- Users - libvirt List Archives

[libvirt-users] Anyone interested in forming a libvirt "docs" team?
by Justin Clift 21 Dec '10

21 Dec '10

Hi all, There's a lot of documentation for libvirt that needs improving, so wondering if anyone would be interested in forming a libvirt "docs" team to help make that happen? While some of the documentation needs people familiar with specific pieces of libvirt, there's also a lot that doesn't, and just needs people with some free time and willingness to help. Anyone up for it? :) Regards and best wishes, Justin Clift

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[libvirt-users] private DNS servers & dnsmasq
by Quint Van Deman 21 Dec '10

21 Dec '10

Hello-- I'm trying to work through the last piece of the puzzle regarding dns resolution for my guests. To do so I'd like to be able to pass the following to the dnsmasq child process: -S /private.net/127.0.0.1 (as referenced in the dnsmasq man page) -S /sub.private.net/127.0.0.1 However, I cannot find any documentation that suggests the xml schema defining the virtual network supports this option. Is there a way of doing this? The ability to pass a '-q' (log queries) would be nice too for debugging purposes. My DNS setup is all working properly (as confirmed with dig & server overrides throughout the environment), but resolv.conf based resolution isn't able to find servers for either of those two domains (dnsmasq is trying to resolve them via an upstream server, which obviously fails). Thanks for any advice. -Quint

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[libvirt-users] Error creating a new vm
by Anthony Davis 21 Dec '10

21 Dec '10

Hi, I wonder if anyone can help me with this, I have been trying to get a vm up and running for a while now and cant for the life of me work out why it isnt working. The errors I get arnt very helpful and im at a loss as how to debug this any further. Here is the command and output that I get...(Also nothing shows up with virsh list --all after so its starting to install then dropping out) Hope someone can help. Thanks! [root@server ~]# /usr/bin/virt-install -n test01 -r 512 --os-variant=virtio26 -l http://172.16.0.100/iso/centos-5.5/ --nographics --noautoconsole --disk path=/dev/vg_storage/test01, bus=virtio -w bridge:br0 -x "console=ttyS0 ks=http://172.16.0.100/ks/ks-vm.cfg" -d -v Sun, 19 Dec 2010 20:45:05 DEBUG Requesting libvirt URI default Sun, 19 Dec 2010 20:45:05 DEBUG Received libvirt URI 'qemu:///system' Sun, 19 Dec 2010 20:45:05 DEBUG Requesting virt method 'hvm' Sun, 19 Dec 2010 20:45:05 DEBUG Received virt method 'hvm' Sun, 19 Dec 2010 20:45:05 DEBUG Hypervisor name is 'qemu' Sun, 19 Dec 2010 20:45:05 DEBUG parse_disk: returning ('/dev/vg_storage/test01', None, None, 'disk', None, False, False, None, True, None) Sun, 19 Dec 2010 20:45:05 DEBUG Setting size for existing storage to '10.0' Sun, 19 Dec 2010 20:45:05 DEBUG Detected storage as type 'block' Sun, 19 Dec 2010 20:45:05 DEBUG Setting size for existing storage to '10.0' Sun, 19 Dec 2010 20:45:05 DEBUG Detected storage as type 'block' Sun, 19 Dec 2010 20:45:05 DEBUG Setting size for existing storage to '10.0' Sun, 19 Dec 2010 20:45:05 DEBUG Detected storage as type 'block' Sun, 19 Dec 2010 20:45:05 DEBUG Setting os type to 'linux' for variant 'virtio26' Sun, 19 Dec 2010 20:45:05 DEBUG DistroInstaller location is a network source. Starting install... Sun, 19 Dec 2010 20:45:05 DEBUG Attempting to detect distro: Sun, 19 Dec 2010 20:45:05 DEBUG HTTP hasFile: didn't find http://172.16.0.100/iso/centos-5.5/.treeinfo Sun, 19 Dec 2010 20:45:05 DEBUG HTTP hasFile: didn't find http://172.16.0.100/iso/centos-5.5/Fedora Sun, 19 Dec 2010 20:45:05 DEBUG HTTP hasFile: didn't find http://172.16.0.100/iso/centos-5.5/Server Sun, 19 Dec 2010 20:45:05 DEBUG HTTP hasFile: didn't find http://172.16.0.100/iso/centos-5.5/Client Sun, 19 Dec 2010 20:45:05 DEBUG HTTP hasFile: didn't find http://172.16.0.100/iso/centos-5.5/RedHat Sun, 19 Dec 2010 20:45:05 DEBUG Detected a CentOS distro Sun, 19 Dec 2010 20:45:05 DEBUG Fetching URI: http://172.16.0.100/iso/centos-5.5/images/pxeboot/vmlinuz Sun, 19 Dec 2010 20:45:05 DEBUG Saved file to /var/lib/libvirt/boot/virtinst-vmlinuz.MKBsh1 Retrieving file vmlinuz... | 1.9 MB 00:00 Sun, 19 Dec 2010 20:45:05 DEBUG Fetching URI: http://172.16.0.100/iso/centos-5.5/images/pxeboot/initrd.img Sun, 19 Dec 2010 20:45:05 DEBUG Saved file to /var/lib/libvirt/boot/virtinst-initrd.img.T2dfhc Retrieving file initrd.img... | 7.7 MB 00:00 Sun, 19 Dec 2010 20:45:05 DEBUG Creating guest from: <domain type='qemu'> <name>test01</name> <currentMemory>524288</currentMemory> <memory>524288</memory> <uuid>5cbb288b-d9f7-bae4-0d05-9157553f53fe</uuid> <os> <type arch='x86_64'>hvm</type> <kernel>/var/lib/libvirt/boot/virtinst-vmlinuz.oddwKg</kernel> <initrd>/var/lib/libvirt/boot/virtinst-initrd.img.POxZ5X</initrd> <cmdline>method=http://172.16.0.100/iso/centos-5.5/ console=ttyS0 ks=http://172.16.0.100/ks/ks-vm.cfg</cmdline> </os> <features> <acpi/><apic/><pae/> </features> <clock offset="utc"/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <vcpu>1</vcpu> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <console type='pty'/> <disk type='block' device='disk'> <driver name='qemu' cache='none'/> <source dev='/dev/vg_storage/test01'/> <target dev='hda' bus='ide'/> </disk> <interface type='bridge'> <source bridge='br0'/> <mac address='54:52:00:66:25:22'/> </interface> <input type='mouse' bus='ps2'/> </devices> </domain> Sun, 19 Dec 2010 20:44:48 DEBUG Removing /var/lib/libvirt/boot/virtinst-vmlinuz.oddwKg Sun, 19 Dec 2010 20:44:48 DEBUG Removing /var/lib/libvirt/boot/virtinst-initrd.img.POxZ5X Sun, 19 Dec 2010 20:44:48 ERROR internal error Domain ims-gl-lin01g01 didn't show up Domain installation may not have been successful. If it was, you can restart your domain by running 'virsh start test01'; otherwise, please restart your installation. Sun, 19 Dec 2010 20:44:48 ERROR internal error Domain test01 didn't show up Traceback (most recent call last): File "/usr/bin/virt-install", line 889, in ? main() File "/usr/bin/virt-install", line 751, in main start_time, guest.start_install) File "/usr/bin/virt-install", line 813, in do_install dom = install_func(conscb, progresscb, wait=(not wait)) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 541, in start_install return self._do_install(consolecb, meter, removeOld, wait) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 633, in _do_install self.domain = self.conn.createLinux(install_xml, 0) File "/usr/lib64/python2.4/site-packages/libvirt.py", line 974, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error Domain ims-gl-lin01g01 didn't show up

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[libvirt-users] libvirt unavailable while a VM is in migration?
by Igor Serebryany 20 Dec '10

20 Dec '10

Hi, I am running libvirt 0.8.6 on qemu (kvm, really) 0.12.5. I have noticed that while a live migration is running, I cannot do anything else with libvirt -- even 'virsh list' blocks without output until the migration is almost done. (At that point 'virsh list' will dump a final screen showing the VM I just migrated as 'running'; the next run of 'virsh list' no longer displays the VM -- this is why I say "almost done".) Is there anything I can do to prevent this? Is there a fix for this coming? MORE DETAILS: I open a connection to a remote libvirt instance and begin a live-migration using: domain.migrate(remoteCon, flags, None, None, 0) My flags are: flags = libvirt.VIR_MIGRATE_PEER2PEER | libvirt.VIR_MIGRATE_LIVE | libvirt.VIR_MIGRATE_UNDEFINE_SOURCE | libvirt.VIR_MIGRATE_TUNNELLED Thanks, --Igor

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[libvirt-users] using virDomainMigrateSetMaxDowntime
by Igor Serebryany 20 Dec '10

20 Dec '10

I would like to use the virDomainMigrateSetMaxDowntime but I'm a bit confused about how to use it. If I try to set the downtime before I call domain.migrate(), I get the error "domain is not being migrated". But I cannot call it afterwards because domain.migrate() does not return until the migration has completed. Am I meant to put the call to domain.migrate() into a separate thread of control, and then call SetMaxDowntime from my main thread after the migration has begun? How do I even know if the migration has begun? Thanks! --Igor

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[libvirt-users] Problems Installing KVM Guest + Console Access
by tony＠specialistdevelopment.com 20 Dec '10

20 Dec '10

Hi, Im having real issues with getting a kvm guest up and running on CentOS 5.5 I have expanded the iso to a path on my system as I have been told that the -x (extra arguments) will not work with the -cdrom option, so I am now using -location, but still the extra arguments are not being picked up. So what do I need to do to get a guest up and working with console access to view the install as its driving me crazy. Thanks Tony

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[libvirt-users] pool info is not updated until pool refresh is run.
by Sharad Mishra 17 Dec '10

17 Dec '10

Hi, Creating a volume does not update pool information until pool-refresh is run. Here is an example - # virsh vol-create ShareStorage /tmp/vol.xml Vol sm_disk.dsk created from /tmp/vol.xml # virsh pool-info ShareStorage Name: ShareStorage UUID: 3ab7dbd5 State: running Capacity: 58.57 GB Allocation: 4.91 GB Available: 53.66 GB # virsh vol-info /var/lib/libvirt/test/sm_disk.dsk Name: sm_disk.dsk Type: file Capacity: 97.66 GB Allocation: 95.47 MB # virsh pool-refresh ShareStorage Pool ShareStorage refreshed # virsh pool-info ShareStorage Name: ShareStorage UUID: 3ab7dbd5 State: running Capacity: 58.57 GB Allocation: 5.01 GB Available: 53.57 GB Why pool-refresh is required to update pool-info? Thanks, Sharad Mishra

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[libvirt-users] aio flag for KVM guests
by Rangababu Chakravarthula 17 Dec '10

17 Dec '10

Hello, We are using libvirt 0.8.3 to build KVM guests (KVM version is qemu-kvm 0.12.5). I see kvm supports aio flag with either native or threads option. Where in libvirt XML should we define aio option? Thanks in advance Ranga

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[libvirt-users] busy loop in libvirtd (cpu usage 100%)
by Igor Serebryany 16 Dec '10

16 Dec '10

Hi! Occasionally of late, I've seen a few cases where libvirtd cpu usage shoots up to 100% and stays there indefinitely. This seems to happen when a QEMU VM is starting up, although on one occasion I *think* I saw it happen after a QEMU VM was p2p-migrated. Doing strace -f -p <libvirtd pid> reveals a flood of poll() functions calls like these: [pid 1690] poll([{fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=12, events=POLLIN|POLLERR|POLLHUP}, {fd=11, events=POLLIN|POLLERR|POLLHUP}, {fd=10, events=POLLIN|POLLERR|POLLHUP}, {fd=9, events=POLLIN|POLLERR|POLLHUP}, {fd=24, events=POLLIN|POLLERR|POLLHUP}, {fd=21, events=POLLOUT}, {fd=14, events=POLLIN}, {fd=15, events=POLLIN}, {fd=16, events=POLLIN}, {fd=17, events=POLLIN}, {fd=21, events=POLLIN|POLLERR|POLLHUP}, {fd=20, events=POLLIN|POLLERR|POLLHUP}], 14, -1) = 1 ([{fd=21, revents=POLLOUT}]) It seems that because 1 is returned each time, libvirtd just goes crazy dealing with fd-3, but I have no idea what fd-3 is. Restarting libvirtd fixes the high load, and then everything just goes back to chugging along as usual. This is on libvirt 0.8.5 with qemu 0.12.5 on a debian Squeeze system (the libvirt is compiled by hand). I'm not sure what's causing it, whether it's a bug in my own code somehow or inside libvirtd. I'd appreciate some help on how to debug this problem further -- restarting libvirtd is kind of a pain for me, because my application, which monitors the health on the node, maintains open connections to 'qemu:///system' and would thus have to restart itself as well... --Igor

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[libvirt-users] KVM Virtualisation, Console output no longer working
by tony＠specialistdevelopment.com 15 Dec '10

15 Dec '10

Hi, I used to use KVM for virtualisation and have now moved back to it, but I have a problem. When i used to install the guest machine with virt-install i used to use the -x "extra args" part to set the console for the install and guest, but it no longer works. Here is the command i use: virt-install -n server01 -r 512 --os-variant=virtio26 -c /isos/c5u5.iso --nographics --noautoconsole -f /storage/vm/server01 -s 5 bus=virtio -w bridge:br0 -x "console=ttyS0 ks=http://www.domain.com/c5u5.cfg" As you can see im setting the console to ttyS0, but then when i go to connect to the console with: virsh console server01 it either wont connect or comes up with: error: Failed to get local hostname Here is a dump of the xml, but no mention of ttyS0 either. <domain type='qemu' id='5'> <name>server01</name> <uuid>5991cf85-db6c-2b87-b76d-07a0caae77b9</uuid> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel5.4.0'>hvm</type> <boot dev='cdrom'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' cache='none'/> <source file='/storage/vm/server01'/> <target dev='hda' bus='ide'/> </disk> <disk type='file' device='cdrom'> <source file='/isos/c5u5.iso'/> <target dev='hdc' bus='ide'/> <readonly/> </disk> <interface type='bridge'> <mac address='54:52:00:61:ea:78'/> <source bridge='br0'/> <target dev='vnet0'/> </interface> <serial type='pty'> <source path='/dev/pts/2'/> <target port='0'/> </serial> <console type='pty' tty='/dev/pts/2'> <source path='/dev/pts/2'/> <target port='0'/> </console> </devices> </domain> Can anyone shed any light on this as im totally stuck.

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[libvirt-users] Deploying libvirt with live migration
by Scott Baker 13 Dec '10

13 Dec '10

I have two physical servers: Virt1 and Virt2. I'm setting up live migration with CentOS 5.5 between the two. I've done this by NFS mounting /etc/libvirt and /var/lib/libvirt/images on both servers. This is working well for me except for one thing. I see the same list of VMs on each server (as expected), but each server (Virt1 and Virt2) are able to start the same VM at the same time. This obviously causes IP conflicts and thrashes the disk image. Is there a way to tell my VM "cluster" that a VM is only allowed to be opened on one host at a time? -- Scott Baker - Canby Telcom System Administrator - RHCE - 503.266.8253

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[libvirt-users] Best filesystem/nfs options for shared storage?
by Scott Baker 13 Dec '10

13 Dec '10

Is there a guide, or some suggestions for what filesystem to use for VM storage? I chose the standard ext3 on CentOS but I'm wondering if it makes more sense to look at ext4 or XFS for performance reasons? Does anyone tweak the ext3 journaling options for libvirt to speed things up? What about NFS export/mount options? What do your fstab mount lines look like? Is there a better rsize/wsize than the default? -- Scott Baker - Canby Telcom System Administrator - RHCE - 503.266.8253

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[libvirt-users] libvirt printing to stderr
by Albert Hopkins 13 Dec '10

13 Dec '10

I'm writing an app and using the Python bindings for libvirt. Everything is fine but, in some cases I need to call lookupByName(). There are a lot of times when the name will not exist, I trap the exception, however I still get this message printed to stderr: libvir: QEMU error : Domain not found: no domain with matching name 'foo' Is there any way to turn this off? This is a command-line program so the extra output makes the interface confusing. I've tried re-assigning sys.stderr before calling lookupByName(), but that doesn't seem to have any affect. tia, -albert

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[libvirt-users] LXC Live Migration possible?
by Dan Lüdtke 13 Dec '10

13 Dec '10

Hallo everyone, in March 2010 there was a discussion[1] about live migration of LXC Containers using libvirt. I was just wondering if there are any updates to this? regards, Dan Luedtke [1] http://www.mail-archive.com/lxc-users@lists.sourceforge.net/msg00198.html -- https://www.danrl.de/ GPG Key ID: 0xF8504F3E

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[libvirt-users] ANNOUNCE: ruby-libvirt bindings 0.3.0
by Chris Lalancette 13 Dec '10

13 Dec '10

All, I'm pleased to announce the release of 0.3.0 of the ruby-libvirt bindings. This release has a number of updates: * Implementation of Libvirt::open_auth, Libvirt::event_register_impl * Updated Connect class, implementing conn.compare_cpu, conn.baseline_cpu, conn.domain_event_register_any, conn.domain_event_deregister_any, conn.domain_event_register, conn.domain_event_deregister, and conn.create_domain_xml. * Updated Domain class, implementing dom.get_vcpus, dom.update_device, dom.scheduler_type, dom.scheduler_parameters, dom.scheduler_parameters=, dom.num_vcpus, dom.vcpus_flags=, and dom.qemu_monitor_command. * Updated Interface class, implementing interface.free * Many potential memory leaks have been fixed. * Many bugfixes. * Documentation update of many methods, including all of the lookup methods that were missing before. With the above list, almost all of the APIs up to and including libvirt 0.8.6 are covered. There are a few that I have not yet had time to implement; you can look at the list in the README file in the source tree to see which ones are missing. The tarballs and source RPMs are here: http://libvirt.org/ruby/download/ The git repository is here: http://libvirt.org/git/?p=ruby-libvirt.git;a=summary The documentation for all of the APIs are here: http://libvirt.org/ruby/api/index.html I've uploaded some examples on how to use the bindings: http://libvirt.org/ruby/documentation.html I've also pushed a new gem to rubygems.org; you should be able to use 'gem install ruby-libvirt' (if you haven't installed them before) or 'gem update ruby-libvirt' (if you have them installed already). If you have time, and are interested in the bindings, please give these new ones a whirl and let me know if they work for you. Note that release 0.3.0 is intended to be fully backwards compatible with release 0.2.0 and 0.1.0. If you find that they are not, or find any other problems with the ruby bindings, please report it to the libvirt development mailing list (and CC me) so that I can take a look at them. Thanks, -- Chris Lalancette

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[libvirt-users] error: Failed to disconnect from the hypervisor, 1 leaked reference(s)
by Albert Hopkins 12 Dec '10

12 Dec '10

I've been getting this error ever since upgrading to libvirt 0.8.6. It happens when i use "virsh console <domain>" and then manually shut down from within the virtual serial console. Is anyone else experiencing this? -a

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[libvirt-users] Create VMWare ESXi domain via virsh error(error: this function is not supported by the connection driver: virDomainCreateXML)
by mop amg 06 Dec '10

06 Dec '10

Hi, Dear Mr/Mrs. I have two questions ask for help: my virt-manager and libvirt version is : linux-vaan:~ # rpm -q libvirt libvirt-0.8.5-1.2.i586 linux-vaan:~ # uname -a Linux linux-vaan 2.6.34-12-desktop #1 SMP PREEMPT 2010-06-29 02:39:08 +0200 i686 i386 GNU/Linux linux-vaan:~ # rpm -q virt-manager virt-manager-0.8.5-3.1.i586 linux-vaan:~ # cat /etc/SuSE-release openSUSE 11.3 (i586) VERSION = 11.3 virsh # version Compiled against library: libvir 0.8.5 Using library: libvir 0.8.5 Using API: ESX 0.8.5 Running hypervisor: ESX 4.1.0 *question 1 : * When I try to create a vmware esxi domain from virsh like this : create --file /work/dom1.x there is a error message : error: Failed to create domain from /work/dom1.xml error: this function is not supported by the connection driver: virDomainCreateXML it seems dosen't support create esxi domain, but the http://libvirt.org/hvsupport.html show that is supported after ≥ 0.7.0 or create via virt-install linux-vaan:~ # virt-install --connect=esx:// root(a)192.168.8.162/?no_verify=1 -n rhel5 -r 512 --vcpus=1 --nodisks bridge=vmk0 --network bridge=vmk0 --pxe Enter root's password for 192.168.8.162: Starting install... ERROR this function is not supported by the connection driver: virDomainCreateXML how to fix it ? *dom1.xml* <domain type='vmware'> <name>dom1</name> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='i686'>hvm</type> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <disk type='file' device='disk'> <source file='[datastore1] rhel5/rhel5_2.vmdk'/> <target dev='sda' bus='scsi'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <controller type='scsi' index='0' model='lsilogic'/> <interface type='bridge'> <mac address='00:0c:29:51:f1:1c'/> <source bridge='VM Network'/> </interface> </devices> </domain> *question 2:* vol-clone failed virsh # vol-clone --pool datastore1 rhel5/rhel5.vmdk rhel5/rhel5_2.vmdk error: Failed to clone vol from rhel5/rhel5.vmdk error: this function is not supported by the connection driver: virStorageVolCreateXMLFrom thanks for help! best regards!

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[libvirt-users] How to set image format to 'qcow2'
by 姜晓东 05 Dec '10

05 Dec '10

Hi, all My xml 'dom1.xml' is as following: <domain type='kvm' id='1'> <name>kvm-xp</name> <description>xp kvm</description> <memory>524288</memory> <currentMemory>524288</currentMemory> <os> <type>hvm</type>  <boot dev="hd"/> </os> <devices> <disk type='file'> <source file='/home/eucalyptus/imgs/xp.img'/> <target dev='hda' bus='ide'/> </disk> <driver name='qemu' type='qcow2'/>   <graphics type='vnc' port='5904'/> </devices> </domain> In this xml file, I don't know how to set disk file format to 'qcow2'. When I create domain using this command: virsh create dom1.xml I cannot boot the image file. The log file /var/log/libvirt/qemu/kvm-xp.log is as following: LC_ALL=C PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.3 HOME=/root USER=root QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc -m 512 -smp 1 -name kvm-xp -uuid a8cbae31-59a0-0bc5-4416-65ba63aa4231 -monitor unix:/var/lib/libvirt/qemu/kvm-xp.monitor,server,nowait -no-acpi -boot c -drive file=/home/eucalyptus/imgs/xp.img,if=ide,bus=0,unit=0,format=raw -net none -serial none -parallel none -usb -vnc 127.0.0.1:4 -vga cirrus -balloon virtio I don't know how to set format argument to 'qcow2' ---------------- Xiaodong Jiang jxd431(a)gmail.com

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[libvirt-users] added second virtio-disk: disk order detected wrong
by Stefan G. Weichinger 03 Dec '10

03 Dec '10

Greets, I am unsure if it's a linux- or libvirt-issue: I added a 2nd virtio-disk to a kvm-based VM. The xml shows a correct "target": # first disk vda <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/mnt/r0/vm1_vda-clone.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> # second disk vdb <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/mnt/r0/www3_var.img'/> <target dev='vdb' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </disk> The VM contains Gentoo Linux, grub comes up fine, but then it flips the devices: The unpartitioned new disk is vda, therefore there is no root-fs etc ... I know my way to fix this via Live-CD or so, but I would really like to understand what happened! I'd like to keep vda as root etc. Could someone explain? libvirt-0.8.6 and qemu-kvm-0.13.0-r2 on a gentoo-host, btw. Thanks, Stefan

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[libvirt-users] pool and VM disk/image connection
by Zdenek Styblik 29 Nov '10

29 Nov '10

Dear list, I had a need to migrate pool resp. images in pool from /some/where/ to /some/where/else/. To my surprise, I just found out editing pool wasn't enough as each and every VM has full path to disk image not just "link" or "connection" to pool. I don't want to say this is bug or wrong doing; I don't want to say it isn't my fault, because it is and I should have study more carefully. What I'm asking for is an explanation of connection between images in pool, pool and VMs (or something like that). Just 1+1=? You see, my expectation was just to edit pool and it's all going to work-out. It didn't :) Thank you, Zdenek -- Zdenek Styblik Net/Linux admin OS TurnovFree.net email: stybla(a)turnovfree.net jabber: stybla(a)jabber.turnovfree.net

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[libvirt-users] Anyone knows when is the next release for libvirt java bindings?
by Ravi Pawar 25 Nov '10

25 Nov '10

-- Thanks & Regards Ravi Pawar

1 1

[libvirt-users] libvirt filters
by Anton Gorlov 22 Nov '10

22 Nov '10

I used filters like clean-traffic. The filters are working, but I can not see the rules in iptables -L. How can I look through the rules?

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[libvirt-users] libvirt dns-masq, enlarge max lease time?
by Денис Барышев 21 Nov '10

21 Nov '10

Hello! Is there any way conrol dnsmasq which is started by libvirt? For example, i want to enlarge max lease time. Thanks.

1 0

[libvirt-users] libvirtd & dnsmasq
by Mark Foster 20 Nov '10

20 Nov '10

libvirtd is starting dnsmasq! This is on RHEL5.5 I don't see it mentioned in /etc/init.d/libvirtd or /etc/libvirt/* or /etc/sysconfig/libvirtd 4337 ? S 0:00 /usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --listen-address 192.168.122.1 --except-interface lo --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-lease-max=253 How can I properly disable this funcationality? (I'm running dnsmasq for other purposes on the host, and the libvirtd incantation conflicts). Thanks. -- Mark D. Foster <mark(a)foster.cc> http://mark.foster.cc/ | http://www.freegeekseattle.org/

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[libvirt-users] migration failure
by Mark Foster 19 Nov '10

19 Nov '10

I'm setting up to do live migrations. Running KVM and libvirt on Ubuntu 10.04.1 Guest vhsot23 has qcow2 on NFS share, accessible to both vhost23 and 24 /net/fs11/srv/customer/nfs/kvm/mem52.img root@vhost23:~# virsh migrate mem52 qemu+ssh://vhost24/system At this point, it just sits there. virsh list on both vhost systems show mem52 in a paused state. I check /var/log/libvirt/qemu/mem52.log on the target system vhost24 it states... qemu: warning: error while loading state for instance 0x0 of device 'ram' Further, if I do virsh destroy mem52 on the target it cleans up fine, but after Ctrl-C on the source, mem52 cannot be managed. root@vhost23:~# virsh destroy mem52 error: Failed to destroy domain mem52 error: Timed out during operation: cannot acquire state change lock Only way to recover is manually kill the kvm process id for that guest. Please help me get this to work. -- Mark D. Foster <mark(a)foster.cc> http://mark.foster.cc/ | http://www.freegeekseattle.org/

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