December 2013 - Users - libvirt List Archives

[libvirt-users] some problem with snapshot by libvirt
by xingxing gao 22 Nov '14

22 Nov '14

Hi,all,i am using libvirt to manage my vm,in these days i am testing the libvirt snapshot ,but meet some problem: the snapshot was created from this command: snapshot-create-as win7 --disk-only --diskspec vda,snapshot=external --diskspec hda,snapshot=no but when i tried to revert from the snapshot which created from the above command ,i got error below: virsh # snapshot-revert win7 1338041515 --force error: unsupported configuration: revert to external disk snapshot not supported yet version: virsh # version Compiled against library: libvir 0.9.4 Using library: libvir 0.9.4 Using API: QEMU 0.9.4 Running hypervisor: QEMU 1.0.93

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[libvirt-users] Using Java bindings to event callback
by Howie 23 Jan '14

23 Jan '14

Hi My test environment : CentOS 6.3 6.4 Ubuntu 13.10 For CentOS 6.4 libvirt-java-0.4.9-1.el6.noarch libvirt-python-0.10.2-29.el6.x86_64 libvirt-client-0.10.2-29.el6.x86_64 libvirt-0.10.2-29.el6.x86_64 I am try to use java bindings to event callback. int register = conn.domainEventRegisterAny(null, 0, cb); But always get the following error message: libvirt: Remote Driver error : adding cb to list exception caught:org.libvirt.LibvirtException: adding cb to list level:VIR_ERR_ERROR code:VIR_ERR_RPC domain:VIR_FROM_REMOTE hasConn:false hasDom:false hasNet:false message:adding cb to list str1:%s str2:adding cb to list str3:null int1:-1 int2:-1 By the way I also trace the mail list *[libvirt] [PATCH] Java bindings for domain events* (2008 Nov 07) *[libvirt] [PATCH 1/2] Java bindings for domain events**[libvirt] [PATCH 2/2] Java bindings for domain events* (2008 Nov 18) --> Reject patch*Re: [libvirt] [PATCH 1/2] Java bindings for domain events* (2008 Dec) —>No Result*[libvirt-users] Using Java bindings to event callback * (2010 Jul) —>No Result *[libvirt] [PATCH 0/2] Libvirt-java event handling (2011Jul)* —> I think most drivers don't support that. We have a custom driver for our hypervisor and it works. *[libvirt] [libvirt-java] [PATCH 00/12] event support* (2013 Jan) —> *Re: [libvirt] [libvirt-java] [PATCH 00/12] event support (2013 Mar)* --> No Result Any suggestions? Thanks, Howie

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[libvirt-users] Fake Network Interface
by Andrew Martin 16 Jan '14

16 Jan '14

Hello, Is there a supported method for creating a fake network interface in a VM's configuration file? I was using the below construct, however it is no longer working for me in recent versions of libvirt (libvirt 1.0.2 with qemu-kvm 1.4.0). Is there a different, preferred method for creating a fake virtual interface on the guest which does not exist on the host? <interface type='network'> <mac address='aa:aa:aa:aa:aa:aa'/> <source network='fake'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> Thanks, Andrew

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[libvirt-users] --persistent/--config confusion
by Dennis Jacobfeuerborn 15 Jan '14

15 Jan '14

Hi, I'm wondering how to attach a network device properly to a domain. According to the man page without "--config" a device created with "attach-device" will be added to the domain yet with "--config" it will only be added to the config and only be available after a restart of the guest. Is there no way to attach the device immediately *and* also make that change persistent? Regards, Dennis

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[libvirt-users] Connect libvirt to iSCSI target
by Marco 31 Dec '13

31 Dec '13

Hi! I'm new to libvirt and face problems connecting to an iSCSI target. What I intend to do is to connect libvirt (I tried virt-manager and virsh) to an iSCSI target and then boot from the LUNs which contain the VMs. I followed the documentation¹ but got stuck at section 12.1.5.4.3. 1) virsh pool-define-as \ --name foo \ --type iscsi \ --source-host vmhost \ --source-dev iqn.2013-11.vmhost:vmpool \ --target /dev/disk/by-path 2) virsh pool-start foo error: Failed to start pool foo error: internal error: cannot find session virsh -c qemu:///system pool-start foo error: Failed to start pool foo error: internal error: cannot find session Why can't libvirt find the session, and which session? Running iscsiadm --mode discovery --type sendtargets --portal vmhost:3260,1 succeeds and lists the targets. How to connect libvirt to the iSCSI target? System info: Debian sid, Linux 3.11-2-amd64 libvirtd (libvirt) 1.1.4 virsh version: 1.1.4 iSCSI target: FreeNAS-9.1.1 Best regards Marco ¹ https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux…

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[libvirt-users] how to use openConsole and openGraphics
by yue 28 Dec '13

28 Dec '13

hi,all 1.how to use openConsole and openGraphics? 2.what is the theory of that? thanks

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[libvirt-users] fail to live migration is related to virtio-console
by yue 28 Dec '13

28 Dec '13

hi,all this error occured when live migration windows os, log of that vm is: features 0x1e unsupported allowed features 0x71000002 qemu warning error while loading state for instance 0x0 of device '0000:00:04.4/virtio-console' do you have some idea about that? thanks

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[libvirt-users] Reg: Methods in DomainJobInfo
by Rathidevi 27 Dec '13

27 Dec '13

Hi All, I am new to libvirt. Please explain about the units (which is bytes or KB or MB) and uses of DomainJobInfo and DomainBlockInfo methods. Like getMemRemaining(), getDataRemaining() etc. Using libvirt version is libvirt-0.5.1. Thank you Regards, Rathidevi

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[libvirt-users] Live migration without block copy
by Paul Mathews 25 Dec '13

25 Dec '13

Hello all, I'm trying to get live migration without block copying working in a custom solution, but I think I need a better understanding of the migration process. In my environment, I have two iscsi targets exported which are then placed into a raid via mdadm on the compute node. I've tried using the already exposed hook on stop to disassemble and re-export storage, and I also made my own when the source hits perform3_done phase, but at that point the md device is still locked. It seems like there should be a time in a live migration where both instances are in a paused state and everything has been flushed to disk, I'm just not familiar enough with the code to determine where that is. -Paul

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[libvirt-users] man page
by Fl＠sh 24 Dec '13

24 Dec '13

It seems to me that the man page is not complete. Personally, I had to read the code to understand. Propose to amend paragraph of included files on: -i GUEST-PATH=HOST-PATH, --include GUEST-PATH=HOST-PATH File (HOST-PATH) to copy into custom dir (GUEST-PATH). -I HOST-PATH, --includefile=HOST-PATH Copy all files listed in inputfile into the appropriate temporary sandbox directories. File should contain a line like: GUEST-PATH=HOST-PATH Directory (or subdirectory) of GUEST-PATH path must to exist in the guest filesystem (use --mount) Maybe I misunderstood how to use inclusion, but it says even more about what leadership should be written in detail. P.S. On the use of the network too. -- F1ash

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