There is a bug in aufs where fstat() returns a st_size value of zero. This causes cpio to fail on symlinks because st_size is supposed to be the symlink string length. It also causes 'du' to return usage sizes of zero unless the "--apparent" option is used.
I am using aufs 20081208 in SLAX. I can send more details if needed. Technically, it may be valid to return zero for virtual files if they don't use space in base union filesystem. However, it is definitely a bug to return zero for symlink names. Looking at sources for Linux coreutils, they don't fail because they all use a function to read symlinks that is intended to be tolerant of buggy filesystems. But, it uses multiple readlink() calls because it has to guess the length. Joe Krahn ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com
