Hi all,
I'm trying to assist a friend to recover their RAID array, it consists
of 4 drives, most likely in RAID10. It was a linux based NAS (AFAIK). I
would really appreciate any tips or suggestions...
First, the bad news:
mdadm --misc --detail /dev/sd[abcd]
mdadm: /dev/sda does not appear to be an md device
mdadm: /dev/sdb does not appear to be an md device
mdadm: /dev/sdc does not appear to be an md device
mdadm: /dev/sdd does not appear to be an md device
mdadm --misc --examine /dev/sd[abcd]
/dev/sda:
MBR Magic : aa55
/dev/sdb:
MBR Magic : aa55
/dev/sdc:
MBR Magic : aa55
/dev/sdd:
MBR Magic : aa55
This really doesn't look promising.... but the disks themselves look
"healthy"... at least mostly.
Looking at the content of the drives, it might be possible that all four
drives were in RAID1 ... at least, I can find identical data on all four
of the drives:
Running this command for each drive:
strings /dev/sdd |cat -n |less
looking for some "text", and I find what looks like a log file snipped
which is identical across all four drives. Thats 25 lines of output,
that exists on the same output line number, matching across all 4
drives. So perhaps I have a 4 drive RAID1, which I guess should make it
easier to recover from.
Disks are /dev/sda /dev/sdb /dev/sdc /dev/sdd, all identical
"partitions" that don't seem to exist, but there is a MBR partition table
gdisk -l /dev/sda
GPT fdisk (gdisk) version 1.0.1
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: not present
***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory.
***************************************************************
Disk /dev/sda: 1953525168 sectors, 931.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 145F71F0-4D0B-4941-9F9E-2C5301BF518F
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Partitions will be aligned on 2048-sector boundaries
Total free space is 1953525101 sectors (931.5 GiB)
The first two drives look like this (lots of read errors), the second
two look perfectly clean...
/dev/sda
Number Start (sector) End (sector) Size Code Name
=== START OF INFORMATION SECTION ===
Device Model: ST1000NM0033 81Y9807 81Y3867IBM
Serial Number: Z1W2ZG3M
LU WWN Device Id: 5 000c50 079c48262
Firmware Version: BB5A
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Mar 6 14:44:32 2017 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM feature is: Unavailable
Rd look-ahead is: Enabled
Write cache is: Enabled
ATA Security is: Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: 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: ( 592) 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: ( 115) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x50bd) 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 FLAGS VALUE WORST THRESH FAIL RAW_VALUE
1 Raw_Read_Error_Rate POSR-- 081 063 044 - 120486603
3 Spin_Up_Time PO---- 097 096 000 - 0
4 Start_Stop_Count -O--CK 100 100 020 - 80
5 Reallocated_Sector_Ct PO--CK 100 100 010 - 0
7 Seek_Error_Rate POSR-- 082 060 030 - 181785851
9 Power_On_Hours -O--CK 087 087 000 - 11874
10 Spin_Retry_Count PO--C- 100 100 097 - 0
12 Power_Cycle_Count -O--CK 100 100 020 - 65
184 End-to-End_Error -O--CK 100 100 099 - 0
187 Reported_Uncorrect -O--CK 100 100 000 - 0
188 Command_Timeout -O--CK 100 100 000 - 0
189 High_Fly_Writes -O-RCK 100 100 000 - 0
190 Airflow_Temperature_Cel -O---K 060 051 045 - 40 (Min/Max 37/40)
191 G-Sense_Error_Rate -O--CK 100 100 000 - 0
192 Power-Off_Retract_Count -O--CK 100 100 000 - 60
193 Load_Cycle_Count -O--CK 100 100 000 - 559
194 Temperature_Celsius -O---K 040 049 000 - 40 (0 21 0 0 0)
195 Hardware_ECC_Recovered -O-RC- 021 007 000 - 120486603
197 Current_Pending_Sector -O--C- 100 100 000 - 0
198 Offline_Uncorrectable ----C- 100 100 000 - 0
199 UDMA_CRC_Error_Count -OSRCK 200 200 000 - 0
