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Message-ID: <50A326FF.6060502@gmail.com>
Date: Tue, 13 Nov 2012 23:07:11 -0600
From: Robert Hancock <hancockrwd@...il.com>
To: Steven Rostedt <rostedt@...dmis.org>
CC: Jens Axboe <axboe@...nel.dk>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Possible disk failure
On 11/13/2012 09:54 PM, Steven Rostedt wrote:
> Hi Jens,
>
> Since you helped me out before, I'm going to ask for some more help ;-)
>
> I just recently purchased a new workstation from HP, and after fighting
> with getting grub2 working the way I want, I kicked off a ktest run to
> create a true min config. It basically disables options from the .config
> file until it finds a .config that that boots but will fail if you
> disable any of the configs that are set.
>
> Anyway, in the middle of this test, I started getting these nasty ata
> errors again (like the ones I got with the failed HD that you helped me
> out with on G+). But this is a brand new spanking machine (with a new
> HD), but I could have gotten a lemon.
>
> Anyway, the full dmesg is at:
>
> http://rostedt.homelinux.com/private/bxtest-ata-fail-dmesg
The important part being:
[ 11.974811] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
[ 11.982816] ata1.00: irq_stat 0x40000008
[ 11.987512] ata1.00: failed command: READ FPDMA QUEUED
[ 11.993407] ata1.00: cmd 60/08:00:00:20:92/00:00:07:00:00/40 tag 0
ncq 4096 in
[ 11.993407] res 41/40:00:04:20:92/00:00:07:00:00/40 Emask
0x409 (media error) <F>
[ 12.010367] ata1.00: status: { DRDY ERR }
[ 12.015146] ata1.00: error: { UNC }
..
[ 16.527065] end_request: I/O error, dev sda, sector 127016964
i.e. the drive reported an uncorrected read error on sector 127016964.
>
> And here's a smartctl dump:
>
> [root@...est ~]# smartctl --all /dev/sda
> smartctl 5.43 2012-06-30 r3573 [x86_64-linux-3.5.5-custom] (local build)
> Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
>
> === START OF INFORMATION SECTION ===
> Model Family: Western Digital Caviar Blue Serial ATA
> Device Model: WDC WD5000AAKX-60U6AA0
> Serial Number: WD-WCC2EF801545
> LU WWN Device Id: 5 0014ee 25ccb70a0
> Firmware Version: 18.01H18
> User Capacity: 500,107,862,016 bytes [500 GB]
> Sector Size: 512 bytes logical/physical
> Device is: In smartctl database [for details use: -P show]
> ATA Version is: 8
> ATA Standard is: Exact ATA specification draft version not indicated
> Local Time is: Tue Nov 13 17:48:40 2012 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: (0x80) Offline data collection activity
> was never started.
> Auto Offline Data Collection: Enabled.
> Self-test execution status: ( 40) The self-test routine was interrupted
> by the host with a hard or soft reset.
> Total time to complete Offline
> data collection: ( 7860) 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: ( 2) minutes.
> Extended self-test routine
> recommended polling time: ( 80) minutes.
> SCT capabilities: (0x303f) SCT Status supported.
> SCT Error Recovery Control supported.
> SCT Feature Control supported.
> SCT Data Table supported.
>
> 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 0x002f 200 200 051 Pre-fail Always - 78
> 3 Spin_Up_Time 0x0027 143 142 021 Pre-fail Always - 3850
> 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 138
> 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
> 7 Seek_Error_Rate 0x002f 100 253 051 Pre-fail Always - 0
> 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 43
> 10 Spin_Retry_Count 0x0033 100 100 051 Pre-fail Always - 0
> 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 136
> 184 End-to-End_Error 0x0033 100 100 097 Pre-fail Always - 0
> 187 Reported_Uncorrect 0x0032 022 022 000 Old_age Always - 78
> 188 Command_Timeout 0x0032 094 094 000 Old_age Always - 6
> 190 Airflow_Temperature_Cel 0x0022 074 067 040 Old_age Always - 26 (Min/Max 26/27)
> 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 123
> 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 14
> 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
> 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 1
So it looks like the drive reports there's 1 sector that will be
reallocated once it gets rewritten. It could be that the drive is
actually OK but that sector just got mis-written (due to a hard
power-off while it was being written, perhaps) and will be fine once it
gets written successfully.
You could try using hdparm commands to overwrite that sector, or just
boot from a live CD, zero out the entire disk with "dd if=/dev/zero
of=/dev/sda" and try a reinstall. If the drives go away and a long SMART
self test reports no errors, the drive is likely OK. If not, a
replacement is likely in order.
> 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
> 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
> 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 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 Extended offline Interrupted (host reset) 80% 1 -
>
> 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.
>
> [root@...est ~]#
>
>
> Any help would be appreciated. Is this HD a lemon (need to return it?)
> or did something else go wrong that is fixable.
>
> Thanks!
>
> -- Steve
>
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