read_dma错误

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昨晚开始机房bsd62连不通,中午进去一看,满屏的关于/dev/ad3   read_dma的信息.
重启fsck -y后正常启动,下面是关于smartctl的信息,是不是硬盘有问题呢?
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bsd62# smartctl -H /dev/ad3
smartctl version 5.36 [i386-portbld-freebsd6.2] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

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

打靶归来

bsd62#smartctl -l error /dev/ad3

smartctl version 5.36 [i386-portbld-freebsd6.2] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
Warning: ATA error count 874 inconsistent with error log pointer 5

ATA Error Count: 874 (device log contains only the most recent five errors)
        CR = Command Register [HEX]
        FR = Features Register [HEX]
        SC = Sector Count Register [HEX]
        SN = Sector Number Register [HEX]
        CL = Cylinder Low Register [HEX]
        CH = Cylinder High Register [HEX]
        DH = Device/Head Register [HEX]
        DC = Device Command Register [HEX]
        ER = Error register [HEX]
        ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 874 occurred at disk power-on lifetime: 10163 hours (423 days + 11 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 10 40 45 3e f2  Error: UNC 16 sectors at LBA = 0x023e4540 = 37635392

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 20 40 45 3e f2 08  30d+05:52:06.672  READ DMA
  c8 00 80 c0 87 38 f2 08  30d+05:52:06.656  READ DMA
  c8 00 80 40 87 38 f2 08  30d+05:52:06.656  READ DMA
  c8 00 20 20 87 38 f2 08  30d+05:52:06.656  READ DMA
  c8 00 80 a0 c9 32 f2 08  30d+05:52:06.656  READ DMA

Error 873 occurred at disk power-on lifetime: 10163 hours (423 days + 11 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 e0 2e 00 f0  Error: UNC 8 sectors at LBA = 0x00002ee0 = 12000

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 08 e0 2e 00 f0 08  30d+05:51:13.424  READ DMA
  c8 00 04 40 31 c7 f4 08  30d+05:51:13.408  READ DMA
  c8 00 10 80 00 00 f0 08  30d+05:51:13.392  READ DMA
  c8 00 02 00 00 00 f0 08  30d+05:49:21.328  READ DMA
  c8 00 01 01 00 00 f0 08  30d+05:49:21.328  READ DMA

Error 872 occurred at disk power-on lifetime: 10163 hours (423 days + 11 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 e0 2e 00 f0  Error: UNC 8 sectors at LBA = 0x00002ee0 = 12000

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 08 e0 2e 00 f0 08  30d+05:49:19.056  READ DMA
  c8 00 04 40 31 c7 f4 08  30d+05:49:19.040  READ DMA
  c8 00 10 80 00 00 f0 08  30d+05:49:19.040  READ DMA
  c8 00 04 40 31 c7 f4 08  30d+05:49:18.992  READ DMA
  c8 00 10 80 00 00 f0 08  30d+05:49:18.976  READ DMA

Error 871 occurred at disk power-on lifetime: 9716 hours (404 days + 20 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 20 40 2f 00 f0  Error: UNC 32 sectors at LBA = 0x00002f40 = 12096

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 20 40 2f 00 f0 08   8d+12:24:15.264  READ DMA
  c8 00 04 00 2f 00 f0 08   8d+12:24:15.264  READ DMA
  c8 00 80 80 31 c7 f4 08   8d+12:24:15.248  READ DMA
  c8 00 20 60 31 c7 f4 08   8d+12:24:15.248  READ DMA
  c8 00 80 60 73 c1 f4 08   8d+12:24:15.232  READ DMA

Error 870 occurred at disk power-on lifetime: 8916 hours (371 days + 12 hours)
  When the command that caused the error occurred, the device was in an unknown state.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 08 87 72 06 e0  Error: UNC 8 sectors at LBA = 0x00067287 = 422535

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 08 87 72 06 e0 00      00:14:48.576  READ DMA
  ca 00 08 bf 24 60 e0 00      00:14:45.376  WRITE DMA
  c8 00 10 af 5c e9 e0 00      00:14:42.080  READ DMA
  c8 00 10 2f 58 e9 e0 00      00:14:42.080  READ DMA
  c8 00 10 2f 5c e9 e0 00      00:14:42.080  READ DMA

hongzjx

ATA硬盘出这种问题正常!