1 /*
2 * glusterfs engine
3 *
4 * IO engine using Glusterfs's gfapi sync interface
5 *
6 */
7
8 #include "gfapi.h"
9
10 #define LAST_POS(f) ((f)->engine_pos)
fio_gf_prep(struct thread_data * td,struct io_u * io_u)11 static int fio_gf_prep(struct thread_data *td, struct io_u *io_u)
12 {
13 struct fio_file *f = io_u->file;
14 struct gf_data *g = td->io_ops_data;
15
16 dprint(FD_FILE, "fio prep\n");
17
18 if (!ddir_rw(io_u->ddir))
19 return 0;
20
21 if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset)
22 return 0;
23
24 if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) {
25 td_verror(td, errno, "lseek");
26 return 1;
27 }
28
29 return 0;
30 }
31
fio_gf_queue(struct thread_data * td,struct io_u * io_u)32 static enum fio_q_status fio_gf_queue(struct thread_data *td, struct io_u *io_u)
33 {
34 struct gf_data *g = td->io_ops_data;
35 int ret = 0;
36
37 dprint(FD_FILE, "fio queue len %llu\n", io_u->xfer_buflen);
38 fio_ro_check(td, io_u);
39
40 if (io_u->ddir == DDIR_READ)
41 ret = glfs_read(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0);
42 else if (io_u->ddir == DDIR_WRITE)
43 ret = glfs_write(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0);
44 else if (io_u->ddir == DDIR_SYNC)
45 #if defined(CONFIG_GF_NEW_API)
46 ret = glfs_fsync(g->fd, NULL, NULL);
47 #else
48 ret = glfs_fsync(g->fd);
49 #endif
50 else if (io_u->ddir == DDIR_DATASYNC)
51 #if defined(CONFIG_GF_NEW_API)
52 ret = glfs_fdatasync(g->fd, NULL, NULL);
53 #else
54 ret = glfs_fdatasync(g->fd);
55 #endif
56 else {
57 log_err("unsupported operation.\n");
58 io_u->error = EINVAL;
59 return FIO_Q_COMPLETED;
60 }
61 dprint(FD_FILE, "fio len %llu ret %d\n", io_u->xfer_buflen, ret);
62 if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir))
63 LAST_POS(io_u->file) = io_u->offset + ret;
64
65 if (ret != (int)io_u->xfer_buflen) {
66 if (ret >= 0) {
67 io_u->resid = io_u->xfer_buflen - ret;
68 io_u->error = 0;
69 return FIO_Q_COMPLETED;
70 } else
71 io_u->error = errno;
72 }
73
74 if (io_u->error) {
75 log_err("IO failed.\n");
76 td_verror(td, io_u->error, "xfer");
77 }
78
79 return FIO_Q_COMPLETED;
80
81 }
82
83 static struct ioengine_ops ioengine = {
84 .name = "gfapi",
85 .version = FIO_IOOPS_VERSION,
86 .init = fio_gf_setup,
87 .cleanup = fio_gf_cleanup,
88 .prep = fio_gf_prep,
89 .queue = fio_gf_queue,
90 .open_file = fio_gf_open_file,
91 .close_file = fio_gf_close_file,
92 .unlink_file = fio_gf_unlink_file,
93 .get_file_size = fio_gf_get_file_size,
94 .options = gfapi_options,
95 .option_struct_size = sizeof(struct gf_options),
96 .flags = FIO_SYNCIO | FIO_DISKLESSIO,
97 };
98
fio_gf_register(void)99 static void fio_init fio_gf_register(void)
100 {
101 register_ioengine(&ioengine);
102 }
103
fio_gf_unregister(void)104 static void fio_exit fio_gf_unregister(void)
105 {
106 unregister_ioengine(&ioengine);
107 }
108