...
> > 
> > Nor is it really FOSS.
> 
> I see.  Is it kind of like the Sun Java or Mozilla licenses?

Last I checked, which has been while now, it was binary-only download; built
for only a few specific RH kernels.

Checking now, it's up on developerworks with a BSD license, but I don't
actually see any released files.

I'm half-way sure someone is going to correct me here :)

 
> > Ultimately, it seems to me that GFS over clustered LVM is the way to go; though
> > all the bits don't seem to be quite in place just yet.
> 
> What's this "clustered LVM" thing?  Is it the same as (or built upon)
> NBD/ENBD?  Does it have the 2 terabyte or 16 terabyte limits?  Google
> just turns up some mailing list hits at the top - is there a "stable"
> release of CLVM yet?

Cluster extensions for LVM.  Given shared storage, a few configs, and running
clvmd, you can activate LVs on multiple machines at once.  This is great for
GFS, where it replaces the gfs "pools".

http://sources.redhat.com/cluster/

As I said, not all of the right bits seem to be in place yet.  But I expect
RHE4 to be very capable in this department.

-- 
Garrick Staples, Linux/HPCC Administrator
University of Southern California

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