June 2016 - Users - libvirt List Archives

[libvirt-users] ceph rbd pool and libvirt manageability (virt-install)
by Jelle de Jong 29 Aug '18

29 Aug '18

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everybody, I created a rbd pool and activated it, but I can't seem to create volumes in it with virsh or virt-install? # virsh pool-dumpxml myrbdpool <pool type='rbd'> <name>myrbdpool</name> <uuid>2d786f7a-2df3-4d79-ae60-1535bcf1c6b5</uuid> <capacity unit='bytes'>6997998301184</capacity> <allocation unit='bytes'>10309227031</allocation> <available unit='bytes'>6977204658176</available> <source> <host name='ceph01.powercraft.nl' port='6789'/> <host name='ceph02.powercraft.nl' port='6789'/> <host name='ceph03.powercraft.nl' port='6789'/> <name>libvirt-pool</name> <auth type='ceph' username='libvirt'> <secret uuid='029a334e-ed57-4293-bb99-ffafa8867122'/> </auth> </source> </pool> # virt-install --version 1.0.1 # virsh --version 1.2.9 I ended using virsh edit ceph-test.powercraft.nl and making creating the disk manually. <disk type='network' device='disk'> <auth username='libvirt'> <secret type='ceph' uuid='029a334e-ed57-4293-bb99-ffafa8867122'/> </auth> <source protocol='rbd' name='libvirt-pool/kvm01-storage'> <host name='ceph01.powercraft.nl' port='6789'/> <host name='ceph02.powercraft.nl' port='6789'/> <host name='ceph03.powercraft.nl' port='6789'/> </source> <target dev='vdc' bus='virtio'/> </disk> I use virt-install a lot to define, import and undefine domains, how can I use virt-install to manage my rdb disks? Kind regards, Jelle de Jong -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iJwEAQECAAYFAlV1xlQACgkQ1WclBW9j5HkbPQP+PjNrzvlqysslOp2Yk7wH4Mxy 2sh2dn96G0KOAHEeEn3BN6IWlnD1TADZbHdpTtMwkdv48Xwn0sP1s+3QDM4pb3gP n+z+dVxS8FouDIy/eiso3IBCj3g4TWbEX8ZHqs3jKqe0lZgAXBzB9xYSUowcEBrZ ddkPbr8p8ozWyOG+9V8= =lkK7 -----END PGP SIGNATURE-----

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[libvirt-users] virRandomBits - not very random
by Brian Rak 01 Jun '18

01 Jun '18

I just ran into an issue where I had about 30 guests get duplicate mac addresses assigned. These were scattered across 30 different machines. Some debugging revealed that: 1) All the host machines were restarted within a couple seconds of each other 2) All the host machines had fairly similar libvirtd pids (within ~100 PIDs of each other) 3) Libvirt seeds the RNG using 'time(NULL) ^ getpid()' This perfectly explains why I saw so many duplicate mac addresses. Why is the RNG seed such a predictable value? Surely there has to be a better source of a random seed then the timestamp and the pid? The PID seems to me to be a very bad source of any randomness. I just ran a test across 60 of our hosts. 43 of them shared their PID with at least one other machine.

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[libvirt-users] stream finish throws exception via python API
by Shahar Havivi 28 Nov '16

28 Nov '16

Hi, The following snippet works fine e.g. receiving the data but when calling stream.finish() we get the following error: stream = con.newStream() vol.download(stream, 0, 0, 0) buf = stream.recv(1024) stream.finish() libvirt: I/O Stream Utils error : internal error: I/O helper exited abnormally Traceback (most recent call last): File "./helpers/kvm2ovirt", line 149, in <module> download_volume(vol, item[1], diskno, disksitems, pksize) File "./helpers/kvm2ovirt", line 102, in download_volume stream.finish() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 5501, in finish if ret == -1: raise libvirtError ('virStreamFinish() failed') libvirt.libvirtError: internal error: I/O helper exited abnormally Am I doing something wrong? Thank you, Shahar.

