[PROPOSAL] GEOM probing/tasting firewall

[Peter Grehan]

>    For first time this idea was formulated in Jabber talk with friend of
>   mine, who uses FreeBSD for massive iSCSI hosting on ZVOLs. He has problems
>   with tasting these ZVOLs, which contain different types of data (Windows
>   disks, Linux disks, FreeBSD disks, etc). Here are label conflicts, strange
>   messages about corrupted GPTs, etc. So, it looks like to have configurable
>   way to prevent some GEOM tasting is good idea.

  I'm all for this. bhyve has the exact same problem with unnecessary 
tasting of zvols and raw volumes being used by guest o/s's.

later,

Peter.