SATA/Raid5 = EXT3-fs error

[Darren]

Hello,

I have a new FC3 box running with an Adaptec SATA RAID 2410SA. I am 
using 3 WD Raptors in raid 5, with 1 spare. I initially had a problem 
with Fedora loading the raid card driver which was resolved by disabling 
Hyper-Threading in the Bios.

Anyways, the box had been running great for a week until now. Here's a 
little snippet of the messages it had:

EXT3-fs error (device sda7) in start_transaction: Journal has aborted
scsi0 (0:0): rejecting I/O to offline device
Buffer I/O error on device sda2, logical block 360450
lost page write due to I/O error on sda2
EXT3-fs error (device sda7) in start_transaction: Journal has aborted
EXT3-fs error (device sda6) in ext3_setattr: Journal has aborted
scsi0 (0:0): rejecting I/O to offline device
Buffer I/O error on device sda5, logical block 1
Buffer I/O error on device sda5, logical block 2

etc. etc.

This seemed to happen around 4:01am (when cron.daily runs). The 
partitions were in read only mode and I couldn't even execute a 
"shutdown -r" without generating an Input/Output error.

Now, I'm a little confused on how to proceed. After a hard reboot the 
box is working perfectly again.

Does this seem like bad drives? bad raid card?

Would Read/Write caching on the RAID card cause any problems? Currently 
it's enabled.

Is there any sort of stress test I can run to attempt to duplicate this 
problem?

I appreciate any suggestions.

Thanks,

- Darren