Full Discussion: Linux kernel update
Operating Systems Linux Red Hat Linux kernel update Post 302670129 by admin_xor on Wednesday 11th of July 2012 04:19:34 PM
Old 07-11-2012
My question to you: is there any significant performance issue? Are you planning to update your applications that may require updated kernel?

If your answers are "No", then I would say let the things be as they are now. 2 years of uptime is nothing, Linux on rock solid platforms like Power, can give uptime of a decade if there is no patching/upgrading of software or hardware.
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UPDATE-INITRAMFS(8)					      update-initramfs manual					       UPDATE-INITRAMFS(8)

update-initramfs - generate an initramfs image SYNOPSIS
update-initramfs -c|-d|-u [-k version] [-t] [-v] [-b] [-h] DESCRIPTION
The update-initramfs script manages your initramfs images on your local box. It keeps track of the existing initramfs archives in /boot. There are three modes of operation create, update or delete. You must at least specify one of those modes. The initramfs is a gzipped cpio archive. At boot time, the kernel unpacks that archive into RAM disk, mounts and uses it as initial root file system. All finding of the root device happens in this early userspace. OPTIONS
-k version Set the specific kernel version for whom the initramfs will be generated. For example the output of uname -r for your currently running kernel. This argument is optional for update. The default is the latest kernel version. The use of "all" for the version string specifies update-initramfs to execute the chosen action for all kernel versions, that are already known to update-initramfs. -c This mode creates a new initramfs. -u This mode updates an existing initramfs. -d This mode removes an existing initramfs. -t Allows one to take over an custom initramfs with a newer one. -v This option increases the amount of information you are given during the chosen action. -b Set an different bootdir for the image creation. -h Print a short help page describing the available options in update-initramfs. EXAMPLES
Update the initramfs of the newest kernel: update-initramfs -u Create the initramfs for a specific kernel: update-initramfs -c -k 2.6.18-1-686 FILES
/etc/initramfs-tools/update-initramfs.conf AUTHOR
The initramfs-tools are written by Maximilian Attems <maks@debian.org>, Jeff Bailey <jbailey@raspberryginger.com> and numerous others. SEE ALSO
initramfs.conf(5), initramfs-tools(8), mkinitramfs(8). Linux 2008/12/19 UPDATE-INITRAMFS(8)

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