Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 1 | /* |
| 2 | * The io parts of the fio tool, includes workers for sync and mmap'ed |
| 3 | * io, as well as both posix and linux libaio support. |
| 4 | * |
| 5 | * sync io is implemented on top of aio. |
| 6 | * |
| 7 | * This is not really specific to fio, if the get_io_u/put_io_u and |
| 8 | * structures was pulled into this as well it would be a perfectly |
| 9 | * generic io engine that could be used for other projects. |
| 10 | * |
| 11 | */ |
| 12 | #include <stdio.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <unistd.h> |
Jens Axboe | 5c4e1db | 2006-06-07 14:17:08 +0200 | [diff] [blame] | 15 | #include <string.h> |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 16 | #include <dlfcn.h> |
Bruce Cran | ecc314b | 2011-01-04 10:59:30 +0100 | [diff] [blame] | 17 | #include <fcntl.h> |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 18 | #include <assert.h> |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 19 | |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 20 | #include "fio.h" |
Jens Axboe | 7c9b1bc | 2009-06-03 09:25:57 +0200 | [diff] [blame] | 21 | #include "diskutil.h" |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 22 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 23 | static FLIST_HEAD(engine_list); |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 24 | |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 25 | static int check_engine_ops(struct ioengine_ops *ops) |
| 26 | { |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 27 | if (ops->version != FIO_IOOPS_VERSION) { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 28 | log_err("bad ioops version %d (want %d)\n", ops->version, |
| 29 | FIO_IOOPS_VERSION); |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 30 | return 1; |
| 31 | } |
| 32 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 33 | if (!ops->queue) { |
| 34 | log_err("%s: no queue handler\n", ops->name); |
| 35 | return 1; |
| 36 | } |
| 37 | |
| 38 | /* |
| 39 | * sync engines only need a ->queue() |
| 40 | */ |
| 41 | if (ops->flags & FIO_SYNCIO) |
| 42 | return 0; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 43 | |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 44 | if (!ops->event) { |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 45 | log_err("%s: no event handler\n", ops->name); |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 46 | return 1; |
| 47 | } |
| 48 | if (!ops->getevents) { |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 49 | log_err("%s: no getevents handler\n", ops->name); |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 50 | return 1; |
| 51 | } |
| 52 | if (!ops->queue) { |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 53 | log_err("%s: no queue handler\n", ops->name); |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 54 | return 1; |
| 55 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 56 | |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 57 | return 0; |
| 58 | } |
| 59 | |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 60 | void unregister_ioengine(struct ioengine_ops *ops) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 61 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 62 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 63 | flist_del(&ops->list); |
| 64 | INIT_FLIST_HEAD(&ops->list); |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 65 | } |
| 66 | |
Jens Axboe | b2fdda4 | 2007-02-20 20:52:51 +0100 | [diff] [blame] | 67 | void register_ioengine(struct ioengine_ops *ops) |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 68 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 69 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 70 | INIT_FLIST_HEAD(&ops->list); |
| 71 | flist_add_tail(&ops->list, &engine_list); |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | static struct ioengine_ops *find_ioengine(const char *name) |
| 75 | { |
| 76 | struct ioengine_ops *ops; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 77 | struct flist_head *entry; |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 78 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 79 | flist_for_each(entry, &engine_list) { |
