ZTS: clean_mirror and scrub_mirror cleanup

Remove the dependency on partitionable devices for the clean_mirror
and scrub_mirror test cases.  This allows for the setup and cleanup
of the test cases to be simplified by removing the need for complex
partitioning.

This change also resolves a issue where the clean_mirror devices
were not being properly damaged since the device name was not a
full path.  The result being loopX files were being left in the
top level test_results directory.

Signed-off-by: Brian Behlendorf <[email protected]>
Closes #7434 
Closes #7690 

13 files changed, 32 insertions, 228 deletions

diff --git a/tests/test-runner/bin/zts-report.py b/tests/test-runner/bin/zts-report.py
index fef9b53ec..20afad5d7 100755
--- a/tests/test-runner/bin/zts-report.py
+++ b/tests/test-runner/bin/zts-report.py
@@ -202,7 +202,6 @@ maybe = {
     'cache/setup': ['SKIP', disk_reason],
     'cache/cache_010_neg': ['FAIL', known_reason],
     'chattr/setup': ['SKIP', exec_reason],
-    'clean_mirror/setup': ['SKIP', disk_reason],
     'cli_root/zdb/zdb_006_pos': ['FAIL', known_reason],
     'cli_root/zfs_get/zfs_get_004_pos': ['FAIL', known_reason],
     'cli_root/zfs_get/zfs_get_009_pos': ['SKIP', '5479'],
@@ -251,7 +250,6 @@ maybe = {
     'rsend/rsend_021_pos': ['FAIL', '6446'],
     'rsend/rsend_024_pos': ['FAIL', '5665'],
     'rsend/send-c_volume': ['FAIL', '6087'],
-    'scrub_mirror/setup': ['SKIP', disk_reason],
     'snapshot/clone_001_pos': ['FAIL', known_reason],
     'snapused/snapused_004_pos': ['FAIL', '5513'],
     'tmpfile/setup': ['SKIP', tmpfile_reason],
diff --git a/tests/zfs-tests/tests/functional/clean_mirror/clean_mirror_common.kshlib b/tests/zfs-tests/tests/functional/clean_mirror/clean_mirror_common.kshlib
index 3d371e614..cf1d77d9c 100644
--- a/tests/zfs-tests/tests/functional/clean_mirror/clean_mirror_common.kshlib
+++ b/tests/zfs-tests/tests/functional/clean_mirror/clean_mirror_common.kshlib
@@ -32,12 +32,6 @@
 . $STF_SUITE/include/libtest.shlib
 . $STF_SUITE/tests/functional/clean_mirror/default.cfg
 
-# Most of the code related to the clearing of mirrors is duplicated in all
-# the test cases below this directory, barring a few minor changes
-# involving the device to be affected and the 'object' to use to mangle
-# the contents of the mirror.
-# This code is sourced into each of these test cases.
-
 function overwrite_verify_mirror
 {
 	typeset AFFECTED_DEVICE=$1
@@ -56,7 +50,7 @@ function overwrite_verify_mirror
 		(( atfile = atfile + 1 ))
 	done
 
-	# dd the primary side of the mirror
+	# dd the affected side of the mirror
 	log_must dd if=$OVERWRITING_DEVICE of=$AFFECTED_DEVICE \
 		seek=8 bs=$DD_BLOCK count=$(( DD_COUNT - 128 )) conv=notrunc
 
@@ -66,7 +60,7 @@ function overwrite_verify_mirror
 	# Flush out the cache so that we ensure we're reading from disk.
 	#
 	log_must zpool export $TESTPOOL
-	log_must zpool import $TESTPOOL
+	log_must zpool import -d $SIDE_DIR $TESTPOOL
 
 	typeset -i failedcount=0
 	while (( atfile < FILE_COUNT )); do
@@ -84,5 +78,6 @@ function overwrite_verify_mirror
 		    "have the same checksum before and after."
 	fi
 
