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[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...

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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

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[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

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[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

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[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

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[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

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[libvirt-users] libvirt-bin MOSTLY fails to create default virtual network
by m m 12 Jun '11

12 Jun '11

I have observed 3 scenarios after I reboot the host with 2 guests (which are supposed to autostart after boot/reboot of the host): 1. Default network is created but I can not ping guests. Gests don't have assigned IP address or they both have IP address 192.168.122.100. 2. Default network is not created. 3. Default netork is properly created and everything works fine. In each case guests are started and they work properly. Cases 1. and 2. happen a lot more often then case 3. My solutions: - When I restart libvirt-bin then everything is fine. - When I set 'sleep 40' in 'pre-start' section of /etc/init/libvirt-bin.conf and modify 'start on' section in the following way: start on (runlevel [2345] and net-device-up IFACE=br0) then everything works fine. However, none of the above solutions indeed solves the problem. Please, let me know if there is solution to this problem or what are your suggestions regarding this issue. **** HOST$ uname -a Linux ras 2.6.32-32-server #62-Ubuntu SMP Wed Apr 20 22:07:43 UTC 2011 x86_64 GNU/Linux GUEST1 and GUEST2 $ uname -a Linux server1-desktop 2.6.32-32-generic #62-Ubuntu SMP Wed Apr 20 21:54:21 UTC 2011 i686 GNU/Linux HOST$ libvirtd --version libvirtd (libvirt) 0.7.5 My idea was that some kernel modules sometimes are loaded before libvirt-bin starts, and sometimes libvirt-bin starts earlier, or in the middle of loading of these modules, that is why 3 scenarios can be observed. That is why I have added: cp /proc/modules /home/wsadmin2/modules1 cp /proc/modules /home/wsadmin2/modules2 to 'pre-start' and 'post-start' parts respectively of /etc/init/libvirt-bin.conf. Of course, beween execution of - pre-start part - exec /usr/sbin/libvirtd -d - post-start part other kernel modules can be loaded, so we can not be sure which additional modules in file 'modules2' were indeed loaded before libvirtd was actually started. Here are my observations: Scenatio 1. 33 (fixed) modules were logged - call them BASE MODULES. Scenatio 2. Beside BASE MODULES + the following modules were loaded: > iptable_filter 1841 0 - Live 0xffffffffa007c000 > ip_tables 18201 1 iptable_filter, Live 0xffffffffa0172000 > x_tables 22361 1 ip_tables, Live 0xffffffffa0164000 Scenatio 3. Beside BASE MODULES + the following modules were loaded: $ diff modules1 modules2 1c1,6 < iptable_filter 1841 0 - Live 0xffffffffa008b000 --- > xt_state 1490 14 - Live 0xffffffffa01ab000 > xt_tcpudp 2667 12 - Live 0xffffffffa01a5000 > nf_conntrack_ipv4 12742 14 - Live 0xffffffffa019b000 > nf_conntrack 73326 2 xt_state,nf_conntrack_ipv4, Live 0xffffffffa017d000 > nf_defrag_ipv4 1481 1 nf_conntrack_ipv4, Live 0xffffffffa0177000 > iptable_filter 1841 1 - Live 0xffffffffa008b000 3c8 < x_tables 22361 1 ip_tables, Live 0xffffffffa0162000 --- > x_tables 22361 3 xt_state,xt_tcpudp,ip_tables, Live 0xffffffffa0162000 Other observations: Scenatio 1. No errors in libvirtd.log Scenario 2. 10:06:06.980: error : networkAddIptablesRules:750 : failed to add iptables rule to allow DHCP requests from 'virbr0': Invalid argument (...) 10:06:08.630: error : qemudNetworkIfaceConnect:1445 : Failed to add tap interface to bridge 'virbr0': No such device 10:06:08.630: error : qemuAutostartDomain:584 : Failed to autostart VM 'cluster_server1': Failed to add tap interface to bridge 'virbr0': No such device 10:06:08.921: info : qemudDispatchSignalEvent:390 : Received unexpected signal 17 10:06:08.927: debug : virExecWithHook:617 : LC_ALL=C /usr/bin/kvm -help 10:06:08.938: info : qemudDispatchSignalEvent:390 : Received unexpected signal 17 10:06:09.000: error : qemudNetworkIfaceConnect:1445 : Failed to add tap interface to bridge 'virbr0': No such device 10:06:09.000: error : qemuAutostartDomain:584 : Failed to autostart VM 'cluster_server2': Failed to add tap interface to bridge 'virbr0': No such device (...) Scenatio 3. No errors in libvirtd.log I didn't see any valuable logs in /var/log/boot.log, /var/log/messages, /var/log/syslog. Please let me know if you want to see them anyway or have any suggestions right away.

