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Lubo159
Contributor
Contributor

Unable to generate a VMkernel zdump from dump file

Coredump file configured:

[root@zhost1:~] esxcli system coredump file get
  Active: /vmfs/volumes/5c502d18-996b2376-d466-a41f72d330a9/vmkdump/zhost1-vmkdump.dumpfile
  Configured: /vmfs/volumes/5c502d18-996b2376-d466-a41f72d330a9/vmkdump/zhost1-vmkdump.dumpfile

No coredump partition or network server configured:

[root@zhost1:~] esxcli system coredump partition get
  Active:
  Configured:
[root@zhost1:~] esxcli system coredump network get
  Enabled: false
  Host VNic:
  Is Using IPv6: false
  Network Server IP:
  Network Server Port: 0

When I try to extract the vmkernel zdump:

[root@zhost1:~] esxcfg-dumppart --file --copy --devname /vmfs/volumes/5c502d18-996b2376-d466-a41f72d330a9/vmkdump/zhost1-vmkdump.dumpfile
--zdumpname /vmfs/volumes/STORE/zhost1-vmkernel-zdump
DiagnosticPartition: Unable to copy the dump file: WARNING: Start offset less than header size!

Host details:

ESXi670-201912001

Build 15160138

Configured coredump file by following https://kb.vmware.com/s/article/2077516 and tried to generate the log file by following https://kb.vmware.com/s/article/2081902

Does anyone know why I'm seeing that error and unable to extract the log?

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doma2k
Contributor
Contributor

Hi Lubo159,

Sorry to hear this. I have the same behavior as you described with ESXi 7.0u1c. Did you manage to find a workaround in the end?

Thanks

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