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#!/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 (c) 2017 by Delphix. All rights reserved.
#
. $STF_SUITE/tests/functional/pool_checkpoint/pool_checkpoint.kshlib
#
# DESCRIPTION:
# Ensure that we can expand a device while the pool has a
# checkpoint but in the case of a rewind that device rewinds
# back to its previous size.
#
# STRATEGY:
# 1. Create pool
# 2. Populate it
# 3. Take checkpoint
# 4. Expand the device and modify some data
# (include at least one destructive change)
# 5. Rewind to checkpoint
# 6. Verify that we rewinded successfully and check if the
# device shows up expanded in the vdev list
#
verify_runnable "global"
EXPSZ=2G
setup_nested_pools
log_onexit cleanup_nested_pools
populate_nested_pool
INITSZ=$(zpool list -v | grep "$FILEDISK1" | awk '{print $2}')
log_must zpool checkpoint $NESTEDPOOL
log_must truncate -s $EXPSZ $FILEDISK1
log_must zpool online -e $NESTEDPOOL $FILEDISK1
NEWSZ=$(zpool list -v | grep "$FILEDISK1" | awk '{print $2}')
nested_change_state_after_checkpoint
log_mustnot [ "$INITSZ" = "$NEWSZ" ]
log_must zpool export $NESTEDPOOL
log_must zpool import -d $FILEDISKDIR --rewind-to-checkpoint $NESTEDPOOL
nested_verify_pre_checkpoint_state
FINSZ=$(zpool list -v | grep "$FILEDISK1" | awk '{print $2}')
log_must [ "$INITSZ" = "$FINSZ" ]
log_pass "LUN expansion rewinded correctly."
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