- Users - libvirt List Archives

[libvirt-users] noVNC with qemu over ssh
by Digimer 22 Oct '15

22 Oct '15

Hi all, I have a little webserver interface for managing VMs running on a RHEL 6 based HA cluster hosting KVM/qemu VMs. I'd like to use noVNC to provide access to the hosted VMs, but I am not finding much information on how to do this (or rather, I can't find it in the large number of ovirt related posts). Has anyone done this or could someone point me in the right direction to docs on how to do this? Trying to even get direct access isn't getting me far (/usr/bin/novnc_server --vnc localhost:5900 -> click URL -> enter password, hangs on "Starting VNC handshake"). Thanks! PS - while testing, iptables and selinux are disabled... I'm trying to get a most basic setup working -- 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] Libvirt from source problem
by Muhammad Asif 21 Oct '15

21 Oct '15

Hi Geeks, When I install libvirt from source, there is no libvirtd. how can i start or restart libvirt deamon. Moreover it give some permission error. What issue can be. Thanks

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[libvirt-users] Libvirt-LXC, container get stuck if it prints too much logs in the console
by Bertrand NOEL 21 Oct '15

21 Oct '15

Hi, I am creating containers using libvirt-lxc. My problem is that a process at bootup gets stuck at some point. My usecase is Puppet, but I can reproduce with a loop in bash. I noticed it is stuck until I connect to the console of the container (virsh -c lxc:/// console id). Then after disconnecting the console, waiting some times, the process gets stuck again. The more the process outputs to the console, the quicker it becomes stuck. To test that behavior, at bootup (in rc.local), in a loop I curl some server that I monitor. In my server logs I can see requests stops after some time. (I tweaked rc.local systemd service to output to console) Host and container are CentOS 7.1 Libvirt v1.2.8 Below is my libvirt.xml <domain type="lxc"> <uuid>9fbe3d43-e1b4-4244-8dab-b42995ab7403</uuid> <name>instance-000002f6</name> <memory>4194304</memory> <vcpu>2</vcpu> <os> <type>exe</type> <cmdline>console=tty0 console=ttyS0</cmdline> <init>/sbin/init</init> </os> <clock offset="utc"/> <devices> <filesystem type="mount"> <source dir="/root/rootfs"/> <target dir="/"/> </filesystem> <interface type="bridge"> <mac address="02:16:3E:00:F6:0E"/> <source bridge="virbr0"/> </interface> <console type="pty"/> </devices> </domain>

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[libvirt-users] "failed to connect to the hypervisor"
by Ken D'Ambrosio 21 Oct '15

21 Oct '15

Hi, all. Ubuntu host, attempting to get virsh working with VirtualBox... and failing. Here's what happens: root@foobox:~# virsh -c vbox:///session list error: failed to connect to the hypervisor error: internal error: unable to initialize VirtualBox driver API ------------------------------------------------------ Now, most of the docs I read about "failed to connect to the hypervisor" have other errors that happen *before* the "failed to connect" one, that are the root cause (e.g., unable to open socket, or bad cert, or whatever). But that's not the case, here. And what puzzles me more is that -- while I don't know what the output *should* look like -- to my eye, strace seems to say that we're getting information back: 1940 read(5, "Node 1 MemTotal: 33011680 kB\nNode 1 MemFree: 32565612 kB\nNode 1 MemUsed: 446068 kB\nNode 1 Active: 57948 kB\nNode 1 Inactive: 77036 kB\nNode 1 Active(anon): 27688 kB\nNode 1 Inactive(anon): 84 kB\nNode 1 Active(file): 30260 kB\nNode 1 Inactive(file): 76952 kB\nNode 1 Unevictable: 52 kB\nNode 1 [...] ------------------------------------------------------ In my googling, I see mention of per-VM XML files that... do something. But what they do, and how they're generated, doesn't seem clear. (E.g., XML mentioned here: http://libvirt.org/drvvbox.html -- it just sort of sits there, with no context.) Is that something I need? Thanks for any enlightenment you might be able to offer me, -Ken

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[libvirt-users] enable aes for guest
by Parvathi 20 Oct '15

20 Oct '15

Hi, How do I enable aes for guest VM? Host CPU supports aes (cat /proc/cpuinfo has aes in its flags and virsh capabilities also displays aes as a feature). When I add <features> <aes/> </features> to the xml file, I am unable to create the VM. It complains with the below error: virsh create /tmp/tmp.xml error: Failed to create domain from /tmp/tmp.xml error: internal error: unexpected feature aes Best!

