Re: Swapping to a large sparse file

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On Fri, 2015-01-16 at 13:08 -0700, jd1008 wrote:
> Can it be done?
> 
> So far, swapon says:
> swapon: /var/swapfile: skipping - it appears to have holes.
> ...
> Maybe the devs can have a look and see if they can modify the swapper to
> allow sparse swap files??
> 

There is a reason why it acts like it does.  The system would panic if
it tried and failed to allocate blocks when it needed them and the drive
was full.  The whole point is that swap is treated 'like ram, only
slower' and thus it is not prepared for it to be in a 'quantum' state
until the moment of actual use.

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