tests: add test of Direct I/O support in the Unix I/O manager

This test requires root, and only works on Linux systems.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2 files changed, 105 insertions, 0 deletions

diff --git a/tests/u_direct_io/expect b/tests/u_direct_io/expect
new file mode 100644
index 000000000..b0cdc7302
--- /dev/null
+++ b/tests/u_direct_io/expect
@@ -0,0 +1,61 @@
+mke2fs -F -o Linux -t ext4 -O ^metadata_csum,^uninit_bg -D $LOOP
+Creating filesystem with 32768 4k blocks and 32768 inodes
+
+Allocating group tables:    done                            
+Writing inode tables:    done                            
+Creating journal (4096 blocks): done
+Writing superblocks and filesystem accounting information:    done
+
+debugfs -D -R stats $LOOP
+Filesystem volume name:   <none>
+Last mounted on:          <not available>
+Filesystem magic number:  0xEF53
+Filesystem revision #:    1 (dynamic)
+Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file dir_nlink extra_isize
+Default mount options:    (none)
+Filesystem state:         clean
+Errors behavior:          Continue
+Filesystem OS type:       Linux
+Inode count:              32768
+Block count:              32768
+Reserved block count:     1638
+Overhead clusters:        5131
+Free blocks:              27631
+Free inodes:              32757
+First block:              0
+Block size:               4096
+Fragment size:            4096
+Reserved GDT blocks:      7
+Blocks per group:         32768
+Fragments per group:      32768
+Inodes per group:         32768
+Inode blocks per group:   1024
+Flex block group size:    16
+Mount count:              0
+Check interval:           15552000 (6 months)
+Reserved blocks uid:      0
+Reserved blocks gid:      0
+First inode:              11
+Inode size:	          128
+Journal inode:            8
+Default directory hash:   half_md4
+Journal backup:           inode blocks
+Directories:              2
+ Group  0: block bitmap at 9, inode bitmap at 25, inode table at 41
+           27631 free blocks, 32757 free inodes, 2 used directories
+e2fsck -fn -N test_filesys $LOOP
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 11/32768 files (9.1% non-contiguous), 5137/32768 blocks
+Exit status is 0
+e2fsck -fn -N test_filesys $TMPFILE
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 11/32768 files (9.1% non-contiguous), 5137/32768 blocks
+Exit status is 0
diff --git a/tests/u_direct_io/script b/tests/u_direct_io/script
new file mode 100644
index 000000000..0b5d70830
--- /dev/null
+++ b/tests/u_direct_io/script
@@ -0,0 +1,44 @@
+DESCRIPTION="direct I/O in unix_io"
+OUT=$test_name.log
+if test "$(id -u)" -ne 0 ; then
+    echo "$test_name: $DESCRIPTION: skipped (not root)"
+elif ! command -v losetup >/dev/null ; then
+    echo "$test_name: $DESCRIPTION: skipped (no losetup)"
+elif test ! -x $DEBUGFS_EXE; then
+    echo "$test_name: $DESCRIPTION: skipped (no debugfs)"
+else
+    dd if=/dev/zero of=$TMPFILE bs=1M count=128 > /dev/null 2>&1
+    LOOP=$(losetup --show --sector-size 4096 -f $TMPFILE)
+    echo mke2fs -F -o Linux -t ext4 -O ^metadata_csum,^uninit_bg -D \$LOOP > $OUT
+    $MKE2FS -F -o Linux -t ext4 -O ^metadata_csum,^uninit_bg -D $LOOP 2>&1 | \
+	sed -f $cmd_dir/filter.sed >> $OUT
+
+    echo debugfs -D -R stats \$LOOP >> $OUT
+    $DEBUGFS -D -R stats $LOOP 2>&1 | sed -f $cmd_dir/filter.sed >> $OUT
+
+    echo e2fsck -fn -N test_filesys \$LOOP > $OUT.new
+    $FSCK -fn -N test_filesys $LOOP >> $OUT.new 2>&1
+    echo Exit status is $? >> $OUT.new
+    sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
+    rm -f $OUT.new
+
+    losetup -d $LOOP
+
+    echo e2fsck -fn -N test_filesys \$TMPFILE > $OUT.new
+    $FSCK -fn -N test_filesys $TMPFILE >> $OUT.new 2>&1
+    echo Exit status is $? >> $OUT.new
+    sed -f $cmd_dir/filter.sed $OUT.new >> $OUT
+    rm -f $OUT.new
+
+    cmp -s $test_name.log $test_dir/expect
+
+    if [ "$?" -eq 0 ]; then
+	echo "$test_name: $DESCRIPTION: ok"
+	touch $test_name.ok
+    else
+	echo "$test_name: $DESCRIPTION: failed"
+	diff $DIFF_OPTS $test_dir/expect $test_name.log >> $test_name.failed
+    fi
+fi
+
+unset LOOP