Red Hat Bugzilla – Bug 1301860
vCPU offline hang in real-time guest
Last modified: 2017-10-11 00:42:46 EDT
There are some known hotplug issues on kernel-rt. For an example, see BZ1267425.
On this BZ I was able to identify the root cause by inspecting a
vmcore, and on these cases, the vmcore is the best tool to understand
why the system hanged.
Can you please capture a vmcore of the VM after it hangs on hotplug
Here is a document from support explaining how to capture a vmcore of a VM:
We will also need the debuginfo packages of the kernel that was running
on the VM.
Peter, this issue has gone with rhel7.5.
After online/offline 100 times using script in Description, both host and guest work well, not any error.
(In reply to Pei Zhang from comment #6)
> Peter, this issue has gone with rhel7.5.
> After online/offline 100 times using script in Description, both host and
> guest work well, not any error.
> Best Regards,
Thanks Pei! Then I'm closing the bug.