-	sync_pool $TESTPOOL
+	log_must zpool scrub $TESTPOOL
+	log_must wait_scrubbed $TESTPOOL
 }
diff --git a/tests/zfs-tests/tests/functional/clean_mirror/cleanup.ksh b/tests/zfs-tests/tests/functional/clean_mirror/cleanup.ksh
index fb0db312e..d5614bef0 100755
--- a/tests/zfs-tests/tests/functional/clean_mirror/cleanup.ksh
+++ b/tests/zfs-tests/tests/functional/clean_mirror/cleanup.ksh
@@ -34,22 +34,8 @@
 
 verify_runnable "global"
 
-df -F zfs -h | grep "$TESTFS " >/dev/null
-[[ $? == 0 ]] && log_must zfs umount -f $TESTDIR
 destroy_pool $TESTPOOL
-
-if ( is_mpath_device $MIRROR_PRIMARY || is_loop_device $MIRROR_SECONDARY); then
-	parted $DEV_DSKDIR/$MIRROR_PRIMARY -s rm 1
-fi
-if ( is_mpath_device $MIRROR_SECONDARY || is_loop_device $MIRROR_SECONDARY); then
-	parted $DEV_DSKDIR/$MIRROR_SECONDARY -s rm 1
-fi
-# recreate and destroy a zpool over the disks to restore the partitions to
-# normal
-if [[ -n $SINGLE_DISK ]]; then
-	log_must cleanup_devices $MIRROR_PRIMARY
-else
-	log_must cleanup_devices $MIRROR_PRIMARY $MIRROR_SECONDARY
-fi
+log_must rm -f $SIDE_PRIMARY $SIDE_SECONDARY
+log_must rmdir $SIDE_DIR
 
 log_pass
diff --git a/tests/zfs-tests/tests/functional/clean_mirror/default.cfg b/tests/zfs-tests/tests/functional/clean_mirror/default.cfg
index d02d2b8bd..dfe7f1d0b 100644
--- a/tests/zfs-tests/tests/functional/clean_mirror/default.cfg
+++ b/tests/zfs-tests/tests/functional/clean_mirror/default.cfg
@@ -28,80 +28,10 @@
 # Copyright (c) 2013 by Delphix. All rights reserved.
 #
 
