On Wednesday August 2, A.J.Dawson@xxxxxxxxxxxxxx wrote: > Hi, > > I seem to be having a problem with mdadm running on Gentoo. I recently > upgraded from 1.12 to 2.5-r1 and then to 2.5.2, with both of the latter > exhibiting the same behaviour on the machine in question. > > The machine is running a RAID1 array and seemed quite happy running mdadm > 1.12. Running mdadm 2.5.2 however, approximately two days after it is > booted, a significant amount of disk activity starts. Unfortunately the > activity always seems to start overnight while I am not in the office and > so I've no idea whether it is a sudden start at the high activity level, > or whether it builds from a low start. I can hear the disks being > accessed and the machine's response becomes sluggish. If I look at the > activity of the machine using top, mdadm sits at the top of the activity > table with a low CPU consumption, but high memory consumption (%mem > > 94%). Note that I also have mdadm --follow --scan & echo $! > > /var/run/mdadm in my local.start file. Very odd. There was a memory leak in 2.5 but that was fixed in 2.5.1 and so should still be fixed in 2.5.2. Could you try running ltrace -o /tmp/ltrace -p `cat /var/run/mdadm` for a while (maybe 5 minutes), then interrupt it and send me /tmp/ltrace. That might give some hints as wto what is happening. 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
