Red Hat Bugzilla – Bug 856947
Hyper-V guest RHEL5.9 remove and then reload the hv_utils module will cause shutdown and heartbeat service not work
Last modified: 2012-11-20 04:34:23 EST
Created attachment 612371 [details]
Description of problem:
Install a guest rhel5.9 with kernel2.6.18-339.el5 on Hyper-v platform,heartbeat and shutdown service is ok by view the status on Hyper-V manager and click the button"shutdown" on the Hyper-V manager,then on the guest rhel5.9 execute the command "rmmod hv_utils",the heartbeat status on the Hyper-V manger wil become to "lost communication",(hearbeat_and_shutdown.png)click the shutdown button the shutdown button will not work with a pop-up window(hearbeat_and_shutdown.png),then execute the command "modprobe hv_utils""lsmod|grep hv_utils"the modules is loaded for a while,but the status of heartbeat keep "lost communication"and button "shutdown" on Hyper-V manager still keep the window.
Version-Release number of selected component (if applicable):
The Hyper-V guest:rhel5.9 kernel:2.6.18-339.el5(x86_64)
Steps to Reproduce:
1.Install the Hyper-V guest with kernel2.6.18-339.el5
2.login the guest,execute the command "rmmod hv_utils"
3.on the guest,execute the command "modprobe hv_utils"
4.check the status Heartbeat on Hyper-V manager,and shutdown the guest by click Hyper-V manager "shutdown" button.
After step 4,the status for heartbeat is "lost communication",click the Hyper-V manger "shutdown"button cannot shutdown the guest.
when modprobe the hv_utils the status for heartbeat is "ok",click the Hyper-V manger "shutdown"button can shutdown the guest normally.
After reboot the Hyper-V guest,the Heartbeat status on Hyper-V will be ok and shutdown button on Hyper-V function will work.
During the test of kvp deamon, if remove the hv_utils driver and load it again in the guest, fail to get the Linux guest information from GuestIntrinsicExchangeItems on host with the guest hypervkvpd service running. Both x86_64 guest and the i386 guest meet this problem.
[root@localhost ~]# rpm -q hypervkvpd
[root@localhost ~]# service hypervkvpd status
hv_kvp_daemon (pid 8206) is running...
The issue exist on Hyper-V guest rhel5.9 with platform i386,i386PAE,x86_64
Closing this bug, since it looks like a (Windows) host bug that RH cannot fix.