November 2015 - Users - libvirt List Archives

[libvirt-users] ceph rbd pool and libvirt manageability (virt-install)
by Jelle de Jong 28 Aug '18

28 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] Libvirt bite sized tasks
by Michal Privoznik 20 Mar '16

20 Mar '16

Dear lists, I've just started new wiki page which aim is to summarize small and trivial tasks, that starting contributors can take, investigate and implement. The aim is to give them something easy to start with while not scaring them out about complexity of our code. The page can be found here: http://wiki.libvirt.org/page/BiteSizedTasks The name is copied from qemu wiki: http://wiki.qemu.org/BiteSizedTasks Please, feel free to extend the list. I plan to use it in the future when interviewing GSoC candidates. Michal

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[libvirt-users] unable to dissect libvirt rpc packets using wireshark plugin
by gowrishankar 20 Jan '16

20 Jan '16

Hi, I am trying libvirt plugin in wireshark to dissect RPC payload in TCP, but finding dissector code not really working. My env is Fedora core 21 (x86_64) and installed packages are as follow: wireshark-1.12.6-1.fc21.x86_64 libvirt-wireshark-1.2.9.3-2.fc21.x86_64 Earlier, just after installation, I noticed libvirt.so available only in /usr/lib64/wireshark/plugins/1.12.5/ . Wireshark could not load libvirt plugin. So, I copied above .so into 1.12.6/ under same plugins folder, following it wireshark could list libvirt as supported protocol. tshark -G protocols | grep libvirt Libvirt libvirt libvirt However, on checking with some pcaps which has libvirt RPC calls captured on wire, wireshark does not list libvirt RPC packets, as I search for "libvirt" protocol in pcap. Have anyone experienced this before or if you have any pointer that I could check in my env, that would be very helpful. -- Regards, Gowrishankar M

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[libvirt-users] Questions about qcow2 file size management
by Jérôme 17 Dec '15

