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 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 25 | static bool check_engine_ops(struct ioengine_ops *ops) |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 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); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 30 | return true; |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 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); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 35 | return true; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | /* |
| 39 | * sync engines only need a ->queue() |
| 40 | */ |
| 41 | if (ops->flags & FIO_SYNCIO) |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 42 | return false; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 43 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 44 | if (!ops->event || !ops->getevents) { |
| 45 | log_err("%s: no event/getevents handler\n", ops->name); |
| 46 | return true; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 47 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 48 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 49 | return false; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 50 | } |
| 51 | |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 52 | void unregister_ioengine(struct ioengine_ops *ops) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 53 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 54 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 55 | flist_del(&ops->list); |
| 56 | INIT_FLIST_HEAD(&ops->list); |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 57 | } |
| 58 | |
Jens Axboe | b2fdda4 | 2007-02-20 20:52:51 +0100 | [diff] [blame] | 59 | void register_ioengine(struct ioengine_ops *ops) |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 60 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 61 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 62 | INIT_FLIST_HEAD(&ops->list); |
| 63 | flist_add_tail(&ops->list, &engine_list); |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | static struct ioengine_ops *find_ioengine(const char *name) |
| 67 | { |
| 68 | struct ioengine_ops *ops; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 69 | struct flist_head *entry; |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 70 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 71 | flist_for_each(entry, &engine_list) { |
| 72 | ops = flist_entry(entry, struct ioengine_ops, list); |
Jens Axboe | bc5b77a | 2007-02-28 09:32:54 +0100 | [diff] [blame] | 73 | if (!strcmp(name, ops->name)) |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 74 | return ops; |
| 75 | } |
| 76 | |
| 77 | return NULL; |
| 78 | } |
| 79 | |
| 80 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, |
| 81 | const char *engine_lib) |
| 82 | { |
| 83 | struct ioengine_ops *ops; |
| 84 | void *dlhandle; |
| 85 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 86 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
| 87 | |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 88 | dlerror(); |
| 89 | dlhandle = dlopen(engine_lib, RTLD_LAZY); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 90 | if (!dlhandle) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 91 | td_vmsg(td, -1, dlerror(), "dlopen"); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 92 | return NULL; |
| 93 | } |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 94 | |
Jens Axboe | da51c05 | 2006-11-07 16:02:11 +0100 | [diff] [blame] | 95 | /* |
| 96 | * Unlike the included modules, external engines should have a |
| 97 | * non-static ioengine structure that we can reference. |
| 98 | */ |
Dmitry Monakhov | 0abea0b | 2012-09-19 23:22:54 +0400 | [diff] [blame] | 99 | ops = dlsym(dlhandle, engine_lib); |
| 100 | if (!ops) |
| 101 | ops = dlsym(dlhandle, "ioengine"); |
Daniel Gollub | a807570 | 2014-02-12 21:23:31 -0700 | [diff] [blame] | 102 | |
| 103 | /* |
| 104 | * For some external engines (like C++ ones) it is not that trivial |
| 105 | * to provide a non-static ionengine structure that we can reference. |
| 106 | * Instead we call a method which allocates the required ioengine |
| 107 | * structure. |
| 108 | */ |
| 109 | if (!ops) { |
