How to Fix: Linux Red Hat 7 Multipath error asking for maintenance mode on boot

Linux Red Hat 7 Multipath error asking for maintenance mode on boot can be frustrating and affect server performance. This issue typically occurs when there is a misconfiguration in the multipath setup, causing the system to fail to mount the device properly during boot.

The problem can be further complicated by the fact that pressing Ctrl+D allows the server to start without issues, but this temporary workaround does not address the underlying cause of the problem.

⚠️ Common Causes

• The primary reason for this error is the incorrect configuration of the multipath device. When the Dell technician created a GPT table on /dev/sdb instead of /dev/mapper/DB_DATA01, it caused the system to lose track of the correct mapping between the physical disk and the logical device.
• Another possible cause is the fact that the xfs partition inside /dev/mapper/DB_DATA01 was not properly initialized or mounted during boot. This can lead to a situation where the system cannot find the correct mount point for the device.

🔧 Proven Troubleshooting Steps

✨ Wrapping Up

To resolve this issue, follow either Method 1 or Method 2, depending on the root cause identified. Once the multipath device and xfs partition are properly configured, reboot the server to test if the error persists. If the problem is resolved, you can safely remove the temporary fix (Ctrl+D) and enjoy a fully functional Linux Red Hat 7 system.