Virtualization tab, phase 1: Incus per machine — detect, install, instances, consoles, snapshots, images

The tab reports one of four states for the selected machine (ready, repair, installable, unavailable) from what it finds — /dev/kvm, the package manager's incus candidate, the pool drivers the kernel has — and acts on that machine only. Install is one followed task: packages, a pool whose backing file sits in Ham Lab's own virt/ folder (zfs pool on a file, btrfs on a loop mount, or a plain dir), a bridge on a subnet picked clear of the machine's routes and Docker's pools (never 10.x on a /8 LAN), the DOCKER-USER rules that keep Docker's FORWARD drop off the bridge, the incus-admin group for Ham Lab's account, and a restart. Instances list with live CPU and memory, create from the images: catalogue or a local image (container or VM, limits, cloud-init), start/stop/restart/force-stop/rename/ delete, console and shell as terminal tabs, snapshots with Incus's own schedule and expiry, limits editing. Images: local store, catalogue search and download (exported into the library too), import a tarball or a VM disk from a path, publish an instance. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-10-09 14:09:56 -07:00
parent af53b45b67
commit 240129c83f
9 changed files with 2311 additions and 3 deletions
@@ -0,0 +1,41 @@
+package incus
+
+import (
+	"net/netip"
+	"testing"
+)
+
+func TestPickSubnetAvoidsTaken(t *testing.T) {
+	taken := []netip.Prefix{
+		netip.MustParsePrefix("10.0.0.0/8"),      // the LAN, a /8
+		netip.MustParsePrefix("172.16.100.0/24"), // first choice gone
+		netip.MustParsePrefix("172.16.101.0/24"), // and the second
+		netip.MustParsePrefix("172.28.0.0/14"),   // Docker's configured pool
+		netip.MustParsePrefix("192.168.80.0/20"), // a Docker network
+	}
+	got := PickSubnet(taken)
+	if got.String() != "172.16.102.0/24" {
+		t.Fatalf("got %s", got)
+	}
+	if Gateway(got) != "172.16.102.1/24" {
+		t.Fatalf("gateway %s", Gateway(got))
+	}
+}
+
+func TestPickSubnetWholeBlockTaken(t *testing.T) {
+	// 172.16.0.0/12 covers every 172.16.x candidate; the picker must move to 192.168
+	got := PickSubnet([]netip.Prefix{netip.MustParsePrefix("172.16.0.0/12")})
+	if got.String() != "192.168.254.0/24" {
+		t.Fatalf("got %s", got)
+	}
+}
+
+func TestOverlapsEitherWay(t *testing.T) {
+	a := netip.MustParsePrefix("172.16.5.0/24")
+	if !overlaps(a, netip.MustParsePrefix("172.16.0.0/12")) || !overlaps(netip.MustParsePrefix("172.16.0.0/12"), a) {
+		t.Fatal("a /24 inside a /12 overlaps both ways")
+	}
+	if overlaps(a, netip.MustParsePrefix("172.16.6.0/24")) {
+		t.Fatal("neighbours do not overlap")
+	}
+}