As always, if you want new features, you upgrade to the new release.
Also extents are enabled by default, but if the fs was upgraded from ext3, then all of the files that already existed will not be using them. You can see whether a file is using extents with lsattr.
As always, if you want new features, you upgrade to the new release.
Also extents are enabled by default, but if the fs was upgraded from ext3, then all of the files that already existed will not be using them. You can see whether a file is using extents with lsattr.