17 Dec '15

Hi all. I have a few questions regarding the qcow2 format. 1/ Allocated size vs. file size When creating a VM, I indicated a size of 10 G. $ls -lsh 7,7G -rw------- 1 libvirt-qemu libvirt-qemu 11G oct. 14 10:04 prod.qcow2 The allocated size is lesser than max size. Alright. I think I more or less grab the difference between allocated size and file size, but I'm not sure I get the point of the auto-grow feature of qcow2. Can someone confirm that if I have, say, a 60Go partition, I can create more than six 10Go VM, as long as each don't actually use the full 10 Go? Sort of like flying companies selling more tickets than seats in the plane assuming a few people won't come. In other words, can I have this on a 60Go drive? total 53G 7,4G -rw------- 1 root root 11G oct. 8 06:34 prod_151008.qcow2 7,4G -rw------- 1 root root 11G oct. 9 06:37 prod_151009.qcow2 7,5G -rw------- 1 root root 11G oct. 10 06:41 prod_151010.qcow2 7,5G -rw------- 2 root root 11G oct. 11 06:49 prod_151011.qcow2 7,5G -rw------- 1 root root 11G oct. 12 06:44 prod_151012.qcow2 7,5G -rw------- 1 root root 11G oct. 13 06:27 prod_151013.qcow2 7,7G -rw------- 1 root root 11G oct. 14 06:55 prod_151014.qcow2 (Total allocated is 53 < 60 but sum of 11G sizes is 77 G.) If so, then I guess I get the point. 2/ Backup size Is there a simple way to do backups that only take the actual allocated space (7,7 G in my example) instead of the max (10 G)? I'm using snapshots and blockcommits to backup a VM, thanks to help on this list. The scripts are on GitHub for anyone interested [1]. Basically, what the script does is snapshot then cp as local backup file. Then rsync to another backup partition. Both source and destination partitions are ext4. Source dir (where I cp the snapshots): # ls -lsh vmbackup/daily/ total 53G 7,4G -rw------- 1 root root 11G oct. 8 06:34 prod_151008.qcow2 7,4G -rw------- 1 root root 11G oct. 9 06:37 prod_151009.qcow2 7,5G -rw------- 1 root root 11G oct. 10 06:41 prod_151010.qcow2 7,5G -rw------- 2 root root 11G oct. 11 06:49 prod_151011.qcow2 7,5G -rw------- 1 root root 11G oct. 12 06:44 prod_151012.qcow2 7,5G -rw------- 1 root root 11G oct. 13 06:27 prod_151013.qcow2 7,7G -rw------- 1 root root 11G oct. 14 06:55 prod_151014.qcow2 Destination (where rsync copies the files): # ls -lsh /mnt/usb_hd/vm/vmbackup/daily/ total 71G 11G -rw------- 1 root root 11G oct. 8 06:34 prod_151008.qcow2 11G -rw------- 1 root root 11G oct. 9 06:37 prod_151009.qcow2 11G -rw------- 1 root root 11G oct. 10 06:41 prod_151010.qcow2 11G -rw------- 2 root root 11G oct. 11 06:49 prod_151011.qcow2 11G -rw------- 1 root root 11G oct. 12 06:44 prod_151012.qcow2 11G -rw------- 1 root root 11G oct. 13 06:27 prod_151013.qcow2 11G -rw------- 1 root root 11G oct. 14 06:55 prod_151014.qcow2 Allocated size is as big as file size. This kind of beats the point of having qcow2 grow as needed. Ideally, I would like to create VM with a huge max file size, but only backup the actually used space. How may I achieve this? I just tested qemu-img convert -O qcow2 prod_151008.qcow2 prod_151008_resize.qcow2 and I get 7,2G -rw-r--r-- 1 root root 7,2G oct. 14 10:51 prod_151008_resize.qcow2 Seems to work. I could do this before rsyncing. Is this the recommanded way? Is there a higher level libvirt command to use instead of qemu-img? 3/ Playing with allocated space My VM apparently has an allocated size of 7.7 G 7,7G -rw------- 1 libvirt-qemu libvirt-qemu 11G oct. 14 10:04 prod.qcow2 However, loging into it shows much less than 7.7 G is used: $df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 9.8G 2.0G 7.3G 22% / udev 10M 0 10M 0% /dev tmpfs 2.0G 17M 2.0G 1% /run tmpfs 4.9G 4.0K 4.9G 1% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 4.9G 0 4.9G 0% /sys/fs/cgroup tmpfs 1003M 0 1003M 0% /run/user/1000 I understand once qcow2 has grown to a given allocated size, it won't de-allocate space automatically (auto-allocation is one way only). Perhaps I ended up loading 7Go of files, then those were deleted and now only 2Go are used but the file still has 7G allocated. Could be, but I don't see when this might have happened. Could there be another explanation? Say I want to minimize allocated space because it is a pity to use 2 Go and keep 7 Go backups (I know disk space is cheap, this is just an example), how may I shrink allocated space to currently used space? I'm not talking about shrinking the file, just minimizing the allocated size to keep small backups as per former paragraph, still keeping max file size big to let the VM grow further when needed. In other words, I'm aiming at 2,7G -rw------- 1 libvirt-qemu libvirt-qemu 11G oct. 14 10:04 prod.qcow2 not at 2,7G -rw------- 1 libvirt-qemu libvirt-qemu 2,7G oct. 14 10:04 prod.qcow2 The guest is a Linux, BTW. 4/ Playing with qcow2 file sizes Say I've got this file 7,7G -rw------- 1 libvirt-qemu libvirt-qemu 11G oct. 14 10:04 prod.qcow2 I'd like to make it bigger, like 7,7G -rw------- 1 libvirt-qemu libvirt-qemu 100G oct. 14 10:04 prod.qcow2 AFAIU, the steps would be - power off the VM - expand the qcow2 file size - from the host, extend the volume - power on the VM - from the guest, extend the filesystem I've seen various post on the internet but I'm a bit confused and some posts may be to old to consider new libvirt/qemu possibilities, so I'd appreciate a safe pointer. (I'm also interested in reducing file size.) Thanks for any hint. [1] https://github.com/Jerome-github/vmbackup -- Jérôme