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[libvirt-users] Windows guest and virtio serial port
by Tadas 01 Jul '16

01 Jul '16

I'm not sure, if it's correct mailing list to post this problem to. I'm having problems with Windows guest and virtio serial port. According to this manual: http://www.spice-space.org/page/Whiteboard/AgentProtocol I should get a named pipe on my guest VM after I create VirtIO sedial device and spicevmc channel. This works without any problems on Linux guest: ls /dev/virtio-ports/ com.redhat.spice.0 But on Windows guest I can see no such pipe: PipeList v1.01 by Mark Russinovich http://www.sysinternals.com Pipe Name Instances Max Instances --------- --------- -------- ----- InitShutdown 3 -1 lsass 4 -1 ntsvcs 3 -1 scerpc 3 -1 Winsock2\CatalogChangeListener-2b8-0 1 1 epmapper 3 -1 Winsock2\CatalogChangeListener-1ac-0 1 1 LSM_API_service 3 -1 TermSrv_API_service 3 -1 Ctx_WinStation_API_service 3 -1 eventlog 3 -1 Winsock2\CatalogChangeListener-174-0 1 1 atsvc 3 -1 wkssvc 6 -1 Winsock2\CatalogChangeListener-16c-0 1 1 SessEnvPublicRpc 3 -1 spoolss 3 -1 Winsock2\CatalogChangeListener-550-0 1 1 trkwks 3 -1 NlaSvcTask 1 -1 srvsvc 5 -1 browser 3 -1 Winsock2\CatalogChangeListener-710-0 1 1 Winsock2\CatalogChangeListener-228-0 1 1 Winsock2\CatalogChangeListener-230-0 1 1 HPUPDMon 1 1 MsFteWds 2 -1 PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER 1 -1 TDLN-3772-41 1 2 TDLN-3216-41 1 2 virtio serial drivers are installed on Windows guest VM. What I am missing here? Thank you.

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[libvirt-users] pci slot increases after several times interface attach and detach
by Huanle Han 30 Jun '16

30 Jun '16

hi, I have a question about interface hotplug. I attach and detach interface from vm for several times. I find the pci slot of interface increases in live xml while keep unchanged in config xml. Here is my test script and result: Test Script: #!/bin/bash VM=ub1504b print_xml() { echo "$* : ========inactive===========" virsh dumpxml --inactive $VM |grep -A 20 "<interface" |grep "mac\|slot" echo "$* : ======== active===========" virsh dumpxml $VM |grep -A 20 "<interface" |grep "mac\|slot" } print_xml begin_ virsh attach-device --config --live $VM if1.xml print_xml attach virsh detach-device --config --live $VM if1.xml print_xml detach Result: begin_ : ========inactive=========== <mac address='0c:da:41:1e:02:9c'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> begin_ : ======== active=========== <mac address='0c:da:41:1e:02:9c'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> Device attached successfully attach : ========inactive=========== <mac address='0c:da:41:1e:02:9c'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> <mac address='0c:da:11:11:11:11'/> <address type='pci' domain='0x0000' bus='0x00' slot='*0x0c*' function='0x0'/> attach : ======== active=========== <mac address='0c:da:41:1e:02:9c'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> <mac address='0c:da:11:11:11:11'/> <address type='pci' domain='0x0000' bus='0x00' slot='*0x0d*' function='0x0'/> Device detached successfully detach : ========inactive=========== <mac address='0c:da:41:1e:02:9c'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> detach : ======== active=========== <mac address='0c:da:41:1e:02:9c'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> When execute the script for more than 1 times, You can see the pci slot of attached interface in live xml differs from the one in config xml. Is this intentional or a bug ? If not a bug, why?

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[libvirt-users] Creating external snapshots with logical volumes.
by Dominique Ramaekers 28 Jun '16

28 Jun '16

Hi, Quick question regarding external snapshots. Currently, for making backups of my guests, I use external snapshots like this: virsh snapshot-create-as --domain PCVIRTdra --disk-only --atomic --quiesce --no-metadata --diskspec vda,file=/srv/poolVMS/PCVIRTdra-ONDERHOUD If I wanted to use a logical volume as destination behind the '--diskspec' option, can I do this like this? virsh snapshot-create-as --domain PCVIRTdra --disk-only --atomic --quiesce --no-metadata --diskspec vda,file=/dev/CmsrvVH3-vg/PCVIRTdra-ONDERHOUD It seems to work, but if this is never intended to be used like this, I would rather not... I ask this question because it seems libvirt is actually recognizing the logical volume as a file: root@CmsrvVH3:~# virsh domblklist PCVIRTdra --details Type Device Target Source ------------------------------------------------ file disk vda /dev/CmsrvVH3-vg/PCVIRTdra-ONDERHOUD file cdrom hdb /srv/poolVMS/Windows10_x64.iso file cdrom hdc /srv/poolVMS/virtiodrivers.iso Is there a better way of doing this? Thanks in advance, Dominique.

