X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ftests%2Fsanity-flr.sh;h=671be8407c3801618ea8d19c4044cb09b69c48f6;hb=bd7a2f9938a7edf09afd133601ca4181e109a7d0;hp=a8b4127004d359e0732c162fef04e53cae8dc639;hpb=84097792f56c38265b6eb0417a47c557f81f9461;p=fs%2Flustre-release.git

diff --git a/lustre/tests/sanity-flr.sh b/lustre/tests/sanity-flr.sh
index a8b4127..671be84 100644
--- a/lustre/tests/sanity-flr.sh
+++ b/lustre/tests/sanity-flr.sh
@@ -15,25 +15,35 @@ init_logging
 
 ALWAYS_EXCEPT="$SANITY_FLR_EXCEPT "
 # Bug number for skipped test:    LU-11381
-ALWAYS_EXCEPT+="                  201"
+ALWAYS_EXCEPT+="                  201 "
 # UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
 
+# skip all tests for PPC until we can get sanity-pfl to pass
+if [[ $(uname -m) = ppc64 ]]; then
+	skip "Skip FLR testing for PPC clients"
+fi
+
+if [[ "$ost1_FSTYPE" == "zfs" ]]; then
+	# bug #:	LU-1941
+	ALWAYS_EXCEPT+="49a"
+fi
+
 build_test_filter
 
 [[ "$MDS1_VERSION" -ge $(version_code 2.10.56) ]] ||
 	skip "Need MDS version at least 2.10.56"
 
-[ $UID -eq 0 -a $RUNAS_ID -eq 0 ] &&
-	error "\$RUNAS_ID set to 0, but \$UID is also 0!"
-check_runas_id $RUNAS_ID $RUNAS_GID $RUNAS
-
 check_and_setup_lustre
 DIR=${DIR:-$MOUNT}
 assert_DIR
-
-assert_DIR
 rm -rf $DIR/[Rdfs][0-9]*
 
+[ $UID -eq 0 -a $RUNAS_ID -eq 0 ] &&
+	error "\$RUNAS_ID set to 0, but \$UID is also 0!"
+
+check_runas_id $RUNAS_ID $RUNAS_GID $RUNAS
+
+
 # global array to store mirror IDs
 declare -a mirror_array
 get_mirror_ids() {
@@ -368,7 +378,6 @@ test_0b() {
 	verify_comp_attr stripe-size $tf ${ids[1]} 4194304
 	verify_comp_attr stripe-count $tf ${ids[1]} 2
 	verify_comp_attr stripe-index $tf ${ids[1]} 2
-	verify_comp_attr pool $tf ${ids[1]} flash
 
 	# verify component ${ids[2]}
 	verify_comp_attr stripe-size $tf ${ids[2]} 16777216
@@ -440,7 +449,6 @@ test_0c() {
 		verify_comp_attr_with_default stripe-size $tf ${ids[$i]}
 		verify_comp_attr stripe-count $tf ${ids[$i]} 2
 		verify_comp_attr stripe-index $tf ${ids[$i]} 1
-		verify_comp_attr pool $tf ${ids[$i]} flash
 		verify_comp_extent $tf ${ids[$i]} 0 4194304
 	done
 
@@ -556,13 +564,11 @@ test_0e() {
 	verify_comp_attr stripe-size $tf ${ids[0]} 33554432
 	verify_comp_attr stripe-count $tf ${ids[0]} 3
 	verify_comp_attr stripe-index $tf ${ids[0]} 1
-	verify_comp_attr pool $tf ${ids[0]} ssd
 
 	# verify component ${ids[1]}
 	verify_comp_attr stripe-size $tf ${ids[1]} 4194304
 	verify_comp_attr stripe-count $tf ${ids[1]} 2
 	verify_comp_attr stripe-index $tf ${ids[1]} 2
-	verify_comp_attr pool $tf ${ids[1]} flash
 
 	# verify component ${ids[2]}
 	verify_comp_attr stripe-size $tf ${ids[2]} 16777216
@@ -603,11 +609,12 @@ test_0f() {
 		error "create mirrored file $tf failed"
 
