September 2013 - Users - libvirt List Archives

[libvirt-users] some problem with snapshot by libvirt
by xingxing gao 21 Nov '14

21 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] (Xen + libvirt) Installing and workin with xen -4.2.1 and libvirt 1.1.2
by cooldharma06 07 Oct '13

07 Oct '13

hi i want to install libvirt-1.1.2 in xen -4.2.1. i installed int he following manner: 1. downloaded source from libvirt/org (libvirt-1.1.2) 2. untarred & run ./configure --with-xen=yes --with-libxl=yes 3. then make and make install. i also enabled the (xend-unix-server yes) in xend config file. i run libvirtd -v and getting the followning error: root@boss[libexec]#libvirtd -v 2013-09-27 07:24:46.501+0000: 29517: info : libvirt version: 1.1.2 2013-09-27 07:24:46.501+0000: 29517: error : libxlCapsInitHost:86 : internal error: Failed to get node physical info from libxenlight 2013-09-27 07:24:46.501+0000: 29517: error : libxlStateInitialize:1362 : cannot create capabilities for libxenlight 2013-09-27 07:24:46.502+0000: 29517: error : virStateInitialize:840 : Initialization of LIBXL state driver failed: internal error: Failed to get node physical info from libxenlight 2013-09-27 07:24:46.502+0000: 29517: error : daemonRunStateInit:909 : Driver state initialization failed If i missed anything in the installation plz correct me. and guide me to solve this error. regards, cooldharma06.

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[libvirt-users] Bridging Wireless Cards for KVM
by Joshua McKee 02 Oct '13

02 Oct '13

Hi, I hope this is the right place to ask this question. I was wondering if there is a way to set up a KVM VM using an XML document as input into Virsh that uses bridged networking over a wireless card. I understand that wireless cards to not natively support, but I was able to find a working solution here: http://blog.ericwhite.ca/articles/2011/04/creating-a-wireless-bridge/. The issue is, I can use this bridge by calling KVM directly. However, I cannot figure out how to get this same configuration on an XML file that I input into Virsh for the creation of a VM. My understanding is that libvirt calls KVM/QEMU at some point, but I may be mistaken. Thanks, Joshua

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[libvirt-users] LXC, libvrt-1.1.2-r3 (Gentoo), "/dev/tty12", mount /dev with inverse of 'nodev'?
by Dennis Jenkins 01 Oct '13

01 Oct '13

Hello again, TL;DR: Today I noticed that my LXC container was out of space in "/dev". It took me a few minutes to figure out why. There were only 23 files there. The "/dev" fs quota was 64K, and all was taken up. The problem was that "syslog-ng" was writing "console" messages to "/dev/tty12". But "/dev/tty12" was not a device node, so the kernel "(2)open"ed it as a file and dutifully wrote to it. I have corrected my syslog-ng config, but I was wondering.... Is there any legitimate reason to EVER have a regular file in "/dev"? If not, can libvirt or Linux be modified so that the filesystem can be mounted in such a way to prevent a regular file from ever being created there? Kind of like an inverse of the "nodev" mount option seen in various filesystems (ext3, nfs). IMHO, I would rather have syslog-ng (or other tool) fail to open a regular file in "/dev", than for it is succeed and then fill up the small fs. Thoughts? Boring stuff: Sep 30 14:06:47 localhost syslog-ng[440]: Error suspend timeout has elapsed, attempting to write again; fd='16' Sep 30 14:06:47 localhost syslog-ng[440]: I/O error occurred while writing; fd='16', error='No space left on device (28)' Sep 30 14:06:47 localhost syslog-ng[440]: Suspending write operation because of an I/O error; fd='16', time_reopen='60' This is what I see inside the container: djenkins@dwj-hfax-dev ~/src/HylaFAX+ $ find /dev | wc -l 23 dwj-hfax-dev ~ # ls -l /dev/tty* crw-rw-rw- 1 root root 5, 0 Sep 30 13:44 /dev/tty lrwxrwxrwx 1 root root 10 Sep 30 13:03 /dev/tty1 -> /dev/pts/0 -rw------- 1 root root 65536 Sep 30 14:12 /dev/tty12 ### AHHH!!! There is the problem. "syslog-ng" is writing to "/dev/tty12", but it is a file and not a real device. djenkins@dwj-hfax-dev ~/src/HylaFAX+ $ du -sh /dev 64K /dev djenkins@dwj-hfax-dev ~/src/HylaFAX+ $ df -h /dev Filesystem Size Used Avail Use% Mounted on devfs 64K 64K 0 100% /dev

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[libvirt-users] Unable to start libvirt_lxc domain a second time after shutdown
by Florian Klink 30 Sep '13

