diff --git a/.circleci/config.yml b/.circleci/config.yml
index 593da9cef11..bc108eaa198 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -937,6 +937,11 @@ workflows:
           suite: itest-nonce
           target: "./itests/nonce_test.go"
       
+      - test:
+          name: test-itest-path_detach_redeclare
+          suite: itest-path_detach_redeclare
+          target: "./itests/path_detach_redeclare_test.go"
+      
       - test:
           name: test-itest-path_type_filters
           suite: itest-path_type_filters
diff --git a/api/api_storage.go b/api/api_storage.go
index 3d019bb9e12..ca3905c9559 100644
--- a/api/api_storage.go
+++ b/api/api_storage.go
@@ -155,6 +155,7 @@ type StorageMiner interface {
 
 	// paths.SectorIndex
 	StorageAttach(context.Context, storiface.StorageInfo, fsutil.FsStat) error                                                         //perm:admin
+	StorageDetach(ctx context.Context, id storiface.ID, url string) error                                                              //perm:admin
 	StorageInfo(context.Context, storiface.ID) (storiface.StorageInfo, error)                                                          //perm:admin
 	StorageReportHealth(context.Context, storiface.ID, storiface.HealthReport) error                                                   //perm:admin
 	StorageDeclareSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType, primary bool) error //perm:admin
@@ -182,6 +183,10 @@ type StorageMiner interface {
 
 	StorageAuthVerify(ctx context.Context, token string) ([]auth.Permission, error) //perm:read
 
+	StorageAddLocal(ctx context.Context, path string) error                              //perm:admin
+	StorageDetachLocal(ctx context.Context, path string) error                           //perm:admin
+	StorageRedeclareLocal(ctx context.Context, id *storiface.ID, dropMissing bool) error //perm:admin
+
 	MarketImportDealData(ctx context.Context, propcid cid.Cid, path string) error                                                                                                        //perm:write
 	MarketListDeals(ctx context.Context) ([]*MarketDeal, error)                                                                                                                          //perm:read
 	MarketListRetrievalDeals(ctx context.Context) ([]retrievalmarket.ProviderDealState, error)                                                                                           //perm:read
@@ -279,8 +284,6 @@ type StorageMiner interface {
 	DealsConsiderUnverifiedStorageDeals(context.Context) (bool, error)           //perm:admin
 	DealsSetConsiderUnverifiedStorageDeals(context.Context, bool) error          //perm:admin
 
-	StorageAddLocal(ctx context.Context, path string) error //perm:admin
-
 	PiecesListPieces(ctx context.Context) ([]cid.Cid, error)                                 //perm:read
 	PiecesListCidInfos(ctx context.Context) ([]cid.Cid, error)                               //perm:read
 	PiecesGetPieceInfo(ctx context.Context, pieceCid cid.Cid) (*piecestore.PieceInfo, error) //perm:read
diff --git a/api/api_worker.go b/api/api_worker.go
index 18c06ecb94c..77c22a51708 100644
--- a/api/api_worker.go
+++ b/api/api_worker.go
@@ -59,7 +59,10 @@ type Worker interface {
 	// Storage / Other
 	Remove(ctx context.Context, sector abi.SectorID) error //perm:admin
 
-	StorageAddLocal(ctx context.Context, path string) error //perm:admin
+	StorageLocal(ctx context.Context) (map[storiface.ID]string, error)                   //perm:admin
+	StorageAddLocal(ctx context.Context, path string) error                              //perm:admin
+	StorageDetachLocal(ctx context.Context, path string) error                           //perm:admin
+	StorageRedeclareLocal(ctx context.Context, id *storiface.ID, dropMissing bool) error //perm:admin
 
 	// SetEnabled marks the worker as enabled/disabled. Not that this setting
 	// may take a few seconds to propagate to task scheduler
diff --git a/api/docgen/docgen.go b/api/docgen/docgen.go
index e6e16986f5b..b2a96f8b71e 100644
--- a/api/docgen/docgen.go
+++ b/api/docgen/docgen.go
@@ -272,6 +272,8 @@ func init() {
 			Read:   [storiface.FileTypes]uint{2, 3, 0},
 		},
 	})
+	storifaceid := storiface.ID("1399aa04-2625-44b1-bad4-bd07b59b22c4")
+	addExample(&storifaceid)
 
 	// worker specific
 	addExample(storiface.AcquireMove)
diff --git a/api/proxy_gen.go b/api/proxy_gen.go
index 506e615f2d4..70974d40524 100644
--- a/api/proxy_gen.go
+++ b/api/proxy_gen.go
@@ -864,6 +864,10 @@ type StorageMinerStruct struct {
 
 		StorageDeclareSector func(p0 context.Context, p1 storiface.ID, p2 abi.SectorID, p3 storiface.SectorFileType, p4 bool) error `perm:"admin"`
 
+		StorageDetach func(p0 context.Context, p1 storiface.ID, p2 string) error `perm:"admin"`
+
+		StorageDetachLocal func(p0 context.Context, p1 string) error `perm:"admin"`
+
 		StorageDropSector func(p0 context.Context, p1 storiface.ID, p2 abi.SectorID, p3 storiface.SectorFileType) error `perm:"admin"`
 
 		StorageFindSector func(p0 context.Context, p1 abi.SectorID, p2 storiface.SectorFileType, p3 abi.SectorSize, p4 bool) ([]storiface.SectorStorageInfo, error) `perm:"admin"`
@@ -878,6 +882,8 @@ type StorageMinerStruct struct {
 
 		StorageLock func(p0 context.Context, p1 abi.SectorID, p2 storiface.SectorFileType, p3 storiface.SectorFileType) error `perm:"admin"`
 
+		StorageRedeclareLocal func(p0 context.Context, p1 *storiface.ID, p2 bool) error `perm:"admin"`
+
 		StorageReportHealth func(p0 context.Context, p1 storiface.ID, p2 storiface.HealthReport) error `perm:"admin"`
 
 		StorageStat func(p0 context.Context, p1 storiface.ID) (fsutil.FsStat, error) `perm:"admin"`
@@ -973,6 +979,12 @@ type WorkerStruct struct {
 
 		StorageAddLocal func(p0 context.Context, p1 string) error `perm:"admin"`
 
+		StorageDetachLocal func(p0 context.Context, p1 string) error `perm:"admin"`
+
+		StorageLocal func(p0 context.Context) (map[storiface.ID]string, error) `perm:"admin"`
+
+		StorageRedeclareLocal func(p0 context.Context, p1 *storiface.ID, p2 bool) error `perm:"admin"`
+
 		TaskDisable func(p0 context.Context, p1 sealtasks.TaskType) error `perm:"admin"`
 
 		TaskEnable func(p0 context.Context, p1 sealtasks.TaskType) error `perm:"admin"`
@@ -5104,6 +5116,28 @@ func (s *StorageMinerStub) StorageDeclareSector(p0 context.Context, p1 storiface
 	return ErrNotSupported
 }
 
+func (s *StorageMinerStruct) StorageDetach(p0 context.Context, p1 storiface.ID, p2 string) error {
+	if s.Internal.StorageDetach == nil {
+		return ErrNotSupported
+	}
+	return s.Internal.StorageDetach(p0, p1, p2)
+}
+
+func (s *StorageMinerStub) StorageDetach(p0 context.Context, p1 storiface.ID, p2 string) error {
+	return ErrNotSupported
+}
+
+func (s *StorageMinerStruct) StorageDetachLocal(p0 context.Context, p1 string) error {
+	if s.Internal.StorageDetachLocal == nil {
+		return ErrNotSupported
+	}
+	return s.Internal.StorageDetachLocal(p0, p1)
+}
+
+func (s *StorageMinerStub) StorageDetachLocal(p0 context.Context, p1 string) error {
+	return ErrNotSupported
+}
+
 func (s *StorageMinerStruct) StorageDropSector(p0 context.Context, p1 storiface.ID, p2 abi.SectorID, p3 storiface.SectorFileType) error {
 	if s.Internal.StorageDropSector == nil {
 		return ErrNotSupported
@@ -5181,6 +5215,17 @@ func (s *StorageMinerStub) StorageLock(p0 context.Context, p1 abi.SectorID, p2 s
 	return ErrNotSupported
 }
 
+func (s *StorageMinerStruct) StorageRedeclareLocal(p0 context.Context, p1 *storiface.ID, p2 bool) error {
+	if s.Internal.StorageRedeclareLocal == nil {
+		return ErrNotSupported
+	}
+	return s.Internal.StorageRedeclareLocal(p0, p1, p2)
+}
+
+func (s *StorageMinerStub) StorageRedeclareLocal(p0 context.Context, p1 *storiface.ID, p2 bool) error {
+	return ErrNotSupported
+}
+
 func (s *StorageMinerStruct) StorageReportHealth(p0 context.Context, p1 storiface.ID, p2 storiface.HealthReport) error {
 	if s.Internal.StorageReportHealth == nil {
 		return ErrNotSupported
@@ -5610,6 +5655,39 @@ func (s *WorkerStub) StorageAddLocal(p0 context.Context, p1 string) error {
 	return ErrNotSupported
 }
 