 	# extend the mirrored file with composite layout mirrors
-	$mirror_cmd -N2 -E 4M -c 2 -p flash -i 1 -o 1,3 -E eof -S 4M \
+	$mirror_cmd -N -p archive \
+		    -N2 -E 4M -c 2 -p flash -i 1 -o 1,3 -E eof -S 4M \
 		    -N -c -1 -p none \
 		    -N3 -E 512M -S 16M -p archive -E -1 -i -1 -c -1 $tf ||
 		error "extend mirrored file $tf failed"
-	verify_mirror_count $tf 7
+	verify_mirror_count $tf 8
 	ids=($($LFS getstripe $tf | awk '/lcme_id/{print $2}' | tr '\n' ' '))
 
 	# verify component ${ids[0]}
@@ -622,39 +629,44 @@ test_0f() {
 	verify_comp_attr pool $tf ${ids[1]} ssd
 	verify_comp_extent $tf ${ids[1]} 33554432 EOF
 
-	# verify components ${ids[2]} and ${ids[4]}
-	for i in 2 4; do
+	# verify component ${ids[2]}
+	verify_comp_attr stripe-size $tf ${ids[0]} 16777216
+	verify_comp_attr_with_default stripe-count $tf ${ids[2]}
+	verify_comp_attr pool $tf ${ids[2]} archive
+	verify_comp_extent $tf ${ids[2]} 0 EOF
+
+	# verify components ${ids[3]} and ${ids[5]}
+	for i in 3 5; do
 		verify_comp_attr_with_default stripe-size $tf ${ids[$i]}
 		verify_comp_attr stripe-count $tf ${ids[$i]} 2
 		verify_comp_attr stripe-index $tf ${ids[$i]} 1
-		verify_comp_attr pool $tf ${ids[$i]} flash
 		verify_comp_extent $tf ${ids[$i]} 0 4194304
 	done
 
-	# verify components ${ids[3]} and ${ids[5]}
-	for i in 3 5; do
+	# verify components ${ids[4]} and ${ids[6]}
+	for i in 4 6; do
 		verify_comp_attr stripe-size $tf ${ids[$i]} 4194304
 		verify_comp_attr stripe-count $tf ${ids[$i]} 2
 		verify_comp_attr pool $tf ${ids[$i]} flash
 		verify_comp_extent $tf ${ids[$i]} 4194304 EOF
 	done
 
-	# verify component ${ids[6]}
-	verify_comp_attr stripe-size $tf ${ids[6]} 4194304
-	verify_comp_attr stripe-count $tf ${ids[6]} $OSTCOUNT
-	verify_comp_attr_with_parent pool $tf ${ids[6]}
-	verify_comp_extent $tf ${ids[6]} 0 EOF
+	# verify component ${ids[7]}
+	verify_comp_attr stripe-size $tf ${ids[7]} 4194304
+	verify_comp_attr stripe-count $tf ${ids[7]} $OSTCOUNT
+	verify_comp_attr_with_parent pool $tf ${ids[7]}
+	verify_comp_extent $tf ${ids[7]} 0 EOF
 
-	# verify components ${ids[7]}, ${ids[9]} and ${ids[11]}
-	for i in 7 9 11; do
+	# verify components ${ids[8]}, ${ids[10]} and ${ids[12]}
+	for i in 8 10 12; do
 		verify_comp_attr stripe-size $tf ${ids[$i]} 16777216
 		verify_comp_attr stripe-count $tf ${ids[$i]} $OSTCOUNT
 		verify_comp_attr pool $tf ${ids[$i]} archive
 		verify_comp_extent $tf ${ids[$i]} 0 536870912
 	done
 
-	# verify components ${ids[8]}, ${ids[10]} and ${ids[12]}
-	for i in 8 10 12; do
+	# verify components ${ids[9]}, ${ids[11]} and ${ids[13]}
+	for i in 9 11 13; do
 		verify_comp_attr stripe-size $tf ${ids[$i]} 16777216
 		verify_comp_attr stripe-count $tf ${ids[$i]} -1
 		verify_comp_attr pool $tf ${ids[$i]} archive
@@ -666,6 +678,21 @@ run_test 0f "lfs mirror extend composite layout mirrors"
 test_0g() {
 	local tf=$DIR/$tfile
 
