Re: [libvirt] [Qemu-devel] virtio serial device problem

On 05/09/2013 04:07 PM, Li Zhang wrote: > On 2013年05月08日 23:53, fred.konrad(a)greensocs.com wrote: >>> On 05/07/2013 07:50 PM, Paolo Bonzini wrote: >>>> Il 07/05/2013 09:20, Li Zhang ha scritto: >>>>> Hi all, >> Hi, >>>>> When we use the latest version of QEMU to build ovirt, >>>>> we get this error reported from libvirt. >>>> What QEMU commit is this? >>> b3e6d591b05538056d665572f3e3bbfb3cbb70e7 >> This commit is from 05/29 no? >> >> there were issues with that. But it should be fixed. >> >> Do you still have the command-line issue with the last git? >> >> See commit 80270a19685dd20eda017b0360c743b3e3ed6f57 > Hi Fred, > > This patch is to change bus which can be compatible with old version, right? > But I saw the current name is still different from old version. > > The current name is: "virtio-serial-bus0.0" > The old version is: "virtio-serial0.0" > > Is it possible to change it back to the old name? This is what the most recent qemu produces: bus: pci type PCI dev: virtio-serial-pci, id "virtio-serial0" ioeventfd = on vectors = 2 class = 0x780 indirect_desc = on event_idx = on max_ports = 31 addr = 03.0 romfile = <null> rombar = 1 multifunction = off command_serr_enable = on class Class 0780, addr 00:03.0, pci id 1af4:1003 (sub 1af4:0003) bar 0: i/o at 0xffffffffffffffff [0x1e] bar 1: mem at 0xffffffffffffffff [0xffe] bus: virtio-bus type virtio-pci-bus dev: virtio-serial-device, id "" max_ports = 31 bus: virtio-serial0.0 type virtio-serial-bus dev: virtserialport, id "channel0" chardev = charchannel0 nr = 1 name = "com.redhat.rhevm.vdsm" port 1, guest off, host off, throttle off The device layout is new, the bus name is old - "virtio-serial0.0", everything should be ok now.

> Thanks. :) > --Li >> Thanks, >> Fred >> >>>> It might have been fixed already. >>> Hm. From what I see, it is all correct from the qemu side, the problem is >>> in libvirt which does not know about "virtio-pci-bus" yet. >>> >>> >>> >>>> Paolo >>>> >>>>> qemu-system-ppc64: -device >>>>> virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm: >>>>> >>>>> >>>>> Bus 'virtio-serial0.0' is full >>>>> qemu-system-ppc64: -device >>>>> virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm: >>>>> >>>>> >>>>> Bus 'virtio-serial0.0' not found >>>>> >>>>> Libvirt helps create QEMU command line and put virtserialport device to >>>>> bus virtio-serial0.0. >>>>> For latest version of QEMU, the bus type is changed. >>>>> >>>>> (qemu) info qtree >>>>> bus: main-system-bus >>>>> type System >>>>> dev: spapr-pci-host-bridge, id "" >>>>> index = 0 >>>>> buid = 0x800000020000000 >>>>> liobn = 0x80000000 >>>>> mem_win_addr = 0x100a0000000 >>>>> mem_win_size = 0x20000000 >>>>> io_win_addr = 0x10080000000 >>>>> io_win_size = 0x10000 >>>>> msi_win_addr = 0x10090000000 >>>>> irq 0 >>>>> bus: pci >>>>> type PCI >>>>> dev: virtio-serial-pci, id "virtio-serial0" >>>>> ioeventfd = on >>>>> vectors = 2 >>>>> class = 0x780 >>>>> indirect_desc = on >>>>> event_idx = on >>>>> max_ports = 31 >>>>> addr = 03.0 >>>>> romfile = <null> >>>>> rombar = 1 >>>>> multifunction = off >>>>> command_serr_enable = on >>>>> class Class 0780, addr 00:03.0, pci id 1af4:1003 (sub >>>>> 1af4:0003) >>>>> bar 0: i/o at 0xffffffffffffffff [0x1e] >>>>> bar 1: mem at 0xffffffffffffffff [0xffe] >>>>> bus: virtio-serial0.0 >>>>> type virtio-pci-bus >>>>> dev: virtio-serial-device, id "" >>>>> max_ports = 31 >>>>> bus: virtio-serial-bus.0 >>>>> type virtio-serial-bus >>>>> dev: virtserialport, id "channel1" >>>>> chardev = charchannel1 >>>>> nr = 2 >>>>> name = "org.qemu.guest_agent.0" >>>>> port 2, guest off, host off, throttle off >>>>> dev: virtserialport, id "channel0" >>>>> chardev = charchannel0 >>>>> nr = 1 >>>>> name = "com.redhat.rhevm.vdsm" >>>>> port 1, guest off, host off, throttle off >>>>> >>>>> >>>>> But we tried to replace virtio-serial0.0 with virtio-serial-bus.0, >>>>> SLOF crashes. It still doesn't work at all. >>>>> >>>>> Does anyone know how to use virtserialport in QEMU command line? >>>>> If configuration is changed in QEMU, libvirt also needs to change it >>>>> accordingly. >>>>> >>>>> Thanks. :) >>>>> --Li >>>>> >>>>> >>>>> >>> -- >>> Alexey Kardashevskiy >>> IBM OzLabs, LTC Team >>> >>> e-mail: aik(a)au1.ibm.com >>> notes: Alexey Kardashevskiy/Australia/IBM >>> >>> >>>