[PATCH mtd-utils v2 RESEND 095/102] tests: ubifs_tools: fsck_tests: Add cycle_powercut+fsck test

[Zhihao Cheng]

Inject powercut while doing fsstress on mounted UBIFS, check the
consistency of UBIFS after fsck.
This testscase mainly makes sure that fsck.ubifs can make UBIFS
image be consistent in common stress cases and powercut cases.

Signed-off-by: Zhihao Cheng <chengzhihao1 at huawei.com>
---
 .gitignore                                         |   1 +
 configure.ac                                       |   3 +-
 tests/ubifs_tools-tests/Makemodule.am              |   3 +-
 .../fsck_tests/cycle_powercut_mount_fsck.sh.in     | 148 +++++++++++++++++++++
 4 files changed, 153 insertions(+), 2 deletions(-)
 create mode 100755 tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh.in

diff --git a/.gitignore b/.gitignore
index ea99a614..1d150f7a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -118,6 +118,7 @@ tests/ubifs_tools-tests/fsck_tests/authentication_refuse.sh
 tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh
 tests/ubifs_tools-tests/fsck_tests/powercut_fsck_mount.sh
 tests/ubifs_tools-tests/fsck_tests/cycle_corrupted_fsck_fault_inject.sh
+tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh
 
 #
 # Files generated by autotools
diff --git a/configure.ac b/configure.ac
index 47efd40c..7b929459 100644
--- a/configure.ac
+++ b/configure.ac
@@ -297,7 +297,8 @@ AC_CONFIG_FILES([tests/fs-tests/fs_help_all.sh
 	tests/ubifs_tools-tests/fsck_tests/authentication_refuse.sh
 	tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh
 	tests/ubifs_tools-tests/fsck_tests/powercut_fsck_mount.sh
-	tests/ubifs_tools-tests/fsck_tests/cycle_corrupted_fsck_fault_inject.sh])
+	tests/ubifs_tools-tests/fsck_tests/cycle_corrupted_fsck_fault_inject.sh
+	tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh])
 
 AC_OUTPUT([Makefile])
 
