[Vm-dev] Re: Cog Rump Xen unikernel
btc at openinworld.com
Sat Dec 12 06:57:22 UTC 2015
Here is the recipe for my first successful build and run through to an error...
StackVM.unikernel: could not find any display driver
This is done under 32-bit Debian 8 Jessie.
Attached is StackRumpXenUnikernelConfig.st
# Built the Rumprun Platform
$ mkdir -p cogunikernel
$ git clone http://repo.rumpkernel.org/rumprun
$ cd rumprun
$ git submodule update --init
$ CC=cc ./build-rr.sh xen
>> toolchain tuple: i486-rumprun-netbsdelf
>> cc wrapper: i486-rumprun-netbsdelf-gcc
>> installed to "/home/ben/Repos/cogunikernel/rumprun/./rumprun"
# Generated Cog VM sources
$ cd ../../cogunikernel
$ git clone https://github.com/pharo-project/pharo-vm.git
$ cd pharo-vm/image
$ ./pharo-ui generator.image
Tools > File Browser
Filed in StackRumpXenUnikernelConfig.st
From class comment, evaluated...
# Built the StackVM and StackVM.unikernel
$ bash build.sh
# Tested them...
$ cd ../results
> bash: ./StackVM: cannot execute binary file: Exec format error
Good. That was the expected result.
$ rumprun xen -i StackVM.unikernel
> StackVM.unikernel: could not find any display driver
# Stop unikernel machine running, from another terminal...
$ xl list
$ xl destroy rumprun-StackVM.unikernel
Now I basically just poked, cut and slashed the config until it could
compile and boot up the unikernel, without regard for what that may
break. Making the VM *actually* work is bigger step that for now is
beyond me, but I'll have a bite at it. Really my motivation in doing
this after I stumbled on the rumprun tutorial, was I wanted to crack
the seal on it to interest others capable :). I'd be interested if
the above recipe is successful for others.
* incorporate rumprun as an auto-built third party library, rather
than outside, perhaps using git submodule like the rump kernel already
does (if these can be nested)
* determine how to deal with different rumprun toolchains (depending
on which platform the target)
* move the baking step from the build script to the generated CMake
* determine how to deal with lack of display
* determine how an image file might be passed to the VM - maybe baking
the VM and image into a ram disk (?)
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