installer swap computation

[Chris Murphy]

https://git.fedorahosted.org/cgit/blivet.git/tree/blivet/devicelibs/swap.py

    elif 8192 <= mem < 65536:
        swap = mem / 2
    else:
        swap = 4096
   if hibernation:
        if mem <= 65536:
            swap = mem + swap

I interpret this to mean suggest swap would always be greater than RAM for a laptop (that of course has less than 64GB RAM). Yet on a laptop with 8GB RAM, swap is a sweak under 8GB. And on a laptop with 4GB RAM, swap is also just a squeak less than 4GB. Expected?

Another issue is that in both a VM, and on baremetal, I'm getting this message in storage.log:

Baremetal has 4GB RAM:
14:06:22,177 INFO blivet: Suggested swap size (3984 M) exceeds 10 % of disk space, using 10 % of disk space (0 M) instead.

VM has 1536MB RAM:
07:12:40,691 INFO blivet: Suggested swap size (3104 M) exceeds 10 % of disk space, using 10 % of disk space (0 M) instead.

Yet suggested swap size is what's used for the swap partition, not 0MB. Either it's a bug, or I'm confused.

Chris Murphy