BUG REPORT:bug in gc: inconsistent valid blocks

Author: wgtdkp

fs/hmfs/build.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+if [ "$1" == "hmfs" ] 
+    then
+    insmod ./hmfs.ko 
+    sudo mount -t hmfs -o physaddr=0x4B000000,init=100M none ~/mount_hmfs/
+elif [ "$1" == "nohmfs" ] 
+    then
+    umount ~/mount_hmfs
+    rmmod hmfs
+fi

fs/hmfs/test/create.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+num_file=2048
+
+#create testing files, they will be orphan files later
+for ((i=0; i<$num_file; i++)); do
+    touch ~/mount_hmfs/orphan_$i.txt
+    echo "this is a test file" > ~/mount_hmfs/orphan_$i.txt
+done
+
+echo "$num_file files created..."

fs/hmfs/test/delete.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+num_file=2048
+for ((i=0; i<$num_file; i++)); do
+    #remove the file will create an orhan file
+    rm ~/mount_hmfs/orphan_$i.txt
+done
+
+echo "$num_file files deleted..."
+
+#check the cmi info
+. ./info.sh "cmi"
+
+#sync the file to enforce doing checkpoint
+sync

fs/hmfs/test/hold_file_open.py

@@ -0,0 +1,14 @@
+#!/usr/bin/python3
+from os.path import expanduser
+
+
+home = expanduser('~')
+file_list = []
+for i in range(2048):
+    with open(home + "/mount_hmfs/orphan_{:d}.txt".format(i), 'w') as file:
+        file_list.append(file)
+        file.write("ssssssssssssssssssss")
+
+#hold files
+while True:
+    pass

fs/hmfs/test/info.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+hmfs_debug_dir=/sys/kernel/debug/hmfs/1258291200/info
+echo "$1" > ${hmfs_debug_dir} & cat ${hmfs_debug_dir}

fs/hmfs/test/mount_f2fs.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# create a 100M file
+dd if=/dev/zero of=/opt/dev0-backstore bs=1M count=100
+
+# create the loopback block device
+mknod /dev/fake-dev0 b 7 200
+
+losetup /dev/fake-dev0 /opt/dev0-backstore
+mount -t f2fs /dev/fake-dev0 ~/mount_f2fs/

fs/hmfs/test/open.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    FILE* fps[2048];
+    char filename[100];
+    for (int i = 0; i < 2048; i++) {
+        sprintf(filename, "/home/wgtdkp/mount_hmfs/orphan_%d.txt", i);
+        printf("%s\n", filename);
+        fps[i] = fopen(filename, "r");
+        if (!fps[i])
+            printf("error!\n");
+    }
+    while (1) {}
+    return 0;
+}

fs/hmfs/test/orphan_test.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+num_file=2048
+cd ~/mount_hmfs/
+
+#create testing files, they will be orphan files later
+for ((i=0; i<$num_file; i++)); do
+    touch orphan_$i.txt
+    echo "this is a test file" > orphan_$i.txt
+done
+
+echo ${num_file} "file created"
+
+#python3 $HOME/hmfs/fs/hmfs/test/hold_file_open.py &
+
+#for ((i=0; i<$num_file; i++)); do
+    #remove the file will create an orhan file
+#    rm orphan_$i.txt
+#done
+
+#cd $HOME/hmfs/fs/hmfs/test/
+#check the cmi info
+#. ./info.sh "cmi"
+
+#sync the file to enforce doing checkpoint
+#sync
+
+
+
+
+

fs/hmfs/test/reproduce.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+cd $HOME/hmfs/fs/hmfs/test/
+
+. ./create.sh
+. ./delete.sh
+. ./create.sh
+. ./delete.sh
+. ./create.sh
+. ./delete.sh