I am facing an incompatibility issue between Ubuntu 8.04 LTS (Hardy) and the PERC 6/i RAID controller on our Dell PowerEdge R710 servers. Various forum posts (Ubuntu forum) confirm that other users also have had problems with the 2.6.24 64 bit kernel. One user reports that the problems disappeared after upgrading to kernel 22.214.171.124 (manually compiled). Ubuntu website also states that the R710 is certified for 9.04 and 10.04 LTS which are running on kernels 2.6.28 and 2.6.32.
My question: Can I upgrade the kernel only, without upgrading the entire Ubuntu release, and is this recommended? Or, is the alternative, to upgrade to Ubuntu 10.04 LTS a better solution?
Please be aware that the update must be applied to both test and production servers, where the downtime and risk of failure of the production servers must be kept to a minimum. Also, if possible I would like to avoid compiling my own kernels since this is not recommended by the Ubuntu team.
My current kernel is:
uname -a Linux es 2.6.24-24-server #1 SMP Tue Jul 7 19:39:36 UTC 2009 x86_64 GNU/Linux
Edit: apt-get only shows 2.6.24 releases of the kernel, so I can't just use apt-get to update, can I?