| 80 | ops = flist_entry(entry, struct ioengine_ops, list); |
Jens Axboe | bc5b77a | 2007-02-28 09:32:54 +0100 | [diff] [blame] | 81 | if (!strcmp(name, ops->name)) |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 82 | return ops; |
| 83 | } |
| 84 | |
| 85 | return NULL; |
| 86 | } |
| 87 | |
| 88 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, |
| 89 | const char *engine_lib) |
| 90 | { |
| 91 | struct ioengine_ops *ops; |
| 92 | void *dlhandle; |
| 93 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 94 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
| 95 | |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 96 | dlerror(); |
| 97 | dlhandle = dlopen(engine_lib, RTLD_LAZY); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 98 | if (!dlhandle) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 99 | td_vmsg(td, -1, dlerror(), "dlopen"); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 100 | return NULL; |
| 101 | } |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 102 | |
Jens Axboe | da51c05 | 2006-11-07 16:02:11 +0100 | [diff] [blame] | 103 | /* |
| 104 | * Unlike the included modules, external engines should have a |
| 105 | * non-static ioengine structure that we can reference. |
| 106 | */ |
Dmitry Monakhov | 0abea0b | 2012-09-19 23:22:54 +0400 | [diff] [blame] | 107 | ops = dlsym(dlhandle, engine_lib); |
| 108 | if (!ops) |
| 109 | ops = dlsym(dlhandle, "ioengine"); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 110 | if (!ops) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 111 | td_vmsg(td, -1, dlerror(), "dlsym"); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 112 | dlclose(dlhandle); |
| 113 | return NULL; |
| 114 | } |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 115 | |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 116 | ops->dlhandle = dlhandle; |
| 117 | return ops; |
| 118 | } |
| 119 | |
| 120 | struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name) |
| 121 | { |
| 122 | struct ioengine_ops *ops, *ret; |
| 123 | char engine[16]; |
| 124 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 125 | dprint(FD_IO, "load ioengine %s\n", name); |
| 126 | |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 127 | strncpy(engine, name, sizeof(engine) - 1); |
| 128 | |
| 129 | /* |
| 130 | * linux libaio has alias names, so convert to what we want |
| 131 | */ |
| 132 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) |
| 133 | strcpy(engine, "libaio"); |
| 134 | |
| 135 | ops = find_ioengine(engine); |
| 136 | if (!ops) |
| 137 | ops = dlopen_ioengine(td, name); |
| 138 | |
| 139 | if (!ops) { |
| 140 | log_err("fio: engine %s not loadable\n", name); |
Jens Axboe | b902ceb | 2006-10-09 16:11:45 +0200 | [diff] [blame] | 141 | return NULL; |
| 142 | } |
| 143 | |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 144 | /* |
| 145 | * Check that the required methods are there. |
| 146 | */ |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 147 | if (check_engine_ops(ops)) |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 148 | return NULL; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 149 | |
Jens Axboe | 8458500 | 2006-10-19 20:26:22 +0200 | [diff] [blame] | 150 | ret = malloc(sizeof(*ret)); |
| 151 | memcpy(ret, ops, sizeof(*ret)); |
| 152 | ret->data = NULL; |
Jens Axboe | 8458500 | 2006-10-19 20:26:22 +0200 | [diff] [blame] | 153 | |
| 154 | return ret; |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 155 | } |
| 156 | |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 157 | /* |
| 158 | * For cleaning up an ioengine which never made it to init(). |
| 159 | */ |
| 160 | void free_ioengine(struct thread_data *td) |
| 161 | { |
| 162 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
| 163 | |
| 164 | if (td->eo && td->io_ops->options) { |
| 165 | options_free(td->io_ops->options, td->eo); |
| 166 | free(td->eo); |
| 167 | td->eo = NULL; |
| 168 | } |
| 169 | |
| 170 | if (td->io_ops->dlhandle) |
| 171 | dlclose(td->io_ops->dlhandle); |
| 172 | |
| 173 | free(td->io_ops); |
| 174 | td->io_ops = NULL; |