+func (s *WorkerStruct) StorageDetachLocal(p0 context.Context, p1 string) error {
+	if s.Internal.StorageDetachLocal == nil {
+		return ErrNotSupported
+	}
+	return s.Internal.StorageDetachLocal(p0, p1)
+}
+
+func (s *WorkerStub) StorageDetachLocal(p0 context.Context, p1 string) error {
+	return ErrNotSupported
+}
+
+func (s *WorkerStruct) StorageLocal(p0 context.Context) (map[storiface.ID]string, error) {
+	if s.Internal.StorageLocal == nil {
+		return *new(map[storiface.ID]string), ErrNotSupported
+	}
+	return s.Internal.StorageLocal(p0)
+}
+
+func (s *WorkerStub) StorageLocal(p0 context.Context) (map[storiface.ID]string, error) {
+	return *new(map[storiface.ID]string), ErrNotSupported
+}
+
+func (s *WorkerStruct) StorageRedeclareLocal(p0 context.Context, p1 *storiface.ID, p2 bool) error {
+	if s.Internal.StorageRedeclareLocal == nil {
+		return ErrNotSupported
+	}
+	return s.Internal.StorageRedeclareLocal(p0, p1, p2)
+}
+
+func (s *WorkerStub) StorageRedeclareLocal(p0 context.Context, p1 *storiface.ID, p2 bool) error {
+	return ErrNotSupported
+}
+
 func (s *WorkerStruct) TaskDisable(p0 context.Context, p1 sealtasks.TaskType) error {
 	if s.Internal.TaskDisable == nil {
 		return ErrNotSupported
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
index 5f798d94227..39128f2c20d 100644
Binary files a/build/openrpc/full.json.gz and b/build/openrpc/full.json.gz differ
diff --git a/build/openrpc/gateway.json.gz b/build/openrpc/gateway.json.gz
index 79d54ee3927..d1d18dde6c8 100644
Binary files a/build/openrpc/gateway.json.gz and b/build/openrpc/gateway.json.gz differ
diff --git a/build/openrpc/miner.json.gz b/build/openrpc/miner.json.gz
index 158286ef489..9d3021a7a51 100644
Binary files a/build/openrpc/miner.json.gz and b/build/openrpc/miner.json.gz differ
diff --git a/build/openrpc/worker.json.gz b/build/openrpc/worker.json.gz
index e1cf8100d6e..9d6af03202d 100644
Binary files a/build/openrpc/worker.json.gz and b/build/openrpc/worker.json.gz differ
diff --git a/cmd/lotus-miner/storage.go b/cmd/lotus-miner/storage.go
index 035af80c66d..cc5d9453423 100644
--- a/cmd/lotus-miner/storage.go
+++ b/cmd/lotus-miner/storage.go
@@ -46,6 +46,8 @@ long term for proving (references as 'store') as well as how sectors will be
 stored while moving through the sealing pipeline (references as 'seal').`,
 	Subcommands: []*cli.Command{
 		storageAttachCmd,
+		storageDetachCmd,
+		storageRedeclareCmd,
 		storageListCmd,
 		storageFindCmd,
 		storageCleanupCmd,
@@ -174,6 +176,82 @@ over time
 	},
 }
 
+var storageDetachCmd = &cli.Command{
+	Name:  "detach",
+	Usage: "detach local storage path",
+	Flags: []cli.Flag{
+		&cli.BoolFlag{
+			Name: "really-do-it",
+		},
+	},
+	ArgsUsage: "[path]",
+	Action: func(cctx *cli.Context) error {
+		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+		ctx := lcli.ReqContext(cctx)
+
+		if !cctx.Args().Present() {
+			return xerrors.Errorf("must specify storage path")
+		}
+
+		p, err := homedir.Expand(cctx.Args().First())
+		if err != nil {
+			return xerrors.Errorf("expanding path: %w", err)
+		}
+
+		if !cctx.Bool("really-do-it") {
+			return xerrors.Errorf("pass --really-do-it to execute the action")
+		}
+
+		return nodeApi.StorageDetachLocal(ctx, p)
+	},
+}
+
+var storageRedeclareCmd = &cli.Command{
+	Name:  "redeclare",
+	Usage: "redeclare sectors in a local storage path",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "id",
+			Usage: "storage path ID",
+		},
+		&cli.BoolFlag{
+			Name:  "all",
+			Usage: "redeclare all storage paths",
+		},
+		&cli.BoolFlag{
+			Name:  "drop-missing",
+			Usage: "Drop index entries with missing files",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		nodeApi, closer, err := lcli.GetStorageMinerAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+		ctx := lcli.ReqContext(cctx)
+
+		if cctx.IsSet("id") && cctx.Bool("all") {
+			return xerrors.Errorf("--id and --all can't be passed at the same time")
+		}
+
+		if cctx.IsSet("id") {
+			id := storiface.ID(cctx.String("id"))
+			return nodeApi.StorageRedeclareLocal(ctx, &id, cctx.Bool("drop-missing"))
+		}
+
+		if cctx.Bool("all") {
+			return nodeApi.StorageRedeclareLocal(ctx, nil, cctx.Bool("drop-missing"))
+		}
+
+		return xerrors.Errorf("either --all or --id must be specified")
+	},
+}
+
 var storageListCmd = &cli.Command{
 	Name:  "list",
 	Usage: "list local storage paths",
diff --git a/cmd/lotus-worker/main.go b/cmd/lotus-worker/main.go
index 5af63f70c7e..de8e63f1fbf 100644
--- a/cmd/lotus-worker/main.go
+++ b/cmd/lotus-worker/main.go
@@ -619,7 +619,7 @@ var runCmd = &cli.Command{
 				if redeclareStorage {
 					log.Info("Redeclaring local storage")
 
-					if err := localStore.Redeclare(ctx); err != nil {
+					if err := localStore.Redeclare(ctx, nil, false); err != nil {
 						log.Errorf("Redeclaring local storage failed: %+v", err)
 
 						select {
diff --git a/cmd/lotus-worker/sealworker/rpc.go b/cmd/lotus-worker/sealworker/rpc.go
index 605f8a532f4..fc435487452 100644
--- a/cmd/lotus-worker/sealworker/rpc.go
+++ b/cmd/lotus-worker/sealworker/rpc.go
@@ -65,6 +65,20 @@ func (w *Worker) Version(context.Context) (api.Version, error) {
 	return api.WorkerAPIVersion0, nil
 }
 
+func (w *Worker) StorageLocal(ctx context.Context) (map[storiface.ID]string, error) {
+	l, err := w.LocalStore.Local(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	out := map[storiface.ID]string{}
+	for _, st := range l {
+		out[st.ID] = st.LocalPath
+	}
+
+	return out, nil
+}
+
 func (w *Worker) StorageAddLocal(ctx context.Context, path string) error {
 	path, err := homedir.Expand(path)
 	if err != nil {
@@ -84,6 +98,58 @@ func (w *Worker) StorageAddLocal(ctx context.Context, path string) error {
 	return nil
 }
 
+func (w *Worker) StorageDetachLocal(ctx context.Context, path string) error {
+	path, err := homedir.Expand(path)
+	if err != nil {
+		return xerrors.Errorf("expanding local path: %w", err)
+	}
+
+	// check that we have the path opened
+	lps, err := w.LocalStore.Local(ctx)
+	if err != nil {
+		return xerrors.Errorf("getting local path list: %w", err)
+	}
+
+	var localPath *storiface.StoragePath
+	for _, lp := range lps {
+		if lp.LocalPath == path {
+			lp := lp // copy to make the linter happy
+			localPath = &lp
+			break
+		}
+	}
+	if localPath == nil {
+		return xerrors.Errorf("no local paths match '%s'", path)
+	}
+
+	// drop from the persisted storage.json
+	var found bool
+	if err := w.Storage.SetStorage(func(sc *paths.StorageConfig) {
+		out := make([]paths.LocalPath, 0, len(sc.StoragePaths))
+		for _, storagePath := range sc.StoragePaths {
+			if storagePath.Path != path {
+				out = append(out, storagePath)
+				continue
+			}
+			found = true
+		}
+		sc.StoragePaths = out
+	}); err != nil {
+		return xerrors.Errorf("set storage config: %w", err)
+	}
+	if !found {
+		// maybe this is fine?
+		return xerrors.Errorf("path not found in storage.json")
+	}
+
+	// unregister locally, drop from sector index
+	return w.LocalStore.ClosePath(ctx, localPath.ID)
+}
+
+func (w *Worker) StorageRedeclareLocal(ctx context.Context, id *storiface.ID, dropMissing bool) error {
+	return w.LocalStore.Redeclare(ctx, id, dropMissing)
+}
+
 func (w *Worker) SetEnabled(ctx context.Context, enabled bool) error {
 	disabled := int64(1)
 	if enabled {
@@ -123,3 +189,4 @@ func (w *Worker) Shutdown(ctx context.Context) error {
 }
 
 var _ storiface.WorkerCalls = &Worker{}
+var _ api.Worker = &Worker{}
diff --git a/cmd/lotus-worker/storage.go b/cmd/lotus-worker/storage.go
index 2f1cd2f711c..0736ffbfb88 100644
--- a/cmd/lotus-worker/storage.go
+++ b/cmd/lotus-worker/storage.go
@@ -24,6 +24,8 @@ var storageCmd = &cli.Command{
 	Usage: "manage sector storage",
 	Subcommands: []*cli.Command{
 		storageAttachCmd,
+		storageDetachCmd,
+		storageRedeclareCmd,
 	},
 }
 
