>GW>I was under the impression that 6.0 supports RAID as well .......
>GW>
>
>Maybe it does... I didn't try it then but... I never saw an install time
option
>for it with 6.0 and there is with 6.1.
To clarify briefly. Linux kernels as-of version 2.1.something support
software RAID, if you say yes to the apropriate software RAID related
options when you compile the kernel (afaik this is configured in Redhat
stock kernels already) and install the raidtools package, so _Linux_ 2.2
supports software RAID. Redhat 6.0 and 6.1 can both use kernel 2.2.12 and
the latest raidtools package, thus both support software RAID. The
destinction is that the Anaconda installation system in 6.1 has the option
to configure RAID at install time, whereas the 6.0 installer doesn't. The
proceedure for creating a RAID array after installation is the same, create
your apropriate partitions with the system id "fd" for raid autodetect.
Create your /etc/raidtab file to define your md device(s), use mkraid to
create the md device(s), use mke2fs to make a filesystem on it/them, then
use it/them as a filesystem. Ta Da!
I've had great results with root as a normal filesystem, /var as a RAID-0
array and /home as a RAID-1 array. If you feel that you must have a RAID
device mounted as root, read the root-raid howto (recalling that it's
somewhat dated). The jist of it is that you must create a small normal
partition to mount as /boot because you cannot boot a kernel from a RAID
array. Afaik with raid autodetect in kernel 2.2.12 (and possibly earlier)
it should be as simple as:
1. Compile all the RAID related stuff directly into your kernel (no modules)
2. Create your /boot filesystem and put the apropriate data into it (your
kernel).
3. Create the RAID device you want to use as root and mount it to some
mountpoint
4. Boot in single-user mode and copy the contents of your root partition
into the RAID device.
5. Alter your lilo.conf to indicate the new root device (don't change it's
install location, just the root parameter it feeds to the kernel)
6. Run lilo and reboot.
RTFM section:
See the Software-RAID mini-howto and the Root-RAID-HOWTO for more detailed
but probably less up-to-date information. Also see raidtab(5) and related
man pages if you have raidtools installed.
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