[Bug 1616902] Re: libdevmapper logging not properly initialized

[Liang Chen]

OK. This has been fixed in multipat-tools upstream repo.

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https://bugs.launchpad.net/bugs/1616902

Title:
  libdevmapper logging not properly initialized

Status in multipath-tools package in Ubuntu:
  New

Bug description:
          dm_init();
          if (getuid() != 0) {
                  fprintf(stderr, "need to be root\n");
                  exit(1);
          }
          /* make sure we don't lock any path */
          chdir("/");
          umask(umask(077) | 022);
          conf = alloc_config();

  
  dm_init is called before allocating conf. But dm_init depends on conf->verbosity to initialize libdevmapper logging. In the current situation, the verbosity is always set to 0 because conf is 0.

  extern void                                                            
  dm_init(void) {                                                        
          dm_log_init(&dm_write_log);                                    
          dm_log_init_verbose(conf ? conf->verbosity + 3 : 0);
  }

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