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");
393 int llapi_dir_stripe_limit_check(int stripe_offset, int stripe_count,
398 if (!llapi_dir_stripe_index_is_valid(stripe_offset)) {
400 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
404 if (!llapi_dir_stripe_count_is_valid(stripe_count)) {
406 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
411 if (!llapi_dir_hash_type_is_valid(hash_type)) {
413 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad hash type %d",
421 * Trim a trailing newline from a string, if it exists.
423 int llapi_chomp_string(char *buf)
439 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
441 static int get_param_lov(const char *path, const char *param,
442 char *buf, size_t buf_size)
444 struct obd_uuid uuid;
447 rc = llapi_file_get_lov_uuid(path, &uuid);
451 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
456 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
458 static int get_param_lmv(const char *path, const char *param,
459 char *buf, size_t buf_size)
461 struct obd_uuid uuid;
464 rc = llapi_file_get_lmv_uuid(path, &uuid);
468 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
472 static int get_mds_md_size(const char *path)
474 char buf[PATH_MAX], inst[PATH_MAX];
475 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
478 rc = llapi_getname(path, inst, sizeof(inst));
482 /* Get the max ea size from llite parameters. */
483 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
484 "max_easize", buf, sizeof(buf));
490 return rc > 0 ? rc : md_size;
493 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
495 return get_param_lmv(path, "uuid", buf, bufsize);
499 * if pool is NULL, search tgtname in target_obd
500 * if pool is not NULL:
501 * if pool not found returns errno < 0
502 * if tgtname is NULL, returns 1 if pool is not empty and 0 if pool empty
503 * if tgtname is not NULL, returns 1 if OST is in pool and 0 if not
505 int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt)
507 char buffer[PATH_MAX];
513 /* You need one or the other */
514 if (poolname == NULL && fsname == NULL)
518 len = strlen(tgtname);
520 if (poolname == NULL && len == 0)
523 /* Search by poolname and fsname if is not NULL */
524 if (poolname != NULL) {
525 rc = poolpath(¶m, fsname, NULL);
527 snprintf(buffer, sizeof(buffer), "%s/%s",
528 param.gl_pathv[0], poolname);
530 } else if (fsname != NULL) {
531 rc = get_lustre_param_path(is_mdt ? "lmv" : "lov", fsname,
533 "target_obd", ¶m);
535 strncpy(buffer, param.gl_pathv[0],
541 cfs_free_param_data(¶m);
545 fd = fopen(buffer, "r");
549 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
550 if (poolname == NULL) {
552 /* Search for an tgtname in the list of targets
553 * Line format is IDX: fsname-OST/MDTxxxx_UUID STATUS */
554 ptr = strchr(buffer, ' ');
556 (strncmp(ptr + 1, tgtname, len) == 0)) {
561 /* Search for an tgtname in a pool,
562 * (or an existing non-empty pool if no tgtname) */
563 if ((tgtname == NULL) ||
564 (strncmp(buffer, tgtname, len) == 0)) {
574 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
576 return llapi_search_tgt(fsname, poolname, ostname, false);
580 * Open a Lustre file.
582 * \param name the name of the file to be opened
583 * \param flags access mode, see flags in open(2)
584 * \param mode permission of the file if it is created, see mode in open(2)
585 * \param param stripe pattern of the newly created file
587 * \retval file descriptor of opened file
588 * \retval negative errno on failure
590 int llapi_file_open_param(const char *name, int flags, mode_t mode,
591 const struct llapi_stripe_param *param)
593 char fsname[MAX_OBD_NAME + 1] = { 0 };
594 char *pool_name = param->lsp_pool;
595 struct lov_user_md *lum = NULL;
596 size_t lum_size = sizeof(*lum);
599 /* Make sure we are on a Lustre file system */
600 rc = llapi_search_fsname(name, fsname);
602 llapi_error(LLAPI_MSG_ERROR, rc,
603 "'%s' is not on a Lustre filesystem",
608 /* Check if the stripe pattern is sane. */
609 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
610 param->lsp_stripe_offset,
611 param->lsp_stripe_count,
612 param->lsp_stripe_pattern);
616 /* Make sure we have a good pool */
617 if (pool_name != NULL) {
618 /* in case user gives the full pool name <fsname>.<poolname>,
619 * strip the fsname */
620 char *ptr = strchr(pool_name, '.');
623 if (strcmp(pool_name, fsname) != 0) {
625 llapi_err_noerrno(LLAPI_MSG_ERROR,
626 "Pool '%s' is not on filesystem '%s'",
633 /* Make sure the pool exists and is non-empty */
634 rc = llapi_search_ost(fsname, pool_name, NULL);
636 char *err = rc == 0 ? "has no OSTs" : "does not exist";
638 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
639 fsname, pool_name, err);
643 lum_size = sizeof(struct lov_user_md_v3);
646 /* sanity check of target list */
647 if (param->lsp_is_specific) {
648 char ostname[MAX_OBD_NAME + 1];
652 for (i = 0; i < param->lsp_stripe_count; i++) {
653 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
654 fsname, param->lsp_osts[i]);
655 rc = llapi_search_ost(fsname, pool_name, ostname);
660 llapi_error(LLAPI_MSG_ERROR, rc,
661 "%s: cannot find OST %s in %s",
668 /* Make sure stripe offset is in OST list. */
669 if (param->lsp_osts[i] == param->lsp_stripe_offset)
673 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
674 "%s: stripe offset '%d' is not in the "
676 __func__, param->lsp_stripe_offset);
680 lum_size = lov_user_md_size(param->lsp_stripe_count,
681 LOV_USER_MAGIC_SPECIFIC);
684 lum = calloc(1, lum_size);
689 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
691 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
692 flags = O_DIRECTORY | O_RDONLY;
699 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
704 /* Initialize IOCTL striping pattern structure */
705 lum->lmm_magic = LOV_USER_MAGIC_V1;
706 lum->lmm_pattern = param->lsp_stripe_pattern;
707 lum->lmm_stripe_size = param->lsp_stripe_size;
708 lum->lmm_stripe_count = param->lsp_stripe_count;
709 lum->lmm_stripe_offset = param->lsp_stripe_offset;
710 if (pool_name != NULL) {
711 struct lov_user_md_v3 *lumv3 = (void *)lum;
713 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
714 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
716 if (param->lsp_is_specific) {
717 struct lov_user_md_v3 *lumv3 = (void *)lum;
720 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
721 if (pool_name == NULL) {
722 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
723 * OST list, therefore if pool is not specified we have
724 * to pack a null pool name for placeholder. */
725 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
728 for (i = 0; i < param->lsp_stripe_count; i++)
729 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
732 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
733 char *errmsg = "stripe already set";
736 if (errno != EEXIST && errno != EALREADY)
737 errmsg = strerror(errno);
739 llapi_err_noerrno(LLAPI_MSG_ERROR,
740 "error on ioctl %#jx for '%s' (%d): %s",
741 (uintmax_t)LL_IOC_LOV_SETSTRIPE, name, fd,
753 int llapi_file_open_pool(const char *name, int flags, int mode,
754 unsigned long long stripe_size, int stripe_offset,
755 int stripe_count, int stripe_pattern, char *pool_name)
757 const struct llapi_stripe_param param = {
758 .lsp_stripe_size = stripe_size,
759 .lsp_stripe_count = stripe_count,
760 .lsp_stripe_pattern = stripe_pattern,
761 .lsp_stripe_offset = stripe_offset,
762 .lsp_pool = pool_name
764 return llapi_file_open_param(name, flags, mode, ¶m);
767 int llapi_file_open(const char *name, int flags, int mode,
768 unsigned long long stripe_size, int stripe_offset,
769 int stripe_count, int stripe_pattern)
771 return llapi_file_open_pool(name, flags, mode, stripe_size,
772 stripe_offset, stripe_count,
773 stripe_pattern, NULL);
776 int llapi_file_create(const char *name, unsigned long long stripe_size,
777 int stripe_offset, int stripe_count, int stripe_pattern)
781 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
782 stripe_offset, stripe_count, stripe_pattern,
791 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
792 int stripe_offset, int stripe_count,
793 int stripe_pattern, char *pool_name)
797 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
798 stripe_offset, stripe_count, stripe_pattern,
807 static int verify_dir_param(const char *name,
808 const struct llapi_stripe_param *param)
810 char fsname[MAX_OBD_NAME + 1] = { 0 };
811 char *pool_name = param->lsp_pool;
814 /* Make sure we are on a Lustre file system */
815 rc = llapi_search_fsname(name, fsname);
817 llapi_error(LLAPI_MSG_ERROR, rc,
818 "'%s' is not on a Lustre filesystem",
823 /* Check if the stripe pattern is sane. */
824 rc = llapi_dir_stripe_limit_check(param->lsp_stripe_offset,
825 param->lsp_stripe_count,
826 param->lsp_stripe_pattern);
830 /* Make sure we have a good pool */
831 if (pool_name != NULL) {
832 /* in case user gives the full pool name <fsname>.<poolname>,
833 * strip the fsname */
834 char *ptr = strchr(pool_name, '.');
838 if (strcmp(pool_name, fsname) != 0) {
840 llapi_err_noerrno(LLAPI_MSG_ERROR,
841 "Pool '%s' is not on filesystem '%s'",
848 /* Make sure the pool exists and is non-empty */
849 rc = llapi_search_tgt(fsname, pool_name, NULL, true);
851 char *err = rc == 0 ? "has no OSTs" : "does not exist";
853 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
854 fsname, pool_name, err);
859 /* sanity check of target list */
860 if (param->lsp_is_specific) {
861 char mdtname[MAX_OBD_NAME + 1];
865 for (i = 0; i < param->lsp_stripe_count; i++) {
866 snprintf(mdtname, sizeof(mdtname), "%s-MDT%04x_UUID",
867 fsname, param->lsp_tgts[i]);
868 rc = llapi_search_tgt(fsname, pool_name, mdtname, true);
873 llapi_error(LLAPI_MSG_ERROR, rc,
874 "%s: cannot find MDT %s in %s",
881 /* Make sure stripe offset is in MDT list. */
882 if (param->lsp_tgts[i] == param->lsp_stripe_offset)
886 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
887 "%s: stripe offset '%d' is not in the "
889 __func__, param->lsp_stripe_offset);
897 static inline void param2lmu(struct lmv_user_md *lmu,
898 const struct llapi_stripe_param *param)
900 lmu->lum_magic = param->lsp_is_specific ? LMV_USER_MAGIC_SPECIFIC :
902 lmu->lum_stripe_count = param->lsp_stripe_count;
903 lmu->lum_stripe_offset = param->lsp_stripe_offset;
904 lmu->lum_hash_type = param->lsp_stripe_pattern;
905 if (param->lsp_pool != NULL)
906 strncpy(lmu->lum_pool_name, param->lsp_pool, LOV_MAXPOOLNAME);
907 if (param->lsp_is_specific) {
910 for (i = 0; i < param->lsp_stripe_count; i++)
911 lmu->lum_objects[i].lum_mds = param->lsp_tgts[i];
915 int llapi_dir_set_default_lmv(const char *name,
916 const struct llapi_stripe_param *param)
918 struct lmv_user_md lmu = { 0 };
922 rc = verify_dir_param(name, param);
926 /* TODO: default lmv doesn't support specific targets yet */
927 if (param->lsp_is_specific)
930 param2lmu(&lmu, param);
932 fd = open(name, O_DIRECTORY | O_RDONLY);
935 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
939 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lmu);
941 char *errmsg = "stripe already set";
943 if (errno != EEXIST && errno != EALREADY)
944 errmsg = strerror(errno);
946 llapi_err_noerrno(LLAPI_MSG_ERROR,
947 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
954 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
955 int stripe_count, int stripe_pattern,
956 const char *pool_name)
958 const struct llapi_stripe_param param = {
959 .lsp_stripe_count = stripe_count,
960 .lsp_stripe_offset = stripe_offset,
961 .lsp_stripe_pattern = stripe_pattern,
962 .lsp_pool = (char *)pool_name
965 return llapi_dir_set_default_lmv(name, ¶m);
969 * Create a Lustre directory.
