having trouble with RAID and FC5

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Okay I am trying to setup RAID on FC5, almost all the examples that I
have found are for raidtools2, however FC5 does not have raidtools2.
so i have been trying to use mdadm to do it, but I keep getting
errors.

So anyway I need some help in setting up RAID to work on my system.
Here is some preliminary information.

##################################################

fdisk -l

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        6540    52428127+  83  Linux
/dev/sda3            6541       13067    52428127+  83  Linux
/dev/sda4           13068       19457    51327675    5  Extended
/dev/sda5           13068       13328     2096451   82  Linux swap / Solaris
/dev/sda6           13329       19457    49231161   83  Linux

Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1          13      104391   83  Linux
/dev/sdb2              14        6540    52428127+  83  Linux
/dev/sdb3            6541       13067    52428127+  83  Linux
/dev/sdb4           13068       19457    51327675    5  Extended
/dev/sdb5           13068       13328     2096451   82  Linux swap / Solaris
/dev/sdb6           13329       19457    49231161   83  Linux

##################################################

df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/dm-6              46G  1.6G   42G   4% /
/dev/dm-1              99M  9.2M   85M  10% /boot
tmpfs                 473M     0  473M   0% /dev/shm
/dev/dm-3              49G  181M   46G   1% /home
/dev/dm-2              49G  233M   46G   1% /var

any other questions please ask away.

I had been told to use fdisk to change the ID of the drive and to make
it a "Linux raid auto detect" and then do that on the other disk.
That seemed to be okay, but then that was some instructions for
raidtools2.  mdadm I couldn't even get past the first one as it
couldn't find sda5 or sdb5, it told me to use the swap partition is
there is an increased chance of data loss with RAID 0, to use a
partition that does hold any important data.  so as you can see I am
right now floating along and I need some help.  If you have a better
way I am all ears.


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