/^ Checksum /d
s/, csum 0x\([0-9a-f]*\)//g
s/ csum 0x\([0-9a-f]*\)//g
+/^Checksum:/d
Desired extra isize: 28
Default directory hash: half_md4
Checksum type: crc32c
-Checksum: 0x3a9935ab
Journal checksum type: crc32c
Journal checksum: 0x661e816f
Journal features: journal_64bit journal_checksum_v3
--- /dev/null
+tune2fs ^metadata_csum test
+Creating filesystem with 524288 1k blocks and 65536 inodes
+Superblock backups stored on blocks:
+ 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
+
+Allocating group tables: \b\b\b\b\bdone
+Writing inode tables: \b\b\b\b\bdone
+Creating journal (16384 blocks): done
+Creating 477 huge file(s) with 1024 blocks each: done
+Writing superblocks and filesystem accounting information: \b\b\b\b\bdone
+
+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
+
+Exit status is 0
+tune2fs -O ^metadata_csum test.img
+Exit status is 0
+Change in FS metadata:
+@@ -2,7 +2,7 @@
+ 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 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
++Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
+ Default mount options: user_xattr acl
+ Filesystem state: clean
+ Errors behavior: Continue
+@@ -33,7 +33,6 @@
+ Journal inode: 8
+ Default directory hash: half_md4
+ Journal backup: inode blocks
+-Checksum type: crc32c
+ Journal features: (none)
+ Journal size: 16M
+ Journal length: 16384
+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
+
+Exit status is 0
--- /dev/null
+disable metadata_csum
--- /dev/null
+FSCK_OPT=-fn
+OUT=$test_name.log
+EXP=$test_dir/expect
+CONF=$TMPFILE.conf
+
+cat > $CONF << ENDL
+[fs_types]
+ ext4h = {
+ features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode,64bit,metadata_csum
+ blocksize = 1024
+ inode_size = 256
+ make_hugefiles = true
+ hugefiles_dir = /
+ hugefiles_slack = 0
+ hugefiles_name = aaaaa
+ hugefiles_digits = 4
+ hugefiles_size = 1M
+ zero_hugefiles = false
+ }
+ENDL
+
+echo "tune2fs ^metadata_csum test" > $OUT
+
+MKE2FS_CONFIG=$CONF $MKE2FS -F -T ext4h $TMPFILE 524288 >> $OUT 2>&1
+rm -rf $CONF
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.before
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# remove mcsum
+echo "tune2fs -O ^metadata_csum test.img" >> $OUT
+$TUNE2FS -O ^metadata_csum $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.after
+echo "Change in FS metadata:" >> $OUT
+diff -u $OUT.before $OUT.after | tail -n +3 >> $OUT
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+rm $TMPFILE $OUT.before $OUT.after
+
+#
+# Do the verification
+#
+
+sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" -e 's/test_filesys:.*//g' < $OUT > $OUT.new
+mv $OUT.new $OUT
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+fi
+
+unset IMAGE FSCK_OPT OUT EXP CONF
--- /dev/null
+tune2fs ^metadata_csum test
+Creating filesystem with 524288 1k blocks and 65536 inodes
+Superblock backups stored on blocks:
+ 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
+
+Allocating group tables: \b\b\b\b\bdone
+Writing inode tables: \b\b\b\b\bdone
+Creating journal (16384 blocks): done
+Creating 477 huge file(s) with 1024 blocks each: done
+Writing superblocks and filesystem accounting information: \b\b\b\b\bdone
+
+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
+
+Exit status is 0
+tune2fs -O ^metadata_csum,^uninit_bg test.img
