Bug 1301860 - vCPU offline hang in real-time guest
vCPU offline hang in real-time guest
Status: NEW
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev (Show other bugs)
7.3
Unspecified Unspecified
medium Severity medium
: rc
: ---
Assigned To: Peter Xu
Pei Zhang
:
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2016-01-26 03:22 EST by Peter Xu
Modified: 2017-07-06 00:34 EDT (History)
10 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Comment 3 Daniel Bristot de Oliveira 2016-02-03 14:34:47 EST
Hi Peter,

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
operations?

Here is a document from support explaining how to capture a vmcore of a VM:

https://access.redhat.com/solutions/39604

We will also need the debuginfo packages of the kernel that was running
on the VM.

Note You need to log in before you can comment on or make changes to this bug.