4 # Test Full File System Hole Punching
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26 echo "QA output created by $seq"
30 status=1 # failure is the default!
37 trap "_cleanup ; exit \$status" 0 1 2 3 15
39 # get standard environment, filters and checks
44 # real QA test starts here
48 _require_xfs_io_falloc_punch
52 testfile=$TEST_DIR/256.$$
57 # Fills a file system by repeatedly creating files in the given folder
58 # starting with the given file size. Files are reduced in size when
59 # they can no longer fit untill no more files can be created.
61 # This routine is used by _test_full_fs_punch to test that a hole may
62 # still be punched when the disk is full by borrowing reserved blocks.
63 # All files are created as a non root user to prevent reserved blocks
64 # from being consumed.
75 echo "USAGE: _fill_fs filesize dir block size"
79 # Creation of files or folders
80 # must not be done as root or
81 # reserved blocks will be consumed
82 _user_do "mkdir -p $dir &> /dev/null"
83 if [ $? -ne 0 ] ; then
87 if [ $file_size -lt $block_size ]
89 $file_size = $block_size
92 while [ $file_size -ge $block_size ]
95 _user_do "$XFS_IO_PROG -F -f -c \"pwrite 0 $file_size\" $dir/$file_count.bin &> /dev/null"
97 if [ -f $dir/$file_count.bin ]
99 bytes_written=`$XFS_IO_PROG -F -c "stat" $dir/$file_count.bin | grep stat.size | cut -d ' ' -f3`
102 # If there was no room to make the file,
103 # then divide it in half, and keep going
104 if [ $bytes_written -lt $file_size ]
106 file_size=$(( $file_size / 2 ))
108 file_count=$(( $file_count + 1 ))
113 # _test_full_fs_punch()
115 # This function will test that a hole may be punched
116 # even when the file system is full. Reserved blocks
117 # should be used to allow a punch hole to proceed even
118 # when there is not enough blocks to further fragment the
119 # file. To test this, this function will fragment the file
120 # system by punching holes in regular intervals and filling
121 # the file system between punches.
123 _test_full_fs_punch()
125 local hole_len=$1 # The length of the holes to punch
126 local hole_interval=$2 # The interval between the holes
127 local iterations=$3 # The number of holes to punch
128 local file_name=$4 # File to punch holes in
129 local block_size=$5 # File system block size
130 local file_len=$(( $(( $hole_len + $hole_interval )) * $iterations ))
131 local path=`dirname $file_name`
136 echo "USAGE: _test_full_fs_punch hole_len hole_interval iterations file_name block_size"
140 rm -f $file_name &> /dev/null
142 $XFS_IO_PROG -F -f -c "pwrite 0 $file_len" \
143 -c "fsync" $file_name &> /dev/null
146 _fill_fs $(( 1024 * 1024 * 1024 )) $path/fill $block_size
148 for (( i=0; i<$iterations; i++ ))
150 # This part must not be done as root in order to
151 # test that reserved blocks are used when needed
152 _user_do "$XFS_IO_PROG -F -f -c \"fpunch $hole_offset $hole_len\" $file_name"
154 if [ $? -ne 0 ] ; then
155 echo Punch hole failed
159 hole_offset=$(( $hole_offset + $hole_len + $hole_interval ))
161 _fill_fs $hole_len $path/fill.$i $block_size
166 # Make a small file system to fill
167 umount $SCRATCH_DEV &> /dev/null
168 _scratch_mkfs_sized $(( 1024 * 1024 * 1024 )) &> /dev/null
170 # Test must be able to write files with non-root permissions
171 chmod 777 $SCRATCH_MNT
173 block_size=`stat -f $SCRATCH_DEV | grep "Block size" | cut -d " " -f3`
174 _test_full_fs_punch $(( $block_size * 2 )) $block_size 500 $SCRATCH_MNT/252.$$ $block_size