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[libvirt-users] error: Failed to start pool (already mounted)
by Ragnar Skúlason 04 Sep '12

04 Sep '12

Hi everyone, I have storage-pool that for some reason became inactive (possibly due to an error with pool-refresh in an old version of a Java API binding). I want to restart the pool but am unable to, due to the volume being mounted: # virsh pool-start [uuid] error: Failed to start pool [uuid] error: Requested operation is not valid: Target '/mnt/[uuid]' is already mounted We have tested this with versions 0.9.12 and 0.9.13. Is it possible to bypass this mount check and start the storage pool (forcefully)? Many thanks, Ragnar Skúlason

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[libvirt-users] Fwd: vm pxe fail
by Alex Jia 01 Sep '12

01 Sep '12

----- Forwarded Message ----- From: "Alex Jia" <ajia(a)redhat.com> To: "Andrew Holway" <a.holway(a)syseleven.de> Cc: kvm(a)vger.kernel.org Sent: Friday, August 31, 2012 10:37:23 PM Subject: Re: [libvirt-users] vm pxe fail Hi Andrew, Great, BTW, in fact, you may pxe boot via VF of Intel82576, however, Intel82576 SR-IOV network adapters don't provide a ROM BIOS for the cards virtual functions (VF), but an image of such a ROM is available, and with this ROM visible to the guest, it can PXE boot. In libvirt's xml, you need to configure guest XML like this: <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address bus='XX' slot='XX' function='XX'/> </source> <boot order='1'/> <rom bar='on' file='/xxxx/ipxe-808610ca.rom'/> </hostdev> You need to build a ipxe-808610ca.rom by yourself, if you're interested in this, please refer to http://ipxe.org/. -- Regards, Alex ----- Original Message ----- From: "Andrew Holway" <a.holway(a)syseleven.de> To: "Alex Jia" <ajia(a)redhat.com> Cc: kvm(a)vger.kernel.org Sent: Friday, August 31, 2012 9:32:24 PM Subject: Re: [libvirt-users] vm pxe fail Hi, In the end the problem was SR-IOV enabled on the cards. I turned this off and everything worked ok. Im using HP 10G cards which are rebranded emulex. 0a:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (be3) (rev 01) Thanks, Andrew On Aug 17, 2012, at 4:34 AM, Alex Jia wrote: > Hi Andrew, > I can't confirm a root reason based on your information, perhaps you may > try to find a reason by yourself via the following docs: > > http://wiki.libvirt.org/page/PXE_boot_%28or_dhcp%29_on_guest_failed (Troubleshooting) > http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/sec… (User Guide) > > If can't, please provide your version of kvm, libvirt, tftp, etc, and run 'virsh net-dumpxml br0' to dump your > network bridge XML configuration, and run 'cat pxelinux.cfg' to show your pxelinux configuration, thanks. > > -- > Regards, > Alex > > > ----- Original Message ----- > From: "Andrew Holway" <a.holway(a)syseleven.de> > To: kvm(a)vger.kernel.org > Sent: Thursday, August 16, 2012 8:25:35 PM > Subject: [libvirt-users] vm pxe fail > > Hallo > > I have a kvm vm that I am attempting to boot from pxe. The dhcp works perfectly and I can see the VM in the pxe server arp. but the tftp just times out. I don't see any tftp traffic on either the physical host or on the pie server. I am using a bridged interface. I have tried using several virtual nic drivers, several different mac addresses and several different ips. on the physical host I can get the pxelinux.0 file from the pxe server via tftp and can clearly see that traffic with tcpdump. > > Ive tried using various virtual interfaces. > > I can pxe boot my physical hosts with no problems. > > I can tftp fine from the physical host and see the traffic with ethdump > > Here is the terminal output from the VM: https://dl.dropbox.com/u/98200887/Screen%20Shot%202012-08-15%20at%206.41.12… > > Thanks, > > Andrew > > [root@node002 ~]# yum list | grep qemu > gpxe-roms-qemu.noarch 0.9.7-6.9.el6 @base > qemu-img.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates > qemu-kvm.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates > qemu-guest-agent.x86_64 2:0.12.1.2-2.295.el6_3.1 updates > qemu-kvm-tools.x86_64 2:0.12.1.2-2.295.el6_3.1 updates > > [root@node002 ~]# ethtool eth0 > Settings for eth0: > Supported ports: [ TP ] > Supported link modes: 10000baseT/Full > Supports auto-negotiation: No > Advertised link modes: 10000baseT/Full > Advertised pause frame use: No > Advertised auto-negotiation: No > Speed: Unknown! > Duplex: Unknown! (255) > Port: Twisted Pair > PHYAD: 0 > Transceiver: internal > Auto-negotiation: off > MDI-X: Unknown > Supports Wake-on: g > Wake-on: g > Current message level: 0x00000014 (20) > Link detected: no > > [root@node002 ~]# brctl show > bridge name bridge id STP enabled interfaces > br0 8000.009c02241ae0 no eth1 > vnet0 > virbr0 8000.525400a6d5aa yes virbr0-nic > > [root@node002 ~]# ethtool vnet0 > Settings for vnet0: > Supported ports: [ ] > Supported link modes: > Supports auto-negotiation: No > Advertised link modes: Not reported > Advertised pause frame use: No > Advertised auto-negotiation: No > Speed: 10Mb/s > Duplex: Full > Port: Twisted Pair > PHYAD: 0 > Transceiver: internal > Auto-negotiation: off > MDI-X: Unknown > Current message level: 0xffffffa1 (-95) > Link detected: yes > > <domain type='kvm'> > <name>vm004</name> > <uuid>4f03b09b-e834-bbf3-a6c2-1689f3156ef2</uuid> > <memory unit='KiB'>2097152</memory> > <currentMemory unit='KiB'>2097152</currentMemory> > <vcpu placement='static'>2</vcpu> > <os> > <type arch='x86_64' machine='rhel6.3.0'>hvm</type> > <boot dev='hd'/> > </os> > <features> > <acpi/> > <apic/> > <pae/> > </features> > <clock offset='utc'/> > <on_poweroff>destroy</on_poweroff> > <on_reboot>restart</on_reboot> > <on_crash>restart</on_crash> > <devices> > <emulator>/usr/libexec/qemu-kvm</emulator> > <disk type='file' device='disk'> > <driver name='qemu' type='raw' cache='none'/> > <source file='/cm/shared/vm/vm004.img'/> > <target dev='hda' bus='ide'/> > <address type='drive' controller='0' bus='0' target='0' unit='0'/> > </disk> > <disk type='block' device='cdrom'> > <driver name='qemu' type='raw'/> > <target dev='hdc' bus='ide'/> > <readonly/> > <address type='drive' controller='0' bus='1' target='0' unit='0'/> > </disk> > <controller type='usb' index='0'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> > </controller> > <controller type='ide' index='0'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> > </controller> > <interface type='bridge'> > <mac address='00:00:00:00:00:0d'/> > <source bridge='br0'/> > <model type='rtl8139'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> > </interface> > <serial type='pty'> > <target port='0'/> > </serial> > <console type='pty'> > <target type='serial' port='0'/> > </console> > <input type='mouse' bus='ps2'/> > <graphics type='vnc' port='-1' autoport='yes'/> > <video> > <model type='cirrus' vram='9216' heads='1'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> > </video> > <memballoon model='virtio'> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> > </memballoon> > </devices> > </domain> > > > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users

