[pve-devel] [PATCH qemu-server] qemu-img convert: use cache=none

[Fabian Grünbichler]

this fixes an issue with zvols, which require cache=none and eat up all
free memory as buffered pages otherwise

https://github.com/zfsonlinux/zfs/issues/7235

Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
---
 PVE/QemuServer.pm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 061effa..e4b090b 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -6146,6 +6146,7 @@ sub qemu_img_convert {
 	my $cmd = [];
 	push @$cmd, '/usr/bin/qemu-img', 'convert', '-p', '-n';
 	push @$cmd, '-s', $snapname if($snapname && $src_format eq "qcow2");
+	push @$cmd, '-t', 'none', '-T', 'none',
 	push @$cmd, '-f', $src_format, '-O', $dst_format, $src_path;
 	if ($is_zero_initialized) {
 	    push @$cmd, "zeroinit:$dst_path";
-- 
2.14.2