July 2015 - Users - libvirt List Archives

Re: [libvirt-users] Migrate Win2k3 to KVM
by Pierre Schweitzer 13 Jul '15

13 Jul '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 07/13/2015 09:58 AM, Ruzsinszky Attila wrote: >> Here is the first problem. I can't mount sdi1! sdi1 not >> existent. >>> :-( >> >> What if you partprobe /dev/sdi? >> > Nothing. Empty output. When partprobe properly works (ie encounters no error), it doesn't print anything to console, it just adds the appropriate entries in /dev. (I guess some answers got lost on libvirt-users, sorry about that). - -- Pierre Schweitzer <pierre(a)reactos.org> System & Network Administrator Senior Kernel Developer ReactOS Deutschland e.V. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJVo4GDAAoJEHVFVWw9WFsLEpAP/jXOTqFf+Uog9/J5iuBh9ktU X4tEPEBa6j2V8Pkyv5YHKFe1T4JWvZw0AcbAuEQMS0glt3PUY7lsKFmqcYzJEukB w95vqMbvtguRneMh1G9tbEdOk47/T0zEnDXBz6/wyHGxkz3xGNqkoD6gxL0w2gui 5WAAdv8CPKptUZKKWGxABdZBxMobUNwtowTL0/Ir5BEiMl9wCHbgq6NOrU4Aungm kjLfR6BcecUkYh9lFeiyakYuENohNkZiP1f+zA8AlsZQDwAZP5Qe/J1vvfdawLiW pmYOT8Cmb6lp+O9iZhIQCAcE8EgZ9I6O0+J1vbVESSb+s4V1p1/Psu5zNqYMHMZJ 3He9X1Jj8vD0qliPW/YpRVMyRde77H7NNHSuX9QU/3Z2RFMLLT5Hx0ywElDLYJI/ aYiQgD1+bEp8T6frpmaowj1jXt7OraLnblaa92md4vwMm0Bl/Oui7y+kr5XO1gjD yri+YxAtptdge6nm2evLorQFrRi5DaVbjx0WPPHY2UJActo9lCHMciCyzAnUpsz3 c99Vlvk8jc2gTywst/rRgs7Ww9S+rxIRJZ6vck/lIjMjviIViH3aN0sQRB0cynLp DPhkB/Yedmj8PpNQstl8srg1D34Itir80Ve/uk7/vdlZp1D1670r7nXN6p46IGh5 Fn3/SNUE5Hfa0DBSqo9o =ovns -----END PGP SIGNATURE-----

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Re: [libvirt-users] Migrate Win2k3 to KVM
by Ruzsinszky Attila 13 Jul '15

13 Jul '15

Hi Vincent, I can access to the source physical machine but it is an almost 24h running machine. I heard about VMware P2V program. I've never used it, yet. I don't want to virtio. I want a booting W2k3. That's all. ;-) TIA, Ruzsi

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[libvirt-users] Migrate Win2k3 to KVM
by Ruzsinszky Attila 12 Jul '15

12 Jul '15

Hi, I made a disk image with CloneZilla from the original physical machine. That image was restored on an iSCSI volume. It isn't booting. I got BSOD. I tried IDE, SATA, SCSI disk type without any success. I tried to using virtio driver and if I use my image+W2k3 install CD+virtio VFD the Windows repair console see the disk and I can use the repair console with my image but the windows not start (or not booting because the system disk can't be seen by original "registry"). The drivers from virtio VFD image were copied to Windows' Driver directory manually. I tried to use virt-win-reg: rattila@amd1:~$ virt-win-reg SJ-SIMISPC /dev/disk/by-path/<iSCSI-path>:simispc-lun-2: Engedély megtagadva at /usr/bin/virt-win-reg line 260. (it means: Permission denied.) What can I do changing the original driver to virtio (or IDE/SATA/SCSI in KVM)? I can't do anything with the physical machine so the only option is playing with the disk image. TIA, Ruzsi

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[libvirt-users] libvirt beginner needs to create and start VMs entirely on command line
by KARR, DAVID 11 Jul '15

