From f0a37310a54b5e421264d05a02ad226a1409bb98 Mon Sep 17 00:00:00 2001
From: Attie Grande <attie@attie.co.uk>
Date: Fri, 9 Mar 2018 15:18:03 +0000
Subject: [PATCH] implemented sync true/false/${HOSTS} filtering

---
 syncoid | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/syncoid b/syncoid
index 20c0853..7877723 100755
--- a/syncoid
+++ b/syncoid
@@ -183,9 +183,20 @@ sub syncdataset {
 
 	if ($debug) { print "DEBUG: syncing source $sourcefs to target $targetfs.\n"; }
 
-	if (getzfsvalue($sourcehost,$sourcefs,$sourceisroot,'syncoid:sync') eq 'false') {
+	my $sync = getzfsvalue($sourcehost,$sourcefs,$sourceisroot,'syncoid:sync');
+
+	if ($sync eq 'true' || $sync eq '-') {
+		# definitely sync this dataset - if a host is called 'true' or '-', then you're special
+	} elsif ($sync eq 'false') {
 		if (!$quiet) { print "INFO: Skipping dataset (syncoid:sync=false): $sourcefs...\n"; }
 		return 0;
+	} else {
+		my $hostid = hostname();
+		my @hosts = split(/,/,$sync);
+		if (!(grep $hostid eq $_, @hosts)) {
+			if (!$quiet) { print "INFO: Skipping dataset (syncoid:sync doesn't include $hostid): $sourcefs...\n"; }
+			return 0;
+		}
 	}
 
 	# make sure target is not currently in receive.