John R. Dunning wrote: > From: Bryan Green <[EMAIL PROTECTED]> > A longer term solution is to do some combination of remodularizing vfs and > recasting the lustre stuff so as to depend less on getting its fingers into > the guts. I once spent some time looking into that, and I do believe it's > possible, but it would take some work, and would really need to be done in > concert with the rest of the core kernel guys, and I ran out of time to pursue > it. In the meantime, the more the gentoo community can resist the temptation > to patch the kernel (at least the vfs parts of it), the easier it will be to > add lustre.
> Based on what you've said, I wouldn't fool around with SLES, I'd just figure > out what close-to-vanilla kernel you want to start from (picking one you think > you can live with for a while) and do some part of what I described above. > You might have a somewhat easier time of it if you started with 2.6.18, as I > believe there's a cfs-supplied patchset for that one. If you want to start > from a gentoo 2.6.18 one, I suspect your task will be to start with vanilla, > make that work, then work out how to re-apply the gentoo patches. Re getting > cfs to help, my bet would be that you'll have an easier time getting the > gentoo community to create patches that are amenable to going on top of a > lustre-ized vanilla kernel (and relying on cfs to support vanilla kernels) > than you will getting cfs to generate patches to go on top of gentoo. If you > watch the lustre lists, you'll see more people asking for vanilla than are > asking for gentoo. I've just got a couple comments on this. * The gentoo-sources patches are almost all upstream and based on the W.X.Y.Z "stable release" patchsets, except for 2-3 cases that probably aren't relevant to clusters. As a result, Gentoo folks would be reasonably well off just running vanilla-sources, which groups them in with everyone else wanting Lustre on a vanilla kernel. * Normally I would recommend hardened-sources for anything resembling a server, but you should have all your nodes and file servers blocked off from the Internet anyway so that's a non-issue. Thanks, Donnie
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