- Users - libvirt List Archives

[libvirt-users] network settings for an isolated network
by Christian Schmidt 29 Aug '12

29 Aug '12

Hi, I try to configure a kvm with a NIC, but no attached network to this NIC. I tried following methods: 1. Create a generic ethernet connection I configured the VM with following interface section: <interface type='ethernet'> <script path='/root/noscript.sh'/> <target dev='myvm_nic0'/> <interface/> The script /root/noscript.sh exists and is executable and has only an exit 0 statement. When I try to start the VM, virsh aborts with following error: error: Failed to start domain myvm error: internal error process exited while connecting to monitor: qemu-kvm: -netdev tap,script=/root/noscript.sh,id=hostnet1: could not configure /dev/net/tun (tap%d): Operation not permitted qemu-kvm: -netdev tap,script=/root/noscript.sh,id=hostnet1: Device 'tap' could not be initialized The tun module is loaded and I can create tap devices with tunctl. So there might be no problem... 2. I configurerd a network with no forward element. I've defined and started following network on the host with virsh net-define / net-start <network> <name>myvm_isolated</name> <bridge name='virbr_myvm_1' /> </network> The documentation says: "If there is no forward element, the network will be isolated from any other network (unless a guest connected to that network is acting as a router, of course)." The interface configuration of the domain was this: <interface type='network'> <mac address='00:12:67:bb:bb:11'/> <source network='myvm_isolated'/> <model type='e1000'/> </interface> The VM starts as expected. But the interface is connected to an host bridge like a NAT interface. There is a DHCP server in the network and the VM gets an IP Address and can ping and ssh to the VM-Server... I used following version of libvirt and qemu on SuSE Enterprise Linux Server SP2: # virsh version Compiled against library: libvir 0.9.6 Using library: libvir 0.9.6 Using API: QEMU 0.9.6 Running hypervisor: QEMU 0.15.1 Can you please tell me how to configure a not connected (isolated) network interface card for my VM? Regards, Christian

1 0

[libvirt-users] Use virsh command domjobinfo but get nothing
by Li, Chun Wen 29 Aug '12

29 Aug '12

Hi, all I test virsh comand "domjobinfo" on x86-i386 and PPC64 host. But Both get nothing. # virsh version Compiled against library: libvir 0.9.13 Using library: libvir 0.9.13 Using API: QEMU 0.9.13 Running hypervisor: QEMU 1.1.50 # virsh list Id Name State ---------------------------------------------------- 21 f16-ppc-qcow2 running 22 f16-blkiotune running 23 f16-device-attach running # virsh domjobinfo 21 Job type: None But I have run two jobs on domain 21 [root@localhost ~]# jobs [1]- Stopped top [2]+ Stopped vi install.log I searched the domjobinfo patch gave by Daniel P. Berrange, he said " This series introduces 2 new APIs to allow long running jobs to be monitored and cancelled. " Dose domjobinfo only monitor some special jobs in guest? Or does I miss something? Thanks & Regards Kimi Li

2 2

[libvirt-users] delete storage pool error
by zhijun liu 29 Aug '12

29 Aug '12

hi,all I create pool with lvm,but i carelessly add a blank space in the pool name like ' lvm_pool' , now I want to delete this pool,but encounter a error: error: Failed to delete pool lvm_pool error: internal error Child process (/sbin/vgremove -f lvm_pool) status unexpected: exit status 5 how to solve this problem? thanks

2 1

[libvirt-users] virsh reboot problem
by Andreas Davour 28 Aug '12

28 Aug '12

I am trying to reboot my virtual machines, running virsh reboot. Then I get the following error: error: this function is not supported by the connection driver: virDomainReboot Searching around I get the impression this should be fixed by now, since the bugs I find are old and resolved. These are the versions I'm running. Linux 2.6.32-131.0.15.el6.x86_64 #1 SMP Tue May 10 15:42:40 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux libvirt-0.8.7-18.el6.x86_64 qemu-kvm-0.12.1.2-2.160.el6.x86_64 I also have acpid in both the host and the guest. Am I missing something? Thanks. /andreas

3 3

[libvirt-users] Why a max mem setting?
by Andreas Davour 28 Aug '12

28 Aug '12

Hi I have just started to investigate the possibilities of resizing memory for my kvm virtual machines on the fly. It works just fine with virsh setmem and that's great. Now, what I'm wondering about is the <memory> directive in the xml domain definition. Why would I not just set that to the size of available RAM in the host machine? Am I missing some nuance or finesse to the handling of memory? What would happen if I had three virtual machines with max set to physical max and then used setmem to give one of the virtual machines more than its third? Thank for any feedback. I could maybe just try the latter out, but I have no machine I could crash if that's the result... /andreas

2 1

[libvirt-users] What's the api virConnectBaselineCPU used for?
by Timon Wang 28 Aug '12

28 Aug '12

Could anyone tell me what is virConnectBaselineCPU exactly do. What could I do which this API. It's very nice to give me a simple example. -- Focus on: Network security,Scanner,NodeJS,JAVA,WWW Blog: http://www.nohouse.net

2 1

[libvirt-users] question about using openAuth with Python
by lulin Fan 27 Aug '12

27 Aug '12

Hi guys Is anybody can help me how to use openAuth to connect a remote URI without input the boring password? we assume the password of root for remote machine is "123456". Even I running the example in libvirt library esxlist.py(change uri to a qemu type and assign the username and password). Bellow is my simple test code, unfortunately it still need me to input the password. import libvirt def authcb(ncred, cbdata): for cred in ncred: if cred[0] == libvirt.VIR_CRED_AUTHNAME: cred[4] = "root" elif cred == libvirt.VIR_CRED_PASSPHRASE: cred[4] = "123456" return 0 class connection: def __init__(self, uri): self.uri = uri def open(self): auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_PASSPHRASE], authcb, None] vm_conn = libvirt.openAuth(self.uri, auth, 0); print self.uri if vm_conn == None: print 'Failed to open connection to %s' % self.uri for name in vm_conn.listDefinedDomains(): print name vm = vm_conn.lookupByName(name) if __name__ == '__main__': conn = connection('qemu+ssh://root@192.168.1.203/system') conn.open() Thanks fan

2 1

Re: [libvirt-users] automatically detaching PCI host devices from guest for SRIOV usage.
by Rajesh Kumar Mallah 27 Aug '12

