- Users - libvirt List Archives

[libvirt-users] QEMU hook on restore
by Székelyi Szabolcs 13 Feb '12

13 Feb '12

Hi, I'm using libvirt 0.8.3. It looks like to me that when a QEMU domain is restored from save, the hook is called with the "stopped end -" arguments. I've also noticed that the domain description passed to the hook script doesn't contain the network device the host will be attached to (XPath: /domain/devices/interface/target/@dev). Are these a bugs or a features? Thanks, -- cc

3 10

[libvirt-users] libvirtd restore error?
by lee 13 Feb '12

13 Feb '12

Hi qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 qemu-kvm-tools-0.12.1.2-2.160.el6_1.2.x86_64 libvirt-java-javadoc-0.4.7-1.el6.noarch libvirt-client-0.8.7-18.el6.x86_64 fence-virtd-libvirt-qpid-0.2.1-8.el6.x86_64 ocaml-libvirt-0.6.1.0-6.2.el6.x86_64 libvirt-devel-0.8.7-18.el6.x86_64 libvirt-python-0.8.7-18.el6.x86_64 libvirt-java-0.4.7-1.el6.noarch libvirt-cim-0.5.11-3.el6.x86_64 libvirt-java-devel-0.4.7-1.el6.noarch libvirt-client-0.8.7-18.el6.i686 libvirt-qpid-0.2.22-6.el6.x86_64 fence-virtd-libvirt-0.2.1-8.el6.x86_64 libvirt-0.8.7-18.el6.x86_64 ocaml-libvirt-devel-0.6.1.0-6.2.el6.x86_64 get this error when I try to restore a vm that was 'save'. Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 909, in run_domain vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 1321, in startup self._backend.create() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 330, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: cannot send monitor command '{"execute":"qmp_capabilities"}': Connection reset by peer the solution was to delete the /var/lib/libvirt/qemu/save directory. Anyone any idea of why? Lee

2 1

[libvirt-users] virt-manager thru window's remote desktop
by Hisao Taguchi 13 Feb '12

13 Feb '12

Hi, I am trying to operate the remote KVM host's virt-manager thru Terminal Server Client. This KVM hosts is CentOS6.0 and running KVM guest and xrdp is installed from "epel" repo. And I'm using fedora 14's Terminal Server Client. After I started Virtual Machine Manager and try to connect to the hypervisor, following error happened. Is there any way to resolve this error? I know that when I use VNC server , this error does not happened, but I want to use Terminal Server rather than VNC, because this doesn't need extra software for windows client PCs. -- Error snip -- Virtual Machine Manager Connection Failure Unable to open a connection to the libvirt management daemon. Libvirt URI is: qemu:///system Verify that: - The 'libvirtd' daemon has been started Details Unable to open connection to hypervisor URI 'qemu:///system': authentication failed Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 992, in_try_open None],flags) File "/usr/lib64/python2.6/site-packages/libvirt.py",line 111,in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: authentication failed -- end -- Hisao

2 3

[libvirt-users] java binding
by Maurizio Paone 12 Feb '12

12 Feb '12

Hi all, I'm trying to use the libvirt event system in order to notify the VM status (VM boot, reboot, crash, etc.). I must use the java binding, so I exposed some calls not present in "Libvirt-java" jna interface: virEventRunDefaultImpl() virEventRegisterDefaultImpl() (and several costant). In my java source I tried to intercept the event, using the "Connection.domainEventRegisterAny( ... )" call , but the "answer" was: "this function is not supported by the connection driver: no event support". No errors issued on the virEventRunDefaultImpl and virEventRegisterDefaultImpl (moreover, both the calls return "0" ). I do not know the libvirt internals, so my question is : it is possible to call the libvirt events calls using java binding? Can you tell me the issues involved in this task? I'm thinking to build a native library and use jni or use jython as alternatives. Thanks, Maurizio

1 0

[libvirt-users] Unable to collect VM metrics for ESX using libvirt
by sethu subbiah 10 Feb '12

