Hosts disconnect during VMotion

Hi guys, faced with a difficult problem with a cluster and could use some comments: we had issues where one of the hosts (random) enters a disconnected state. If you let it rest enough long IT will return itself. Restart the vcenter services seems to accelerate the process too. Last night I went to put hosts in maintenance mode (to apply the latest patches) and all sorts of bad things that happened. Got to the point where 2 guests are cranked out. So bad a situation that one of the hosts could not return in the cluster, and we had to stop the machines and save them again on the hosts in the cluster. (Pleasure at 03:00). VMware has been a bit confused last night with what was going on so I have to re - engage the next week. Any help / ideas would be very appreciated.

Here is the material / details.

-Execution 5.5 Build 2302651 (ISO specific Dell)

-3 x Dell PowerEdge R730 [boot from Flash] (firmware completely up to date)

-1 x Dell Powervault MD3420 12 GB SAS (two controllers) (current firmware) connectivity

-There is a Dell PowerEdge R730XD directly connected to the MD3420 running Windows 2012R2 / Veeam 8.0 Update 1 for backups

-We are not sure if Veeam could be the cause for it. Trying to get involved them. At the moment we have completely disabled Veeam.

-A putty session to one of the disconnected hosts who had locked up for a restart of management agent came back as if by magic when a veeam replication job has been cancelled (a replicate a computer since the backup repository so I have no idea why that would be important)

-Currently have DRS automation and control applications disabled to mitigate risk

-Start to move workloads to another cluster to reduce the risk

Well, after a lot of torture, here is the solution:

-Drivers that Dell will ship with 5.5U2 latest ESX media are not good. You must use the latest VMWARE drivers for DIS3 12 GB host bus adapters.

-After the pilot on 2 hosts rotation, I tried vmotion and could not reproduce the problem.

-For good measure we have updated the MD3420 to 8.20 firmware which was mainly new features

-VMWARE update latest version

After this experience, we will make some changes to our deployment strategy in order to eliminate a problem like this before the cluster into production if all goes well. We have made several tests of vmotion and storage vmotion before going to the first time, but us did not grow it is quite difficult. Automated DRS kicks and tried once to spend a lot of things at the same time, it is when we started to see these questions. If we had put a lot of pressure on the cluster and observed the vmkernel logs we have observed the error messages.

Couple all of this to try to migrate to Veeam, it makes it difficult to isolate. Once Veeam was arrested and the problems continue that it makes it a lot easier to focus our efforts.

I hope that someone else that this encounter with the LSI solution (HP, Dell, IBM) will benefit from this thread.

Tags: VMware

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--> backtrace[00] rip 000000018018b7fa 
--> backtrace[01] rip 0000000180104c78 
--> backtrace[02] rip 0000000180105f6e 
--> backtrace[03] rip 000000018008ff08 
--> backtrace[04] rip 00000001800418d6 
--> backtrace[05] rip 00000001800445de 
--> backtrace[06] rip 0000000180048382 
--> backtrace[07] rip 00000000004f0ca9 
--> backtrace[08] rip 00000000004f1399 
--> backtrace[09] rip 00007ff7689280df 
--> backtrace[10] rip 00007ff76892f418 
--> backtrace[11] rip 00007ff768931b9a 
--> backtrace[12] rip 00007ff768928257 
--> backtrace[13] rip 00007ff768930d89 
--> backtrace[14] rip 000000000046157e 
--> backtrace[15] rip 000000000055a15a 
--> backtrace[16] rip 00007ff7682b379d 
--> backtrace[17] rip 00007ff7682b4406 
--> backtrace[18] rip 0000000180152544 
--> backtrace[19] rip 00000001801525d1 
--> backtrace[20] rip 0000000180156eec 
--> backtrace[21] rip 00000001801587ba 
--> backtrace[22] rip 0000000180158cfc 
--> backtrace[23] rip 0000000180158e98 
--> backtrace[24] rip 0000000180153ab3 
--> backtrace[25] rip 0000000180154b03 
--> backtrace[26] rip 0000000180154e43 
--> backtrace[27] rip 000000018019d62a 
--> backtrace[28] rip 0000000067642fdf 
--> backtrace[29] rip 0000000067643080 
--> backtrace[30] rip 00007ffdbd7e13d2 
--> backtrace[31] rip 00007ffdbfab5444 
--> 
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    2016-02-24 T 16: [FF904B70 WARNING "hostdstats"] 53:24.435Z GetTranslators [FetchQuickStats] - host-translation vpxd is empty. Removal of the results

    2016-02-24 T 16: 53:24.435Z [verbose 'hostdstats' FF904B70] [PollCurrentStats] Impossible to gather quickStats metric provided host from the host.

    2016-02-24 T 16: [FF925B70 WARNING "hostdstats"] 53:44.436Z GetTranslators [FetchQuickStats] - host-translation vpxd is empty. Removal of the results

    2016-02-24 T 16: 53:44.436Z [verbose 'hostdstats' FF925B70] [PollCurrentStats] Impossible to gather quickStats metric provided host from the host.

    2016-02-24 T 16: 53:44.781Z [verbose 'vpxavpxaInvtHost' FF925B70] [VpxaInvtHost] incrementing master not (181) Genesis: event: VpxaHalEvent::CheckQueuedEvents

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    2016-02-24 T 16: 54:04.437Z [verbose 'hostdstats' FF904B70] [PollCurrentStats] Impossible to gather quickStats metric provided host from the host.

    2016-02-24 T 16: 54:22.151Z [FF925B70 'VpxaHalCnxHostagent' verbose opID = WFU-c9fdb38b] [WaitForUpdatesDone] received reminder

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    2016-02-24 T 16: 54:22.152Z [FF925B70 'VpxaHalCnxHostagent' verbose opID = WFU-c9fdb38b] [WaitForUpdatesDone] Completed reminder

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