diskspace@schorschii: Add automatic MD RAID / ZFS / Btrfs status detection

diskspace@schorschii/README.md

@@ -1,9 +1,25 @@
 # Disk Space Desklet
 - displays the usage of a filesystem, swap or RAM
+- monitors MD RAID and ZFS pool status (optional)
 - thick, thin and compact design
 
 ## Installation
 - please make sure the "Ubuntu" font is installed
 
 ## Remote File System
 You can also monitor a remote filesystem (via SSH/SMB). You only need to mount the filesystem from within your file manager (e.g. Nemo) and set the "Filesystem to be monitored" in the desklet seetings to the mount point of the remote file system.
+
+## RAID / ZFS Monitor
+Enable "Show RAID / ZFS status" in the settings to automatically detect if your filesystem resides on an MD RAID array or ZFS pool.
+
+- **MD RAID**: Reads status from `/sys/block/mdX/md/` — shows state (clean, resync, degraded, etc.) and rebuild progress
+- **ZFS**: Uses `zpool status -j` — shows pool state and scrub/resilver progress
+
+Status indicator:
+- ✓ = healthy
+- ⚠ = warning (rebuilding, degraded)
+- ✗ = error (faulted, offline)
+
+Requirements:
+- Python 3 (standard on most Linux systems)
+- `zfsutils-linux` package (for ZFS monitoring, optional)

diskspace@schorschii/files/diskspace@schorschii/desklet.js

@@ -62,6 +62,7 @@ MyDesklet.prototype = {
 		this.settings.bindProperty(Settings.BindingDirection.IN, "type", "type", this.on_setting_changed);
 		this.settings.bindProperty(Settings.BindingDirection.IN, "text-view", "text_view", this.on_setting_changed);
 		this.settings.bindProperty(Settings.BindingDirection.IN, "onclick-action", "onclick_action", this.on_setting_changed);
+		this.settings.bindProperty(Settings.BindingDirection.IN, "show-raid-status", "show_raid_status", this.on_setting_changed);
 		this.settings.bindProperty(Settings.BindingDirection.BIDIRECTIONAL, "random-circle-color-generated", "random_circle_color_generated", this.on_setting_changed);
 		this.settings.bindProperty(Settings.BindingDirection.BIDIRECTIONAL, "random-circle-color-r", "random_circle_color_r", this.on_setting_changed);
 		this.settings.bindProperty(Settings.BindingDirection.BIDIRECTIONAL, "random-circle-color-g", "random_circle_color_g", this.on_setting_changed);
@@ -181,14 +182,47 @@ MyDesklet.prototype = {
 						// e.g. file not found (= not mounted)
 						//global.log("error getting filesystem info: "+fs);
 					}
-					this.redraw(type, fs, avail, use, size, percentString);
+
+					// Check RAID/ZFS status if enabled
+					if(this.show_raid_status) {
+						this.checkRaidStatus(fs, avail, use, size, percentString);
+					} else {
+						this.redraw(type, fs, avail, use, size, percentString, null);
+					}
 				}
 			);
 
