Merge branch 'master' of ssh://brick.kernel.dk/data/git/fio
[fio.git] / fio.c
diff --git a/fio.c b/fio.c
index dfda268712919a37c5f8aabf30b852bfbf3589ca..2beda816bb43d3102c675c848d67794b6f0876ca 100644 (file)
--- a/fio.c
+++ b/fio.c
 #include <unistd.h>
 #include <fcntl.h>
 #include <string.h>
+#include <limits.h>
 #include <signal.h>
 #include <time.h>
 #include <locale.h>
 #include <assert.h>
+#include <time.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
 #include <sys/ipc.h>
 #include "hash.h"
 #include "smalloc.h"
 #include "verify.h"
+#include "trim.h"
 #include "diskutil.h"
 #include "cgroup.h"
 #include "profile.h"
+#include "lib/rand.h"
+#include "memalign.h"
 
 unsigned long page_mask;
 unsigned long page_size;
@@ -60,8 +65,8 @@ static struct fio_mutex *startup_mutex;
 static struct fio_mutex *writeout_mutex;
 static volatile int fio_abort;
 static int exit_value;
-static struct itimerval itimer;
 static pthread_t gtod_thread;
+static pthread_t disk_util_thread;
 static struct flist_head *cgroup_list;
 static char *cgroup_mnt;
 
@@ -97,91 +102,85 @@ static void terminate_threads(int group_id)
                        /*
                         * if the thread is running, just let it exit
                         */
-                       if (td->runstate < TD_RUNNING)
-                               kill(td->pid, SIGQUIT);
+                       if (td->runstate < TD_RAMP)
+                               kill(td->pid, SIGTERM);
                        else {
                                struct ioengine_ops *ops = td->io_ops;
 
-                               if (ops && (ops->flags & FIO_SIGQUIT))
-                                       kill(td->pid, SIGQUIT);
+                               if (ops && (ops->flags & FIO_SIGTERM))
+                                       kill(td->pid, SIGTERM);
                        }
                }
        }
 }
 
-static void status_timer_arm(void)
+static void sig_int(int sig)
 {
-       itimer.it_value.tv_sec = 0;
-       itimer.it_value.tv_usec = DISK_UTIL_MSEC * 1000;
-       setitimer(ITIMER_REAL, &itimer, NULL);
+       if (threads) {
+               log_info("\nfio: terminating on signal %d\n", sig);
+               fflush(stdout);
+               exit_value = 128;
+               terminate_threads(TERMINATE_ALL);
+       }
 }
 
-static void sig_alrm(int fio_unused sig)
+static void *disk_thread_main(void *data)
 {
-       if (threads) {
+       fio_mutex_up(startup_mutex);
+
+       while (threads) {
+               usleep(DISK_UTIL_MSEC * 1000);
+               if (!threads)
+                       break;
                update_io_ticks();
                print_thread_status();
-               status_timer_arm();
        }
-}
 
-/*
- * Happens on thread runs with ctrl-c, ignore our own SIGQUIT
- */
-static void sig_quit(int sig)
-{
+       return NULL;
 }
 
-static void sig_int(int sig)
+static int create_disk_util_thread(void)
 {
-       if (threads) {
-               log_info("\nfio: terminating on signal %d\n", sig);
-               fflush(stdout);
-               terminate_threads(TERMINATE_ALL);
+       int ret;
+
+       ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
+       if (ret) {
+               log_err("Can't create disk util thread: %s\n", strerror(ret));
+               return 1;
        }
-}
 
-static void sig_ill(int fio_unused sig)
-{
-       if (!threads)
-               return;
+       ret = pthread_detach(disk_util_thread);
+       if (ret) {
+               log_err("Can't detatch disk util thread: %s\n", strerror(ret));
+               return 1;
+       }
 
-       log_err("fio: illegal instruction. your cpu does not support "
-               "the sse4.2 instruction for crc32c\n");
-       terminate_threads(TERMINATE_ALL);
-       exit(4);
+       dprint(FD_MUTEX, "wait on startup_mutex\n");
+       fio_mutex_down(startup_mutex);
+       dprint(FD_MUTEX, "done waiting on startup_mutex\n");
+       return 0;
 }
 
 static void set_sig_handlers(void)
 {
        struct sigaction act;
 
