[PATCH cluster v6 02/18] datacenter config: add unique subproperty to next-id

["Michael Köppl" <m.koeppl@proxmox.com>]

Add 'unique' as a subproperty to next-id config schema. It controls
whether only unique (i.e. neither currently nor previously in use)
guest IDs should be suggested by the `/cluster/nextid` API endpoint.

Signed-off-by: Michael Köppl <m.koeppl@proxmox.com>
---
 src/PVE/DataCenterConfig.pm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/PVE/DataCenterConfig.pm b/src/PVE/DataCenterConfig.pm
index 004122e..4a58efe 100644
--- a/src/PVE/DataCenterConfig.pm
+++ b/src/PVE/DataCenterConfig.pm
@@ -217,6 +217,13 @@ my $next_id_format = {
         default => 1000 * 1000, # lower than the maximum on purpose
         optional => 1,
     },
+    unique => {
+        type => 'boolean',
+        description => "Only suggest guest IDs that are neither currently in use"
+            . " nor have previously been used.",
+        default => 0,
+        optional => 1,
+    },
 };
 
 my $u2f_format = {
-- 
2.47.3