fix: volume discovery improvements

Use shared locks, discover more partitions, some other small changes.

Re-enable the flaky test.

Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

go.mod

@@ -128,7 +128,7 @@ require (
 	github.com/siderolabs/gen v0.5.0
 	github.com/siderolabs/go-api-signature v0.3.2
 	github.com/siderolabs/go-blockdevice v0.4.7
-	github.com/siderolabs/go-blockdevice/v2 v2.0.0-20240405165836-3265299b0192
+	github.com/siderolabs/go-blockdevice/v2 v2.0.0-20240604163945-81b69bf28eaa
 	github.com/siderolabs/go-circular v0.2.0
 	github.com/siderolabs/go-cmd v0.1.1
 	github.com/siderolabs/go-copy v0.1.0

go.sum

@@ -661,8 +661,8 @@ github.com/siderolabs/go-api-signature v0.3.2 h1:blqrZF1GM7TWgq7mY7CsR+yQ93u6az0
 github.com/siderolabs/go-api-signature v0.3.2/go.mod h1:punhUOaXa7LELYBRCUhfgUGH6ieVz68GrP98apCKXj8=
 github.com/siderolabs/go-blockdevice v0.4.7 h1:2bk4WpEEflGxjrNwp57ye24Pr+cYgAiAeNMWiQOuWbQ=
 github.com/siderolabs/go-blockdevice v0.4.7/go.mod h1:4PeOuk71pReJj1JQEXDE7kIIQJPVe8a+HZQa+qjxSEA=
-github.com/siderolabs/go-blockdevice/v2 v2.0.0-20240405165836-3265299b0192 h1:16/cHDGhTUDBtfIftOkuHWhJcQdpa/FwwWPcTq4aOxc=
-github.com/siderolabs/go-blockdevice/v2 v2.0.0-20240405165836-3265299b0192/go.mod h1:UBbbc+L7hU0UggOQeKCA+Qp3ImGkSeaLfVOiCbxRxEI=
+github.com/siderolabs/go-blockdevice/v2 v2.0.0-20240604163945-81b69bf28eaa h1:OjQLrcis/GuqaqxnIw2dxp4ZzT/zk5p1GI3NxcMxkrA=
+github.com/siderolabs/go-blockdevice/v2 v2.0.0-20240604163945-81b69bf28eaa/go.mod h1:5GnL7VLNp5/vgiwYP74fi6KuTUfqGcRxQxtto2tzD+I=
 github.com/siderolabs/go-circular v0.2.0 h1:Xca8zrjF/YsujLbwDSojkKzJe7ngetnpuIJn8N78DJI=
 github.com/siderolabs/go-circular v0.2.0/go.mod h1:rrYCwHLYWmxqrmZP+LjYtwB2a55lxzQi0Ztu1VpWZSc=
 github.com/siderolabs/go-cmd v0.1.1 h1:nTouZUSxLeiiEe7hFexSVvaTsY/3O8k1s08BxPRrsps=

internal/app/machined/pkg/controllers/block/discovery.go

@@ -6,6 +6,7 @@ package block
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"path/filepath"
 	"strconv"
@@ -74,11 +75,17 @@ func (ctrl *DiscoveryController) Run(ctx context.Context, r controller.Runtime,
 				continue
 			}
 
-			if err := ctrl.rescan(ctx, r, logger, maps.Keys(nextRescan)); err != nil {
-				return fmt.Errorf("failed to rescan devices: %w", err)
-			}
+			logger.Debug("rescanning devices", zap.Strings("devices", maps.Keys(nextRescan)))
 
-			nextRescan = map[string]int{}
+			if nextRescanBatch, err := ctrl.rescan(ctx, r, logger, maps.Keys(nextRescan)); err != nil {
+				return fmt.Errorf("failed to rescan devices: %w", err)
+			} else {
+				nextRescan = map[string]int{}
+
+				for id := range nextRescanBatch {
+					nextRescan[id] = lastObservedGenerations[id]
+				}
+			}
 		case <-r.EventCh():
 			devices, err := safe.ReaderListAll[*block.Device](ctx, r)
 			if err != nil {
@@ -125,10 +132,11 @@ func (ctrl *DiscoveryController) Run(ctx context.Context, r controller.Runtime,
 	}
 }
 
