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[libvirt-users] how to boot the lxc container with a default ip
by lei yang 26 Sep '13

26 Sep '13

Hi expert my xml is <domain type='lxc'> <name>vm1</name> <memory>500000</memory> <os> <type>exe</type> <init>/bin/sh</init> </os> <vcpu>1</vcpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <interface type='network'> <source network='default'/> </interface> <console type='pty' /> </devices> </domain> I want start the guest with a ip=192.168.122.22 how could I modify the xml ? Lei

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[libvirt-users] virDomainGetInfo() returns wrong domain state
by Panday Ritesh Sharma (rpanday) 26 Sep '13

26 Sep '13

Hi Team, I have written below code to get the VM state at run time. I found, though the VM is in shut-off state, when I use the function virDomainGetInfo(); I get state as running. Could you please let me know what wrong I am doing. To know the actual VM state I used 'virsh list' and it clearly shows the VM is in shut-off state. Please find the log and code snippet below. Log from virsh: ================= [host:~]$ virsh list --all Id Name State ---------------------------------------------------- 1 calvados running 2 LCXR running 3 default-sdr--1 running - test--2 shut off Out put: ========= 04.03.06.698923264:INFO: vm_libvirt_state_to_vmm_state: state returned is 1 Note : Here 1 is actually running. Code snippet: =============== enum cidl_vmm_vm_state vm_libvirt_state_to_vmm_state(unsigned char libvirt_state) { enum cidl_vmm_vm_state state; INFO("%s: state returned is %u\n",__FUNCTION__, libvirt_state); <<<<<<<<<<<<<<<<<< if (libvirt_state == VIR_DOMAIN_RUNNING) { state = cidl_vm_state_running; } else if ((libvirt_state == VIR_DOMAIN_PAUSED) || (libvirt_state == VIR_DOMAIN_BLOCKED)) { state = cidl_vm_state_paused; } else if (libvirt_state == VIR_DOMAIN_SHUTOFF) { state = cidl_vm_state_defined; } else { state = cidl_vm_state_not_defined; } return state; } virDomainInfo res_util; virDomainPtr dom = virDomainLookupByName(virt, private_names[vm_idx]); res = virDomainGetInfo(dom, &res_util); vminfo[vm_idx].vm_state = vm_libvirt_state_to_vmm_state(res_util.state); Regards Ritesh Sharma

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[libvirt-users] SR-IOV Pool Availability
by Brian Rak 26 Sep '13

26 Sep '13

If I'm using the SR-IOV Pool assignment method (from http://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_VFs… ), how would I check how many virtual functions are already in use? Is there a method other then looping through all the active guests and determining if they're using the SR-IOV interface?

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[libvirt-users] Migrate hangs at 99%
by Gergely Horváth 26 Sep '13

26 Sep '13

Hello guys! We have a lot of virtual machines and I recently tried out the migrate feature of libvirt. It works like a charm, even without shared storage, but when we try to migrate a VM under a little pressure (a HTTP server gets some 1-5 requests/sec) the migration process hangs at 99%. After we stop the stressing of the VM, the migration immediately finishes. I'm using the following command to migrate: virsh migrate --live --persistent --undefinesource --copy-storage-all --verbose --desturi qemu+ssh://root@DESTINATION/system VM-NAME Do you have any advice on this? Üdvözlettel / Best regards Gergely Horváth | gergely.horvath(a)inepex.com http://inepex.com | IT Development and Location Based Services http://inetrack.com | The customizable fleet tracking platform

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Re: [libvirt-users] [Xen-devel] Error i am getting when using libvirt in xen 4.2
by Dario Faggioli 26 Sep '13

