May 2012 - Users - libvirt List Archives

[libvirt-users] Migration with rbd storage backend
by Andrey Korolyov 19 May '12

19 May '12

Hi, Seems that such migration is currently broken, at least for 0.9.11|0.9.12, with 0.9.8 all works fine: virsh migrate --live testvm qemu+tcp://towerbig/system ---snip--- 2012-05-17 21:22:30.250+0000: 16926: debug : qemuDriverCloseCallbackGet:605 : vm=testvm, uuid=feb7ccb6-1087-8661-9284-62e3a1e9f44a, conn=(nil) 2012-05-17 21:22:30.250+0000: 16926: debug : qemuDriverCloseCallbackGet:611 : cb=(nil) 2012-05-17 21:22:30.250+0000: 16926: error : virStorageFileIsSharedFSType:1007 : Invalid relative path 'rbd/testvm-Vwu': Invalid argument 2012-05-17 21:22:30.250+0000: 16926: debug : qemuDomainObjEndAsyncJob:955 : Stopping async job: migration out 2012-05-17 21:22:30.250+0000: 16926: debug : virDomainObjUnref:1645 : obj=0x1c00cd0 refs=3 2012-05-17 21:22:30.250+0000: 16926: debug : virDomainMigrateBegin3:6173 : xml (null) 2012-05-17 21:22:30.250+0000: 16926: debug : virDomainFree:2345 : dom=0x1d7ee30, (VM: name=testvm, uuid=feb7ccb6-1087-8661-9284-62e3a1e9f44a) 2012-05-17 21:22:30.250+0000: 16926: debug : virUnrefDomain:276 : unref domain 0x1d7ee30 testvm 1 ---snip--- Also there is a second point - libvirt doesn`t allow migration of VM until all snapshots has been deleted, which is not necessary for network filesystems, so it probably needs to be fixed. Thanks!

2 1

Re: [libvirt-users] How to use Python Binding with Lbivirt.
by Hubert Zhang 19 May '12

19 May '12

When I run the python test code I got the SASL error. But it's ok if I run the C sample code. Do you know the reason? Here is the message: libvir: RPC error : authentication failed: Failed to start SASL negotiation: -4 (SASL(-4): no mechanism available: No worthy mechs found) Traceback (most recent call last): File "esxList.py", line 101, in ? conn = libvirt.openAuth(uri, auth, 0) File "/usr/lib/python2.4/site-packages/libvirt.py", line 102, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirt.libvirtError: authentication failed: Failed to start SASL negotiation: -4 (SASL(-4): no mechanism available: No worthy mechs found) Thanks, -Hubert

1 0

[libvirt-users] USB passthrough of all USB-slots to guest
by eGerlach 18 May '12

18 May '12

Hi, how can I define passthrough of all USB-slots to a guest with libvirt? With qemu it's very easy: # kvm -usb -usbdevice host:0.* -usbdevice host:1.* -usbdevice host:2.* -usbdevice host:3.* ... This configuration of the VM gets *all* 4 USB-Slots. Every time somewhat USB-device is plugged in the VM gets it. virt-install manpage offers: --host-device 001.003 USB by bus, device (via lsusb). I installed a VM with option --host-device 001.001 according to output of lsusb. The XML-file generated: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x1d6b'/> <product id='0x0002'/> </source> </hostdev> But no USB device is passed through automatically. I always need virsh attach-device virtualM myusb.xml with exact vendor and product ID. I want to plug in somewhat USB-Stick or other USB stuff without exploring vendor and product id before. Who can help? tia Ekkard

2 3

[libvirt-users] lxc: Add /dev/tty to lxcContainerPopulateDevices() ?
by Sukadev Bhattiprolu 17 May '12

17 May '12

Hi, src/lxc/lxc_container.c:lxcContainerPopulateDevices() has this table of devices that are automatically created when an lxc container is started. const struct { int maj; int min; mode_t mode; const char *path; } devs[] = { { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_NULL, 0666, "/dev/null" }, { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_ZERO, 0666, "/dev/zero" }, { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_FULL, 0666, "/dev/full" }, { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_RANDOM, 0666, "/dev/random" }, { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_URANDOM, 0666, "/dev/urandom" }, }; Can we add '/dev/tty' to this list ? We were trying to run 'smbpasswd -a user' inside a container without /dev/tty and the fopen("/dev/tty", "w+") in smbpasswd made /dev/tty a regular file, breaking man(1), less(1), and ofcourse smbpasswd :-) Sure we can add /dev/tty to container's rc.local or something, but wouldn't it be in the same category as say, /dev/null or /dev/zero ? Sukadev