971 * \param name the name of the directory to be created
972 * \param mode permission of the file if it is created, see mode in open(2)
973 * \param param stripe pattern of the newly created directory
975 * \retval 0 on success
976 * \retval negative errno on failure
978 int llapi_dir_create_param(const char *name, mode_t mode,
979 const struct llapi_stripe_param *param)
981 struct lmv_user_md *lmu = NULL;
982 size_t lmu_size = sizeof(*lmu);
983 struct obd_ioctl_data data = { 0 };
986 char *dirpath = NULL;
987 char *namepath = NULL;
992 rc = verify_dir_param(name, param);
996 if (param->lsp_is_specific)
997 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
998 LMV_USER_MAGIC_SPECIFIC);
1000 lmu = calloc(1, lmu_size);
1004 dirpath = strdup(name);
1010 namepath = strdup(name);
1017 param2lmu(lmu, param);
1019 filename = basename(namepath);
1020 dir = dirname(dirpath);
1022 data.ioc_inlbuf1 = (char *)filename;
1023 data.ioc_inllen1 = strlen(filename) + 1;
1024 data.ioc_inlbuf2 = (char *)lmu;
1025 data.ioc_inllen2 = lmu_size;
1026 data.ioc_type = mode;
1027 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
1029 llapi_error(LLAPI_MSG_ERROR, rc,
1030 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1035 fd = open(dir, O_DIRECTORY | O_RDONLY);
1038 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1042 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1043 char *errmsg = "stripe already set";
1045 if (errno != EEXIST && errno != EALREADY)
1046 errmsg = strerror(errno);
1048 llapi_err_noerrno(LLAPI_MSG_ERROR,
1049 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
1061 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1062 int stripe_count, int stripe_pattern,
1063 const char *pool_name)
1065 const struct llapi_stripe_param param = {
1066 .lsp_stripe_count = stripe_count,
1067 .lsp_stripe_offset = stripe_offset,
1068 .lsp_stripe_pattern = stripe_pattern,
1069 .lsp_pool = (char *)pool_name
1072 return llapi_dir_create_param(name, mode, ¶m);
1075 int llapi_direntry_remove(char *dname)
1077 char *dirpath = NULL;
1078 char *namepath = NULL;
1084 dirpath = strdup(dname);
1085 namepath = strdup(dname);
1086 if (!dirpath || !namepath)
1089 filename = basename(namepath);
1091 dir = dirname(dirpath);
1093 fd = open(dir, O_DIRECTORY | O_RDONLY);
1096 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1101 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1102 char *errmsg = strerror(errno);
1103 llapi_err_noerrno(LLAPI_MSG_ERROR,
1104 "error on ioctl %#jx for '%s' (%d): %s",
1105 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1117 * Find the fsname, the full path, and/or an open fd.
1118 * Either the fsname or path must not be NULL
1120 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1123 char buf[PATH_MAX], mntdir[PATH_MAX];
1124 char *ptr, *ptr_end;
1126 int idx = 0, len = 0, mntlen, fd;
1129 /* get the mount point */
1130 fp = setmntent(PROC_MOUNTS, "r");
1133 llapi_error(LLAPI_MSG_ERROR, rc,
1134 "setmntent(%s) failed", PROC_MOUNTS);
1138 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1141 if (!llapi_is_lustre_mnt(&mnt))
1144 if ((want & WANT_INDEX) && (idx++ != index))
1147 mntlen = strlen(mnt.mnt_dir);
1148 ptr = strchr(mnt.mnt_fsname, '/');
1149 while (ptr && *ptr == '/')
1151 /* thanks to the call to llapi_is_lustre_mnt() above,
1152 * we are sure that mnt.mnt_fsname contains ":/",
1153 * so ptr should never be NULL */
1157 while (*ptr_end != '/' && *ptr_end != '\0')
1160 /* Check the fsname for a match, if given */
1161 if (!(want & WANT_FSNAME) && fsname != NULL &&
1162 (strlen(fsname) > 0) &&
1163 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1166 /* If the path isn't set return the first one we find */
1167 if (path == NULL || strlen(path) == 0) {
1168 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1169 mntdir[strlen(mnt.mnt_dir)] = '\0';
1170 if ((want & WANT_FSNAME) && fsname != NULL) {
1171 strncpy(fsname, ptr, ptr_end - ptr);
1172 fsname[ptr_end - ptr] = '\0';
1176 /* Otherwise find the longest matching path */
1177 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1178 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1179 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1180 mntdir[strlen(mnt.mnt_dir)] = '\0';
1182 if ((want & WANT_FSNAME) && fsname != NULL) {
1183 strncpy(fsname, ptr, ptr_end - ptr);
1184 fsname[ptr_end - ptr] = '\0';
1193 if ((want & WANT_PATH) && path != NULL) {
1194 strncpy(path, mntdir, strlen(mntdir));
1195 path[strlen(mntdir)] = '\0';
1197 if (want & WANT_FD) {
1198 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1201 llapi_error(LLAPI_MSG_ERROR, rc,
1202 "error opening '%s'", mntdir);
1208 } else if (want & WANT_ERROR)
1209 llapi_err_noerrno(LLAPI_MSG_ERROR,
1210 "can't find fs root for '%s': %d",
1211 (want & WANT_PATH) ? fsname : path, rc);
1216 * search lustre mounts
1218 * Calling this function will return to the user the mount point, mntdir, and
1219 * the file system name, fsname, if the user passed a buffer to this routine.
1221 * The user inputs are pathname and index. If the pathname is supplied then
1222 * the value of the index will be ignored. The pathname will return data if
1223 * the pathname is located on a lustre mount. Index is used to pick which
1224 * mount point you want in the case of multiple mounted lustre file systems.
1225 * See function lfs_osts in lfs.c for an example of the index use.
1227 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1230 int want = WANT_PATH, idx = -1;
1232 if (!pathname || pathname[0] == '\0') {
1236 strcpy(mntdir, pathname);
1239 want |= WANT_FSNAME;
1240 return get_root_path(want, fsname, NULL, mntdir, idx);
1243 /* Given a path, find the corresponding Lustre fsname */
1244 int llapi_search_fsname(const char *pathname, char *fsname)
1249 path = realpath(pathname, NULL);
1251 char buf[PATH_MAX], *ptr;
1254 if (pathname[0] != '/') {
1255 /* Need an absolute path, but realpath() only works for
1256 * pathnames that actually exist. We go through the
1257 * extra hurdle of dirname(getcwd() + pathname) in
1258 * case the relative pathname contains ".." in it. */
1259 if (getcwd(buf, sizeof(buf) - 2) == NULL)
1261 rc = strlcat(buf, "/", sizeof(buf));
1262 if (rc >= sizeof(buf))
1265 rc = strlcat(buf, pathname, sizeof(buf));
1266 if (rc >= sizeof(buf))
1268 path = realpath(buf, NULL);
1270 ptr = strrchr(buf, '/');
1274 path = realpath(buf, NULL);
1277 llapi_error(LLAPI_MSG_ERROR, rc,
1278 "pathname '%s' cannot expand",
1284 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1289 int llapi_search_rootpath(char *pathname, const char *fsname)
1291 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1294 int llapi_getname(const char *path, char *buf, size_t size)
1296 struct obd_uuid uuid_buf;
1297 char *uuid = uuid_buf.uuid;
1300 memset(&uuid_buf, 0, sizeof(uuid_buf));
1301 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1305 /* We want to turn lustre-clilov-ffff88002738bc00 into
1306 * lustre-ffff88002738bc00. */
1308 nr = snprintf(buf, size, "%.*s-%s",
1309 (int) (strlen(uuid) - 24), uuid,
1310 uuid + strlen(uuid) - 16);
1319 * Get the list of pool members.
1320 * \param poolname string of format \<fsname\>.\<poolname\>
1321 * \param members caller-allocated array of char*
1322 * \param list_size size of the members array
1323 * \param buffer caller-allocated buffer for storing OST names
1324 * \param buffer_size size of the buffer
1326 * \return number of members retrieved for this pool
1327 * \retval -error failure
1329 int llapi_get_poolmembers(const char *poolname, char **members,
1330 int list_size, char *buffer, int buffer_size)
1332 char fsname[PATH_MAX];
1341 /* name is FSNAME.POOLNAME */
1342 if (strlen(poolname) >= sizeof(fsname))
1344 strlcpy(fsname, poolname, sizeof(fsname));
1345 pool = strchr(fsname, '.');
1352 rc = poolpath(&pathname, fsname, NULL);
1354 llapi_error(LLAPI_MSG_ERROR, rc,
1355 "Lustre filesystem '%s' not found",
1360 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1361 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1362 cfs_free_param_data(&pathname);
1363 if (rc >= sizeof(buf))
1365 fd = fopen(buf, "r");
1368 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1373 while (fgets(buf, sizeof(buf), fd) != NULL) {
1374 if (nb_entries >= list_size) {
1378 buf[sizeof(buf) - 1] = '\0';
1380 tmp = strchr(buf, '\n');
1383 if (used + strlen(buf) + 1 > buffer_size) {
1388 strcpy(buffer + used, buf);
1389 members[nb_entries] = buffer + used;
1390 used += strlen(buf) + 1;
1400 * Get the list of pools in a filesystem.
