Today, I’m ordered to install Centos 5 at a server. It has four disks, 250 G each. There I had my first contact with LVM (Logical Volume Manager). Firstly I’m a bit confused. Plus, I was trying to add RAID in the mix. How come total capacity become less then 300G?
At first, I thought it was because of RAID. Actually no. It’s because I chose too small extent size. Extent size is like block size (reminds me to FAT16 – FAT32 block size issue). When I chose larger size (32 M ?), it gives me almost 800G for RAID 5. Without RAID, it gives me almost 1 TB.
Well, another day, another knowledge. All praise to the One that owns my life.