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[libvirt-users] block commit failed at 100%
by Ishmael Tsoaela 27 Jun '16

27 Jun '16

Hi All, I am new to libvirt and would appreciated some assistance with libvirt backups. I am backing up some VM and coming accross and issue where "Block commit" does not completely finish, causing libvirt to write to snapshot: root@xxx:~# virsh blockjob vm /mnt/diskimage-backups/vm.snap-201606210230.qcow2 --info Active Block Commit: [100 %] The state does not change, is the anyway around this ? libvirtd (libvirt) 1.3.4 QEMU emulator version 2.3.0

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[libvirt-users] Problem executing VM backups
by Markus Ellinger 24 Jun '16

24 Jun '16

Hi everyone, we are suddenly having a problem with executing our backup jobs. For a long time, we have used a shell script which contains the following code to backup all our virtual machines: for domain in Testserver Faktura Fileserver Gitolite Jenkins Nexus SimpleHelp VpnGateway Wiki; do echo -n "$(date +"%Y-%m-%d %H:%M:%S") starting backup for vm ${domain} ... " >> ${vmlog} virsh dumpxml --security-info ${domain} > ${vmdir}/${domain}.xml virsh undefine ${domain} >> ${vmlog} virsh blockcopy ${domain} /var/lib/libvirt/images/${domain}.img ${vmdir}/${domain}.img --wait --finish >> ${vmlog} virsh define ${vmdir}/${domain}.xml >> ${vmlog} done This has worked great for us, but all of the sudden (eventually triggered by an update, since of course we do regular security/package updates on this machine) we are having problems. For some virtual machines, it still works perfectly, but for others, virsh tells us that a blockjob is still active and therefore the backup fails. This seems to happen to machines at random. However, when we then try to query the active blockjob, virsh tells us that no blockjob is active. Consider the following log from the shell: root@gfii-host:~# virsh undefine Gitolite error: Failed to undefine domain Gitolite error: Requested operation is not valid: cannot undefine transient domain root@gfii-host:~# virsh blockcopy Gitolite /var/lib/libvirt/images/Gitolite.img /tmp/test-blockcopy-gitolite.img --wait --finish error: block copy still active: disk 'vda' already in active block job root@gfii-host:~# virsh blockjob Gitolite /var/lib/libvirt/images/Gitolite.img No current block job for /var/lib/libvirt/images/Gitolite.img root@gfii-host:~# virsh define /var/local/backup/vms/2016-06-22T013001/Gitolite.xml error: Failed to define domain from /var/local/backup/vms/2016-06-22T013001/Gitolite.xml error: block copy still active: domain has active block job Of course we tried to start/stop the virtual machines, rebooted the whole host multiple times etc., but the problem comes back every night. The machine is a Debian Wheezy machine with current updates. We are using the qemu-kvm package from wheezy-backports to enable blockcopy support. Best regards Markus

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[libvirt-users] virt-sparsify changing the apparent-size of files
by libvirt_users＠skagitattic.com 24 Jun '16

24 Jun '16

Hello, I am curious why when using virt-sparsify the apparent-size of the file gets reduced to the actual file size? Is there a way to get the apparent-size left as the full size? In the man page for virt-sparsify it has a section on "IMPORTANT NOTE ABOUT SPARSE OUTPUT IMAGES" and its output seems to indicate what I would expect where "ls -lh" shows the full apparent size and "du -sh" shows the actual size. But my actual results from testing are different. In the following example input.qcow2 is before sparsify and output.qcow2 is after. Doing ls reports full size for input but a small size for the output: root@testingbox:/tmp/test # ls -lh total 3.1G -rw-r--r-- 1 root root 512M Jun 14 22:30 file.img -rw-r--r-- 1 root root 51G Jun 14 22:30 input.qcow2 -rw-r--r-- 1 root root 790M Jun 14 22:36 output.qcow2 Same when asking du for apparent-size: root@testingbox:/tmp/test # du -h --apparent-size * 512M file.img 51G input.qcow2 790M output.qcow2 A normal du will show the actual size of the files: root@testingbox:/tmp/test # du -h * 0 file.img 2.4G input.qcow2 790M output.qcow2 The only way I have found to check the full virtual size of the file after virt-sparsify is with qemu-img: root@testingbox:/tmp/test # qemu-img info input.qcow2 image: input.qcow2 file format: qcow2 virtual size: 50G (53687091200 bytes) disk size: 2.3G cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: true root@testingbox:/tmp/test # qemu-img info output.qcow2 image: output.qcow2 file format: qcow2 virtual size: 50G (53687091200 bytes) disk size: 789M cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false Thanks!

