Symptoms
Symptom 1:
After an optical fiber is switched to another port, executing cfgmgr causes system suspension.
Symptom 2:
After an optical fiber is switched to another port, executing cfgmgr fails to create a new path.
Fault Diagnosis
The same problem occurs when the disk arrays from other vendors are used for tests. Therefore, it is believed that the problems are caused by the AIX operating system instead of the self-developed UltraPath or disk array.
Solution
For symptom 1:
Run the kill command to end the cfgmgr process.
If the process cannot be ended, run shutdown -Fr to restart the AIX host.
For symptom 2:
After deleting the path mapped from the original port, run the cfgmgr command to scan disks. Note that if all the paths switch ports, delete also all virtual disks before running cfgmgr to scan disks. Specific steps are as follows:
1.Run lspath -F"name:parent:connection:status to list paths in Failed state, as shown in the following figure.
2.Run the command to delete all the paths in Failed state.
3.Run cfgmgr to scan new paths.
[ Note ]
After switching an optical fiber from one port to another, you must delete the path mapped from the original port before running the cfgmgr command to scan for the path. If all optical fibers switch ports, you must delete virtual disks before running the cfgmgr command to scan for disks.