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning
General Purpose Log Directory Version 1
SMART Log Directory Version 1 [multi-sector log support]
Address Access R/W Size Description
0x00 GPL,SL R/O 1 Log Directory
0x01 SL R/O 1 Summary SMART error log
0x02 SL R/O 5 Comprehensive SMART error log
0x03 GPL R/O 5 Ext. Comprehensive SMART error log
0x04 GPL,SL R/O 8 Device Statistics log
0x06 SL R/O 1 SMART self-test log
0x07 GPL R/O 1 Extended self-test log
0x08 GPL,SL R/O 2 Power Conditions log
0x09 SL R/W 1 Selective self-test log
0x10 GPL R/O 1 SATA NCQ Queued Error log
0x11 GPL R/O 1 SATA Phy Event Counters log
0x21 GPL R/O 1 Write stream error log
0x22 GPL R/O 1 Read stream error log
0x24 GPL R/O 512 Current Device Internal Status Data log
0x30 GPL,SL R/O 9 IDENTIFY DEVICE data log
0x80-0x9f GPL,SL R/W 16 Host vendor specific log
0xa1 GPL,SL VS 20 Device vendor specific log
0xa2 GPL VS 4496 Device vendor specific log
0xa8 GPL,SL VS 129 Device vendor specific log
0xa9 GPL,SL VS 1 Device vendor specific log
0xb0 GPL,SL VS 1 Device vendor specific log
0xbd GPL VS 512 Device vendor specific log
0xbe-0xbf GPL VS 65535 Device vendor specific log
0xc1 GPL,SL VS 10 Device vendor specific log
0xc2 GPL,SL VS 50 Device vendor specific log
0xc3 GPL,SL VS 8 Device vendor specific log
0xc4 GPL,SL VS 5 Device vendor specific log
0xd1 GPL,SL VS 8 Device vendor specific log
0xe0 GPL,SL R/W 1 SCT Command/Status
0xe1 GPL,SL R/W 1 SCT Data Transfer
SMART Extended Comprehensive Error Log Version: 1 (5 sectors)
No Errors Logged
SMART Extended Self-test Log Version: 1 (1 sectors)
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.
SCT Status Version: 3
SCT Version (vendor specific): 522 (0x020a)
SCT Support Level: 1
Device State: Active (0)
Current Temperature: 40 Celsius
Power Cycle Min/Max Temperature: 37/40 Celsius
Lifetime Min/Max Temperature: 21/49 Celsius
Under/Over Temperature Limit Count: 0/8
SCT Temperature History Version: 2
Temperature Sampling Period: 1 minute
Temperature Logging Interval: 10 minutes
Min/Max recommended Temperature: 0/ 0 Celsius
Min/Max Temperature Limit: 0/ 0 Celsius
Temperature History Size (Index): 128 (50)
[SNIP TEMPERATURE SECTION]
SCT Error Recovery Control:
Read: 75 (7.5 seconds)
Write: 75 (7.5 seconds)
Device Statistics (GP Log 0x04)
Page Offset Size Value Flags Description
0x01 ===== = = === == General Statistics (rev 2) ==
0x01 0x008 4 65 --- Lifetime Power-On Resets
0x01 0x010 4 11874 --- Power-on Hours
0x01 0x018 6 2728215464 --- Logical Sectors Written
0x01 0x020 6 60447755 --- Number of Write Commands
0x01 0x028 6 72441102919 --- Logical Sectors Read
0x01 0x030 6 47955151 --- Number of Read Commands
0x01 0x038 6 - --- Date and Time TimeStamp
0x03 ===== = = === == Rotating Media Statistics (rev 1) ==
0x03 0x008 4 11667 --- Spindle Motor Power-on Hours
0x03 0x010 4 437 --- Head Flying Hours
0x03 0x018 4 559 --- Head Load Events
0x03 0x020 4 0 --- Number of Reallocated Logical Sectors
0x03 0x028 4 0 --- Read Recovery Attempts
0x03 0x030 4 0 --- Number of Mechanical Start Failures
0x04 ===== = = === == General Errors Statistics (rev 1) ==
0x04 0x008 4 0 --- Number of Reported Uncorrectable Errors
0x04 0x010 4 0 --- Resets Between Cmd Acceptance and
Completion
0x05 ===== = = === == Temperature Statistics (rev 1) ==
0x05 0x008 1 40 N-- Current Temperature
0x05 0x010 1 38 N-- Average Short Term Temperature
0x05 0x018 1 38 N-- Average Long Term Temperature
0x05 0x020 1 49 N-- Highest Temperature
0x05 0x028 1 21 N-- Lowest Temperature
0x05 0x030 1 41 N-- Highest Average Short Term Temperature
0x05 0x038 1 2 N-- Lowest Average Short Term Temperature
0x05 0x040 1 39 N-- Highest Average Long Term Temperature
0x05 0x050 4 0 --- Time in Over-Temperature
0x05 0x058 1 55 --- Specified Maximum Operating Temperature
