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Při úklidu na Utažské univerzitě se ve skladovacích prostorách náhodou podařilo nalézt magnetickou pásku s kopií Unixu V4. Páska byla zaslána do počítačového muzea, kde se z pásky úspěšně podařilo extrahovat data a Unix spustit. Je to patrně jediný známý dochovaný exemplář tohoto 52 let starého Unixu, prvního vůbec programovaného v jazyce C.
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K dispozici je nový CLI nástroj witr sloužící k analýze běžících procesů. Název je zkratkou slov why-is-this-running, 'proč tohle běží'. Klade si za cíl v 'jediném, lidsky čitelném, výstupu vysvětlit odkud daný spuštěný proces pochází, jak byl spuštěn a jaký řetězec systémů je zodpovědný za to, že tento proces právě teď běží'. Witr je napsán v jazyce Go.
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[1828450.256212] ata1.00: exception Emask 0x0 SAct 0x60000000 SErr 0x0 action 0x6 frozen
[1828450.256415] ata1.00: failed command: WRITE FPDMA QUEUED
[1828450.256596] ata1.00: cmd 61/08:e8:78:95:a5/00:00:1d:00:00/40 tag 29 ncq 4096 out
res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[1828450.256975] ata1.00: status: { DRDY }
[1828450.257167] ata1.00: failed command: WRITE FPDMA QUEUED
[1828450.257345] ata1.00: cmd 61/08:f0:10:96:a5/00:00:1d:00:00/40 tag 30 ncq 4096 out
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[1828450.257740] ata1.00: status: { DRDY }
[1828450.257948] ata1: hard resetting link
[1828450.562264] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[1828450.563033] ata1.00: configured for UDMA/133
[1828450.573211] ata1.00: device reported invalid CHS sector 0
[1828450.573218] ata1: EH complete
[1828450.589240] ata1.00: Enabling discard_zeroes_data
Jedná se o známku odcházení disku? Smartctl mi píše toto:
smartctl -H /dev/sda smartctl 6.2 2017-02-27 r4394 [x86_64-linux-3.10.0-693.11.6.el7.x86_64] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED smartctl -H /dev/sdb smartctl 6.2 2017-02-27 r4394 [x86_64-linux-3.10.0-693.11.6.el7.x86_64] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED
smartctl -a /dev/sdaZdar Max
14.2.2018 11:12
smartctl 6.2 2017-02-27 r4394 [x86_64-linux-3.10.0-693.11.6.el7.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: INTEL SSDSC2BB800G7
Serial Number: PHDV634601BK800CGN
LU WWN Device Id: 5 5cd2e4 14d46c9bc
Firmware Version: N2010101
User Capacity: 800,166,076,416 bytes [800 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-3 (unknown minor revision code: 0x006d)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Wed Feb 14 11:25:34 2018 CET
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: ( 0) seconds.
Offline data collection
capabilities: (0x79) SMART execute Offline immediate.
No Auto Offline data collection 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: ( 2) minutes.
Conveyance self-test routine
recommended polling time: ( 2) 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: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0032 100 100 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 10869
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 5
170 Unknown_Attribute 0x0033 100 100 010 Pre-fail Always - 0
171 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
172 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
174 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 3
175 Program_Fail_Count_Chip 0x0033 100 100 010 Pre-fail Always - 301109950618
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0033 100 100 090 Pre-fail Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 076 075 000 Old_age Always - 24 (Min/Max 17/32)
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 3
194 Temperature_Celsius 0x0022 100 100 000 Old_age Always - 24
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
199 UDMA_CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0
225 Unknown_SSD_Attribute 0x0032 100 100 000 Old_age Always - 851673
226 Unknown_SSD_Attribute 0x0032 100 100 000 Old_age Always - 1372
227 Unknown_SSD_Attribute 0x0032 100 100 000 Old_age Always - 66
228 Power-off_Retract_Count 0x0032 100 100 000 Old_age Always - 652159
232 Available_Reservd_Space 0x0033 100 100 010 Pre-fail Always - 0
233 Media_Wearout_Indicator 0x0032 099 099 000 Old_age Always - 0
234 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
241 Total_LBAs_Written 0x0032 100 100 000 Old_age Always - 851673
242 Total_LBAs_Read 0x0032 100 100 000 Old_age Always - 1683094
243 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 1932092
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.
smartctl 6.2 2017-02-27 r4394 [x86_64-linux-3.10.0-693.11.6.el7.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: INTEL SSDSC2BB800G7
Serial Number: PHDV6346018U800CGN
LU WWN Device Id: 5 5cd2e4 14d46c970
Firmware Version: N2010101
User Capacity: 800,166,076,416 bytes [800 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-3 (unknown minor revision code: 0x006d)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Wed Feb 14 11:25:37 2018 CET
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: ( 0) seconds.
Offline data collection
capabilities: (0x79) SMART execute Offline immediate.
No Auto Offline data collection 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: ( 2) minutes.
Conveyance self-test routine
recommended polling time: ( 2) 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: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0032 100 100 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 10869
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 5
170 Unknown_Attribute 0x0033 100 100 010 Pre-fail Always - 0
171 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
172 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
174 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 3
175 Program_Fail_Count_Chip 0x0033 100 100 010 Pre-fail Always - 301109230002
183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0033 100 100 090 Pre-fail Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 076 069 000 Old_age Always - 24 (Min/Max 19/33)
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 3
194 Temperature_Celsius 0x0022 100 100 000 Old_age Always - 24
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
199 UDMA_CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0
225 Unknown_SSD_Attribute 0x0032 100 100 000 Old_age Always - 877404
226 Unknown_SSD_Attribute 0x0032 100 100 000 Old_age Always - 1597
227 Unknown_SSD_Attribute 0x0032 100 100 000 Old_age Always - 64
228 Power-off_Retract_Count 0x0032 100 100 000 Old_age Always - 652148
232 Available_Reservd_Space 0x0033 100 100 010 Pre-fail Always - 0
233 Media_Wearout_Indicator 0x0032 099 099 000 Old_age Always - 0
234 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0
241 Total_LBAs_Written 0x0032 100 100 000 Old_age Always - 877404
242 Total_LBAs_Read 0x0032 100 100 000 Old_age Always - 1593828
243 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 2243186
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.
Tiskni
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