If your system is not configured to get core dumps, you are looking at the correct article (which may help you !!)

To enable core dumps for all daemon, please follow these steps:
Edit the /etc/profile and add this line:
ulimit -c unlimited >/dev/null 2>&1
Make sure the following line is present under /etc/init.d/functions
ulimit -S -c ${DAEMON_COREFILE_LIMIT:-0} >/dev/null 2>&1
File /etc/sysconfig/init (or) /etc/sysconfig/$daemon should have following line:
DAEMON_COREFILE_LIMIT='unlimited'
Optionally, enable core dump for SUID programs:
echo 1 > /proc/sys/fs/suid_dumpable
Edit the /etc/sysctl.conf and add the following:
fs.suid_dumpable = 1
kernel.core_uses_pid = 1
Where to dump the file.
sysctl -w kernel.core_pattern=core
sysctl -w kernel.core_pattern=/tmp/core.%u.%e.%p
- core dump file location should be writable.

Finally, perform sysctl -p to reload the settings.

Now consider your ftest program fails with segfaults ./launch.py <avocado tag : eg: iorsmall>,.

After you perform the above setup and run ftest program, you should see a core dump file under /tmp/core* location.

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