Troubleshooting Nytro XD
This topic describes the known issues on the MegaRAID Storage Manager (MSM) GUI and their probable solutions.
Nytro XD Configuration Issues
Nytro XD Start-up Issues
Restart your system.
Linux Start-up Issues
Restart your system.
The Nytro XD service stop can fail if the target device is active, or if there is an active mounted file system on the target device. Unmount all of the target devices and stop the Nytro XD service.
If the previous invocation of the Nytro XD service stop has failed, the subsequent invocation of start service can fail or might fail to bring up all of the configured target devices. Unmount all of the target devices and stop the Nytro XD service.
Windows Start-up Issues
Restart your system.
Steady Mode Issues
This section describes the problems encountered after the Nytro XD solution is configured and when it is in a running state.
Cache Device Failure
Logical Drive Failure
Logical Drive Offline Issues
Nytro XD is a host-based solution, and relies on the operating system (OS) component to update the device state change. Different tools might have their own way to make the devices offline or online. Nytro XD does not receive these events unless this is propagated to the OS by the corresponding software. Nytro XD does not move the state of the device if the state is not propagated, because this would result in miss match between the device OS state and Nytro XD state.
Logical Drive Online Issues
See Making the Cached Logical Drives Online.
Nytro XD depends on BIOS UU ID to identify native and foreign configurations. Some flavors of Linux are known to report the same BIOS UU ID in different formats due to which Nytro XD might report foreign configuration on an firmware upgrade (for example, RHEL 5.7 to RHEL 6.0). You must reconfigure the Nytro XD if you notice this error.