iostat strangeness

[Michael ODonnell]

<shotInTheDark>

Depending on your versions of kernel and app, iostat
apparently looks in some combination of these:

   /etc/sysstat/sysstat.ioconf
   /proc/diskstats
   /proc/partitions
   /proc/self/mountstats
   /proc/stat
   /proc/uptime
   /sys/devices/system/cpu

...so if it were me I might do something like note the
major/minor numbers of the devices in question and then
verify their entries in sysstat.ioconf which (I believe)
iostat uses as an aid in finding the correct info when
it's rummaging around in those other files.

</shotInTheDark>