Date: Mon, 20 Oct 2003 11:20:16 -0700 From: Tim Kientzle <kientzle@acm.org> To: "C. Kukulies" <kuku@www.kukulies.org> Cc: freebsd-current@freebsd.org Subject: Re: this /rescue thing Message-ID: <3F942760.8090706@acm.org> In-Reply-To: <200310200955.h9K9tvEt006047@www.kukulies.org> References: <200310200955.h9K9tvEt006047@www.kukulies.org>
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C. Kukulies wrote:
> /rescue is always causing trouble with me here. make world falls over
> with:
>
> ===> rescue/rescue
> install -s -o root -g wheel -m 555 rescue /rescue
> install -o root -g wheel -m 555 nextboot_FIXED /rescue/nextboot.sh
> install: /rescue/nextboot.sh: Not a directory
> *** Error code 71
>
> Stop in /u/src/rescue/rescue.
> *** Error code 1
>
> Looking into / I see that /rescue is a file.
>
> Why is this /rescue being created in /? It used to blow up and
> overflow the / filesystem (there were times when a 40 MB root FS was
> sufficient).
>
> What is the safe method to put /rescue elsewhere (in an area with enough
> space). It also seems that it is being deleted by make world, at least I
> seem to remember that putting a soft link into /rescue into / didn't
> help either.
Symlinking /rescue -> / will cause exactly the problem you're
seeing. (Because there is a file called /rescue/rescue, which
will then get installed on top of the symlink. Boom!) Don't do that.
You could probably symlink /rescue -> /usr/rescue, but that
sort of defeats the purpose.
/rescue is part of a plan to reduce the size of the / partition,
though it's a somewhat involved process. There are two key pieces:
1) Building /bin and /sbin dynamically. This is a big space
savings, but comes at a cost. Namely, it's a lot easier
to trash a dynamic /bin than the old static one.
2) /rescue contains a compact set of statically-linked executables
(about 3MB total) that are provided to help in system recovery
if /bin or /sbin gets damaged.
The catch, of course, is that step #2 needs to be finished first,
temporarily increasing the / partition size until #1 is done.
You have several options:
* Disable /rescue. Define NO_RESCUE to suppress it from
being built and installed, e.g.,
make -DNO_RESCUE buildworld
make -DNO_RESCUE installworld
Or add it to /etc/make.conf
* Take the plunge and compile /bin dynamically.
Define WITH_DYNAMICROOT in /etc/make.conf.
* Get a bigger hard disk. ;-)
Hope this helps,
Tim Kientzle
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