| 110 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); |
| 111 | |
| 112 | if (get_ioengine) |
| 113 | get_ioengine(&ops); |
| 114 | } |
| 115 | |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 116 | if (!ops) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 117 | td_vmsg(td, -1, dlerror(), "dlsym"); |
Jens Axboe | d4dbaaa | 2006-10-09 16:01:27 +0200 | [diff] [blame] | 118 | dlclose(dlhandle); |
| 119 | return NULL; |
| 120 | } |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 121 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 122 | td->io_ops_dlhandle = dlhandle; |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 123 | return ops; |
| 124 | } |
| 125 | |
| 126 | struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name) |
| 127 | { |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 128 | struct ioengine_ops *ops; |
| 129 | char engine[64]; |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 130 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 131 | dprint(FD_IO, "load ioengine %s\n", name); |
| 132 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 133 | engine[sizeof(engine) - 1] = '\0'; |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 134 | strncpy(engine, name, sizeof(engine) - 1); |
| 135 | |
| 136 | /* |
| 137 | * linux libaio has alias names, so convert to what we want |
| 138 | */ |
| 139 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) |
| 140 | strcpy(engine, "libaio"); |
| 141 | |
| 142 | ops = find_ioengine(engine); |
| 143 | if (!ops) |
| 144 | ops = dlopen_ioengine(td, name); |
| 145 | |
| 146 | if (!ops) { |
| 147 | log_err("fio: engine %s not loadable\n", name); |
Jens Axboe | b902ceb | 2006-10-09 16:11:45 +0200 | [diff] [blame] | 148 | return NULL; |
| 149 | } |
| 150 | |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 151 | /* |
| 152 | * Check that the required methods are there. |
| 153 | */ |
Jens Axboe | 5f35095 | 2006-11-07 15:20:59 +0100 | [diff] [blame] | 154 | if (check_engine_ops(ops)) |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 155 | return NULL; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 156 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 157 | return ops; |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 158 | } |
| 159 | |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 160 | /* |
| 161 | * For cleaning up an ioengine which never made it to init(). |
| 162 | */ |
| 163 | void free_ioengine(struct thread_data *td) |
| 164 | { |
| 165 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
| 166 | |
| 167 | if (td->eo && td->io_ops->options) { |
| 168 | options_free(td->io_ops->options, td->eo); |
| 169 | free(td->eo); |
| 170 | td->eo = NULL; |
| 171 | } |
| 172 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 173 | if (td->io_ops_dlhandle) |
| 174 | dlclose(td->io_ops_dlhandle); |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 175 | |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 176 | td->io_ops = NULL; |
| 177 | } |
| 178 | |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 179 | void close_ioengine(struct thread_data *td) |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 180 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 181 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); |
| 182 | |
Jens Axboe | 2992b05 | 2008-05-30 22:07:12 +0200 | [diff] [blame] | 183 | if (td->io_ops->cleanup) { |
Jens Axboe | 2866c82 | 2006-10-09 15:57:48 +0200 | [diff] [blame] | 184 | td->io_ops->cleanup(td); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 185 | td->io_ops_data = NULL; |
Jens Axboe | 2992b05 | 2008-05-30 22:07:12 +0200 | [diff] [blame] | 186 | } |
Jens Axboe | ebac465 | 2005-12-08 15:25:21 +0100 | [diff] [blame] | 187 | |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 188 | free_ioengine(td); |
Jens Axboe | b990b5c | 2006-09-14 09:48:22 +0200 | [diff] [blame] | 189 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 190 | |
| 191 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
| 192 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 193 | dprint_io_u(io_u, "prep"); |
Jens Axboe | 7101d9c | 2007-09-12 13:12:39 +0200 | [diff] [blame] | 194 | fio_ro_check(td, io_u); |
