Ramdisk 內(nèi)存系統(tǒng)配置
1研乒，kernel? 配置，設(shè)置ramdisk 大小
[root@localhost ~]# cat /etc/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:? You have a /boot partition.? This means that
#????????? all kernel and initrd paths are relative to /boot/, eg.
#????????? root (hd0,0)
#????????? kernel /vmlinuz-version ro root=/dev/vda6
#????????? initrd /initrd-[generic-]version.img
#boot=/dev/vda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.32-358.el6.x86_64)
?
?root (hd0,0)
?kernel /vmlinuz-2.6.32-358.el6.x86_64 ro root=UUID=5f60bd8c-5991-4101-a1f4-a08f3ef88832 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto? KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet ramdisk_size=102400
?initrd /initramfs-2.6.32-358.el6.x86_64.img???????????????????
2淋硝， 格式化RAM 分區(qū)
?mke2fs /dev/ram0
?
3雹熬， 創(chuàng)建掛載目錄
mkdir /ramdisk
4宽菜，掛載ramdisk 目錄
mount /dev/ram0 /ramdisk
?
5，驗證ramdisk 文件系統(tǒng)
[root@localhost ~]# df -h
Filesystem??????????? Size? Used Avail Use% Mounted on
/dev/vda6????????????? 24G? 601M?? 22G?? 3% /
tmpfs???????????????? 1.9G???? 0? 1.9G?? 0% /dev/shm
/dev/vda1???????????? 504M?? 43M? 436M?? 9% /boot
/dev/vda3????????????? 30G? 3.2G?? 25G? 12% /usr
/dev/vda2????????????? 50G? 618M?? 47G?? 2% /var
/dev/vdb1????????????? 50G? 690M?? 47G?? 2% /opt
/dev/ram0????????????? 97M? 1.6M?? 91M?? 2% /ramdisk?
[root@localhost ramdisk]# ls
lost+found
[root@localhost ramdisk]# dd if=/dev/zero of=./a.img count=88 bs=1M
88+0 records in
88+0 records out
92274688 bytes (92 MB) copied, 0.116734 s, 790 MB/s
[root@localhost ramdisk]# df -h
Filesystem??????????? Size? Used Avail Use% Mounted on
/dev/vda6????????????? 24G? 601M?? 22G?? 3% /
tmpfs???????????????? 1.9G???? 0? 1.9G?? 0% /dev/shm
/dev/vda1???????????? 504M?? 43M? 436M?? 9% /boot
/dev/vda3????????????? 30G? 3.2G?? 25G? 12% /usr
/dev/vda2????????????? 50G? 618M?? 47G?? 2% /var
/dev/vdb1????????????? 50G? 690M?? 47G?? 2% /opt
/dev/ram0????????????? 97M?? 90M? 2.0M? 98% /ramdisk
6,配置完成竿报！