30 Sep '13

Hi, I'm unable to start a lxc domain again after shutting it down. Something doesn't seem to "clean up" the socket file (and probably more), as the error message says "Unable to start Domain: Failed to connect socket to '/var/run/libvirt/lxc/test.sock': Connection refused." I can create a domain with the same config as the one thats shutted down, but with other uid and name, of course, and I'm able to boot up this domain. However, the init process is much shorter (some filesystems are not mounted), so maybe there is still something left "open" after the lxc container is shut down? I saw the problem in libvirt 1.1.2 and current git (1.1.3-rc2 plus 7 commits, on 51e21ba7b6f59d6ad9339b2da2b75cc7704f9ecf) Configuration is something like this: <domain type='lxc'> <name>test</name> <memory unit='KiB'>1048576</memory> <currentMemory unit='KiB'>1048576</currentMemory> <vcpu placement='static'>1</vcpu> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</init> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/lib/libvirt/libvirt_lxc</emulator> <filesystem type='mount' accessmode='passthrough'> <source dir='/var/lib/libvirt/filesystems/test/root'/> <target dir='/'/> </filesystem> <interface type='network'> </interface> <console type='pty'> <target type='lxc' port='0'/> </console> </devices> <seclabel type='none'/> </domain> Florian

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[libvirt-users] Does libvirt support xapi/xe toolstack?
by Guillaume Thouvenin 30 Sep '13

30 Sep '13

Hello, I installed the last version of Xen (xenserver-core-0.9.0-9.x86_64 from yum) and I'm trying to manage my VMs with virsh. The version that I installed is using the Xapi/xe toolstack. The problem I have is that I'm not seeing the VM that is started with "virsh -c xen:/// list --all". Here is what I have: root# xe vm-list uuid ( RO) : 022226ed-07be-37fc-5b52-f798320e2726 name-label ( RW): vm1 power-state ( RO): running uuid ( RO) : 394fa633-f600-45f9-bea7-3bf4a9fd06fd name-label ( RW): Control domain on host: unknown power-state ( RO): running root# virsh -c xen:/// list --all Id Name State ---------------------------------------------------- # According to [1] it seems that libvirt is using Xend daemon to communicate. The problem is that Xend is now deprecated since Xen 4.1. So am I wrong with this assumption or is there something to configure to be able to use libvirt with Xapi/XE toolstack? I looked in the documentation but I only found [2] but I didn't see any special settings... Regards, Guillaume [1] http://libvirt.org/architecture.html [2] http://libvirt.org/drvxen.html

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[libvirt-users] virt-manager could not start with error "version `LIBVIRT_PRIVATE_0.10.2' not found "
by jimmy he 30 Sep '13

30 Sep '13

Hello all, i am now running xen 4.2.3 on centos 6.4. As we know, the default libvirt package could not work well with xen on centos6.x. So, i compile the libvirt by my self, and i have compiled libvirt-1.1.1, libvirt-1.1.2, libvirt-1.1.3. After the installation of libvirt, i run virt-manager, but it print error as below. *ImportError: /usr/local/lib/libvirt.so.0: version `LIBVIRT_PRIVATE_0.10.2' not found (required by /usr/lib/python2.6/site-packages/libvirtmod.so)* I found one topic talk about the erorr, but get nothing https://www.centos.org/modules/newbb/viewtopic.php?topic_id=41893&forum=56 anyone meet the same error as me? any response is appreciated!

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[libvirt-users] virNodeInfo returns MBytes instead of bytes
by Sam Giraffe 30 Sep '13

30 Sep '13

Hi, http://www.libvirt.org/html/libvirt-libvirt.html#virNodeInfo says that memory size is in kilobytes, however when I use this call I get an answer in Megabytes, see below. The hypervisor has 16 GB of RAM. $ python Python 2.6.6 (r266:84292, Jul 10 2013, 22:48:45) [GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn=libvirt.open("qemu+ssh://xx@xx.xxx.com/system") Enter passphrase for key '/home/xx/.ssh/id_rsa': >>> hv_info=conn.getInfo() >>> hv_info ['x86_64', 15919, 8, 3292, 1, 1, 4, 2] 15,919 is the number I am referencing, should that not be in bytes and not MB? 8 is the number of cores, CPU is 3.2Ghz. $ rpm -q libvirt libvirt-0.10.2-18.el6_4.14.x86_64 $ uname -a Linux xx.xxx.com 2.6.32-358.18.1.el6.x86_64 #1 SMP Wed Aug 28 17:19:38 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Thanks

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[libvirt-users] libvirt: How to boot VM in esx?
by varun bhatnagar 30 Sep '13

30 Sep '13

Hi, Im not able to boot my VM on esx hypervisor using libvirt. It says NO Operating System found. Can anyone help? Regards, Varun

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[libvirt-users] libvirt+python on windows support
by yao xu 27 Sep '13

27 Sep '13

Hi Guys! Recently , I am searching way to run libvirt-python on windows , and using the python api just like in linux . But I found that ,libvirt-python can only run in cygwin environment . In windows environment , when I input "import libvirt" It indicates *ImportError: DLL load failed:* * * * it seemed something wrong when importing libvirtmod* * * * *the libvirt.py libvirtmod.pyd is compiled in *cygwin* environment * * But it doesnot show anything more. Is there anyone do this thing like me ? Anyone can provide any solution to use python-libvirt in a normal python programe. Thanks.

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