3 # create a raid1, remove a drive, and readd it.
4 # resync should be instant.
5 # Then do some IO first. Resync should still be very fast
8 mdadm -CR $md0 -l1 -n2 -binternal --bitmap-chunk=4 -d1 $dev1 $dev2
11 testdev $md0 1 $mdsize1a 64
24 testdev $md0 1 $mdsize1a 64
27 blockdev --flushbufs $dev1 $dev2
28 cmp --ignore-initial=$[64*512] --bytes=$[$mdsize0*1024] $dev1 $dev2
30 mdadm $md0 -f $dev2; sleep 1
32 if dd if=/dev/zero of=$md0 ; then : ; fi
33 blockdev --flushbufs $md0 # ensure writes have been sent.
37 blockdev --flushbufs $dev1 $dev2
38 cmp --ignore-initial=$[64*512] --bytes=$[$mdsize0*1024] $dev1 $dev2