topic Re: Vmware datastores disconnection in VMware Solutions Discussions

Vmware datastores disconnection

deygaurab — Thu, 05 Jun 2025 06:17:48 GMT

Hello Folks,

Today morning many of my vmware datastores lost access to the NetApp array. See one such error below.

Lost access to volume 4fad3686-2f38ba84-fc46-0025b502008f (Deployment-Conversion-PDT3-01) due to connectivity issues.

Recovery attempt is in progress and outcome will be reported shortly.

I checked the storage /etc/messages, SAN switches(my setup is entirely fcp) but could not find anything.. the SAN switches didnt log any port fluctuations nor the filer. Any idea what I could have missd checking?

Cheers

Rahul

Re: Vmware datastores disconnection

deygaurab — Fri, 05 Oct 2012 18:02:26 GMT

to add to it, all the ESX in the fram behaved this way. 70% of its datastores lost connection and then reconnected itself after a while..

Re: Vmware datastores disconnection

deygaurab — Sat, 06 Oct 2012 04:57:14 GMT

any suggestions?

Re: Vmware datastores disconnection

martin_fisher — Sat, 06 Oct 2012 09:45:07 GMT

Anything in the syslog from the NetApp Filer, or the log files from an affected ESX Host at all ?

Re: Vmware datastores disconnection

deygaurab — Sat, 06 Oct 2012 18:36:47 GMT

Hello Martin,

Nothing related to any port logout or LUN reset in the /etc/messages of the filer. I am yet to check the ESX's if they have logged anything...

Cheers

Rahul

Re: Vmware datastores disconnection

cedric_renauld — Sat, 06 Oct 2012 21:33:39 GMT

Hi, Ranul

Have you receive any autosupport during this BREAK ?

Have you the possibility to send us the messages ?

Re: Vmware datastores disconnection

deygaurab — Mon, 08 Oct 2012 09:09:08 GMT

Hi Cedric,

There was no autosupport generated . Neither did anything show up in the /etc/messages log or in the filer console. The below messages are from the Vcenter logs..

Lost access to volume 4e9ee3d1-3ede5480-c3ae-0025b501006f (PrePROD-PAR3-002) due to

connectivity issues. Recovery attempt is in progress and outcome will be reported shortly.

Successfully restored access to volume 4e9ee3d1-3ede5480-c3ae-0025b501006f (PrePROD-PDT) following connectivity issues.

Successfully restored access to volume 4fad3686-2f38ba84-fc46-0025b502008f (Deployment-Conversion-PDT) following connectivity issues.

Lost access to volume 4e9ee3d1-3ede5480-c3ae-0025b501006f (PrePROD-PDT) due to connectivity issues. Recovery attempt is in progress and outcome will be reported shortly.

Lost access to volume 4f704a90-1f470f5c-4df9-0025b501004f (PrePROD-PDT) due to connectivity issues. Recovery

attempt is in progress and outcome will be reported shortly.

Lost access to volume 4fad3686-2f38ba84-fc46-0025b502008f (Deployment-Conversion-PDT) due to

connectivity issues. Recovery attempt is in progress and outcome will be reported shortly.

Not all of the datastores in the ESX disconnected.. say around 50% of the datastores in all the ESX in the farm disconnected and then reconnected itself..and the rest 50% stayed intact without any issues... I am wondering if there could be something from the storage which is not showing up from the message logs of netapp..

Cheers

Rahul

Re: Vmware datastores disconnection

martin_fisher — Mon, 08 Oct 2012 17:31:35 GMT

Last place you could look is in the logs on your switches if any are kept... Unfortunately it could be a hard job to indentify what caused the issue now. Have you logged it with NetApp Support also?

Re: Vmware datastores disconnection

deygaurab — Tue, 09 Oct 2012 18:26:39 GMT

Haven't logged this with NetApp support yet as I do not have any error logs from storage . I checked the switches but could not find any errors.

Cheers

Rahul

Re: Vmware datastores disconnection

CASTROJSEC — Mon, 08 Jul 2013 13:58:32 GMT

Did you ever resolve this or find out what was going wrong? i just now ran into the same issue.

Re: Vmware datastores disconnection

BJBAARSSEN — Thu, 31 Oct 2013 11:03:14 GMT

Hello James,

I found the solution.

This is caused because of wrong FillWords on the 8Gb (Brocade) switch port.

This must be set to "3".

Use the portCfgFillWord (portCfgFillWord <Port#><Mode>) command to configure this setting.

Regards, Barend

Re: Vmware datastores disconnection

CASTROJSEC — Mon, 04 Nov 2013 17:15:05 GMT

Thanks. We use Cisco MDS so I will see what the equivalent is.

Re: Vmware datastores disconnection

SHAILESHVAIDYA — Fri, 21 Mar 2014 13:29:46 GMT

Hello Barand,

Fill word is set to 3, still the same issue. This is not the solution.