hi... i intend to develop a backup application for linux platform... the workflow is as follows: - freeze the file-system(ext2 or ext3) - take the bckup - release the file system. i am not able to find the relevant ioctl or api for freezing & releasing the file system... so... i need some help... thanks... Satish Singhal __________________________________________________ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com