Software :: Preparing System To Install Qouta?

I wanted to configure my server for users that can have access to php/mysql database but with the limited harddrive space i have
i cant do unlimited space per user. So i decided to install qouta, i got this guide from : [URL] But in this guide that tells me to configure my system partitions to use qouta its says i should edit fstabs. Quota support is enabled as the filesystems are mounted, and so it must be specified in the options section of your /etc/fstab file. Specifying the quota options is as simple as adding usrquota for per-user quota, or grpquota for per-group quotes in the options column. For example this first entry without quotas:

/dev/hda1 /home ext2 defaults 1 1

Would become the following with per-user quotas enabled:

/dev/hda1 /home ext2 defaults,usrquota 1 1

Once this has been added you can remount the partition by rebooting, and install the software. This will setup the partitions to be mounted with quota support enabled, however you haven't enabled them for the running system.

My current fstab:

Code:

# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0

[code]....

As far as my knowledge goes my /home/ directory entry is located on /dev/hda2/ where the / parition is mounted.

1. What do i put in my fstab. Do i edit it use quota on /dev/hda2 (Where my root partaition is mounted). ?

2. How do i get to know on what partition (/dev//dev/hda2?, /dev/hda2?.) my home directories of the users are?

3. Can i reload fstab without having to reboot my machine? (I like keeping my uptime as high as possible )

4. Do i need to know any more stuff that u guys can give me involving risks of badly configuration or handling this matter?