Created attachment 520997 [details]
ifcfg-*, screenshot, nc output
Description of problem:
Configure netconsole in vlan network, reboot rhevh got hang at shutdown the vlan sub-interface (eth0.20).
repeat the error: "unregister_netdevice: waiting for rhevm to become free. Usage count =1".
Version-Release number of selected component (if applicable):
Steps to reproduce:
1. install rhevh and configure netconsole.
2. after boot into rhevh and reboot
1. it hang at shutdown the vlan sub-interface.
1. reboot successfully.
Sometimes, after configure netconsole and reboot the os, it repeated reboot automatically.
There is a known issue about netconsole does not support in vlan network in 5.5.
But I can see the output on netconsole server after configure netconsole in 5.7(see attached file "nc"), so I don't think that know issue still exists in 5.7.
after configure netconsole, please reboot twice if did not met the hang issue at the first time.
It not regression bug , test on 5.7-20110824.0 and 5.7-20110725.1, both can reproduce this issue.
The same issue occurs in rhev-hypervisor-5.8-20111019.0.el5.