April 2012 - Users - libvirt List Archives

[libvirt-users] [API reference] confused by CPU time term
by Zhihua Che 16 Apr '12

16 Apr '12

Hi, everyone I'm writing a virtual machine monitor based on libvirt. As I read the api reference, I found I'm confused by some terms. 1, What is cumulative I/O wait CPU time? API reference says that VIR_NODE_CPU_STATS_IOWAIT indicate cumulative I/O wait CPU time. I'm confused by this time. As far as I know, when cpu meets IO wait situation, it will schedule another task, so, how this IO wait time is accounted? 2, How do I get VCPU runtime? In my mind, VIR_DOMAIN_CPU_STATS_CPUTIME indicates the physical cpu time consumed by the domain. Is there any API by which I can query virtual CPU running stats in one domain?

3 3

[libvirt-users] What's the precision of the domain cpu stats?
by Zhihua Che 16 Apr '12

16 Apr '12

Hi, everyone I'm using libvirt and resort to virDomainGetCPUStats for cpu usage by one domain. In my system, Ubuntu-11.10 64bit with 2 cores and Qemu Hyperviser, this function returns something like this: virTypedParameter[0] { field: "cpu_time" type: 4 value.ul 51640610899 } virTypedParameter[1] { field: "cpu_time" type: 4 value.ul 55302820304 } This 51640610899 and 55302820304 kind of conflict the result returned by "cat /proc/stat | grep cpu" cpu 449224 6812 89433 4407261 50327 1 2443 0 13041 0 cpu0 224251 2603 43144 2195672 34682 0 2350 0 6692 0 cpu1 224972 4209 46289 2211589 15644 0 93 0 6349 0 I know the precision of /proc/stat is 1/HZ, so what's the precision of CPU stats returned by virDomainGetCPUStats?

2 1

Re: [libvirt-users] libvirt slow responding after define poool with existing VG with some other lv
by Anton Gorlov 16 Apr '12

16 Apr '12

16.04.2012 18:05, Cole Robinson написал: >> 16.04.2012 17:48, Cole Robinson ÐœÐ°Ð¿ÐžÑÐ°Ð»: >>> Sorry, I'd like to help, but judging by your log file this will be a pain to >>> figure out and I can't spare the time. Hopefully we can narrow it down >>> remotely. >> familiar problem... >> in strace i see >> futex(0x7d1f84, FUTEX_WAIT_PRIVATE, 3, NULL) = -1 EAGAIN (Resource temporarily >> unavailable) >> futex(0x7d1f84, FUTEX_WAIT_PRIVATE, 5, NULL<detached ...> > Hmm, maybe try a kernel downgrade? downgrade kernel to 2.6.32 solve problem.

1 0

[libvirt-users] libvirt slow responding after define poool with existing VG with some other lv
by Anton Gorlov 16 Apr '12

16 Apr '12

If I add VG with some other lv-s to libvirt pool then libvirt slow responding. How to fix it? <pool type='logical'> <name>LVM_MAIN</name> <uuid>a2713bed-ad4a-fb79-83b5-65a9e8f1094e</uuid> <capacity>0</capacity> <allocation>0</allocation> <available>0</available> <source> <name>LVM_MAIN</name> <format type='unknown'/> </source> <target> <path>/dev/LVM_MAIN</path> <permissions> <mode>0700</mode> <owner>-1</owner> <group>-1</group> </permissions> </target> </pool> vgdisplay File descriptor 7 (pipe:[37858]) leaked on vgdisplay invocation. Parent PID 12554: bash --- Volume group --- VG Name LVM_MAIN System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 9 VG Access read/write VG Status resizable MAX LV 0 Cur LV 4 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 1.82 TiB PE Size 4.00 MiB Total PE 476931 Alloc PE / Size 139520 / 545.00 GiB Free PE / Size 337411 / 1.29 TiB VG UUID ymYQtb-Xjnd-OBNv-xnUQ-w9gi-5uxm-kjzo not created libvirt /dev/LVM_MAIN/os_mirror VG Name LVM_MAIN LV UUID iPfekp-PN1C-rPHP-Bo3K-TljL-cffi-NdDvpi LV Write Access read/write LV Status available # open 1 LV Size 500.00 GiB Current LE 128000 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 created by libvirt-install --- Logical volume --- LV Name /dev/LVM_MAIN/debian6.0-1.img VG Name LVM_MAIN LV UUID 23ncRV-yimL-2OTZ-K4ck-YKNo-s6x6-Bjh3cl LV Write Access read/write LV Status available # open 0 LV Size 15.00 GiB Current LE 3840 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 --- Logical volume --- LV Name /dev/LVM_MAIN/debian6.0-bacula.img VG Name LVM_MAIN LV UUID BFANbb-fFpC-k0wZ-ue5e-Y6bF-Rnbg-tmelt0 LV Write Access read/write LV Status available # open 0 LV Size 15.00 GiB Current LE 3840 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 --- Logical volume --- LV Name /dev/LVM_MAIN/debian6.0-bacula-1.img VG Name LVM_MAIN LV UUID nTOAaH-3B50-QtQ7-Xf9k-9Q0H-mftQ-p0zdO6 LV Write Access read/write LV Status available # open 0 LV Size 15.00 GiB Current LE 3840 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:3

2 5

[libvirt-users] A way to determine when a guest domain was launched?
by Amy Skinner 16 Apr '12

16 Apr '12

I've looked around at the API documents (I'm using python) and I know how to find the cpu active uptime of the domain, but that only increases if the domain is running something. Is there a way to determine when the domain was first launched, either as a date or uptime with idle uptime included? /Amy

2 1

[libvirt-users] Live migration of instance using KVM hypervisor fails
by Gurjar, Unmesh 12 Apr '12