-. $STF_SUITE/include/libtest.shlib
-
-typeset -i NUMBER_OF_DISKS=0
-for i in $DISKS; do
-	[[ -n $MIRROR_PRIMARY ]] && MIRROR_SECONDARY=$i
-	[[ -z $MIRROR_PRIMARY ]] && MIRROR_PRIMARY=$i
-done
-
-if [[ -z $MIRROR_SECONDARY ]]; then
-	# We need to repartition the single disk to two slices
-	SINGLE_DISK=$MIRROR_PRIMARY
-	MIRROR_SECONDARY=$MIRROR_PRIMARY
-	SIDE_PRIMARY_PART=0
-	SIDE_SECONDARY_PART=1
-
-	if is_linux; then
-		if is_mpath_device $SINGLE_DISK; then
-			export DEV_DSKDIR=$DEV_MPATHDIR
-		else
-			export DEV_DSKDIR=$DEV_RDSKDIR
-		fi
-		if ( is_mpath_device $SINGLE_DISK ) && [[ -z $(echo $SINGLE_DISK | awk 'substr($1,18,1)\
-		    ~ /^[[:digit:]]+$/') ]] || ( is_real_device $SINGLE_DISK ); then
-			SIDE_PRIMARY=${SINGLE_DISK}1
-			SIDE_SECONDARY=${SINGLE_DISK}2
-		elif ( is_mpath_device $SINGLE_DISK || is_loop_device $SINGLE_DISK ); then
-			SIDE_PRIMARY=${SINGLE_DISK}p1
-			SIDE_SECONDARY=${SINGLE_DISK}p2
-		else
-			log_fail "$SINGLE_DISK not supported for partitioning."
-		fi
-	else
-		export DEV_DSKDIR="/dev"
-		SIDE_PRIMARY=${SINGLE_DISK}s${SIDE_PRIMARY_PART}
-		SIDE_SECONDARY=${SINGLE_DISK}s${SIDE_SECONDARY_PART}
-	fi
-else
-	SIDE_PRIMARY_PART=0
-	SIDE_SECONDARY_PART=0
-	if is_linux; then
-		if is_mpath_device $MIRROR_PRIMARY; then
-			export DEV_DSKDIR=$DEV_MPATHDIR
-		else
-			export DEV_DSKDIR=$DEV_RDSKDIR
-		fi
-		if ( is_mpath_device $MIRROR_PRIMARY ) && [[ -z $(echo $MIRROR_PRIMARY | awk 'substr($1,18,1)\
-		    ~ /^[[:digit:]]+$/') ]] || ( is_real_device $MIRROR_PRIMARY ); then
-			SIDE_PRIMARY=${MIRROR_PRIMARY}1
-		elif ( is_mpath_device $MIRROR_PRIMARY || is_loop_device $MIRROR_PRIMARY ); then
-			SIDE_PRIMARY=${MIRROR_PRIMARY}p1
-		else
-			log_fail "$MIRROR_PRIMARY not supported for partitioning."
-		fi
-		if ( is_mpath_device $MIRROR_SECONDARY ) && [[ -z $(echo $MIRROR_SECONDARY | awk 'substr($1,18,1)\
-		    ~ /^[[:digit:]]+$/') ]] || ( is_real_device $MIRROR_SECONDARY ); then
-			SIDE_SECONDARY=${MIRROR_SECONDARY}1
-		elif ( is_mpath_device $MIRROR_SECONDARY || is_loop_device $MIRROR_SECONDARY ); then
-			SIDE_SECONDARY=${MIRROR_SECONDARY}p1
-		else
-			log_fail "$MIRROR_SECONDARY not supported for partitioning."
-		fi
-
-	else
-		export DEV_DSKDIR="/dev"
-		SIDE_PRIMARY=${MIRROR_PRIMARY}s${SIDE_PRIMARY_PART}
-		SIDE_SECONDARY=${MIRROR_SECONDARY}s${SIDE_SECONDARY_PART}
-	fi
-fi
-
-export MIRROR_PRIMARY MIRROR_SECONDARY SINGLE_DISK SIDE_PRIMARY SIDE_SECONDARY
-
+export SIDE_DIR="${TEST_BASE_DIR}/clean_mirror"
+export SIDE_PRIMARY="${SIDE_DIR}/dev1"
+export SIDE_SECONDARY="${SIDE_DIR}/dev2"
 export FILE_COUNT=10
 export FILE_SIZE=$(( 1024 * 1024 ))
-export MIRROR_MEGS=100
-export MIRROR_SIZE=${MIRROR_MEGS}m # default mirror size
 export DD_BLOCK=$(( 64 * 1024 ))
-export DD_COUNT=$(( MIRROR_MEGS * 1024 * 1024 / DD_BLOCK ))
+export DD_COUNT=$(( MINVDEVSIZE / DD_BLOCK ))
diff --git a/tests/zfs-tests/tests/functional/clean_mirror/setup.ksh b/tests/zfs-tests/tests/functional/clean_mirror/setup.ksh
index 2d17bf9cb..0024f284d 100755
--- a/tests/zfs-tests/tests/functional/clean_mirror/setup.ksh
+++ b/tests/zfs-tests/tests/functional/clean_mirror/setup.ksh
@@ -34,19 +34,8 @@
 
 verify_runnable "global"
 
-if ! is_physical_device $DISKS; then
-	log_unsupported "This directory cannot be run on raw files."
-fi
-
-if [[ -n $SINGLE_DISK ]]; then
-	log_note "Partitioning a single disk ($SINGLE_DISK)"
-else
-	log_note "Partitioning disks ($MIRROR_PRIMARY $MIRROR_SECONDARY)"
-fi
-
-log_must set_partition $SIDE_PRIMARY_PART "" $MIRROR_SIZE $MIRROR_PRIMARY
-log_must set_partition $SIDE_SECONDARY_PART "" $MIRROR_SIZE $MIRROR_SECONDARY
-
+log_must mkdir -p $SIDE_DIR
+log_must truncate -s $MINVDEVSIZE $SIDE_PRIMARY $SIDE_SECONDARY
 default_mirror_setup $SIDE_PRIMARY $SIDE_SECONDARY
 
