[Nix-dev] xen on nixos

[Marco Maggesi]

Hi Jan,

thank you for your answer  (BTW: I was a little distracted by other
tasks and I didn't notice this message until now).

I'm trying again to install xen but I still have problems:

Following the usual instructions I get the following error:

   builder for `/nix/store/bmr08239ljmcbws3xm6wvsmgp3mz4a1n-linux-2.6.32.24-xen-179eca5'
failed

Then I added the following line to configuratio.nix

  boot.kernelPackages = pkgs.linuxPackages_3_2_xen;

but then I get another error:

Checking that all programs call by absolute paths in udev rules exist ... FAIL
/etc/xen/scripts/blktap is called in udev rules but not installed by udev
builder for `/nix/store/vbqrjkgha77ik3gwxghfx91bxnag3dqd-udev-rules.drv'
failed with exit code 1

Does anybody have a working xen-enabled configuration.nix that works?

Thanks again,
Marco

2012/9/2 Jan Malakhovski <oxij at oxij.org>:
> Hi Marco,
>
> This happens because xend hangs at startup.
> Try applying patches from this pull request for nixpkgs (not merged into master for a month without a reason):
> https://github.com/NixOS/nixpkgs/pull/93
> Pull request comments and changeset comments elaborate on the problem.
>
> Best regards,
>   Jan
>
> On Fri, 24 Aug 2012 11:06:29 +0200
> Marco Maggesi <maggesi at math.unifi.it> wrote:
>
>> Hi,
>>
>> I'm trying to setup a xen on nixos.  I added the following lines to
>> configuration.nix:
>>
>>   boot.kernelPackages = pkgs.linuxPackages_3_2_xen;
>>   virtualisation.xen.enable = true;
>>   virtualisation.xen.domain0MemorySize = 512;
>>
>> nixos-rebuild works without problems and I can see xend running:
>>
>>   # ps -u root | grep xend
>>   2296 ?        00:00:00 .xend-wrapped
>>   2451 ?        00:00:00 .xend-wrapped
>>   2452 ?        00:00:00 .xend-wrapped
>>   2454 ?        00:00:48 .xend-wrapped
>>
>> However, xm do not work:
>>
>>   # xm list
>>   Error: Unable to connect to xend: No such file or directory. Is xend running?
>>
>> Looking at the output of
>>   # strace xm list
>> the problem seems to be related to the creation of the communication socket
>> (/var/run/xend/xmlrpc.sock)
>>
>> Can somebody already solved this?
>>
>> Thanks,
>> Marco
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