- Users - libvirt List Archives

[libvirt-users] Problems migrating xen domains
by Lorenzo Milesi 18 Jun '11

18 Jun '11

Hi. I've set up a cluster with two Debian 6 nodes, running Xen 4 and libvirt 0.9 (from backports). My VMs run over a DRBD resource, to allow live migration between the nodes. I've successfully tried live migration using xm migrate, now I'd like to make it work using virsh, but cannot make it. Here's the error I'm getting: # virsh migrate efw xen+ssh://10.22.22.152/ error: POST operation failed: xend_post: error from xen daemon: (xend.err "can't connect: (-2, 'Name or service not known')") As said, xm migrate worked at first, so xend should be set up correctly. I've done several searches but with no luck. What could be the problem? thanks Relevant configs: # cat /etc/xen/xend-config.sxp |grep -v ^#|grep -v ^$ (xend-http-server yes) (xend-unix-server yes) (xend-relocation-server yes) (xend-port 8000) (xend-relocation-port 8002) (vif-script vif-bridge) (dom0-min-mem 196) (enable-dom0-ballooning yes) (total_available_memory 0) (dom0-cpus 0) (vncpasswd '') # env|grep VIRSH_DEFAULT_CONNECT_URI VIRSH_DEFAULT_CONNECT_URI=xen:/// root@xensrv01:~# virsh version Compiled against library: libvir 0.9.0 Using library: libvir 0.9.0 Using API: Xen 3.0.1 Running hypervisor: Xen 4.0.0

1 0

[libvirt-users] basic network setup
by Jerry Worley 17 Jun '11

17 Jun '11

I am setting up a network with 2 guests, each on different subnets. The physical machine has 2 NICS, one on each subnet. I want the physical and guest machines to have IP addresses with no NAT, in their respective subnets, and then I want a separate subnet where the 2 guests can connect directly to each other. Can somebody explain conceptually the best way to use physical adapters, bridges, virtual bridges, virtual networks to accomplish this.

1 0

[libvirt-users] Virsh Console - Changes in guest
by Abhishek Gupta 17 Jun '11

17 Jun '11

Hello Virsh Console was not working on my setup. (also it required ctrl + shift + ] instead of ctrl+alt+] for interrupt) But after I create a file /etc/init/ttyS0.conf # ttyS0 - getty # # This service maintains a getty on ttyS0 from the point the system is # started until it is shut down again. start on stopped rc RUNLEVEL=[2345] stop on runlevel [!2345] respawn exec /sbin/getty -L 38400 ttyS0 vt102 Reload libvirt-bin, and restart the vm the console starts working. Is there any other way of doing this without the need of changing the guest files and independent of guest OS? I am using libvirt version 0.8.8. -- Abhishek abhishekgupta92.info

1 0

[libvirt-users] 2 virsh consoles on the same hypervisor causes conflicts
by David Lane 16 Jun '11

16 Jun '11

Anyone encountered this? Anyone have a solution? Seeing it in Fedora15 with KVM If 2 consoles are opened to the same guest from the hypervisor they will interfere with each other. keystrokes are lost and returned information is displayed on either virsh console instances randomly. Both consoles are rendered unusable. Thanks, DAVID

3 2

[libvirt-users] Virtual switches support (Openvswitch, VDE,...)
by Jérémie Tarot 16 Jun '11

16 Jun '11

Hi, IIR/UC there have been a couple of discussions lately about possible evolution of libvirt's network management features to eventually support more kinds of virtual networking technologies like Openvswitch, VDE,... Could a kind and informed soul keep us on touch with progress in the field ? Thank you very much in advance PS: I wish this will be available before/for 1.0 release...

