In my Amazon EC2 instance I have the following:

     ubuntu@ip-333-31-16-230:~$ df -h
    Filesystem       Size  Used Avail Use% Mounted on
    udev              79G     0   79G   0% /dev
    tmpfs             16G  8.8M   16G   1% /run
    /dev/xvda1       985G  136G  809G  15% /
    tmpfs             79G     0   79G   0% /dev/shm
    tmpfs            5.0M     0  5.0M   0% /run/lock
    tmpfs             79G     0   79G   0% /sys/fs/cgroup
    tmpfs             16G     0   16G   0% /run/user/1000
    bar-something  1.0P     0  1.0P   0% /home/ubuntu/bar-something-data
    bar-foolishbrat  1.0P     0  1.0P   0% /home/ubuntu/bar-foolishbrat-data

The last two file system `bar-bi` and `bar-foolishbrat` are Amazon S3 bucket
<https://aws.amazon.com/documentation/s3/>,
mounted with the following command:


    /home/ubuntu/go/bin/goofys bar-foolishbrat bar-foolishbrat-data
    /home/ubuntu/go/bin/goofys bar-somehting bar-something-data
    # Here we use Goofys. It can be achieved also with S3FS.

Now I have no problem doing this using Samtools, in my instance


    samtools view -h ~/bar-something-data/myfile.bam > test.sam

That is writing the SAM file in my instance file system. But when I do
this, namely writing to the mounted S3:


    samtools view -h ~/bar-something-data/myfile.bam >
~/bar-something-data/test.sam


It gave the following error:


    samtools: writing to standard output failed: Invalid argument
    samtools: error closing standard output: -1

How can I resolve this issue?

Regards,
G.V.
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