linux-kernel - [PATCH rcu 4/8] torture: Retry download once before giving up

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Message-Id: <20211202004634.3130489-4-paulmck@kernel.org>
Date:   Wed,  1 Dec 2021 16:46:30 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, akpm@...ux-foundation.org,
        mathieu.desnoyers@...icios.com, josh@...htriplett.org,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
        dhowells@...hat.com, edumazet@...gle.com, fweisbec@...il.com,
        oleg@...hat.com, joel@...lfernandes.org,
        "Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH rcu 4/8] torture: Retry download once before giving up

Currently, a transient network error can kill a run if it happens while
downloading the tarball to one of the target systems.  This commit
therefore does a 60-second wait and then a retry.  If further experience
indicates, a more elaborate mechanism might be used later.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 tools/testing/selftests/rcutorture/bin/kvm-remote.sh | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm-remote.sh b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh
index c7d42ef80c534..67ebc56111e3f 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-remote.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh
@@ -157,8 +157,15 @@ do
 	ret=$?
 	if test "$ret" -ne 0
 	then
-		echo Unable to download $T/binres.tgz to system $i, giving up. | tee -a "$oldrun/remote-log"
-		exit 10 | tee -a "$oldrun/remote-log"
+		echo Unable to download $T/binres.tgz to system $i, waiting and then retrying. | tee -a "$oldrun/remote-log"
+		sleep 60
+		cat $T/binres.tgz | ssh $i "cd /tmp; tar -xzf -"
+		ret=$?
+		if test "$ret" -ne 0
+		then
+			echo Unable to download $T/binres.tgz to system $i, giving up. | tee -a "$oldrun/remote-log"
+			exit 10
+		fi
 	fi
 done
 
-- 
2.31.1.189.g2e36527f23