| 175 | } |
| 176 | |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 177 | void close_ioengine(struct thread_data *td) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 178 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 179 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); |
| 180 | |
Jens Axboe | 2992b05 | 2008-05-30 22:07:12 +0200 | [diff] [blame] | 181 | if (td->io_ops->cleanup) { |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 182 | td->io_ops->cleanup(td); |
Jens Axboe | 2992b05 | 2008-05-30 22:07:12 +0200 | [diff] [blame] | 183 | td->io_ops->data = NULL; |
| 184 | } |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 185 | |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 186 | free_ioengine(td); |
Jens Axboe | b990b5c | 2006-09-14 09:48:22 +0200 | [diff] [blame] | 187 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 188 | |
| 189 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
| 190 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 191 | dprint_io_u(io_u, "prep"); |
Jens Axboe | 7101d9c | 2007-09-12 13:12:39 +0200 | [diff] [blame] | 192 | fio_ro_check(td, io_u); |
| 193 | |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 194 | lock_file(td, io_u->file, io_u->ddir); |
Jens Axboe | b2bd2bd | 2008-03-01 18:19:52 +0100 | [diff] [blame] | 195 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 196 | if (td->io_ops->prep) { |
| 197 | int ret = td->io_ops->prep(td, io_u); |
| 198 | |
| 199 | dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret); |
Jens Axboe | b2bd2bd | 2008-03-01 18:19:52 +0100 | [diff] [blame] | 200 | if (ret) |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 201 | unlock_file(td, io_u->file); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 202 | return ret; |
| 203 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
Jens Axboe | e7d2e61 | 2007-12-11 10:49:39 +0100 | [diff] [blame] | 208 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 209 | struct timespec *t) |
| 210 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 211 | int r = 0; |
| 212 | |
Yufei Ren | a05d62b | 2012-03-15 14:44:47 +0100 | [diff] [blame] | 213 | /* |
| 214 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, |
| 215 | * server side gets a message from the client |
| 216 | * side that the task is finished, and |
| 217 | * td->done is set to 1 after td_io_commit(). In this case, |
| 218 | * there is no need to reap complete event in server side. |
| 219 | */ |
| 220 | if (td->done) |
| 221 | return 0; |
| 222 | |
Jens Axboe | face81b | 2007-02-26 10:40:03 +0100 | [diff] [blame] | 223 | if (min > 0 && td->io_ops->commit) { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 224 | r = td->io_ops->commit(td); |
Jens Axboe | face81b | 2007-02-26 10:40:03 +0100 | [diff] [blame] | 225 | if (r < 0) |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 226 | goto out; |
Jens Axboe | face81b | 2007-02-26 10:40:03 +0100 | [diff] [blame] | 227 | } |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 228 | if (max > td->cur_depth) |
| 229 | max = td->cur_depth; |
| 230 | if (min > max) |
| 231 | max = min; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 232 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 233 | r = 0; |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 234 | if (max && td->io_ops->getevents) |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 235 | r = td->io_ops->getevents(td, min, max, t); |
| 236 | out: |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 237 | if (r >= 0) { |
| 238 | /* |
Jens Axboe | 3c3ed07 | 2012-03-27 09:12:39 +0200 | [diff] [blame] | 239 | * Reflect that our submitted requests were retrieved with |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 240 | * whatever OS async calls are in the underlying engine. |
| 241 | */ |
| 242 | td->io_u_in_flight -= r; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 243 | io_u_mark_complete(td, r); |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 244 | } else |
Jens Axboe | 7c639b1 | 2010-03-19 08:48:05 +0100 | [diff] [blame] | 245 | td_verror(td, r, "get_events"); |
