On Monday November 29, perbu@xxxxxxxxx wrote: > > Hi. > > We have a busy mailserver with the mail-spool on MD (raid1, consisting > of sda and sdb, ext3 w/data=journal noatime nodiratime, 2.6.6, > Debian Woody). The read-balancing does not seem to work properly. The array wasn't resyncing at the time was it? I ask partly because resyncing substantially reduces the opportunities for read-balance (it will only read balance parts of the array that are known to be in-sync) and partly because the amount of read traffic to sdb seems to start picking up at the end of your log. If you can confirm that it wasn't resyncing, I will look into it. Thanks, NeilBrown - 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