@@ -128,3 +130,79 @@ var storageAttachCmd = &cli.Command{
 		return nodeApi.StorageAddLocal(ctx, p)
 	},
 }
+
+var storageDetachCmd = &cli.Command{
+	Name:  "detach",
+	Usage: "detach local storage path",
+	Flags: []cli.Flag{
+		&cli.BoolFlag{
+			Name: "really-do-it",
+		},
+	},
+	ArgsUsage: "[path]",
+	Action: func(cctx *cli.Context) error {
+		nodeApi, closer, err := lcli.GetWorkerAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+		ctx := lcli.ReqContext(cctx)
+
+		if !cctx.Args().Present() {
+			return xerrors.Errorf("must specify storage path")
+		}
+
+		p, err := homedir.Expand(cctx.Args().First())
+		if err != nil {
+			return xerrors.Errorf("expanding path: %w", err)
+		}
+
+		if !cctx.Bool("really-do-it") {
+			return xerrors.Errorf("pass --really-do-it to execute the action")
+		}
+
+		return nodeApi.StorageDetachLocal(ctx, p)
+	},
+}
+
+var storageRedeclareCmd = &cli.Command{
+	Name:  "redeclare",
+	Usage: "redeclare sectors in a local storage path",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "id",
+			Usage: "storage path ID",
+		},
+		&cli.BoolFlag{
+			Name:  "all",
+			Usage: "redeclare all storage paths",
+		},
+		&cli.BoolFlag{
+			Name:  "drop-missing",
+			Usage: "Drop index entries with missing files",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		nodeApi, closer, err := lcli.GetWorkerAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+		ctx := lcli.ReqContext(cctx)
+
+		if cctx.IsSet("id") && cctx.Bool("all") {
+			return xerrors.Errorf("--id and --all can't be passed at the same time")
+		}
+
+		if cctx.IsSet("id") {
+			id := storiface.ID(cctx.String("id"))
+			return nodeApi.StorageRedeclareLocal(ctx, &id, cctx.Bool("drop-missing"))
+		}
+
+		if cctx.Bool("all") {
+			return nodeApi.StorageRedeclareLocal(ctx, nil, cctx.Bool("drop-missing"))
+		}
+
+		return xerrors.Errorf("either --all or --id must be specified")
+	},
+}
diff --git a/documentation/en/api-v0-methods-miner.md b/documentation/en/api-v0-methods-miner.md
index 4507e03b873..7a1d4ad9b3a 100644
--- a/documentation/en/api-v0-methods-miner.md
+++ b/documentation/en/api-v0-methods-miner.md
@@ -162,6 +162,8 @@
   * [StorageAuthVerify](#StorageAuthVerify)
   * [StorageBestAlloc](#StorageBestAlloc)
   * [StorageDeclareSector](#StorageDeclareSector)
+  * [StorageDetach](#StorageDetach)
+  * [StorageDetachLocal](#StorageDetachLocal)
   * [StorageDropSector](#StorageDropSector)
   * [StorageFindSector](#StorageFindSector)
   * [StorageGetLocks](#StorageGetLocks)
@@ -169,6 +171,7 @@
   * [StorageList](#StorageList)
   * [StorageLocal](#StorageLocal)
   * [StorageLock](#StorageLock)
+  * [StorageRedeclareLocal](#StorageRedeclareLocal)
   * [StorageReportHealth](#StorageReportHealth)
   * [StorageStat](#StorageStat)
   * [StorageTryLock](#StorageTryLock)
@@ -3437,6 +3440,35 @@ Inputs:
 
 Response: `{}`
 
+### StorageDetach
+
+
+Perms: admin
+
+Inputs:
+```json
+[
+  "76f1988b-ef30-4d7e-b3ec-9a627f4ba5a8",
+  "string value"
+]
+```
+
+Response: `{}`
+
+### StorageDetachLocal
+
+
+Perms: admin
+
+Inputs:
+```json
+[
+  "string value"
+]
+```
+
+Response: `{}`
+
 ### StorageDropSector
 
 
@@ -3633,6 +3665,21 @@ Inputs:
 
 Response: `{}`
 
+### StorageRedeclareLocal
+
+
+Perms: admin
+
+Inputs:
+```json
+[
+  "1399aa04-2625-44b1-bad4-bd07b59b22c4",
+  true
+]
+```
+
+Response: `{}`
+
 ### StorageReportHealth
 
 
diff --git a/documentation/en/api-v0-methods-worker.md b/documentation/en/api-v0-methods-worker.md
index 07f182a95c3..ca98bc4bbe4 100644
--- a/documentation/en/api-v0-methods-worker.md
+++ b/documentation/en/api-v0-methods-worker.md
@@ -39,6 +39,9 @@
   * [SetEnabled](#SetEnabled)
 * [Storage](#Storage)
   * [StorageAddLocal](#StorageAddLocal)
+  * [StorageDetachLocal](#StorageDetachLocal)
+  * [StorageLocal](#StorageLocal)
+  * [StorageRedeclareLocal](#StorageRedeclareLocal)
 * [Task](#Task)
   * [TaskDisable](#TaskDisable)
   * [TaskEnable](#TaskEnable)
@@ -2118,6 +2121,49 @@ Inputs:
 
 Response: `{}`
 
+### StorageDetachLocal
+
+
+Perms: admin
+
+Inputs:
+```json
+[
+  "string value"
+]
+```
+
+Response: `{}`
+
+### StorageLocal
+
+
+Perms: admin
+
+Inputs: `null`
+
+Response:
+```json
+{
+  "76f1988b-ef30-4d7e-b3ec-9a627f4ba5a8": "/data/path"
+}
+```
+
+### StorageRedeclareLocal
+
+
+Perms: admin
+
+Inputs:
+```json
+[
+  "1399aa04-2625-44b1-bad4-bd07b59b22c4",
+  true
+]
+```
+
+Response: `{}`
+
 ## Task
 
 
diff --git a/documentation/en/cli-lotus-miner.md b/documentation/en/cli-lotus-miner.md
index cd78e9a02a4..0cdf817494c 100644
--- a/documentation/en/cli-lotus-miner.md
+++ b/documentation/en/cli-lotus-miner.md
@@ -2151,12 +2151,14 @@ DESCRIPTION:
    stored while moving through the sealing pipeline (references as 'seal').
 
 COMMANDS:
-   attach   attach local storage path
-   list     list local storage paths
-   find     find sector in the storage system
-   cleanup  trigger cleanup actions
-   locks    show active sector locks
-   help, h  Shows a list of commands or help for one command
+   attach     attach local storage path
+   detach     detach local storage path
+   redeclare  redeclare sectors in a local storage path
+   list       list local storage paths
+   find       find sector in the storage system
+   cleanup    trigger cleanup actions
+   locks      show active sector locks
+   help, h    Shows a list of commands or help for one command
 
 OPTIONS:
    --help, -h  show help (default: false)
@@ -2202,6 +2204,34 @@ OPTIONS:
    
 ```
 
+### lotus-miner storage detach
+```
+NAME:
+   lotus-miner storage detach - detach local storage path
+
+USAGE:
+   lotus-miner storage detach [command options] [path]
+
+OPTIONS:
+   --really-do-it  (default: false)
+   
+```
+
+### lotus-miner storage redeclare
+```
+NAME:
+   lotus-miner storage redeclare - redeclare sectors in a local storage path
+
+USAGE:
+   lotus-miner storage redeclare [command options] [arguments...]
+
+OPTIONS:
+   --all           redeclare all storage paths (default: false)
+   --drop-missing  Drop index entries with missing files (default: false)
+   --id value      storage path ID
+   
+```
+
 ### lotus-miner storage list
 ```
 NAME:
diff --git a/documentation/en/cli-lotus-worker.md b/documentation/en/cli-lotus-worker.md
index ee5c5c1ded1..68d4b15672b 100644
--- a/documentation/en/cli-lotus-worker.md
+++ b/documentation/en/cli-lotus-worker.md
@@ -95,8 +95,10 @@ USAGE:
    lotus-worker storage command [command options] [arguments...]
 
 COMMANDS:
-   attach   attach local storage path
-   help, h  Shows a list of commands or help for one command
+   attach     attach local storage path
+   detach     detach local storage path
+   redeclare  redeclare sectors in a local storage path
+   help, h    Shows a list of commands or help for one command
 
 OPTIONS:
    --help, -h  show help (default: false)
@@ -122,6 +124,34 @@ OPTIONS:
    
 ```
 
+### lotus-worker storage detach
+```
+NAME:
+   lotus-worker storage detach - detach local storage path
+
+USAGE:
+   lotus-worker storage detach [command options] [path]
+
+OPTIONS:
+   --really-do-it  (default: false)
+   
+```
+
+### lotus-worker storage redeclare
+```
+NAME:
+   lotus-worker storage redeclare - redeclare sectors in a local storage path
+
+USAGE:
+   lotus-worker storage redeclare [command options] [arguments...]
+
+OPTIONS:
+   --all           redeclare all storage paths (default: false)
+   --drop-missing  Drop index entries with missing files (default: false)
+   --id value      storage path ID
+   
+```
+
 ## lotus-worker set
 ```
 NAME:
diff --git a/itests/batch_deal_test.go b/itests/batch_deal_test.go
index 64326c82264..329a6b3bb03 100644
--- a/itests/batch_deal_test.go
+++ b/itests/batch_deal_test.go
@@ -74,7 +74,7 @@ func TestBatchDealInput(t *testing.T) {
 			require.NoError(t, err)
 
 			checkNoPadding := func() {
-				sl, err := miner.SectorsList(ctx)
+				sl, err := miner.SectorsListNonGenesis(ctx)
 				require.NoError(t, err)
 
 				sort.Slice(sl, func(i, j int) bool {
@@ -125,7 +125,7 @@ func TestBatchDealInput(t *testing.T) {
 
 			checkNoPadding()
 
