generic: add buffered-io CoW test for mixed&source extents

[xfstests-dev.git] / common / reflink

diff --git a/common/reflink b/common/reflink
index ee60398ed20ae9dab05037fbfc8024beea514cee..1a29e5d1869695e1115b0b2c880ee13d60249a5c 100644 (file)
--- a/common/reflink
+++ b/common/reflink
@@ -426,3 +426,54 @@ _sweave_reflink_holes_delalloc() {
                _pwrite_byte 0x64 $((blksz * i)) $blksz $sfile.chk
        done
 }
+
+# Create a file of interleaved holes, unwritten blocks, regular blocks, and
+# reflinked blocks
+_sweave_reflink_rainbow() {
+       local blksz=$1
+       local nr=$2
+       local sfile=$3
+       local dfile=$4
+
+       $XFS_IO_PROG -f -c "truncate $((blksz * nr))" $sfile
+       _pwrite_byte 0x00 0 $((blksz * nr)) $sfile.chk
+       _pwrite_byte 0x61 0 $((blksz * nr)) $dfile
+       seq 0 5 $((nr - 1)) | while read i; do
+               _pwrite_byte 0x61 $((blksz * i)) $blksz $sfile
+               _pwrite_byte 0x61 $((blksz * i)) $blksz $sfile.chk
+       done
+       # 0 blocks are reflinked
+       seq 0 5 $((nr - 1)) | while read i; do
+               _reflink_range $sfile $((blksz * i)) $dfile $((blksz * i)) $blksz
+               _pwrite_byte 0x61 $((blksz * i)) $blksz $sfile.chk
+       done
+       # 1 blocks are unwritten
+       seq 1 5 $((nr - 1)) | while read i; do
+               $XFS_IO_PROG -f -c "falloc $((blksz * i)) $blksz" $sfile
+               _pwrite_byte 0x00 $((blksz * i)) $blksz $sfile.chk
+       done
+       # 2 blocks are holes
+       seq 2 5 $((nr - 1)) | while read i; do
+               _pwrite_byte 0x00 $((blksz * i)) $blksz $sfile.chk
+       done
+       # 3 blocks are regular
+       seq 3 5 $((nr - 1)) | while read i; do
+               _pwrite_byte 0x71 $((blksz * i)) $blksz $sfile
+               _pwrite_byte 0x71 $((blksz * i)) $blksz $sfile.chk
+       done
+       # 4 blocks will be delalloc later
+}
+
+# For a file created with _sweave_reflink_rainbow, fill the holes with delalloc
+# extents
+_sweave_reflink_rainbow_delalloc() {
+       local blksz=$1
+       local nr=$2
+       local dfile=$3
+
+       # 4 blocks are delalloc (do later)
+       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
+}