-       memset(&act, 0, sizeof(act));
-       act.sa_handler = sig_alrm;
-       act.sa_flags = SA_RESTART;
-       sigaction(SIGALRM, &act, NULL);
-
        memset(&act, 0, sizeof(act));
        act.sa_handler = sig_int;
        act.sa_flags = SA_RESTART;
        sigaction(SIGINT, &act, NULL);
 
        memset(&act, 0, sizeof(act));
-       act.sa_handler = sig_ill;
-       act.sa_flags = SA_RESTART;
-       sigaction(SIGILL, &act, NULL);
-
-       memset(&act, 0, sizeof(act));
-       act.sa_handler = sig_quit;
+       act.sa_handler = sig_int;
        act.sa_flags = SA_RESTART;
-       sigaction(SIGQUIT, &act, NULL);
+       sigaction(SIGTERM, &act, NULL);
 }
 
 /*
  * Check if we are above the minimum rate given.
  */
 static int __check_min_rate(struct thread_data *td, struct timeval *now,
-                           enum td_ddir ddir)
+                           enum fio_ddir ddir)
 {
        unsigned long long bytes = 0;
        unsigned long iops = 0;
@@ -191,6 +190,8 @@ static int __check_min_rate(struct thread_data *td, struct timeval *now,
        unsigned int rate_iops = 0;
        unsigned int rate_iops_min = 0;
 
+       assert(ddir_rw(ddir));
+
        if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
                return 0;
 
@@ -491,7 +492,6 @@ static void do_verify(struct thread_data *td)
                                clear_io_u(td, io_u);
                        } else if (io_u->resid) {
                                int bytes = io_u->xfer_buflen - io_u->resid;
-                               struct fio_file *f = io_u->file;
 
                                /*
                                 * zero read, fail
@@ -506,8 +506,10 @@ static void do_verify(struct thread_data *td)
                                io_u->xfer_buf += bytes;
                                io_u->offset += bytes;
 
-                               td->ts.short_io_u[io_u->ddir]++;
+                               if (ddir_rw(io_u->ddir))
+                                       td->ts.short_io_u[io_u->ddir]++;
 
+                               f = io_u->file;
                                if (io_u->offset == f->real_file_size)
                                        goto sync_done;
 
@@ -591,6 +593,7 @@ static void do_io(struct thread_data *td)
                td_set_runstate(td, TD_RUNNING);
 
        while ( (td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
+               (!flist_empty(&td->trim_list)) ||
                ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->o.size) ) {
                struct timeval comp_time;
                unsigned long bytes_done[2] = { 0, 0 };
@@ -651,7 +654,8 @@ static void do_io(struct thread_data *td)
                                io_u->xfer_buf += bytes;
                                io_u->offset += bytes;
 
-                               td->ts.short_io_u[io_u->ddir]++;
+                               if (ddir_rw(io_u->ddir))
+                                       td->ts.short_io_u[io_u->ddir]++;
 
                                if (io_u->offset == f->real_file_size)
                                        goto sync_done;
@@ -745,6 +749,9 @@ sync_done:
                }
        }
 
+       if (td->trim_entries)
+               printf("trim entries %ld\n", td->trim_entries);
+
        if (td->o.fill_device && td->error == ENOSPC) {
                td->error = 0;
                td->terminate = 1;
@@ -753,8 +760,11 @@ sync_done:
                struct fio_file *f;
 
                i = td->cur_depth;
-               if (i)
+               if (i) {
                        ret = io_u_queued_complete(td, i, NULL);
+                       if (td->o.fill_device && td->error == ENOSPC)
+                               td->error = 0;
+               }
 
                if (should_fsync(td) && td->o.end_fsync) {
                        td_set_runstate(td, TD_FSYNCING);
@@ -784,7 +794,7 @@ static void cleanup_io_u(struct thread_data *td)
                io_u = flist_entry(entry, struct io_u, list);
 
                flist_del(&io_u->list);
-               free(io_u);
+               fio_memfree(io_u, sizeof(*io_u));
        }
 
        free_io_mem(td);
@@ -817,7 +827,8 @@ static int init_io_u(struct thread_data *td)
        if (allocate_io_mem(td))
                return 1;
 
