Date: Thu, 02 Mar 2000 01:57:33 -0600 From: Kim Shrier <kim@tinker.com> To: freebsd-questions@freebsd.org Subject: disk errors Message-ID: <38BE1EED.7D877256@tinker.com>
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I am having some trouble with one of my SCSI disks and I am trying to
figure out if the problem is the drive or the controller card. The
system in question has crashed 4 times in the past year and it never
logged anything suspicious until today. Right before the crash, these
messages showed up in the log:
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): data overrun detected in
Data-Out phase. Tag == 0x4e.
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): Have seen Data Phase.
Length = 8192. NumSGs = 2.
Mar 1 15:50:06 hrothgar /kernel: sg[0] - Addr 0x4926000 : Length 4096
Mar 1 15:50:06 hrothgar /kernel: == 0x4e.
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): Have seen Data Phase.
Length = 8192. NumSGs = 2.
Mar 1 15:50:06 hrothgar /kernel: sg[0] - Addr 0x4926000 : Length 4096
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): data overrun detected in
Data-Out phase. Tag == 0x4e.
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): Have seen Data Phase.
Length = 8192. NumSGs = 2.
Mar 1 15:50:06 hrothgar /kernel: sg[0] - Addr 0x4926000 : Length 4096
The machine has an Adaptec 3940uw SCSI controller card and 3 Seagate
ST34573W barracuda drives, 2 on the first channel and 1 on the second.
The drive giving me the problem is the first drive on the first
channel. What I am trying to figure out is if the problem is in the
drive or the controller card. Following are the boot messages for the
hardware in question:
Mar 1 18:48:53 hrothgar /kernel: ahc0: <Adaptec 3940A Ultra SCSI adapter> rev
0x03 int a irq 11 on pci0.15.0
Mar 1 18:48:53 hrothgar /kernel: ahc0: aic7895 Wide Channel A, SCSI Id=7, 255
SCBs
Mar 1 18:48:53 hrothgar /kernel: ahc1: <Adaptec 3940A Ultra SCSI adapter> rev
0x03 int b irq 12 on pci0.15.1
Mar 1 18:48:53 hrothgar /kernel: ahc1: aic7895 Wide Channel B, SCSI Id=7, 255
SCBs
...
Mar 1 18:48:53 hrothgar /kernel: Waiting 5 seconds for SCSI devices to settle
Mar 1 18:48:53 hrothgar /kernel: changing root device to da0s1a
Mar 1 18:48:53 hrothgar /kernel: da2 at ahc1 bus 0 target 2 lun 0
Mar 1 18:48:53 hrothgar /kernel: da2: <SEAGATE ST34573W 6244> Fixed Direct
Access SCSI-2 device
Mar 1 18:48:53 hrothgar /kernel: da2: 20.000MB/s transfers (10.000MHz, offset
8, 16bit), Tagged Queueing Enabled
Mar 1 18:48:53 hrothgar /kernel: da2: 4340MB (8888924 512 byte sectors: 255H
63S/T 553C)
Mar 1 18:48:53 hrothgar /kernel: da0 at ahc0 bus 0 target 0 lun 0
Mar 1 18:48:53 hrothgar /kernel: da0: <SEAGATE ST34573W 6244> Fixed Direct
Access SCSI-2 device
Mar 1 18:48:53 hrothgar /kernel: da0: 20.000MB/s transfers (10.000MHz, offset
8, 16bit), Tagged Queueing Enabled
Mar 1 18:48:53 hrothgar /kernel: da0: 4340MB (8888924 512 byte sectors: 255H
63S/T 553C)
Mar 1 18:48:53 hrothgar /kernel: da1 at ahc0 bus 0 target 1 lun 0
Mar 1 18:48:53 hrothgar /kernel: da1: <SEAGATE ST34573W 6244> Fixed Direct
Access SCSI-2 device
Mar 1 18:48:53 hrothgar /kernel: da1: 20.000MB/s transfers (10.000MHz, offset
8, 16bit), Tagged Queueing Enabled
Mar 1 18:48:53 hrothgar /kernel: da1: 4340MB (8888924 512 byte sectors: 255H
6Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): data overrun
detected in Data-Out phase. Tag == 0x4e.
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): Have seen Data
Phase. Length = 8192. NumSGs = 2.
Mar 1 15:50:06 hrothgar /kernel: sg[0] - Addr 0x4926000 : Length 4096
Mar 1 15:50:06 hrothgar /kernel: == 0x4e.
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): Have seen Data
Phase. Length = 8192. NumSGs = 2.
Mar 1 15:50:06 hrothgar /kernel: sg[0] - Addr 0x4926000 : Length 4096
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): data overrun
detected in Data-Out phase. Tag == 0x4e.
Mar 1 15:50:06 hrothgar /kernel: (da0:ahc0:0:0:0): Have seen Data
Phase. Length = 8192. NumSGs = 2.
Mar 1 15:50:06 hrothgar /kernel: sg[0] - Addr 0x4926000 : Length 40963S/T 553C)
Please send replies directly to me since I am not on this list.
Kim Shrier
--
Kim Shrier - principal, Shrier and Deihl - mailto:kim@tinker.com
Remote Unix Network Admin, Security, Internet Software Development
Tinker Internet Services - Superior FreeBSD-based Web Hosting
http://www.tinker.com/
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