27 Aug '12

Dear Alex , What do you have in the Host ? Does the guests behave as we are expecting them to behave in our setup ? <offtopic> can i get rhel6.2 for trying? </offtopic> Also i have attached the files this time. Regards, Rajesh Kumar Mallah Tel. 91-11-46710500 (Ext:303) Cell +919811255597 Website: http://www.tradeindia.com/ \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | start planting | | | ----- "Alex Jia" <ajia(a)redhat.com> wrote: | From: "Alex Jia" <ajia(a)redhat.com> | To: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | Cc: libvirt-users(a)redhat.com, "vikas pandey" <vikas_pandey(a)tradeindia.com> | Sent: Monday, August 27, 2012 12:55:14 PM | Subject: Re: [libvirt-users] automatically detaching PCI host devices from guest for SRIOV usage. | | Hi Rajesh, | I guess you forgot to attach your attachments in here. | As usual, I tried to directly assign a PF or VF of the Intel82576 | to guest on RHEL6.2, my box is Dell Optiplex 755. | | -- | Regards, | Alex | | | ----- Original Message ----- | From: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | To: "Alex Jia" <ajia(a)redhat.com> | Cc: libvirt-users(a)redhat.com, "vikas pandey" | <vikas_pandey(a)tradeindia.com> | Sent: Saturday, August 25, 2012 2:31:20 PM | Subject: Re: [libvirt-users] automatically detaching PCI host devices | from guest for SRIOV usage. | | Dear Alex/List , | | I am attaching a zip file that contains a set of files. | The files that start with case-1 is the case when the PCI | device is detached prior to shutdown. case-2 is otherwise. | | Kindly have a look when you have time and see if there | is any hints. | | BTW can you suggest in what free platform does SRIOV and direct | PCI assignment *really* works so that we could try on that as well. | | Regards, | Rajesh Kumar Mallah | Tel. 91-11-46710500 (Ext:303) | Cell +919811255597 | Website: http://www.tradeindia.com/ | \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | | start planting | | | | | | ----- "Alex Jia" <ajia(a)redhat.com> wrote: | | | From: "Alex Jia" <ajia(a)redhat.com> | | To: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | | Cc: libvirt-users(a)redhat.com, "vikas pandey" | <vikas_pandey(a)tradeindia.com> | | Sent: Thursday, August 23, 2012 8:21:58 AM | | Subject: Re: [libvirt-users] automatically detaching PCI host | devices from guest for SRIOV usage. | | | | ----- Original Message ----- | | From: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | | To: "Alex Jia" <ajia(a)redhat.com> | | Cc: libvirt-users(a)redhat.com, "vikas pandey" | | <vikas_pandey(a)tradeindia.com> | | Sent: Wednesday, August 22, 2012 7:37:05 PM | | Subject: Re: [libvirt-users] automatically detaching PCI host | devices | | from guest for SRIOV usage. | | | | | | | | | | | Could you attach your libvirtd.log? which's version your | libvirt? | | | in addition, if your guest has a desktop, please login and check | if | | | | | the network configuration exists issues. | | | | | | Thanks, | | | Alex | | | | Dear Alex , | | | | What logging level is useful for you ? | | | | Dear Rajesh, | | | | Level 1 (Debug) should be enough, but I guess it probably hasn't | more | | help for us, | | you had better to login the guest then check network when you were | | meeting this issue | | again, for example, to check if network configuration is valid and | try | | to restart | | relevant network services to see if the guest network can work | again | | or something | | like that, In addition, you shut down the guest via running 'halt' | in | | the guest, | | Does it work for you if you use libvirt relevant interface such as | | 'virsh shutdown guest' | | or 'virsh destroy guest'? | | | | | | Regards, | | Alex | | | | | | | | Regards, | | Rajesh Kumar Mallah | | Tel. 91-11-46710500 (Ext:303) | | Cell +919811255597 | | Website: http://www.tradeindia.com/ | | \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | | | start planting | | |

2 2

Re: [libvirt-users] automatically detaching PCI host devices from guest for SRIOV usage.
by Rajesh Kumar Mallah 27 Aug '12

