[fio.git] / engines / glusterfs.c

/*
 * glusterfs engine
 *
 * IO engine using Glusterfs's gfapi interface
 *
 */

#include <glusterfs/api/glfs.h>
#include <glusterfs/api/glfs-handles.h>
#include "../fio.h"

struct gf_options {
    struct thread_data *td;
    char *gf_vol;
    char *gf_brick;
};

struct gf_data {
    glfs_t *fs;
    glfs_fd_t *fd;
};

static struct fio_option options[] = {
    {
        .name     = "volume",
        .lname    = "Glusterfs volume",
        .type     = FIO_OPT_STR_STORE,
        .help     = "Name of the Glusterfs volume",
        .off1     = offsetof(struct gf_options, gf_vol),
        .category = FIO_OPT_C_ENGINE,
        .group    = FIO_OPT_G_GFAPI,
    },
    {
        .name     = "brick",
        .lname    = "Glusterfs brick name",
        .type     = FIO_OPT_STR_STORE,
        .help     = "Name of the Glusterfs brick to connect",
        .off1     = offsetof(struct gf_options, gf_brick),
        .category = FIO_OPT_C_ENGINE,
        .group    = FIO_OPT_G_GFAPI,
    },
    {
        .name = NULL,
    },
};

static int fio_gf_setup(struct thread_data *td)
{
	int r = 0;
	struct gf_data *g = NULL;
	struct gf_options *opt = td->eo;
    struct stat sb = {0, };

	dprint(FD_IO, "fio setup\n");

	if (td->io_ops->data)
	    return 0;

	g = malloc(sizeof(struct gf_data));
	if (!g){
	    log_err("malloc failed.\n");
	    return -ENOMEM;
	}
	g->fs = NULL; g->fd = NULL;

	g->fs = glfs_new (opt->gf_vol);
	if (!g->fs){
	    log_err("glfs_new failed.\n");
	    goto cleanup;
	}
	glfs_set_logging (g->fs, "/tmp/fio_gfapi.log", 7);
	/* default to tcp */
	r = glfs_set_volfile_server(g->fs, "tcp", opt->gf_brick, 0);
	if (r){
	    log_err("glfs_set_volfile_server failed.\n");
	    goto cleanup;
	}
	r = glfs_init(g->fs);
	if (r){
	    log_err("glfs_init failed. Is glusterd running on brick?\n");
	    goto cleanup;
	}
	sleep(2);
	r = glfs_lstat (g->fs, ".", &sb);
	if (r){
	    log_err("glfs_lstat failed.\n");
	    goto cleanup;
	}
	dprint(FD_FILE, "fio setup %p\n", g->fs);
	td->io_ops->data = g;
cleanup:
	if (r){
	    if (g){
            if (g->fs){
                glfs_fini(g->fs);
            }
            free(g);
	    }
	}
	return r;
}

static void fio_gf_cleanup(struct thread_data *td)
{
}

static int fio_gf_get_file_size(struct thread_data *td, struct fio_file *f)
{
    struct stat buf;
    int ret;
    struct gf_data *g = td->io_ops->data;

    dprint(FD_FILE, "get file size %s\n", f->file_name);

    if (!g || !g->fs)
    {
        return 0;
    }
    if (fio_file_size_known(f))
        return 0;

    ret = glfs_lstat (g->fs, f->file_name, &buf);
    if (ret < 0){
        log_err("glfs_lstat failed.\n");
        return ret;
    }

    f->real_file_size = buf.st_size;
    fio_file_set_size_known(f);

    return 0;