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[libvirt-users] Problem with guest cpu feature
by Laurent Pouilloux 23 Jun '16

23 Jun '16

Hello libvirt-users, I have an issue with libvirt on Centos 7.2 regarding CPU features seen by the Guest OS. The physical Host is Dell PowerEdge R730 with Haswell CPU, with the following features $ grep "model name" /proc/cpuinfo | tail -1 model name : Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz $ grep flags /proc/cpuinfo | tail -1 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc cqm_occup_llc Regarding libvirt configuration, we have the following features detected : $ virsh capabilities | grep feature <feature name='invtsc'/> <feature name='abm'/> <feature name='pdpe1gb'/> <feature name='rdrand'/> <feature name='f16c'/> <feature name='osxsave'/> <feature name='dca'/> <feature name='pdcm'/> <feature name='xtpr'/> <feature name='tm2'/> <feature name='est'/> <feature name='smx'/> <feature name='vmx'/> <feature name='ds_cpl'/> <feature name='monitor'/> <feature name='dtes64'/> <feature name='pbe'/> <feature name='tm'/> <feature name='ht'/> <feature name='ss'/> <feature name='acpi'/> <feature name='ds'/> <feature name='vme'/> We have created a VM named that is configured with match="exact" $ virsh dumpxml compil | grep -A2 match <cpu mode='custom' match='exact'> <model fallback='allow'>Haswell-noTSX</model> </cpu> However, on the guest side, there no feature such as f16c is detected $ grep flag /proc/cpuinfo | tail -1 flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt Is this normal ? Should we use match="strict" to have the f16c feature seen by the guest OS ? The xml file describing both the host and the guest are in attachment. $ yum info libvirt Modules complémentaires chargés : fastestmirror Loading mirror speeds from cached hostfile Paquets installés Nom : libvirt Architecture : x86_64 Version : 1.2.17 Révision : 13.el7_2.4 Taille : 0.0 Dépôt : installed Depuis le dépôt : updates Résumé : Library providing a simple virtualization API URL : http://libvirt.org/ Licence : LGPLv2+ Description : Libvirt is a C toolkit to interact with the virtualization capabilities : of recent versions of Linux (and other OSes). The main package includes : the libvirtd server exporting the virtualization support. Thanks in advance for any advices we can receive. Best regards, Laurent Pouilloux -- Ingénieur en Calcul Scientifique Laboratoire de Mécanique des Fluides et d'Acoustique École Centrale de Lyon 36 Avenue Guy de Collongue, 69130 Écully Batiment I11 - Bureau 11097W Tél : 04.72.18.61.57

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[libvirt-users] Need information
by Gk Gk 20 Jun '16

20 Jun '16

Hi, I am referring to the 'Routed Mode' section just under the section 'Other virtual network switch routing types' in the URL ' http://wiki.libvirt.org/page/VirtualNetworking#Routed_mode'. In the above link, for routed mode, it is stated that 'In this mode all virtual machines are in a subnet routed through the virtual switch.' Can anyone explain to me, if the guest machines have to be in the same subnet as the Host machine for the routed mode to work (o)r can the guest machines be in any subnet different from the host machine in routed mode ? Thanks Kumar

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[libvirt-users] libvirt can't communicate over network while creating VM
by Mensik, Petr 16 Jun '16

16 Jun '16

Hello guys, we use libvirt for dynamic creation of our VM and we do various modifications of those VMs in the process. One with I am struggling with is to signing keys of our custom repository - " vm.sh("wget -O - " + key_address + " | apt-key add -")" where "vm" is a GuestFS object. So I have set "vm.set_network(True)" and I have installed "dhcpcd5" package (that's whats on Debian Jessie) on both Host OS with KVM running and VM template (because we always copy Debian template we have in order to create new VM). However according to the log libvirt is still complaining that dhcpcd is missing (line 371 in the log). I ran dhcpcd command on both machines and I've even restarted networking service - unfortunately nothing helps. So I'd like to ask you for help or at least any hints. Thanks a lot. http://pastebin.com/d6zZG1BK P.S. I already wrote to the #libvirt channel on IRC but nobody replied so I am trying my luck here :) Best regards Petr Mensík

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[libvirt-users] CPU reservation.
by Dominique Ramaekers 15 Jun '16

15 Jun '16

Hi, I'd like some opinions regarding the configuration of my guest cpu. I had a physical server with a MSSQL on it. The license of the SQL server was of type 1 processor. This means, only one processor will be used by the SQL server. Recently I had virtualised this server on a 2 processor host. Correct me if I'm wrong, but now I can fool the SQL server by configuring one processors with a lot of cores and threats which results in using more than one physical processor. With a trick like this, I'm not running the server according to the license. To be on the safe side license-wise, I would like to configure my guest that it has only one physical processor at disposal and that this processor is reserved especially for this host. So, the other guests can't use that processor. There is the option cpu passtrough, but I think this will give me trouble when I migrate the guest to another host... There are a lot of possibilities configuring the cpu. What would be the best aproche? Thanks in advance. Dominique.

