[PATCH proxmox-backup 6/6] fix #5797: www: display new GarbageCollection maintenance mode

[Robert Obkircher <r.obkircher@proxmox.com>]

Display the new mode and make it selectable. Subtract non-expanding
writes from the number of conflicts, since they are allowed in this
mode.

Fixes: https://bugzilla.proxmox.com/show_bug.cgi?id=5797
Signed-off-by: Robert Obkircher <r.obkircher@proxmox.com>
---
 www/Utils.js                     | 4 ++++
 www/datastore/OptionView.js      | 3 +++
 www/window/MaintenanceOptions.js | 1 +
 3 files changed, 8 insertions(+)

diff --git a/www/Utils.js b/www/Utils.js
index bf4b025c7..fa49fcbf8 100644
--- a/www/Utils.js
+++ b/www/Utils.js
@@ -824,6 +824,7 @@ Ext.define('PBS.Utils', {
         if (activeTasks !== undefined) {
             const conflictingTasks =
                 activeTasks.write +
+                (type === 'garbage-collection' ? -activeTasks.writeNonExpanding : 0) +
                 (type === 'offline' || type === 'unmount' ? activeTasks.read : 0);
 
             if (conflictingTasks > 0) {
@@ -846,6 +847,9 @@ Ext.define('PBS.Utils', {
             case 'read-only':
                 modeText = gettext('Read-only');
                 break;
+            case 'garbage-collection':
+                modeText = gettext('Garbage Collection');
+                break;
             case 'offline':
                 modeText = gettext('Offline');
                 break;
diff --git a/www/datastore/OptionView.js b/www/datastore/OptionView.js
index 64e47aa57..683770738 100644
--- a/www/datastore/OptionView.js
+++ b/www/datastore/OptionView.js
@@ -93,6 +93,7 @@ Ext.define('PBS.Datastore.Options', {
         me.maintenanceActiveTasks = {
             read: 0,
             write: 0,
+            writeNonExpanding: 0,
         };
         me.datastore = encodeURIComponent(me.datastore);
         me.url = `/api2/json/config/datastore/${me.datastore}`;
@@ -125,9 +126,11 @@ Ext.define('PBS.Datastore.Options', {
                 if (success) {
                   activeTasks.read = store.getById('read')?.data.value ?? 0;
                   activeTasks.write = store.getById('write')?.data.value ?? 0;
+                  activeTasks.writeNonExpanding = store.getById('writeNonExpanding')?.data.value ?? 0;
                 } else {
                   activeTasks.read = 0;
                   activeTasks.write = 0;
+                  activeTasks.writeNonExpanding = 0;
                 }
             });
         },
diff --git a/www/window/MaintenanceOptions.js b/www/window/MaintenanceOptions.js
index 9a735e5e8..9228f4ee9 100644
--- a/www/window/MaintenanceOptions.js
+++ b/www/window/MaintenanceOptions.js
@@ -5,6 +5,7 @@ Ext.define('PBS.form.maintenanceType', {
     comboItems: [
         ['__default__', gettext('None')],
         ['read-only', gettext('Read only')],
+        ['garbage-collection', gettext('Garbage Collection')],
         ['offline', gettext('Offline')],
     ],
 });
-- 
2.47.3