Re: [Xen-devel] compilation errors for remus sch_queue for 2.6.31.13-pvops

[Brendan Cully <brendan@xxxxxxxxx>]

On Thursday, 17 June 2010 at 14:18, Brendan Cully wrote:
> On Thursday, 17 June 2010 at 10:00, Andreas Olsowski wrote:
> > Hi there.
> > 
> > I run Xen 4.0 with 2.6.31.13 pvops dom0 kernel.
> > My kernel sources reside in /usr/src/linux-2.6-xen, the xen sources in
> > /usr/src/xen-4.0.0.
> > 
> > Since i did not compile a kernel in the xen sources (just did make xen
> > tools install-xen install-tools) it does not automagically compile the
> > kmod stuff for remus.
> > So if i wanted to compile it while compiling xen i have to edit the
> > Makefile of tools/remus/kmod:
> > KERNELDIR = /usr/src/linux-2.6-xen
> ...
> > The linux/config.h part leads me to believe that this module was
> > intended for 2.6.18, but since xen is "shipped" with 2.6.31 this should
> > not be. Especially since the fault tolerance via remus is one of the
> > biggest features of 4.0.
> > 
> > Due to a lack of documenation i am unable to compile the kernel module.
> > Shouldnt the module be part of the kernel and not of xen anyway?
> > 
> > How should i proceed, is there some documentation on how to compile the
> > sch_queue module for 2.6.31+ kernels?
> > One user on #xen on freenode told me that he had a running 2.6.32 kernel
> > with working remus but he used his distribution packages, so its not
> > impossible i guess.
> > 
> > On a side note: Why does the README in the remus directory point to the
> > remus project website? That hasnt even been updated since last year and
> > just has way too little information.
> > I would be willing to write more detailed stuff for the xensource wiki
> > once i get remus to work.
> 
> You're right, Remus shipped with Xen 4.0.0 only supports linux
> 2.6.18. xen-unstable has the patches required to run Remus on pvops
> dom0. I'll ask Keir to backport those patches to 4.0. They should be
> safe and should apply cleanly, since they don't touch non-Remus code.

xen-4.0-testing.hg now contains the patches to support Remus with
pvops dom0 (thanks Keir!)

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