Jens Axboe | f3e11d0 | 2010-03-18 19:31:06 +0100 | [diff] [blame] | 246 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 247 | dprint(FD_IO, "getevents: %d\n", r); |
| 248 | return r; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | int td_io_queue(struct thread_data *td, struct io_u *io_u) |
| 252 | { |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 253 | int ret; |
| 254 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 255 | dprint_io_u(io_u, "queue"); |
Jens Axboe | 7101d9c | 2007-09-12 13:12:39 +0200 | [diff] [blame] | 256 | fio_ro_check(td, io_u); |
| 257 | |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 258 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
| 259 | io_u->flags |= IO_U_F_FLIGHT; |
| 260 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 261 | assert(fio_file_open(io_u->file)); |
Jens Axboe | 3d7b485 | 2007-03-13 14:50:28 +0100 | [diff] [blame] | 262 | |
Jens Axboe | 1178680 | 2007-03-05 18:33:22 +0100 | [diff] [blame] | 263 | io_u->error = 0; |
| 264 | io_u->resid = 0; |
| 265 | |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 266 | if (td->io_ops->flags & FIO_SYNCIO) { |
Jens Axboe | 12d9d84 | 2008-10-16 21:26:10 +0200 | [diff] [blame] | 267 | if (fio_fill_issue_time(td)) |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 268 | fio_gettime(&io_u->issue_time, NULL); |
Jens Axboe | d0c1532 | 2008-10-16 20:33:51 +0200 | [diff] [blame] | 269 | |
| 270 | /* |
| 271 | * only used for iolog |
| 272 | */ |
| 273 | if (td->o.read_iolog_file) |
| 274 | memcpy(&td->last_issue, &io_u->issue_time, |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 275 | sizeof(struct timeval)); |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 276 | } |
| 277 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 278 | if (ddir_rw(io_u->ddir)) |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 279 | td->io_issues[io_u->ddir]++; |
| 280 | |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 281 | ret = td->io_ops->queue(td, io_u); |
Jens Axboe | 5aeb77d | 2007-02-20 11:34:54 +0100 | [diff] [blame] | 282 | |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 283 | unlock_file(td, io_u->file); |
Jens Axboe | b2bd2bd | 2008-03-01 18:19:52 +0100 | [diff] [blame] | 284 | |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 285 | /* |
| 286 | * Add warning for O_DIRECT so that users have an easier time |
| 287 | * spotting potentially bad alignment. If this triggers for the first |
| 288 | * IO, then it's likely an alignment problem or because the host fs |
| 289 | * does not support O_DIRECT |
| 290 | */ |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 291 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 292 | td->o.odirect) { |
Dan Ehrenberg | 214ac7e | 2012-03-15 14:44:26 +0100 | [diff] [blame] | 293 | |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 294 | log_info("fio: first direct IO errored. File system may not " |
| 295 | "support direct IO, or iomem_align= is bad.\n"); |
| 296 | } |
| 297 | |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 298 | if (!td->io_ops->commit || ddir_trim(io_u->ddir)) { |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 299 | io_u_mark_submit(td, 1); |
| 300 | io_u_mark_complete(td, 1); |
| 301 | } |
| 302 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 303 | if (ret == FIO_Q_COMPLETED) { |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 304 | if (ddir_rw(io_u->ddir)) { |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 305 | io_u_mark_depth(td, 1); |
| 306 | td->ts.total_io_u[io_u->ddir]++; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 307 | } |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 308 | } else if (ret == FIO_Q_QUEUED) { |
Jens Axboe | eb7c8ae | 2007-02-26 14:45:12 +0100 | [diff] [blame] | 309 | int r; |
| 310 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 311 | if (ddir_rw(io_u->ddir)) { |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 312 | td->io_u_queued++; |
| 313 | td->ts.total_io_u[io_u->ddir]++; |
| 314 | } |
| 315 | |
| 316 | if (td->io_u_queued >= td->o.iodepth_batch) { |
Jens Axboe | eb7c8ae | 2007-02-26 14:45:12 +0100 | [diff] [blame] | 317 | r = td_io_commit(td); |
| 318 | if (r < 0) |
