Re: sata_nv + ADMA + Samsung disk problem

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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

-- 
     ---------------------------------------------------------
     MTA SZTAKI Computer and Automation Research Institute
                Hungarian Academy of Sciences
     ---------------------------------------------------------
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