diff --git a/tests/runfiles/linux.run b/tests/runfiles/linux.run
index ff82e0c83..a6185f982 100644
--- a/tests/runfiles/linux.run
+++ b/tests/runfiles/linux.run
@@ -179,12 +179,16 @@ tests = ['procfs_list_basic', 'procfs_list_concurrent_readers',
 tags = ['functional', 'procfs']
 
 [tests/functional/projectquota:Linux]
-tests = ['projectid_001_pos', 'projectid_002_pos', 'projectid_003_pos',
+tests = ['defaultprojectquota_001_pos', 'defaultprojectquota_002_pos',
+    'defaultprojectquota_003_neg', 'defaultprojectquota_004_pos',
+    'defaultprojectquota_005_pos', 'defaultprojectquota_006_pos',
+    'defaultprojectquota_007_pos',
+    'projectid_001_pos', 'projectid_002_pos', 'projectid_003_pos',
     'projectquota_001_pos', 'projectquota_002_pos', 'projectquota_003_pos',
     'projectquota_004_neg', 'projectquota_005_pos', 'projectquota_006_pos',
     'projectquota_007_pos', 'projectquota_008_pos', 'projectquota_009_pos',
     'projectspace_001_pos', 'projectspace_002_pos', 'projectspace_003_pos',
-    'projectspace_004_pos',
+    'projectspace_004_pos', 'projectspace_005_pos',
     'projecttree_001_pos', 'projecttree_002_pos', 'projecttree_003_neg']
 tags = ['functional', 'projectquota']
 
diff --git a/tests/zfs-tests/tests/Makefile.am b/tests/zfs-tests/tests/Makefile.am
index 2f71783ba..beed1a3ee 100644
--- a/tests/zfs-tests/tests/Makefile.am
+++ b/tests/zfs-tests/tests/Makefile.am
@@ -1761,10 +1761,18 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \
 	functional/projectquota/projectquota_007_pos.ksh \
 	functional/projectquota/projectquota_008_pos.ksh \
 	functional/projectquota/projectquota_009_pos.ksh \
+	functional/projectquota/defaultprojectquota_001_pos.ksh \
+	functional/projectquota/defaultprojectquota_002_pos.ksh \
+	functional/projectquota/defaultprojectquota_003_neg.ksh \
+	functional/projectquota/defaultprojectquota_004_pos.ksh \
+	functional/projectquota/defaultprojectquota_005_pos.ksh \
+	functional/projectquota/defaultprojectquota_006_pos.ksh \
+	functional/projectquota/defaultprojectquota_007_pos.ksh \
 	functional/projectquota/projectspace_001_pos.ksh \
 	functional/projectquota/projectspace_002_pos.ksh \
 	functional/projectquota/projectspace_003_pos.ksh \
 	functional/projectquota/projectspace_004_pos.ksh \
+	functional/projectquota/projectspace_005_pos.ksh \
 	functional/projectquota/projecttree_001_pos.ksh \
 	functional/projectquota/projecttree_002_pos.ksh \
 	functional/projectquota/projecttree_003_neg.ksh \
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_001_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_001_pos.ksh
new file mode 100755
index 000000000..337f474b9
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_001_pos.ksh
@@ -0,0 +1,88 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+#
+# DESCRIPTION:
+#	Check the basic function of the defaultproject{obj}quota
+#
+#
+# STRATEGY:
+#	1. Set defaultprojectquota and overwrite the quota size.
+#	2. The write operation should fail.
+#	3. Set defaultprojectobjquota and overcreate the quota size.
+#	4. More create should fail.
+#	5. More chattr to such project should fail.
