What UCS Version are you currently running Walter?
Also Does the error look like the following message below;
affected object: sys/mgmt-entity-B
code: E4196536
cause: device-shared-storage-IO
Description: device Serial Number, error accessing shared storage
If that is the error there is no need to worry a lot of people see this and think it is storage related it is not. The shared storage errors are related to the IOMs not able to communicate to the SEEPROM. This error happens based on the Hardware design of the SEEPROMs and the chassis.
However, the bug related to this defect is;
https://tools.cisco.com/bugsearch/bug/CSCtu17144/?reffering_site=dumpcr
There is two possible scenarios when this happens either;
- A) If the error accessing shared-storage fault is currently in cleared state and does not raise again, do not apply the work around and do not do anything.
- B) If the error accessing shared-storage fault is raised state and is never cleared, or the fault keeps flip - comes (raised) and goes (cleared), try the following:
- SSH to your Fabric Interconnect
- Switch to side A local-management:
connect local-mgmt a
- Connect to side A IOM of your chassis:
connect iom <chassis #>
- Enter this command to find out if it's active or not:
show platform soft cmc thermal status | grep status:
=> If it says PASSIVE, you need to restart this IOM (IOM 1 on fabric A)
via UCSM, if it says ACTIVE, it's the other side (IOM 2 on fabric B) that
needs to be reset.
- To do the reset, please just go Equipment > Chassis > Chassis <#> > IO
Modules > IO Module 1/2 > General tab > Reset IO Module
If this doesn't work the full work around would be below;
Remove PSU1 let sit for 2 minutes replace, wait 10 seconds confirm PSU1 has power, Move to PSU2
Remove PSU2 let sit for 2 minutes replace, wait 10 seconds has power, Move to PSU3
Remove PSU3 let sit for 2 minutes replace, wait 10 seconds PSU3 has power, Move to PSU4
Remove PSU4 let sit for 2 minutes replace, wait 10 seconds PSU4 has power, Move to Fan1
Remove Fan1 let sit for 30 seconds replace, wait 10 seconds confirm Fan1 has power, Move to Fan2
Remove Fan2 let sit for 30 seconds replace, wait 10 seconds confirm Fan2 has power, Move to Fan3
Remove Fan3 let sit for 30 seconds replace, wait 10 seconds confirm Fan3 has power, Move to Fan4
Remove Fan4 let sit for 30 seconds replace, wait 10 seconds confirm Fan4 has power, Move to Fan5
Remove Fan5 let sit for 30 seconds replace, wait 10 seconds confirm Fan5 has power, Move to Fan6
Remove Fan6 let sit for 30 seconds replace, wait 10 seconds confirm Fan6 has power, Move to Fan7
Remove Fan7 let sit for 30 seconds replace, wait 10 seconds confirm Fan7 has power, Move to Fan8
Remove Fan8 let sit for 30 seconds replace, wait 10 seconds confirm Fan8 has power, Move to IO MOD1
Remove IO Mod 1 let sit for 5 minutes replace, confirm that IO MOD is UP and Running before you reseat IOMOD 2
Once IO MOD1 is Up and Running finally reseat IO MOD 2 let sit for 5 minutes, and place it back into the chassis.
This is the complete reseat process to clear the i2c bus.
