- Users - libvirt List Archives

[libvirt-users] 100% CPU when using nested virtualization
by Digimer 11 Mar '16

11 Mar '16

Hi all, I got a new laptop recently and what worked before no longer works (Fedora 23 on the laptops in both cases)... I'm trying to get nested virtualization to work because I use the VMs on the laptop to simulate an HA cluster that itself hosts VMs. I don't care much at all about the performance of the nested VM, it's just there so that I can work on the cluster's code. When I try to provision a VM inside a VM (the host VM is CentOS/RHEL 6.7), the CPU load spikes to such a high degree that my ssh session times out after a while. The VM appears in libvirtd (as viewed by virt-manager on another machine), but the VM itself never starts. In one case, the VM host remained somewhat functional and killing kvm/qemu/libvirtd didn't reduce the CPU load. The main difference between the setups is that the older laptop had a Sandy bridge(? Thinkpad W530) and the new laptop is a Broadwell (Thinkpad P70). I've tried to loading vhost_net without much luck. I have, of course, enabled nesting on the actual hardware: cat /sys/module/kvm_intel/parameters/nested Y Any tips on how to debug? I'm in quite a pickle with this, so any and all help is much appreciated. -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education?

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[libvirt-users] EPT Misconfiguration
by Andrei Perietanu 10 Mar '16

10 Mar '16

I am using libvirt 1.2.20. I noticed that when running some VMs (CentOS ) with 2G ram, 2CPUs each for some reason they go from 'state=running' to 'state=paused'; and they can't be restarted. They are un-usable. When this happens I get the following in dmesg output: [ 46.595265] EPT: Misconfiguration. [ 46.595271] EPT: GPA: 0xfee000b0 [ 46.595275] ept_misconfig_inspect_spte: spte 0x7e4968107 level 4 [ 46.595279] ept_misconfig_inspect_spte: spte 0x7e4961107 level 3 [ 46.595281] ept_misconfig_inspect_spte: spte 0x7e4960107 level 2 [ 46.595284] ept_misconfig_inspect_spte: spte 0x7e592ff77 level 1 I have seen discussions about this topic, but for older code versions. The problem happens often and I could not find a fix for it. Has anyone seen this?Is there a fix for it? Thanks, Andrei -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you receive this in error please contact the sender and delete the material from any computer immediately. It is the policy of Klas Limited to disavow the sending of offensive material and should you consider that the material contained in the message is offensive you should contact the sender immediately and also your I.T. Manager. Klas Telecom Inc., a Virginia Corporation with offices at 1101 30th St. NW, Washington, DC 20007. Klas Limited (Company Number 163303) trading as Klas Telecom, an Irish Limited Liability Company, with its registered office at Fourth Floor, One Kilmainham Square, Inchicore Road, Kilmainham, Dublin 8, Ireland.

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[libvirt-users] Zombie processes being created when console buffer is full
by Peter Steele 10 Mar '16

10 Mar '16

We have been researching stuck zombie processes in our libvirt lxc containers. What we found was: 1) Each zombie’s parent was pid 1. init which symlinks to systemd. 2) In some cases, the zombies were launched by systemd, in others the zombie was inherited. 3) While the child is in the zombie state, the parent process (systemd) /proc/1/status shows no pending signals. 4) Attaching gdb to systemd, there was 1 thread and it was waiting in write() and the file being written was /dev/console. This write() to the console never returns. We operated under the assumption that systemd's SIGCHLD handler sets a bit and a foreground thread (the only thread) would see that child processes needed reaping. While the single thread is stuck in write(), the reaping never takes place. So why is write() blocking? The answer seems to be that there is nothing draining the console and eventually it blocks write() when its buffers become full. When we attached to the container's console, the buffer is cleared allowing systemd’s write() to return. The zombies are then reaped and everything goes back to normal. Our “solution” was more of a workaround. systemd was altered to log errors/warnings/etc to /dev/null instead of /dev/console. This prevented the problem, only in that the console buffer was unlikely to get filled up since systemd generally is the only then that writes to it. This is definitely a hack though. This may be a bug in the libvirt container library (you can't expect something to periodically connect to a container's console to empty it out). We suspect there may also be a configuration issue in our containers with regards to the console. Has anyone else observed this problem? Peter _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users

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[libvirt-users] Buggy 1.3.2? Disconnected from qemu:///session due to I/O error
by Lars Kellogg-Stedman 10 Mar '16

10 Mar '16

I think I've hit the same problem that Predrag reported in http://comments.gmane.org/gmane.comp.emulators.libvirt.user/8825. With libvirt-1.3.2-1.fc23.x86_64 on Fedora 23, when I try uploading an image with vol-upload to a user libvirtd (qemu:///session): virsh vol-upload --pool default volume.qcow /path/to/file.qcow2 I am getting: error: Disconnected from qemu:///session due to I/O error error: cannot send data to volume volume.qcow2 error: Cannot write data: Broken pipe error: One or more references were leaked after disconnect from the hypervisor If I downgrade to libvirt-1.2.18.2-2.fc23.x86_64 (which is what actually ships in F23), the image upload completes without a problem. -- Lars Kellogg-Stedman <lars(a)redhat.com> | larsks @ {freenode,twitter,github} Cloud Engineering / OpenStack | http://blog.oddbit.com/

