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AndiZed
n00b
Joined: 28 May 2005
Posts: 23
Location: Franconia / Germany
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 Posted: Mon Aug 08, 2005 8:42 pm Post subject: hd dying / how to save data from crypted partition? |
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hi, i got a serious problem with my hd, which contains a crypted (AES256) partition.
i usually mount it via loop device using the command:
| Code: | | mount -t reiserfs -o loop=/dev/loop0,encryption=aes-256 /dev/hdc1 /mnt/crypt |
a few hours ago i copied a bigger amount of data onto this disc and realized, the system was getting slower and slower. hdparm -T /dev/hdc resulted in a speed at about 280KB/s. i realized there must be something wrong, so i shut the computer down and restarted it (i was thinking of a software problem at this point).
now after the reboot i can not mount the disc anymore; i get the following output:
| Code: | mount: wrong fs type, bad option, bad superblock on /dev/loop0,
or too many mounted file systems
(could this be the IDE device where you in fact use
ide-scsi so that sr0 or sda or so is needed?)
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(this is the same output i get when entering a wrong password, the only difference is the much longer delay between entering the password and receiving the error message when the password is valid)
is there a way to mount the hard disc (which is obviously about to die) at least partially to save some data?
heres the output of smartctl -a /dev/hdc (looks bad, doesnt it?)
| Code: | smartctl version 5.33 [i686-pc-linux-gnu] Copyright (C) 2002-4 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: Maxtor 6Y120L0
Serial Number: Y40L2W6E
Firmware Version: YAR41VW0
User Capacity: 122,942,324,736 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 0
Local Time is: Mon Aug 8 22:16:52 2005 CEST
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: ( 116) The previous self-test completed having
the read element of the test failed.
Total time to complete Offline
data collection: ( 242) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No 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.
No General Purpose Logging support.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 63) minutes.
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
3 Spin_Up_Time 0x0027 201 190 063 Pre-fail Always - 11299
4 Start_Stop_Count 0x0032 253 253 000 Old_age Always - 853
5 Reallocated_Sector_Ct 0x0033 237 237 063 Pre-fail Always - 162
6 Read_Channel_Margin 0x0001 253 253 100 Pre-fail Offline - 0
7 Seek_Error_Rate 0x000a 253 252 000 Old_age Always - 0
8 Seek_Time_Performance 0x0027 251 247 187 Pre-fail Always - 56961
9 Power_On_Minutes 0x0032 226 226 000 Old_age Always - 740h+46m
10 Spin_Retry_Count 0x002b 253 252 157 Pre-fail Always - 0
11 Calibration_Retry_Count 0x002b 253 252 223 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 252 252 000 Old_age Always - 703
192 Power-Off_Retract_Count 0x0032 253 253 000 Old_age Always - 0
193 Load_Cycle_Count 0x0032 253 253 000 Old_age Always - 0
194 Temperature_Celsius 0x0032 253 253 000 Old_age Always - 40
195 Hardware_ECC_Recovered 0x000a 253 252 000 Old_age Always - 2261
196 Reallocated_Event_Count 0x0008 240 240 000 Old_age Offline - 13
197 Current_Pending_Sector 0x0008 238 238 000 Old_age Offline - 159
198 Offline_Uncorrectable 0x0008 181 181 000 Old_age Offline - 72
199 UDMA_CRC_Error_Count 0x0008 195 185 000 Old_age Offline - 15
200 Multi_Zone_Error_Rate 0x000a 253 252 000 Old_age Always - 0
201 Soft_Read_Error_Rate 0x000a 253 249 000 Old_age Always - 45
202 TA_Increase_Count 0x000a 253 252 000 Old_age Always - 0
203 Run_Out_Cancel 0x000b 253 252 180 Pre-fail Always - 312
204 Shock_Count_Write_Opern 0x000a 253 252 000 Old_age Always - 0
205 Shock_Rate_Write_Opern 0x000a 253 252 000 Old_age Always - 0
207 Spin_High_Current 0x002a 253 252 000 Old_age Always - 0
208 Spin_Buzz 0x002a 253 252 000 Old_age Always - 0
209 Offline_Seek_Performnce 0x0024 198 195 000 Old_age Offline - 0
99 Unknown_Attribute 0x0004 253 253 000 Old_age Offline - 0
100 Unknown_Attribute 0x0004 253 253 000 Old_age Offline - 0
101 Unknown_Attribute 0x0004 253 253 000 Old_age Offline - 0
SMART Error Log Version: 1
ATA Error Count: 3190 (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 3190 occurred at disk power-on lifetime: 8886 hours (370 days + 6 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 01 06 01 00 e0 Error: UNC 1 sectors at LBA = 0x00000106 = 262
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 01 06 01 00 e0 08 03:13:13.664 READ DMA
c8 00 02 05 01 00 e0 08 03:13:12.640 READ DMA
c8 00 03 04 01 00 e0 08 03:13:11.616 READ DMA
