From ec7858c1c7db24a445212b007bc84b52eae664b4 Mon Sep 17 00:00:00 2001
From: Jim Salter <jim.salter.jrs@gmail.com>
Date: Fri, 8 Apr 2022 20:57:53 +0000
Subject: [PATCH] don't use resume tokens for purely local replication

---
 syncoid | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/syncoid b/syncoid
index 3f112de..a6d2c3e 100755
--- a/syncoid
+++ b/syncoid
@@ -340,7 +340,10 @@ sub syncdataset {
 
 	my $receiveextraargs = "";
 	my $receivetoken;
-	if ($resume) {
+
+	# we need to make sure this isn't a local-only replication before trying to use resume tokens.
+	# trying to receive using -s on a stream sent from another dataset on the same host produces ZFS errors. (Discovered on 2022-04-08 on an Ubuntu 20.04 system)
+	if ($resume && ($sourcehost ne $targethost)) {
 		# save state of interrupted receive stream
 		$receiveextraargs = "-s";