4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/utils/liblustreapi.c
34 * Author: Peter J. Braam <braam@clusterfs.com>
35 * Author: Phil Schwan <phil@clusterfs.com>
36 * Author: Robert Read <rread@clusterfs.com>
50 #include <sys/ioctl.h>
57 #include <sys/statfs.h>
58 #include <sys/syscall.h>
60 #include <sys/types.h>
61 #include <sys/xattr.h>
64 #include <libgen.h> /* for dirname() */
65 #ifdef HAVE_LINUX_UNISTD_H
66 #include <linux/unistd.h>
72 #include <libcfs/util/ioctl.h>
73 #include <libcfs/util/param.h>
74 #include <libcfs/util/string.h>
75 #include <linux/lnet/lnetctl.h>
76 #include <lustre/lustreapi.h>
77 #include <linux/lustre/lustre_ostid.h>
78 #include <linux/lustre/lustre_ioctl.h>
79 #include "lustreapi_internal.h"
81 static int llapi_msg_level = LLAPI_MSG_MAX;
83 char *mdt_hash_name[] = { "none",
84 LMV_HASH_NAME_ALL_CHARS,
85 LMV_HASH_NAME_FNV_1A_64 };
87 void llapi_msg_set_level(int level)
89 /* ensure level is in the good range */
90 if (level < LLAPI_MSG_OFF)
91 llapi_msg_level = LLAPI_MSG_OFF;
92 else if (level > LLAPI_MSG_MAX)
93 llapi_msg_level = LLAPI_MSG_MAX;
95 llapi_msg_level = level;
98 int llapi_msg_get_level(void)
100 return llapi_msg_level;
103 static void error_callback_default(enum llapi_message_level level, int err,
104 const char *fmt, va_list ap)
106 vfprintf(stderr, fmt, ap);
107 if (level & LLAPI_MSG_NO_ERRNO)
108 fprintf(stderr, "\n");
110 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
113 static void info_callback_default(enum llapi_message_level level, int err,
114 const char *fmt, va_list ap)
116 vfprintf(stdout, fmt, ap);
119 static llapi_log_callback_t llapi_error_callback = error_callback_default;
120 static llapi_log_callback_t llapi_info_callback = info_callback_default;
123 /* llapi_error will preserve errno */
124 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
127 int tmp_errno = errno;
129 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
133 llapi_error_callback(level, abs(err), fmt, args);
138 /* llapi_printf will preserve errno */
139 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
142 int tmp_errno = errno;
144 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
148 llapi_info_callback(level, 0, fmt, args);
154 * Set a custom error logging function. Passing in NULL will reset the logging
155 * callback to its default value.
157 * This function returns the value of the old callback.
159 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
161 llapi_log_callback_t old = llapi_error_callback;
164 llapi_error_callback = cb;
166 llapi_error_callback = error_callback_default;
172 * Set a custom info logging function. Passing in NULL will reset the logging
173 * callback to its default value.
175 * This function returns the value of the old callback.
177 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
179 llapi_log_callback_t old = llapi_info_callback;
182 llapi_info_callback = cb;
184 llapi_info_callback = info_callback_default;
190 * size_units is to be initialized (or zeroed) by caller.
192 int llapi_parse_size(const char *optarg, unsigned long long *size,
193 unsigned long long *size_units, int bytes_spec)
196 char *argbuf = (char *)optarg;
197 unsigned long long frac = 0, frac_d = 1;
199 if (strncmp(optarg, "-", 1) == 0)
202 if (*size_units == 0)
205 *size = strtoull(argbuf, &end, 0);
206 if (end != NULL && *end == '.') {
210 frac = strtoull(argbuf, &end, 10);
211 /* count decimal places */
212 for (i = 0; i < (end - argbuf); i++)
217 if ((*end == 'b') && *(end + 1) == '\0' &&
218 (*size & (~0ULL << (64 - 9))) == 0 &&
220 *size_units = 1 << 9;
221 } else if ((*end == 'b') &&
222 *(end + 1) == '\0' &&
225 } else if ((*end == 'k' || *end == 'K') &&
226 *(end + 1) == '\0' &&
227 (*size & (~0ULL << (64 - 10))) == 0) {
228 *size_units = 1 << 10;
229 } else if ((*end == 'm' || *end == 'M') &&
230 *(end + 1) == '\0' &&
231 (*size & (~0ULL << (64 - 20))) == 0) {
232 *size_units = 1 << 20;
233 } else if ((*end == 'g' || *end == 'G') &&
234 *(end + 1) == '\0' &&
235 (*size & (~0ULL << (64 - 30))) == 0) {
236 *size_units = 1 << 30;
237 } else if ((*end == 't' || *end == 'T') &&
238 *(end + 1) == '\0' &&
239 (*size & (~0ULL << (64 - 40))) == 0) {
240 *size_units = 1ULL << 40;
241 } else if ((*end == 'p' || *end == 'P') &&
242 *(end + 1) == '\0' &&
243 (*size & (~0ULL << (64 - 50))) == 0) {
244 *size_units = 1ULL << 50;
245 } else if ((*end == 'e' || *end == 'E') &&
246 *(end + 1) == '\0' &&
247 (*size & (~0ULL << (64 - 60))) == 0) {
248 *size_units = 1ULL << 60;
253 *size = *size * *size_units + frac * *size_units / frac_d;
258 int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
260 struct obd_ioctl_data *overlay;
263 data->ioc_len = obd_ioctl_packlen(data);
264 data->ioc_version = OBD_IOCTL_VERSION;
266 if (*pbuf != NULL && data->ioc_len > max_len) {
267 fprintf(stderr, "pbuf = %p, ioc_len = %u, max_len = %d\n",
268 *pbuf, data->ioc_len, max_len);
273 *pbuf = malloc(data->ioc_len);
278 overlay = (struct obd_ioctl_data *)*pbuf;
279 memcpy(*pbuf, data, sizeof(*data));
281 ptr = overlay->ioc_bulk;
282 if (data->ioc_inlbuf1) {
283 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
284 ptr += cfs_size_round(data->ioc_inllen1);
287 if (data->ioc_inlbuf2) {
288 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
289 ptr += cfs_size_round(data->ioc_inllen2);
292 if (data->ioc_inlbuf3) {
293 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
294 ptr += cfs_size_round(data->ioc_inllen3);
297 if (data->ioc_inlbuf4) {
298 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
299 ptr += cfs_size_round(data->ioc_inllen4);
305 int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
307 struct obd_ioctl_data *overlay;
313 overlay = (struct obd_ioctl_data *)pbuf;
315 /* Preserve the caller's buffer pointers */
316 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
317 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
318 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
319 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
321 memcpy(data, pbuf, sizeof(*data));
323 ptr = overlay->ioc_bulk;
324 if (data->ioc_inlbuf1) {
325 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
326 ptr += cfs_size_round(data->ioc_inllen1);
329 if (data->ioc_inlbuf2) {
330 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
331 ptr += cfs_size_round(data->ioc_inllen2);
334 if (data->ioc_inlbuf3) {
335 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
336 ptr += cfs_size_round(data->ioc_inllen3);
339 if (data->ioc_inlbuf4) {
340 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
341 ptr += cfs_size_round(data->ioc_inllen4);
347 /* XXX: llapi_xxx() functions return negative values upon failure */
349 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
350 int stripe_count, int stripe_pattern)
354 /* 64 KB is the largest common page size I'm aware of (on ia64), but
355 * check the local page size just in case. */
356 page_size = LOV_MIN_STRIPE_SIZE;
357 if (getpagesize() > page_size) {
358 page_size = getpagesize();
359 llapi_err_noerrno(LLAPI_MSG_WARN,
360 "warning: your page size (%u) is "
361 "larger than expected (%u)", page_size,
362 LOV_MIN_STRIPE_SIZE);
364 if (!llapi_stripe_size_is_aligned(stripe_size)) {
366 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
367 "must be an even multiple of %d bytes",
368 stripe_size, page_size);
371 if (!llapi_stripe_index_is_valid(stripe_offset)) {
373 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
377 if (!llapi_stripe_count_is_valid(stripe_count)) {
379 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
383 if (llapi_stripe_size_is_too_big(stripe_size)) {
385 llapi_error(LLAPI_MSG_ERROR, rc,
386 "warning: stripe size 4G or larger "
387 "is not currently supported and would wrap");
394 * Trim a trailing newline from a string, if it exists.
396 int llapi_chomp_string(char *buf)
412 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
414 static int get_param_lov(const char *path, const char *param,
415 char *buf, size_t buf_size)
417 struct obd_uuid uuid;
420 rc = llapi_file_get_lov_uuid(path, &uuid);
424 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
429 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
431 static int get_param_lmv(const char *path, const char *param,
432 char *buf, size_t buf_size)
434 struct obd_uuid uuid;
437 rc = llapi_file_get_lmv_uuid(path, &uuid);
441 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
445 static int get_mds_md_size(const char *path)
447 char buf[PATH_MAX], inst[PATH_MAX];
448 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
451 rc = llapi_getname(path, inst, sizeof(inst));
455 /* Get the max ea size from llite parameters. */
456 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
457 "max_easize", buf, sizeof(buf));
463 return rc > 0 ? rc : md_size;
466 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
468 return get_param_lmv(path, "uuid", buf, bufsize);
472 * if pool is NULL, search ostname in target_obd
473 * if pool is not NULL:
474 * if pool not found returns errno < 0
475 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
476 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
478 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
480 char buffer[PATH_MAX];
486 /* You need one or the other */
487 if (poolname == NULL && fsname == NULL)
491 len = strlen(ostname);
493 if (poolname == NULL && len == 0)
496 /* Search by poolname and fsname if is not NULL */
497 if (poolname != NULL) {
498 rc = poolpath(¶m, fsname, NULL);
500 snprintf(buffer, sizeof(buffer), "%s/%s",
501 param.gl_pathv[0], poolname);
503 } else if (fsname != NULL) {
504 rc = get_lustre_param_path("lov", fsname,
506 "target_obd", ¶m);
508 strncpy(buffer, param.gl_pathv[0],
514 cfs_free_param_data(¶m);
518 fd = fopen(buffer, "r");
522 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
523 if (poolname == NULL) {
525 /* Search for an ostname in the list of OSTs
526 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
527 ptr = strchr(buffer, ' ');
529 (strncmp(ptr + 1, ostname, len) == 0)) {
534 /* Search for an ostname in a pool,
535 (or an existing non-empty pool if no ostname) */
536 if ((ostname == NULL) ||
537 (strncmp(buffer, ostname, len) == 0)) {
548 * Open a Lustre file.
