Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Fri, Feb 28, 2014 at 02:12:30AM +, Ian Campbell wrote: On Wed, 2014-02-26 at 15:01 +, Daniel P. Berrange wrote: Yep, if ARM has a PV console, then we'd need to add tiny bit to the XML to allow us to configure that explicitly, similar to how we do for KVM's virtio-console support. Do you mean I need to add something to the XML config snippet, or I need to add some special handling in the XML parser/consumer? I've grepped around the virtio-console stuff and I'm none the wiser. Opps, yes, I should have explained this better, since our docs here are about as clear as mud. With traditional x86 paravirt Xen, we just have the plain paravirt console devices console type='pty' target type='xen'/ /console With x86 fullvirt Xen/KVM/QEMU, the console type just defaults to being a serial port so you would usually just add serial type='pty' /serial and then libvirt would automatically add a console with console type='pty' target type='serial'/ /console With x86 fullvirt KVM, we also have support for virtio which is done using console type='pty' target type='virtio'/ /console So actually this leads me to ask what kind of console Arm fullvirt Xen guests actually have ? If they just use the traditional Xen paravirt console, then we just need to make sure that this works for them by default: console type='pty' target type='xen'/ /console If there's a different type of console device that's not related to the Xen paravirt console device, then we'd need to invent a new target type='xxx'/ value for Arm. Regards, Daniel -- |: http://berrange.com -o-http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Fri, 28 Feb 2014, Daniel P. Berrange wrote: On Fri, Feb 28, 2014 at 02:12:30AM +, Ian Campbell wrote: On Wed, 2014-02-26 at 15:01 +, Daniel P. Berrange wrote: Yep, if ARM has a PV console, then we'd need to add tiny bit to the XML to allow us to configure that explicitly, similar to how we do for KVM's virtio-console support. Do you mean I need to add something to the XML config snippet, or I need to add some special handling in the XML parser/consumer? I've grepped around the virtio-console stuff and I'm none the wiser. Opps, yes, I should have explained this better, since our docs here are about as clear as mud. With traditional x86 paravirt Xen, we just have the plain paravirt console devices console type='pty' target type='xen'/ /console With x86 fullvirt Xen/KVM/QEMU, the console type just defaults to being a serial port so you would usually just add serial type='pty' /serial and then libvirt would automatically add a console with console type='pty' target type='serial'/ /console With x86 fullvirt KVM, we also have support for virtio which is done using console type='pty' target type='virtio'/ /console So actually this leads me to ask what kind of console Arm fullvirt Xen guests actually have ? If they just use the traditional Xen paravirt console, then we just need to make sure that this works for them by default: console type='pty' target type='xen'/ /console If there's a different type of console device that's not related to the Xen paravirt console device, then we'd need to invent a new target type='xxx'/ value for Arm. It is just the traditional Xen paravirt console. -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Fri, 2014-02-28 at 14:29 +, Stefano Stabellini wrote: On Fri, 28 Feb 2014, Daniel P. Berrange wrote: So actually this leads me to ask what kind of console Arm fullvirt Xen guests actually have ? If they just use the traditional Xen paravirt console, then we just need to make sure that this works for them by default: console type='pty' target type='xen'/ /console If there's a different type of console device that's not related to the Xen paravirt console device, then we'd need to invent a new target type='xxx'/ value for Arm. It is just the traditional Xen paravirt console. I tried the above,which AIUI should work, but it fails with the same cannot find character device null error. I'll investigate properly next week. Ian. -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Wed, 2014-02-26 at 15:01 +, Daniel P. Berrange wrote: Yep, if ARM has a PV console, then we'd need to add tiny bit to the XML to allow us to configure that explicitly, similar to how we do for KVM's virtio-console support. Do you mean I need to add something to the XML config snippet, or I need to add some special handling in the XML parser/consumer? I've grepped around the virtio-console stuff and I'm none the wiser. Thanks, Ian. -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Wed, Feb 26, 2014 at 02:55:13PM +, Ian Campbell wrote: On Wed, 2014-02-26 at 15:00 +0100, Olaf Hering wrote: On Wed, Feb 26, Ian Campbell wrote: On Wed, 2014-02-26 at 12:37 +, Daniel P. Berrange wrote: On Wed, Feb 26, 2014 at 12:34:17PM +, Ian Campbell wrote: Currently virsh console fails with: Connected to domain libvirt-test Escape character is ^] error: internal error: cannot find character device null That'll be because no console or serial device is listed in your config above I expect. Also looks like bogus error handling in the console API, not checking for null. Thanks. I've just tried (inside devices.../...): console tty='/dev/pts/5'/ and console type='pty' target port='0'/ /console which I gleaned from http://libvirt.org/drvxen.html but neither seem to do the trick (and the first ones use of an explicit pts looks odd to me...). I learned yesterday this should be serial instead of console, maybe it fixes also your case. My understanding was that this was for HVM guests, whereas ARM has a PV console but I suppose I should try it anyway. I've got a flight to catch so it'll be a few days I expect. Yep, if ARM has a PV console, then we'd need to add tiny bit to the XML to allow us to configure that explicitly, similar to how we do for KVM's virtio-console support. Regards, Daniel -- |: http://berrange.com -o-http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Wed, 2014-02-26 at 15:00 +0100, Olaf Hering wrote: On Wed, Feb 26, Ian Campbell wrote: On Wed, 2014-02-26 at 12:37 +, Daniel P. Berrange wrote: On Wed, Feb 26, 2014 at 12:34:17PM +, Ian Campbell wrote: Currently virsh console fails with: Connected to domain libvirt-test Escape character is ^] error: internal error: cannot find character device null That'll be because no console or serial device is listed in your config above I expect. Also looks like bogus error handling in the console API, not checking for null. Thanks. I've just tried (inside devices.../...): console tty='/dev/pts/5'/ and console type='pty' target port='0'/ /console which I gleaned from http://libvirt.org/drvxen.html but neither seem to do the trick (and the first ones use of an explicit pts looks odd to me...). I learned yesterday this should be serial instead of console, maybe it fixes also your case. My understanding was that this was for HVM guests, whereas ARM has a PV console but I suppose I should try it anyway. I've got a flight to catch so it'll be a few days I expect. Thanks, Ian. -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Wed, Feb 26, Ian Campbell wrote: On Wed, 2014-02-26 at 12:37 +, Daniel P. Berrange wrote: On Wed, Feb 26, 2014 at 12:34:17PM +, Ian Campbell wrote: Currently virsh console fails with: Connected to domain libvirt-test Escape character is ^] error: internal error: cannot find character device null That'll be because no console or serial device is listed in your config above I expect. Also looks like bogus error handling in the console API, not checking for null. Thanks. I've just tried (inside devices.../...): console tty='/dev/pts/5'/ and console type='pty' target port='0'/ /console which I gleaned from http://libvirt.org/drvxen.html but neither seem to do the trick (and the first ones use of an explicit pts looks odd to me...). I learned yesterday this should be serial instead of console, maybe it fixes also your case. Olaf -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
