Jeremy Chadwick said:
ad6: FAILURE - READ_DMA status=51<READY,DSC,ERROR>
error=40<UNCORRECTABLE> LBA=134802751
Are you sure you don't have a bad hard disk? This looks to be like a
classic block/sector failure.
I hadn't realized that a bad block would manifest itself with a message
about DMA. Seems like such semantics would be a little obscure to most
users, apparently including me.
So you're saying that the *exact* same READ_DMA error, at the *exact*
same LBA, is reported on ad4? If so, that's very bizarre.
No, perhaps I wasn't clear enough. Both instances were on ad6, so far.
Can you please provide the output from the following commands?
See end of message. Let me know if you then want more (in- or out-of-band).
Having now installed smartmontools, you can see below that I ran it for
both ad4 and ad6. Sure enough, ad6 has logged 2 READ DMA errors - does
that make this a definitive bad disk then?
Should I not be worried about ad4 too? Those Raw_Read_Error_Rate and
Seek_Error_Rate numbers should be zero or very close to it, shouldn't
they? I don't know how to interpret what I'm seeing in that output, so
I'd appreciate any insight. Should I be returning both disks for
warranty claims (they're both very recently purchased)?
Wojciech Puchar said:
boot from some kind of live CD, then make another mirror (single disk now)
on other drive, then do
dd if=/dev/ad6s1 of=/dev/mirror/newmirror bs=2k conv=noerror,sync
i intentionally did bs=2k instead of larger, to minimize amount of lost
data.
then change your system to boot from newmirror, take out /dev/ad6 and have
it replaced on warranty (or buy new), put new ad6, insert it to the
mirror.
I think you're describing a method to help me save as much data from ad6
as possible. Fortunately, this is all about constructing a new system,
so there's no data yet to lose.
Is there anything I should know about this model of hard disk with
regards to being known for problems? Also, is there a good test I can
perform to hopefully flush out any problems before I put this thing into
service?
Carl / K0802647
######## Additional Information ########
# vmstat -i
interrupt total rate
irq1: atkbd0 4 0
irq4: sio0 125724 16
irq19: uhci3 5 0
irq21: uhci1+ 478364 63
irq23: uhci2 ehci1 1 0
cpu0: timer 14517071 1923
irq256: em0 109568 14
cpu1: timer 14514956 1922
Total 29745693 3940
# atacontrol list | grep -v "no device present"
ATA channel 0:
ATA channel 1:
ATA channel 2:
Master: ad4 <ST31000340AS/SD15> Serial ATA II
ATA channel 3:
Master: ad6 <ST31000340AS/SD15> Serial ATA II
ATA channel 4:
Master: acd0 <HL-DT-ST DVDRAM GH20NS10/EL00> Serial ATA v1.0
ATA channel 5:
ATA channel 6:
ATA channel 7:
# atacontrol cap ad4
Protocol Serial ATA II
device model ST31000340AS
serial number xxxxxxxH
firmware revision SD15
cylinders 16383
heads 16
sectors/track 63
lba supported 268435455 sectors
lba48 supported 1953525168 sectors
dma supported
overlap not supported
Feature Support Enable Value Vendor
write cache yes yes
read ahead yes yes
Native Command Queuing (NCQ) yes - 31/0x1F
Tagged Command Queuing (TCQ) no no 31/0x1F
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management no no 65278/0xFEFE
automatic acoustic management no no 0/0x00 254/0xFE
# atacontrol cap ad6
Protocol Serial ATA II
device model ST31000340AS
serial number xxxxxxxA
firmware revision SD15
cylinders 16383
heads 16
sectors/track 63
lba supported 268435455 sectors
lba48 supported 1953525168 sectors
dma supported
overlap not supported
Feature Support Enable Value Vendor
write cache yes yes
read ahead yes yes
Native Command Queuing (NCQ) yes - 31/0x1F
Tagged Command Queuing (TCQ) no no 31/0x1F
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management no no 65278/0xFEFE
automatic acoustic management no no 0/0x00 254/0xFE
# smartctl -a /dev/ad4
smartctl version 5.38 [i386-portbld-freebsd7.0] Copyright (C) 2002-8
Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.11
Device Model: ST31000340AS
Serial Number: xxxxxxxH
Firmware Version: SD15
User Capacity: 1,000,204,886,016 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Tue Oct 28 18:07:25 2008 PDT
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: ( 650) 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 230) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x103b) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
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 117 099 006 Pre-fail
Always - 158643744
3 Spin_Up_Time 0x0003 092 091 000 Pre-fail
Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age
Always - 108
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
Always - 0
7 Seek_Error_Rate 0x000f 064 060 030 Pre-fail
Always - 2921473
9 Power_On_Hours 0x0032 100 100 000 Old_age
Always - 499
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail
Always - 0
12 Power_Cycle_Count 0x0032 100 100 020 Old_age
Always - 108
184 Unknown_Attribute 0x0032 100 100 099 Old_age Always
- 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always
- 0
188 Unknown_Attribute 0x0032 100 099 000 Old_age Always
- 65540
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always
- 0
190 Airflow_Temperature_Cel 0x0022 071 069 045 Old_age Always
- 29 (Lifetime Min/Max 23/31)
194 Temperature_Celsius 0x0022 029 040 000 Old_age Always
- 29 (0 20 0 0)
195 Hardware_ECC_Recovered 0x001a 039 019 000 Old_age Always
- 158643744
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always
- 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age
Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always
- 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
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.