| 195 | |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 196 | lock_file(td, io_u->file, io_u->ddir); |
Jens Axboe | b2bd2bd | 2008-03-01 18:19:52 +0100 | [diff] [blame] | 197 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 198 | if (td->io_ops->prep) { |
| 199 | int ret = td->io_ops->prep(td, io_u); |
| 200 | |
| 201 | dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret); |
Jens Axboe | b2bd2bd | 2008-03-01 18:19:52 +0100 | [diff] [blame] | 202 | if (ret) |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 203 | unlock_file(td, io_u->file); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 204 | return ret; |
| 205 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
Jens Axboe | e7d2e61 | 2007-12-11 10:49:39 +0100 | [diff] [blame] | 210 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
Jens Axboe | 0cbbc39 | 2014-09-30 16:04:12 -0600 | [diff] [blame] | 211 | const struct timespec *t) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 212 | { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 213 | int r = 0; |
| 214 | |
Yufei Ren | a05d62b | 2012-03-15 14:44:47 +0100 | [diff] [blame] | 215 | /* |
| 216 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, |
| 217 | * server side gets a message from the client |
| 218 | * side that the task is finished, and |
| 219 | * td->done is set to 1 after td_io_commit(). In this case, |
| 220 | * there is no need to reap complete event in server side. |
| 221 | */ |
| 222 | if (td->done) |
| 223 | return 0; |
| 224 | |
Jens Axboe | face81b | 2007-02-26 10:40:03 +0100 | [diff] [blame] | 225 | if (min > 0 && td->io_ops->commit) { |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 226 | r = td->io_ops->commit(td); |
Jens Axboe | face81b | 2007-02-26 10:40:03 +0100 | [diff] [blame] | 227 | if (r < 0) |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 228 | goto out; |
Jens Axboe | face81b | 2007-02-26 10:40:03 +0100 | [diff] [blame] | 229 | } |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 230 | if (max > td->cur_depth) |
| 231 | max = td->cur_depth; |
| 232 | if (min > max) |
| 233 | max = min; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 234 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 235 | r = 0; |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 236 | if (max && td->io_ops->getevents) |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 237 | r = td->io_ops->getevents(td, min, max, t); |
| 238 | out: |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 239 | if (r >= 0) { |
| 240 | /* |
Jens Axboe | 3fd9efb | 2013-04-11 08:53:24 +0200 | [diff] [blame] | 241 | * Reflect that our submitted requests were retrieved with |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 242 | * whatever OS async calls are in the underlying engine. |
| 243 | */ |
| 244 | td->io_u_in_flight -= r; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 245 | io_u_mark_complete(td, r); |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 246 | } else |
Jens Axboe | 7c639b1 | 2010-03-19 08:48:05 +0100 | [diff] [blame] | 247 | td_verror(td, r, "get_events"); |
Jens Axboe | f3e11d0 | 2010-03-18 19:31:06 +0100 | [diff] [blame] | 248 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 249 | dprint(FD_IO, "getevents: %d\n", r); |
| 250 | return r; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | int td_io_queue(struct thread_data *td, struct io_u *io_u) |
| 254 | { |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 255 | const enum fio_ddir ddir = acct_ddir(io_u); |
| 256 | unsigned long buflen = io_u->xfer_buflen; |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 257 | int ret; |
| 258 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 259 | dprint_io_u(io_u, "queue"); |
Jens Axboe | 7101d9c | 2007-09-12 13:12:39 +0200 | [diff] [blame] | 260 | fio_ro_check(td, io_u); |
| 261 | |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 262 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 263 | io_u_set(td, io_u, IO_U_F_FLIGHT); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 264 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 265 | assert(fio_file_open(io_u->file)); |
Jens Axboe | 3d7b485 | 2007-03-13 14:50:28 +0100 | [diff] [blame] | 266 | |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 267 | /* |
