char *get_dumpdate(info_t *info, int level);
double perf_average(double *array, double def);
int get_info(char *hostname, char *diskname, info_t *info);
-int get_firstkey(char *hostname, int hostname_size,
- char *diskname, int diskname_size);
-int get_nextkey(char *hostname, int hostname_size,
- char *diskname, int diskname_size);
int put_info(char *hostname, char *diskname, info_t *info);
int del_info(char *hostname, char *diskname);