Since more than a year ago I'm occasionally plagued by a hanging *buntu. Everytime this has happened the problem could be related to "FPDMA QUEUED" errors in the kernel log. Like in this bug report https://bugs.launchpad.net/ubuntu/+s...ux/+bug/550559 As this problem is really really annoying (makes your computer unreliable) I want to take a better look and determine if its the drive or just a linux kernel thing.
I have run multiple SMART tests the past year and everytime the disk passed the test. The resent extended (more than 2 hours) test does present read errors but no pending sectors. Also the test could be completed. Furthermore I booted the Ultimate Boot CD and the Western Digital diagnostics tool found no errors on a full scan.
Another weird thing is Windows in this regard. I have had Vista running on this machine for 2 years without any apparent HDD errors (at least no 'show stoppers' for the OS). Presently I have a Windows 7 / Kubuntu dual boot and again never a sign of hard drive trouble in W7.
This is (hard) driving me insane, can anyone shed a light on this situation, what should I do?
Below I have provided some relevant lines from /var/log/kern.log and the results from a SMART test performed today.
This is one of the caught situations where my *buntu install hangs:
Here are the results fromCode:Sep 30 17:30:33 mycomputer kernel: [31175.824062] ata1.00: exception Emask 0x0 SAct 0x7 SErr 0x0 action 0x6 frozen Sep 30 17:30:33 mycomputer kernel: [31175.824074] ata1.00: failed command: READ FPDMA QUEUED Sep 30 17:30:33 mycomputer kernel: [31175.824086] ata1.00: cmd 60/40:00:00:15:7e/00:00:38:00:00/40 tag 0 ncq 32768 in Sep 30 17:30:33 mycomputer kernel: [31175.824089] res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) Sep 30 17:30:33 mycomputer kernel: [31175.824095] ata1.00: status: { DRDY } Sep 30 17:30:33 mycomputer kernel: [31175.824100] ata1.00: failed command: WRITE FPDMA QUEUED Sep 30 17:30:33 mycomputer kernel: [31175.824110] ata1.00: cmd 61/20:08:18:30:f9/00:00:34:00:00/40 tag 1 ncq 16384 out Sep 30 17:30:33 mycomputer kernel: [31175.824113] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) Sep 30 17:30:33 mycomputer kernel: [31175.824119] ata1.00: status: { DRDY } Sep 30 17:30:33 mycomputer kernel: [31175.824124] ata1.00: failed command: WRITE FPDMA QUEUED Sep 30 17:30:33 mycomputer kernel: [31175.824133] ata1.00: cmd 61/18:10:20:1b:0b/00:00:32:00:00/40 tag 2 ncq 12288 out Sep 30 17:30:33 mycomputer kernel: [31175.824136] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) Sep 30 17:30:33 mycomputer kernel: [31175.824140] ata1.00: status: { DRDY } Sep 30 17:30:33 mycomputer kernel: [31175.824149] ata1: hard resetting link Sep 30 17:30:34 mycomputer kernel: [31176.316050] ata1: softreset failed (device not ready) Sep 30 17:30:34 mycomputer kernel: [31176.316059] ata1: applying PMP SRST workaround and retrying Sep 30 17:30:34 mycomputer kernel: [31176.488053] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Sep 30 17:30:34 mycomputer kernel: [31176.511416] ata1.00: configured for UDMA/133 Sep 30 17:30:34 mycomputer kernel: [31176.524026] ata1.00: device reported invalid CHS sector 0 Sep 30 17:30:34 mycomputer kernel: [31176.524033] ata1.00: device reported invalid CHS sector 0 Sep 30 17:30:34 mycomputer kernel: [31176.524038] ata1.00: device reported invalid CHS sector 0 Sep 30 17:30:34 mycomputer kernel: [31176.524052] ata1: EH complete Sep 30 17:31:04 mycomputer kernel: [31206.880065] ata1.00: exception Emask 0x0 SAct 0x4 SErr 0x0 action 0x6 frozen Sep 30 17:31:04 mycomputer kernel: [31206.880185] ata1.00: failed command: READ FPDMA QUEUED Sep 30 17:31:04 mycomputer kernel: [31206.880267] ata1.00: cmd 60/40:10:00:15:7e/00:00:38:00:00/40 tag 2 ncq 32768 in Sep 30 17:31:04 mycomputer kernel: [31206.880269] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) Sep 30 17:31:04 mycomputer kernel: [31206.880460] ata1.00: status: { DRDY } Sep 30 17:31:04 mycomputer kernel: [31206.880520] ata1: hard resetting link Sep 30 17:31:05 mycomputer kernel: [31207.372037] ata1: softreset failed (device not ready) Sep 30 17:31:05 mycomputer kernel: [31207.372135] ata1: applying PMP SRST workaround and retrying Sep 30 17:31:05 mycomputer kernel: [31207.544059] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Sep 30 17:31:05 mycomputer kernel: [31207.574052] ata1.00: configured for UDMA/133 Sep 30 17:31:05 mycomputer kernel: [31207.588038] ata1.00: device reported invalid CHS sector 0 Sep 30 17:31:05 mycomputer kernel: [31207.588053] ata1: EH complete Sep 30 17:31:35 mycomputer kernel: [31237.856070] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x6 frozen Sep 30 17:31:35 mycomputer kernel: [31237.856191] ata1.00Sep 30 20:57:34 mycomputer kernel: imklog 5.8.6, log source = /proc/kmsg started.
after an extended selftest:Code:sudo smartctl -a /dev/sda
Code:smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-31-generic] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Green Device Model: WDC WD5000AACS-00ZUB0 Serial Number: WD-WCASU2847586 LU WWN Device Id: 5 0014ee 2014e7ec9 Firmware Version: 01.01B01 User Capacity: 500,107,862,016 bytes [500 GB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Sat Oct 6 14:59:14 2012 CEST 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: (0x84) Offline data collection activity was suspended 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: (13980) 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: ( 163) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x303f) 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 0x000f 198 197 051 Pre-fail Always - 31671 3 Spin_Up_Time 0x0003 167 161 021 Pre-fail Always - 4633 4 Start_Stop_Count 0x0032 097 097 000 Old_age Always - 3304 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x000e 200 200 051 Old_age Always - 0 9 Power_On_Hours 0x0032 079 079 000 Old_age Always - 15556 10 Spin_Retry_Count 0x0012 100 100 051 Old_age Always - 0 11 Calibration_Retry_Count 0x0012 100 100 051 Old_age Always - 0 12 Power_Cycle_Count 0x0032 097 097 000 Old_age Always - 3300 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 134 193 Load_Cycle_Count 0x0032 016 016 000 Old_age Always - 552064 194 Temperature_Celsius 0x0022 112 100 000 Old_age Always - 35 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 199 000 Old_age Always - 33 200 Multi_Zone_Error_Rate 0x0008 200 200 051 Old_age Offline - 0 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 without error 00% 15555 - # 2 Extended offline Completed without error 00% 15455 - # 3 Short offline Completed without error 00% 15452 - # 4 Conveyance offline Completed without error 00% 15439 - # 5 Extended offline Completed without error 00% 15255 - # 6 Short offline Completed without error 00% 15247 - # 7 Short offline Completed without error 00% 14841 - # 8 Extended offline Completed without error 00% 12729 - # 9 Short offline Completed without error 00% 12649 - #10 Extended offline Completed without error 00% 12266 - #11 Short offline Completed without error 00% 12264 - #12 Short offline Aborted by host 10% 12263 - #13 Conveyance offline Completed without error 00% 11071 - #14 Extended offline Completed without error 00% 11070 - #15 Short offline Completed without error 00% 11016 - 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.
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