From 510becee2f5c35e23c53d42d19fee2856c9b0682 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn?= <bjoern.c3@nixda.biz>
Date: Tue, 17 Jun 2025 13:32:59 +0200
Subject: [PATCH 1/3] get snpshots from list of datasets

query the existing snapshots only from the configured datasets to avoud spinning up disks that are not in the config
---
 sanoid | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sanoid b/sanoid
index 4a71319..aae3b5f 100755
--- a/sanoid
+++ b/sanoid
@@ -883,7 +883,8 @@ sub getsnaps {
 					print "INFO: cache expired - updating from zfs list.\n";
 				}
 			}
-			open FH, "$zfs get -Hrpt snapshot creation |";
+			# just get snapshots from configured datasets to not spin up the disks
+			open FH, "$zfs get -Hrpt snapshot creation ".join(" ",keys %$config)." |";
 			@rawsnaps = <FH>;
 			close FH;
 

From 24b0293b0fc4079498512dae80964600350dc3ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn?= <bjoern.riemer@web.de>
Date: Mon, 25 Aug 2025 17:52:48 +0200
Subject: [PATCH 2/3] fallback to old zfs list snapshot method in case of error

---
 sanoid | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sanoid b/sanoid
index aae3b5f..895ede3 100755
--- a/sanoid
+++ b/sanoid
@@ -887,7 +887,13 @@ sub getsnaps {
 			open FH, "$zfs get -Hrpt snapshot creation ".join(" ",keys %$config)." |";
 			@rawsnaps = <FH>;
 			close FH;
-
+			$exit_code = $? >> 8;
+			if ($exit_code != 0) {
+				print "INFO: zfs list shapshots with dataset names does not work.. retrying without dataset names (this will spin-up all disks)\n";
+				open FH, "$zfs get -Hrpt snapshot creation |";
+				@rawsnaps = <FH>;
+				close FH;
+			}
 			open FH, "> $cache.tmp" or die "Could not write to $cache.tmp!\n";
 			print FH @rawsnaps;
 			close FH;

From 1c6d7d6459831d408a44ec27f5120500ebb592dd Mon Sep 17 00:00:00 2001
From: Bjoern Riemer <bjoern.riemer@fokus.fraunhofer.de>
Date: Sun, 9 Nov 2025 22:44:20 +0100
Subject: [PATCH 3/3] onl query not ignored datasets for snapshots

---
 sanoid | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/sanoid b/sanoid
index 895ede3..c052e1c 100755
--- a/sanoid
+++ b/sanoid
@@ -144,6 +144,33 @@ if ($args{'cron'}) {
 exit 0;
 
 
+####################################################################################
+####################################################################################
+####################################################################################
+
+sub get_active_datasets {
+	my ($config, $snaps, $snapsbytype, $snapsbypath) = @_;
+	#my %datestamp = get_date();
+	#my $errlevel = 0;
+	#my $msg;
+	#my @msgs;
+	my @paths;
+
+	foreach my $section (keys %config) {
+		if ($section =~ /^template/) { next; }
+		if (! $config{$section}{'autoprune'}) { next; }
+		if (! $config{$section}{'autosnap'}) { next; }
+		if ($config{$section}{'process_children_only'}) { next; }
+
+		my $path = $config{$section}{'path'};
+		push @paths, $path;
+	}
+
+	my @sorted_paths = sort { lc($a) cmp lc($b) } @paths;
+	my $paths = join (" ", @sorted_paths);
+	return $paths
+}
+
 ####################################################################################
 ####################################################################################
 ####################################################################################
@@ -884,7 +911,7 @@ sub getsnaps {
 				}
 			}
 			# just get snapshots from configured datasets to not spin up the disks
-			open FH, "$zfs get -Hrpt snapshot creation ".join(" ",keys %$config)." |";
+			open FH, "$zfs get -Hrpt snapshot creation ".get_active_datasets(@params)." |";
 			@rawsnaps = <FH>;
 			close FH;
 			$exit_code = $? >> 8;