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[libvirt-users] "Failed to start domain..."
by Ken D'Ambrosio 01 Dec '15

01 Dec '15

Sadly, I'm back with another issue. I can do a "system list --all" just fine; however, if I attempt to start the machines, I get back: maas@Bill-MAAS-cc:~$ strace -s 1024 -f -o /tmp/asdfasdf.log virsh -c vbox+ssh://gbadmin@10.20.0.1/system start PXE-client-07 error: Failed to start domain PXE-client-07 error: An error occurred, but the cause is unknown Log files on both client and server are pretty sparse on details of any sort... as, again, is Google. Any ideas? Thanks yet again, -Ken

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[libvirt-users] enabling virtio-scsi-data-plane in libvirt
by Vasiliy Tolstov 30 Nov '15

30 Nov '15

Can somebody knows how to enable virtio-scsi-data-plane in libvirt for specific domain? I know that i need to replace "-device virtio-scsi-pci" with "-object iothread,id=io1 -device virtio-scsi-pci,iothread=io1" in qemu, but how can i do this in libvirt? -- Vasiliy Tolstov, e-mail: v.tolstov(a)selfip.ru

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[libvirt-users] How to disable kvm_steal_time feature
by Piotr Rybicki 30 Nov '15

30 Nov '15

Hi. I would like to workaround a bug, when after live-migration of KVM guest, there is a 100% steal time shown in guest. I've read, that disabling 'kvm_steal_time' feature should workarund this bug, but i can't find a way to disable it in libvirt's domain xml file. Tried in <cpu> section: <feature policy='disable' name='kvm_steal_time'/> but that doesn't work. Also, couldn't find any related information in libvirt documentation. Google helps neither. How can I disable this feature? Thanks in advance. Piotr Rybicki

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[libvirt-users] virsh uses internally qemu-img ?
by Lentes, Bernd 30 Nov '15

30 Nov '15

Hi, i read that virsh uses internally qemu-img (http://serverfault.com/questions/692435/qemu-img-snapshot-on-live-vm) Is that true ? so snapshotting a running vm with virsh or qemu-img is the same ? 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. Nikolaus Blum, Dr. Alfons Enhsen Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671

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[libvirt-users] libvirtd doesn't attach Sheepdog storage VDI disk correctly
by Adolf Augustin 30 Nov '15

30 Nov '15

Hi, I am trying to use libvirt with sheepdog. I am using Debian 8 stable with libvirt V1.21.0 I am encountering a Problem which already has been reported. ================================================================= See here: http://www.spinics.net/lists/virt-tools/msg08363.html ================================================================= qemu/libvirtd is not setting the path Variable correctly. Every time I convert an image to sheepdog ============================================= qemu-img convert /home/user/temp/debian-8.2.0-amd64-CD-1.iso sheepdog:debian.iso ============================================ the dump of the image says ============================================= virsh # vol-dumpxml --pool herd debian.iso <volume type='network'> <name>debian.iso</name> <key>herd/debian.iso</key> <source> </source> <capacity unit='bytes'>657457152</capacity> <allocation unit='bytes'>658505728</allocation> <target> <path>debian.iso</path> <format type='unknown'/> </target> </volume> ============================================== It should read =============================================== ... <path>sheepdog:debian.iso</path> ... =============================================== I ungraded the system to Debain testing now running: ================================================ virsh # version Compiled against library: libvirt 1.2.21 Using library: libvirt 1.2.21 Using API: QEMU 1.2.21 Running hypervisor: QEMU 2.4.0 ================================================ The Problem ist still existent. It should have been solved in libvirt 1.2.17 See here: https://libvirt.org/news.html ===================================================== .... update sheepdog client] update sheepdog client path (Vasiliy Tolstov), ..... ===================================================== Nevertheless it doesn't work in Debian 8 testing (libvirt 1.2.21). -- Best regards Adolf Augustin E-mail: adolf.augustin(a)zettamail.de PGP-Key: 0xC4709AFE Fingerprint: 1806 35FA CAE8 0202 B7AF 12B9 5956 5BC0 C470 9AFE

