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[libvirt-users] when save the domain, the following errors occured
by Wangkai (Kevin,C) 10 Apr '13

10 Apr '13

Hi, I have create one vm by libvirt api, And I goto virsh, when I doing save the domain, the following errors occurred: virsh # save demo2 /home/wk/libvirt/demo2.save error: Failed to save domain demo2 to /home/wk/libvirt/demo2.save error: internal error unable to send file handle 'migrate': No file descriptor supplied via SCM_RIGHTS virsh # list Id Name State ---------------------------------------------------- 18 demo2 running What was the problem? I cannot find it. Thanks, Kevin.

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[libvirt-users] Faulty manual?
by Daniele Testa 09 Apr '13

09 Apr '13

Hi, Look under examples: http://builder.virt-tools.org/artifacts/libvirt-virshcmdref/html/sect-attac… (root@h2)-(/)# virsh attach-disk vps_99 /dev/nbd2 vdb --address pci:0000.00.11.0 --persistent *error: command 'attach-disk' doesn't support option --address* (root@h2)-(/)# virsh --version 0.7.5 Is someone playing a trick on me? Regards, Daniele

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[libvirt-users] can remote libvirt applications make non-blocking API calls
by arvind viswanathan 09 Apr '13

09 Apr '13

Hi, I wanted to check if event loop integration was supported even for remote applications using libvirt. My application would like to make non-blocking calls and also recv asynchronous notification remotely. Can some one point out if its supported. thanks Arvind

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[libvirt-users] (no subject)
by arvind viswanathan 09 Apr '13

09 Apr '13

I wanted to check if event loop integration was supported even for remote applications using libvirt. My application would like to make non-blocking calls and also recv asynchronous notification remotely. Can some one point out if its supported. thanks

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[libvirt-users] Filesystem passthrough of a Lustre mounted directory
by Tatiana Kichkaylo 09 Apr '13

09 Apr '13

Hi, I am trying to pass a Lustre directory mounted on the host to the guest. I can pass a local directory in just fine when starting an instance via virsh. I can execute the qemu command from libvirt's logs (dropping –S flag) directly, and passing the Lustre mounted directory also works (but the network complains about different MAC address). However, when I start an instance using virsh, the mount inside the guest succeeds, and ls works sometimes, but everything else (cat, touch, actual edit) on any file in the mounted directory gives "Identifier removed" after some delay. Is libvirt doing something beyond just calling qemu that can cause this problem? And how do I get around it? The host is RedHat 6.1, libvirt 1.0.3, qemu 1.4.50. Thanks, Tatiana The command pulled out from the libvirt's log: LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none \ /usr/local/bin/qemu-system-x86_64 \ -name i3e -M pc-0.14 -S \ -cpu SandyBridge,+pdpe1gb,+osxsave,+dca,+pcid,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme \ -enable-kvm -m 2048 -smp 1,sockets=1,cores=1,threads=1 \ -uuid ccc66436-8535-472e-8397-eee52d01cffe -no-user-config -nodefaults \ -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/i3e.monitor,server,nowait \ -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew \ -no-kvm-pit-reinjection -no-shutdown -kernel /var/lib/nova/instances/instance-0000003d/kernel \ -initrd /var/lib/nova/instances/instance-0000003d/ramdisk \ -append root=/dev/vda \ -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \ -drive file=/var/lib/nova/instances/instance-0000003d/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none \ -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \ -fsdev local,security_model=passthrough,id=fsdev-fs0,path=/mnt/lustre/ \ -device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=testfs,bus=pci.0,addr=0x3 \ -chardev file,id=charserial0,path=/var/lib/nova/instances/instance-0000003d/console.log \ -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 \ -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 \ -netdev tap,fd=30,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:39:23:6f,bus=pci.0,addr=0x4 \ -vnc 127.0.0.1:3 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6

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[libvirt-users] Problem with net-define using Open vSwitch bridge
by Will Dennis 09 Apr '13

09 Apr '13

Hi all, I used "net-define" to create a network to use to attach VMs to an Open vSwitch bridge. The net-define worked fine, I can see the network in "net-list" (I set it to started and to autostart) but when I try to attach a new VM's NIC to this network (via virt-manager), I'm getting the following traceback: Unable to complete install: 'Unable to add bridge vl10-ovsbr0 port vnet0: Operation not supported' Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/create.py", line 1943, in do_install guest.start_install(False, meter=meter) File "/usr/lib/python2.7/site-packages/virtinst/Guest.py", line 1249, in start_install noboot) File "/usr/lib/python2.7/site-packages/virtinst/Guest.py", line 1317, in _create_guest dom = self.conn.createLinux(start_xml or final_xml, 0) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 2606, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: Unable to add bridge vl10-ovsbr0 port vnet0: Operation not supported I'm going to assume the problem is that the bridge is not a linux bridge, but an Open vSwitch bridge. But I did have a line in the XML file that I used for net-define as follows: <virtualport type='openvswitch'/> But when I ran net-define, it failed to create the network with the error: XML error: unexpected virtualport type -1 Removing that line and re-running the net-define worked, as I have stated above. How do I tell libvirt that this bridge is an Open vSwitch bridge and not a regular Linux bridge? Thanks, Will

