diff --git a/go.mod b/go.mod
index 4a54023c99..ae244c11f5 100644
--- a/go.mod
+++ b/go.mod
@@ -134,6 +134,7 @@ require (
 	go.uber.org/zap v1.10.0 // indirect
 	golang.org/x/crypto v0.0.0-20191002192127-34f69633bfdc
 	golang.org/x/net v0.0.0-20191007182048-72f939374954
+	golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6
 	golang.org/x/sys v0.0.0-20191008105621-543471e840be
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20191008142428-8d021180e987
 	google.golang.org/grpc v1.19.0
diff --git a/pkg/compute/models/groups.go b/pkg/compute/models/groups.go
index d5e0a9778b..d600439d6a 100644
--- a/pkg/compute/models/groups.go
+++ b/pkg/compute/models/groups.go
@@ -18,7 +18,9 @@ import (
 	"context"
 	"database/sql"
 
+	"golang.org/x/sync/errgroup"
 	"yunion.io/x/jsonutils"
+	"yunion.io/x/log"
 	"yunion.io/x/pkg/errors"
 	"yunion.io/x/pkg/tristate"
 	"yunion.io/x/pkg/util/sets"
@@ -72,7 +74,7 @@ type SGroup struct {
 func (sm *SGroupManager) ListItemFilter(ctx context.Context, q *sqlchemy.SQuery, userCred mcclient.TokenCredential,
 	query jsonutils.JSONObject) (*sqlchemy.SQuery, error) {
 
-	guestFilter := jsonutils.GetAnyString(query, []string{"guest", "guest_id"})
+	guestFilter := jsonutils.GetAnyString(query, []string{"server", "guest"})
 	if len(guestFilter) != 0 {
 		guestObj, err := GuestManager.FetchByIdOrName(userCred, guestFilter)
 		if err != nil {
@@ -84,37 +86,36 @@ func (sm *SGroupManager) ListItemFilter(ctx context.Context, q *sqlchemy.SQuery,
 	return q, nil
 }
 
-func (sp *SGroup) GetCustomizeColumns(ctx context.Context, userCred mcclient.TokenCredential,
+func (group *SGroup) GetCustomizeColumns(ctx context.Context, userCred mcclient.TokenCredential,
 	query jsonutils.JSONObject) *jsonutils.JSONDict {
-	extra := sp.SVirtualResourceBase.GetCustomizeColumns(ctx, userCred, query)
-	ret, _ := sp.getMoreDetails(ctx, userCred, extra)
+	extra := group.SVirtualResourceBase.GetCustomizeColumns(ctx, userCred, query)
+	ret, _ := group.getMoreDetails(ctx, userCred, extra)
 	return ret
 }
 
-func (sp *SGroup) GetExtraDetails(ctx context.Context, userCred mcclient.TokenCredential,
+func (group *SGroup) GetExtraDetails(ctx context.Context, userCred mcclient.TokenCredential,
 	query jsonutils.JSONObject) (*jsonutils.JSONDict, error) {
-	extra, err := sp.SVirtualResourceBase.GetExtraDetails(ctx, userCred, query)
+	extra, err := group.SVirtualResourceBase.GetExtraDetails(ctx, userCred, query)
 	if err != nil {
 		return nil, err
 	}
-	return sp.getMoreDetails(ctx, userCred, extra)
+	return group.getMoreDetails(ctx, userCred, extra)
 }
 
-func (sp *SGroup) getMoreDetails(ctx context.Context, userCred mcclient.TokenCredential,
+func (group *SGroup) getMoreDetails(ctx context.Context, userCred mcclient.TokenCredential,
 	query jsonutils.JSONObject) (*jsonutils.JSONDict, error) {
 	ret := query.(*jsonutils.JSONDict)
-	ret.Add(jsonutils.JSONTrue, "enabled")
-	q := GroupguestManager.Query().Equals("group_id", sp.Id)
+	q := GroupguestManager.Query().Equals("group_id", group.Id)
 	count, _ := q.CountWithError()
 	ret.Add(jsonutils.NewInt(int64(count)), "guest_count")
 	return ret, nil
 }
 
