mkswap fails to use more than 2GiB and doesn't recognize LVM

[Florian Pritz <bluewind@xxxxxxx>]

Hi,

I'm running util-linux 2.19.1 with a x86_64 linux 3.0.1 on Arch Linux.

mkswap displays the following output when trying to create swap on a
8GiB logical volume.
> # mkswap /dev/mapper/vg_brynhild-swap
> mkswap: warning: truncating swap area to 2097144 KiB
> mkswap: /dev/mapper/vg_brynhild-swap: warning: don't erase bootbits sectors
>         on whole disk. Use -f to force.
> Setting up swapspace version 1, size = 2097140 KiB
> no label, UUID=5eae2d8b-f664-46f5-983c-bdcd4301fa66

I tried adding -p 8589934592 to force 8GiB, but that doesn't change
anything.

It also fails to see that we are using LVM so this is not a real device
and we won't overwrite any boot sectors.

busybox mkswap crates the expected 8GiB swap, so I think this is a bug.

-- 
Florian Pritz

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