diff --git a/api/api_worker.go b/api/api_worker.go
index 87f41b1f3..fa54cb5e8 100644
--- a/api/api_worker.go
+++ b/api/api_worker.go
@@ -3,12 +3,13 @@ package api
 import (
 	"context"
 
+	"github.com/filecoin-project/sector-storage/sealtasks"
+	"github.com/filecoin-project/sector-storage/stores"
 	"github.com/filecoin-project/sector-storage/storiface"
+	"github.com/filecoin-project/specs-actors/actors/abi"
 	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/build"
-	"github.com/filecoin-project/sector-storage/sealtasks"
-	"github.com/filecoin-project/sector-storage/stores"
 )
 
 type WorkerApi interface {
@@ -20,4 +21,5 @@ type WorkerApi interface {
 	Info(context.Context) (storiface.WorkerInfo, error)
 
 	storage.Sealer
+	Fetch(context.Context, abi.SectorID, stores.SectorFileType, bool) error
 }
diff --git a/api/apistruct/struct.go b/api/apistruct/struct.go
index ca55f2b36..3f1e4a15d 100644
--- a/api/apistruct/struct.go
+++ b/api/apistruct/struct.go
@@ -225,6 +225,8 @@ type WorkerStruct struct {
 		SealCommit1    func(ctx context.Context, sector abi.SectorID, ticket abi.SealRandomness, seed abi.InteractiveSealRandomness, pieces []abi.PieceInfo, cids storage.SectorCids) (storage.Commit1Out, error) `perm:"admin"`
 		SealCommit2    func(context.Context, abi.SectorID, storage.Commit1Out) (storage.Proof, error)                                                                                                             `perm:"admin"`
 		FinalizeSector func(context.Context, abi.SectorID) error                                                                                                                                                  `perm:"admin"`
+
+		Fetch func(context.Context, abi.SectorID, stores.SectorFileType, bool) error `perm:"admin"`
 	}
 }
 
@@ -810,6 +812,10 @@ func (w *WorkerStruct) FinalizeSector(ctx context.Context, sector abi.SectorID)
 	return w.Internal.FinalizeSector(ctx, sector)
 }
 
+func (w *WorkerStruct) Fetch(ctx context.Context, id abi.SectorID, fileType stores.SectorFileType, b bool) error {
+	return w.Internal.Fetch(ctx, id, fileType, b)
+}
+
 var _ api.Common = &CommonStruct{}
 var _ api.FullNode = &FullNodeStruct{}
 var _ api.StorageMiner = &StorageMinerStruct{}
diff --git a/cmd/lotus-seal-worker/main.go b/cmd/lotus-seal-worker/main.go
index 015490036..ff7b0c5df 100644
--- a/cmd/lotus-seal-worker/main.go
+++ b/cmd/lotus-seal-worker/main.go
@@ -153,6 +153,8 @@ var runCmd = &cli.Command{
 
 		var taskTypes []sealtasks.TaskType
 
+		taskTypes = append(taskTypes, sealtasks.TTFetch)
+
 		if cctx.Bool("precommit1") {
 			taskTypes = append(taskTypes, sealtasks.TTPreCommit1)
 		}
diff --git a/cmd/lotus-storage-miner/workers.go b/cmd/lotus-storage-miner/workers.go
index b44c15af6..b6d547480 100644
--- a/cmd/lotus-storage-miner/workers.go
+++ b/cmd/lotus-storage-miner/workers.go
@@ -57,11 +57,7 @@ var workersListCmd = &cli.Command{
 
 			fmt.Printf("Worker %d, host %s\n", stat.id, stat.Info.Hostname)
 
