#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <linux/fs.h>
#include <dirent.h>
#include "flist.h"
#include "fio.h"
#include "blktrace_api.h"
-#include "lib/linux-dev-lookup.h"
+#include "oslib/linux-dev-lookup.h"
#define TRACE_FIFO_SIZE 8192
flist_add_tail(&ipo->list, &td->io_log_list);
}
-static int trace_add_file(struct thread_data *td, __u32 device)
+static int get_dev_blocksize(const char *dev, unsigned int *bs)
{
- static unsigned int last_maj, last_min, last_fileno;
+ int fd;
+
+ fd = open(dev, O_RDONLY);
+ if (fd < 0)
+ return 1;
+
+ if (ioctl(fd, BLKSSZGET, bs) < 0) {
+ close(fd);
+ return 1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+static int trace_add_file(struct thread_data *td, __u32 device,
+ unsigned int *bs)
+{
+ static unsigned int last_maj, last_min, last_fileno, last_bs;
unsigned int maj = FMAJOR(device);
unsigned int min = FMINOR(device);
struct fio_file *f;
- char dev[256];
unsigned int i;
+ char dev[256];
- if (last_maj == maj && last_min == min)
+ if (last_maj == maj && last_min == min) {
+ *bs = last_bs;
return last_fileno;
+ }
last_maj = maj;
last_min = min;
/*
* check for this file in our list
*/
- for_each_file(td, f, i)
+ for_each_file(td, f, i) {
if (f->major == maj && f->minor == min) {
last_fileno = f->fileno;
- return last_fileno;
+ last_bs = f->bs;
+ goto out;
}
+ }
strcpy(dev, "/dev");
if (blktrace_lookup_device(td->o.replay_redirect, dev, maj, min)) {
+ unsigned int this_bs;
int fileno;
if (td->o.replay_redirect)
dprint(FD_BLKTRACE, "add devices %s\n", dev);
fileno = add_file_exclusive(td, dev);
+
+ if (get_dev_blocksize(dev, &this_bs))
+ this_bs = 512;
+
td->o.open_files++;
td->files[fileno]->major = maj;
td->files[fileno]->minor = min;
+ td->files[fileno]->bs = this_bs;
trace_add_open_close_event(td, fileno, FIO_LOG_OPEN_FILE);
+
last_fileno = fileno;
+ last_bs = this_bs;
}
+out:
+ *bs = last_bs;
return last_fileno;
}
+static void t_bytes_align(struct thread_options *o, struct blk_io_trace *t)
+{
+ if (!o->replay_align)
+ return;
+
+ t->bytes = (t->bytes + o->replay_align - 1) & ~(o->replay_align - 1);
+}
+
+static void ipo_bytes_align(struct thread_options *o, struct io_piece *ipo)
+{
+ if (!o->replay_align)
+ return;
+
+ ipo->offset &= ~(o->replay_align - 1);
+}
+
+
/*
* Store blk_io_trace data in an ipo for later retrieval.
*/
static void store_ipo(struct thread_data *td, unsigned long long offset,
unsigned int bytes, int rw, unsigned long long ttime,
- int fileno)
+ int fileno, unsigned int bs)
{
struct io_piece *ipo = malloc(sizeof(*ipo));
init_ipo(ipo);
- /*
- * the 512 is wrong here, it should be the hardware sector size...
- */
- ipo->offset = offset * 512;
+ ipo->offset = offset * bs;
+ if (td->o.replay_scale)
+ ipo->offset = ipo->offset / td->o.replay_scale;
+ ipo_bytes_align(&td->o, ipo);
ipo->len = bytes;
ipo->delay = ttime / 1000;
if (rw)
static void handle_trace_discard(struct thread_data *td,
struct blk_io_trace *t,
unsigned long long ttime,
- unsigned long *ios, unsigned int *bs)
+ unsigned long *ios, unsigned int *rw_bs)
{
struct io_piece *ipo = malloc(sizeof(*ipo));
+ unsigned int bs;
int fileno;
init_ipo(ipo);
- fileno = trace_add_file(td, t->device);
+ fileno = trace_add_file(td, t->device, &bs);
ios[DDIR_TRIM]++;
- if (t->bytes > bs[DDIR_TRIM])
- bs[DDIR_TRIM] = t->bytes;
+ if (t->bytes > rw_bs[DDIR_TRIM])
+ rw_bs[DDIR_TRIM] = t->bytes;
td->o.size += t->bytes;
memset(ipo, 0, sizeof(*ipo));
INIT_FLIST_HEAD(&ipo->list);
- /*
- * the 512 is wrong here, it should be the hardware sector size...