2 2

Re: [libvirt-users] [Qemu-devel] Qcow2
by Stefan Hajnoczi 16 Jun '11

16 Jun '11

On Wed, May 18, 2011 at 5:18 PM, <arun.sasi1(a)wipro.com> wrote: > Hello Stefan, > > > > Thank you very much for considering my issue... > > > > Here is My problem... > > > > 1) I have 4 VM`s Running on Base server. > > 2) Base server is having 15GB RAM. > > 3) I can start all VM`s apart from my file server. > > 4) File server is having OS image and 1.2TB QCOW2 Image. > > 5) When I remove 1.2TB from xml file (vdb.img) I can start my server but > Data partition is null becase I have not added 1.2TB in XML. > > 6) Command I am using virsh start <Domain> > > 7) Even through virt-manager also I am not able to start the VM. Attached is > the error message Unfortunately the message gives no details: "libvirtError: internal error unable to start guest:" > 8) Keep on trying adding and removing and defining the XML after 2 Hrs I am > able to start. What did you change that made it work? > 9) Operating system Ubuntu 9.04 > > 10) I have 3 location file server having the same issue… even all file > servers are same configuration… Libvirt keeps log files for each VM under /var/log/libvirt/qemu/<domain>.log. You might find more detailed error information in that file and it will at least contain the qemu-kvm command-line used to launch the domain. Please take a look at that file and post the lines surrounding the error, especially the "starting up" log line. Have you verified that the .qcow2 image file is accessible, ownership and permissions should be the same as the image files of your other domains. Stefan > -----Original Message----- > From: Stefan Hajnoczi [mailto:stefanha@linux.vnet.ibm.com] > Sent: Wednesday, May 18, 2011 9:28 PM > To: Arun Sasi V (WI01 - Manage IT) > Subject: Re: Qcow2 > > > > On Wed, May 18, 2011 at 07:30:05PM +0530, arun.sasi1(a)wipro.com wrote: > >> The Guest VM which is larger example 1.2TB is not starting after the > >> base server reboot... Pleae help what needs to be do in this situation. > > > > You have not provided information on what is happening. Are you getting > > an error message during boot from the 1.2TB guest? Is the 1.2TB guest > > even being autostarted (use "virsh autostart <domain>" to enable > > autostart on a domain)? > > > > Please send support questions like this to qemu-devel(a)nongnu.org in the > > future. That way other people in the QEMU community can help too. > > > > Stefan > > Please do not print this email unless it is absolutely necessary. > > The information contained in this electronic message and any attachments to > this message are intended for the exclusive use of the addressee(s) and may > contain proprietary, confidential or privileged information. If you are not > the intended recipient, you should not disseminate, distribute or copy this > e-mail. Please notify the sender immediately and destroy all copies of this > message and any attachments. > > WARNING: Computer viruses can be transmitted via email. The recipient should > check this email and any attachments for the presence of viruses. The > company accepts no liability for any damage caused by any virus transmitted > by this email. > > www.wipro.com

3 12

[libvirt-users] libvir: QEMU error : cannot set ownership
by Ali Shoker 16 Jun '11

16 Jun '11

Hello everybody, I installed eucalyptus on ubuntu10, basic configuration . Everything is ok untill I start the instances, the disk is being created but it terminates soon. Environment: NFS , KVM, ubuntu10 x64, Euca on 2 machines (wc sc cc clc on one machine, and nc on another). libvirtd (libvirt) 0.7.5 QEMU PC emulator version 0.12.3 (qemu-kvm-0.12.3), Copyright (c) 2003-2008 Fabrice Bellard. Logs: /var/log/eucalyptus/nc.log: [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] doStartNetwork() invoked [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] StartNetwork(): SUCCESS return from vnetStartNetwork 0 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] StartNetwork(): done [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] doRunInstance() invoked (id=i-4C9D08C3 cores=2 disk=10 memory=512) [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] image=emi-DDBD105C at http://10.1.1.2:8773/services/Walrus/image-store-1308215076/image.manifest.… [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] krnel=eki-F41F10E3 at http://10.1.1.2:8773/services/Walrus/image-store-1308215076/kernel.manifest… [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] rmdsk=eri-08841148 at http://10.1.1.2:8773/services/Walrus/image-store-1308215076/ramdisk.manifes… [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] vlan=10 priMAC=d0:0d:4C:9D:08:C3 pubMAC=d0:0d:4C:9D:08:C3 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] network started for instance i-4C9D08C3 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] retrieving images for instance i-4C9D08C3 (disk limit=10240MB)... [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] verifying cached file in /var/lib/eucalyptus/instances//eucalyptus/cache/eki-F41F10E3/kernel... [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] walrus_request(): downloading /tmp/walrus-digest-3D4AKY [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] from http://10.1.1.2:8773/services/Walrus/image-store-1308215076/kernel.manifest… [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] walrus_request(): writing GET output to /tmp/walrus-digest-3D4AKY [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] walrus_request(): wrote 3479 bytes in 3 writes [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] walrus_request(): saved image in /tmp/walrus-digest-3D4AKY [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] vrun(): [cp -a /var/lib/eucalyptus/instances//eucalyptus/cache/eki-F41F10E3/kernel /var/lib/eucalyptus/instances//admin/i-4C9D08C3/ker nel] [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] verifying cached file in /var/lib/eucalyptus/instances//eucalyptus/cache/eri-08841148/ramdisk... [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] walrus_request(): downloading /tmp/walrus-digest-sVEVa4 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] from http://10.1.1.2:8773/services/Walrus/image-store-1308215076/ramdisk.manifes… [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] walrus_request(): writing GET output to /tmp/walrus-digest-sVEVa4 [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] walrus_request(): wrote 3482 bytes in 3 writes [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] walrus_request(): saved image in /tmp/walrus-digest-sVEVa4 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] vrun(): [cp -a /var/lib/eucalyptus/instances//eucalyptus/cache/eri-08841148/ramdisk /var/lib/eucalyptus/instances//admin/i-4C9D08C3/ramdisk] [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] verifying cached file in /var/lib/eucalyptus/instances//eucalyptus/cache/emi-DDBD105C/disk... [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] walrus_request(): downloading /tmp/walrus-digest-RQEzI9 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] from http://10.1.1.2:8773/services/Walrus/image-store-1308215076/image.manifest.… [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] walrus_request(): writing GET output to /tmp/walrus-digest-RQEzI9 [Thu Jun 16 03:54:31 2011][003755][EUCADEBUG ] walrus_request(): wrote 5887 bytes in 5 writes [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] walrus_request(): saved image in /tmp/walrus-digest-RQEzI9 [Thu Jun 16 03:54:31 2011][003755][EUCAINFO ] vrun(): [cp -a /var/lib/eucalyptus/instances//eucalyptus/cache/emi-DDBD105C/disk /var/lib/eucalyptus/instances//admin/i-4C9D08C3/disk] [Thu Jun 16 03:54:32 2011][003755][EUCAINFO ] vrun(): [//usr/lib/eucalyptus/euca_rootwrap //usr/share/eucalyptus/partition2disk /var/lib/eucalyptus/instances//admin/i-4C9D08C3/disk 512 8280] [Thu Jun 16 03:54:37 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:54:37 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:54:43 2011][003755][EUCAINFO ] preparing images for instance i-4C9D08C3... [Thu Jun 16 03:54:43 2011][003755][EUCAINFO ] adding key/tmp/sckey.uUHVTI to the root file system at /var/lib/eucalyptus/instances//admin/i-4C9D08C3/disk using (//usr/lib/eucalyptus/euca_rootwrap //usr/share/eucalyptus/add_key.pl//usr/lib/eucalyptus/euca_mountwrap) [Thu Jun 16 03:54:43 2011][003755][EUCAINFO ] vrun(): [//usr/lib/eucalyptus/euca_rootwrap //usr/share/eucalyptus/add_key.pl//usr/lib/eucalyptus/euca_mountwrap 32256 /var/lib/eucalyptus/instances//admin/i-4C9D08C3/disk /tmp/sckey.uUHVTI] [Thu Jun 16 03:54:43 2011][003755][EUCADEBUG ] system_output(): [//usr/lib/eucalyptus/euca_rootwrap //usr/share/eucalyptus/gen_kvm_libvirt_xml --ramdisk --ephemeral] [Thu Jun 16 03:54:43 2011][003755][EUCAINFO ] currently running/booting: i-4C9D08C3 [Thu Jun 16 03:54:43 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:54:43 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:54:49 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:54:49 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:54:55 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:54:55 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:55:01 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:55:01 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:55:07 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:55:07 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:55:13 2011][003755][EUCAERROR ] libvirt: monitor socket did not show up.: No such file or directory (code=38) [Thu Jun 16 03:55:13 2011][003755][EUCAFATAL ] hypervisor failed to start domain [Thu Jun 16 03:55:13 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:55:13 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:55:15 2011][003755][EUCAERROR ] libvirt: Domain not found: no domain with matching name 'i-4C9D08C3' (code=42) [Thu Jun 16 03:55:15 2011][003755][EUCAINFO ] vrun(): [rm -rf /var/lib/eucalyptus/instances//admin/i-4C9D08C3/] [Thu Jun 16 03:55:15 2011][003755][EUCAINFO ] stopping the network (vlan=10) [Thu Jun 16 03:55:19 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:55:19 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:55:25 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:55:25 2011][003755][EUCADEBUG ] doDescribeInstances() invoked [Thu Jun 16 03:55:26 2011][003755][EUCAINFO ] doTerminateInstance() invoked (id=i-4C9D08C3) [Thu Jun 16 03:55:26 2011][003755][EUCAERROR ] libvirt: Domain not found: no domain with matching name 'i-4C9D08C3' (code=42) [Thu Jun 16 03:55:26 2011][003755][EUCAWARN ] warning: domain i-4C9D08C3 to be terminated not running on hypervisor [Thu Jun 16 03:55:31 2011][003755][EUCADEBUG ] doDescribeResource() invoked [Thu Jun 16 03:55:31 2011][003755][EUCADEBUG ] doDescribeInstances() invoked /var/log/libvirt/qemu/i-4C9D08C3.log: LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 512 -smp 2 -name i-3D4B085B -uuid 68e17542-66cb-0240-81f5-d71c935e5a5e -nographic -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/i-3D4B085B.monitor,server,nowait -monitor chardev:monitor -boot c -kernel /var/lib/eucalyptus/instances//admin/i-3D4B085B/kernel -initrd /var/lib/eucalyptus/instances//admin/i-3D4B085B/ramdisk -append root=/dev/sda1 console=ttyS0 -drive file=/var/lib/eucalyptus/instances//admin/i-3D4B085B/disk,if=scsi,index=0,boot=on,format=raw -net nic,macaddr=d0:0d:3d:4b:08:5b,vlan=0,model=e1000,name=e1000.0 -net tap,fd=44,vlan=0,name=tap.0 -chardev file,id=serial0,path=/var/lib/eucalyptus/instances//admin/i-3D4B085B/console.log -serial chardev:serial0 -parallel none -usb libvir: QEMU error : cannot set ownership on /var/lib/eucalyptus/instances//admin/i-3D4B085B/kernel: Permission denied more info: qemu user/group is eucalyptus/root I noticed that soem process (libvirt or qemu) is changing the ownership before termination: Before and after: 1. ll /var/lib/eucalyptus/instances//admin/i-3D4B085B/ 2. total 715912K 3. -rw-r--r-- 1 eucalyptus eucalyptus 10767826944 2011-06-16 04:01 disk 4. -rw------- 1 eucalyptus eucalyptus 571064 2011-06-16 04:01 instance-checkpoint 5. -rw-r--r-- 1 eucalyptus eucalyptus 4159008 2011-06-16 03:09 kernel 6. -rw-r--r-- 1 eucalyptus eucalyptus 933 2011-06-16 04:01 libvirt.xml 7. -rw-r--r-- 1 eucalyptus eucalyptus 3899035 2011-06-16 03:09 ramdisk 8. 9. ll /var/lib/eucalyptus/instances//admin/i-3D4B085B/ 10. total 715912K 11. -rw-r--r-- 1 root root 10767826944 2011-06-16 04:01 disk 12. -rw------- 1 eucalyptus eucalyptus 571064 2011-06-16 04:01 instance-checkpoint 13. -rw-r--r-- 1 root root 4159008 2011-06-16 03:09 kernel 14. -rw-r--r-- 1 eucalyptus eucalyptus 933 2011-06-16 04:01 libvirt.xml 15. -rw-r--r-- 1 root root 3899035 2011-06-16 03:09 ramdisk additional info: ls -al /var/lib/eucalyptus total 24K drwxr-xr-x 5 eucalyptus eucalyptus 4096 2011-06-16 03:34 . drwxr-xr-x 43 root root 4096 2011-06-16 02:29 .. -rw------- 1 eucalyptus eucalyptus 16 2011-06-16 03:34 .bash_history drwx------ 2 eucalyptus eucalyptus 4096 2011-06-16 02:52 .cache lrwxrwxrwx 1 eucalyptus eucalyptus 14 2011-06-16 02:49 instances -> /mnt/instances drwx------ 2 eucalyptus eucalyptus 4096 2011-06-16 02:52 keys drwxr-xr-x 2 eucalyptus root 4096 2011-06-16 02:43 .ssh ls -al /mnt/instances total 16K drwxrwxrwx 4 eucalyptus eucalyptus 4096 2011-06-16 03:09 . drwxr-xr-x 5 eucalyptus eucalyptus 4096 2011-06-16 02:25 .. drwxr-xr-x 2 eucalyptus eucalyptus 4096 2011-06-16 04:02 admin drwxr-xr-x 3 eucalyptus eucalyptus 4096 2011-06-16 03:09 eucalyptus Is there any solution to this problem? A workaround also works. Thanks Best, Ali

