ad8: TIMEOUT - WRITE_DMA errors UFS 7.0-RC1

Nikolaj Farrell nixx at freebsd.se
Sat Jan 26 14:19:38 PST 2008


After upgrading from RELENG_6_2 to 7.0-RC1 I am experiencing system 
becoming unresponsive during intensive disk operations. Only solution is 
a power off. These hangs occured pretty much within a few hours of first 
running 7.0-RC1. 6.2R was fine. I am not running ZFS.

The hangs are easy to reproduce by an unrar of an archive ~4.4GB. The 
system will not hang during "normal" operations.

Below are the errors I get, output from dmesg, atacontrol cap and 
smartctl tests. (The long test is aborted below, but as indicated 
previously completed without errors)

These are the errors:
---
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES SET TRANSFER 
MODE taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES ENABLE RCACHE 
taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES ENABLE WCACHE 
taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SET_MULTI taskqueue 
timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: TIMEOUT - WRITE_DMA retrying (1 
retry left) LBA=55552415
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES SET TRANSFER 
MODE taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES SET TRANSFER 
MODE taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES ENABLE RCACHE 
taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SETFEATURES ENABLE WCACHE 
taskqueue timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: WARNING - SET_MULTI taskqueue 
timeout - completing request directly
Jan 26 19:55:36 athlon kernel: ad8: TIMEOUT - WRITE_DMA retrying (1 
retry left) LBA=55552543
---
and so on...

This computer has only the one SATA hard drive.
dmesg info:
atapci1: <VIA 8237A SATA150 controller> port 
0xcc00-0xcc07,0xc880-0xc883,0xc800-0xc807,0xc480-0xc483,0xc400-0xc40f,0xc000-0xc0ff 
irq 21 at device 15.0 on pci0
atapci1: [ITHREAD]
ata4: <ATA channel 0> on atapci1
ad8: 238475MB <SAMSUNG SP2504C VT100-50> at ata4-master SATA150

---

atacontrol cap ad8

Protocol              Serial ATA II
device model          SAMSUNG SP2504C
serial number         S09QJ1CP201268
firmware revision     VT100-50
cylinders             16383
heads                 16
sectors/track         63
lba supported         268435455 sectors
lba48 supported       488397168 sectors
dma supported
overlap not supported

Feature                      Support  Enable    Value           Vendor
write cache                    yes      yes
read ahead                     yes      yes
Native Command Queuing (NCQ)   yes       -      31/0x1F
Tagged Command Queuing (TCQ)   no       no      31/0x1F
SMART                          yes      yes
microcode download             yes      yes
security                       yes      no
power management               yes      yes
advanced power management      no       no      0/0x00
automatic acoustic management  yes      no      0/0x00  254/0xFE

---
smartctl -a /dev/ad8:

=== START OF INFORMATION SECTION ===
Model Family:     SAMSUNG SpinPoint P120 series
Device Model:     SAMSUNG SP2504C
Serial Number:    S09QJ1CP201268
Firmware Version: VT100-50
User Capacity:    250 059 350 016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   7
ATA Standard is:  ATA/ATAPI-7 T13 1532D revision 4a
Local Time is:    Sat Jan 26 22:44:43 2008 CET
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:  (0x02) Offline data collection activity
                                         was completed without error.
                                         Auto Offline Data Collection: 
Disabled.
Self-test execution status:      (  25) The self-test routine was aborted by
                                         the host.
Total time to complete Offline
data collection:                 (5028) 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:        (  83) minutes.

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     0x000f   100   100   051    Pre-fail 
Always       -       42
   3 Spin_Up_Time            0x0007   253   253   025    Pre-fail 
Always       -       5824
   4 Start_Stop_Count        0x0032   100   100   000    Old_age 
Always       -       267
   5 Reallocated_Sector_Ct   0x0033   253   253   010    Pre-fail 
Always       -       0
   7 Seek_Error_Rate         0x000f   253   253   051    Pre-fail 
Always       -       0
   8 Seek_Time_Performance   0x0025   253   253   015    Pre-fail 
Offline      -       0
   9 Power_On_Hours          0x0032   100   100   000    Old_age 
Always       -       1806
  10 Spin_Retry_Count        0x0033   253   253   051    Pre-fail 
Always       -       0
  11 Calibration_Retry_Count 0x0012   253   253   000    Old_age 
Always       -       0
  12 Power_Cycle_Count       0x0032   100   100   000    Old_age 
Always       -       267
187 Unknown_Attribute       0x0032   253   253   000    Old_age   Always 
       -       262144
190 Temperature_Celsius     0x0022   145   124   000    Old_age   Always 
       -       31
194 Temperature_Celsius     0x0022   145   124   000    Old_age   Always 
       -       31
195 Hardware_ECC_Recovered  0x001a   100   100   000    Old_age   Always 
       -       264950591
196 Reallocated_Event_Count 0x0032   253   253   000    Old_age   Always 
       -       0
197 Current_Pending_Sector  0x0012   253   253   000    Old_age   Always 
       -       0
198 Offline_Uncorrectable   0x0030   253   253   000    Old_age 
Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always 
       -       0
200 Multi_Zone_Error_Rate   0x000a   100   100   000    Old_age   Always 
       -       0
201 Soft_Read_Error_Rate    0x000a   100   100   000    Old_age   Always 
       -       0
202 TA_Increase_Count       0x0032   253   253   000    Old_age   Always 
       -       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  Abort offline test  Aborted by host               90%      1806 
      -
# 2  Extended offline    Completed without error       00%      1806 
      -
# 3  Abort offline test  Aborted by host               80%      1804 
      -
# 4  Short offline       Completed without error       00%        57 
      -

If I have missed some important information, please advise me what you need.

Thank you
Nikolaj


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