Ramdisk on Linux (open)

[[Ramdisk on Linux (Open) ]]

/dev/shm is flexible-sized ram disk†

Fedora has the size changeable ramdisk /dev/shm. By mounting, we can use this device at the fast speed.

• o size=128m specify the maximum size

$ su
# mount -t tmpfs -o size=128m tmpfs /dev/shm
# ln -s /dev/shm ramdisk

/dev/ramdisk is fixed size ramdisk.†

$ su

# mke2fs /dev/ramdisk

# mkdir /mnt/ramdisk

# mount -t ext2 /dev/ramdisk /mnt/ramdisk

# df -h

mke2fs /dev/ramdisk noblock (= number of block) can specify the size.

http://itpro.nikkeibp.co.jp/article/Keyword/20070330/267007/

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