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[libvirt-users] libvirt-clone - Slow image cloning on a Server
by Philip Banh 15 Jun '16

15 Jun '16

Hello there, I have libvirt/kvm installed on a HP DL380 server and it seems to be cloning a template image very slowly, in fact a 50GB image just doesn't gets stuck after 7%. Is there a reason why this might be happening? I've tried the same setup on a desktop and never had this issue. The command and setup is listed below: virt-clone -o template.img -n new-clone -f .../new-clone.img System - 12 cores, 32 GB of memory - Running CentOS 7 - XFS file system using LVM - Libvirt 1.2.17 Thanks, Philip

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[libvirt-users] Host loses network connectivity when starting containers
by Peter Steele 15 Jun '16

15 Jun '16

I have hit a problem running libvirt based containers in a CentOS 7 based host, with the extra wrinkle that my host is an EC2 instance in AWS. Ultimately everything works as advertised, and I can launch instances that host multiple libvirt lxc containers without problems, with one caveat: About one time in ten when the containers are started, the instance loses all network connectivity. This can even happen on instances that host only a single container, so it's not related to the number of containers that are being run. Once this happens, the only way to fix the problem is to reboot the instance and hope that on the reboot, the containers will start successfully this time. In troubleshooting efforts that I've done I've found that the problem does not occur with containers defined with the linuxcontainers.org flavor of lxc. I've also discovered that if I configure my containers to use libvirt's default isolated bridge device virbr0, this loss of network connectivity does not appear to happen when the containers are started. Specifically, I ran a test that repeatedly started/stopped a single container configured with virbr0 and the test ran for a long time without an issue. When I switched the container to use my fully configured bridge device br0, the start/stop test usually hung up within a few iterations. Meaning that my ssh session into the instance would hang and I'd be unable to reconnect to the instance. Unfortunately AWS does not provide an console back door into an instance so troubleshooting has been difficult. I've checked the system logs though after one of these hangs occurs and there are no errors reported anywhere that I can see. I do not see this problem when running on real hardware. I also do not see the problem when running under other virtual environments, including VMware, KVM, and VirtualBox. My guess is that it is a bug in libvirt (since containers defined with the linuxcontainers.org lxc framework do not cause this issue.) There seems to be an AWS component to the problem as well though since I've only seen this happen in EC2 based instances. Is anyone familiar with this problem? Does anyone have any suggestions how I might resolve it? Note that I have tried a recent version of libvirt (1.3.2-1) and it behaves the same as the stock CentOS version of libvirt (1.2.17-13). Peter

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[libvirt-users] Reg. Libvirt packages with ver 1.2.12
by Das Pratik1 14 Jun '16

14 Jun '16

Hi, I am looking for deb packages of libvirt with version 1.2.12. It would be a great help if you can help me here. The following packages are in need : 1. libvirt-daemon-system (1.2.12) 2. libvirt-clients (1.2.12) 3. libvirt-daemon (1.2.12) If this is not the right place to contact, please redirect me to correct mailing group. Any help would be highly appreciated ! Thanks in advance ! Best Regards Pratik Das =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you

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[libvirt-users] RHEL 7.x Guests Unable to Detect Any Storage Disks
by James Stanley 14 Jun '16

14 Jun '16

Greetings, I have been troubleshooting an issue in my RHEL 7.x guests the last few days where I am unable to get any attached storage volumes detected. I've tried various formats (raw, qed, qcow2) as well as some different cache settings but I've not had any luck getting the guests to see the disks. Are you aware of any bugs around this? We've had problems with RHEL 7.x in other virtualization environments mostly due to networking problems, but I've never encountered a situation where storage doesn't show up under /dev or /dev/disk/by-*. For reference, here's an example volume entry in the domain's xml: <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/image-mnt/storage/vol0'/> <target dev='sda' bus='scsi'/> <shareable/> <serial>12536725</serial> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> And here's how the volume is defined: <volume type='file'> <name>vol0</name> <key>/image-mnt/storage/vol0</key> <source> </source> <capacity unit='bytes'>24696061952</capacity> <allocation unit='bytes'>24696066048</allocation> <target> <path>/image-mnt/storage/vol0</path> <format type='raw'/> <permissions> <mode>0600</mode> <owner>187</owner> <group>474</group> </permissions> <timestamps> <atime>1465847232.644199995</atime> <mtime>1465846963.996202455</mtime> <ctime>1465846963.996202455</ctime> </timestamps> </target> </volume> Thanks for your help. Regards, James Stanley

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[libvirt-users] vhba and storage pool creation
by Johan Kragsterman 12 Jun '16