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[libvirt-users] New vs old API usages
by Shahar Havivi 29 Nov '15

29 Nov '15

Hi, Currently I am using the latest libvirt API listAllDomains() to probe for domains. I may need to fall back to older API for old libvirt server such as: listDefinedDomains() and lookupByName() instead of listAllDomains(). Is there any disadvantage to using listAllDomains instead of listAllDomains or its the same results via different API? Thank you, Shahar.

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[libvirt-users] Spice and client usb-redirection
by Dominique Ramaekers 27 Nov '15

27 Nov '15

Hi, Is there anybody who got the usb-redirection working with remote-viewer on Windows? If I install remote-viewer, the option to redirect usb devices is grayed out in the menu. Greetings, Dominique.

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[libvirt-users] SOLVED: failed to connect to the hypervisor
by Ken D'Ambrosio 25 Nov '15

25 Nov '15

Ubuntu, for the loss. Turned out to be an apparmor issue; as I hadn't touched the profiles, it must've been something else going on. -Ken ------------------------- original issue ---------------------------- When I try, I get this: root@kilo-VirtualBoxHost:~# virsh -c vbox:///session error: failed to connect to the hypervisor error: internal error: nsIEventQueue object is null ---------------------------------- The part that puzzles me is that it *used* to work, but no longer. "virsh -V" shows me running libvirt 1.2.2, with VirtualBox enabled. I'm running stock Ubuntu VirtualBox v. 4.3.10. I've rebooted; I've tried running it as different users. Googling comes up with some five-year-old Solaris patch discussions. My /var/log/libvirt/libvirtd.log shows stuff like this: 2015-11-25 02:21:39.381+0000: 3893: error : virNetSocketReadWire:1454 : End of file while reading data: Input/output error 2015-11-25 02:26:38.953+0000: 3897: error : vboxInitialize:932 : internal error: nsIEventQueue object is null 2015-11-25 02:26:38.954+0000: 3893: error : virNetSocketReadWire:1454 : End of file while reading data: Input/output error Any pointers would be greatly appreciated. Thanks! -Ken

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[libvirt-users] XenServer Support
by Martin Juhl 25 Nov '15

25 Nov '15

Hi I'm trying to get libvirt/virsh to work with Citrix XenServer... I have recompiled libvirt from RHEL7 (1.2.8+patches) with xenapi support.. and it seems to be working: [root@dantooine etc]# virsh --debug=4 -c xenapi://192.168.60.82/?no_verify=1 Enter username for 192.168.60.82: root Enter root's password for 192.168.60.82: Velkommen til virsh, den interaktive terminal for virtualisering. Skriv: 'help' for hjælp med kommandoer 'quit' for at afslutte virsh # list Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Struct did not contain expected field hardware_platform_version. Id Navn Tilstand ---------------------------------------------------- 0 Control domain on host: endor2.outerrim.lan kører 3 CloudCity kører 5 R2D2 kører 6 Naboo kører 7 Jarjar kører 8 Dantooine_NY kører 9 Deathstar kører 10 Vader kører 11 Bespin kører 12 Kessel kører Now I want to be able to auto-login (to do scripting and Satellite 6)... But I can't get it to work... My /etc/libvirt/auth.conf: [root@dantooine etc]# cat /etc/libvirt/auth.conf [credentials-endor] authname=root password=<password> [auth-libvirt-192.168.60.82] credentials=endor I have also tried with "xen" and "xenapi" instead of libvirt... But I am still prompted for a user and password.... [root@dantooine etc]# virsh --debug=4 -c xenapi://192.168.60.82/?no_verify=1 Enter username for 192.168.60.82: Can someone help me out here??? Thanks /Martin

