とりあえず，TLで話題になってたので．
一言で言うと，温度表示が0の場合もあれば，フィールド自体が無かったりするので危険．
毎朝，HDDの温度をメールするようなスクリプトを組んでるんだけど，接続の構成が変わった時，SSDにも温度取得を試みるようになって，0℃を返してくれるやつは報告する温度が異常になるだけだけど，フィールドがないやつでエラーになってて，焦ったことがある．
温度のフィールドが存在しないこともある前提でスクリプトを組まないとだめらしい．こういうの規格とかあるのかな？
Crucial C300
$ sudo /usr/local/sbin/smartctl -a /dev/ada1 smartctl 5.40 2010-10-16 r3189 [FreeBSD 9.0-CURRENT amd64] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: C300-CTFDDAC128MAG Serial Number: 00000000103102FC610B Firmware Version: 0002 User Capacity: 128,035,676,160 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 6 Local Time is: Wed May 4 18:54:02 2011 JST 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: (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: ( 595) 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: ( 2) minutes. Extended self-test routine recommended polling time: ( 9) minutes. Conveyance self-test routine recommended polling time: ( 3) 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 0x002f 100 100 000 Pre-fail Always - 0 5 Reallocated_Sector_Ct 0x0033 100 100 000 Pre-fail Always - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 4224 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 13 170 Unknown_Attribute 0x0033 100 100 000 Pre-fail Always - 8819 171 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0 172 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0 173 Unknown_Attribute 0x0033 100 100 000 Pre-fail Always - 48 174 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0 181 Program_Fail_Cnt_Total 0x0022 100 100 000 Old_age Always - 7907034792506 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0033 100 100 000 Pre-fail Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 189 High_Fly_Writes 0x000e 100 100 000 Old_age Always - 204 195 Hardware_ECC_Recovered 0x003a 100 100 000 Old_age Always - 0 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 100 100 000 Old_age Always - 0 202 Data_Address_Mark_Errs 0x0018 100 100 000 Old_age Offline - 0 206 Flying_Height 0x000e 100 100 000 Old_age Always - 0 SMART Error Log Version: 1 No Errors Logged 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.
ADATA SSD 300（悪名高いJM族の廉価版SSD）
$ sudo /usr/local/sbin/smartctl -a /dev/ada0 smartctl 5.40 2010-10-16 r3189 [FreeBSD 9.0-CURRENT amd64] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: A-DATA SSD 300 Series Serial Number: AD_0123456866 Firmware Version: 080826 User Capacity: 32,044,482,560 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 7 ATA Standard is: ATA/ATAPI-7 T13 1532D revision 4a Local Time is: Wed May 4 18:56:40 2011 JST 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Total time to complete Offline data collection: ( 0) seconds. Offline data collection capabilities: (0x00) Offline data collection not supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x00) Error logging NOT supported. No General Purpose Logging support. SMART Attributes Data Structure revision number: 1280 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 1474 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 0 194 Temperature_Celsius 0x0007 032 100 000 Pre-fail Always - 0 229 Unknown_Attribute 0x0002 100 000 000 Old_age Always - 259986015180268 232 Available_Reservd_Space 0x0002 100 048 000 Old_age Always - 9037419786552 233 Media_Wearout_Indicator 0x0002 100 000 000 Old_age Always - 0 234 Unknown_Attribute 0x0002 100 000 000 Old_age Always - 554201789961 235 Unknown_Attribute 0x0002 100 000 000 Old_age Always - 134407199 Warning: device does not support Error Logging (pass0:ahcich0:0:0:0): SMART. ACB: b0 d5 01 4f c2 40 00 00 00 00 01 00 (pass0:ahcich0:0:0:0): CAM status: ATA Status Error (pass0:ahcich0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT ) (pass0:ahcich0:0:0:0): RES: 51 04 01 4f c2 40 00 00 00 01 00 Error SMART Error Log Read failed Smartctl: SMART Error Log Read Failed Warning: device does not support Self Test Logging (pass0:ahcich0:0:0:0): SMART. ACB: b0 d5 06 4f c2 40 00 00 00 00 01 00 (pass0:ahcich0:0:0:0): CAM status: ATA Status Error (pass0:ahcich0:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT ) (pass0:ahcich0:0:0:0): RES: 51 04 06 4f c2 40 00 00 00 01 00 Error SMART Error Self-Test Log Read failed Smartctl: SMART Self Test Log Read Failed Device does not support Selective Self Tests/Logging