1401 * \param name filesystem name or path
1402 * \param poollist caller-allocated array of char*
1403 * \param list_size size of the poollist array
1404 * \param buffer caller-allocated buffer for storing pool names
1405 * \param buffer_size size of the buffer
1407 * \return number of pools retrieved for this filesystem
1408 * \retval -error failure
1410 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1411 char *buffer, int buffer_size)
1413 char rname[PATH_MAX];
1418 struct dirent *pool;
1420 unsigned int nb_entries = 0;
1421 unsigned int used = 0;
1424 /* initialize output array */
1425 for (i = 0; i < list_size; i++)
1428 /* is name a pathname ? */
1429 ptr = strchr(name, '/');
1431 /* only absolute pathname is supported */
1435 if (!realpath(name, rname)) {
1437 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1442 fsname = strdup(rname);
1446 rc = poolpath(&pathname, NULL, rname);
1448 /* name is FSNAME */
1449 fsname = strdup(name);
1452 rc = poolpath(&pathname, fsname, NULL);
1455 llapi_error(LLAPI_MSG_ERROR, rc,
1456 "Lustre filesystem '%s' not found", name);
1460 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1461 dir = opendir(pathname.gl_pathv[0]);
1464 llapi_error(LLAPI_MSG_ERROR, rc,
1465 "Could not open pool list for '%s'",
1472 pool = readdir(dir);
1478 /* ignore . and .. */
1479 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1482 /* check output bounds */
1483 if (nb_entries >= list_size) {
1488 /* +2 for '.' and final '\0' */
1489 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1495 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1496 poollist[nb_entries] = buffer + used;
1497 used += strlen(pool->d_name) + strlen(fsname) + 2;
1503 llapi_error(LLAPI_MSG_ERROR, rc,
1504 "Error reading pool list for '%s'", name);
1507 cfs_free_param_data(&pathname);
1510 return rc != 0 ? rc : nb_entries;
1513 /* wrapper for lfs.c and obd.c */
1514 int llapi_poollist(const char *name)
1516 /* list of pool names (assume that pool count is smaller
1518 char **list, *buffer = NULL, *fsname = (char *)name;
1519 char *poolname = NULL, *tmp = NULL, data[16];
1520 enum param_filter type = FILTER_BY_PATH;
1521 int obdcount, bufsize, rc, nb, i;
1526 if (name[0] != '/') {
1527 fsname = strdup(name);
1531 poolname = strchr(fsname, '.');
1534 type = FILTER_BY_FS_NAME;
1537 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1538 data, sizeof(data));
1541 obdcount = atoi(data);
1543 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1544 * and also an array to store the pointers for all that
1545 * allocated space. */
1547 bufsize = sizeof(struct obd_uuid) * obdcount;
1548 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1549 if (buffer == NULL) {
1553 list = (char **) (buffer + bufsize);
1556 /* name is a path or fsname */
1557 nb = llapi_get_poollist(name, list, obdcount,
1560 /* name is a pool name (<fsname>.<poolname>) */
1561 nb = llapi_get_poolmembers(name, list, obdcount,
1565 if (nb == -EOVERFLOW) {
1568 goto retry_get_pools;
1571 for (i = 0; i < nb; i++)
1572 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1573 rc = (nb < 0 ? nb : 0);
1577 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1582 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1583 void *data, struct dirent64 *de);
1585 #define OBD_NOT_FOUND (-1)
1587 static int common_param_init(struct find_param *param, char *path)
1589 int lum_size = get_mds_md_size(path);
1591 if (lum_size < PATH_MAX + 1)
1592 lum_size = PATH_MAX + 1;
1594 param->fp_lum_size = lum_size;
1595 param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
1596 if (param->fp_lmd == NULL) {
1597 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1598 "error: allocation of %zu bytes for ioctl",
1599 sizeof(lstat_t) + param->fp_lum_size);
1603 param->fp_lmv_stripe_count = 256;
1604 param->fp_lmv_md = calloc(1,
1605 lmv_user_md_size(param->fp_lmv_stripe_count,
1607 if (param->fp_lmv_md == NULL) {
1608 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1609 "error: allocation of %d bytes for ioctl",
1610 lmv_user_md_size(param->fp_lmv_stripe_count,
1615 param->fp_got_uuids = 0;
1616 param->fp_obd_indexes = NULL;
1617 param->fp_obd_index = OBD_NOT_FOUND;
1618 if (!param->fp_migrate)
1619 param->fp_mdt_index = OBD_NOT_FOUND;
1623 static void find_param_fini(struct find_param *param)
1625 if (param->fp_obd_indexes)
1626 free(param->fp_obd_indexes);
1629 free(param->fp_lmd);
1631 if (param->fp_lmv_md)
1632 free(param->fp_lmv_md);
1635 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1636 struct dirent64 *de)
1638 struct find_param *param = data;
1644 /* set errno upon failure */
1645 static DIR *opendir_parent(const char *path)
1651 path_copy = strdup(path);
1652 if (path_copy == NULL)
1655 parent_path = dirname(path_copy);
1656 parent = opendir(parent_path);
1662 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1667 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1668 if (param->fp_get_default_lmv)
1669 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1671 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1673 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1674 if (errno == E2BIG && ret != 0) {
1678 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1679 if (stripe_count <= param->fp_lmv_stripe_count)
1682 free(param->fp_lmv_md);
1683 param->fp_lmv_stripe_count = stripe_count;
1684 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1685 param->fp_lmv_md = malloc(lmv_size);
1686 if (param->fp_lmv_md == NULL) {
1687 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1688 "error: allocation of %d bytes for ioctl",
1689 lmv_user_md_size(param->fp_lmv_stripe_count,
1698 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1699 struct lov_user_mds_data *lmd, int lumlen)
1701 lstat_t *st = &lmd->lmd_st;
1704 if (parent == NULL && dir == NULL)
1708 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1709 } else if (parent) {
1710 char *fname = strrchr(path, '/');
1712 /* To avoid opening, locking, and closing each file on the
1713 * client if that is not needed. The GETFILEINFO ioctl can
1714 * be done on the patent dir with a single open for all
1715 * files in that directory, and it also doesn't pollute the
1716 * client dcache with millions of dentries when traversing
1717 * a large filesystem. */
1718 fname = (fname == NULL ? path : fname + 1);
1719 /* retrieve needed file info */
1720 strlcpy((char *)lmd, fname, lumlen);
1721 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1725 if (errno == ENOTTY) {
1726 /* ioctl is not supported, it is not a lustre fs.
1727 * Do the regular lstat(2) instead. */
1728 ret = lstat_f(path, st);
1731 llapi_error(LLAPI_MSG_ERROR, ret,
1732 "error: %s: lstat failed for %s",
1735 } else if (errno == ENOENT) {
1737 llapi_error(LLAPI_MSG_WARN, ret,
1738 "warning: %s: %s does not exist",
1740 } else if (errno != EISDIR) {
1742 llapi_error(LLAPI_MSG_ERROR, ret,
1743 "%s ioctl failed for %s.",
1744 dir ? "LL_IOC_MDC_GETINFO" :
1745 "IOC_MDC_GETFILEINFO", path);
1748 llapi_error(LLAPI_MSG_ERROR, ret,
1749 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1756 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1757 semantic_func_t sem_init,
1758 semantic_func_t sem_fini, void *data,
1759 struct dirent64 *de)
1761 struct find_param *param = (struct find_param *)data;
1762 struct dirent64 *dent;
1770 if (!d && errno != ENOTDIR) {
1772 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1775 } else if (!d && !parent) {
1776 /* ENOTDIR. Open the parent dir. */
1777 p = opendir_parent(path);
1784 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1790 while ((dent = readdir64(d)) != NULL) {
1793 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1796 /* Don't traverse .lustre directory */
1797 if (!(strcmp(dent->d_name, dot_lustre_name)))
1801 if ((len + dent->d_reclen + 2) > size) {
1802 llapi_err_noerrno(LLAPI_MSG_ERROR,
1803 "error: %s: string buffer is too small",
1808 strcat(path, dent->d_name);
1810 if (dent->d_type == DT_UNKNOWN) {
1811 lstat_t *st = ¶m->fp_lmd->lmd_st;
1813 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1814 param->fp_lum_size);
1816 dent->d_type = IFTODT(st->st_mode);
1823 switch (dent->d_type) {
1825 llapi_err_noerrno(LLAPI_MSG_ERROR,
1826 "error: %s: '%s' is UNKNOWN type %d",
1827 __func__, dent->d_name, dent->d_type);
1830 rc = llapi_semantic_traverse(path, size, d, sem_init,
1831 sem_fini, data, dent);
1832 if (rc != 0 && ret == 0)
1838 rc = sem_init(path, d, NULL, data, dent);
1839 if (rc < 0 && ret == 0)
1842 if (sem_fini && rc == 0)
1843 sem_fini(path, d, NULL, data, dent);
1851 sem_fini(path, parent, &d, data, de);
1860 static int param_callback(char *path, semantic_func_t sem_init,
1861 semantic_func_t sem_fini, struct find_param *param)
1863 int ret, len = strlen(path);
1866 if (len > PATH_MAX) {
1868 llapi_error(LLAPI_MSG_ERROR, ret,
1869 "Path name '%s' is too long", path);
1873 buf = (char *)malloc(PATH_MAX + 1);
1877 strlcpy(buf, path, PATH_MAX + 1);
1878 ret = common_param_init(param, buf);
1882 param->fp_depth = 0;
1884 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1885 sem_fini, param, NULL);
1887 find_param_fini(param);
1889 return ret < 0 ? ret : 0;
1892 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1894 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1897 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1902 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1904 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1907 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1912 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1916 fd = open(path, O_RDONLY | O_NONBLOCK);
1919 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1923 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1929 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1933 fd = open(path, O_RDONLY | O_NONBLOCK);
1936 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1940 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1952 * If uuidp is NULL, return the number of available obd uuids.
1953 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1954 * there are more OSTs than allocated to uuidp, then an error is returned with
1955 * the ost_count set to number of available obd uuids.
1957 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1958 int *ost_count, enum tgt_type type)
1960 char buf[PATH_MAX], format[32];
1961 int rc = 0, index = 0;
1962 struct obd_uuid name;
1966 /* Get the lov name */
1967 if (type == LOV_TYPE)
1968 rc = llapi_file_fget_lov_uuid(fd, &name);
1970 rc = llapi_file_fget_lmv_uuid(fd, &name);
1974 /* Now get the ost uuids */
1975 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
1976 FILTER_BY_EXACT, "target_obd", ¶m);
1980 fp = fopen(param.gl_pathv[0], "r");
1983 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
1988 snprintf(format, sizeof(format),
1989 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
1990 while (fgets(buf, sizeof(buf), fp) != NULL) {
1991 if (uuidp && (index < *ost_count)) {
1992 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2000 if (uuidp && (index > *ost_count))
2005 cfs_free_param_data(¶m);
2009 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2011 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2014 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2019 root = open(mnt, O_RDONLY | O_DIRECTORY);
2022 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2027 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2035 /* Check if user specified value matches a real uuid. Ignore _UUID,
2036 * -osc-4ba41334, other trailing gunk in comparison.
2037 * @param real_uuid ends in "_UUID"
2038 * @param search_uuid may or may not end in "_UUID"
2040 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2042 int cmplen = strlen(real_uuid);
2043 int searchlen = strlen(search_uuid);
2045 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2047 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2050 /* The UUIDs may legitimately be different lengths, if
2051 * the system was upgraded from an older version. */
2052 if (cmplen != searchlen)
2055 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2058 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2059 * returned in param->fp_obd_index */
2060 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2062 struct obd_uuid obd_uuid;
2069 if (param->fp_got_uuids)
2072 /* Get the lov/lmv name */
2073 if (param->fp_get_lmv)
2074 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2076 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2078 if (rc != -ENOTTY) {
2079 llapi_error(LLAPI_MSG_ERROR, rc,
2080 "error: can't get %s name: %s",
2081 param->fp_get_lmv ? "lmv" : "lov",
2089 param->fp_got_uuids = 1;
2091 /* Now get the ost uuids */
2092 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2093 obd_uuid.uuid, FILTER_BY_EXACT,
2094 "target_obd", ¶m_data);
2098 fp = fopen(param_data.gl_pathv[0], "r");
2101 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2102 param_data.gl_pathv[0]);
2106 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2107 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2108 param->fp_get_lmv ? "MDTS" : "OBDS");
2110 snprintf(format, sizeof(format),
2111 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2112 while (fgets(buf, sizeof(buf), fp) != NULL) {
2115 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2118 if (param->fp_obd_uuid) {
2119 if (llapi_uuid_match(obd_uuid.uuid,
2120 param->fp_obd_uuid->uuid)) {
2121 param->fp_obd_index = index;
2124 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2125 /* Print everything */
2126 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2129 param->fp_obds_printed = 1;
2133 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2134 llapi_err_noerrno(LLAPI_MSG_ERROR,
2135 "error: %s: unknown obduuid: %s",
2136 __func__, param->fp_obd_uuid->uuid);
2140 cfs_free_param_data(¶m_data);
2144 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2145 * obd index for all these obduuids will be returned in
2146 * param->fp_obd_indexes */
2147 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2148 int num_obds, int **obdindexes, int *obdindex,
2151 int ret, obdcount, obd_valid = 0, obdnum;
2153 struct obd_uuid *uuids = NULL;
2157 if (type == LOV_TYPE)
2158 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2160 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2164 obdcount = atoi(buf);
2165 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2170 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2172 if (ret == -EOVERFLOW) {
2173 struct obd_uuid *uuids_temp;
2175 uuids_temp = realloc(uuids, obdcount *
2176 sizeof(struct obd_uuid));
2177 if (uuids_temp != NULL) {
2179 goto retry_get_uuids;
