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summary: core revert test
details: |
Older versions of snapd used to change the way seccomp profiles are handled, which could cause
problems when future snapd was reverted to old snapd, causing old profiles to
fail to parse and load. This was addressed with the introduction of a system
key and eventually with the switch to pre-compiled seccomp profiles. This
test uses a virtual machine to ensure that the core snap can be safely
reverted in case this is required for another reason.
systems: [ubuntu-18.04-64]
kill-timeout: 30m
environment:
IMAGE_FILE: $SNAPD_WORK_DIR/images/ubuntu-core-new.img
skip:
- reason: This test needs to start from beta/candidate/stable channel
if: |
[ "$NESTED_BUILD_SNAPD_FROM_CURRENT" = "true" ] || [ "$NESTED_CORE_CHANNEL" = "$NESTED_CORE_REFRESH_CHANNEL" ]
debug: |
systemctl stop nested-vm || true
if [ -f "$IMAGE_FILE" ]; then
loops=$(kpartx -avs "$IMAGE_FILE" | cut -d' ' -f 3)
part=$(echo "$loops" | tail -1)
tmp=$(mktemp -d)
mount "/dev/mapper/$part" "$tmp"
grep --text "hsearch_r failed for.* No such process" "$tmp/system-data/var/log/syslog"
umount "$tmp"
rm -rf "$tmp"
kpartx -ds "$IMAGE_FILE"
fi
execute: |
echo "Refresh the core snap to $NESTED_CORE_REFRESH_CHANNEL channel"
remote.exec "snap info core" | MATCH "tracking: +latest/${NESTED_CORE_CHANNEL}"
remote.exec "sudo snap refresh --${NESTED_CORE_REFRESH_CHANNEL} core" || true
if ! tests.nested wait-for ssh; then
echo "ssh connection not established, exiting..."
exit 1
fi
echo "Wait until the refresh is completed"
remote.exec "retry --wait 1 -n 180 --env NESTED_CORE_REFRESH_CHANNEL=$NESTED_CORE_REFRESH_CHANNEL sh -c 'snap changes | MATCH "Done.*Refresh \"core\" snap from \""${NESTED_CORE_REFRESH_CHANNEL}"\" channel"'"
remote.exec "snap info core" | MATCH "tracking: +latest/${NESTED_CORE_REFRESH_CHANNEL}"
echo "Precondition check, no refresh should be done here but the command shouldn't fail"
remote.exec "sudo snap refresh"
echo "Revert the core snap"
remote.exec "sudo snap revert core" || true
if ! tests.nested wait-for ssh; then
echo "ssh connection not established, exiting..."
exit 1
fi
echo "Wait until the revert is completed"
remote.exec "retry --wait 1 -n 180 sh -c 'snap changes" | MATCH "Done.*Revert \"core\" snap'"
echo "Check the revert was done properly"
remote.exec "snap info core" | MATCH "tracking: +latest/${NESTED_CORE_REFRESH_CHANNEL}"
remote.exec "ifconfig" | MATCH eth0
remote.exec "sudo snap refresh"
remote.exec "sudo cat /var/log/syslog" | NOMATCH "hsearch_r failed for.* No such process"
|
