[cc'ing Robert Hancock and NVidia people] Whole thread can be read from the following URL. http://thread.gmane.org/gmane.linux.ide/21710 In a nutshell, with ADMA enabled, FLUSH_EXT occasionally times out. I first suspected faulty disk (reallocation failure on flush) but SMART reports nothing suspicious and w/ ADMA disabled, the drive works just fine. On a side note, on 2.6.22.1, SMART fails from time to time but the problem went away on 2.6.24-rc6. This was apparently fixed during that period. I guess we can ignore this for now. Thanks. Gabor Gombas wrote: > Hi, > > Just FYI I've tried to enable ADMA again (now running 2.6.24-rc6) but > the bug is still present: > > Jan 1 16:11:21 host kernel: ata7: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0x1501000 status 0x400 next cpb count 0x0 next cpb idx 0x0 > Jan 1 16:11:21 host kernel: ata7: CPB 0: ctl_flags 0x9, resp_flags 0x0 > Jan 1 16:11:21 host kernel: ata7: timeout waiting for ADMA IDLE, stat=0x400 > Jan 1 16:11:21 host kernel: ata7: timeout waiting for ADMA LEGACY, stat=0x400 > Jan 1 16:11:21 host kernel: ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen > Jan 1 16:11:21 host kernel: ata7.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 > Jan 1 16:11:21 host kernel: res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) > Jan 1 16:11:21 host kernel: ata7.00: status: { DRDY } > Jan 1 16:11:21 host kernel: ata7: soft resetting link > Jan 1 16:11:22 host kernel: ata7: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > Jan 1 16:11:22 host kernel: ata7.00: configured for UDMA/133 > Jan 1 16:11:22 host kernel: ata7: EH complete > Jan 1 16:11:22 host kernel: sd 6:0:0:0: [sdc] 488397168 512-byte hardware sectors (250059 MB) > Jan 1 16:11:22 host kernel: sd 6:0:0:0: [sdc] Write Protect is off > Jan 1 16:11:22 host kernel: sd 6:0:0:0: [sdc] Mode Sense: 00 3a 00 00 > Jan 1 16:11:22 host kernel: sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA > > Although this time the above happened more than 3 hours after boot > which is much better than 2.6.22 was. In the past ~4 months ADMA was > disabled and I never had any libata-related error messages. > > SMART does not show anything interesting: > > smartctl version 5.37 [x86_64-unknown-linux-gnu] Copyright (C) 2002-6 Bruce Allen > Home page is http://smartmontools.sourceforge.net/ > > === START OF INFORMATION SECTION === > Model Family: SAMSUNG SpinPoint P120 series > Device Model: SAMSUNG SP2504C > Serial Number: XXXXXXXXXXXXXX > Firmware Version: VT100-33 > User Capacity: 250,059,350,016 bytes > Device is: In smartctl database [for details use: -P show] > ATA Version is: 7 > ATA Standard is: ATA/ATAPI-7 T13 1532D revision 4a > Local Time is: Tue Jan 1 17:38:21 2008 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: (0x82) Offline data collection activity > was completed without error. > 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: (4867) 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: ( 81) minutes. > > 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 100 100 051 Pre-fail Always - 0 > 3 Spin_Up_Time 0x0007 100 100 025 Pre-fail Always - 6144 > 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1218 > 5 Reallocated_Sector_Ct 0x0033 253 253 010 Pre-fail Always - 0 > 7 Seek_Error_Rate 0x000f 253 253 051 Pre-fail Always - 0 > 8 Seek_Time_Performance 0x0025 253 253 015 Pre-fail Offline - 11363 > 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 3325 > 10 Spin_Retry_Count 0x0033 253 253 051 Pre-fail Always - 0 > 11 Calibration_Retry_Count 0x0012 253 002 000 Old_age Always - 0 > 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 985 > 190 Temperature_Celsius 0x0022 160 124 000 Old_age Always - 26 > 194 Temperature_Celsius 0x0022 160 124 000 Old_age Always - 26 > 195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 4346055 > 196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0 > 197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0 > 198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0 > 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 > 200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always - 0 > 201 Soft_Read_Error_Rate 0x000a 253 100 000 Old_age Always - 0 > 202 TA_Increase_Count 0x0032 253 253 000 Old_age Always - 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% 3315 - > # 2 Short offline Completed without error 00% 3298 - > # 3 Short offline Completed without error 00% 3268 - > # 4 Extended offline Completed without error 00% 3262 - > # 5 Short offline Completed without error 00% 3243 - > # 6 Short offline Completed without error 00% 3236 - > # 7 Short offline Completed without error 00% 3228 - > # 8 Extended offline Completed without error 00% 3218 - > # 9 Short offline Completed without error 00% 3186 - > #10 Short offline Completed without error 00% 3178 - > #11 Short offline Completed without error 00% 3175 - > #12 Short offline Completed without error 00% 3165 - > #13 Short offline Completed without error 00% 3155 - > #14 Short offline Completed without error 00% 3146 - > #15 Short offline Completed without error 00% 3139 - > #16 Extended offline Completed without error 00% 3135 - > #17 Short offline Completed without error 00% 3125 - > #18 Extended offline Completed without error 00% 3082 - > #19 Short offline Completed without error 00% 3068 - > #20 Short offline Completed without error 00% 3066 - > #21 Short offline Completed without error 00% 3052 - > > SMART Selective Self-Test Log Data Structure Revision Number (0) should be 1 > SMART Selective self-test log data structure revision number 0 > Warning: ATA Specification requires 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. > > Gabor > -- tejun - 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