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[libvirt-users] removing virbr0
by Andrei Perietanu 10 Mar '16

10 Mar '16

I am building a custom Linux image which includes KVM and will be installed on multiple machines. By default when installing libvirt you get a 'default network' which adds a 'vrbr0'. I found several tutorials online about removing this 'virbr0' but I would like to not have it in the first place. I am compiling libvirt from source so I would think there is some compile time option or some configuration file I need to change for the default network not to be included. Thanks for your help! Andrei -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you receive this in error please contact the sender and delete the material from any computer immediately. It is the policy of Klas Limited to disavow the sending of offensive material and should you consider that the material contained in the message is offensive you should contact the sender immediately and also your I.T. Manager. Klas Telecom Inc., a Virginia Corporation with offices at 1101 30th St. NW, Washington, DC 20007. Klas Limited (Company Number 163303) trading as Klas Telecom, an Irish Limited Liability Company, with its registered office at Fourth Floor, One Kilmainham Square, Inchicore Road, Kilmainham, Dublin 8, Ireland.

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[libvirt-users] different uuids, but still "Attempt to migrate guest to same host" error
by Devin Reade 10 Mar '16

10 Mar '16

Background: ---------- I'm trying to debug a two-node pacemaker/corosync cluster where I want to be able to do live migration of KVM/qemu VMs. Storage is backed via dual-primary DRBD (yes, fencing is in place). When moving the VM between nodes via 'pcs resource move RES NODENAME', the live migration fails although pacemaker will shut down the VM and restart it on the other node. For the purpose of diagnosing things, on both nodes I've put SELinux into permissive mode and disabled firewalld. Interesting Bit: --------------- Debugging a bit further, I put the VM into an unmanaged state and then try with virsh, from the node currently running the VM: [root@node1 ~]# virsh migrate --live --verbose testvm qemu+ssh://node2/system error: internal error: Attempt to migrate guest to the same host node1.example.tld A quick google points toward uuid problems, however the two nodes are, afaict, working with different UUIDs. (Substantiating info shown toward the end.) I thought that since `hostname` only returns the node name and not the FQDN that perhaps there was internal qemu confusion about using the short node name vs FQDN. However fully qualifying it made no difference: [root@node1 ~]# virsh migrate --live --verbose testvm qemu+ssh://node2.example.tld/system error: internal error: Attempt to migrate guest to the same host node1.example.tld Running virsh with a debug level of 1 doesn't reveal anything interesting that I can see. Running libvirtd at that level shows that node2 is seeing node1.example.tld in the emitted XML in qemuMigrationPrepareDirect. I'm assuming that means the wrong node has been calculated somewhere prior to that. At this point I'm grasping at straws and looking for ideas. Does anyone have a clue-bat? Devin Config Info Follows: ------------------- CentOS Linux release 7.2.1511 (Core) libvirt on both nodes is 1.2.17-13 [root@node1 ~]# virsh sysinfo | grep uuid <entry name='uuid'>03DE0294-0480-05A4-B906-8E0700080009</entry> [root@node2 ~]# virsh sysinfo | grep uuid <entry name='uuid'>03DE0294-0480-05A4-B206-320700080009</entry> [root@node1 ~]# dmidecode -s system-uuid 03DE0294-0480-05A4-B906-8E0700080009 [root@node2 ~]# dmidecode -s system-uuid 03DE0294-0480-05A4-B206-320700080009 [root@node1 ~]# fgrep uuid /etc/libvirt/libvirtd.conf | grep -v '#' host_uuid = "875cb1a3-437c-4cb5-a3de-9789d0233e4b" [root@node2 ~]# fgrep uuid /etc/libvirt/libvirtd.conf | grep -v '#' host_uuid = "643c0ef4-bb46-4dc9-9f91-13dda8d9aa33" [root@node2 ~]# pcs config show ... Resource: testvm (class=ocf provider=heartbeat type=VirtualDomain) Attributes: hypervisor=qemu:///system config=/cluster/config/libvirt/qemu/testvm.xml migration_transport=ssh Meta Attrs: allow-migrate=true is-managed=false Operations: start interval=0s timeout=120 (testvm-start-interval-0s) stop interval=0s timeout=240 (testvm-stop-interval-0s) monitor interval=10 timeout=30 (testvm-monitor-interval-10) migrate_from interval=0 timeout=60s (testvm-migrate_from-interval-0) migrate_to interval=0 timeout=120s (testvm-migrate_to-interval-0) ... (The /cluster/config directory is a shared GlusterFS filesystem.) [root@node1 ~]# cat /etc/hosts | grep -v localhost 192.168.10.8 node1.example.tld node2 192.168.10.9 node2.example.tld node2 192.168.11.8 node1hb.example.tld node1hb 192.168.11.9 node2hb.example.tld node2hb (node1 and node2 are the "reachable" IPs and totem ring1. node1hb and node2hb form a direct connection via crossover cable for DRBD and totem ring0.)

