He needs to run a full offline or long test before checking with smartctl -a -- since it won't show any sector errors if those tests weren't run at least once. On Thu, Jan 21, 2010 at 1:25 AM, Brett Russ <bruss@xxxxxxxxxxx> wrote: > On 01/20/2010 03:44 PM, Majed B. wrote: >> >> You can find details on these parameters and their values in md's >> documentation: http://www.mjmwired.net/kernel/Documentation/md.txt >> >> A mismatch count can be checked by writing "check" to the proper file >> as stated in line 376: >> http://www.mjmwired.net/kernel/Documentation/md.txt#376 > > Sounds like Jon may have a flaky HDD if certain members continually throw > errors. Jon, can you check SMART stats on your drives? > > for di in a b c d e f g; do smartctl -a /dev/sd$di | grep -i _sect; done > > you may have to add another option to smartctl, I forget. > > -BR > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Majed B. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html