Procedure: VM Hung-Check out the output of 'ps -s | grep < VM's name >' multiple times.

-It will display a list of worlds. Check whether for a single world, the state field (3 and 4th field from

left) shows "WAIT" and "SCSI" respectively consistently in all the outputs of the above command

1. vmdumper -l to get the world id for the VM

2. vmdumper < wid-for-a-thread > backtrace < -- log backtrace in vmkernel.log

3. vmdumper < wid-for-a-vm > samples_on

4. vmdumper < wid-for-a-vm > unsync < -- check if vmmcores-unsync-< N >.gz is generated

5. vmdumper < wid-for-a-vm > sync < -- check if vmmcores-< N >.gz is generated

6. vmdumper < wid-for-a-vm > vmx < -- check if vmx-zdump.* is generated

7. vmdumper < wid-for-a-vm > vmx_force < -- check if vmx-zdump.* is generated

8. vmdumper < wid-for-a-vm > suspend_vm < -- check if .vmss is generated

9. vmdumper < wid-for-a-vm > samples_off

10. If step 8 fails, will try to collect the suspended state from the vSphere Client or using the vm-

support command

(see Suspending a virtual machine on ESX/ESXi to collect diagnostic information (2005831) ESXi 5.x

section )

11. Capture host logs with performance snapshots in batch mode using the cmd:

esxtop -a -b -d 5 -n 120 > esxtop.csv

and

vm-support -p

12. Capture Guest OS logs

13. Capture VMRC/Remotemks logs (C:\Users\< USER >\AppData\Local\VMware\vpx)

14. Migrate all the virtual machine from affected host, except virtual machine which is hung.

15.

a. Enable the VMFS file core dumping:

- The VMFS file dump has to be turned on and the core dump has to be redirected to a file. KB article

that explains the process:

http://kb.vmware.com/kb/2077516

b. Then run this command to get the live dump:

localcli --plugin-dir /usr/lib/vmware/esxcli/int/ debug livedump perform

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16. Crash the host using NMI and collect the dump / ESX host log bundle.

See Using hardware NMI facilities to troubleshoot unresponsive hosts

(http://kb.vmware.com/kb/1014767) Can be done from the HP iLO

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