12 Apr '12

Hi, I am trying to migrate a running instance, but it fails with the following error: $ virsh migrate --live instance-00000008 qemu+tcp://10.2.3.150/system --verbose error: operation failed: migration job: unexpectedly failed I can see following in the instance specific qemu log directory (/var/log/libvirt/qemu/instance-00000008.log) on the destination host: 2012-04-12 03:57:26.211: starting up LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name instance-00000008 -uuid 86b357d0-b76d-4cde-a0d1-90fb65508ff2 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000008.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot c -kernel /opt/stack/nova/mnt_instances/instance-00000008/kernel -initrd /opt/stack/nova/mnt_instances/instance-00000008/ramdisk -append root=/dev/vda console=ttyS0 -drive file=/opt/stack/nova/mnt_instances/instance-00000008/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -netdev tap,ifname=tap57b16714-9a,script=,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:45:b3:c6,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/opt/stack/nova/mnt_instances/instance-00000008/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -k en-us -vga cirrus -incoming tcp:0.0.0.0:49169 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 Domain id=20 is tainted: high-privileges Domain id=20 is tainted: shell-scripts char device redirected to /dev/pts/17 2012-04-12 03:57:26.850: shutting down can't delete tap57b16714-9a from eth1: Operation not supported SIOCSIFADDR: Permission denied SIOCSIFFLAGS: Permission denied SIOCSIFFLAGS: Permission denied /etc/qemu-ifdown: could not launch network script Libvirt version on both hosts: $ libvirtd --version libvirtd (libvirt) 0.9.2 $ virsh --version 0.9.2 Here are my libvirtd.conf details: listen_tls = 0 listen_tcp = 1 unix_sock_group = "libvirtd" unix_sock_rw_perms = "0770" auth_unix_ro = "none" auth_unix_rw = "none" auth_tcp = "none" Would be great if someone can point out the issue here. Note: I have disable apparmor for libvirtd profile and am able to list the instances running on the remote host (from both the servers). Thanks & Regards, Unmesh Gurjar | Lead Engineer | Vertex Software Private Ltd. | w. +91.20.6604.1500 x 379 | m. +91.982.324.7631 | unmesh.gurjar(a)nttdata.com<mailto:unmesh.gurjar@nttdata.com> | Follow us on Twitter@NTTDATAAmericas ______________________________________________________________________ Disclaimer:This email and any attachments are sent in strictest confidence for the sole use of the addressee and may contain legally privileged, confidential, and proprietary data. If you are not the intended recipient, please advise the sender by replying promptly to this email and then delete and destroy this email and any attachments without any further use, copying or forwarding

1 0

[libvirt-users] No way to obtain guest's cpu and mem usage?
by RaSca 12 Apr '12

12 Apr '12

Hi everybody, I'm using the PHP API to make a web interface interact with the virtual machines installed on some hypervisor. Everything is fine, but I would like to find a way to get the guest's cpu and mem usage, so that it should be possible to make some rrd graphs. I didn't find out anything and also it seems looking around that there is no way to obtain those data. What is strange for me is that programs like virt-top are showing exactly what I'm looking for. Can anyone help me to find out a way to retrieve those statistics? Another related question: do you think I can obtain the same data by using this: ps aux | egrep "[/]usr/libexec/qemu-kvm.*libvirt.*" | awk '{print $3"/"$4}' on the hypervisor? These are related to the kvm process, and the kvm process IS the virtual machine... Or not? Thanks to everybody, -- RaSca Mia Mamma Usa Linux: Niente è impossibile da capire, se lo spieghi bene! rasca(a)miamammausalinux.org http://www.miamammausalinux.org

3 8

[libvirt-users] Can I get all esx servers by virsh connecting vcenter?
by li_fuqiong 12 Apr '12

12 Apr '12

To Whom may be concerned: I connect a vCenter by vpx://example-vcenter.com/dc1/srv1 , but how I get all esx servers managed by this vCenter? Thank you. Mark

1 0

[libvirt-users] Libvirtd not starting on reboot
by Shawn Davis 12 Apr '12

12 Apr '12

Hello everyone, I have libvirt and qemu/kvm running on ubuntu 11.10 desktop. Everything is working great when it is on. The problem is if I reboot, virsh doesn't see the hypervisor anymore and I can't manually start libvirtd. Libvirtd is currently located in /usr/sbin/libvirtd and I originally started it with sudo ./libvirtd -d from that directory. How do I ensure that libvirtd starts on bootup of the host machine? Thanks, Shawn

1 0

[libvirt-users] vol-wipe and delete
by Shawn Davis 11 Apr '12

11 Apr '12

Hello all, I know libvirt has the following two commands: vol-wipe vol-delete Can someone please explain to me how these function? Do these only remove previous session data so that a new virtual instance cannot see it or does it remove it at the physical level level too so that the data cannot be found anywhere on the physical drive? I know Eucalyptus and KVM use sparse files upon instance creation and the instance thinks the ephemeral space is all zeroes even though it is just sparse. I appreciate any insight in how the two virsh commands work and if they use zeroes, sparse, or some other method. Thanks, Shawn

2 1

[libvirt-users] virsh attach-disk with cache=none and io=native for raw devices (online)
by Frido Roose 11 Apr '12

11 Apr '12

Hello, I see there is an option with virsh attach-disk to set the cache to "none" for raw devices, but I can't find how to attach the disk with io=native (needed for performance reasons). The goal is to attach a disk online, directly with the proper performance settings. I know I can set this in virt-manager, but then I have to restart the VM to apply the change, so this is an offline operation. With virsh edit, I guess I also would have to restart the VM... -- Frido Roose Sent with Sparrow (http://www.sparrowmailapp.com/?sig)