550 * \param name the name of the file to be opened
551 * \param flags access mode, see flags in open(2)
552 * \param mode permission of the file if it is created, see mode in open(2)
553 * \param param stripe pattern of the newly created file
555 * \retval file descriptor of opened file
556 * \retval negative errno on failure
558 int llapi_file_open_param(const char *name, int flags, mode_t mode,
559 const struct llapi_stripe_param *param)
561 char fsname[MAX_OBD_NAME + 1] = { 0 };
562 char *pool_name = param->lsp_pool;
563 struct lov_user_md *lum = NULL;
564 size_t lum_size = sizeof(*lum);
567 /* Make sure we are on a Lustre file system */
568 rc = llapi_search_fsname(name, fsname);
570 llapi_error(LLAPI_MSG_ERROR, rc,
571 "'%s' is not on a Lustre filesystem",
576 /* Check if the stripe pattern is sane. */
577 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
578 param->lsp_stripe_offset,
579 param->lsp_stripe_count,
580 param->lsp_stripe_pattern);
584 /* Make sure we have a good pool */
585 if (pool_name != NULL) {
586 /* in case user gives the full pool name <fsname>.<poolname>,
587 * strip the fsname */
588 char *ptr = strchr(pool_name, '.');
591 if (strcmp(pool_name, fsname) != 0) {
593 llapi_err_noerrno(LLAPI_MSG_ERROR,
594 "Pool '%s' is not on filesystem '%s'",
601 /* Make sure the pool exists and is non-empty */
602 rc = llapi_search_ost(fsname, pool_name, NULL);
604 char *err = rc == 0 ? "has no OSTs" : "does not exist";
606 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
607 fsname, pool_name, err);
611 lum_size = sizeof(struct lov_user_md_v3);
614 /* sanity check of target list */
615 if (param->lsp_is_specific) {
616 char ostname[MAX_OBD_NAME + 1];
620 for (i = 0; i < param->lsp_stripe_count; i++) {
621 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
622 fsname, param->lsp_osts[i]);
623 rc = llapi_search_ost(fsname, pool_name, ostname);
628 llapi_error(LLAPI_MSG_ERROR, rc,
629 "%s: cannot find OST %s in %s",
636 /* Make sure stripe offset is in OST list. */
637 if (param->lsp_osts[i] == param->lsp_stripe_offset)
641 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
642 "%s: stripe offset '%d' is not in the "
644 __func__, param->lsp_stripe_offset);
648 lum_size = lov_user_md_size(param->lsp_stripe_count,
649 LOV_USER_MAGIC_SPECIFIC);
652 lum = calloc(1, lum_size);
657 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
659 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
660 flags = O_DIRECTORY | O_RDONLY;
667 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
672 /* Initialize IOCTL striping pattern structure */
673 lum->lmm_magic = LOV_USER_MAGIC_V1;
674 lum->lmm_pattern = param->lsp_stripe_pattern;
675 lum->lmm_stripe_size = param->lsp_stripe_size;
676 lum->lmm_stripe_count = param->lsp_stripe_count;
677 lum->lmm_stripe_offset = param->lsp_stripe_offset;
678 if (pool_name != NULL) {
679 struct lov_user_md_v3 *lumv3 = (void *)lum;
681 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
682 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
684 if (param->lsp_is_specific) {
685 struct lov_user_md_v3 *lumv3 = (void *)lum;
688 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
689 if (pool_name == NULL) {
690 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
691 * OST list, therefore if pool is not specified we have
692 * to pack a null pool name for placeholder. */
693 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
696 for (i = 0; i < param->lsp_stripe_count; i++)
697 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
700 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
701 char *errmsg = "stripe already set";
704 if (errno != EEXIST && errno != EALREADY)
705 errmsg = strerror(errno);
707 llapi_err_noerrno(LLAPI_MSG_ERROR,
708 "error on ioctl %#jx for '%s' (%d): %s",
709 (uintmax_t)LL_IOC_LOV_SETSTRIPE, name, fd,
721 int llapi_file_open_pool(const char *name, int flags, int mode,
722 unsigned long long stripe_size, int stripe_offset,
723 int stripe_count, int stripe_pattern, char *pool_name)
725 const struct llapi_stripe_param param = {
726 .lsp_stripe_size = stripe_size,
727 .lsp_stripe_count = stripe_count,
728 .lsp_stripe_pattern = stripe_pattern,
729 .lsp_stripe_offset = stripe_offset,
730 .lsp_pool = pool_name
732 return llapi_file_open_param(name, flags, mode, ¶m);
735 int llapi_file_open(const char *name, int flags, int mode,
736 unsigned long long stripe_size, int stripe_offset,
737 int stripe_count, int stripe_pattern)
739 return llapi_file_open_pool(name, flags, mode, stripe_size,
740 stripe_offset, stripe_count,
741 stripe_pattern, NULL);
744 int llapi_file_create(const char *name, unsigned long long stripe_size,
745 int stripe_offset, int stripe_count, int stripe_pattern)
749 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
750 stripe_offset, stripe_count, stripe_pattern,
759 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
760 int stripe_offset, int stripe_count,
761 int stripe_pattern, char *pool_name)
765 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
766 stripe_offset, stripe_count, stripe_pattern,
775 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
776 int stripe_count, int stripe_pattern,
777 const char *pool_name)
779 struct lmv_user_md lum = { 0 };
783 lum.lum_magic = LMV_USER_MAGIC;
784 lum.lum_stripe_offset = stripe_offset;
785 lum.lum_stripe_count = stripe_count;
786 lum.lum_hash_type = stripe_pattern;
787 if (pool_name != NULL) {
788 if (strlen(pool_name) >= sizeof(lum.lum_pool_name)) {
789 llapi_err_noerrno(LLAPI_MSG_ERROR,
790 "error LL_IOC_LMV_SET_DEFAULT_STRIPE '%s'"
791 ": too large pool name: %s", name, pool_name);
794 strncpy(lum.lum_pool_name, pool_name,
795 sizeof(lum.lum_pool_name));
798 fd = open(name, O_DIRECTORY | O_RDONLY);
801 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
805 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lum);
807 char *errmsg = "stripe already set";
809 if (errno != EEXIST && errno != EALREADY)
810 errmsg = strerror(errno);
812 llapi_err_noerrno(LLAPI_MSG_ERROR,
813 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
820 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
821 int stripe_count, int stripe_pattern,
822 const char *pool_name)
824 struct lmv_user_md lmu = { 0 };
825 struct obd_ioctl_data data = { 0 };
828 char *dirpath = NULL;
829 char *namepath = NULL;
835 dirpath = strdup(name);
836 namepath = strdup(name);
837 if (!dirpath || !namepath)
840 lmu.lum_magic = LMV_USER_MAGIC;
841 lmu.lum_stripe_offset = stripe_offset;
842 lmu.lum_stripe_count = stripe_count;
843 lmu.lum_hash_type = stripe_pattern;
844 if (pool_name != NULL) {
845 if (strlen(pool_name) > LOV_MAXPOOLNAME) {
846 llapi_err_noerrno(LLAPI_MSG_ERROR,
847 "error LL_IOC_LMV_SETSTRIPE '%s' : too large"
848 "pool name: %s", name, pool_name);
852 memcpy(lmu.lum_pool_name, pool_name, strlen(pool_name));
855 filename = basename(namepath);
856 dir = dirname(dirpath);
858 data.ioc_inlbuf1 = (char *)filename;
859 data.ioc_inllen1 = strlen(filename) + 1;
860 data.ioc_inlbuf2 = (char *)&lmu;
861 data.ioc_inllen2 = sizeof(struct lmv_user_md);
862 data.ioc_type = mode;
863 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
865 llapi_error(LLAPI_MSG_ERROR, rc,
866 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
871 fd = open(dir, O_DIRECTORY | O_RDONLY);
874 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
878 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
879 char *errmsg = "stripe already set";
881 if (errno != EEXIST && errno != EALREADY)
882 errmsg = strerror(errno);
884 llapi_err_noerrno(LLAPI_MSG_ERROR,
885 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
895 int llapi_direntry_remove(char *dname)
897 char *dirpath = NULL;
898 char *namepath = NULL;
904 dirpath = strdup(dname);
905 namepath = strdup(dname);
906 if (!dirpath || !namepath)
909 filename = basename(namepath);
911 dir = dirname(dirpath);
913 fd = open(dir, O_DIRECTORY | O_RDONLY);
916 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
921 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
922 char *errmsg = strerror(errno);
923 llapi_err_noerrno(LLAPI_MSG_ERROR,
924 "error on ioctl %#jx for '%s' (%d): %s",
925 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
937 * Find the fsname, the full path, and/or an open fd.
938 * Either the fsname or path must not be NULL
940 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
943 char buf[PATH_MAX], mntdir[PATH_MAX];
946 int idx = 0, len = 0, mntlen, fd;
949 /* get the mount point */
950 fp = setmntent(PROC_MOUNTS, "r");
953 llapi_error(LLAPI_MSG_ERROR, rc,
954 "setmntent(%s) failed", PROC_MOUNTS);
958 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
961 if (!llapi_is_lustre_mnt(&mnt))
964 if ((want & WANT_INDEX) && (idx++ != index))
967 mntlen = strlen(mnt.mnt_dir);
968 ptr = strchr(mnt.mnt_fsname, '/');
969 while (ptr && *ptr == '/')
971 /* thanks to the call to llapi_is_lustre_mnt() above,
972 * we are sure that mnt.mnt_fsname contains ":/",
973 * so ptr should never be NULL */
977 while (*ptr_end != '/' && *ptr_end != '\0')
980 /* Check the fsname for a match, if given */
981 if (!(want & WANT_FSNAME) && fsname != NULL &&
982 (strlen(fsname) > 0) &&
983 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
986 /* If the path isn't set return the first one we find */
987 if (path == NULL || strlen(path) == 0) {
988 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
989 mntdir[strlen(mnt.mnt_dir)] = '\0';
990 if ((want & WANT_FSNAME) && fsname != NULL) {
991 strncpy(fsname, ptr, ptr_end - ptr);
992 fsname[ptr_end - ptr] = '\0';
996 /* Otherwise find the longest matching path */
997 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
998 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
999 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1000 mntdir[strlen(mnt.mnt_dir)] = '\0';
1002 if ((want & WANT_FSNAME) && fsname != NULL) {
1003 strncpy(fsname, ptr, ptr_end - ptr);
1004 fsname[ptr_end - ptr] = '\0';
1013 if ((want & WANT_PATH) && path != NULL) {
1014 strncpy(path, mntdir, strlen(mntdir));
1015 path[strlen(mntdir)] = '\0';
1017 if (want & WANT_FD) {
1018 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1021 llapi_error(LLAPI_MSG_ERROR, rc,
1022 "error opening '%s'", mntdir);
1028 } else if (want & WANT_ERROR)
1029 llapi_err_noerrno(LLAPI_MSG_ERROR,
1030 "can't find fs root for '%s': %d",
1031 (want & WANT_PATH) ? fsname : path, rc);
1036 * search lustre mounts
1038 * Calling this function will return to the user the mount point, mntdir, and
1039 * the file system name, fsname, if the user passed a buffer to this routine.
1041 * The user inputs are pathname and index. If the pathname is supplied then
1042 * the value of the index will be ignored. The pathname will return data if
1043 * the pathname is located on a lustre mount. Index is used to pick which
1044 * mount point you want in the case of multiple mounted lustre file systems.
1045 * See function lfs_osts in lfs.c for an example of the index use.
1047 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1050 int want = WANT_PATH, idx = -1;
1052 if (!pathname || pathname[0] == '\0') {
1056 strcpy(mntdir, pathname);
1059 want |= WANT_FSNAME;
1060 return get_root_path(want, fsname, NULL, mntdir, idx);
1063 /* Given a path, find the corresponding Lustre fsname */
1064 int llapi_search_fsname(const char *pathname, char *fsname)
1069 path = realpath(pathname, NULL);
1071 char buf[PATH_MAX], *ptr;
1074 if (pathname[0] != '/') {
1075 /* Need an absolute path, but realpath() only works for
1076 * pathnames that actually exist. We go through the
1077 * extra hurdle of dirname(getcwd() + pathname) in
1078 * case the relative pathname contains ".." in it. */
1079 if (getcwd(buf, sizeof(buf) - 2) == NULL)
1081 rc = strlcat(buf, "/", sizeof(buf));
1082 if (rc >= sizeof(buf))
1085 rc = strlcat(buf, pathname, sizeof(buf));
1086 if (rc >= sizeof(buf))
1088 path = realpath(buf, NULL);
1090 ptr = strrchr(buf, '/');
1094 path = realpath(buf, NULL);
1097 llapi_error(LLAPI_MSG_ERROR, rc,
1098 "pathname '%s' cannot expand",
1104 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1109 int llapi_search_rootpath(char *pathname, const char *fsname)
1111 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1114 int llapi_getname(const char *path, char *buf, size_t size)
1116 struct obd_uuid uuid_buf;
1117 char *uuid = uuid_buf.uuid;
1120 memset(&uuid_buf, 0, sizeof(uuid_buf));
1121 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1125 /* We want to turn lustre-clilov-ffff88002738bc00 into
1126 * lustre-ffff88002738bc00. */
1128 nr = snprintf(buf, size, "%.*s-%s",
1129 (int) (strlen(uuid) - 24), uuid,
1130 uuid + strlen(uuid) - 16);
1139 * Get the list of pool members.
1140 * \param poolname string of format \<fsname\>.\<poolname\>
1141 * \param members caller-allocated array of char*
1142 * \param list_size size of the members array
1143 * \param buffer caller-allocated buffer for storing OST names
1144 * \param buffer_size size of the buffer
1146 * \return number of members retrieved for this pool
1147 * \retval -error failure
1149 int llapi_get_poolmembers(const char *poolname, char **members,
1150 int list_size, char *buffer, int buffer_size)
1152 char fsname[PATH_MAX];
1161 /* name is FSNAME.POOLNAME */
1162 if (strlen(poolname) >= sizeof(fsname))
1164 strlcpy(fsname, poolname, sizeof(fsname));
1165 pool = strchr(fsname, '.');
1172 rc = poolpath(&pathname, fsname, NULL);
1174 llapi_error(LLAPI_MSG_ERROR, rc,
1175 "Lustre filesystem '%s' not found",
1180 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1181 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1182 cfs_free_param_data(&pathname);
1183 if (rc >= sizeof(buf))
1185 fd = fopen(buf, "r");
1188 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1193 while (fgets(buf, sizeof(buf), fd) != NULL) {
1194 if (nb_entries >= list_size) {
1198 buf[sizeof(buf) - 1] = '\0';
1200 tmp = strchr(buf, '\n');
1203 if (used + strlen(buf) + 1 > buffer_size) {
1208 strcpy(buffer + used, buf);
1209 members[nb_entries] = buffer + used;
1210 used += strlen(buf) + 1;
1220 * Get the list of pools in a filesystem.