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[libvirt-users] How to test if a console session is active?
by Peter Steele 10 Mar '16

10 Mar '16

I use libvirt to manage a container based environment. Is there an efficient method for testing if someone has a console session open for a given container? The approach I'm using at the moment is to use lsof and check if there is an entry for the container's console pts device. For example, I can determine a container's console device from its xml definition: # virsh dumpxml vm-00|grep -A 4 pty <console type='pty' tty='/dev/pts/3'> <source path='/dev/pts/3'/> <target type='lxc' port='0'/> <alias name='console0'/> </console> Once I have pts device, I can do something like # if lsof /dev/pts/3; then echo "Container vm-00 has an active console session"; fi This all works fine but we've found that lsof is very expensive. Is there a more efficient means to make this active console check? Peter

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[libvirt-users] Problems creating a LXC rootfs to be used with virt-manager
by Markus Rhonheimer 09 Mar '16

09 Mar '16

Hello everyone, Laine Stump over at OFTC #virt was kind enough to point me to this email address. I am trying to run a LXC OS container with virt-manager and found out, that I need to create the rootfs with LXC/LXD and then point virt-manager to the rootfs location. ( I am running Ubuntu 16.04 inside a virtual machine [kvm] for testing) Both "lxc-create" and "lxc launch" worked to create the rootfs and run the VMs. When I tried to add them to virt-manager I always get error messages like this: https://postimg.org/image/lkqn1ery5/ the configuration looks like this: http://pastebin.com/fg1JFCRX I would appreciate any help. kind regards, Markus

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[libvirt-users] unable to create preallocated image with gluster protocol
by SATHEESARAN 09 Mar '16

09 Mar '16

Hi All, When I tried to create preallocated image with gluster , I am unable to create one The image gets created but not preallocated. [root@ ]# qemu-img create -f qcow2 -o preallocation=full gluster://host1.lab.eng.blr.redhat.com/rep3vol/vm3.img 3G Formatting 'gluster://dhcp37-61.lab.eng.blr.redhat.com/rep3vol/newvm3.img', fmt=qcow2 size=3221225472 encryption=off cluster_size=65536 preallocation='full' Unknown option 'preallocation' Is it a known issue ? -- Satheesaran S

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[libvirt-users] (no subject)
by nidhi d 08 Mar '16

08 Mar '16

How do i add a new rpc to the existing code ?

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[libvirt-users] How to measure memory utilizatin of guest when dommemstat reports "RSS" is more than "ACTUAL"?
by suyog jadhav 08 Mar '16

08 Mar '16

How to measure memory utilizatin of guest when dommemstat reports "RSS" is more than "ACTUAL"? Following is the output on RHEL 6.6 # dommemstat 1 actual 16777216 rss 16890372 # dommemstat 2 actual 16777216 rss 16460516 I found following article on Redhat which suggests that this is normal/expected? https://access.redhat.com/solutions/2017943 Now we use following formula to calculate the memory utilization. mem_util = (rss/actual)*100 now this gives more that 100% as the result. We use the libvirt library to call the virDomainMemoryStats. (which is the same used by the "virsh dommemstat" command) If we can't use the RSS as the "used memory", what else should be used to calculate the same? What is the ideal approach to report memory utilization of guest from the KVM host?

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[libvirt-users] Compiling qemu
by Dominique Ramaekers 08 Mar '16

08 Mar '16

Hi, I've installed qemu 2.5 through the package manager. There is a bug which blocks making an external snapshot for the second time. A fix is released: https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg06163.html I thought, why not download the source, apply the patch, build + make and then copy qemu-system-x86_64 to the /usr/bin/ folder..... But if I do 'virsh start my_vm', I get these errors: fout: internal error: early end of file from monitor, possible problem: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2] warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2] qemu: could not load PC BIOS 'bios-256k.bin' First: What can I do about the 'host doesn't support requested feature'? Second: I think the compiled binary doesn't look for the bios-256k.bin in the right place? Help wil be much apreciated... Greetings, Dominique.

