xfs/270: actually test log recovery with unknown rocompat features

Make sure that log recovery will not succeed if there are unknown
rocompat features in the superblock and the log is dirty.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>

2 files changed, 58 insertions, 26 deletions

diff --git a/tests/xfs/270 b/tests/xfs/270
index 900ae5d5ab..7d4e1f6a87 100755
--- a/tests/xfs/270
+++ b/tests/xfs/270
@@ -23,41 +23,48 @@ _fixed_by_kernel_commit xxxxxxxxxxxx \
 _require_scratch_nocheck
 # Only V5 XFS disallow rw mount/remount with unknown ro-compat features
 _require_scratch_xfs_crc
-
-_scratch_mkfs_xfs >>$seqres.full 2>&1
-_scratch_mount
-echo moo > $SCRATCH_MNT/testfile
-_scratch_unmount
+_require_scratch_shutdown
 
 # set the highest bit of features_ro_compat, use it as an unknown
 # feature bit. If one day this bit become known feature, please
 # change this case.
+set_bad_rocompat() {
+	ro_compat=$(_scratch_xfs_get_metadata_field "features_ro_compat" "sb 0")
+	echo $ro_compat | grep -q -E '^0x[[:xdigit:]]$'
+	if [[ $? != 0  ]]; then
+		echo "features_ro_compat has an invalid value."
+		return 1
+	fi
 
-ro_compat=$(_scratch_xfs_get_metadata_field "features_ro_compat" "sb 0")
-echo $ro_compat | grep -q -E '^0x[[:xdigit:]]$'
-if [[ $? != 0  ]]; then
-	echo "features_ro_compat has an invalid value."
-fi
+	ro_compat=$(echo $ro_compat | \
+			    awk '/^0x[[:xdigit:]]+/ {
+					printf("0x%x\n", or(strtonum($1), 0x80000000))
+				}')
 
-ro_compat=$(echo $ro_compat | \
-		    awk '/^0x[[:xdigit:]]+/ {
-				printf("0x%x\n", or(strtonum($1), 0x80000000))
-			}')
+	# write the new ro compat field to the superblock
+	_scratch_xfs_set_metadata_field "features_ro_compat" "$ro_compat" "sb 0" \
+					> $seqres.full 2>&1
 
-# write the new ro compat field to the superblock
-_scratch_xfs_set_metadata_field "features_ro_compat" "$ro_compat" "sb 0" \
-				> $seqres.full 2>&1
+	# read the newly set ro compat filed for verification
+	new_ro_compat=$(_scratch_xfs_get_metadata_field "features_ro_compat" "sb 0" \
+							2>/dev/null)
 
-# read the newly set ro compat filed for verification
-new_ro_compat=$(_scratch_xfs_get_metadata_field "features_ro_compat" "sb 0" \
-						2>/dev/null)
+	# verify the new ro_compat field is correct. Without xfsprogs commit
+	# f4afdcb0ad ("xfs_db: clean up the salvage read callsites in set_cur()"),
+	# we can't get new_ro_compat value.
+	if [ "$new_ro_compat" != "$ro_compat" ]; then
+		echo "Unable to set new features_ro_compat. Wanted $ro_compat, got $new_ro_compat"
+		return 1
+	fi
+	return 0
+}
 
-# verify the new ro_compat field is correct. Without xfsprogs commit
-# f4afdcb0ad ("xfs_db: clean up the salvage read callsites in set_cur()"),
-# we can't get new_ro_compat value.
-if [ "$new_ro_compat" != "$ro_compat" ]; then
-	echo "Unable to set new features_ro_compat. Wanted $ro_compat, got $new_ro_compat"
-fi
+# Once with a clean filesystem...
+_scratch_mkfs_xfs >>$seqres.full 2>&1
+_scratch_mount
+echo moo > $SCRATCH_MNT/testfile
+_scratch_unmount
+set_bad_rocompat
 
 # rw mount with unknown ro-compat feature should fail
 echo "rw mount test"
@@ -87,6 +94,29 @@ fi
 
 _scratch_unmount
 
+# And again with a dirty filesystem...
+_scratch_mkfs_xfs >>$seqres.full 2>&1
+_scratch_mount
+echo moo > $SCRATCH_MNT/testfile
+$XFS_IO_PROG -x -c 'shutdown -f' "${SCRATCH_MNT}"
+_scratch_unmount
+set_bad_rocompat
+
+# rw mount with unknown ro-compat feature should fail
+echo "rw mount test"
+_try_scratch_mount 2>>$seqres.full
+if [ $? -eq 0 ]; then
+	_fail "rw mount test failed"
+fi
+
+# ro mount should succeed even with log recovery
+echo "ro mount test"
+_try_scratch_mount -o ro 2>>$seqres.full
+if [ $? -ne 0 ]; then
+	_fail "ro mount test failed"
+fi
+cat $SCRATCH_MNT/testfile > /dev/null
+
 # success, all done
 status=0
 exit
diff --git a/tests/xfs/270.out b/tests/xfs/270.out
index edf4c25489..a519d2f328 100644
--- a/tests/xfs/270.out
+++ b/tests/xfs/270.out
@@ -2,3 +2,5 @@ QA output created by 270
 rw mount test
 ro mount test
 rw remount test
+rw mount test
+ro mount test