11 Jul '15

I'm a beginner to libvirt and creating VMs, for that matter. I have a set of specifications for VMs I need to create and log into, but I have to create them on an Ubuntu box that I only have ssh access to. I won't have desktop GUI access, although I do have dynamic port forwarding, so I can access a browser GUI from my desktop. Reading through the libvirt info, I see numerous mentions about using VNC to do additional work, but I won't be able to use VNC (not allowed within our firewall). I could use some advice on how to move forward with this. I've started at https://help.ubuntu.com/lts/serverguide/libvirt.html for initial information. I managed to create a disk image for my first VM, and I believe I created the first VM using an ISO (based on CentOS, I believe), but I'll probably have to rebuild that, because I think I have to configure networks on the VM, which I didn't do on initial creation. I was confused by the initial results from "virt-install", because it seemed to hang after a second or two (I posted this SO question about this: http://stackoverflow.com/questions/31302871/trouble-using-virt-install-on-u… ). The reply from this makes it seem like it was trying to present a GUI for next steps, but I of course never saw that. The VM appears to exist, but in a "shut off" state.

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[libvirt-users] Fw: Error attaching tape drive device to KVM guest
by Jake Kugel 11 Jul '15

11 Jul '15

A quick follow-up in case anyone else is trying to use IBM tape device within a KVM guest. I didn't get SCSI passthrough below working, but there were two alternatives recommended to me: (1) Use PCI passthrough to give the KVM guest dedicated access to the Fibre Channel HBA PCI card. PCI passthrough seems to be more solid. (2) Use ISCSI to share the tape devices and tape changer devices from physical host, and use ISCSI client on KVM guest to access. We were successful using option 2 even though there is performance penalty for bridging with ISCSI. It gives us greater flexibility, we don't have to dedicate a PCI card to the KVM guest. ----- Forwarded by jkugel us ibm com on 07/10/2015 01:50 PM ----- jkugel us ibm com wrote on 07/06/2015 10:23:45 AM: > From: jkugel us ibm com > To: libvirt-users(a)redhat.com > Date: 07/06/2015 10:23 AM > Subject: Error attaching tape drive device to KVM guest > > Hello, > > i'm trying to configure a host SCSI device (tape drive) so that it > is available in a KVM guest VM, but am receiving an error when > attempting to attach the device. My guest xml has the following > scsi controller defined: > > <controller type='scsi' index='0' model='virtio-scsi'> > <alias name='scsi0'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' > function='0x0'/> > </controller> > > I created tapedrive.xml with following contents: > > <disk type='block' device='lun' sgio='unfiltered'> > <driver name='qemu' type='raw' cache='none'/> > <source dev='/dev/st0'/> > <target dev='st0' bus='scsi'/> > <address type='drive' controller='0' bus='0' target='0' unit='0'/> > </disk> > > I then attempt to attach using following command, and receive this error: > > # virsh attach-device instance-0000002d tapedrive.xml --config > error: Failed to attach device from tapedrive.xml > error: internal error: Invalid harddisk device name: st0 > > Does anyone know cause of the error? In <address> section of tape > drive definition I am using type='drive', I tried type='tape' also > but same error. is there a different property value I should use > here, or general advice for attaching tape drive to KVM guest? Thanks, Jake

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[libvirt-users] cpuacct and emulator/cpuacct
by Jean-Pierre Ribeauville 09 Jul '15

09 Jul '15

Hello, Does it exist some documentation concerning following topic ? What's difference between following perf counters : /cgroup/cpuacct/libvirt/qemu/test/cpuacct.usage and /cgroup/cpuacct/libvirt/qemu/test/emulator/cpuacct.usage Thx . Regards, J.P. Ribeauville P: +33.(0).1.47.17.27.78 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] adding devices and chardev in .xml configuration file ...
by Jean-Pierre Ribeauville 09 Jul '15

09 Jul '15

Hi, As I want to start qemu by adding following parameters : -device virtio-serial -chardev socket,path=/tmp/foo,server,nowait,id=test -device virtserialport,chardev=test,name=port.0 Is it possible to add them in the .xml configuration file of the guest , so they will be automatically added when the guest is started ? If yes , any doc describing the syntax ? Thx. Regards, J.P. Ribeauville P: +33.(0).1.47.17.27.78 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] Migrate Win2k3 to KVM
by Ruzsinszky Attila 09 Jul '15

