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Manually regenerating core dump files

Posted on 2014-04-17
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Last Modified: 2014-05-26
I am trying to get the core dump files for VMware support but I am having a hard time. I am trying to follow this KB.

http://kb.vmware.com/selfservice/search.do?cmd=displayKC&externalId=1002769

I ran this
esxcfg-dumppart –t

I got this
naa.600508b100103956595531524f330100:7
The best I can figure the above is this datastore “esx02-local01” or "51b1050b-27757685-6aa9-1cc1de20bdaa"

I changed directory to here.
cd /vmfs/volumes/51b1050b-27757685-6aa9-1cc1de20bdaa/

Then I ran this
esxcfg-dumppart --copy --devname "/vmfs/devices/disks/naa.600508b100103956595531524f330100:7" --zdumpname /vmfs/volumes/esx02-local01/filename.1

And I got this.
Error running command. Unable to copy the dump partition: Couldn't find a valid VMKernel dump file. Dump partition might be uninitialized.

Background Esxi 5.5 U1 HP Build. DL380 G6

Any help would be most appreciated.
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Question by:RickEpnet
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Expert Comment

by:Zephyr ICT
ID: 40008493
Did you try the command with another destination datastore, local or on NFS or something (if one available)?

e.g:

esxcfg-dumppart --copy --devname "/vmfs/devices/disks/naa.600508b100103956595531524f330100:7" --zdumpname /vmfs/volumes/esx02-local02/filename.1

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by:RickEpnet
ID: 40008889
That is a local datastore.
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Expert Comment

by:Zephyr ICT
ID: 40008895
Yes, I know, but I just wanted to know if the command works if you use another datastore than the one you used in your command...
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Author Comment

by:RickEpnet
ID: 40009454
I tried this I got the same message.

esxcfg-dumppart --copy --devname "/vmfs/devices/disks/naa.600508b100103956595531524f330100:7" --zdumpname /vmfs/volumes/esx02-local01/dump.log
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Expert Comment

by:Zephyr ICT
ID: 40009482
I see no difference in your command? You should check if there's enough room on the datastore you want the log to be saved to, do you have only 1 datastore? You can't save to another one? I'm not saying it's the solution but we need to rule out everything.
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Author Comment

by:RickEpnet
ID: 40009540
This one was esx02-local01 the first one was esx02-local02
One was 01 the other is 02
There is hundreds of GB on 02 and 30 GB on 01
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Expert Comment

by:Zephyr ICT
ID: 40009543
Ok, thanks ... Did the ESXi server ever have a Purple Screen before?
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Author Comment

by:RickEpnet
ID: 40009550
Yes this has happened 2 or 3 times.
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Expert Comment

by:Zephyr ICT
ID: 40009573
Is this a fresh install or an upgrade?
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Expert Comment

by:Zephyr ICT
ID: 40009601
The reason I'm asking is because the coredump partition for new installations of ESXi 5.5 and later is 2.5GB, as it was previous 100mb...

So if it's an upgrade it might be an issue with the coredump partition not being big enough...
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by:RickEpnet
ID: 40039922
The one that has been crashing the most is a clean install.
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RickEpnet earned 0 total points
ID: 40080824
No answer So I want to close this question.

Thanks for the effort.
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Author Closing Comment

by:RickEpnet
ID: 40090619
Your Answer:
No answer So I want to close this question.

Thanks for the effort.
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