-//nolint:gocyclo
-func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtime, logger *zap.Logger, ids []string) error {
+//nolint:gocyclo,cyclop
+func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtime, logger *zap.Logger, ids []string) (map[string]struct{}, error) {
 	failedIDs := map[string]struct{}{}
 	touchedIDs := map[string]struct{}{}
+	nextRescan := map[string]struct{}{}
 
 	for _, id := range ids {
 		device, err := safe.ReaderGetByID[*block.Device](ctx, r, id)
@@ -139,18 +147,27 @@ func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtim
 				continue
 			}
 
-			return fmt.Errorf("failed to get device: %w", err)
+			return nil, fmt.Errorf("failed to get device: %w", err)
 		}
 
-		info, err := blkid.ProbePath(filepath.Join("/dev", id))
+		info, err := blkid.ProbePath(filepath.Join("/dev", id), blkid.WithProbeLogger(logger.With(zap.String("device", id))))
 		if err != nil {
-			logger.Debug("failed to probe device", zap.String("id", id), zap.Error(err))
+			if errors.Is(err, blkid.ErrFailedLock) {
+				// failed to lock the blockdevice, retry later
+				logger.Debug("failed to lock device, retrying later", zap.String("id", id))
 
-			failedIDs[id] = struct{}{}
+				nextRescan[id] = struct{}{}
+			} else {
+				logger.Debug("failed to probe device", zap.String("id", id), zap.Error(err))
+
+				failedIDs[id] = struct{}{}
+			}
 
 			continue
 		}
 
+		logger.Debug("probed device", zap.String("id", id), zap.Any("info", info))
+
 		if err = safe.WriterModify(ctx, r, block.NewDiscoveredVolume(block.NamespaceName, id), func(dv *block.DiscoveredVolume) error {
 			dv.TypedSpec().Type = device.TypedSpec().Type
 			dv.TypedSpec().DevicePath = device.TypedSpec().DevicePath
@@ -164,7 +181,7 @@ func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtim
 
 			return nil
 		}); err != nil {
-			return fmt.Errorf("failed to write discovered volume: %w", err)
+			return nil, fmt.Errorf("failed to write discovered volume: %w", err)
 		}
 
 		touchedIDs[id] = struct{}{}
@@ -178,6 +195,11 @@ func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtim
 				dv.TypedSpec().Parent = id
 
 				dv.TypedSpec().Size = nested.ProbedSize
+
+				if dv.TypedSpec().Size == 0 {
+					dv.TypedSpec().Size = nested.PartitionSize
+				}
+
 				dv.TypedSpec().SectorSize = info.SectorSize
 				dv.TypedSpec().IOSize = info.IOSize
 
@@ -205,7 +227,7 @@ func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtim
 
 				return nil
 			}); err != nil {
-				return fmt.Errorf("failed to write discovered volume: %w", err)
+				return nil, fmt.Errorf("failed to write discovered volume: %w", err)
 			}
 
 			touchedIDs[partID] = struct{}{}
@@ -215,7 +237,7 @@ func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtim
 	// clean up discovered volumes
 	discoveredVolumes, err := safe.ReaderListAll[*block.DiscoveredVolume](ctx, r)
 	if err != nil {
-		return fmt.Errorf("failed to list discovered volumes: %w", err)
+		return nil, fmt.Errorf("failed to list discovered volumes: %w", err)
 	}
 
 	for iterator := discoveredVolumes.Iterator(); iterator.Next(); {
@@ -238,12 +260,12 @@ func (ctrl *DiscoveryController) rescan(ctx context.Context, r controller.Runtim
 		if isFailed || parentTouched {
 			// if the probe failed, or if the parent was touched, while this device was not, remove it
 			if err = r.Destroy(ctx, dv.Metadata()); err != nil {
-				return fmt.Errorf("failed to destroy discovered volume: %w", err)
+				return nil, fmt.Errorf("failed to destroy discovered volume: %w", err)
 			}
 		}
 	}
 