+	! $LFS mirror create --flags prefer $tf ||
+		error "creating $tf w/ --flags but w/o -N option should fail"
+
+	! $LFS mirror create -N --flags foo $tf ||
+		error "creating $tf with '--flags foo' should fail"
+
+	! $LFS mirror create -N --flags stale $tf ||
+		error "creating $tf with '--flags stale' should fail"
+
+	! $LFS mirror create -N --flags prefer,init $tf ||
+		error "creating $tf with '--flags prefer,init' should fail"
+
+	! $LFS mirror create -N --flags ^prefer $tf ||
+		error "creating $tf with '--flags ^prefer' should fail"
+
 	$LFS mirror create -N -E 1M -S 1M -o0 --flags=prefer -E eof -o1 \
 			   -N -o1 $tf || error "create mirrored file $tf failed"
 
@@ -713,6 +740,12 @@ test_0h() {
 	verify_comp_attr lcme_flags $tf 0x10002 prefer
 
 	# set flags to the first component
+	! $LFS setstripe --comp-set -I 0x10001 --comp-flags=^prefer,foo $tf ||
+		error "setting '^prefer,foo' flags should fail"
+
+	! $LFS getstripe --component-flags=prefer,foo $tf ||
+		error "getting component(s) with 'prefer,foo' flags should fail"
+
 	$LFS setstripe --comp-set -I 0x10001 --comp-flags=^prefer,stale $tf
 
 	verify_comp_attr lcme_flags $tf 0x10001 stale
@@ -762,6 +795,24 @@ test_0h() {
 }
 run_test 0h "set, clear and test flags for FLR files"
 
+test_0j() {
+	$LFS mirror create -N2 $DIR/$tfile || error "create $DIR/$tfile failed"
+
+	cp /etc/hosts $DIR/$tfile || error "write to $DIR/$tfile failed"
+	$LFS mirror resync $DIR/$tfile || error "resync $DIR/$tfile failed"
+	cmp /etc/hosts $DIR/$tfile || error "cmp with /etc/hosts failed"
+
+	$LFS mirror read -N2 -o $TMP/$tfile $DIR/$tfile || "read mirror failed"
+	stack_trap "rm -f $TMP/$tfile"
+	cmp $TMP/$tfile $DIR/$tfile || error "cmp with $TMP/$tfile failed"
+	$LFS mirror write -N2 -i /etc/passwd $DIR/$tfile || "write failed"
+	$LFS setstripe --comp-set -I 65537 --comp-flags=stale $DIR/$tfile ||
+		error "set component 1 stale failed"
+	$LFS mirror resync $DIR/$tfile || error "resync $DIR/$tfile failed"
+	cmp /etc/passwd $DIR/$tfile || error "cmp with /etc/passwd failed"
+}
+run_test 0j "test lfs mirror read/write commands"
+
 test_1() {
 	local tf=$DIR/$tfile
 	local mirror_count=16 # LUSTRE_MIRROR_COUNT_MAX
@@ -1843,7 +1894,7 @@ write_file_43() {
 	[ $flags = wp ] || error "file mirror state $flags != wp"
 }
 
-test_43() {
+test_43a() {
 	[ $OSTCOUNT -lt 3 ] && skip "needs >= 3 OSTs" && return
 
 	local tf=$DIR/$tfile
@@ -1890,7 +1941,28 @@ test_43() {
 	verify_comp_attr lcme_flags $tf 0x20002 init,stale
 	verify_comp_attr lcme_flags $tf 0x30003 init,stale
 }
-run_test 43 "mirror pick on write"
+run_test 43a "mirror pick on write"
+
+test_43b() {
+	local tf=$DIR/$tdir/$tfile
+
+	test_mkdir $DIR/$tdir
+	rm -f $tf
+
+	# create 3 mirrors FLR file, the first 2 mirrors are preferred
+	$LFS setstripe -N -Eeof --flags=prefer -N -Eeof --flags=prefer \
+		-N -Eeof $tf || error "create 3 mirrors file $tf failed"
+	verify_flr_state $tf "ro"
+
+	echo " ** write to $tf"
+	dd if=/dev/zero of=$tf bs=1M count=1 || error "write $tf failed"
+	verify_flr_state $tf "wp"
+
+	echo " ** resync $tf"
+	$LFS mirror resync $tf || error "resync $tf failed"
+	verify_flr_state $tf "ro"
+}
+run_test 43b "allow writing to multiple preferred mirror file"
 