2 2

[libvirt-users] PCI passthrough error
by Jaap Winius 10 Apr '12

10 Apr '12

Hi folks, Has anyone encountered the following PCI passthrough error? error: internal error Process exited while reading console \ log output: char device redirected to /dev/pts/1 assigned_dev_pci_read: pread failed, ret = 0 errno = 2 It's produced after I've detached the PCI device from the base OS and have tried to start up the guest domain. To get to this point, I mostly followed these instructions: http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/cha… The distro I'm using is Debian squeeze, which by default comes with libvirt 0.8.3 and qemu-kvm 0.12.5, although to avoid a different PCI passthrough error, I used Debian backports for squeeze to upgrade them to libvirt 0.9.8 and qemu-kvm 1.0. The motherboard involved has VT-d support, which I've enabled with the "intel_iommu=on" kernel option (dmesg shows "Intel-IOMMU: enabled"). I did not bother with setsebool because SELinux is disabled. According to lspci, the device I want to pass through to the guest domain, a USB controller, has bus/slot/function 00:1a.0, so I added the following stanza to the <devices> section of my guest domain: <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x00' slot='0x1a' function='0x0'/> </source> </hostdev> Actually, every time I save this configuration, libvirt changes it to: <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x00' slot='0x1a' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </hostdev> Huh, slot 5? I don't have any PCI devices that use slot 5. Well, at least the system doesn't complain, but I worry that this might be a symptom of something more serious. Anyway, I'd be very grateful if anyone has any tips on how I might avoid the aforementioned error and get PCI passthrough to to work. Thanks, Jaap

2 3

[libvirt-users] Libvirt-0.9.11 compilation on Centos 5.6
by Rajat Mehrotra 10 Apr '12

10 Apr '12

Hi All, I am trying to compile libvirt-0.9.11 on Centos 5.6 (32 bit) for xen 4.1. I have followed following procedure to compile the libvirt library. 1. ./autogen.sh --system --with-xen 2. make While running "make", I am receiving following errors : ------------------------------------------------------------------------------------------------------------- CC libvirt_iohelper-iohelper.o CCLD libvirt_iohelper CC libvirt_parthelper-parthelper.o CCLD libvirt_parthelper libvirt_parthelper-parthelper.o: In function `main': /root/Downloads/libvirt-0.9.11/src/storage/parthelper.c:103: undefined reference to `ped_device_get' /root/Downloads/libvirt-0.9.11/src/storage/parthelper.c:117: undefined reference to `ped_disk_new' /root/Downloads/libvirt-0.9.11/src/storage/parthelper.c:123: undefined reference to `ped_disk_next_partition' /root/Downloads/libvirt-0.9.11/src/storage/parthelper.c:173: undefined reference to `ped_disk_next_partition' collect2: ld returned 1 exit status make[3]: *** [libvirt_parthelper] Error 1 make[3]: Leaving directory `/root/Downloads/libvirt-0.9.11/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/root/Downloads/libvirt-0.9.11/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/root/Downloads/libvirt-0.9.11' make: *** [all] Error 2 ------------------------------------------------------------------------------------------------------------ I have installed parted (GNU parted) 3.0 ( previously it was 1.8.1 . I have seen that a lot of people have reported this error but no one has shared the solution. Does anyone remember the solution? Thanks in advance. Rajat

1 0

[libvirt-users] virsh works but libvirt-java throws a 'No route to host'
by Jon Drews 09 Apr '12

