求助：这块硬盘还有救么？

[astrobear]

是一个希捷的usb移动硬盘，放在箱子里移动了一次，再插上就不认了。
加电之后，开始的时候还可以用smartctl和hdparm看到，但是要等很久很久才出信息。然后再用同样的命令就找不到了，显示设备不存在。因为smartctl显示的错误可能跟dma读取有关（见后log），所以尝试用hdparm关闭dma，但是显示错误。

因为里面还有很重要的文件，所以请大家帮我看看，有没有可能抢救出一部分数据呢？

拜谢！


# hdparm -d 0 /dev/sdf

/dev/sdf:
setting using_dma to 0 (off)
HDIO_SET_DMA failed: Invalid argument
HDIO_GET_DMA failed: Invalid argument

# hdparm /dev/sdf

/dev/sdf:
multcount = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 364801/255/63, sectors = 5860533160, start = 0

# hdparm -d 0 /dev/sdf
/dev/sdf: No such device or address



# smartctl -a /dev/sdf
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.12.21-gentoo-r1-20141002] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.14 (AF)
Device Model: ST3000DM001-9YN166
Serial Number: S1F0YF9E
LU WWN Device Id: 5 000c50 05216a19b
Firmware Version: CC9F
User Capacity: 3,000,592,982,016 bytes [3.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Sat Nov 15 21:45:43 2014 CST
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: (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: ( 592) seconds.
Offline data collection
capabilities: (0x73) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
No 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: ( 333) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x3081) SCT Status 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 100 099 006 Pre-fail Always - 227595609
3 Spin_Up_Time 0x0003 093 092 000 Pre-fail Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 69
5 Reallocated_Sector_Ct 0x0033 051 051 036 Pre-fail Always - 64368
7 Seek_Error_Rate 0x000f 100 253 030 Pre-fail Always - 917056
9 Power_On_Hours 0x0032 092 092 000 Old_age Always - 7288
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 45
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0
187 Reported_Uncorrect 0x0032 037 037 000 Old_age Always - 63
188 Command_Timeout 0x0032 100 099 000 Old_age Always - 8 8 17
189 High_Fly_Writes 0x003a 099 099 000 Old_age Always - 1
190 Airflow_Temperature_Cel 0x0022 068 041 045 Old_age Always In_the_past 32 (1 197 32 29 0)
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 17
193 Load_Cycle_Count 0x0032 092 092 000 Old_age Always - 16511
194 Temperature_Celsius 0x0022 032 059 000 Old_age Always - 32 (0 20 0 0 0)
197 Current_Pending_Sector 0x0012 098 098 000 Old_age Always - 384
198 Offline_Uncorrectable 0x0010 098 098 000 Old_age Offline - 384
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 372h+02m+22.795s
241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 3488033815497
242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 65350015143

SMART Error Log Version: 1
ATA Error Count: 19 (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 19 occurred at disk power-on lifetime: 7288 hours (303 days + 16 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 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455

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 da f0 ff ff ff 4f 00 00:00:07.980 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:06.930 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:04.771 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:04.105 READ DMA EXT
25 da 08 08 61 00 40 00 00:00:04.099 READ DMA EXT

Error 18 occurred at disk power-on lifetime: 7288 hours (303 days + 16 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 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455

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 da f0 ff ff ff 4f 00 00:00:09.710 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:07.088 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:06.109 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:04.522 READ DMA EXT
25 da 08 08 61 00 40 00 00:00:04.520 READ DMA EXT

Error 17 occurred at disk power-on lifetime: 7288 hours (303 days + 16 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 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455

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 da 08 ff ff ff 4f 00 00:00:07.088 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:06.109 READ DMA EXT
25 da 08 ff ff ff 4f 00 00:00:04.522 READ DMA EXT
25 da 08 08 61 00 40 00 00:00:04.520 READ DMA EXT
25 da 08 78 45 00 40 00 00:00:04.321 READ DMA EXT

Error 16 occurred at disk power-on lifetime: 7287 hours (303 days + 15 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 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455

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 f0 ff ff ff 4f 00 00:00:08.333 READ DMA EXT
25 00 08 ff ff ff 4f 00 00:00:07.643 READ DMA EXT
25 00 08 ff ff ff 4f 00 00:00:04.950 READ DMA EXT
25 00 08 ff ff ff 4f 00 00:00:03.497 READ DMA EXT
25 00 08 08 61 00 40 00 00:00:03.492 READ DMA EXT

Error 15 occurred at disk power-on lifetime: 7287 hours (303 days + 15 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 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455

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 08 ff ff ff 4f 00 00:00:04.950 READ DMA EXT
25 00 08 ff ff ff 4f 00 00:00:03.497 READ DMA EXT
25 00 08 08 61 00 40 00 00:00:03.492 READ DMA EXT
25 00 08 78 45 00 40 00 00:00:03.487 READ DMA EXT
25 00 08 70 45 00 40 00 00:00:03.487 READ DMA EXT

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

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.

[astolia]

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