Re: sata_nv + ADMA + Samsung disk problem
From: Tejun Heo
Date: Tue Jan 01 2008 - 22:25:50 EST
[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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