 test_44() {
 	[ $MDSCOUNT -lt 2 ] && skip "needs >= 2 MDTs" && return
@@ -2031,6 +2103,7 @@ test_46() {
 
 	########################### 3. FLR file #############################
 	echo "  ** 3. FLR file"
+	rm -f $file
 	$LFS setstripe -N -E1m -S 1M -c2 -o0,1 -E4m -c1 -Eeof -N -E16m -Eeof \
 		$file || error "3. Create FLR $file failed"
 
@@ -2059,6 +2132,38 @@ test_46() {
 		error "6. setstripe FLR $dir failed"
 
 	verify_46 $dir $dir.copy "6. FLR dir"
+
+	########################### 7. SEL file ##############################
+	echo "  ** 7. SEL file"
+	rm -f $file
+	$LFS setstripe -E256M -S 1M -c2 -o0,1 -z 64M -E-1 -o1,0 -z 128M \
+		$file || error "Create $file failed"
+
+	rm -f $file.copy
+	verify_46 $file $file.copy "7. SEL file"
+
+	########################### 8. SEL dir ##############################
+	echo "  ** 8. SEL dir"
+	$LFS setstripe -E256M -S 1M -c2 -z 64M -E-1 -z 128M \
+		$dir || error "setstripe $dir failed"
+
+	verify_46 $dir $dir.copy "8. SEL dir"
+
+	########################### 9. FLR SEL file ##########################
+	echo "  ** 9. FLR SEL file"
+	rm -f $file
+	$LFS setstripe -N -E256M -c2 -z 64M -E-1 -z 128M \
+		-N -E1G -c4 -z128M -E-1 -z256M $file || error "Create $file failed"
+
+	rm -f $file.copy
+	verify_46 $file $file.copy "9. SEL file"
+
+	########################### 10. FLR SEL dir #########################
+	echo "  ** 10. FLR SEL dir"
+	$LFS setstripe -N -E256M -c2 -z 64M -E-1 -z 128M \
+		-N -E1G -c4 -z128M -E-1 -z256M $dir || error "Create $file failed"
+
+	verify_46 $dir $dir.copy "10. SEL dir"
 }
 run_test 46 "Verify setstripe --copy option"
 
@@ -2197,6 +2302,330 @@ test_48() {
 }
 run_test 48 "Verify snapshot mirror"
 
