我收到了一些来自mdadm的警报。 进一步检查似乎表明，一些硬盘可能会损坏。
你能确认吗？
有两个SCSI驱动器应该在RAID1中工作
This is an automatically generated mail message from mdadm running on host... A DegradedArray event had been detected on md device /dev/md0. Faithfully yours, etc. PS The /proc/mdstat file currently contains the following: Personalities : [raid1] md0 : active raid1 sda2[0](F) sdb2[1] 972597112 blocks super 1.2 [2/1] [_U] unused devices: 输出mdadm –detail / dev / md0
root@data:/# mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Fri Apr 12 06:43:28 2013 Raid Level : raid1 Array Size : 972597112 (927.54 GiB 995.94 GB) Used Dev Size : 972597112 (927.54 GiB 995.94 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Tue Jul 16 11:02:38 2013 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Name : grml:0 UUID : ac43ac06:67d7f5e8:147f9c57:f087c896 Events : 768474 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 18 1 active sync /dev/sdb2 0 8 2 - faulty spare /dev/sda2
我只是想添加，我在救援模式下启动它，这是我用smartctltesting得到的输出：
The authenticity of host '78.31.69.128 (78.31.69.128)' can't be established. RSA key fingerprint is 6b:10:c9:74:d5:50:4e:48:6f:e9:54:54:fd:b3:b4:82. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '78.31.69.128' (RSA) to the list of known hosts. [email protected]'s password: Grml - Linux for geeks root@grml ~ # parted -l Model: ATA Hitachi HUA72201 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 134kB 4000MB 4000MB primary linux-swap(v1) 2 4000MB 1000GB 996GB primary boot, raid Model: ATA Hitachi HUA72201 (scsi) Disk /dev/sdb: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 134kB 4000MB 4000MB primary 2 4000MB 1000GB 996GB primary boot, raid root@grml ~ # smartctl -s on -t short -a /dev/sda smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.7-1-grml-amd64] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Hitachi Ultrastar A7K2000 Device Model: Hitachi HUA722010CLA330 Serial Number: JPW9K0N01PS0SL LU WWN Device Id: 5 000cca 39ad7f9ba Firmware Version: JP4OA3MA User Capacity: 1.000.204.886.016 bytes [1,00 TB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 4 Local Time is: Tue Jul 16 15:42:09 2013 CEST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF ENABLE/DISABLE COMMANDS SECTION === SMART Enabled. === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: FAILED! Drive failure expected in less than 24 hours. SAVE ALL DATA. See vendor-specific Attribute list for failed Attributes. General SMART Values: Offline data collection status: (0x85) Offline data collection activity was aborted 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: ( 9572) 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: ( 1) minutes. Extended self-test routine recommended polling time: ( 160) minutes. SCT capabilities: (0x003d) 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 0x000b 096 096 016 Pre-fail Always - 524288 2 Throughput_Performance 0x0005 137 137 054 Pre-fail Offline - 90 3 Spin_Up_Time 0x0007 128 128 024 Pre-fail Always - 294 (Average 296) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 70 5 Reallocated_Sector_Ct 0x0033 001 001 005 Pre-fail Always FAILING_NOW 2015 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 144 144 020 Pre-fail Offline - 28 9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 6009 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 70 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 82 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 82 194 Temperature_Celsius 0x0002 142 142 000 Old_age Always - 42 (Min/Max 15/52) 196 Reallocated_Event_Count 0x0032 001 001 000 Old_age Always - 2033 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0 SMART Error Log Version: 1 ATA Error Count: 326 (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 326 occurred at disk power-on lifetime: 4758 hours (198 days + 6 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 dc 64 87 3e 00 Error: UNC at LBA = 0x003e8764 = 4097892 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 18 08 40 88 3e 40 08 16d+23:38:55.512 READ FPDMA QUEUED 60 f8 00 48 87 3e 40 08 16d+23:38:55.511 READ FPDMA QUEUED 61 02 00 08 38 77 40 08 16d+23:38:50.104 WRITE FPDMA QUEUED 61 20 00 90 45 bc 40 08 16d+23:38:48.761 WRITE FPDMA QUEUED 61 02 00 08 38 77 40 08 16d+23:38:48.694 WRITE FPDMA QUEUED Error 325 occurred at disk power-on lifetime: 3541 hours (147 days + 13 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 03 85 01 fb 09 Error: UNC at LBA = 0x09fb0185 = 167444869 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 08 00 80 01 fb 40 08 5d+19:53:07.617 READ FPDMA QUEUED ef 10 02 00 00 00 a0 08 5d+19:53:07.616 SET FEATURES [Reserved for Serial ATA] 27 00 00 00 00 00 e0 08 5d+19:53:07.615 READ NATIVE MAX ADDRESS EXT ec 00 00 00 00 00 a0 08 5d+19:53:07.609 IDENTIFY DEVICE ef 03 46 00 00 00 a0 08 5d+19:53:07.608 SET FEATURES [Set transfer mode] Error 324 occurred at disk power-on lifetime: 3541 hours (147 days + 13 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 03 85 01 fb 09 Error: UNC at LBA = 0x09fb0185 = 167444869 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 08 00 80 01 fb 40 08 