| 319 | return r; |
| 320 | } |
| 321 | } |
Jens Axboe | cb5ab51 | 2007-02-26 12:57:09 +0100 | [diff] [blame] | 322 | |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 323 | if ((td->io_ops->flags & FIO_SYNCIO) == 0) { |
Jens Axboe | 12d9d84 | 2008-10-16 21:26:10 +0200 | [diff] [blame] | 324 | if (fio_fill_issue_time(td)) |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 325 | fio_gettime(&io_u->issue_time, NULL); |
Jens Axboe | d0c1532 | 2008-10-16 20:33:51 +0200 | [diff] [blame] | 326 | |
| 327 | /* |
| 328 | * only used for iolog |
| 329 | */ |
| 330 | if (td->o.read_iolog_file) |
| 331 | memcpy(&td->last_issue, &io_u->issue_time, |
| 332 | sizeof(struct timeval)); |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 333 | } |
| 334 | |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 335 | return ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 336 | } |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 337 | |
| 338 | int td_io_init(struct thread_data *td) |
| 339 | { |
Jens Axboe | eeb1216 | 2007-03-20 10:47:45 +0100 | [diff] [blame] | 340 | int ret = 0; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 341 | |
Jens Axboe | eeb1216 | 2007-03-20 10:47:45 +0100 | [diff] [blame] | 342 | if (td->io_ops->init) { |
| 343 | ret = td->io_ops->init(td); |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 344 | if (ret && td->o.iodepth > 1) { |
| 345 | log_err("fio: io engine init failed. Perhaps try" |
| 346 | " reducing io depth?\n"); |
| 347 | } |
Jens Axboe | 7c97389 | 2011-01-22 15:11:03 -0700 | [diff] [blame] | 348 | if (!td->error) |
| 349 | td->error = ret; |
Jens Axboe | eeb1216 | 2007-03-20 10:47:45 +0100 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | return ret; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 353 | } |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 354 | |
| 355 | int td_io_commit(struct thread_data *td) |
| 356 | { |
Jens Axboe | f3e11d0 | 2010-03-18 19:31:06 +0100 | [diff] [blame] | 357 | int ret; |
| 358 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 359 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
| 360 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 361 | if (!td->cur_depth || !td->io_u_queued) |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 362 | return 0; |
Jens Axboe | cb5ab51 | 2007-02-26 12:57:09 +0100 | [diff] [blame] | 363 | |
Jens Axboe | 3c3ed07 | 2012-03-27 09:12:39 +0200 | [diff] [blame] | 364 | io_u_mark_depth(td, td->io_u_queued); |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 365 | |
Jens Axboe | f3e11d0 | 2010-03-18 19:31:06 +0100 | [diff] [blame] | 366 | if (td->io_ops->commit) { |
| 367 | ret = td->io_ops->commit(td); |
| 368 | if (ret) |
| 369 | td_verror(td, -ret, "io commit"); |
| 370 | } |
Jens Axboe | 3c3ed07 | 2012-03-27 09:12:39 +0200 | [diff] [blame] | 371 | |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 372 | /* |
| 373 | * Reflect that events were submitted as async IO requests. |
| 374 | */ |
| 375 | td->io_u_in_flight += td->io_u_queued; |
| 376 | td->io_u_queued = 0; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 377 | |
| 378 | return 0; |
| 379 | } |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 380 | |
| 381 | int td_io_open_file(struct thread_data *td, struct fio_file *f) |
| 382 | { |
Jens Axboe | 22a57ba | 2009-06-09 14:34:35 +0200 | [diff] [blame] | 383 | assert(!fio_file_open(f)); |
| 384 | assert(f->fd == -1); |
| 385 | |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 386 | if (td->io_ops->open_file(td, f)) { |
| 387 | if (td->error == EINVAL && td->o.odirect) |
| 388 | log_err("fio: destination does not support O_DIRECT\n"); |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 389 | if (td->error == EMFILE) { |
| 390 | log_err("fio: try reducing/setting openfiles (failed" |
| 391 | " at %u of %u)\n", td->nr_open_files, |
| 392 | td->o.nr_files); |
| 393 | } |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 394 | |
Jens Axboe | 22a57ba | 2009-06-09 14:34:35 +0200 | [diff] [blame] | 395 | assert(f->fd == -1); |
| 396 | assert(!fio_file_open(f)); |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 397 | return 1; |