2 2

[libvirt-users] Using virsh to connect to ESX
by Mauro Monteiro 17 May '12

17 May '12

Hello All, I have just started studying the libvirt and I am trying to connect to ESX Server (version 4) using virsh (version 0.7.5) using the following command: virsh -c esx+ssh://root@<fully qualified hostname)> It inquires the root password and as soon as I inform the password it throws the error: error: cannot recv data: Connection reset by peer error: failed to connect to the hypervisor I can access my server using ssh. I am running it from Ubuntu 10.04 and the libvirt version 0.7.5. Can someone help me? -- []'s Mauro

2 1

[libvirt-users] Python 3.2 support for libvirt API?
by Patrick Wilbur 16 May '12

16 May '12

Hey all, I apologize if this has been asked many times already (new to the list). I'm trying to write a Python script that makes use of the libvirt API, and I'm trying my best to make the script both Python 2.x and 3.x compatible. Is the libvirt module available for Python 3.x yet, and, if so, what is the module name that I need to import? What is the package name to install on my OS (Ubuntu 11.10)? Thanks in advance, Pat Wilbur -- Patrick F. Wilbur Researcher, Consultant, Educator, Computer Science Graduate at Clarkson University patrick.wilbur(a)gmail.com wilburpf(a)clarkson.edu Check out our book: http://runningxen.com Consulting: http://pfwilbur.com My website: http://pdub.net

