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Mike Tancsa

2011-Aug-02 20:54 UTC

ATA_IDENTIFY requeued due to channel reset LBA=0

I upgraded a RELENG_8 box from a kernel from ~ June 15th to one today to
get some of the zfs and bind updates and on reboot, the box panic'd
twice, and booted fine the third time.  I have not seen this error
before and not sure if its a hardware issue, or some odd timing issue I
ran into ? smartctl shows no errors on any of the disks recorded in
their logs
>From the serial console, this is what I saw
atapci0: <Intel ICH9 SATA300 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x3410-0x341f,0x3400-0x340f irq 21
at device 31.2 on pci0
ata0: <ATA channel 0> on atapci0
ata0: [ITHREAD]
ata1: <ATA channel 1> on atapci0
ata1: [ITHREAD]
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
atapci1: <Intel ICH9 SATA300 controller> port
0x3428-0x342f,0x3444-0x3447,0x3420-0x3427,0x3440-0x3443,0x30f0-0x30ff,0x30e0-0x30ef
irq 21 at device 31.5 on pci0
atapci1: [ITHREAD]
ata2: <ATA channel 0> on atapci1
ata2: [ITHREAD]
ata3: <ATA channel 1> on atapci1
ata3: [ITHREAD]
acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on
acpi0
.
.
.
ugen1.1: <Intel> at usbus1
uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen2.1: <Intel> at usbus2
uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
ugen3.1: <Intel> at usbus3
uhub3: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3
ugen4.1: <Intel> at usbus4
uhub4: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4
ugen5.1: <Intel> at usbus5
uhub5: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5
ugen6.1: <Intel> at usbus6
uhub6: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus6
ugen7.1: <Intel> at usbus7
uhub7: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus7
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
uhub2: 2 ports with 2 removable, self powered
uhub4: 2 ports with 2 removable, self powered
uhub5: 2 ports with 2 removable, self powered
uhub6: 2 ports with 2 removable, self powered
ad0: 1430799MB <Seagate ST31500341AS CC1H> at ata0-master UDMA100 SATA
3Gb/s
uhub3: 6 ports with 6 removable, self powered
uhub7: 6 ports with 6 removable, self powered
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
unknown: WARNING - ATA_IDENTIFY taskqueue timeout - completing request
directly
unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
ad4: 1430799MB <Seagate ST31500341AS CC1H> at ata2-master UDMA100 SATA
3Gb/s
subdisk4: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x308
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80419eae
stack pointer           = 0x28:0xffffff800009dab0
frame pointer           = 0x28:0xffffff800009dad0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 0 (thread taskq)
trap number             = 12
ad6: 1430799MB <Seagate ST31500341AS CC1H> at ata3-master UDMA100 SATA
3Gb/s
panic: page fault
cpuid = 0
Uptime: 14s
Cannot dump. Device not defined or unavailable.



