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[libvirt-users] virt-install: failed to initialize KVM: Permission denied
by arnaud gaboury 20 Aug '14

20 Aug '14

As a regular user, member of the libvirt group, I run this command to create a basic VM: virt-install --connect qemu:///system --name=test --ram 2048 --cpu host-model-only --os-variant=win7 --disk /myVM/test --boot cdrom,hd --virt-type kvm --graphics spice --controller scsi,model=virtio-scsi --cdrom=/drawer/myIso/w8.iso It returns an error : --------------------------------- Starting install... ERROR internal error: process exited while connecting to monitor: Could not access KVM kernel module: Permission denied failed to initialize KVM: Permission denied --------------------------------- $ getfacl /dev/kvm # file: dev/kvm # owner: root # group: kvm user::rw- user:martinus:rw- group::rw- mask::rw- other::--- The command return seems to indicate rights are correct. $ lsmod return kvm & kvm_intel are loaded. If I run the virt-install with qemu:///session, I do not have this issue and can create the VM. I found many entries about the KVM permission issue, but with no clear answer to solve it. Thank you for any suggestion -- google.com/+arnaudgabourygabx

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[libvirt-users] Guest vlan trunk port networking issues
by Dennis Jacobfeuerborn 20 Aug '14

20 Aug '14

Hi, I'm having trouble getting networking to work and I'm not sure what I'm doing wrong. The network interface of the host is connected to a switch-port that is configured as trunk and allows tagged traffic for vlan id 10. The host itself has the interfaces eth1.10 and eth1 defined. eth1.10 is configured with the primary ip address of the host system and eth1 is slave of the bridge br1. I installed a guest with a virtual network interface that is added to br1 the idea being that I can define an interface eth0.10 in the guest and have the tagged traffic forwarded this way: (guest) eth0.10 (packet gets tagged with id 10) -> (host) vnet0 -> (host) br1 -> (host) eth1 -> network The issue is that when I do a ping in the guest I see the arp request on eth1 with tcpdump but no response as if the packet doesn't reach its target. Normaly at this poing I would suspect the switchport configuration but when I ping the same IP from the host (which has an IP in the same network on interface eth1.10) this ping works fine. Does anybody have experience with this and maybe an idea why the host can reach the ip in vlan 10 but the guest can not? Could this be a routing issue that the system somehow discards the packets flowing through eth1 directly because there also is an interface eth1.10 present? Regards, Dennis

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[libvirt-users] How to install libvirt-python from source code?
by Can Zhang 19 Aug '14

19 Aug '14

Hi, I’d like to install a latest version libvirt on CentOS 6.5. I compiled libvirt, it worked well and then I tried to install libvirt-python. The version is libvirt-python-1.2.7, and I used `python setup.py build` and `sudo python setup.py install` to install. But in python, I get errors like: ========== >>> import libvirt Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.6/site-packages/libvirt.py", line 28, in <module> raise lib_e ImportError: /usr/lib64/python2.6/site-packages/libvirtmod.so: undefined symbol: virTypedParamsAddBoolean ========== Someone would help? Best regards, Can Zhang

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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 15 Aug '14

15 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 14 Aug '14

14 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 14 Aug '14

14 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 14 Aug '14

14 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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