From: Thomas Backlund Subject: Re: INFO: task jbd2/dm-0-8:3993 blocked for more than 120 seconds Date: Thu, 18 Aug 2011 00:08:53 +0300 Message-ID: <4E4C2DE5.5020100@mageia.org> References: <4E4BC296.1040004@mageia.org> <96850198-2253-40F7-B99C-62A6097278FA@dilger.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "linux-kernel@vger.kernel.org" , "linux-ext4@vger.kernel.org" To: Andreas Dilger Return-path: In-Reply-To: <96850198-2253-40F7-B99C-62A6097278FA@dilger.ca> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Andreas Dilger skrev 17.8.2011 17:35: > On 2011-08-17, at 7:31 AM, Thomas Backlund wrote: >> >> One of our buildnodes, a 8-core Supermicro X7DA8 system, >> and a WDC WD1002FAEX-0 sata disk hits the "blocked for more than 120 seconds" several times, and ends up resetting the ata bus. >> >> The disk does not report any errors with smart, and we have the same model in a 24-core Supermicro X8DTN, and it does not show this problem. >> >> ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen >> ata3.00: failed command: FLUSH CACHE EXT >> ata3.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 >> res 40/00:00:01:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) >> ata3.00: status: { DRDY } >> ata3: soft resetting link >> ata3.00: configured for UDMA/133 >> ata3.00: retrying FLUSH 0xea Emask 0x4 >> ata3: EH complete > > This is a problem with your disk hardware. > Are you sure? I get nothing from smart, even after I had executed the long test... # smartctl -a /dev/sda smartctl 5.39.1 2010-01-28 r3054 [x86_64-mandriva-linux-gnu] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: WDC WD1002FAEX-00Z3A0 Serial Number: WD-WCATR3168879 Firmware Version: 05.01D05 User Capacity: 1,000,204,886,016 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Wed Aug 17 23:07:52 2011 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: (0x85) Offline data collection activity was aborted by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 241) Self-test routine in progress... 10% of test remaining. Total time to complete Offline data collection: (17400) 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: ( 201) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x3037) SCT Status 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 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 186 174 021 Pre-fail Always - 3683 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 15 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 091 091 000 Old_age Always - 7113 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 13 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 11 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 3 194 Temperature_Celsius 0x0022 115 108 000 Old_age Always - 32 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 200 200 000 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 Short offline Completed without error 00% 7109 - # 2 Extended offline Completed without error 00% 7003 - # 3 Extended offline Completed without error 00% 6837 - # 4 Extended offline Completed without error 00% 6670 - # 5 Extended offline Completed without error 00% 6504 - # 6 Extended offline Completed without error 00% 6338 - # 7 Extended offline Completed without error 00% 6173 - # 8 Extended offline Completed without error 00% 6006 - # 9 Extended offline Completed without error 00% 5840 - #10 Extended offline Completed without error 00% 5674 - #11 Extended offline Completed without error 00% 5507 - #12 Extended offline Completed without error 00% 5340 - #13 Extended offline Completed without error 00% 5173 - #14 Extended offline Completed without error 00% 5007 - #15 Extended offline Completed without error 00% 4841 - #16 Extended offline Completed without error 00% 4675 - #17 Extended offline Completed without error 00% 4510 - #18 Extended offline Completed without error 00% 4344 - #19 Extended offline Completed without error 00% 4179 - #20 Extended offline Completed without error 00% 4012 - #21 Extended offline Completed without error 00% 3847 - 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. -- Thomas