- Users - libvirt List Archives

[libvirt-users] [ruby-libvirt] who's using it
by Christian Parpart 01 Nov '11

01 Nov '11

Hey all, I would like to know who / what project is using this binding. So I could learn the API a bit easier than reading through the rough rdoc-based API documentation, which is not really helpful to me, as I do not know the C API yet either. my intention is, to some day, be able to create a Rails web app for managing libvirt hosts (mainly OpenVZ/vserver/LXC and possibly QEMU). Thanks in advance, Christian Parpart.

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[libvirt-users] VM with transient disk
by Till Mossakowski 01 Nov '11

01 Nov '11

I want to use transient disks with libvirt. According to [1], the transient disk feature has been supported since 0.9.5. Hence, I have installed libvirt 0.9.6 for Ubuntu Lucid from [2] and used the following disk configuration: <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/till/test.img'/> <target dev='vda' bus='virtio'/> <transient/> </disk> However, I get: unsupported configuration: transient disks not supported yet Best, Till [1] http://libvirt.org/formatdomain.html [2] http://ppa.launchpad.net/agent-8131/xen-custom/ubuntu/

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[libvirt-users] How to collect the VM bandwidth usage utilization
by vmnode guy 30 Oct '11

30 Oct '11

Hi Guy, I am trying to figure out how & where can i get the bandwidth usage utilization statistic info for all the VM, so in the end i will be able to use it for metering purpose.. Anyone got any idea ? Regards, Peter

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[libvirt-users] live migration error without shared storage
by Luengffy XUE 29 Oct '11

29 Oct '11

command: virsh migrate --live --copy-storage-all vm qemu+ssh://destinationHost/system error : unexpected failure PS log file in the jpg

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[libvirt-users] libvirt-php - API libvirt_domain_suspend() problem, doesn't work
by vmnode guy 28 Oct '11

28 Oct '11

Hi Guys, I was trying to suspend a virtual machine but fail not sure why.... However i was successfully list all the vm on the host, below are my source code, can any one who have experience in this area give me some advised ? *My OUTPUT from browser* Array ( [libvirt.release] => 3 [libvirt.minor] => 9 [libvirt.major] => 0 [connector.version] => 0.4.3 [connector.major] => 0 [connector.minor] => 4 [connector.release] => 3 ) Resource id #2Array ( [0] => VM_6E472D93-F943-2D1E-B1EA-5896D95B9C84 [1] => VM_B090CFCA-77FE-962B-9D06-F85047324527 [2] => VM_7478E5EB-B843-225A-00FC-09D0E846FE61 [3] => winxpnew [4] => VM_1F9BC5A1-352D-0E7D-8BAB-F46FBFE1C80D [5] => VM_B6DA1C45-3F0D-16EF-FDF1-512935D88C37 [6] => VM_F32717EE-4AA4-A17C-8E4B-D1D5A79612A5 [7] => VM_03ABB818-D226-32FB-0A6E-458849AB7C7B [8] => nagios [9] => VM_6C158DB3-71BE-A0D1-3FFB-1EEE5854E45D [10] => VM_8D560513-036A-14FD-7546-48C370F0A057 [11] => VM_AA3DC5CA-A447-E6E5-0E7A-869416869B1D [12] => VM_C19AC7F1-AA49-92D0-336F-B8A8D7FADCD5 ) *Below are my php source : -* <?php echo "<html><body><pre>"; print_r ( libvirt_version() ); $conn = libvirt_connect('qemu+ssh://root@10.0.0.122/system', true); echo $conn; $doms = libvirt_list_domains($conn); print_r($doms); $doms = libvirt_domain_suspend('VM_7478E5EB-B843-225A-00FC-09D0E846FE61'); print_r($doms); echo "</pre></body></html>"; ?> Thanks!! Regards, Peter

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[libvirt-users] Live migration with 2 nodes and no SAN
by Trey Dockendorf 28 Oct '11

28 Oct '11

I'd like to begin using live migrations with my KVM install, but I do not have any shared storage. I will have 2 identical nodes, with their own local storage. Everything I've read seems to point to DRDB, but I am not finding many resources on how to implement DRDB + qcow2 + KVM. Currently I've been using virt-manager to manage my VMs which are all using qcow2 images. With a setup using DRDB, if I mount the replicated device to /var/lib/libvirt/images, what ensures that each virtual disk is only being used by a single node until migration is needed? I have no experience with HA systems or services. What suggestions or experiences has anyone had with this type of setup? Any advice is welcome. Thanks - Trey

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[libvirt-users] delete lvm problem: exited with non-zero status 5 and signal 0
by lingjiao.lc 28 Oct '11