| 268 | * If using a write iolog, store this entry. |
| 269 | */ |
| 270 | log_io_u(td, io_u); |
| 271 | |
Jens Axboe | 1178680 | 2007-03-05 18:33:22 +0100 | [diff] [blame] | 272 | io_u->error = 0; |
| 273 | io_u->resid = 0; |
| 274 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 275 | if (td_ioengine_flagged(td, FIO_SYNCIO)) { |
Jens Axboe | 12d9d84 | 2008-10-16 21:26:10 +0200 | [diff] [blame] | 276 | if (fio_fill_issue_time(td)) |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 277 | fio_gettime(&io_u->issue_time, NULL); |
Jens Axboe | d0c1532 | 2008-10-16 20:33:51 +0200 | [diff] [blame] | 278 | |
| 279 | /* |
| 280 | * only used for iolog |
| 281 | */ |
| 282 | if (td->o.read_iolog_file) |
| 283 | memcpy(&td->last_issue, &io_u->issue_time, |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 284 | sizeof(struct timeval)); |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 285 | } |
| 286 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 287 | if (ddir_rw(ddir)) { |
| 288 | td->io_issues[ddir]++; |
| 289 | td->io_issue_bytes[ddir] += buflen; |
| 290 | td->rate_io_issue_bytes[ddir] += buflen; |
Jens Axboe | 5d61d11 | 2015-01-16 10:03:11 -0700 | [diff] [blame] | 291 | } |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 292 | |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 293 | ret = td->io_ops->queue(td, io_u); |
Jens Axboe | 5aeb77d | 2007-02-20 11:34:54 +0100 | [diff] [blame] | 294 | |
Jens Axboe | 4d4e80f | 2008-03-04 10:18:56 +0100 | [diff] [blame] | 295 | unlock_file(td, io_u->file); |
Jens Axboe | b2bd2bd | 2008-03-01 18:19:52 +0100 | [diff] [blame] | 296 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 297 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
| 298 | td->io_issues[ddir]--; |
| 299 | td->io_issue_bytes[ddir] -= buflen; |
| 300 | td->rate_io_issue_bytes[ddir] -= buflen; |
| 301 | io_u_clear(td, io_u, IO_U_F_FLIGHT); |
Jens Axboe | 72d300c | 2015-01-16 10:06:02 -0700 | [diff] [blame] | 302 | } |
| 303 | |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 304 | /* |
Jens Axboe | 39a43d3 | 2013-04-17 19:20:28 +0200 | [diff] [blame] | 305 | * If an error was seen and the io engine didn't propagate it |
| 306 | * back to 'td', do so. |
| 307 | */ |
| 308 | if (io_u->error && !td->error) |
| 309 | td_verror(td, io_u->error, "td_io_queue"); |
| 310 | |
| 311 | /* |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 312 | * Add warning for O_DIRECT so that users have an easier time |
| 313 | * spotting potentially bad alignment. If this triggers for the first |
| 314 | * IO, then it's likely an alignment problem or because the host fs |
| 315 | * does not support O_DIRECT |
| 316 | */ |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 317 | 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] | 318 | td->o.odirect) { |
Dan Ehrenberg | 214ac7e | 2012-03-15 14:44:26 +0100 | [diff] [blame] | 319 | |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 320 | log_info("fio: first direct IO errored. File system may not " |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 321 | "support direct IO, or iomem_align= is bad. Try " |
| 322 | "setting direct=0.\n"); |
Jens Axboe | cb21168 | 2009-07-03 08:38:50 +0200 | [diff] [blame] | 323 | } |
| 324 | |
Jens Axboe | d4eb465 | 2014-11-10 15:40:24 -0700 | [diff] [blame] | 325 | if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) { |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 326 | io_u_mark_submit(td, 1); |
| 327 | io_u_mark_complete(td, 1); |
| 328 | } |
| 329 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 330 | if (ret == FIO_Q_COMPLETED) { |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 331 | if (ddir_rw(io_u->ddir)) { |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 332 | io_u_mark_depth(td, 1); |
| 333 | td->ts.total_io_u[io_u->ddir]++; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 334 | } |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 335 | } else if (ret == FIO_Q_QUEUED) { |
Jens Axboe | eb7c8ae | 2007-02-26 14:45:12 +0100 | [diff] [blame] | 336 | int r; |
| 337 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 338 | td->io_u_queued++; |
| 339 | |