2184 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2188 indexes = malloc(num_obds * sizeof(*obdindex));
2189 if (indexes == NULL) {
2194 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2197 /* The user may have specified a simple index */
2198 i = strtol(obduuids[obdnum].uuid, &end, 0);
2199 if (end && *end == '\0' && i < obdcount) {
2200 indexes[obdnum] = i;
2203 for (i = 0; i < obdcount; i++) {
2204 if (llapi_uuid_match(uuids[i].uuid,
2205 obduuids[obdnum].uuid)) {
2206 indexes[obdnum] = i;
2212 if (i >= obdcount) {
2213 indexes[obdnum] = OBD_NOT_FOUND;
2214 llapi_err_noerrno(LLAPI_MSG_ERROR,
2215 "error: %s: unknown obduuid: %s",
2216 __func__, obduuids[obdnum].uuid);
2222 *obdindex = OBD_NOT_FOUND;
2224 *obdindex = obd_valid;
2226 *obdindexes = indexes;
2234 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2238 if (param->fp_mdt_uuid) {
2239 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2241 ¶m->fp_mdt_indexes,
2242 ¶m->fp_mdt_index, LMV_TYPE);
2247 if (param->fp_obd_uuid) {
2248 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2250 ¶m->fp_obd_indexes,
2251 ¶m->fp_obd_index, LOV_TYPE);
2256 param->fp_got_uuids = 1;
2261 int llapi_ostlist(char *path, struct find_param *param)
2266 fd = open(path, O_RDONLY | O_DIRECTORY);
2270 ret = setup_obd_uuid(fd, path, param);
2277 * Tries to determine the default stripe attributes for a given filesystem. The
2278 * filesystem to check should be specified by fsname, or will be determined
2281 static int sattr_get_defaults(const char *const fsname,
2282 unsigned int *scount,
2283 unsigned int *ssize,
2284 unsigned int *soffset)
2290 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2291 "stripecount", val, sizeof(val));
2294 *scount = atoi(val);
2298 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2299 "stripesize", val, sizeof(val));
2306 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2307 "stripeoffset", val, sizeof(val));
2310 *soffset = atoi(val);
2317 * Tries to gather the default stripe attributes for a given filesystem. If
2318 * the attributes can be determined, they are cached for easy retreival the
2319 * next time they are needed. Only a single filesystem's attributes are
2322 int sattr_cache_get_defaults(const char *const fsname,
2323 const char *const pathname, unsigned int *scount,
2324 unsigned int *ssize, unsigned int *soffset)
2327 char fsname[PATH_MAX + 1];
2328 unsigned int stripecount;
2329 unsigned int stripesize;
2330 unsigned int stripeoffset;
2336 char fsname_buf[PATH_MAX + 1];
2337 unsigned int tmp[3];
2339 if (fsname == NULL) {
2340 rc = llapi_search_fsname(pathname, fsname_buf);
2344 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2347 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2349 * Ensure all 3 sattrs (count, size, and offset) are
2350 * successfully retrieved and stored in tmp before writing to
2353 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2357 cache.stripecount = tmp[0];
2358 cache.stripesize = tmp[1];
2359 cache.stripeoffset = tmp[2];
2360 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2364 *scount = cache.stripecount;
2366 *ssize = cache.stripesize;
2368 *soffset = cache.stripeoffset;
2373 static char *layout2name(__u32 layout_pattern)
2375 if (layout_pattern == LOV_PATTERN_MDT)
2377 else if (layout_pattern == LOV_PATTERN_RAID0)
2379 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2385 enum lov_dump_flags {
2386 LDF_IS_DIR = 0x0001,
2387 LDF_IS_RAW = 0x0002,
2388 LDF_INDENT = 0x0004,
2389 LDF_SKIP_OBJS = 0x0008,
2393 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2394 struct lov_user_ost_data_v1 *objects,
2395 int verbose, int depth, char *pool_name,
2396 enum lov_dump_flags flags)
2398 bool is_dir = flags & LDF_IS_DIR;
2399 bool is_raw = flags & LDF_IS_RAW;
2400 bool indent = flags & LDF_INDENT;
2401 bool yaml = flags & LDF_YAML;
2402 bool skip_objs = flags & LDF_SKIP_OBJS;
2403 char *prefix = is_dir ? "" : "lmm_";
2404 char *separator = "";
2405 char *space = indent ? " " : "";
2408 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2409 lmm_oi_set_seq(&lum->lmm_oi, 0);
2410 if (!indent && (verbose & VERBOSE_DETAIL))
2411 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2414 if (!yaml && !indent && depth && path &&
2415 ((verbose != VERBOSE_OBJID) || !is_dir))
2416 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2418 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2419 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2420 space, prefix, lum->lmm_magic);
2421 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2423 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2424 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2426 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2428 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2433 if (verbose & ~VERBOSE_DFID)
2434 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2436 /* This needs a bit of hand-holding since old 1.x lmm_oi
2437 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2438 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2439 * a real FID. Ideally the 2.x code would have stored this
2440 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2441 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2442 * worked properly (especially since IGIF FIDs use mds_inum as
2443 * the FID SEQ), but unfortunately that didn't happen.
2445 * Print it to look like an IGIF FID, even though the fields
2446 * are reversed on disk, so that it makes sense to userspace.
2448 * Don't use ostid_id() and ostid_seq(), since they assume the
2449 * oi_fid fields are in the right order. This is why there are
2450 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2452 * For newer layout types hopefully this will be a real FID. */
2453 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2454 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2455 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2456 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2457 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2459 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2462 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2466 if (verbose & VERBOSE_COUNT) {
2467 if (verbose & ~VERBOSE_COUNT)
2468 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2471 if (!is_raw && lum->lmm_stripe_count == 0 &&
2472 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2473 unsigned int scount;
2474 rc = sattr_cache_get_defaults(NULL, path,
2478 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2481 llapi_error(LLAPI_MSG_ERROR, rc,
2482 "Cannot determine default"
2485 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2486 lum->lmm_stripe_count ==
2487 (typeof(lum->lmm_stripe_count))(-1)
2488 ? -1 : lum->lmm_stripe_count);
2491 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2492 (__s16)lum->lmm_stripe_count);
2494 if (!yaml && is_dir)
2500 if (verbose & VERBOSE_SIZE) {
2501 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2502 if (verbose & ~VERBOSE_SIZE)
2503 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2505 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2507 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2510 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2512 llapi_error(LLAPI_MSG_ERROR, rc,
2513 "Cannot determine default"
2516 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2517 lum->lmm_stripe_size);
2519 if (!yaml && is_dir)
2525 if ((verbose & VERBOSE_LAYOUT)) {
2526 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2527 if (verbose & ~VERBOSE_LAYOUT)
2528 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2530 if (lov_pattern_supported(lum->lmm_pattern))
2531 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2532 layout2name(lum->lmm_pattern));
2534 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2535 separator = is_dir ? " " : "\n";
2538 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2539 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2540 if (verbose & ~VERBOSE_GENERATION)
2541 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2543 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2544 (int)lum->lmm_layout_gen);
2548 if (verbose & VERBOSE_OFFSET) {
2549 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2550 if (verbose & ~VERBOSE_OFFSET)
2551 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2553 if (is_dir || skip_objs)
2554 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2555 lum->lmm_stripe_offset ==
2556 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2557 lum->lmm_stripe_offset);
2559 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2560 objects[0].l_ost_idx);
2561 if (!yaml && is_dir)
2567 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2568 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2569 if (verbose & ~VERBOSE_POOL)
2570 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2572 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2573 if (!yaml && is_dir)
2579 if (strlen(separator) != 0)
2580 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2583 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2584 struct lov_user_ost_data_v1 *objects,
2585 char *path, int obdindex, int depth,
2586 int header, enum lov_dump_flags flags)
2588 bool is_dir = flags & LDF_IS_DIR;
2589 bool indent = flags & LDF_INDENT;
2590 bool skip_objs = flags & LDF_SKIP_OBJS;
2591 bool yaml = flags & LDF_YAML;
2592 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2595 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2596 if (obdindex == objects[i].l_ost_idx) {
2606 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2609 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2610 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2611 char *space = " - ";
2614 llapi_printf(LLAPI_MSG_NORMAL,
2615 "%6slmm_objects:\n", " ");
2617 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2619 llapi_printf(LLAPI_MSG_NORMAL,
2620 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2622 for (i = 0; i < lum->lmm_stripe_count; i++) {
2623 int idx = objects[i].l_ost_idx;
2624 long long oid = ostid_id(&objects[i].l_ost_oi);
2625 long long gr = ostid_seq(&objects[i].l_ost_oi);
2627 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2631 struct lu_fid fid = { 0 };
2633 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2634 llapi_printf(LLAPI_MSG_NORMAL,
2635 "%sl_ost_idx: %d\n", space, idx);
2636 llapi_printf(LLAPI_MSG_NORMAL,
2637 "%8sl_fid: "DFID_NOBRACE"\n",
2639 } else if (indent) {
2640 struct lu_fid fid = { 0 };
2642 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2643 llapi_printf(LLAPI_MSG_NORMAL,
2644 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2645 space, i, idx, PFID(&fid));
2648 sprintf(fmt, "%s%s%s\n",
2649 "\t%6u\t%14llu\t%#13llx\t",
2650 (fid_seq_is_rsvd(gr) ||
2651 fid_seq_is_mdt0(gr)) ?
2652 "%14llu" : "%#14llx", "%s");
2653 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2655 obdindex == idx ? " *" : "");
2659 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2662 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2663 char *path, int obdindex, int depth, int verbose,
2664 enum lov_dump_flags flags)
2666 struct lmv_user_mds_data *objects = lum->lum_objects;
2667 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2668 int i, obdstripe = 0;
2669 char *separator = "";
2670 bool yaml = flags & LDF_YAML;
2672 if (obdindex != OBD_NOT_FOUND) {
2673 if (lum->lum_stripe_count == 0) {
2674 if (obdindex == lum->lum_stripe_offset)
2677 for (i = 0; i < lum->lum_stripe_count; i++) {
2678 if (obdindex == objects[i].lum_mds) {
2679 llapi_printf(LLAPI_MSG_NORMAL,
2694 /* show all information default */
2696 if (lum->lum_magic == LMV_USER_MAGIC)
2697 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2698 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2700 verbose = VERBOSE_OBJID;
2703 if (depth && path && ((verbose != VERBOSE_OBJID)))
2704 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2706 if (verbose & VERBOSE_COUNT) {
2707 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2708 if (verbose & ~VERBOSE_COUNT)
2709 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2710 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2711 (int)lum->lum_stripe_count);
2712 if ((verbose & VERBOSE_OFFSET) && !yaml)
2718 if (verbose & VERBOSE_OFFSET) {
2719 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2720 if (verbose & ~VERBOSE_OFFSET)
2721 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2722 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2723 (int)lum->lum_stripe_offset);
2724 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2730 if (verbose & VERBOSE_HASH_TYPE) {
2731 unsigned int type = lum->lum_hash_type;
2733 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2734 if (verbose & ~VERBOSE_HASH_TYPE)
2735 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2736 if (type < LMV_HASH_TYPE_MAX)
2737 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2738 mdt_hash_name[type]);
2740 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2745 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2746 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2747 if (obdstripe == 1 && lum->lum_stripe_count > 0)
2748 llapi_printf(LLAPI_MSG_NORMAL,
2749 "mdtidx\t\t FID[seq:oid:ver]\n");
2750 for (i = 0; i < lum->lum_stripe_count; i++) {
2751 int idx = objects[i].lum_mds;
2752 struct lu_fid *fid = &objects[i].lum_fid;
2753 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2754 llapi_printf(LLAPI_MSG_NORMAL,
2755 "%6u\t\t "DFID"\t\t%s\n",
2757 obdindex == idx ? " *" : "");
2762 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2763 pool_name[0] != '\0') {
2764 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2765 if (verbose & ~VERBOSE_POOL)
2766 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2768 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2772 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2773 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2776 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2777 enum lov_dump_flags flags)
2779 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2780 int depth = param->fp_max_depth;
2781 int verbose = param->fp_verbose;
2782 bool yaml = flags & LDF_YAML;
2784 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2785 !(flags & LDF_IS_DIR)) && !yaml)
2786 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2788 if (verbose & VERBOSE_DETAIL) {
2789 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2790 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2791 " ", comp_v1->lcm_magic);
2792 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2793 " ", comp_v1->lcm_size);
2794 if (flags & LDF_IS_DIR)
2795 llapi_printf(LLAPI_MSG_NORMAL,
2796 "%2slcm_flags: %s\n", " ",
2797 comp_v1->lcm_mirror_count > 0 ?