09 Apr '12

I'm able to connect to my xenserver using virsh like so and I see the VMs. [jdrews@flynx ~]$ virsh -c xenapi://root@192.168.1.23?no_verify=1 list Enter root's password for 192.168.1.23: Id Name State ---------------------------------------------------- Struct did not contain expected field memory_overhead. Struct did not contain expected field snapshot_info. Struct did not contain expected field snapshot_metadata. Struct did not contain expected field parent. Struct did not contain expected field children. Struct did not contain expected field bios_strings. Struct did not contain expected field protection_policy. Struct did not contain expected field is_snapshot_from_vmpp. Struct did not contain expected field appliance. Struct did not contain expected field start_delay. Struct did not contain expected field shutdown_delay. Struct did not contain expected field order. Struct did not contain expected field VGPUs. Struct did not contain expected field attached_PCIs. Struct did not contain expected field suspend_SR. Struct did not contain expected field version. 0 Control domain on host: xenserver-4 running Struct did not contain expected field memory_overhead. Struct did not contain expected field snapshot_info. Struct did not contain expected field snapshot_metadata. Struct did not contain expected field parent. Struct did not contain expected field children. Struct did not contain expected field bios_strings. Struct did not contain expected field protection_policy. Struct did not contain expected field is_snapshot_from_vmpp. Struct did not contain expected field appliance. Struct did not contain expected field start_delay. Struct did not contain expected field shutdown_delay. Struct did not contain expected field order. Struct did not contain expected field VGPUs. Struct did not contain expected field attached_PCIs. Struct did not contain expected field suspend_SR. Struct did not contain expected field version. 23 VM1 (RH5.2 10.4.1.69 eth0) running Struct did not contain expected field memory_overhead. Struct did not contain expected field snapshot_info. Struct did not contain expected field snapshot_metadata. Struct did not contain expected field parent. Struct did not contain expected field children. Struct did not contain expected field bios_strings. Struct did not contain expected field protection_policy. Struct did not contain expected field is_snapshot_from_vmpp. Struct did not contain expected field appliance. Struct did not contain expected field start_delay. Struct did not contain expected field shutdown_delay. Struct did not contain expected field order. Struct did not contain expected field VGPUs. Struct did not contain expected field attached_PCIs. Struct did not contain expected field suspend_SR. Struct did not contain expected field version. 25 DeviceSimulator (192.168.1.150) running Struct did not contain expected field memory_overhead. Struct did not contain expected field snapshot_info. Struct did not contain expected field snapshot_metadata. Struct did not contain expected field parent. Struct did not contain expected field children. Struct did not contain expected field bios_strings. Struct did not contain expected field protection_policy. Struct did not contain expected field is_snapshot_from_vmpp. Struct did not contain expected field appliance. Struct did not contain expected field start_delay. Struct did not contain expected field shutdown_delay. Struct did not contain expected field order. Struct did not contain expected field VGPUs. Struct did not contain expected field attached_PCIs. Struct did not contain expected field suspend_SR. Struct did not contain expected field version. 28 VM3 (RH 5.2 10.4.1.15 eth0) running Struct did not contain expected field memory_overhead. Struct did not contain expected field snapshot_info. Struct did not contain expected field snapshot_metadata. Struct did not contain expected field parent. Struct did not contain expected field children. Struct did not contain expected field bios_strings. Struct did not contain expected field protection_policy. Struct did not contain expected field is_snapshot_from_vmpp. Struct did not contain expected field appliance. Struct did not contain expected field start_delay. Struct did not contain expected field shutdown_delay. Struct did not contain expected field order. Struct did not contain expected field VGPUs. Struct did not contain expected field attached_PCIs. Struct did not contain expected field suspend_SR. Struct did not contain expected field version. 30 Router 10.4.1.x (192.168.1.254) running I'm using a compiled version of libvirt that I enabled the xenapi protocol. [jdrews@flynx ~]$ virsh -v 0.9.10 I can also start and stop VMs via virsh. So the next move for me was to get this working with the java bindings, libvirt-java. I grabbed libvirt-0.4.7.jar and built it. Eclipse is set up and I can see everything correctly. I built a small runnable test jar and ran it. [jdrews@flynx ~]$ java -jar VirtAPITesting.jar connecting on: xenapi://root@192.168.1.23?no_verify=1 Enter root's password for 192.168.1.23 WARNING: THE ENTERED PASSWORD WILL NOT BE MASKED! mytestpass exception caught:org.libvirt.LibvirtException: unable to connect to server at '192.168.1.23:16514': No route to host level:VIR_ERR_ERROR code:VIR_ERR_SYSTEM_ERROR domain:VIR_FROM_RPC hasConn:false hasDom:false hasNet:false message:unable to connect to server at '192.168.1.23:16514': No route to host str1:%s str2:unable to connect to server at '192.168.1.23:16514': No route to host str3:null int1:-1 int2:-1 Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58) Caused by: java.lang.NullPointerException at com.codemettle.VirtAPI.testing.VirtAPITesting.main(VirtAPITesting.java:29) ... 5 more But I know there is a route to the host as virsh could get there. Sanity check: ping works fine too. [jdrews@flynx ~]$ ping 192.168.1.23 PING 192.168.1.23 (192.168.1.23) 56(84) bytes of data. 64 bytes from 192.168.1.23: icmp_req=1 ttl=64 time=1.58 ms Here is the code I'm running in the VirtAPITesting.jar. For the most part it's a direct copy of the example at the end of the libvirt java page: http://libvirt.org/java.html package com.jdrews.VirtAPI.testing; import org.libvirt.*; public class VirtAPITesting { public static void main(String[] args) throws InterruptedException { System.setProperty("jna.library.path", "/usr/local/lib/"); Connect conn=null; System.out.println( ConnectAuth defaultAuth = new ConnectAuthDefault(); try{ conn = new Connect("xenapi://root@192.168.1.23?no_verify=1", defaultAuth, 0); } catch (LibvirtException e){ System.out.println("exception caught:"+e); System.out.println(e.getError()); } try { Domain testDomain=conn.domainLookupByName("DeviceSimulator (192.168.1.150)"); System.out.println("Domain:" + testDomain.getName() + " id " + testDomain.getID() + " running " + testDomain.getOSType()); } catch (LibvirtException e) { System.out.println("exception caught:"+e); System.out.println(e.getError()); } } } Does anyone know what's going on here? Any help or advice would be greatly appreciated. Thanks! -- Jon Drews jondrews.com

