check: add CLI option to repeat tests

Frequently when trying to reproduce a problem I want to run a set of
specific tests in a loop, over and over again. I run fstests from a
set of run scripts that have non-trivial overhead (e.g. patterning
block devices before the runs start), so if all I want to do is run
the same test 100x, using a shell loop over the entire run
scripts reduces the iteration rate substantially.

Hence add an option to check to allow fstests to loop a number of
times over the configured test set without stopping.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/check b/check
index 2e148e5776e56f8586087e0db96bd8877c7bf118..2676b61978e1a486e34b2b93358ebaccff382819 100755 (executable)
--- a/check
+++ b/check
@@ -26,6 +26,7 @@ subdir_xfile=""
 brief_test_summary=false
 do_report=false
 DUMP_OUTPUT=false
+iterations=1
 
 # This is a global variable used to pass test failure text to reporting gunk
 _err_msg=""
@@ -66,6 +67,7 @@ check options
     -n                 show me, do not run tests
     -T                 output timestamps
     -r                 randomize test order
+    -i <n>             iterate the test list <n> times
     -d                 dump test output to stdout
     -b                 brief test summary
     -R fmt[,fmt]       generate report in formats specified. Supported format: [xunit]
@@ -297,7 +299,7 @@ while [ $# -gt 0 ]; do
 
        -n)     showme=true ;;
         -r)    randomize=true ;;
-
+       -i)     iterations=$2; shift ;;
        -T)     timestamp=true ;;
        -d)     DUMP_OUTPUT=true ;;
        -b)     brief_test_summary=true;;
@@ -525,7 +527,10 @@ else
        trap "_wrapup; exit \$status" 0 1 2 3 15
 fi
 
-for section in $HOST_OPTIONS_SECTIONS; do
+function run_section()
+{
+       local section=$1
+
        OLD_FSTYP=$FSTYP
        OLD_TEST_FS_MOUNT_OPTS=$TEST_FS_MOUNT_OPTS
        get_next_config $section
@@ -540,7 +545,7 @@ for section in $HOST_OPTIONS_SECTIONS; do
                        fi
                done
                if $skip; then
-                       continue
+                       return
                fi
        fi
 
@@ -554,7 +559,7 @@ for section in $HOST_OPTIONS_SECTIONS; do
                        fi
                done
                if $skip; then
-                       continue
+                       return
                fi
        fi
 
@@ -700,6 +705,8 @@ for section in $HOST_OPTIONS_SECTIONS; do
                seqres="$REPORT_DIR/$seqnum"
 
                mkdir -p $RESULT_DIR
+               rm -f ${RESULT_DIR}/require_scratch*
+               rm -f ${RESULT_DIR}/require_test*
                echo -n "$seqnum"
 
                if $showme; then
@@ -858,6 +865,12 @@ for section in $HOST_OPTIONS_SECTIONS; do
 
        _test_unmount 2> /dev/null
        _scratch_unmount 2> /dev/null
+}
+
+for ((iters = 0; iters < $iterations; iters++)) do
+       for section in $HOST_OPTIONS_SECTIONS; do
+               run_section $section
+       done
 done
 
 interrupt=false