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[libvirt-users] failed to connect to the hypervisor
by Ken D'Ambrosio 25 Nov '15

25 Nov '15

When I try, I get this: root@kilo-VirtualBoxHost:~# virsh -c vbox:///session error: failed to connect to the hypervisor error: internal error: nsIEventQueue object is null ---------------------------------- The part that puzzles me is that it *used* to work, but no longer. "virsh -V" shows me running libvirt 1.2.2, with VirtualBox enabled. I'm running stock Ubuntu VirtualBox v. 4.3.10. I've rebooted; I've tried running it as different users. Googling comes up with some five-year-old Solaris patch discussions. My /var/log/libvirt/libvirtd.log shows stuff like this: 2015-11-25 02:21:39.381+0000: 3893: error : virNetSocketReadWire:1454 : End of file while reading data: Input/output error 2015-11-25 02:26:38.953+0000: 3897: error : vboxInitialize:932 : internal error: nsIEventQueue object is null 2015-11-25 02:26:38.954+0000: 3893: error : virNetSocketReadWire:1454 : End of file while reading data: Input/output error Any pointers would be greatly appreciated. Thanks! -Ken

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[libvirt-users] esx/vcenter: create a domain inside an folder
by Cyrill von Wattenwyl 23 Nov '15

23 Nov '15

Hello at all Im trying to create a domain inside a folder: Host: foo.tld Datacenter: dc1 Cluster: cluster name1 Host: esx.tld Folder: folder/subfolder (inside Cluster bar.tld) URL: vpx://foo.tld/dc1/cluster%20name1/folder/subfolder/esx.tld I tried nearly every combination since the documentation is not 100% clear about that, but libvirt allways creates the domains inside vpx://foo.tld/dc1/ and not goes "deeper". My questions: - Is it even possible to create domains inside of a folder inside a cluster? If yes, how? - Could the whitespace in cluster name be a problem? - The user im trying to create the vms does not have permissions to view/change things on level datacenter/cluster/main folder. it can only view things in the subfolder. Could this be the issue? Thanks for your time and best regards, Cyrill

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[libvirt-users] removing PS/2 keyboard
by Tadas 23 Nov '15

23 Nov '15

Hello lists, I wonder, is there a way to remove a PS/2 keyboard from a guest and leave it only with USB bus one? Problem is that if i edit guest (via virsh edit) and change keyboard bus from ps2 to usb, I end up with two keyboards: ps2 and usb one. --

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[libvirt-users] libvirt prepare and start hooks not callled
by Sundar Nadathur 20 Nov '15

20 Nov '15

Hello, I am using RHEL 7.1 and libvirt 1.2.8. My intention is to intercept the prepare and start hooks of libvirt during VM placement to inject a virtio PCI device into the VM's domain xml. I placed a python script with execute permissions in /etc/libvirt/hooks/qemu. In there, I opened a log file to record the arguments received: log.write("avfd called with args: %s\n" % sys.argv) But all I get in the log file is: avfd called with args: ['/etc/libvirt/hooks/qemu', 'vm1', 'started', 'begin', '-'] There are no prepare or start calls. Can somebody explain what it takes to fix this? Cheers, Sundar ________________________________ Confidentiality Notice. This message may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient, you are hereby notified that any use, disclosure, dissemination, distribution, or copying of this message, or any attachments, is strictly prohibited. If you have received this message in error, please advise the sender by reply e-mail, and delete the message and any attachments. Thank you.

