Subject: bug#17149: shred - tape data

From: Rupert Russell <[email-masked]>
Date: Mon, 31 Mar 2014 11:00:40 +0000

Hi,

shred -v /dev/st0    # where /dev/st0 is the drive in a multi tape carousel.

This starts well with.
Pass 1/4 (random) 15MiB
Pass 1/4 (random) 41MiB
Pass 1/4 (random) 70MiB
Pass 1/4 (random).....etc

But when the end of a 200GiB tape is reached in pass 1, 'shred' doesn't appear to trigger a rewind or maybe wait for the tape to be rewound before attempting to overwrite the data.

The final messages before and around the error are:-

Pass 1/4 (random) 190GiB/190GiB  100%

Pass 2/4 (random)

Error writing at offset 1288. No space left on device.

(The next line in my script then runs and unloads the tape.)

Is this not rewinding the tape a bug or my mis-use of the 'shred' command?

Thanks

Rupert Russell
OPERATIONS MANAGER

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