2800 llapi_printf(LLAPI_MSG_NORMAL,
2801 "%2slcm_flags: %s\n",
2802 " ", lcm_flags_string(comp_v1->lcm_flags));
2805 if (verbose & VERBOSE_GENERATION) {
2806 if (verbose & ~VERBOSE_GENERATION)
2807 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2809 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2812 if (verbose & VERBOSE_MIRROR_COUNT) {
2813 if (verbose & ~VERBOSE_MIRROR_COUNT)
2814 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2816 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2817 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2818 comp_v1->lcm_mirror_count + 1 : 1);
2821 if (verbose & VERBOSE_COMP_COUNT) {
2822 if (verbose & ~VERBOSE_COMP_COUNT)
2823 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2825 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2826 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2827 comp_v1->lcm_entry_count : 0);
2830 if (verbose & VERBOSE_DETAIL && !yaml)
2831 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2834 static void lcme_flags2str(__u32 comp_flags)
2840 llapi_printf(LLAPI_MSG_NORMAL, "0");
2843 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2844 if (comp_flags & comp_flags_table[i].cfn_flag) {
2846 llapi_printf(LLAPI_MSG_NORMAL, ",");
2847 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2848 comp_flags_table[i].cfn_name);
2849 comp_flags &= ~comp_flags_table[i].cfn_flag;
2855 llapi_printf(LLAPI_MSG_NORMAL, ",");
2856 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2860 static void lov_dump_comp_v1_entry(struct find_param *param,
2861 enum lov_dump_flags flags, int index)
2863 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2864 struct lov_comp_md_entry_v1 *entry;
2865 char *separator = "";
2866 int verbose = param->fp_verbose;
2867 bool yaml = flags & LDF_YAML;
2869 entry = &comp_v1->lcm_entries[index];
2872 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2874 if (verbose & VERBOSE_COMP_ID) {
2875 if (verbose & VERBOSE_DETAIL && !yaml)
2876 llapi_printf(LLAPI_MSG_NORMAL,
2877 "%slcme_id: ", " - ");
2878 else if (verbose & ~VERBOSE_COMP_ID)
2879 llapi_printf(LLAPI_MSG_NORMAL,
2880 "%4slcme_id: ", " ");
2881 if (entry->lcme_id != LCME_ID_INVAL)
2882 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2884 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2888 if (verbose & VERBOSE_COMP_FLAGS) {
2889 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2890 if (verbose & ~VERBOSE_COMP_FLAGS)
2891 llapi_printf(LLAPI_MSG_NORMAL,
2892 "%4slcme_flags: ", " ");
2893 lcme_flags2str(entry->lcme_flags);
2897 if (verbose & VERBOSE_COMP_START) {
2898 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2899 if (verbose & ~VERBOSE_COMP_START)
2900 llapi_printf(LLAPI_MSG_NORMAL,
2901 "%4slcme_extent.e_start: ", " ");
2902 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2903 entry->lcme_extent.e_start);
2907 if (verbose & VERBOSE_COMP_END) {
2908 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2909 if (verbose & ~VERBOSE_COMP_END)
2910 llapi_printf(LLAPI_MSG_NORMAL,
2911 "%4slcme_extent.e_end: ", " ");
2912 if (entry->lcme_extent.e_end == LUSTRE_EOF)
2913 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
2915 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2916 entry->lcme_extent.e_end);
2921 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2922 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2923 } else if (verbose & VERBOSE_DETAIL) {
2924 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2925 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
2926 " ", entry->lcme_offset);
2927 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
2928 " ", entry->lcme_size);
2929 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2931 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2935 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2936 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2938 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2939 * The table below gives the answers for the specified parameters (value and
2940 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2941 * --------------------------------------
2942 * 1 | file > limit; sign > 0 | -1 / -1 |
2943 * 2 | file = limit; sign > 0 | -1 / -1 |
2944 * 3 | file < limit; sign > 0 | ? / 1 |
2945 * 4 | file > limit; sign = 0 | -1 / -1 |
2946 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2947 * 6 | file < limit; sign = 0 | ? / -1 |
2948 * 7 | file > limit; sign < 0 | 1 / 1 |
2949 * 8 | file = limit; sign < 0 | ? / -1 |
2950 * 9 | file < limit; sign < 0 | ? / -1 |
2951 * --------------------------------------
2952 * Note: 5th actually means that the value is within the interval
2953 * (limit - margin, limit]. */
2954 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2955 int sign, int negopt, unsigned long long margin,
2961 /* Drop the fraction of margin (of days). */
2962 if (file + margin <= limit)
2964 } else if (sign == 0) {
2965 if (file <= limit && file + margin > limit)
2967 else if (file + margin <= limit)
2969 } else if (sign < 0) {
2976 return negopt ? ~ret + 1 : ret;
2979 static inline struct lov_user_md *
2980 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
2982 return (struct lov_user_md *)((char *)comp_v1 +
2983 comp_v1->lcm_entries[ent_idx].lcme_offset);
2986 static inline struct lov_user_ost_data_v1 *
2987 lov_v1v3_objects(struct lov_user_md *v1)
2989 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
2990 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
2992 return v1->lmm_objects;
2996 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
2998 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
2999 strlcpy(pool_name, ((struct lov_user_md_v3 *)v1)->lmm_pool_name,
3002 pool_name[0] = '\0';
3006 print_last_init_comp(struct find_param *param)
3008 /* print all component info */
3009 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3012 /* print specific component info */
3013 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3014 param->fp_check_comp_start || param->fp_check_comp_end)
3020 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3024 if (param->fp_comp_end == LUSTRE_EOF) {
3025 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3026 match = end == LUSTRE_EOF ? 1 : -1;
3027 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3028 match = end == LUSTRE_EOF ? -1 : 1;
3029 else /* at least EOF */
3031 if (param->fp_exclude_comp_end)
3034 unsigned long long margin;
3036 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3037 match = find_value_cmp(end, param->fp_comp_end,
3038 param->fp_comp_end_sign,
3039 param->fp_exclude_comp_end, margin, 0);
3046 * An example of "getstripe -v" for a two components PFL file:
3049 * lcm_magic: 0x0BD60BD0
3053 * lcm_entry_count: 2
3057 * lcme_extent.e_start: 0
3058 * lcme_extent.e_end: 1048576
3062 * lmm_magic: 0x0BD10BD0
3063 * lmm_seq: 0x200000401
3064 * lmm_object_id: 0x1
3065 * lmm_fid: [0x200000401:0x1:0x0]
3066 * lmm_stripe_count: 1
3067 * lmm_stripe_size: 1048576
3068 * lmm_pattern: raid0
3070 * lmm_stripe_offset: 0
3072 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3076 * lcme_extent.e_start: 1048576
3077 * lcme_extent.e_end: EOF
3081 * lmm_magic: 0x0BD10BD0
3082 * lmm_seq: 0x200000401
3083 * lmm_object_id: 0x1
3084 * lmm_fid: [0x200000401:0x1:0x0]
3085 * lmm_stripe_count: 2
3086 * lmm_stripe_size: 1048576
3087 * lmm_pattern: raid0
3089 * lmm_stripe_offset: 1
3091 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3092 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3094 static void lov_dump_comp_v1(struct find_param *param, char *path,
3095 enum lov_dump_flags flags)
3097 struct lov_comp_md_entry_v1 *entry;
3098 struct lov_user_ost_data_v1 *objects;
3099 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3100 struct lov_user_md_v1 *v1;
3101 char pool_name[LOV_MAXPOOLNAME + 1];
3102 int obdindex = param->fp_obd_index;
3103 int i, j, match, obdstripe = 0;
3105 if (obdindex != OBD_NOT_FOUND) {
3106 for (i = 0; !(flags & LDF_IS_DIR) &&
3107 i < comp_v1->lcm_entry_count; i++) {
3108 if (!(comp_v1->lcm_entries[i].lcme_flags &
3112 v1 = lov_comp_entry(comp_v1, i);
3113 objects = lov_v1v3_objects(v1);
3115 for (j = 0; j < v1->lmm_stripe_count; j++) {
3116 if (obdindex == objects[j].l_ost_idx) {
3129 lov_dump_comp_v1_header(param, path, flags);
3131 flags |= LDF_INDENT;
3133 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3134 entry = &comp_v1->lcm_entries[i];
3136 if (param->fp_check_comp_flags) {
3137 if ((param->fp_exclude_comp_flags &&
3138 (param->fp_comp_flags & entry->lcme_flags)) ||
3139 (!param->fp_exclude_comp_flags &&
3140 !(param->fp_comp_flags & entry->lcme_flags)))
3144 if (param->fp_check_comp_id &&
3145 param->fp_comp_id != entry->lcme_id)
3148 if (param->fp_check_comp_start) {
3149 match = find_value_cmp(entry->lcme_extent.e_start,
3150 param->fp_comp_start,
3151 param->fp_comp_start_sign,
3153 param->fp_comp_start_units, 0);
3158 if (param->fp_check_comp_end) {
3159 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3165 if (print_last_init_comp(param)) {
3167 * if part of stripe info is needed, we'd print only
3168 * the last instantiated component info.
3170 if (entry->lcme_flags & LCME_FL_INIT)
3176 if (entry->lcme_flags & LCME_FL_INIT)
3177 flags &= ~LDF_SKIP_OBJS;
3179 flags |= LDF_SKIP_OBJS;
3181 lov_dump_comp_v1_entry(param, flags, i);
3183 v1 = lov_comp_entry(comp_v1, i);
3184 objects = lov_v1v3_objects(v1);
3185 lov_v1v3_pool_name(v1, pool_name);
3187 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3188 param->fp_max_depth, param->fp_verbose,
3191 if (print_last_init_comp(param)) {
3193 * directory layout contains only layout template, print the
3197 i = comp_v1->lcm_entry_count - 1;
3200 flags &= ~LDF_SKIP_OBJS;
3202 lov_dump_comp_v1_entry(param, flags, i);
3204 v1 = lov_comp_entry(comp_v1, i);
3205 objects = lov_v1v3_objects(v1);
3206 lov_v1v3_pool_name(v1, pool_name);
3208 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3209 param->fp_max_depth, param->fp_verbose,
3214 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3215 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3218 static inline bool has_any_comp_options(struct find_param *param)
3220 int verbose = param->fp_verbose;
3222 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3223 param->fp_check_comp_start || param->fp_check_comp_end ||
3224 param->fp_check_comp_flags)
3227 /* show full layout information, not component specific */
3228 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3231 return verbose & VERBOSE_COMP_OPTS;
3234 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3237 struct lov_user_md *lum = &orig->lmd_lmm;
3238 struct lov_user_mds_data *new;
3239 struct lov_comp_md_v1 *comp_v1;
3240 struct lov_comp_md_entry_v1 *ent;
3241 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3242 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3245 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3247 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3251 memcpy(new, orig, sizeof(lstat_t));
3253 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3254 comp_v1->lcm_magic = lum->lmm_magic;
3255 comp_v1->lcm_size = lum_off + lum_size;
3256 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3257 comp_v1->lcm_flags = 0;
3258 comp_v1->lcm_entry_count = 1;
3260 ent = &comp_v1->lcm_entries[0];
3262 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3263 ent->lcme_extent.e_start = 0;
3264 ent->lcme_extent.e_end = LUSTRE_EOF;
3265 ent->lcme_offset = lum_off;
3266 ent->lcme_size = lum_size;
3268 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3273 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3274 enum lov_dump_flags flags)
3276 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3278 if (has_any_comp_options(param)) {
3279 struct lov_user_mds_data *new_lmd, *orig_lmd;
3281 orig_lmd = param->fp_lmd;
3282 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3283 if (new_lmd != NULL) {
3284 param->fp_lmd = new_lmd;
3285 lov_dump_comp_v1(param, path, flags);
3286 param->fp_lmd = orig_lmd;
3292 if (magic == LOV_USER_MAGIC_V1) {
3293 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3294 param->fp_lmd->lmd_lmm.lmm_objects,
3295 path, param->fp_obd_index,
3296 param->fp_max_depth, param->fp_verbose,
3299 char pool_name[LOV_MAXPOOLNAME + 1];
3300 struct lov_user_ost_data_v1 *objects;
3301 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3303 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
3304 objects = lmmv3->lmm_objects;
3305 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3306 objects, path, param->fp_obd_index,
3307 param->fp_max_depth, param->fp_verbose,
3312 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3313 enum lov_dump_flags flags)
3317 if (param->fp_get_lmv || param->fp_get_default_lmv)
3318 magic = (__u32)param->fp_lmv_md->lum_magic;
3320 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3323 flags |= LDF_IS_RAW;
3328 case LOV_USER_MAGIC_V1:
3329 case LOV_USER_MAGIC_V3:
3330 lov_dump_plain_user_lmm(param, path, flags);
3333 case LMV_USER_MAGIC: {
3334 char pool_name[LOV_MAXPOOLNAME + 1];
3335 struct lmv_user_md *lum;
3337 lum = (struct lmv_user_md *)param->fp_lmv_md;
3338 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
3339 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3340 param->fp_max_depth, param->fp_verbose,
3344 case LOV_USER_MAGIC_COMP_V1:
3345 lov_dump_comp_v1(param, path, flags);
3348 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3349 "(expecting one of %#x %#x %#x %#x)\n",
3350 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3351 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3352 LMV_USER_MAGIC, LMV_MAGIC_V1);
3357 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3363 fname = strrchr(path, '/');
3365 /* It should be a file (or other non-directory) */
3366 if (fname == NULL) {
3367 dname = (char *)malloc(2);
3371 fname = (char *)path;
3373 dname = (char *)malloc(fname - path + 1);
3376 strncpy(dname, path, fname - path);
3377 dname[fname - path] = '\0';
3381 fd = open(dname, O_RDONLY | O_NONBLOCK);
3388 strcpy((char *)lum, fname);
3389 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3392 if (close(fd) == -1 && rc == 0)
3399 int llapi_file_lookup(int dirfd, const char *name)
3401 struct obd_ioctl_data data = { 0 };
3406 if (dirfd < 0 || name == NULL)
3409 data.ioc_version = OBD_IOCTL_VERSION;
3410 data.ioc_len = sizeof(data);
3411 data.ioc_inlbuf1 = (char *)name;
3412 data.ioc_inllen1 = strlen(name) + 1;
3414 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
3416 llapi_error(LLAPI_MSG_ERROR, rc,
3417 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3422 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3428 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3429 * Return -1 or 1 if file timestamp does not or does match the given criteria
3430 * correspondingly. Return 0 if the MDS time is being checked and there are
3431 * attributes on OSTs and it is not yet clear if the timespamp matches.