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[libvirt-users] ANNOUNCE: ruby-libvirt 0.6.0
by Chris Lalancette 20 Nov '15

20 Nov '15

All, I'm pleased to release ruby-libvirt 0.6.0. ruby-libvirt is a ruby wrapper around the libvirt API. The changelog between 0.5.2 and 0.6.0 is: * Fix possible buffer overflow * Fix storage volume creation error messages * Add additional storage pool defines * Implement Network dhcp_leases method * Implement Connect node_alloc_pages method * Implement Domain time method * Implement Connect domain_capabilities method * Implement Domain core_dump_with_format method * Implement Domain fs_freeze method * Implement Domain fs_info method * Implement Connect node_free_pages method Version 0.6.0 is available from http://libvirt.org/ruby: Tarball: http://libvirt.org/ruby/download/ruby-libvirt-0.5.2.tgz Gem: http://libvirt.org/ruby/download/ruby-libvirt-0.5.2.gem It is also available from rubygems.org; to get the latest version, run: $ gem install ruby-libvirt Packages for it are also built for Fedora, and will be released shortly. As usual, if you run into questions, problems, or bugs, please feel free to mail me (clalancette gmail com) and the libvirt mailing list. Thanks to those who contributed to this release.

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[libvirt-users] Can't take live snapshot, not supported with this QEMU binary
by Tashi Lu 20 Nov '15

20 Nov '15

Hi all, I was trying to take live snapshot of VMs, but I got the following error: [root@localhost ~]# virsh snapshot-create-as 1 test desc --live --memspec file=mem.bak,snapshot=external --diskspec vda,snapshot=external,file=/root/root.bak.qcow2 error: Operation not supported: live disk snapshot not supported with this QEMU binary I upgraded my qemu-kvm 0.12.1 to qemu 1.2, the error still exists. Is this really the problem of my qemu version or I did something wrong? To what version should I upgrade? Thanks. virsh version: Compiled against library: libvirt 0.10.2 Using library: libvirt 0.10.2 Using API: QEMU 0.10.2 Running hypervisor: QEMU 0.12.1 uname -r: 2.6.32-504.el6.x86_64

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[libvirt-users] signal for shutdown in lxc driver
by Boris Savelev 20 Nov '15

20 Nov '15

Hello! Try to use libvirt with lxc. I use latest centos6 amd64 as a libvirt host (libvirt from xen4 repo) libvirt-daemon-1.2.15-3.el6.x86_64 In container I also use latest centos6 amd64. Container starts with /sbin/init. CentOS 6 came with upstart as default init. My problem is that I could not shutdown container correctly with libvirt. virsh -c lxc:/// shutdown test Domain test is being shutdown In container I see only: "init: Re-executing /sbin/init" in syslog messages Why it is happened? lxcDomainShutdownFlags [1] send SIGTERM to initpid. Upstart got it and reloaded himself instead shutdown. It's default behavior... [2] The question is why libvirt send SIGTERM? As I can see lxc-stop [3] send SIGPWR (that works correctly with upstart) and also have ability to change default signals. I can understand that when container start with some script not /sbin/init that handle SIGTERM this situation is ok. But then container use /sbin/init it is not. So, is this a bug?-) [1] https://github.com/libvirt/libvirt/blob/master/src/lxc/lxc_driver.c#L3681 [2] https://bazaar.launchpad.net/~upstart-devel/upstart/trunk/view/head:/init/m… [3] http://man7.org/linux/man-pages/man1/lxc-stop.1.html -- Boris

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[libvirt-users] Issues with libvirt virtual networking
by Joshua Atkinson 19 Nov '15

