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A Red Hat training course is available for Red Hat Enterprise Linux Downloading the contents from a storage volume

# vol-download --pool pool-or-uuid --offset bytes --length bytes vol-name-or-key-or-path local-file
This command command downloads the contents of local-file from a storage volume. It requires a --pool pool-or-uuid which is the name or UUID of the storage pool that the volume is in. It also requires vol-name-or-key-or-path which is the name or key or path of the volume to wipe. Using the option --offset dictates the position in the storage volume at which to start reading the data. --length length dictates an upper limit for the amount of data to be downloaded.