I have FreeBSD 8.2 with ZFS v28. 8 cpu cores, 16Gb RAM. Two disk drives (1.5Tb WD Green) on ZFS mirror raid.
My system strangely uses memory. With a lot of free (wired) memory, it starts to use swap and then doesn't clean it! Swap usage keeps growing. munin-graph swap
And then I see on my kvm these messages:
All file reads or writes seem very slow. When I use ssh and, for example, do
nano /etc/rc.conf it pauses for 3-5 seconds before it works.
Will my disk drives die soon, or is the problem elsewhere?