grub-fs-tester: improve squash4 tests

1. Make sure files are not multiple of block size. This will ensure tail packing
for squash4 and may also trigger more codes paths in other filesystems.

2. Call mksquashfs with -always-use-fragments to force tail packing.

diff --git a/tests/util/grub-fs-tester.in b/tests/util/grub-fs-tester.in
index f363d6f..2337771 100644 (file)
--- a/tests/util/grub-fs-tester.in
+++ b/tests/util/grub-fs-tester.in
@@ -913,6 +913,9 @@ for ((LOGSECSIZE=MINLOGSECSIZE;LOGSECSIZE<=MAXLOGSECSIZE;LOGSECSIZE=LOGSECSIZE +
                *)
                    BLOCKCNT=5242880;;
            esac
+           # Make sure file is not exact multiple of block size. This helps to force
+           # tail packing in case of squash4.
+           : $((BLOCKCNT--))
            case x"$fs" in
                x"ntfscomp")
                    setfattr -h -v 0x00000800 -n system.ntfs_attrib_be "$MNTPOINTRW/$OSDIR";;
@@ -998,8 +1001,8 @@ for ((LOGSECSIZE=MINLOGSECSIZE;LOGSECSIZE<=MAXLOGSECSIZE;LOGSECSIZE=LOGSECSIZE +
                x"romfs")
                    genromfs -V "$FSLABEL" -f "${FSIMAGES[0]}" -d "$MASTER" ;;
                xsquash4_*)
-                   echo mksquashfs "$MASTER" "${FSIMAGES[0]}" -comp "${fs/squash4_/}" -b $BLKSIZE
-                   mksquashfs "$MASTER" "${FSIMAGES[0]}" -comp "${fs/squash4_/}" -b $BLKSIZE ;;
+                   echo mksquashfs "$MASTER" "${FSIMAGES[0]}" -always-use-fragments -comp "${fs/squash4_/}" -b $BLKSIZE
+                   mksquashfs "$MASTER" "${FSIMAGES[0]}" -always-use-fragments -comp "${fs/squash4_/}" -b $BLKSIZE ;;
                x"bfs")
                    sleep 1
                    fusermount -u "$MNTPOINTRW"