Estou tentando criar um servidor de backup remoto, por isso instalei o smartmontools para monitorar meu disco externo de 1TB do Samsung M3 (USB3).
Eu fiz um autoteste nele e ele retornou um erro de leitura:
5 Reallocated_Sector_Ct 0x0033 252 252 010 Pre-fail Always - 0
...
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 1
198 Offline_Uncorrectable 0x0030 252 252 000 Old_age Offline - 0
SMART Extended Self-test Log Version: 1 (2 sectors)
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed: read failure 10% 956 1953524376
Depois disso, tentei seguir o tutorial HOWTO de blocos ruins para smartmontools .
Eu tentei determinar em qual partição é o erro quando percebi que, de acordo com fdisk -l , eu não tenho o setor 19535 2 4376, apenas 19535 0 4688.
Disk /dev/sda: 931.5 GiB, 1000194400256 bytes, 1953504688 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 13771C11-8744-B04F-AF61-FA42552D12A6
Device Start End Sectors Size Type
/dev/sda1 2048 1953486847 1953484800 931.5G Solaris /usr & Apple ZFS
/dev/sda9 1953486848 1953503231 16384 8M Solaris reserved 1
Isso também foi confirmado por dd quando tentei substituir o setor:
dd if=/dev/sda bs=512 count=1 skip=1953524376
dd: /dev/sda: cannot skip: Invalid argument
0+0 records in
0+0 records out
0 bytes copied, 0.000439632 s, 0.0 kB/s
Alguém pode me explicar como posso forçar a transferência para esse setor?
Eu estava pensando em reescrever todo o disco com zeros com dd , mas não vejo nenhum motivo por trás disso, se ele não puder gravar no setor defeituoso.
Enquanto escrevia isto, notei também que smartctl reporta mal o meu modelo de disco, dispositivo e número de série. De acordo com o adesivo, eu tenho um
Samsung M3 Portable 1TB
Model: HX-M101TCB/G
Serial: E2FWJJHDA226A9
Poderia ser esse o motivo pelo qual o teste encontrou algo "impossível"?
Aqui está minha saída smartctl -a completa:
smartctl 6.5 2016-05-07 r4318 [armv7l-linux-4.9.28-2-ARCH] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Seagate Samsung SpinPoint M8U (USB)
Device Model: ST1000LM025 HN-M101ABB
Serial Number: E1653G14AB6A7P
LU WWN Device Id: 0 000000 000000000
Firmware Version: 2AR10001
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 6
SATA Version is: SATA 3.0, 3.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Tue May 30 00:55:00 2017 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART Status not supported: Incomplete response, ATA output registers missing
SMART overall-health self-assessment test result: PASSED
Warning: This result is based on an Attribute check.
General SMART Values:
Offline data collection status: (0x83) Offline data collection activity
is in a Reserved state.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 113) The previous self-test completed having
the read element of the test failed.
Total time to complete Offline
data collection: (13140) 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.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 219) minutes.
SCT capabilities: (0x003f) 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 0x002f 100 100 051 Pre-fail Always - 3
2 Throughput_Performance 0x0026 252 252 000 Old_age Always - 0
3 Spin_Up_Time 0x0023 086 086 025 Pre-fail Always - 4467
4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1898
5 Reallocated_Sector_Ct 0x0033 252 252 010 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 252 252 051 Old_age Always - 0
8 Seek_Time_Performance 0x0024 252 252 015 Old_age Offline - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 956
10 Spin_Retry_Count 0x0032 252 252 051 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 4
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 952
191 G-Sense_Error_Rate 0x0022 100 100 000 Old_age Always - 9
192 Power-Off_Retract_Count 0x0022 252 252 000 Old_age Always - 0
194 Temperature_Celsius 0x0002 055 049 000 Old_age Always - 45 (Min/Max 27/52)
195 Hardware_ECC_Recovered 0x003a 100 100 000 Old_age Always - 0
196 Reallocated_Event_Count 0x0032 252 252 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 1
198 Offline_Uncorrectable 0x0030 252 252 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0036 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x002a 100 100 000 Old_age Always - 545
223 Load_Retry_Count 0x0032 100 100 000 Old_age Always - 4
225 Load_Cycle_Count 0x0032 098 098 000 Old_age Always - 27934
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 Extended offline Completed: read failure 10% 956 1953524376
# 2 Short offline Completed: read failure 70% 952 1953524376
SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever been run
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Completed_read_failure [10% left] (0-65535)
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.
Que mais diagnósticos devo fazer? Posso usar essa unidade de maneira confiável? Se sim, que precauções devo observar, e / ou que medidas corretivas devo tomar?