1 0

[libvirt-users] NFS + sanlock problems
by Kyrre Begnum 08 Apr '12

08 Apr '12

Hello list, In short: I am experiencing a problem where trying to start a VM which is allready running on a different libvirt host. Starting it fails, thanks to sanlock, but the disk dies on the original hypervisor and the vms filesystem is rendered read-only. Long version: i have the following setup: Two machines (H1 and H2) using CentOS 6.2 with the packages: qemu-kvm-0.12.1.2-2.209.el6_2.4.x86_64 libvirt-client-0.9.4-23.el6_2.7.x86_64 libvirt-0.9.4-23.el6_2.7.x86_64 libvirt-lock-sanlock-0.9.4-23.el6_2.7.x86_64 They share two NFS folders, one for filesystems ( net set up as a libvirt storage pool ) and one for sanlock. sanlock is started without watchdog. /etc/libvirt/qemu-sanlock.conf: auto_disk_leases = 1 disk_lease_dir = "/opt/mln/sanlock" host_id = 51 ( host_id is 52 on H2 ) cat /etc/libvirt/qemu.conf | grep sanlock lock_manager = "sanlock" A virtual machine is created ( with virsh create ) on H1 using the following xml: <domain type='kvm' > <name>rhel1.locktest</name> <memory>524288</memory> <vcpu></vcpu> <os> <type arch='x86_64' >hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/opt/mln/projects/root/locktest/images/rhel1'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <source bridge='br0'/> </interface> <serial type='pty'> <source path='/dev/pts/8'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/8'> <source path='/dev/pts/8'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <sound model='ich6'> <alias name='sound0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <graphics type='spice' /> <video> <model type='qxl' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='selinux' relabel='yes'> <label>system_u:system_r:svirt_t:s0:c141,c961</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c141,c961</imagelabel> </seclabel> </domain> Here is the qemu log ( with debugging enabled ) from H1: 2012-04-08 22:03:13.346: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=spice /usr/bin/qemu-kvm -S -M rhel6.2.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name rhel1.locktest -uuid e3bc07fe-8b01-5f90-7c91-ad154630379e -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/rhel1.locktest.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -drive file=/opt/mln/projects/root/locktest/images/rhel1,if=none,id=drive-ide0-0-0,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=52:54:00:b6:8d:14,bus=pci.0,addr=0x3 -net tap,fd=25,vlan=0,name=hostnet0 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -spice port=5900,addr=127.0.0.1,disable-ticketing -vga qxl -global qxl-vga.vram_size=67108864 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 2012-04-08 20:03:13.351+0000: 3485: info : libvirt version: 0.9.4, package: 23.el6_2.7 (CentOS BuildSystem <http://bugs.centos.org>, 2012-03-26-14:12:59, c6b5.bsys.dev.centos.org) 2012-04-08 20:03:13.351+0000: 3485: debug : virCommandHook:1920 : Run hook 0x484a70 0x7faa81356610 2012-04-08 20:03:13.351+0000: 3485: debug : qemuProcessHook:2147 : Obtaining domain lock 2012-04-08 20:03:13.351+0000: 3485: debug : virDomainLockManagerNew:123 : plugin=0x7faa74018450 dom=0x7faa680008c0 withResources=1 2012-04-08 20:03:13.351+0000: 3485: debug : virLockManagerNew:291 : plugin=0x7faa74018450 type=0 nparams=4 params=0x7faa81355a60 flags=0 2012-04-08 20:03:13.351+0000: 3485: debug : virLockManagerLogParams:98 : key=uuid type=uuid value=e3bc07fe-8b01-5f90-7c91-ad154630379e 2012-04-08 20:03:13.351+0000: 3485: debug : virLockManagerLogParams:94 : key=name type=string value=rhel1.locktest 2012-04-08 20:03:13.351+0000: 3485: debug : virLockManagerLogParams:82 : key=id type=uint value=2 2012-04-08 20:03:13.351+0000: 3485: debug : virLockManagerLogParams:82 : key=pid type=uint value=3485 2012-04-08 20:03:13.351+0000: 3485: debug : virDomainLockManagerNew:135 : Adding leases 2012-04-08 20:03:13.351+0000: 3485: debug : virDomainLockManagerNew:140 : Adding disks 2012-04-08 20:03:13.351+0000: 3485: debug : virDomainLockManagerAddDisk:86 : Add disk /opt/mln/projects/root/locktest/images/rhel1 2012-04-08 20:03:13.351+0000: 3485: debug : virLockManagerAddResource:320 : lock=0x7faa680021d0 type=0 name=/opt/mln/projects/root/locktest/images/rhel1 nparams=0 params=(nil) flags=0 2012-04-08 20:03:13.352+0000: 3485: debug : virLockManagerAcquire:337 : lock=0x7faa680021d0 state='(null)' flags=3 fd=0x7faa81355bcc 2012-04-08 20:03:13.352+0000: 3485: debug : virLockManagerSanlockAcquire:725 : Register sanlock 3 2012-04-08 20:03:13.353+0000: 3485: debug : virLockManagerSanlockAcquire:783 : Acquire completed fd=3 2012-04-08 20:03:13.353+0000: 3485: debug : virLockManagerFree:374 : lock=0x7faa680021d0 2012-04-08 20:03:13.353+0000: 3485: debug : qemuProcessHook:2172 : Moving procss to cgroup 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupNew:602 : New group /libvirt/qemu/rhel1.locktest 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 0:cpu at /cgroup/cpu in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 1:cpuacct at /cgroup/cpuacct in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 2:cpuset at /cgroup/cpuset in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 3:memory at /cgroup/memory in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 4:devices at /cgroup/devices in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 5:freezer at /cgroup/freezer in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupDetect:261 : Detected mount/mapping 6:blkio at /cgroup/blkio in 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:523 : Make group /libvirt/qemu/rhel1.locktest 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/cpu/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/cpuacct/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/cpuset/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/memory/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/devices/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/freezer/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupMakeGroup:545 : Make controller /cgroup/blkio/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:03:13.353+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/cpu/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.359+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/cpuacct/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.367+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/cpuset/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.375+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/memory/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.383+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/devices/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.391+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/freezer/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.399+0000: 3485: debug : virCgroupSetValueStr:319 : Set value '/cgroup/blkio/libvirt/qemu/rhel1.locktest/tasks' to '3485' 2012-04-08 20:03:13.407+0000: 3485: debug : qemuProcessHook:2178 : Setup CPU affinity 2012-04-08 20:03:13.407+0000: 3485: debug : qemuProcessInitCpuAffinity:1464 : Setting CPU affinity 2012-04-08 20:03:13.407+0000: 3485: debug : qemuProcessHook:2185 : Setting up security labelling 2012-04-08 20:03:13.407+0000: 3485: debug : virSecurityDACSetProcessLabel:630 : Dropping privileges of VM to 107:107 2012-04-08 20:03:13.408+0000: 3485: debug : qemuProcessHook:2192 : Hook complete ret=0 2012-04-08 20:03:13.408+0000: 3485: debug : virCommandHook:1922 : Done hook 0 2012-04-08 20:03:13.408+0000: 3485: debug : virCommandHook:1935 : Notifying parent for handshake start on 27 2012-04-08 20:03:13.408+0000: 3485: debug : virCommandHook:1956 : Waiting on parent for handshake complete on 28 2012-04-08 20:03:13.409+0000: 3485: debug : virCommandHook:1972 : Hook is done 0 char device redirected to /dev/pts/1 do_spice_init: starting 0.8.3 spice_server_add_interface: SPICE_INTERFACE_MIGRATION spice_server_add_interface: SPICE_INTERFACE_KEYBOARD spice_server_add_interface: SPICE_INTERFACE_MOUSE spice_server_add_interface: SPICE_INTERFACE_QXL red_worker_main: begin spice_server_add_interface: SPICE_INTERFACE_PLAYBACK spice_server_add_interface: SPICE_INTERFACE_RECORD handle_dev_input: start I can log in to the VM and everything is fine. Next, i try to start the VM on H2, i get the following error: error: Failed to create domain from libvirt/rhel1.locktest.xml error: internal error Failed to acquire lock: error -243 All seems well, but now the VMs filesystem is in read-only state.... This is the qemu log from H2: 2012-04-08 22:05:27.833: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=spice /usr/bin/qemu-kvm -S -M rhel6.2.