19 Nov '15

Hello all, I am having issues getting my virtual network to work correctly. As of current, I have set up a virtual network with virt-manager, using the routed mode to forward network traffic. I have found guests can see/ping themselves, the host's virtual IP and the host's real IP, but nothing else. Guests fail to see any other device on the real network or the internet. My host is Arch Linux on Linux 4.2.5-1 with the VFIO kernel, and runs a QEMU/KVM hypervisor. My main guest runs a new install of Windows 10, with the virtio network interface. I have only one virtual network configured, and no network interfaces configured in virt-manager. Does anyone know why my VMs cannot see anything other than themselves and the host? My iptables rules (entirely set by libvirt): Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:bootps ACCEPT tcp -- anywhere anywhere tcp dpt:bootps Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.100.0/24 ACCEPT all -- 192.168.100.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp dpt:bootpc Output of "brctl show" bridge name bridge id STP enabled interfaces virbr0 8000.52540012f3ab yes virbr0-nic Output of "ip addr": 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp5s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 90:2b:34:68:84:c0 brd ff:ff:ff:ff:ff:ff inet 192.168.1.8/24 brd 192.168.1.255 scope global enp5s0 valid_lft forever preferred_lft forever inet6 fe80::922b:34ff:fe68:84c0/64 scope link valid_lft forever preferred_lft forever 3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default link/ether 52:54:00:12:f3:ab brd ff:ff:ff:ff:ff:ff inet 192.168.100.1/24 brd 192.168.100.255 scope global virbr0 valid_lft forever preferred_lft forever 4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 500 link/ether 52:54:00:12:f3:ab brd ff:ff:ff:ff:ff:ff Many Thanks, Josh

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[libvirt-users] Vm not booting up after manual migration
by Sakhi Hadebe 19 Nov '15

19 Nov '15

Hi, I have two hosts installed with libvirt. We have just installed a latest version of libvirt on one of the hosts, version Compiled against library: libvirt 1.2.16 Using library: libvirt 1.2.16 Using API: QEMU 1.2.16 Running hypervisor: QEMU 2.3.0 The host hosting all our virtual machines runs an older version Compiled against library: libvirt 1.2.2 Using library: libvirt 1.2.2 Using API: QEMU 1.2.2 Running hypervisor: QEMU 2.0.0 I am now trying to manually migrate virtual machines to the host with the newest version of libvirt. I have copied the qcow2, img, and xml files of all the virtual machines to this host. The problem I am encounting is that the newer version uses "Host device eno1:macvtap" network source for its virtual interface, whisch is not the same as "Host device vnet18 (Bridge "br0")" in the older version. Not sure if this is something \i have to worry about. I have manuall copied all the files across, but when booting up the vm on the newset version ost it hangs up before booting (see screenshot attached). Please help me to fully boot up into this virtual machine. -- Regards, Sakhi Hadebe Engineer: South African National Research Network (SANReN)Competency Area, Meraka, CSIR Tel: +27 12 841 2308 <+27128414213> Fax: +27 12 841 4223 <+27128414223> Cell: +27 71 331 9622 <+27823034657> Email: sakhi(a)sanren.ac.za <shadebe(a)csir.co.za>

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[libvirt-users] blockcopy pauses vm
by Fırat KÜÇÜK 19 Nov '15

19 Nov '15

Hello, I want to live migrate qcow disk image. virsh snapshot-create-as --domain my-vm migration-snapshot \ --diskspec vda,file=/opt/n0-n1/my-vm-snapshot.img \ --disk-only --atomic --no-metadata virsh undefine my-vm virsh blockcopy --domain my-vm vda \ /opt/n0-n1/my-vm.img \ --wait --verbose --timeout 3600 I check the copy status with "virsh blockjob my-vm vda". After %92 VM pauses and I cannot resume it.

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[libvirt-users] regard limiting network bandwidth
by asw Anose 19 Nov '15

19 Nov '15

hi all i am a kvm , qemu user newbie , i am using libvirt and virsh to mange my KVM VMs , i want to limit the network bandwidth of each VM , i come across libvirt xml format option : <forward mode='nat' dev='eth0'/> <bandwidth> <inbound average='1000' peak='5000' burst='5120'/> <outbound average='128' peak='256' burst='256'/> </bandwidth>to limit the bandwidth of each vm , however i have a question how does these option applied limit on kvm vm ? through using of linux cgroub or its a qemu network bandwidth limit functionality ?

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