[PATCH 1/8] test-kpartx: add test for invocation on image file

[Martin Wilck <mwilck@suse.com>]

Add a test for kpartx invocation on an image file that is not
yet part of a loop device, passing a relative path to kpartx:

        # kpartx -av disk.img
        ...
        # kpartx -d disk.img

The recent patches 95c4189b "kpartx: Use absolute paths to create mappings"
and c1adcc5b "kpartx: Use absolute paths to create mappings" both
independently fixed this behavior, which had been broken previously by
9bdfa3eb "kpartx: use absolute path for regular files".

Cc: Stef Walter <stefw@redhat.com>
Cc: Yuval Turgeman <yturgema@redhat.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
---
 kpartx/test-kpartx | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/kpartx/test-kpartx b/kpartx/test-kpartx
index d2001dce..d3c9aef5 100755
--- a/kpartx/test-kpartx
+++ b/kpartx/test-kpartx
@@ -87,6 +87,7 @@ step preparation
 FILE1=kpartx1
 FILE2=kpartx2
 FILE3=kpartx3
+FILE4=kpartx4
 SIZE=$((1024*1024*1024))  # use bytes as units here
 SECTSIZ=512
 OFFS=32                # offset of linear mapping into dev, sectors
@@ -108,6 +109,7 @@ step "create loop devices"
 truncate -s $SIZE $FILE1
 truncate -s $SIZE $FILE2
 truncate -s $SIZE $FILE3
+truncate -s $SIZE $FILE4
 
 LO1=$(losetup -f $FILE1 --show)
 push_cleanup 'losetup -d $LO1'
@@ -115,8 +117,10 @@ LO2=$(losetup -f $FILE2 --show)
 push_cleanup 'losetup -d $LO2'
 LO3=$(losetup -f $FILE3 --show)
 push_cleanup 'losetup -d $LO3'
+LO4=$(losetup -f $FILE4 --show)
+push_cleanup 'losetup -d $LO4'
 
-[[ $LO1 && $LO2 && $LO3 && -b $LO1 && -b $LO2 && -b $LO3 ]]
+[[ $LO1 && $LO2 && $LO3 && $LO4 && -b $LO1 && -b $LO2 && -b $LO3 && -b $LO4 ]]
 DEV1=$(stat -c "%t:%T" $LO1)
 DEV2=$(stat -c "%t:%T" $LO2)
 DEV3=$(stat -c "%t:%T" $LO3)
@@ -173,6 +177,7 @@ step "create partitions on loop devices"
 
 mk_partitions $LO1
 mk_partitions $LO2
+mk_partitions $LO4
 
 # Test invocation of kpartx with regular file here
 LO2P1=/dev/mapper/$(basename $LO2)-foo1
@@ -310,4 +315,21 @@ $KPARTX $KPARTX_OPTS -f -d $LO3
 [[ -b /dev/mapper/$SPAN1 ]]
 [[ -b /dev/mapper/$SPAN2 ]]
 
+step "test kpartx creation/deletion on an image file with no existing loopdev"
+losetup -d $LO4
+
+OUTPUT=$($KPARTX $KPARTX_OPTS -v -a $FILE4 2>&1)
+read loop dm < \
+     <(sed -n  's/^add map \(loop[0-9]*\)p1 ([0-9]*:\([0-9]*\)).*$/\1 dm-\2/p' \
+	   <<<$OUTPUT)
+[[ $dm && $loop ]]
+push_cleanup "dmsetup remove -f /dev/$dm"
+push_cleanup "losetup -d /dev/$loop"
+
+[[ -b /dev/mapper/${loop}p1 ]]
+$KPARTX -d $KPARTX_OPTS $FILE4
+[[ ! -b /dev/mapper/${loop}p1 ]]
+# /dev/$loop is _not_ automatically deleted
+[[ -b /dev/${loop} ]]
+
 OK=yes
-- 
2.19.0