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#! /usr/bin/ksh -p
#
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
#
# Copyright 2016 Nexenta Systems, Inc. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# zfs umount should not fail because flushing of DNLC
# uses async implementation of zfs_inactive
#
# STRATEGY:
# 1. Call zfs unmount/mount to be sure DNLC is empty
# 2. Create a lot of files
# 3. Call zfs unmount command
# 4. Make sure the file systems were unmounted
# 5. Mount them back
#
for fs in 1 2 3; do
log_must mounted $TESTDIR.$fs
log_must zfs umount $TESTPOOL/$TESTFS.$fs
log_must unmounted $TESTDIR.$fs
log_must zfs mount $TESTPOOL/$TESTFS.$fs
log_must mounted $TESTDIR.$fs
for fn in $(seq 1 8096); do
log_must dd if=/dev/urandom of=$TESTDIR.$fs/file$fn bs=1024 \
count=1
done
log_must zfs umount $TESTPOOL/$TESTFS.$fs
log_must unmounted $TESTDIR.$fs
log_must zfs mount $TESTPOOL/$TESTFS.$fs
log_must mounted $TESTDIR.$fs
log_must rm -f $TESTDIR.$fs/file*
done
log_pass "All file systems are unmounted"
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