- reads = writes = 0;
- while ((p = fgets(str, 4096, f)) != NULL) {
- struct io_piece *ipo;
- int r;
-
- r = sscanf(p, "%256s %256s %llu %u", fname, act, &offset,
- &bytes);
- if (r == 4) {
- /*
- * Check action first
- */
- if (!strcmp(act, "read"))
- rw = DDIR_READ;
- else if (!strcmp(act, "write"))
- rw = DDIR_WRITE;
- else if (!strcmp(act, "sync"))
- rw = DDIR_SYNC;
- else {
- log_err("fio: bad iolog file action: %s\n",
- act);
- continue;
- }
- } else if (r == 2) {
- rw = DDIR_INVAL;
- if (!strcmp(act, "add")) {
- td->o.nr_files++;
- fileno = add_file(td, fname);
- file_action = FIO_LOG_ADD_FILE;
- continue;
- } else if (!strcmp(act, "open")) {
- fileno = get_fileno(td, fname);
- file_action = FIO_LOG_OPEN_FILE;
- } else if (!strcmp(act, "close")) {
- fileno = get_fileno(td, fname);
- file_action = FIO_LOG_CLOSE_FILE;
- } else {
- log_err("fio: bad iolog file action: %s\n",
- act);
- continue;
- }
- } else {
- log_err("bad iolog2: %s", p);
- continue;
- }
-
- if (rw == DDIR_READ)
- reads++;
- else if (rw == DDIR_WRITE) {
- /*
- * Don't add a write for ro mode
- */
- if (read_only)
- continue;
- writes++;
- } else if (rw != DDIR_SYNC && rw != DDIR_INVAL) {
- log_err("bad ddir: %d\n", rw);
- continue;
- }
-
- /*
- * Make note of file
- */
- ipo = malloc(sizeof(*ipo));
- memset(ipo, 0, sizeof(*ipo));
- INIT_FLIST_HEAD(&ipo->list);
- ipo->offset = offset;
- ipo->len = bytes;
- ipo->ddir = rw;
- if (bytes > td->o.max_bs[rw])
- td->o.max_bs[rw] = bytes;
- if (rw == DDIR_INVAL) {
- ipo->fileno = fileno;
- ipo->file_action = file_action;
- }
- queue_io_piece(td, ipo);
- }
-
- free(str);
- free(act);
- free(fname);
-
- if (writes && read_only) {
- log_err("fio: <%s> skips replay of %d writes due to"
- " read-only\n", td->o.name, writes);
- writes = 0;
- }
-
- if (!reads && !writes)
- return 1;
- else if (reads && !writes)
- td->o.td_ddir = TD_DDIR_READ;
- else if (!reads && writes)
- td->o.td_ddir = TD_DDIR_WRITE;
- else
- td->o.td_ddir = TD_DDIR_RW;
-
- return 0;
-}
-
-/*
- * open iolog, check version, and call appropriate parser
- */
-static int init_iolog_read(struct thread_data *td)
-{
- char buffer[256], *p;
- FILE *f;
- int ret;
-
- f = fopen(td->o.read_iolog_file, "r");
- if (!f) {
- perror("fopen read iolog");
- return 1;
- }
-
- p = fgets(buffer, sizeof(buffer), f);
- if (!p) {
- td_verror(td, errno, "iolog read");
- log_err("fio: unable to read iolog\n");
- return 1;
- }
-
- /*
- * version 2 of the iolog stores a specific string as the
- * first line, check for that
- */
- if (!strncmp(iolog_ver2, buffer, strlen(iolog_ver2)))
- ret = read_iolog2(td, f);
- else {
- log_err("fio: iolog version 1 is no longer supported\n");
- ret = 1;
- }
-
- fclose(f);
- return ret;
-}
-
-/*
- * Setup a log for storing io patterns.
- */
-static int init_iolog_write(struct thread_data *td)
-{
- struct fio_file *ff;
- FILE *f;
- unsigned int i;
-
- f = fopen(td->o.write_iolog_file, "a");
- if (!f) {
- perror("fopen write iolog");
- return 1;
- }
-
- /*
- * That's it for writing, setup a log buffer and we're done.
- */
- td->iolog_f = f;
- td->iolog_buf = malloc(8192);
- setvbuf(f, td->iolog_buf, _IOFBF, 8192);
-
- /*
- * write our version line
- */
- if (fprintf(f, "%s\n", iolog_ver2) < 0) {
- perror("iolog init\n");
- return 1;
- }
-
- /*
- * add all known files
- */
- for_each_file(td, ff, i)
- log_file(td, ff, FIO_LOG_ADD_FILE);
-
- return 0;
-}
-
-int init_iolog(struct thread_data *td)
-{
- int ret = 0;
-
- if (td->o.read_iolog_file) {
- /*
- * Check if it's a blktrace file and load that if possible.
- * Otherwise assume it's a normal log file and load that.
- */
- if (is_blktrace(td->o.read_iolog_file))
- ret = load_blktrace(td, td->o.read_iolog_file);
- else
- ret = init_iolog_read(td);
- } else if (td->o.write_iolog_file)
- ret = init_iolog_write(td);
-
- return ret;
-}
-
-void setup_log(struct io_log **log)
-{
- struct io_log *l = malloc(sizeof(*l));
-
- l->nr_samples = 0;
- l->max_samples = 1024;
- l->log = malloc(l->max_samples * sizeof(struct io_sample));
- *log = l;
-}
-
-void __finish_log(struct io_log *log, const char *name)
-{
- unsigned int i;
- FILE *f;
-
- f = fopen(name, "a");
- if (!f) {
- perror("fopen log");
- return;
- }
-
- for (i = 0; i < log->nr_samples; i++) {
- fprintf(f, "%lu, %lu, %u, %u\n", log->log[i].time,
- log->log[i].val,
- log->log[i].ddir,
- log->log[i].bs);
- }
-
- fclose(f);
- free(log->log);
- free(log);
-}
-
-void finish_log_named(struct thread_data *td, struct io_log *log,
- const char *prefix, const char *postfix)
-{
- char file_name[256], *p;
-
- snprintf(file_name, 200, "%s_%s.log", prefix, postfix);
- p = basename(file_name);
- __finish_log(log, p);
-}
-
-void finish_log(struct thread_data *td, struct io_log *log, const char *name)
-{
- finish_log_named(td, log, td->o.name, name);