It is unnecssary to always create a log-writes device based on
the size of the entire underlying device.
Signed-off-by: Xiao Yang <yangx.jy@xxxxxxxxxxx>
---
common/dmlogwrites | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/common/dmlogwrites b/common/dmlogwrites
index 9fa1c977..d7b23cec 100644
--- a/common/dmlogwrites
+++ b/common/dmlogwrites
@@ -61,12 +61,20 @@ _require_log_writes_dax_mountopt()
_log_writes_init()
{
- blkdev=$1
+ local blkdev=$1
+ local range=$2
+ local BLK_DEV_SIZE
[ -z "$blkdev" ] && _fail \
"block dev must be specified for _log_writes_init"
- local BLK_DEV_SIZE=`blockdev --getsz $blkdev`
+ if [ -z "$range" ]; then
+ BLK_DEV_SIZE=`blockdev --getsz $blkdev`
+ else
+ local blksz=`blockdev --getss $blkdev`
+ BLK_DEV_SIZE=$((range / blksz))
+ fi
+
LOGWRITES_NAME=logwrites-test
LOGWRITES_DMDEV=/dev/mapper/$LOGWRITES_NAME
LOGWRITES_TABLE="0 $BLK_DEV_SIZE log-writes $blkdev $LOGWRITES_DEV"
--
2.34.1
