Comment 14 for bug 275604

I'm seeing the problem, but I'm not using RAID. I have two encrypted partitions -- one setup up automatically during installation, and the other set up manually with cryptsetup and LUKS.

I copied some big files from one encrypted partition on one hard drive to another encrypted partition on another hard drive. The GNOME System Monitor Disk graph showed no activity and always read "0% in use."

In case it helps, here are a few "cat /proc/diskstats | grep 'sda5'" where /dev/sda5 was being read:

8 5 sda5 508674 162562 89202476 2621612 217217 396877 4915240 4481024 0 1655820 7106140
8 5 sda5 508902 162639 89257316 2621928 217217 396877 4915240 4481024 0 1656068 7106452
8 5 sda5 509192 162834 89325884 2622336 217217 396877 4915240 4481024 1 1656384 7106860
8 5 sda5 509435 162996 89380980 2622720 217217 396877 4915240 4481024 0 1656648 7107244
8 5 sda5 509690 163158 89439404 2623040 217217 396877 4915240 4481024 0 1656888 7107564

And here are a few "cat /proc/diskstats | grep 'sdb3'" where /dev/sdb3 was being written:

8 19 sdb3 910 4335 8085 39740 1442684 8492129 79484712 34341148 50 935392 34797252
8 19 sdb3 910 4335 8085 39740 1443024 8507159 79596096 34435400 92 936644 34899536
8 19 sdb3 910 4335 8085 39740 1443300 8513908 79684296 34544964 0 937684 35008688
8 19 sdb3 911 4335 8093 39748 1445398 8517307 79728232 34546388 3 938172 35010120
8 19 sdb3 911 4335 8093 39748 1446796 8537921 79853568 34583604 93 939416 35063652