10 Feb '12

Hi, I am trying to connect to a server running esx and collect system metrics like cpu usage, network and disk iops. I am able to establish the connection successfully and obtain VM information such as ids, domain names, config xml etc. But I am unable to collect statistics. I am using the python interface and if I do , conn=libvirt.openAuth(uri, auth, 0) dom-conn.lookupByID(id) // Where id is the domain id of the vms netstats=dom.interfaceStats(interface) gives an error libvirt.libvirtError: this function is not supported by the connection driver: virDomainInterfaceStats The same goes for block stats. For the cpu, I used, cpu=dom.info()[4] but, that always returns 0 (I thought it was cumulative and returns a huge value) I have used similar scripts with xen and kvm and it worked well. Can someone tell me what mistake I am doing or if the driver doesnt support these functions, is there any other way of getting the stats ?? Thank you. - Regards, Sethuraman Subbiah Graduate Student - NC state University M.S in Computer Science

2 1

[libvirt-users] virsh migrate results in error: Timed out during operation: cannot acquire state change lock
by Nuno Sousa 10 Feb '12

10 Feb '12

Hi all, Hi have one computer hosting several VM, this particular server is in need of maintenance and has to be shutdown. In order to avoid disrupting the services provided by the VM I intended to migrate the VM to another computer. Computer 1 and 2 do not share any storage. So it is necessary to migrate not only the memory but also any data on the hard-drive. Both computers are running debian squeeze. Virsh is version 0.8.3. I issue this command on server one: sudo LIBVIRT_DEBUG=1 virsh migrate --live --copy-storage-all i00cn1011 qemu+ssh://user@computer2/session > debug.log 2>&1 On virt-manager on computer 1, the VM appears for a few moments as paused, and then disappears. On computer 1 I receive the error: Timed out during operation: cannot acquire state change lock Does anyone know what the problem may be and how to solve it? Next I send all the data returned by virsh. Thanks everyone. user@computer1:~$ cat debug.log 13:52:07.911: debug : virInitialize:339 : register drivers 13:52:07.911: debug : virRegisterDriver:927 : registering Test as driver 0 13:52:07.911: debug : virRegisterNetworkDriver:733 : registering Test as network driver 0 13:52:07.911: debug : virRegisterInterfaceDriver:764 : registering Test as interface driver 0 13:52:07.911: debug : virRegisterStorageDriver:795 : registering Test as storage driver 0 13:52:07.911: debug : virRegisterDeviceMonitor:826 : registering Test as device driver 0 13:52:07.911: debug : virRegisterSecretDriver:857 : registering Test as secret driver 0 13:52:07.911: debug : virRegisterNWFilterDriver:888 : registering Test as network filter driver 0 13:52:07.911: debug : virRegisterDriver:927 : registering Xen as driver 1 13:52:07.911: debug : virRegisterDriver:927 : registering OPENVZ as driver 2 13:52:07.911: debug : vboxRegister:122 : VBoxCGlueInit failed, using dummy driver 13:52:07.911: debug : virRegisterDriver:927 : registering VBOX as driver 3 13:52:07.911: debug : virRegisterNetworkDriver:733 : registering VBOX as network driver 1 13:52:07.911: debug : virRegisterStorageDriver:795 : registering VBOX as storage driver 1 13:52:07.911: debug : virRegisterDriver:927 : registering remote as driver 4 13:52:07.911: debug : virRegisterNetworkDriver:733 : registering remote as network driver 2 13:52:07.911: debug : virRegisterInterfaceDriver:764 : registering remote as interface driver 1 13:52:07.911: debug : virRegisterStorageDriver:795 : registering remote as storage driver 2 13:52:07.911: debug : virRegisterDeviceMonitor:826 : registering remote as device driver 1 13:52:07.911: debug : virRegisterSecretDriver:857 : registering remote as secret driver 1 13:52:07.911: debug : virRegisterNWFilterDriver:888 : registering remote as network filter driver 1 13:52:07.911: debug : virConnectOpenAuth:1498 : name=(null), auth=0x7f3c96c6c7a0, flags=0 13:52:07.911: debug : do_open:1206 : no name, allowing driver auto-select 13:52:07.911: debug : do_open:1243 : trying driver 0 (Test) ... 13:52:07.911: debug : do_open:1249 : driver 0 Test returned DECLINED 13:52:07.911: debug : do_open:1243 : trying driver 1 (Xen) ... 13:52:07.911: debug : do_open:1249 : driver 1 Xen returned DECLINED 13:52:07.911: debug : do_open:1243 : trying driver 2 (OPENVZ) ... 13:52:07.911: debug : do_open:1249 : driver 2 OPENVZ returned DECLINED 13:52:07.911: debug : do_open:1243 : trying driver 3 (VBOX) ... 13:52:07.911: debug : do_open:1249 : driver 3 VBOX returned DECLINED 13:52:07.911: debug : do_open:1243 : trying driver 4 (remote) ... 13:52:07.911: debug : remoteOpen:1120 : Auto-probe remote URI 13:52:07.911: debug : doRemoteOpen:564 : proceeding with name = 13:52:07.911: debug : remoteIO:9886 : Do proc=66 serial=0 length=28 wait=(nil) 13:52:07.911: debug : remoteIO:9961 : We have the buck 66 0x7f3c96d01010 0x7f3c96d01010 13:52:07.912: debug : remoteIODecodeMessageLength:9314 : Got length, now need 64 total (60 more) 13:52:07.912: debug : remoteIOEventLoop:9812 : Giving up the buck 66 0x7f3c96d01010 (nil) 13:52:07.912: debug : remoteIO:9990 : All done with our call 66 (nil) 0x7f3c96d01010 13:52:07.912: debug : remoteIO:9886 : Do proc=1 serial=1 length=40 wait=(nil) 13:52:07.912: debug : remoteIO:9961 : We have the buck 1 0xe671b0 0xe671b0 13:52:07.912: debug : remoteIODecodeMessageLength:9314 : Got length, now need 56 total (52 more) 13:52:07.912: debug : remoteIOEventLoop:9812 : Giving up the buck 1 0xe671b0 (nil) 13:52:07.912: debug : remoteIO:9990 : All done with our call 1 (nil) 0xe671b0 13:52:07.912: debug : remoteIO:9886 : Do proc=110 serial=2 length=28 wait=(nil) 13:52:07.912: debug : remoteIO:9961 : We have the buck 110 0xe671b0 0xe671b0 13:52:07.913: debug : remoteIODecodeMessageLength:9314 : Got length, now need 76 total (72 more) 13:52:07.913: debug : remoteIOEventLoop:9812 : Giving up the buck 110 0xe671b0 (nil) 13:52:07.913: debug : remoteIO:9990 : All done with our call 110 (nil) 0xe671b0 13:52:07.913: debug : doRemoteOpen:922 : Auto-probed URI is qemu:///system 13:52:07.913: debug : doRemoteOpen:941 : Adding Handler for remote events 13:52:07.913: debug : doRemoteOpen:948 : virEventAddHandle failed: No addHandleImpl defined. continuing without events. 