+OLDIFS="$IFS"
+cleanup_49() {
+	trap 0
+	IFS="$OLDIFS"
+}
+
+test_49a() {
+	[ "$OSTCOUNT" -lt "2" ] && skip_env "needs >= 2 OSTs"
+
+	trap cleanup_49 EXIT RETURN
+
+	local file=$DIR/$tfile
+
+	$LFS setstripe -N -E eof -c1 -o1 -N -E eof -c1 -o0 $file ||
+		error "setstripe on $file"
+
+	dd if=/dev/zero of=$file bs=1M count=1 || error "dd failed for $file"
+	$LFS mirror resync $file
+
+	filefrag -ves $file || error "filefrag $file failed"
+	filefrag_op=$(filefrag -ve -k $file |
+		      sed -n '/ext:/,/found/{/ext:/d; /found/d; p}')
+
+#Filesystem type is: bd00bd0
+#File size of /mnt/lustre/f49a.sanity-flr is 1048576 (1024 blocks of 1024 bytes)
+# ext:     device_logical:        physical_offset: length:  dev: flags:
+#   0:        0..    1023:    1572864..   1573887:   1024: 0001: net,eof
+#   1:        0..    1023:    1572864..   1573887:   1024: 0000: last,net,eof
+#/mnt/lustre/f49a.sanity-flr: 2 extents found
+
+	last_lun=$(echo $filefrag_op | cut -d: -f5)
+	IFS=$'\n'
+	tot_len=0
+	num_luns=1
+	for line in $filefrag_op; do
+		frag_lun=$(echo $line | cut -d: -f5)
+		ext_len=$(echo $line | cut -d: -f4)
+		if [[ "$frag_lun" != "$last_lun" ]]; then
+			if (( tot_len != 1024 )); then
+				cleanup_49
+				error "$file: OST$last_lun $tot_len != 1024"
+			else
+				(( num_luns += 1 ))
+				tot_len=0
+			fi
+		fi
+		(( tot_len += ext_len ))
+		last_lun=$frag_lun
+	done
+	if (( num_luns != 2 || tot_len != 1024 )); then
+		cleanup_49
+		error "$file: $num_luns != 2, $tot_len != 1024 on OST$last_lun"
+	fi
+
+	echo "FIEMAP on $file succeeded"
+}
+run_test 49a "FIEMAP upon FLR file"
+
+test_50A() {	# EX-2179
+	mkdir -p $DIR/$tdir
+
+	local file=$DIR/$tdir/$tfile
+
+	$LFS setstripe -c1 -i0 $file || error "setstripe $file failed"
+
+	$LFS mirror extend -N -c1 -i1 $file ||
+		error "extending mirror for $file failed"
+
+	local olv=$($LFS getstripe $file | awk '/lcm_layout_gen/{print $2}')
+
+	fail mds1
+
+	$LFS mirror split -d --mirror-id=1 $file || error "split $file failed"
+
+	local flv=$($LFS getstripe $file | awk '/lcm_layout_gen/{print $2}')
+
+	echo "$file layout generation from $olv to $flv"
+	(( $flv != ($olv + 1) )) &&
+		error "split does not increase layout gen from $olv to $flv"
+
+	dd if=/dev/zero of=$file bs=1M count=1 || error "write $file failed"
+
+	$LFS getstripe -v $file || error "getstripe $file failed"
+}
+run_test 50A "mirror split update layout generation"
+
+test_50a() {
+	$LCTL get_param osc.*.import | grep -q 'connect_flags:.*seek' ||
+		skip "OST does not support SEEK_HOLE"
+
+	local file=$DIR/$tdir/$tfile
+	local offset
+	local sum1
+	local sum2
+	local blocks
+
+	mkdir -p $DIR/$tdir
+
+	echo " ** create striped file $file"
+	$LFS setstripe -E 1M -c1 -S 1M -E eof -c2 -S1M $file ||
+		error "cannot create file with PFL layout"
+	echo " ** write 1st data chunk at 1M boundary"
+	dd if=/dev/urandom of=$file bs=1k count=20 seek=1021 ||
+		error "cannot write data at 1M boundary"
+	echo " ** write 2nd data chunk at 2M boundary"
+	dd if=/dev/urandom of=$file bs=1k count=20 seek=2041 ||
+		error "cannot write data at 2M boundary"
+	echo " ** create hole at the file end"
+	$TRUNCATE $file 3700000 || error "truncate fails"
+
+	echo " ** verify sparseness"
+	offset=$(lseek_test -d 1000 $file)
+	echo "    first data offset: $offset"
+	[[ $offset == 1000 ]] &&
+		error "src: data is not expected at offset $offset"
+	offset=$(lseek_test -l 3500000 $file)
