projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| cc47f094 | 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) | |
| 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 | ||
| 32 | static int fio_gf_queue(struct thread_data *td, struct io_u *io_u) | |
| 33 | { | |
| b29c813f JA |
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 { | |
| 45 | log_err("unsupported operation.\n"); | |
| 46 | return -EINVAL; | |
| 47 | } | |
| 48 | dprint(FD_FILE, "fio len %lu ret %d\n", io_u->xfer_buflen, ret); | |
| 49 | if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir)) | |
| 50 | LAST_POS(io_u->file) = io_u->offset + ret; | |
| 51 | ||
| 52 | if (ret != (int)io_u->xfer_buflen) { | |
| 53 | if (ret >= 0) { | |
| 54 | io_u->resid = io_u->xfer_buflen - ret; | |
| 55 | io_u->error = 0; | |
| 56 | return FIO_Q_COMPLETED; | |
| 57 | } else | |
| 58 | io_u->error = errno; | |
| 59 | } | |
| 60 | ||
| 61 | if (io_u->error) { | |
| 62 | log_err("IO failed.\n"); | |
| 63 | td_verror(td, io_u->error, "xfer"); | |
| 64 | } | |
| 65 | ||
| 66 | return FIO_Q_COMPLETED; | |
| cc47f094 | 67 | |
| 68 | } | |
| 69 | ||
| 70 | static struct ioengine_ops ioengine = { | |
| b29c813f JA |
71 | .name = "gfapi", |
| 72 | .version = FIO_IOOPS_VERSION, | |
| 73 | .init = fio_gf_setup, | |
| 74 | .cleanup = fio_gf_cleanup, | |
| 75 | .prep = fio_gf_prep, | |
| 76 | .queue = fio_gf_queue, | |
| 77 | .open_file = fio_gf_open_file, | |
| 78 | .close_file = fio_gf_close_file, | |
| 38ef9c90 | 79 | .unlink_file = fio_gf_unlink_file, |
| b29c813f JA |
80 | .get_file_size = fio_gf_get_file_size, |
| 81 | .options = gfapi_options, | |
| cc47f094 | 82 | .option_struct_size = sizeof(struct gf_options), |
| b29c813f | 83 | .flags = FIO_SYNCIO | FIO_DISKLESSIO, |
| cc47f094 | 84 | }; |
| 85 | ||
| 86 | static void fio_init fio_gf_register(void) | |
| 87 | { | |
| b29c813f | 88 | register_ioengine(&ioengine); |
| cc47f094 | 89 | } |
| 90 | ||
| 91 | static void fio_exit fio_gf_unregister(void) | |
| 92 | { | |
| b29c813f | 93 | unregister_ioengine(&ioengine); |
| cc47f094 | 94 | } |