diff --git a/tests/ubifs_tools-tests/Makemodule.am b/tests/ubifs_tools-tests/Makemodule.am
index 932a2bcb..2c190e2b 100644
--- a/tests/ubifs_tools-tests/Makemodule.am
+++ b/tests/ubifs_tools-tests/Makemodule.am
@@ -3,4 +3,5 @@ test_SCRIPTS += \
 	tests/ubifs_tools-tests/fsck_tests/authentication_refuse.sh \
 	tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh \
 	tests/ubifs_tools-tests/fsck_tests/powercut_fsck_mount.sh \
-	tests/ubifs_tools-tests/fsck_tests/cycle_corrupted_fsck_fault_inject.sh
+	tests/ubifs_tools-tests/fsck_tests/cycle_corrupted_fsck_fault_inject.sh \
+	tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh
diff --git a/tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh.in b/tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh.in
new file mode 100755
index 00000000..6af1b54d
--- /dev/null
+++ b/tests/ubifs_tools-tests/fsck_tests/cycle_powercut_mount_fsck.sh.in
@@ -0,0 +1,148 @@
+#!/bin/sh
+# Copyright (c), 2024, Huawei Technologies Co, Ltd.
+# Author: Zhihao Cheng <chengzhihao1 at huawei.com>
+#
+# Test Description:
+# Do many cycles of mount/fsstress/powercut/umount/fsck/mount, check whether
+# mount is successful.
+# Running time: 9h
+
+TESTBINDIR=@TESTBINDIR@
+source $TESTBINDIR/common.sh
+
+ID="0x20,0xa7,0x00,0x26" # 4G 256KB 4KB 2KB-sub-page
+
+function run_test()
+{
+	local encryption=$1
+
+	echo "Do cycle mount+powercut+fsck+umount($encryption) test"
+	modprobe nandsim id_bytes=$ID
+	mtdnum="$(find_mtd_device "$nandsim_patt")"
+	flash_eraseall /dev/mtd$mtdnum
+
+	dmesg -c > /dev/null
+
+	modprobe ubi mtd="$mtdnum,4096" || fatal "modprobe ubi fail"
+	ubimkvol -N vol_test -m -n 0 /dev/ubi$UBI_NUM || fatal "mkvol fail"
+	modprobe ubifs || fatal "modprobe ubifs fail"
+
+	if [[ "$encryption" == "encrypted" ]]; then
+		encryption_gen_key
+	fi
+
+	round=0
+	while [[ $round -lt 60 ]]
+	do
+		echo "---------------------- ROUND $round ----------------------"
+		let round=$round+1
+
+		mount_ubifs $DEV $MNT || fatal "mount ubifs fail"
+		if [[ "$encryption" == "encrypted" ]]; then
+			encryption_set_key $MNT
+		fi
+
+		if [[ $(($round % 30)) == 0 ]]
+		then
+			echo "Clean files"
+			rm -rf $MNT/*
+			check_err_msg
+		fi
+
+		fsstress -d $MNT -l0 -p4 -n10000 &
+		sleep $((RANDOM % 30))
+
+		per=`df -Th | grep ubifs | awk '{print $6}'`;
+		if [[ ${per%?} -gt 95 ]]; then
+			dmesg -c > /dev/null # The ENOSPC error messages may exist
+		else
+			check_err_msg # Make sure new operations are okay after fsck
+		fi
+		powercut
+
+		ps -e | grep -w fsstress > /dev/null 2>&1
+		while [ $? -eq 0 ]
+		do
+			killall -9 fsstress > /dev/null 2>&1
+			sleep 1
+			ps -e | grep -w fsstress > /dev/null 2>&1
+		done
+
+		while true
+		do
+			res=`mount | grep "$MNT"`
+			if [[ "$res" == "" ]]
+			then
+				break;
+			fi
+			umount $MNT
+			sleep 0.1
+		done
+
+		fsck.ubifs -a $DEV 2>&1 > $LOG_FILE
+		res=$?
+		cat $LOG_FILE
+		if [[ $res != $FSCK_OK ]]
+		then
+			# Powercut during layout_leb_in_gaps may change index
+			# LEBs without updating LPT.
+			idx_log=`cat $LOG_FILE | grep "Inconsistent properties" | grep "is_idx 1"`
+			# The lpt nodes could be parsed incorrectly because the lpt disk
+			# layout is too simple. See details in
+			# https://lore.kernel.org/linux-mtd/97ca7fe4-4ad4-edd1-e97a-1d540aeabe2d@huawei.com/
+			lpt_log=`cat $LOG_FILE | grep "dbg_check_ltab_lnum: invalid empty space in LEB"`
+			if [[ "$idx_log" == "" ]] && [[ "$lpt_log" == "" ]]; then
+				fatal "fsck fail $res"
+			fi
+			if [[ $res != $FSCK_NONDESTRUCT ]]; then
+				fatal "fsck fail $res"
+			fi
+		fi
+
+		dmesg -c > /dev/null # powercut could reproduce error messages
+
+		enable_chkfs
+
+		mount_ubifs $DEV $MNT "noauthentication" "noatime"
+		res=$?
+		if [[ $res != 0 ]]
+		then
+			fatal "mount fail $res"
+		fi
+
+		if [[ "$encryption" == "encrypted" ]]; then
+			encryption_set_key $MNT
+		fi
+
+		du -sh $MNT > /dev/null  # Make sure all files are accessible
+		ret=$?
+		if [[ $ret != 0 ]]; then
+			fatal "Cannot access all files"
+		fi
+		check_err_msg
+
+		umount $MNT
+		res=$?
+		if [[ $res != 0 ]]
+		then
+			fatal "unmount fail $res"
+		fi
+
+		check_err_msg
+
+		disable_chkfs
+	done
+
+	modprobe -r ubifs
+	modprobe -r ubi
+	modprobe -r nandsim
+}
+
+check_fsstress
+start_t=$(date +%s)
+run_test "encrypted"
+run_test "noencrypted"
+end_t=$(date +%s)
+time_cost=$(( end_t - start_t ))
+echo "Success, cost $time_cost seconds"
+exit 0
-- 
2.13.6