Bug in bsdinstall (fs found where not present)

[Nathan Whitehorn]

On 08/29/13 14:04, Warren Block wrote:
>> From a 9.2-PRERELEASE snapshot, go into the shell, create a GPT disk 
> layout with a bunch of partitions for filesystems and swap.  Exit the
> shell and run the installer.
>
> Go through each partition setting a mount point.  Tell bsdinstall to
> continue.  It reports that the / partition has a preexisting
> filesystem (it does not, in fact; this disk had a mishmash of MBR and
> NTFS on it).
>
> Tell bsdinstall to continue anyway.  It does, and then reports that it
> can't mount /dev/ada0p2 on /mnt, presumably because, contrary to the
> misleading and incorrect error message, there is no filesystem on there.
>
> The install fails, try again, entering all the mount points, and it
> will fail the same.
>
> Short term solution: newfs the / partition, so there really is a
> filesystem there for bsdinstall to detect and warn about.  Then it works.

bsdinstall has no way to detect whether or not you already have UFS in a
freebsd-ufs file system. It assumes, when not given contrary
information, that a partition that exists is initialized. There does not
seem to be a way around this. If you have any ideas, those would of
course be helpful.
-Nathan