+Exit status is 0
+Change in FS metadata:
+@@ -2,7 +2,7 @@
+ 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 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
++Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize
+ Default mount options: user_xattr acl
+ Filesystem state: clean
+ Errors behavior: Continue
+@@ -33,7 +33,6 @@
+ Journal inode: 8
+ Default directory hash: half_md4
+ Journal backup: inode blocks
+-Checksum type: crc32c
+ Journal features: (none)
+ Journal size: 16M
+ Journal length: 16384
+@@ -47,18 +46,18 @@
+ Block bitmap at 262 (+261)
+ Inode bitmap at 278 (+277)
+ Inode table at 294-549 (+293)
+- 21 free blocks, 536 free inodes, 2 directories, 536 unused inodes
++ 21 free blocks, 536 free inodes, 2 directories
+ Free blocks: 4413-4433
+ Free inodes: 489-1024
+-Group 1: (Blocks 8193-16384) [INODE_UNINIT]
++Group 1: (Blocks 8193-16384)
+ Backup superblock at 8193, Group descriptors at 8194-8197
+ Reserved GDT blocks at 8198-8453
+ Block bitmap at 263 (bg #0 + 262)
+ Inode bitmap at 279 (bg #0 + 278)
+ Inode table at 550-805 (bg #0 + 549)
+- 0 free blocks, 1024 free inodes, 0 directories, 1024 unused inodes
++ 0 free blocks, 1024 free inodes, 0 directories
+ Free blocks:
+ Free inodes: 1025-2048
+-Group 2: (Blocks 16385-24576) [INODE_UNINIT]
++Group 2: (Blocks 16385-24576)
+ Block bitmap at 264 (bg #0 + 263)
+ Inode bitmap at 280 (bg #0 + 279)
+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
+
+Exit status is 0
--- /dev/null
+disable metadata_csum and uninit_bg
--- /dev/null
+FSCK_OPT=-fn
+OUT=$test_name.log
+EXP=$test_dir/expect
+CONF=$TMPFILE.conf
+
+cat > $CONF << ENDL
+[fs_types]
+ ext4h = {
+ features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode,64bit,metadata_csum
+ blocksize = 1024
+ inode_size = 256
+ make_hugefiles = true
+ hugefiles_dir = /
+ hugefiles_slack = 0
+ hugefiles_name = aaaaa
+ hugefiles_digits = 4
+ hugefiles_size = 1M
+ zero_hugefiles = false
+ }
+ENDL
+
+echo "tune2fs ^metadata_csum test" > $OUT
+
+MKE2FS_CONFIG=$CONF $MKE2FS -F -T ext4h $TMPFILE 524288 >> $OUT 2>&1
+rm -rf $CONF
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.before
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# remove mcsum
+echo "tune2fs -O ^metadata_csum,^uninit_bg test.img" >> $OUT
+$TUNE2FS -O ^metadata_csum,^uninit_bg $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.after
+echo "Change in FS metadata:" >> $OUT
+diff -u $OUT.before $OUT.after | tail -n +3 >> $OUT
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+rm $TMPFILE $OUT.before $OUT.after
+
+#
+# Do the verification
+#
+
+sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" -e 's/test_filesys:.*//g' < $OUT > $OUT.new
+mv $OUT.new $OUT
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+fi
+
+unset IMAGE FSCK_OPT OUT EXP CONF
--- /dev/null
+tune2fs ^metadata_csum test
+Creating filesystem with 524288 1k blocks and 65536 inodes
+Superblock backups stored on blocks:
+ 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
+
+Allocating group tables: \b\b\b\b\bdone
+Writing inode tables: \b\b\b\b\bdone
+Creating journal (16384 blocks): done
+Creating 477 huge file(s) with 1024 blocks each: done
+Writing superblocks and filesystem accounting information: \b\b\b\b\bdone
+
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+Exit status is 0
