On Fri, Jan 27, 2017 at 12:30:17PM -0500, Allan Jude wrote:
> On 2017-01-27 12:05, Warner Losh wrote:
> > On Fri, Jan 27, 2017 at 12:34 AM, Toomas Soome <tso...@me.com> wrote:
> >>
> >>> On 27. jaan 2017, at 1:40, Ngie Cooper (yaneurabeya) 
> >>> <yaneurab...@gmail.com> wrote:
> >>>
> >>> Hi,
> >>>       I tried upgrading one of my workstations and unfortunately the 
> >>> freebsd-boot partition is too small (I follow manpage directions, 
> >>> exactly, and those seem to be too small as of 10.3-RELEASE timeframe), 
> >>> and I don???t have enough space or ability to resize the partition and 
> >>> make it bigger. So, I???m in need of a build knob to control the bloat, 
> >>> and/or having an alternative boot loader without geli/skein/crypto 
> >>> support compiled in. Would you be opposed to the work?
> >>> Thanks,
> >>> -Ngie
> >>
> >>
> >> I do agree that since the geli knob is already there, it may do. Of course 
> >> we also can think of additional knobs, but there is an issue - it wont 
> >> help just to exclude some files, the additional features also do sit in 
> >> the code, so the replacement stubs will be needed, also testing them all 
> >> over will take some time. And the preprocessor spaghetti really is nasty 
> >> thing to deal with;)
> >>
> >> And then there is another issue (partly why I did the feature support in 
> >> first place) - as the kernel does not block user from enabling the 
> >> features, the user can end up facing non-bootable setup which is also not 
> >> good, as user is using perfectly legal options, and still the whole thing 
> >> is just rendered unusable???
> > 
> > I'm curious why you can't find the space for a bigger partition?
> > Almost all drives these days are partitioned with a little wasted
> > space, and that wasted space should be more than enough to cover us
> > here. Also, most drives have a swap partition that can be shrunk a
> > trivial amount to get space for this...
> > 
> > Warner
> > 
> I need to do some testing to make a recipe that works for it, but the
> other option is to use the ZFS bootcode area.
> ZFS it self, reserves something like 3.5 mb of space in the ZFS
> partition, for boot code. This is how we boot ZFS on MBR.
> It should be possible to use this on GPT as well, we just don't.

In the future, maybe it'd be a good idea for the installer to leave
more space (a few MB, perhaps?) between the freebsd-boot and
freebsd-swap partitions? At least, for ZFS installs.


Shawn Webb
Cofounder and Security Engineer

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