podman/test/system/055-rm.bats
Valentin Rothberg e5ac28f3b9 container removal: handle already removed containers
Since commit d54478d8ea, a container's lock is released before
attempting to stop it via the OCI runtime.  This opened the window
for various kinds of race conditions.  One of them led to #9479 where
the removal+cleanup sequences of a `run --rm` session overlapped with
`rm -af`.  Make both execution paths more robust by handling the case of
an already removed container.

Fixes: #9479
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
2021-02-23 13:02:35 +01:00

78 lines
2.4 KiB
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#!/usr/bin/env bats -*- bats -*-
#
# tests for podman rm
#
load helpers
@test "podman rm" {
rand=$(random_string 30)
run_podman run --name $rand $IMAGE /bin/true
# Don't care about output, just check exit status (it should exist)
run_podman 0 inspect $rand
# container should be in output of 'ps -a'
run_podman ps -a
is "$output" ".* $IMAGE .*/true .* $rand" "Container present in 'ps -a'"
# Remove container; now 'inspect' should fail
run_podman rm $rand
run_podman 125 inspect $rand
}
@test "podman rm - running container, w/o and w/ force" {
run_podman run -d $IMAGE sleep 5
cid="$output"
# rm should fail
run_podman 2 rm $cid
is "$output" "Error: cannot remove container $cid as it is running - running or paused containers cannot be removed without force: container state improper" "error message"
# rm -f should succeed
run_podman rm -f $cid
}
@test "podman rm container from storage" {
if is_remote; then
skip "only applicable for local podman"
fi
rand=$(random_string 30)
run_podman create --name $rand $IMAGE /bin/true
# Create a container that podman does not know about
external_cid=$(buildah from $IMAGE)
# Plain 'exists' should fail, but should succeed with --external
run_podman 1 container exists $external_cid
run_podman container exists --external $external_cid
# rm should succeed
run_podman rm $rand $external_cid
}
@test "podman rm <-> run --rm race" {
# A container's lock is released before attempting to stop it. This opens
# the window for race conditions that led to #9479.
run_podman run --rm -d $IMAGE sleep infinity
run_podman rm -af
}
# I'm sorry! This test takes 13 seconds. There's not much I can do about it,
# please know that I think it's justified: podman 1.5.0 had a strange bug
# in with exit status was not preserved on some code paths with 'rm -f'
# or 'podman run --rm' (see also 030-run.bats). The test below is a bit
# kludgy: what we care about is the exit status of the killed container,
# not 'podman rm', but BATS has no provision (that I know of) for forking,
# so what we do is start the 'rm' beforehand and monitor the exit status
# of the 'sleep' container.
#
# See https://github.com/containers/podman/issues/3795
@test "podman rm -f" {
rand=$(random_string 30)
( sleep 3; run_podman rm -f $rand ) &
run_podman 137 run --name $rand $IMAGE sleep 30
}
# vim: filetype=sh