27 Aug '12

Dear Alex / List , I did some changes which i want you to know. I installed ixgbevf on the host and libvirt does attach and detach the VFs from the host and guests. But the connectivity issue is there. root@debian-squeeze:~# readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/ixgbevf root@debian-squeeze:~# /usr/local/libvirt/bin/virsh start new-installed Domain new-installed started root@debian-squeeze:~# readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub root@debian-squeeze:~# ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. >From 192.168.100.6 icmp_seq=1 Destination Host Unreachable >From 192.168.100.6 icmp_seq=2 Destination Host Unreachable >From 192.168.100.6 icmp_seq=3 Destination Host Unreachable >From 192.168.100.6 icmp_seq=4 Destination Host Unreachable >From 192.168.100.6 icmp_seq=5 Destination Host Unreachable >From 192.168.100.6 icmp_seq=6 Destination Host Unreachable >From 192.168.100.6 icmp_seq=7 Destination Host Unreachable >From 192.168.100.6 icmp_seq=8 Destination Host Unreachable >From 192.168.100.6 icmp_seq=9 Destination Host Unreachable 64 bytes from 192.168.101.10: icmp_req=10 ttl=64 time=812 ms 64 bytes from 192.168.101.10: icmp_req=11 ttl=64 time=0.351 ms 64 bytes from 192.168.101.10: icmp_req=12 ttl=64 time=0.293 ms 64 bytes from 192.168.101.10: icmp_req=13 ttl=64 time=0.364 ms ^C root@debian-squeeze:~# ssh 192.168.101.10 root(a)192.168.101.10's password: root@new-installed:~# halt The system is going down for system halt NOW!s/0) (Tue Aug 21 18:28:27 2012): root@new-installed:~# Connection to 192.168.101.10 closed by remote host. Connection to 192.168.101.10 closed. root@debian-squeeze:~# root@debian-squeeze:~# root@debian-squeeze:~# root@debian-squeeze:~# root@debian-squeeze:~# readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/ixgbevf root@debian-squeeze:~# /usr/local/libvirt/bin/virsh start new-installed Domain new-installed started root@debian-squeeze:~# readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub root@debian-squeeze:~# ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. >From 192.168.100.6 icmp_seq=1 Destination Host Unreachable >From 192.168.100.6 icmp_seq=2 Destination Host Unreachable >From 192.168.100.6 icmp_seq=5 Destination Host Unreachable >From 192.168.100.6 icmp_seq=6 Destination Host Unreachable >From 192.168.100.6 icmp_seq=7 Destination Host Unreachable >From 192.168.100.6 icmp_seq=8 Destination Host Unreachable ^C N ever came! Please suggest if there is any way out. Relevant kernel logs: Aug 21 18:28:34 debian-squeeze kernel: [ 290.068511] ixgbevf 0000:04:10.0: enabling device (0000 -> 0002) Aug 21 18:28:34 debian-squeeze kernel: [ 290.069216] ixgbevf 0000:04:10.0: enabling bus mastering Aug 21 18:28:34 debian-squeeze kernel: [ 290.082458] ixgbevf 0000:04:10.0: irq 127 for MSI/MSI-X Aug 21 18:28:34 debian-squeeze kernel: [ 290.082482] ixgbevf 0000:04:10.0: irq 128 for MSI/MSI-X Aug 21 18:28:34 debian-squeeze kernel: [ 290.082503] ixgbevf 0000:04:10.0: irq 129 for MSI/MSI-X Aug 21 18:28:34 debian-squeeze kernel: [ 290.141706] ixgbe 0000:04:00.0: eth0: Set MAC msg received from VF 0 Aug 21 18:28:34 debian-squeeze kernel: [ 290.142548] ixgbe 0000:04:00.0: eth0: Set LPE msg received from vf 0 Aug 21 18:28:34 debian-squeeze kernel: [ 290.150487] IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready Aug 21 18:28:34 debian-squeeze kernel: [ 290.153637] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready Aug 21 18:28:45 debian-squeeze ntpdate[40135]: step time server 202.190.183.188 offset -0.004582 sec Aug 21 18:28:46 debian-squeeze snmpd[39480]: IfIndex of an interface changed. Aug 21 18:29:39 debian-squeeze kernel: [ 355.486987] pci-stub 0000:04:10.0: claimed by stub Aug 21 18:29:39 debian-squeeze kernel: [ 355.826741] pci-stub 0000:04:10.0: enabling device (0000 -> 0002) Aug 21 18:29:40 debian-squeeze kernel: [ 356.484437] assign device 