The normal boot looks like

uhub4: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4
ugen5.1: <Intel> at usbus5
uhub5: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5
ugen6.1: <Intel> at usbus6
uhub6: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus6
ugen7.1: <Intel> at usbus7
uhub7: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus7
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
uhub2: 2 ports with 2 removable, self powered
uhub4: 2 ports with 2 removable, self powered
uhub5: 2 ports with 2 removable, self powered
uhub6: 2 ports with 2 removable, self powered
ad0: 1430799MB <Seagate ST31500341AS CC1H> at ata0-master UDMA100 SATA
3Gb/s
ad2: 76319MB <Seagate ST380811AS 3.AAE> at ata1-master UDMA100 SATA
1.5Gb/s
ad3: 1907729MB <WDC WD2001FASS-00U0B0 01.00101> at ata1-slave UDMA100
SATA 3Gb/s
GEOM: ad2s1: geometry does not match label (255h,63s != 16h,63s).
ad4: 1430799MB <Seagate ST31500341AS CC1H> at ata2-master UDMA100 SATA
3Gb/s
ad6: 1430799MB <Seagate ST31500341AS CC1H> at ata3-master UDMA100 SATA
3Gb/s
uhub3: 6 ports with 6 removable, self powered
uhub7: 6 ports with 6 removable, self powered
pmp0 at siisch0 bus 0 scbus0 target 15 lun 0
pmp0: <Port Multiplier 47261095 1f06> ATA-0 device
pmp0: 300.000MB/s transfers (SATA 2.x, NONE, PIO 8192bytes)
pmp0: 5 fan-out ports
pmp1 at siisch1 bus 0 scbus1 target 15 lun 0
pmp1: <Port Multiplier 47261095 1f06> ATA-0 device
pmp1: 300.000MB/s transfers (SATA 2.x, NONE, PIO 8192bytes)
pmp1: 5 fan-out ports
ada0 at siisch0 bus 0 scbus0 target 0 lun 0
ada0: <WDC WD1001FALS-00J7B1 05.00K05> ATA-8 SATA 2.x device
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada1 at siisch0 bus 0 scbus0 target 1 lun 0
ada1: <WDC WD1001FALS-00J7B1 05.00K05> ATA-8 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada2 at siisch0 bus 0 scbus0 target 2 lun 0
ada2: <WDC WD1001FALS-00J7B1 05.00K05> ATA-8 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada2: Command Queueing enabled
ada2: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada3 at siisch0 bus 0 scbus0 target 3 lun 0
ada3: <WDC WD1001FALS-00J7B1 05.00K05> ATA-8 SATA 2.x device
ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada3: Command Queueing enabled
ada3: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
ada4 at siisch1 bus 0 scbus1 target 0 lun 0
ada4: <WDC WD2001FASS-00U0B0 01.00101> ATA-8 SATA 2.x device
ada4: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada4: Command Queueing enabled
ada4: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada5 at siisch1 bus 0 scbus1 target 1 lun 0
ada5: <WDC WD1501FASS-00W2B0 05.01D05> ATA-8 SATA 2.x device
ada5: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada5: Command Queueing enabled
ada5: 1430799MB (2930277168 512 byte sectors: 16H 63S/T 16383C)
ada6 at siisch1 bus 0 scbus1 target 2 lun 0
ada6: <WDC WD1501FASS-00W2B0 05.01D05> ATA-8 SATA 2.x device
ada6: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada6: Command Queueing enabled
ada6: 1430799MB (2930277168 512 byte sectors: 16H 63S/T 16383C)
ada7 at siisch1 bus 0 scbus1 target 3 lun 0
ada7: <WDC WD1501FASS-00W2B0 05.01D05> ATA-8 SATA 2.x device
ada7: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada7: Command Queueing enabled
ada7: 1430799MB (2930277168 512 byte sectors: 16H 63S/T 16383C)
ada8 at siisch1 bus 0 scbus1 target 4 lun 0
ada8: <WDC WD1501FASS-00W2B0 05.01D05> ATA-8 SATA 2.x device
ada8: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada8: Command Queueing enabled
ada8: 1430799MB (2930277168 512 byte sectors: 16H 63S/T 16383C)
lapic1: Forcing LINT1 to edge trigger
SMP: AP CPU #1 Launched!



e.g.

 smartctl -a /dev/ad3
smartctl 5.39.1 2010-01-28 r3054 [FreeBSD 8.2-STABLE amd64] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ==Device Model:     WDC WD2001FASS-00U0B0
Serial Number:    WD-WMAUR0328005
Firmware Version: 01.00101
User Capacity:    2,000,398,934,016 bytes
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Tue Aug  2 16:52:52 2011 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ==SMART overall-health self-assessment test
result: PASSED