| 340 | if (ddir_rw(io_u->ddir)) |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 341 | td->ts.total_io_u[io_u->ddir]++; |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 342 | |
| 343 | if (td->io_u_queued >= td->o.iodepth_batch) { |
Jens Axboe | eb7c8ae | 2007-02-26 14:45:12 +0100 | [diff] [blame] | 344 | r = td_io_commit(td); |
| 345 | if (r < 0) |
| 346 | return r; |
| 347 | } |
| 348 | } |
Jens Axboe | cb5ab51 | 2007-02-26 12:57:09 +0100 | [diff] [blame] | 349 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 350 | if (!td_ioengine_flagged(td, FIO_SYNCIO)) { |
Jens Axboe | 12d9d84 | 2008-10-16 21:26:10 +0200 | [diff] [blame] | 351 | if (fio_fill_issue_time(td)) |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 352 | fio_gettime(&io_u->issue_time, NULL); |
Jens Axboe | d0c1532 | 2008-10-16 20:33:51 +0200 | [diff] [blame] | 353 | |
| 354 | /* |
| 355 | * only used for iolog |
| 356 | */ |
| 357 | if (td->o.read_iolog_file) |
| 358 | memcpy(&td->last_issue, &io_u->issue_time, |
| 359 | sizeof(struct timeval)); |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 360 | } |
| 361 | |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 362 | return ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 363 | } |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 364 | |
| 365 | int td_io_init(struct thread_data *td) |
| 366 | { |
Jens Axboe | eeb1216 | 2007-03-20 10:47:45 +0100 | [diff] [blame] | 367 | int ret = 0; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 368 | |
Jens Axboe | eeb1216 | 2007-03-20 10:47:45 +0100 | [diff] [blame] | 369 | if (td->io_ops->init) { |
| 370 | ret = td->io_ops->init(td); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 371 | if (ret) |
| 372 | log_err("fio: io engine %s init failed.%s\n", |
| 373 | td->io_ops->name, |
| 374 | td->o.iodepth > 1 ? |
| 375 | " Perhaps try reducing io depth?" : ""); |
| 376 | else |
| 377 | td->io_ops_init = 1; |
Jens Axboe | 7c97389 | 2011-01-22 15:11:03 -0700 | [diff] [blame] | 378 | if (!td->error) |
| 379 | td->error = ret; |
Jens Axboe | eeb1216 | 2007-03-20 10:47:45 +0100 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | return ret; |
Jens Axboe | 8c16d84 | 2006-10-20 11:48:33 +0200 | [diff] [blame] | 383 | } |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 384 | |
| 385 | int td_io_commit(struct thread_data *td) |
| 386 | { |
Jens Axboe | f3e11d0 | 2010-03-18 19:31:06 +0100 | [diff] [blame] | 387 | int ret; |
| 388 | |
Jens Axboe | ee56ad5 | 2008-02-01 10:30:20 +0100 | [diff] [blame] | 389 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
| 390 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 391 | if (!td->cur_depth || !td->io_u_queued) |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 392 | return 0; |
Jens Axboe | cb5ab51 | 2007-02-26 12:57:09 +0100 | [diff] [blame] | 393 | |
Jens Axboe | 3fd9efb | 2013-04-11 08:53:24 +0200 | [diff] [blame] | 394 | io_u_mark_depth(td, td->io_u_queued); |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 395 | |
Jens Axboe | f3e11d0 | 2010-03-18 19:31:06 +0100 | [diff] [blame] | 396 | if (td->io_ops->commit) { |
| 397 | ret = td->io_ops->commit(td); |
| 398 | if (ret) |
| 399 | td_verror(td, -ret, "io commit"); |
| 400 | } |
Jens Axboe | 3fd9efb | 2013-04-11 08:53:24 +0200 | [diff] [blame] | 401 | |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 402 | /* |
| 403 | * Reflect that events were submitted as async IO requests. |
| 404 | */ |
| 405 | td->io_u_in_flight += td->io_u_queued; |
| 406 | td->io_u_queued = 0; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 407 | |
| 408 | return 0; |
| 409 | } |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 410 | |
| 411 | int td_io_open_file(struct thread_data *td, struct fio_file *f) |
| 412 | { |
Jens Axboe | 22a57ba | 2009-06-09 14:34:35 +0200 | [diff] [blame] | 413 | assert(!fio_file_open(f)); |
| 414 | assert(f->fd == -1); |
| 415 | |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 416 | if (td->io_ops->open_file(td, f)) { |
| 417 | if (td->error == EINVAL && td->o.odirect) |
| 418 | log_err("fio: destination does not support O_DIRECT\n"); |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 419 | if (td->error == EMFILE) { |
| 420 | log_err("fio: try reducing/setting openfiles (failed" |
| 421 | " at %u of %u)\n", td->nr_open_files, |