Jens Axboe | 7bb48f8 | 2007-03-27 15:30:28 +0200 | [diff] [blame] | 398 | } |
Jens Axboe | a978ba6 | 2007-03-08 14:29:03 +0100 | [diff] [blame] | 399 | |
Jens Axboe | d5707a3 | 2008-06-04 15:13:02 +0200 | [diff] [blame] | 400 | fio_file_reset(f); |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 401 | fio_file_set_open(f); |
| 402 | fio_file_clear_closing(f); |
Jens Axboe | c97bd0f | 2009-05-27 13:11:20 +0200 | [diff] [blame] | 403 | disk_util_inc(f->du); |
Jens Axboe | d5707a3 | 2008-06-04 15:13:02 +0200 | [diff] [blame] | 404 | |
| 405 | td->nr_open_files++; |
| 406 | get_file(f); |
| 407 | |
Jens Axboe | 6615982 | 2007-04-16 21:54:24 +0200 | [diff] [blame] | 408 | if (f->filetype == FIO_TYPE_PIPE) { |
| 409 | if (td_random(td)) { |
| 410 | log_err("fio: can't seek on pipes (no random io)\n"); |
| 411 | goto err; |
| 412 | } |
| 413 | } |
| 414 | |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 415 | if (td->io_ops->flags & FIO_DISKLESSIO) |
| 416 | goto done; |
| 417 | |
| 418 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) |
| 419 | goto err; |
| 420 | |
Jens Axboe | 6615982 | 2007-04-16 21:54:24 +0200 | [diff] [blame] | 421 | if (td->o.fadvise_hint && |
| 422 | (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) { |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 423 | int flags; |
| 424 | |
| 425 | if (td_random(td)) |
| 426 | flags = POSIX_FADV_RANDOM; |
| 427 | else |
| 428 | flags = POSIX_FADV_SEQUENTIAL; |
| 429 | |
Bruce Cran | ecc314b | 2011-01-04 10:59:30 +0100 | [diff] [blame] | 430 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 431 | td_verror(td, errno, "fadvise"); |
| 432 | goto err; |
| 433 | } |
| 434 | } |
| 435 | |
Jens Axboe | e116f2b | 2008-06-04 15:14:24 +0200 | [diff] [blame] | 436 | #ifdef FIO_OS_DIRECTIO |
| 437 | /* |
| 438 | * Some OS's have a distinct call to mark the file non-buffered, |
| 439 | * instead of using O_DIRECT (Solaris) |
| 440 | */ |
| 441 | if (td->o.odirect) { |
| 442 | int ret = fio_set_odirect(f->fd); |
| 443 | |
| 444 | if (ret) { |
| 445 | td_verror(td, ret, "fio_set_odirect"); |
Jens Axboe | 78e51c7 | 2010-11-23 11:12:39 +0100 | [diff] [blame] | 446 | log_err("fio: the file system does not seem to support direct IO\n"); |
Jens Axboe | e116f2b | 2008-06-04 15:14:24 +0200 | [diff] [blame] | 447 | goto err; |
| 448 | } |
| 449 | } |
| 450 | #endif |
| 451 | |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 452 | done: |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 453 | log_file(td, f, FIO_LOG_OPEN_FILE); |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 454 | return 0; |
| 455 | err: |
Jens Axboe | c97bd0f | 2009-05-27 13:11:20 +0200 | [diff] [blame] | 456 | disk_util_dec(f->du); |
Jens Axboe | b284075 | 2007-04-12 12:57:27 +0200 | [diff] [blame] | 457 | if (td->io_ops->close_file) |
| 458 | td->io_ops->close_file(td, f); |
Jens Axboe | 7bb48f8 | 2007-03-27 15:30:28 +0200 | [diff] [blame] | 459 | return 1; |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 460 | } |
| 461 | |
Jens Axboe | 6977bcd | 2008-03-01 15:55:36 +0100 | [diff] [blame] | 462 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 463 | { |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 464 | if (!fio_file_closing(f)) |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 465 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
| 466 | |
Jens Axboe | 0ad920e | 2007-03-13 11:06:45 +0100 | [diff] [blame] | 467 | /* |
| 468 | * mark as closing, do real close when last io on it has completed |
| 469 | */ |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 470 | fio_file_set_closing(f); |
Jens Axboe | 0ad920e | 2007-03-13 11:06:45 +0100 | [diff] [blame] | 471 | |
Jens Axboe | c97bd0f | 2009-05-27 13:11:20 +0200 | [diff] [blame] | 472 | disk_util_dec(f->du); |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 473 | unlock_file_all(td, f); |
Jens Axboe | 29c1349 | 2008-03-01 19:25:20 +0100 | [diff] [blame] | 474 | |
Jens Axboe | 6977bcd | 2008-03-01 15:55:36 +0100 | [diff] [blame] | 475 | return put_file(td, f); |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 476 | } |
