From 2c009be6cec3c5960e3eb7bee0c00c783c4395f2 Mon Sep 17 00:00:00 2001
From: Orsiris de Jong <ozy@netpower.fr>
Date: Tue, 29 Apr 2025 16:52:20 +0200
Subject: [PATCH] add zstd-medium compression parameter

---
 syncoid | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/syncoid b/syncoid
index 6ef1cf0..15dce0d 100755
--- a/syncoid
+++ b/syncoid
@@ -1150,6 +1150,12 @@ sub compressargset {
                         decomrawcmd => 'zstd',
                         decomargs   => "-T$ncpus -dc",
 		},
+		'zstd-medium' => {
+                        rawcmd      => 'zstd',
+                        args        => "-T$ncpus -8",
+                        decomrawcmd => 'zstd',
+                        decomargs   => "-T$ncpus -dc",
+		},
 		'zstdmt-fast' => {
 			rawcmd      => 'zstdmt',
 			args        => '-3',
@@ -1190,7 +1196,7 @@ sub compressargset {
 
 	if ($value eq 'default') {
 		$value = $DEFAULT_COMPRESSION;
-	} elsif (!(grep $value eq $_, ('gzip', 'pigz-fast', 'pigz-slow', 'zstd-fast', 'zstdmt-fast', 'zstd-slow', 'zstdmt-slow', 'lz4', 'xz', 'lzo', 'default', 'none'))) {
+	} elsif (!(grep $value eq $_, ('gzip', 'pigz-fast', 'pigz-slow', 'zstd-fast', 'zstd-medium', 'zstdmt-fast', 'zstd-slow', 'zstdmt-slow', 'lz4', 'xz', 'lzo', 'default', 'none'))) {
 		writelog('WARN', "Unrecognised compression value $value, defaulting to $DEFAULT_COMPRESSION");
 		$value = $DEFAULT_COMPRESSION;
 	}
@@ -2323,7 +2329,7 @@ syncoid - ZFS snapshot replication tool
 
 Options:
 
-  --compress=FORMAT     Compresses data during transfer. Currently accepted options are gzip, pigz-fast, pigz-slow, zstd-fast, zstdmt-fast, zstd-slow, zstdmt-slow, lz4, xz, lzo (default) & none
+  --compress=FORMAT     Compresses data during transfer. Currently accepted options are gzip, pigz-fast, pigz-slow, zstd-fast, zstd-medium, zstdmt-fast, zstd-slow, zstdmt-slow, lz4, xz, lzo (default) & none
   --identifier=EXTRA    Extra identifier which is included in the snapshot name. Can be used for replicating to multiple targets.
   --recursive|r         Also transfers child datasets
   --skip-parent         Skips syncing of the parent dataset. Does nothing without '--recursive' option.