-			sl, err := miner.SectorsList(ctx)
+			sl, err := miner.SectorsListNonGenesis(ctx)
 			require.NoError(t, err)
 			require.Equal(t, len(sl), expectSectors)
 		}
diff --git a/itests/ccupgrade_test.go b/itests/ccupgrade_test.go
index 880c4f30989..aae99c6baf1 100644
--- a/itests/ccupgrade_test.go
+++ b/itests/ccupgrade_test.go
@@ -60,11 +60,11 @@ func runTestCCUpgrade(t *testing.T) *kit.TestFullNode {
 		t.Fatal(err)
 	}
 
-	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner + 1)
+	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner)
 	fmt.Printf("CCUpgrade: %d\n", CCUpgrade)
 
 	miner.PledgeSectors(ctx, 1, 0, nil)
-	sl, err := miner.SectorsList(ctx)
+	sl, err := miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 	require.Equal(t, CCUpgrade, sl[0], "unexpected sector number")
@@ -79,7 +79,7 @@ func runTestCCUpgrade(t *testing.T) *kit.TestFullNode {
 	err = miner.SectorMarkForUpgrade(ctx, sl[0], true)
 	require.NoError(t, err)
 
-	sl, err = miner.SectorsList(ctx)
+	sl, err = miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 
diff --git a/itests/deadlines_test.go b/itests/deadlines_test.go
index edcabba2152..e76d4dafd53 100644
--- a/itests/deadlines_test.go
+++ b/itests/deadlines_test.go
@@ -308,7 +308,7 @@ func TestDeadlineToggling(t *testing.T) {
 	// terminate sectors on minerD
 	{
 		var terminationDeclarationParams []miner2.TerminationDeclaration
-		secs, err := minerD.SectorsList(ctx)
+		secs, err := minerD.SectorsListNonGenesis(ctx)
 		require.NoError(t, err)
 		require.Len(t, secs, sectorsD)
 
diff --git a/itests/deals_pricing_test.go b/itests/deals_pricing_test.go
index e01f74e0c63..15482f62b6f 100644
--- a/itests/deals_pricing_test.go
+++ b/itests/deals_pricing_test.go
@@ -70,7 +70,7 @@ func TestQuotePriceForUnsealedRetrieval(t *testing.T) {
 	//stm: @STORAGE_LIST_001, @MINER_SECTOR_LIST_001
 	ss, err := miner.StorageList(context.Background())
 	require.NoError(t, err)
-	_, err = miner.SectorsList(ctx)
+	_, err = miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 
 	//stm: @STORAGE_DROP_SECTOR_001, @STORAGE_LIST_001
@@ -95,7 +95,7 @@ iLoop:
 	// remove the other unsealed file as well
 	ss, err = miner.StorageList(context.Background())
 	require.NoError(t, err)
-	_, err = miner.SectorsList(ctx)
+	_, err = miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	for storeID, sd := range ss {
 		for _, sector := range sd {
diff --git a/itests/kit/deals.go b/itests/kit/deals.go
index 55ca4e1b760..794a6380328 100644
--- a/itests/kit/deals.go
+++ b/itests/kit/deals.go
@@ -292,7 +292,7 @@ func (dh *DealHarness) WaitDealPublished(ctx context.Context, deal *cid.Cid) {
 }
 
 func (dh *DealHarness) StartSealingWaiting(ctx context.Context) {
-	snums, err := dh.main.SectorsList(ctx)
+	snums, err := dh.main.SectorsListNonGenesis(ctx)
 	require.NoError(dh.t, err)
 	for _, snum := range snums {
 		si, err := dh.main.SectorsStatus(ctx, snum, false)
diff --git a/itests/kit/ensemble.go b/itests/kit/ensemble.go
index 434917c54b1..50e72fdd57b 100644
--- a/itests/kit/ensemble.go
+++ b/itests/kit/ensemble.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"crypto/rand"
+	"encoding/binary"
 	"fmt"
 	"io/ioutil"
 	"net"
@@ -20,13 +21,13 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"github.com/filecoin-project/go-address"
+	cborutil "github.com/filecoin-project/go-cbor-util"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/go-state-types/builtin"
 	"github.com/filecoin-project/go-state-types/exitcode"
 	"github.com/filecoin-project/go-state-types/network"
 	"github.com/filecoin-project/go-statestore"
-	"github.com/filecoin-project/go-storedcounter"
 	miner2 "github.com/filecoin-project/specs-actors/v2/actors/builtin/miner"
 	power3 "github.com/filecoin-project/specs-actors/v3/actors/builtin/power"
 
@@ -56,6 +57,7 @@ import (
 	testing2 "github.com/filecoin-project/lotus/node/modules/testing"
 	"github.com/filecoin-project/lotus/node/repo"
 	"github.com/filecoin-project/lotus/storage/paths"
+	pipeline "github.com/filecoin-project/lotus/storage/pipeline"
 	sectorstorage "github.com/filecoin-project/lotus/storage/sealer"
 	"github.com/filecoin-project/lotus/storage/sealer/mock"
 	"github.com/filecoin-project/lotus/storage/sealer/storiface"
@@ -233,11 +235,14 @@ func (n *Ensemble) Miner(minerNode *TestMiner, full *TestFullNode, opts ...NodeO
 	}
 
 	ownerKey := options.ownerKey
+	var presealSectors int
+
 	if !n.bootstrapped {
+		presealSectors = options.sectors
+
 		var (
-			sectors = options.sectors
-			k       *types.KeyInfo
-			genm    *genesis.Miner
+			k    *types.KeyInfo
+			genm *genesis.Miner
 		)
 
 		// Will use 2KiB sectors by default (default value of sectorSize).
@@ -246,9 +251,9 @@ func (n *Ensemble) Miner(minerNode *TestMiner, full *TestFullNode, opts ...NodeO
 
 		// Create the preseal commitment.
 		if n.options.mockProofs {
-			genm, k, err = mock.PreSeal(proofType, actorAddr, sectors)
+			genm, k, err = mock.PreSeal(proofType, actorAddr, presealSectors)
 		} else {
-			genm, k, err = seed.PreSeal(actorAddr, proofType, 0, sectors, tdir, []byte("make genesis mem random"), nil, true)
+			genm, k, err = seed.PreSeal(actorAddr, proofType, 0, presealSectors, tdir, []byte("make genesis mem random"), nil, true)
 		}
 		require.NoError(n.t, err)
 
@@ -279,6 +284,7 @@ func (n *Ensemble) Miner(minerNode *TestMiner, full *TestFullNode, opts ...NodeO
 		OwnerKey:       ownerKey,
 		FullNode:       full,
 		PresealDir:     tdir,
+		PresealSectors: presealSectors,
 		options:        options,
 		RemoteListener: rl,
 	}
@@ -535,13 +541,10 @@ func (n *Ensemble) Start() *Ensemble {
 		err = ds.Put(ctx, datastore.NewKey("miner-address"), m.ActorAddr.Bytes())
 		require.NoError(n.t, err)
 
-		nic := storedcounter.New(ds, datastore.NewKey(modules.StorageCounterDSPrefix))
-		for i := 0; i < m.options.sectors; i++ {
-			_, err := nic.Next()
-			require.NoError(n.t, err)
+		if i < len(n.genesis.miners) && !n.bootstrapped {
+			// if this is a genesis miner, import preseal metadata
+			require.NoError(n.t, importPreSealMeta(ctx, n.genesis.miners[i], ds))
 		}
-		_, err = nic.Next()
-		require.NoError(n.t, err)
 
 		// using real proofs, therefore need real sectors.
 		if !n.bootstrapped && !n.options.mockProofs {
@@ -913,3 +916,46 @@ func (n *Ensemble) generateGenesis() *genesis.Template {
 
 	return templ
 }
+
+func importPreSealMeta(ctx context.Context, meta genesis.Miner, mds dtypes.MetadataDS) error {
+	maxSectorID := abi.SectorNumber(0)
+	for _, sector := range meta.Sectors {
+		sectorKey := datastore.NewKey(pipeline.SectorStorePrefix).ChildString(fmt.Sprint(sector.SectorID))
+
+		commD := sector.CommD
+		commR := sector.CommR
+
+		info := &pipeline.SectorInfo{
+			State:        pipeline.Proving,
+			SectorNumber: sector.SectorID,
+			Pieces: []pipeline.Piece{
+				{
+					Piece: abi.PieceInfo{
+						Size:     abi.PaddedPieceSize(meta.SectorSize),
+						PieceCID: commD,
+					},
+					DealInfo: nil, // todo: likely possible to get, but not really that useful
+				},
+			},
+			CommD: &commD,
+			CommR: &commR,
+		}
+
+		b, err := cborutil.Dump(info)
+		if err != nil {
+			return err
+		}
+
+		if err := mds.Put(ctx, sectorKey, b); err != nil {
+			return err
+		}
+
+		if sector.SectorID > maxSectorID {
+			maxSectorID = sector.SectorID
+		}
+	}
+
+	buf := make([]byte, binary.MaxVarintLen64)
+	size := binary.PutUvarint(buf, uint64(maxSectorID))
+	return mds.Put(ctx, datastore.NewKey(modules.StorageCounterDSPrefix), buf[:size])
+}
diff --git a/itests/kit/node_miner.go b/itests/kit/node_miner.go
index 65c7abe3828..c48a09c17ed 100644
--- a/itests/kit/node_miner.go
+++ b/itests/kit/node_miner.go
@@ -8,6 +8,7 @@ import (
 	"net"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 	"testing"
 	"time"
@@ -76,8 +77,9 @@ type TestMiner struct {
 	MineOne   func(context.Context, miner.MineReq) error
 	Stop      func(context.Context) error
 
