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Ehm, mám takový nejapný dotaz, dá se něco udělat s diskem, který hlásí to co níže?

Je to starý USB disk Western Digital My Book, minulý týden jsem ho zaplnit po okraj daty a pak už z něj nic nepřečetl...

Nov  4 19:21:33 test kernel: usb 2-2: new high-speed USB device number 3 using ehci-pci
Nov  4 19:21:34 test kernel: usb 2-2: New USB device found, idVendor=1058, idProduct=1103
Nov  4 19:21:34 test kernel: usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov  4 19:21:34 test kernel: usb 2-2: Product: My Book
Nov  4 19:21:34 test kernel: usb 2-2: Manufacturer: Western Digital
Nov  4 19:21:34 test kernel: usb 2-2: SerialNumber: 57442D574341534D30303137353737
Nov  4 19:21:34 test kernel: usb-storage 2-2:1.0: USB Mass Storage device detected
Nov  4 19:21:34 test kernel: scsi host9: usb-storage 2-2:1.0
Nov  4 19:21:34 test kernel: input: Western Digital My Book as /devices/pci0000:00/0000:00:13.2/usb2/2-2/2-2:1.1/0003:1058:1103.0006/input/input21
Nov  4 19:21:34 test kernel: hid-generic 0003:1058:1103.0006: input,hidraw4: USB HID v1.11 Device [Western Digital My Book] on usb-0000:00:13.2-2/input1
Nov  4 19:21:34 test mtp-probe: checking bus 2, device 3: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-2"
Nov  4 19:21:34 test mtp-probe: bus: 2, device: 3 was not an MTP device
Nov  4 19:21:35 test kernel: scsi 9:0:0:0: Direct-Access     WD       My Book          1025 PQ: 0 ANSI: 4
Nov  4 19:21:35 test kernel: sd 9:0:0:0: Attached scsi generic sg3 type 0
Nov  4 19:21:35 test kernel: sd 9:0:0:0: [sdc] 1465149168 512-byte logical blocks: (750 GB/698 GiB)
Nov  4 19:21:35 test kernel: sd 9:0:0:0: [sdc] Write Protect is off
Nov  4 19:21:35 test kernel: sd 9:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Nov  4 19:21:35 test kernel: sdc: sdc1
Nov  4 19:21:35 test kernel: sd 9:0:0:0: [sdc] Attached SCSI disk
Nov  4 19:22:00 test kernel: sd 9:0:0:0: [sdc] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Nov  4 19:22:00 test kernel: sd 9:0:0:0: [sdc] Sense Key : Medium Error [current] 
Nov  4 19:22:00 test kernel: sd 9:0:0:0: [sdc] Add. Sense: Data phase error
Nov  4 19:22:00 test kernel: sd 9:0:0:0: [sdc] CDB: Read(10) 28 00 2b aa a2 87 00 00 f0 00
Nov  4 19:22:00 test kernel: blk_update_request: I/O error, dev sdc, sector 732603015
Nov  4 19:22:25 test kernel: sd 9:0:0:0: [sdc] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Nov  4 19:22:25 test kernel: sd 9:0:0:0: [sdc] Sense Key : Medium Error [current] 
Nov  4 19:22:25 test kernel: sd 9:0:0:0: [sdc] Add. Sense: Data phase error
Nov  4 19:22:25 test kernel: sd 9:0:0:0: [sdc] CDB: Read(10) 28 00 2b aa a3 09 00 00 06 00
Nov  4 19:22:25 test kernel: blk_update_request: I/O error, dev sdc, sector 732603145
Nov  4 19:22:25 test kernel: Buffer I/O error on dev sdc1, logical block 732603082, async page read
Nov  4 19:22:25 test kernel: Buffer I/O error on dev sdc1, logical block 732603083, async page read
Nov  4 19:22:25 test kernel: Buffer I/O error on dev sdc1, logical block 732603084, async page read
Nov  4 19:22:25 test kernel: Buffer I/O error on dev sdc1, logical block 732603085, async page read
Nov  4 19:22:25 test kernel: Buffer I/O error on dev sdc1, logical block 732603086, async page read
Nov  4 19:22:25 test kernel: Buffer I/O error on dev sdc1, logical block 732603087, async page read