+	echo "    hole at the end: $offset"
+	[[ $offset == 3500000 ]] ||
+		error "src: hole is expected at offset $offset"
+
+	echo " ** extend the file with new mirror"
+	# migrate_copy_data() is used
+	$LFS mirror extend -N -E 2M -S 1M -E 1G -S 2M -E eof $file ||
+		error "cannot create mirror"
+	$LFS getstripe $file | grep lcme_flags | grep stale > /dev/null &&
+		error "$file still has stale component"
+
+	# check migrate_data_copy() was correct
+	sum_1=$($LFS mirror read -N 1 $file | md5sum)
+	sum_2=$($LFS mirror read -N 2 $file | md5sum)
+	[[ $sum_1 == $sum_2 ]] ||
+		error "data mismatch: \'$sum_1\' vs. \'$sum_2\'"
+
+	# stale first mirror
+	$LFS setstripe --comp-set -I0x10001 --comp-flags=stale $file
+	$LFS setstripe --comp-set -I0x10002 --comp-flags=stale $file
+
+	echo " ** verify mirror #2 sparseness"
+	offset=$(lseek_test -d 1000 $file)
+	echo "    first data offset: $offset"
+	[[ $offset == 1000 ]] &&
+		error "dst: data is not expected at offset $offset"
+	offset=$(lseek_test -l 3500000 $file)
+	echo "    hole at the end: $offset"
+	[[ $offset == 3500000 ]] ||
+		error "dst: hole is expected at offset $offset"
+
+	echo " ** copy mirror #2 to mirror #1"
+	$LFS mirror copy -i 2 -o 1 $file || error "mirror copy fails"
+	$LFS getstripe $file | grep lcme_flags | grep stale > /dev/null &&
+		error "$file still has stale component"
+
+	# check llapi_mirror_copy_many correctness
+	sum_1=$($LFS mirror read -N 1 $file | md5sum)
+	sum_2=$($LFS mirror read -N 2 $file | md5sum)
+	[[ $sum_1 == $sum_2 ]] ||
+		error "data mismatch: \'$sum_1\' vs. \'$sum_2\'"
+
+	# stale 1st component of mirror #2 before lseek call
+	$LFS setstripe --comp-set -I0x20001 --comp-flags=stale $file
+
+	echo " ** verify mirror #1 sparseness again"
+	offset=$(lseek_test -d 1000 $file)
+	echo "    first data offset: $offset"
+	[[ $offset == 1000 ]] &&
+		error "dst: data is not expected at offset $offset"
+	offset=$(lseek_test -l 3500000 $file)
+	echo "    hole at the end: $offset"
+	[[ $offset == 3500000 ]] ||
+		error "dst: hole is expected at offset $offset"
+
+	cancel_lru_locks osc
+
+	blocks=$(stat -c%b $file)
+	echo " ** final consumed blocks: $blocks"
+	# for 3.5Mb file consumes ~6000 blocks, use 1000 to check
+	# that file is still sparse
+	(( blocks < 1000 )) ||
+		error "Mirrored file consumes $blocks blocks"
+
+	rm $file
+}
+run_test 50a "mirror extend/copy preserves sparseness"
+
+test_50b() {
+	$LCTL get_param osc.*.import | grep -q 'connect_flags:.*seek' ||
+		skip "OST does not support SEEK_HOLE"
+
+	local file=$DIR/$tdir/$tfile
+	local offset
+	local sum1
+	local sum2
+	local blocks
+
+	mkdir -p $DIR/$tdir
+
+	echo " ** create mirrored file $file"
+	$LFS mirror create -N -E1M -c1 -S1M -E eof \
+		-N -E2M -S1M -E eof -S2M $file ||
+		error "cannot create mirrored file"
+	echo " ** write data chunk at 1M boundary"
+	dd if=/dev/urandom of=$file bs=1k count=20 seek=1021 ||
+		error "cannot write data at 1M boundary"
+	echo " ** create hole at the file end"
+	$TRUNCATE $file 3700000 || error "truncate fails"
+
+	echo " ** verify sparseness"
+	offset=$(lseek_test -d 1000 $file)
+	echo "    first data offset: $offset"
+	[[ $offset == 1000 ]] &&
+		error "src: data is not expected at offset $offset"
+	offset=$(lseek_test -l 3500000 $file)
+	echo "    hole at the end: $offset"
+	[[ $offset == 3500000 ]] ||
+		error "src: hole is expected at 3500000"
+
+	echo " ** resync mirror #2 to mirror #1"
