Problems booting ltsp clients under 10.04

[Nick Fenger]

Steve,

Had very similar issues with 10.04 and they were fixed by applying the
patch. Here were my steps:

 chroot /opt/ltsp/fati386 patch -p1 < disable-nbd-proxy.patch

 chroot /opt/ltsp/fati386 update-initramfs -u

 ltsp-update-kernels

 ltsp-update-image -b /opt/ltsp -a fati386


-Nick

On Mon, Aug 9, 2010 at 9:51 AM, Rippl, Steve <rippls at woodlandschools.org>wrote:

> Hi,
>
> We're having great difficulty getting all clients in an LTSP lab to
> boot up consistently, it appears to be related to the new nbd-proxy?
> Here's the report our tech that builds the LTSP servers for us gave
> me...
>
>
> =====
> When 2 or more switches are between client and server a failure to boot
> occurs before launching LDM about %50 of the time.  The frequency of the
> failure to boot is reduced by being connected to the server with only
> one intermediate switch but does not go away completely.  The following
> bugs seem to reference the same problem and indicate that it is
> nbd-proxy that is falling down during the boot process.
>
> https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/604314
> https://bugs.launchpad.net/ltsp/+bug/589034
>
> The latter of these references a patch that when applied disables the
> activation of the nbd-proxy during the client setup process.  My success
> rate for booting clients after applying this patch rises to about %70.
> Load seems to effect this condition adversely as well as speed and
> duplex transitions such as many 10/100 clients connecting to a server
> attached to a gigabit port. The clients in question are Atom based and
> include gigabit ethernet ports but are connected to 10/100 ports in the
> classroom.  Switches being used include HP Pro-curve edge products as
> well as a variety of unmanaged 10/100 5-8 port switches.
> =====
>
> We had none of these problems in 9.04.
>
> Are any of the developers listening on this aware of this and possibly
> working on it?  I have posted our experiences on Launchpad, but
> there's no indication of anything happening.  School starts here in
> about 4 weeks and this is bad enough that we're considering rolling
> back to 9.04.  There are nice new features in 10.04 I'd like to give
> folks access to, but I don't want folks to have to reboot clients
> multiple times to get them to come up...
>
> Thanks,
> Steve
>
> --
> Steve Rippl
> Technology Director
> Woodland Public Schools
> 360 225 9451 x326
>
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-- 
Nick Fenger
-Information Technology

Trillium Charter School
5420 N. Interstate Ave
Portland, OR 97217
(503) 285-3833
http://www.trilliumcharterschool.org
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