关于 fsck 和硬盘坏道的保留空间

关于 fsck 和硬盘坏道的保留空间

因此,当您对硬盘驱动器进行完整检查fsck以查找坏块时,它会忽略或免除驱动器上放置(重新分配)坏块的空间吗?

我说的是 SMART 属性隐含的空间:

196 Reallocated_Event_Count

5 Reallocated_Sector_Ct

我之所以问这个问题是因为当我运行时:

# smartctl -a /dev/sda

我得到以下输出:

smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-40-generic] (local build)

Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     ST320LT007-9ZV142
Serial Number:    W0Q7N7DH
LU WWN Device Id: 5 000c50 05dc9bc9e
Firmware Version: 0004LVM1
User Capacity:    320,072,933,376 bytes [320 GB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  ATA-8-ACS revision 4
Local Time is:    Thu Apr 11 23:02:21 2013 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:        (    0) 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:    (   1) minutes.
Extended self-test routine
recommended polling time:    (  63) minutes.
Conveyance self-test routine
recommended polling time:    (   2) minutes.
SCT capabilities:          (0x303b) SCT Status supported.
                    SCT Error Recovery Control supported.
                    SCT Feature Control supported.
                    SCT Data Table supported.

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   114   099   034    Pre-fail  Always       -       70846592
  3 Spin_Up_Time            0x0003   098   098   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   099   099   020    Old_age   Always       -       1442
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   068   060   030    Pre-fail  Always       -       6535747
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       258518376513933
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       300
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   098   000    Old_age   Always       -       152
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   064   053   045    Old_age   Always       -       36 (Min/Max 36/38)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       4
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       13
193 Load_Cycle_Count        0x0032   099   099   000    Old_age   Always       -       2977
194 Temperature_Celsius     0x0022   036   047   000    Old_age   Always       -       36 (0 15 0 0)
195 Hardware_ECC_Recovered  0x001a   057   054   000    Old_age   Always       -       70846592
196 Reallocated_Event_Count 0x000f   100   100   030    Pre-fail  Always       -       356 (31006, 0)
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
250 Read_Error_Retry_Rate   0x0000   001   001   000    Old_age   Offline      -       18126
251 Unknown_Attribute       0x0000   001   001   000    Old_age   Offline      -       33297
252 Unknown_Attribute       0x0000   001   001   000    Old_age   Offline      -       14334
254 Free_Fall_Sensor        0x0032   100   100   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  Vendor (0x50)       Completed without error       00%         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.

属性196 Reallocated_Event_Count原始值让我担心,我计划今晚通宵运行,fsck看看/dev/sda是否真的有坏块。

提前致谢!

答案1

因此,当您在硬盘上执行完整的 fsck 来查找坏块时,它会忽略或免除驱动器上放置(重新分配)坏块的空间吗?

它忽略它,因为该空间无法从驱动器外部寻址。

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