3 ms·

Yeah, mv is atomic but I believe that a crash can still leave your data inconsistent due to write reordering, see: http://comments.gmane.org/gmane.os.solaris.o

• ibotty 14y ago
  yes. that's a good idea if you care about it. the good part about this solution is that even if the newly deployed file tree becomes corrupted, you can simply point the symlink to the old (certainly not corrupt) tree. that is easy and fast error recovery. an fsync in between makes the window very small, so that only the symlink might get broken.