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[libvirt-users] Issue with macvtap bridge and forwarding
by Matt LaPlante 09 Apr '13

09 Apr '13

I have three hosts running Ubuntu 12.04 (libvirt 0.9.8). The configuration is one host running on bare metal while the other two are KVM guests. The first guest is my network router. It has a direct connection to a physical nic going out to the internet, and a bridged connection to a nic for the lan. The host has ip forwarding enabled and forwards my lan traffic back and forth to the internet. The second host is a "lan" machine, which is also on the bridged lan nic. There are several other physical hosts also on the switched lan network this nic connects to. Both hosts are configured on the lan tap as follows (different mac): <interface type='direct'> <mac address='13:54:21:1f:f3:42'/> <source dev='eth1' mode='bridge'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> Everything on the firewall host seems to work OK. Hosts elsewhere on the LAN can connect to it, and they have no problem routing through it and out to the internet and back. That is, traffic passes through both nics and this host successfully. The other guest can also be reached successfully from machines on the LAN. I can ping it and I can ssh to it. I also note that it seems to be able to be able to talk to the "router" host over the vtap bridge: it can perform dns lookups against the router host, and they can seem to reach each other's ports. Where I'm getting stuck is that for whatever reason, the second guest apparently cannot reach the internet via my router host. It's the only host anywhere on the lan that apparently can't pass forwarding traffic via the router guest, and the only common feature appears to be the macvtap bridge. This issue *does not* happen when using a common linux bridge in the otherwise same configuration and the same hosts. In the linux bridge scenario, the lan guest forwards traffic via the router guest fine. But when switching to the macvtap configuration, suddenly the lan guest no longer forwards traffic via the router guest and out to the internet. What appears to be happening is that the traffic is crossing the bridge, but the router host does not classify it or masq it properly, and it never makes the internet trip as expected. Further extending my suspicions, initiating an outbound http connection does not raise an entry in the conntrack table on the router for the problem host. So my question is, what is it about macvtap bridge that would cause traffic coming over via the tap bridge to be routed differently than traffic coming *up* the bridge from the physical interface, or via a traditional linux bridge?

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[libvirt-users] How to device port on the controller
by Daniele Testa 09 Apr '13

09 Apr '13

Hi, I am adding a disk to my KVM virtual server, but for some reason it refuses to honor the <address> I have tried the following 3: <disk type='block' device='disk'> <driver name='phy' type='raw'/> <source dev='/dev/nbd2'/> <target dev='vdb' bus='virtio'/> <serial>my-fake-serial</serial> <address type='drive' controller='0' bus='1' target='3' unit='2'/> </disk> <disk type='block' device='disk'> <driver name='phy' type='raw'/> <source dev='/dev/nbd2'/> <target dev='vdb' bus='virtio'/> <serial>my-fake-serial</serial> <address type='pci' bus='0x00' slot='0x08' function='0x0'/> </disk> <disk type='block' device='disk'> <driver name='phy' type='raw'/> <source dev='/dev/nbd2'/> <target dev='vdb' bus='virtio'/> <serial>my-fake-serial</serial> <address type='virtio-serial' controller='0' bus='0' port='8'/> </disk> I would assume the last one is the one to use, as I am using a "virtio" bus. However, the <address> attribute is simply ignored and the disk is always attached as this: pci-0000:00:05.0 Further, how do I read the "my-fake-serial" from within the virtual machine? I have tried using this: udevadm info -a -p $(udevadm info -q path -n /dev/vdb) But it does not show the serial string there anywhere. Regards, Daniele

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[libvirt-users] fail to convert qemu xml to args with libvirt-1.0.4: An error occurred, but the cause is unknown
by Yin Olivia-R63875 09 Apr '13