+tune2fs -O ^metadata_csum,uninit_bg test.img
+Exit status is 0
+Change in FS metadata:
+@@ -2,7 +2,7 @@
+ Last mounted on: <not available>
+ Filesystem magic number: 0xEF53
+ Filesystem revision #: 1 (dynamic)
+-Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
++Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
+ Default mount options: user_xattr acl
+ Filesystem state: clean
+ Errors behavior: Continue
+@@ -33,7 +33,6 @@
+ Journal inode: 8
+ Default directory hash: half_md4
+ Journal backup: inode blocks
+-Checksum type: crc32c
+ Journal features: (none)
+ Journal size: 16M
+ Journal length: 16384
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+Exit status is 0
--- /dev/null
+disable metadata_csum and enable uninit_bg
--- /dev/null
+FSCK_OPT=-fn
+OUT=$test_name.log
+EXP=$test_dir/expect
+CONF=$TMPFILE.conf
+
+cat > $CONF << ENDL
+[fs_types]
+ ext4h = {
+ features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode,64bit,metadata_csum
+ blocksize = 1024
+ inode_size = 256
+ make_hugefiles = true
+ hugefiles_dir = /
+ hugefiles_slack = 0
+ hugefiles_name = aaaaa
+ hugefiles_digits = 4
+ hugefiles_size = 1M
+ zero_hugefiles = false
+ }
+ENDL
+
+echo "tune2fs ^metadata_csum test" > $OUT
+
+MKE2FS_CONFIG=$CONF $MKE2FS -F -T ext4h $TMPFILE 524288 >> $OUT 2>&1
+rm -rf $CONF
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.before
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# remove mcsum
+echo "tune2fs -O ^metadata_csum,uninit_bg test.img" >> $OUT
+$TUNE2FS -O ^metadata_csum,uninit_bg $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.after
+echo "Change in FS metadata:" >> $OUT
+diff -u $OUT.before $OUT.after | tail -n +3 >> $OUT
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+rm $TMPFILE $OUT.before $OUT.after
+
+#
+# Do the verification
+#
+
+sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" -e 's/test_filesys:.*//g' < $OUT > $OUT.new
+mv $OUT.new $OUT
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+fi
+
+unset IMAGE FSCK_OPT OUT EXP CONF
--- /dev/null
+tune2fs metadata_csum test
+Creating filesystem with 524288 1k blocks and 65536 inodes
+Superblock backups stored on blocks:
+ 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
+
+Allocating group tables: \b\b\b\b\bdone
+Writing inode tables: \b\b\b\b\bdone
+Creating journal (16384 blocks): done
+Creating 477 huge file(s) with 1024 blocks each: done
+Writing superblocks and filesystem accounting information: \b\b\b\b\bdone
+
+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
+
+Exit status is 0
+tune2fs -O metadata_csum test.img
+
+Please run e2fsck -D on the filesystem.
+
+Exit status is 0
+test_filesys was not cleanly unmounted, check forced.
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 3A: Optimizing directories
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+
+
+Change in FS metadata:
+@@ -2,7 +2,7 @@
+ 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 64bit flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
++Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
+ Default mount options: user_xattr acl
+ Filesystem state: clean
+ Errors behavior: Continue
+@@ -10,7 +10,7 @@
+ Inode count: 65536
+ Block count: 524288
+ Reserved block count: 26214
+-Free blocks: 571
++Free blocks: 568
+ Free inodes: 65048
