software raid

[vu pham]

> This is from the mdadm manual, describing modes of operation:
> 
> Follow or Monitor 
> 	Monitor one or more md devices and act on any state changes. This is only
> meaningful for raid1, 4, 5, 6, 10 or multipath arrays as only these have
> interesting state. raid0 or linear never have missing, spare, or failed
> drives, so there is nothing to monitor.
> 
> First, do you have the mdadm monitor daemon enabled and running?
> 
> Second, from the sound of it, monitoring may not work on raid 0 arrays, even 
> if you have it enabled. Someone with more knowledge of mdadm will have to 
> answer this.

I think it is the raid 0 that is not monitored. After changing to raid 
5,  mdadm does show the problem.

This is my test system. Just want to see how software RAID works. Never 
use it before. Cool but I still prefer the hardware RAID :)


Thanks,

Vu