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[libvirt-users] e: How to disconnect the ISO image using virsh
by Jeff 10 Jun '11

10 Jun '11

I am trying to detach an ISO from a KVM machine and I've tried both attach-disk using " " in the file path as well as the update-device option but am getting this error error: Failed to update device from /var/run/libvirt/qemu/kvmtest1.xml error: XML description for unknown device type is not well formed or invalid. I tried doing a virsh edit on the xml file to remove the source file path to the ISO, as I assume is the correct method, and then running the virsh update-device but it's not working. Can anyone advise the correct steps to detach a device from a running and/or offline domain? Additionally - anyone have any guidance on how to attach a CD device to a domain that is currently shutdown, for example, if I wanted to boot the domain to a rescue CD image? Thanks Jeff 于 2011年03月31日 15:17, Masanari Iida 写道: Somebody sent me a tips. Following command do what I wanted to do. Thanks. attach-disk guest01 " " hdc --driver file --type cdrom --mode readonly Also using "update-device" with an xml which doesn't specify the source file path will work. On Thu, Mar 31, 2011 at 3:29 PM, Masanari Iida<standby24x7 gmail com> wrote: Hello, I can attach disc ISO image to cd-rom from virsh. And I can replace the ISO image from disc1 to disc2 using the 2nd example. (example) attach-disk guest01 /root/disc1.iso hdc --driver file --type cdrom --mode readonly attach-disk guest01 /root/disc2.iso hdc --driver file --type cdrom --mode readonly My question is, how can I disconnect the image from the cdrom drive using virsh. Because, if I try to detach-disk hdc, I got following errors. virsh # detach-disk guest01 hdc error: Failed to detach disk error: this function is not supported by the connection driver: This type of device cannot be hot unplugged What I can do is possible from virt-manager's "Disconnect" button, (next to source path: line) from Hardware's TAB, Disk hdc screen. I want to do this from virsh. OS: RHEL5.6 libvirt-0.8.2-15.el5_6.1 is used. Regards, Masanari Iida _______________________________________________ libvirt-users mailing list libvirt-users redhat com https://www.redhat.com/mailman/listinfo/libvirt-users

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[libvirt-users] stuck after upgrade
by Julian Cerruti 10 Jun '11

10 Jun '11

Hi all, We're completely stuck helpless with our CentOS system which we've been using as a VM server. After an unanticipated system upgrade, we can't get virsh or virt-manager to connect to libvirt anymore. It gets completely stuck during startup, trying to connect. One of the suspicious things we've seen is the following: [root@ana libvirt]# netstat | grep /var/run/libvirt/libvirt-sock unix 3 [ ] STREAM CONNECTING 0 /var/run/libvirt/libvirt-sock unix 3 [ ] STREAM CONNECTING 0 /var/run/libvirt/libvirt-sock unix 3 [ ] STREAM CONNECTING 0 /var/run/libvirt/libvirt-sock unix 3 [ ] STREAM CONNECTING 0 /var/run/libvirt/libvirt-sock unix 3 [ ] STREAM CONNECTING 0 /var/run/libvirt/libvirt-sock .... I'm not adding more information here because there is so much we've tried that I wouldn't know where to start. I would be happy to provide any info that would be useful to solve this issue. Any hint or help would be greatly appreciated. Thanks! Julian

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Re: [libvirt-users] libvirt-users Digest, Vol 18, Issue 11
by m m 10 Jun '11