0:4:10.0 Aug 21 18:29:47 debian-squeeze kernel: [ 363.296117] kvm: 40206: cpu0 unhandled rdmsr: 0xc0010001 Aug 21 18:29:55 debian-squeeze kernel: [ 371.643998] ixgbe 0000:04:00.0: eth0: Set MAC msg received from VF 0 Aug 21 18:29:55 debian-squeeze kernel: [ 371.644661] ixgbe 0000:04:00.0: eth0: Set LPE msg received from vf 0 Aug 21 18:29:55 debian-squeeze kernel: [ 371.663095] pci-stub 0000:04:10.0: irq 127 for MSI/MSI-X Aug 21 18:29:55 debian-squeeze kernel: [ 371.694983] pci-stub 0000:04:10.0: irq 127 for MSI/MSI-X Aug 21 18:29:55 debian-squeeze kernel: [ 371.695009] pci-stub 0000:04:10.0: irq 128 for MSI/MSI-X Aug 21 18:29:55 debian-squeeze kernel: [ 371.758805] pci-stub 0000:04:10.0: irq 127 for MSI/MSI-X Aug 21 18:29:55 debian-squeeze kernel: [ 371.758833] pci-stub 0000:04:10.0: irq 128 for MSI/MSI-X Aug 21 18:29:55 debian-squeeze kernel: [ 371.758856] pci-stub 0000:04:10.0: irq 129 for MSI/MSI-X Regards, Rajesh Kumar Mallah Tel. 91-11-46710500 (Ext:303) Cell +919811255597 Website: http://www.tradeindia.com/ \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | start planting | | | ----- "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> wrote: | From: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | To: "Alex Jia" <ajia(a)redhat.com> | Cc: libvirt-users(a)redhat.com, "vikas pandey" <vikas_pandey(a)tradeindia.com> | Sent: Tuesday, August 21, 2012 11:00:24 AM | Subject: Re: [libvirt-users] automatically detaching PCI host devices from guest for SRIOV usage. | | | Dear Alex , | | Thanks Once again for responding. I tried to replicate your steps. in our case readlink always reveals that the pci device is being | handled by the pci-stub driver (as in our case ixgbevf is absent in the host) | | Below is an annotaded sequence of events. | | Check status : # readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub | | Content of the nic.xml: | root@debian-squeeze:/usr/local/libvirt/etc/libvirt/qemu# cat /root/nic.xml <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x04' slot='0x10' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </hostdev> # readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub | | corrent connectivity is OK | # ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. 64 bytes from 192.168.101.10: icmp_req=1 ttl=64 time=0.491 ms 64 bytes from 192.168.101.10: icmp_req=2 ttl=64 time=0.384 ms 64 bytes from 192.168.101.10: icmp_req=3 ttl=64 time=0.310 ms ^C --- 192.168.101.10 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 1998ms rtt min/avg/max/mdev = 0.310/0.395/0.491/0.074 ms # readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub | | Detach and reattach and check connectivity in running guest. | note: the guest has pci hotplug support , the ethernet interfaces | are configured to allow hotplug and IP is statically assigned. | # virsh detach-device new-installed /root/nic.xml Device detached successfully # readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub root@debian-squeeze:/usr/local/libvirt/etc/libvirt/qemu# ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. >From 192.168.100.6 icmp_seq=9 Destination Host Unreachable >From 192.168.100.6 icmp_seq=10 Destination Host Unreachable >From 192.168.100.6 icmp_seq=11 Destination Host Unreachable ^C --- 192.168.101.10 ping statistics --- 14 packets transmitted, 0 received, +3 errors, 100% packet loss, time 13096ms pipe 3 # virsh attach-device new-installed /root/nic.xml Device attached successfully # ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. 