sslug-teknik team mailing list archive

["Jeppe Koefoed" <jeppe@xxxxxxx>]

Hej Sslugger

Jeg har nu haft mine nye (Samsung) diske i brug i 10 dage. Kører fint og rimeligt lydløst. Igår aftes gik maskinen så ned imens jeg forsøgte at få Mythtv til at makke ret. Ved boot skal filsystemet checkes og her starter problemerne:

Både / og /home er fyldt med fejl i tusindvis. Det er begge raid1 devices, men det hjælper jo ikke når det er filsystemet som er i stykker. 
Det som undrer mig er at jeg ikke har opdaget det før. Jeg har en del mail kørende og alting har fungeret fint. Alligevel er der så mange fejl at de næppe kan være opstået pga. at cachen ikke nåede at blive flushet. Jeg kører ext3 på begge filsystemer. 
Efter at de gamle diske er kommet på plads prøver jeg at finde ud af hvad der er i vejen med de nye diske med korrupteret filsystem. 
"/" består af raid1 med begge nye diske. Mange filer mangler nu, også fra /sbin
("/home" ligeledes raid1 og fyldt med fejl)
"/files" ligger på /dev/hda5, kører ext3 og har ingen fejl overhovedet.
"/video" ligger på /dev/hdg5, kører xfs og er fyldt med fejl.

Jeg får nu en mistanke om at den ene disk er i stykker, nemlig /dev/hdc. For at komme tættere på installerer jeg på ny og har nu haft kørt smartctl -a på begge diske. Den ene melder alt vel (hda) imens den anden (hdc) melder nedenstående.
Mit spørgsmål er nu: Har nogen af jer erfaring med hvad fejlen "READ DMA" betyder, og måske endnu bedre hvad jeg gør for at det ikke sker igen ?
Btw - som I kan se har jeg kørt selftest uden problemer.

/Jeppe

<cut>
[root@mail root]# smartctl -a /dev/hdc
smartctl version 5.21 Copyright (C) 2002-3 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===
Device Model:     SAMSUNG SP1614N
Serial Number:    S016J10X436826
Firmware Version: TM100-24
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   7
ATA Standard is:  ATA/ATAPI-7 T13 1532D revision 0
Local Time is:    Thu Jul  1 21:23:35 2004 CEST

==> WARNING: Contact developers at smartmontools-support@xxxxxxxxxxxxxxxxxxxxx; may need -F samsung[2] enabled.


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:  (0x00) Offline data collection activity was
                                        never started.
                                        Auto Offline Data Collection: Disabled.
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:                 (5760) seconds.
Offline data collection
capabilities:                    (0x1b) 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.
                                        No 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.
                                        No General Purpose Logging support.
Short self-test routine 
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        (  96) 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     0x000b   100   100   051    Pre-fail  Always       -       0
  3 Spin_Up_Time            0x0007   066   054   000    Pre-fail  Always       -       5824
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       30
  5 Reallocated_Sector_Ct   0x0033   253   253   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000b   253   253   051    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0024   253   253   000    Old_age   Offline      -       0
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       19708
 10 Spin_Retry_Count        0x0013   253   253   049    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       14
194 Temperature_Celsius     0x0022   127   109   000    Old_age   Always       -       37
195 Hardware_ECC_Recovered  0x000a   100   100   000    Old_age   Always       -       39708163
196 Reallocated_Event_Count 0x0012   253   253   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0033   253   253   010    Pre-fail  Always       -       0
198 Offline_Uncorrectable   0x0031   253   253   010    Pre-fail  Offline      -       0
199 UDMA_CRC_Error_Count    0x000b   100   100   051    Pre-fail  Always       -       0
200 Multi_Zone_Error_Rate   0x000b   100   100   051    Pre-fail  Always       -       0
201 Soft_Read_Error_Rate    0x000b   100   100   051    Pre-fail  Always       -       0

SMART Error Log Version: 1
Warning: ATA error count 512 inconsistent with error log pointer 5

ATA Error Count: 512 (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]
Timestamp = decimal seconds since the previous disk power-on.
Note: timestamp "wraps" after 2^32 msec = 49.710 days.

Error 512 occurred at disk power-on lifetime: 4 hours
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  04 51 00 00 4f c2 e0

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Timestamp  Command/Feature_Name
  -- -- -- -- -- -- -- --   ---------  --------------------
  b0 da 00 00 4f c2 e0 00   12091.625  SMART RETURN STATUS
  ec 00 00 ba c0 63 e0 00   12091.500  IDENTIFY DEVICE
  00 00 01 01 00 00 a0 00   12036.438  NOP [Abort queued commands]
  00 03 01 01 00 00 a0 00   11939.000  NOP [Reserved subcommand]
  ec 00 01 00 00 00 e0 00   11541.500  IDENTIFY DEVICE

Error 511 occurred at disk power-on lifetime: 0 hours
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  04 51 00 00 4f c2 a0

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Timestamp  Command/Feature_Name
  -- -- -- -- -- -- -- --   ---------  --------------------
  b0 da 00 00 4f c2 a0 00    3699.688  SMART RETURN STATUS
  c8 03 01 00 00 00 e0 00     109.750  READ DMA
  c8 03 01 00 00 00 e0 00     109.750  READ DMA
  c8 03 01 00 00 00 e0 00     109.750  READ DMA
  c8 03 01 00 00 00 e0 00     109.688  READ DMA

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%       163         -
# 2  Short offline       Completed without error       00%       159         -
<cut>