[libvirt] Fwd: Re: need your help about virito vmchannel
FYI for the list. I haven't looked at this yet. Matt Original Message Subject: Re: need your help about virito vmchannel Date: Tue, 4 May 2010 18:00:02 +0530 From: Amit Shah amit.s...@redhat.com To: Matthew Booth mbo...@redhat.com CC: Jianlin Liu jia...@redhat.com On (Tue) May 04 2010 [13:18:30], Matthew Booth wrote: On 04/05/10 12:48, Jianlin Liu wrote: Hi Matthew, I want to create a virtio vm channel in my guest. So I add the followiong to my guest xml file: channel type='pty' target type='virtio' name='org.linux-kvm.port.0'/ /channel Jianlin, While I wrote the libvirt-vmchannel glue, I'm not actually that familiar with vmchannel itself. I've cc'd Amit, who hopefully might recognise this problem and tell me how to fix it ;) Amit, Any idea what's going on here? Yes: Then I try to start the guest: # virsh start winxp error: Failed to start domain winxp error: internal error Process exited while reading console log output: char device redirected to /dev/pts/4 char device redirected to /dev/pts/5 qemu-kvm: -device virtio-serial-pci,id=virtio-serial0,max_ports=0,vectors=0,bus=pci.0,addr=0x5: Device 'virtio-serial-pci' could not be initialized With max_ports=0, the virtio-serial device doesn't get created and hence this error. Amit -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Fwd: Re: need your help about virito vmchannel
On 05/04/2010 12:38 PM, Matthew Booth wrote: FYI for the list. I haven't looked at this yet. Matt Original Message Subject: Re: need your help about virito vmchannel Date: Tue, 4 May 2010 18:00:02 +0530 From: Amit Shah amit.s...@redhat.com To: Matthew Booth mbo...@redhat.com CC: Jianlin Liu jia...@redhat.com On (Tue) May 04 2010 [13:18:30], Matthew Booth wrote: On 04/05/10 12:48, Jianlin Liu wrote: Hi Matthew, I want to create a virtio vm channel in my guest. So I add the followiong to my guest xml file: channel type='pty' target type='virtio' name='org.linux-kvm.port.0'/ /channel Jianlin, While I wrote the libvirt-vmchannel glue, I'm not actually that familiar with vmchannel itself. I've cc'd Amit, who hopefully might recognise this problem and tell me how to fix it ;) Amit, Any idea what's going on here? Yes: Then I try to start the guest: # virsh start winxp error: Failed to start domain winxp error: internal error Process exited while reading console log output: char device redirected to /dev/pts/4 char device redirected to /dev/pts/5 qemu-kvm: -device virtio-serial-pci,id=virtio-serial0,max_ports=0,vectors=0,bus=pci.0,addr=0x5: Device 'virtio-serial-pci' could not be initialized With max_ports=0, the virtio-serial device doesn't get created and hence this error. Amit I saw this issue as well, when I started adding channel support to virt-install (since stalled, but mostly complete). Adding a channel device creates an implicit virtio-serial controller which defaults to ports = 0. Since ports = 0 is useless, maybe we should just defer to the qemu default for that case (which is 31 according to http://fedoraproject.org/wiki/Features/VirtioSerial ). We should probably find a way to do the same thing for the 'vectors' value as well, although 0 is valid value there. - Cole -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Fwd: Re: need your help about virito vmchannel
On Tue, May 04, 2010 at 01:08:53PM -0400, Cole Robinson wrote: On 05/04/2010 12:38 PM, Matthew Booth wrote: FYI for the list. I haven't looked at this yet. Matt Original Message Subject: Re: need your help about virito vmchannel Date: Tue, 4 May 2010 18:00:02 +0530 From: Amit Shah amit.s...@redhat.com To: Matthew Booth mbo...@redhat.com CC: Jianlin Liu jia...@redhat.com On (Tue) May 04 2010 [13:18:30], Matthew Booth wrote: On 04/05/10 12:48, Jianlin Liu wrote: Hi Matthew, I want to create a virtio vm channel in my guest. So I add the followiong to my guest xml file: channel type='pty' target type='virtio' name='org.linux-kvm.port.0'/ /channel Jianlin, While I wrote the libvirt-vmchannel glue, I'm not actually that familiar with vmchannel itself. I've cc'd Amit, who hopefully might recognise this problem and tell me how to fix it ;) Amit, Any idea what's going on here? Yes: Then I try to start the guest: # virsh start winxp error: Failed to start domain winxp error: internal error Process exited while reading console log output: char device redirected to /dev/pts/4 char device redirected to /dev/pts/5 qemu-kvm: -device virtio-serial-pci,id=virtio-serial0,max_ports=0,vectors=0,bus=pci.0,addr=0x5: Device 'virtio-serial-pci' could not be initialized With max_ports=0, the virtio-serial device doesn't get created and hence this error. Amit I saw this issue as well, when I started adding channel support to virt-install (since stalled, but mostly complete). Adding a channel device creates an implicit virtio-serial controller which defaults to ports = 0. Since ports = 0 is useless, maybe we should just defer to the qemu default for that case (which is 31 according to Yep, if we're automatically creating a virtio controller, we should just let QEMU choose the default for it, or make libvirt use the QEMU default Daniel -- |: Red Hat, Engineering, London-o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org-o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
