mdadm -CR $md0 -l1 -n2 -binternal --bitmap-chunk=4 -d1 $dev1 $dev2
check resync
check wait
-testdev $md0 1 $mdsize1 1
+testdev $md0 1 $mdsize1a 1
sleep 4
mdadm $md0 -f $dev2
mdadm $md0 -f $dev2
sleep 1
mdadm $md0 -r $dev2
-testdev $md0 1 $mdsize1 1
+testdev $md0 1 $mdsize1a 1
mdadm $md0 -a $dev2
check wait
cmp --ignore-initial=$[16*512] --bytes=$[$mdsize0*1024] $dev1 $dev2