I/o problem on connected fcoe device – Dell Brocade Adapters User Manual
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Brocade Adapters Troubleshooting Guide
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FCoE and Fibre Channel problems
2
Action: Verify if the PWWN or NWWN has a zero value using one of these methods:
•
Windows system log or Linux /var/log/messages file displays a port error indicating a zero
PWWN or NWWN.
•
Output from bcu port --query
or NWWN.
•
Advanced Management Module (AMM) Open Fabric Manager (OFM) status page displays
an error status for the corresponding port of the blade.
If values are zero, use BOFM to configure non-zero values for the PWWN and NWWN.
I/O problem on connected FCoE device
NOTE
This issue applies to CNAs and Fabric Adapter ports configured in CNA mode only.
There is an I/O problem on a connected FCoE device.
1. Possible Cause: Link between the adapter and switch is down.
2. Possible Cause: PFC (priority flow control), DCB Map, and FCoE Map is not configured correctly
on the FCoE switch.
Action: Verify configuration using the appropriate Fabric OS command on the attached switch.
Refer to the Fabric OS Command Reference Manual for information.
Action: Configure PFC using the appropriate Fabric OS command on the attached switch while
in switch configuration mode.
3. Possible Cause: Zoning is configured incorrectly on FCoE switch.
Action: Verify zoning configuration on the attached switch using the appropriate Fabric OS
command. Refer to the Fabric OS Command Reference Manual for more information.
I/Os are not failing over immediately on path failure in MPIO setup
When multipath I/O (MPIO) is enabled and input/output operations are not failing over immediately
when a path failure occurs, refer to the following descriptions of possible causes and
recommended actions to help resolve the problem.
Possible Cause: Improper driver mpiomode setting.
Action: Execute the port --query
(which implies zero Path TOV values) or that fcpim MPIO mode is disabled with the expected “Path
TOV” settings (default is 30 seconds).