[Lustre-discuss] o2iblnd no resources

[Isaac Huang]

On Sat, Feb 02, 2008 at 12:29:07PM -0800, Kilian CAVALOTTI wrote:
> On Saturday 02 February 2008 00:42:47 Isaac Huang wrote:
> > > Here is patch for this problem (using FMR in o2iblnd)
> > > https://bugzilla.lustre.org/attachment.cgi?id=15144
> >
> > This is an experimental patch - nodes with the patch applied are not
> > interoperable with those without it. Please don't propagate the patch
> > to production systems.
> 
> Thanks for the explanation. Since the problem indeed occurs on a production 
> system, I'd rather keep experimental patches out of the way.
> 
> I assume that adding more RAM on the OSSes is likely to solve this problem, 
> right? If that's the case, I'd probably go this way, before the FMR patch 
> is landed.

It depends on the architectures of the OSSes - o2iblnd, and I believe
OFED too, can't use memory in ZONE_HIGHMEM. For example, on x86_64
where ZONE_HIGHMEM is empty, adding more RAM will certainly help.

Isaac