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[libvirt-users] selective virsh host permissions
by Jamie Fargen 20 Oct '15

20 Oct '15

As a Systems Administrator, I would like to grant permissions to a certain VM using unix groups. In this example there is a hypervisor with VMs A,B,C,D and there is a group called fortadmins. The solution I am searching forI would just allow fortadmins to use libvirt/virsh commands on VM D. Does libvirt/virsh provide any way to easily accomplish this goal? Regards, Jamie Ian Fargen

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[libvirt-users] virsh blockcopy without undefine
by Nathan Shearer 14 Oct '15

14 Oct '15

I have a script that performs a backup with the following steps: virsh dumpxml --inactive "$DOMAIN" > "$TMP/${DOMAIN}.xml" && \ virsh dumpxml --inactive "$DOMAIN" > "$DESTINATION_XML" && \ virsh undefine "$DOMAIN" && \ virsh blockcopy "$DOMAIN" "$SOURCE_DISK" "$DESTINATION_DISK" --wait --verbose --finish && \ virsh define "$TMP/${DOMAIN}.xml" It's basic and did work for creating basic backups. Is there a way to do this without undefining the domain? I recently had to redefine the VM from a backup XML because this script failed during the block copy step. Why can't I blockcopy a domain that is defined? Why does it need to be undefined first?

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[libvirt-users] virsh can't support VM offline blockcommit
by 陈明 13 Oct '15

13 Oct '15

Hi everyone! I use the libvirt(version: 1.2.2) and QEMU(version: 2.2.1) to test qemu snapshot features: I tried virsh blockcommit when VM offline, the virsh blockcommit failed: the error messase as below: * error: Requested operation is not valid: domain is not running* when I start the VM, the virsh blockcommit work fine! my question is : we need virsh support blockcommit when VM offline。how do？ we test qemu snapshot as follows： we need create snapshot of the cycle，and by virsh blockcommit merge snapshot chain，but whenVM offline， the virsh blockcommit will fail， someone suggest me：when VM offline，may use qemu-img commit to submit snapshot turn，but qemu-img can't modify snapshot chain backing relation，it need we use qemu-img rebase amend snapshot‘s backingfile，* the main question* is when we use qemu-img rebase modify snapshot's backingfile, if someone start the VM, it will may lead to VM filesystem readonly。 we should how to solve the question? thanks!

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[libvirt-users] Creating external snapshots.
by Dominique Ramaekers 12 Oct '15

12 Oct '15

Hi, I'm trying to create an external snapshot for backup purposes. Only I get an error after the command: virsh snapshot-create-as --domain PCVIRT1 PCVIRT1-SN1 --diskspec vda,file=/var/lib/libvirt/images/VIRT1-SN1.qcow2 --disk-only --atomic --quiesce fout: internal error: kan AppArmor profiel 'libvirt-2c9c04d7-f86d-df12-da9f-9847ac8b994f' niet vernieuwen (Sorry about the dutch... it means: error: internal error: can not renew AppArmor profile 'libvirt-....') I can't find anything about this error... Anybody got an idea how to resolve this problem? Greetings, Dominique.

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[libvirt-users] virsh can't support VM offline blockcommit
by 陈明 12 Oct '15

12 Oct '15

Hi everyone! I use the libvirt(version: 1.2.2) and QEMU(version: 2.2.1) to test qemu snapshot features: I tried virsh blockcommit when VM offline, the virsh blockcommit failed: the error messase as below: * error: Requested operation is not valid: domain is not running* when I start the VM, the virsh blockcommit work fine! my question is : we need virsh support blockcommit when VM offline。how do？ we test qemu snapshot as follows： we need create snapshot of the cycle，and by virsh blockcommit merge snapshot chain，but whenVM offline， the virsh blockcommit will fail， someone suggest me：when VM offline，may use qemu-img commit to submit snapshot turn，but qemu-img can't modify snapshot chain backing relation，it need we use qemu-img rebase amend snapshot‘s backingfile，* the main question* is when we use qemu-img rebase modify snapshot's backingfile, if someone start the VM, it will may lead to VM filesystem readonly。 we should how to solve the question? thanks!

1 0