RAM Disk Creation & Mount

What Is RAM Disk? RAM disk is the portion for ram which acts as the hard disk. For that we allocate some portion for ram and then mount it. below are the configurations tested on CentOS 5.2

You can configure and mount RAM Disk using the following procedure.

1. In /etc/grub.conf add the option that is highlited in the below kernel line.

title CentOS (2.6.18-164.el5PAE)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-164.el5PAE ro root=LABEL=/ rhgb quiet ramdisk_size=524288
        initrd /initrd-2.6.18-164.el5PAE.img

2. now edit the /etc/rc.d/rc.local and put the below line
####### RAM DISK #######################
mkfs -t ext3 /dev/ram0 # it will formate the ramdisk
mount -t ext3 /dev/ram0 /var/spool/asterisk/monitor # it will mount ramdisk to mount point /var/spool/asterisk/monitor