28 Oct '11

hi, I use the libvirt-python to manage my virtual machine. When I delete a volume use vol.delete(0), sometimes it note me that has occur the error: libvirtError: internal error '/sbin/lvremove -f /dev/vg.vmms/lvm-v097222.sqa.cm4' exited with non-zero status 5 and signal 0: Can't remove open logical volume "lvm-v097222.sqa.cm4". then I go to the host and run the command: " sudo lvchange -a n /dev/vg.vmms/lvm-v097222.sqa.cm4" and then the volume could delete use vol.delete(0). But it's not often occur, just once in nearly 8. I know the delete function virStorageBackendLogicalDeleteVol as this: { { const char *cmdargv[] = { LVREMOVE, "-f",vol->target.path, NULL }; virCheckFlags(0, -1); virFileWaitForDevices(); if (virRun(cmdargv, NULL) < 0) return -1; return 0; } Could I change it like this: ? if (virRun(cmdargv, NULL) < 0) const char *changeCmdarg[] = { LVCHANGE, "-a", "n", vol->target.path, NULL }; if(virRun(changeCmdarg, NULL) < 0) return -1; else if(virRun(cmdargv,NULL) < 0) return -1; ________________________________ This email (including any attachments) is confidential and may be legally privileged. If you received this email in error, please delete it immediately and do not copy it or use it for any purpose or disclose its contents to any other person. Thank you. 本电邮(包括任何附件)可能含有机密资料并受法律保护。如您不是正确的收件人，请您立即删除本邮件。请不要将本电邮进行复制并用作任何其他用途、或透露本邮件之内容。谢谢。

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[libvirt-users] Need help to compile libvirt-php
by vmnode guy 27 Oct '11

27 Oct '11

Hi guys, I try to compile the libvirt-php but no luck, below are the output i got.. webserver:~/libvirt-php-0.4.3 # ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking for style of include used by make... GNU checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking dependency style of gcc... none checking for virConnectOpen in -lvirt... yes checking dependency style of gcc... (cached) none checking whether to disable maintainer-specific portions of Makefiles... yes checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ISO C89... (cached) none needed checking dependency style of gcc... (cached) none checking for a sed that does not truncate output... /usr/bin/sed checking for gawk... (cached) gawk checking for echo... echo checking for rm... rm checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking for LIBXML... yes checking for xsltproc... /usr/bin/xsltproc checking for xmllint... /usr/bin/xmllint checking for xmlcatalog... /usr/bin/xmlcatalog checking for php-config... no *configure: error: php-config not found; please install the PHP SDK* webserver:~/libvirt-php-0.4.3 # ls /etc/php5/ apache2/ cli/ conf.d/ webserver:~/libvirt-php-0.4.3 # ls /etc/php5/apache2/ php.ini webserver:~/libvirt-php-0.4.3 # Regards, Peter

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[libvirt-users] live migration without shared storage problems.
by Luengffy XUE 27 Oct '11

27 Oct '11

Hi, all I migrate a vm from source host to the destination host. I am sure every part is ok for migration. 1 Create the image in the destination and change the user and group. 2 Open TCP socket in the destination host. and I migrate in the source host command line. $ virsh migrate --live --copy-storage-all vmubuntu qemu+ssh://destinationHost/system --verbose But I get the error "error: operation failed : failed to retrieve chardev info inqemu with 'info chardev'" In the destination I find in the vmubuntu.log The error is "Migration failed. Exit code tcp:0.0.0.0:49170(-98),exiting." What can I do to solve it ? I do not understand how the error comes. Anyone can help me ? Thanks in advance.

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[libvirt-users] Start of libvirtd fails with error "undefined symbol: __virAlloc"
by Langenbach, Steffen 27 Oct '11

27 Oct '11

Hello List like described in the topic I have a problem with starting the libvirtd. I'm a complete newbie with libvirtd, today I heard the first time that such a daemon exists after I get the message that our webserver isn't running (a former colleague has installed this system). We have the following configuration: A Ubuntu based host on which our webserver runs within a qemu virtual machine. The following happens: Yesterday the host restarted (at the moment we don't know the reason) and since this restart libvirtd did not start up. How I found that out: When I try to start the virtual machine with "virsh start z-web" I get the error: "Connecting to uri: qemu:///session libvir: Remote error : unable to connect to '/var/run/libvirt/libvirt-sock': No such file or directory error: failed to connect to the hypervisor" As explained, I'm a total Newbie with libvirtd. So as far as I know, the libvirt-sock is generated by libvirtd when it's running. I don't know the right way how to start libvirtd. I tried it by just typing "libvirtd", but that generates this error: "libvirtd: symbol lookup error: libvirtd: undefined symbol: __virAlloc". I can't find any log-entry that gives me more information about this error. Does anybody can help me with this problem? In which logfiles does libvirtd normaly writes such errormessages? Or what can the problem be? If you need more information about the configuration or something else, I can find that out, if you tell me where ;) Thanks alot for your help! Kind regards, Steffen ________________________________ Steffen Langenbach IT-Administration Tel: +49 6151 50031-66 Fax: +49 6151 50031-40 Steffen.Langenbach(a)mechatronic.de [http://www.mechatronic.de/fileadmin/gfx/mechatronic_mail.jpg] ________________________________ Mechatronic AG • Wittichstraße 2, 64295 Darmstadt; DE • Tel +49 6151 50031-66 • Fax +49 6151 50031-40 ________________________________ Diese E-Mail enthält vertrauliche Informationen. Wenn Sie diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Die Anfertigung unerlaubter Kopien, die Weitergabe der Information sowie die unbefugte Weitersendung der E-Mail ist nicht gestattet. This e-mail contains confidential information. If you wrongly received this e-mail, please inform the sender immediately and delete this e-mail. Unauthorised copying, disclosure or distribution of this e-mail is strictly forbidden. Amtsgericht: Darmstadt, Sitz: Darmstadt, HRB 9437 Vorstand: Thomas Ullmann (Vors./CEO) Vorsitzender des Aufsichtsrats: Dr. Alexander Geilert

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