Using five lines below install gcsfuse on a brand new Ubuntu14 instance:

export GCSFUSE_REPO=gcsfuse-`lsb_release -c -s`
echo "deb http://packages.cloud.google.com/apt $GCSFUSE_REPO main" | sudo tee /etc/apt/sources.list.d/gcsfuse.list
curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

sudo apt-get update
sudo apt-get install gcsfuse

Now create a folder on a local disk (this folder is to be used as the mounting point for Google Bucket). Give this folder a full access:

sudo mkdir /home/shared 
sudo chmod 777 /home/shared 

Using gcsfuse command mount Google bucket to the mounting-point folder we created earlier. But first, list the names of the Google Buckets that are linked to your Google Project:

gsutil ls

The Google Project I work on has a single bucket named "my_bucket". Knowing a bucket name I can run gcsfuse command that will mount my_bucket Bucket on to a local /home/shared mounting-folder:

gcsfuse my_bucket /home/shared 

The execution of this command logs that it was successful:

Using mount point: /home/shared
Opening GCS connection...
Opening bucket...
Mounting file system...
File system has been successfully mounted.

But now when I try to create another folder inside of mapped /home/shared mounting-point folder I get the error message:

mkdir /home/shared/test

Error:

mkdir: cannot create directory ‘/home/shared/test’: Input/output error

Trying to fix the problem I successfully un-mount it using:

fusermount -u /home/shared

and map it back but now using another gcsfuse command-line:

mount -t gcsfuse -o rw,user  my_bucket /home/shared

But it results to the exactly same permission issue.

At very last I have made an attempt to fix this permission issue by editing /etc/fstab configuration file with:

sudo nano /etc/fstab

and then appending a line to the end of the file:

my_bucket /home/shared gcsfuse rw,noauto,user

but it did not help to solve this issue.

What needs to be changed to allow all the users a full access to the mapped Google Bucket so the users are able to create, delete and modify the files and folders stored on Google Bucket?