+	$LFS mirror resync $file
+
+	# check llapi_mirror_copy_many correctness
+	sum_1=$($LFS mirror read -N 1 $file | md5sum)
+	sum_2=$($LFS mirror read -N 2 $file | md5sum)
+	[[ $sum_1 == $sum_2 ]] ||
+		error "data mismatch: \'$sum_1\' vs. \'$sum_2\'"
+
+	cancel_lru_locks osc
+
+	blocks=$(stat -c%b $file)
+	echo " ** consumed blocks: $blocks"
+	# without full punch() support the first component can be not sparse
+	# but the last one should be, so file should use far fewer blocks
+	(( blocks < 5000 )) ||
+		error "Mirrored file consumes $blocks blocks"
+
+	# stale first component in mirror #1
+	$LFS setstripe --comp-set -I0x10001 --comp-flags=stale,nosync $file
+	echo " ** truncate file down"
+	$TRUNCATE $file 0
+	echo " ** write data chunk at 2M boundary"
+	dd if=/dev/urandom of=$file bs=1k count=20 seek=2041 conv=notrunc ||
+		error "cannot write data at 2M boundary"
+	echo " ** resync mirror #2 to mirror #1 with nosync 1st component"
+	$LFS mirror resync $file || error "mirror rsync fails"
+	# first component is still stale
+	$LFS getstripe $file | grep 'lcme_flags:.*stale' > /dev/null ||
+		error "$file still has no stale component"
+	echo " ** resync mirror #2 to mirror #1 again"
+	$LFS setstripe --comp-set -I0x10001 --comp-flags=stale,^nosync $file
+	$LFS mirror resync $file || error "mirror rsync fails"
+	$LFS getstripe $file | grep 'lcme_flags:.*stale' > /dev/null &&
+		error "$file still has stale component"
+
+	# check llapi_mirror_copy_many correctness
+	sum_1=$($LFS mirror read -N 1 $file | md5sum)
+	sum_2=$($LFS mirror read -N 2 $file | md5sum)
+	[[ $sum_1 == $sum_2 ]] ||
+		error "data mismatch: \'$sum_1\' vs. \'$sum_2\'"
+
+	cancel_lru_locks osc
+
+	blocks=$(stat -c%b $file)
+	echo " ** final consumed blocks: $blocks"
+	# while the first component can lose sparseness, the last one should
+	# not, so whole file should still use far fewer blocks in total
+	(( blocks < 3000 )) ||
+		error "Mirrored file consumes $blocks blocks"
+	rm $file
+}
+run_test 50b "mirror rsync handles sparseness"
+
+test_60a() {
+	$LCTL get_param osc.*.import | grep -q 'connect_flags:.*seek' ||
+		skip "OST does not support SEEK_HOLE"
+
+	local file=$DIR/$tdir/$tfile
+	local old_size=2147483648 # 2GiB
+	local new_size
+
+	mkdir -p $DIR/$tdir
+	dd if=/dev/urandom of=$file bs=4096 count=1 seek=$((134217728 / 4096))
+	$TRUNCATE $file $old_size
+
+	$LFS mirror extend -N -c 1 $file
+	dd if=/dev/urandom of=$file bs=4096 count=1 seek=$((134217728 / 4096)) conv=notrunc
+	$LFS mirror resync $file
+
+	new_size=$(stat --format='%s' $file)
+	if ((new_size != old_size)); then
+		error "new_size ($new_size) is not equal to old_size ($old_size)"
+	fi
+
+	rm $file
+}
+run_test 60a "mirror extend sets correct size on sparse file"
+
+test_70() {
+	local tf=$DIR/$tdir/$tfile
+
+	test_mkdir $DIR/$tdir
+
+	while true; do
+		rm -f $tf
+		$LFS mirror create -N -E 1M -c -1 -E eof -N $tf
+		echo xxxx > $tf
+	done &
+	c_pid=$!
+	echo "mirror create pid $c_pid"
+
+	while true; do
+		$LFS mirror split -d --mirror-id=1 $tf &> /dev/null
+	done &
+	s_pid=$!
+	echo "mirror split pid $s_pid"
+
+	echo "mirror create and split race for 60 seconds, should not crash"
+	sleep 60
+	kill -9 $c_pid &> /dev/null
+	kill -9 $s_pid &> /dev/null
+
+	rm -f $tf
+	true
+}
+run_test 70 "mirror create and split race"
+
 ctrl_file=$(mktemp /tmp/CTRL.XXXXXX)
 lock_file=$(mktemp /var/lock/FLR.XXXXXX)
 