 log_pass
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/cleanup.ksh b/tests/zfs-tests/tests/functional/scrub_mirror/cleanup.ksh
index 562de7de1..92e58996a 100755
--- a/tests/zfs-tests/tests/functional/scrub_mirror/cleanup.ksh
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/cleanup.ksh
@@ -35,21 +35,8 @@
 
 verify_runnable "global"
 
-df -F zfs -h | grep "$TESTFS " >/dev/null
-[[ $? == 0 ]] && log_must zfs umount -f $TESTDIR
 destroy_pool $TESTPOOL
-
-DISK=${DISKS%% *}
-if is_mpath_device $DISK; then
-	delete_partitions
-fi
-
-# recreate and destroy a zpool over the disks to restore the partitions to
-# normal
-if [[ -n $SINGLE_DISK ]]; then
-	log_must cleanup_devices $MIRROR_PRIMARY
-else
-	log_must cleanup_devices $MIRROR_PRIMARY $MIRROR_SECONDARY
-fi
+log_must rm -f $SIDE_PRIMARY $SIDE_SECONDARY
+log_must rmdir $SIDE_DIR
 
 log_pass
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/default.cfg b/tests/zfs-tests/tests/functional/scrub_mirror/default.cfg
index 15de76296..01c90e58f 100644
--- a/tests/zfs-tests/tests/functional/scrub_mirror/default.cfg
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/default.cfg
@@ -28,80 +28,10 @@
 # Copyright (c) 2013 by Delphix. All rights reserved.
 #
 