# smartctl -a /dev/ad6
smartctl version 5.38 [i386-portbld-freebsd7.0] Copyright (C) 2002-8
Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Model Family: Seagate Barracuda 7200.11
Device Model: ST31000340AS
Serial Number: xxxxxxxA
Firmware Version: SD15
User Capacity: 1,000,204,886,016 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Tue Oct 28 18:08:22 2008 PDT
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: ( 642) 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 227) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x103b) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 10
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 116 100 006 Pre-fail
Always - 106947042
3 Spin_Up_Time 0x0003 092 091 000 Pre-fail
Always - 0
4 Start_Stop_Count 0x0032 100 100 020 Old_age
Always - 108
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail
Always - 2
7 Seek_Error_Rate 0x000f 061 060 030 Pre-fail
Always - 1376532
9 Power_On_Hours 0x0032 100 100 000 Old_age
Always - 499
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail
Always - 1
12 Power_Cycle_Count 0x0032 100 100 020 Old_age
Always - 108
184 Unknown_Attribute 0x0032 100 100 099 Old_age Always
- 0
187 Reported_Uncorrect 0x0032 098 098 000 Old_age Always
- 2
188 Unknown_Attribute 0x0032 100 100 000 Old_age Always
- 0
189 High_Fly_Writes 0x003a 100 100 000 Old_age Always
- 0
190 Airflow_Temperature_Cel 0x0022 071 069 045 Old_age Always
- 29 (Lifetime Min/Max 23/31)
194 Temperature_Celsius 0x0022 029 040 000 Old_age Always
- 29 (0 19 0 0)
195 Hardware_ECC_Recovered 0x001a 038 018 000 Old_age Always
- 106947042
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always
- 2
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age
Offline - 2
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always
- 0
SMART Error Log Version: 1
ATA Error Count: 2
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 2 occurred at disk power-on lifetime: 475 hours (19 days + 19 hours)
When the command that caused the error occurred, the device was
active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 9d ed 08 08 Error: UNC at LBA = 0x0808ed9d = 134802845
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 00 3f ed 08 48 00 13d+00:32:54.564 READ DMA
c8 00 00 3f ec 08 48 00 13d+00:32:54.563 READ DMA
c8 00 00 3f eb 08 48 00 13d+00:32:54.562 READ DMA
c8 00 00 3f ea 08 48 00 13d+00:32:54.561 READ DMA
c8 00 00 3f e9 08 48 00 13d+00:32:54.560 READ DMA
Error 1 occurred at disk power-on lifetime: 474 hours (19 days + 18 hours)
When the command that caused the error occurred, the device was
active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 9d ed 08 08 Error: UNC at LBA = 0x0808ed9d = 134802845
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 00 3f e9 08 48 00 12d+23:04:28.359 READ DMA
c8 00 00 3f 53 06 48 00 12d+23:04:27.202 READ DMA
c8 00 00 3f 52 06 48 00 12d+23:04:27.193 READ DMA
c8 00 00 3f 51 06 48 00 12d+23:04:27.191 READ DMA
c8 00 00 3f 50 06 48 00 12d+23:04:27.191 READ DMA
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
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.
######## END ########
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