}

static int fio_gf_open_file(struct thread_data *td, struct fio_file *f)
{

    int flags = 0;
    int ret = 0;
    struct gf_data *g = td->io_ops->data;
    struct stat sb = {0, };

    if (td_write(td)) {
        if (!read_only)
            flags = O_RDWR;
    } else if (td_read(td)) {
        if (!read_only)
            flags = O_RDWR;
        else
            flags = O_RDONLY;
    }
    dprint(FD_FILE, "fio file %s open mode %s td rw %s\n", f->file_name,
           flags == O_RDONLY? "ro":"rw", td_read(td)? "read":"write");
    g->fd = glfs_creat(g->fs, f->file_name, flags, 0644);    
    if (!g->fd){
        log_err("glfs_creat failed.\n");
        ret = errno;
    }
    /* file for read doesn't exist or shorter than required, create/extend it */
    if (td_read(td)){
        if (glfs_lstat (g->fs, f->file_name, &sb) || sb.st_size < f->real_file_size){
            dprint(FD_FILE, "fio extend file %s from %ld to %ld\n", f->file_name, sb.st_size, f->real_file_size);
            ret = glfs_ftruncate (g->fd, f->real_file_size);
            if (ret){
                log_err("failed fio extend file %s to %ld\n", f->file_name, f->real_file_size);
            }else{
                unsigned long long left;
                unsigned int bs;
                char *b;
                int r;

                /* fill the file, copied from extend_file */
                b = malloc(td->o.max_bs[DDIR_WRITE]);

                left = f->real_file_size;
                while (left && !td->terminate) {
                    bs = td->o.max_bs[DDIR_WRITE];
                    if (bs > left)
                        bs = left;

                    fill_io_buffer(td, b, bs, bs);

                    r = glfs_write(g->fd, b, bs, 0);
                    dprint(FD_IO, "fio write %d of %ld file %s\n", r, f->real_file_size, f->file_name);

                    if (r > 0) {
                        left -= r;
                        continue;
                    } else {
                        if (r < 0) {
                            int __e = errno;

                            if (__e == ENOSPC) {
                                if (td->o.fill_device)
                                    break;
                                log_info("fio: ENOSPC on laying out "
                                         "file, stopping\n");
                                break;
                            }
                            td_verror(td, errno, "write");
                        } else
                            td_verror(td, EIO, "write");

                        break;
                    }
                }

                if (b) free(b);
                glfs_lseek(g->fd, 0, SEEK_SET);

                if (td->terminate) {
                    dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
                    unlink(f->file_name);
                } else if (td->o.create_fsync) {
                    if (glfs_fsync(g->fd) < 0) {
                        dprint(FD_FILE, "failed to sync, close %s\n", f->file_name);
                        td_verror(td, errno, "fsync");
                        glfs_close(g->fd);
                        g->fd = NULL;
                        return 1;
                    }
                }
            }
        }
    }
    dprint(FD_FILE, "fio %p created %s\n", g->fs, f->file_name);
    f->fd = -1;
    f->shadow_fd = -1;    

    return ret;
}

static int fio_gf_close_file(struct thread_data *td, struct fio_file *f)
{
	int ret = 0;
	struct gf_data *g = td->io_ops->data;

	dprint(FD_FILE, "fd close %s\n", f->file_name);

	if (g->fd && glfs_close(g->fd) < 0)
	    ret = errno;

	if (g->fs)
	    glfs_fini(g->fs);

	g->fd = NULL;
	free(g);
	td->io_ops->data = NULL;
	f->engine_data = 0;