-	FullNode   *TestFullNode
-	PresealDir string
+	FullNode       *TestFullNode
+	PresealDir     string
+	PresealSectors int
 
 	Libp2p struct {
 		PeerID  peer.ID
@@ -128,9 +130,9 @@ func (tm *TestMiner) StartPledge(ctx context.Context, n, existing int, blockNoti
 	}
 
 	for {
-		s, err := tm.StorageMiner.SectorsList(ctx) // Note - the test builder doesn't import genesis sectors into FSM
+		s, err := tm.SectorsListNonGenesis(ctx)
 		require.NoError(tm.t, err)
-		fmt.Printf("Sectors: %d\n", len(s))
+		fmt.Printf("Sectors: %d (n %d, ex %d)\n", len(s), n, existing)
 		if len(s) >= n+existing {
 			break
 		}
@@ -140,7 +142,7 @@ func (tm *TestMiner) StartPledge(ctx context.Context, n, existing int, blockNoti
 
 	fmt.Printf("All sectors is fsm\n")
 
-	s, err := tm.StorageMiner.SectorsList(ctx)
+	s, err := tm.SectorsListNonGenesis(ctx)
 	require.NoError(tm.t, err)
 
 	toCheck := map[abi.SectorNumber]struct{}{}
@@ -205,3 +207,15 @@ func (tm *TestMiner) AddStorage(ctx context.Context, t *testing.T, conf func(*pa
 
 	return cfg.ID
 }
+func (tm *TestMiner) SectorsListNonGenesis(ctx context.Context) ([]abi.SectorNumber, error) {
+	l, err := tm.SectorsList(ctx)
+	if err != nil {
+		return nil, err
+	}
+	// sort just in case
+	sort.Slice(l, func(i, j int) bool {
+		return l[i] < l[j]
+	})
+
+	return l[tm.PresealSectors:], nil
+}
diff --git a/itests/kit/node_worker.go b/itests/kit/node_worker.go
index 538c739a7ff..3a6a55c5515 100644
--- a/itests/kit/node_worker.go
+++ b/itests/kit/node_worker.go
@@ -2,13 +2,21 @@ package kit
 
 import (
 	"context"
+	"encoding/json"
+	"io/ioutil"
 	"net"
 	"net/http"
+	"os"
+	"path/filepath"
 	"testing"
 
+	"github.com/google/uuid"
 	"github.com/multiformats/go-multiaddr"
+	"github.com/stretchr/testify/require"
 
 	"github.com/filecoin-project/lotus/api"
+	"github.com/filecoin-project/lotus/storage/paths"
+	"github.com/filecoin-project/lotus/storage/sealer/storiface"
 )
 
 // TestWorker represents a worker enrolled in an Ensemble.
@@ -29,3 +37,42 @@ type TestWorker struct {
 
