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[libvirt-users] virDomainCoreDumpWithFormat files created as root
by NoxDaFox 19 Nov '15

19 Nov '15

Greetings, I am dumping a guest VM memory for inspection using the command "virDomainCoreDumpWithFormat" and the created files appear to belong to root (both user and group). I have searched around but didn't find any answer. Is there a way to instruct QEMU to create those files under a different user? Thank you.

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[libvirt-users] Add host
by Sakhi Hadebe 18 Nov '15

18 Nov '15

Hi, I have two host machines both installed with libvirt and virt-manager, which provides me with GUI. I have virtual machines running in one of the host. Now I want to migrate some of the virtual machines to the other machines. I am trying to migrate using the Virtual Machine Manager. When I select migrate, it pops up a window to choose the new host. The dropdown menu to choose the new host for the virtual machine is empty. How do you add the new host to the other, so they can know each other? Does it require a clustering software to achieve that? I need some assistance in that regard -- 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] Telling virt-manager to re-read ~/.gconf in RHEL 6
by Digimer 16 Nov '15

16 Nov '15

Hi all, I've written a tool that configured Virtual Machine Manager, but I've got a condition that I am now sure how to handle... If the user isn't logged in and I configure their ~/.gconf/apps/virt-manager/*, and then they log in, everything works great. However, if they've already logged in and there was no prior virt-manager configuration, the custom config is overwritten and lost when the user logs out. Similarly, if VMM is closed, I write the config and then they open VMM (again, having logged into gnome where there was no ~/.gconf/apps/virt-manager), it acts like there is no configuration (it tries to auto-connect to localhost and doesn't show the remote machines). I am guessing this behaviour is a because VMM doesn't check it's configuration file after logging into gnome (either at all, or at least when there was no config at gnome login). Is there a way I can tell virt-manager to re-check the config? Thanks! -- 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] Qemu-ga on Windows 10
by Dominique Ramaekers 14 Nov '15

14 Nov '15

Hi, I have a windows 10 guest with qemu-ga-x64.msi installed from the fedora virtio iso. qemu-ga version is 0.12.1 host qemu version is 2.1.0 (I know its older but in this version the active block commit works perfectly...) libvirt version 1.2.12 I have these lines in my xml: <channel type='unix'> <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/PCVIRTmbe.org.qemu.guest_agent.0'/> <target type='virtio' name='org.qemu.guest_agent.0' state='disconnected'/> <alias name='channel0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> /var/lib/libvirt/qemu/channel/target/PCVIRTmbe.org.qemu.guest_agent.0 exists on the host and the rights seems to be all right. On the guest, the folder C:\ProgramData\qemu-ga exists Still, I can't start the qemu-ga service. I get this error: Can't start QEMU GuestAgent-service on the local computer Error 1053: The service didn't answer correctly on the start command (or something like this, the error message in in Dutch) If I start the qemu-ga from the cmd I get this error: error opening path error opening channel failed to create guest agent channel failed to initialize guest agent channel Does anybody got an idea how to resolve this problem? Thanks in advance. Dominique.

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[libvirt-users] How to fix an incorrect storage pool?
by Phill Edwards 14 Nov '15

14 Nov '15

I've created my storage pool incorrectly. I'm using LVM and I have a volume group called vms-lvm. When I look at it in virt-manager I see that the volumes it contains are home, root and swap, so when I created the storage group in virt-manager I must have specified something incorrectly. Unfortunately I can't find a way to correct this. If I try to destroy (stop) the storage group I get an error: # virsh pool-destroy vms-lvm error: Failed to destroy pool vms-lvm error: internal error: Child process (/usr/sbin/vgchange -aln centos_hyv2) unexpected exit status 5: Logical volume centos_hyv2/swap in use. Can't deactivate volume group "centos_hyv2" with 3 open logical volume(s) Same if I try to undefine it: # virsh pool-undefine vms-lvm error: Failed to undefine pool vms-lvm error: Requested operation is not valid: storage pool 'vms-lvm' is still active Can anyone please advise how I get out of this mess? There must surely be a way of undefining this?

