Well apart from some systems using GiB and others GB and then some manufacturers using base10 and not base3 and saying that 1GB is 1000MB and not 1024 – I have found another one.

When making a file system that is not your root file system (/) or var (/var) or root (/root), etc – say a second drive or partition used for something else, try to format with the “-m 0″ command so that 5% is not reserved for the root user.

On a 1024GB array – say 1TB – that is a whopping ~52GB!!

Also if you will have many files in said system, also throw in the “-O dir_index” flag too, to enable hash tree’s for directory look ups – =big= speed increase.

The “gam_server” process. Set to identify when any file in the system is changed. A useful action that has benefits. But not when it does it 3-5 times per second and the sever is serving NFS and PostgreSQL!

To fix it, just ensure that somewhere in /etc/ (RedHat Base) or /etc/gamin/ (Debian Base) has a file called:

“gaminrc”

Add in one line for each file system type that you have. For example mine is now:

#

fsset ext3 poll 10

fsset nfs poll 10

fsset xfs poll 10

#

The daemon will now scan every 10 seconds. Of course for it to do that, make sure to invoke a “kill -s 9″ first!