 		}
 	},
 
-	redraw: function(type, fs, avail, use, size, percentString) {
+	checkRaidStatus: function(fs, avail, use, size, percentString) {
+		// Automatically detect if the filesystem is on MD RAID or ZFS
+		let scriptPath = this.metadata["path"] + "/raid-detector.py";
+		let self = this;
+		let subprocess = new Gio.Subprocess({
+			argv: ["/usr/bin/python3", scriptPath, fs],
+			flags: Gio.SubprocessFlags.STDOUT_PIPE|Gio.SubprocessFlags.STDERR_PIPE,
+		});
+		subprocess.init(null);
+		subprocess.wait_async(null, (sourceObject, res) => {
+			let [, stdOut, stdErr] = sourceObject.communicate_utf8(null, null);
+			let raidInfo = null;
+			if(stdErr == "" && stdOut != "") {
+				try {
+					raidInfo = JSON.parse(stdOut);
+					// Only use if something was detected
+					if(raidInfo.detected == "none") {
+						raidInfo = null;
+					}
+				} catch(e) {
+					//global.log("RAID detector parse error: " + e);
+				}
+			}
+			self.redraw(self.type, fs, avail, use, size, percentString, raidInfo);
+		});
+	},
+
+	redraw: function(type, fs, avail, use, size, percentString, raidInfo) {
 		// calc new sizes based on scale factor
 		let absoluteSize = this.default_size * this.scale_size;
 		let fontSize = Math.round(this.default_size_font * this.scale_size);
@@ -313,6 +347,65 @@ MyDesklet.prototype = {
 		let textSub1 = "";
 		let textSub2 = "";
 		let name = "";
+
+		// RAID/ZFS/Btrfs status overlay
+		let raidStatusIndicator = "";
+		let raidDetailLine1 = "";
+		let raidDetailLine2 = "";
+		if(raidInfo && raidInfo.status) {
+			if(raidInfo.status == "ok") {
+				raidStatusIndicator = "✓";
+			} else if(raidInfo.status == "warning") {
+				raidStatusIndicator = "⚠";
+				// Show detailed progress info
+				if(raidInfo.mdraid && raidInfo.mdraid.state) {
+					let md = raidInfo.mdraid;
+					if(md.degraded > 0) {
+						raidDetailLine1 = md.degraded + "x degraded";
+					} else if(md.progress > 0) {
+						let stateLabel = md.state.charAt(0).toUpperCase() + md.state.slice(1);
+						raidDetailLine1 = stateLabel + " " + Math.round(md.progress) + "%";
+					} else {
+						let stateLabel = md.state.charAt(0).toUpperCase() + md.state.slice(1);
+						raidDetailLine1 = stateLabel;
+					}
+					if(md.speed != "") {
+						raidDetailLine2 = md.speed;
+					}
+				} else if(raidInfo.zfs && raidInfo.zfs.scan) {
+					let scan = raidInfo.zfs.scan;
+					if(scan.state == "in_progress") {
+						let scanLabel = scan.type.charAt(0).toUpperCase() + scan.type.slice(1);
+						raidDetailLine1 = scanLabel + " " + Math.round(scan.progress) + "%";
+						if(scan.eta != "") {
+							raidDetailLine2 = "ETA " + scan.eta;
+						}
+					} else if(raidInfo.zfs.state == "DEGRADED") {
+						raidDetailLine1 = "ZFS degraded";
+					}
+				} else if(raidInfo.btrfs) {
+					let bt = raidInfo.btrfs;
+					if(bt.errors > 0) {
+						raidDetailLine1 = bt.errors + " errors";
+					} else {
+						raidDetailLine1 = bt.data_profile;
+					}
+					if(bt.devices > 0) {
+						raidDetailLine2 = bt.devices + " devices";
+					}
+				}
+			} else if(raidInfo.status == "error") {
+				raidStatusIndicator = "✗";
+				if(raidInfo.mdraid) {
+					raidDetailLine1 = raidInfo.mdraid.state;
+				} else if(raidInfo.zfs) {
+					raidDetailLine1 = "ZFS " + raidInfo.zfs.state;
+				} else if(raidInfo.btrfs) {
+					raidDetailLine1 = "Btrfs error";
+				}
+			}
+		}
+
 		if(type == "ram") {
 			name = this.shortText(_("RAM"));
 		} else if(type == "swap") {
@@ -349,6 +442,22 @@ MyDesklet.prototype = {
 			textSub2 = "";
 		}
 
+		// Append RAID/ZFS status indicator if detected
+		if(raidStatusIndicator != "") {
+			if(raidDetailLine1 != "") {
+				// Show detailed RAID status for warning/error
+				textSub1 = raidStatusIndicator + " " + raidDetailLine1;
+				textSub2 = raidDetailLine2;
+			} else {
+				// Just show indicator for OK status
+				if(textSub2 != "") {
+					textSub2 = textSub2 + "  " + raidStatusIndicator;
+				} else {
+					textSub2 = raidStatusIndicator + " " + (raidInfo.message || "");
+				}
+			}
+		}
+
 		// set label contents
 		let textpercent_y = Math.round((absoluteSize * global.ui_scale) / 2 - fontSize * (1.26 * global.ui_scale));
 		this.textpercent.set_position(null, textpercent_y);
@@ -370,7 +479,10 @@ MyDesklet.prototype = {
 							+ "font-weight:" + this.fontSub["font-weight"] + ";"
 							+ "font-stretch:" + this.fontSub["font-stretch"] + ";"
 							+ "width: " + absoluteSize + "px;"
-							+ "color: " + this.text_color + ";";
+							+ "color: " + this.text_color + ";"
+							+ "text-align: center;"
+							+ "text-overflow: ellipsis;"
+							+ "overflow: hidden;";
 
 		let textsub2_y = Math.round(textsub_y + fontSizeSub * (1.25 * global.ui_scale));
 		this.textsub2.set_position(null, textsub2_y);
@@ -381,7 +493,10 @@ MyDesklet.prototype = {
 							+ "font-weight:" + this.fontSub["font-weight"] + ";"
 							+ "font-stretch:" + this.fontSub["font-stretch"] + ";"
 							+ "width: " + absoluteSize + "px;"
-							+ "color: " + this.text_color + ";";
+							+ "color: " + this.text_color + ";"
+							+ "text-align: center;"
+							+ "text-overflow: ellipsis;"
+							+ "overflow: hidden;";
 
 		//global.log("Redraw Done"); // debug
 	},

diskspace@schorschii/files/diskspace@schorschii/metadata.json

@@ -1,8 +1,8 @@
 {
     "max-instances": "10",
-    "description": "Displays the usage of a filesystem or RAM.",
-    "name": "Disk Space",
-    "version": "1.20",
+    "description": "Displays the usage of a filesystem or RAM. Optionally shows MD RAID / ZFS status.",
+    "name": "Disk Space + RAID",
+    "version": "1.21-raid",
     "uuid": "diskspace@schorschii",
     "author": "schorschii"
 }