Jde vlastně o USB rámeček na disk, uvnitř je Green Power Western Digital disk, když ho připojím napřímo přes SATA, dostanu:

Nov  4 19:36:35 test kernel: ata3.00: exception Emask 0x0 SAct 0x200000 SErr 0x0 action 0x0
Nov  4 19:36:35 test kernel: ata3.00: irq_stat 0x40000008
Nov  4 19:36:35 test kernel: ata3.00: failed command: READ FPDMA QUEUED
Nov  4 19:36:35 test kernel: ata3.00: cmd 60/01:a8:0e:a3:aa/00:00:2b:00:00/40 tag 21 ncq 512 in#012         res 41/40:00:0e:a3:aa/00:00:2b:00:00/40 Emask 0x409 (media error) F
Nov  4 19:36:35 test kernel: ata3.00: status: { DRDY ERR }
Nov  4 19:36:35 test kernel: ata3.00: error: { UNC }
Nov  4 19:36:35 test kernel: ata3.00: configured for UDMA/133
Nov  4 19:36:35 test kernel: sd 2:0:0:0: [sdc] tag#21 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Nov  4 19:36:35 test kernel: sd 2:0:0:0: [sdc] tag#21 Sense Key : Medium Error [current] [descriptor] 
Nov  4 19:36:35 test kernel: sd 2:0:0:0: [sdc] tag#21 Add. Sense: Unrecovered read error - auto reallocate failed
Nov  4 19:36:35 test kernel: sd 2:0:0:0: [sdc] tag#21 CDB: Read(10) 28 00 2b aa a3 0e 00 00 01 00
Nov  4 19:36:35 test kernel: blk_update_request: I/O error, dev sdc, sector 732603150
Nov  4 19:36:35 test kernel: Buffer I/O error on dev sdc1, logical block 732603087, async page read
Nov  4 19:36:35 test kernel: ata3: EH complete

Přes USB se mi pomocí smartctl nepodařilo nic přečíst, po připojení napřímo přes SATA dostávám:

root@test ondrej# smartctl --all /dev/sdc
smartctl 6.4 2015-06-04 r4109 [x86_64-linux-4.2.3-200.fc22.x86_64] (local build)
Copyright (C) 2002-15, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Caviar Green
Device Model:     WDC WD7500AACS-00ZJB0
Serial Number:    WD-WCASM0017577
LU WWN Device Id: 5 0014ee 256333e1f
Firmware Version: 01.01B01
User Capacity:    750,156,374,016 bytes [750 GB]
Sector Size:      512 bytes logical/physical
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS (minor revision not indicated)
SATA Version is:  SATA 2.5, 3.0 Gb/s
Local Time is:    Wed Nov  4 19:39:25 2015 CET
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
See vendor-specific Attribute list for marginal Attributes.

General SMART Values:
Offline data collection status:  (0x84)	Offline data collection activity
					was suspended by an interrupting command from host.
					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: 		(20400) 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: 	 ( 235) minutes.
Conveyance self-test routine
recommended polling time: 	 (   5) minutes.
SCT capabilities: 	       (0x303f)	SCT Status supported.
					SCT Error Recovery Control 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     0x000f   200   200   051    Pre-fail  Always       -       0
  3 Spin_Up_Time            0x0003   186   013   021    Pre-fail  Always   In_the_past 5700
  4 Start_Stop_Count        0x0032   085   085   000    Old_age   Always       -       15847
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000e   200   200   051    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   048   048   000    Old_age   Always       -       38234
 10 Spin_Retry_Count        0x0012   100   100   051    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0012   100   100   051    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   099   099   000    Old_age   Always       -       1244
192 Power-Off_Retract_Count 0x0032   199   199   000    Old_age   Always       -       985
193 Load_Cycle_Count        0x0032   017   017   000    Old_age   Always       -       549338
194 Temperature_Celsius     0x0022   121   071   000    Old_age   Always       -       29
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0012   200   200   000    Old_age   Always       -       18
198 Offline_Uncorrectable   0x0010   200   200   000    Old_age   Offline      -       18
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   051    Old_age   Offline      -       5