09 Apr '13

Hi, I used to convert qemu XML to args with libvirt-1.0.3. But it failed to convert with libvirt-1.0.4. # virsh domxml-to-native qemu-argv test.xml >test.sh error: An error occurred, but the cause is unknown Comparing the debug file as below: 1) lbvirt-1.0.3 <cut> 2013-04-09 03:23:47.296+0000: 2669: debug : virEventPollInterruptLocked:716 : Interrupting 2013-04-09 03:23:47.296+0000: 2669: debug : virNetClientIO:1807 : All done with our call head=(nil) call=0x100871c0 rv=0 2013-04-09 03:23:47.297+0000: 2670: debug : virEventPollRunOnce:640 : Poll got 1 event(s) 2013-04-09 03:23:47.297+0000: 2670: debug : virEventPollDispatchTimeouts:425 : Dispatch 0 2013-04-09 03:23:47.297+0000: 2669: debug : virNetMessageFree:73 : msg=0x10087500 nfds=0 cb=(nil) 2013-04-09 03:23:47.297+0000: 2670: debug : virEventPollDispatchHandles:470 : Dispatch 1 2013-04-09 03:23:47.297+0000: 2670: debug : virEventPollDispatchHandles:484 : i=0 w=1 2013-04-09 03:23:47.297+0000: 2669: debug : virConnectClose:1483 : conn=0x100878b8 <cut> 2) libvirt-1.0.4 <cut> 2013-04-09 03:07:58.012+0000: 2834: debug : virEventPollInterruptLocked:716 : Interrupting 2013-04-09 03:07:58.012+0000: 2834: debug : virNetClientIO:1810 : All done with our call head=(nil) call=0x10089db8 rv=0 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollRunOnce:640 : Poll got 1 event(s) 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollDispatchTimeouts:425 : Dispatch 0 2013-04-09 03:07:58.012+0000: 2834: error : virNetClientProgramDispatchError:175 : An error occurred, but the cause is unknown 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollDispatchHandles:470 : Dispatch 1 2013-04-09 03:07:58.012+0000: 2834: debug : virNetMessageFree:73 : msg=0x1008a0f8 nfds=0 cb=(nil) 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollDispatchHandles:484 : i=0 w=1 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollDispatchHandles:498 : EVENT_POLL_DISPATCH_HANDLE: watch=1 events=1 2013-04-09 03:07:58.012+0000: 2835: debug : virEventPollCleanupTimeouts:516 : Cleanup 0 2013-04-09 03:07:58.013+0000: 2835: debug : virEventPollCleanupTimeouts:552 : Found 0 out of 0 timeout slots used, releasing 0 2013-04-09 03:07:58.013+0000: 2835: debug : virEventPollCleanupHandles:564 : Cleanup 2 2013-04-09 03:07:58.013+0000: 2834: debug : virConnectClose:1483 : conn=0x1008a4b0 <cut> How can I debug this cause unknown error? Best Regards, Olivia

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[libvirt-users] remote connection issue 'virsh -c qemu+ssh:///root@localhost/system list'
by Yin Olivia-R63875 09 Apr '13

09 Apr '13

Hi, I'm trying remote connection with qemu hypervisor on FSL PPC board. The libvirt server is the PPC board. root@ppc:~# ifconfig eth0 10.193.20.109 root@ppc:~# libvirtd -d root@ppc:~# virsh -c qemu:///system define test.xml root@ppc:~# virsh -c qemu:///system start test root@ppc:~# virsh -c qemu:///system list --all Id Name State ---------------------------------------------------- 2 test running Connect from an X86 PC (Ubuntu 10.04) to the PPC board. user@x86:~$ virsh -c qemu+ssh://root@10.193.20.109/system list --all The authenticity of host '10.193.20.109 (10.193.20.109)' can't be established. RSA key fingerprint is 2f:56:07:08:da:7d:ac:41:45:57:d2:12:15:19:67:e0. Are you sure you want to continue connecting (yes/no)? yes root(a)10.193.20.109's password: error: failed to connect to the hypervisor error: End of file while reading data: Warning: Permanently added '10.193.20.109' (RSA) to the list of known hosts. nc: invalid option -- 'U' BusyBox v1.19.4 (2013-03-08 13:08:18 CST) multi-call binary. Usage: nc [-iN] [-wN] [-l] [-p PORT] [-f FILE|IPADDR PORT] [-e PROG]: Input/output error I tried to verify the remote connection on localhost. But it also failed as below: root@mpc8572ds:~# virsh -c qemu+ssh:///root@localhost/system list --all root@localhost's password: error: failed to connect to the hypervisor error: End of file while reading data: nc: invalid option -- 'U' BusyBox v1.19.4 (2013-03-08 13:08:18 CST) multi-call binary. Usage: nc [-iN] [-wN] [-l] [-p PORT] [-f FILE|IPADDR PORT] [-e PROG]: Input/output error Could anyone give suggestion on this issue? Best Regards, Olivia

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