2 1

[libvirt-users] libvirt, lxc, "/dev/log" ENOENT
by dennis jenkins 15 May '12

15 May '12

Hello. I am experimenting with LXC via libvirt on my Gentoo development system. I can start the LXC domain and connect to its console. However, I am unable to login as root. I've used "chroot" and "passwd" from the host system to explicitly set the root password. Still no luck. So I began debugging.... I ran "strace" on the container's "login" process (after agetty exec'd login). I noticed that it was unable to open "/dev/log". Sure enough the unix domain socket did not exist inside the container (as seen from outside the container). So I tweaked my host's syslog-ng.conf file to create this socket. My hope was to monitor the log events generated by the login process. So the log device certainly exists (and it tests ok with the 'logger' command): The LXC file-system was created with the "lxc-gentoo" script ( http://lxc-gentoo.sourceforge.net/) The only changes that I've made to the container's file system is to change roots' password ($rootfs/etc/shadow) and configure syslog-ng to create a logging socket at $rootfs/dev/log. I've even edit "$rootfs/etc/shadow" and completely removed root's password hash. I still can't log into the account from "virsh console". I thought that maybe I was unable to authenticate because the "login" process cannot log success/failure to /dev/log. However, I know from experience that on other Gentoo systems I can login as root even when syslog-ng is kaput, and /dev/log does not exist. "/etc/pam.d" inside the container is byte-for-byte the same as my host system, and I can authenticate as root from the physical console. I have a few main questions: 1) Is my domain configured correctly? 2) Why is the container unable to write to the "/dev/log" provided from outside the container? 3) Why am I unable to authenticate as the "root" user? Thank you for your time. ostara ~ # virsh -c lxc:/// start dwj-lnx-dev Domain dwj-lnx-dev started ostara ~ # virsh -c lxc:/// console dwj-lnx-dev Connected to domain dwj-lnx-dev Escape character is ^] INIT: version 2.88 booting Gentoo Linux; http://www.gentoo.org/ Copyright 1999-2009 Gentoo Foundation; Distributed under the GPLv2 Press I to enter interactive boot mode * Skipping mount of /proc as it's already mounted * Skipping mount of /sys as it's already mounted * Using existing device nodes in /dev ... [ ok ] * Skipping mount of /dev/pts as it's already mounted * Remounting root filesystem read-only ... mount: / is busy [ !! ] * Skipping root filesystem check (fstab's passno == 0) ... [ ok ] * Checking all filesystems ... [ ok ] * Mounting local filesystems ... mount: mount point /dev/shm does not exist * Some local filesystem failed to mount [ !! ] * Mounting USB device filesystem (usbfs) ... [ ok ] * Activating (possible) swap ... [ ok ] * Setting system clock using the hardware clock [UTC] ... [ ok ] * Configuring kernel parameters ... error: "Read-only file system" setting key "net.ipv4.conf.default.rp_filter" error: "Read-only file system" setting key "net.ipv4.conf.all.rp_filter" [ ok ] * Cleaning /var/lock, /var/run ... [ ok ] * Wiping /tmp directory ... [ ok ] * Starting lo * Bringing up lo * 127.0.0.1/8 [ ok ] * Adding routes * 127.0.0.0/8 ... [ ok ] INIT: Entering runlevel: 3 * Starting eth0 * Bringing up eth0 * 192.168.2.199 [ ok ] * Adding routes * default via 192.168.2.1 ... [ ok ] * Mounting network filesystems ... [ ok ] /lib64/rcscripts/sh/rc-services.sh: line 412: /etc/init.d/udev-postmount: Permission denied * Starting local ... [ ok ] This is ostara.unknown_domain (Linux x86_64 3.2.12-gentoo) 23:06:09 ostara login: ostara ~ # virsh -c lxc:/// version Compiled against library: libvir 0.9.11 Using library: libvir 0.9.11 Using API: LXC 0.9.11 Running hypervisor: LXC 3.2.12 ostara ~ # ls -l /vm/lxc/dwj-lnx-dev/dev/log srw-rw-rw- 1 root root 0 May 14 17:31 /vm/lxc/dwj-lnx-dev/dev/log ostara ~ # logger -s /vm/lxc/dwj-lnx-dev/dev/log "CAPYBARA" djenkins: /vm/lxc/dwj-lnx-dev/dev/log CAPYBARA ostara ~ # tail -n 100 /var/log/messages | grep CAPYBARA May 14 17:58:57 localhost djenkins: /vm/lxc/dwj-lnx-dev/dev/log CAPYBARA (lots of strace setup omitted): Buried about 60% down in the strace output is the attempt by "login" inside the container to access "/dev/log", which failed (ENOENT). open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3 lseek(3, 0, SEEK_CUR) = 0 fstat(3, {st_mode=S_IFREG|0644, st_size=720, ...}) = 0 mmap(NULL, 720, PROT_READ, MAP_SHARED, 3, 0) = 0x7fc6ccb66000 lseek(3, 720, SEEK_SET) = 720 munmap(0x7fc6ccb66000, 720) = 0 close(3) = 0 time([1337035715]) = 1337035715 socket(PF_FILE, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 3 connect(3, {sa_family=AF_FILE, path="/dev/log"}, 110) = -1 ENOENT (No such file or directory) close(3) = 0 fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6ccb66000 write(1, "\n", 1) = 1 write(1, "Login incorrect\n", 16) = 16 time(NULL) = 1337035715 This is my domain config: ostara ~ # virsh -c lxc:/// dumpxml dwj-lnx-dev <domain type='lxc'> <name>dwj-lnx-dev</name> <uuid>fbcd8c3a-9939-12b4-727d-5d3526bc448f</uuid> <memory unit='KiB'>500000</memory> <currentMemory unit='KiB'>500000</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</init> </os> <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> <filesystem type='mount' accessmode='passthrough'> <source dir='/vm/lxc/dwj-lnx-dev'/> <target dir='/'/> </filesystem> <interface type='bridge'> <mac address='52:54:00:3e:d9:7c'/> <source bridge='br0'/> </interface> <console type='pty'> <target type='lxc' port='0'/> </console> </devices> </domain>

1 0

[libvirt-users] Script execution at Boot
by vipul borikar 14 May '12

14 May '12

I am using KVM on RHEL 6.1. When i try to run a RHEL 5.5 Guest using virt-manager the a shell script put under rc.local runs properly. But when i try to run Guest using cmd line the script doesn't run. I mean it gives error code as 1 . The commands like echo works but executing another shell script under rc.local file doesn't run and gives return code as 1. I know its weird question .. but just was curious is there any parameter in xml file which affects the environment of the boot sequence ??? I can give the both the xml file if needed. -- Thanks Vipul Borikar "Our task must be to free ourselves...by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty."