-func (s *SGroup) ValidateDeleteCondition(ctx context.Context) error {
-	q := GroupguestManager.Query().Equals("group_id", s.Id)
+func (group *SGroup) ValidateDeleteCondition(ctx context.Context) error {
+	q := GroupguestManager.Query().Equals("group_id", group.Id)
 	count, err := q.CountWithError()
 	if err != nil {
-		return errors.Wrapf(err, "fail to check that if there are any guest in this group %s", s.Name)
+		return errors.Wrapf(err, "fail to check that if there are any guest in this group %s", group.Name)
 	}
 	if count > 0 {
 		return httperrors.NewUnsupportOperationError("请在解绑所有主机后重试")
@@ -140,7 +141,7 @@ func (group *SGroup) AllowPerformBindGuests(ctx context.Context, userCred mcclie
 func (group *SGroup) PerformBindGuests(ctx context.Context, userCred mcclient.TokenCredential,
 	query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
 
-	guestIdSet, err := group.checkGuests(ctx, userCred, query, data)
+	guestIdSet, hostIds, err := group.checkGuests(ctx, userCred, query, data)
 	if err != nil {
 		return nil, err
 	}
@@ -165,6 +166,10 @@ func (group *SGroup) PerformBindGuests(ctx context.Context, userCred mcclient.To
 		}
 	}
 
+	err = group.clearSchedDescCache(hostIds)
+	if err != nil {
+		log.Errorf("fail to clear scheduler desc cache after binding guests successfully: %s", err.Error())
+	}
 	logclient.AddActionLogWithContext(ctx, group, logclient.ACT_VM_ASSOCIATE, nil, userCred, true)
 	return nil, nil
 }
@@ -177,7 +182,7 @@ func (group *SGroup) AllowPerformUnbindGuests(ctx context.Context, userCred mccl
 
 func (group *SGroup) PerformUnbindGuests(ctx context.Context, userCred mcclient.TokenCredential,
 	query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
-	guestIdSet, err := group.checkGuests(ctx, userCred, query, data)
+	guestIdSet, hostIds, err := group.checkGuests(ctx, userCred, query, data)
 	if err != nil {
 		return nil, err
 	}
@@ -200,30 +205,117 @@ func (group *SGroup) PerformUnbindGuests(ctx context.Context, userCred mcclient.
 		}
 	}
 
+	err = group.clearSchedDescCache(hostIds)
+	if err != nil {
+		log.Errorf("fail to clear scheduler desc cache after unbinding guests successfully: %s", err.Error())
+	}
 	logclient.AddActionLogWithContext(ctx, group, logclient.ACT_VM_DISSOCIATE, nil, userCred, true)
 	return nil, nil
 }
 
 func (group *SGroup) checkGuests(ctx context.Context, userCred mcclient.TokenCredential,
-	query jsonutils.JSONObject, data jsonutils.JSONObject) (sets.String, error) {
+	query jsonutils.JSONObject, data jsonutils.JSONObject) (guestIdSet sets.String, hostIds []string, err error) {
 
 	guestIdArr := jsonutils.GetArrayOfPrefix(data, "guest")
 	if len(guestIdArr) == 0 {
-		return nil, httperrors.NewMissingParameterError("guest.0 guest.1 ... ")
+		return nil, nil, httperrors.NewMissingParameterError("guest.0 guest.1 ... ")
 	}
 
