From 8e20d747c800982fdab480e9fee2171e16d05bbf Mon Sep 17 00:00:00 2001
From: "Ruben S. Montero" <rsmontero@opennebula.org>
Date: Fri, 21 Oct 2022 16:53:22 +0200
Subject: [PATCH] M #-: Increase qemu-img coroutines for backups

Disk images are consolidated and converted to qcow2 format before
backup. This commit increases the number of co-routines to increase the
parallelism of the operation
---
 src/tm_mad/ceph/prebackup       | 2 +-
 src/tm_mad/ceph/prebackup_live  | 2 +-
 src/tm_mad/qcow2/prebackup      | 2 +-
 src/tm_mad/qcow2/prebackup_live | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/tm_mad/ceph/prebackup b/src/tm_mad/ceph/prebackup
index b3986df31e..bd89b66f0a 100755
--- a/src/tm_mad/ceph/prebackup
+++ b/src/tm_mad/ceph/prebackup
@@ -112,7 +112,7 @@ vm.elements.each 'TEMPLATE/DISK' do |d|
 
     expo_cmd << "#{cmd} export #{rbd_src} #{draw}\n"
 
-    conv_cmd << "qemu-img convert -O qcow2 #{draw} #{ddst}\n"
+    conv_cmd << "qemu-img convert -m 4 -O qcow2 #{draw} #{ddst}\n"
 
     clup_cmd << "#{cmd} snap rm #{rbd_src}@backup\n"
     clup_cmd << "rm -f #{draw}\n"
diff --git a/src/tm_mad/ceph/prebackup_live b/src/tm_mad/ceph/prebackup_live
index da56f22874..4b44f43d78 100755
--- a/src/tm_mad/ceph/prebackup_live
+++ b/src/tm_mad/ceph/prebackup_live
@@ -117,7 +117,7 @@ vm.elements.each 'TEMPLATE/DISK' do |d|
     snap_cmd << "#{cmd} snap create #{rbd_src}@backup\n"
     expo_cmd << "#{cmd} export #{rbd_src}@backup #{draw}\n"
 
-    conv_cmd << "qemu-img convert -O qcow2 #{draw} #{ddst}\n"
+    conv_cmd << "qemu-img convert -m 4 -O qcow2 #{draw} #{ddst}\n"
 
     clup_cmd << "#{cmd} snap rm #{rbd_src}@backup\n"
     clup_cmd << "rm -f #{draw}\n"
diff --git a/src/tm_mad/qcow2/prebackup b/src/tm_mad/qcow2/prebackup
index 6b5752db2f..76069a7bf7 100755
--- a/src/tm_mad/qcow2/prebackup
+++ b/src/tm_mad/qcow2/prebackup
@@ -85,7 +85,7 @@ vm.elements.each 'TEMPLATE/DISK' do |d|
     dsrc = "#{rdir}/disk.#{did}"
     ddst = "#{bck_dir}/disk.#{did}"
 
-    convert << "qemu-img convert -O qcow2 #{dsrc} #{ddst}; "
+    convert << "qemu-img convert -m 4 -O qcow2 #{dsrc} #{ddst}; "
 end
 
 pre_script = <<~EOS
diff --git a/src/tm_mad/qcow2/prebackup_live b/src/tm_mad/qcow2/prebackup_live
index 51fad5528c..b99c3d10f8 100755
--- a/src/tm_mad/qcow2/prebackup_live
+++ b/src/tm_mad/qcow2/prebackup_live
@@ -98,7 +98,7 @@ vm.elements.each 'TEMPLATE/DISK' do |d|
     dsrc = "#{rdir}/disk.#{did}"
     ddst = "#{bck_dir}/disk.#{did}"
 
-    convert << "qemu-img convert -O qcow2 #{dsrc} #{ddst}; "
+    convert << "qemu-img convert -m 4 -O qcow2 #{dsrc} #{ddst}; "
 end
 
 freeze, thaw = fsfreeze(vm, deploy_id)