blob: 235d74f64e1e3c9cfed9067d4ed75cff608e97eb [file] [log] [blame]
/*
* glusterfs engine
*
* IO engine using Glusterfs's gfapi sync interface
*
*/
#include "gfapi.h"
#define LAST_POS(f) ((f)->engine_data)
static int fio_gf_prep(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
struct gf_data *g = td->io_ops->data;
dprint(FD_FILE, "fio prep\n");
if (!ddir_rw(io_u->ddir))
return 0;
if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset)
return 0;
if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) {
td_verror(td, errno, "lseek");
return 1;
}
return 0;
}
static int fio_gf_queue(struct thread_data *td, struct io_u *io_u)
{
struct gf_data *g = td->io_ops->data;
int ret = 0;
dprint(FD_FILE, "fio queue len %lu\n", io_u->xfer_buflen);
fio_ro_check(td, io_u);
if (io_u->ddir == DDIR_READ)
ret = glfs_read(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0);
else if (io_u->ddir == DDIR_WRITE)
ret = glfs_write(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0);
else {
log_err("unsupported operation.\n");
return -EINVAL;
}
dprint(FD_FILE, "fio len %lu ret %d\n", io_u->xfer_buflen, ret);
if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir))
LAST_POS(io_u->file) = io_u->offset + ret;
if (ret != (int)io_u->xfer_buflen) {
if (ret >= 0) {
io_u->resid = io_u->xfer_buflen - ret;
io_u->error = 0;
return FIO_Q_COMPLETED;
} else
io_u->error = errno;
}
if (io_u->error) {
log_err("IO failed.\n");
td_verror(td, io_u->error, "xfer");
}
return FIO_Q_COMPLETED;
}
static struct ioengine_ops ioengine = {
.name = "gfapi",
.version = FIO_IOOPS_VERSION,
.init = fio_gf_setup,
.cleanup = fio_gf_cleanup,
.prep = fio_gf_prep,
.queue = fio_gf_queue,
.open_file = fio_gf_open_file,
.close_file = fio_gf_close_file,
.unlink_file = fio_gf_unlink_file,
.get_file_size = fio_gf_get_file_size,
.options = gfapi_options,
.option_struct_size = sizeof(struct gf_options),
.flags = FIO_SYNCIO | FIO_DISKLESSIO,
};
static void fio_init fio_gf_register(void)
{
register_ioengine(&ioengine);
}
static void fio_exit fio_gf_unregister(void)
{
unregister_ioengine(&ioengine);
}