12 Jun '16

Hi! Got a couple of storage questions here. I'm a storage guy, running a new project, and just started with libvirt, but have been using qemu/kvm on other platforms before, as well as oVirt. So, my questions here: I started with creating a vhba, and that went fine, I could see it on the storage side logging in to the target with its wwn. My next step would be to make it persistent, and then its this storage pool creation I've seen. Though some things are not clear to me. This is what the xml file looks like in the documentation: <pool type='scsi'> <name>poolvhba0</name> <source> <adapter type='fc_host' wwnn='20000000c9831b4b' wwpn='10000000c9831b4b'/> </source> <target> <path>/dev/disk/by-path</path> <permissions> <mode>0700</mode> <owner>0</owner> <group>0</group> </permissions> </target> </pool> So there are a few of these things that are unclear to me: * It seems like I should NOT configure a vhba in advance, but this is the process that will configure the vhba for me? * It also seems like the wwnn and wwpn set here are the ones that the vhba will use, not the parent hba? * There is an option of setting the parent here as well, which I will need for some resons, but it is unclear to me whether the wwnn and wwpn's are from the parent or the vhba? Looks like this in documentation: <source> <adapter type='fc_host' parent='scsi_host5' wwnn='20000000c9831b4b' wwpn='10000000c9831b4b'/> </source> * So, are these wwpn and wwnn's from parent or vhba? * Lastly, the path: In the xml file it says /dev/disk/by-path...but I have no path...? Since I have not yet configured the vhba, I can not have a path? I can not map a lun to the vhba before I have a vhba... Or should I create a non persistent vhba, map a lun to it, and then source that path, use the wwpn and wwnn from that vhba in the scsi pool creation??? That would make sense, but also be a bit complicated to use... Best regards from/Med vänliga hälsningar från Johan Kragsterman Capvert

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[libvirt-users] How to use PHP libvirt_connect?
by Phill Edwards 12 Jun '16

12 Jun '16

I'm having a go at writing some PHP scripts to do simple things like view the status of VMs running on my Ubuntu KVM host. I've installed php_libvirt_php but am failing at the first hurdle at the moment as I can't get the PHP script to connect. My normal way of connecting virsh from the command line is like this: $ virsh -c qemu+ssh://localhost/system This asks for a password which is fine as I'm doing it from the command line. I can't get a connection when I use other protocols: $ virsh -c qemu+tcp://192.168.0.103/system error: failed to connect to the hypervisor error: unable to connect to server at '192.168.0.103:16509': Connection refused I've tried using various $uri values for libvirt_connect but I get connection errors: $uri="qemu+tcp://localhost/system"; Connecting to libvirt (URI:qemu+tcp://localhost/system) *Warning*: libvirt_connect(): unable to connect to server at 'localhost:16509': Connection refused in */var/www/html/libvirt_test1.php* on line *8* Libvirt last error: unable to connect to server at 'localhost:16509': Connection refused $uri="qemu://localhost/system"; Connecting to libvirt (URI:qemu://localhost/system) *Warning*: libvirt_connect(): Cannot read CA certificate '/etc/pki/CA/cacert.pem': No such file or directory in */var/www/html/libvirt_test1.php* on line *8* Libvirt last error: Cannot read CA certificate '/etc/pki/CA/cacert.pem': No such file or directory $uri="qemu+tcp://localhost/system"; Connecting to libvirt (URI:qemu+tcp://localhost/system) *Warning*: libvirt_connect(): unable to connect to server at 'localhost:16509': Connection refused in */var/www/html/libvirt_test1.php* on line *8* Libvirt last error: unable to connect to server at 'localhost:16509': Connection refused Presumably the answer is to 1) either allow connections that don't require SSH, or 2) somehow allow a password-less SSH connection from the www-data user that's running the PHP script. 2) sounds like it might be very difficult, and I don't know how to do 1) as I've only ever connected this way with SSH. Can anyone please provide some advise on getting this working.

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[libvirt-users] Prevent guest to host CPU overloads
by Joan Aymà 10 Jun '16

10 Jun '16

Hello, I have a domain on a host that makes it to get on a overload, i.g. host stops responding. The host is a Fedora 22 with follow packages: QEMU emulator version 2.3.0 libvirtd (libvirt) 1.2.13.1 VM is a MS Windows environment... I followed some info on libvirtd wiki but cannot get the idea to limit guest resources into libvirt or get guest limits to enforce host has priority. Must iothread and iops limits be sufficient? I attach some domain info. Thanks in advance.

