[K12OSN] K12Linux EL6 Preliminary Feasibility Assessment
burke at thealmquists.net
burke at thealmquists.net
Sat May 21 01:05:46 UTC 2011
I know I didn't expect you to ever get i586 clients working on EL5. I think anyone who wants that is better off using ubuntu/debian, or ltsp 4 on el5.
"Warren Togami Jr." <warren at togami.com> wrote:
>I did some quick hacking of LTSP upstream on SL6 in order to determine
>what works and what is broken.
>* Installed /opt/ltsp/i386 with lots of error messages.
>* WORKING: Client Login to GNOME desktop.
>* WORKING: Remote sound, Youtube video played with audio in sync.
>BAD, BUT I KNOW HOW TO FIX
>* LOTS OF ERROR MESSAGES DURING BOOT
>* nc syntax seems to have changed (?)
>* qemu-kvm changed to discourage direct use. SDL-mode longer supported.
> This means ltsp-vmclient cannot be used anymore as method for rapid
>thin client testing. I suspect this could be worked around by manually
>modifying a virt-manager VM configuration to connect to ltspbr0 and PXE
>* nbd-server changed, need to redo how LTSP handles both the client and
>server side of NBD.
>* Wow. My documentation on k12linux.org sucks a lot.
>BAD, NOT SURE HOW TO FIX YET
>* BROKEN: Something is seriously wrong with pxelinux. I was able to
>manually boot only by typing in parameters.
>* BROKEN: K12LINUX themed ldm is broken.
>* BROKEN: Remote USB storage (ltspfs)
>* CONFUSING: Various parts of GNOME desktop like PackageKit are confused
>because ConsoleKit has no awareness of ssh logins, manifesting in
>various broken dialogs and annoying pop-up login screen during every
>* BROKEN: Crippling blocker issue with locked screens, need to talk to
>GNOME developers ...
>BAD, LIMITATIONS OF EL6 HARDWARE SUPPORT
>i686 with PAE minimum means the majority of existing LTSP client
>hardware are unsupported. Additionally, EL6 kernel lacks nbd.ko.
>Partial Solution: Kernel-only replacement for /opt/ltsp/i386. i686
>without PAE with nbd.ko included would support *more* hardware, but
>still a large percentage of LTSP client hardware that is i586 will not work.
>Full Solution: Rebuild 500+ client packages to i586 or use Debian for
>/opt/ltsp/i386. Either option is bad because of significant effort to
>initially create it, and long-term support issues.
>This is significantly more broken than I expected. Worrisome are the
>broken parts of GNOME, because we likely cannot get patches into
>upstream EL6, and any patched packages that we ship ourselves will be a
>long term maintenance burden.
>I will do a little more feasibility testing later, but I already can say
>that this is looking like too much work for the previous cost estimate.
>In short: Yes, this appears feasible. But it will be a LOT of work to
>make it an acceptable solution.
>warren at togami.com
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>K12OSN at redhat.com
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