From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Turmel Subject: Re: RAID Issues - RAID10 working but with errors Date: Thu, 2 Apr 2020 07:20:13 -0400 Message-ID: References: <20200402091914.4330D24003E@gemini.denx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200402091914.4330D24003E@gemini.denx.de> Content-Language: en-US Sender: linux-raid-owner@vger.kernel.org To: Wolfgang Denk , Adam Goryachev Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 4/2/20 5:19 AM, Wolfgang Denk wrote: > Dear Adam, > > In message you wrote: >> >> smartctl -x /dev/sdd > ... >> Model Family:     Western Digital RE4 >> Device Model:     WDC WD2003FYYS-02W0B0 >> Serial Number:    WD-WMAY00922575 > ... >> SMART Attributes Data Structure revision number: 16 >> Vendor Specific SMART Attributes with Thresholds: >> ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE >>   1 Raw_Read_Error_Rate     POSR-K   200   200   051    -    23 >>   3 Spin_Up_Time            POS--K   253   253   021    -    8583 >>   4 Start_Stop_Count        -O--CK   100   100   000    -    77 >>   5 Reallocated_Sector_Ct   PO--CK   184   184   140    -    126 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >>   7 Seek_Error_Rate         -OSR-K   200   200   000    -    0 >>   9 Power_On_Hours          -O--CK   017   017   000    -    61089 >>  10 Spin_Retry_Count        -O--CK   100   253   000    -    0 >>  11 Calibration_Retry_Count -O--CK   100   253   000    -    0 >>  12 Power_Cycle_Count       -O--CK   100   100   000    -    67 >> 192 Power-Off_Retract_Count -O--CK   200   200   000    -    48 >> 193 Load_Cycle_Count        -O--CK   200   200   000    -    28 >> 194 Temperature_Celsius     -O---K   118   105   000    -    34 >> 196 Reallocated_Event_Count -O--CK   095   095   000    -    105 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> 197 Current_Pending_Sector  -O--CK   200   200   000    -    21 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> 198 Offline_Uncorrectable   ----CK   200   200   000    -    0 >> 199 UDMA_CRC_Error_Count    -O--CK   200   200   000    -    0 >> 200 Multi_Zone_Error_Rate   ---R--   200   200   000    -    2 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > This disk has a pretty high count of reallocated sectors, plus a lot > of other errors. I recommend to replace it ASAP. It is not worth Concur. Old and worn out. Personally, I replace when reallocations are in the 10 to 20 range. Once you get past that, they seem to start coming much faster. >> smartctl -x /dev/sdf > ... >> Model Family:     Western Digital RE4 >> Device Model:     WDC WD2003FYYS-02W0B0 >> Serial Number:    WD-WMAY00611922 > ... >> ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE >>   1 Raw_Read_Error_Rate     POSR-K   200   200   051    -    0 >>   3 Spin_Up_Time            POS--K   253   253   021    -    7350 >>   4 Start_Stop_Count        -O--CK   100   100   000    -    73 >>   5 Reallocated_Sector_Ct   PO--CK   200   200   140    -    0 >>   7 Seek_Error_Rate         -OSR-K   200   200   000    -    0 >>   9 Power_On_Hours          -O--CK   051   051   000    -    36231 >>  10 Spin_Retry_Count        -O--CK   100   253   000    -    0 >>  11 Calibration_Retry_Count -O--CK   100   253   000    -    0 >>  12 Power_Cycle_Count       -O--CK   100   100   000    -    64 >> 192 Power-Off_Retract_Count -O--CK   200   200   000    -    46 >> 193 Load_Cycle_Count        -O--CK   200   200   000    -    26 >> 194 Temperature_Celsius     -O---K   118   094   000    -    34 >> 196 Reallocated_Event_Count -O--CK   200   200   000    -    0 >> 197 Current_Pending_Sector  -O--CK   200   200   000    -    0 >> 198 Offline_Uncorrectable   ----CK   200   200   000    -    0 >> 199 UDMA_CRC_Error_Count    -O--CK   200   200   000    -    0 >> 200 Multi_Zone_Error_Rate   ---R--   200   200   000    -    2 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > ... >>   40 -- 51 0a 00 00 00 2a 25 4e 10 40 00  Error: UNC at LBA = >> 0x2a254e10 = 707087888 > ... >>   40 -- 51 0a 00 00 00 1e 5a 3e 86 40 00  Error: UNC at LBA = >> 0x1e5a3e86 = 509230726 > ... >>   40 -- 51 0a 00 00 00 1e 0c 77 d3 40 00  Error: UNC at LBA = >> 0x1e0c77d3 = 504133587 > ... >>   40 -- 51 0a 00 00 00 1d e4 17 e7 40 00  Error: UNC at LBA = >> 0x1de417e7 = 501487591 > ... >>   40 -- 51 0a 00 00 00 1d c0 73 99 40 00  Error: UNC at LBA = >> 0x1dc07399 = 499151769 > ... >>   40 -- 51 0a 00 00 00 1d 23 fc 01 40 00  Error: UNC at LBA = >> 0x1d23fc01 = 488897537 > > This disk also has stored a number of errors, but it does not look > as bad as the first one. However, there are errors. I would > replace it as well. Disagree. No reallocations by the drive, just bad block log entries. This drive is fine. The bad block log mis-feature should be turned off after failing this drive, zeroing its superblock, and adding back to the array (so the bad blocks get reconstructed). The bad block log mis-feature should never have been merged in its current form--it simply prevents redundancy from ever working on problem sectors, and cannot distinguish correctable communications problems from true underlying uncorrectable sectors. Which should be left to the drive, at least until it runs out of spare sectors. (And why would you keep such a drive anyways?) Bad block logging in MD raid is *Dangerous* *Junk*. > Best regards, > > Wolfgang Denk Regards, Phil