Kevin Gassiot wrote:

We have had problems with any filesystem larger than 1 TB. Although I have been assured that there are no problems with large filesystems, we can create a 1 TB filesystem, and things work fine... create it a megabyte over, and it seems to go fine, but when you start writing to the filesystem, it starts getting I/O errors. I seem to remember getting the answer that fdisk and parted cannot create LUNs larger than 1 TB, so the filesystems built on top of these LUNs have problems. I think I was told that I would have to create LUNs on the arrays smaller than 1 TB, and use LVM to create a logical volume to get the larger size....

This is consistent with the symptoms I saw on my SuSE systems. It happened in both the 32 and 64 bit versions of SLES 8. Andi Kleen wrote:

The 64bit OS can address more and the file systems can too. Your problems are most likely caused by the Adaptec device driver or the RAID firmware.

It is not a big problem for us to partition the big array into chunks of 1 TB or less with the RAID controller, and present the partitions to the host as different LUNs. That's what we'll do for this project. thanks for all the replies, eyc