 	options nodeOpts
 }
+
+func (tm *TestWorker) AddStorage(ctx context.Context, t *testing.T, conf func(*paths.LocalStorageMeta)) storiface.ID {
+	p := t.TempDir()
+
+	if err := os.MkdirAll(p, 0755); err != nil {
+		if !os.IsExist(err) {
+			require.NoError(t, err)
+		}
+	}
+
+	_, err := os.Stat(filepath.Join(p, metaFile))
+	if !os.IsNotExist(err) {
+		require.NoError(t, err)
+	}
+
+	cfg := &paths.LocalStorageMeta{
+		ID:       storiface.ID(uuid.New().String()),
+		Weight:   10,
+		CanSeal:  false,
+		CanStore: false,
+	}
+
+	conf(cfg)
+
+	if !(cfg.CanStore || cfg.CanSeal) {
+		t.Fatal("must specify at least one of CanStore or cfg.CanSeal")
+	}
+
+	b, err := json.MarshalIndent(cfg, "", "  ")
+	require.NoError(t, err)
+
+	err = ioutil.WriteFile(filepath.Join(p, metaFile), b, 0644)
+	require.NoError(t, err)
+
+	err = tm.StorageAddLocal(ctx, p)
+	require.NoError(t, err)
+
+	return cfg.ID
+}
diff --git a/itests/path_detach_redeclare_test.go b/itests/path_detach_redeclare_test.go
new file mode 100644
index 00000000000..124266b7d94
--- /dev/null
+++ b/itests/path_detach_redeclare_test.go
@@ -0,0 +1,413 @@
+package itests
+
+import (
+	"context"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	logging "github.com/ipfs/go-log/v2"
+	"github.com/stretchr/testify/require"
+
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-state-types/abi"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/itests/kit"
+	"github.com/filecoin-project/lotus/storage/paths"
+	"github.com/filecoin-project/lotus/storage/sealer/sealtasks"
+	"github.com/filecoin-project/lotus/storage/sealer/storiface"
+)
+
+func TestPathDetachRedeclare(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	_ = logging.SetLogLevel("storageminer", "INFO")
+
+	var (
+		client   kit.TestFullNode
+		miner    kit.TestMiner
+		wiw, wdw kit.TestWorker
+	)
+	ens := kit.NewEnsemble(t, kit.LatestActorsAt(-1)).
+		FullNode(&client, kit.ThroughRPC()).
+		Miner(&miner, &client, kit.WithAllSubsystems(), kit.ThroughRPC(), kit.PresealSectors(2), kit.NoStorage()).
+		Worker(&miner, &wiw, kit.ThroughRPC(), kit.NoStorage(), kit.WithTaskTypes([]sealtasks.TaskType{sealtasks.TTGenerateWinningPoSt})).
+		Worker(&miner, &wdw, kit.ThroughRPC(), kit.NoStorage(), kit.WithTaskTypes([]sealtasks.TaskType{sealtasks.TTGenerateWindowPoSt})).
+		Start()
+
+	ens.InterconnectAll()
+
+	// check there's only one path
+	sps, err := miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+
+	var id storiface.ID
+	for s := range sps {
+		id = s
+	}
+
+	local, err := miner.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 1)
+	require.Greater(t, len(local[id]), 1)
+
+	oldLocal := local[id]
+
+	// check sectors
+	checkSectors(ctx, t, client, miner, 2, 0)
+
+	// detach preseal path
+	require.NoError(t, miner.StorageDetachLocal(ctx, local[id]))
+
+	// check that there are no paths, post checks fail
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 0)
+	local, err = miner.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 0)
+
+	checkSectors(ctx, t, client, miner, 2, 2)
+
+	// attach a new path
+	newId := miner.AddStorage(ctx, t, func(cfg *paths.LocalStorageMeta) {
+		cfg.CanStore = true
+	})
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	local, err = miner.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 1)
+	require.Greater(t, len(local[newId]), 1)
+
+	newLocal := local[newId]
+
+	// move sector data to the new path
+
+	// note: dest path already exist so we only want to .Join src
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(oldLocal, "sealed"), newLocal).Run())
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(oldLocal, "cache"), newLocal).Run())
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(oldLocal, "unsealed"), newLocal).Run())
+
+	// check that sector files aren't indexed, post checks fail
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 0)
+
+	// redeclare sectors
+	require.NoError(t, miner.StorageRedeclareLocal(ctx, nil, false))
+
+	// check that sector files exist, post checks work
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 2)
+
+	checkSectors(ctx, t, client, miner, 2, 0)
+
+	// remove one sector, one post check fails
+	require.NoError(t, os.RemoveAll(filepath.Join(newLocal, "sealed", "s-t01000-0")))
+	require.NoError(t, os.RemoveAll(filepath.Join(newLocal, "cache", "s-t01000-0")))
+	checkSectors(ctx, t, client, miner, 2, 1)
+
+	// redeclare with no drop, still see sector in the index
+	require.NoError(t, miner.StorageRedeclareLocal(ctx, nil, false))
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 2)
+
+	// redeclare with drop, don't see the sector in the index
+	require.NoError(t, miner.StorageRedeclareLocal(ctx, nil, true))
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 1)
+	require.Equal(t, abi.SectorNumber(1), sps[newId][0].SectorID.Number)
+}
+
+func TestPathDetachRedeclareWorker(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	_ = logging.SetLogLevel("storageminer", "INFO")
+
+	var (
+		client          kit.TestFullNode
+		miner           kit.TestMiner
+		wiw, wdw, sealw kit.TestWorker
+	)
+	ens := kit.NewEnsemble(t, kit.LatestActorsAt(-1)).
+		FullNode(&client, kit.ThroughRPC()).
+		Miner(&miner, &client, kit.WithAllSubsystems(), kit.ThroughRPC(), kit.PresealSectors(2), kit.NoStorage()).
+		Worker(&miner, &wiw, kit.ThroughRPC(), kit.NoStorage(), kit.WithTaskTypes([]sealtasks.TaskType{sealtasks.TTGenerateWinningPoSt})).
+		Worker(&miner, &wdw, kit.ThroughRPC(), kit.NoStorage(), kit.WithTaskTypes([]sealtasks.TaskType{sealtasks.TTGenerateWindowPoSt})).
+		Worker(&miner, &sealw, kit.ThroughRPC(), kit.NoStorage(), kit.WithSealWorkerTasks).
+		Start()
+
+	ens.InterconnectAll()
+
+	// check there's only one path on the miner, none on the worker
+	sps, err := miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+
+	var id storiface.ID
+	for s := range sps {
+		id = s
+	}
+
+	local, err := miner.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 1)
+	require.Greater(t, len(local[id]), 1)
+
+	oldLocal := local[id]
+
+	local, err = sealw.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 0)
+
+	// check sectors
+	checkSectors(ctx, t, client, miner, 2, 0)
+
+	// detach preseal path from the miner
+	require.NoError(t, miner.StorageDetachLocal(ctx, oldLocal))
+
+	// check that there are no paths, post checks fail
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 0)
+	local, err = miner.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 0)
+
+	checkSectors(ctx, t, client, miner, 2, 2)
+
+	// attach a new path
+	newId := sealw.AddStorage(ctx, t, func(cfg *paths.LocalStorageMeta) {
+		cfg.CanStore = true
+	})
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	local, err = sealw.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 1)
+	require.Greater(t, len(local[newId]), 1)
+
+	newLocalTemp := local[newId]
+
+	// move sector data to the new path
+
+	// note: dest path already exist so we only want to .Join src
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(oldLocal, "sealed"), newLocalTemp).Run())
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(oldLocal, "cache"), newLocalTemp).Run())
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(oldLocal, "unsealed"), newLocalTemp).Run())
+
+	// check that sector files aren't indexed, post checks fail
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 0)
+
+	// redeclare sectors
+	require.NoError(t, sealw.StorageRedeclareLocal(ctx, nil, false))
+
+	// check that sector files exist, post checks work
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 2)
+
+	checkSectors(ctx, t, client, miner, 2, 0)
+
+	// drop the path from the worker
+	require.NoError(t, sealw.StorageDetachLocal(ctx, newLocalTemp))
+	local, err = sealw.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 0)
+
+	// add a new one again, and move the sectors there
+	newId = sealw.AddStorage(ctx, t, func(cfg *paths.LocalStorageMeta) {
+		cfg.CanStore = true
+	})
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	local, err = sealw.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 1)
+	require.Greater(t, len(local[newId]), 1)
+
+	newLocal := local[newId]
+
+	// move sector data to the new path
+
+	// note: dest path already exist so we only want to .Join src
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(newLocalTemp, "sealed"), newLocal).Run())
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(newLocalTemp, "cache"), newLocal).Run())
+	require.NoError(t, exec.Command("cp", "--recursive", filepath.Join(newLocalTemp, "unsealed"), newLocal).Run())
+
+	// redeclare sectors
+	require.NoError(t, sealw.StorageRedeclareLocal(ctx, nil, false))
+
+	// check that sector files exist, post checks work
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 2)
+
+	checkSectors(ctx, t, client, miner, 2, 0)
+
+	// remove one sector, one check fails
+	require.NoError(t, os.RemoveAll(filepath.Join(newLocal, "sealed", "s-t01000-0")))
+	require.NoError(t, os.RemoveAll(filepath.Join(newLocal, "cache", "s-t01000-0")))
+	checkSectors(ctx, t, client, miner, 2, 1)
+
+	// redeclare with no drop, still see sector in the index
+	require.NoError(t, sealw.StorageRedeclareLocal(ctx, nil, false))
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 2)
+
+	// redeclare with drop, don't see the sector in the index
+	require.NoError(t, sealw.StorageRedeclareLocal(ctx, nil, true))
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+	require.Len(t, sps[newId], 1)
+	require.Equal(t, abi.SectorNumber(1), sps[newId][0].SectorID.Number)
+}
+
+func TestPathDetachShared(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	_ = logging.SetLogLevel("storageminer", "INFO")
+
+	var (
+		client          kit.TestFullNode
+		miner           kit.TestMiner
+		wiw, wdw, sealw kit.TestWorker
+	)
+	ens := kit.NewEnsemble(t, kit.LatestActorsAt(-1)).
+		FullNode(&client, kit.ThroughRPC()).
+		Miner(&miner, &client, kit.WithAllSubsystems(), kit.ThroughRPC(), kit.PresealSectors(2), kit.NoStorage()).
+		Worker(&miner, &wiw, kit.ThroughRPC(), kit.NoStorage(), kit.WithTaskTypes([]sealtasks.TaskType{sealtasks.TTGenerateWinningPoSt})).
+		Worker(&miner, &wdw, kit.ThroughRPC(), kit.NoStorage(), kit.WithTaskTypes([]sealtasks.TaskType{sealtasks.TTGenerateWindowPoSt})).
+		Worker(&miner, &sealw, kit.ThroughRPC(), kit.NoStorage(), kit.WithSealWorkerTasks).
+		Start()
+
+	ens.InterconnectAll()
+
+	// check there's only one path on the miner, none on the worker
+	sps, err := miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+
+	var id storiface.ID
+	for s := range sps {
+		id = s
+	}
+
+	// check that there's only one URL for the path (provided by the miner node)
+	si, err := miner.StorageInfo(ctx, id)
+	require.NoError(t, err)
+	require.Len(t, si.URLs, 1)
+
+	local, err := miner.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 1)
+	require.Greater(t, len(local[id]), 1)
+
+	minerLocal := local[id]
+
+	local, err = sealw.StorageLocal(ctx)
+	require.NoError(t, err)
+	require.Len(t, local, 0)
+
+	// share the genesis sector path with the worker
+	require.NoError(t, sealw.StorageAddLocal(ctx, minerLocal))
+
+	// still just one path, but accessible from two places
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+
+	// should see 2 urls now
+	si, err = miner.StorageInfo(ctx, id)
+	require.NoError(t, err)
+	require.Len(t, si.URLs, 2)
+
+	// drop the path from the worker
+	require.NoError(t, sealw.StorageDetachLocal(ctx, minerLocal))
+
+	// the path is still registered
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 1)
+
+	// but with just one URL (the miner)
+	si, err = miner.StorageInfo(ctx, id)
+	require.NoError(t, err)
+	require.Len(t, si.URLs, 1)
+
+	// now also drop from the minel and check that the path is gone
+	require.NoError(t, miner.StorageDetachLocal(ctx, minerLocal))
+
+	sps, err = miner.StorageList(ctx)
+	require.NoError(t, err)
+	require.Len(t, sps, 0)
+}
+
+func checkSectors(ctx context.Context, t *testing.T, api kit.TestFullNode, miner kit.TestMiner, expectChecked, expectBad int) {
+	addr, err := miner.ActorAddress(ctx)
+	require.NoError(t, err)
+
+	mid, err := address.IDFromAddress(addr)
+	require.NoError(t, err)
+
+	info, err := api.StateMinerInfo(ctx, addr, types.EmptyTSK)
+	require.NoError(t, err)
+
+	partitions, err := api.StateMinerPartitions(ctx, addr, 0, types.EmptyTSK)
+	require.NoError(t, err)
+	par := partitions[0]
+
+	sectorInfos, err := api.StateMinerSectors(ctx, addr, &par.LiveSectors, types.EmptyTSK)
+	require.NoError(t, err)
+
+	var tocheck []storiface.SectorRef
+	for _, info := range sectorInfos {
+		si := abi.SectorID{
+			Miner:  abi.ActorID(mid),
+			Number: info.SectorNumber,
+		}
+
+		tocheck = append(tocheck, storiface.SectorRef{
+			ProofType: info.SealProof,
+			ID:        si,
+		})
+	}
+
+	require.Len(t, tocheck, expectChecked)
+
+	bad, err := miner.CheckProvable(ctx, info.WindowPoStProofType, tocheck, true)
+	require.NoError(t, err)
+	require.Len(t, bad, expectBad)
+}
diff --git a/itests/sdr_upgrade_test.go b/itests/sdr_upgrade_test.go
index a90d0bebed9..493dc12241c 100644
--- a/itests/sdr_upgrade_test.go
+++ b/itests/sdr_upgrade_test.go
@@ -95,7 +95,7 @@ func TestSDRUpgrade(t *testing.T) {
 	// before.
 	miner.PledgeSectors(ctx, 9, 0, pledge)
 
-	s, err := miner.SectorsList(ctx)
+	s, err := miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	sort.Slice(s, func(i, j int) bool {
 		return s[i] < s[j]
diff --git a/itests/sector_make_cc_avail_test.go b/itests/sector_make_cc_avail_test.go
index 437e803b053..c6ed4b36d71 100644
--- a/itests/sector_make_cc_avail_test.go
+++ b/itests/sector_make_cc_avail_test.go
@@ -34,10 +34,10 @@ func TestMakeAvailable(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner + 1)
+	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner)
 
 	miner.PledgeSectors(ctx, 1, 0, nil)
-	sl, err := miner.SectorsList(ctx)
+	sl, err := miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 	require.Equal(t, CCUpgrade, sl[0], "unexpected sector number")
@@ -48,7 +48,7 @@ func TestMakeAvailable(t *testing.T) {
 	}
 	client.WaitForSectorActive(ctx, t, CCUpgrade, maddr)
 
-	sl, err = miner.SectorsList(ctx)
+	sl, err = miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 
@@ -64,7 +64,7 @@ func TestMakeAvailable(t *testing.T) {
 	outPath := dh.PerformRetrieval(context.Background(), deal, res.Root, false)
 	kit.AssertFilesEqual(t, inPath, outPath)
 
-	sl, err = miner.SectorsList(ctx)
+	sl, err = miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 
diff --git a/itests/sector_miner_collateral_test.go b/itests/sector_miner_collateral_test.go
index 07dad8edd74..b722dae6538 100644
--- a/itests/sector_miner_collateral_test.go
+++ b/itests/sector_miner_collateral_test.go
@@ -96,7 +96,7 @@ func TestMinerBalanceCollateral(t *testing.T) {
 		}
 
 		// check that sector messages had zero value set
-		sl, err := miner.SectorsList(ctx)
+		sl, err := miner.SectorsListNonGenesis(ctx)
 		require.NoError(t, err)
 
 		for _, number := range sl {
diff --git a/itests/sector_prefer_no_upgrade_test.go b/itests/sector_prefer_no_upgrade_test.go
index 30674b36e38..0294899d9ad 100644
--- a/itests/sector_prefer_no_upgrade_test.go
+++ b/itests/sector_prefer_no_upgrade_test.go
@@ -34,12 +34,12 @@ func TestPreferNoUpgrade(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner + 1)
-	Sealed := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner + 2)
+	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner)
+	Sealed := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner + 1)
 
 	{
 		miner.PledgeSectors(ctx, 1, 0, nil)
-		sl, err := miner.SectorsList(ctx)
+		sl, err := miner.SectorsListNonGenesis(ctx)
 		require.NoError(t, err)
 		require.Len(t, sl, 1, "expected 1 sector")
 		require.Equal(t, CCUpgrade, sl[0], "unexpected sector number")
@@ -53,7 +53,7 @@ func TestPreferNoUpgrade(t *testing.T) {
 		err = miner.SectorMarkForUpgrade(ctx, sl[0], true)
 		require.NoError(t, err)
 
-		sl, err = miner.SectorsList(ctx)
+		sl, err = miner.SectorsListNonGenesis(ctx)
 		require.NoError(t, err)
 		require.Len(t, sl, 1, "expected 1 sector")
 	}
@@ -68,7 +68,7 @@ func TestPreferNoUpgrade(t *testing.T) {
 		kit.AssertFilesEqual(t, inPath, outPath)
 	}
 
-	sl, err := miner.SectorsList(ctx)
+	sl, err := miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 2, "expected 2 sectors")
 
diff --git a/itests/sector_revert_available_test.go b/itests/sector_revert_available_test.go
index 559e8e8b050..99d410e9537 100644
--- a/itests/sector_revert_available_test.go
+++ b/itests/sector_revert_available_test.go
@@ -31,11 +31,11 @@ func TestAbortUpgradeAvailable(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner + 1)
+	CCUpgrade := abi.SectorNumber(kit.DefaultPresealsPerBootstrapMiner)
 	fmt.Printf("CCUpgrade: %d\n", CCUpgrade)
 
 	miner.PledgeSectors(ctx, 1, 0, nil)
-	sl, err := miner.SectorsList(ctx)
+	sl, err := miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 	require.Equal(t, CCUpgrade, sl[0], "unexpected sector number")
@@ -49,7 +49,7 @@ func TestAbortUpgradeAvailable(t *testing.T) {
 	err = miner.SectorMarkForUpgrade(ctx, sl[0], true)
 	require.NoError(t, err)
 
-	sl, err = miner.SectorsList(ctx)
+	sl, err = miner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	require.Len(t, sl, 1, "expected 1 sector")
 
diff --git a/itests/wdpost_dispute_test.go b/itests/wdpost_dispute_test.go
index f26adb39b56..0982f44c876 100644
--- a/itests/wdpost_dispute_test.go
+++ b/itests/wdpost_dispute_test.go
@@ -94,7 +94,7 @@ func TestWindowPostDispute(t *testing.T) {
 	require.Equal(t, p.MinerPower.RawBytePower, types.NewInt(uint64(ssz)))
 
 	//stm: @MINER_SECTOR_LIST_001
-	evilSectors, err := evilMiner.SectorsList(ctx)
+	evilSectors, err := evilMiner.SectorsListNonGenesis(ctx)
 	require.NoError(t, err)
 	evilSectorNo := evilSectors[0] // only one.
 	//stm: @CHAIN_STATE_SECTOR_PARTITION_001
diff --git a/node/impl/storminer.go b/node/impl/storminer.go
index 7f595af08d0..74f4429efc4 100644
--- a/node/impl/storminer.go
+++ b/node/impl/storminer.go
@@ -1213,6 +1213,22 @@ func (sm *StorageMinerAPI) StorageAddLocal(ctx context.Context, path string) err
 	return sm.StorageMgr.AddLocalStorage(ctx, path)
 }
 
+func (sm *StorageMinerAPI) StorageDetachLocal(ctx context.Context, path string) error {
+	if sm.StorageMgr == nil {
+		return xerrors.Errorf("no storage manager")
+	}
+
+	return sm.StorageMgr.DetachLocalStorage(ctx, path)
+}
+
+func (sm *StorageMinerAPI) StorageRedeclareLocal(ctx context.Context, id *storiface.ID, dropMissing bool) error {
+	if sm.StorageMgr == nil {
+		return xerrors.Errorf("no storage manager")
+	}
+
+	return sm.StorageMgr.RedeclareLocalStorage(ctx, id, dropMissing)
+}
+
 func (sm *StorageMinerAPI) PiecesListPieces(ctx context.Context) ([]cid.Cid, error) {
 	return sm.PieceStore.ListPieceInfoKeys()
 }
diff --git a/storage/paths/index.go b/storage/paths/index.go
index 97371a87551..ba387a3f768 100644
--- a/storage/paths/index.go
+++ b/storage/paths/index.go
@@ -30,6 +30,7 @@ var SkippedHeartbeatThresh = HeartbeatInterval * 5
 
 type SectorIndex interface { // part of storage-miner api
 	StorageAttach(context.Context, storiface.StorageInfo, fsutil.FsStat) error
+	StorageDetach(ctx context.Context, id storiface.ID, url string) error
 	StorageInfo(context.Context, storiface.ID) (storiface.StorageInfo, error)
 	StorageReportHealth(context.Context, storiface.ID, storiface.HealthReport) error
 
@@ -217,6 +218,94 @@ func (i *Index) StorageAttach(ctx context.Context, si storiface.StorageInfo, st
 	return nil
 }
 
+func (i *Index) StorageDetach(ctx context.Context, id storiface.ID, url string) error {
+	i.lk.Lock()
+	defer i.lk.Unlock()
+
+	// ent: *storageEntry
+	ent, ok := i.stores[id]
+	if !ok {
+		return xerrors.Errorf("storage '%s' isn't registered", id)
+	}
+
+	// check if this is the only path provider/url for this pathID
+	drop := true
+	if len(ent.info.URLs) > 0 {
+		drop = len(ent.info.URLs) == 1 // only one url
+
+		if drop && ent.info.URLs[0] != url {
+			return xerrors.Errorf("not dropping path, requested and index urls don't match ('%s' != '%s')", url, ent.info.URLs[0])
+		}
+	}
+
+	if drop {
+		if a, hasAlert := i.pathAlerts[id]; hasAlert && i.alerting != nil {
+			if i.alerting.IsRaised(a) {
+				i.alerting.Resolve(a, map[string]string{
+					"message": "path detached",
+				})
+			}
+			delete(i.pathAlerts, id)
+		}
+
+		// stats
+		var droppedEntries, primaryEntries, droppedDecls int
+
+		// drop declarations
+		for decl, dms := range i.sectors {
+			var match bool
+			for _, dm := range dms {
+				if dm.storage == id {
+					match = true
+					droppedEntries++
+					if dm.primary {
+						primaryEntries++
+					}
+					break
+				}
+			}
+
+			// if no entries match, nothing to do here
+			if !match {
+				continue
+			}
+
+			// if there's a match, and only one entry, drop the whole declaration
+			if len(dms) <= 1 {
+				delete(i.sectors, decl)
+				droppedDecls++
+				continue
+			}
+
+			// rewrite entries with the path we're dropping filtered out
+			filtered := make([]*declMeta, 0, len(dms)-1)
+			for _, dm := range dms {
+				if dm.storage != id {
+					filtered = append(filtered, dm)
+				}
+			}
+
+			i.sectors[decl] = filtered
+		}
+
+		delete(i.stores, id)
+
+		log.Warnw("Dropping sector storage", "path", id, "url", url, "droppedEntries", droppedEntries, "droppedPrimaryEntries", primaryEntries, "droppedDecls", droppedDecls)
+	} else {
+		newUrls := make([]string, 0, len(ent.info.URLs))
+		for _, u := range ent.info.URLs {
+			if u != url {
+				newUrls = append(newUrls, u)
+			}
+		}
+		ent.info.URLs = newUrls
+
+		log.Warnw("Dropping sector path endpoint", "path", id, "url", url)
+	}
+
+	return nil
+}
+
 func (i *Index) StorageReportHealth(ctx context.Context, id storiface.ID, report storiface.HealthReport) error {
 	i.lk.Lock()
 	defer i.lk.Unlock()
diff --git a/storage/paths/local.go b/storage/paths/local.go
index 698da1e7503..552b1738df3 100644
--- a/storage/paths/local.go
+++ b/storage/paths/local.go
@@ -218,6 +218,10 @@ func (st *Local) OpenPath(ctx context.Context, p string) error {
 		return xerrors.Errorf("unmarshalling storage metadata for %s: %w", p, err)
 	}
 
+	if p, exists := st.paths[meta.ID]; exists {
+		return xerrors.Errorf("path with ID %s already opened: '%s'", meta.ID, p.local)
+	}
+
 	// TODO: Check existing / dedupe
 
 	out := &path{
@@ -249,7 +253,7 @@ func (st *Local) OpenPath(ctx context.Context, p string) error {
 		return xerrors.Errorf("declaring storage in index: %w", err)
 	}
 
-	if err := st.declareSectors(ctx, p, meta.ID, meta.CanStore); err != nil {
+	if err := st.declareSectors(ctx, p, meta.ID, meta.CanStore, false); err != nil {
 		return err
 	}
 
@@ -258,6 +262,25 @@ func (st *Local) OpenPath(ctx context.Context, p string) error {
 	return nil
 }
 
+func (st *Local) ClosePath(ctx context.Context, id storiface.ID) error {
+	st.localLk.Lock()
+	defer st.localLk.Unlock()
+
+	if _, exists := st.paths[id]; !exists {
+		return xerrors.Errorf("path with ID %s isn't opened", id)
+	}
+
+	for _, url := range st.urls {
+		if err := st.index.StorageDetach(ctx, id, url); err != nil {
+			return xerrors.Errorf("dropping path (id='%s' url='%s'): %w", id, url, err)
+		}
+	}
+
+	delete(st.paths, id)
+
+	return nil
+}
+
 func (st *Local) open(ctx context.Context) error {
 	cfg, err := st.localStorage.GetStorage()
 	if err != nil {
@@ -276,7 +299,7 @@ func (st *Local) open(ctx context.Context) error {
 	return nil
 }
 
-func (st *Local) Redeclare(ctx context.Context) error {
+func (st *Local) Redeclare(ctx context.Context, filterId *storiface.ID, dropMissingDecls bool) error {
 	st.localLk.Lock()
 	defer st.localLk.Unlock()
 
@@ -300,6 +323,9 @@ func (st *Local) Redeclare(ctx context.Context) error {
 			log.Errorf("storage path ID changed: %s; %s -> %s", p.local, id, meta.ID)
 			continue
 		}
+		if filterId != nil && *filterId != id {
+			continue
+		}
 
 		err = st.index.StorageAttach(ctx, storiface.StorageInfo{
 			ID:         id,
@@ -317,7 +343,7 @@ func (st *Local) Redeclare(ctx context.Context) error {
 			return xerrors.Errorf("redeclaring storage in index: %w", err)
 		}
 
-		if err := st.declareSectors(ctx, p.local, meta.ID, meta.CanStore); err != nil {
+		if err := st.declareSectors(ctx, p.local, meta.ID, meta.CanStore, dropMissingDecls); err != nil {
 			return xerrors.Errorf("redeclaring sectors: %w", err)
 		}
 	}
@@ -325,7 +351,24 @@ func (st *Local) Redeclare(ctx context.Context) error {
 	return nil
 }
 
-func (st *Local) declareSectors(ctx context.Context, p string, id storiface.ID, primary bool) error {
+func (st *Local) declareSectors(ctx context.Context, p string, id storiface.ID, primary, dropMissing bool) error {
+	indexed := map[storiface.Decl]struct{}{}
+	if dropMissing {
+		decls, err := st.index.StorageList(ctx)
+		if err != nil {
+			return xerrors.Errorf("getting declaration list: %w", err)
+		}
+
+		for _, decl := range decls[id] {
+			for _, fileType := range decl.SectorFileType.AllSet() {
+				indexed[storiface.Decl{
+					SectorID:       decl.SectorID,
+					SectorFileType: fileType,
+				}] = struct{}{}
+			}
+		}
+	}
+
 	for _, t := range storiface.PathTypes {
 		ents, err := ioutil.ReadDir(filepath.Join(p, t.String()))
 		if err != nil {
@@ -349,12 +392,29 @@ func (st *Local) declareSectors(ctx context.Context, p string, id storiface.ID,
 				return xerrors.Errorf("parse sector id %s: %w", ent.Name(), err)
 			}
 
+			delete(indexed, storiface.Decl{
+				SectorID:       sid,
+				SectorFileType: t,
+			})
+
 			if err := st.index.StorageDeclareSector(ctx, id, sid, t, primary); err != nil {
 				return xerrors.Errorf("declare sector %d(t:%d) -> %s: %w", sid, t, id, err)
 			}
 		}
 	}
 
+	if len(indexed) > 0 {
+		log.Warnw("index contains sectors which are missing in the storage path", "count", len(indexed), "dropMissing", dropMissing)
+	}
+
+	if dropMissing {
+		for decl := range indexed {
+			if err := st.index.StorageDropSector(ctx, id, decl.SectorID, decl.SectorFileType); err != nil {
+				return xerrors.Errorf("dropping sector %v from index: %w", decl, err)
+			}
+		}
+	}
+
 	return nil
 }
 
diff --git a/storage/paths/mocks/index.go b/storage/paths/mocks/index.go
index 030692b8f5f..6fdcb03b9ec 100644
--- a/storage/paths/mocks/index.go
+++ b/storage/paths/mocks/index.go
@@ -82,6 +82,20 @@ func (mr *MockSectorIndexMockRecorder) StorageDeclareSector(arg0, arg1, arg2, ar
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "StorageDeclareSector", reflect.TypeOf((*MockSectorIndex)(nil).StorageDeclareSector), arg0, arg1, arg2, arg3, arg4)
 }
 
+// StorageDetach mocks base method.
+func (m *MockSectorIndex) StorageDetach(arg0 context.Context, arg1 storiface.ID, arg2 string) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "StorageDetach", arg0, arg1, arg2)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// StorageDetach indicates an expected call of StorageDetach.
+func (mr *MockSectorIndexMockRecorder) StorageDetach(arg0, arg1, arg2 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "StorageDetach", reflect.TypeOf((*MockSectorIndex)(nil).StorageDetach), arg0, arg1, arg2)
+}
+
 // StorageDropSector mocks base method.
 func (m *MockSectorIndex) StorageDropSector(arg0 context.Context, arg1 storiface.ID, arg2 abi.SectorID, arg3 storiface.SectorFileType) error {
 	m.ctrl.T.Helper()
diff --git a/storage/sealer/manager.go b/storage/sealer/manager.go
index 68eae077cd7..6733674ffa0 100644
--- a/storage/sealer/manager.go
+++ b/storage/sealer/manager.go
@@ -238,6 +238,58 @@ func (m *Manager) AddLocalStorage(ctx context.Context, path string) error {
 	return nil
 }
 
+func (m *Manager) DetachLocalStorage(ctx context.Context, path string) error {
+	path, err := homedir.Expand(path)
+	if err != nil {
+		return xerrors.Errorf("expanding local path: %w", err)
+	}
+
+	// check that we have the path opened
+	lps, err := m.localStore.Local(ctx)
+	if err != nil {
+		return xerrors.Errorf("getting local path list: %w", err)
+	}
+
+	var localPath *storiface.StoragePath
+	for _, lp := range lps {
+		if lp.LocalPath == path {
+			lp := lp // copy to make the linter happy
+			localPath = &lp
+			break
+		}
+	}
+	if localPath == nil {
+		return xerrors.Errorf("no local paths match '%s'", path)
+	}
+
+	// drop from the persisted storage.json
+	var found bool
+	if err := m.ls.SetStorage(func(sc *paths.StorageConfig) {
+		out := make([]paths.LocalPath, 0, len(sc.StoragePaths))
+		for _, storagePath := range sc.StoragePaths {
+			if storagePath.Path != path {
+				out = append(out, storagePath)
+				continue
+			}
+			found = true
+		}
+		sc.StoragePaths = out
+	}); err != nil {
+		return xerrors.Errorf("set storage config: %w", err)
+	}
+	if !found {
+		// maybe this is fine?
+		return xerrors.Errorf("path not found in storage.json")
+	}
+
+	// unregister locally, drop from sector index
+	return m.localStore.ClosePath(ctx, localPath.ID)
+}
+
+func (m *Manager) RedeclareLocalStorage(ctx context.Context, id *storiface.ID, dropMissing bool) error {
+	return m.localStore.Redeclare(ctx, id, dropMissing)
+}
+
 func (m *Manager) AddWorker(ctx context.Context, w Worker) error {
 	sessID, err := w.Session(ctx)
 	if err != nil {
diff --git a/storage/sealer/storiface/filetype.go b/storage/sealer/storiface/filetype.go
index 5aca9f4db7c..4660dd2a7fc 100644
--- a/storage/sealer/storiface/filetype.go
+++ b/storage/sealer/storiface/filetype.go
@@ -99,6 +99,18 @@ func (t SectorFileType) Strings() []string {
 	return out
 }
 
+func (t SectorFileType) AllSet() []SectorFileType {
+	var out []SectorFileType
+	for _, fileType := range PathTypes {
+		if fileType&t == 0 {
+			continue
+		}
+
+		out = append(out, fileType)
+	}
+	return out
+}
+
 func (t SectorFileType) Has(singleType SectorFileType) bool {
 	return t&singleType == singleType
 }