1 0

[libvirt-users] Permission issue with cgroups
by Antonio Carlos Salzvedel Furtado Junior 12 May '12

12 May '12

Hello libvirt users, I'm using the cgroup with QEMU guests. At /etc/libvirt/qemu.conf, I have the following parameter: cgroup_controllers = [ "cpu" ] This controller is successfully mounted and libvirt is able to create subgroups for each VM, it's really great the cgroups support in libvirt. The problem is that I can only set the parameters of a given cgroup under the cpu controller if I'm logged in as root. I want another user to have that permission as well. I tried to modify the file /etc/cgconfig.conf to change the permissions. The file is exactly this: group libvirt { perm { admin { uid = opennebula; gid = opennebula; } task { uid = root; gid = root; } } cpu { cpu.shares=512; } } This configuration above does not seem to modify any of the administration permissions. Only the root can edit the parameters under libvirt. The cpu entry was added just to check whether this configuration was read by cgroups at all. The 'cpu.shares' does change in group libvirt. I was careful to start libvirt only after the service cgconfig was restarted. Thanks in advance, Antonio Carlos Furtado

2 4

[libvirt-users] libvirtd fails to start on f16 64bit
by Chad Roberts 11 May '12

11 May '12

Hello, For quite some time, my libvirtd was working great. I came back today to fire-up a VM, but noticed that libvirtd was not running. When I try to start it, I get the following error... libvirtd: symbol lookup error: libvirtd: undefined symbol: avahi_client_new Can anyone shed some light on what my problem may be? Thanks, Chad