+#
+
+function cleanup
+{
+	cleanup_projectquota
+}
+
+if ! lsattr -pd > /dev/null 2>&1; then
+	log_unsupported "Current e2fsprogs does not support set/show project ID"
+fi
+
+log_onexit cleanup
+
+log_assert "If operation overwrite defaultproject{obj}quota size, it will fail"
+
+mkmount_writable $QFS
+
+log_note "Check the defaultprojectquota"
+log_must user_run $PUSER mkdir $PRJDIR
+log_must chattr +P -p $PRJID1 $PRJDIR
+
+log_must zfs set defaultprojectquota=$PQUOTA_LIMIT $QFS
+log_must user_run $PUSER mkfile $PQUOTA_LIMIT $PRJDIR/qf
+sync_pool
+log_mustnot user_run $PUSER mkfile 1 $PRJDIR/of
+
+log_must rm -rf $PRJDIR
+
+log_note "Check the defaultprojectobjquota"
+log_must zfs set xattr=sa $QFS
+log_must user_run $PUSER mkdir $PRJDIR
+log_must chattr +P -p $PRJID2 $PRJDIR
+
+log_must zfs set defaultprojectobjquota=$PQUOTA_OBJLIMIT $QFS
+log_must user_run $PUSER mkfiles $PRJDIR/qf_ $((PQUOTA_OBJLIMIT - 1))
+sync_pool
+log_mustnot user_run $PUSER mkfile 1 $PRJDIR/of
+
+log_must user_run $PUSER touch $PRJFILE
+log_must user_run $PUSER chattr -p 123 $PRJFILE
+log_mustnot user_run $PUSER chattr -p $PRJID2 $PRJFILE
+
+log_pass "Operation overwrite defaultproject{obj}quota size failed as expect"
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_002_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_002_pos.ksh
new file mode 100755
index 000000000..aeaca2590
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_002_pos.ksh
@@ -0,0 +1,86 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	The defaultproject{obj}quota can be set during zpool or zfs creation
+#
+#
+# STRATEGY:
+#	1. Set defaultproject{obj}quota via "zpool -O or zfs create -o"
+#
+
+verify_runnable "global"
+
+function cleanup
+{
+	if poolexists $TESTPOOL1; then
+		log_must zpool destroy $TESTPOOL1
+	fi
+
+	if [[ -f $pool_vdev ]]; then
+		rm -f $pool_vdev
+	fi
+}
+
+log_onexit cleanup
+
+log_assert "The defaultproject{obj}quota can be set during zpool,zfs creation"
+
+typeset pool_vdev=$TEST_BASE_DIR/pool_dev.$$
+
+log_must mkfile 500m $pool_vdev
+
+if poolexists $TESTPOOL1; then
+	zpool destroy $TESTPOOL1
+fi
+
+log_must zpool create -O defaultprojectquota=$PQUOTA_LIMIT \
+	-O defaultprojectobjquota=$PQUOTA_OBJLIMIT $TESTPOOL1 $pool_vdev
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL1 > /dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL1 "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL1 "$PQUOTA_OBJLIMIT"
+
+log_must zfs create -o defaultprojectquota=$PQUOTA_LIMIT \
+	-o defaultprojectobjquota=$PQUOTA_OBJLIMIT $TESTPOOL1/fs
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL1 > /dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL1/fs "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL1/fs "$PQUOTA_OBJLIMIT"
+
+log_pass "The defaultproject{obj}quota can be set during zpool,zfs creation"
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_003_neg.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_003_neg.ksh
new file mode 100755
index 000000000..0111e5e98
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_003_neg.ksh
@@ -0,0 +1,76 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	Check the invalid parameter of zfs set defaultproject{obj}quota
+#
+#
+# STRATEGY:
+#	1. check the invalid zfs set defaultproject{obj}quota to fs
+#	2. check the valid zfs set defaultproject{obj}quota to snapshots
+#
+
+function cleanup
+{
+	datasetexists $snap_fs && destroy_dataset $snap_fs
+
+	log_must cleanup_projectquota
+}
+
+log_onexit cleanup
+
+log_assert "Check the invalid parameter of zfs set defaultproject{obj}quota"
+typeset snap_fs=$QFS@snap
+
+log_must zfs snapshot $snap_fs
+
+log_note "can set all numeric id even if that id does not exist"
+log_must zfs set defaultprojectquota=100m $QFS
+
+set -A sizes "100mfsd" "m0.12m" "GGM" "-1234-m" "123m-m"
+for size in "${sizes[@]}"; do