-       if (td->o.odirect || td->o.mem_align)
+       if (td->o.odirect || td->o.mem_align ||
+           (td->io_ops->flags & FIO_RAWIO))
                p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
        else
                p = td->orig_buffer;
@@ -830,8 +841,9 @@ static int init_io_u(struct thread_data *td)
                if (td->terminate)
                        return 1;
 
-               if (posix_memalign(&ptr, cl_align, sizeof(*io_u))) {
-                       log_err("fio: posix_memalign=%s\n", strerror(errno));
+               ptr = fio_memalign(cl_align, sizeof(*io_u));
+               if (!ptr) {
+                       log_err("fio: unable to allocate aligned memory\n");
                        break;
                }
 
@@ -846,6 +858,13 @@ static int init_io_u(struct thread_data *td)
 
                        if (td_write(td) && !td->o.refill_buffers)
                                io_u_fill_buffer(td, io_u, max_bs);
+                       else if (td_write(td) && td->o.verify_pattern_bytes) {
+                               /*
+                                * Fill the buffer with the pattern if we are
+                                * going to be doing writes.
+                                */
+                               fill_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
+                       }
                }
 
                io_u->index = i;
@@ -968,8 +987,10 @@ void reset_all_stats(struct thread_data *td)
                td->io_issues[i] = 0;
                td->ts.total_io_u[i] = 0;
        }
-       
+
        fio_gettime(&tv, NULL);
+       td->ts.runtime[0] = 0;
+       td->ts.runtime[1] = 0;
        memcpy(&td->epoch, &tv, sizeof(tv));
        memcpy(&td->start, &tv, sizeof(tv));
 }
@@ -1008,7 +1029,7 @@ static int exec_string(const char *string)
  */
 static void *thread_main(void *data)
 {
-       unsigned long long runtime[2], elapsed;
+       unsigned long long elapsed;
        struct thread_data *td = data;
        pthread_condattr_t attr;
        int clear_state;
@@ -1026,6 +1047,7 @@ static void *thread_main(void *data)
        INIT_FLIST_HEAD(&td->io_log_list);
        INIT_FLIST_HEAD(&td->io_hist_list);
        INIT_FLIST_HEAD(&td->verify_list);
+       INIT_FLIST_HEAD(&td->trim_list);
        pthread_mutex_init(&td->io_u_lock, NULL);
        td->io_hist_tree = RB_ROOT;
 
@@ -1046,14 +1068,18 @@ static void *thread_main(void *data)
         */
        fio_mutex_remove(td->mutex);
 
-       if (td->o.uid != -1U && setuid(td->o.uid)) {
-               td_verror(td, errno, "setuid");
-               goto err;
-       }
+       /*
+        * A new gid requires privilege, so we need to do this before setting
+        * the uid.
+        */
        if (td->o.gid != -1U && setgid(td->o.gid)) {
                td_verror(td, errno, "setgid");
                goto err;
        }
+       if (td->o.uid != -1U && setuid(td->o.uid)) {
+               td_verror(td, errno, "setuid");
+               goto err;
+       }
 
        /*
         * May alter parameters that init_io_u() will use, so we need to
@@ -1125,7 +1151,6 @@ static void *thread_main(void *data)
        fio_gettime(&td->epoch, NULL);
        getrusage(RUSAGE_SELF, &td->ts.ru_start);
 
-       runtime[0] = runtime[1] = 0;
        clear_state = 0;
        while (keep_running(td)) {
                fio_gettime(&td->start, NULL);
@@ -1150,11 +1175,11 @@ static void *thread_main(void *data)
 
                if (td_read(td) && td->io_bytes[DDIR_READ]) {
                        elapsed = utime_since_now(&td->start);
-                       runtime[DDIR_READ] += elapsed;
+                       td->ts.runtime[DDIR_READ] += elapsed;
                }
                if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
                        elapsed = utime_since_now(&td->start);
-                       runtime[DDIR_WRITE] += elapsed;
+                       td->ts.runtime[DDIR_WRITE] += elapsed;
                }
 
                if (td->error || td->terminate)
@@ -1171,15 +1196,15 @@ static void *thread_main(void *data)
 
                do_verify(td);
 
