Persistent Memory Development Kit This is src/test/log_walker/README. This directory contains a unit test to verify pool's write-protection in debug mode. It works only in debug mode. The program in log_walker.c takes only a file name as an argument. For example: ./log_walker file1 this calls pmemlog_open() on file1 and pmemlog_append() to append six strings to the log. Next pmemlog_walk() is called and the walk handler tries to store to the buffer and SIGSEGV is caught and reported.