After a kernel upgrade the timeout entry is missing from the grub configuration

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Environment

SUSE Linux Enterprise Server 11 Service Pack 4 (SLES 11 SP4)
SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3)

Situation

With /boot using a separate partition / device, after updating the kernel the timeout entry is missing from /boot/grub/menu.lst resulting in the server not automatically booting anymore after a restart / reset.

Resolution

Verify the disk space usage of /boot and either free space by for example removing older / previous installed kernel versions etc. or increasing the size for /boot.

Cause

Due to insufficient space on /boot during the upgrade the grub files are not properly updated resulting in the following error messages logged in /var/log/pbl.log:

2016-11-09 14:31:22 <3> pbl-4185.2 FileIO::WriteFile.141: Error: Failed to close /boot/grub/menu.lst.new: No space left on device

2016-11-09 14:31:22 <3> pbl-4185.2 Tools::AddSection.1499: Error: An error occurred while writing the settings.

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