- Users - libvirt List Archives

[libvirt-users] virsh command vol-upload purpose question
by Li, Chun Wen 22 Aug '12

22 Aug '12

I use virsh vol-upload to upload some data in a volume and use vol-download to download these data from the same volume, both these two commands work well. However, when I first use these two commands, I thought I can use vol-upload to upload some file, then attach this volume to a vm, and access the upload file in this vm. I did this experiment, bud it not success. Once I upload a file into a volume, attach it to a vm, then the vm can not recognize the file type of this vm, if I mkfs to the volume, the file I upload disappear. So, my question is the purpose of the vol-upload is just to save some data in the volume outside vm? And at this point do we have method to access the data upload to the volume from vm? Thanks Bests Kimi Li

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[libvirt-users] What can cause "libvirtd dead but pid file exists."
by xuanmao_001 22 Aug '12

22 Aug '12

Hi, Eric: I noticed that: # service libvirtd status libvirtd dead but pid file exists. I operated VMs(like create, edit, delte) normally for a second, but the libvirtd on host was dead. I checked the libvirtd.log but didn't find any useful information. so I want to know what can cause the problem? another question: I found the message in /var/log/message like "libvirtd: Could not find keytab file: /etc/libvirt/krb5.tab: Permission denied." what is going wrong? my libvirt version: 0.9.8. thanks. xuanmao_001

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[libvirt-users] Finding cause when "virsh list" hangs
by Whit Blauvelt 22 Aug '12

22 Aug '12

Hi, Did something dumb - had two VM hosts with DRBD mirroring of VMs on the same UPS, which failed and crashed them both. While I've got VMs running now on both, "virsh list" and "virsh start" and so on are just hanging. I'm not seeing it log anything in these instances - just hanging. Both systems are Ubuntu 10.10, one with the stock libvirtd 0.8.3 and one with 0.9.12 compiled from source. They each brought up their autostart VMs okay. But I've got no working virsh shell on either now. The 0.9.12 host was, to complicate this report, okay with virsh initially, or "virsh list" anyway. But it hung with a "virsh start," and now "virsh list" fails too. So ... what should I look for to have been left where by the crash that's making virsh hang? Is there any way to get virsh to provide debugging info in a coffee-addled-friendly way? I've of course Googled "virsh list" hanging, but without finding anything that seems to directly apply to my case, although it's been seen before. Thanks, Whit

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[libvirt-users] disappeared VM in virsh
by Akendo 21 Aug '12

21 Aug '12

Hi guys, one of my VM has disappeared in libvirtd. I still can see the process with ps and the configuration file is as well there. But it is not displayed or found with virt-manger/virsh. virsh list shows only 4 of 5, but there is no real error message. I restarted the daemon without solving the problem. Any idea what to do? Here some info: Compiled against library: libvir 0.9.13 Using library: libvir 0.9.13 Using API: QEMU 0.9.13 Running hypervisor: QEMU 0.12.1 uname -a Linux 2.6.32-220.17.1.el6.x86_64 #1 SMP Wed May 16 00:01:37 BST 2012 x86_64 x86_64 x86_64 GNU/Linux It's a CentOS 6 so far Akendo

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[libvirt-users] Libvirt Qemu compatibility
by Shawn Furrow 21 Aug '12

21 Aug '12

Hi all, I am using Ubuntu 10.04 Server and I am trying to figure out which versions of qemu-kvm and libvirt are known to work well together and if there is anything special that needs to be done during their installs. I am trying to work with the latest version of libvirt possible that will be stable with qemu-kvm. Right now, the only configuration I've been able to get working are the "libvirt-bin" and "qemu-kvm" distribution packages. However, I would like to at least install libvirt from source because I want to have access to the source code and make minor changes. Thanks, Shawn -- Virginia Tech Bradley Department of Electrical and Computer Engineering B.S. Electrical Engineering B.S. Computer Engineering

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[libvirt-users] IP over IB support.
by Eric J Nelson 21 Aug '12

21 Aug '12

Hello, I'm trying to set up a lxc container with access to a Infiniband card with IP over IB. I have scripts written to create the device in the container and add all the proper cgroup permissions on the host. I can access the card from the container, but there is no Infiniband network device present. I can't create the ib0 and ib1, and I have come to believe this is because they are made on the host when the modules are inserted. Is inserting modules possible with lxc and libvirt? Is it currently possible to use IP over IB in any of the virtualization technologies that libvirt supports? I'm not bound to lxc. Eric Nelson

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[libvirt-users] capabilities mismatch
by Sean Abbott 21 Aug '12

