On 8/18/2020 8:04 PM, Jonathan Tan wrote: >> If the lock file already exists, then fail silently. This will become > > Maybe "skip all maintenance steps silently"? > >> + if (hold_lock_file_for_update(&lk, lock_path, LOCK_NO_DEREF) < 0) { >> + /* >> + * Another maintenance command is running. >> + * >> + * If --auto was provided, then it is likely due to a >> + * recursive process stack. Do not report an error in >> + * that case. >> + */ >> + if (!opts->auto_flag && !opts->quiet) >> + error(_("lock file '%s' exists, skipping maintenance"), >> + lock_path); >> + free(lock_path); >> + return 0; >> + } > > As it is, this doesn't seem very silent. :-) If we do want a message to > be printed maybe make it warning instead of error. Sorry, it is silent when "--auto" is specified. The commit message needs to reflect this properly. This could easily be downgraded to a warning. > Other than that, the idea of having a lock file and the implementation > in this patch look good to me. Thanks, -Stolee