1221 * \param name filesystem name or path
1222 * \param poollist caller-allocated array of char*
1223 * \param list_size size of the poollist array
1224 * \param buffer caller-allocated buffer for storing pool names
1225 * \param buffer_size size of the buffer
1227 * \return number of pools retrieved for this filesystem
1228 * \retval -error failure
1230 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1231 char *buffer, int buffer_size)
1233 char rname[PATH_MAX];
1238 struct dirent *pool;
1240 unsigned int nb_entries = 0;
1241 unsigned int used = 0;
1244 /* initialize output array */
1245 for (i = 0; i < list_size; i++)
1248 /* is name a pathname ? */
1249 ptr = strchr(name, '/');
1251 /* only absolute pathname is supported */
1255 if (!realpath(name, rname)) {
1257 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1262 fsname = strdup(rname);
1266 rc = poolpath(&pathname, NULL, rname);
1268 /* name is FSNAME */
1269 fsname = strdup(name);
1272 rc = poolpath(&pathname, fsname, NULL);
1275 llapi_error(LLAPI_MSG_ERROR, rc,
1276 "Lustre filesystem '%s' not found", name);
1280 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1281 dir = opendir(pathname.gl_pathv[0]);
1284 llapi_error(LLAPI_MSG_ERROR, rc,
1285 "Could not open pool list for '%s'",
1292 pool = readdir(dir);
1298 /* ignore . and .. */
1299 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1302 /* check output bounds */
1303 if (nb_entries >= list_size) {
1308 /* +2 for '.' and final '\0' */
1309 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1315 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1316 poollist[nb_entries] = buffer + used;
1317 used += strlen(pool->d_name) + strlen(fsname) + 2;
1323 llapi_error(LLAPI_MSG_ERROR, rc,
1324 "Error reading pool list for '%s'", name);
1327 cfs_free_param_data(&pathname);
1330 return rc != 0 ? rc : nb_entries;
1333 /* wrapper for lfs.c and obd.c */
1334 int llapi_poollist(const char *name)
1336 /* list of pool names (assume that pool count is smaller
1338 char **list, *buffer = NULL, *fsname = (char *)name;
1339 char *poolname = NULL, *tmp = NULL, data[16];
1340 enum param_filter type = FILTER_BY_PATH;
1341 int obdcount, bufsize, rc, nb, i;
1346 if (name[0] != '/') {
1347 fsname = strdup(name);
1351 poolname = strchr(fsname, '.');
1354 type = FILTER_BY_FS_NAME;
1357 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1358 data, sizeof(data));
1361 obdcount = atoi(data);
1363 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1364 * and also an array to store the pointers for all that
1365 * allocated space. */
1367 bufsize = sizeof(struct obd_uuid) * obdcount;
1368 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1369 if (buffer == NULL) {
1373 list = (char **) (buffer + bufsize);
1376 /* name is a path or fsname */
1377 nb = llapi_get_poollist(name, list, obdcount,
1380 /* name is a pool name (<fsname>.<poolname>) */
1381 nb = llapi_get_poolmembers(name, list, obdcount,
1385 if (nb == -EOVERFLOW) {
1388 goto retry_get_pools;
1391 for (i = 0; i < nb; i++)
1392 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1393 rc = (nb < 0 ? nb : 0);
1397 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1402 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1403 void *data, struct dirent64 *de);
1405 #define OBD_NOT_FOUND (-1)
1407 static int common_param_init(struct find_param *param, char *path)
1409 int lum_size = get_mds_md_size(path);
1411 if (lum_size < PATH_MAX + 1)
1412 lum_size = PATH_MAX + 1;
1414 param->fp_lum_size = lum_size;
1415 param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
1416 if (param->fp_lmd == NULL) {
1417 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1418 "error: allocation of %zu bytes for ioctl",
1419 sizeof(lstat_t) + param->fp_lum_size);
1423 param->fp_lmv_stripe_count = 256;
1424 param->fp_lmv_md = calloc(1,
1425 lmv_user_md_size(param->fp_lmv_stripe_count,
1427 if (param->fp_lmv_md == NULL) {
1428 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1429 "error: allocation of %d bytes for ioctl",
1430 lmv_user_md_size(param->fp_lmv_stripe_count,
1435 param->fp_got_uuids = 0;
1436 param->fp_obd_indexes = NULL;
1437 param->fp_obd_index = OBD_NOT_FOUND;
1438 if (!param->fp_migrate)
1439 param->fp_mdt_index = OBD_NOT_FOUND;
1443 static void find_param_fini(struct find_param *param)
1445 if (param->fp_obd_indexes)
1446 free(param->fp_obd_indexes);
1449 free(param->fp_lmd);
1451 if (param->fp_lmv_md)
1452 free(param->fp_lmv_md);
1455 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1456 struct dirent64 *de)
1458 struct find_param *param = data;
1464 /* set errno upon failure */
1465 static DIR *opendir_parent(const char *path)
1471 path_copy = strdup(path);
1472 if (path_copy == NULL)
1475 parent_path = dirname(path_copy);
1476 parent = opendir(parent_path);
1482 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1487 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1488 if (param->fp_get_default_lmv)
1489 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1491 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1493 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1494 if (errno == E2BIG && ret != 0) {
1498 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1499 if (stripe_count <= param->fp_lmv_stripe_count)
1502 free(param->fp_lmv_md);
1503 param->fp_lmv_stripe_count = stripe_count;
1504 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1505 param->fp_lmv_md = malloc(lmv_size);
1506 if (param->fp_lmv_md == NULL) {
1507 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1508 "error: allocation of %d bytes for ioctl",
1509 lmv_user_md_size(param->fp_lmv_stripe_count,
1518 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1519 struct lov_user_mds_data *lmd, int lumlen)
1521 lstat_t *st = &lmd->lmd_st;
1524 if (parent == NULL && dir == NULL)
1528 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1529 } else if (parent) {
1530 char *fname = strrchr(path, '/');
1532 /* To avoid opening, locking, and closing each file on the
1533 * client if that is not needed. The GETFILEINFO ioctl can
1534 * be done on the patent dir with a single open for all
1535 * files in that directory, and it also doesn't pollute the
1536 * client dcache with millions of dentries when traversing
1537 * a large filesystem. */
1538 fname = (fname == NULL ? path : fname + 1);
1539 /* retrieve needed file info */
1540 strlcpy((char *)lmd, fname, lumlen);
1541 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1545 if (errno == ENOTTY) {
1546 /* ioctl is not supported, it is not a lustre fs.
1547 * Do the regular lstat(2) instead. */
1548 ret = lstat_f(path, st);
1551 llapi_error(LLAPI_MSG_ERROR, ret,
1552 "error: %s: lstat failed for %s",
1555 } else if (errno == ENOENT) {
1557 llapi_error(LLAPI_MSG_WARN, ret,
1558 "warning: %s: %s does not exist",
1560 } else if (errno != EISDIR) {
1562 llapi_error(LLAPI_MSG_ERROR, ret,
1563 "%s ioctl failed for %s.",
1564 dir ? "LL_IOC_MDC_GETINFO" :
1565 "IOC_MDC_GETFILEINFO", path);
1568 llapi_error(LLAPI_MSG_ERROR, ret,
1569 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1576 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1577 semantic_func_t sem_init,
1578 semantic_func_t sem_fini, void *data,
1579 struct dirent64 *de)
1581 struct find_param *param = (struct find_param *)data;
1582 struct dirent64 *dent;
1590 if (!d && errno != ENOTDIR) {
1592 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1595 } else if (!d && !parent) {
1596 /* ENOTDIR. Open the parent dir. */
1597 p = opendir_parent(path);
1604 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1610 while ((dent = readdir64(d)) != NULL) {
1613 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1616 /* Don't traverse .lustre directory */
1617 if (!(strcmp(dent->d_name, dot_lustre_name)))
1621 if ((len + dent->d_reclen + 2) > size) {
1622 llapi_err_noerrno(LLAPI_MSG_ERROR,
1623 "error: %s: string buffer is too small",
1628 strcat(path, dent->d_name);
1630 if (dent->d_type == DT_UNKNOWN) {
1631 lstat_t *st = ¶m->fp_lmd->lmd_st;
1633 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1634 param->fp_lum_size);
1636 dent->d_type = IFTODT(st->st_mode);
1643 switch (dent->d_type) {
1645 llapi_err_noerrno(LLAPI_MSG_ERROR,
1646 "error: %s: '%s' is UNKNOWN type %d",
1647 __func__, dent->d_name, dent->d_type);
1650 rc = llapi_semantic_traverse(path, size, d, sem_init,
1651 sem_fini, data, dent);
1652 if (rc != 0 && ret == 0)
1658 rc = sem_init(path, d, NULL, data, dent);
1659 if (rc < 0 && ret == 0)
1662 if (sem_fini && rc == 0)
1663 sem_fini(path, d, NULL, data, dent);
1671 sem_fini(path, parent, &d, data, de);
1680 static int param_callback(char *path, semantic_func_t sem_init,
1681 semantic_func_t sem_fini, struct find_param *param)
1683 int ret, len = strlen(path);
1686 if (len > PATH_MAX) {
1688 llapi_error(LLAPI_MSG_ERROR, ret,
1689 "Path name '%s' is too long", path);
1693 buf = (char *)malloc(PATH_MAX + 1);
1697 strlcpy(buf, path, PATH_MAX + 1);
1698 ret = common_param_init(param, buf);
1702 param->fp_depth = 0;
1704 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1705 sem_fini, param, NULL);
1707 find_param_fini(param);
1709 return ret < 0 ? ret : 0;
1712 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1714 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1717 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1722 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1724 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1727 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1732 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1736 fd = open(path, O_RDONLY | O_NONBLOCK);
1739 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1743 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1749 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1753 fd = open(path, O_RDONLY | O_NONBLOCK);
1756 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1760 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1772 * If uuidp is NULL, return the number of available obd uuids.
1773 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1774 * there are more OSTs than allocated to uuidp, then an error is returned with
1775 * the ost_count set to number of available obd uuids.
1777 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1778 int *ost_count, enum tgt_type type)
1780 char buf[PATH_MAX], format[32];
1781 int rc = 0, index = 0;
1782 struct obd_uuid name;
1786 /* Get the lov name */
1787 if (type == LOV_TYPE)
1788 rc = llapi_file_fget_lov_uuid(fd, &name);
1790 rc = llapi_file_fget_lmv_uuid(fd, &name);
1794 /* Now get the ost uuids */
1795 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
1796 FILTER_BY_EXACT, "target_obd", ¶m);
1800 fp = fopen(param.gl_pathv[0], "r");
1803 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
1808 snprintf(format, sizeof(format),
1809 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
1810 while (fgets(buf, sizeof(buf), fp) != NULL) {
1811 if (uuidp && (index < *ost_count)) {
1812 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
1820 if (uuidp && (index > *ost_count))
1825 cfs_free_param_data(¶m);
1829 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1831 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1834 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1839 root = open(mnt, O_RDONLY | O_DIRECTORY);
1842 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1847 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
1855 /* Check if user specified value matches a real uuid. Ignore _UUID,
1856 * -osc-4ba41334, other trailing gunk in comparison.