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[libvirt-users] Traffic mirroring
by Renich Bon Ciric 07 Mar '16

07 Mar '16

Hello, We're interested in mirroring traffic from a host's guests to another host's guest. We've been able to achieve that on the same host; redirecting traffic from the host's bridge interface (VLAN) to one of the guest's in the same host by using the tc command. But, when it comes to traffic from one host to the other, we haven't been able to pull it through. Please, check out this image: http://ctrlv.in/720433 In this case, we are able to mirror the traffic from host11 into the Ubuntu guest; but not the traffic from host10 or host9 into the Ubuntu guest on host11. Any help regarding this is appreciated. Thank you. -- Renich Bon Ciric Operations | CloudSigma ==================== This email is from CLOUDSIGMA AG. The contents of this email and any attachments are confidential to the intended recipient. They may not be disclosed to or used by or copied in any way by anyone other than the intended recipient. If this email is received in error, please contact CLOUDSIGMA AG on +41 (0)44 585 39 07 quoting the name of the sender and the email address to which it has been sent and then delete it. Please note that neither CLOUDSIGMA AG nor the sender accepts any responsibility for viruses and it is your responsibility to scan or otherwise check this email and any attachments. CLOUDSIGMA AG is a public limited company registered in Canton Zürich, Switzerland (registered number CH-020.3.034.422-0) with registered offices at Badenerstrasse 549, 8048 Zurich, Switzerland. For further information, please refer to www.cloudsigma.com . ====================

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[libvirt-users] Convincing libvirt to create a bridge device?
by Lars Kellogg-Stedman 07 Mar '16

07 Mar '16

I was hoping that I could delegate creation of bridge devices to libvirt for address-less bridges, in order to not have to deal with the various ways distributions handle persistent network configuration, but while this creates a libvirt network... <network> <name>provision</name> <forward mode='bridge'/> <bridge name='brprov'/> </network> ...it doesn't actually create the bridge. Configuring the bridge using either <forward mode="route"/> or <forward mode="nat"/> *will* create the bridge device, but both of these require assigning an address to the bridge which means I have to suddenly worry about IPAM and conflicts with local networks. I look at the various interface-related commands, and there is an "iface-bridge" command but this requires a physical interface. Is there any way to convince libvirt to create the bridge device for a <forward mode='bridge'/> network? -- Lars Kellogg-Stedman <lars(a)redhat.com> | larsks @ {freenode,twitter,github} Cloud Engineering / OpenStack | http://blog.oddbit.com/

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[libvirt-users] [libvirt-1.3.2]'Disconnected from qemu:///session due to I/O error'
by Predrag Ivanovic 05 Mar '16

05 Mar '16

Hi. Since the update to libvirt-1.3.2, virsh keeps disconnecting from qemu:///session. Weirdly enough, qemu:///session works fine for root, and qemu:///system works for both the user and the root. With the same configuration(tarball with files from /etc/libvirt attached), libvirt-1.3.1 works without problems. From the virsh debug log(attached): --- grep error virsh.log.1.3.2 2016-03-03 19:19:20.338+0000: 5589: error : virNetSocketReadWire:1613 : End of file while reading data: Input/output error 2016-03-03 19:19:46.261+0000: 5578: error : virConnectUnregisterCloseCallback:1282 : Requested operation is not valid: A different callback was requested 2016-03-03 19:22:59.308+0000: 14487: error : virNetSocketReadWire:1613 : End of file while reading data: Input/output error 2016-03-03 19:23:29.247+0000: 14486: error : virConnectUnregisterCloseCallback:1282 : Requested operation is not valid: A different callback was requested 2016-03-03 19:24:49.521+0000: 14487: error : virKeepAliveTimerInternal:143 : internal error: connection closed due to keepalive timeout 2016-03-03 19:25:17.043+0000: 14486: error : virConnectUnregisterCloseCallback:1282 : Requested operation is not valid: A different callback was requested 2016-03-03 19:25:47.110+0000: 14487: error : virNetSocketReadWire:1613 : End of file while reading data: Input/output error 2016-03-03 19:26:18.573+0000: 14486: error : virConnectUnregisterCloseCallback:1282 : Requested operation is not valid: A different callback was requested 2016-03-03 19:28:24.142+0000: 14665: error : virNetSocketReadWire:1613 : End of file while reading data: Input/output error 2016-03-03 19:28:55.091+0000: 14664: error : virConnectUnregisterCloseCallback:1282 : Requested operation is not valid: A different callback was requested --- From the virt-manager.log (attached): --- [Thu, 03 Mar 2016 18:39:38 virt-manager 24388] DEBUG (connection:1310) Error polling connection qemu:///session if ret is None: raise libvirtError ('virNodeGetInfo() failed', conn=self) libvirtError: internal error: client socket is closed if ret == -1: raise libvirtError ('virConnectDomainEventDeregisterAny() failed', conn=self) libvirtError: internal error: client socket is closed [Thu, 03 Mar 2016 19:07:14 virt-manager 5191] ERROR (create:667) Error setting create wizard conn state. if ret is None: raise libvirtError ('virConnectGetCapabilities() failed', conn=self) libvirtError: internal error: client socket is closed [Thu, 03 Mar 2016 19:07:15 virt-manager 5191] DEBUG (connection:1310) Error polling connection qemu:///session if ret is None: raise libvirtError ('virNodeGetInfo() failed', conn=self) libvirtError: internal error: client socket is closed if ret == -1: raise libvirtError ('virConnectDomainEventDeregisterAny() failed', conn=self) libvirtError: internal error: client socket is closed [Thu, 03 Mar 2016 19:08:19 virt-manager 5191] DEBUG (connection:1310) Error polling connection qemu:///session if ret is None: raise libvirtError ('virNodeGetInfo() failed', conn=self) libvirtError: internal error: client socket is closed if ret == -1: raise libvirtError ('virConnectDomainEventDeregisterAny() failed', conn=self) libvirtError: internal error: client socket is closed [Thu, 03 Mar 2016 19:11:19 virt-manager 5191] DEBUG (connection:1310) Error polling connection qemu:///system if ret is None: raise libvirtError ('virNodeGetInfo() failed', conn=self) libvirtError: internal error: client socket is closed if ret == -1: raise libvirtError ('virConnectDomainEventDeregisterAny() failed', conn=self) libvirtError: internal error: client socket is closed --- qemu:///system errors above are due to restarting libvirtd, once virt-manager connected to it, it stayed connected. This is with qemu-2.5.0. I could try libvirt master from git, but will it break libvirt-python/virt-manager? Btw, is building libvirt with '--enable-debug' sufficient for useful gdb debug report, or do you need anything else? Thank you. Pedja

