Resources for Debugging FUSE Filesystem

Debugging FUSE Filesystem.

Collect some tip/tricks for debugging FUSE.

Program options

1. -f : Run foreground
2. -s : Disable multiple threading

3. Enable debugging
   1. Compiling with debugging symbols enabled(-g to gcc)
   2. enable core dumps: ulimit -c unlimited
   3. If program crashes, it will have core dump in current directory
   4. load the core file: `gdb

Tools

1. Valgrind: Valgrind is an instrumentation framework for building dynamic analysis tools.

   #include <valgrind/valgrind.h>
   
   if (RUNNING_ON_VALGRIND) {
       fprintf(stderr,
           "******** Valgrind has been detected by %s\n"
           "******** If you have difficulties getting %s to work under"
           " Valgrind,\n"
           "******** see the following thread:\n"
           "******** http://www.nabble.com/valgrind-and-fuse-file-systems"
           "-td13112112.html\n"
           "******** Sleeping for 5 seconds so this doesn't fly by ....",
               progname, progname);
       sleep(5);
       fprintf(stderr, "\n");
   }

   Reference: Code from Tim Post

2. User-Mode Linux

Documents/Tutorials

1. CS135 FUSE Document
2. Use GDB to Understand FUSE File System