Thread (52 messages) 52 messages, 9 authors, 2013-01-31

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

From: Piergiorgio Sartor <hidden>
Date: 2013-01-28 19:22:56

On Mon, Jan 28, 2013 at 08:10:41PM +0100, Wolfgang Denk wrote:
[...]
etc. etc. [The test is still running, but I already have more than
10k such lines...]
Hi Wolfgang,

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.
Note:  on one system (where I can recreate / rstore the content of the
array more easily) I decided to play some experiments, so I ran a
"repair" on the array.  The repair completed without any error
indicateion - but ended with a mismatch_cnt = 362731480.
I guess this is expected, the "repair" has the parities
fixed, nothing more, while reporting how many fixes.
 
My simple tests still ndicate no data corrption (but then I might just
be looking in the wrong places).
Well, this might be possible, even if I would not
count on it...

bye,

-- 

piergiorgio
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help