looks good.
Nits:
For 64K sector size, the BLKS is 512, and BLKS is 128 (one 64K sector).
^^ NBLKS
$FALLOC is the correct value of 64K (10K rounded up to 64K).
Not sure what you meant here. More below.
diff --git a/tests/btrfs/002 b/tests/btrfs/002
index f223cc60..0c231b89 100755
--- a/tests/btrfs/002
+++ b/tests/btrfs/002
@@ -70,19 +70,14 @@ _read_modify_write()
_fill_blk()
{
local FSIZE
- local BLKS
- local NBLK
- local FALLOC
- local WS
+ local NEWSIZE
for i in `find /$1 -type f`
do
FSIZE=`stat -t $i | cut -d" " -f2`
- BLKS=`stat -c "%B" $i`
- NBLK=`stat -c "%b" $i`
- FALLOC=$(($BLKS * $NBLK))
- WS=$(($FALLOC - $FSIZE))
- _ddt of=$i oseek=$FSIZE obs=$WS count=1 status=noxfer 2>/dev/null &
+ NEWSIZE=$(( ($FSIZE + $blksize -1 ) / $blksize * $blksize ))
Please add extra ( ) otherwise it is very confusing.
NEWSIZE=$(( (($FSIZE + $blksize -1 ) / $blksize) * $blksize ))
+
+ $XFS_IO_PROG -c "pwrite -i /dev/urandom $FSIZE $(( $NEWSIZE - $FSIZE ))" $i > /dev/null &
Reviewed-by: Anand Jain <anand.jain@xxxxxxxxxx>
Thanks, Anand
