Huawei E9000 Troubleshooting Manual page 113

Huawei Servers
Troubleshooting
Fault Symptom
Some multipath
links of LUNs are
down.
Poor data read/write
performance of
LUNs
Quick Recovery from FC Controller Faults
Table 5-20
procedures of FC controller faults.
Issue 20 (2020-09-25)
Handling Procedure
1. Ensure that the installed lpfc driver and firmware
match the E9000.
2. Check for error codes on FC links between the HBA
and the storage device.
3. Collect the OS message log and check lpfc and
multipath driver information for faults.
4. Collect log information of the switches.
5. Contact the OS multipath driver vendor or storage
device vendor.
1. Check whether the installed lpfc driver and firmware
match the E9000.
2. Check for error codes on FC links between the HBA
and the storage device.
3. Run the iostat command on the host to query the I/O
delay and concurrent I/O operations.
4. Collect the OS message log and check the lpfc driver
information and the I/O queue depth configured for
the HAB driver.
5. Perform drive performance tests (read and write 100
GB and 100 MB files).
6. Contact storage analysis engineers.
describes the common quick recovery methods and handling
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5 Diagnosing and Rectifying Faults
104