How to format file system of a specific size in Linux

Question

How to format a file system in Linux. Lets say I have a partition /dev/sda3 which is 3GB of size but in my case I would like to format only 2Gb of space and mount it. So while running mkfs.xfs -size=2g /dev/sda3 I am getting an error. Can someone advise on this ? Thanks.

Answer 1

You have to use resize2fs command for that purpose (To change the size of file system)
1> formate the filesystem
mkfs.xfs .ext3 /path/ or mkfs -t .ext3 /path/
2> then resize ot to size you want
resize2Fs -L 2GB /dev/sda3