3433 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3434 * updated timestamps. */
3435 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3440 /* Check if file is accepted. */
3441 if (param->fp_atime) {
3442 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3443 param->fp_asign, param->fp_exclude_atime,
3450 if (param->fp_mtime) {
3451 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3452 param->fp_msign, param->fp_exclude_mtime,
3457 /* If the previous check matches, but this one is not yet clear,
3458 * we should return 0 to do an RPC on OSTs. */
3463 if (param->fp_ctime) {
3464 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3465 param->fp_csign, param->fp_exclude_ctime,
3470 /* If the previous check matches, but this one is not yet clear,
3471 * we should return 0 to do an RPC on OSTs. */
3480 * Check whether the stripes matches the indexes user provided
3484 static int check_obd_match(struct find_param *param)
3486 struct lov_user_ost_data_v1 *objects;
3487 struct lov_comp_md_v1 *comp_v1 = NULL;
3488 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3489 lstat_t *st = ¶m->fp_lmd->lmd_st;
3490 int i, j, k, count = 1;
3492 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3495 if (!S_ISREG(st->st_mode))
3498 /* Only those files should be accepted, which have a
3499 * stripe on the specified OST. */
3500 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3501 comp_v1 = (struct lov_comp_md_v1 *)v1;
3502 count = comp_v1->lcm_entry_count;
3505 for (i = 0; i < count; i++) {
3507 v1 = lov_comp_entry(comp_v1, i);
3509 objects = lov_v1v3_objects(v1);
3511 for (j = 0; j < v1->lmm_stripe_count; j++) {
3512 for (k = 0; k < param->fp_num_obds; k++) {
3513 if (param->fp_obd_indexes[k] ==
3514 objects[j].l_ost_idx)
3515 return !param->fp_exclude_obd;
3520 return param->fp_exclude_obd;
3523 static int check_mdt_match(struct find_param *param)
3527 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3530 /* FIXME: For striped dir, we should get stripe information and check */
3531 for (i = 0; i < param->fp_num_mdts; i++) {
3532 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3533 return !param->fp_exclude_mdt;
3536 if (param->fp_exclude_mdt)
3543 * Check whether the obd is active or not, if it is
3544 * not active, just print the object affected by this
3547 static int print_failed_tgt(struct find_param *param, char *path, int type)
3549 struct obd_statfs stat_buf;
3550 struct obd_uuid uuid_buf;
3553 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3556 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3557 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3558 ret = llapi_obd_statfs(path, type,
3559 param->fp_obd_index, &stat_buf,
3562 llapi_printf(LLAPI_MSG_NORMAL,
3563 "obd_uuid: %s failed %s ",
3564 param->fp_obd_uuid->uuid,
3571 static int find_check_stripe_size(struct find_param *param)
3573 struct lov_comp_md_v1 *comp_v1 = NULL;
3574 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3575 int ret, i, count = 1;
3577 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3578 comp_v1 = (struct lov_comp_md_v1 *)v1;
3579 count = comp_v1->lcm_entry_count;
3580 ret = param->fp_exclude_stripe_size ? 1 : -1;
3583 for (i = 0; i < count; i++) {
3585 v1 = lov_comp_entry(comp_v1, i);
3587 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3588 param->fp_stripe_size_sign,
3589 param->fp_exclude_stripe_size,
3590 param->fp_stripe_size_units, 0);
3591 /* If any stripe_size matches */
3599 static __u32 find_get_stripe_count(struct find_param *param)
3601 struct lov_comp_md_v1 *comp_v1 = NULL;
3602 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3604 __u32 stripe_count = 0;
3606 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3607 comp_v1 = (struct lov_comp_md_v1 *)v1;
3608 count = comp_v1->lcm_entry_count;
3611 for (i = 0; i < count; i++) {
3613 v1 = lov_comp_entry(comp_v1, i);
3614 stripe_count += v1->lmm_stripe_count;
3617 return stripe_count;
3620 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3622 static int find_check_layout(struct find_param *param)
3624 struct lov_comp_md_v1 *comp_v1 = NULL;
3625 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3627 bool found = false, valid = false;
3629 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3630 comp_v1 = (struct lov_comp_md_v1 *)v1;
3631 count = comp_v1->lcm_entry_count;
3634 for (i = 0; i < count; i++) {
3636 v1 = lov_comp_entry(comp_v1, i);
3638 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3642 if (v1->lmm_pattern & param->fp_layout) {
3651 if ((found && !param->fp_exclude_layout) ||
3652 (!found && param->fp_exclude_layout))
3658 static int find_check_pool(struct find_param *param)
3660 struct lov_comp_md_v1 *comp_v1 = NULL;
3661 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3662 struct lov_user_md_v3 *v3 = (void *)v1;
3666 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3667 comp_v1 = (struct lov_comp_md_v1 *)v1;
3668 count = comp_v1->lcm_entry_count;
3669 /* empty requested pool is taken as no pool search */
3670 if (count == 0 && param->fp_poolname[0] == '\0')
3674 for (i = 0; i < count; i++) {
3675 if (comp_v1 != NULL)
3676 v1 = lov_comp_entry(comp_v1, i);
3678 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3679 (param->fp_poolname[0] == '\0')) ||
3680 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3681 (strncmp(v3->lmm_pool_name,
3682 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3683 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3684 (strcmp(param->fp_poolname, "*") == 0))) {
3690 if ((found && !param->fp_exclude_pool) ||
3691 (!found && param->fp_exclude_pool))
3697 static int find_check_comp_options(struct find_param *param)
3699 lstat_t *st = ¶m->fp_lmd->lmd_st;
3700 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3701 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3702 struct lov_comp_md_entry_v1 *entry;
3705 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3706 comp_v1 = (struct lov_comp_md_v1 *)v1;
3708 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3709 if (forged_v1 == NULL)
3711 comp_v1 = forged_v1;
3712 comp_v1->lcm_entry_count = 1;
3713 entry = &comp_v1->lcm_entries[0];
3714 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3715 entry->lcme_extent.e_start = 0;
3716 entry->lcme_extent.e_end = LUSTRE_EOF;
3719 /* invalid case, don't match for any kind of search. */
3720 if (comp_v1->lcm_entry_count == 0) {
3725 if (param->fp_check_comp_count) {
3726 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3727 param->fp_comp_count,
3728 param->fp_comp_count_sign,
3729 param->fp_exclude_comp_count, 1, 0);
3735 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3736 entry = &comp_v1->lcm_entries[i];
3738 if (param->fp_check_comp_flags) {
3739 if (((entry->lcme_flags & param->fp_comp_flags) &&
3740 param->fp_exclude_comp_flags) ||
3741 (!(entry->lcme_flags & param->fp_comp_flags) &&
3742 !param->fp_exclude_comp_flags))
3751 if (param->fp_check_comp_start) {
3752 ret = find_value_cmp(entry->lcme_extent.e_start,
3753 param->fp_comp_start,
3754 param->fp_comp_start_sign,
3755 param->fp_exclude_comp_start,
3756 param->fp_comp_start_units, 0);
3761 if (param->fp_check_comp_end) {
3762 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3768 /* the component matches all criteria */
3772 if (forged_v1 != NULL)
3777 static bool find_check_lmm_info(struct find_param *param)
3779 return param->fp_check_pool || param->fp_check_stripe_count ||
3780 param->fp_check_stripe_size || param->fp_check_layout ||
3781 param->fp_check_comp_count || param->fp_check_comp_end ||
3782 param->fp_check_comp_start || param->fp_check_comp_flags ||
3783 param->fp_check_projid;
3787 * Get file/directory project id.
3788 * by the open fd resides on.
3789 * Return 0 and project id on success, or -ve errno.
