On Mar 03, 2004 18:36 -0800, Guolin Cheng wrote: > Then How can I figure out whether the files are defragmented? Because the > file system's read/write speed is greatly slow down ( about 8-10 times > slower in extreme cases). I think there was a tool which would map your files for you, using the FIBMAP ioctl, but you could also use debugfs "stat" to tell you the block maps of particular files. > Can you suggest a tool|package to report file systems' defragment > percentage? I tried a beta version oodcmd tool which reports both block > defragment percentage and inode defragment percentage, are those enough? > or there are still more defragment characteristics? I'm a little > hesitate to use the commercial oodcmd tool since it can only work when > file systems are unmounted and idle.. sigh.. If you have times when filesystem is nearly empty, moving files to a temp partition and moving back would defragment. Not quite "online" but avoids need to unmount/reformat. Sorry, nothing better at this time. Andrew Morton had once implemented a simple "move block" ioctl while live, but it was never included into the kernel (could be used by a defragmenter). Cheers, Andreas -- Andreas Dilger http://sourceforge.net/projects/ext2resize/ http://www-mddsp.enel.ucalgary.ca/People/adilger/ _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
