[pve-devel] [PATCH manager 6/6] ui: osd: mon: mds: warn if stop/destroy actions are problematic

[Aaron Lauterer]

Check if stopping of a service (OSD, MON, MDS) will be problematic for
Ceph. The warning still allows the user to proceed.

Ceph also has a check if the destruction of a MON is okay, so let's use
it.

Instead of the common OK button, label it with `Stop OSD` and so forth
to hopefully reduce the "click OK by habit" incidents.

This will not catch it every time as Ceph can need a few moments after a
change to establish its current status. For example, stopping one of 3
MONs and then right away destroying one of the last two running MONs
will most likely not trigger the warning. Doing so after a few seconds
should show the warning though.

Signed-off-by: Aaron Lauterer <a.lauterer at proxmox.com>
---
 www/manager6/ceph/OSD.js         | 66 ++++++++++++++++------
 www/manager6/ceph/ServiceList.js | 94 +++++++++++++++++++++++++++-----
 2 files changed, 130 insertions(+), 30 deletions(-)

diff --git a/www/manager6/ceph/OSD.js b/www/manager6/ceph/OSD.js
index 27f56760..99791a80 100644
--- a/www/manager6/ceph/OSD.js
+++ b/www/manager6/ceph/OSD.js
@@ -521,23 +521,55 @@ Ext.define('PVE.node.CephOsdTree', {
 	    let me = this;
 	    let vm = this.getViewModel();
 	    let cmd = comp.cmd || comp;
-	    Proxmox.Utils.API2Request({
-                url: "/nodes/" + vm.get('osdhost') + "/ceph/" + cmd,
-		params: { service: "osd." + vm.get('osdid') },
-		waitMsgTarget: me.getView(),
-		method: 'POST',
-		success: function(response, options) {
-		    let upid = response.result.data;
-		    let win = Ext.create('Proxmox.window.TaskProgress', {
-			upid: upid,
-			taskDone: () => { me.reload(); },
-		    });
-		    win.show();
-		},
-		failure: function(response, opts) {
-		    Ext.Msg.alert(gettext('Error'), response.htmlStatus);
-		},
-	    });
+
+	    let doRequest = function() {
+		Proxmox.Utils.API2Request({
+		    url: `/nodes/${vm.get('osdhost')}/ceph/${cmd}`,
+		    params: { service: "osd." + vm.get('osdid') },
+		    waitMsgTarget: me.getView(),
+		    method: 'POST',
+		    success: function(response, options) {
+			let upid = response.result.data;
+			let win = Ext.create('Proxmox.window.TaskProgress', {
+			    upid: upid,
+			    taskDone: () => { me.reload(); },
+			});
+			win.show();
+		    },
+		    failure: function(response, opts) {
+			Ext.Msg.alert(gettext('Error'), response.htmlStatus);
+		    },
+		});
+	    };
+
+	    if (cmd === "stop") {
+		Proxmox.Utils.API2Request({
+		    url: `/nodes/${vm.get('osdhost')}/ceph/osd/${vm.get('osdid')}/ok-to-stop`,
+		    waitMsgTarget: me.getView(),
+		    method: 'GET',
+		    success: function({ result: { data } }) {
+			if (!data.ok_to_stop) {
+			    Ext.Msg.show({
+				title: gettext('Warning'),
+				message: data.status,
+				icon: Ext.Msg.WARNING,
+				buttons: Ext.Msg.OKCANCEL,
+				buttonText: { ok: gettext('Stop OSD') },
+				fn: function(selection) {
+				    if (selection === 'ok') {
+					doRequest();
+				    }
+				},
+			    });
+			} else {
+			    doRequest();
+			}
+		    },
+		    failure: response => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
+		});
+	    } else {
+		doRequest();
+	    }
 	},
 
