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_data)
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 int 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 %lu\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 ret = glfs_fsync(g->fd);
46 else if (io_u->ddir == DDIR_DATASYNC)
47 ret = glfs_fdatasync(g->fd);
48 else {
49 log_err("unsupported operation.\n");
50 return -EINVAL;
51 }
52 dprint(FD_FILE, "fio len %lu ret %d\n", io_u->xfer_buflen, ret);
53 if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir))
54 LAST_POS(io_u->file) = io_u->offset + ret;
55
56 if (ret != (int)io_u->xfer_buflen) {
57 if (ret >= 0) {
58 io_u->resid = io_u->xfer_buflen - ret;
59 io_u->error = 0;
60 return FIO_Q_COMPLETED;
61 } else
62 io_u->error = errno;
63 }
64
65 if (io_u->error) {
66 log_err("IO failed.\n");
67 td_verror(td, io_u->error, "xfer");
68 }
69
70 return FIO_Q_COMPLETED;
71
72 }
73
74 static struct ioengine_ops ioengine = {
75 .name = "gfapi",
76 .version = FIO_IOOPS_VERSION,
77 .init = fio_gf_setup,
78 .cleanup = fio_gf_cleanup,
79 .prep = fio_gf_prep,
80 .queue = fio_gf_queue,
81 .open_file = fio_gf_open_file,
82 .close_file = fio_gf_close_file,
83 .unlink_file = fio_gf_unlink_file,
84 .get_file_size = fio_gf_get_file_size,
85 .options = gfapi_options,
86 .option_struct_size = sizeof(struct gf_options),
87 .flags = FIO_SYNCIO | FIO_DISKLESSIO,
88 };
89
fio_gf_register(void)90 static void fio_init fio_gf_register(void)
91 {
92 register_ioengine(&ioengine);
93 }
94
fio_gf_unregister(void)95 static void fio_exit fio_gf_unregister(void)
96 {
97 unregister_ioengine(&ioengine);
98 }
99