FUSE error: Transport endpoint is not connected

问题:

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;
}

回答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.

回答2:

I mounted a ssh file system (sshfs command line) and left it mounted and I had same problem, fusermount -u YOUR_MNT_DIR solved my problem. Thanks

回答3:

You may check your /etc/hosts to verify it the master node is with a fully qualified name. More details in https://community.cloudera.com/t5/CDH-Manual-Installation/Setting-the-NameNode-port-8020-to-listen-outside-of-localhost/td-p/2257 and in How to configure hosts file for Hadoop ecosystem

回答4:

Go to parent directory and back in. Worked for me.