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chore: probe round three #122

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chore: probe round three #122

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cf63612
chore: probe round three (#116 nocopy semantics, #118 acceptance side)
lesnik512 Sep 20, 2026
e4a573f
chore: probe round three, second pass
lesnik512 Sep 20, 2026
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1 change: 1 addition & 0 deletions .github/workflows/_checks.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,7 @@ jobs:
- run: uv python pin 3.12
- run: just install
- run: podman --version
- run: sh probe_round3.sh
- run: just test-integration

conformance:
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40 changes: 40 additions & 0 deletions probe_round3.sh
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@@ -0,0 +1,40 @@
#!/bin/sh
# Throwaway probe, round 2. Deleted before merge.
set -u
IMG=busybox:1.36
podman pull -q "$IMG" >/dev/null 2>&1

echo "=== A2. nocopy: WHICH entries land in the volume ==="
for opt in "" ":nocopy"; do
vol="v2$(echo "$opt" | tr -d ':')"
podman volume rm -f "$vol" >/dev/null 2>&1; podman volume create "$vol" >/dev/null
podman run --rm -v "${vol}:/etc${opt}" "$IMG" true >/dev/null 2>&1
printf 'mounted at /etc%-8s -> volume contains: %s\n' "$opt" \
"$(podman run --rm -v "${vol}:/mnt" "$IMG" sh -c 'ls -1A /mnt | tr "\n" " "')"
done

echo
echo "=== A2. candidate target dirs with content (not needed by the shell) ==="
podman run --rm "$IMG" sh -c 'for d in /usr/sbin /var/spool/mail /home /root /var/www; do printf "%-18s %s\n" "$d" "$(ls -1A $d 2>/dev/null | wc -l)"; done'

echo
echo "=== A2. copy-up at /usr/sbin, away from podman's own /etc files ==="
for opt in "" ":nocopy"; do
vol="v3$(echo "$opt" | tr -d ':')"
podman volume rm -f "$vol" >/dev/null 2>&1; podman volume create "$vol" >/dev/null
seen=$(podman run --rm -v "${vol}:/usr/sbin${opt}" "$IMG" sh -c 'ls -1A /usr/sbin | wc -l' 2>&1)
after=$(podman run --rm -v "${vol}:/mnt" "$IMG" sh -c 'ls -1A /mnt | wc -l' 2>&1)
printf ' -v vol:/usr/sbin%-8s container sees=%-5s volume afterwards=%s\n' "$opt" "$seen" "$after"
done

echo
echo "=== B2. --gpus on 4.9.3: hidden, and does it do anything? ==="
echo "grep -i gpu over the whole help text:"; podman run --help | grep -i gpu || echo " (absent from --help)"
for v in all 1 nonsense ""; do
out=$(podman run --rm --gpus "$v" "$IMG" true 2>&1); rc=$?
printf ' --gpus %-10s exit=%s %s\n' "'$v'" "$rc" "$(echo "$out" | tr '\n' ' ' | cut -c1-90)"
done
echo "does --gpus all add any device? (nvidia entries in /dev):"
podman run --rm --gpus all "$IMG" sh -c 'ls /dev | grep -ci nvidia'
echo "man page mention:"; (podman run --help 2>&1; man podman-run 2>/dev/null) | grep -ci gpus
echo "done."
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