5d+19:52:49.411 READ FPDMA QUEUED ef 10 02 00 00 00 a0 08 5d+19:52:49.410 SET FEATURES [Reserved for Serial ATA] 27 00 00 00 00 00 e0 08 5d+19:52:49.409 READ NATIVE MAX ADDRESS EXT ec 00 00 00 00 00 a0 08 5d+19:52:49.403 IDENTIFY DEVICE ef 03 46 00 00 00 a0 08 5d+19:52:49.402 SET FEATURES [Set transfer mode] Error 323 occurred at disk power-on lifetime: 3541 hours (147 days + 13 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 03 85 01 fb 09 Error: UNC at LBA = 0x09fb0185 = 167444869 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 08 00 80 01 fb 40 08 5d+19:52:31.204 READ FPDMA QUEUED ef 10 02 00 00 00 a0 08 5d+19:52:31.203 SET FEATURES [Reserved for Serial ATA] 27 00 00 00 00 00 e0 08 5d+19:52:31.202 READ NATIVE MAX ADDRESS EXT ec 00 00 00 00 00 a0 08 5d+19:52:31.196 IDENTIFY DEVICE ef 03 46 00 00 00 a0 08 5d+19:52:31.195 SET FEATURES [Set transfer mode] Error 322 occurred at disk power-on lifetime: 3541 hours (147 days + 13 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 03 85 01 fb 09 Error: UNC at LBA = 0x09fb0185 = 167444869 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 08 00 80 01 fb 40 08 5d+19:52:12.792 READ FPDMA QUEUED ef 10 02 00 00 00 a0 08 5d+19:52:12.791 SET FEATURES [Reserved for Serial ATA] 27 00 00 00 00 00 e0 08 5d+19:52:12.790 READ NATIVE MAX ADDRESS EXT ec 00 00 00 00 00 a0 08 5d+19:52:12.784 IDENTIFY DEVICE ef 03 46 00 00 00 a0 08 5d+19:52:12.783 SET FEATURES [Set transfer mode] SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 6009 - # 2 Extended offline Completed: read failure 90% 3370 161277656 # 3 Short offline Completed without error 00% 3369 - 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. === START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION === Sending command: "Execute SMART Short self-test routine immediately in off-line mode". Drive command "Execute SMART Short self-test routine immediately in off-line mode" successful. Testing has begun. Please wait 1 minutes for test to complete. Test will complete after Tue Jul 16 15:43:11 2013 Use smartctl -X to abort test. 216 root@grml ~ # ls -la :( total 43 drwxr-xr-x 7 root root 120 Jul 16 15:42 ./ drwxr-xr-x 32 root root 240 Jul 16 13:35 ../ drwx------ 3 root root 25 Mai 3 14:24 .cache/ drwx------ 4 root root 60 Jul 16 13:35 .config/ drwxr-xr-x 2 root root 60 Jul 16 15:35 .kbd/ drwx------ 3 root root 28 Mai 3 14:24 .local/ -rw------- 1 root root 748 Mai 3 14:27 .viminfo -rw-r--r-- 1 root root 33992 Mai 3 14:18 .zcompdump -rw-r--r-- 1 root root 8 Jul 16 15:41 .zdirs -rw------- 1 root root 531 Jul 16 15:42 .zsh_history root@grml ~ # smartctl -s on -t short -a /dev/sdb smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.7-1-grml-amd64] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Hitachi Ultrastar A7K2000 Device Model: Hitachi HUA722010CLA330 Serial Number: JPW9K0N01JNXSL LU WWN Device Id: 5 000cca 39ad5ac00 Firmware Version: JP4OA3MA User Capacity: 1.000.204.886.016 bytes [1,00 TB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 4 Local Time is: Tue Jul 16 15:43:39 2013 CEST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF ENABLE/DISABLE COMMANDS SECTION === SMART Enabled. === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x85) Offline data collection activity was aborted 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: ( 9753) 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: ( 1) minutes. Extended self-test routine recommended polling time: ( 163) minutes. SCT capabilities: (0x003d) 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 0x000b 100 100 016 Pre-fail Always - 0 2 Throughput_Performance 0x0005 136 136 054 Pre-fail Offline - 93 3 Spin_Up_Time 0x0007 128 128 024 Pre-fail Always - 295 (Average 295) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 70 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 140 140 020 Pre-fail Offline - 30 9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 6011 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 70 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 80 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 80 194 Temperature_Celsius 0x0002 150 150 000 Old_age Always - 40 (Min/Max 14/49) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0 SMART Error Log Version: 0 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 6010 - # 2 Extended offline Completed without error 00% 3373 - 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. === START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION === Sending command: "Execute SMART Short self-test routine immediately in off-line mode". Drive command "Execute SMART Short self-test routine immediately in off-line mode" successful. Testing has begun. Please wait 1 minutes for test to complete. Test will complete after Tue Jul 16 15:44:41 2013 Use smartctl -X to abort test. root@grml ~ #
您有两个分区（sda2和sdb2formsmd0）的镜像（RAID1）。
Sda2失败。
数组大小和使用的开发大小似乎相同或至less非常接近，这意味着它可能是第一个，它是安全的更换。
如果你觉得不舒服，那么先做一个备份（并testing备份）。
SCSI通常是热插拔的，但是请检查一下（例如，机器是否使用带有80针SCSI连接器的SCSI，或者这是一个带有molex连接器和50/68针数据的homebrewn设置，在后一种情况下，更换驱动器可能会更安全。
是的，你有一个失败的驱动器。 代替它。 看起来像sda2是罪魁祸首。