+	log_note "can not set defaultprojectquota with invalid size parameter"
+	log_mustnot zfs set defaultprojectquota=$size $QFS
+done
+
+log_note "can not set defaultprojectquota to snapshot $snap_fs"
+log_mustnot zfs set defaultprojectquota=100m $snap_fs
+
+log_note "can not set defaultprojectobjquota with invalid size parameter"
+log_mustnot zfs set defaultprojectobjquota=100msfsd $QFS
+
+log_note "can not set defaultprojectobjquota to snapshot $snap_fs"
+log_mustnot zfs set defaultprojectobjquota=100m $snap_fs
+
+log_pass "Check the invalid parameter of zfs set defaultproject{obj}quota"
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_004_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_004_pos.ksh
new file mode 100755
index 000000000..b833e96b5
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_004_pos.ksh
@@ -0,0 +1,66 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	Check the invalid parameter of zfs get defaultproject{obj}quota
+#
+#
+# STRATEGY:
+#	1. check the invalid zfs get defaultproject{obj}quota to fs
+#	2. check the valid zfs get defaultproject{obj}quota to snapshots
+#
+
+function cleanup
+{
+	datasetexists $snap_fs && destroy_dataset $snap_fs
+
+	log_must cleanup_projectquota
+}
+
+log_onexit cleanup
+
+log_assert "Check the invalid parameter of zfs get defaultproject{obj}quota"
+typeset snap_fs=$QFS@snap
+
+log_must zfs snapshot $snap_fs
+
+set -A no_prjs "mms1234" "ss@#" "root-122"
+for prj in "${no_prjs[@]}"; do
+	log_must eval "zfs get defaultprojectquota $QFS >/dev/null 2>&1"
+	log_must eval "zfs get defaultprojectquota $snap_fs >/dev/null 2>&1"
+	log_must eval "zfs get defaultprojectobjquota $QFS >/dev/null 2>&1"
+	log_must eval "zfs get defaultprojectobjquota $snap_fs >/dev/null 2>&1"
+done
+
+log_pass "Check the invalid parameter of zfs get defaultproject{obj}quota"
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_005_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_005_pos.ksh
new file mode 100755
index 000000000..b828b4645
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_005_pos.ksh
@@ -0,0 +1,75 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	defaultprojectquota can be set beyond the fs quota.
+#	defaultprojectquota can be set at a smaller size than its current usage.
+#
+# STRATEGY:
+#	1. set quota to a fs and set a larger size of defaultprojectquota
+#	2. write some data to the fs and set a smaller defaultprojectquota
+#
+
+function cleanup
+{
+	log_must cleanup_projectquota
+	log_must zfs set quota=none $QFS
+}
+
+if ! lsattr -pd > /dev/null 2>&1; then
+	log_unsupported "Current e2fsprogs does not support set/show project ID"
+fi
+
+log_onexit cleanup
+
+log_assert "Check set defaultprojectquota to larger than the quota size of a fs"
+
+log_must zfs set quota=200m $QFS
+log_must zfs set defaultprojectquota=500m $QFS
+
+log_must zfs get defaultprojectquota $QFS
+
+log_note "write some data to the $QFS"
+mkmount_writable $QFS
+log_must user_run $PUSER mkdir $PRJDIR
+log_must chattr +P -p $PRJID1 $PRJDIR
+log_must user_run $PUSER mkfile 100m $PRJDIR/qf
+sync_all_pools
+
+log_note "set defaultprojectquota at a smaller size than it current usage"
+log_must zfs set defaultprojectquota=90m $QFS
+
+log_must zfs get defaultprojectquota $QFS
+
+log_pass "set defaultprojectquota to larger than quota size of a fs"
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_006_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_006_pos.ksh
new file mode 100755
index 000000000..e49fe64c9
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_006_pos.ksh
@@ -0,0 +1,89 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	Check defaultproject{obj}quota to snapshot that:
+#	1) can not set defaultproject{obj}quota to snapshot directly
+#	2) snapshot can inherit the parent fs's defaultproject{obj}quota
+#	3) the defaultproject{obj}quota will not change even the parent quota changed.
