Status of ATA tagging in Stable

[Kevin Oberman]

I have a P3 system running STABLE built on March 7. I installed a new
IBM DTLA disk drive and was distressed at its slowness, so I tried
turning on tagging to see if that would help. It seemed to, until...

3 AM when my periodic tasks started running. The system lost all disk
access and logged lots of errors (a few of which I added to the end of
this message).

I rebooted the system this morning and the problem re-appeared when fsck
ran. I then turned off tagged queuing and the system came up normally.

Is there some problem with the DTLA drive or is this a driver problem?

R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634

03:01:18 ptavv /kernel: ad0: no request for tag=0
03:01:18 ptavv /kernel: ad0: invalidating queued requests
03:01:18 ptavv /kernel: ad0: no request for tag=0
03:01:18 ptavv /kernel: ad0: invalidating queued requests
03:01:28 ptavv /kernel: ad0: READ command timeout tag=0 serv=1 - resetting
03:01:28 ptavv /kernel: ad0: invalidating queued requests
03:01:28 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:28 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:28 ptavv /kernel: done
03:01:28 ptavv /kernel: ad0: no request for tag=0
03:01:28 ptavv /kernel: ad0: invalidating queued requests
03:01:28 ptavv /kernel: ad0: no request for tag=1
03:01:28 ptavv /kernel: ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: READ command timeout tag=0 serv=1 - resetting
03:01:39 ptavv /kernel: ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: timeout waiting for READY
03:01:39 ptavv /kernel: ad0: invalidating queued requests
03:01:39 ptavv /kernel: - resetting
03:01:39 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:39 ptavv /kernel: done
03:01:39 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:39 ptavv /kernel: done
03:01:39 ptavv /kernel: ad0: WRITE command timeout tag=3 serv=0 - resetting
03:01:39 ptavv /kernel: ad0: invalidating queued requests
03:01:39 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:39 ptavv /kernel: done
03:01:39 ptavv /kernel: ad0: WRITE command timeout tag=2 serv=0 - resetting
03:01:39 ptavv /kernel: ad0: invalidating queued requests
03:01:39 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:39 ptavv /kernel: done
03:01:39 ptavv /kernel: ad0: READ command timeout tag=1 serv=0 - resetting
03:01:39 ptavv /kernel: ad0: invalidating queued requests
03:01:39 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:39 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:39 ptavv /kernel: done
03:01:39 ptavv /kernel: ad0: no request for tag=1
03:01:39 ptavv /kernel: ad0: invalidating queued requests
03:01:49 ptavv /kernel: ad0: READ command timeout tag=0 serv=0 - resetting
03:01:49 ptavv /kernel: ad0: invalidating queued requests
03:01:49 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:49 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:49 ptavv /kernel: done
03:01:49 ptavv /kernel: ad0: READ command timeout tag=0 serv=1 - resetting
03:01:49 ptavv /kernel: ad0: invalidating queued requests
03:01:49 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:49 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:49 ptavv /kernel: done
03:01:49 ptavv /kernel: ad0: WRITE command timeout tag=3 serv=0 - resetting
03:01:49 ptavv /kernel: ad0: invalidating queued requests
03:01:49 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:49 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:49 ptavv /kernel: done
03:01:49 ptavv /kernel: ad0: WRITE command timeout tag=2 serv=0 - resetting
03:01:49 ptavv /kernel: ad0: invalidating queued requests
03:01:49 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:49 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:49 ptavv /kernel: done
03:01:49 ptavv /kernel: ad0: READ command timeout tag=1 serv=0 - resetting
03:01:49 ptavv /kernel: ad0: invalidating queued requests
03:01:49 ptavv /kernel: ata0: resetting devices .. ad0: invalidating queued requests
03:01:49 ptavv /kernel: ad0: DMA limited to UDMA33, non-ATA66 cable or device
03:01:49 ptavv /kernel: done