4 # Test Full File System Hole Punching
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26 seqres=$RESULT_DIR/$seq
27 echo "QA output created by $seq"
31 status=1 # failure is the default!
38 trap "_cleanup ; exit \$status" 0 1 2 3 15
40 # get standard environment, filters and checks
45 # real QA test starts here
49 _require_xfs_io_command "fpunch"
54 testfile=$TEST_DIR/256.$$
58 # Fills a file system by repeatedly creating files in the given folder
59 # starting with the given file size. Files are reduced in size when
60 # they can no longer fit untill no more files can be created.
62 # This routine is used by _test_full_fs_punch to test that a hole may
63 # still be punched when the disk is full by borrowing reserved blocks.
64 # All files are created as a non root user to prevent reserved blocks
65 # from being consumed.
76 echo "USAGE: _fill_fs filesize dir block size"
80 # Creation of files or folders
81 # must not be done as root or
82 # reserved blocks will be consumed
83 _user_do "mkdir -p $dir &> /dev/null"
84 if [ $? -ne 0 ] ; then
88 if [ $file_size -lt $block_size ]
90 $file_size = $block_size
93 while [ $file_size -ge $block_size ]
96 _user_do "$XFS_IO_PROG -f -c \"pwrite 0 $file_size\" $dir/$file_count.bin &> /dev/null"
98 if [ -f $dir/$file_count.bin ]
100 bytes_written=`$XFS_IO_PROG -c "stat" $dir/$file_count.bin | grep stat.size | cut -d ' ' -f3`
103 # If there was no room to make the file,
104 # then divide it in half, and keep going
105 if [ $bytes_written -lt $file_size ]
107 file_size=$(( $file_size / 2 ))
109 file_count=$(( $file_count + 1 ))
114 # _test_full_fs_punch()
116 # This function will test that a hole may be punched
117 # even when the file system is full. Reserved blocks
118 # should be used to allow a punch hole to proceed even
119 # when there is not enough blocks to further fragment the
120 # file. To test this, this function will fragment the file
121 # system by punching holes in regular intervals and filling
122 # the file system between punches.
124 _test_full_fs_punch()
126 local hole_len=$1 # The length of the holes to punch
127 local hole_interval=$2 # The interval between the holes
128 local iterations=$3 # The number of holes to punch
129 local file_name=$4 # File to punch holes in
130 local block_size=$5 # File system block size
131 local file_len=$(( $(( $hole_len + $hole_interval )) * $iterations ))
132 local path=`dirname $file_name`
137 echo "USAGE: _test_full_fs_punch hole_len hole_interval iterations file_name block_size"
141 rm -f $file_name &> /dev/null
143 $XFS_IO_PROG -f -c "pwrite 0 $file_len" \
144 -c "fsync" $file_name &> /dev/null
147 _fill_fs $(( 1024 * 1024 * 1024 )) $path/fill $block_size
149 for (( i=0; i<$iterations; i++ ))
151 # This part must not be done as root in order to
152 # test that reserved blocks are used when needed
153 _user_do "$XFS_IO_PROG -f -c \"fpunch $hole_offset $hole_len\" $file_name"
155 if [ $? -ne 0 ] ; then
156 echo Punch hole failed
160 hole_offset=$(( $hole_offset + $hole_len + $hole_interval ))
162 _fill_fs $hole_len $path/fill.$i $block_size
167 # Make a small file system to fill
168 _scratch_unmount &> /dev/null
169 _scratch_mkfs_sized $(( 1536 * 1024 * 1024 )) &> /dev/null
171 # Test must be able to write files with non-root permissions
172 chmod 777 $SCRATCH_MNT
174 block_size=`get_block_size $SCRATCH_MNT`
175 _test_full_fs_punch $(( $block_size * 2 )) $block_size 500 $SCRATCH_MNT/252.$$ $block_size