Disable ztest deadman timer

The ztest deadman timer has been causing false positives in the
testing VMs.  To make it easier to spot possible regressions
I'm disabling this timer.  The buildbot test infrastructure
will still mark ztest instances which take to long to complete
as failures.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1018

diff --git a/cmd/ztest/ztest.c b/cmd/ztest/ztest.c
index 4479c5939218f1c9da0697c2d486e86babb78993..7e941b5cb29054a1fff8f8a8b33276989e1b182f 100644 (file)
--- a/cmd/ztest/ztest.c
+++ b/cmd/ztest/ztest.c
@@ -5289,11 +5289,13 @@ ztest_resume_thread(void *arg)
 
 #define GRACE  300
 
+#if 0
 static void
 ztest_deadman_alarm(int sig)
 {
        fatal(0, "failed to complete within %d seconds of deadline", GRACE);
 }
+#endif
 
 static void
 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
@@ -5550,11 +5552,13 @@ ztest_run(ztest_shared_t *zs)
            (thread_func_t)ztest_resume_thread, spa, TS_RUN, NULL, 0, 0,
            PTHREAD_CREATE_JOINABLE)), !=, NULL);
 
+#if 0
        /*
         * Set a deadman alarm to abort() if we hang.
         */
        signal(SIGALRM, ztest_deadman_alarm);
        alarm((zs->zs_thread_stop - zs->zs_thread_start) / NANOSEC + GRACE);
+#endif
 
        /*
         * Verify that we can safely inquire about about any object,