-               runtime[DDIR_READ] += utime_since_now(&td->start);
+               td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
 
                if (td->error || td->terminate)
                        break;
        }
 
        update_rusage_stat(td);
-       td->ts.runtime[0] = (runtime[0] + 999) / 1000;
-       td->ts.runtime[1] = (runtime[1] + 999) / 1000;
+       td->ts.runtime[0] = (td->ts.runtime[0] + 999) / 1000;
+       td->ts.runtime[1] = (td->ts.runtime[1] + 999) / 1000;
        td->ts.total_run_time = mtime_since_now(&td->epoch);
        td->ts.io_bytes[0] = td->io_bytes[0];
        td->ts.io_bytes[1] = td->io_bytes[1];
@@ -1192,6 +1217,13 @@ static void *thread_main(void *data)
                } else
                        finish_log(td, td->ts.bw_log, "bw");
        }
+       if (td->ts.lat_log) {
+               if (td->o.lat_log_file) {
+                       finish_log_named(td, td->ts.lat_log,
+                                               td->o.lat_log_file, "lat");
+               } else
+                       finish_log(td, td->ts.lat_log, "lat");
+       }
        if (td->ts.slat_log) {
                if (td->o.lat_log_file) {
                        finish_log_named(td, td->ts.slat_log,
@@ -1324,7 +1356,7 @@ static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
                        if (WIFSIGNALED(status)) {
                                int sig = WTERMSIG(status);
 
-                               if (sig != SIGQUIT)
+                               if (sig != SIGTERM)
                                        log_err("fio: pid=%d, got signal=%d\n",
                                                        (int) td->pid, sig);
                                td_set_runstate(td, TD_REAPED);
@@ -1381,9 +1413,13 @@ static void *gtod_thread_main(void *data)
 
 static int fio_start_gtod_thread(void)
 {
+       pthread_attr_t attr;
        int ret;
 
-       ret = pthread_create(&gtod_thread, NULL, gtod_thread_main, NULL);
+       pthread_attr_init(&attr);
+       pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
+       ret = pthread_create(&gtod_thread, &attr, gtod_thread_main, NULL);
+       pthread_attr_destroy(&attr);
        if (ret) {
                log_err("Can't create gtod thread: %s\n", strerror(ret));
                return 1;
@@ -1460,14 +1496,14 @@ static void run_threads(void)
                        todo--;
                } else {
                        struct fio_file *f;
-                       unsigned int i;
+                       unsigned int j;
 
                        /*
                         * for sharing to work, each job must always open
                         * its own files. so close them, if we opened them
                         * for creation
                         */
-                       for_each_file(td, f, i) {
+                       for_each_file(td, f, j) {
                                if (fio_file_open(f))
                                        td_io_close_file(td, f);
                        }
@@ -1479,7 +1515,7 @@ static void run_threads(void)
        set_genesis_time();
 
        while (todo) {
-               struct thread_data *map[MAX_JOBS];
+               struct thread_data *map[REAL_MAX_JOBS];
                struct timeval this_start;
                int this_jobs = 0, left;
 
@@ -1636,6 +1672,7 @@ int main(int argc, char *argv[])
        long ps;
 
        sinit();
+       init_rand(&__fio_rand_state);
 
        /*
         * We need locale for number printing, if it isn't set then just
@@ -1670,11 +1707,14 @@ int main(int argc, char *argv[])
        }
 
        startup_mutex = fio_mutex_init(0);
+       if (startup_mutex == NULL)
+               return 1;
        writeout_mutex = fio_mutex_init(1);
+       if (writeout_mutex == NULL)
+               return 1;
 
        set_genesis_time();
-
-       status_timer_arm();
+       create_disk_util_thread();
 
        cgroup_list = smalloc(sizeof(*cgroup_list));
        INIT_FLIST_HEAD(cgroup_list);
@@ -1692,8 +1732,7 @@ int main(int argc, char *argv[])
 
        cgroup_kill(cgroup_list);
        sfree(cgroup_list);
-       if (cgroup_mnt)
-               sfree(cgroup_mnt);
+       sfree(cgroup_mnt);
 
        fio_mutex_remove(startup_mutex);
        fio_mutex_remove(writeout_mutex);