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authorEd Santiago <santiago@redhat.com>2020-05-12 14:29:03 -0600
committerEd Santiago <santiago@redhat.com>2020-05-12 14:43:17 -0600
commit3ec335bc9f8e42ed23b65403a222645ee339e6fe (patch)
tree0f79596355eee1522aa9011ce4961c3d5b4ed44a /test/system/160-volumes.bats
parent5b4e91db73a80f31f67b7c28832527e64b074b74 (diff)
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system tests: add volume tests
Signed-off-by: Ed Santiago <santiago@redhat.com>
Diffstat (limited to 'test/system/160-volumes.bats')
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+#!/usr/bin/env bats -*- bats -*-
+#
+# podman volume-related tests
+#
+
+load helpers
+
+function setup() {
+ basic_setup
+
+ run_podman '?' volume rm -a
+}
+
+function teardown() {
+ run_podman '?' rm -a --volumes
+ run_podman '?' volume rm -a -f
+
+ basic_teardown
+}
+
+
+# Simple volume tests: share files between host and container
+@test "podman run --volumes : basic" {
+ skip_if_remote "volumes cannot be shared across hosts"
+
+ # Create three temporary directories
+ vol1=${PODMAN_TMPDIR}/v1_$(random_string)
+ vol2=${PODMAN_TMPDIR}/v2_$(random_string)
+ vol3=${PODMAN_TMPDIR}/v3_$(random_string)
+ mkdir $vol1 $vol2 $vol3
+
+ # In each directory, write a random string to a file
+ echo $(random_string) >$vol1/file1_in
+ echo $(random_string) >$vol2/file2_in
+ echo $(random_string) >$vol3/file3_in
+
+ # Run 'cat' on each file, and compare against local files. Mix -v / --volume
+ # flags, and specify them out of order just for grins. The shell wildcard
+ # expansion must sort vol1/2/3 lexically regardless.
+ v_opts="-v $vol1:/vol1:z --volume $vol3:/vol3:z -v $vol2:/vol2:z"
+ run_podman run --rm $v_opts $IMAGE sh -c "cat /vol?/file?_in"
+
+ for i in 1 2 3; do
+ eval voldir=\$vol${i}
+ is "${lines[$(($i - 1))]}" "$(< $voldir/file${i}_in)" \
+ "contents of /vol${i}/file${i}_in"
+ done
+
+ # Confirm that container sees vol1 as a mount point
+ run_podman run --rm $v_opts $IMAGE mount
+ is "$output" ".* on /vol1 type .*" "'mount' in container lists vol1"
+
+ # Have the container do write operations, confirm them on host
+ out1=$(random_string)
+ run_podman run --rm $v_opts $IMAGE sh -c "echo $out1 >/vol1/file1_out;
+ cp /vol2/file2_in /vol3/file3_out"
+ is "$(<$vol1/file1_out)" "$out1" "contents of /vol1/file1_out"
+ is "$(<$vol3/file3_out)" "$(<$vol2/file2_in)" "contents of /vol3/file3_out"
+
+ # Writing to read-only volumes: not allowed
+ run_podman 1 run --rm -v $vol1:/vol1ro:z,ro $IMAGE sh -c "touch /vol1ro/abc"
+ is "$output" ".*Read-only file system" "touch on read-only volume"
+}
+
+
+# Named volumes
+@test "podman volume create / run" {
+ myvolume=myvol$(random_string)
+ mylabel=$(random_string)
+
+ # Create a named volume
+ run_podman volume create --label l=$mylabel $myvolume
+ is "$output" "$myvolume" "output from volume create"
+
+ # Confirm that it shows up in 'volume ls', and confirm values
+ run_podman volume ls --format json
+ tests="
+Name | $myvolume
+Driver | local
+Labels.l | $mylabel
+"
+ parse_table "$tests" | while read field expect; do
+ actual=$(jq -r ".[0].$field" <<<"$output")
+ is "$actual" "$expect" "volume ls .$field"
+ done
+
+ # Run a container that writes to a file in that volume
+ mountpoint=$(jq -r '.[0].Mountpoint' <<<"$output")
+ rand=$(random_string)
+ run_podman run --rm --volume $myvolume:/vol $IMAGE sh -c "echo $rand >/vol/myfile"
+
+ # Confirm that the file is visible, with content, outside the container
+ is "$(<$mountpoint/myfile)" "$rand" "we see content created in container"
+
+ # Clean up
+ run_podman volume rm $myvolume
+}
+
+
+# Running scripts (executables) from a volume
+@test "podman volume: exec/noexec" {
+ myvolume=myvol$(random_string)
+
+ run_podman volume create $myvolume
+ is "$output" "$myvolume" "output from volume create"
+
+ run_podman volume inspect --format '{{.Mountpoint}}' $myvolume
+ mountpoint="$output"
+
+ # Create a script, make it runnable
+ rand=$(random_string)
+ cat >$mountpoint/myscript <<EOF
+#!/bin/sh
+echo "got here -$rand-"
+EOF
+ chmod 755 $mountpoint/myscript
+
+ # By default, volumes are mounted noexec. This should fail.
