#
# create a raid1, remove a drive, and readd it.
# resync should be instant.
# Then do some IO first.  Resync should still be very fast
#
bmf=$targetdir/bitmap2
rm -f $bmf
mdadm -B $md0 -l1 -n2 -b$bmf -d1 $dev1 $dev2
check resync
check wait
testdev $md0 1 $size 1
sleep 4

mdadm $md0 -f $dev2
sleep 1
mdadm $md0 -r $dev2
mdadm $md0 --re-add $dev2
check nosync

mdadm $md0 -f $dev2
sleep 1
mdadm $md0 -r $dev2
testdev $md0 1 $size 1
mdadm $md0 --re-add $dev2
check wait
cmp --bytes=$[$mdsize0*1024] $dev1 $dev2

mdadm $md0 -f $dev2; sleep 1
mdadm $md0 -r $dev2
if dd if=/dev/zero of=$md0 ; then : ; fi
blockdev --flushbufs $md0 # make sure writes have been sent
mdadm $md0 --re-add $dev2
check recovery
check wait
# should BLKFLSBUF and then read $dev1/$dev2...
cmp --bytes=$[$mdsize0*1024] $file1 $file2
mdadm -S $md0