-	guestIdSet := sets.NewString()
+	guestIdSet = sets.NewString()
+	hostIdSet := sets.NewString()
 	for i := range guestIdArr {
 		guestIdStr, _ := guestIdArr[i].GetString()
-		guest, err := GuestManager.FetchByIdOrName(userCred, guestIdStr)
+		model, err := GuestManager.FetchByIdOrName(userCred, guestIdStr)
 		if err == sql.ErrNoRows {
-			return nil, httperrors.NewInputParameterError("no such guest %s", guestIdStr)
+			return nil, nil, httperrors.NewInputParameterError("no such model %s", guestIdStr)
 		}
 		if err != nil {
-			return nil, errors.Wrapf(err, "fail to fetch guest by id or name %s", guestIdStr)
+			return nil, nil, errors.Wrapf(err, "fail to fetch model by id or name %s", guestIdStr)
 		}
-		guestIdSet.Insert(guest.GetId())
+		guestIdSet.Insert(model.GetId())
+		guest := model.(*SGuest)
+		hostIdSet.Insert(guest.HostId)
+	}
+	hostIds = hostIdSet.List()
+	return
+}
+
+func (group *SGroup) AllowPerformEnable(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
+	return group.IsOwner(userCred) || db.IsAdminAllowPerform(userCred, group, "enable")
+}
+
+func (group *SGroup) PerformEnable(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
+	if !group.Enabled.IsTrue() {
+		_, err := db.Update(group, func() error {
+			group.Enabled = tristate.True
+			return nil
+		})
+		if err != nil {
+			logclient.AddSimpleActionLog(group, logclient.ACT_ENABLE, nil, userCred, false)
+			return nil, err
+		}
+		err = group.ClearAllScheDescCache()
+		if err != nil {
+			log.Errorf("fail to clean all sche desc cache: %s", err.Error())
+		}
+		db.OpsLog.LogEvent(group, db.ACT_ENABLE, "", userCred)
+		logclient.AddSimpleActionLog(group, logclient.ACT_ENABLE, nil, userCred, true)
+	}
+	return nil, nil
+}
+
+func (group *SGroup) AllowPerformDisable(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) bool {
+	return group.IsOwner(userCred) || db.IsAdminAllowPerform(userCred, group, "disable")
+}
+
+func (group *SGroup) PerformDisable(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data jsonutils.JSONObject) (jsonutils.JSONObject, error) {
+	if group.Enabled.IsTrue() {
+		_, err := db.Update(group, func() error {
+			group.Enabled = tristate.False
+			return nil
+		})
+		if err != nil {
+			logclient.AddSimpleActionLog(group, logclient.ACT_DISABLE, nil, userCred, false)
+			return nil, err
+		}
+		db.OpsLog.LogEvent(group, db.ACT_DISABLE, "", userCred)
+		logclient.AddSimpleActionLog(group, logclient.ACT_DISABLE, nil, userCred, true)
+	}
+	return nil, nil
+}
+
+func (group *SGroup) ClearAllScheDescCache() error {
+	guests, err := group.fetchAllGuests()
+	if err != nil {
+		return errors.Wrapf(err, "fail to fetch all guest of group %s", group.Id)
 	}
 