General SMART Values:
Offline data collection status:  (0x82) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection:
Enabled.
Self-test execution status:      (   0) The previous self-test routine
completed
                                        without error or no self-test
has ever
                                        been run.
Total time to complete Offline
data collection:                 (30900) seconds.
Offline data collection
capabilities:                    (0x7b) SMART execute Offline immediate.
                                        Auto Offline data collection
on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        Conveyance Self-test supported.
                                        Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                        power-saving mode.
                                        Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine
recommended polling time:        (   2) minutes.
Extended self-test routine
recommended polling time:        ( 255) minutes.
Conveyance self-test routine
recommended polling time:        (   5) minutes.
SCT capabilities:              (0x3037) SCT Status supported.
                                        SCT Feature Control supported.
                                        SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE
UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always
      -       0
  3 Spin_Up_Time            0x0027   047   047   021    Pre-fail  Always
      -       14650
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always
      -       21
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always
      -       0
  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always
      -       0
  9 Power_On_Hours          0x0032   089   089   000    Old_age   Always
      -       8630
 10 Spin_Retry_Count        0x0032   100   253   000    Old_age   Always
      -       0
 11 Calibration_Retry_Count 0x0032   100   253   000    Old_age   Always
      -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always
      -       19
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always
      -       18
193 Load_Cycle_Count        0x0032   134   134   000    Old_age   Always
      -       200377
194 Temperature_Celsius     0x0022   121   113   000    Old_age   Always
      -       31
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always
      -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always
      -       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age
Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always
      -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age
Offline      -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining
LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      4992
     -

SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

smartctl -a /dev/ad2
smartctl 5.39.1 2010-01-28 r3054 [FreeBSD 8.2-STABLE amd64] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ==Model Family:     Seagate Barracuda 7200.9
family
Device Model:     ST380811AS
Serial Number:    6PS01Q17
Firmware Version: 3.AAE
User Capacity:    80,026,361,856 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   7
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Tue Aug  2 16:52:59 2011 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ==SMART overall-health self-assessment test
result: PASSED
See vendor-specific Attribute list for marginal Attributes.

General SMART Values:
Offline data collection status:  (0x82) Offline data collection activity
                                        was completed without error.
                                        Auto Offline Data Collection:
Enabled.
Self-test execution status:      (   0) The previous self-test routine
completed
                                        without error or no self-test
has ever
                                        been run.
Total time to complete Offline
data collection:                 ( 430) seconds.
Offline data collection
capabilities:                    (0x5b) SMART execute Offline immediate.
                                        Auto Offline data collection
on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        No Conveyance Self-test supported.
                                        Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                        power-saving mode.
                                        Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                        General Purpose Logging supported.
Short self-test routine
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        (  27) minutes.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE
UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   119   095   006    Pre-fail  Always
      -       0
  3 Spin_Up_Time            0x0003   095   095   000    Pre-fail  Always
      -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always
      -       63
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always
      -       0
  7 Seek_Error_Rate         0x000f   084   060   030    Pre-fail  Always
      -       248537285
  9 Power_On_Hours          0x0032   095   095   000    Old_age   Always
      -       5104
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always
      -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always
      -       89
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always
      -       0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always
      -       0
190 Airflow_Temperature_Cel 0x0022   069   045   045    Old_age   Always
  In_the_past 31 (Lifetime Min/Max 27/32)
194 Temperature_Celsius     0x0022   031   055   000    Old_age   Always
      -       31 (0 20 0 0)
195 Hardware_ECC_Recovered  0x001a   057   048   000    Old_age   Always
      -       24265782
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always
      -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age
Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always
      -       0
200 Multi_Zone_Error_Rate   0x0000   100   253   000    Old_age
Offline      -       0
202 Data_Address_Mark_Errs  0x0032   100   253   000    Old_age   Always
      -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1

SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.




-- 
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada   http://www.tancsa.com/