10 Jun '11

I have attached all the logs (/var/log/dmesg, /var/log/libvirtd.log, /var/log/messages, /var/log/syslog, /var/log/boot.log and info about loaded modules /proc/modules) regarding scenatios1,2,3 (please see the README file for simple explanation what is there). By the way, I have installed only dnsmasq-bin (and not dnsmasq). Have a nice day 2011/6/8 <libvirt-users-request(a)redhat.com> > Send libvirt-users mailing list submissions to > libvirt-users(a)redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/libvirt-users > or, via email, send a message with subject or body 'help' to > libvirt-users-request(a)redhat.com > > You can reach the person managing the list at > libvirt-users-owner(a)redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of libvirt-users digest..." > > > Today's Topics: > > 1. Re: libvirt-users Digest, Vol 18, Issue 7(libvirt-bin MOSTLY > fails to create default virtual network) (m m) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 8 Jun 2011 08:28:19 -0500 > From: m m <bk.praca(a)gmail.com> > To: libvirt-users(a)redhat.com > Subject: Re: [libvirt-users] libvirt-users Digest, Vol 18, Issue > 7(libvirt-bin MOSTLY fails to create default virtual network) > Message-ID: <BANLkTikt49i78OJfzBgufoesv3C-Pjrdjw(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > I have attached all the logs (/var/log/dmesg, /var/log/libvirtd.log, > /var/log/messages, /var/log/syslog, /var/log/boot.log and info about loaded > modules /proc/modules) regarding scenatios1,2,3 (please see the README file > for simple explanation what is there). By the way, I have installed only > dnsmasq-bin (and not dnsmasq). > Have a nice day > > 2011/6/6 <libvirt-users-request(a)redhat.com> > > > Send libvirt-users mailing list submissions to > > libvirt-users(a)redhat.com > > > > To subscribe or unsubscribe via the World Wide Web, visit > > https://www.redhat.com/mailman/listinfo/libvirt-users > > or, via email, send a message with subject or body 'help' to > > libvirt-users-request(a)redhat.com > > > > You can reach the person managing the list at > > libvirt-users-owner(a)redhat.com > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of libvirt-users digest..." > > > > > > Today's Topics: > > > > 1. libvirt-bin MOSTLY fails to create default virtual network (m > > m) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Mon, 6 Jun 2011 14:24:04 -0500 > > From: m m <bk.praca(a)gmail.com> > > To: libvirt-users(a)redhat.com > > Subject: [libvirt-users] libvirt-bin MOSTLY fails to create default > > virtual network > > Message-ID: <BANLkTinrE80HURSwJUUv28_v9HB9mRxNNw(a)mail.gmail.com> > > Content-Type: text/plain; charset="iso-8859-1" > > > > I have observed 3 scenarios after I reboot the host with 2 guests (which > > are > > supposed to autostart after boot/reboot of the host): > > 1. Default network is created but I can not ping guests. Gests don't have > > assigned IP address or they both have IP address 192.168.122.100. > > 2. Default network is not created. > > 3. Default netork is properly created and everything works fine. > > In each case guests are started and they work properly. Cases 1. and 2. > > happen a lot more often then case 3. > > > > My solutions: > > - When I restart libvirt-bin then everything is fine. > > - When I set 'sleep 40' in 'pre-start' section of > > /etc/init/libvirt-bin.conf > > and modify 'start on' section in the following way: > > > > start on (runlevel [2345] and net-device-up IFACE=br0) > > > > then everything works fine. > > > > > > However, none of the above solutions indeed solves the problem. Please, > let > > me know if there is solution to this problem or what are your suggestions > > regarding this issue. > > > > **** > > HOST$ uname -a > > Linux ras 2.6.32-32-server #62-Ubuntu SMP Wed Apr 20 22:07:43 UTC 2011 > > x86_64 GNU/Linux > > > > GUEST1 and GUEST2 > > $ uname -a > > Linux server1-desktop 2.6.32-32-generic #62-Ubuntu SMP Wed Apr 20 > 21:54:21 > > UTC 2011 i686 GNU/Linux > > > > HOST$ libvirtd --version > > libvirtd (libvirt) 0.7.5 > > > > My idea was that some kernel modules sometimes are loaded before > > libvirt-bin > > starts, and sometimes libvirt-bin starts earlier, or in the middle of > > loading of these modules, that is why 3 scenarios can be observed. > > That is why I have added: > > cp /proc/modules /home/wsadmin2/modules1 > > cp /proc/modules /home/wsadmin2/modules2 > > to 'pre-start' and 'post-start' parts respectively of > > /etc/init/libvirt-bin.conf. > > > > Of