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[libvirt-users] Libvirt-install w8 iso
by arnaud gaboury 16 Aug '14

16 Aug '14

I am using this command to install a w8 guest on my Archlinux host: virt-install --connect qemu:///system --name=tintinVM --ram 4096 --cpu host-model-only --os-variant=win7 --disk /dev/vg0/tintin,size=120,bus=virtio,sparse=false,format=raw --name="tintinVM" --network bridge=virbr0,model=virtio --graphics spice --cdrom /dev/cdrom The virtual machine window open and show the blue windows logo. But then nothing happens and I can't start the install process. I hav eno idea why. The w8 iso file is clean. I test booting from it and I can start the install. What is wrong with my command? How can I try another way (like mounting the ISO on a dir). I dual boot arch and w8, so there is already a w8 installed on my ssd. Maybe can make an .img of the installed w8 then use this img ? Or directly use the partiton? I must add my machine boots in EUFI, not sure it has something to do. Then, I have issue when loading KVM kernel modules: permission denied. The user is in the KVM & qemu group, and /dev/kvm belongs to user:kvm. I need to # rmmod kvm_intel before I start $ virt-install ..... Last, I don't understand well if I need to use qemu///system or qemu///session ? My goal is to let users start a VM when in their arch session. Thank you for any suggesuions. -- google.com/+arnaudgabourygabx

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[libvirt-users] virt-manager and libvirt-python
by Фарит Мутугуллин 16 Aug '14

16 Aug '14

Hello! I'm trying to work with virt-manager but getting SIGTRAP signal. It is done with gdb under MinGW32 on Windows 7 64-bit. I have Python 2.7.8. 32-bit. As I can see from backtrace ( http://pastebin.com/JhN6XgYb ), there is something wrong with libvirtmod.pyd. Also I couldn't find how to solve " typelib for AppIndicator3" error. So I try to debug libvirt-python. For doing this, I building libvirt-python with -g flag. python setup.py build --compiler=mingw32 -g install But I have undefined reference to _imp__Py_InitModule4. http://pastebin.com/9gw1zsmw Earlier I built Python with debug info as -lpython27_d was needed. I tried to build with python_d, but got the same error. Nevertheless, when I build without -g, everything builds just fine. Could you tell me what am I doing wrong? Or is SIGTRAP coming from somewhere else? What SIGTRAP can be caused by?

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[libvirt-users] virt-manager/ GTK & py issue
by arnaud gaboury 15 Aug '14

15 Aug '14

Sorry to post here, but filling a bug @ bugzilla is impossible. There seems to be a bug there and it was impossible for me to log with the newly created account. OS : Archlinux x86_64 libvirt 1.2.7-1 libvirt-glib 0.1.8-2 libvirt-python 1.2.7-1 pygtk 2.24.0-4 gtk2 2.24.24-1 gtk2-perl 1.2492-1 gtk3 3.12.2-1 python 3.4.1-1 python2 2.7.8-1 ISSUE : virt-manager GUI. Create a mew machine. > Display > Spice server Returns error Error refreshing hardware page: Must be string, not TreeModelRow Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/details.py", line 1197, in hw_selected self.refresh_graphics_page() File "/usr/share/virt-manager/virtManager/details.py", line 2755, in refresh_graphics_page title = self.gfxdetails.set_dev(gfx) File "/usr/share/virt-manager/virtManager/gfxdetails.py", line 197, in set_dev uiutil.set_combo_entry(self.widget("graphics-type"), gtype, 0) File "/usr/share/virt-manager/virtManager/uiutil.py", line 140, in set_combo_entry combo.get_child().set_text(value or "") TypeError: Must be string, not TreeModelRow

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[libvirt-users] Ubuntu 14.04 LTS KVM issue: setdev ioctl failed on blockpoll: Device or resource busy
by Jianfeng Tang 15 Aug '14

15 Aug '14

> Hi, I ran into a strange issue when I brought up my virtual device on KVM after I upgraded my box to Ubuntu 14.04 LTS. My virtual device has two disks: one boot disk and one empty disk. It was able to boot up, but ioctl on the second disk image failed with error messages like: setdev ioctl failed on blockpoll: Device or resource busy Any thoughts what happened. It worked fine with Ubuntu 12. Our virtual device called open_bdev_exclusive and failed. AppArmor seems not the problem because I saw the same issue with app armor disabled. Thanks. >

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[libvirt-users] esx: upload the volume
by Matwey V. Kornilov 15 Aug '14

15 Aug '14

Hi, I am running virsh 1.0.2 with standalone esxi 5.5up1 I would like to upload iso image to the esxi. I am executing commands vol-create followed by vol-upload, that leads me to success for libvirt/qemu. But with esx driver I get the following. virsh # vol-create-as --pool datastore2 --name coreos_production_iso_image.iso --format raw --capacity 139460608 error: Failed to create vol coreos_production_iso_image.iso error: internal error Volume name 'coreos_production_iso_image.iso' doesn't have expected format '<directory>/<file>' virsh # vol-create-as --pool datastore2 --name 'coreos/coreos_production_iso_image.iso' --format raw --capacity 139460608 error: Failed to create vol coreos/coreos_production_iso_image.iso error: internal error Volume name 'coreos/coreos_production_iso_image.iso' has unsupported suffix, expecting '.vmdk' The error messages lead me to idea that I am doing something wrong.