1857 * @param real_uuid ends in "_UUID"
1858 * @param search_uuid may or may not end in "_UUID"
1860 int llapi_uuid_match(char *real_uuid, char *search_uuid)
1862 int cmplen = strlen(real_uuid);
1863 int searchlen = strlen(search_uuid);
1865 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
1867 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
1870 /* The UUIDs may legitimately be different lengths, if
1871 * the system was upgraded from an older version. */
1872 if (cmplen != searchlen)
1875 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
1878 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
1879 * returned in param->fp_obd_index */
1880 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
1882 struct obd_uuid obd_uuid;
1889 if (param->fp_got_uuids)
1892 /* Get the lov/lmv name */
1893 if (param->fp_get_lmv)
1894 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
1896 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
1898 if (rc != -ENOTTY) {
1899 llapi_error(LLAPI_MSG_ERROR, rc,
1900 "error: can't get %s name: %s",
1901 param->fp_get_lmv ? "lmv" : "lov",
1909 param->fp_got_uuids = 1;
1911 /* Now get the ost uuids */
1912 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
1913 obd_uuid.uuid, FILTER_BY_EXACT,
1914 "target_obd", ¶m_data);
1918 fp = fopen(param_data.gl_pathv[0], "r");
1921 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
1922 param_data.gl_pathv[0]);
1926 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
1927 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
1928 param->fp_get_lmv ? "MDTS" : "OBDS");
1930 snprintf(format, sizeof(format),
1931 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
1932 while (fgets(buf, sizeof(buf), fp) != NULL) {
1935 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
1938 if (param->fp_obd_uuid) {
1939 if (llapi_uuid_match(obd_uuid.uuid,
1940 param->fp_obd_uuid->uuid)) {
1941 param->fp_obd_index = index;
1944 } else if (!param->fp_quiet && !param->fp_obds_printed) {
1945 /* Print everything */
1946 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
1949 param->fp_obds_printed = 1;
1953 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
1954 llapi_err_noerrno(LLAPI_MSG_ERROR,
1955 "error: %s: unknown obduuid: %s",
1956 __func__, param->fp_obd_uuid->uuid);
1960 cfs_free_param_data(¶m_data);
1964 /* In this case, param->fp_obd_uuid will be an array of obduuids and
1965 * obd index for all these obduuids will be returned in
1966 * param->fp_obd_indexes */
1967 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
1968 int num_obds, int **obdindexes, int *obdindex,
1971 int ret, obdcount, obd_valid = 0, obdnum;
1973 struct obd_uuid *uuids = NULL;
1977 if (type == LOV_TYPE)
1978 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
1980 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
1984 obdcount = atoi(buf);
1985 uuids = malloc(obdcount * sizeof(struct obd_uuid));
1990 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
1992 if (ret == -EOVERFLOW) {
1993 struct obd_uuid *uuids_temp;
1995 uuids_temp = realloc(uuids, obdcount *
1996 sizeof(struct obd_uuid));
1997 if (uuids_temp != NULL) {
1999 goto retry_get_uuids;
2004 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2008 indexes = malloc(num_obds * sizeof(*obdindex));
2009 if (indexes == NULL) {
2014 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2017 /* The user may have specified a simple index */
2018 i = strtol(obduuids[obdnum].uuid, &end, 0);
2019 if (end && *end == '\0' && i < obdcount) {
2020 indexes[obdnum] = i;
2023 for (i = 0; i < obdcount; i++) {
2024 if (llapi_uuid_match(uuids[i].uuid,
2025 obduuids[obdnum].uuid)) {
2026 indexes[obdnum] = i;
2032 if (i >= obdcount) {
2033 indexes[obdnum] = OBD_NOT_FOUND;
2034 llapi_err_noerrno(LLAPI_MSG_ERROR,
2035 "error: %s: unknown obduuid: %s",
2036 __func__, obduuids[obdnum].uuid);
2042 *obdindex = OBD_NOT_FOUND;
2044 *obdindex = obd_valid;
2046 *obdindexes = indexes;
2054 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2058 if (param->fp_mdt_uuid) {
2059 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2061 ¶m->fp_mdt_indexes,
2062 ¶m->fp_mdt_index, LMV_TYPE);
2067 if (param->fp_obd_uuid) {
2068 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2070 ¶m->fp_obd_indexes,
2071 ¶m->fp_obd_index, LOV_TYPE);
2076 param->fp_got_uuids = 1;
2081 int llapi_ostlist(char *path, struct find_param *param)
2086 fd = open(path, O_RDONLY | O_DIRECTORY);
2090 ret = setup_obd_uuid(fd, path, param);
2097 * Tries to determine the default stripe attributes for a given filesystem. The
2098 * filesystem to check should be specified by fsname, or will be determined
2101 static int sattr_get_defaults(const char *const fsname,
2102 unsigned int *scount,
2103 unsigned int *ssize,
2104 unsigned int *soffset)
2110 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2111 "stripecount", val, sizeof(val));
2114 *scount = atoi(val);
2118 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2119 "stripesize", val, sizeof(val));
2126 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2127 "stripeoffset", val, sizeof(val));
2130 *soffset = atoi(val);
2137 * Tries to gather the default stripe attributes for a given filesystem. If
2138 * the attributes can be determined, they are cached for easy retreival the
2139 * next time they are needed. Only a single filesystem's attributes are
2142 int sattr_cache_get_defaults(const char *const fsname,
2143 const char *const pathname, unsigned int *scount,
2144 unsigned int *ssize, unsigned int *soffset)
2147 char fsname[PATH_MAX + 1];
2148 unsigned int stripecount;
2149 unsigned int stripesize;
2150 unsigned int stripeoffset;
2156 char fsname_buf[PATH_MAX + 1];
2157 unsigned int tmp[3];
2159 if (fsname == NULL) {
2160 rc = llapi_search_fsname(pathname, fsname_buf);
2164 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2167 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2169 * Ensure all 3 sattrs (count, size, and offset) are
2170 * successfully retrieved and stored in tmp before writing to
2173 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2177 cache.stripecount = tmp[0];
2178 cache.stripesize = tmp[1];
2179 cache.stripeoffset = tmp[2];
2180 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2184 *scount = cache.stripecount;
2186 *ssize = cache.stripesize;
2188 *soffset = cache.stripeoffset;
2193 enum lov_dump_flags {
2194 LDF_IS_DIR = 0x0001,
2195 LDF_IS_RAW = 0x0002,
2196 LDF_INDENT = 0x0004,
2197 LDF_SKIP_OBJS = 0x0008,
2201 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2202 struct lov_user_ost_data_v1 *objects,
2203 int verbose, int depth, char *pool_name,
2204 enum lov_dump_flags flags)
2206 bool is_dir = flags & LDF_IS_DIR;
2207 bool is_raw = flags & LDF_IS_RAW;
2208 bool indent = flags & LDF_INDENT;
2209 bool yaml = flags & LDF_YAML;
2210 bool skip_objs = flags & LDF_SKIP_OBJS;
2211 char *prefix = is_dir ? "" : "lmm_";
2212 char *separator = "";
2213 char *space = indent ? " " : "";
2216 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2217 lmm_oi_set_seq(&lum->lmm_oi, 0);
2218 if (!indent && (verbose & VERBOSE_DETAIL))
2219 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2222 if (!yaml && !indent && depth && path &&
2223 ((verbose != VERBOSE_OBJID) || !is_dir))
2224 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2226 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2227 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2228 space, prefix, lum->lmm_magic);
2229 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2231 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2232 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2234 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2236 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2241 if (verbose & ~VERBOSE_DFID)
2242 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2244 /* This needs a bit of hand-holding since old 1.x lmm_oi
2245 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2246 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2247 * a real FID. Ideally the 2.x code would have stored this
2248 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2249 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2250 * worked properly (especially since IGIF FIDs use mds_inum as
2251 * the FID SEQ), but unfortunately that didn't happen.
2253 * Print it to look like an IGIF FID, even though the fields
2254 * are reversed on disk, so that it makes sense to userspace.
2256 * Don't use ostid_id() and ostid_seq(), since they assume the
2257 * oi_fid fields are in the right order. This is why there are
2258 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2260 * For newer layout types hopefully this will be a real FID. */
2261 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2262 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2263 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2264 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2265 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2267 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2270 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2274 if (verbose & VERBOSE_COUNT) {
2275 if (verbose & ~VERBOSE_COUNT)
2276 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2279 if (!is_raw && lum->lmm_stripe_count == 0 &&
2280 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2281 unsigned int scount;
2282 rc = sattr_cache_get_defaults(NULL, path,
2286 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2289 llapi_error(LLAPI_MSG_ERROR, rc,
2290 "Cannot determine default"
2293 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2294 lum->lmm_stripe_count ==
2295 (typeof(lum->lmm_stripe_count))(-1)
2296 ? -1 : lum->lmm_stripe_count);
2299 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2300 (__s16)lum->lmm_stripe_count);
2302 if (!yaml && is_dir)
2308 if (verbose & VERBOSE_SIZE) {
2309 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2310 if (verbose & ~VERBOSE_SIZE)
2311 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2313 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2315 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2318 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2320 llapi_error(LLAPI_MSG_ERROR, rc,
2321 "Cannot determine default"
2324 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2325 lum->lmm_stripe_size);
2327 if (!yaml && is_dir)
2333 if ((verbose & VERBOSE_LAYOUT)) {
2334 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2335 if (verbose & ~VERBOSE_LAYOUT)
2336 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2338 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2339 separator = is_dir ? " " : "\n";
2342 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2343 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2344 if (verbose & ~VERBOSE_GENERATION)
2345 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2347 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2348 (int)lum->lmm_layout_gen);
2352 if (verbose & VERBOSE_OFFSET) {
2353 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2354 if (verbose & ~VERBOSE_OFFSET)
2355 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2357 if (is_dir || skip_objs)
2358 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2359 lum->lmm_stripe_offset ==
2360 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2361 lum->lmm_stripe_offset);
2363 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2364 objects[0].l_ost_idx);
2365 if (!yaml && is_dir)
2371 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2372 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2373 if (verbose & ~VERBOSE_POOL)
2374 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2376 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2377 if (!yaml && is_dir)
2383 if (strlen(separator) != 0)
2384 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2387 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2388 struct lov_user_ost_data_v1 *objects,
2389 char *path, int obdindex, int depth,
2390 int header, enum lov_dump_flags flags)
2392 bool is_dir = flags & LDF_IS_DIR;
2393 bool indent = flags & LDF_INDENT;
2394 bool skip_objs = flags & LDF_SKIP_OBJS;
2395 bool yaml = flags & LDF_YAML;
2396 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2399 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2400 if (obdindex == objects[i].l_ost_idx) {
2410 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2413 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2414 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2415 char *space = " - ";
2418 llapi_printf(LLAPI_MSG_NORMAL,
2419 "%6slmm_objects:\n", " ");
2421 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2423 llapi_printf(LLAPI_MSG_NORMAL,
2424 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2426 for (i = 0; i < lum->lmm_stripe_count; i++) {
2427 int idx = objects[i].l_ost_idx;
2428 long long oid = ostid_id(&objects[i].l_ost_oi);
2429 long long gr = ostid_seq(&objects[i].l_ost_oi);
2431 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2435 struct lu_fid fid = { 0 };
2437 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2438 llapi_printf(LLAPI_MSG_NORMAL,
2439 "%sl_ost_idx: %d\n", space, idx);
2440 llapi_printf(LLAPI_MSG_NORMAL,
2441 "%8sl_fid: "DFID_NOBRACE"\n",
2443 } else if (indent) {
2444 struct lu_fid fid = { 0 };
2446 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2447 llapi_printf(LLAPI_MSG_NORMAL,
2448 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2449 space, i, idx, PFID(&fid));
2452 sprintf(fmt, "%s%s%s\n",
2453 "\t%6u\t%14llu\t%#13llx\t",
2454 (fid_seq_is_rsvd(gr) ||
2455 fid_seq_is_mdt0(gr)) ?