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[libvirt-users] Java Application on 64bit Windows
by mehmet ayar 09 Jun '16

09 Jun '16

Hi, I am trying to develop a Java application with libvirt 0.5.1. I am trying this on Windows7 64bit. I downladed libvirt-0.5.1.jar and jna.jar files and added them to the Buildpath. Then I installed VirtViewer for windows 64 bit and copied dll files. In my application if i only use System.setProperty("jna.library.path", PATH_TO_DLL); then i see "UnsatisfiedLinkError: Unable to load library 'virt'" error. If i also use System.load(PATH_TO_DLL); then i see "UnsatisfiedLinkError:PATH_TO_DLL: Can't find dependent libraries" I searched everything in internet but couldn't find the same error with dependent libraries. What's missing in my setup? and why just setting jna path won't work for me, as it seems like worked on others. any help will welcome. regards,Memed

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[libvirt-users] Migration command regression as of 1.3.4
by Brian Rak 09 Jun '16

09 Jun '16

Per the documentation, https://libvirt.org/migration.html#scenarionativedirect , 'virsh migrate domain dest interface' was a support command. As of 1.3.4 (when compression support was added), it's not. For example: # virsh migrate test qemu+ssh://10.0.0.1/system tcp://10.0.0.1/ error: invalid argument: Unsupported compression method 'tcp://10.0.0.1/' It seems like the compression code is grabbing the last argument now. Was this intentional? If so, what is the new command format? When will the documentation be updated?

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[libvirt-users] Problem with USB pass through after switching to Xenial from Trusty
by Dale Amon 09 Jun '16

09 Jun '16

I use a virtual machine for a scanner I have for which the vendor never updated their driver. I have accessed it for years using a pass through: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x055f'/> <product id='0x040b'/> </source> </hostdev> I brought this over from the old config and although the machine boots as if it sees it, all I get with an lsusb it that the VM's usb hub exists. The scanner is showing on the host machine. I tried deleting the device and remapping it in virt-manager and then restarting the vm. No joy. So what has changed, or was there something I may have had to do 4 years ago to set this up that I have long forgotten? Perhaps some hack in udev on the host? I really need access to this scanner... like 4 hours ago!

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[libvirt-users] unable to connect with virt-v2v to VMWare
by Cam Mac 08 Jun '16

08 Jun '16

Hi, I am trying to import and convert some VMWare guests from a VMWare cluster with vCenter version 6, to a KVM (oVirt) host. The KVM node (RHEL 7.2) has virt-v2v 1.28.1, though I've also tried using Fedora 23 which has 1.32.4. The details are: vCenter server: nssesxi-mgmt Datacenter name: North Sutton Street esxi server which runs the VM: nssesxi-mgmt04 folder name: Systems VM name: wvm2 cluster name: nssesxi Unfortunately, spaces were put in the name of the datacenter, so I escape them with %20 I authenticate against a AD domain (ARDA) with user 'cam' So the final URI is constructed as: vpx://<DOMAIN\user@<vcenter_server>/<folder>/<datacenter_name>/<esxi_server> <vm_name> The error I get is: # virt-v2v -v -x -ic vpx://ARDA%5ccam@nssesxi-mgmt/Systems/North%20Sutton%20Street/nssesxi04-mgmt?no_verify=1 wvm2 virt-v2v: libguestfs 1.28.1 (x86_64) [ 0.0] Opening the source -i libvirt -ic vpx://ARDA%5ccam@nssesxi-mgmt /Systems/North%20Sutton%20Street/nssesxi04-mgmt?no_verify=1 wvm2 input_libvirt_vcenter_https: source: scheme vpx server nssesxi-mgmt Enter ARDA\cam's password for nssesxi-mgmt: libvirt: ESX Driver error : internal error: Could not find compute resource specified in '/Systems/North Sutton Street/nssesxi04-mgmt' virt-v2v: error: internal error: invalid argument: cannot open libvirt connection 'vpx://ARDA%5ccam@nssesxi-mgmt /Systems/North%20Sutton%20Street/nssesxi04-mgmt?no_verify=1' If reporting bugs, run virt-v2v with debugging enabled and include the complete output: virt-v2v -v -x [...] # # virsh -c 'vpx://ARDA%5ccam@nssesxi-mgmt/Systems/North%20Sutton%20Street/nssesxi04-mgmt?no_verify=1' list --all Enter ARDA\cam's password for nssesxi-mgmt: error: failed to connect to the hypervisor error: internal error: Could not find compute resource specified in '/Systems/North Sutton Street/nssesxi04-mgmt' # I can access via http a list of VMs at the following URL: https://nssesxi-mgmt/folder?dcPath=North%2520Sutton%2520Street&dsName=nsses… Below is the URI to the vm itself (once shutdown, it gets the name 'vm2_1'): https://nssesxi-mgmt/folder/wvm2_1?dcPath=North%2520Sutton%2520Street&dsNam… Any idea why the virsh and virt-v2v stuff doesn't work? Cheers, -Cam

