btrfs-progs: tests: extend fsck/028 to test fix-device-size and mount

Signed-off-by: David Sterba <dsterba@suse.com>

tests/fsck-tests/028-unaligned-super-dev-sizes/test.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+#
+# An image with mis-aligned superblock total_bytes, that will be found and
+# fixed by 'check' or fixed by 'rescue fix-device-size'
+
+source "$TOP/tests/common"
+
+check_prereq btrfs
+prepare_test_dev
+setup_root_helper
+
+check_all_images
+
+image=$(extract_image "./dev_and_super_mismatch_unaligned.raw.xz")
+
+# detect and fix
+run_check "$TOP/btrfs" rescue fix-device-size "$image"
+# no problem found
+run_check "$TOP/btrfs" rescue fix-device-size "$image"
+# check if fix-device-size worked
+run_check "$TOP/btrfs" check "$image"
+# mount test
+run_check_mount_test_dev
+run_check_umount_test_dev
+
+rm -f "$image"