#echo 'checkpoint;DROP DATABASE IF EXISTS^Cest;CREATE DATABASE test TEMPLATE crashtemplate;checkpoint;'|echo psql  -h /tmp -p 5433 postgres;echo sudo dmsetup suspend --nolockfs  --noflush teststop;echo sudo dmsetup remove -f teststop
psql  -h /tmp -p 5433 postgres <<EOF
CHECKPOINT;
DROP DATABASE IF EXISTS test;
CREATE DATABASE test TEMPLATE crashtemplate;
CHECKPOINT;
EOF
#Immediately suspend all io without any cache flushes or such
sudo dmsetup suspend --nolockfs  --noflush teststop;
#Replace device by an error device so that the fs can be unmounted timely
sudo dmsetup remove -f teststop