[PATCH 18/28] check-parallel: create a "results-latest" symlink

[Dave Chinner <david@fromorbit.com>]

From: Dave Chinner <dchinner@redhat.com>

check-parallel ensures that it doesn't overwrite results by creating
date-stamped results directories. This, however, makes it harder to
easy find the results for the test that is currently running or has
just completed.

To solve this problem, maintain a symlink to the latest results
directory so that it can always be found by the same name.

Also, if this symlink exists and is valid, use it as the source for
runtime ordering data for the next run instead of trying to find it
via ls and sort based ordering.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 check-parallel | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/check-parallel b/check-parallel
index 374ac8e96..1b67709a2 100755
--- a/check-parallel
+++ b/check-parallel
@@ -149,7 +149,9 @@ if [[ $runners -le 0 || $runners -gt 1024 ]]; then
 	usage
 fi
 
-if [ -d "$basedir/runner-0/" ]; then
+if [ -L $basedir/runner-0/latest-result ]; then
+	prev_results="latest-result"
+elif [ -d "$basedir/runner-0/" ]; then
 	prev_results=`ls -tr $basedir/runner-0/ | grep results | tail -1`
 fi
 
@@ -325,6 +327,9 @@ runner_go()
 	mkdir -p $TEST_DIR
 	mkdir -p $SCRATCH_MNT
 	mkdir -p $RESULT_BASE
+	rm -f $me/latest-result
+	ln -s $_results $me/latest-result
+
 	rm -f $RESULT_BASE/check.*
 
 	# Only supports default mkfs parameters right now
-- 
2.45.2