To extract the log file from a vmkernel-zdump file:
Find the vmkernel-zdump file in the /root/ or /var/core/ directory:
# ls /root/vmkernel* /var/core/vmkernel*
/var/core/vmkernel-zdump-073108.09.16.1
Use the vmkdump or esxcfg-dumppart utility to extract the log. For example:
# vmkdump -l /var/core/vmkernel-zdump-073108.09.16.1
created file vmkernel-log.1
# esxcfg-dumppart -L /var/core/vmkernel-zdump-073108.09.16.1
created file vmkernel-log.1
The vmkernel-log.1 file is plain text, though may start with null characters. Focus on the end of the log, which is similar to:
https://kb.vmware.com/kb/1006796