-	return nil
+	return nextRescan, nil
 }
 
 func (ctrl *DiscoveryController) fillDiscoveredVolumeFromInfo(dv *block.DiscoveredVolume, info blkid.ProbeResult) {

internal/integration/api/volumes.go

@@ -44,13 +44,18 @@ func (suite *VolumesSuite) TearDownTest() {
 
 // TestDiscoveredVolumes verifies that standard Talos partitions are discovered.
 func (suite *VolumesSuite) TestDiscoveredVolumes() {
-	suite.T().Skip("skipping test, as it's flaky (going to address it later)")
-
 	if !suite.Capabilities().SupportsVolumes {
 		suite.T().Skip("cluster doesn't support volumes")
 	}
 
-	node := suite.RandomDiscoveredNodeInternalIP()
+	for _, node := range suite.DiscoverNodeInternalIPs(suite.ctx) {
+		suite.Run(node, func() {
+			suite.testDiscoveredVolumes(node)
+		})
+	}
+}
+
+func (suite *VolumesSuite) testDiscoveredVolumes(node string) {
 	ctx := client.WithNode(suite.ctx, node)
 
 	volumes, err := safe.StateListAll[*block.DiscoveredVolume](ctx, suite.Client.COSI)
@@ -59,7 +64,9 @@ func (suite *VolumesSuite) TestDiscoveredVolumes() {
 	expectedVolumes := map[string]struct {
 		Name string
 	}{
-		"META": {},
+		"META": {
+			Name: "talosmeta",
+		},
 		"STATE": {
 			Name: "xfs",
 		},
@@ -71,12 +78,12 @@ func (suite *VolumesSuite) TestDiscoveredVolumes() {
 	for iterator := volumes.Iterator(); iterator.Next(); {
 		dv := iterator.Value()
 
-		suite.T().Logf("Volume: %s %s %s %s", dv.Metadata().ID(), dv.TypedSpec().Name, dv.TypedSpec().PartitionLabel, dv.TypedSpec().Label)
+		suite.T().Logf("volume: %s %s %s %s", dv.Metadata().ID(), dv.TypedSpec().Name, dv.TypedSpec().PartitionLabel, dv.TypedSpec().Label)
 
 		partitionLabel := dv.TypedSpec().PartitionLabel
 		filesystemLabel := dv.TypedSpec().Label
 
-		// this is encrypted partition, skip it, we should see another device with actual filesystem
+		// this is encrypted partition, skip it, we should see another device with the actual filesystem
 		if dv.TypedSpec().Name == "luks" {
 			continue
 		}
@@ -95,12 +102,16 @@ func (suite *VolumesSuite) TestDiscoveredVolumes() {
 			}
 		}
 
-		suite.Assert().Equal(expected.Name, dv.TypedSpec().Name)
+		suite.Assert().Equal(expected.Name, dv.TypedSpec().Name, "node: ", node)
 
 		delete(expectedVolumes, id)
 	}
 
-	suite.Assert().Empty(expectedVolumes)
+	suite.Assert().Empty(expectedVolumes, "node: ", node)
+
+	if suite.T().Failed() {
+		suite.DumpLogs(suite.ctx, node, "controller-runtime", "block.")
+	}
 }
 
 func init() {

internal/integration/base/api.go

@@ -32,6 +32,7 @@ import (
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
 	"github.com/siderolabs/talos/pkg/cluster"
 	"github.com/siderolabs/talos/pkg/cluster/check"
+	"github.com/siderolabs/talos/pkg/machinery/api/common"
 	machineapi "github.com/siderolabs/talos/pkg/machinery/api/machine"
 	"github.com/siderolabs/talos/pkg/machinery/client"
 	clientconfig "github.com/siderolabs/talos/pkg/machinery/client/config"
@@ -748,6 +749,34 @@ waitLoop:
 	}
 }
 
