[Fwd: How To Recover From Missing /lib/libc.so.7?]

[Chris Ruiz]

On Fri, Aug 7, 2009 at 1:51 PM, Drew Tomlinson<drew at mykitchentable.net> wrote:
> Boris Kochergin wrote:
>> Drew Tomlinson wrote:
>>> I was running FreeBSD8.0-BETA2 amd64 and attempted to upgrade with
>>> current sources as of yesterday (8/6/09). I successfully built world and
>>> kernel, and installed the kernel. However when I attempted to install
>>> world, I got this error:
>>>
>>> ===> lib/libc (install)
>>> install -C -o root -g wheel -m 444   libc.a /usr/lib
>>> install -C -o root -g wheel -m 444   libc_p.a /usr/lib
>>> install -s -o root -g wheel -m 444   -fschg -S  libc.so.7 /lib
>>> install: /lib/libc.so.7: chflags: Invalid argument
>>> *** Error code 71
>>>
>>> Stop in /usr/src/lib/libc.
>>> *** Error code 1
>>>
>>>
>>> And now I can't do anything as every command fails with:
>>>
>>> /libexec/ld-elf.so.1: Shared object "libc.so.7" not found
>>>
>>> How can I recover from this error?
>>>
>>> Thanks,
>>>
>>> Drew
>>>
>>>
>> There are statically-linked versions of essential utilities in
>> /rescue/. For example, you can use /rescue/mount_nfs to mount an NFS
>> server with the files you need, then /rescue/cp to copy them to your
>> system.
>
> Thanks for the reply.  As I mentioned in my reply to Jakob Lach, I
> really have no business running -CURRENT but loaded BETA2 because the
> release is expected soon.
>
> So basically I have the rescue tools and the BETA2 cd.  Can I just mount
> the BETA2 CD, search for libc.so.7, can copy it to /lib?  Will that give
> me enough to attempt grabbing updated sources and trying again.  Or
> should I just somehow install world from the BETA2 CD and move
> /boot/kernel.old back to /boot/kernel?  If so, how?

You must specify NO_FSCHG= when you installworld on an unupgraded ZFS
filesystem, otherwise you will lose libc.so.7!  I'll spare you the
details on why this happens.

Here's a quick fix:

#/rescue/cp /usr/obj/usr/src/lib/libc/libc.so.7 /lib

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