+#
+#
+# STRATEGY:
+#	1. create a snapshot of a fs
+#	2. set the defaultproject{obj}quota to snapshot and expect fail
+#	3. set defaultproject{obj}quota to fs and check the snapshot
+#	4. re-set defaultproject{obj}quota to fs and check the snapshot's value
+#
+
+function cleanup
+{
+	datasetexists $snap_fs && destroy_dataset $snap_fs
+
+	log_must cleanup_projectquota
+}
+
+log_onexit cleanup
+
+log_assert "Check the snapshot's defaultproject{obj}quota"
+typeset snap_fs=$QFS@snap
+
+
+log_must zfs set defaultprojectquota=$PQUOTA_LIMIT $QFS
+log_must check_quota "defaultprojectquota" $QFS "$PQUOTA_LIMIT"
+
+log_must zfs set defaultprojectobjquota=$PQUOTA_OBJLIMIT $QFS
+log_must check_quota "defaultprojectobjquota" $QFS "$PQUOTA_OBJLIMIT"
+
+log_must zfs snapshot $snap_fs
+
+log_note "check the snapshot $snap_fs defaultproject{obj}quota"
+log_must check_quota "defaultprojectquota" $snap_fs "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $snap_fs "$PQUOTA_OBJLIMIT"
+
+log_note  "set defaultproject{obj}quota to $snap_fs which will fail"
+log_mustnot zfs set defaultprojectquota=100m $snap_fs
+log_mustnot zfs set defaultprojectobjquota=100 $snap_fs
+
+log_note "change the parent's project{obj}quota"
+log_must zfs set defaultprojectquota=$((PQUOTA_LIMIT * 2)) $QFS
+log_must zfs set defaultprojectobjquota=50 $QFS
+
+log_must check_quota "defaultprojectquota" $QFS $((PQUOTA_LIMIT * 2))
+log_must check_quota "defaultprojectobjquota" $QFS 50
+
+log_note "check the snapshot $snap_fs defaultproject{obj}quota"
+log_must check_quota "defaultprojectquota" $snap_fs "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $snap_fs "$PQUOTA_OBJLIMIT"
+
+log_pass "Check the snapshot's defaultproject{obj}quota"
diff --git a/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_007_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_007_pos.ksh
new file mode 100755
index 000000000..970018444
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/defaultprojectquota_007_pos.ksh
@@ -0,0 +1,129 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	The defaultproject{obj}quota will not change during zfs actions, such as
+#	snapshot,clone,rename,upgrade,send,receive.
+#
+#
+# STRATEGY:
+#	1. Create a pool, and create fs with preset defaultproject{obj}quota
+#	2. Check set defaultproject{obj}quota via zfs snapshot|clone|list -o
+#	3. Check the defaultproject{obj}quota can not change during zfs
+#	   rename|upgrade|promote
+#	4. Check the defaultproject{obj}quota can not change during zfs clone
+#	5. Check the defaultproject{obj}quota can not change during zfs send/receive
+#
+
+function cleanup
+{
+	for ds in $TESTPOOL/fs $TESTPOOL/fs-rename $TESTPOOL/fs-clone; do
+		datasetexists $ds && destroy_dataset $ds -rRf
+	done
+}
+
+log_onexit cleanup
+
+log_assert "the defaultproject{obj}quota can't change during zfs actions"
+
+cleanup
+
+log_must zfs create -o defaultprojectquota=$PQUOTA_LIMIT \
+	-o defaultprojectobjquota=$PQUOTA_OBJLIMIT $TESTPOOL/fs
+
+log_must zfs snapshot $TESTPOOL/fs@snap
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL >/dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL/fs@snap "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL/fs@snap \
+	"$PQUOTA_OBJLIMIT"
+
+
+log_note "clone fs gets its parent's defaultproject{obj}quota initially"
+log_must zfs clone  -o defaultprojectquota=$PQUOTA_LIMIT \
+		-o defaultprojectobjquota=$PQUOTA_OBJLIMIT \
+		$TESTPOOL/fs@snap $TESTPOOL/fs-clone
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL >/dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL/fs-clone "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL/fs-clone \
+	"$PQUOTA_OBJLIMIT"
+
+log_must eval "zfs list -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL/fs-clone >/dev/null 2>&1"
+
+log_note "zfs promote can not change the previously set defaultproject{obj}quota"
+log_must zfs promote $TESTPOOL/fs-clone
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL >/dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL/fs-clone "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL/fs-clone \
+	"$PQUOTA_OBJLIMIT"
+
+log_note "zfs send receive can not change the previously set defaultproject{obj}quota"
+log_must zfs send $TESTPOOL/fs-clone@snap | zfs receive $TESTPOOL/fs-rev
