When glusterfs is being used as rootfs, doing this:
echo 3 > /proc/sys/vm/drop_caches
makes the bash that issued the command go zombie and it cannot be killed
or stopped. This happens on all my glfs-root servers. The only cure is
to reboot the machine. There is no actual crash per se - the machine
continues working and responding fine. It's particularly weird because
it is the bash process that ends up using the CPU.
Trying the same thing on a machine that is only acting as a glfs client
(not running root on glfs) works fine.
There are no performance translators, the brick layout is client side
AFR with single process client and server. The OS is CentOS 5.4 on all
boxen running kernel 2.6.18-164.9.1.el5, and glfs 2.0.9.
Gordan