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[libvirt-users] network checksum offloading broken using virtio
by Dennis Jacobfeuerborn 05 Mar '16

05 Mar '16

Hi, with recent guest installs (both centos 5 and 7) on centos 7 hosts I seem to have to disable checksum offloading using "ethtool -K eth0 tx off" in order to allow traffic to flow a specific route. Basically the guest is installed with IP 192.168.21.10 and a default gateway of 192.168.21.254. Up until that point I can ssh into the system normally. There exists an OpenVPN System with the IP 192.168.21.1 that choses client IP's for the vpn connections from the pool 192.168.20.0/24. In order to pass the reponses back to the OpenVPN system I installed the route "192.168.20.0/24 via 192.168.21.1 dev eth0". When I now ping the IP 192.168.21.10 through the VPN connection this works fine but when I try to ssh into that system the connection just hangs. Looking at a tcpdump I noticed that the checksum for the packets weren't quite right so I issued a "ethtool -K eth0 tx off" and suddenly everything worked as expected. What is strange here is that I'm seeing this with both CentOS 5 and CentOS 7 guests and only when dealing with th routed traffic and not the regular one. Does anyone have an idea what is going on here? Could this be an issue with the virtio driver? Regards, Dennis

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[libvirt-users] Why are virsh vol-upload/vol-download so slow?
by Lars Kellogg-Stedman 04 Mar '16

04 Mar '16

I was interested in using 'virsh vol-upload' and 'virsh vol-download', rather than mucking about directly with the filesystem. But while simply copying the image is relatively quick: # ls -l /var/lib/libvirt/images/centos-7-cloud.qcow2 -rw-r--r--. 1 qemu qemu 1004994560 Apr 15 2015 centos-7-cloud.qcow2 # time cp /var/lib/libvirt/images/centos-7-cloud.qcow2 /tmp/myimage.qcow2 real 0m10.829s user 0m0.024s sys 0m1.668s Trying to do the same thing with `virsh vol-download` is glacial: # time virsh vol-download --pool default centos-7-cloud.qcow2 /tmp/myimage.qcow2 I killed it after 10 minutes: real 10m20.775s user 10m19.451s sys 0m1.887s After which is was about halfway through: # ls -l /tmp/myimage.qcow2 -rw-r--r--. 1 root root 564920248 Mar 4 11:11 /tmp/myimage.qcow2 What is up with that? -- Lars Kellogg-Stedman <lars(a)redhat.com> | larsks @ {freenode,twitter,github} Cloud Engineering / OpenStack | http://blog.oddbit.com/

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[libvirt-users] control virtualbox from virsh
by jeremy.huylebroeck＠orange.com 03 Mar '16

