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Re: Porting xen on rpi4
- To: Vipul Suneja <vsuneja63@xxxxxxxxx>
- From: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
- Date: Wed, 24 Aug 2022 14:35:46 +0000
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- Delivery-date: Wed, 24 Aug 2022 14:36:12 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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- Thread-topic: Porting xen on rpi4
Hi Vipul,
> On 24 Aug 2022, at 15:16, Vipul Suneja <vsuneja63@xxxxxxxxx> wrote:
>
> Hi,
>
> I am porting xen hypervisor on rpi4 with yocto kirkstone sources. Followed
> the basic steps to build xen-image-minimal & xen-guest-image-minimal. I could
> flash sd card with xen minimal image & could see dom0 up. I copied "Image",
> "xen-guest-image-minimal" .ext3 file & guest.cfg to "/home/root". After that
> created a bridge with below step:
>
> killall -SIGUSR2 udhcpc
> brctl addbr xenbr0
> brctl addif xenbr0 eth0
> killall udhcpc
> udhcpc -R -b -p /var/run/udhcpc.xenbr0.pid -i xenbr0
>
> Could see the xenbr0 interface up.
> After that while mounting the guest file system it shows no such file or
> directory but the file is already there.
>
> [23:40:15] <Guest9046> root@raspberrypi4-64:~# ls -l
> [23:40:15] <Guest9046> -rw-r--r-- 1 root root 24652288 Mar 9
> 12:36 Image
> [23:40:15] <Guest9046> -rw-r--r-- 1 root root 247 Mar 9
> 12:37 guest1.cfg
> [23:40:15] <Guest9046> -rw-r--r-- 1 root root 868220928 Mar 9
> 12:39 xen-guest-image-minimal-raspberrypi4-64.ext3
> [23:40:15] <Guest9046> root@raspberrypi4-64:~# chmod 0777
> xen-guest-image-minimal-raspberrypi4-64.ext3
> [23:40:15] <Guest9046> root@raspberrypi4-64:~# ls -l
> [23:40:15] <Guest9046> -rw-r--r-- 1 root root 24652288 Mar 9
> 12:36 Image
> [23:40:15] <Guest9046> -rw-r--r-- 1 root root 247 Mar 9
> 12:37 guest1.cfg
> [23:40:15] <Guest9046> -rwxrwxrwx 1 root root 868220928 Mar 9
> 12:39 xen-guest-image-minimal-raspberrypi4-64.ext3
> [23:40:15] <Guest9046> root@raspberrypi4-64:~# losetup /dev/loop0
> xen-guest-image-minimal-raspberrypi4-64.ext3
> [23:40:15] <Guest9046> losetup: xen-guest-image-minimal-raspberrypi4-64.ext3:
> No such file or directory
> [23:40:15] <Guest9046> root@raspberrypi4-64:~# losetup /dev/loop0
> /home/root/xen-guest-image-minimal-raspberrypi4-64.ext3
> [23:40:15] <Guest9046> losetup:
> /home/root/xen-guest-image-minimal-raspberrypi4-64.ext3: No such file or
> directory
> [23:40:15] <Guest9046> root@raspberrypi4-64:~#
> [23:40:15] <Guest9046> root@raspberrypi4-64:~#
> [23:40:15] <Guest9046> root@raspberrypi4-64:~#
> [23:40:15] <Guest9046> root@raspberrypi4-64:~# losetup /dev/loop0
> /home/root/xen-guest-image-minimal-raspberrypi4-64.ext3
> [23:40:15] <Guest9046> losetup:
> /home/root/xen-guest-image-minimal-raspberrypi4-64.ext3: No such file or
> directory
Why do you want to mount the file system ?
Anyway this is not related to Xen, I guess you could start without xen and
still not manage to mount the file like that (linux configuration issue ?)
What is the content of you guest.cfg
How do you want to pass the guest root file system ?
Yocto should actually generate an img file and you could use it by having
something like this in your guest.cfg:
disk=["file:/home/root/guest1.img,xvda,w”]
Cheers
Bertrand
>
> Any input on this issue will be really helpful, expecting your response.
>
> Thanks & Regards,
> Vipul Kumar
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