If you mean you were updating SUSE Manager 2's main server (which is based
on spacewalk), and if you were doing so via SLES media, that was probably
a bad idea. SUSE Manager is a software appliance, meaning you should only
do updates/upgrades via its own channels, not via external media.

Yes, you probably need to rebuild that thing, or better yet restore the
whole thing from a backup if available.

If you are using BtrFS for the root filesystem, you may be able to go back
to a prior snapshot, but doing that on SUSE Manager 2.x is likely not done
since it always went to ext-based filesystems by default, unfortunately.
SUSE Manager 3 is an add-on to SLES 12, so a lot more flexibility for how
a system is built now.

Good luck.

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