LibVMI Xen Event Errors on Linux kernel 4.2

[D'Mita Levy]

I recently downloaded and installed Ubuntu 15 with Kernel 4.2.0 and then ran the event-example.c file. It ran normally and I stopped it and then ran it again about one minute later and go the error:

[root@xenserver-testbed examples]# ./event-example BUNTU15 1631

xc: error: Failed to populate ring pfn

 (16 = Device or resource busy): Internal error

VMI_ERROR: vm_event is (or was) active on this domain

VMI_ERROR: Failed to initialize xen events.

Failed to init LibVMI library.

(process:13363): GLib-CRITICAL **: g_hash_table_destroy: assertion 'hash_table != NULL' failed

VMI_ERROR: Error disabling monitor vm_event ring.

[root@xenserver-testbed examples]#

Is this a problem on my end or with LibVMI?

[Tamas K Lengyel]

What version of Xen are you using?

--
You received this message because you are subscribed to the Google Groups "vmitools" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vmitools+u...@googlegroups.com.
To post to this group, send email to vmit...@googlegroups.com.
Visit this group at https://groups.google.com/group/vmitools.
For more options, visit https://groups.google.com/d/optout.

[D'Mita Levy]

Citrix XenServer Dundee Beta 2: http://xenserver.org/overview-xenserver-open-source-virtualization/prerelease.html to the best of my knowlege they are running Xen Hypervisor 4.6 according to their release blog.

# uname -a Linux xenserver-testbed 3.10.0+0 #1 SMP Thu Sep 17 14:57:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

[Tamas K Lengyel]

What happens if you are re-run event-example? Sometimes it doesn't seem to close the vm_event stuff properly but the second time it resets, so the third run can work properly again.

[D'Mita Levy]

Tamas,

When I re-run the example I get the same error. If I reboot the VM the error goes away and I can run the example only once but after that I keep getting the error. 

Thanks,

D'Mita

[Tamas K Lengyel]

It works fine on my Xen 4.6 server, I don't get the error you have. Can you reproduce the issue? If so, please enable all debug output and post it so we can see what might be going wrong on your rig.

Tamas

[D'Mita Levy]

Tamas,

Which Linux distribution are you using for your Dom0 kernel?

-DMita