Sounds like you already have smartmontools installed. Use smartctl to look at your disks SMART data and also run the built in diagnostics.
ddrescue is a good tool to recover your data. Look at the example section in the manual. info ddrescue. The first pass will read the whole disk with a large block size, skipping all read errors to save as much as possible as quickly as possible. The second run then reads only the failed sectors from the first run with smaller block sizes and retries multiple times. Then fsck the fresh copy and hope you got everything.
I just did this successfully on a windows drive. Only one 512b block failed completely.
Sendt fra min Sony Xperia™-smarttelefon
---- Paul Smith skrev ----
Dear All,
I am getting the following warning on a terminal window (F22, :
-------------------------
WARNING: Your hard drive is failing
Device: /dev/sda [SAT], 1 Offline uncorrectable sectors
-------------------------
(Please, find below the output of smartctl -a /dev/sda)
Is that a serious problem? What should I do?
Thanks in advance,
Paul
-------------------------
# smartctl -a /dev/sda
smartctl 6.4 2015-06-04 r4109 [x86_64-linux-4.1.4-200.fc22.x86_64] (local build)
Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Green
Device Model: WDC WD20EARX-00PASB0
Serial Number: WD-WCAZAJ822299
LU WWN Device Id: 5 0014ee 2b260482b
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Sun Aug 16 15:36:46 2015 WEST
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: (37500) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 361) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3035) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
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 200 200 051 Pre-fail
Always - 22
3 Spin_Up_Time 0x0027 172 165 021 Pre-fail
Always - 6383
4 Start_Stop_Count 0x0032 099 099 000 Old_age
Always - 1446
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail
Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age
Always - 0
9 Power_On_Hours 0x0032 089 089 000 Old_age
Always - 8161
10 Spin_Retry_Count 0x0032 100 100 000 Old_age
Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age
Always - 0
12 Power_Cycle_Count 0x0032 099 099 000 Old_age
Always - 1446
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age
Always - 18
193 Load_Cycle_Count 0x0032 136 136 000 Old_age
Always - 192777
194 Temperature_Celsius 0x0022 116 107 000 Old_age
Always - 34
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age
Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age
Always - 1
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age
Offline - 1
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age
Always - 0
200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age
Offline - 1
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 Short offline Completed without error 00% 4062 -
# 2 Short offline Completed without error 00% 4062 -
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.
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