cloud init: add comment regarding 3 MiB size limit

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Originally-by: Mira Limbeck <m.limbeck@proxmox.com>

diff --git a/PVE/QemuServer/Cloudinit.pm b/PVE/QemuServer/Cloudinit.pm
index 420566e798ea607517e5974bdfeb3c87f2e960e3..cc8970cbc97de2d4b28feb5a68347c900da2777c 100644 (file)
--- a/PVE/QemuServer/Cloudinit.pm
+++ b/PVE/QemuServer/Cloudinit.pm
@@ -235,6 +235,8 @@ sub generate_configdrive2 {
        $meta_data = configdrive2_gen_metadata($user_data, $network_data);
     }
 
+    # we always allocate a 4MiB disk for cloudinit and with the overhead of the ISO
+    # make sure we always stay below it by keeping the sum of all files below 3 MiB
     my $sum = length($user_data) + length($network_data) + length($meta_data) + length($vendor_data);
     die "Cloud-Init sum of snippets too big (> 3 MiB)\n" if $sum > (3 * 1024 * 1024);
 
@@ -489,6 +491,8 @@ sub generate_nocloud {
        $meta_data = nocloud_gen_metadata($user_data, $network_data);
     }
 
+    # we always allocate a 4MiB disk for cloudinit and with the overhead of the ISO
+    # make sure we always stay below it by keeping the sum of all files below 3 MiB
     my $sum = length($user_data) + length($network_data) + length($meta_data) + length($vendor_data);
     die "Cloud-Init sum of snippets too big (> 3 MiB)\n" if $sum > (3 * 1024 * 1024);