CI: test zfs

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

.cirrus.yml

@@ -112,6 +112,8 @@ ubuntu_testing_task: &ubuntu_testing
             TEST_DRIVER: "fuse-overlay-whiteout"
         - env:
             TEST_DRIVER: "btrfs"
+        - env:
+            TEST_DRIVER: "zfs"
 
 
 lint_task:

contrib/cirrus/build_and_test.sh

@@ -51,6 +51,26 @@ case $TEST_DRIVER in
         mount -o loop $GOSRC/$TEST_DRIVER.img $tmpdir
         TMPDIR="$tmpdir" showrun make STORAGE_DRIVER=$TEST_DRIVER local-test-integration local-test-unit
         ;;
+    zfs)
+        # Ubuntu: install zfsutils-linux
+        if ! check_filesystem_supported $TEST_DRIVER ; then
+            die "This CI VM does not support $TEST_DRIVER in its kernel"
+        fi
+        if test -z "$(which zpool 2> /dev/null)" ; then
+            die "This CI VM does not have zpool installed"
+        fi
+        if test -z "$(which zfs 2> /dev/null)" ; then
+            die "This CI VM does not have zfs installed"
+        fi
+        tmpfile=$(mktemp -p $GOSRC)
+        truncate -s 0 $tmpfile
+        fallocate -l 1G $tmpfile
+        zpool=$(basename $tmpfile)
+        zpool create $zpool $tmpfile
+        trap "zfs destroy -Rf $zpool/tmp; zpool destroy -f $zpool; rm -f $tmpfile" EXIT
+        zfs create $zpool/tmp
+        TMPDIR="/$zpool/tmp" showrun make STORAGE_DRIVER=$TEST_DRIVER local-test-integration local-test-unit
+        ;;
     *)
         die "Unknown/Unsupported \$TEST_DRIVER=$TEST_DRIVER (see .cirrus.yml and $(basename $0))"
         ;;

contrib/cirrus/setup.sh

@@ -20,7 +20,7 @@ case "$OS_RELEASE_ID" in
         [[ -z "$DEBS_CONFLICTING" ]] || \
             $SHORT_APTGET -q remove $DEBS_CONFLICTING
         $SHORT_APTGET -q update
-        $SHORT_APTGET -q install zstd
+        $SHORT_APTGET -q install zstd zfsutils-linux
         ;;
     *)
         bad_os_id_ver