Re: [Xen-devel] Almost working iSCSI booting, need advice

[Stefan de Konink <skinkie@xxxxxxxxx>]

jpranevich@xxxxxxxxxxx schreef:
> Without these changes, or at least similar changes, I was never
> getting the hotplug scripts called in my config. Maybe it's because
> I'm using pygrub. Maybe it's some other reason. I traced the
> offending code to bootloader:
I guess here is where the problem is... I never used pygrub before it. 
So if you are hacking in PyGrub you might be in the right place ;)
> If you tell me where in the python code the hotplug scripts are
> supposed to get called from, I'll add copious debugging around that
> point in stock Xen to see what it's doing in my configuration and
> report back or provide a fix.
You ask smart questions... but I don't know 'how' PyGrub does this. And 
actually I have no clue were in the actual booting process PyGrub steps in.
> There are no problems with your block-iscsi scripts. Those are
> perfectly fine. They need tweaked a bit because the kernel
> maintainers keep changing the format and layout of /sys between
> versions, but it should be a simple matter to select the right file
> location. (It seems to be one of two.) I was going to send you a
> patch to do this once I got further along.
;) Yes... I Know ;) The Libvirt guys know it too...

What I asked to the open-iscsi.org guys was to copy there utility 
functions to seperate library something like libopen-iscsi.so and create 
a program that does the /sys operations based on their code.
(It could be interesting to make a block script in plain C, I have 
investigated this route for libvirt storage pools as well... but that 
one has an extra 'issue', it should be able to do the 'tap' interface 
too...)

Stefan

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