13:52:07.913: debug : do_open:1249 : driver 4 remote returned SUCCESS 13:52:07.913: debug : do_open:1269 : network driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1269 : network driver 1 VBOX returned DECLINED 13:52:07.913: debug : do_open:1269 : network driver 2 remote returned SUCCESS 13:52:07.913: debug : do_open:1288 : interface driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1288 : interface driver 1 remote returned SUCCESS 13:52:07.913: debug : do_open:1308 : storage driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1308 : storage driver 1 VBOX returned DECLINED 13:52:07.913: debug : do_open:1308 : storage driver 2 remote returned SUCCESS 13:52:07.913: debug : do_open:1328 : node driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1328 : node driver 1 remote returned SUCCESS 13:52:07.913: debug : do_open:1355 : secret driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1355 : secret driver 1 remote returned SUCCESS 13:52:07.913: debug : do_open:1375 : nwfilter driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1375 : nwfilter driver 1 remote returned SUCCESS 13:52:07.913: debug : virDomainLookupByName:2154 : conn=0xe61390, name=i00cn1011 13:52:07.913: debug : remoteIO:9886 : Do proc=23 serial=3 length=44 wait=(nil) 13:52:07.913: debug : remoteIO:9961 : We have the buck 23 0xe671b0 0xe671b0 13:52:07.913: debug : remoteIODecodeMessageLength:9314 : Got length, now need 92 total (88 more) 13:52:07.913: debug : remoteIOEventLoop:9812 : Giving up the buck 23 0xe671b0 (nil) 13:52:07.913: debug : remoteIO:9990 : All done with our call 23 (nil) 0xe671b0 13:52:07.913: debug : virGetDomain:382 : New hash entry 0xe5da00 13:52:07.913: debug : virConnectOpenAuth:1498 : name=qemu+ssh://user@computer2/session, auth=0x7f3c96c6c7a0, flags=0 13:52:07.913: debug : do_open:1204 : name "qemu+ssh://user@computer2/session" to URI components: scheme qemu+ssh opaque (null) authority (null) server computer2 user user port 0 path /session 13:52:07.913: debug : do_open:1243 : trying driver 0 (Test) ... 13:52:07.913: debug : do_open:1249 : driver 0 Test returned DECLINED 13:52:07.913: debug : do_open:1243 : trying driver 1 (Xen) ... 13:52:07.913: debug : do_open:1249 : driver 1 Xen returned DECLINED 13:52:07.913: debug : do_open:1243 : trying driver 2 (OPENVZ) ... 13:52:07.913: debug : do_open:1249 : driver 2 OPENVZ returned DECLINED 13:52:07.913: debug : do_open:1243 : trying driver 3 (VBOX) ... 13:52:07.913: debug : do_open:1249 : driver 3 VBOX returned DECLINED 13:52:07.913: debug : do_open:1243 : trying driver 4 (remote) ... 13:52:07.913: debug : doRemoteOpen:564 : proceeding with name = qemu:///session 13:52:07.914: debug : virExecWithHook:712 : ssh -l user computer2 sh -c 'nc -q 2>&1 | grep -q "requires an argument";if [ $? -eq 0 ] ; then CMD="nc -q 0 -U /var/run/libvirt/libvirt-sock";else CMD="nc -U /var/run/libvirt/libvirt-sock";fi;eval "$CMD";' 13:52:07.914: debug : remoteIO:9886 : Do proc=66 serial=0 length=28 wait=(nil) 13:52:07.914: debug : remoteIO:9961 : We have the buck 66 0xeaabd0 0xeaabd0 13:52:08.006: debug : remoteIODecodeMessageLength:9314 : Got length, now need 36 total (32 more) 13:52:08.006: debug : remoteIOEventLoop:9812 : Giving up the buck 66 0xeaabd0 (nil) 13:52:08.006: debug : remoteIO:9990 : All done with our call 66 (nil) 0xeaabd0 13:52:08.006: debug : remoteIO:9886 : Do proc=1 serial=1 length=56 wait=(nil) 13:52:08.006: debug : remoteIO:9961 : We have the buck 1 0xeaabd0 0xeaabd0 13:52:08.007: debug : remoteIODecodeMessageLength:9314 : Got length, now need 28 total (24 more) 13:52:08.007: debug : remoteIOEventLoop:9812 : Giving up the buck 1 0xeaabd0 (nil) 13:52:08.007: debug : remoteIO:9990 : All done with our call 1 (nil) 0xeaabd0 13:52:08.007: debug : doRemoteOpen:941 : Adding Handler for remote events 13:52:08.007: debug : doRemoteOpen:948 : virEventAddHandle failed: No addHandleImpl defined. continuing without events. 