FUSE error: Transport endpoint is not connected

Question

I'm trying to implement the FUSE filesystem. I am receiving this error:

cannot access MountDir: Transport endpoint is not connected

This the relevant parts of the program. There are two directories, MirrorDir and MountDir, that exist withing the same directory as all of the code. I am calling the program like this:

./myFS -o nonempty -o allow_other MirrorDir MountDir 

Can anyone see what I am doing wrong?

static struct fuse_operations xmp_oper = {     .getattr    = xmp_getattr,     .readdir    = xmp_readdir,     .open       = xmp_open,     .read       = xmp_read, };  int main(int argc, char *argv[]) {     int fuse_stat;     char* mirrorDir;      mirrorDir = malloc(sizeof(strlen(argv[argc-2]+1)));     if (mirrorDir == NULL) {         perror("main calloc");         abort();     }      // Pull the rootdir out of the argument list and save it in my internal data     mirrorDir = realpath(argv[argc-2], NULL);      argv[argc-2] = argv[argc-1];     argv[argc-1] = NULL;     argc--;      // turn over control to fuse     fprintf(stderr, "about to call fuse_main\n");        fuse_stat = fuse_main(argc, argv, &xmp_oper, mirrorDir);     fprintf(stderr, "fuse_main returned %d\n", fuse_stat);     return fuse_stat; } 

Answer 1

This typically is caused by the mount directory being left mounted due to a crash of your filesystem. Go to the parent directory of the mount point and enter fusermount -u YOUR_MNT_DIR.

If this doesn't do the trick, do sudo umount -l YOUR_MNT_DIR.