Package: lvm2 Version: 2.03.16-2 I would highly recommend to set snaphot_autoextend_threshold and thin_pool_autoextend_threshold to 70 (or another reasonable value) by default than disabling the autoextend feature. AFAICT the dmeventd infrastructure is in place, anyway.
Without autoextend a snapshot exceeding its limits is fatal. The default warnings dmeventd writes to syslog are easy to miss. Regards Harri