twa crashes

[Barrett Lyon]

I'm getting constant twa failures on HEAD, I have several of the same  
servers with the most up-to-date firmware and on heavy disk IO they  
just crash with looping reset messages.  This is not on a single  
machine, it happens on all of my 7.0 TWA machines, but not in 6.2:

twa0: ERROR: (0x05: 0x210B): Request timed out!: request =  
0xffffffff80e46de0
twa0: INFO: (0x16: 0x1108): Resetting controller...:
twa0: INFO: (0x04: 0x0001): Controller reset occurred: resets=5
twa0: INFO: (0x16: 0x1107): Controller reset done!:
twa0: ERROR: (0x05: 0x210B): Request timed out!: request =  
0xffffffff80e45680
twa0: INFO: (0x16: 0x1108): Resetting controller...:
twa0: INFO: (0x04: 0x0001): Controller reset occurred: resets=6
twa0: INFO: (0x16: 0x1107): Controller reset done!: