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[ubuntu] How to expand encrypted swap?

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Folks,

When I installed Ubuntu 12.04 LTS on this laptop I agreed to the suggestion that the swap should be encrypted. The CPU is fast enough for this not to be a performance issue etc etc.

However, shortly afterwards (!) I upgraded the RAM, which had a noticeable improvement in performance, as expected, but now the machine has well below the optimum swap space available. I prefer the UNIX guide of swap=2.5*RAM but would be happy with 2*RAM. I now have 1*RAM and I am not happy with that.

I cannot find out how to increase the size of the encrypted swap file.

Help please.

Best Regards

Ian

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