Re: Huge values of mismatch_cnt on RAID 6 arrays under Fedora 18

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Dear Piergiorgio,

In message <20130128192256.GB13803@xxxxxxxx> you wrote:
>
> please grep for "Error".
> 
> > 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

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