+ First block: 1
+ Block size: 1024
+@@ -33,6 +33,7 @@
+ Journal inode: 8
+ Default directory hash: half_md4
+ Journal backup: inode blocks
++Checksum type: crc32c
+ Journal features: (none)
+ Journal size: 16M
+ Journal length: 16384
+@@ -46,8 +47,8 @@
+ Block bitmap at 262 (+261)
+ Inode bitmap at 278 (+277)
+ Inode table at 294-549 (+293)
+- 21 free blocks, 536 free inodes, 2 directories, 536 unused inodes
+- Free blocks: 4413-4433
++ 18 free blocks, 536 free inodes, 2 directories, 536 unused inodes
++ Free blocks: 4413, 4417-4433
+ Free inodes: 489-1024
+ Group 1: (Blocks 8193-16384) [INODE_UNINIT]
+ Backup superblock at 8193, Group descriptors at 8194-8197
+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
+
+Exit status is 0
--- /dev/null
+enable metadata_csum
--- /dev/null
+FSCK_OPT=-fn
+OUT=$test_name.log
+EXP=$test_dir/expect
+CONF=$TMPFILE.conf
+
+cat > $CONF << ENDL
+[fs_types]
+ ext4h = {
+ features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode,64bit
+ blocksize = 1024
+ inode_size = 256
+ make_hugefiles = true
+ hugefiles_dir = /
+ hugefiles_slack = 0
+ hugefiles_name = aaaaa
+ hugefiles_digits = 4
+ hugefiles_size = 1M
+ zero_hugefiles = false
+ }
+ENDL
+
+echo "tune2fs metadata_csum test" > $OUT
+
+MKE2FS_CONFIG=$CONF $MKE2FS -F -T ext4h $TMPFILE 524288 >> $OUT 2>&1
+rm -rf $CONF
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.before
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# add mcsum
+echo "tune2fs -O metadata_csum test.img" >> $OUT
+$TUNE2FS -O metadata_csum $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# check
+$FSCK -yD -N test_filesys $TMPFILE >> $OUT 2>&1
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.after
+echo "Change in FS metadata:" >> $OUT
+diff -u $OUT.before $OUT.after | tail -n +3 >> $OUT
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+rm $TMPFILE $OUT.before $OUT.after
+
+#
+# Do the verification
+#
+
+sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" -e 's/test_filesys:.*//g' < $OUT > $OUT.new
+mv $OUT.new $OUT
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+fi
+
+unset IMAGE FSCK_OPT OUT EXP CONF
--- /dev/null
+tune2fs metadata_csum test
+Creating filesystem with 524288 1k blocks and 65536 inodes
+Superblock backups stored on blocks:
+ 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
+
+Allocating group tables: \b\b\b\b\bdone
+Writing inode tables: \b\b\b\b\bdone
+Creating journal (16384 blocks): done
+mke2fs: Operation not supported for inodes containing extents while creating huge files
+Writing superblocks and filesystem accounting information: \b\b\b\b\bdone
+
+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
+
+Exit status is 0
+tune2fs -O metadata_csum test.img
+Extents are not enabled. The file extent tree can be checksummed, whereas block maps cannot. Not enabling extents reduces the coverage of metadata checksumming. Re-run with -O extent to rectify.
+Exit status is 0
+
+Change in FS metadata:
+@@ -2,7 +2,7 @@
+ Last mounted on: <not available>
+ Filesystem magic number: 0xEF53
+ Filesystem revision #: 1 (dynamic)
+-Filesystem features: has_journal ext_attr resize_inode dir_index filetype sparse_super large_file
++Filesystem features: has_journal ext_attr resize_inode dir_index filetype sparse_super large_file metadata_csum