-	return guestIdSet, nil
+	hostIdSet := sets.NewString()
+	for i := range guests {
+		hostIdSet.Insert(guests[i].HostId)
+	}
+
+	return group.clearSchedDescCache(hostIdSet.List())
+}
+
+func (group *SGroup) clearSchedDescCache(hostIds []string) error {
+	var g errgroup.Group
+	for _, hostId := range hostIds {
+		g.Go(func() error {
+			return HostManager.ClearSchedDescCache(hostId)
+		})
+	}
+	return g.Wait()
+}
+
+func (group *SGroup) fetchAllGuests() ([]SGuest, error) {
+	ggSub := GroupguestManager.Query("guest_id").Equals("group_id", group.GetId()).SubQuery()
+	guestSub := GuestManager.Query().SubQuery()
+	q := guestSub.Query().Join(ggSub, sqlchemy.Equals(ggSub.Field("guest_id"), guestSub.Field("id")))
+	guests := make([]SGuest, 0, 2)
+	err := db.FetchModelObjects(GuestManager, q, &guests)
+	if err != nil {
+		return nil, err
+	}
+	return guests, nil
 }
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index 97d938092d..d70f177989 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -4190,7 +4190,11 @@ func (self *SGuest) PerformBindGroups(ctx context.Context, userCred mcclient.Tok
 			return nil, errors.Wrapf(err, "fail to attch group %s to guest %s", groupId, self.Id)
 		}
 	}
-
+	// ignore error
+	err = self.ClearSchedDescCache()
+	if err != nil {
+		log.Errorf("fail to clear scheduler desc cache after unbinding groups successfully")
+	}
 	logclient.AddActionLogWithContext(ctx, self, logclient.ACT_INSTANCE_GROUP_BIND, nil, userCred, true)
 	return nil, nil
 }
@@ -4224,7 +4228,11 @@ func (self *SGuest) PerformUnbindGroups(ctx context.Context, userCred mcclient.T
 			return nil, errors.Wrapf(err, "fail to detach group %s to guest %s", joint.GroupId, self.Id)
 		}
 	}
-
+	// ignore error
+	err = self.ClearSchedDescCache()
+	if err != nil {
+		log.Errorf("fail to clear scheduler desc cache after binding groups successfully")
+	}
 	logclient.AddActionLogWithContext(ctx, self, logclient.ACT_INSTANCE_GROUP_UNBIND, nil, userCred, true)
 	return nil, nil
 }
diff --git a/pkg/scheduler/algorithm/predicates/instance_group_predicate.go b/pkg/scheduler/algorithm/predicates/instance_group_predicate.go
index af4d195463..dbb5494421 100644
--- a/pkg/scheduler/algorithm/predicates/instance_group_predicate.go
+++ b/pkg/scheduler/algorithm/predicates/instance_group_predicate.go
@@ -78,6 +78,7 @@ func (p *SForcedGroupPredicate) Execute(u *core.Unit, c core.Candidater) (bool,
 				h.AppendPredicateFailMsg(fmt.Sprintf(
 					"the number of guests with same instance group '%s' in this host has reached the upper limit",
 					instanceGroups[id].GetName()))
+				minFree = 0
 				break
 			}
 		} else {
@@ -87,10 +88,6 @@ func (p *SForcedGroupPredicate) Execute(u *core.Unit, c core.Candidater) (bool,
 			minFree = free
 		}
 	}
-	// show that minFree shoule be zero
-	if minFree == math.MaxInt32 {
-		minFree = 0
-	}
 	// chose the min capacity of groups
 	h.SetCapacity(int64(minFree))
 	return h.GetResult()
diff --git a/vendor/golang.org/x/sync/AUTHORS b/vendor/golang.org/x/sync/AUTHORS
new file mode 100644
index 0000000000..15167cd746
--- /dev/null
+++ b/vendor/golang.org/x/sync/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/sync/CONTRIBUTORS b/vendor/golang.org/x/sync/CONTRIBUTORS
new file mode 100644
index 0000000000..1c4577e968
--- /dev/null
+++ b/vendor/golang.org/x/sync/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/sync/LICENSE b/vendor/golang.org/x/sync/LICENSE
new file mode 100644
index 0000000000..6a66aea5ea
--- /dev/null
+++ b/vendor/golang.org/x/sync/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/sync/PATENTS b/vendor/golang.org/x/sync/PATENTS
new file mode 100644
index 0000000000..733099041f
--- /dev/null
+++ b/vendor/golang.org/x/sync/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/sync/errgroup/errgroup.go b/vendor/golang.org/x/sync/errgroup/errgroup.go
new file mode 100644
index 0000000000..9857fe53d3
--- /dev/null
+++ b/vendor/golang.org/x/sync/errgroup/errgroup.go
@@ -0,0 +1,66 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package errgroup provides synchronization, error propagation, and Context
+// cancelation for groups of goroutines working on subtasks of a common task.
+package errgroup
+
+import (
+	"context"
+	"sync"
+)
+
+// A Group is a collection of goroutines working on subtasks that are part of
+// the same overall task.
+//
+// A zero Group is valid and does not cancel on error.
+type Group struct {
+	cancel func()
+
+	wg sync.WaitGroup
+
+	errOnce sync.Once
+	err     error
+}
+
+// WithContext returns a new Group and an associated Context derived from ctx.
+//
+// The derived Context is canceled the first time a function passed to Go
+// returns a non-nil error or the first time Wait returns, whichever occurs
+// first.
+func WithContext(ctx context.Context) (*Group, context.Context) {
+	ctx, cancel := context.WithCancel(ctx)
+	return &Group{cancel: cancel}, ctx
+}
+
+// Wait blocks until all function calls from the Go method have returned, then
+// returns the first non-nil error (if any) from them.
+func (g *Group) Wait() error {
+	g.wg.Wait()
+	if g.cancel != nil {
+		g.cancel()
+	}
+	return g.err
+}
+
+// Go calls the given function in a new goroutine.
+//
+// The first call to return a non-nil error cancels the group; its error will be
+// returned by Wait.
+func (g *Group) Go(f func() error) {
+	g.wg.Add(1)
+
+	go func() {
+		defer g.wg.Done()
+
+		if err := f(); err != nil {
+			g.errOnce.Do(func() {
+				g.err = err
+				if g.cancel != nil {
+					g.cancel()
+				}
+			})
+		}
+	}()
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index dcf2e2e6a7..843897a4d0 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -562,6 +562,8 @@ golang.org/x/net/trace
 # golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421
 golang.org/x/oauth2
 golang.org/x/oauth2/internal
+# golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6
+golang.org/x/sync/errgroup
 # golang.org/x/sys v0.0.0-20191008105621-543471e840be
 golang.org/x/sys/cpu
 golang.org/x/sys/unix