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[smartmontools-support]Error: UNC 1 sector - but extended tests pass
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From: Dave G. (Home) <gil...@tr...> - 2005-03-31 17:17:57
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Hi,
I've got a pair of Maxtor 6Y080L0 PATA drives in a soft RAID1 on
Linux; a couple of weeks ago one of them dropped out of the RAID with
the error:
Mar 13 00:00:20 tree kernel: hda: dma_intr: status=0x51 { DriveReady
SeekComplete Error }
Mar 13 00:00:20 tree kernel: hda: dma_intr: error=0x40 {
UncorrectableError }, LBAsect=16969652, sector=1209880
Mar 13 00:00:20 tree kernel: end_request: I/O error, dev 03:03 (hda),
sector 1209880
Mar 13 00:00:20 tree kernel: md: (skipping faulty hda3 )
So I ran the built in drive tests on the dell server it was connected to
and it said it was fine. I've swapped the drive out and put this in
another machine; Maxtor's 'advanced' tests say the drive is fine - and
this is where I bought smart tools into it.
The error log has:
Error 1 occurred at disk power-on lifetime: 3106 hours (129 days + 10 hours)
When the command that caused the error occurred, the device was in an
unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 01 ad ef 02 e1 Error: UNC 1 sectors at LBA = 0x0102efad = 16969645
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 08 ad ef 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 95 ef 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 85 ef 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 d5 ed 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 bd ed 02 e1 08 21d+03:28:33.824 READ DMA
So this looks consistent with the error under Linux.
(the power on hours are completely bogus being a Maxtor).
I did an Extended offline test and that says 'Completed without error';
Num Test_Description Status Remaining
LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 2896
-
# 2 Extended offline Completed without error 00% 0
-
# 3 Short offline Completed without error 00% 0
-
The reallocated_sector_ct, reallocated_event_count,
current_pending_sector, offline_uncorrectable, UDMA_CRC_Error_Count are
all zero.
So what is going on here? How can a drive had an uncorrectable error,
apparently not reallocated it, not pended it, but test happily being OK?
(Full smartctl dump included)
Thanks in advance, (please cc - I'm not on the list but will check the
archives occasionally for a few days)
Dave
smartctl version 5.32 Copyright (C) 2002-4 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: Maxtor 6Y080L0
Serial Number: Y2EGB6AE
Firmware Version: YAR41BW0
Device is: In smartctl database [for details use: -P show]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 0
Local Time is: Thu Mar 31 16:46:44 2005 EST
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: ( 241) 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.
No General Purpose Logging support.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 36) 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
3 Spin_Up_Time 0x0027 252 252 063 Pre-fail
Always - 997
4 Start_Stop_Count 0x0032 253 253 000 Old_age
Always - 8
5 Reallocated_Sector_Ct 0x0033 253 253 063 Pre-fail
Always - 0
6 Read_Channel_Margin 0x0001 253 253 100 Pre-fail
Offline - 0
7 Seek_Error_Rate 0x000a 253 252 000 Old_age
Always - 0
8 Seek_Time_Performance 0x0027 251 246 187 Pre-fail
Always - 64387
9 Power_On_Minutes 0x0032 245 245 000 Old_age
Always - 906h+37m
10 Spin_Retry_Count 0x002b 252 252 157 Pre-fail
Always - 0
11 Calibration_Retry_Count 0x002b 252 252 223 Pre-fail
Always - 0
12 Power_Cycle_Count 0x0032 253 253 000 Old_age
Always - 16
192 Power-Off_Retract_Count 0x0032 253 253 000 Old_age Always
- 0
193 Load_Cycle_Count 0x0032 253 253 000 Old_age Always
- 0
194 Temperature_Celsius 0x0032 253 253 000 Old_age Always
- 39
195 Hardware_ECC_Recovered 0x000a 253 249 000 Old_age Always
- 18403
196 Reallocated_Event_Count 0x0008 253 253 000 Old_age
Offline - 0
197 Current_Pending_Sector 0x0008 253 253 000 Old_age
Offline - 0
198 Offline_Uncorrectable 0x0008 253 253 000 Old_age
Offline - 0
199 UDMA_CRC_Error_Count 0x0008 199 199 000 Old_age
Offline - 0
200 Multi_Zone_Error_Rate 0x000a 252 252 000 Old_age Always
- 0
201 Soft_Read_Error_Rate 0x000a 253 252 000 Old_age Always
- 0
202 TA_Increase_Count 0x000a 252 252 000 Old_age Always
- 272
203 Run_Out_Cancel 0x000b 253 252 180 Pre-fail Always
- 22
204 Shock_Count_Write_Opern 0x000a 252 252 000 Old_age Always
- 0
205 Shock_Rate_Write_Opern 0x000a 252 252 000 Old_age Always
- 0
207 Spin_High_Current 0x002a 252 252 000 Old_age Always
- 0
208 Spin_Buzz 0x002a 252 252 000 Old_age Always
- 0
209 Offline_Seek_Performnce 0x0024 195 194 000 Old_age
Offline - 0
99 Unknown_Attribute 0x0004 253 253 000 Old_age
Offline - 0
100 Unknown_Attribute 0x0004 253 253 000 Old_age
Offline - 0
101 Unknown_Attribute 0x0004 253 253 000 Old_age
Offline - 0
SMART Error Log Version: 1
ATA Error Count: 1
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 1 occurred at disk power-on lifetime: 3106 hours (129 days + 10 hours)
When the command that caused the error occurred, the device was in an
unknown state.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 01 ad ef 02 e1 Error: UNC 1 sectors at LBA = 0x0102efad = 16969645
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
c8 00 08 ad ef 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 95 ef 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 85 ef 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 d5 ed 02 e1 08 21d+03:28:33.824 READ DMA
c8 00 08 bd ed 02 e1 08 21d+03:28:33.824 READ DMA
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% 2896
-
# 2 Extended offline Completed without error 00% 0
-
# 3 Short offline Completed without error 00% 0
-
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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