-export DISKSARRAY=$DISKS
-export DISK_ARRAY_NUM=$(echo ${DISKS} | nawk '{print NF}')
-
-typeset -i NUMBER_OF_DISKS=0
-for i in $DISKS; do
-	[[ -n $MIRROR_PRIMARY ]] && MIRROR_SECONDARY=$i
-	[[ -z $MIRROR_PRIMARY ]] && MIRROR_PRIMARY=$i
-done
-
-if [[ -z $MIRROR_SECONDARY ]]; then
-	# We need to repartition the single disk to two slices
-	SINGLE_DISK=$MIRROR_PRIMARY
-	MIRROR_SECONDARY=$MIRROR_PRIMARY
-	SIDE_PRIMARY_PART=0
-	SIDE_SECONDARY_PART=1
-	if is_linux; then
-		if is_mpath_device $MIRROR_PRIMARY; then
-			export DEV_DSKDIR=$DEV_MPATHDIR
-		else
-			export DEV_DSKDIR=$DEV_RDSKDIR
-		fi
-		if ( is_mpath_device $SINGLE_DISK ) && [[ -z $(echo $SINGLE_DISK | awk 'substr($1,18,1)\
-		    ~ /^[[:digit:]]+$/') ]] || ( is_real_device $SINGLE_DISK ); then
-			SIDE_PRIMARY=${SINGLE_DISK}1
-			SIDE_SECONDARY=${SINGLE_DISK}2
-		elif ( is_mpath_device $SINGLE_DISK || is_loop_device $SINGLE_DISK ); then
-			SIDE_PRIMARY=${SINGLE_DISK}p1
-			SIDE_SECONDARY=${SINGLE_DISK}p2
-		else
-			log_fail "$SINGLE_DISK not supported for partitioning."
-		fi
-	else
-		export DEV_DSKDIR="/dev"
-		SIDE_PRIMARY=${SINGLE_DISK}s${SIDE_PRIMARY_PART}
-		SIDE_SECONDARY=${SINGLE_DISK}s${SIDE_SECONDARY_PART}
-	fi
-else
-	SIDE_PRIMARY_PART=0
-	SIDE_SECONDARY_PART=0
-	if is_linux; then
-		if is_mpath_device $MIRROR_PRIMARY; then
-			export DEV_DSKDIR=$DEV_MPATHDIR
-		else
-			export DEV_DSKDIR=$DEV_RDSKDIR
-		fi
-		if ( is_mpath_device $MIRROR_PRIMARY ) && [[ -z $(echo $MIRROR_PRIMARY | awk 'substr($1,18,1)\
-		    ~ /^[[:digit:]]+$/') ]] || ( is_real_device $MIRROR_PRIMARY ); then
-			SIDE_PRIMARY=${MIRROR_PRIMARY}1
-		elif ( is_mpath_device $MIRROR_PRIMARY || is_loop_device $MIRROR_PRIMARY ); then
-			SIDE_PRIMARY=${MIRROR_PRIMARY}p1
-		else
-			log_fail "$MIRROR_PRIMARY not supported for partitioning."
-		fi
-		if ( is_mpath_device $MIRROR_SECONDARY ) && [[ -z $(echo $MIRROR_SECONDARY | awk 'substr($1,18,1)\
-		    ~ /^[[:digit:]]+$/') ]] || ( is_real_device $MIRROR_SECONDARY ); then
-			SIDE_SECONDARY=${MIRROR_SECONDARY}1
-		elif ( is_mpath_device $MIRROR_SECONDARY || is_loop_device $MIRROR_SECONDARY ); then
-			SIDE_SECONDARY=${MIRROR_SECONDARY}p1
-		else
-			log_fail "$MIRROR_SECONDARY not supported for partitioning."
-		fi
-	else
-		export DEV_DSKDIR="/dev"
-		SIDE_PRIMARY=${MIRROR_PRIMARY}s${SIDE_PRIMARY_PART}
-		SIDE_SECONDARY=${MIRROR_SECONDARY}s${SIDE_SECONDARY_PART}
-	fi
-fi
-
-
-export MIRROR_PRIMARY MIRROR_SECONDARY SINGLE_DISK SIDE_PRIMARY SIDE_SECONDARY
-
+export SIDE_DIR="${TEST_BASE_DIR}/scrub_mirror"
+export SIDE_PRIMARY="${SIDE_DIR}/dev1"
+export SIDE_SECONDARY="${SIDE_DIR}/dev2"
 export FILE_COUNT=10
 export FILE_SIZE=$(( 1024 * 1024 ))
-export MIRROR_MEGS=100
-export MIRROR_SIZE=${MIRROR_MEGS}m # default mirror size
 export DD_BLOCK=$(( 64 * 1024 ))
-export DD_COUNT=$(( MIRROR_MEGS * 1024 * 1024 / DD_BLOCK ))
+export DD_COUNT=$(( MINVDEVSIZE / DD_BLOCK ))
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_001_pos.ksh b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_001_pos.ksh
index 841d8ab2e..cce597372 100755
--- a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_001_pos.ksh
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_001_pos.ksh
@@ -48,6 +48,6 @@ verify_runnable "global"
 log_assert "The primary side of a zpool mirror may be completely wiped" \
 	"without affecting the content of the pool"
 
-overwrite_verify_mirror $TESTPOOL $SIDE_PRIMARY /dev/zero
+overwrite_verify_mirror $SIDE_PRIMARY /dev/zero
 
 log_pass "The overwrite had no effect on the data"
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_002_pos.ksh b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_002_pos.ksh
index 92cabd66c..d1fb9d2f1 100755
--- a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_002_pos.ksh
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_002_pos.ksh
@@ -48,6 +48,6 @@ verify_runnable "global"
 log_assert "The primary side of a zpool mirror may be completely wiped" \
 	"without affecting the content of the pool"
 
-overwrite_verify_mirror $TESTPOOL $SIDE_SECONDARY /dev/zero
+overwrite_verify_mirror $SIDE_SECONDARY /dev/zero
 
 log_pass "The overwrite had no effect on the data"
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_003_pos.ksh b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_003_pos.ksh
index ecb422977..fa6c3c2f5 100755
--- a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_003_pos.ksh
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_003_pos.ksh
@@ -48,6 +48,6 @@ verify_runnable "global"
 log_assert "The primary side of a zpool mirror may be completely mangled" \
 	"without affecting the content of the pool"
 
