Re: Huge values of mismatch_cnt on RAID 6 arrays under Fedora 18
From: Wolfgang Denk <hidden>
Date: 2013-01-28 20:19:47
Dear Piergiorgio, In message [ref] you wrote:
please grep for "Error".quoted
What does this tell us?There are for sure parity errors, but it would be more interesting to know (that's why "Error") if a specific device has/had problems.
So I see a large number (> 200,000 in one array, so far - check still running) of "Error detected at ...: disk slot unknown" messages, insequences for example like this: ... Q(0) wrong at 1951856 Q(7) wrong at 1951857 P(5) wrong at 1951858 Q(6) wrong at 1951858 Error detected at 1951858: disk slot unknown P(4) wrong at 1951859 Q(5) wrong at 1951859 Error detected at 1951859: disk slot unknown P(3) wrong at 1951860 Q(4) wrong at 1951860 Error detected at 1951860: disk slot unknown P(2) wrong at 1951861 Q(3) wrong at 1951861 Error detected at 1951861: disk slot unknown P(1) wrong at 1951862 Q(2) wrong at 1951862 Error detected at 1951862: disk slot unknown P(0) wrong at 1951863 Q(1) wrong at 1951863 Error detected at 1951863: disk slot unknown Q(0) wrong at 1951864 Q(7) wrong at 1951865 P(5) wrong at 1951866 Q(6) wrong at 1951866 Error detected at 1951866: disk slot unknown P(4) wrong at 1951867 Q(5) wrong at 1951867 Error detected at 1951867: disk slot unknown P(3) wrong at 1951868 Q(4) wrong at 1951868 Error detected at 1951868: disk slot unknown P(2) wrong at 1951869 Q(3) wrong at 1951869 Error detected at 1951869: disk slot unknown P(1) wrong at 1951870 Q(2) wrong at 1951870 Error detected at 1951870: disk slot unknown P(0) wrong at 1951871 Q(1) wrong at 1951871 Error detected at 1951871: disk slot unknown ... Does this allow to tell which disk it is? Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The first thing we do is kill all the lawyers. (Shakespeare. II Henry VI, Act IV, scene ii)