Turbo Frequently Asked Questions

How do I make changes to a volume?

To change your Turbo volume attributes, such as size and shortcode, or if you want to delete your volume, submit a ticket to [email protected]; they will help you make those changes.  

Potential Data Loss Issues with using Ubuntu 24.04

Files written to a Turbo volume mounted on an Ubuntu 24.04 host using NFSv4.1 or NFSv4.2 may result in errors and data corruption if basic options are used without being specified. 

If you are using Ubuntu 24.04 on a desktop or laptop and are using Turbo to store your research data, you have two options:

  1. If you would like to leverage modern features of NFS in 4.1 or 4.2, you should use the following mount options:

    $mount -t nfs -o vers=4 -o wsize=1047532 <turbo_mount_path> <path on your computer>

  2. If you are ok with using older versions of NFS (NFS version 4.0 or version 3), use:

    $mount -t nfs -o vers=3 <turbo_mount_path> <path on your computer>

The problem with Ubuntu 24 stems from NFSv4.1+ writes to Turbo with sizes of a full mebibyte (1048576 bytes) ending up written as all null bytes, and this is the default on Ubuntu 24.

RHEL8/RHEL9/Ubuntu22.04 do not have this problem because they default to a write size of less than a mebibyte.  Linux distributions running kernel versions greater than 6.x.x should be tested for this bug before using the default options, as we cannot guarantee they will work correctly without the mount commands above.  You can test with the following commands:

$cp /bin/bash /nfs/turbo/myvol

$sum /bin/bash /nfs/turbo/myvol/bash

$od /nfs/turbo/myvol/bash | head -5