course, beween execution of > > - pre-start part > > - exec /usr/sbin/libvirtd -d > > - post-start part > > other kernel modules can be loaded, so we can not be sure which > additional > > modules in file 'modules2' were indeed loaded before libvirtd was > actually > > started. > > > > Here are my observations: > > Scenatio 1. > > 33 (fixed) modules were logged - call them BASE MODULES. > > > > Scenatio 2. > > Beside BASE MODULES + the following modules were loaded: > > > > > iptable_filter 1841 0 - Live 0xffffffffa007c000 > > > ip_tables 18201 1 iptable_filter, Live 0xffffffffa0172000 > > > x_tables 22361 1 ip_tables, Live 0xffffffffa0164000 > > > > Scenatio 3. > > Beside BASE MODULES + the following modules were loaded: > > > > $ diff modules1 modules2 > > 1c1,6 > > < iptable_filter 1841 0 - Live 0xffffffffa008b000 > > --- > > > xt_state 1490 14 - Live 0xffffffffa01ab000 > > > xt_tcpudp 2667 12 - Live 0xffffffffa01a5000 > > > nf_conntrack_ipv4 12742 14 - Live 0xffffffffa019b000 > > > nf_conntrack 73326 2 xt_state,nf_conntrack_ipv4, Live > 0xffffffffa017d000 > > > nf_defrag_ipv4 1481 1 nf_conntrack_ipv4, Live 0xffffffffa0177000 > > > iptable_filter 1841 1 - Live 0xffffffffa008b000 > > 3c8 > > < x_tables 22361 1 ip_tables, Live 0xffffffffa0162000 > > --- > > > x_tables 22361 3 xt_state,xt_tcpudp,ip_tables, Live 0xffffffffa0162000 > > > > Other observations: > > Scenatio 1. > > No errors in libvirtd.log > > Scenario 2. > > > > 10:06:06.980: error : networkAddIptablesRules:750 : failed to add > iptables > > rule to allow DHCP requests from 'virbr0': Invalid argument > > (...) > > 10:06:08.630: error : qemudNetworkIfaceConnect:1445 : Failed to add tap > > interface to bridge 'virbr0': No such device > > 10:06:08.630: error : qemuAutostartDomain:584 : Failed to autostart VM > > 'cluster_server1': Failed to add tap interface to bridge 'virbr0': No > such > > device > > > > 10:06:08.921: info : qemudDispatchSignalEvent:390 : Received unexpected > > signal 17 > > 10:06:08.927: debug : virExecWithHook:617 : LC_ALL=C /usr/bin/kvm -help > > 10:06:08.938: info : qemudDispatchSignalEvent:390 : Received unexpected > > signal 17 > > 10:06:09.000: error : qemudNetworkIfaceConnect:1445 : Failed to add tap > > interface to bridge 'virbr0': No such device > > 10:06:09.000: error : qemuAutostartDomain:584 : Failed to autostart VM > > 'cluster_server2': Failed to add tap interface to bridge 'virbr0': No > such > > device > > (...) > > Scenatio 3. > > No errors in libvirtd.log > > > > > > I didn't see any valuable logs in /var/log/boot.log, /var/log/messages, > > /var/log/syslog. Please let me know if you want to see them anyway or > have > > any suggestions right away. > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3… > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: scenario1 > > Type: application/octet-stream > > Size: 19317 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3… > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: scenario2 > > Type: application/octet-stream > > Size: 8294 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3… > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: scenario3 > > Type: application/octet-stream > > Size: 2366 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3… > > > > > -------------- next part -------------- > > A non-text attachment was scrubbed... > > Name: libvirt-bin.conf > > Type: application/octet-stream > > Size: 924 bytes > > Desc: not available > > URL: < > > > https://www.redhat.com/archives/libvirt-users/attachments/20110606/54a07ab3… > > > > > > > ------------------------------ > > > > _______________________________________________ > > libvirt-users mailing list > > libvirt-users(a)redhat.com > > https://www.redhat.com/mailman/listinfo/libvirt-users > > > > End of libvirt-users Digest, Vol 18, Issue 7 > > ******************************************** > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://www.redhat.com/archives/libvirt-users/attachments/20110608/625b332f… > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: LucidClusterStack.rar > Type: application/rar > Size: 4473008 bytes > Desc: not available > URL: < > https://www.redhat.com/archives/libvirt-users/attachments/20110608/625b332f… > > > > ------------------------------ > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users > > End of libvirt-users Digest, Vol 18, Issue 11 > ********************************************* >

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