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Description of problem:
These were working dependably on 7.2. After the 7.3 update the VM will start find, shutdown fine, but randomly hang on reboot.

Version-Release number of selected component (if applicable):
libvirt-2.0.0-10.el7.x86_64

How reproducible:
Random, but frequent

Steps to Reproduce:
1. Reboot a VM
2.
3.

Actual results:
VM will randomly hangs during BIOS. It looks like a machine that has an empty boot block, a blinking cursor in the upper left corner.

Expected results:
The VM boots

Additional info:
The kernel doesn't seem to make any difference. We have tried with both the released 7.3 kernel and the 7.2 kernel we had been running.

sbognann has potentially identified seabios-bin as the culprit.

Hi,

could you please provide libvirt debug log and qemu log of the vm? But from the description it does not look like a libvirt issue...

Thanks.

Attached is a log of me replicating the problem with a VM called
examserver-ex300-QA-xxxx-xxxx-xxxx-xxxxxxxxxxx.  While the log was
running, I ran 'init 6' from within the VM and it hung.  I then stopped
it, started it and ran init 6 again and it hung again.  Probably not
shown in the log is that the VM will sometimes hang and sometimes show
in virsh as paused but unresumable:

[root@9610 ~]# virsh list
 Id    Name                           State
----------------------------------------------------
 3     examserver-ex300-QA-xxxx-xxxx-xxxx-xxxxxxxxxxx paused

[root@9610 ~]# virsh resume 3
error: Failed to resume domain 3
error: internal error: unable to execute QEMU command 'cont': Resetting
the Virtual Machine is required

Also, as previously noted, we have found that downgrading seabios-bin
from seabios-bin-1.9.1-5.el7.noarch to seabios-bin-1.7.5-11.el7.noarch
solves the problem.

Thanks,
	Greg

Created attachment 1220678 [details]
Debug of failed reboots

*** This bug has been marked as a duplicate of bug 1394469 ***