21 Aug '12

So I have two instances of opennebula running libvirst/kvm. They were both installed using identical methods (a bit of a black box, frankly) on slightly different hardware. (one is "nephalem" intel, the other is "westmere". That's the only difference.) in fact, an architecture check from a kernel standpoint seems to come back identical. (unless my understanding of uname -a is incomplete, which seems likely) Old machine: Linux my.old.machine.com 2.6.38-7.2.0.2-amd64-8993020 #1 SMP Fri Dec 16 23:01:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux New machine: Linux my.new.machine.com 2.6.38-7.2.0.2-amd64-8993020 #1 SMP Fri Dec 16 23:01:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux However, the capabilities in virsh are very different. The new machine has i686 instead of x86_64,and it is missing the guest KVM domain type. Old capabilities: http://pastebin.com/EptdUYiG New capabilities: http://pastebin.com/pke4MGFJ Two questions: First, any idea why it might've come down differently. Second, can it be fixed? Can I try just copying the capabilities from old to new? Or something equally straightforward?

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[libvirt-users] storage pool does not support volume creation
by zhijun liu 21 Aug '12

21 Aug '12

hi,all I use iscsi create stroage pool,now i want create a volume on the pool,but encouner a error: error: Failed to create vol from volume.xml error: this function is not supported by the connection driver: storage pool does not support volume creation else replacing way to resolve this problem?? thanks

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[libvirt-users] libvirtd crashes after guest migration with attached console
by Andrey Korolyov 21 Aug '12

21 Aug '12

Hi, please see following backtrace. How to reproduce: start qemu guest w/attached console, execute migration, get a crash at the end. Program received signal SIGSEGV, Segmentation fault. virHashRemoveEntry (table=0x7fa0e0003e90, name=0x7fa0ec00ca60) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/virhash.c:463 bt #0 virHashRemoveEntry (table=0x7fa0e0003e90, name=0x7fa0ec00ca60) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/virhash.c:463 #1 0x00007fa0ffa5efcc in virConsoleFDStreamCloseCb (st=<optimized out>, opaque=0x7fa0ec00cad0) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/conf/virconsole.c:259 #2 0x00007fa0ffa7a303 in virFDStreamCloseInt (st=0x7fa0ec00c900, streamAbort=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/fdstream.c:325 #3 0x00007fa0ffaa0503 in virStreamAbort (stream=0x7fa0ec00c900) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/libvirt.c:15289 #4 0x00000000004290c0 in daemonStreamEvent (st=<optimized out>, events=12, opaque=0x18869f0) at /var/tmp/build/libvirt/libvirt-0.9.13/./daemon/stream.c:234 #5 0x00007fa0ffa7a4ac in virFDStreamEvent (watch=<optimized out>, fd=<optimized out>, events=13, opaque=0x7fa0ec00c900) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/fdstream.c:171 #6 0x00007fa0ff9fb07f in virEventPollDispatchHandles (fds=<optimized out>, nfds=11) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/event_poll.c:489 #7 virEventPollRunOnce () at /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/event_poll.c:636 #8 0x00007fa0ff9f99b7 in virEventRunDefaultImpl () at /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/event.c:247 #9 0x00007fa0ffad930d in virNetServerRun (srv=0x186f0b0) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/rpc/virnetserver.c:712 #10 0x000000000040c9fc in main (argc=<optimized out>, argv=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./daemon/libvirtd.c:1299

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[libvirt-users] Using Libvirt Java Bindings on Windows 7 64bit
by Frank Wilson 21 Aug '12

21 Aug '12

Hi All, Has anybody had any managed to use the libvirt java bindings on Windows 7 64bit (or similar configuration)? I am using Java 6. When I try to use the Test.class delivered with the bindings it always fails with the following error: C:\Users\fwilson\Desktop\libvirt-java-0.4.7>java "-Djna.library.path=C:/Program Files (x86)/Libvirt/lib/" -classpath .;target/classes;jars/* Test Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load librar y 'virt': The specified module could not be found. at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:169) at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:242) at com.sun.jna.Library$Handler.<init>(Library.java:140) at com.sun.jna.Native.loadLibrary(Native.java:368) at com.sun.jna.Native.loadLibrary(Native.java:353) at org.libvirt.jna.Libvirt.<clinit>(Unknown Source) at org.libvirt.Connect.<clinit>(Unknown Source) at Test.main(Test.java:17) I installed libvirt using the experimental package: http://libvirt.org/windows.html Is this a 32bit build? Does that mean I should use a 32bit JVM? In any case the above test program fails whether I use a 32 or 64 bit JVM. I tried pointing jna.library.path to the libvirt bin directory instead of the lib directory but that also failed. Thanks for any help you can offer, Frank

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