64 bytes from 192.168.101.10: icmp_req=1 ttl=64 time=0.507 ms 64 bytes from 192.168.101.10: icmp_req=2 ttl=64 time=0.388 ms 64 bytes from 192.168.101.10: icmp_req=3 ttl=64 time=0.314 ms 64 bytes from 192.168.101.10: icmp_req=4 ttl=64 time=0.315 ms 64 bytes from 192.168.101.10: icmp_req=5 ttl=64 time=0.335 ms ^C --- 192.168.101.10 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 3998ms rtt min/avg/max/mdev = 0.314/0.371/0.507/0.076 ms # readlink -f /sys/bus/pci/devices/0000\:04\:10.0/driver /sys/bus/pci/drivers/pci-stub | Above proves that detach-attach cycle was successful. | # virsh detach-device new-installed /root/nic.xml Device detached successfully | | Please note that guest is being shutdown with nic detached. | | # virsh shutdown new-installed Domain new-installed is being shutdown | Guest being started again : | | # virsh start new-installed Domain new-installed started # ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. 64 bytes from 192.168.101.10: icmp_req=1 ttl=64 time=0.583 ms 64 bytes from 192.168.101.10: icmp_req=2 ttl=64 time=0.402 ms 64 bytes from 192.168.101.10: icmp_req=3 ttl=64 time=0.308 ms 64 bytes from 192.168.101.10: icmp_req=4 ttl=64 time=0.316 ms 64 bytes from 192.168.101.10: icmp_req=5 ttl=64 time=0.318 ms 64 bytes from 192.168.101.10: icmp_req=6 ttl=64 time=0.247 ms ^C --- 192.168.101.10 ping statistics --- 6 packets transmitted, 6 received, 0% packet loss, time 4997ms rtt min/avg/max/mdev = 0.247/0.362/0.583/0.109 ms | Please note on starting the guest the PCI device came up | and connectivity was established. The device was also defined | inside the guest XML. | | | Now shutting down the Guest without detaching. | | # virsh shutdown new-installed Domain new-installed is being shutdown # virsh start new-installed Domain new-installed started | | # ping 192.168.101.10 PING 192.168.101.10 (192.168.101.10) 56(84) bytes of data. >From 192.168.100.6 icmp_seq=9 Destination Host Unreachable >From 192.168.100.6 icmp_seq=10 Destination Host Unreachable >From 192.168.100.6 icmp_seq=11 Destination Host Unreachable ^C --- 192.168.101.10 ping statistics --- 14 packets transmitted, 0 received, +3 errors, 100% packet loss, time 13095ms pipe 3 CONNECTION IS LOST | | We are using latest libvirtd (0.9.13) , lastest ixgbe/ixgbevf (from sf) , lastest stable kernel (3.5.1) | | Regards, | Rajesh Kumar Mallah | Tel. 91-11-46710500 (Ext:303) | Cell +919811255597 | Website: http://www.tradeindia.com/ | \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | | start planting | | | | | | ----- "Alex Jia" <ajia(a)redhat.com> wrote: | | From: "Alex Jia" <ajia(a)redhat.com> | | To: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | | Cc: libvirt-users(a)redhat.com | | Sent: Tuesday, August 21, 2012 9:34:24 AM | | Subject: Re: [libvirt-users] automatically detaching PCI host devices from guest for SRIOV usage. | | | | On 08/21/2012 11:22 AM, Rajesh Kumar Mallah wrote: | | | | Dear Alex / List , | | | | Thanks for the response. | | | | The problem is regarding detaching from the guest not host. | | | | I see, if you attach a PCI device into guest with 'managed' mode(managed='yes') then the device is automatically detached from guest and returned to host after guest exiting, for example. | | | | # lspci | grep Eth | | 00:19.0 Ethernet controller: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02) | | | | # readlink /sys/bus/pci/devices/0000\:00\:19.0/driver/ -f | | /sys/bus/pci/drivers/e1000e | | | | # virsh start foo | | Domain foo started | | | | # ping -c 3 xx.xx.xx.xx | | PING xx.xx.xx.xx (xx.xx.xx.xx) 56(84) bytes of data. | | 64 bytes from nx-in-f160.1e100.net (xx.xx.xx.xx): icmp_seq=1 ttl=49 time=87.8 ms | | 64 bytes from nx-in-f160.1e100.net (xx.xx.xx.xx): icmp_seq=2 ttl=49 time=85.2 ms | | 64 bytes from nx-in-f160.1e100.net (xx.xx.xx.xx): icmp_seq=3 ttl=49 time=91.8 ms | | --- xx.xx.xx.xx ping statistics --- | | 3 packets transmitted, 3 received, 0% packet loss, time 2093ms | | rtt min/avg/max/mdev = 85.240/88.327/91.881/2.731 ms | | | | # cat hostdev.xml | | <hostdev mode='subsystem' type='pci' managed='yes'> | | <source> | | <address domain='0x0000' bus='0x00' slot='0x19' function='0x0'/> | | </source> | | </hostdev> | | | | # virsh attach-device foo hostdev.xml | | Device attached successfully | | | | # readlink /sys/bus/pci/devices/0000\:00\:19.0/driver/ -f | | /sys/bus/pci/drivers/pci-stub | | | | # ping -c 3 xx.xx.xx.xx | | connect: Network is unreachable | | | | # virsh destroy foo | | Domain foo destroyed | | | | # readlink /sys/bus/pci/devices/0000\:00\:19.0/driver/ -f | | /sys/bus/pci/drivers/e1000e | | | | # ping -c 3 xx.xx.xx.xx | | PING xx.xx.xx.xx (xx.xx.xx.xx) 56(84) bytes of data. | | 64 bytes from xx.xx.xx.xx: icmp_seq=1 ttl=49 time=79.7 ms | | 64 bytes from xx.xx.xx.xx: icmp_seq=2 ttl=49 time=83.2 ms | | 64 bytes from xx.xx.xx.xx: icmp_seq=3 ttl=49 time=84.5 ms | | | | --- xx.xx.xx.xx ping statistics --- | | 3 packets transmitted, 3 received, 0% packet loss, time 2087ms | | rtt min/avg/max/mdev = 79.714/82.480/84.513/2.040 ms | | | | Notes, need to wait for local network recovery again then check network connectivity. | | | | If your network still is disconnect, it may be a bug IMHO, please show your libvirt | | and qemu-kvm version, or my example is not what you want, please let me know. | | | | Thanks, | | Alex | | | | | | In our case since ixgbevf driver is NOT present in the host hence the virtual | | interfaces never really attach themselves to the host. | | | | Regards, | | Rajesh Kumar Mallah | | Tel. 91-11-46710500 (Ext:303) | | Cell +919811255597 | | Website: http://www.tradeindia.com/ | | \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | | | start planting | | | | | | | | | ----- "Alex Jia" <ajia(a)redhat.com> wrote: | | | From: "Alex Jia" <ajia(a)redhat.com> | | | To: "Rajesh Kumar Mallah" <mallah(a)tradeindia.com> | | | Cc: libvirt-users(a)redhat.com | | | Sent: Tuesday, August 21, 2012 8:31:21 AM | | | Subject: Re: [libvirt-users] automatically detaching PCI host devices from guest for SRIOV usage. | | | | | | On 08/20/2012 08:34 PM, Rajesh Kumar Mallah wrote: Dear List , We are using intel 82599EB based SRIOV capable 10GbE cards on the host machine.The VFs are being assigned to the guest in pass through mode and are providing the network connectivity as expected. However when we shutdown the guest the connectivity does not comes back via the VFs on the guest in next boot unless the VFs are detached from the *guest* *before* initiating a shutdown of the guests. Dear Rajesh, | | | | | | Please see the following comments. | | | | | | ( the detach is explicitly done via virsh command /usr/local/libvirt/bin/virsh detach-device guest01 ~/nic.xml nic.xml contained <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x04' slot='0x10' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </hostdev> ) The question is anyone else facing similar problem and if so what solution was used? Secondly , is there anyway to automate the detaching of the VFs from the guest when the guest is put in the shutdown sequence ? (or for that matter destroyed). | | | When managed is "yes" for a PCI device, it is automatically detached from the host before being passed on to the guest, and automatically reattached to the host after the guest exits such as shutdown a guest. | | | | | | Regards, | | | Alex | | | | | | Regards, Rajesh Kumar Mallah Tel. 91-11-46710500 (Ext:303) Cell +919811255597 Website: http://www.tradeindia.com/ \|/ \|/ \|/ stop printing \|/ \|/ \|/ | | | start planting | | | _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users | | | | |

2 5

[libvirt-users] remote lxc via libvirt?
by Dan Kegel 27 Aug '12

27 Aug '12

Has support for creating or using lxc containers on remote machines been added to libvirt yet? https://help.ubuntu.com/12.04/serverguide/lxc.html says "Libvirt is a powerful hypervisor management solution with which you can administer Qemu, Xen and LXC virtual machines, both locally and remote." so I assume it's been done and I'm just having trouble seeing it... otoh, I hear libvirt-lxc is going to be rewritten on top of liblxc Real Soon Now, maybe that has some bearing on the question.

2 1