-			if stat.CpuUse != -1 {
-				fmt.Printf("\tCPU: %d core(s) in use\n", stat.CpuUse)
-			} else {
-				fmt.Printf("\tCPU: all cores in use\n")
-			}
+			fmt.Printf("\tCPU: %d core(s) in use\n", stat.CpuUse)
 
 			for _, gpu := range stat.Info.Resources.GPUs {
 				fmt.Printf("\tGPU: %s, %sused\n", gpu, gpuUse)
diff --git a/go.mod b/go.mod
index a7a547cd4..3a5da1f7e 100644
--- a/go.mod
+++ b/go.mod
@@ -24,7 +24,7 @@ require (
 	github.com/filecoin-project/go-padreader v0.0.0-20200210211231-548257017ca6
 	github.com/filecoin-project/go-paramfetch v0.0.2-0.20200218225740-47c639bab663
 	github.com/filecoin-project/go-statestore v0.1.0
-	github.com/filecoin-project/sector-storage v0.0.0-20200423222053-9eb049a833b9
+	github.com/filecoin-project/sector-storage v0.0.0-20200428103407-5f1a27d52b30
 	github.com/filecoin-project/specs-actors v1.0.1-0.20200424220637-349bd6297517
 	github.com/filecoin-project/specs-storage v0.0.0-20200417134612-61b2d91a6102
 	github.com/filecoin-project/storage-fsm v0.0.0-20200423114251-f3bea4aa8bd7
diff --git a/go.sum b/go.sum
index 047814ead..f4df2d2b4 100644
--- a/go.sum
+++ b/go.sum
@@ -169,10 +169,11 @@ github.com/filecoin-project/go-statestore v0.1.0 h1:t56reH59843TwXHkMcwyuayStBIi
 github.com/filecoin-project/go-statestore v0.1.0/go.mod h1:LFc9hD+fRxPqiHiaqUEZOinUJB4WARkRfNl10O7kTnI=
 github.com/filecoin-project/lotus v0.2.10/go.mod h1:om5PQA9ZT0lf16qI7Fz/ZGLn4LDCMqPC8ntZA9uncRE=
 github.com/filecoin-project/sector-storage v0.0.0-20200411000242-61616264b16d/go.mod h1:/yueJueMh0Yc+0G1adS0lhnedcSnjY86EjKsA20+DVY=
-github.com/filecoin-project/sector-storage v0.0.0-20200423222053-9eb049a833b9 h1:Nj+kxEXRZsgKUPwpH+N57SuL8zYlmqXA1E2k2r6H6Hc=
-github.com/filecoin-project/sector-storage v0.0.0-20200423222053-9eb049a833b9/go.mod h1:ooso9kOFQaZwk50u+Wc/tRISeETwuDREef8pC3EHQCI=
+github.com/filecoin-project/sector-storage v0.0.0-20200428103407-5f1a27d52b30 h1:MlenH1KWLpDHgPzP0BhZ2I87M52GTv/JDWkoOkjhhbU=
+github.com/filecoin-project/sector-storage v0.0.0-20200428103407-5f1a27d52b30/go.mod h1:q/V90xaSKTlu7KovS0uj+cAvlPPFrGn141ZO3iQNEdw=
 github.com/filecoin-project/specs-actors v0.0.0-20200210130641-2d1fbd8672cf/go.mod h1:xtDZUB6pe4Pksa/bAJbJ693OilaC5Wbot9jMhLm3cZA=
 github.com/filecoin-project/specs-actors v0.0.0-20200409043918-e569f4a2f504/go.mod h1:mdJraXq5vMy0+/FqVQIrnNlpQ/Em6zeu06G/ltQ0/lA=
+github.com/filecoin-project/specs-actors v0.2.0/go.mod h1:nQYnFbQ7Y0bHZyq6HDEuVlCPR+U3z5Q3wMOQ+2aiV+Y=
 github.com/filecoin-project/specs-actors v1.0.0/go.mod h1:nQYnFbQ7Y0bHZyq6HDEuVlCPR+U3z5Q3wMOQ+2aiV+Y=
 github.com/filecoin-project/specs-actors v1.0.1-0.20200424220637-349bd6297517 h1:Qi8xaf90j4pdMn8NZZ8FWROsvaTu2iD/C2TT7gDRNQw=
 github.com/filecoin-project/specs-actors v1.0.1-0.20200424220637-349bd6297517/go.mod h1:nQYnFbQ7Y0bHZyq6HDEuVlCPR+U3z5Q3wMOQ+2aiV+Y=