Cannot remove dumpfile created volume vmfs - 5.5

I have a 5.5 with only local storage server I recently upgraded to 5.1.

A few days ago I had inventoried all my VM folders on the next partition:

/ vmfs/volumes/comments.

Today, when cleaning latest virtual machines, I find the following:

/vmfs/volumes/guest/vmkdump/44454C4C-4400-1048-805A-C7C04F4C4631.dumpfile

I don't know what created this... I understand there dumpfiles that can be created on PSODs, but I can't find any reference to a real folder called "vmkdump."

When I try to delete it, I get the following:

/ vmfs/volumes/524f80a6-f18c10c7-2 c 16-001e4f204bc4/vmkdump # rm - rf 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile

RM: cannot remove ' 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile': device or resource busy

I looked at various KBs and I can't understand it:

-lsof does not list this file or directory

-all virtual machines have been cut (maintenance mode)

-the server has been restarted several times

I found the following info that may be useful:

VMkernel.log shows (apparently at the start):

VMkernel.log:2013 - 10-17 T 03: 13:28.048Z cpu3:70444) FS3: 196: START 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 13:28.048Z cpu3:70444) FS3: 198: END 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 17:10.392Z cpu6:70981) FS3: 196: START 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 17:10.392Z cpu6:70981) FS3: 198: END 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 33:22.900Z cpu0:73786) FS3: 196: START 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 33:22.900Z cpu0:73786) FS3: 198: END 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 40:31.233Z cpu7:75668) FS3: 196: START 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 40:31.233Z cpu7:75668) FS3: 198: END 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 41:25.409Z cpu3:75805) FS3: 196: START 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 03: 41:25.409Z cpu3:75805) FS3: 198: END 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 04: 36:02.444Z cpu3:36299) FS3: 196: START 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

VMkernel.log:2013 - 10-17 T 04: 36:02.444Z cpu3:36299) FS3: 198: END 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile >

Also, I get the following with vmkfstools result:

/ vmfs/volumes/524f80a6-f18c10c7-2 c 16-001e4f204bc4/vmkdump # vmkfstools d 44454C4C-4400-1048-805 a - C7C04F4C4631.dumpfile

Lock [type 10 c 00001 compensate 206995456 v 2409, hb offset 3920384

GEN 27, mode 1, owner 525f6851-c5108b26 -001e4f204bc4 mtime ce23 - 645

[num 0 gblnum 0 gblgen 0 gblbrk 0]

< 4, 465, 104 > addr gen 2238, links 1, type reg, flags 0, uid 0, gid 0, mode 100666

Len 166723584, n. b. 159 tbz 0, 0, newSinceEpoch 159 cow, mrz 1, bs 1048576

According to KB 10051, the number of updates in bold above is intended to indicate the MAC address of the owner of the lock.  Which makes absolutely no sense to me, that's the address, it belongs to the second internal NETWORK card in this system:

list/vmfs/volumes/524f80a6-f18c10c7-2 c 16-001e4f204bc4/vmkdump # esxcli network nic

Name PCI Device Driver link speed Duplex MAC address MTU Description

------  -------------  ------  ----  -----  ------  -----------------  ----  -------------------------------------------------------------

vmnic0 bnx2 up to 1000 Full 00:1e:4f:20:4 b 0000:003:00.0: c2 1500 Broadcom Broadcom NetXtreme II BCM5708 1000Base-T Corporation

vmnic1 bnx2 0000:007:00.0 half low 0 00:1e:4f:20:4 b: c4 1500 Broadcom Broadcom NetXtreme II BCM5708 1000Base-T Corporation

As you can see that this NETWORK adapter is in down state... it is not plugged in and has never been used (recently) for anything.

EDIT - Holy coincidence Batman!  It seems that the Mac address of my second card happens to match exactly the last UUID of some of VMFS volumes section!

/ vmfs/volumes # esxcli list of file system storage

Mount a Volume mounted UUID Type size free name

-------------------------------------------------  -----------  -----------------------------------  -------  ------  -------------  -------------

/ vmfs/volumes/524f80a6-f18c10c7-2 c 16-001e4f204bc4 invited true VMFS of the 524f80a6-f18c10c7-16-001e4f204bc4-5 1999038840832 2 c 1153078132736

swap/vmfs/volumes/5250f9ba-1c2084a1-ccc8-001e4f204bc4 5250f9ba-1c2084a1-ccc8-001e4f204bc4 true VMFS-5 493384368128 492335792128

/ vmfs/volumes/52583d 27-570697be-161 b - 001e4f204bc4 52583 d 27-570697be-161 b - real 001e4f204bc4 4293591040 4161273856 vfat

/ vmfs/volumes/d789b775-b425486f-ac6f-1a3cee25ec3d d789b775-b425486f-ac6f-1a3cee25ec3d true 261853184 13754368 vfat

/ vmfs/volumes/492adf74-59b63f60-76FA-01385be4c120 492adf74-59b63f60-76fa-01385be4c120 true 261853184 97005568 vfat

/ vmfs/volumes/506469eb-d746eb51-3D 506469eb-d746eb51 - 3 d 04-001e4f204bc4 04-001e4f204bc4 true 299712512 99147776 vfat

If the NIC information above seem to be a loophole... and the owner of the directory in question seems to be simply the volume itself (?)

I'm worried because not only I want to remove this file from my store of data (or at least understand the need for it), but because of the small cryptic information that I can see so far I don't think that sounds a coredump is / was being created.

To the best of my knowledge, this system has no other problems, it starts very well and apart from some other errors not apparent, miners, I saw in newspapers, I know not what could be the cause.

Advice is very welcome as to what is happening!

Yes NightWing... the coredump file is 5.5

Size of the system increases lead to larger ESXi unannounced dumps core. The partition of coredump for new installations of ESXi 5.5 is 2.5 GB. For upgrades from previous versions of ESXi 5.5, the core dump partition is limited to 100 MB for ESXi crashes. For many large systems, this limit is not enough space and dump logs are truncated. The limit has an impact on the ability of triage ESXi system issues and the core.

Updates with limits on partitions of 100 MB, during the boot process, the system might create a dump file. If it does not create a dump file, you can create it manually with the command of file coredump esxcli system.

The partition which added isn't the vmfs partition, but since the partition created during installation esxi coredump.

No, you can not have created /vmkdump if you do not have a coredump in vmfs.

If you think, that your esxi broke down somewhere, look at/var/core... If any coredump is, your Inbox may have thrown some time, otherwise you're good to go.

In addition, in the case of vmfs partition coredump configured, once you have deleted the file, a new file will be in place if and only if your box has panicked and dumped core.

Documentation Centre of vSphere 5.5

Tags: VMware

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