[PATCH manager v9 4/5] fix #7339: lvm: add discard-on-remove option to UI

[Lukas Sichert <l.sichert@proxmox.com>]

The LVM storage plugin can now use the `discard` option of the
`on-volume-remove` property string to discard allocated blocks before
removing an LV.

Expose this option in the LVM storage edit window with a local
`on-remove-discard` checkbox. Serialize the checkbox into the `discard`
property of `on-volume-remove`, and delete the property again when the
option is disabled.

Also rename the `imgdel` task description from "Erase data" to "Destroy
image", since the task can now also discard storage blocks.

Signed-off-by: Lukas Sichert <l.sichert@proxmox.com>
Link: bugzilla.proxmox.com/show_bug.cgi?id=7339
---
 www/manager6/Utils.js           |  2 +-
 www/manager6/storage/LVMEdit.js | 45 +++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/www/manager6/Utils.js b/www/manager6/Utils.js
index 040b5ae0..3088e6a7 100644
--- a/www/manager6/Utils.js
+++ b/www/manager6/Utils.js
@@ -2184,7 +2184,7 @@ Ext.define('PVE.Utils', {
             hastart: ['HA', gettext('Start')],
             hastop: ['HA', gettext('Stop')],
             imgcopy: ['', gettext('Copy data')],
-            imgdel: ['', gettext('Erase data')],
+            imgdel: ['', gettext('Destroy image')],
             lvmcreate: [gettext('LVM Storage'), gettext('Create')],
             lvmremove: ['Volume Group', gettext('Remove')],
             lvmthincreate: [gettext('LVM-Thin Storage'), gettext('Create')],
diff --git a/www/manager6/storage/LVMEdit.js b/www/manager6/storage/LVMEdit.js
index 148f0601..30ae275b 100644
--- a/www/manager6/storage/LVMEdit.js
+++ b/www/manager6/storage/LVMEdit.js
@@ -148,6 +148,39 @@ Ext.define('PVE.storage.LVMInputPanel', {
 
     onlineHelp: 'storage_lvm',
 
+    onGetValues: function (values) {
+        let me = this;
+
+        let onRemove = {};
+        if (values['on-remove-discard']) {
+            onRemove.discard = 1;
+        }
+        delete values['on-remove-discard'];
+
+        let onRemoveString = PVE.Parser.printPropertyString(onRemove);
+        if (onRemoveString !== '') {
+            values['on-volume-remove'] = onRemoveString;
+        } else if (!me.isCreate) {
+            if (!values.delete) {
+                values.delete = [];
+            }
+            values.delete.push('on-volume-remove');
+        }
+
+        return me.callParent([values]);
+    },
+
+    setValues: function (values) {
+        if (values['on-volume-remove']) {
+            let onRemove = PVE.Parser.parsePropertyString(values['on-volume-remove']);
+            values['on-remove-discard'] = onRemove.discard;
+        }
+
+        delete values['on-volume-remove'];
+
+        return this.callParent([values]);
+    },
+
     column1: [
         {
             xtype: 'pveBaseStorageSelector',
@@ -241,5 +274,17 @@ Ext.define('PVE.storage.LVMInputPanel', {
             uncheckedValue: 0,
             fieldLabel: gettext('Wipe Removed Volumes'),
         },
+        {
+            xtype: 'proxmoxcheckbox',
+            name: 'on-remove-discard',
+            uncheckedValue: 0,
+            fieldLabel: gettext('Discard Removed Volumes'),
+            autoEl: {
+                tag: 'div',
+                'data-qtip': gettext(
+                    'Enable to issue discard (TRIM) requests for logical volumes before removing them.',
+                ),
+            },
+        },
     ],
 });
-- 
2.47.3