03 Mar '16

Hi. I am running virtualbox 4.3 on Mac OS X 10.11.12 and libvirtd 1.3.1 (installed with brew). I want to control the virtual machines via virsh. On libvirtd, I enabled tcp mode, removed all the authentication etc.. It's a development environment, so no worries here. It allows me to make a call such as: virsh –c vbox+tcp://172.30.5.51/session list —all 172.30.5.51 being my Mac IP address. Virsh connects successfully to libvirtd (I see my request in the log) but the "list —all" returns an error. virsh -c vbox+tcp://172.30.5.51/session list --all error: Failed to list domains error: invalid connection pointer in virGetDomain Based on the debug logs, it appears the vbox driver is properly used 2016-03-03 22:27:44.415+0000: 18446744073709551615: debug : do_open:1003 : name "vbox:///session" to URI components: scheme vbox server <null> user <null> port -1 path /session (…) 2016-03-03 22:27:44.416+0000: 18446744073709551615: debug : do_open:1050 : trying driver 4 (VBOX) ... 2016-03-03 22:27:44.416+0000: 18446744073709551615: debug : virArchFromHost:181 : Mapped x86_64 to 32 (x86_64) 2016-03-03 22:27:44.416+0000: 18446744073709551615: info : virObjectNew:202 : OBJECT_NEW: obj=0x7fa41950b2c0 classname=virCaps 2016-03-03 22:27:44.416+0000: 18446744073709551615: debug : virArchFromHost:181 : Mapped x86_64 to 32 (x86_64) 2016-03-03 22:27:44.416+0000: 18446744073709551615: info : virObjectNew:202 : OBJECT_NEW: obj=0x7fa41a208da0 classname=virDomainXMLOption 2016-03-03 22:27:44.416+0000: 18446744073709551615: debug : vboxConnectOpen:460 : in vboxOpen 2016-03-03 22:27:44.416+0000: 18446744073709551615: debug : do_open:1065 : driver 4 VBOX returned SUCCESS But later there is this error: 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virThreadJobSet:96 : Thread 18446744073709551615 (virNetServerHandleJob) is now running job remoteDispatchConnectListAllDomains 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollCleanupTimeouts:526 : Cleanup 2 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : remoteDispatchConnectListAllDomainsHelper:1219 : server=0x7fa419700040 client=0x7fa4196037c0 msg=0x7fa41a201280 rerr=0x700000415d40 args=0x7fa419602c90 ret=0x7fa419600ad0 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollCleanupHandles:575 : Cleanup 5 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virConnectListAllDomains:6701 : conn=0x7fa41950afe0, domains=0x700000415c40, flags=3 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollMakePollFDs:401 : Prepare n=0 w=1, f=5 e=1 d=0 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollMakePollFDs:401 : Prepare n=1 w=2, f=7 e=1 d=0 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollMakePollFDs:401 : Prepare n=2 w=3, f=9 e=1 d=0 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollMakePollFDs:401 : Prepare n=3 w=4, f=11 e=1 d=0 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollMakePollFDs:401 : Prepare n=4 w=8, f=12 e=1 d=0 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollCalculateTimeout:338 : Calculate expiry of 2 timers 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollCalculateTimeout:346 : Got a timeout scheduled for 1457044069419 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollCalculateTimeout:359 : Schedule timeout then=1457044069419 now=1457044064420 2016-03-03 22:27:44.420+0000: 18446744073709551615: debug : virEventPollCalculateTimeout:369 : Timeout at 1457044069419 due in 4999 ms 2016-03-03 22:27:44.420+0000: 18446744073709551615: info : virEventPollRunOnce:641 : EVENT_POLL_RUN: nhandles=5 timeout=4999 2016-03-03 22:27:44.421+0000: 18446744073709551615: error : virGetDomain:203 : invalid connection pointer in virGetDomain 2016-03-03 22:27:44.422+0000: 18446744073709551615: debug : virThreadJobClear:121 : Thread 18446744073709551615 (virNetServerHandleJob) finished job remoteDispatchConnectListAllDomains with ret=-1 The full log is here http://pastebin.com/raw/83Fgs5MZ I've been digging around but can't find anything I should change in my configuration or in virtualbox. I poked in the libvirt code, but I am not a C developer, so can't really figure it out. Any chance somebody sees a solution to this? There must be something obvious that I don't see… Thanks! _________________________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. Thank you.

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[libvirt-users] Configuring default network/storage for qemu:///session
by catern＠catern.com 03 Mar '16

03 Mar '16

Hi libvirt-user, If I run (as a normal user): virsh -c qemu:///session net-list --all virsh -c qemu:///session pool-list --all I see a default network and a default pool. And indeed, these appear in the persistent configuration. It seems these are created the first time libvirtd is (auto)started in qemu:///session mode. Is it possible to configure the attributes of the default network and default pool that are created? This is to provide configuration for newly created users. Normally I would just put some default configuration in /etc/skel. But it seems that a UUID element needs to be present in the network and pool configuration. And so for my configuration to be correct I either need to wrap add some special sauce to adduser that generates several UUIDs and puts them in the configuration, or just generate the UUIDs in advance and let them be copied to all users. Currently I'm taking the second option, so all users have the same UUID for their default network and pool. I don't know if that might hurt me in the future, but it certainly seems distasteful. Thanks!

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[libvirt-users] libvirt_driver_storage.so /usr/lib64/../lib64/libfl.so.2: undefined symbol: yylex
by Matthew Schumacher 03 Mar '16

03 Mar '16

Hello List, I'm trying to get libvirt to work on slackware64-current (slackware64-14.2 beta) and while it compiles just fine, it refuses to run because of an undefined symbol: 2016-03-01 20:09:26.822+0000: 27849: error : virDriverLoadModule:73 : failed to load module /usr/lib64/libvirt/connection-driver/libvirt_driver_storage.so /usr/lib64/../lib64/libfl.so.2: undefined symbol: yylex I'm not really doing anything odd, here is my configure options in my package building script: ./configure \ --prefix=/usr \ --libdir=/usr/lib64 \ --bindir=/usr/sbin \ --sbindir=/usr/sbin \ --sysconfdir=/etc \ --localstatedir=/var \ --mandir=/usr/man \ --docdir=/usr/doc/libvirt-1.3.3 \ --enable-static=no \ --enable-shared=yes \ --with-yajl \ --with-python=/usr \ --with-qemu-group=users \ --with-init-script=none \ --with-storage-iscsi Looks like the old slackware64-14.1 had flex compiled statically and the new version is an SO, so I figure that's why this didn't happen on the older slackware. Any thoughts on how to fix this?

