Re: Reclaim disk space doesn't reuse existing swap, should it?

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Probably not.  There are too many possibilities to make reasonable any
default except "do what the user explicitly says is desired".

The usual problems are hot-swap devices (USB, ESATA, etc.) that may be
present during installation but not later, and swap spaces intended for
other operating systems than the one currently being installed.

It seems prudent to have the installer perform mkswap on any spaces the
user identifies for use by this installed system, but mkswap will destroy
data in a swap space in use by another (perhaps hibernating) system.

Swapon will not activate any swap space it perceives as in use.  With
several operating systems "sharing" a swap space, it is easy to imagine
one system does not shut down cleanly, and this swap space is then not
used for months, even years, until someone fixes the problem or a new
installation performs mkswap.

There are cases where shared swap spaces may make sense.  I think
these are more appropriate to set up after installation, with edits to
/etc/fstab, than with additional complexity in the system installer.
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