 	set_selection_status: function(tp, selection) {
diff --git a/www/manager6/ceph/ServiceList.js b/www/manager6/ceph/ServiceList.js
index 9298974e..b1550d6d 100644
--- a/www/manager6/ceph/ServiceList.js
+++ b/www/manager6/ceph/ServiceList.js
@@ -148,19 +148,52 @@ Ext.define('PVE.node.CephServiceController', {
 	    Ext.Msg.alert(gettext('Error'), "entry has no host");
 	    return;
 	}
-	Proxmox.Utils.API2Request({
-				  url: `/nodes/${rec.data.host}/ceph/${cmd}`,
-				  method: 'POST',
-				  params: { service: view.type + '.' + rec.data.name },
-				  success: function(response, options) {
-				      Ext.create('Proxmox.window.TaskProgress', {
-					  autoShow: true,
-					  upid: response.result.data,
-					  taskDone: () => view.rstore.load(),
-				      });
-				  },
-				  failure: (response, _opts) => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
-	});
+	let doRequest = function() {
+	    Proxmox.Utils.API2Request({
+		url: `/nodes/${rec.data.host}/ceph/${cmd}`,
+		method: 'POST',
+		params: { service: view.type + '.' + rec.data.name },
+		success: function(response, options) {
+		    Ext.create('Proxmox.window.TaskProgress', {
+			autoShow: true,
+			upid: response.result.data,
+			taskDone: () => view.rstore.load(),
+		    });
+		},
+		failure: (response, _opts) => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
+	    });
+	};
+	if (cmd === "stop" && ['mon', 'mds'].includes(view.type)) {
+	    Proxmox.Utils.API2Request({
+		url: `/nodes/${rec.data.host}/ceph/${view.type}/${rec.data.name}/ok-to-stop`,
+		method: 'GET',
+		success: function({ result: { data } }) {
+		    let stopText = {
+			mon: gettext('Stop MON'),
+			mds: gettext('Stop MDS'),
+		    };
+		    if (!data.ok_to_stop) {
+			Ext.Msg.show({
+			    title: gettext('Warning'),
+			    message: data.status,
+			    icon: Ext.Msg.WARNING,
+			    buttons: Ext.Msg.OKCANCEL,
+			    buttonText: { ok: stopText[view.type] },
+			    fn: function(selection) {
+				if (selection === 'ok') {
+				    doRequest();
+				}
+			    },
+			});
+		    } else {
+			doRequest();
+		    }
+		},
+		failure: (response, _opts) => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
+	    });
+	} else {
+	    doRequest();
+	}
     },
     onChangeService: function(button) {
 	let me = this;
@@ -273,6 +306,41 @@ Ext.define('PVE.node.CephServiceList', {
 		    taskDone: () => view.rstore.load(),
 		});
 	    },
+	    handler: function(btn, event, rec) {
+		let me = this;
+		let view = me.up('grid');
+		let doRequest = function() {
+		    Proxmox.button.StdRemoveButton.prototype.handler.call(me, btn, event, rec);
+		};
+		if (view.type === 'mon') {
+		    Proxmox.Utils.API2Request({
+			url: `/nodes/${rec.data.host}/ceph/${view.type}/${rec.data.name}/ok-to-rm`,
+			method: 'GET',
+			success: function({ result: { data } }) {
+			    if (!data.ok_to_rm) {
+				Ext.Msg.show({
+				    title: gettext('Warning'),
+				    message: data.status,
+				    icon: Ext.Msg.WARNING,
+				    buttons: Ext.Msg.OKCANCEL,
+				    buttonText: { ok: gettext('Destroy MON') },
+				    fn: function(selection) {
+					if (selection === 'ok') {
+					    doRequest();
+					}
+				    },
+				});
+			    } else {
+				doRequest();
+			    }
+			},
+			failure: (response, _opts) => Ext.Msg.alert(gettext('Error'), response.htmlStatus),
+		    });
+		} else {
+		    doRequest();
+		}
+	    },
+
 	},
 	'-',
 	{
-- 
2.30.2