1 0

[libvirt-users] segfault with libvirt-0.9.11.3-1
by ovirt＠qip.ru 11 May '12

11 May '12

Hi, ALL On fedora16 hosts with vdsm-4.9.6 after libvirtd daemon started in messages there are too many errors even if no one VM's running, and vdsmd not started May 11 14:44:59 kvm02 kernel: [ 6670.207465] virsh[11015]: segfault at 38 ip 00007f047a52c535 sp 00007fffe3cb0e50 error 4 in libvirt.so.0.9.11[7f047a4bb000+2fd000] May 11 14:44:59 kvm02 kernel: [ 6670.227244] virsh[11018]: segfault at 38 ip 00007f7afe3e6535 sp 00007fff41983d00 error 4 in libvirt.so.0.9.11[7f7afe375000+2fd000] May 11 14:45:09 kvm02 kernel: [ 6680.662175] virsh[11201]: segfault at 38 ip 00007ffe6c129535 sp 00007fffa82c5720 error 4 in libvirt.so.0.9.11[7ffe6c0b8000+2fd000] May 11 14:45:09 kvm02 kernel: [ 6680.679462] virsh[11204]: segfault at 38 ip 00007f9f3c596535 sp 00007fff7cc6c580 error 4 in libvirt.so.0.9.11[7f9f3c525000+2fd000] May 11 14:45:09 kvm02 kernel: [ 6680.696003] virsh[11207]: segfault at 38 ip 00007fa06fb01535 sp 00007fff23cb2260 error 4 in libvirt.so.0.9.11[7fa06fa90000+2fd000] May 11 14:45:09 kvm02 kernel: [ 6680.720678] virsh[11213]: segfault at 38 ip 00007fe557d0b535 sp 00007fff15262720 error 4 in libvirt.so.0.9.11[7fe557c9a000+2fd000] May 11 14:45:09 kvm02 kernel: [ 6680.740552] virsh[11216]: segfault at 38 ip 00007f9dc1507535 sp 00007fff71795540 error 4 in libvirt.so.0.9.11[7f9dc1496000+2fd000] May 11 14:45:20 kvm02 kernel: [ 6691.200793] virsh[11431]: segfault at 38 ip 00007f595f11e535 sp 00007fffc620f660 error 4 in libvirt.so.0.9.11[7f595f0ad000+2fd000] May 11 14:45:20 kvm02 kernel: [ 6691.220691] virsh[11434]: segfault at 38 ip 00007fa843d8c535 sp 00007fff611a4d60 error 4 in libvirt.so.0.9.11[7fa843d1b000+2fd000] May 11 14:45:20 kvm02 kernel: [ 6691.237276] virsh[11437]: segfault at 38 ip 00007f7ece215535 sp 00007fffe0d9ff60 error 4 in libvirt.so.0.9.11[7f7ece1a4000+2fd000] May 11 14:45:20 kvm02 kernel: [ 6691.258537] virsh[11443]: segfault at 38 ip 00007f6bc89f2535 sp 00007fff95244620 error 4 in libvirt.so.0.9.11[7f6bc8981000+2fd000] May 11 14:45:20 kvm02 kernel: [ 6691.278057] virsh[11446]: segfault at 38 ip 00007f4c16f36535 sp 00007fff35394480 error 4 in libvirt.so.0.9.11[7f4c16ec5000+2fd000] May 11 14:45:31 kvm02 kernel: [ 6701.766999] virsh[11660]: segfault at 38 ip 00007f8b64ce7535 sp 00007fffac3014c0 error 4 in libvirt.so.0.9.11[7f8b64c76000+2fd000] May 11 14:45:31 kvm02 kernel: [ 6701.786796] virsh[11663]: segfault at 38 ip 00007f6184ead535 sp 00007fff790ccd50 error 4 in libvirt.so.0.9.11[7f6184e3c000+2fd000] May 11 14:45:31 kvm02 kernel: [ 6701.806817] virsh[11666]: segfault at 38 ip 00007f5aa114f535 sp 00007fffb3d06d60 error 4 in libvirt.so.0.9.11[7f5aa10de000+2fd000] May 11 14:45:31 kvm02 kernel: [ 6701.831577] virsh[11672]: segfault at 38 ip 00007f2d6d123535 sp 00007fff3f45e820 error 4 in libvirt.so.0.9.11[7f2d6d0b2000+2fd000] May 11 14:45:31 kvm02 kernel: [ 6701.851596] virsh[11675]: segfault at 38 ip 00007f8160f16535 sp 00007ffff211d210 error 4 in libvirt.so.0.9.11[7f8160ea5000+2fd000] During compilation I saw this error PASS: start PASS: undefine PASS: vcpupin TEST: virsh-all ........................................ 40 ........................................ 80 .../virsh-all: line 34: 14498 Segmentation fault $abs_top_builddir/tools/virsh -c $test_url $i < /dev/null > /dev/null 2>&1 ...................................... 120 ........................................ 160 ............................ 188 OK PASS: virsh-all PASS: virsh-optparse PASS: virsh-schedinfo but compilation finished and all rpms were created environment: [root@kvm02 ~]# uname -a Linux kvm02 3.3.4-3.fc16.x86_64 #1 SMP Thu May 3 14:46:44 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux [root@kvm02 ~]# rpm -q qemu-kvm qemu-kvm-0.15.1-4.fc16.x86_64 [root@kvm02 ~]# rpm -q libvirt libvirt-0.9.11.3-1.fc16.x86_64 [root@kvm02 ~]# rpm -q vdsm vdsm-4.9.6-0.163.git0633cd2.fc16.x86_64 How is it possible to correct this? --

1 0

[libvirt-users] listing active and defined vs inactive and defined domains
by John Wayne 11 May '12

11 May '12

i am trying to list active + defined and inactive + defined domains using libvirt 0.9.4 i can get active domains using: def s_activedomains(conn): #get active domain ids numofdomains=libvirt.virConnect.numOfDomains(conn) activedomains=libvirt.virConnect.listDomainsID(conn) return activedomains i am stuck on how to get inactive domains the example listed here http://libvirt.org/guide/html/Application_Development_Guide-Guest_Domains-L… under example 4.4 and example 4.5 seems to be outdated looking at /usr/lib64/python2.6/site-packages/libvirt.py, line 2337 says that "Note that this won't work for inactive domains which have an ID of -1" i think example 4.5 is wrong because if inactive domains have an id of -1, then i can't call virDomainLookupBy{Name,ID}

