Re: [Xen-devel] xc_domain_create

["Geoffrey Lefebvre" <geoffrey@xxxxxxxxx>]

Hi,

Interesting coincidence. I was just working on something similar. Here
is example code that I just cooked up to start a mini-os domain. Not
the best code since many things are hardcoded but it seems to work on
a mini-os domain with no devices apart from the xen emergency console.
Getting the devices going and adding the proper entries in xenstore
are left as an exercise to the reader :).

Also, there is no support for mem ballooning, you have to reserve some
memory when booting xen.

Hopefully this helps you a bit.

cheers,

geoffrey

On Sun, Aug 31, 2008 at 10:37 AM, Shaun R.
<mailinglists@xxxxxxxxxxxxxxxx> wrote:
> Can anybody show me a basic example of using this function to create a
> domain with the following config...
>
> ---------------------------------------------------------------------------------------------------
> kernel="/boot/vmlinux-2.6.16.29-11774"
> memory=256
> name="user1"
> vif=[ 'vifname=user1.0' , 'mac=FE:FD:CC:0F:87:45' ]
> dhcp=""
> disk=[
> 'tap:aio:/home/user1/disks/root_fs.img,sda1,w','tap:aio:/home/user1/disks/swap.img,sdb1,w'
> ]
> root="/dev/sda1 ro"
> extra=""
> ip="10.0.0.2"
> netmask="255.255.255.248"
> gateway="10.0.0.1"
> dhcp=""
> nfs_server=""
> --------------------------------------------------------------------------------------------------
>
> the xenctrl.h file shows this
>
> int xc_domain_create(int xc_handle,
>                    uint32_t ssidref,
>                    xen_domain_handle_t handle,
>                    uint32_t flags,
>                    uint32_t *pdomid);
>
>
> looks like i need to generate a ssidref, how can i do that?
>
> xen_domain_handle_t handle i assume is what gets set with the domain info i
> just created?
>
> I dont understand the flags, looking at other code it looks like this is
> where i need to pass all the config data but i'm unsure how.
>
> pdomid, not sure what this is for.
>
> If anybody can show me a basic example that would get me started in the
> right direction it would be much appreciated.
>
>
> ~Shaun
>
>
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>

Attachment: sample.c
Description: Text document

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