@@ -2843,6 +3272,98 @@ test_204f() {
 }
 run_test 204f "FLR write/stale/resync sel w/forced extension"
 
+function test_205() {
+	local tf=$DIR/$tfile
+	local mirrors
+
+	$LFS setstripe -c1 $tf
+	$LFS mirror extend -N $tf
+	mirrors=$($LFS getstripe $tf | grep lcme_mirror_id | wc -l )
+	(( $mirrors == 2 )) || error "no new mirror was created?"
+
+	$LFS mirror extend -N --flags=prefer $tf
+	mirrors=$($LFS getstripe $tf | grep lcme_mirror_id | wc -l )
+	(( $mirrors == 3 )) || error "no new mirror was created?"
+
+	$($LFS getstripe $tf | grep lcme_flags: | tail -1 | grep -q prefer) ||
+		error "prefer flag was not set on the new mirror"
+}
+run_test 205 "lfs mirror extend to set prefer flag"
+
+function test_206() {
+	# create a new OST pool
+	local pool_name=$TESTNAME
+
+	create_pool $FSNAME.$pool_name ||
+		error "create OST pool $pool_name failed"
+	# add OSTs into the pool
+	pool_add_targets $pool_name 0 1 ||
+		error "add OSTs into pool $pool_name failed"
+
+	$LFS setstripe -c1 --pool=$pool_name $DIR/$tfile ||
+		error "can't setstripe"
+	$LFS mirror extend -N $DIR/$tfile ||
+		error "can't create replica"
+	if $LFS getstripe $DIR/$tfile | grep -q prefer ; then
+		$LFS getstripe $DIR/$tfile
+		error "prefer found"
+	fi
+	$LFS setstripe --comp-set --comp-flags=prefer -p $pool_name $DIR/$tfile || {
+		$LFS getstripe $DIR/$tfile
+		error "can't setstripe prefer"
+	}
+
+	if ! $LFS getstripe $DIR/$tfile | grep -q prefer ; then
+		$LFS getstripe $DIR/$tfile
+		error "no prefer found"
+	fi
+
+	# destroy OST pool
+	destroy_test_pools
+}
+run_test 206 "lfs setstripe -pool .. --comp-flags=.. "
+
+test_207() {
+       local file=$DIR/$tfile
+       local tmpfile=$DIR/$tfile-tt
+
+	[ $MDS1_VERSION -lt $(version_code 2.14.50) ] &&
+		skip "Need MDS version at least 2.14.50"
+
+	stack_trap "rm -f $tmpfile $file"
+
+	# generate data for verification
+	dd if=/dev/urandom of=$tmpfile bs=1M count=1 ||
+		error "can't generate file with random data"
+
+	# create a mirrored file with one stale replica
+	$LFS mirror create -N -S 4M -c 2 -N -S 1M -c -1 $file ||
+		error "create mirrored file $file failed"
+	get_mirror_ids $file
+	echo "mirror IDs: ${mirror_array[@]}"
+
+	dd if=$tmpfile of=$file bs=1M || error "can't copy"
+	get_mirror_ids $file
+	echo "mirror IDs: ${mirror_array[@]}"
+
+	drop_client_cache
+	cmp $tmpfile $file || error "files don't match"
+	get_mirror_ids $file
+	echo "mirror IDs: ${mirror_array[@]}"
+
+	# mirror creation should work fine
+	$LFS mirror extend -N -S 8M -c -1 $file ||
+		error "mirror extend $file failed"
+
+	get_mirror_ids $file
+	echo "mirror IDs: ${mirror_array[@]}"
+
+	drop_client_cache
+	$LFS mirror verify -v $file || error "verification failed"
+	cmp $tmpfile $file || error "files don't match"
+}
+run_test 207 "create another replica with existing out-of-sync one"
+
 complete $SECONDS
 check_and_cleanup_lustre
 exit_status