2456 "%14llu" : "%#14llx", "%s");
2457 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2459 obdindex == idx ? " *" : "");
2462 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2466 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2467 char *path, int obdindex, int depth, int verbose,
2468 enum lov_dump_flags flags)
2470 struct lmv_user_mds_data *objects = lum->lum_objects;
2471 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2472 int i, obdstripe = 0;
2473 char *separator = "";
2474 bool yaml = flags & LDF_YAML;
2476 if (obdindex != OBD_NOT_FOUND) {
2477 if (lum->lum_stripe_count == 0) {
2478 if (obdindex == lum->lum_stripe_offset)
2481 for (i = 0; i < lum->lum_stripe_count; i++) {
2482 if (obdindex == objects[i].lum_mds) {
2483 llapi_printf(LLAPI_MSG_NORMAL,
2498 /* show all information default */
2500 if (lum->lum_magic == LMV_USER_MAGIC)
2501 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2502 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2504 verbose = VERBOSE_OBJID;
2507 if (depth && path && ((verbose != VERBOSE_OBJID)))
2508 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2510 if (verbose & VERBOSE_COUNT) {
2511 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2512 if (verbose & ~VERBOSE_COUNT)
2513 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2514 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2515 (int)lum->lum_stripe_count);
2516 if ((verbose & VERBOSE_OFFSET) && !yaml)
2522 if (verbose & VERBOSE_OFFSET) {
2523 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2524 if (verbose & ~VERBOSE_OFFSET)
2525 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2526 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2527 (int)lum->lum_stripe_offset);
2528 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2534 if (verbose & VERBOSE_HASH_TYPE) {
2535 unsigned int type = lum->lum_hash_type;
2537 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2538 if (verbose & ~VERBOSE_HASH_TYPE)
2539 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2540 if (type < LMV_HASH_TYPE_MAX)
2541 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2542 mdt_hash_name[type]);
2544 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2549 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2550 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2551 if (obdstripe == 1 && lum->lum_stripe_count > 0)
2552 llapi_printf(LLAPI_MSG_NORMAL,
2553 "mdtidx\t\t FID[seq:oid:ver]\n");
2554 for (i = 0; i < lum->lum_stripe_count; i++) {
2555 int idx = objects[i].lum_mds;
2556 struct lu_fid *fid = &objects[i].lum_fid;
2557 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2558 llapi_printf(LLAPI_MSG_NORMAL,
2559 "%6u\t\t "DFID"\t\t%s\n",
2561 obdindex == idx ? " *" : "");
2566 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2567 pool_name[0] != '\0') {
2568 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2569 if (verbose & ~VERBOSE_POOL)
2570 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2572 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2576 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2577 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2580 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2581 enum lov_dump_flags flags)
2583 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2584 int depth = param->fp_max_depth;
2585 int verbose = param->fp_verbose;
2586 bool yaml = flags & LDF_YAML;
2588 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2589 !(flags & LDF_IS_DIR)) && !yaml)
2590 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2592 if (verbose & VERBOSE_DETAIL) {
2593 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2594 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2595 " ", comp_v1->lcm_magic);
2596 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2597 " ", comp_v1->lcm_size);
2598 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_flags: %u\n",
2599 " ", comp_v1->lcm_flags);
2602 if (verbose & VERBOSE_GENERATION) {
2603 if (verbose & ~VERBOSE_GENERATION)
2604 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2606 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2609 if (verbose & VERBOSE_MIRROR_COUNT) {
2610 if (verbose & ~VERBOSE_MIRROR_COUNT)
2611 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2613 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2614 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2615 comp_v1->lcm_mirror_count + 1 : 1);
2618 if (verbose & VERBOSE_COMP_COUNT) {
2619 if (verbose & ~VERBOSE_COMP_COUNT)
2620 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2622 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2623 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2624 comp_v1->lcm_entry_count : 0);
2627 if (verbose & VERBOSE_DETAIL && !yaml)
2628 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2631 static void comp_flags2str(__u32 comp_flags)
2637 llapi_printf(LLAPI_MSG_NORMAL, "0");
2640 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2641 if (comp_flags & comp_flags_table[i].cfn_flag) {
2643 llapi_printf(LLAPI_MSG_NORMAL, ",");
2644 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2645 comp_flags_table[i].cfn_name);
2646 comp_flags &= ~comp_flags_table[i].cfn_flag;
2652 llapi_printf(LLAPI_MSG_NORMAL, ",");
2653 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2657 static void lov_dump_comp_v1_entry(struct find_param *param,
2658 enum lov_dump_flags flags, int index)
2660 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2661 struct lov_comp_md_entry_v1 *entry;
2662 char *separator = "";
2663 int verbose = param->fp_verbose;
2664 bool yaml = flags & LDF_YAML;
2666 entry = &comp_v1->lcm_entries[index];
2669 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2671 if (verbose & VERBOSE_COMP_ID) {
2672 if (verbose & VERBOSE_DETAIL && !yaml)
2673 llapi_printf(LLAPI_MSG_NORMAL,
2674 "%slcme_id: ", " - ");
2675 else if (verbose & ~VERBOSE_COMP_ID)
2676 llapi_printf(LLAPI_MSG_NORMAL,
2677 "%4slcme_id: ", " ");
2678 if (entry->lcme_id != LCME_ID_INVAL)
2679 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2681 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2685 if (verbose & VERBOSE_COMP_FLAGS) {
2686 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2687 if (verbose & ~VERBOSE_COMP_FLAGS)
2688 llapi_printf(LLAPI_MSG_NORMAL,
2689 "%4slcme_flags: ", " ");
2690 comp_flags2str(entry->lcme_flags);
2694 if (verbose & VERBOSE_COMP_START) {
2695 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2696 if (verbose & ~VERBOSE_COMP_START)
2697 llapi_printf(LLAPI_MSG_NORMAL,
2698 "%4slcme_extent.e_start: ", " ");
2699 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2700 entry->lcme_extent.e_start);
2704 if (verbose & VERBOSE_COMP_END) {
2705 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2706 if (verbose & ~VERBOSE_COMP_END)
2707 llapi_printf(LLAPI_MSG_NORMAL,
2708 "%4slcme_extent.e_end: ", " ");
2709 if (entry->lcme_extent.e_end == LUSTRE_EOF)
2710 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
2712 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2713 entry->lcme_extent.e_end);
2718 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2719 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2720 } else if (verbose & VERBOSE_DETAIL) {
2721 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2722 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
2723 " ", entry->lcme_offset);
2724 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
2725 " ", entry->lcme_size);
2726 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2728 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2732 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2733 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2735 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2736 * The table below gives the answers for the specified parameters (value and
2737 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2738 * --------------------------------------
2739 * 1 | file > limit; sign > 0 | -1 / -1 |
2740 * 2 | file = limit; sign > 0 | -1 / -1 |
2741 * 3 | file < limit; sign > 0 | ? / 1 |
2742 * 4 | file > limit; sign = 0 | -1 / -1 |
2743 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2744 * 6 | file < limit; sign = 0 | ? / -1 |
2745 * 7 | file > limit; sign < 0 | 1 / 1 |
2746 * 8 | file = limit; sign < 0 | ? / -1 |
2747 * 9 | file < limit; sign < 0 | ? / -1 |
2748 * --------------------------------------
2749 * Note: 5th actually means that the value is within the interval
2750 * (limit - margin, limit]. */
2751 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2752 int sign, int negopt, unsigned long long margin,
2758 /* Drop the fraction of margin (of days). */
2759 if (file + margin <= limit)
2761 } else if (sign == 0) {
2762 if (file <= limit && file + margin > limit)
2764 else if (file + margin <= limit)
2766 } else if (sign < 0) {
2773 return negopt ? ~ret + 1 : ret;
2776 static inline struct lov_user_md *
2777 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
2779 return (struct lov_user_md *)((char *)comp_v1 +
2780 comp_v1->lcm_entries[ent_idx].lcme_offset);
2783 static inline struct lov_user_ost_data_v1 *
2784 lov_v1v3_objects(struct lov_user_md *v1)
2786 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
2787 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
2789 return v1->lmm_objects;
2793 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
2795 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
2796 strlcpy(pool_name, ((struct lov_user_md_v3 *)v1)->lmm_pool_name,
2799 pool_name[0] = '\0';
2803 print_last_init_comp(struct find_param *param)
2805 /* print all component info */
2806 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
2809 /* print specific component info */
2810 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
2811 param->fp_check_comp_start || param->fp_check_comp_end)
2817 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
2821 if (param->fp_comp_end == LUSTRE_EOF) {
2822 if (param->fp_comp_end_sign == 0) /* equal to EOF */
2823 match = end == LUSTRE_EOF ? 1 : -1;
2824 else if (param->fp_comp_end_sign > 0) /* at most EOF */
2825 match = end == LUSTRE_EOF ? -1 : 1;
2826 else /* at least EOF */
2828 if (param->fp_exclude_comp_end)
2831 unsigned long long margin;
2833 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
2834 match = find_value_cmp(end, param->fp_comp_end,
2835 param->fp_comp_end_sign,
2836 param->fp_exclude_comp_end, margin, 0);
2843 * An example of "getstripe -v" for a two components PFL file:
2846 * lcm_magic: 0x0BD60BD0
2850 * lcm_entry_count: 2
2854 * lcme_extent.e_start: 0
2855 * lcme_extent.e_end: 1048576
2859 * lmm_magic: 0x0BD10BD0
2860 * lmm_seq: 0x200000401
2861 * lmm_object_id: 0x1
2862 * lmm_fid: [0x200000401:0x1:0x0]
2863 * lmm_stripe_count: 1
2864 * lmm_stripe_size: 1048576
2867 * lmm_stripe_offset: 0
2869 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
2873 * lcme_extent.e_start: 1048576
2874 * lcme_extent.e_end: EOF
2878 * lmm_magic: 0x0BD10BD0
2879 * lmm_seq: 0x200000401
2880 * lmm_object_id: 0x1
2881 * lmm_fid: [0x200000401:0x1:0x0]
2882 * lmm_stripe_count: 2
2883 * lmm_stripe_size: 1048576
2886 * lmm_stripe_offset: 1
2888 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
2889 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
2891 static void lov_dump_comp_v1(struct find_param *param, char *path,
2892 enum lov_dump_flags flags)
2894 struct lov_comp_md_entry_v1 *entry;
2895 struct lov_user_ost_data_v1 *objects;
2896 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2897 struct lov_user_md_v1 *v1;
2898 char pool_name[LOV_MAXPOOLNAME + 1];
2899 int obdindex = param->fp_obd_index;
2900 int i, j, match, obdstripe = 0;
2902 if (obdindex != OBD_NOT_FOUND) {
2903 for (i = 0; !(flags & LDF_IS_DIR) &&
2904 i < comp_v1->lcm_entry_count; i++) {
2905 if (!(comp_v1->lcm_entries[i].lcme_flags &
2909 v1 = lov_comp_entry(comp_v1, i);
2910 objects = lov_v1v3_objects(v1);
2912 for (j = 0; j < v1->lmm_stripe_count; j++) {
2913 if (obdindex == objects[j].l_ost_idx) {
2926 lov_dump_comp_v1_header(param, path, flags);
2928 flags |= LDF_INDENT;
2930 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2931 entry = &comp_v1->lcm_entries[i];
2933 if (param->fp_check_comp_flags) {
2934 if ((param->fp_exclude_comp_flags &&
2935 (param->fp_comp_flags & entry->lcme_flags)) ||
2936 (!param->fp_exclude_comp_flags &&
2937 !(param->fp_comp_flags & entry->lcme_flags)))
2941 if (param->fp_check_comp_id &&
2942 param->fp_comp_id != entry->lcme_id)
2945 if (param->fp_check_comp_start) {
2946 match = find_value_cmp(entry->lcme_extent.e_start,
2947 param->fp_comp_start,
2948 param->fp_comp_start_sign,
2950 param->fp_comp_start_units, 0);
2955 if (param->fp_check_comp_end) {
2956 match = find_comp_end_cmp(entry->lcme_extent.e_end,
2962 if (print_last_init_comp(param)) {
2964 * if part of stripe info is needed, we'd print only
2965 * the last instantiated component info.
2967 if (entry->lcme_flags & LCME_FL_INIT)
2973 if (entry->lcme_flags & LCME_FL_INIT)
2974 flags &= ~LDF_SKIP_OBJS;
2976 flags |= LDF_SKIP_OBJS;
2978 lov_dump_comp_v1_entry(param, flags, i);
2980 v1 = lov_comp_entry(comp_v1, i);
2981 objects = lov_v1v3_objects(v1);
2982 lov_v1v3_pool_name(v1, pool_name);
2984 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
2985 param->fp_max_depth, param->fp_verbose,
2988 if (print_last_init_comp(param)) {
2990 * directory layout contains only layout template, print the
2994 i = comp_v1->lcm_entry_count - 1;
2997 flags &= ~LDF_SKIP_OBJS;
2999 lov_dump_comp_v1_entry(param, flags, i);
3001 v1 = lov_comp_entry(comp_v1, i);
3002 objects = lov_v1v3_objects(v1);
3003 lov_v1v3_pool_name(v1, pool_name);
3005 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3006 param->fp_max_depth, param->fp_verbose,
3011 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3012 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3015 static inline bool has_any_comp_options(struct find_param *param)
3017 int verbose = param->fp_verbose;
3019 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3020 param->fp_check_comp_start || param->fp_check_comp_end ||
3021 param->fp_check_comp_flags)
3024 /* show full layout information, not component specific */
3025 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3028 return verbose & VERBOSE_COMP_OPTS;
3031 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3034 struct lov_user_md *lum = &orig->lmd_lmm;
3035 struct lov_user_mds_data *new;
3036 struct lov_comp_md_v1 *comp_v1;
3037 struct lov_comp_md_entry_v1 *ent;
3038 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3039 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3042 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3044 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3048 memcpy(new, orig, sizeof(lstat_t));
3050 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3051 comp_v1->lcm_magic = lum->lmm_magic;
3052 comp_v1->lcm_size = lum_off + lum_size;
3053 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3054 comp_v1->lcm_flags = 0;
3055 comp_v1->lcm_entry_count = 1;
3057 ent = &comp_v1->lcm_entries[0];
3059 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3060 ent->lcme_extent.e_start = 0;
3061 ent->lcme_extent.e_end = LUSTRE_EOF;
3062 ent->lcme_offset = lum_off;
3063 ent->lcme_size = lum_size;
3065 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3070 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3071 enum lov_dump_flags flags)
3073 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3075 if (has_any_comp_options(param)) {
3076 struct lov_user_mds_data *new_lmd, *orig_lmd;
3078 orig_lmd = param->fp_lmd;
3079 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3080 if (new_lmd != NULL) {
3081 param->fp_lmd = new_lmd;
3082 lov_dump_comp_v1(param, path, flags);
3083 param->fp_lmd = orig_lmd;
3089 if (magic == LOV_USER_MAGIC_V1) {
3090 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3091 param->fp_lmd->lmd_lmm.lmm_objects,
3092 path, param->fp_obd_index,
3093 param->fp_max_depth, param->fp_verbose,
3096 char pool_name[LOV_MAXPOOLNAME + 1];
3097 struct lov_user_ost_data_v1 *objects;
3098 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3100 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
3101 objects = lmmv3->lmm_objects;
3102 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3103 objects, path, param->fp_obd_index,
3104 param->fp_max_depth, param->fp_verbose,
3109 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3110 enum lov_dump_flags flags)
3114 if (param->fp_get_lmv || param->fp_get_default_lmv)
3115 magic = (__u32)param->fp_lmv_md->lum_magic;
3117 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3120 flags |= LDF_IS_RAW;
3125 case LOV_USER_MAGIC_V1:
3126 case LOV_USER_MAGIC_V3:
3127 lov_dump_plain_user_lmm(param, path, flags);
3130 case LMV_USER_MAGIC: {
3131 char pool_name[LOV_MAXPOOLNAME + 1];
3132 struct lmv_user_md *lum;
3134 lum = (struct lmv_user_md *)param->fp_lmv_md;
3135 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
3136 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3137 param->fp_max_depth, param->fp_verbose,
3141 case LOV_USER_MAGIC_COMP_V1:
3142 lov_dump_comp_v1(param, path, flags);
3145 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3146 "(expecting one of %#x %#x %#x %#x)\n",
3147 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3148 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3149 LMV_USER_MAGIC, LMV_MAGIC_V1);
3154 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3160 fname = strrchr(path, '/');
3162 /* It should be a file (or other non-directory) */
3163 if (fname == NULL) {
3164 dname = (char *)malloc(2);
3168 fname = (char *)path;
3170 dname = (char *)malloc(fname - path + 1);
3173 strncpy(dname, path, fname - path);
3174 dname[fname - path] = '\0';
3178 fd = open(dname, O_RDONLY | O_NONBLOCK);
3185 strcpy((char *)lum, fname);
3186 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3189 if (close(fd) == -1 && rc == 0)
3196 int llapi_file_lookup(int dirfd, const char *name)
3198 struct obd_ioctl_data data = { 0 };
3203 if (dirfd < 0 || name == NULL)
3206 data.ioc_version = OBD_IOCTL_VERSION;
3207 data.ioc_len = sizeof(data);
3208 data.ioc_inlbuf1 = (char *)name;
3209 data.ioc_inllen1 = strlen(name) + 1;
3211 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
3213 llapi_error(LLAPI_MSG_ERROR, rc,
3214 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3219 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3225 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3226 * Return -1 or 1 if file timestamp does not or does match the given criteria
3227 * correspondingly. Return 0 if the MDS time is being checked and there are
3228 * attributes on OSTs and it is not yet clear if the timespamp matches.