13:52:08.007: debug : do_open:1249 : driver 4 remote returned SUCCESS 13:52:08.007: debug : do_open:1269 : network driver 0 Test returned DECLINED 13:52:08.007: debug : do_open:1269 : network driver 1 VBOX returned DECLINED 13:52:08.007: debug : do_open:1269 : network driver 2 remote returned SUCCESS 13:52:08.007: debug : do_open:1288 : interface driver 0 Test returned DECLINED 13:52:08.007: debug : do_open:1288 : interface driver 1 remote returned SUCCESS 13:52:08.007: debug : do_open:1308 : storage driver 0 Test returned DECLINED 13:52:08.007: debug : do_open:1308 : storage driver 1 VBOX returned DECLINED 13:52:08.007: debug : do_open:1308 : storage driver 2 remote returned SUCCESS 13:52:08.007: debug : do_open:1328 : node driver 0 Test returned DECLINED 13:52:08.007: debug : do_open:1328 : node driver 1 remote returned SUCCESS 13:52:08.007: debug : do_open:1355 : secret driver 0 Test returned DECLINED 13:52:08.007: debug : do_open:1355 : secret driver 1 remote returned SUCCESS 13:52:08.007: debug : do_open:1375 : nwfilter driver 0 Test returned DECLINED 13:52:08.007: debug : do_open:1375 : nwfilter driver 1 remote returned SUCCESS 13:52:08.007: debug : virDomainMigrate:3517 : domain=0xe5da00, dconn=0xe62b00, flags=65, dname=(null), uri=(null), bandwidth=0 13:52:08.008: debug : remoteIO:9886 : Do proc=60 serial=4 length=32 wait=(nil) 13:52:08.008: debug : remoteIO:9961 : We have the buck 60 0xeaac10 0xeaac10 13:52:08.008: debug : remoteIODecodeMessageLength:9314 : Got length, now need 60 total (56 more) 13:52:08.008: debug : remoteIOEventLoop:9812 : Giving up the buck 60 0xeaac10 (nil) 13:52:08.008: debug : remoteIO:9990 : All done with our call 60 (nil) 0xeaac10 13:52:08.008: debug : remoteIO:9886 : Do proc=60 serial=5 length=32 wait=(nil) 13:52:08.008: debug : remoteIO:9961 : We have the buck 60 0xeaac10 0xeaac10 13:52:08.008: debug : remoteIODecodeMessageLength:9314 : Got length, now need 60 total (56 more) 13:52:08.008: debug : remoteIOEventLoop:9812 : Giving up the buck 60 0xeaac10 (nil) 13:52:08.008: debug : remoteIO:9990 : All done with our call 60 (nil) 0xeaac10 13:52:08.008: debug : remoteIO:9886 : Do proc=60 serial=2 length=32 wait=(nil) 13:52:08.008: debug : remoteIO:9961 : We have the buck 60 0xeaac10 0xeaac10 13:52:08.009: debug : remoteIODecodeMessageLength:9314 : Got length, now need 32 total (28 more) 13:52:08.009: debug : remoteIOEventLoop:9812 : Giving up the buck 60 0xeaac10 (nil) 13:52:08.009: debug : remoteIO:9990 : All done with our call 60 (nil) 0xeaac10 13:52:08.009: debug : remoteIO:9886 : Do proc=14 serial=6 length=68 wait=(nil) 13:52:08.009: debug : remoteIO:9961 : We have the buck 14 0xeaac10 0xeaac10 13:52:08.009: debug : remoteIODecodeMessageLength:9314 : Got length, now need 2540 total (2536 more) 13:52:08.009: debug : remoteIOEventLoop:9812 : Giving up the buck 14 0xeaac10 (nil) 13:52:08.010: debug : remoteIO:9990 : All done with our call 14 (nil) 0xeaac10 13:52:08.010: debug : virDomainGetInfo:3017 : domain=0xe5da00, info=0x7fff102893e0 13:52:08.010: debug : remoteIO:9886 : Do proc=16 serial=7 length=64 wait=(nil) 13:52:08.010: debug : remoteIO:9961 : We have the buck 16 0xeaac10 0xeaac10 13:52:08.010: debug : remoteIODecodeMessageLength:9314 : Got length, now need 88 total (84 more) 13:52:08.010: debug : remoteIOEventLoop:9812 : Giving up the buck 16 0xeaac10 (nil) 13:52:08.010: debug : remoteIO:9990 : All done with our call 16 (nil) 0xeaac10 13:52:08.010: debug : remoteIO:9886 : Do proc=108 serial=3 length=2536 wait=(nil) 13:52:08.010: debug : remoteIO:9961 : We have the buck 108 0xeaac10 0xeaac10 13:52:08.291: debug : remoteIODecodeMessageLength:9314 : Got length, now need 68 total (64 more) 13:52:08.291: debug : remoteIOEventLoop:9812 : Giving up the buck 108 0xeaac10 (nil) 13:52:08.291: debug : remoteIO:9990 : All done with our call 108 (nil) 0xeaac10 13:52:08.291: debug : remoteIO:9886 : Do proc=62 serial=8 length=120 wait=(nil) 13:52:08.291: debug : remoteIO:9961 : We have the buck 62 0xeaac10 0xeaac10 13:52:38.000: debug : remoteIODecodeMessageLength:9314 : Got length, now need 208 total (204 more) 13:52:38.000: debug : remoteIOEventLoop:9812 : Giving up the buck 62 0xeaac10 (nil) 13:52:38.000: debug : remoteIO:9990 : All done with our call 62 (nil) 0xeaac10 13:52:38.000: debug : remoteIO:9886 : Do proc=109 serial=4 length=92 wait=(nil) 13:52:38.000: debug : remoteIO:9961 : We have the buck 109 0xeaac10 0xeaac10 13:52:38.211: debug : remoteIODecodeMessageLength:9314 : Got length, now need 120 total (116 more) 13:52:38.211: debug : remoteIOEventLoop:9812 : Giving up the buck 109 0xeaac10 (nil) 13:52:38.211: debug : remoteIO:9990 : All done with our call 109 (nil) 0xeaac10 13:52:38.211: debug : virConnectClose:1524 : conn=0xe62b00 13:52:38.211: debug : virUnrefConnect:294 : unref connection 0xe62b00 1 13:52:38.211: debug : remoteIO:9886 : Do proc=2 serial=5 length=28 wait=(nil) 13:52:38.211: debug : remoteIO:9961 : We have the buck 2 0xeaac10 0xeaac10 13:52:38.212: debug : remoteIODecodeMessageLength:9314 : Got length, now need 28 total (24 more) 13:52:38.212: debug : remoteIOEventLoop:9812 : Giving up the buck 2 0xeaac10 (nil) 13:52:38.212: debug : remoteIO:9990 : All done with our call 2 (nil) 0xeaac10 13:52:38.212: debug : virReleaseConnect:249 : release connection 0xe62b00 13:52:38.212: debug : virDomainFree:2242 : domain=0xe5da00 13:52:38.212: debug : virUnrefDomain:463 : unref domain 0xe5da00 i00cn1011 1 13:52:38.212: debug : virReleaseDomain:416 : release domain 0xe5da00 i00cn1011 4dd247bc-533a-db0d-f1e5-f1310169e62f 13:52:38.213: debug : virReleaseDomain:433 : unref connection 0xe61390 2 error: Timed out during operation: cannot acquire state change lock 13:52:38.213: debug : virConnectClose:1524 : conn=0xe61390 13:52:38.213: debug : virUnrefConnect:294 : unref connection 0xe61390 1 13:52:38.213: debug : remoteIO:9886 : Do proc=2 serial=9 length=28 wait=(nil) 13:52:38.213: debug : remoteIO:9961 : We have the buck 2 0xe671b0 0xe671b0 13:52:38.213: debug : remoteIODecodeMessageLength:9314 : Got length, now need 56 total (52 more) 13:52:38.213: debug : remoteIOEventLoop:9812 : Giving up the buck 2 0xe671b0 (nil) 13:52:38.213: debug : remoteIO:9990 : All done with our call 2 (nil) 0xe671b0 13:52:38.213: debug : virReleaseConnect:249 : release connection 0xe61390

