How to customize Video services-RAMDisk memory file system

1,kernel configuration, setting RAMDisk size

[[Email protected] ~]# 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/vdadefault =0timeout=5splashimage= (hd0,0)/grub/splash.xpm.gzhiddenmenutitle 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. Format the RAM partition

Mke2fs/dev/ram0

3. Create mount Directory

Mkdir/ramdisk

4. Mount the RAMDisk directory

Mount/dev/ram0/ramdisk

5. Verifying the RAMDisk file system

[[email protected] ~]# df -hfilesystem             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

[[email protected] ramdisk]# lslost+found[[email  Protected] ramdisk]# dd if=/dev/zero of=./a.img count=88 bs=1m88+0 records  in88+0 records out92274688 bytes  (92 MB)  copied, 0.116734 s,  790 MB/S 

[[email protected] ramdisk]# df -hfilesystem             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, Configuration Complete!

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How to customize Video services-RAMDisk memory file system