Add pool information to VM metrics

- Parse /etc/pve/user.cfg to extract pool membership for VMs
- Add pool-related labels to pve_kvm info metrics:
  - pool: Full hierarchical pool name
  - pool_levels: Number of pool hierarchy levels
  - pool1/pool2/pool3: Individual pool hierarchy levels
- Cache pool data based on file modification time to avoid repeated reads

LICENSE

@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (c) 2024 Harikrishnan R
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

flake.lock

@@ -3,11 +3,11 @@
     "debBundler": {
       "flake": false,
       "locked": {
-        "lastModified": 1746317543,
-        "narHash": "sha256-1Xph5g1Lazzkc9XuY1nOkG5Fn7+lmSdldAC91boDawY=",
+        "lastModified": 1725149456,
+        "narHash": "sha256-rRrSD7itoPm+VIT4bIzSupQ7jw+H4eOjxRiRA89Kxb4=",
         "owner": "illustris",
         "repo": "flake",
-        "rev": "e86bd104d76d22b2ba36fede405e7bff290ef489",
+        "rev": "257a6c986cb9a67c4d6d0e0363507cab7f958b63",
         "type": "github"
       },
       "original": {
@@ -18,11 +18,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1746663147,
-        "narHash": "sha256-Ua0drDHawlzNqJnclTJGf87dBmaO/tn7iZ+TCkTRpRc=",
+        "lastModified": 1725103162,
+        "narHash": "sha256-Ym04C5+qovuQDYL/rKWSR+WESseQBbNAe5DsXNx5trY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "dda3dcd3fe03e991015e9a74b22d35950f264a54",
+        "rev": "12228ff1752d7b7624a54e9c1af4b222b3c1073b",
         "type": "github"
       },
       "original": {

flake.nix

@@ -14,7 +14,7 @@ rec {
 		packages.x86_64-linux = with nixpkgs.legacyPackages.x86_64-linux; rec {
 			pvemon = python3Packages.buildPythonApplication {
 				pname = "pvemon";
-				version = "1.3.3";
+				version = "1.2.0";
 				src = ./src;
 				propagatedBuildInputs = with python3Packages; [
 					pexpect

src/pvemon/__init__.py

@@ -34,7 +34,6 @@ pool_cache = {
 DEFAULT_PORT = 9116
 DEFAULT_INTERVAL = 10
 DEFAULT_PREFIX = "pve"
-DEFAULT_HOST = "0.0.0.0"
 
 gauge_settings = [
     ('kvm_cpu', 'CPU time for VM', ['id', 'mode']),
@@ -354,7 +353,6 @@ class PVECollector(object):
 def main():
     parser = argparse.ArgumentParser(description='PVE metrics exporter for Prometheus')
     parser.add_argument('--port', type=int, default=DEFAULT_PORT, help='Port for the exporter to listen on')
-    parser.add_argument('--host', type=str, default=DEFAULT_HOST, help='Host address to bind the exporter to')
     parser.add_argument('--interval', type=int, default=DEFAULT_INTERVAL, help='THIS OPTION DOES NOTHING')
     parser.add_argument('--collect-running-vms', type=str, default='true', help='Enable or disable collecting running VMs metric (true/false)')
     parser.add_argument('--collect-storage', type=str, default='true', help='Enable or disable collecting storage info (true/false)')
@@ -390,7 +388,7 @@ def main():
         return
     else:
         REGISTRY.register(PVECollector())
-        start_http_server(cli_args.port, addr=cli_args.host)
+        start_http_server(cli_args.port)
 
     while True:
         time.sleep(100)

src/pvestorage/__init__.py

@@ -65,15 +65,9 @@ def parse_storage_cfg(file_path='/etc/pve/storage.cfg'):
             else:
                 # Parse key-value pairs within the current storage
                 if current_storage:
-                    parts = line.split(None, 1)
-                    key = parts[0].strip()
-                    sanitized_key = sanitize_key(key)
-                    if len(parts) > 1:
-                        # Regular key-value pair
-                        current_storage[sanitized_key] = parts[1].strip()
-                    else:
-                        # Key with no value, set it to True
-                        current_storage[sanitized_key] = True
+                    key, value = line.split(None, 1)
+                    sanitized_key = sanitize_key(key.strip())
+                    current_storage[sanitized_key] = value.strip()
 
     # Append the last storage section to the list if any
     if current_storage:
@@ -87,53 +81,15 @@ def parse_storage_cfg(file_path='/etc/pve/storage.cfg'):
 
 def get_storage_size(storage):
     try:
+        if storage["type"] in ["dir", "nfs", "cephfs", "zfspool"]:
             if storage["type"] == "zfspool":
-            if "pool" not in storage:
-                logging.debug(f"ZFS pool {storage['name']} has no pool name configured")
-                return None
-
-            # Extract the pool name (could be in format like rpool/data)
-            pool_name = storage["pool"].split("/")[0]
-
-            # Use zpool command to get accurate size information
-            import subprocess
-            try:
-                result = subprocess.run(
-                    ["zpool", "list", pool_name, "-p"],
-                    capture_output=True,
-                    text=True,
-                    check=True
-                )
-
-                # Parse the output
-                lines = result.stdout.strip().split("\n")
-                if len(lines) < 2:
-                    logging.warn(f"Unexpected zpool list output format for {pool_name}")
-                    return None
-
-                # Extract values from the second line (the data line)
-                values = lines[1].split()
-                if len(values) < 4:
-                    logging.warn(f"Insufficient data in zpool list output for {pool_name}")
-                    return None
-
-                # Values are: NAME SIZE ALLOC FREE ...
-                # We need the SIZE and FREE values (index 1 and 3)
-                total_size = int(values[1])
-                free_space = int(values[3])
-
-                return {
-                    "total": total_size,
-                    "free": free_space
-                }
-            except (subprocess.SubprocessError, ValueError, IndexError) as e:
-                logging.warn(f"Error running zpool list for {pool_name}: {e}")
-                return None
-
-        elif storage["type"] in ["dir", "nfs", "cephfs"]:
-            # For non-ZFS storage, use statvfs
+                path = storage["mountpoint"]
+            else:
                 path = storage["path"]
+            # Get filesystem statistics
             stats = os.statvfs(path)
+            # Calculate total size and free space in bytes
+            # TODO: find an alternative way to calculate total_size for ZFS
             total_size = stats.f_frsize * stats.f_blocks
             free_space = stats.f_frsize * stats.f_bavail
             return {
@@ -164,12 +120,7 @@ def collect_storage_metrics():
 
     storage_pools = parse_storage_cfg()
     for storage in storage_pools:
-        # Convert any non-string values to strings for InfoMetricFamily
-        storage_info = {}
-        for key, value in storage.items():
-            storage_info[key] = str(value) if not isinstance(value, str) else value
-
-        info_dict["node_storage"].add_metric([], storage_info)
+        info_dict["node_storage"].add_metric([], storage)
         size = get_storage_size(storage)
         if size != None:
             gauge_dict["node_storage_size"].add_metric([storage["name"], storage["type"]], size["total"])

src/setup.py

@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='pvemon',
-    version = "1.3.3",
+    version = "1.2.0",
     packages=find_packages(),
     entry_points={
         'console_scripts': [