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[libvirt-users] Live migration - backing file
by Marc-Aurèle Brothier - Exoscale 03 Mar '16

03 Mar '16

Hi! I'm testing the live migration on libvirt + KVM, the VMs are using non-shared local storage only. If I run a live migration with --copy-storage-full, the final disk file on the remote host after the migration has a full blown size of the specified value (10G) in my case, instead of the few MB on the source host before the migration. Running qemu-img I can see that the ref for the backing file is gone. on source host: $ ls -lh 3129b8a8-eca4-4b05-878a-66c2771b501f gives me 18MB $ qemu-img info 3129b8a8-eca4-4b05-878a-66c2771b501f image: 3129b8a8-eca4-4b05-878a-66c2771b501f file format: qcow2 virtual size: 10G (10737418240 bytes) disk size: 17M cluster_size: 65536 backing file: /var/lib/libvirt/images/34fa65ce-483b-4ffa-88f8-75f6ebf670c1 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 corrupt: false >> I run a migration with --live --copy-storage-all on destination host: $ ls -lh 3129b8a8-eca4-4b05-878a-66c2771b501f gives me 11GB $ qemu-img info 3129b8a8-eca4-4b05-878a-66c2771b501f image: 3129b8a8-eca4-4b05-878a-66c2771b501f file format: qcow2 virtual size: 10G (10737418240 bytes) disk size: 817M cluster_size: 65536 Format specific information: compat: 0.10 refcount bits: 16 Is there a way to keep the backing file reference for live migration or planned development (if this file is also available on the destination host)? I also tried with --copy-storage-inc but the disk image on the destination is invalid as it lost the backing file and only copied the diff, so the base image files are gonne. Moreover, the file size on the disk is also of 10GB with that parameter. Regards, Marc-Aurèle Brothier Exoscale

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[libvirt-users] ceph and libxl errors attaching device
by Iban Cabrillo 03 Mar '16

03 Mar '16

Dear, I need to attach some ceph (0.94.6) block devices to our openstack (kilo) running instances (xen 4.4) . Nova is able to create volumes, attach a detach (alt least there are no errors) The hypervisor can see the blockdevice: # rbd -p volumes ls volume-xxxxxxxx-7342-434b-9xx1-d046bcxxxxfd And the instance xml seems to be ok: ................. <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='none'/> <auth username='cinder'> <secret type='ceph' uuid='xxxxxxxx-e53a-4xx7-9bc9-9bcc41xxxxe4'/> </auth> <source protocol='rbd' name='volumes/volume-xxxxxxxx-7342-434b-9xx1-d046bcxxxxfd'> <host name='10.10.3.1' port='6789'/> <host name='10.10.3.2' port='6789'/> <host name='10.10.3.3' port='6789'/> </source> <target dev='xvdd' bus='xen'/> <serial>xxxxxxxx-7342-434b-9xx1-d046bcxxxxfd</serial> </disk> But there is no way to attach the device to running machine, I only see this error on libxl : libxl: debug: libxl.c:3538:libxl_device_disk_add: ao 0x7fe248006080: create: how=(nil) callback=(nil) poller=0x7fe24000ce20 libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=xvdd spec.backend=qdisk libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch w=0x7fe248001780: deregister unregistered libxl: debug: libxl_event.c:1591:libxl__ao_complete: ao 0x7fe248006080: complete, rc=0 libxl: debug: libxl.c:3538:libxl_device_disk_add: ao 0x7fe248006080: inprogress: poller=0x7fe24000ce20, flags=ic libxl: debug: libxl_event.c:1563:libxl__ao__destroy: ao 0x7fe248006080: destroy Seems like qdisk backend is not able to manage the volume Any idea? -- ############################################################################ Iban Cabrillo Bartolome Instituto de Fisica de Cantabria (IFCA) Santander, Spain Tel: +34942200969 PGP PUBLIC KEY: http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC ############################################################################ Bertrand Russell: *"El problema con el mundo es que los estúpidos están seguros de todo y los inteligentes están llenos de dudas*"

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[libvirt-users] VM's in a HA-configuration - synchronising vm config files
by Lentes, Bernd 02 Mar '16

