Hi Bertrand, Thanks!
No, I couldn't see /dev/loop0. Can you please guide me to create it? I didn't change dom0 configurations, it's default generated by yocto. I will append this "IMAGE_FSTYPES:append = " wic.gz”" in local.conf & will update you. Regards, Vipul Kumar On Thu, Aug 25, 2022 at 1:25 PM Bertrand Marquis <bertrand.marq...@arm.com> wrote: > Hi Vipul, > > > On 25 Aug 2022, at 08:31, Vipul Suneja <vsunej...@gmail.com> wrote: > > > > Hi Stefano, > > > > Thanks! > > > > As suggested, I changed the guest1.cfg file. Below are the contents of > config file > > > > kernel = "/home/root/Image" > > cmdline = "console=hvc0 earlyprintk=xen sync_console root=/dev/xvda" > > memory = "1024" > > name = "guest1" > > vcpus = 1 > > serial="pty" > > disk = [ > 'file:/home/root/xen-guest-image-minimal-raspberrypi4-64.ext3,xvda,w' ] > > vif=[ 'mac=00:11:22:66:88:22,bridge=xenbr0,type=netfront', ] > > > > Its failing with below logs: > > > > root@raspberrypi4-64:~# xl create -c guest1.cfg > > Parsing config from guest1.cfg > > Invalid parameter `type'. > > libxl: error: libxl_exec.c:117:libxl_report_child_exitstatus: > /etc/xen/scripts/block add [742] exited with error status 1 > > libxl: error: libxl_device.c:1265:device_hotplug_child_death_cb: script: > losetup /dev/loop0 /home/root/xen-guest-image-minimal-raspberrypi4-64.ext3 > failed > > libxl: error: libxl_create.c:1643:domcreate_launch_dm: Domain 1:unable > to add disk devices > > libxl: error: libxl_exec.c:117:libxl_report_child_exitstatus: > /etc/xen/scripts/block remove [793] exited with error status 1 > > libxl: error: libxl_device.c:1265:device_hotplug_child_death_cb: script: > /etc/xen/scripts/block failed; error detected. > > libxl: error: libxl_domain.c:1183:libxl__destroy_domid: Domain > 1:Non-existant domain > > libxl: error: libxl_domain.c:1137:domain_destroy_callback: Domain > 1:Unable to destroy guest > > libxl: error: libxl_domain.c:1064:domain_destroy_cb: Domain > 1:Destruction of domain failed > > I think you have a loop issue. > > Could you check if /dev/loop0 exists ? > > Did you change something on the dom0 linux configuration generated by > Yocto ? > > We are using Yocto on RPI4 here without any issue like that, only > difference with > your setup is that we generate a wic image to have a real disk image > instead of > using the ext3/ext4 one. > > Should be possible to do the same on your side by adding the following in > local.conf: > IMAGE_FSTYPES:append = " wic.gz” > > > > > Even after removing 'type=netfront' from vif it's failing. > > This option is only for hvm on x86, so you can remove it from your > configuration. > > > One more doubt here, could this mac address be a dummy or actual here? > > This is a dummy one you set for the guest network interface and this is > the Mac > address other devices on your network will see so it must be fully valid > (and > not conflicting with other devices on your network). > > Cheers > Bertrand > > > > > Regards, > > Vipul Kumar > > > > On Thu, Aug 25, 2022 at 2:36 AM Stefano Stabellini < > sstabell...@kernel.org> wrote: > > On Wed, 24 Aug 2022, Vipul Suneja wrote: > > > Hi Bertrand, > > > Thanks for your response! > > > > > > I builded the guest image on yocto kirkstone source which has FSTYPE > ext3. Guest image generated is > > > xen-guest-image-minimal-raspberrypi4-64.ext3. > > > Below is the content of guest.cfg file > > > > > > kernel = "/home/root/Image" > > > cmdline = "console=hvc0 earlyprintk=xen sync_console > root=/dev/xvda" > > > memory = "256" > > > name = "guest1" > > > vcpus = 1 > > > serial="pty" > > > disk = [ 'phy:/dev/loop0,xvda,w' ] > > > vif=[ 'mac=00:11:22:66:88:22,bridge=xenbr0,type=netfront', ] > > > > > > I am trying to mount xen-guest-image-minimal-raspberrypi4-64.ext3 to a > virtual device & then will run the guest VM by command "xl create -c > > > guest.cfg". But facing issue while trying to mount. > > > > You don't actually need to mount > > xen-guest-image-minimal-raspberrypi4-64.ext3 anywhere to use it to run > > your guest VM with "xl create". > > > > It is enough to do this instead, as Bertrand suggested: > > > > > disk=["file:/path/to/file/xen-guest-image-minimal-raspberrypi4-64.ext3,xvda,w"] > > > > No need to call losetup or mount. Just xl create -c. > > > > More answers below. > > > > > > > Regards, > > > Vipul Kumar > > > > > > On Wed, Aug 24, 2022 at 8:06 PM Bertrand Marquis < > bertrand.marq...@arm.com> wrote: > > > Hi Vipul, > > > > > > > On 24 Aug 2022, at 15:16, Vipul Suneja <vsunej...@gmail.com> > 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 > > > > It looks like either > > /home/root/xen-guest-image-minimal-raspberrypi4-64.ext3 doesn't exist or > > /dev/loop0 doesn't exist > > > > > > > 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 > > > > > > > > > > >
