"Guy" <bugzilla@watkins-home.com> writes: > linux-raid-owner@vger.kernel.org wrote: > > > I recently created a RAID1 mirror from two identical RAID0 arrays > > under Linux 2.6.0. I was surprised when /proc/mdstat reported a > > resync speed of 1 MB/s, even though the system was otherwise idle. I > > increased the min sync rate in /proc/sys/dev/raid/speed_limit_min to a > > large value, and was happy to see the resync rate increase to 40 MB/s. > > It seems to me like something confused the RAID1 layer into thinking > > there was lots of IO going on in the system. My guess is that the > > disk IO generated by the RAID0 is being overlooked by RAID1 as being > > caused by the resync rather than other system activity. Whatever the > > cause, the current behavior is no good. I have no idea how to fix it, > > though. > > You did not state your max speed setting. > Did you try to increase the max speed? The max speed was 200000, and I left it there. That is also the value I set min speed to, just to make sure I'd max out the disks. -- Måns Rullgård mru@kth.se - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