+ Default mount options: user_xattr acl
+ Filesystem state: clean
+ Errors behavior: Continue
+@@ -29,6 +29,7 @@
+ Journal inode: 8
+ Default directory hash: half_md4
+ Journal backup: inode blocks
++Checksum type: crc32c
+ Journal features: (none)
+ Journal size: 16M
+ Journal length: 16384
+@@ -36,7 +37,7 @@
+ Journal start: 0
+
+
+-Group 0: (Blocks 1-8192)
++Group 0: (Blocks 1-8192) [ITABLE_ZEROED]
+ Primary superblock at 1, Group descriptors at 2-3
+ Reserved GDT blocks at 4-259
+ Block bitmap at 260 (+259)
+@@ -45,7 +46,7 @@
+ 7789 free blocks, 1013 free inodes, 2 directories
+ Free blocks: 404-8192
+ Free inodes: 12-1024
+-Group 1: (Blocks 8193-16384)
++Group 1: (Blocks 8193-16384) [ITABLE_ZEROED]
+ Backup superblock at 8193, Group descriptors at 8194-8195
+ Reserved GDT blocks at 8196-8451
+ Block bitmap at 8452 (+259)
+@@ -54,6 +55,6 @@
+ 7803 free blocks, 1024 free inodes, 0 directories
+ Free blocks: 8582-16384
+ Free inodes: 1025-2048
+-Group 2: (Blocks 16385-24576)
++Group 2: (Blocks 16385-24576) [ITABLE_ZEROED]
+ Block bitmap at 16385 (+0)
+ Inode bitmap at 16386 (+1)
+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
+
+Exit status is 0
--- /dev/null
+enable metadata_csum on ext3 fs
--- /dev/null
+FSCK_OPT=-fn
+OUT=$test_name.log
+EXP=$test_dir/expect
+CONF=$TMPFILE.conf
+
+cat > $CONF << ENDL
+[fs_types]
+ ext4h = {
+ features = has_journal,^extent,^huge_file,^flex_bg,^uninit_bg,^dir_nlink,^extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode,^64bit
+ blocksize = 1024
+ inode_size = 128
+ make_hugefiles = true
+ hugefiles_dir = /
+ num_hugefiles = 10
+ hugefiles_name = aaaaa
+ hugefiles_digits = 4
+ hugefiles_size = 1M
+ zero_hugefiles = false
+ }
+ENDL
+
+echo "tune2fs metadata_csum test" > $OUT
+
+MKE2FS_CONFIG=$CONF $MKE2FS -F -T ext4h $TMPFILE 524288 >> $OUT 2>&1
+rm -rf $CONF
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.before
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# add mcsum
+echo "tune2fs -O metadata_csum test.img" >> $OUT
+$TUNE2FS -O metadata_csum $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# check
+$FSCK -yD -N test_filesys $TMPFILE >> $OUT 2>&1
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.after
+echo "Change in FS metadata:" >> $OUT
+diff -u $OUT.before $OUT.after | tail -n +3 >> $OUT
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+rm $TMPFILE $OUT.before $OUT.after
+
+#
+# Do the verification
+#
+
+sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" -e 's/test_filesys:.*//g' < $OUT > $OUT.new
+mv $OUT.new $OUT
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+fi
+
+unset IMAGE FSCK_OPT OUT EXP CONF
--- /dev/null
+tune2fs metadata_csum test
+Creating filesystem with 524288 1k blocks and 65536 inodes
+Superblock backups stored on blocks:
+ 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
+
+Allocating group tables: \b\b\b\b\bdone
+Writing inode tables: \b\b\b\b\bdone
+Creating journal (16384 blocks): done
+Creating 477 huge file(s) with 1024 blocks each: done
+Writing superblocks and filesystem accounting information: \b\b\b\b\bdone
+
+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
+
+Exit status is 0
+tune2fs -O metadata_csum test.img
+
+Please run e2fsck -D on the filesystem.
+
+Exit status is 0
+test_filesys was not cleanly unmounted, check forced.
