Screwiness with PCI-E SATA card?

[Jonathan Gardner]

I've got a system with two SATA connectors that I've hooked up two
SATA drives to. I upgraded by adding a PCI-E SATA card and another,
500GB SATA drive.

I've got Fedora 10 running with the root partition on an LVM volume
group on the big 500GB drive and my /home partition on an LVM VG on a
RAID1 array of the two original drives. Things go fine for about an
hour until the root partition begins to corrupt.

When I reboot, fsck reports that the root partition has a lot of
errors. Running fsck manually confirms that there are a lot of errors.

smartctl doesn't report anything obvious, but I don't have a lot of
experience with smartctl.

Does anyone have any suggestions on how to investigate this? I'm
rather amateurish with the admin tools to diagnose problems with
hardware.

Right now I've got my distribute setup on the two original drives
because I can't trust the new, large drive running on the SATA card.

-- 
Jonathan Gardner
jgardner at jonathangardner.net