3791 static int fget_projid(int fd, int *projid)
3796 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3800 *projid = fsx.fsx_projid;
3804 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3805 void *data, struct dirent64 *de)
3807 struct find_param *param = (struct find_param *)data;
3808 DIR *dir = dirp == NULL ? NULL : *dirp;
3809 int decision = 1; /* 1 is accepted; -1 is rejected. */
3810 lstat_t *st = ¶m->fp_lmd->lmd_st;
3812 int checked_type = 0;
3814 __u32 stripe_count = 0;
3817 if (parent == NULL && dir == NULL)
3820 /* If a regular expression is presented, make the initial decision */
3821 if (param->fp_pattern != NULL) {
3822 char *fname = strrchr(path, '/');
3823 fname = (fname == NULL ? path : fname + 1);
3824 ret = fnmatch(param->fp_pattern, fname, 0);
3825 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3826 (ret == 0 && param->fp_exclude_pattern))
3830 /* See if we can check the file type from the dirent. */
3831 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3834 if (DTTOIF(de->d_type) == param->fp_type) {
3835 if (param->fp_exclude_type)
3838 if (!param->fp_exclude_type)
3845 /* Request MDS for the stat info if some of these parameters need
3846 * to be compared. */
3847 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3848 param->fp_check_uid || param->fp_check_gid ||
3849 param->fp_atime || param->fp_mtime || param->fp_ctime ||
3850 param->fp_check_size || find_check_lmm_info(param) ||
3851 param->fp_check_mdt_count || param->fp_check_hash_type)
3854 if (param->fp_type != 0 && checked_type == 0)
3857 if (decision == 0) {
3858 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
3859 param->fp_get_lmv = 1;
3860 ret = cb_get_dirstripe(path, dir, param);
3865 param->fp_lmd->lmd_lmm.lmm_magic = 0;
3866 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
3867 param->fp_lum_size);
3868 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
3869 find_check_lmm_info(param)) {
3870 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
3872 /* We need to "fake" the "use the default" values
3873 * since the lmm struct is zeroed out at this point. */
3874 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3875 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
3877 ostid_set_seq(&lmm->lmm_oi,
3878 FID_SEQ_LOV_DEFAULT);
3879 lmm->lmm_stripe_size = 0;
3880 lmm->lmm_stripe_count = 0;
3881 lmm->lmm_stripe_offset = -1;
3883 if (ret == 0 && param->fp_mdt_uuid != NULL) {
3885 ret = llapi_file_fget_mdtidx(dirfd(dir),
3886 ¶m->fp_file_mdt_index);
3887 } else if (S_ISREG(st->st_mode)) {
3888 /* FIXME: we could get the MDT index from the
3889 * file's FID in lmd->lmd_lmm.lmm_oi without
3890 * opening the file, once we are sure that
3891 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
3892 * That would still be an ioctl() to map the
3893 * FID to the MDT, but not an open RPC. */
3894 fd = open(path, O_RDONLY);
3896 ret = llapi_file_fget_mdtidx(fd,
3897 ¶m->fp_file_mdt_index);
3902 /* For a special file, we assume it resides on
3903 * the same MDT as the parent directory. */
3904 ret = llapi_file_fget_mdtidx(dirfd(parent),
3905 ¶m->fp_file_mdt_index);
3916 stripe_count = find_get_stripe_count(param);
3920 if (param->fp_type && !checked_type) {
3921 if ((st->st_mode & S_IFMT) == param->fp_type) {
3922 if (param->fp_exclude_type)
3925 if (!param->fp_exclude_type)
3931 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
3932 if (lustre_fs && param->fp_got_uuids &&
3933 param->fp_dev != st->st_dev) {
3934 /* A lustre/lustre mount point is crossed. */
3935 param->fp_got_uuids = 0;
3936 param->fp_obds_printed = 0;
3937 param->fp_mdt_index = OBD_NOT_FOUND;
3938 param->fp_obd_index = OBD_NOT_FOUND;
3941 if (lustre_fs && !param->fp_got_uuids) {
3942 ret = setup_target_indexes(dir ? dir : parent, path,
3947 param->fp_dev = st->st_dev;
3948 } else if (!lustre_fs && param->fp_got_uuids) {
3949 /* A lustre/non-lustre mount point is crossed. */
3950 param->fp_got_uuids = 0;
3951 param->fp_mdt_index = OBD_NOT_FOUND;
3952 param->fp_obd_index = OBD_NOT_FOUND;
3956 if (param->fp_check_stripe_size) {
3957 decision = find_check_stripe_size(param);
3962 if (param->fp_check_stripe_count) {
3963 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
3964 param->fp_stripe_count_sign,
3965 param->fp_exclude_stripe_count, 1, 0);
3970 if (param->fp_check_mdt_count) {
3971 decision = find_value_cmp(
3972 param->fp_lmv_md->lum_stripe_count,
3973 param->fp_mdt_count,
3974 param->fp_mdt_count_sign,
3975 param->fp_exclude_mdt_count, 1, 0);
3980 if (param->fp_check_layout) {
3981 decision = find_check_layout(param);
3986 if (param->fp_check_hash_type) {
3989 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
3990 if ((found && param->fp_exclude_hash_type) ||
3991 (!found && !param->fp_exclude_hash_type)) {
3997 /* If an OBD UUID is specified but none matches, skip this file. */
3998 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
3999 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4002 /* If an OST or MDT UUID is given, and some OST matches,
4004 if (param->fp_obd_index != OBD_NOT_FOUND ||
4005 param->fp_mdt_index != OBD_NOT_FOUND) {
4006 if (param->fp_obd_uuid) {
4007 if (check_obd_match(param)) {
4008 /* If no mdtuuid is given, we are done.
4009 * Otherwise, fall through to the mdtuuid
4011 if (!param->fp_mdt_uuid)
4018 if (param->fp_mdt_uuid) {
4019 if (check_mdt_match(param))
4026 if (param->fp_check_uid) {
4027 if (st->st_uid == param->fp_uid) {
4028 if (param->fp_exclude_uid)
4031 if (!param->fp_exclude_uid)
4036 if (param->fp_check_gid) {
4037 if (st->st_gid == param->fp_gid) {
4038 if (param->fp_exclude_gid)
4041 if (!param->fp_exclude_gid)
4046 if (param->fp_check_projid) {
4050 fd = open(path, O_RDONLY);
4053 ret = fget_projid(fd, &projid);
4058 if (projid == param->fp_projid) {
4059 if (param->fp_exclude_uid)
4062 if (!param->fp_exclude_projid)
4067 if (param->fp_check_pool) {
4068 decision = find_check_pool(param);
4073 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4074 param->fp_check_comp_start || param->fp_check_comp_end) {
4075 decision = find_check_comp_options(param);
4080 /* Check the time on mds. */
4082 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4085 for_mds = lustre_fs ?
4086 (S_ISREG(st->st_mode) && stripe_count) : 0;
4087 decision = find_time_check(st, param, for_mds);
4092 /* If file still fits the request, ask ost for updated info.
4093 The regular stat is almost of the same speed as some new
4094 'glimpse-size-ioctl'. */
4096 if (param->fp_check_size && S_ISREG(st->st_mode) && stripe_count)
4099 if (param->fp_check_size && S_ISDIR(st->st_mode))
4103 /* For regular files with the stripe the decision may have not
4104 * been taken yet if *time or size is to be checked. */
4105 if (param->fp_obd_index != OBD_NOT_FOUND)
4106 print_failed_tgt(param, path, LL_STATFS_LOV);
4108 if (param->fp_mdt_index != OBD_NOT_FOUND)
4109 print_failed_tgt(param, path, LL_STATFS_LMV);
4112 ret = fstat_f(dirfd(dir), st);
4113 else if (de != NULL)
4114 ret = fstatat_f(dirfd(parent), de->d_name, st,
4115 AT_SYMLINK_NOFOLLOW);
4117 ret = lstat_f(path, st);
4120 if (errno == ENOENT) {
4121 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4122 "warning: %s: %s does not exist",
4127 llapi_error(LLAPI_MSG_ERROR, ret,
4128 "%s: IOC_LOV_GETINFO on %s failed",
4134 /* Check the time on osc. */
4135 decision = find_time_check(st, param, 0);
4140 if (param->fp_check_size)
4141 decision = find_value_cmp(st->st_size, param->fp_size,
4142 param->fp_size_sign,
4143 param->fp_exclude_size,
4144 param->fp_size_units, 0);
4146 if (decision != -1) {
4147 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4148 if (param->fp_zero_end)
4149 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4151 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4156 /* Do not get down anymore? */
4157 if (param->fp_depth == param->fp_max_depth) {
4168 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4169 void *param_data, struct dirent64 *de)
4171 struct find_param *param = (struct find_param *)param_data;
4172 DIR *tmp_parent = parent;
4173 char raw[MAX_IOC_BUFLEN] = {'\0'};
4175 struct obd_ioctl_data data = { 0 };
4182 if (parent == NULL && dirp == NULL)
4188 if (parent == NULL) {
4189 tmp_parent = opendir_parent(path);
4190 if (tmp_parent == NULL) {
4193 llapi_error(LLAPI_MSG_ERROR, ret,
4194 "can not open %s", path);
4199 fd = dirfd(tmp_parent);
4201 path_copy = strdup(path);
4202 filename = basename(path_copy);
4203 data.ioc_inlbuf1 = (char *)filename;
4204 data.ioc_inllen1 = strlen(filename) + 1;
4205 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4206 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4207 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4209 llapi_error(LLAPI_MSG_ERROR, ret,
4210 "llapi_obd_statfs: error packing ioctl data");
4215 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4217 if (errno == EBUSY && !retry) {
4218 /* because migrate may not be able to lock all involved
4219 * objects in order, for some of them it try lock, while
4220 * there may be conflicting COS locks and cause migrate
4221 * fail with EBUSY, hope a sync() could cause
4222 * transaction commit and release these COS locks. */
4228 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4229 path, strerror(-ret), ret);
4231 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4232 fprintf(stdout, "migrate %s to MDT%d\n",
4233 path, param->fp_mdt_index);
4238 /* If the directory is being migration, we need
4239 * close the directory after migration,
4240 * so the old directory cache will be cleanup
4241 * on the client side, and re-open to get the
4242 * new directory handle */
4243 *dirp = opendir(path);
4244 if (*dirp == NULL) {
4246 llapi_error(LLAPI_MSG_ERROR, ret,
4247 "%s: Failed to open '%s'", __func__, path);
4252 closedir(tmp_parent);
4259 int llapi_migrate_mdt(char *path, struct find_param *param)
4261 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4264 int llapi_mv(char *path, struct find_param *param)
4266 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4267 static bool printed;
4270 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4271 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4275 return llapi_migrate_mdt(path, param);
4278 int llapi_find(char *path, struct find_param *param)
4280 return param_callback(path, cb_find_init, cb_common_fini, param);
4284 * Get MDT number that the file/directory inode referenced
4285 * by the open fd resides on.
4286 * Return 0 and mdtidx on success, or -ve errno.
4288 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4290 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4295 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4296 struct dirent64 *de)
4298 struct find_param *param = (struct find_param *)data;
4299 DIR *d = dirp == NULL ? NULL : *dirp;
4303 if (parent == NULL && d == NULL)
4307 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4308 } else /* if (parent) */ {
4311 fd = open(path, O_RDONLY | O_NOCTTY);
4313 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4321 if (ret == -ENODATA) {
4322 if (!param->fp_obd_uuid)
4323 llapi_printf(LLAPI_MSG_NORMAL,
4324 "'%s' has no stripe info\n", path);
4326 } else if (ret == -ENOENT) {
4327 llapi_error(LLAPI_MSG_WARN, ret,
4328 "warning: %s: '%s' does not exist",
4331 } else if (ret == -ENOTTY) {
4332 llapi_error(LLAPI_MSG_ERROR, ret,
4333 "%s: '%s' not on a Lustre fs",
4336 llapi_error(LLAPI_MSG_ERROR, ret,
4337 "error: %s: '%s' failed get_mdtidx",
4343 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4344 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4346 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4350 /* Do not go down anymore? */
4351 if (param->fp_depth == param->fp_max_depth)
4359 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4360 struct dirent64 *de)
4362 struct find_param *param = (struct find_param *)data;
4363 DIR *d = dirp == NULL ? NULL : *dirp;
4366 if (parent == NULL && d == NULL)
4369 if (param->fp_obd_uuid) {
4370 param->fp_quiet = 1;
4371 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4377 if (param->fp_get_lmv || param->fp_get_default_lmv) {
4378 ret = cb_get_dirstripe(path, d, param);
4380 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
4381 (void *)¶m->fp_lmd->lmd_lmm);
4384 } else if (parent && !param->fp_get_lmv && !param->fp_get_default_lmv) {
4385 char *fname = strrchr(path, '/');
4386 fname = (fname == NULL ? path : fname + 1);
4388 strlcpy((char *)¶m->fp_lmd->lmd_lmm, fname,
4389 param->fp_lum_size);
4391 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
4392 (void *)¶m->fp_lmd->lmd_lmm);
4398 if (errno == ENODATA && d != NULL) {
4399 /* We need to "fake" the "use the default" values
4400 * since the lmm struct is zeroed out at this point.
4401 * The magic needs to be set in order to satisfy
4402 * a check later on in the code path.