+// DumpLogs dumps a set of logs from the node.
+func (apiSuite *APISuite) DumpLogs(ctx context.Context, node string, service, pattern string) {
+	nodeCtx := client.WithNode(ctx, node)
+
+	logsStream, err := apiSuite.Client.Logs(
+		nodeCtx,
+		constants.SystemContainerdNamespace,
+		common.ContainerDriver_CONTAINERD,
+		service,
+		false,
+		-1,
+	)
+	apiSuite.Require().NoError(err)
+
+	logReader, err := client.ReadStream(logsStream)
+	apiSuite.Require().NoError(err)
+
+	defer logReader.Close() //nolint:errcheck
+
+	scanner := bufio.NewScanner(logReader)
+
+	for scanner.Scan() {
+		if pattern == "" || strings.Contains(scanner.Text(), pattern) {
+			apiSuite.T().Logf("%s (%s): %s", node, service, scanner.Text())
+		}
+	}
+}
+
 // TearDownSuite closes Talos API client.
 func (apiSuite *APISuite) TearDownSuite() {
 	if apiSuite.Client != nil {

internal/integration/base/k8s.go

@@ -228,6 +228,27 @@ func (k8sSuite *K8sSuite) WaitForPodToBeRunning(ctx context.Context, timeout tim
 	}
 }
 
+// LogPodLogs logs the logs of the pod with the given namespace and name.
+func (k8sSuite *K8sSuite) LogPodLogs(ctx context.Context, namespace, podName string) {
+	ctx, cancel := context.WithTimeout(ctx, time.Minute)
+	defer cancel()
+
+	req := k8sSuite.Clientset.CoreV1().Pods(namespace).GetLogs(podName, &corev1.PodLogOptions{})
+
+	readCloser, err := req.Stream(ctx)
+	if err != nil {
+		k8sSuite.T().Logf("failed to get pod logs: %s", err)
+	}
+
+	defer readCloser.Close() //nolint:errcheck
+
+	scanner := bufio.NewScanner(readCloser)
+
+	for scanner.Scan() {
+		k8sSuite.T().Logf("%s/%s: %s", namespace, podName, scanner.Text())
+	}
+}
+
 // WaitForPodToBeDeleted waits for the pod with the given namespace and name to be deleted.
 func (k8sSuite *K8sSuite) WaitForPodToBeDeleted(ctx context.Context, timeout time.Duration, namespace, podName string) error {
 	ctx, cancel := context.WithTimeout(ctx, timeout)

internal/integration/k8s/tink.go

@@ -157,7 +157,13 @@ func (suite *TinkSuite) TestDeploy() {
 	cpCfgBytes, err := cpCfg.Bytes()
 	suite.Require().NoError(err)
 
-	suite.waitForEndpointReady(talosEndpoint)
+	readyErr := suite.waitForEndpointReady(talosEndpoint)
+
+	if readyErr != nil {
+		suite.LogPodLogs(ctx, namespace, ss+"-0")
+	}
+
+	suite.Require().NoError(readyErr)
 
 	insecureClient, err := client.New(ctx,
 		client.WithEndpoints(talosEndpoint),
@@ -182,7 +188,13 @@ func (suite *TinkSuite) TestDeploy() {
 
 	suite.T().Logf("talosconfig = %s", string(ensure.Value(talosconfig.Bytes())))
 
-	suite.waitForEndpointReady(talosEndpoint)
+	readyErr = suite.waitForEndpointReady(talosEndpoint)
+
+	if readyErr != nil {
+		suite.LogPodLogs(ctx, namespace, ss+"-0")
+	}
+
+	suite.Require().NoError(readyErr)
 
 	talosClient, err := client.New(ctx,
 		client.WithConfigContext(talosconfig.Contexts[talosconfig.Context]),
@@ -246,8 +258,8 @@ func (access *tinkClusterAccess) NodesByType(typ machine.Type) []cluster.NodeInf
 	}
 }
 
-func (suite *TinkSuite) waitForEndpointReady(endpoint string) {
-	suite.Require().NoError(retry.Constant(30*time.Second, retry.WithUnits(10*time.Millisecond)).Retry(func() error {
+func (suite *TinkSuite) waitForEndpointReady(endpoint string) error {
+	return retry.Constant(30*time.Second, retry.WithUnits(10*time.Millisecond)).Retry(func() error {
 		c, err := tls.Dial("tcp", endpoint,
 			&tls.Config{
 				InsecureSkipVerify: true,
@@ -259,7 +271,7 @@ func (suite *TinkSuite) waitForEndpointReady(endpoint string) {
 		}
 
 		return retry.ExpectedError(err)
-	}))
+	})
 }
 
 func (suite *TinkSuite) getTinkManifests(namespace, serviceName, ssName, talosImage string) []unstructured.Unstructured {