Jeremy Chadwick

2011-Aug-02 23:12 UTC

head link

ATA_IDENTIFY requeued due to channel reset LBA=0

On Tue, Aug 02, 2011 at 04:54:38PM -0400, Mike Tancsa
wrote:> I upgraded a RELENG_8 box from a kernel from ~ June 15th to one today to
> get some of the zfs and bind updates and on reboot, the box panic'd
> twice, and booted fine the third time.  I have not seen this error
> before and not sure if its a hardware issue, or some odd timing issue I
> ran into ? smartctl shows no errors on any of the disks recorded in
> their logs
> 
> >From the serial console, this is what I saw
> 
> atapci0: <Intel ICH9 SATA300 controller> port
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x3410-0x341f,0x3400-0x340f irq 21
> at device 31.2 on pci0
> ata0: <ATA channel 0> on atapci0
> ata0: [ITHREAD]
> ata1: <ATA channel 1> on atapci0
> ata1: [ITHREAD]
> pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
> atapci1: <Intel ICH9 SATA300 controller> port
>
0x3428-0x342f,0x3444-0x3447,0x3420-0x3427,0x3440-0x3443,0x30f0-0x30ff,0x30e0-0x30ef
> irq 21 at device 31.5 on pci0
> atapci1: [ITHREAD]
> ata2: <ATA channel 0> on atapci1
> ata2: [ITHREAD]
> ata3: <ATA channel 1> on atapci1
> ata3: [ITHREAD]
> acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff
on
> acpi0
> .
> .
> .
> ugen1.1: <Intel> at usbus1
> uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on
usbus1
> ugen2.1: <Intel> at usbus2
> uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on
usbus2
> ugen3.1: <Intel> at usbus3
> uhub3: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on
usbus3
> ugen4.1: <Intel> at usbus4
> uhub4: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on
usbus4
> ugen5.1: <Intel> at usbus5
> uhub5: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on
usbus5
> ugen6.1: <Intel> at usbus6
> uhub6: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on
usbus6
> ugen7.1: <Intel> at usbus7
> uhub7: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on
usbus7
> uhub0: 2 ports with 2 removable, self powered
> uhub1: 2 ports with 2 removable, self powered
> uhub2: 2 ports with 2 removable, self powered
> uhub4: 2 ports with 2 removable, self powered
> uhub5: 2 ports with 2 removable, self powered
> uhub6: 2 ports with 2 removable, self powered
> ad0: 1430799MB <Seagate ST31500341AS CC1H> at ata0-master UDMA100
SATA 3Gb/s
> uhub3: 6 ports with 6 removable, self powered
> uhub7: 6 ports with 6 removable, self powered
> unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
> ...
> unknown: WARNING - ATA_IDENTIFY taskqueue timeout - completing request
directly
> unknown: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
> ad4: 1430799MB <Seagate ST31500341AS CC1H> at ata2-master UDMA100
SATA 3Gb/s
> subdisk4: WARNING - ATA_IDENTIFY requeued due to channel reset LBA=0
This looks like a failure on ata1, both -master and -slave.  I can tell
based on later output:
> ad0: 1430799MB <Seagate ST31500341AS CC1H> at ata0-master UDMA100
SATA 3Gb/s
> ad2: 76319MB <Seagate ST380811AS 3.AAE> at ata1-master UDMA100 SATA
1.5Gb/s
> ad3: 1907729MB <WDC WD2001FASS-00U0B0 01.00101> at ata1-slave UDMA100
SATA 3Gb/s
> GEOM: ad2s1: geometry does not match label (255h,63s != 16h,63s).
> ad4: 1430799MB <Seagate ST31500341AS CC1H> at ata2-master UDMA100
SATA 3Gb/s
> smartctl -a /dev/ad3
> ...
> smartctl -a /dev/ad2
> ....
These disks look in fine shape.

The only thing I could think might have happened is that either the ata1
channel went wonky, or one of the two disks (ad2 or ad3) has an
intermittent problem within its HPA area (which TMK wouldn't show up in
SMART but would manifest itself as an issue when ATA_IDENTIFY/0xec
would be called since some of the data that CDB returns comes from the
HPA), or there's a strange quirk/bug in the older ata(4) code.

Does your motherboard support AHCI?  I see it's ICH9 and you're running
it in Compatible mode (which makes SATA devices appear as classic PATA).

Alexander (mav@) should act as a more authoritative source for this.
However, I can tell you up front that booting verbose is your best
choice of option here, as it gives significant controller status/state
debug information which is useful when troubleshooting things like this.
So unless the problem is reproducible, I'm not sure if you're willing to
constantly boot verbose or not.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |

freebsd stable - Aug 2011 - ATA_IDENTIFY requeued due to channel reset LBA=0

ATA_IDENTIFY requeued due to channel reset LBA=0

ATA_IDENTIFY requeued due to channel reset LBA=0