Updating the kernel
Current recommendations are to use metadata version 1.2 except when creating a boot partition, in which case use version 1.0 metadata and RAID-1. Booting from a 1.2 raid is only supported when booting with an initramfs, as the kernel can no longer assemble or recognise an array - it relies on userspace tools.Booting directly from 1.0 is supported because the metadata is at the end of the array, and the start of a mirrored 1.0 array just looks like a normal partition to the kernel.If your system has RAID support, you should have a file called /proc/mdstat. If you do not have that file, maybe your kernel does not have RAID support.If you're sure your kernel has RAID support you may need to run run modprobe raid[RAID mode] to load raid support into your kernel.eg to support raid5: It should tell you that you have the right RAID personality (eg.RAID mode) registered, and that no RAID devices are currently active. Arrays can be built on top of entire disks or on partitions.
During the trial, you will receive all of the protections of Oracle Ksplice for your kernel.This leads to 2 frequent questions: In the absence of any other preferences, do that in the /usr/local/src directory.As a linux-specific program there is none of this autoconf stuff - just follow the instructions as per the INSTALL file.Typically you do this in the init scripts after rebooting.Monitor one or more md devices and act on any state changes.