[pve-devel] [PATCH v2 container 1/2] fix #1451: add mountoptions to container config

[Oguz Bektas]

adds a mountoptions parameter in container config, which allows
passing arbitrary mount options for the mountpoints and the rootfs.

the format is such:
mountoptions=option;option;option;...

for example:

mp0: local-lvm:vm-1500-disk-1,mp=/etc/test1,mountoptions=strictatime;noexec;nodev,quota=1,size=8G

Signed-off-by: Oguz Bektas <o.bektas at proxmox.com>
---
 src/PVE/LXC.pm        | 12 ++++++++++--
 src/PVE/LXC/Config.pm |  7 +++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/PVE/LXC.pm b/src/PVE/LXC.pm
index 62b6b8c..3f4c533 100644
--- a/src/PVE/LXC.pm
+++ b/src/PVE/LXC.pm
@@ -1415,11 +1415,19 @@ sub mountpoint_mount {
 
     die "unknown snapshot path for '$volid'" if !$storage && defined($snapname);
 
-    my $optstring = '';
+    my @mountoptions= split(/;/, $mountpoint->{mountoptions});
+    my $optlist = [];
+    foreach my $opt (@mountoptions) {
+	push @$optlist, $opt;
+    }
+
     my $acl = $mountpoint->{acl};
     if (defined($acl)) {
-	$optstring .= ($acl ? 'acl' : 'noacl');
+	push @$optlist, ($acl ? 'acl' : 'noacl');
     }
+
+    my $optstring = '';
+    $optstring = join(',', @$optlist);
     my $readonly = $mountpoint->{ro};
 
     my @extra_opts;
diff --git a/src/PVE/LXC/Config.pm b/src/PVE/LXC/Config.pm
index 8dcd73c..99efb54 100644
--- a/src/PVE/LXC/Config.pm
+++ b/src/PVE/LXC/Config.pm
@@ -236,6 +236,13 @@ my $rootfs_desc = {
 	description => 'Explicitly enable or disable ACL support.',
 	optional => 1,
     },
+    mountoptions => {
+	optional => 1,
+	type => 'string',
+	description => 'Extra mount options for rootfs/mps.',
+	format_description => 'opt;opt;...',
+	pattern => qr/[a-zA-Z0-9; ]+/,
+    },
     ro => {
 	type => 'boolean',
 	description => 'Read-only mount point',
-- 
2.11.0