26 Sep '13

[This looks a lot like an user (rather than developer) question, so I'm moving the conversation to the appropriate users' lists, with xen-devel in Bcc for this message] On mer, 2013-09-25 at 10:43 +0530, cooldharma06 wrote: > hi, > > > i am using xen-4.2. i am trying to create the virual machine with > libvirt (virsh). > What distribution? What version of libvirt? Is that with the distro packaged version of libvirt and Xen, or you built them yourself? Oh, although it's probably unrelated, HVM or PV VM? > if i use the xen-xm means its working fine. > Mmm... Does that mean you have xend running? > i am getting the following error: > > > error: Failed to reconnect to the hypervisor > error: no valid connection > error: unable to connect to 'localhost:8000': Connection refused > That's what you see in the terminal output, right? What about logs? What's in /var/log/libvirt/ and /var/log/libvirt/libxl ? > Give me some idea to make the xen(xl) to work with libvirt. > Sure we can try, if you give us some more info! :-P Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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[libvirt-users] Collecting system stats
by Sam Giraffe 26 Sep '13

26 Sep '13

Hi, I am trying to create a report across all my KVM hypervisors using libvirt API and I need some assistance in figuring out the right API calls. My report will contain the total available memory, CPU, disk across all hypervisors, versus the amount used by the virtual machines. This report will help figure out if we are running low on hypervisor disk, CPU or memory and if we need to add more. I can't find the libvirt API call to get system info, such as total memory in the system, free memory, total disk space, available disk space, etc. There is virDomainInfo which shows memory total and free about a particular VM, I guess I can use active/inactive domain list and then use virDomainInfo on each of the VM's, but that does not give me hypervisor stats. I am wondering if I will have to enable SNMP and use that to get hypervisors stats. I am creating this report remotely on a reporting machine which will connect to each hypervisor using the libvirt API using one of the remote libvirt connections available. Thanks

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[libvirt-users] how to mount /dev/shm on system container
by Aarti Sawant 25 Sep '13

25 Sep '13

i have create a system container test1 and trying to mount /dev/shm inside a container <domain type='lxc'> <name>test1</name> <memory>102400</memory> <os> <type>exe</type> <init>/sbin/init</init> </os> <vcpu>1</vcpu> <devices> <console type='pty'/> <emulator>/usr/libexec/libvirt_lxc</emulator> <filesystem type='mount' accessmode='passthrough'> <source dir='/lxc/test1/'/> <target dir='/'/> </filesystem> <interface type='bridge'> <source bridge='br0'/> </interface> </devices> </domain> network settings on host /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth0" BOOTPROTO="dhcp" BRIDGE="br0" HWADDR="08:00:27:97:D6:35" NM_CONTROLLED="no" ONBOOT="yes" TYPE="Ethernet" UUID="fe9d7236-f418-47ab-b472-6e6caabdd807" /etc/sysconfig/network-scripts/ifcfg-br0 DEVICE="br0" TYPE="Bridge" USERCTL="no" ONBOOT="yes" BOOTPROTO="dhcp" NM_CONTROLLED="no" network setting on host /lxc/test1/etc/sysconfig/network-scripts/ifcfg-eth0 EVICE=eth0 ONBOOT=yes TYPE=Ethernet BOOTPROTO=dhcp PREFIX=24 USERCTL=yes IPV6INIT=no vim /lxc/test1/etc/fstab none /dev/shm tmpfs defaults 0 0 chroot /lxc/test1 mkdir -m 1777 /dev/shm After mounting /dev/shm on container, my container gets hang. Has anyone tried to mount /dev/shm ? Thanks, Aarti Sawant NTTDATA OSS Center Pune

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Re: [libvirt-users] virDomainGetInfo() returns wrong domain state
by Panday Ritesh Sharma (rpanday) 25 Sep '13