2 1

[libvirt-users] Forward port 4444 to a static-IP VM
by Sean Abbott 11 May '12

11 May '12

I'm attempting to set up a selenium grid on virtual machines. The default NAT is good enough for almost everything, but I need to be able to send my hub VM requests on port 4444. I've attempted to get this going by adding the following to my iptables firewall: -t nat -A PREROUTING -p tcp --dport 4444 -j DNAT --to-destination 192.168.122.107:4444 -t filter -A FORWARD -m state -d 192.168.122.107 --state NEW,RELATED,ESTABLISHED -j ACCEPT And...it's not working. I can hit the port and make requests from the host. Help, please? Thanks! sean

1 0

[libvirt-users] serial console
by John Wayne 10 May '12

10 May '12

hi, when creating a domain using libvirt python api, how would i tell libvirt to use a unique serial port number for domains? in the libvirt.virConnect.defineXML(conn,domainxml) call when i create the domainxml object, i need to ensure that the part below has a unique # for target port <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> currently the domains running on hypervisors have target port numbers such as 1,2,3 and so on. thanks

3 2

[libvirt-users] virsh console logging and pty usage
by Doug Goldstein 10 May '12

10 May '12

Is it possible to both log the serial console and to actually use it? A few of the VMs I've got are configured as follows: <serial type='file'> <source path='/var/log/libvirt/qemu/serial/bb-2.6.18-128.el5-x86_64.log'/> <target port='0'/> </serial> <console type='file'> <source path='/var/log/libvirt/qemu/serial/bb-2.6.18-128.el5-x86_64.log'/> <target type='serial' port='0'/> </console> Because people are hoping to capture the logs after the fact to see if there was any console output which could help them debug an issue. However, if you need to connect to the console of the VM its impossible (e.g. it needs the root password for a fsck). Any suggestions to allow logging but allow it to be usable via "virsh console" as well? Thanks. -- Doug Goldstein

3 3

[libvirt-users] release open_disk error
by Frido Roose 10 May '12

10 May '12

Hello, I wonder what the "open error -1" / "release open_disk error" messages in sanlock.log actually mean. I saw these messages in the log on a KVM host that rebooted, and after running "/usr/sbin/virt-sanlock-cleanup" on that host. The resources where disks from 2 guests running on another KVM host. So in fact the disks are still in use, bot got cleaned up by the other KVM host because it thought they were not longer in use... Several questions: 1. Could this indicate a problem with the lease of these resources on the server that host these guests? 2. Is there a way to reregister these resources, because they are still in use (but not for sanlock it seems)? 3. Overall, is it a bad idea to run virt-sanlock-cleanup? Some entries from the log file: 538 s1:r35 resource __LIBVIRT__DISKS__:e133401bfdff6979f76d9544ec8a5529:/var/lib/libvirt/sanlock/e133401bfdff6979f76d9544ec8a5529:0 for 1,9,4218 539 open error -1 /var/lib/libvirt/sanlock/e133401bfdff6979f76d9544ec8a5529 539 r35 release open_disk error /var/lib/libvirt/sanlock/e133401bfdff6979f76d9544ec8a5529 598 s1:r40 resource __LIBVIRT__DISKS__:fc82f9999b5afddb8aee9955db9b3477:/var/lib/libvirt/sanlock/fc82f9999b5afddb8aee9955db9b3477:0 for 2,12,4230 598 open error -1 /var/lib/libvirt/sanlock/fc82f9999b5afddb8aee9955db9b3477 598 r40 release open_disk error /var/lib/libvirt/sanlock/fc82f9999b5afddb8aee9955db9b3477 598 s1:r42 resource __LIBVIRT__DISKS__:ff9b82672a4dd869f9c9b38a6cbe3900:/var/lib/libvirt/sanlock/ff9b82672a4dd869f9c9b38a6cbe3900:0 for 2,12,4232 598 open error -1 /var/lib/libvirt/sanlock/ff9b82672a4dd869f9c9b38a6cbe3900 598 r42 release open_disk error /var/lib/libvirt/sanlock/ff9b82672a4dd869f9c9b38a6cbe3900 -- Frido Roose