0x05 0x060 4 0 --- Time in Under-Temperature
0x05 0x068 1 13 --- Specified Minimum Operating Temperature
|||_ C monitored condition met
||__ D supports DSN
|___ N normalized value
SATA Phy Event Counters (GP Log 0x11)
ID Size Value Description
0x000a 2 3 Device-to-host register FISes sent due to a COMRESET
0x0001 2 0 Command failed due to ICRC error
0x0003 2 0 R_ERR response for device-to-host data FIS
0x0004 2 0 R_ERR response for host-to-device data FIS
0x0006 2 0 R_ERR response for device-to-host non-data FIS
0x0007 2 0 R_ERR response for host-to-device non-data FIS
/dev/sdb is similar:
=== START OF INFORMATION SECTION ===
Device Model: ST1000NM0033 81Y9807 81Y3867IBM
Serial Number: Z1W2ZKKD
LU WWN Device Id: 5 000c50 079c557df
Firmware Version: BB5A
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Mar 6 14:47:49 2017 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM feature is: Unavailable
Rd look-ahead is: Enabled
Write cache is: Enabled
ATA Security is: Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
1 Raw_Read_Error_Rate POSR-- 083 063 044 - 224696760
3 Spin_Up_Time PO---- 097 096 000 - 0
4 Start_Stop_Count -O--CK 100 100 020 - 80
5 Reallocated_Sector_Ct PO--CK 100 100 010 - 0
7 Seek_Error_Rate POSR-- 082 060 030 - 192122915
9 Power_On_Hours -O--CK 087 087 000 - 11874
10 Spin_Retry_Count PO--C- 100 100 097 - 0
12 Power_Cycle_Count -O--CK 100 100 020 - 66
184 End-to-End_Error -O--CK 100 100 099 - 0
187 Reported_Uncorrect -O--CK 100 100 000 - 0
188 Command_Timeout -O--CK 100 100 000 - 0
189 High_Fly_Writes -O-RCK 100 100 000 - 0
190 Airflow_Temperature_Cel -O---K 056 047 045 - 44 (Min/Max 41/44)
191 G-Sense_Error_Rate -O--CK 100 100 000 - 0
192 Power-Off_Retract_Count -O--CK 100 100 000 - 58
193 Load_Cycle_Count -O--CK 100 100 000 - 556
194 Temperature_Celsius -O---K 044 053 000 - 44 (0 21 0 0 0)
195 Hardware_ECC_Recovered -O-RC- 023 013 000 - 224696760
197 Current_Pending_Sector -O--C- 100 100 000 - 0
198 Offline_Uncorrectable ----C- 100 100 000 - 0
199 UDMA_CRC_Error_Count -OSRCK 200 200 000 - 0
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning
while /dev/sdc looks OK
=== START OF INFORMATION SECTION ===
Device Model: WD1003FBYX-23 81Y9807 81Y3867IBM
Serial Number: WD-WCAW37DULJLP
LU WWN Device Id: 5 0014ee 261450c09
Firmware Version: WB35
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 7200 rpm
Device is: Not in smartctl database [for details use: -P showall]
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: Mon Mar 6 14:48:21 2017 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM level is: 254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is: Enabled
ATA Security is: Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: Enabled
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
1 Raw_Read_Error_Rate POSR-K 200 200 051 - 3
3 Spin_Up_Time POS--K 186 173 021 - 3691
4 Start_Stop_Count -O--CK 100 100 000 - 90
5 Reallocated_Sector_Ct PO--CK 200 200 140 - 0
7 Seek_Error_Rate -OSR-K 100 253 000 - 0
9 Power_On_Hours -O--CK 084 084 000 - 11759
10 Spin_Retry_Count -O--CK 100 253 000 - 0
11 Calibration_Retry_Count -O--CK 100 253 000 - 0
12 Power_Cycle_Count -O--CK 100 100 000 - 76
192 Power-Off_Retract_Count -O--CK 200 200 000 - 69
193 Load_Cycle_Count -O--CK 200 200 000 - 20
194 Temperature_Celsius -O---K 102 092 000 - 45
196 Reallocated_Event_Count -O--CK 200 200 000 - 0
197 Current_Pending_Sector -O--CK 200 200 000 - 0
198 Offline_Uncorrectable ----CK 200 200 000 - 0
199 UDMA_CRC_Error_Count -O--CK 200 200 000 - 0
200 Multi_Zone_Error_Rate ---R-- 200 200 000 - 0
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning
Can anyone provide some hints or suggestions on how I should proceed?
Regards,
Adam
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