- */
- ipo->offset = t->sector * 512;
+ ipo->offset = t->sector * bs;
+ if (td->o.replay_scale)
+ ipo->offset = ipo->offset / td->o.replay_scale;
+ ipo_bytes_align(&td->o, ipo);
ipo->len = t->bytes;
ipo->delay = ttime / 1000;
ipo->ddir = DDIR_TRIM;
static void handle_trace_fs(struct thread_data *td, struct blk_io_trace *t,
unsigned long long ttime, unsigned long *ios,
- unsigned int *bs)
+ unsigned int *rw_bs)
{
+ unsigned int bs;
int rw;
int fileno;
- fileno = trace_add_file(td, t->device);
+ fileno = trace_add_file(td, t->device, &bs);
rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
- if (t->bytes > bs[rw])
- bs[rw] = t->bytes;
+ if (t->bytes > rw_bs[rw])
+ rw_bs[rw] = t->bytes;
ios[rw]++;
td->o.size += t->bytes;
- store_ipo(td, t->sector, t->bytes, rw, ttime, fileno);
+ store_ipo(td, t->sector, t->bytes, rw, ttime, fileno, bs);
}
/*
unsigned long *ios, unsigned int *bs)
{
static unsigned long long last_ttime;
- unsigned long long delay;
+ unsigned long long delay = 0;
if ((t->action & 0xffff) != __BLK_TA_QUEUE)
return;
}
}
+ t_bytes_align(&td->o, t);
+
if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY))
handle_trace_notify(t);
else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
return (t->action & BLK_TC_ACT(BLK_TC_WRITE | BLK_TC_DISCARD)) != 0;
}
+static enum fio_ddir t_get_ddir(struct blk_io_trace *t)
+{
+ if (t->action & BLK_TC_ACT(BLK_TC_READ))
+ return DDIR_READ;
+ else if (t->action & BLK_TC_ACT(BLK_TC_WRITE))
+ return DDIR_WRITE;
+ else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
+ return DDIR_TRIM;
+
+ return DDIR_INVAL;
+}
+
+static void depth_inc(struct blk_io_trace *t, int *depth)
+{
+ enum fio_ddir ddir;
+
+ ddir = t_get_ddir(t);
+ if (ddir != DDIR_INVAL)
+ depth[ddir]++;
+}
+
+static void depth_dec(struct blk_io_trace *t, int *depth)
+{
+ enum fio_ddir ddir;
+
+ ddir = t_get_ddir(t);
+ if (ddir != DDIR_INVAL)
+ depth[ddir]--;
+}
+
+static void depth_end(struct blk_io_trace *t, int *this_depth, int *depth)
+{
+ enum fio_ddir ddir = DDIR_INVAL;
+
+ ddir = t_get_ddir(t);
+ if (ddir != DDIR_INVAL) {
+ depth[ddir] = max(depth[ddir], this_depth[ddir]);
+ this_depth[ddir] = 0;
+ }
+}
+
/*
* Load a blktrace file by reading all the blk_io_trace entries, and storing
* them as io_pieces like the fio text version would do.
struct fifo *fifo;
int fd, i, old_state;
struct fio_file *f;
- int this_depth, depth;
+ int this_depth[DDIR_RWDIR_CNT], depth[DDIR_RWDIR_CNT], max_depth;
fd = open(filename, O_RDONLY);
if (fd < 0) {
td->o.size = 0;
- ios[0] = ios[1] = 0;
- rw_bs[0] = rw_bs[1] = 0;
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ ios[i] = 0;
+ rw_bs[i] = 0;
+ this_depth[i] = 0;
+ depth[i] = 0;
+ }
+
skipped_writes = 0;
- this_depth = depth = 0;
do {
int ret = trace_fifo_get(td, fifo, fd, &t, sizeof(t));
}
if ((t.action & BLK_TC_ACT(BLK_TC_NOTIFY)) == 0) {
if ((t.action & 0xffff) == __BLK_TA_QUEUE)
- this_depth++;
- else if ((t.action & 0xffff) == __BLK_TA_COMPLETE) {
- depth = max(depth, this_depth);
- this_depth = 0;
- }
+ depth_inc(&t, this_depth);
+ else if (((t.action & 0xffff) == __BLK_TA_BACKMERGE) ||
+ ((t.action & 0xffff) == __BLK_TA_FRONTMERGE))
+ depth_dec(&t, this_depth);
+ else if ((t.action & 0xffff) == __BLK_TA_COMPLETE)
+ depth_end(&t, this_depth, depth);
if (t_is_write(&t) && read_only) {
skipped_writes++;
* For stacked devices, we don't always get a COMPLETE event so
* the depth grows to insane values. Limit it to something sane(r).
*/
- if (!depth || depth > 1024)
- depth = 1024;
+ max_depth = 0;
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ if (depth[i] > 1024)
+ depth[i] = 1024;
+ else if (!depth[i] && ios[i])
+ depth[i] = 1;
+ max_depth = max(depth[i], max_depth);
+ }
if (skipped_writes)
log_err("fio: %s skips replay of %lu writes due to read-only\n",
/*
* We need to do direct/raw ios to the device, to avoid getting
- * read-ahead in our way.
+ * read-ahead in our way. But only do so if the minimum block size
+ * is a multiple of 4k, otherwise we don't know if it's safe to do so.
*/
- td->o.odirect = 1;
+ if (!fio_option_is_set(&td->o, odirect) && !(td_min_bs(td) & 4095))
+ td->o.odirect = 1;
/*
- * we don't know if this option was set or not. it defaults to 1,
- * so we'll just guess that we should override it if it's still 1
+ * If depth wasn't manually set, use probed depth
*/
- if (td->o.iodepth != 1)
- td->o.iodepth = depth;
+ if (!fio_option_is_set(&td->o, iodepth))
+ td->o.iodepth = td->o.iodepth_low = max_depth;
return 0;
err: