February 2010 - Users - libvirt List Archives

[libvirt-users] [libvirt] [LXC] Tyring to locate livbvirt operations for LXC relocation
by Avi Weit 11 Apr '10

11 Apr '10

Hello, I am searching for the libvirt operations for relocating LXC (system or application) containers. LXC relocation mechanism is done by checkpoint / restart. I went over libvirt API documentation and found the following methods: virDomainSave that receives a domain and path to state file. The method saves domain's memory contents into a disk file. virDomainRestore that receives a domain and path to state file. The method restores the domain from the state file created by save operation. Are these the proper methods to use for LXC relocation? I assume I can also use the corresponding operations via virsh (save / restore).. >From looking into lxcDriver object (defined under /src/lxc/xlc_driver.c in libvirt server source) I can see that NULLs are set in save and restore methods. Does that mean that there is no support for saving and restoring Linux containers? Is there a libvirt patch beyond the kernel patch that needs to be applied? I am using libvirt 0.7.5 and kernel 2.6.31 /* Function Tables */ static virDriver lxcDriver = { VIR_DRV_LXC, /* the number virDrvNo */ "LXC", /* the name of the driver */ lxcOpen, /* open */ lxcClose, /* close */ NULL, /* supports_feature */ NULL, /* type */ lxcVersion, /* version */ NULL, /* libvirtVersion (impl. in libvirt.c) */ virGetHostname, /* getHostname */ NULL, /* getMaxVcpus */ nodeGetInfo, /* nodeGetInfo */ lxcGetCapabilities, /* getCapabilities */ lxcListDomains, /* listDomains */ lxcNumDomains, /* numOfDomains */ lxcDomainCreateAndStart, /* domainCreateXML */ lxcDomainLookupByID, /* domainLookupByID */ lxcDomainLookupByUUID, /* domainLookupByUUID */ lxcDomainLookupByName, /* domainLookupByName */ lxcDomainSuspend, /* domainSuspend */ lxcDomainResume, /* domainResume */ lxcDomainShutdown, /* domainShutdown */ NULL, /* domainSave */ NULL, /* domainRestore */ NULL, /* domainMigratePrepare */ NULL, /* domainMigratePerform */ NULL, /* domainMigrateFinish */ ... ... Thanks, - Avi

2 2

[libvirt-users] location of network xml files
by carlos campderrós 01 Mar '10

01 Mar '10

Hello, On Ubuntu 9.04 (libvirt 0.6.1-0ubuntu5.1) I have 2 different network files: root@sauron:~# ls -l `locate default.xml` lrwxrwxrwx 1 root root 14 2010-02-13 12:34 /etc/libvirt/qemu/networks/autostart/default.xml -> ../default.xml -rw-r--r-- 1 root root 373 2010-03-01 00:02 /etc/libvirt/qemu/networks/default.xml -rw------- 1 root root 319 2010-03-01 00:04 /var/lib/libvirt/network/default.xml Modifications I do on the /etc file are ignored (I'd like to modify the dhcp range and set fixed ips to VM mac addresses). I don't understand why this file is there, as it seems ignored by everything, and why the autostart symlink points to it instead of the /var/lib/libvirt one. Is it reasonable to symlink (or hardlink if possible) one file to the other? Or to remove the /etc file and point the autostart to the /var file? Also, does the autostart do something? because it's pointing to the ignored file. thanks, carlos. -- Si no puedes deslumbrar con tu sabiduría, desconcierta con tus gilipolleces

2 4

[libvirt-users] Migration error
by zorgman 26 Feb '10

26 Feb '10

Hi, I'm trying to migrate a VM from one libvirt 0.7.6-1 (qemu-kvm 0.11.1+dfsg-1) to another libvirt 0.7.6-2 (qemu-kvm 0.11.1+dfsg-1) connected with SSH , i have followed pre requite (same shared, same path, same network conf ...) . But when i migrate , i have following error : operation failed: /migration to 'tcp:x.x.x.x:49157' failed: migration failed DETAIL : Unable to migrate guest: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/migrate.py", line 457, in _async_migrate vm.migrate(dstconn, migrate_uri, rate, live, secure) File "/usr/share/virt-manager/virtManager/domain.py", line 1272, in migrate self._backend.migrate(destconn.vmm, flags, newname, interface, rate) File "/usr/lib/python2.5/site-packages/libvirt.py", line 429, in migrate if ret is None:raise libvirtError('virDomainMigrate() failed', dom=self) libvirtError: operation failed: migration to 'tcp:portable.artis.int:49157' failed: migration failed /on the destination libvirt i can see in syslog : /Feb 26 11:16:25 portable libvirtd: 11:16:25.281: error : qemudDomainGetInfo:3744 : Domain not found: no domain with matching uuid '71c22b3b-4c93-80bd-8387-2b502887c2aa' Feb 26 11:16:25 portable libvirtd: 11:16:25.283: error : qemudDomainGetInfo:3744 : Domain not found: no domain with matching uuid '71c22b3b-4c93-80bd-8387-2b502887c2aa' Feb 26 11:16:25 portable kernel: [ 3022.213730] virbr0: port 1(vnet0) entering disabled state Feb 26 11:16:25 portable kernel: [ 3022.228917] device vnet0 left promiscuous mode Feb 26 11:16:25 portable kernel: [ 3022.228925] virbr0: port 1(vnet0) entering disabled state Feb 26 11:16:25 portable NetworkManager: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/vnet0, iface: vnet0) Feb 26 11:17:01 portable /USR/SBIN/CRON[2606]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Feb 26 11:24:47 portable NetworkManager: <WARN> nm_signal_handler(): Caught signal 15, shutting down normally. Feb 26 11:24:47 portable NetworkManager: <info> (wlan0): taking down device. Feb 26 11:24:47 portable NetworkManager: <info> exiting (success) /in the destination libvirt vm log i can see the cmd running by migration: /LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/ QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.11 -enable-kvm -m 256 -smp 1 -name testmigration -uuid 71c22b3b-4c93-80bd-8387-2b502887c2aa -monitor unix:/var/lib/libvirt/qemu/testmigration.monitor,server,nowait -boot c -drive file=/mnt/testmigration.img,if=virtio,boot=on,format=qcow2 -drive if=ide,media=cdrom,bus=1,unit=0,format=raw -net nic,macaddr=52:54:00:7a:a4:98,vlan=0,model=virtio,name=net0 -net tap,fd=50,vlan=0,name=hostnet0 -serial pty -parallel none -usb -vnc 127.0.0.1:0 -k fr -vga cirrus -incoming tcp:0.0.0.0:49156 -balloon virtio/ I'm using Debian. The problem occure online as offline mod.

1 1

[libvirt-users] How to find IP address that is in use?
by Neil Aggarwal 25 Feb '10

25 Feb '10

Hello: When I try to start a VPS, it tells me the IP address is already in use by another system. How do I find out what guest is using an IP address? Is there a virsh command to list the IP addresses that are in use? Thanks, Neil -- Neil Aggarwal, (281)846-8957 FREE trial: cPanel VPS with unmetered bandwidth http://UnmeteredVPS.net/cpanel

1 0

[libvirt-users] /dev/pts linking option?
by Jon Masters 24 Feb '10

24 Feb '10

Folks, Does anyone know whether libvirt provides a means for me to guarantee a persistent link for my guest's virtual serial console? I need to have a consistent mapping (for example, a symlink that always points to the correct /dev/pts entry) so I can automate kgdb hookup on boot. Jon.

2 2

[libvirt-users] live migration not working correctly
by Daniel Bidwell 23 Feb '10

23 Feb '10

I have two servers running Ubuntu 9.10, with shared disk from ISCSI SAN and OCFS2, identical network configurations, shared ssh keys, and pki keys. My vm will boot from either machine and run correctly. When I attempt to do a live migration with "migrate --live base32 qemu +[ssh/tcp]://vm1/system" it initiates the vm on the other server, but leaves the vm on the current server in the "running" state and the vm on the other server in the "paused" state. It never finishes the migration. I get the same results for doing a migration via ssh as I do with tcp/pki. I have turned up the logging to debug, but don't see anything in the log to indicate an error or any reason for it to not complete. At least not anything obvious. The Ubuntu server software is using kvm/qemu version 84. I have been through the ubuntu and qemu forums/wiki/documentation. Anyone have any suggestions of other things to look for? -- Daniel R. Bidwell | bidwell(a)andrews.edu Andrews University | Information Technology Services If two always agree, one of them is unnecessary "Friends don't let friends do DOS" "In theory, theory and practice are the same. In practice, however, they are not."

1 0

[libvirt-users] Digium TDM410 passthrought to KVM VM trixbox
by raincatsdogs＠me.com 18 Feb '10

18 Feb '10

Hello, my name is Paul. I need to map a PCI device for a virtual machine. The Linux distribution is Ubuntu server 9.10, infrastructure virtualization is "KVM". The virtual machine will install trixbox. To map the PCI card is a "Digium TDM410p. There currently, KVM hosts a virtual machine that runs smoothly without any problems. In fact, this virtual machine is running Openfiler and has direct access to 2 physical disks installed on the server. Creating a new virtual machine can not connect the Digium card, directly to the virtual machine.I tried in 2 ways. 1. Directly editing the XML file for the virtual machine with the parameters indicated in the documentation: ... <devices> <hostdev mode='subsystem' type='pci'> <source> <address bus='0x01' slot='0x00' function='0x0'/> <----- this is my personal configuration </ source> </ hostdev> </ devices> ... 2. Adding the PCI card via virt-manager In both cases, the virtual machine will not start. Virt-manager returns this error: "Error starting domain/ monitor socket did not show up./ Connection refused" "Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 493, in run_domain vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 558, in startup self.vm.create() File "/usr/lib/python2.6/dist-packages/libvirt.py", line 293, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: monitor socket did not show up.: Connection refused" Can someone kindly help me? Thanks

1 0

[libvirt-users] OpenVZ and Libvirt XML configuration
by Danel Ahman 18 Feb '10

18 Feb '10

Hello Could someone give any hints or explain - how to set OpenVZ container hostname and diskspace limits in Libvirt XML configuration file to create the new container through Libvirt. Danel

1 0

[libvirt-users] Check out my photos on Facebook
by Anuj Rampal 18 Feb '10

18 Feb '10

Hi Libvirt-users, I set up a Facebook profile where I can post my pictures, videos and events and I want to add you as a friend so you can see it. First, you need to join Facebook! Once you join, you can also create your own profile. Thanks, Anuj To sign up for Facebook, follow the link below: http://www.facebook.com/p.php?i=100000789786934&k=Z6E3Y5PS3YVAVA1JPB63QTVZS… Already have an account? Add this email address to your account http://www.facebook.com/n/?merge_accounts.php&e=libvirt-users@redhat.com&c=… was invited to join Facebook by Anuj Rampal. If you do not wish to receive this type of email from Facebook in the future, please click on the link below to unsubscribe. http://www.facebook.com/o.php?k=cf19ea&u=100000790117024&mid=1e70efbG5af33f… Facebook's offices are located at 1601 S. California Ave., Palo Alto, CA 94304.

1 0

[libvirt-users] build libvirt on Mac OSX 10.6
by Camilo Aguilar 16 Feb '10

16 Feb '10

Hi, Anybody know how to build libvirt on Mac OSX 10.6 ?

3 3