Re: raid5, eine Platte mit excessive reads

[Matthias Meyer <matthias.meyer@gmx.li>]

Michael Stummvoll wrote:

> Hi,
> 
> hast du mal SMART drüber laufen lassen? Vlt hat die eine Platte einfach
> einen Treffer weg.
> 
> Liebe Grüße,
> Micha

Deutliche Unterschiede sehe ich nur bei "Multi_Zone_Error_Rate":
/dev/sdc=199, /dev/sdd=113, /dev/sde=2054 und /dev/sdf=8094 und "Raw_Read_Error_Rate":
/dev/sdc=7, /dev/sdd=202, /dev/sde=578 und /dev/sdf=177

/dev/sdf (die mit den excessiven reads)
fileserver:~# smartctl -d 3ware,7 -A /dev/twa0
smartctl 5.40 2010-07-12 r3124 [i686-pc-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
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   100   100   051    Pre-fail  Always       -       177
  2 Throughput_Performance  0x0026   252   252   000    Old_age   Always       -       0
  3 Spin_Up_Time            0x0023   069   068   025    Pre-fail  Always       -       9627
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       100
  5 Reallocated_Sector_Ct   0x0033   252   252   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   252   252   051    Old_age   Always       -       0
  8 Seek_Time_Performance   0x0024   252   252   015    Old_age   Offline      -       0
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       15592
 10 Spin_Retry_Count        0x0032   252   252   051    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0032   252   252   000    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       25
181 Program_Fail_Cnt_Total  0x0022   088   088   000    Old_age   Always       -       280184753
191 G-Sense_Error_Rate      0x0022   100   100   000    Old_age   Always       -       4
192 Power-Off_Retract_Count 0x0022   252   252   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0002   064   064   000    Old_age   Always       -       31 (Lifetime Min/Max 19/35)
195 Hardware_ECC_Recovered  0x003a   100   100   000    Old_age   Always       -       0
196 Reallocated_Event_Count 0x0032   252   252   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   252   252   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   252   252   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0036   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x002a   100   100   000    Old_age   Always       -       8094
223 Load_Retry_Count        0x0032   252   252   000    Old_age   Always       -       0
225 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       102

/dev/sdc (Beispielhaft eine der "normalen" Platten)
fileserver:~# smartctl -d 3ware,4 -A /dev/twa0
smartctl 5.40 2010-07-12 r3124 [i686-pc-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
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   100   100   051    Pre-fail  Always       -       7
  2 Throughput_Performance  0x0026   252   252   000    Old_age   Always       -       0
  3 Spin_Up_Time            0x0023   069   068   025    Pre-fail  Always       -       9607
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       102
  5 Reallocated_Sector_Ct   0x0033   252   252   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   252   252   051    Old_age   Always       -       0
  8 Seek_Time_Performance   0x0024   252   252   015    Old_age   Offline      -       0
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       15637
 10 Spin_Retry_Count        0x0032   252   252   051    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       1
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       24
181 Program_Fail_Cnt_Total  0x0022   091   091   000    Old_age   Always       -       214327496
191 G-Sense_Error_Rate      0x0022   100   100   000    Old_age   Always       -       69
192 Power-Off_Retract_Count 0x0022   252   252   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0002   064   064   000    Old_age   Always       -       30 (Lifetime Min/Max 19/35)
195 Hardware_ECC_Recovered  0x003a   100   100   000    Old_age   Always       -       0
196 Reallocated_Event_Count 0x0032   252   252   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   252   252   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   252   252   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0036   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x002a   100   100   000    Old_age   Always       -       199
223 Load_Retry_Count        0x0032   100   100   000    Old_age   Always       -       1
225 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       -       104

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