common: add helper to count number of exclusive extents in a file

[xfstests-dev.git] / common / rc

diff --git a/common/rc b/common/rc
index ef0c250923e4c38752eddcd679c66f3f8406ded2..3c4121780ebf14c10dc652e775676dd51b0b8250 100644 (file)
--- a/common/rc
+++ b/common/rc
@@ -3199,12 +3199,21 @@ _require_metadata_journaling()
 
 _count_extents()
 {
-       $XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l
+       $XFS_IO_PROG -r -c "fiemap" $1 | tail -n +2 | grep -v hole | wc -l
+}
+
+# Similar to _count_extents() but if any extent is shared multiples times in
+# the file (reflinked to different file offsets), it is accounted as 1 extent
+# instead of N extents.
+_count_exclusive_extents()
+{
+       $XFS_IO_PROG -r -c "fiemap" $1 | tail -n +2 | grep -v hole | \
+               cut -d ' ' -f 3 | sort | uniq | wc -l
 }
 
 _count_holes()
 {
-       $XFS_IO_PROG -c "fiemap" $1 | tail -n +2 | grep hole | wc -l
+       $XFS_IO_PROG -r -c "fiemap" $1 | tail -n +2 | grep hole | wc -l
 }
 
 _count_attr_extents()