diff options
Diffstat (limited to 'common/reflink')
| -rw-r--r-- | common/reflink | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/common/reflink b/common/reflink index 76e9cb7d..22adc444 100644 --- a/common/reflink +++ b/common/reflink @@ -325,6 +325,39 @@ _weave_reflink_regular() { done } +# Create a file of interleaved holes, unwritten blocks, and regular blocks. +_weave_file_rainbow() { + blksz=$1 + nr=$2 + dfile=$3 + + $XFS_IO_PROG -f -c "truncate $((blksz * nr))" $dfile + _pwrite_byte 0x00 0 $((blksz * nr)) $dfile.chk + # 0 blocks are unwritten + seq 1 5 $((nr - 1)) | while read i; do + $XFS_IO_PROG -f -c "falloc $((blksz * i)) $blksz" $dfile + _pwrite_byte 0x00 $((blksz * i)) $blksz $dfile.chk + done + # 1 blocks are holes + seq 2 5 $((nr - 1)) | while read i; do + _pwrite_byte 0x00 $((blksz * i)) $blksz $dfile.chk + done + # 2 blocks are regular + seq 3 5 $((nr - 1)) | while read i; do + _pwrite_byte 0x71 $((blksz * i)) $blksz $dfile + _pwrite_byte 0x71 $((blksz * i)) $blksz $dfile.chk + done + # 3 blocks are holes + seq 2 5 $((nr - 1)) | while read i; do + _pwrite_byte 0x00 $((blksz * i)) $blksz $dfile.chk + done + # 4 blocks are delalloc + seq 4 5 $((nr - 1)) | while read i; do + _pwrite_byte 0x62 $((blksz * i)) $blksz $dfile + _pwrite_byte 0x62 $((blksz * i)) $blksz $dfile.chk + done +} + # Create a file of interleaved holes, unwritten blocks, regular blocks, and # reflinked blocks _weave_reflink_rainbow() { |