25 Sep '13

Hi Libvirt support team, Could you please help me with below query. Regards Ritesh Sharma From: Panday Ritesh Sharma (rpanday) Sent: Tuesday, September 24, 2013 8:22 PM To: 'libvir-list(a)redhat.com'; 'libvirt-users(a)redhat.com'; Vinay Shankarkumar (vinays) Cc: Basavaraj Bendigeri (bbendige); q-se-dev(mailer list) Subject: virDomainGetInfo() returns wrong domain state Hi Team, I have written below code to get the VM state at run time. I found, though the VM is in shut-off state, when I use the function virDomainGetInfo(); I get state as running. Could you please let me know what wrong I am doing. To know the actual VM state I used 'virsh list' and it clearly shows the VM is in shut-off state. Please find the log and code snippet below. Log from virsh: ================= [host:~]$ virsh list --all Id Name State ---------------------------------------------------- 1 calvados running 2 LCXR running 3 default-sdr--1 running - test--2 shut off Out put: ========= 04.03.06.698923264:INFO: vm_libvirt_state_to_vmm_state: state returned is 1 Note : Here 1 is actually running. Code snippet: =============== enum cidl_vmm_vm_state vm_libvirt_state_to_vmm_state(unsigned char libvirt_state) { enum cidl_vmm_vm_state state; INFO("%s: state returned is %u\n",__FUNCTION__, libvirt_state); <<<<<<<<<<<<<<<<<< if (libvirt_state == VIR_DOMAIN_RUNNING) { state = cidl_vm_state_running; } else if ((libvirt_state == VIR_DOMAIN_PAUSED) || (libvirt_state == VIR_DOMAIN_BLOCKED)) { state = cidl_vm_state_paused; } else if (libvirt_state == VIR_DOMAIN_SHUTOFF) { state = cidl_vm_state_defined; } else { state = cidl_vm_state_not_defined; } return state; } virDomainInfo res_util; virDomainPtr dom = virDomainLookupByName(virt, private_names[vm_idx]); res = virDomainGetInfo(dom, &res_util); vminfo[vm_idx].vm_state = vm_libvirt_state_to_vmm_state(res_util.state); Regards Ritesh Sharma

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[libvirt-users] VM with ceph backend snapshot-revert error
by 王根意 24 Sep '13

24 Sep '13

Hey guys: I have a running vm with ceph backend: root@apc20-005:~# virsh list > Id Name State > ---------------------------------- > 56 one-240 running And *snapshot-create-as* works well: root@apc20-005:~# virsh snapshot-create-as one-240 > Domain snapshot 1380009353 created But when exec *snapshot-revert*, error occurs: root@apc20-005:~# virsh snapshot-revert one-240 1380009353 > *error: operation failed: Error -22 while loading VM state* And the vm went paused state. root@apc20-005:~# virsh list > Id Name State > ---------------------------------- > 56 one-240 paused When I use qcow2 image backend, Everything is ok! Any idea?

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[libvirt-users] How to create snapshots for sheepdog with libvirt API
by Pavel Tokarev 24 Sep '13

24 Sep '13

Hello! I am trying to create snapshots for sheepdog disks using libvirt API or virsh. The disk is defined in domain as follows: <disk type='network' device='disk'> <driver name='qemu' cache='none'/> <source protocol='sheepdog' name='sheepvol1'/> <target dev='vdb' bus='virtio'/> </disk> I have tried both options "external" and "internal". If I try to create external snapshot with virsh command: snapshot-create-as vps vpssnap --disk-only --diskspec vda,snapshot=no --diskspec vdb,snapshot=external I get an error: source for disk 'vdb' is not a regular file; refusing to generate external snapshot name. If I try the same command but with "internal" mode: snapshot-create-as vps vpssnap --disk-only --diskspec vda,snapshot=no --diskspec vdb,snapshot=internal virsh creates a snapshot, but this snapshot is useless. If i try to revert to this snapshot i get an error: "qemu-img: Could not open 'sheepvol1': No such file or directory", plus if I list all VDIs with "collie vdi list" I do not see any snapshots there. So i guess virsh does not create an appropriate sheepdog snapshot at all. Can someone please tell me how to create snapshots for sheepdog disks? Thank you.

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