Jens Axboe | df9c26b | 2009-03-05 10:13:58 +0100 | [diff] [blame] | 477 | |
| 478 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
| 479 | { |
| 480 | if (!td->io_ops->get_file_size) |
| 481 | return 0; |
| 482 | |
| 483 | return td->io_ops->get_file_size(td, f); |
| 484 | } |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 485 | |
Jens Axboe | 0a28ecd | 2010-03-09 21:40:38 +0100 | [diff] [blame] | 486 | static int do_sync_file_range(struct thread_data *td, struct fio_file *f) |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 487 | { |
| 488 | off64_t offset, nbytes; |
| 489 | |
| 490 | offset = f->first_write; |
| 491 | nbytes = f->last_write - f->first_write; |
| 492 | |
Jens Axboe | 3843deb | 2010-03-09 20:41:15 +0100 | [diff] [blame] | 493 | if (!nbytes) |
| 494 | return 0; |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 495 | |
Jens Axboe | 3843deb | 2010-03-09 20:41:15 +0100 | [diff] [blame] | 496 | return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range); |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 497 | } |
Jens Axboe | 0a28ecd | 2010-03-09 21:40:38 +0100 | [diff] [blame] | 498 | |
| 499 | int do_io_u_sync(struct thread_data *td, struct io_u *io_u) |
| 500 | { |
| 501 | int ret; |
| 502 | |
| 503 | if (io_u->ddir == DDIR_SYNC) { |
| 504 | ret = fsync(io_u->file->fd); |
| 505 | } else if (io_u->ddir == DDIR_DATASYNC) { |
| 506 | #ifdef FIO_HAVE_FDATASYNC |
| 507 | ret = fdatasync(io_u->file->fd); |
| 508 | #else |
| 509 | ret = io_u->xfer_buflen; |
| 510 | io_u->error = EINVAL; |
| 511 | #endif |
| 512 | } else if (io_u->ddir == DDIR_SYNC_FILE_RANGE) |
| 513 | ret = do_sync_file_range(td, io_u->file); |
| 514 | else { |
| 515 | ret = io_u->xfer_buflen; |
| 516 | io_u->error = EINVAL; |
| 517 | } |
| 518 | |
Jens Axboe | cb849a7 | 2010-03-09 21:44:55 +0100 | [diff] [blame] | 519 | if (ret < 0) |
| 520 | io_u->error = errno; |
| 521 | |
Jens Axboe | 0a28ecd | 2010-03-09 21:40:38 +0100 | [diff] [blame] | 522 | return ret; |
| 523 | } |
Jens Axboe | a5f3027 | 2010-07-19 16:19:55 -0600 | [diff] [blame] | 524 | |
| 525 | int do_io_u_trim(struct thread_data *td, struct io_u *io_u) |
| 526 | { |
| 527 | #ifndef FIO_HAVE_TRIM |
| 528 | io_u->error = EINVAL; |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 529 | return 0; |
Jens Axboe | a5f3027 | 2010-07-19 16:19:55 -0600 | [diff] [blame] | 530 | #else |
| 531 | struct fio_file *f = io_u->file; |
| 532 | int ret; |
| 533 | |
Jens Axboe | c6404a4 | 2010-09-24 19:36:34 +0200 | [diff] [blame] | 534 | ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen); |
Jens Axboe | a5f3027 | 2010-07-19 16:19:55 -0600 | [diff] [blame] | 535 | if (!ret) |
Jens Axboe | 3c3ed07 | 2012-03-27 09:12:39 +0200 | [diff] [blame] | 536 | return io_u->xfer_buflen; |
Jens Axboe | a5f3027 | 2010-07-19 16:19:55 -0600 | [diff] [blame] | 537 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 538 | io_u->error = ret; |
| 539 | return 0; |
Jens Axboe | a5f3027 | 2010-07-19 16:19:55 -0600 | [diff] [blame] | 540 | #endif |
| 541 | } |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 542 | |
| 543 | int fio_show_ioengine_help(const char *engine) |
| 544 | { |
| 545 | struct flist_head *entry; |
| 546 | struct thread_data td; |
| 547 | char *sep; |
| 548 | int ret = 1; |
| 549 | |
| 550 | if (!engine || !*engine) { |
| 551 | log_info("Available IO engines:\n"); |
| 552 | flist_for_each(entry, &engine_list) { |
| 553 | td.io_ops = flist_entry(entry, struct ioengine_ops, |
| 554 | list); |
| 555 | log_info("\t%s\n", td.io_ops->name); |
| 556 | } |
| 557 | return 0; |
| 558 | } |
| 559 | sep = strchr(engine, ','); |
| 560 | if (sep) { |
| 561 | *sep = 0; |
| 562 | sep++; |
| 563 | } |
| 564 | |
| 565 | memset(&td, 0, sizeof(td)); |
| 566 | |
| 567 | td.io_ops = load_ioengine(&td, engine); |
| 568 | if (!td.io_ops) { |
| 569 | log_info("IO engine %s not found\n", engine); |
| 570 | return 1; |
| 571 | } |
| 572 | |
| 573 | if (td.io_ops->options) |
| 574 | ret = show_cmd_help(td.io_ops->options, sep); |
| 575 | else |
| 576 | log_info("IO engine %s has no options\n", td.io_ops->name); |
| 577 | |
| 578 | free_ioengine(&td); |
| 579 | |
| 580 | return ret; |
| 581 | } |