SMART Error Log Version: 1
ATA Error Count: 536 (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 536 occurred at disk power-on lifetime: 38234 hours (1593 days + 2 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
  -- -- -- -- -- -- --
  40 51 01 0e a3 aa 40  Error: UNC at LBA = 0x00aaa30e = 11182862

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 01 a8 0e a3 aa 2b 08      00:00:34.626  READ FPDMA QUEUED
  60 01 a0 0d a3 aa 2b 08      00:00:34.626  READ FPDMA QUEUED
  60 01 98 0c a3 aa 2b 08      00:00:34.626  READ FPDMA QUEUED
  60 01 90 0b a3 aa 2b 08      00:00:34.626  READ FPDMA QUEUED
  60 01 88 0a a3 aa 2b 08      00:00:34.626  READ FPDMA QUEUED

Error 535 occurred at disk power-on lifetime: 38234 hours (1593 days + 2 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
  -- -- -- -- -- -- --
  40 51 00 0e a3 aa 40  Error: UNC at LBA = 0x00aaa30e = 11182862

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 d8 87 a2 aa 2b 08      00:00:30.461  READ FPDMA QUEUED
  60 00 d0 87 a1 aa 2b 08      00:00:30.459  READ FPDMA QUEUED
  60 00 c8 87 a0 aa 2b 08      00:00:30.458  READ FPDMA QUEUED
  60 00 c0 87 9f aa 2b 08      00:00:30.456  READ FPDMA QUEUED
  60 00 b8 87 9e aa 2b 08      00:00:30.454  READ FPDMA QUEUED

Error 534 occurred at disk power-on lifetime: 38234 hours (1593 days + 2 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
  -- -- -- -- -- -- --
  40 51 06 09 a3 aa 40  Error: UNC 6 sectors at LBA = 0x00aaa309 = 11182857

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 06 09 a3 aa 2b 00      00:02:34.067  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:30.133  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:26.197  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:21.997  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:17.930  READ DMA EXT

Error 533 occurred at disk power-on lifetime: 38234 hours (1593 days + 2 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
  -- -- -- -- -- -- --
  40 51 06 09 a3 aa 40  Error: UNC 6 sectors at LBA = 0x00aaa309 = 11182857

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 06 09 a3 aa 2b 00      00:02:30.133  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:26.197  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:21.997  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:17.930  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:13.994  READ DMA EXT

Error 532 occurred at disk power-on lifetime: 38234 hours (1593 days + 2 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
  -- -- -- -- -- -- --
  40 51 06 09 a3 aa 40  Error: UNC 6 sectors at LBA = 0x00aaa309 = 11182857

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 06 09 a3 aa 2b 00      00:02:26.197  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:21.997  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:17.930  READ DMA EXT
  25 00 06 09 a3 aa 2b 00      00:02:13.994  READ DMA EXT
  25 00 01 08 a3 aa 2b 00      00:02:13.994  READ DMA EXT

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed: read failure       90%     38226         566431729
# 2  Short offline       Completed: read failure       90%     38226         566431729
# 3  Extended offline    Completed: read failure       90%     38226         566431729
# 4  Conveyance offline  Completed: read failure       90%     38226         566431729
# 5  Short offline       Completed: read failure       90%     38226         566431729
# 6  Short offline       Completed: read failure       90%     38226         566431729

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.

Lze nějak zachránit data? Proč to píše Unrecovered read error - auto reallocate failed? Nešlo by ta data nějak umazat aby mohl realokovat?

Nejsem v tomhle kovaný, budu rád za radu.