	return ret;
}

#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,
	.get_file_size	= fio_gf_get_file_size,
	.options        = 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);
}
Commit	Line	Data
6e7d7dfb	1	/*
	2	* glusterfs engine
	3	*
	4	* IO engine using Glusterfs's gfapi interface
	5	*
	6	*/
	7
	8	#include <glusterfs/api/glfs.h>
7cb57176	9	#include <glusterfs/api/glfs-handles.h>
6e7d7dfb	10	#include "../fio.h"
	11
	12	struct gf_options {
	13	struct thread_data *td;
	14	char *gf_vol;
	15	char *gf_brick;
	16	};
	17
	18	struct gf_data {
	19	glfs_t *fs;
	20	glfs_fd_t *fd;
	21	};
7cb57176	22
6e7d7dfb	23	static struct fio_option options[] = {
6e7d7dfb	24	{
a7c386f4	25	.name = "volume",
	26	.lname = "Glusterfs volume",
	27	.type = FIO_OPT_STR_STORE,
	28	.help = "Name of the Glusterfs volume",
	29	.off1 = offsetof(struct gf_options, gf_vol),
	30	.category = FIO_OPT_C_ENGINE,
	31	.group = FIO_OPT_G_GFAPI,
6e7d7dfb	32	},
6e7d7dfb	33	{
a7c386f4	34	.name = "brick",
	35	.lname = "Glusterfs brick name",
	36	.type = FIO_OPT_STR_STORE,
	37	.help = "Name of the Glusterfs brick to connect",
	38	.off1 = offsetof(struct gf_options, gf_brick),
	39	.category = FIO_OPT_C_ENGINE,
	40	.group = FIO_OPT_G_GFAPI,
6e7d7dfb	41	},
6e7d7dfb	42	{
a7c386f4	43	.name = NULL,
6e7d7dfb	44	},
	45	};
	46
	47	static int fio_gf_setup(struct thread_data *td)
	48	{
	49	int r = 0;
	50	struct gf_data *g = NULL;
	51	struct gf_options *opt = td->eo;
a7c386f4	52	struct stat sb = {0, };
7cb57176	53
7cb57176	54	dprint(FD_IO, "fio setup\n");
6e7d7dfb	55
	56	if (td->io_ops->data)
	57	return 0;
	58
	59	g = malloc(sizeof(struct gf_data));
	60	if (!g){
	61	log_err("malloc failed.\n");
	62	return -ENOMEM;
	63	}
	64	g->fs = NULL; g->fd = NULL;
	65
	66	g->fs = glfs_new (opt->gf_vol);
	67	if (!g->fs){
	68	log_err("glfs_new failed.\n");
	69	goto cleanup;
	70	}
7cb57176	71	glfs_set_logging (g->fs, "/tmp/fio_gfapi.log", 7);
6e7d7dfb	72	/* default to tcp */
7cb57176	73	r = glfs_set_volfile_server(g->fs, "tcp", opt->gf_brick, 0);
6e7d7dfb	74	if (r){
	75	log_err("glfs_set_volfile_server failed.\n");
	76	goto cleanup;
	77	}
	78	r = glfs_init(g->fs);
	79	if (r){
7cb57176	80	log_err("glfs_init failed. Is glusterd running on brick?\n");
	81	goto cleanup;
	82	}
	83	sleep(2);
	84	r = glfs_lstat (g->fs, ".", &sb);
	85	if (r){
	86	log_err("glfs_lstat failed.\n");
6e7d7dfb	87	goto cleanup;
6e7d7dfb	88	}
7cb57176	89	dprint(FD_FILE, "fio setup %p\n", g->fs);
6e7d7dfb	90	td->io_ops->data = g;
6e7d7dfb	91	cleanup:
7cb57176	92	if (r){
7cb57176	93	if (g){
a7c386f4	94	if (g->fs){
	95	glfs_fini(g->fs);
	96	}
	97	free(g);
6e7d7dfb	98	}
6e7d7dfb	99	}
	100	return r;
	101	}
	102
	103	static void fio_gf_cleanup(struct thread_data *td)
	104	{
6e7d7dfb	105	}
	106
	107	static int fio_gf_get_file_size(struct thread_data td, struct fio_file f)
	108	{
	109	struct stat buf;
	110	int ret;
	111	struct gf_data *g = td->io_ops->data;
	112
6aa56500	113	dprint(FD_FILE, "get file size %s\n", f->file_name);
	114
	115	if (!g \|\| !g->fs)
	116	{
a7c386f4	117	return 0;
6aa56500	118	}
6e7d7dfb	119	if (fio_file_size_known(f))