1 0

[libvirt-users] request to add an application the app listing on libvirt site
by Ohad Levy 14 Jun '11

14 Jun '11

Hi, I would like to add two apps which uses libvirt the site. Ruby Objects for libvirt based on top of the native ruby binding, Virt ruby gem exposes real objects such as Host, Guest, StoragePool, Interface etc. more info at https://github.com/ohadlevy/virt Foreman - Web UI for provisioning and managing servers Among the many things foreman can do, It provides to relevant parts to libvirt: UI to list / start / stop / destroy vms UI to create a new vm as part of the provisioning process (e.g. dhcp, dns, tftp, pxe, vm, ks/preseed, puppet etc) more info at http://theforeman.org Thanks! Ohad

3 3

[libvirt-users] Difference between function Migrate and Migrate2
by Abhishek Gupta 13 Jun '11

13 Jun '11

I was reading the API reference for the libvirt, when I came across the function virDomainMigrate and virDomainMigrate2. I am unable to find the difference between the two. Can someone please tell the difference in the application of the two? -- Abhishek

2 1

[libvirt-users] Boot delay
by Jeff 13 Jun '11

13 Jun '11

Is there a method of tweaking the boot sequence of a KVM instance so that you can delay the process for X number of seconds? I don't have enough time between starting the KVM and connecting via VNC. Thanks Jeff

3 4