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name rhel1.locktest -uuid b1aa8f3f-4391-1014-3759-79d47a4dffdd -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/rhel1.locktest.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -drive file=/opt/mln/projects/root/locktest/images/rhel1,if=none,id=drive-ide0-0-0,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=52:54:00:d7:a4:4d,bus=pci.0,addr=0x3 -net tap,fd=25,vlan=0,name=hostnet0 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -spice port=5900,addr=127.0.0.1,disable-ticketing -vga qxl -global qxl-vga.vram_size=67108864 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 2012-04-08 20:05:27.847+0000: 5141: info : libvirt version: 0.9.4, package: 23.el6_2.7 (CentOS BuildSystem <http://bugs.centos.org>, 2012-03-26-14:12:59, c6b5.bsys.dev.centos.org) 2012-04-08 20:05:27.847+0000: 5141: debug : virCommandHook:1920 : Run hook 0x484a70 0x7f9b3c673610 2012-04-08 20:05:27.848+0000: 5141: debug : qemuProcessHook:2147 : Obtaining domain lock 2012-04-08 20:05:27.848+0000: 5141: debug : virDomainLockManagerNew:123 : plugin=0x7f9b30016aa0 dom=0x7f9b2000b6a0 withResources=1 2012-04-08 20:05:27.848+0000: 5141: debug : virLockManagerNew:291 : plugin=0x7f9b30016aa0 type=0 nparams=4 params=0x7f9b3c672a60 flags=0 2012-04-08 20:05:27.848+0000: 5141: debug : virLockManagerLogParams:98 : key=uuid type=uuid value=b1aa8f3f-4391-1014-3759-79d47a4dffdd 2012-04-08 20:05:27.848+0000: 5141: debug : virLockManagerLogParams:94 : key=name type=string value=rhel1.locktest 2012-04-08 20:05:27.848+0000: 5141: debug : virLockManagerLogParams:82 : key=id type=uint value=9 2012-04-08 20:05:27.848+0000: 5141: debug : virLockManagerLogParams:82 : key=pid type=uint value=5141 2012-04-08 20:05:27.848+0000: 5141: debug : virDomainLockManagerNew:135 : Adding leases 2012-04-08 20:05:27.848+0000: 5141: debug : virDomainLockManagerNew:140 : Adding disks 2012-04-08 20:05:27.848+0000: 5141: debug : virDomainLockManagerAddDisk:86 : Add disk /opt/mln/projects/root/locktest/images/rhel1 2012-04-08 20:05:27.848+0000: 5141: debug : virLockManagerAddResource:320 : lock=0x7f9b2000dd90 type=0 name=/opt/mln/projects/root/locktest/images/rhel1 nparams=0 params=(nil) flags=0 2012-04-08 20:05:27.849+0000: 5141: debug : virLockManagerAcquire:337 : lock=0x7f9b2000dd90 state='(null)' flags=3 fd=0x7f9b3c672bcc 2012-04-08 20:05:27.850+0000: 5141: debug : virLockManagerSanlockAcquire:725 : Register sanlock 3 2012-04-08 20:05:27.850+0000: 5141: debug : virLockManagerSanlockAcquire:783 : Acquire completed fd=3 2012-04-08 20:05:27.850+0000: 5141: debug : virLockManagerFree:374 : lock=0x7f9b2000dd90 2012-04-08 20:05:27.850+0000: 5141: debug : qemuProcessHook:2172 : Moving procss to cgroup 2012-04-08 20:05:27.850+0000: 5141: debug : virCgroupNew:602 : New group /libvirt/qemu/rhel1.locktest 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 0:cpu at /cgroup/cpu in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 1:cpuacct at /cgroup/cpuacct in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 2:cpuset at /cgroup/cpuset in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 3:memory at /cgroup/memory in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 4:devices at /cgroup/devices in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 5:freezer at /cgroup/freezer in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupDetect:261 : Detected mount/mapping 6:blkio at /cgroup/blkio in 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:523 : Make group /libvirt/qemu/rhel1.locktest 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/cpu/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/cpuacct/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/cpuset/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/memory/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/devices/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/freezer/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupMakeGroup:545 : Make controller /cgroup/blkio/libvirt/qemu/rhel1.locktest/ 2012-04-08 20:05:27.851+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/cpu/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.865+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/cpuacct/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.873+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/cpuset/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.881+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/memory/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.893+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/devices/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.901+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/freezer/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.909+0000: 5141: debug : virCgroupSetValueStr:319 : Set value '/cgroup/blkio/libvirt/qemu/rhel1.locktest/tasks' to '5141' 2012-04-08 20:05:27.917+0000: 5141: debug : qemuProcessHook:2178 : Setup CPU affinity 2012-04-08 20:05:27.917+0000: 5141: debug : qemuProcessInitCpuAffinity:1464 : Setting CPU affinity 2012-04-08 20:05:27.918+0000: 5141: debug : qemuProcessHook:2185 : Setting up security labelling 2012-04-08 20:05:27.918+0000: 5141: debug : virSecurityDACSetProcessLabel:630 : Dropping privileges of VM to 107:107 2012-04-08 20:05:27.918+0000: 5141: debug : qemuProcessHook:2192 : Hook complete ret=0 2012-04-08 20:05:27.918+0000: 5141: debug : virCommandHook:1922 : Done hook 0 2012-04-08 20:05:27.918+0000: 5141: debug : virCommandHook:1935 : Notifying parent for handshake start on 27 2012-04-08 20:05:27.919+0000: 5141: debug : virCommandHook:1956 : Waiting on parent for handshake complete on 28 2012-04-08 20:05:27.920+0000: 5141: debug : virCommandHook:1972 : Hook is done 0 char device redirected to /dev/pts/1 do_spice_init: starting 0.8.3 spice_server_add_interface: SPICE_INTERFACE_MIGRATION spice_server_add_interface: SPICE_INTERFACE_KEYBOARD spice_server_add_interface: SPICE_INTERFACE_MOUSE spice_server_add_interface: SPICE_INTERFACE_QXL red_worker_main: begin spice_server_add_interface: SPICE_INTERFACE_PLAYBACK spice_server_add_interface: SPICE_INTERFACE_RECORD 2012-04-08 22:05:28.141: shutting down qemu: terminating on signal 15 from pid 3138 Back on H1 there are multiple lines in the qemu log for the VM: block I/O error in device 'drive-ide0-0-0': Input/output error (5) block I/O error in device 'drive-ide0-0-0': Input/output error (5) block I/O error in device 'drive-ide0-0-0': Input/output error (5) block I/O error in device 'drive-ide0-0-0': Input/output error (5) block I/O error in device 'drive-ide0-0-0': Input/output error (5) Can someone please help me understand why the filesystem dies on the original host? Is this an NFS problem? What should I do differently? Many thanks in advance, K