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[libvirt-users] Adding a channel device within an Openstack Fedora Instance ..
by Jean-Pierre Ribeauville 06 Jun '16

06 Jun '16

Hi, I'm trying to add a channel on a Openstack instance via this command : # virsh attach-device instance-00000005 test.xml that returns this error error: Failed to attach device from test.xml error: internal error: no virtio-serial controllers are available # # cat test.xml : <channel type='unix'> <source mode='bind' path='//var/lib/libvirt/qemu/instance-00000005.agent'/> <target type='virtio' name='instance-00000005.agent'/> </channel> #virsh dumpxml instance-00000005 <domain type='kvm' id='8'> <name>instance-00000005</name> <uuid>f85ea8a4-0159-417c-bef5-5b4e908ea2a0</uuid> <metadata> <nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.0"> <nova:package version="12.0.1-1.el7"/> <nova:name>Fedora-Cloud-23-2015-1</nova:name> <nova:creationTime>2016-06-06 08:22:34</nova:creationTime> <nova:flavor name="m1.small"> <nova:memory>2048</nova:memory> <nova:disk>20</nova:disk> <nova:swap>0</nova:swap> <nova:ephemeral>0</nova:ephemeral> <nova:vcpus>1</nova:vcpus> </nova:flavor> <nova:owner> <nova:user uuid="da49c3189eaf40b28893b422b60cc73e">demo</nova:user> <nova:project uuid="ef3ecf8618e24130b2cd8adab8e17310">demo</nova:project> </nova:owner> <nova:root type="image" uuid="a22e881e-dd17-4795-a118-67f9ec90a768"/> </nova:instance> </metadata> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>2097152</currentMemory> <vcpu placement='static'>1</vcpu> <cputune> <shares>1024</shares> </cputune> <resource> <partition>/machine</partition> </resource> <sysinfo type='smbios'> <system> <entry name='manufacturer'>Fedora Project</entry> <entry name='product'>OpenStack Nova</entry> <entry name='version'>12.0.1-1.el7</entry> <entry name='serial'>8cd9a34f-a760-4c53-9420-a3a22a484bb2</entry> <entry name='uuid'>f85ea8a4-0159-417c-bef5-5b4e908ea2a0</entry> <entry name='family'>Virtual Machine</entry> </system> </sysinfo> <os> <type arch='x86_64' machine='pc-i440fx-rhel7.0.0'>hvm</type> <boot dev='hd'/> <smbios mode='sysinfo'/> </os> <features> <acpi/> <apic/> </features> <cpu mode='host-model'> <model fallback='allow'/> <topology sockets='1' cores='1' threads='1'/> </cpu> <clock offset='utc'> <timer name='pit' tickpolicy='delay'/> <timer name='rtc' tickpolicy='catchup'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/nova/instances/f85ea8a4-0159-417c-bef5-5b4e908ea2a0/disk'/> <backingStore type='file' index='1'> <format type='raw'/> <source file='/var/lib/nova/instances/_base/5773dfb9c65f9640334bf9b3101ac8a2f485ee83'/> <backingStore/> </backingStore> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <controller type='usb' index='0'> <alias name='usb'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'> <alias name='pci.0'/> </controller> <interface type='bridge'> <mac address='fa:16:3e:ad:2d:51'/> <source bridge='qbr9ece405a-26'/> <target dev='tap9ece405a-26'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='file'> <source path='/var/lib/nova/instances/f85ea8a4-0159-417c-bef5-5b4e908ea2a0/console.log'/> <target port='0'/> <alias name='serial0'/> </serial> <serial type='pty'> <source path='/dev/pts/4'/> <target port='1'/> <alias name='serial1'/> </serial> <console type='file'> <source path='/var/lib/nova/instances/f85ea8a4-0159-417c-bef5-5b4e908ea2a0/console.log'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='tablet' bus='usb'> <alias name='input0'/> </input> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='5901' autoport='yes' listen='0.0.0.0' keymap='en-us'> <listen type='address' address='0.0.0.0'/> </graphics> <video> <model type='cirrus' vram='16384' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <stats period='10'/> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='selinux' relabel='yes'> <label>system_u:system_r:svirt_t:s0:c699,c952</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c699,c952</imagelabel> </seclabel> </domain> How may I add this controller ( before adding the channel device) ? Thanks for help. Regards, Jean-Pierre RIBEAUVILLE +33 1 4717 2049 [axway_logo_tagline_87px]

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