-overwrite_verify_mirror $TESTPOOL $SIDE_PRIMARY /dev/urandom
+overwrite_verify_mirror $SIDE_PRIMARY /dev/urandom
 
 log_pass "The overwrite did not have any effect on the data"
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_004_pos.ksh b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_004_pos.ksh
index b86338095..3139b047b 100755
--- a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_004_pos.ksh
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_004_pos.ksh
@@ -48,6 +48,6 @@ verify_runnable "global"
 log_assert "The primary side of a zpool mirror may be completely mangled" \
 	"without affecting the content of the pool"
 
-overwrite_verify_mirror $TESTPOOL $SIDE_SECONDARY /dev/urandom
+overwrite_verify_mirror $SIDE_SECONDARY /dev/urandom
 
 log_pass "The overwrite had no effect on the data"
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_common.kshlib b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_common.kshlib
index 75c9c5840..4e434ae0b 100644
--- a/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_common.kshlib
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/scrub_mirror_common.kshlib
@@ -27,13 +27,14 @@
 #
 # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
 #
+
+. $STF_SUITE/include/libtest.shlib
 . $STF_SUITE/tests/functional/scrub_mirror/default.cfg
 
 function overwrite_verify_mirror
 {
-	typeset POOL=$1
-	typeset AFFECTED_DEVICE=$2
-	typeset OVERWRITING_DEVICE=$3
+	typeset AFFECTED_DEVICE=$1
+	typeset OVERWRITING_DEVICE=$2
 
 	typeset atfile=0
 	set -A files
@@ -49,14 +50,11 @@ function overwrite_verify_mirror
 	done
 
 	# dd the affected side of the mirror
-	log_must dd if=$OVERWRITING_DEVICE of=${DEV_DSKDIR}/$AFFECTED_DEVICE \
+	log_must dd if=$OVERWRITING_DEVICE of=$AFFECTED_DEVICE \
 		seek=8 bs=$DD_BLOCK count=$(( DD_COUNT - 128 )) conv=notrunc
 
-	log_must zpool scrub $POOL
-
-	while is_pool_scrubbing $POOL; do
-		sleep 2
-	done
+	log_must zpool scrub $TESTPOOL
+	log_must wait_scrubbed $TESTPOOL
 
 	atfile=0
 
diff --git a/tests/zfs-tests/tests/functional/scrub_mirror/setup.ksh b/tests/zfs-tests/tests/functional/scrub_mirror/setup.ksh
index 97a70d815..94b995db5 100755
--- a/tests/zfs-tests/tests/functional/scrub_mirror/setup.ksh
+++ b/tests/zfs-tests/tests/functional/scrub_mirror/setup.ksh
@@ -29,22 +29,13 @@
 # Copyright (c) 2013 by Delphix. All rights reserved.
 #
 
-. $STF_SUITE/include/libtest.shlib
 . $STF_SUITE/tests/functional/scrub_mirror/default.cfg
+. $STF_SUITE/include/libtest.shlib
 
 verify_runnable "global"
 
-if ! $(is_physical_device $DISKS) ; then
-	log_unsupported "This directory cannot be run on raw files."
-fi
-
-if [[ -n $SINGLE_DISK ]]; then
-	log_note "Partitioning a single disk ($SINGLE_DISK)"
-else
-	log_note "Partitioning disks ($MIRROR_PRIMARY $MIRROR_SECONDARY)"
-fi
-log_must set_partition $SIDE_PRIMARY_PART "" $MIRROR_SIZE $MIRROR_PRIMARY
-log_must set_partition $SIDE_SECONDARY_PART "" $MIRROR_SIZE $MIRROR_SECONDARY
+log_must mkdir -p $SIDE_DIR
+log_must truncate -s $MINVDEVSIZE $SIDE_PRIMARY $SIDE_SECONDARY
 
 default_mirror_setup $SIDE_PRIMARY $SIDE_SECONDARY