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[libvirt-users] Behavior of disk caching with qcow2 disks
by Andrew Martin 15 Aug '14

15 Aug '14

Hello, I am running several virtualization servers with QEMU 1.4.x and libvirt 1.0.2 on Ubuntu 12.04 and am working on optimizing the cache= and aio= options for the virtual machines. These VM images are mostly qcow2, and are served both from a local ext4 filesystem (with data=ordered,barrier) and from an NFS mountpoint (with sync). The local filesystem sits on top of an md software RAID of SATA HDDs. I have read some conflicting information about which cache option is used by default. This documentation states that cache=writethrough is the default: http://www-01.ibm.com/support/knowledgecenter/linuxonibm/liaat/liaatbpkvmgu… However this SuSE documentation claims that QEMU 1.2.x and newer allows the driver to select which cache mode, and it often defaults to cache=writeback: https://www.suse.com/documentation/sles11/book_kvm/data/sect1_1_chapter_boo… Which is correct? How is the cache mode set by default (if cache= is not specified)? My second question is can cache=none be used safely on a local ext4 filesystem with no BBU? Since ext4 uses barriers, would writing to these qcow2 image files be safe? The kernel documentation about barriers states that "Write barriers enforce proper on-disk ordering of journal commits, making volatile disk write caches safe to use, at some performance penalty". Does this apply to qcow2 VM images? Thanks, Andrew Martin

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[libvirt-users] Error when compiling libvirt 1.2.7 on CentOS 6.4
by Hongbin Lu 14 Aug '14

14 Aug '14

Hi, I was trying to follow this guide (http://libvirt.org/compiling.html) to compile libvirt1.2.7 on CentOS6.4. There is an error on executing "make". Below is the steps to reproduce and the error messages. Any help is appreciated. Thanks. $ sudo yum install gcc make gnutls-devel device-mapper-devel \ python-devel libnl-devel yajl-devel \ libxml2-devel libpciaccess-devel $ wget ftp://libvirt.org/libvirt/libvirt-1.2.7.tar.gz $ gunzip -c libvirt-1.2.7.tar.gz | tar xvf - $ cd libvirt-1.2.7/ $ ./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc --with-openvz=yes $ make ..... Making all in src make[2]: Entering directory `/home/ec2-user/libvirt-1.2.7/src' GEN libvirt_access.xml /bin/sh: -w: command not found make[2]: *** [libvirt_access.xml] Error 127 make[2]: Leaving directory `/home/ec2-user/libvirt-1.2.7/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/ec2-user/libvirt-1.2.7' make: *** [all] Error 2 $ make V=1 .......... /usr/bin/ld:libvirt.syms:3220: syntax error in VERSION script collect2: ld returned 1 exit status make[3]: *** [libvirt.la] Error 1 make[3]: Leaving directory `/home/ec2-user/libvirt-1.2.7/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/ec2-user/libvirt-1.2.7/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/ec2-user/libvirt-1.2.7' make: *** [all] Error 2

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[libvirt-users] provide http server path as vfat floppy/disk
by Vasiliy Tolstov 14 Aug '14

14 Aug '14

Hello. Is that possible to use some url (http/https) that contains files as source for floppy or block device? I can find only http://www.redhat.com/archives/libvir-list/2009-November/msg00604.html that says about local files and floppy, i can write/use fuse based fs , but may be libvirt/qemu have this internally? -- Vasiliy Tolstov, e-mail: v.tolstov(a)selfip.ru jabber: vase(a)selfip.ru

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[libvirt-users] Support live migration of OpenVZ container
by Hongbin Lu 14 Aug '14

14 Aug '14

Hi libvirt team, I was trying to migrate an OpenVZ domain from one host to another host. It seems that the live migration of OpenVZ container is there ( https://openvz.org/Migration_from_one_HN_to_another) but it haven't been integrated to libvirt yet. In particular, I ran the following commands and it failed: $ sudo virsh migrate --live --verbose --undefinesource 101 openvz+ssh:// root(a)10.12.1.39/system error: this function is not supported by the connection driver: virDomainMigrate3 Could anyone confirm if libvirt supports live migration of OpenVZ domain. If yes, please let me know the correct way to do that. If no, I would like to know if there is a plan to add support for that. I don't mind to submit a patch if your team likes to review it. Please let me know. Thanks. Best regards, Hongbin

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[libvirt-users] how virt-manager gets CPU usage of Guest
by Restituto Marcus Arevalo 14 Aug '14

14 Aug '14

Hi, Does anybody know how virt-manager is getting the CPU usage of the guests? I need to know how to get the CPU usage of the guests and this is the only way I can think of. In other words, how does virt-manager produce the graph of the CPU usage of EACH guest in KVM? I don't actually need the graph, I just need to get the percentage(%) since I'm trying to create a Java program to get the CPU usage of each guest in KVM. Thanks! regards, Marco

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