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL >/dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL/fs-rev "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL/fs-rev \
+	"$PQUOTA_OBJLIMIT"
+
+log_note "zfs rename can not change the previously set defaultproject{obj}quota"
+log_must zfs rename $TESTPOOL/fs-rev $TESTPOOL/fs-rename
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL  >/dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL/fs-rename "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL/fs-rename \
+	"$PQUOTA_OBJLIMIT"
+
+log_note "zfs upgrade can not change the previously set defaultproject{obj}quota"
+log_must zfs upgrade $TESTPOOL/fs-rename
+
+log_must eval "zfs list -r -o defaultprojectquota,defaultprojectobjquota \
+	$TESTPOOL >/dev/null 2>&1"
+
+log_must check_quota "defaultprojectquota" $TESTPOOL/fs-rename "$PQUOTA_LIMIT"
+log_must check_quota "defaultprojectobjquota" $TESTPOOL/fs-rename \
+	"$PQUOTA_OBJLIMIT"
+
+log_pass "the defaultproject{obj}quota can't change during zfs actions"
diff --git a/tests/zfs-tests/tests/functional/projectquota/projectquota_007_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/projectquota_007_pos.ksh
index a12893e25..e3711229c 100755
--- a/tests/zfs-tests/tests/functional/projectquota/projectquota_007_pos.ksh
+++ b/tests/zfs-tests/tests/functional/projectquota/projectquota_007_pos.ksh
@@ -53,7 +53,7 @@ log_assert "Check zfs get all will not print out project{obj}quota"
 log_must zfs set projectquota@$PRJID1=50m $QFS
 log_must zfs set projectobjquota@$PRJID2=100 $QFS
 
-log_mustnot eval "zfs get all $QFS | grep projectquota"
-log_mustnot eval "zfs get all $QFS | grep projectobjquota"
+log_mustnot eval "zfs get all $QFS | grep -w projectquota"
+log_mustnot eval "zfs get all $QFS | grep -w projectobjquota"
 
 log_pass "zfs get all will not print out project{obj}quota"
diff --git a/tests/zfs-tests/tests/functional/projectquota/projectquota_common.kshlib b/tests/zfs-tests/tests/functional/projectquota/projectquota_common.kshlib
index 9a77dfddb..7776c8f40 100644
--- a/tests/zfs-tests/tests/functional/projectquota/projectquota_common.kshlib
+++ b/tests/zfs-tests/tests/functional/projectquota/projectquota_common.kshlib
@@ -44,6 +44,8 @@ function cleanup_projectquota
 		log_must zfs set projectobjquota@$PRJID1=none $QFS
 		log_must zfs set projectquota@$PRJID2=none $QFS
 		log_must zfs set projectobjquota@$PRJID2=none $QFS
+		log_must zfs set defaultprojectquota=none $QFS
+		log_must zfs set defaultprojectobjquota=none $QFS
 		log_must chmod 0755 $mntp
 	fi
 
diff --git a/tests/zfs-tests/tests/functional/projectquota/projectspace_005_pos.ksh b/tests/zfs-tests/tests/functional/projectquota/projectspace_005_pos.ksh
new file mode 100755
index 000000000..e22fbf7a9
--- /dev/null
+++ b/tests/zfs-tests/tests/functional/projectquota/projectspace_005_pos.ksh
@@ -0,0 +1,83 @@
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2017 by Fan Yong. All rights reserved.
+#
+
+. $STF_SUITE/tests/functional/projectquota/projectquota_common.kshlib
+
+#
+# DESCRIPTION:
+#	Check the project used size and quota in zfs projectspace
+#
+#
+# STRATEGY:
+#	1. set zfs defaultprojectquota to a fs
+#	2. write some data to the fs with specified project and size
+#	3. use zfs projectspace to check the used size and quota size
+#
+
+function cleanup
+{
+	datasetexists $snapfs && destroy_dataset $snapfs
+
+	log_must cleanup_projectquota
+}
+
+if ! lsattr -pd > /dev/null 2>&1; then
+	log_unsupported "Current e2fsprogs does not support set/show project ID"
+fi
+
+log_onexit cleanup
+
+log_assert "Check the zfs projectspace used and quota"
+
+log_must zfs set defaultprojectquota=100m $QFS
+
+mkmount_writable $QFS
+log_must user_run $PUSER mkdir $PRJDIR
+log_must chattr +P -p $PRJID1 $PRJDIR
+log_must user_run $PUSER mkfile 50m $PRJDIR/qf
+sync_all_pools
+
+typeset snapfs=$QFS@snap
+
+log_must zfs snapshot $snapfs
+
+log_must eval "zfs projectspace $QFS >/dev/null 2>&1"
+log_must eval "zfs projectspace $snapfs >/dev/null 2>&1"
+
+for fs in "$QFS" "$snapfs"; do
+	log_note "check the quota size in zfs projectspace $fs"
+	log_must eval "zfs projectspace $fs | grep $PRJID1 | grep 100M"
+
+	log_note "check the project used size in zfs projectspace $fs"
+	log_must eval "zfs projectspace $fs | grep $PRJID1 | grep 50\\.\*M"
+done
+
+log_pass "Check the zfs projectspace used and quota"