DragonFlyBSD

:Today I expanded my root hammer fs by a second device. The expand went
:flawless and except for some bogus numbers in df everything was fine.
:
:Problems began when I rebooted the machine: I ended up in a unusable
:system. I could not get mountroot to use the multi device hammer fs.
:
:So we should either have (sorted by ascending coolness):
:
:1) have a FAT warning in hammer man page to not expand the root file system
:
:2) have hammer expand check and refuse to expand the root file system
:
:3) have a mountroot that can handle multi device hammer fs roots.
:
:Jan

Yah.  I will add a check to the 'hammer expand' command itself and
    have it refuse to expand the filesystem if it is also the root
    filesystem.

-Matt
                    Matthew Dillon 
                    <dillon@backplane.com>

Fixed in commit 104cb849cad1c21c8929f73d7654e16c4fb8a268