I have a server running RHEL 5.5 with EMC PowerPath installed. Due to the security requirement, I had to upgrade the kernel to a newer version. Unfortunately, I was not aware of the impact of the upgrade on EMC PowerPath. After the upgrade, the server cannot access to the EMC volumes, and refuses to boot with the local file system with read and write permissions. I have reverted back to the older kernel, but the problem persists.
So, I am stuck. I am not able to change /etc/fstab to remove the partitions on EMC storage, and I am not able to stop the loading of PowerPath kernel modules.
What are my options without resorting to re-install the OS?