# An array is assembled incompletely. Some disks will
# have later metadata than others.
# The array is then reassembled in the "wrong" order -
# older meta data first.
# This FAILS with mdadm 3.3
. tests/env-ddf-template
tmp=$(mktemp /tmp/mdtest-XXXXXX)
rm -f $tmp /var/tmp/mdmon.log
ret=0

mdadm -CR $container -e ddf -n 4 $dev8 $dev9 $dev10 $dev11
ddf_check container 4

mdadm -CR $member1 -n 4 -l 10 $dev8 $dev10 $dev9 $dev11 -z 10000
mdadm -CR $member0 -n 2 -l 1 $dev8 $dev9 -z 10000

mdadm --wait $member0 || true
mdadm --wait $member1 || true

mke2fs -F $member0
mke2fs -F $member1
sha_0a=$(sha1_sum $member0)
sha_1a=$(sha1_sum $member1)

mdadm -Ss
sleep 1

# Add all devices except those for $member0
mdadm -I $dev10
mdadm -I $dev11

# Start runnable members ($member1) and write
mdadm -IRs || true
e2fsck -fy $member1
sha_1b=$(sha1_sum $member1)

mdadm -Ss
sleep 1

# Seq number should be different now
seq8a=$(mdadm -E $dev8 | sed -n 's/^ *Seq : //p')
seq10a=$(mdadm -E $dev10 | sed -n 's/^ *Seq : //p')

if [ $seq8a -ge $seq10a ]; then
    ret=1
    echo ERROR: sequential number of $dev10 not bigger than $dev8
fi
if [ x$sha_1a = x$sha_1b ]; then
    ret=1
    echo ERROR: sha1sums equal after write
fi

#[ -f /var/tmp/mdmon.log ] && cat /var/tmp/mdmon.log

# Now reassemble
# Note that we add the previously missing disks first.
# $dev10 should have a higher seq number than $dev8
for d in $dev8 $dev9 $dev10 $dev11; do
    mdadm -I $d
done

mdadm -IRs || true
sha_0c=$(sha1_sum $member0)
sha_1c=$(sha1_sum $member1)

mdadm -Ss
sleep 1

seq8c=$(mdadm -E $dev8 | sed -n 's/^ *Seq : //p')
seq10c=$(mdadm -E $dev10 | sed -n 's/^ *Seq : //p')

if [ x$sha_0a != x$sha_0c ]; then
    ret=1
    echo ERROR: sha1sum of $member0 has changed
fi
if [ x$sha_1b != x$sha_1c ]; then
    ret=1
    echo ERROR: sha1sum of $member1 has changed
fi
if [ \( $seq10a -ge $seq10c \) -o \( $seq8c -ne $seq10c \) ]; then
    ret=1
    echo ERROR: sequential numbers are wrong
fi

# Expect consistent state
for d in $dev10 $dev8; do
    mdadm -E $d>$tmp
    for x in 0 1; do
	egrep 'state\['$x'\] : Optimal, Consistent' $tmp || {
	    ret=1
	    echo ERROR: $member0 has unexpected state on $d
	}
    done
    if [ x$(egrep -c 'active/Online$' $tmp) != x4 ]; then
	ret=1
	echo ERROR: unexpected number of online disks on $d
    fi
done

# Now try assembly
if mdadm -A $container $dev8 $dev9 $dev10 $dev11; then
    mdadm -IR $container
    sha_0d=$(sha1_sum $member0)
    sha_1d=$(sha1_sum $member1)
    mdadm -Ss
    sleep 1
    seq8d=$(mdadm -E $dev8 | sed -n 's/^ *Seq : //p')
    seq10d=$(mdadm -E $dev10 | sed -n 's/^ *Seq : //p')
    if [ x$sha_0a != x$sha_0d ]; then
	ret=1
	echo ERROR: sha1sum of $member0 has changed
    fi
    if [ x$sha_1b != x$sha_1d ]; then
	ret=1
	echo ERROR: sha1sum of $member1 has changed
    fi
    if [ \( $seq10a -ge $seq10d \) -o \( $seq8d -ne $seq10d \) ]; then
	ret=1
	echo ERROR: sequential numbers are wrong
    fi
else
    ret=1
    echo ERROR: assembly failed
fi

if [ $ret -ne 0 ]; then
    mdadm -E $dev10
    mdadm -E $dev8
fi
rm -f $tmp /var/tmp/mdmon.log
[ $ret -eq 0 ]