The kernel aacraid driver seems to be broken in kernel 2.6.25 and newer. It looks like it is limited to SCSI based cards and a 64bit environment Reproducible: Always Steps to Reproduce: 1. Use a computer with a Adaptec 2120S SCS RAID card 2. Compile the kernel with the aacraid driver and boot it 3. During the boot process the error message should emerge Actual Results: aac_srb: aac_fib_send failed with status: 8195 aac_srb: aac_fib_send failed with status: 8195 aac_srb: aac_fib_send failed with status: 8195 aac_srb: aac_fib_send failed with status: 8195 aac_srb: aac_fib_send failed with status: 8195 ... The aacraid driver works fine with Adaptec's 2810SA SATA RAID card. Here is a link to an another bug report about what looks like the same problem: https://bugzilla.redhat.com/show_bug.cgi?id=450444
Redhat is upstream for this driver and since they already have a bug open I'm going to resolve this as UPSTREAM. I have added myself to the CC list of the upstream bug to monitor the progress.