Date: Wed, 18 Nov 2009 19:24:42 -0800 From: "Ronald F. Guilmette" <rfg@tristatelogic.com> To: Roland Smith <rsmith@xs4all.nl> Cc: freebsd-questions@freebsd.org Subject: Re: Bad Blocks... Should I RMA? Message-ID: <81118.1258601082@tristatelogic.com> In-Reply-To: <20091116182358.GA95918@slackbox.xs4all.nl>
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In message <20091116182358.GA95918@slackbox.xs4all.nl>, Roland Smith <rsmith@xs4all.nl> wrote: >On Sun, Nov 15, 2009 at 04:06:55PM -0800, Ronald F. Guilmette wrote: >>=20 >> In one of my systems, I've got a Seagate SATA 500GB drive (ST3500320AS) >> which is actually not very old... purchased 12/11/2008. ><snip> >> same single block. Here's the relevant lines from /var/log/messages: >>=20 >> Nov 15 15:24:17 coredump kernel: ad4: FAILURE - READ_DMA status=3D51<READ= >Y,DSC,ERROR> error=3D40<UNCORRECTABLE> LBA=256230591 >> Nov 15 15:24:43 coredump kernel: ad4: FAILURE - READ_DMA status=3D51<READ= >Y,DSC,ERROR> error=3D40<UNCORRECTABLE> LBA=256230591 >> Nov 15 15:24:46 coredump kernel: ad4: FAILURE - READ_DMA status=3D51<READ= >Y,DSC,ERROR> error=3D40<UNCORRECTABLE> LBA=256230591 >>=20 ... >Install the smartmontools port, and check the drive with >'smartctl -a /dev/ad4'. If you see a non-zero Reallocated_Sector_Ct, RMA it >immediately, as it is about to fail. If see other errors reported, RMA it. OK, I went to do this, but first (I figured) I had to umount the drive. So I did that first and... Yikes! Just umount'ing it caused an error, allegedly in LBA sector 0! Yikes! Nov 18 19:04:06 coredump kernel: ad4: TIMEOUT - READ_DMA retrying (1 retry left) LBA=0 Ignoring that for the moment, I went ahead and ran smartctl -a /dev/ad4 as you suggested. Results are attached below. I have no idea how to read this stuff, and would be happy to be tutored a bit on this. But anyway, because of the *new* error I just got (LBA=0) I have decided now that I *will* RMA the drive back after all. (Getting an error reading logical sector zero is just too scary for me!) Note that the original problematic sector was 256230591, however the one that Seatools had found to be bad (and had allegedly re-mapped for me) was 256230614... a number which also appears several times in the report below. I don't really understand what I'm looking at here. If in fact Seatools did actually "repair" (re-map?) a sector for me, then shouldn't Reallocated_Sector_Ct have some positive non-zero value? ============================================================================== smartctl version 5.38 [amd64-portbld-freebsd7.2] 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: ST3500320AS Serial Number: 5QM2H3V3 Firmware Version: SD15 User Capacity: 500,107,862,016 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: Wed Nov 18 19:12:56 2009 PST 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: ( 119) 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 107 100 006 Pre-fail Always - 13587485 3 Spin_Up_Time 0x0003 094 094 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 11 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 100 253 030 Pre-fail Always - 186292 9 Power_On_Hours 0x0032 092 092 000 Old_age Always - 7454 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 7 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 61 184 Unknown_Attribute 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 099 099 000 Old_age Always - 1 188 Unknown_Attribute 0x0032 100 099 000 Old_age Always - 4295032833 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 058 054 045 Old_age Always - 42 (Lifetime Min/Max 42/42) 194 Temperature_Celsius 0x0022 042 046 000 Old_age Always - 42 (0 24 0 0) 195 Hardware_ECC_Recovered 0x001a 024 010 000 Old_age Always - 13587485 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 1 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 1 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 SMART Error Log Version: 1 ATA Error Count: 4 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 4 occurred at disk power-on lifetime: 7381 hours (307 days + 13 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 d6 c4 45 0f Error: UNC at LBA = 0x0f45c4d6 = 256230614 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- 42 00 00 00 c0 45 4f 00 00:21:01.918 READ VERIFY SECTOR(S) EXT 42 d0 00 00 b0 38 ef 00 00:20:57.686 READ VERIFY SECTOR(S) EXT 42 d0 00 00 c0 28 ef 00 00:20:52.497 READ VERIFY SECTOR(S) EXT 42 d0 00 00 d0 18 ef 00 00:20:47.331 READ VERIFY SECTOR(S) EXT 42 d0 00 00 e0 08 ef 00 00:20:42.180 READ VERIFY SECTOR(S) EXT Error 3 occurred at disk power-on lifetime: 0 hours (0 days + 0 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 d6 c4 45 0f Error: UNC at LBA = 0x0f45c4d6 = 256230614 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 20 bf c4 45 ef 00 00:11:39.184 READ DMA ca 00 14 5f 2f 00 e0 00 00:11:39.184 WRITE DMA ca 00 20 3f 2f 00 e0 00 00:11:39.183 WRITE DMA ca 00 20 1f 2f 00 e0 00 00:11:39.183 WRITE DMA ca 00 04 bf 00 00 e0 00 00:11:39.182 WRITE DMA Error 2 occurred at disk power-on lifetime: 0 hours (0 days + 0 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 d6 c4 45 0f Error: UNC at LBA = 0x0f45c4d6 = 256230614 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 20 bf c4 45 ef 00 00:11:36.258 READ DMA ca 00 20 9f 82 4b ef 00 00:11:35.521 WRITE DMA ca 00 20 7f 82 4b ef 00 00:11:35.521 WRITE DMA ca 00 20 df c4 45 ef 00 00:11:35.520 WRITE DMA ca 00 40 1f 82 4b ef 00 00:11:13.328 WRITE DMA Error 1 occurred at disk power-on lifetime: 0 hours (0 days + 0 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 d6 c4 45 0f Error: UNC at LBA = 0x0f45c4d6 = 256230614 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 20 bf c4 45 ef 00 00:11:10.133 READ DMA ca 00 04 1f c4 45 ef 00 00:11:06.521 WRITE DMA ca 00 20 df c4 45 ef 00 00:11:04.521 WRITE DMA c8 00 04 5b c4 45 ef 00 00:10:54.453 READ DMA ca 00 20 df c4 45 ef 00 00:10:17.522 WRITE DMA SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Aborted by host 60% 7381 - 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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