3230 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3231 * updated timestamps. */
3232 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3237 /* Check if file is accepted. */
3238 if (param->fp_atime) {
3239 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3240 param->fp_asign, param->fp_exclude_atime,
3247 if (param->fp_mtime) {
3248 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3249 param->fp_msign, param->fp_exclude_mtime,
3254 /* If the previous check matches, but this one is not yet clear,
3255 * we should return 0 to do an RPC on OSTs. */
3260 if (param->fp_ctime) {
3261 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3262 param->fp_csign, param->fp_exclude_ctime,
3267 /* If the previous check matches, but this one is not yet clear,
3268 * we should return 0 to do an RPC on OSTs. */
3277 * Check whether the stripes matches the indexes user provided
3281 static int check_obd_match(struct find_param *param)
3283 struct lov_user_ost_data_v1 *objects;
3284 struct lov_comp_md_v1 *comp_v1 = NULL;
3285 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3286 lstat_t *st = ¶m->fp_lmd->lmd_st;
3287 int i, j, k, count = 1;
3289 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3292 if (!S_ISREG(st->st_mode))
3295 /* Only those files should be accepted, which have a
3296 * stripe on the specified OST. */
3297 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3298 comp_v1 = (struct lov_comp_md_v1 *)v1;
3299 count = comp_v1->lcm_entry_count;
3302 for (i = 0; i < count; i++) {
3304 v1 = lov_comp_entry(comp_v1, i);
3306 objects = lov_v1v3_objects(v1);
3308 for (j = 0; j < v1->lmm_stripe_count; j++) {
3309 for (k = 0; k < param->fp_num_obds; k++) {
3310 if (param->fp_obd_indexes[k] ==
3311 objects[j].l_ost_idx)
3312 return !param->fp_exclude_obd;
3317 return param->fp_exclude_obd;
3320 static int check_mdt_match(struct find_param *param)
3324 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3327 /* FIXME: For striped dir, we should get stripe information and check */
3328 for (i = 0; i < param->fp_num_mdts; i++) {
3329 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3330 return !param->fp_exclude_mdt;
3333 if (param->fp_exclude_mdt)
3340 * Check whether the obd is active or not, if it is
3341 * not active, just print the object affected by this
3344 static int print_failed_tgt(struct find_param *param, char *path, int type)
3346 struct obd_statfs stat_buf;
3347 struct obd_uuid uuid_buf;
3350 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3353 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3354 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3355 ret = llapi_obd_statfs(path, type,
3356 param->fp_obd_index, &stat_buf,
3359 llapi_printf(LLAPI_MSG_NORMAL,
3360 "obd_uuid: %s failed %s ",
3361 param->fp_obd_uuid->uuid,
3368 static int find_check_stripe_size(struct find_param *param)
3370 struct lov_comp_md_v1 *comp_v1 = NULL;
3371 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3372 int ret, i, count = 1;
3374 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3375 comp_v1 = (struct lov_comp_md_v1 *)v1;
3376 count = comp_v1->lcm_entry_count;
3377 ret = param->fp_exclude_stripe_size ? 1 : -1;
3380 for (i = 0; i < count; i++) {
3382 v1 = lov_comp_entry(comp_v1, i);
3384 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3385 param->fp_stripe_size_sign,
3386 param->fp_exclude_stripe_size,
3387 param->fp_stripe_size_units, 0);
3388 /* If any stripe_size matches */
3396 static __u32 find_get_stripe_count(struct find_param *param)
3398 struct lov_comp_md_v1 *comp_v1 = NULL;
3399 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3401 __u32 stripe_count = 0;
3403 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3404 comp_v1 = (struct lov_comp_md_v1 *)v1;
3405 count = comp_v1->lcm_entry_count;
3408 for (i = 0; i < count; i++) {
3410 v1 = lov_comp_entry(comp_v1, i);
3411 stripe_count += v1->lmm_stripe_count;
3414 return stripe_count;
3417 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3419 static int find_check_layout(struct find_param *param)
3421 struct lov_comp_md_v1 *comp_v1 = NULL;
3422 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3424 bool found = false, valid = false;
3426 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3427 comp_v1 = (struct lov_comp_md_v1 *)v1;
3428 count = comp_v1->lcm_entry_count;
3431 for (i = 0; i < count; i++) {
3433 v1 = lov_comp_entry(comp_v1, i);
3435 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3439 if (v1->lmm_pattern & param->fp_layout) {
3448 if ((found && !param->fp_exclude_layout) ||
3449 (!found && param->fp_exclude_layout))
3455 static int find_check_pool(struct find_param *param)
3457 struct lov_comp_md_v1 *comp_v1 = NULL;
3458 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3459 struct lov_user_md_v3 *v3 = (void *)v1;
3463 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3464 comp_v1 = (struct lov_comp_md_v1 *)v1;
3465 count = comp_v1->lcm_entry_count;
3466 /* empty requested pool is taken as no pool search */
3467 if (count == 0 && param->fp_poolname[0] == '\0')
3471 for (i = 0; i < count; i++) {
3472 if (comp_v1 != NULL)
3473 v1 = lov_comp_entry(comp_v1, i);
3475 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3476 (param->fp_poolname[0] == '\0')) ||
3477 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3478 (strncmp(v3->lmm_pool_name,
3479 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3480 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3481 (strcmp(param->fp_poolname, "*") == 0))) {
3487 if ((found && !param->fp_exclude_pool) ||
3488 (!found && param->fp_exclude_pool))
3494 static int find_check_comp_options(struct find_param *param)
3496 lstat_t *st = ¶m->fp_lmd->lmd_st;
3497 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3498 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3499 struct lov_comp_md_entry_v1 *entry;
3502 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3503 comp_v1 = (struct lov_comp_md_v1 *)v1;
3505 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3506 if (forged_v1 == NULL)
3508 comp_v1 = forged_v1;
3509 comp_v1->lcm_entry_count = 1;
3510 entry = &comp_v1->lcm_entries[0];
3511 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3512 entry->lcme_extent.e_start = 0;
3513 entry->lcme_extent.e_end = LUSTRE_EOF;
3516 /* invalid case, don't match for any kind of search. */
3517 if (comp_v1->lcm_entry_count == 0) {
3522 if (param->fp_check_comp_count) {
3523 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3524 param->fp_comp_count,
3525 param->fp_comp_count_sign,
3526 param->fp_exclude_comp_count, 1, 0);
3532 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3533 entry = &comp_v1->lcm_entries[i];
3535 if (param->fp_check_comp_flags) {
3536 if (((entry->lcme_flags & param->fp_comp_flags) &&
3537 param->fp_exclude_comp_flags) ||
3538 (!(entry->lcme_flags & param->fp_comp_flags) &&
3539 !param->fp_exclude_comp_flags))
3548 if (param->fp_check_comp_start) {
3549 ret = find_value_cmp(entry->lcme_extent.e_start,
3550 param->fp_comp_start,
3551 param->fp_comp_start_sign,
3552 param->fp_exclude_comp_start,
3553 param->fp_comp_start_units, 0);
3558 if (param->fp_check_comp_end) {
3559 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3565 /* the component matches all criteria */
3569 if (forged_v1 != NULL)
3574 static bool find_check_lmm_info(struct find_param *param)
3576 return param->fp_check_pool || param->fp_check_stripe_count ||
3577 param->fp_check_stripe_size || param->fp_check_layout ||
3578 param->fp_check_comp_count || param->fp_check_comp_end ||
3579 param->fp_check_comp_start || param->fp_check_comp_flags ||
3580 param->fp_check_projid;
3584 * Get file/directory project id.
3585 * by the open fd resides on.
3586 * Return 0 and project id on success, or -ve errno.
3588 static int fget_projid(int fd, int *projid)
3593 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3597 *projid = fsx.fsx_projid;
3601 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3602 void *data, struct dirent64 *de)
3604 struct find_param *param = (struct find_param *)data;
3605 DIR *dir = dirp == NULL ? NULL : *dirp;
3606 int decision = 1; /* 1 is accepted; -1 is rejected. */
3607 lstat_t *st = ¶m->fp_lmd->lmd_st;
3609 int checked_type = 0;
3611 __u32 stripe_count = 0;
3614 if (parent == NULL && dir == NULL)
3617 /* If a regular expression is presented, make the initial decision */
3618 if (param->fp_pattern != NULL) {
3619 char *fname = strrchr(path, '/');
3620 fname = (fname == NULL ? path : fname + 1);
3621 ret = fnmatch(param->fp_pattern, fname, 0);
3622 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3623 (ret == 0 && param->fp_exclude_pattern))
3627 /* See if we can check the file type from the dirent. */
3628 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3631 if (DTTOIF(de->d_type) == param->fp_type) {
3632 if (param->fp_exclude_type)
3635 if (!param->fp_exclude_type)
3642 /* Request MDS for the stat info if some of these parameters need
3643 * to be compared. */
3644 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3645 param->fp_check_uid || param->fp_check_gid ||
3646 param->fp_atime || param->fp_mtime || param->fp_ctime ||
3647 param->fp_check_size || find_check_lmm_info(param) ||
3648 param->fp_check_mdt_count || param->fp_check_hash_type)
3651 if (param->fp_type != 0 && checked_type == 0)
3654 if (decision == 0) {
3655 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
3656 param->fp_get_lmv = 1;
3657 ret = cb_get_dirstripe(path, dir, param);
3662 param->fp_lmd->lmd_lmm.lmm_magic = 0;
3663 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
3664 param->fp_lum_size);
3665 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
3666 find_check_lmm_info(param)) {
3667 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
3669 /* We need to "fake" the "use the default" values
3670 * since the lmm struct is zeroed out at this point. */
3671 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3672 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
3674 ostid_set_seq(&lmm->lmm_oi,
3675 FID_SEQ_LOV_DEFAULT);
3676 lmm->lmm_stripe_size = 0;
3677 lmm->lmm_stripe_count = 0;
3678 lmm->lmm_stripe_offset = -1;
3680 if (ret == 0 && param->fp_mdt_uuid != NULL) {
3682 ret = llapi_file_fget_mdtidx(dirfd(dir),
3683 ¶m->fp_file_mdt_index);
3684 } else if (S_ISREG(st->st_mode)) {
3685 /* FIXME: we could get the MDT index from the
3686 * file's FID in lmd->lmd_lmm.lmm_oi without
3687 * opening the file, once we are sure that
3688 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
3689 * That would still be an ioctl() to map the
3690 * FID to the MDT, but not an open RPC. */
3691 fd = open(path, O_RDONLY);
3693 ret = llapi_file_fget_mdtidx(fd,
3694 ¶m->fp_file_mdt_index);
3699 /* For a special file, we assume it resides on
3700 * the same MDT as the parent directory. */
3701 ret = llapi_file_fget_mdtidx(dirfd(parent),
3702 ¶m->fp_file_mdt_index);
3713 stripe_count = find_get_stripe_count(param);
3717 if (param->fp_type && !checked_type) {
3718 if ((st->st_mode & S_IFMT) == param->fp_type) {
3719 if (param->fp_exclude_type)
3722 if (!param->fp_exclude_type)
3728 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
3729 if (lustre_fs && param->fp_got_uuids &&
3730 param->fp_dev != st->st_dev) {
3731 /* A lustre/lustre mount point is crossed. */
3732 param->fp_got_uuids = 0;
3733 param->fp_obds_printed = 0;
3734 param->fp_mdt_index = OBD_NOT_FOUND;
3735 param->fp_obd_index = OBD_NOT_FOUND;
3738 if (lustre_fs && !param->fp_got_uuids) {
3739 ret = setup_target_indexes(dir ? dir : parent, path,
3744 param->fp_dev = st->st_dev;
3745 } else if (!lustre_fs && param->fp_got_uuids) {
3746 /* A lustre/non-lustre mount point is crossed. */
3747 param->fp_got_uuids = 0;
3748 param->fp_mdt_index = OBD_NOT_FOUND;
3749 param->fp_obd_index = OBD_NOT_FOUND;
3753 if (param->fp_check_stripe_size) {
3754 decision = find_check_stripe_size(param);
3759 if (param->fp_check_stripe_count) {
3760 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
3761 param->fp_stripe_count_sign,
3762 param->fp_exclude_stripe_count, 1, 0);
3767 if (param->fp_check_mdt_count) {
3768 decision = find_value_cmp(
3769 param->fp_lmv_md->lum_stripe_count,
3770 param->fp_mdt_count,
3771 param->fp_mdt_count_sign,
3772 param->fp_exclude_mdt_count, 1, 0);
3777 if (param->fp_check_layout) {
3778 decision = find_check_layout(param);
3783 if (param->fp_check_hash_type) {
3786 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
3787 if ((found && param->fp_exclude_hash_type) ||
3788 (!found && !param->fp_exclude_hash_type)) {
3794 /* If an OBD UUID is specified but none matches, skip this file. */
3795 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
3796 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
3799 /* If an OST or MDT UUID is given, and some OST matches,
3801 if (param->fp_obd_index != OBD_NOT_FOUND ||
3802 param->fp_mdt_index != OBD_NOT_FOUND) {
3803 if (param->fp_obd_uuid) {
3804 if (check_obd_match(param)) {
3805 /* If no mdtuuid is given, we are done.