c8 00 04 03 01 00 e0 08 03:13:10.608 READ DMA
c8 00 05 02 01 00 e0 08 03:13:09.584 READ DMA
Error 3189 occurred at disk power-on lifetime: 8886 hours (370 days + 6 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 02 05 01 00 e0 Error: UNC 2 sectors at LBA = 0x00000105 = 261
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 02 05 01 00 e0 08 03:13:12.640 READ DMA
c8 00 03 04 01 00 e0 08 03:13:11.616 READ DMA
c8 00 04 03 01 00 e0 08 03:13:10.608 READ DMA
c8 00 05 02 01 00 e0 08 03:13:09.584 READ DMA
c8 00 06 01 01 00 e0 08 03:13:08.560 READ DMA
Error 3188 occurred at disk power-on lifetime: 8886 hours (370 days + 6 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 03 04 01 00 e0 Error: UNC 3 sectors at LBA = 0x00000104 = 260
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 03 04 01 00 e0 08 03:13:11.616 READ DMA
c8 00 04 03 01 00 e0 08 03:13:10.608 READ DMA
c8 00 05 02 01 00 e0 08 03:13:09.584 READ DMA
c8 00 06 01 01 00 e0 08 03:13:08.560 READ DMA
c8 00 07 00 01 00 e0 08 03:13:07.552 READ DMA
Error 3187 occurred at disk power-on lifetime: 8886 hours (370 days + 6 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 04 03 01 00 e0 Error: UNC 4 sectors at LBA = 0x00000103 = 259
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 04 03 01 00 e0 08 03:13:10.608 READ DMA
c8 00 05 02 01 00 e0 08 03:13:09.584 READ DMA
c8 00 06 01 01 00 e0 08 03:13:08.560 READ DMA
c8 00 07 00 01 00 e0 08 03:13:07.552 READ DMA
c8 00 08 ff 00 00 e0 08 03:13:06.528 READ DMA
Error 3186 occurred at disk power-on lifetime: 8886 hours (370 days + 6 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 05 02 01 00 e0 Error: UNC 5 sectors at LBA = 0x00000102 = 258
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 05 02 01 00 e0 08 03:13:09.584 READ DMA
c8 00 06 01 01 00 e0 08 03:13:08.560 READ DMA
c8 00 07 00 01 00 e0 08 03:13:07.552 READ DMA
c8 00 08 ff 00 00 e0 08 03:13:06.528 READ DMA
c8 00 09 fe 00 00 e0 08 03:13:05.504 READ DMA
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 40% 8884 207
# 2 Extended offline Aborted by host 70% 8884 -
# 3 Short offline Completed: read failure 60% 8884 207
# 4 Short offline Completed: read failure 60% 8884 207
# 5 Short offline Completed: read failure 60% 8884 207
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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btw, another weird thing:
according to the smartmontools the harddisc had a total running time of 370 days.. when i bought this hd, maxtor limited the warranty time to 1 year... looks like they really knew what they were doing. |
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Dlareh
Advocate
Joined: 06 Aug 2005
Posts: 2102
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| Posted: Mon Aug 08, 2005 9:28 pm Post subject: |
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| Code: | emerge dd-rescue
dd_rescue -l /path/to/a/logfile /dev/hdc1 ????? |
?????? should preferably be a partition of same size or slightly bigger. It can also be a file on a larger mounted partition... though I'm not sure if you'll be able to mount that with crypt (since it requires an -o loop in and of itself)
Offhand I can tell you that the KNOPPIX 4.0 DVD has dd_rescue; the CDROMs should as well.... |
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AndiZed
n00b
Joined: 28 May 2005
Posts: 23
Location: Franconia / Germany
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| Posted: Mon Aug 08, 2005 10:35 pm Post subject: |
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| thx! i'll give that tool a try, after i organized another 120gb disc. |
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Dlareh
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Joined: 06 Aug 2005
Posts: 2102
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Djento
n00b
Joined: 03 May 2005
Posts: 66
Location: Bruxelles
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| Posted: Mon Aug 08, 2005 11:35 pm Post subject: |
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it's a bad idea to crypt a partition, a simple bad sector and your partition is unrecoverable.
there's another way to use this kind of feature. cryptic fs... but i can't remember and i think it was OpenBSD only 
best! |
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Dlareh
Advocate
Joined: 06 Aug 2005
Posts: 2102
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| Posted: Mon Aug 08, 2005 11:52 pm Post subject: |
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| Djento wrote: | | it's a bad idea to crypt a partition, a simple bad sector and your partition is unrecoverable. |
Ouch. Why is that? You'd think that a bad sector tolerant method would be possible.... |
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