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Re: [Xen-devel] xc_domain_create

To: "Shaun R." <mailinglists@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] xc_domain_create
From: "Geoffrey Lefebvre" <geoffrey@xxxxxxxxx>
Date: Sun, 31 Aug 2008 13:46:06 -0700
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
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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.



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-"
> 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=""
> netmask=""
> gateway=""
> 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
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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