+ run_podman 126 run --rm --volume $myvolume:/vol:z $IMAGE /vol/myscript
+ is "$output" ".* OCI runtime permission denied.*" "run on volume, noexec"
+
+ # With exec, it should pass
+ run_podman run --rm -v $myvolume:/vol:z,exec $IMAGE /vol/myscript
+ is "$output" "got here -$rand-" "script in volume is runnable with exec"
+
+ # Clean up
+ run_podman volume rm $myvolume
+}
+
+
+# Anonymous temporary volumes, and persistent autocreated named ones
+@test "podman volume, implicit creation with run" {
+
+ # No hostdir arg: create anonymous container with random name
+ rand=$(random_string)
+ run_podman run -v /myvol $IMAGE sh -c "echo $rand >/myvol/myfile"
+
+ run_podman volume ls -q
+ tempvolume="$output"
+
+ # We should see the file created in the container
+ run_podman volume inspect --format '{{.Mountpoint}}' $tempvolume
+ mountpoint="$output"
+ test -e "$mountpoint/myfile"
+ is "$(< $mountpoint/myfile)" "$rand" "file contents, anonymous volume"
+
+ # Remove the container, using rm --volumes. Volume should now be gone.
+ run_podman rm -a --volumes
+ run_podman volume ls -q
+ is "$output" "" "anonymous volume is removed after container is rm'ed"
+
+ # Create a *named* container. This one should persist after container ends
+ myvol=myvol$(random_string)
+ rand=$(random_string)
+
+ run_podman run --rm -v $myvol:/myvol:z $IMAGE \
+ sh -c "echo $rand >/myvol/myfile"
+ run_podman volume ls -q
+ is "$output" "$myvol" "autocreated named container persists"
+
+ # ...and should be usable, read/write, by a second container
+ run_podman run --rm -v $myvol:/myvol:z $IMAGE \
+ sh -c "cp /myvol/myfile /myvol/myfile2"
+
+ run_podman volume rm $myvol
+
+ # Autocreated volumes should also work with keep-id
+ # All we do here is check status; podman 1.9.1 would fail with EPERM
+ myvol=myvol$(random_string)
+ run_podman run --rm -v $myvol:/myvol:z --userns=keep-id $IMAGE \
+ touch /myvol/myfile
+
+ run_podman volume rm $myvol
+}
+
+
+# Confirm that container sees the correct id
+@test "podman volume with --userns=keep-id" {
+ is_rootless || skip "only meaningful when run rootless"
+
+ myvoldir=${PODMAN_TMPDIR}/volume_$(random_string)
+ mkdir $myvoldir
+ touch $myvoldir/myfile
+
+ # With keep-id
+ run_podman run --rm -v $myvoldir:/vol:z --userns=keep-id $IMAGE \
+ stat -c "%u:%s" /vol/myfile
+ is "$output" "$(id -u):0" "with keep-id: stat(file in container) == my uid"
+
+ # Without
+ run_podman run --rm -v $myvoldir:/vol:z $IMAGE \
+ stat -c "%u:%s" /vol/myfile
+ is "$output" "0:0" "w/o keep-id: stat(file in container) == root"
+}
+
+
+# 'volume prune' identifies and cleans up unused volumes
+@test "podman volume prune" {
+ # Create four named volumes
+ local -a v=()
+ for i in 1 2 3 4;do
+ vol=myvol${i}$(random_string)
+ v[$i]=$vol
+ run_podman volume create $vol
+ done
+
+ # Run two containers: one mounting v1, one mounting v2 & v3
+ run_podman run --name c1 --volume ${v[1]}:/vol1 $IMAGE date
+ run_podman run --name c2 --volume ${v[2]}:/vol2 -v ${v[3]}:/vol3 \
+ $IMAGE date
+
+ # prune should remove v4
+ run_podman volume prune --force
+ is "$output" "${v[4]}" "volume prune, with 1, 2, 3 in use, deletes only 4"
+
+ # Remove the container using v2 and v3. Prune should now remove those.
+ # The 'echo sort' is to get the output sorted and in one line.
+ run_podman rm c2
+ run_podman volume prune --force
+ is "$(echo $(sort <<<$output))" "${v[2]} ${v[3]}" \
+ "volume prune, after rm c2, deletes volumes 2 and 3"
+
+ # Remove the final container. Prune should now remove v1.
+ run_podman rm c1
+ run_podman volume prune --force
+ is "$output" "${v[1]}" "volume prune, after rm c2 & c1, deletes volume 1"
+
+ # Further prunes are NOPs
+ run_podman volume prune --force
+ is "$output" "" "no more volumes to prune"
+}
+
+
+# vim: filetype=sh