02 Mar '16

Hi, i'd like to establish a HA-Cluster with two nodes. My services will run inside vm's, the vm's are stored on a FC SAN, so every host has access to the vm's. But how can i keep the config files (xml-files under /etc/libvirt/qemu) synchronised ? Is there a possibility to store the config files somewhere else ? E.g. a partitition with ocfs2 on the SAN ? If not, what would you do ? Otherweise i'm thinking of a cron-job who synchronises the file each minute with rsync. Bernd -- Bernd Lentes Systemadministration institute of developmental genetics Gebäude 35.34 - Raum 208 HelmholtzZentrum München bernd.lentes(a)helmholtz-muenchen.de phone: +49 (0)89 3187 1241 fax: +49 (0)89 3187 2294 Wer Visionen hat soll zum Hausarzt gehen Helmut Schmidt Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) Ingolstaedter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Dr. Alfons Enhsen, Renate Schlusen (komm.) Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671

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[libvirt-users] which is the config file for a vm ?
by Lentes, Bernd 02 Mar '16

02 Mar '16

Hi, i have a weird problem. I have a vm (KVM) which seems to run fine. I believe the respective config file for this vm is /etc/libvirt/qemu/MausDB.xml. This is it: ========================================================= <domain type='kvm'> <name>MausDB</name> <uuid>d4c7956c-b57f-967a-0454-99835a3a740b</uuid> <memory unit='KiB'>2353792</memory> <currentMemory unit='KiB'>2353792</currentMemory> <vcpu placement='static'>2</vcpu> <os> <type arch='x86_64' machine='pc-i440fx-1.4'>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>destroy</on_crash> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/lib/kvm/images/MausDB/disk0.raw'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hda' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'/> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:37:92:03'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <input type='mouse' bus='ps2'/> <input type='keyboard' 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='0x05' function='0x0'/> </memballoon> </devices> </domain> ============================================================= As you see, the vm has one NIC. Its MAC-Address is: '52:54:00:37:92:03'. I also see that MAC when i edit the config via virsh. But when i boot that vm, it has a nic with another MAC: '52:54:00:37:92:B2' ??? lspci shows me just one nic in the vm. This MAC-Address is also visible in the Virtual Machine Manager. Pictures you find here: https://hmgubox.helmholtz-muenchen.de:8001/d/51feb02c02/ I thought the xml-file in /etc/libvirt/qemu ist the only responsable one. It is that one which is configured when i issue a 'edit domain' in virsh. Or ? Where does the VMM stores the configuration of the domains ? I found another xml: /var/run/libvirt/qemu/MausDB.xml . Inside it there is the MAC the booted vm has. What is the purpose of this xml ? Also ps inside the host shows the MAC which is in the booted vm: root 28237 4.8 2.4 2886084 2416116 ? Sl Feb29 55:16 /usr/bin/qemu-kvm -name MausDB -S -machine pc-i440fx-1.4,accel=kvm,usb=off -m 2299 -smp 2,sockets=2,cores=1,threads=1 -uuid d4c7956c-b57f-967a-0454-99835a3a740b -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/MausDB.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/kvm/images/MausDB/disk0.raw,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive if=none,id=drive-ide0-0-0,readonly=on,format=raw -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,fd=22,id=hostnet0,vhost=on,vhostfd=23 -device virtio-net-pci,netdev=hostnet0,id=net0, mac=52:54:00:37:92:b2,bus=pci.0,addr=0x3 -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 Can anyone help sorting this out ? Bernd -- Bernd Lentes Systemadministration institute of developmental genetics Gebäude 35.34 - Raum 208 HelmholtzZentrum München bernd.lentes(a)helmholtz-muenchen.de phone: +49 (0)89 3187 1241 fax: +49 (0)89 3187 2294 Wer Visionen hat soll zum Hausarzt gehen Helmut Schmidt Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) Ingolstaedter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Dr. Alfons Enhsen, Renate Schlusen (komm.) Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671

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[libvirt-users] Insert iptables rules with network hook
by Dieter Späth 01 Mar '16

01 Mar '16

Hi, I want to add iptables rules between existing rules and the rules created by libvirt (forward type=nat). I did try the hook /etc/libvirt/hooks/network network_name start begin - and /etc/libvirt/hooks/network network_name started begin - It seems like the libvirt iptables rules are already inserted when this hook is executed. Simply use I instead of A does not work either because the rules should be inserted between the existing one and the libvirt rules. Also the custom rules should be deleted after the hoook /etc/libvirt/hooks/network network_name stopped end - is executed. Does a hook exists which is executed after the network is started but before the libvirt rules are inserted? Is it possible the use a custom chain for the libvirt iptables rules instead of directly writing them into the INPUT chain? I think of some thing like INPUT VIRT_VIBR0 all -- * virbr0 0.0.0.0/0 0.0.0.0/0 VIRT_VIBR0 all -- virbr0 * 0.0.0.0/0 0.0.0.0/0 and VIRT_VIBR0 ACCEPT all -- * virbr0 0.0.0.0/0 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- virbr0 * 192.168.122.0/24 0.0.0.0/0 ACCEPT all -- virbr0 virbr0 0.0.0.0/0 0.0.0.0/0 REJECT all -- * virbr0 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable REJECT all -- virbr0 * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable thanks & regards dieter

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