Roman Mamedov wrote:
I do not think there is a state in modern HDDs that there would be a sector which consistently takes 30-120 seconds to read. Those are either unreadable at all, or readable after a delay -- and then already remapped by the HDD into the reserved zone, so the delay is not there the next time.
Umm... yes. This is a common near-failure mode with WD disks, as I learned the hard way when I discovered that I had a server that had been built with desktop drives rather than enterprise drives. Took quite some time to figure out why my server was slowing WAY down. I still kind of wonder why md doesn't consider exceptionally long read times as a reason to drop a drive from a RAID array.
Miles Fidelman -- In theory, there is no difference between theory and practice. In practice, there is. .... Yogi Berra -- 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
