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Reboot Hangs At "Restarting system." On EL4 With Kernel 2.6.9- (Doc ID 986475.1)

Last updated on AUGUST 04, 2018

Applies to:

Linux OS - Version: 2.6.9-89.EL and later   [Release: RHEL4U8 and later ]
Linux x86-64


When you attempt to shutdown system, system hangs with the following messages.

Unmouting file systems:
umount2: Device or resource busy
umount: /osmf/mgmt: device is busy
umount2: Device or resource busy
umount: /osmf/mgmt: device is busy
Please standby while rebooting the system...
md: Stopping all md devices.
md: md0 switched to read-only mode.
cciss: stopping all cciss devices.
cciss: removing controller 0
Restarting system.

This problem only occurs on bare-metal HP ProLiant BL460 64 bit machine.
Bare-metal 32 bit and virtualized both 32 & 64 bit do not have this problem.


You recently upgraded the kernel from 2.6.9- to 2.6.9-


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