Using a size attribute with percentage value bombs volume_extend

[donovanmuller]

If you configure a volume size attribute using the percentage of the size of the volume group.
I.e. 50%VG

it bombs volume_extend recipe because there's no regex match.

[andyrepton]

Hmm, I didn't really plan on having percentage functionality, especially as the volume groups could theoretically be different sizes. This also is why we rely on the user to ensure there is enough free space available in the volume group for their logical volumes.

I'll have a think about how this could be implemented, thanks for the feature request :)