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 3A: Optimizing directories
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+
+
+Change in FS metadata:
+@@ -2,7 +2,7 @@
+ 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 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize
++Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
+ Default mount options: user_xattr acl
+ Filesystem state: clean
+ Errors behavior: Continue
+@@ -10,7 +10,7 @@
+ Inode count: 65536
+ Block count: 524288
+ Reserved block count: 26214
+-Free blocks: 571
++Free blocks: 568
+ Free inodes: 65048
+ First block: 1
+ Block size: 1024
+@@ -33,6 +33,7 @@
+ Journal inode: 8
+ Default directory hash: half_md4
+ Journal backup: inode blocks
++Checksum type: crc32c
+ Journal features: (none)
+ Journal size: 16M
+ Journal length: 16384
+@@ -40,24 +41,24 @@
+ Journal start: 0
+
+
+-Group 0: (Blocks 1-8192)
++Group 0: (Blocks 1-8192) [ITABLE_ZEROED]
+ Primary superblock at 1, Group descriptors at 2-5
+ Reserved GDT blocks at 6-261
+ Block bitmap at 262 (+261)
+ Inode bitmap at 278 (+277)
+ Inode table at 294-549 (+293)
+- 21 free blocks, 536 free inodes, 2 directories
+- Free blocks: 4413-4433
++ 18 free blocks, 536 free inodes, 2 directories, 536 unused inodes
++ Free blocks: 4413, 4417-4433
+ Free inodes: 489-1024
+-Group 1: (Blocks 8193-16384)
++Group 1: (Blocks 8193-16384) [INODE_UNINIT, ITABLE_ZEROED]
+ Backup superblock at 8193, Group descriptors at 8194-8197
+ Reserved GDT blocks at 8198-8453
+ Block bitmap at 263 (bg #0 + 262)
+ Inode bitmap at 279 (bg #0 + 278)
+ Inode table at 550-805 (bg #0 + 549)
+- 0 free blocks, 1024 free inodes, 0 directories
++ 0 free blocks, 1024 free inodes, 0 directories, 1024 unused inodes
+ Free blocks:
+ Free inodes: 1025-2048
+-Group 2: (Blocks 16385-24576)
++Group 2: (Blocks 16385-24576) [INODE_UNINIT, ITABLE_ZEROED]
+ Block bitmap at 264 (bg #0 + 263)
+ Inode bitmap at 280 (bg #0 + 279)
+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
+
+Exit status is 0
--- /dev/null
+enable metadata_csum when ^uninit_bg
--- /dev/null
+FSCK_OPT=-fn
+OUT=$test_name.log
+EXP=$test_dir/expect
+CONF=$TMPFILE.conf
+
+cat > $CONF << ENDL
+[fs_types]
+ ext4h = {
+ features = has_journal,extent,huge_file,flex_bg,^uninit_bg,dir_nlink,extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode,64bit
+ blocksize = 1024
+ inode_size = 256
+ make_hugefiles = true
+ hugefiles_dir = /
+ hugefiles_slack = 0
+ hugefiles_name = aaaaa
+ hugefiles_digits = 4
+ hugefiles_size = 1M
+ zero_hugefiles = false
+ }
+ENDL
+
+echo "tune2fs metadata_csum test" > $OUT
+
+MKE2FS_CONFIG=$CONF $MKE2FS -F -T ext4h $TMPFILE 524288 >> $OUT 2>&1
+rm -rf $CONF
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.before
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# add mcsum
+echo "tune2fs -O metadata_csum test.img" >> $OUT
+$TUNE2FS -O metadata_csum $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+# check
+$FSCK -yD -N test_filesys $TMPFILE >> $OUT 2>&1
+
+# dump and check
+$DUMPE2FS $TMPFILE 2> /dev/null | grep '^Group 0:' -B99 -A20 | sed -f $cmd_dir/filter.sed > $OUT.after
+echo "Change in FS metadata:" >> $OUT
+diff -u $OUT.before $OUT.after | tail -n +3 >> $OUT
+$FSCK $FSCK_OPT -N test_filesys $TMPFILE >> $OUT 2>&1
+status=$?
+echo Exit status is $status >> $OUT
+
+rm $TMPFILE $OUT.before $OUT.after
+
+#
+# Do the verification
+#
+
+sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" -e 's/test_filesys:.*//g' < $OUT > $OUT.new
+mv $OUT.new $OUT
+
+cmp -s $OUT $EXP
+status=$?
+
+if [ "$status" = 0 ] ; then
+ echo "$test_name: $test_description: ok"
+ touch $test_name.ok
+else
+ echo "$test_name: $test_description: failed"
+ diff $DIFF_OPTS $EXP $OUT > $test_name.failed
+fi
+
+unset IMAGE FSCK_OPT OUT EXP CONF