How To Set Up Software RAID 1 On A Running LVM System (Incl. GRUB Configuration)
I'm following your instructions and attempting to modify them to my environment.
My concern is that I didn't use the default partitioning during my install, I've got a partition (PV) for each of the major functions running on this machine (i.e. vg_opsys; vg_oracle; vg_websoft; etc.) for a total of 8 partitions on this 1 TB SATA drive.
I'm curious as to what should be done with partition 4 which is my type 5 (extended) partition type. Should I just ignore it when I'm changing the types on /dev/sdb to fd?
Also, there is at least 250 GB of free space on /dev/sda. How does that get converted to RAID 1? Or does it? And if it doesn't, should I just start all over and use hardware raid?