a7c386f4	120	return 0;
6e7d7dfb	121
6e7d7dfb	122	ret = glfs_lstat (g->fs, f->file_name, &buf);
7cb57176	123	if (ret < 0){
a7c386f4	124	log_err("glfs_lstat failed.\n");
a7c386f4	125	return ret;
7cb57176	126	}
6e7d7dfb	127
	128	f->real_file_size = buf.st_size;
	129	fio_file_set_size_known(f);
	130
	131	return 0;
	132
	133	}
	134
	135	static int fio_gf_open_file(struct thread_data td, struct fio_file f)
	136	{
a8a93dee	137
7cb57176	138	int flags = 0;
	139	int ret = 0;
	140	struct gf_data *g = td->io_ops->data;
a7c386f4	141	struct stat sb = {0, };
6e7d7dfb	142
6e7d7dfb	143	if (td_write(td)) {
a7c386f4	144	if (!read_only)
a7c386f4	145	flags = O_RDWR;
6e7d7dfb	146	} else if (td_read(td)) {
a7c386f4	147	if (!read_only)
	148	flags = O_RDWR;
	149	else
	150	flags = O_RDONLY;
6e7d7dfb	151	}
a7c386f4	152	dprint(FD_FILE, "fio file %s open mode %s td rw %s\n", f->file_name,
	153	flags == O_RDONLY? "ro":"rw", td_read(td)? "read":"write");
	154	g->fd = glfs_creat(g->fs, f->file_name, flags, 0644);
7cb57176	155	if (!g->fd){
a7c386f4	156	log_err("glfs_creat failed.\n");
a7c386f4	157	ret = errno;
7cb57176	158	}
91b7a38d	159	/* file for read doesn't exist or shorter than required, create/extend it */
	160	if (td_read(td)){
	161	if (glfs_lstat (g->fs, f->file_name, &sb) \|\| sb.st_size < f->real_file_size){
	162	dprint(FD_FILE, "fio extend file %s from %ld to %ld\n", f->file_name, sb.st_size, f->real_file_size);
	163	ret = glfs_ftruncate (g->fd, f->real_file_size);
	164	if (ret){
	165	log_err("failed fio extend file %s to %ld\n", f->file_name, f->real_file_size);
	166	}else{
	167	unsigned long long left;
	168	unsigned int bs;
	169	char *b;
	170	int r;
	171
	172	/* fill the file, copied from extend_file */
	173	b = malloc(td->o.max_bs[DDIR_WRITE]);
	174
	175	left = f->real_file_size;
	176	while (left && !td->terminate) {
	177	bs = td->o.max_bs[DDIR_WRITE];
	178	if (bs > left)
	179	bs = left;
	180
	181	fill_io_buffer(td, b, bs, bs);
	182
	183	r = glfs_write(g->fd, b, bs, 0);
	184	dprint(FD_IO, "fio write %d of %ld file %s\n", r, f->real_file_size, f->file_name);
	185
	186	if (r > 0) {
	187	left -= r;
	188	continue;
	189	} else {
	190	if (r < 0) {
	191	int __e = errno;
	192
	193	if (__e == ENOSPC) {
	194	if (td->o.fill_device)
	195	break;
	196	log_info("fio: ENOSPC on laying out "
	197	"file, stopping\n");
	198	break;
	199	}
	200	td_verror(td, errno, "write");
	201	} else
	202	td_verror(td, EIO, "write");
	203
	204	break;
	205	}
	206	}
	207
	208	if (b) free(b);
	209	glfs_lseek(g->fd, 0, SEEK_SET);
	210
	211	if (td->terminate) {
	212	dprint(FD_FILE, "terminate unlink %s\n", f->file_name);
	213	unlink(f->file_name);
	214	} else if (td->o.create_fsync) {
	215	if (glfs_fsync(g->fd) < 0) {
	216	dprint(FD_FILE, "failed to sync, close %s\n", f->file_name);
	217	td_verror(td, errno, "fsync");
	218	glfs_close(g->fd);
	219	g->fd = NULL;
	220	return 1;
	221	}
	222	}
223	}
a7c386f4	224	}
a7c386f4	225	}
7cb57176	226	dprint(FD_FILE, "fio %p created %s\n", g->fs, f->file_name);
a8a93dee	227	f->fd = -1;
7cb57176	228	f->shadow_fd = -1;
	229
