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Gateway Fails To Collect Logs Due To 9K MTU Mismatch

Summary: Log collection fails from PowerFlex Gateway

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

The GW takes a long time when performing a log collection and eventually times out. 

An error may be seen as "Invalid LIA session" even though the LIA authentication succeeds in the "Maintain" tab.

LIA authentication can be confirmed if it shows "Native" not Invalid.

The image below shows an SDS with an "Invalid" LIA authentication. 
image.png

 

Cause

The GW's operations.log reports errors stating the command to query the installed components failed due to an Invalid LIA session and a login is required:
 

ERROR operations - Could not run get_info script with copyRepositories=false, collectExceptionOnly=false, liteVersion=false, copyBinaries=false, mdmUsername=admin on node 192.168.152.34 due to: Command failed: Invalid credentials for node 192.168.152.34
ERROR operations - Could not run get_info script with copyRepositories=false, collectExceptionOnly=false, liteVersion=false, copyBinaries=false, mdmUsername=admin on node 192.168.160.13,192.168.152.13 due to: Command failed: Could not query installed components on node 192.168.160.13,192.168.152.13 due to: Invalid LIA session. A login is required
...
ERROR operations - Could not run get_info script with copyRepositories=false, collectExceptionOnly=false, liteVersion=true, copyBinaries=false, mdmUsername=admin on node 192.168.160.15,192.168.152.15 due to: Command failed: Could not query installed components on node 192.168.160.15,192.168.152.15 due to: Invalid LIA session. A login is required

 

The GW's scaleio.log reports errors as shown below reporting an Invalid LIA session:

ERROR c.e.s.s.d.i.c.QueryLiaLdapCommand - Error Failed getting the OS on node 192.168.152.11,192.168.160.11 due to: Invalid LIA session. A login is required executing command .QueryLiaLdapCommand (abort) : com.emc.s3g.scaleio.im.services.installation.connectors.LIANodeConnection.getOsType(LIANodeConnection.java:2665)
....	
ERROR c.e.s.s.d.i.c.QueryLiaLdapCommand - Error Failed getting the OS on node 192.168.160.16,192.168.152.16 due to: Invalid LIA session. A login is required executing command .QueryLiaLdapCommand (abort) : com.emc.s3g.scaleio.im.services.installation.connectors.LIANodeConnection.getOsType(LIANodeConnection.java:2665)

 

Resolution

If the PowerFlex cluster uses a 9K MTU configuration (jumbo frames), then it must be set across all components. This includes elements within a virtual (e.g. VMware) and physical infrastructure.

Verify jumbo frames can be pinged from the GW to SDSs on all data subnets:

ping -M do -s 8972 x.x.x.x



Affected Products

PowerFlex Software
Article Properties
Article Number: 000215508
Article Type: Solution
Last Modified: 14 Sep 2023
Version:  3
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