Unable to Unmount the Filesystem /boot In a Running Exadata DB Node

(Doc ID 2273994.1)

Last updated on JUNE 11, 2017

Applies to:

Linux OS - Version Oracle Linux 6.7 and later
x86 64 bit

Symptoms

Unable to unmount the filesystem /boot in a running DB node with the error "umount: /boot: device is busy".

The Exadata patchmgr is failing in the node as it fails to unmount /boot and fails to run fsck on it.

Just after the reboot it works fine, but after 20-30 minutes it starts to fail again.

 

Changes


Cause

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