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[libvirt-users] whether before create a pool use type logical must create a vg or not?
by zhijun liu 30 Aug '12

30 Aug '12

whether before create a pool (use type logical) must create a vg or not? when I create pool named vg-test,but always occurs: error: Failed to create pool from pool.xml error: internal error Child process (/sbin/vgchange -ay vg-test) status unexpected: exit status 5

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[libvirt-users] Running VirtualBox headless
by Dmitry Mikhin 30 Aug '12

30 Aug '12

Hello everyone, I'm trying to run a VirtualBox-based VM in headless mode, but apparently running out of luck. So far: - Fedora 14 host - libvirt 0.9.8 manually built from libvirt-0.9.8-1.fc14.src.rpm (later tested with 0.10.0 built from libvirt-0.10.0-1.fc17.src.rpm to the same effect) - I have a VBox 4.1.20 installed with extension pack - a virtual Windows XP guest - can start this machine from VirtualBox GUI - can start from "virsh -c vbox:///session start" - VRDP enabled in VirtualBox GUI The relevant entries in "virsh dumpxml" output are: <graphics type='desktop' display=':0.0'/> <graphics type='rdp' port='3388' multiUser='yes'/> - can connect to the running XP from rdesktop - can start the same machine using VBoxHeadless and connect from rdesktop - can start from virsh and connect from rdesktop All the above can be performed as a "su - otheruser", where otheruser has been added to vboxusers group, AND with access to X display (of the main, logged user) enabled by "xauth add ..." However, when no xauth access is enabled, "virsh start" fails: $ virsh --connect vbox:///session start vbox-windows-xp-32 error: Failed to start domain vbox-windows-xp-32 error: An error occurred, but the cause is unknown And I cannot remove the desktop graphics from the xml (edit as shown below, in vi remove the <graphics type='desktop'...> line, save, quit): $ virsh --connect vbox:///session edit vbox-windows-xp-32 error: internal error could not define a domain, rc=80bb0004 I set export VIRSH_DEBUG=0 export VIRSH_LOG_FILE="virsh.log" export LIBVIRT_DEBUG=1 export LIBVIRT_LOG_OUTPUTS="1:file:libvirt.log" and collected two log-files (tarball attached; this has been done using the older libvirt 0.9.8; upgrade to 0.10.0 did not solve the issue). Also, related or not, "virsh dumpxml" produces an xml file that is rejected by virt-xml-validate (with or without the graphics line): $ virsh --connect vbox:///session dumpxml vbox-windows-xp-32 > vbox-windows-xp-32.xml $ virt-xml-validate vbox-windows-xp-32.xml Relax-NG validity error : Extra element devices in interleave vbox-windows-xp-32.xml:20: element devices: Relax-NG validity error : Element domain failed to validate content vbox-windows-xp-32.xml fails to validate When the second user is allowed access to my display: $ xhost +SI:localuser:buildmaster all starts to work (and the Windows XP window pops up on my display whenever it wants). Any ideas how to make it work on the background? Many thanks for the wonderful and very useful library, Dmitry

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[libvirt-users] network settings for an isolated network
by Christian Schmidt 30 Aug '12

30 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

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[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

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[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

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[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

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[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

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[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

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