3806 * Otherwise, fall through to the mdtuuid
3808 if (!param->fp_mdt_uuid)
3815 if (param->fp_mdt_uuid) {
3816 if (check_mdt_match(param))
3823 if (param->fp_check_uid) {
3824 if (st->st_uid == param->fp_uid) {
3825 if (param->fp_exclude_uid)
3828 if (!param->fp_exclude_uid)
3833 if (param->fp_check_gid) {
3834 if (st->st_gid == param->fp_gid) {
3835 if (param->fp_exclude_gid)
3838 if (!param->fp_exclude_gid)
3843 if (param->fp_check_projid) {
3847 fd = open(path, O_RDONLY);
3850 ret = fget_projid(fd, &projid);
3855 if (projid == param->fp_projid) {
3856 if (param->fp_exclude_uid)
3859 if (!param->fp_exclude_projid)
3864 if (param->fp_check_pool) {
3865 decision = find_check_pool(param);
3870 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
3871 param->fp_check_comp_start || param->fp_check_comp_end) {
3872 decision = find_check_comp_options(param);
3877 /* Check the time on mds. */
3879 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
3882 for_mds = lustre_fs ?
3883 (S_ISREG(st->st_mode) && stripe_count) : 0;
3884 decision = find_time_check(st, param, for_mds);
3889 /* If file still fits the request, ask ost for updated info.
3890 The regular stat is almost of the same speed as some new
3891 'glimpse-size-ioctl'. */
3893 if (param->fp_check_size && S_ISREG(st->st_mode) && stripe_count)
3896 if (param->fp_check_size && S_ISDIR(st->st_mode))
3900 /* For regular files with the stripe the decision may have not
3901 * been taken yet if *time or size is to be checked. */
3902 if (param->fp_obd_index != OBD_NOT_FOUND)
3903 print_failed_tgt(param, path, LL_STATFS_LOV);
3905 if (param->fp_mdt_index != OBD_NOT_FOUND)
3906 print_failed_tgt(param, path, LL_STATFS_LMV);
3909 ret = fstat_f(dirfd(dir), st);
3910 else if (de != NULL)
3911 ret = fstatat_f(dirfd(parent), de->d_name, st,
3912 AT_SYMLINK_NOFOLLOW);
3914 ret = lstat_f(path, st);
3917 if (errno == ENOENT) {
3918 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
3919 "warning: %s: %s does not exist",
3924 llapi_error(LLAPI_MSG_ERROR, ret,
3925 "%s: IOC_LOV_GETINFO on %s failed",
3931 /* Check the time on osc. */
3932 decision = find_time_check(st, param, 0);
3937 if (param->fp_check_size)
3938 decision = find_value_cmp(st->st_size, param->fp_size,
3939 param->fp_size_sign,
3940 param->fp_exclude_size,
3941 param->fp_size_units, 0);
3943 if (decision != -1) {
3944 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
3945 if (param->fp_zero_end)
3946 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
3948 llapi_printf(LLAPI_MSG_NORMAL, "\n");
3953 /* Do not get down anymore? */
3954 if (param->fp_depth == param->fp_max_depth) {
3965 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
3966 void *param_data, struct dirent64 *de)
3968 struct find_param *param = (struct find_param *)param_data;
3969 DIR *tmp_parent = parent;
3970 char raw[MAX_IOC_BUFLEN] = {'\0'};
3972 struct obd_ioctl_data data = { 0 };
3979 if (parent == NULL && dirp == NULL)
3985 if (parent == NULL) {
3986 tmp_parent = opendir_parent(path);
3987 if (tmp_parent == NULL) {
3990 llapi_error(LLAPI_MSG_ERROR, ret,
3991 "can not open %s", path);
3996 fd = dirfd(tmp_parent);
3998 path_copy = strdup(path);
3999 filename = basename(path_copy);
4000 data.ioc_inlbuf1 = (char *)filename;
4001 data.ioc_inllen1 = strlen(filename) + 1;
4002 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4003 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4004 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4006 llapi_error(LLAPI_MSG_ERROR, ret,
4007 "llapi_obd_statfs: error packing ioctl data");
4012 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4014 if (errno == EBUSY && !retry) {
4015 /* because migrate may not be able to lock all involved
4016 * objects in order, for some of them it try lock, while
4017 * there may be conflicting COS locks and cause migrate
4018 * fail with EBUSY, hope a sync() could cause
4019 * transaction commit and release these COS locks. */
4025 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4026 path, strerror(-ret), ret);
4028 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4029 fprintf(stdout, "migrate %s to MDT%d\n",
4030 path, param->fp_mdt_index);
4035 /* If the directory is being migration, we need
4036 * close the directory after migration,
4037 * so the old directory cache will be cleanup
4038 * on the client side, and re-open to get the
4039 * new directory handle */
4040 *dirp = opendir(path);
4041 if (*dirp == NULL) {
4043 llapi_error(LLAPI_MSG_ERROR, ret,
4044 "%s: Failed to open '%s'", __func__, path);
4049 closedir(tmp_parent);
4056 int llapi_migrate_mdt(char *path, struct find_param *param)
4058 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4061 int llapi_mv(char *path, struct find_param *param)
4063 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4064 static bool printed;
4067 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4068 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4072 return llapi_migrate_mdt(path, param);
4075 int llapi_find(char *path, struct find_param *param)
4077 return param_callback(path, cb_find_init, cb_common_fini, param);
4081 * Get MDT number that the file/directory inode referenced
4082 * by the open fd resides on.
4083 * Return 0 and mdtidx on success, or -ve errno.
4085 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4087 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4092 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4093 struct dirent64 *de)
4095 struct find_param *param = (struct find_param *)data;
4096 DIR *d = dirp == NULL ? NULL : *dirp;
4100 if (parent == NULL && d == NULL)
4104 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4105 } else /* if (parent) */ {
4108 fd = open(path, O_RDONLY | O_NOCTTY);
4110 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4118 if (ret == -ENODATA) {
4119 if (!param->fp_obd_uuid)
4120 llapi_printf(LLAPI_MSG_NORMAL,
4121 "'%s' has no stripe info\n", path);
4123 } else if (ret == -ENOENT) {
4124 llapi_error(LLAPI_MSG_WARN, ret,
4125 "warning: %s: '%s' does not exist",
4128 } else if (ret == -ENOTTY) {
4129 llapi_error(LLAPI_MSG_ERROR, ret,
4130 "%s: '%s' not on a Lustre fs",
4133 llapi_error(LLAPI_MSG_ERROR, ret,
4134 "error: %s: '%s' failed get_mdtidx",
4140 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4141 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4143 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4147 /* Do not go down anymore? */
4148 if (param->fp_depth == param->fp_max_depth)
4156 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4157 struct dirent64 *de)
4159 struct find_param *param = (struct find_param *)data;
4160 DIR *d = dirp == NULL ? NULL : *dirp;
4163 if (parent == NULL && d == NULL)
4166 if (param->fp_obd_uuid) {
4167 param->fp_quiet = 1;
4168 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4174 if (param->fp_get_lmv || param->fp_get_default_lmv) {
4175 ret = cb_get_dirstripe(path, d, param);
4177 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
4178 (void *)¶m->fp_lmd->lmd_lmm);
4181 } else if (parent && !param->fp_get_lmv && !param->fp_get_default_lmv) {
4182 char *fname = strrchr(path, '/');
4183 fname = (fname == NULL ? path : fname + 1);
4185 strlcpy((char *)¶m->fp_lmd->lmd_lmm, fname,
4186 param->fp_lum_size);
4188 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
4189 (void *)¶m->fp_lmd->lmd_lmm);
4195 if (errno == ENODATA && d != NULL) {
4196 /* We need to "fake" the "use the default" values
4197 * since the lmm struct is zeroed out at this point.
4198 * The magic needs to be set in order to satisfy
4199 * a check later on in the code path.