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[libvirt-users] a VM does not get dhcp
by lejeczek 12 Nov '15

12 Nov '15

hi everybody I'm looking at my setup and got stuck I have a box with two NICs on the same subnet, and another box similar, also two NICs on one subnet, all four NICs are on the same subnet. Now, that second box has also a virtual NIC (libvirtd's bridge route mode) and VMs guests are using it, traffic to that virtual net is routed via 1st real NIC. This second box dhcrelays to the first box(dhcpd). I see box-dhcrelay forwards to box-dhcpd, I see box-dhcpd receives and offers a lease but that VM guest does not get it. I have policy routing manually set in place so both boxes can ping each other all NICs. (including virtual NIC on the box-dhcrelay) Moreover, that VM guest can ping both boxes' all NICs when its IP address is set to manual. It's RHEL7 and I'm only trying IPv4. I'm hoping some can rule out (or suggest what might be broken in) libvirt/policy based routing. I see those offers box-dhcpd makes are exactly for the subnet of box-dhcrelay's virtual NIC/subnet. It's a pickle. An expert's thought would be great to hear.

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[libvirt-users] xen+ssh with openauth
by Shahar Havivi 12 Nov '15

12 Nov '15

Hi, I am trying to connect to remote libvirt via script, and I get password prompt from the shell. ============================================================================ uri='xen+ssh://root@myserver/?no_verify=1' def req(credentials, user_data): print('in req...\n') for cred in credentials: if cred[0] == libvirt.VIR_CRED_AUTHNAME: cred[4] = username elif cred[0] == libvirt.VIR_CRED_PASSPHRASE: cred[4] = passwd return 0 auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_PASSPHRASE], req, None] con = libvirt.openAuth(uri, auth, 0) ============================================================================ The script never enter req() method but prompts for password, after I enter the password I am able to connect to the remote machine. I did try to put all the flags ie: auth = [[1,2,3,4,5,6,7,8], req, None] with no successes as well... The server is RHEL 5.11 with libvirt-0.8.2-29.el5_9.1 Thank you, Shahar.

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[libvirt-users] ERROR_NO_SYSTEM_RESOURCES on virtio port within the Windows Guest
by Jean-Pierre Ribeauville 10 Nov '15

10 Nov '15

Hi, >From a Windows Guest , I try to read data sent by the Host , via a virtio port . ( I.e. channel device type UNIX on host side) If no data sent by Host , the blocking ReadFile() invoked within the Guest exits immediately with following error code : ERROR_NO_SYSTEM_RESOURCES 1450 (0x5AA) Insufficient system resources exist to complete the requested service. Is it the waited behavior or did I misunderstood something ? If datas are sent , I got them correctly. Thx for help. J.P. Ribeauville P: +33.(0).1.47.17.20.49 . Puteaux 3 Etage 5 Bureau 4 jpribeauville(a)axway.com<mailto:jpribeauville@axway.com> http://www.axway.com<http://www.axway.com/> P Pensez à l'environnement avant d'imprimer.

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[libvirt-users] availability of target type state within a dumpxml result
by Jean-Pierre Ribeauville 09 Nov '15

09 Nov '15

Hi, I'm trying to find out what is the minimum release I need to use to have this field 'state' available ? <channel type='unix'> <source mode='bind' path='//var/lib/libvirt/qemu/dummy_agent'/> <target type='virtio' name=dummy' state='connected'/> <alias name='channel0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> By using a virsh 0.10.2 , it seems tooo old . Thanks for help. J.P. Ribeauville P: +33.(0).1.47.17.20.49 . Puteaux 3 Etage 5 Bureau 4 jpribeauville(a)axway.com<mailto:jpribeauville@axway.com> http://www.axway.com<http://www.axway.com/> P Pensez à l'environnement avant d'imprimer.

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[libvirt-users] How could I do the guest mount operation from the host?
by 李笳平 09 Nov '15

09 Nov '15

Hi all, When I attach a disk like this: <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/kvmdata/disk/dk389_581.img'/> <backingStore/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </disk> And then I use “fdisk -l” on the guest, can find the disk info, if I want to mount a disk, I should log on the guest and use the command just like: mount /dev/vda1 /mnt Does Libvirt has some API which can send the guest operation(like mount/umount) from host to guest? Thus I can do the operation on host and need not to log on guest to do the operation. Thanks! Best Regards From Jiaping LI 保密：本函仅供收件人使用，如阁下并非抬头标明的收件人，请您即刻删除本函，勿以任何方式使用及传播，并请您能将此误发情形通知发件人，谢谢！

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