1 1

[libvirt-users] creating a domain
by John Wayne 10 May '12

10 May '12

hi, i am a bit confused on how to start an inactive domain using the python bindings, any help would be appreciated. (inactive as in the domain was created with virConnect.defineXML sometime in the past) looks like i have to use virDomain.create, however virDomain.create needs a defined domain xmldesc as a parameter and i am not sure on how to get that i guess if virConnect.create was happening right after virConnect.defineXML i could get the return value of virConnect.defineXML and pass that onto virDomain.create. however, since the domain was created sometime in the past, i am not sure on how to get the domain ptr which virDomain.create needs thanks

5 4

[libvirt-users] Libvirt java binding crash Tomcat
by Hubert Zhang 09 May '12

09 May '12

Running on linux and libvirt 0.9.11. Using libvirt java 0.4.7. Notice that the Tomcat server crashes and shows the dump like this: *** glibc detected *** jsvc.exec: double free or corruption (out): 0x086f14a8 *** ======= Backtrace: ========= /lib/libc.so.6[0xc03745] /lib/libc.so.6(cfree+0x59)[0xc03b89] /tmp/jna/jna486823639517928939.tmp(Java_com_sun_jna_Native_free+0x1d)[0x430c4c] [0xb46de240] [0xb46d218d] [0xb46d218d] [0xb46d218d] [0xb46cf3e6] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13bdb21] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x15b3478] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13bd94f] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13f0ef7] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13d4aee] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libjava.so(Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x6e)[0x11cb3e] [0xb46de240] [0xb46d218d] [0xb46d218d] [0xb46d218d] [0xb46cf3e6] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13bdb21] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x15b3478] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13bd395] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x13bd458] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x143fbe7] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x16b404f] /usr/lib/jvm/sun-java-6u24/jre/lib/i386/server/libjvm.so[0x15b4a6e] /lib/libpthread.so.0[0x8fa842] /lib/libc.so.6(clone+0x5e)[0xc6c4ce] ======= Memory map: ======== 00110000-00133000 r-xp 00000000 08:01 106948 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libjava.so 00133000-00135000 rw-p 00023000 08:01 106948 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libjava.so 00135000-00148000 r-xp 00000000 08:01 74629 /lib/libnsl-2.5.so 00148000-00149000 r--p 00012000 08:01 74629 /lib/libnsl-2.5.so 00149000-0014a000 rw-p 00013000 08:01 74629 /lib/libnsl-2.5.so 0014a000-0014c000 rw-p 00000000 00:00 0 0014c000-0014f000 ---p 00000000 00:00 0 0014f000-0019d000 rwxp 00000000 00:00 0 0019d000-001d7000 r-xp 00000000 08:01 106944 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libjdwp.so 001d7000-001d8000 rw-p 00039000 08:01 106944 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libjdwp.so 001d8000-001d9000 ---p 00000000 00:00 0 001d9000-00259000 rwxp 00000000 00:00 0 00259000-0026d000 r-xp 00000000 08:01 106885 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libnet.so 0026d000-0026e000 rw-p 00013000 08:01 106885 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/libnet.so 0026e000-00273000 r-xp 00000000 08:01 106769 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/headless/libmawt.so 00273000-00274000 rw-p 00004000 08:01 106769 /usr/lib/jvm/sun-java-6u24/jre/lib/i386/headless/libmawt.so 00276000-00290000 r-xp 00000000 08:01 74651 /lib/ld-2.5.so 00290000-00291000 r--p 00019000 08:01 74651 /lib/ld-2.5.so 00291000-00292000 rw-p 0001a000 08:01 74651 /lib/ld-2.5.so 00292000-00295000 ---p 00000000 00:00 0 00295000-002e3000 rwxp 00000000 00:00 0 002e3000-002e8000 r-xp 00000000 08:01 212038 /usr/lib/libwsman_curl_client_transport.so.1.0.0 002e8000-002e9000 rw-p 00004000 08:01 212038 /usr/lib/libwsman_curl_client_transport.so.1.0.0 ...................................... Sometimes I see "invalid pointer" as well. It seems a bug to the libvirt java API. Has anyone seen this error before? Thanks.