1 0

Re: [libvirt-users] Suggestions on building VM disks from scratch
by Richard W.M. Jones 06 Apr '12

06 Apr '12

> Then I created my blank 'disk' file and tried to > run virt-rescue on it. It crashed out with an > error from febootstrap. First of all, debug this properly: (1) What is the full error message? (2) What is the complete, unedited output of 'libguestfs-test-tool'? (3) What version of libguestfs & febootstrap are using and where did you get them from? You can post the details on our mailing list libguestfs(a)redhat.com (no need to subscribe if you don't want to). > After finding nothing terribly > useful or current on this in searching, I tried > guestfish instead. After some fiddling I got it > to attach my blank disk. However I cannot find a > reasonable way to partition it with the part-add which > seems to want me to count sectors. All I want is > a 9G linux and a 2G swap. Assuming the filesystem was in /tmp/root.tar.gz, the following code will do this: guestfish <<EOF sparse /tmp/test.img 11G run part-init /dev/sda mbr # 9GB sda1 part-add /dev/sda p 64 $(( 9*1024*1024*2 )) # remainder in sda2 part-add /dev/sda p $(( 9*1024*1024*2 + 1 )) -64 mkfs ext4 /dev/sda1 mkswap /dev/sda2 mount /dev/sda1 / tgz-in /tmp/root.tar.gz / EOF Example: $ sh test.sh $ virt-df -a test.img -h Filesystem Size Used Available Use% test.img:/dev/sda1 9.0G 276M 8.3G 4% $ ll -h test.img -rw-rw-r--. 1 rjones rjones 11G Apr 4 09:39 test.img Whether this would actually boot is another question: you may also need to add some grub commands to set up the bootloader, *or* (better and easier IMHO) set up libvirt so that it boots from an external kernel + initrd. > It also lacks access to rsync. It's not the first time that someone has asked for rsync, and it wouldn't be too hard to add. However note that rsync really gives you no benefit when you're creating a filesystem from scratch, because there's no original to rsync against. If you are updating a filesystem image then rsync makes sense. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org

3 10

[libvirt-users] Is this Race Condition?
by Zhihua Che 05 Apr '12

05 Apr '12

Hi, everyone I'm writing application using libvirt and I need call virDomainGetCPUStats to get domain cpu stats . I learn from API reference that this function has to be called when domain is running. So my question is if there is an atomic way to test the domain's state and get its stats? Or, it's ok to call this function when domain is not active, but caller just gets error returned. In my code, I just call it directly and return error. I wonder if this programming practice has subtle problem like race condition.