4200 * The object_seq needs to be set for the "(Default)"
4201 * prefix to be displayed. */
4202 if (param->fp_get_default_lmv) {
4203 struct lmv_user_md *lum = param->fp_lmv_md;
4205 lum->lum_magic = LMV_USER_MAGIC;
4206 lum->lum_stripe_count = 0;
4207 lum->lum_stripe_offset = -1;
4209 } else if (param->fp_get_lmv) {
4210 struct lmv_user_md *lum = param->fp_lmv_md;
4213 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4216 lum->lum_magic = LMV_MAGIC_V1;
4217 lum->lum_stripe_count = 0;
4218 lum->lum_stripe_offset = mdtidx;
4221 struct lov_user_md *lmm =
4222 ¶m->fp_lmd->lmd_lmm;
4224 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4226 ostid_set_seq(&lmm->lmm_oi,
4227 FID_SEQ_LOV_DEFAULT);
4228 lmm->lmm_stripe_count = 0;
4229 lmm->lmm_stripe_size = 0;
4230 lmm->lmm_stripe_offset = -1;
4233 } else if (errno == ENODATA && parent != NULL) {
4234 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4235 llapi_printf(LLAPI_MSG_NORMAL,
4236 "%s has no stripe info\n", path);
4238 } else if (errno == ENOENT) {
4239 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4240 "warning: %s: %s does not exist",
4243 } else if (errno == ENOTTY) {
4245 llapi_error(LLAPI_MSG_ERROR, ret,
4246 "%s: '%s' not on a Lustre fs?",
4251 llapi_error(LLAPI_MSG_ERROR, ret,
4252 "error: %s: %s failed for %s",
4253 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4254 "IOC_MDC_GETFILESTRIPE", path);
4261 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4262 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4265 /* Do not get down anymore? */
4266 if (param->fp_depth == param->fp_max_depth)
4274 int llapi_getstripe(char *path, struct find_param *param)
4276 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4277 cb_get_mdt_index : cb_getstripe,
4278 cb_common_fini, param);
4281 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4282 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4284 char raw[MAX_IOC_BUFLEN] = {'\0'};
4286 struct obd_ioctl_data data = { 0 };
4289 data.ioc_inlbuf1 = (char *)&type;
4290 data.ioc_inllen1 = sizeof(__u32);
4291 data.ioc_inlbuf2 = (char *)&index;
4292 data.ioc_inllen2 = sizeof(__u32);
4293 data.ioc_pbuf1 = (char *)stat_buf;
4294 data.ioc_plen1 = sizeof(struct obd_statfs);
4295 data.ioc_pbuf2 = (char *)uuid_buf;
4296 data.ioc_plen2 = sizeof(struct obd_uuid);
4298 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4300 llapi_error(LLAPI_MSG_ERROR, rc,
4301 "llapi_obd_statfs: error packing ioctl data");
4305 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4307 return rc < 0 ? -errno : 0;
4310 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4311 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4316 fd = open(path, O_RDONLY);
4319 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4321 /* If we can't even open a file on the filesystem (e.g. with
4322 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4326 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4333 #define MAX_STRING_SIZE 128
4335 int llapi_ping(char *obd_type, char *obd_name)
4341 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4342 obd_type, obd_name);
4346 fd = open(path.gl_pathv[0], O_WRONLY);
4349 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4354 /* The purpose is to send a byte as a ping, whatever this byte is. */
4355 /* coverity[uninit_use_in_call] */
4356 rc = write(fd, buf, 1);
4364 cfs_free_param_data(&path);
4368 int llapi_target_iterate(int type_num, char **obd_type,
4369 void *args, llapi_cb_t cb)
4371 char buf[MAX_STRING_SIZE];
4376 rc = cfs_get_param_paths(¶m, "devices");
4380 fp = fopen(param.gl_pathv[0], "r");
4383 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4388 while (fgets(buf, sizeof(buf), fp) != NULL) {
4389 char *obd_type_name = NULL;
4390 char *obd_name = NULL;
4391 char *obd_uuid = NULL;
4393 struct obd_statfs osfs_buffer;
4395 while(bufp[0] == ' ')
4398 for(i = 0; i < 3; i++) {
4399 obd_type_name = strsep(&bufp, " ");
4401 obd_name = strsep(&bufp, " ");
4402 obd_uuid = strsep(&bufp, " ");
4404 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4406 for (i = 0; i < type_num; i++) {
4407 if (strcmp(obd_type_name, obd_type[i]) != 0)
4410 cb(obd_type_name, obd_name, obd_uuid, args);
4415 cfs_free_param_data(¶m);
4419 static void do_target_check(char *obd_type_name, char *obd_name,
4420 char *obd_uuid, void *args)
4424 rc = llapi_ping(obd_type_name, obd_name);
4425 if (rc == ENOTCONN) {
4426 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4428 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4430 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4434 int llapi_target_check(int type_num, char **obd_type, char *dir)
4436 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4439 #undef MAX_STRING_SIZE
4441 /* Is this a lustre fs? */
4442 int llapi_is_lustre_mnttype(const char *type)
4444 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4447 /* Is this a lustre client fs? */
4448 int llapi_is_lustre_mnt(struct mntent *mnt)
4450 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4451 strstr(mnt->mnt_fsname, ":/") != NULL);
4454 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4456 char fsname[PATH_MAX + 1];
4460 rc = llapi_search_fsname(mnt, fsname);
4462 llapi_err_noerrno(LLAPI_MSG_ERROR,
4463 "'%s' isn't on Lustre filesystem", mnt);
4467 root = open(mnt, O_RDONLY | O_DIRECTORY);
4470 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4474 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4482 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4483 * format must have %s%s, buf must be > 16
4484 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4485 * then buf = "lustre-MDT0000"
4487 static int get_mdtname(char *name, char *format, char *buf)
4489 char suffix[]="-MDT0000";
4490 int len = strlen(name);
4492 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4493 name[len - 5] = '\0';
4498 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4501 /* Not enough room to add suffix */
4502 llapi_err_noerrno(LLAPI_MSG_ERROR,
4503 "MDT name too long |%s|", name);
4508 return sprintf(buf, format, name, suffix);
4511 /** ioctl on filsystem root, with mdtindex sent as data
4512 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4513 * \param mdtidxp pointer to integer within data to be filled in with the
4514 * mdt index (0 if no mdt is specified). NULL won't be filled.
4516 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4524 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4525 Open root and parse mdt index. */
4526 if (mdtname[0] == '/') {
4528 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4529 (char *)mdtname, -1);
4531 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4533 ptr = fsname + strlen(fsname) - 8;
4535 index = strtol(ptr + 4, NULL, 16);
4536 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4540 llapi_err_noerrno(LLAPI_MSG_ERROR,
4541 "Can't open %s: %d\n", mdtname, rc);
4548 rc = ioctl(fd, opc, data);
4557 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4558 int buflen, long long *recno, int *linkno)
4560 const char *fidstr_orig = fidstr;
4562 struct getinfo_fid2path *gf;
4565 while (*fidstr == '[')
4568 sscanf(fidstr, SFID, RFID(&fid));
4569 if (!fid_is_sane(&fid)) {
4570 llapi_err_noerrno(LLAPI_MSG_ERROR,
4571 "bad FID format '%s', should be [seq:oid:ver]"
4572 " (e.g. "DFID")\n", fidstr_orig,
4573 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4577 gf = malloc(sizeof(*gf) + buflen);
4582 gf->gf_recno = *recno;
4583 gf->gf_linkno = *linkno;
4584 gf->gf_pathlen = buflen;
4586 /* Take path or fsname */
4587 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4591 memcpy(buf, gf->gf_u.gf_path, gf->gf_pathlen);
4592 if (buf[0] == '\0') { /* ROOT path */
4596 *recno = gf->gf_recno;
4597 *linkno = gf->gf_linkno;
4604 static int fid_from_lma(const char *path, int fd, lustre_fid *fid)
4607 struct lustre_mdt_attrs *lma;
4611 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4613 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4616 lma = (struct lustre_mdt_attrs *)buf;
4617 fid_le_to_cpu(fid, &lma->lma_self_fid);
4621 int llapi_get_mdt_index_by_fid(int fd, const lustre_fid *fid,
4626 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4635 int llapi_fd2fid(int fd, lustre_fid *fid)
4639 memset(fid, 0, sizeof(*fid));
4641 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4642 if (rc == -EINVAL || rc == -ENOTTY)
4643 rc = fid_from_lma(NULL, fd, fid);
4648 int llapi_path2fid(const char *path, lustre_fid *fid)
4652 memset(fid, 0, sizeof(*fid));
4653 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4655 if (errno == ELOOP || errno == ENXIO)
4656 return fid_from_lma(path, -1, fid);
4660 rc = llapi_fd2fid(fd, fid);
4661 if (rc == -EINVAL || rc == -ENOTTY)
4662 rc = fid_from_lma(path, -1, fid);
4668 int llapi_fd2parent(int fd, unsigned int linkno, lustre_fid *parent_fid,
4669 char *name, size_t name_size)
4671 struct getparent *gp;
4674 gp = malloc(sizeof(*gp) + name_size);
4678 gp->gp_linkno = linkno;
4679 gp->gp_name_size = name_size;
4681 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4687 *parent_fid = gp->gp_fid;
4689 strncpy(name, gp->gp_name, name_size);
4690 name[name_size - 1] = '\0';
4697 int llapi_path2parent(const char *path, unsigned int linkno,
4698 lustre_fid *parent_fid, char *name, size_t name_size)
4703 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4707 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4712 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4717 root = open(mnt, O_RDONLY | O_DIRECTORY);
4720 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4724 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
4727 llapi_error(LLAPI_MSG_ERROR, rc,
4728 "ioctl on %s for getting connect flags failed", mnt);
4735 * Get a 64-bit value representing the version of file data pointed by fd.
4737 * Each write or truncate, flushed on OST, will change this value. You can use
4738 * this value to verify if file data was modified. This only checks the file
4739 * data, not metadata.
4741 * \param flags 0: no flush pages, usually used it the process has already
4743 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4745 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4746 * pages from clients.
4748 * \retval 0 on success.
4749 * \retval -errno on error.
4751 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4754 struct ioc_data_version idv;
4756 idv.idv_flags = (__u32)flags;
4758 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4762 *data_version = idv.idv_version;
4768 * Fetch layout version from OST objects. Layout version on OST objects are
4769 * only set when the file is a mirrored file AND after the file has been
4770 * written at least once.
4772 * It actually fetches the least layout version from the objects.
4774 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
4777 struct ioc_data_version idv = { 0 };
4779 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4783 *layout_version = idv.idv_layout_version;
4789 * Create a file without any name open it for read/write
4791 * - file is created as if it were a standard file in the given \a directory
4792 * - file does not appear in \a directory and mtime does not change because
4793 * the filename is handled specially by the Lustre MDS.
4794 * - file is removed at final close
4795 * - file modes are rw------- since it doesn't make sense to have a read-only
4796 * or write-only file that cannot be opened again.
4797 * - if user wants another mode it must use fchmod() on the open file, no
4798 * security problems arise because it cannot be opened by another process.
4800 * \param[in] directory directory from which to inherit layout/MDT idx
4801 * \param[in] idx MDT index on which the file is created,
4802 * \a idx == -1 means no specific MDT is requested
4803 * \param[in] open_flags standard open(2) flags
4805 * \retval 0 on success.
4806 * \retval -errno on error.
4808 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
4810 char file_path[PATH_MAX];
4811 char filename[PATH_MAX];
4812 int saved_errno = errno;
4820 snprintf(filename, sizeof(filename),
4821 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
4823 snprintf(filename, sizeof(filename),
4824 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
4826 rc = snprintf(file_path, sizeof(file_path),
4827 "%s/%s", directory, filename);
4828 if (rc >= sizeof(file_path))
4831 fd = open(file_path,
4832 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
4834 } while (fd < 0 && errno == EEXIST);
4837 llapi_error(LLAPI_MSG_ERROR, errno,
4838 "Cannot create volatile file '%s' in '%s'",
4839 filename + LUSTRE_VOLATILE_HDR_LEN,
4844 /* Unlink file in case this wasn't a Lustre filesystem and the
4845 * magic volatile filename wasn't handled as intended. The
4846 * effect is the same. If volatile open was supported then we
4847 * expect unlink() to return -ENOENT. */
4848 (void)unlink(file_path);
4850 /* Since we are returning successfully we restore errno (and
4851 * mask out possible EEXIST from open() and ENOENT from
4853 errno = saved_errno;
4859 * Swap the layouts between 2 file descriptors
4860 * the 2 files must be open for writing
4861 * first fd received the ioctl, second fd is passed as arg
4862 * this is assymetric but avoid use of root path for ioctl
4864 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
4865 int gid, __u64 flags)
4867 struct lustre_swap_layouts lsl;
4872 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
4873 rc = fstat(fd1, &st1);
4877 rc = fstat(fd2, &st2);
4882 lsl.sl_flags = flags;
4886 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
4890 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
4891 struct timeval tv1[2];
4892 struct timeval tv2[2];
4894 memset(tv1, 0, sizeof(tv1));
4895 memset(tv2, 0, sizeof(tv2));
4897 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
4898 tv1[0].tv_sec = st1.st_atime;
4899 tv2[0].tv_sec = st2.st_atime;
4901 tv1[0].tv_sec = st2.st_atime;
4902 tv2[0].tv_sec = st1.st_atime;
4905 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
4906 tv1[1].tv_sec = st1.st_mtime;
4907 tv2[1].tv_sec = st2.st_mtime;
4909 tv1[1].tv_sec = st2.st_mtime;
4910 tv2[1].tv_sec = st1.st_mtime;
4913 rc = futimes(fd1, tv1);
4917 rc = futimes(fd2, tv2);
4925 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
4932 while (grp_id == 0);
4934 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
4942 * Swap the layouts between 2 files
4943 * the 2 files are open in write
4945 int llapi_swap_layouts(const char *path1, const char *path2,
4946 __u64 dv1, __u64 dv2, __u64 flags)
4950 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
4953 llapi_error(LLAPI_MSG_ERROR, rc,
4954 "error: cannot open '%s' for write", path1);
4958 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
4961 llapi_error(LLAPI_MSG_ERROR, rc,
4962 "error: cannot open '%s' for write", path2);
4966 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
4968 llapi_error(LLAPI_MSG_ERROR, rc,
4969 "error: cannot swap layout between '%s' and '%s'",
4980 * Attempt to open a file with Lustre file identifier \a fid
4981 * and return an open file descriptor.
4983 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
4984 * \param[in] fid Lustre file identifier of file to open
4985 * \param[in] flags open() flags
4987 * \retval non-negative file descriptor on successful open
4988 * \retval -1 if an error occurred
4990 int llapi_open_by_fid(const char *lustre_dir, const lustre_fid *fid, int flags)
4992 char mntdir[PATH_MAX];
4993 char path[PATH_MAX];
4996 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5000 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5001 return open(path, flags);
5007 * \param fd File to lock.
5008 * \param gid Group Identifier.
5010 * \retval 0 on success.
5011 * \retval -errno on failure.
5013 int llapi_group_lock(int fd, int gid)
5017 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5020 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5028 * \param fd File to unlock.
5029 * \param gid Group Identifier.
5031 * \retval 0 on success.
5032 * \retval -errno on failure.
5034 int llapi_group_unlock(int fd, int gid)
5038 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5041 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");