1 0

[libvirt-users] SSH connection timeout
by Ananth 09 May '12

09 May '12

Hi, I am trying to connect to libvirt on KVM host from a remote python client, using the connection string "qemu+ssh://<IP Address>/system" If I setup password less SSH (Public key) between the machines, I am able to proceed with the connection. But If I have not setup the public key authentication, my code hangs trying to connect to libvirt, and there is a prompt for entering password in the shell where the code is running. Is there any way to catch this in an exception and throw an error that public key not setup or password not available? Or is it possible to timeout and abort the request to connect to the host? Whatever timeout variables available online seem to work only for an already active SSH session to timeout. Any pointers ? -- Regards Ananth

2 2

[libvirt-users] Passing dhcp-options
by Michael Hierweck 09 May '12

09 May '12

Hi, I'm running some Windows clients inside KVM virtual maschines managed by libvirt. These clients are managed by a Samba 3 PDC. Therefore the DHCP needs so supply corresponding WINS server (dhcp option 44) not only IP address and DNS server. Is it possible to make dnsmasq driven by libvirt to supply custom dhcp options? I would appreciate something like this in the network.xml: [...] <dhcp> <range [...] /> <option key="key1">value1</option> <option key="key2">value2</option> [...] </dhcp> [...] Is there any other solution? Using DHCP to configure clients does not make sense when parts (WINS) of the IP configurations need to be hard coded in the clients. Thanks in advance Michael -- EDV-Serviceteam Annika & Michael Hierweck GbR Egerstraße 53, 44225 Dortmund (Germany) http://www.edv-serviceteam.net

1 0

[libvirt-users] creation of storage volume fails
by John Wayne 08 May '12

08 May '12

hi, i am getting this error below when i try to create a storage volume: libvirt.virStoragePool.CreateXML(storagepoolobject,xmldesc,0) AttributeError: class virStoragePool has no attribute 'CreateXML' my code is: xmldesc="xml description of storage volume which i got from sudo virsh vol-dumpxml" #get a storage pool object to use in creating a volume storagepoolobject=libvirt.virConnect.storagePoolLookupByName(conn,'poolname') #now try to create the volume using the above storage pool object libvirt.virStoragePool.CreateXML(storagepoolobject,xmldesc,0) from python: -bash-4.1$ python >>> import libvirt >>> dir(libvirt.virStoragePool) ['UUID', 'UUIDString', 'XMLDesc', '__del__', '__doc__', '__init__', '__module__', 'autostart', 'build', 'connect', 'create', 'createXML', 'createXMLFrom', 'delete', 'destroy', 'info', 'isActive', 'isPersistent', 'listVolumes', 'name', 'numOfVolumes', 'refresh', 'setAutostart', 'storageVolLookupByName', 'undefine'] >>> help(libvirt.virStoragePool.createXML) Help on method createXML in module libvirt: createXML(self, xmldesc, flags) unbound libvirt.virStoragePool method Create a storage volume within a pool based on an XML description. Not all pools support creation of volumes from the libvirt.org documentation: http://libvirt.org/html/libvirt-libvirt.html#virStorageVolCreateXML virStorageVolPtrvirStorageVolCreateXML(virStoragePoolPtr pool, const char * xmldesc, unsigned int flags) Create a storage volume within a pool based on an XML description. Not all pools support creation of volumes pool:pointer to storage pool xmldesc:description of volume to create flags:extra flags; not used yet, so callers should always pass 0 Returns:the storage volume, or NULL on error

2 2

[libvirt-users] Destroy VM failed.
by david_zhu 08 May '12

08 May '12

3 4

[libvirt-users] list storage pools and volumes using python api calls
by Syed A. Ali 08 May '12

08 May '12

how do i list storage pools and volumes using the python bindings? basically the python api calls for virsh pool-list and virsh vol-list thanks

3 3

[libvirt-users] libvirt read only connections upgraded to full access connections
by Doug Goldstein 07 May '12

07 May '12

I've gone through the docs and the API and I didn't see a way to do this but I wanted to confirm. My application gives a bunch of info on the state of a VM that's available through a connection created through libvirt.openReadOnly() but at some point the user might want to restart the VM let's say. This requires a full privilege connection, rather than opening a new connection I was hoping to upgrade the existing one to a full privilege connection. Just confirming that's not possible. -- Doug Goldstein

1 0

[libvirt-users] libvirt python api for storage-volumes and storage-pools
by John Wayne 07 May '12

07 May '12

hi, how do i list storage pools and volumes using the python bindings? basically the python api calls for virsh pool-list and virsh vol-list thanks

2 2