| 422 | td->o.nr_files); |
| 423 | } |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 424 | |
Jens Axboe | 22a57ba | 2009-06-09 14:34:35 +0200 | [diff] [blame] | 425 | assert(f->fd == -1); |
| 426 | assert(!fio_file_open(f)); |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 427 | return 1; |
Jens Axboe | 7bb48f8 | 2007-03-27 15:30:28 +0200 | [diff] [blame] | 428 | } |
Jens Axboe | a978ba6 | 2007-03-08 14:29:03 +0100 | [diff] [blame] | 429 | |
Jens Axboe | 33c4881 | 2013-01-21 09:46:06 -0700 | [diff] [blame] | 430 | fio_file_reset(td, f); |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 431 | fio_file_set_open(f); |
| 432 | fio_file_clear_closing(f); |
Jens Axboe | c97bd0f | 2009-05-27 13:11:20 +0200 | [diff] [blame] | 433 | disk_util_inc(f->du); |
Jens Axboe | d5707a3 | 2008-06-04 15:13:02 +0200 | [diff] [blame] | 434 | |
| 435 | td->nr_open_files++; |
| 436 | get_file(f); |
| 437 | |
Jens Axboe | 6615982 | 2007-04-16 21:54:24 +0200 | [diff] [blame] | 438 | if (f->filetype == FIO_TYPE_PIPE) { |
| 439 | if (td_random(td)) { |
| 440 | log_err("fio: can't seek on pipes (no random io)\n"); |
| 441 | goto err; |
| 442 | } |
| 443 | } |
| 444 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 445 | if (td_ioengine_flagged(td, FIO_DISKLESSIO)) |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 446 | goto done; |
| 447 | |
| 448 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) |
| 449 | goto err; |
| 450 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 451 | if (td->o.fadvise_hint != F_ADV_NONE && |
| 452 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 453 | int flags; |
| 454 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 455 | if (td->o.fadvise_hint == F_ADV_TYPE) { |
| 456 | if (td_random(td)) |
| 457 | flags = POSIX_FADV_RANDOM; |
| 458 | else |
| 459 | flags = POSIX_FADV_SEQUENTIAL; |
| 460 | } else if (td->o.fadvise_hint == F_ADV_RANDOM) |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 461 | flags = POSIX_FADV_RANDOM; |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 462 | else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 463 | flags = POSIX_FADV_SEQUENTIAL; |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 464 | else { |
| 465 | log_err("fio: unknown fadvise type %d\n", |
| 466 | td->o.fadvise_hint); |
| 467 | flags = POSIX_FADV_NORMAL; |
| 468 | } |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 469 | |
Bruce Cran | ecc314b | 2011-01-04 10:59:30 +0100 | [diff] [blame] | 470 | 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] | 471 | td_verror(td, errno, "fadvise"); |
| 472 | goto err; |
| 473 | } |
| 474 | } |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 475 | #ifdef FIO_HAVE_STREAMID |
| 476 | if (td->o.fadvise_stream && |
| 477 | (f->filetype == FIO_TYPE_BLOCK || f->filetype == FIO_TYPE_FILE)) { |
| 478 | off_t stream = td->o.fadvise_stream; |
| 479 | |
| 480 | if (posix_fadvise(f->fd, stream, f->io_size, POSIX_FADV_STREAMID) < 0) { |
| 481 | td_verror(td, errno, "fadvise streamid"); |
| 482 | goto err; |
| 483 | } |
| 484 | } |
| 485 | #endif |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 486 | |
Jens Axboe | e116f2b | 2008-06-04 15:14:24 +0200 | [diff] [blame] | 487 | #ifdef FIO_OS_DIRECTIO |
| 488 | /* |
| 489 | * Some OS's have a distinct call to mark the file non-buffered, |
| 490 | * instead of using O_DIRECT (Solaris) |
| 491 | */ |
| 492 | if (td->o.odirect) { |
| 493 | int ret = fio_set_odirect(f->fd); |
| 494 | |
| 495 | if (ret) { |
| 496 | td_verror(td, ret, "fio_set_odirect"); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 497 | if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */ |
| 498 | log_err("fio: doing directIO to RAW devices or ZFS not supported\n"); |
| 499 | } else { |
| 500 | log_err("fio: the file system does not seem to support direct IO\n"); |
| 501 | } |
| 502 | |
Jens Axboe | e116f2b | 2008-06-04 15:14:24 +0200 | [diff] [blame] | 503 | goto err; |
| 504 | } |
| 505 | } |
| 506 | #endif |
| 507 | |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 508 | done: |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 509 | log_file(td, f, FIO_LOG_OPEN_FILE); |
Jens Axboe | 413d669 | 2007-03-27 15:38:21 +0200 | [diff] [blame] | 510 | return 0; |
