Actually, a test like this might be more illuminating, instead of the
academic a/b/c/d test:
mkdir http_root
mkdir http_root/current
mkdir http_root/current/bin
echo "stable" > http_root/current/bin/myapp
mkdir http_root/experimental
mkdir http_root/experimental/bin
echo "unstable" > http_root/experimental/bin/myapp
> snap create vol0 safetynet
mv http_root/current http_root/old
mv http_root/experimental http_root/current
Based on Jonathan's previous results, I predict the following, which IMHO,
is undesirable behavior:
(OH NO! My new version is unstable! I want to figure it out and go back to
my safetynet!)
cat http_root/.snapshot/safetynet/experimental/bin/myapp
cat: http_root/.snapshot/safetynet/experimental: Not a directory
cat http_root/.snapshot/safetynet/current/bin/myapp
unstable
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