Don't bother user code with LVM RAID meta data
Don't bother user code with LVM RAID meta data

RAID LVs have/need one extent big internal meta data LVs. Instead of bothering
the user code with this, let's just make the RAID LVs one extent smaller than
requested and use that space for the meta data.

Also reserve the space for the 'mirror' segment type which is a different
implementation of RAID1 in Device Mapper.

rhinstaller/blivet,AdamWill/blivet,vojtechtrefny/blivet,AdamWill/blivet,vpodzime/blivet,rvykydal/blivet,vojtechtrefny/blivet,rvykydal/blivet,rhinstaller/blivet,vpodzime/blivet,jkonecny12/blivet,jkonecny12/blivet