3 3

[libvirt-users] Bare libvirt web interface
by RaSca 04 Apr '12

04 Apr '12

Hi, I set up a virtual environment based upon KVM/libvirt/pacemaker. When managing this I cannot use virt-manager or virsh, since everything is managed by the cluster. So when I need to migrate a vm I must drive the operation from pacemaker (via crm shell program). I'm ok with this kind of management, but what I need now is just a bare web interface to make the users see just the position (= on which node) and the state of the vm (cpu, memory and so on, like virt-top output). I don't want to use things like ovirt or similar, because I'm managing everything with the cluster and also I cannot use LCMC (http://lcmc.sourceforge.net/) since it is java based and is not as simple as I want. I need just those information to be printed in a self refreshing web page, and before doing it by myself I was just wondering if something already exists. I saw projects like http://karesansui-project.info and https://fedorahosted.org/virt_web but maybe there is something easier and more focused to obtain just the informations I need. Thanks to all of you for your suggestions, -- RaSca Mia Mamma Usa Linux: Niente è impossibile da capire, se lo spieghi bene! rasca(a)miamammausalinux.org http://www.miamammausalinux.org

1 0

[libvirt-users] vcpupin and kvm
by Geoff Galitz 04 Apr '12

04 Apr '12

Hi. Can anyone confirm if vcpupin works correctly with kvm? If set I pin a vcpu it shows up correctly via vcpuinfo, but querying via taskset shows the cpu is not pinned. Thanks, -Geoff -- ---- Geoff Galitz, ggalitz(a)shutterstock.com WebOps Engineer, Europe Shutterstock Images http://wwww.shutterstock.com/

2 1

[libvirt-users] [Building Error] cannot stat `t-af.gmo': No such file or directory
by Zhihua Che 04 Apr '12

04 Apr '12

Hi, everyone I'm building the newest libvirt from git repository, of version 782afa98e4a5fa9a0927a9e32f9cf36082a2e8e7 and failed complaining as the following. make[3]: Entering directory `/home/harvey/open-projects/libvirt-build/po' cd ../../libvirt/po && : --update af.po libvirt.pot cd ../../libvirt/po && rm -f af.gmo && : -c --statistics -o af.gmo af.po mv: cannot stat `t-af.gmo': No such file or directory make[3]: *** [../../libvirt/po/af.gmo] Error 1 make[3]: Leaving directory `/home/harvey/open-projects/libvirt-build/po' make[2]: *** [stamp-po] Error 2 make[2]: Leaving directory `/home/harvey/open-projects/libvirt-build/po' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/harvey/open-projects/libvirt-build' make: *** [all] Error 2 My building steps are cd <build-dir> <src-dir>/autogen.sh --help ./configure --prefix=xxx make

2 6

[libvirt-users] Suggestions on building VM disks from scratch
by Dale Amon 04 Apr '12

04 Apr '12

This may not be the best forum to ask, but it does seem to be one where it is as likely as anywhere that someone will have dealt with a similar problem. I need to define a procedure for last resort disaster recovery from an incremental file level backup of the root partition (and any others that are critical.) Now it is easy enough to create a raw virtual disk with dd, then to losetup and do a cfdisk and mkfs, then mount it and rsync the backup onto it. At this point I would like to be able to install grub and make the virtual disk bootable. I have 'issues' with the way grub does things and the way it seems to make certain assumptions for you. The virtual disk is in actuality going to become an hd(0) on the virtual machine; but my past experience with grub is that it is going to assume you really intend to install the MBR on your running system disk; but if you tell it hd(1) then when you try to boot it ain't gonna work. Has anyone dealt with these issues? It's more than just a VM one; I run up against it time and again. A few months ago I attempted to attach a brand new SATA disk via a USB converter to my laptop so I could build a system on it for a machine that has not CD, no floppy, etc, etc. I damn near clobbered my laptop but fortunately caught the problem in time and fixed it before a reboot... in which case I'd have *really* had issues.

2 4

[libvirt-users] setvcpus
by Bhasker C V 04 Apr '12

04 Apr '12

Hi all, I am facing a bit of a trouble with setvcpus on a kvm libvirt The guest is crashing right after the command is given. I have no trouble with virtio_balloon and that is working fine when I use setmem command in virsh. The guest is running 3.3.1 kernel (the command fails both on the stock kernel 2.6.X as-well-as the latest 3.3.1) I have seen it working in xen. But this is kvm. Does this feature work with kvm ? Am I missing any kernel config which enables this ? thanks eg:- virsh # start fedora12 Domain fedora12 started virsh # vcpuinfo fedora12 VCPU: 0 CPU: 1 State: running CPU time: 7.3s CPU Affinity: yyyy VCPU: 1 CPU: 3 State: running CPU time: 2.3s CPU Affinity: yyyy virsh # vcpu fedora12 vcpucount vcpuinfo vcpupin virsh # vcpucount fedora12 maximum config 8 maximum live 8 current config 2 current live 2 virsh # list Id Name State ---------------------------------- 14 fedora12 running virsh # setvcpus fedora12 4 error: operation failed: could not change CPU online status virsh # list Id Name State ---------------------------------- virsh # virsh # version Compiled against library: libvir 0.9.1 Using library: libvir 0.9.1 Using API: QEMU 0.9.1 Running hypervisor: QEMU 0.14.1 -- Bhasker C V Secure Mails: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4D05FEEC54E47413

2 1

[libvirt-users] Openvswitch support - port tagging
by Daniele Milani 03 Apr '12

03 Apr '12

I was looking at the release candidate of libvirt (0.9.11-rc2) and I have not been able to understand if the openvswitch support includes the port tagging support. So my question is: is it possible to create a tagged port? How? Otherwise, would it be useful to add this functionality? Thanks, Daniele Milani

2 2

[libvirt-users] Reality check requested...
by Dale Amon 03 Apr '12

03 Apr '12

Is this going to do what I think it will do? ie will the output be runable on a current licensed vmware server? qemu-img convert -f raw test.img -O vmdk test.vmdk

3 4

[libvirt-users] (no subject)
by Bo Bo 03 Apr '12

03 Apr '12

<a href="http://elrincondeloespecial.cl/images/stories/elrincondeloespecial/02efpk.h…"> http://elrincondeloespecial.cl/images/stories/elrincondeloespecial/02efpk.h…</a>

1 0