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Re: [libvirt-users] want to access the page file of VM from host on Xen platform
by Eric Blake 09 Feb '12

09 Feb '12

[re-adding the list, so others may benefit from the answers] On 02/09/2012 02:00 PM, Irfan Ahmed wrote: > thanks Eric. Just for clarification, if the page is swaped out from RAM to HDD, will virDomainMemoryPeek functionalso retrive the block of size 'size' from that too or it is only restricted to the pages exist in RAM. virDomainMemoryPeek is limited to reading what is in the guest's RAM. As I said earlier, if you are interested in reading what is in the guest's disk, you might find libguestfs to be a more powerful tool. > > > Is there any example program that uses virDomainMemoryPeek function. Alas, no one has yet wired up virsh to call virDomainMemoryPeek (patches welcome), and I don't personally have any example programs that use it. Rich Jones might have some better ideas (as both author of libguestfs, and as the implementer of virDomainMemoryPeek). -- Eric Blake eblake(a)redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org

1 0

[libvirt-users] want to access the page file of VM from host on Xen platform
by Irfan Ahmed 09 Feb '12

09 Feb '12

Is there a way to access swap memory or page file of a virtual machine from host. I am using Xen and want to access the page file contents of my windows XP SP2 virtual machine from dom0. Please do tell me if there is already a tool that could provide this functionality. Any help is appreciated. Thanks and regards, Irfan

2 1

[libvirt-users] bad IO on VM
by Akendo 09 Feb '12

09 Feb '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I have to create some VM. I using KVM for it, manage by libvirtd. The problem of my is that the IO is very bad. I'm nut sure, but I using currently vmdk. Could this be the problem? My settings for the VM is: vitrio driver vmdk no cache It's so bad that the Oracle DB can't work efficient. http://pastebin.com/raw.php?i=sDyvcJmB so far akendo -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJPM5NGAAoJEARqOhiQNM7ZQKMIAIVo9+SYmSrJAIooB0xObSEz ERmMANdkaA7tLGBWaSvKTh5Gg0d3NdP9P1aCIS38OXBBKxqy2NRcksgMikJmlaVp DitLHsSKKLNpBZpGe9xBvqrNCbJVdFLmWIjYk+WEBWXlxHFYob9FuSdejQ53JKKI mfLbcfhWb/6mEfcgkWVAWh9PumuRKZ8YLwWOfj/qJhkhnJOfsusai8Ns+TfMpO7s M72d2RYknpyXiNEJSwUIDlEl0OHqStG3T4+Tpx8Wmoqfs+cm4Hklca1GFGV/Wao2 aPYdkLYvMamAMyN8tB2I0c9MXXUQ8mxgruJReHM9NUYoX4iIwIazElPcZBp4FWI= =MDJL -----END PGP SIGNATURE-----

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[libvirt-users] serial console with virt-install
by Felix Blanke 08 Feb '12

08 Feb '12

Hello, sorry for bother you again. I'm new to kvm and libvirt, that's why my next question is maybe some sort of noob question :) I have a headless server (no X at all, just ssh) and want to run some virtual machines on it. I have kvm etc. all set up. When doing something like virt-install --connect qemu:///system -n template -r 1024 --disk path=/data/vm/template.qcow2,format=qcow2 -c /data/vm/livedvd-amd64-multilib-2012.iso --os-type linux -v --network=bridge:br0 --virt-type kvm --arch x86_64 --graphics none the vm starts Starting install... Creating domain... Connected to domain template Escape character is ^] That's it, no more output. I see two threads running, each takes up 100% cpu. I tried to help myself via google and read a lot hints like "you need to setup your guest to get a serial console...", but that's not possible when running a fresh vm. All I want to do is getting some sort of console from the vm to start the installation with the given .iso file. Could someone lead me into the right direct? A link to an explanation would be more then enough :) Thanks for your help. Kind regards, Felix Blanke

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