cc47f094 |
1 | /* |
2 | * glusterfs engine |
3 | * |
4 | * IO engine using Glusterfs's gfapi async interface |
5 | * |
6 | */ |
7 | #include "gfapi.h" |
8 | |
9 | struct fio_gf_iou { |
10 | struct io_u *io_u; |
11 | int io_complete; |
12 | }; |
13 | |
14 | static struct io_u *fio_gf_event(struct thread_data *td, int event) |
15 | { |
16 | struct gf_data *gf_data = td->io_ops->data; |
17 | dprint(FD_IO, "%s\n", __FUNCTION__); |
18 | return gf_data->aio_events[event]; |
19 | } |
20 | |
21 | static int fio_gf_getevents(struct thread_data *td, unsigned int min, |
22 | unsigned int max, struct timespec *t) |
23 | { |
24 | struct gf_data *g = td->io_ops->data; |
25 | unsigned int events = 0; |
26 | struct io_u *io_u; |
27 | int i = 0; |
28 | struct fio_gf_iou *io = NULL; |
29 | |
30 | dprint(FD_IO, "%s\n", __FUNCTION__); |
31 | do { |
32 | io_u_qiter(&td->io_u_all, io_u, i) { |
33 | if (!(io_u->flags & IO_U_F_FLIGHT)) |
34 | continue; |
35 | |
36 | io = (struct fio_gf_iou *)io_u->engine_data; |
37 | |
38 | if (io && io->io_complete) { |
39 | io->io_complete = 0; |
40 | g->aio_events[events] = io_u; |
41 | events++; |
42 | } |
43 | |
44 | } |
45 | if (events < min) |
46 | usleep(100); |
47 | else |
48 | break; |
49 | |
50 | } while (1); |
51 | |
52 | return events; |
53 | } |
54 | |
55 | #define LAST_POS(f) ((f)->engine_data) |
56 | static int fio_gf_prep(struct thread_data *td, struct io_u *io_u) |
57 | { |
58 | struct fio_file *f = io_u->file; |
59 | struct gf_data *g = td->io_ops->data; |
60 | struct fio_gf_iou *io = NULL; |
61 | |
62 | dprint(FD_FILE, "fio prep\n"); |
63 | |
64 | io = malloc(sizeof(struct fio_gf_iou)); |
65 | if (!io){ |
66 | td_verror(td, errno, "malloc"); |
67 | return 1; |
68 | } |
69 | io->io_complete = 0; |
70 | io->io_u = io_u; |
71 | io_u->engine_data = io; |
72 | |
73 | g->aio_events = malloc(td->o.iodepth * sizeof(struct io_u *)); |
74 | if (!g->aio_events){ |
75 | td_verror(td, errno, "malloc"); |
76 | free(io); |
77 | return 1; |
78 | } |
79 | |
80 | memset(g->aio_events, 0, td->o.iodepth * sizeof(struct io_u *)); |
81 | |
82 | if (!ddir_rw(io_u->ddir)) |
83 | return 0; |
84 | |
85 | if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset) |
86 | return 0; |
87 | |
88 | if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) { |
89 | td_verror(td, errno, "lseek"); |
90 | return 1; |
91 | } |
92 | io = malloc(sizeof(struct fio_gf_iou)); |
93 | if (!io){ |
94 | td_verror(td, errno, "malloc"); |
95 | return 1; |
96 | } |
97 | |
98 | return 0; |
99 | } |
100 | |
101 | static void gf_async_cb(glfs_fd_t *fd, ssize_t ret, void *data) |
102 | { |
103 | struct io_u *io_u = (struct io_u *)data; |
104 | struct fio_gf_iou *iou = |
105 | (struct fio_gf_iou *)io_u->engine_data; |
106 | |
107 | dprint(FD_IO, "%s ret %lu\n", __FUNCTION__, ret); |
108 | iou->io_complete = 1; |
109 | } |
110 | |
111 | static int fio_gf_async_queue(struct thread_data fio_unused *td, struct io_u *io_u) |
112 | { |
113 | struct gf_data *g = td->io_ops->data; |
114 | int r = 0; |
115 | |
116 | fio_ro_check(td, io_u); |
117 | |
118 | if (io_u->ddir == DDIR_READ) |
119 | r = glfs_pread_async(g->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset, |
120 | 0, gf_async_cb, (void *)io_u); |
121 | else if (io_u->ddir == DDIR_WRITE) |
122 | r = glfs_pread_async(g->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset, |
123 | 0, gf_async_cb, (void *)io_u); |
124 | else if (io_u->ddir == DDIR_SYNC) { |
125 | r = glfs_fsync_async(g->fd, gf_async_cb, (void *)io_u); |
126 | }else { |
127 | log_err("unsupported operation.\n"); |
128 | io_u->error = -EINVAL; |
129 | goto failed; |
130 | } |
131 | if (r){ |
132 | log_err("glfs failed.\n"); |
133 | io_u->error = r; |
134 | goto failed; |
135 | } |
136 | |
137 | return FIO_Q_QUEUED; |
138 | |
139 | failed: |
140 | io_u->error = r; |
141 | td_verror(td, io_u->error, "xfer"); |
142 | return FIO_Q_COMPLETED; |
143 | } |
144 | |
145 | |
146 | static struct ioengine_ops ioengine = { |
147 | .name = "gfapi_async", |
148 | .version = FIO_IOOPS_VERSION, |
149 | .init = fio_gf_setup, |
150 | .cleanup = fio_gf_cleanup, |
151 | .prep = fio_gf_prep, |
152 | .queue = fio_gf_async_queue, |
153 | .open_file = fio_gf_open_file, |
154 | .close_file = fio_gf_close_file, |
155 | .get_file_size = fio_gf_get_file_size, |
156 | .getevents = fio_gf_getevents, |
157 | .event = fio_gf_event, |
158 | .options = gfapi_options, |
159 | .option_struct_size = sizeof(struct gf_options), |
160 | .flags = FIO_DISKLESSIO, |
161 | }; |
162 | |
163 | static void fio_init fio_gf_register(void) |
164 | { |
165 | register_ioengine(&ioengine); |
166 | } |
167 | |
168 | static void fio_exit fio_gf_unregister(void) |
169 | { |
170 | unregister_ioengine(&ioengine); |
171 | } |