	230	return ret;
6e7d7dfb	231	}
	232
	233	static int fio_gf_close_file(struct thread_data td, struct fio_file f)
	234	{
	235	int ret = 0;
	236	struct gf_data *g = td->io_ops->data;
	237
	238	dprint(FD_FILE, "fd close %s\n", f->file_name);
	239
7cb57176	240	if (g->fd && glfs_close(g->fd) < 0)
	241	ret = errno;
	242
	243	if (g->fs)
	244	glfs_fini(g->fs);
6e7d7dfb	245
6e7d7dfb	246	g->fd = NULL;
7cb57176	247	free(g);
7cb57176	248	td->io_ops->data = NULL;
6e7d7dfb	249	f->engine_data = 0;
	250
	251	return ret;
	252	}
	253
	254	#define LAST_POS(f) ((f)->engine_data)
	255	static int fio_gf_prep(struct thread_data td, struct io_u io_u)
	256	{
	257	struct fio_file *f = io_u->file;
	258	struct gf_data *g = td->io_ops->data;
	259
7cb57176	260	dprint(FD_FILE, "fio prep\n");
7cb57176	261
6e7d7dfb	262	if (!ddir_rw(io_u->ddir))
	263	return 0;
	264
	265	if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset)
	266	return 0;
	267
	268	if (glfs_lseek(g->fd, io_u->offset, SEEK_SET) < 0) {
	269	td_verror(td, errno, "lseek");
	270	return 1;
	271	}
	272
	273	return 0;
	274	}
	275
	276	static int fio_gf_queue(struct thread_data td, struct io_u io_u)
	277	{
	278	struct gf_data *g = td->io_ops->data;
	279	int ret = 0;
	280
7cb57176	281	dprint(FD_FILE, "fio queue len %lu\n", io_u->xfer_buflen);
6e7d7dfb	282	fio_ro_check(td, io_u);
	283
	284	if (io_u->ddir == DDIR_READ)
a7c386f4	285	ret = glfs_read(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0);
6e7d7dfb	286	else if (io_u->ddir == DDIR_WRITE)
a7c386f4	287	ret = glfs_write(g->fd, io_u->xfer_buf, io_u->xfer_buflen, 0);
6e7d7dfb	288	else {
a7c386f4	289	log_err("unsupported operation.\n");
a7c386f4	290	return -EINVAL;
6e7d7dfb	291	}
a7c386f4	292	dprint(FD_FILE, "fio len %lu ret %d\n", io_u->xfer_buflen, ret);
6e7d7dfb	293	if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir))
a7c386f4	294	LAST_POS(io_u->file) = io_u->offset + ret;
6e7d7dfb	295
6e7d7dfb	296	if (ret != (int) io_u->xfer_buflen) {
a7c386f4	297	if (ret >= 0) {
	298	io_u->resid = io_u->xfer_buflen - ret;
	299	io_u->error = 0;
	300	return FIO_Q_COMPLETED;
	301	} else
	302	io_u->error = errno;
6e7d7dfb	303	}
6e7d7dfb	304
7cb57176	305	if (io_u->error){
a7c386f4	306	log_err("IO failed.\n");
a7c386f4	307	td_verror(td, io_u->error, "xfer");
7cb57176	308	}
6e7d7dfb	309
	310	return FIO_Q_COMPLETED;
	311
	312	}
	313
	314	static struct ioengine_ops ioengine = {
	315	.name = "gfapi",
	316	.version = FIO_IOOPS_VERSION,
a7c386f4	317	.init = fio_gf_setup,
a7c386f4	318	.cleanup = fio_gf_cleanup,
6e7d7dfb	319	.prep = fio_gf_prep,
	320	.queue = fio_gf_queue,
	321	.open_file = fio_gf_open_file,
	322	.close_file = fio_gf_close_file,
a7c386f4	323	.get_file_size = fio_gf_get_file_size,
a7c386f4	324	.options = options,
6e7d7dfb	325	.option_struct_size = sizeof(struct gf_options),
7cb57176	326	.flags = FIO_SYNCIO \| FIO_DISKLESSIO,
6e7d7dfb	327	};
	328
	329	static void fio_init fio_gf_register(void)
	330	{
	331	register_ioengine(&ioengine);
	332	}
	333
	334	static void fio_exit fio_gf_unregister(void)
	335	{
	336	unregister_ioengine(&ioengine);
	337	}