09 Jul '15

Hi, I made a disk image with CloneZilla from the original physical machine. That image was restored on an iSCSI volume. It isn't booting. I got BSOD. I tried IDE, SATA, SCSI disk type without any success. I tried to using virtio driver and if I use my image+W2k3 install CD+virtio VFD the Windows repair console see the disk and I can use the repair console with my image but the windows not start (or not booting because the system disk can't be seen by original "registry"). The drivers from virtio VFD image were copied to Windows' Driver directory manually. I tried to use virt-win-reg: rattila@amd1:~$ virt-win-reg SJ-SIMISPC /dev/disk/by-path/<iSCSI-path>:simispc-lun-2: Engedély megtagadva at /usr/bin/virt-win-reg line 260. (it means: Permission denied.) What can I do changing the original driver to virtio (or IDE/SATA/SCSI in KVM)? I can't do anything with the physical machine so the only option is playing with the disk image. TIA, Ruzsi

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[libvirt-users] Access to virtualization on a multi-user system
by sbaugh＠catern.com 09 Jul '15

09 Jul '15

Hi libvirt-users, I find myself wanting to do something that seems like it must have some obvious solution: I have multiple users (let's just assume local Unix accounts) on a Linux system, and I want them all to have access to KVM-accelerated virtualization. But, I don't want them to be able to meddle with each other's virtual machines. Is there a solution to this problem? Methods of attack that have occured to me: - Use PolicyKit to only allow a user to access qemu:///system VMs that are somehow marked as owned by that user - Run multiple libvirt qemu:///system daemons and restrict access to each on a per-user basis - Allow qemu:///session VMs to actually be KVM-accelerated (this seems like the best way to do it, but I have no idea if that's even possible) Again, the third seems like the best way, but I'm not sure of how to allow such VMs to be KVM-accelerated, and not sure if it's possible for them to use anything other than usermode networking. Hopefully I'm missing some obvious way to do it! Thanks for any assistance!

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[libvirt-users] Error attaching tape drive device to KVM guest
by Jake Kugel 07 Jul '15

07 Jul '15

Hello, i'm trying to configure a host SCSI device (tape drive) so that it is available in a KVM guest VM, but am receiving an error when attempting to attach the device. My guest xml has the following scsi controller defined: <controller type='scsi' index='0' model='virtio-scsi'> <alias name='scsi0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> I created tapedrive.xml with following contents: <disk type='block' device='lun' sgio='unfiltered'> <driver name='qemu' type='raw' cache='none'/> <source dev='/dev/st0'/> <target dev='st0' bus='scsi'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> I then attempt to attach using following command, and receive this error: # virsh attach-device instance-0000002d tapedrive.xml --config error: Failed to attach device from tapedrive.xml error: internal error: Invalid harddisk device name: st0 Does anyone know cause of the error? In <address> section of tape drive definition I am using type='drive', I tried type='tape' also but same error. is there a different property value I should use here, or general advice for attaching tape drive to KVM guest? Thanks, Jake

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[libvirt-users] Slow network performance issues
by Alex Regan 03 Jul '15

03 Jul '15

Hi, I have a fedora21 system that's been running fine under normal network activity, but trying to perform a full backup of the 300GB filesystem is taking forever because the network speed appears to be very slow. Using rsync, the transfer speeds reach a max of like 180kB/s. Using rsync to copy files on the local filesystem is greater than 55MB/s, so I don't think it's a disk issue. What kind of network speed can I expect copying data across the network from the guest to another host on the same gigabit network? I'm using the virtio driver: # lsmod|grep virtio virtio_console 28672 0 virtio_balloon 16384 0 virtio_net 32768 0 virtio_blk 20480 4 virtio_pci 24576 0 virtio_ring 20480 5 virtio_blk,virtio_net,virtio_pci,virtio_balloon,virtio_console virtio 16384 5 virtio_blk,virtio_net,virtio_pci,virtio_balloon,virtio_console ethtool on the vnet0 interface shows the speed at only 10Mb/s. Is that normal? Or even changable? I've included the qemu command-line below. # ps ax|grep propguest 1582 ? Sl 25433:37 /usr/bin/qemu-system-x86_64 -machine accel=kvm -name propguest -S -machine pc-1.2,accel=kvm,usb=off -m 16384 -realtime mlock=off -smp 4,sockets=4,cores=1,threads=1 -uuid b67e10fe-7ef0-a1ca-cecf-3f3506d54e1a -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/propguest.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/var/lib/libvirt/iso-images/Fedora-18-x86_64-DVD.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive file=/var/lib/libvirt/images/propguest.img,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/var/lib/libvirt/images/propguest-2.img,if=none,id=drive-virtio-disk2,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x9,drive=drive-virtio-disk2,id=virtio-disk2 -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:11:66:5a:51,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x8 Any ideas greatly appreciated. Thanks, Alex

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