| 511 | err: |
Jens Axboe | c97bd0f | 2009-05-27 13:11:20 +0200 | [diff] [blame] | 512 | disk_util_dec(f->du); |
Jens Axboe | b284075 | 2007-04-12 12:57:27 +0200 | [diff] [blame] | 513 | if (td->io_ops->close_file) |
| 514 | td->io_ops->close_file(td, f); |
Jens Axboe | 7bb48f8 | 2007-03-27 15:30:28 +0200 | [diff] [blame] | 515 | return 1; |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 516 | } |
| 517 | |
Jens Axboe | 6977bcd | 2008-03-01 15:55:36 +0100 | [diff] [blame] | 518 | 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] | 519 | { |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 520 | if (!fio_file_closing(f)) |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 521 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
| 522 | |
Jens Axboe | 0ad920e | 2007-03-13 11:06:45 +0100 | [diff] [blame] | 523 | /* |
| 524 | * mark as closing, do real close when last io on it has completed |
| 525 | */ |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 526 | fio_file_set_closing(f); |
Jens Axboe | 0ad920e | 2007-03-13 11:06:45 +0100 | [diff] [blame] | 527 | |
Jens Axboe | c97bd0f | 2009-05-27 13:11:20 +0200 | [diff] [blame] | 528 | disk_util_dec(f->du); |
Jens Axboe | cba5243 | 2013-03-21 10:06:58 -0600 | [diff] [blame] | 529 | |
| 530 | if (td->o.file_lock_mode != FILE_LOCK_NONE) |
| 531 | unlock_file_all(td, f); |
Jens Axboe | 29c1349 | 2008-03-01 19:25:20 +0100 | [diff] [blame] | 532 | |
Jens Axboe | 6977bcd | 2008-03-01 15:55:36 +0100 | [diff] [blame] | 533 | return put_file(td, f); |
Jens Axboe | b5af829 | 2007-03-08 12:43:13 +0100 | [diff] [blame] | 534 | } |
Jens Axboe | df9c26b | 2009-03-05 10:13:58 +0100 | [diff] [blame] | 535 | |
Castor Fu | 9187a26 | 2014-08-19 09:28:53 -0700 | [diff] [blame] | 536 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
| 537 | { |
| 538 | if (td->io_ops->unlink_file) |
| 539 | return td->io_ops->unlink_file(td, f); |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 540 | else { |
| 541 | int ret; |
| 542 | |
| 543 | ret = unlink(f->file_name); |
| 544 | if (ret < 0) |
| 545 | return errno; |
| 546 | |
| 547 | return 0; |
| 548 | } |
Castor Fu | 9187a26 | 2014-08-19 09:28:53 -0700 | [diff] [blame] | 549 | } |
| 550 | |
Jens Axboe | df9c26b | 2009-03-05 10:13:58 +0100 | [diff] [blame] | 551 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
| 552 | { |
| 553 | if (!td->io_ops->get_file_size) |
| 554 | return 0; |
| 555 | |
| 556 | return td->io_ops->get_file_size(td, f); |
| 557 | } |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 558 | |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 559 | int fio_show_ioengine_help(const char *engine) |
| 560 | { |
| 561 | struct flist_head *entry; |
| 562 | struct thread_data td; |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 563 | struct ioengine_ops *io_ops; |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 564 | char *sep; |
| 565 | int ret = 1; |
| 566 | |
| 567 | if (!engine || !*engine) { |
| 568 | log_info("Available IO engines:\n"); |
| 569 | flist_for_each(entry, &engine_list) { |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 570 | io_ops = flist_entry(entry, struct ioengine_ops, list); |
| 571 | log_info("\t%s\n", io_ops->name); |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 572 | } |
| 573 | return 0; |
| 574 | } |
| 575 | sep = strchr(engine, ','); |
| 576 | if (sep) { |
| 577 | *sep = 0; |
| 578 | sep++; |
| 579 | } |
| 580 | |
| 581 | memset(&td, 0, sizeof(td)); |
| 582 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 583 | io_ops = load_ioengine(&td, engine); |
| 584 | if (!io_ops) { |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 585 | log_info("IO engine %s not found\n", engine); |
| 586 | return 1; |
| 587 | } |
| 588 | |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 589 | if (io_ops->options) |
| 590 | ret = show_cmd_help(io_ops->options, sep); |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 591 | else |
Elliott Hughes | eda3a60 | 2017-05-19 18:53:02 -0700 | [diff] [blame] | 592 | log_info("IO engine %s has no options\n", io_ops->name); |
Steven Lang | de890a1 | 2011-11-09 14:03:34 +0100 | [diff] [blame] | 593 | |
| 594 | free_ioengine(&td); |
| 595 | |
| 596 | return ret; |
| 597 | } |