4403 * The object_seq needs to be set for the "(Default)"
4404 * prefix to be displayed. */
4405 if (param->fp_get_default_lmv) {
4406 struct lmv_user_md *lum = param->fp_lmv_md;
4408 lum->lum_magic = LMV_USER_MAGIC;
4409 lum->lum_stripe_count = 0;
4410 lum->lum_stripe_offset = -1;
4412 } else if (param->fp_get_lmv) {
4413 struct lmv_user_md *lum = param->fp_lmv_md;
4416 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4419 lum->lum_magic = LMV_MAGIC_V1;
4420 lum->lum_stripe_count = 0;
4421 lum->lum_stripe_offset = mdtidx;
4424 struct lov_user_md *lmm =
4425 ¶m->fp_lmd->lmd_lmm;
4427 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4429 ostid_set_seq(&lmm->lmm_oi,
4430 FID_SEQ_LOV_DEFAULT);
4431 lmm->lmm_stripe_count = 0;
4432 lmm->lmm_stripe_size = 0;
4433 lmm->lmm_stripe_offset = -1;
4436 } else if (errno == ENODATA && parent != NULL) {
4437 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4438 llapi_printf(LLAPI_MSG_NORMAL,
4439 "%s has no stripe info\n", path);
4441 } else if (errno == ENOENT) {
4442 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4443 "warning: %s: %s does not exist",
4446 } else if (errno == ENOTTY) {
4448 llapi_error(LLAPI_MSG_ERROR, ret,
4449 "%s: '%s' not on a Lustre fs?",
4454 llapi_error(LLAPI_MSG_ERROR, ret,
4455 "error: %s: %s failed for %s",
4456 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4457 "IOC_MDC_GETFILESTRIPE", path);
4464 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4465 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4468 /* Do not get down anymore? */
4469 if (param->fp_depth == param->fp_max_depth)
4477 int llapi_getstripe(char *path, struct find_param *param)
4479 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4480 cb_get_mdt_index : cb_getstripe,
4481 cb_common_fini, param);
4484 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4485 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4487 char raw[MAX_IOC_BUFLEN] = {'\0'};
4489 struct obd_ioctl_data data = { 0 };
4492 data.ioc_inlbuf1 = (char *)&type;
4493 data.ioc_inllen1 = sizeof(__u32);
4494 data.ioc_inlbuf2 = (char *)&index;
4495 data.ioc_inllen2 = sizeof(__u32);
4496 data.ioc_pbuf1 = (char *)stat_buf;
4497 data.ioc_plen1 = sizeof(struct obd_statfs);
4498 data.ioc_pbuf2 = (char *)uuid_buf;
4499 data.ioc_plen2 = sizeof(struct obd_uuid);
4501 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4503 llapi_error(LLAPI_MSG_ERROR, rc,
4504 "llapi_obd_statfs: error packing ioctl data");
4508 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4510 return rc < 0 ? -errno : 0;
4513 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4514 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4519 fd = open(path, O_RDONLY);
4522 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4524 /* If we can't even open a file on the filesystem (e.g. with
4525 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4529 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4536 #define MAX_STRING_SIZE 128
4538 int llapi_ping(char *obd_type, char *obd_name)
4544 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4545 obd_type, obd_name);
4549 fd = open(path.gl_pathv[0], O_WRONLY);
4552 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4557 /* The purpose is to send a byte as a ping, whatever this byte is. */
4558 /* coverity[uninit_use_in_call] */
4559 rc = write(fd, buf, 1);
4567 cfs_free_param_data(&path);
4571 int llapi_target_iterate(int type_num, char **obd_type,
4572 void *args, llapi_cb_t cb)
4574 char buf[MAX_STRING_SIZE];
4579 rc = cfs_get_param_paths(¶m, "devices");
4583 fp = fopen(param.gl_pathv[0], "r");
4586 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4591 while (fgets(buf, sizeof(buf), fp) != NULL) {
4592 char *obd_type_name = NULL;
4593 char *obd_name = NULL;
4594 char *obd_uuid = NULL;
4596 struct obd_statfs osfs_buffer;
4598 while(bufp[0] == ' ')
4601 for(i = 0; i < 3; i++) {
4602 obd_type_name = strsep(&bufp, " ");
4604 obd_name = strsep(&bufp, " ");
4605 obd_uuid = strsep(&bufp, " ");
4607 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4609 for (i = 0; i < type_num; i++) {
4610 if (strcmp(obd_type_name, obd_type[i]) != 0)
4613 cb(obd_type_name, obd_name, obd_uuid, args);
4618 cfs_free_param_data(¶m);
4622 static void do_target_check(char *obd_type_name, char *obd_name,
4623 char *obd_uuid, void *args)
4627 rc = llapi_ping(obd_type_name, obd_name);
4628 if (rc == ENOTCONN) {
4629 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4631 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4633 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4637 int llapi_target_check(int type_num, char **obd_type, char *dir)
4639 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4642 #undef MAX_STRING_SIZE
4644 /* Is this a lustre fs? */
4645 int llapi_is_lustre_mnttype(const char *type)
4647 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4650 /* Is this a lustre client fs? */
4651 int llapi_is_lustre_mnt(struct mntent *mnt)
4653 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4654 strstr(mnt->mnt_fsname, ":/") != NULL);
4657 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4659 char fsname[PATH_MAX + 1];
4663 rc = llapi_search_fsname(mnt, fsname);
4665 llapi_err_noerrno(LLAPI_MSG_ERROR,
4666 "'%s' isn't on Lustre filesystem", mnt);
4670 root = open(mnt, O_RDONLY | O_DIRECTORY);
4673 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4677 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4685 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4686 * format must have %s%s, buf must be > 16
4687 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4688 * then buf = "lustre-MDT0000"
4690 static int get_mdtname(char *name, char *format, char *buf)
4692 char suffix[]="-MDT0000";
4693 int len = strlen(name);
4695 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4696 name[len - 5] = '\0';
4701 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4704 /* Not enough room to add suffix */
4705 llapi_err_noerrno(LLAPI_MSG_ERROR,
4706 "Invalid MDT name |%s|", name);
4711 return sprintf(buf, format, name, suffix);
4714 /** ioctl on filsystem root, with mdtindex sent as data
4715 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4716 * \param mdtidxp pointer to integer within data to be filled in with the
4717 * mdt index (0 if no mdt is specified). NULL won't be filled.
4719 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4727 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4728 Open root and parse mdt index. */
4729 if (mdtname[0] == '/') {
4731 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4732 (char *)mdtname, -1);
4734 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4736 ptr = fsname + strlen(fsname) - 8;
4738 index = strtol(ptr + 4, NULL, 16);
4739 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4743 llapi_err_noerrno(LLAPI_MSG_ERROR,
4744 "Can't open %s: %d\n", mdtname, rc);
4751 rc = ioctl(fd, opc, data);
4760 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4761 int buflen, long long *recno, int *linkno)
4763 const char *fidstr_orig = fidstr;
4765 struct getinfo_fid2path *gf;
4770 while (*fidstr == '[')
4773 sscanf(fidstr, SFID, RFID(&fid));
4774 if (!fid_is_sane(&fid)) {
4775 llapi_err_noerrno(LLAPI_MSG_ERROR,
4776 "bad FID format '%s', should be [seq:oid:ver]"
4777 " (e.g. "DFID")\n", fidstr_orig,
4778 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4782 gf = malloc(sizeof(*gf) + buflen);
4787 gf->gf_recno = *recno;
4788 gf->gf_linkno = *linkno;
4789 gf->gf_pathlen = buflen;
4791 /* Take path or fsname */
4792 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4797 /* strip out instances of // */
4798 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4799 if ((*a == '/') && (*(a + 1) == '/'))
4806 if (buf[0] == '\0') { /* ROOT path */
4811 *recno = gf->gf_recno;
4812 *linkno = gf->gf_linkno;
4819 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
4822 struct lustre_mdt_attrs *lma;
4826 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4828 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4831 lma = (struct lustre_mdt_attrs *)buf;
4832 fid_le_to_cpu(fid, &lma->lma_self_fid);
4836 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
4841 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4850 int llapi_fd2fid(int fd, struct lu_fid *fid)
4854 memset(fid, 0, sizeof(*fid));
4856 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4857 if (rc == -EINVAL || rc == -ENOTTY)
4858 rc = fid_from_lma(NULL, fd, fid);
4863 int llapi_path2fid(const char *path, struct lu_fid *fid)
4867 memset(fid, 0, sizeof(*fid));
4868 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4870 if (errno == ELOOP || errno == ENXIO)
4871 return fid_from_lma(path, -1, fid);
4875 rc = llapi_fd2fid(fd, fid);
4876 if (rc == -EINVAL || rc == -ENOTTY)
4877 rc = fid_from_lma(path, -1, fid);
4883 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
4884 char *name, size_t name_size)
4886 struct getparent *gp;
4889 gp = malloc(sizeof(*gp) + name_size);
4893 gp->gp_linkno = linkno;
4894 gp->gp_name_size = name_size;
4896 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4902 *parent_fid = gp->gp_fid;
4904 strncpy(name, gp->gp_name, name_size);
4905 name[name_size - 1] = '\0';
4912 int llapi_path2parent(const char *path, unsigned int linkno,
4913 struct lu_fid *parent_fid, char *name, size_t name_size)
4918 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4922 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4927 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4932 root = open(mnt, O_RDONLY | O_DIRECTORY);
4935 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4939 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
4942 llapi_error(LLAPI_MSG_ERROR, rc,
4943 "ioctl on %s for getting connect flags failed", mnt);
4950 * Get a 64-bit value representing the version of file data pointed by fd.
4952 * Each write or truncate, flushed on OST, will change this value. You can use
4953 * this value to verify if file data was modified. This only checks the file
4954 * data, not metadata.
4956 * \param flags 0: no flush pages, usually used it the process has already
4958 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4960 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4961 * pages from clients.
4963 * \retval 0 on success.
4964 * \retval -errno on error.
4966 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4969 struct ioc_data_version idv;
4971 idv.idv_flags = (__u32)flags;
4973 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4977 *data_version = idv.idv_version;
4983 * Fetch layout version from OST objects. Layout version on OST objects are
4984 * only set when the file is a mirrored file AND after the file has been
4985 * written at least once.
4987 * It actually fetches the least layout version from the objects.
4989 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
4992 struct ioc_data_version idv = { 0 };
4994 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4998 *layout_version = idv.idv_layout_version;
5004 * Create a file without any name open it for read/write
5006 * - file is created as if it were a standard file in the given \a directory
5007 * - file does not appear in \a directory and mtime does not change because
5008 * the filename is handled specially by the Lustre MDS.
5009 * - file is removed at final close
5010 * - file modes are rw------- since it doesn't make sense to have a read-only
5011 * or write-only file that cannot be opened again.
5012 * - if user wants another mode it must use fchmod() on the open file, no
5013 * security problems arise because it cannot be opened by another process.
5015 * \param[in] directory directory from which to inherit layout/MDT idx
5016 * \param[in] idx MDT index on which the file is created,
5017 * \a idx == -1 means no specific MDT is requested
5018 * \param[in] open_flags standard open(2) flags
5020 * \retval 0 on success.
5021 * \retval -errno on error.
5023 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5025 char file_path[PATH_MAX];
5026 char filename[PATH_MAX];
5027 int saved_errno = errno;
5035 snprintf(filename, sizeof(filename),
5036 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5038 snprintf(filename, sizeof(filename),
5039 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5041 rc = snprintf(file_path, sizeof(file_path),
5042 "%s/%s", directory, filename);
5043 if (rc >= sizeof(file_path))
5046 fd = open(file_path,
5047 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5049 } while (fd < 0 && errno == EEXIST);
5052 llapi_error(LLAPI_MSG_ERROR, errno,
5053 "Cannot create volatile file '%s' in '%s'",
5054 filename + LUSTRE_VOLATILE_HDR_LEN,
5059 /* Unlink file in case this wasn't a Lustre filesystem and the
5060 * magic volatile filename wasn't handled as intended. The
5061 * effect is the same. If volatile open was supported then we
5062 * expect unlink() to return -ENOENT. */
5063 (void)unlink(file_path);
5065 /* Since we are returning successfully we restore errno (and
5066 * mask out possible EEXIST from open() and ENOENT from
5068 errno = saved_errno;
5074 * Swap the layouts between 2 file descriptors
5075 * the 2 files must be open for writing
5076 * first fd received the ioctl, second fd is passed as arg
5077 * this is assymetric but avoid use of root path for ioctl
5079 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5080 int gid, __u64 flags)
5082 struct lustre_swap_layouts lsl;
5087 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5088 rc = fstat(fd1, &st1);
5092 rc = fstat(fd2, &st2);
5097 lsl.sl_flags = flags;
5101 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5105 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5106 struct timeval tv1[2];
5107 struct timeval tv2[2];
5109 memset(tv1, 0, sizeof(tv1));
5110 memset(tv2, 0, sizeof(tv2));
5112 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5113 tv1[0].tv_sec = st1.st_atime;
5114 tv2[0].tv_sec = st2.st_atime;
5116 tv1[0].tv_sec = st2.st_atime;
5117 tv2[0].tv_sec = st1.st_atime;
5120 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5121 tv1[1].tv_sec = st1.st_mtime;
5122 tv2[1].tv_sec = st2.st_mtime;
5124 tv1[1].tv_sec = st2.st_mtime;
5125 tv2[1].tv_sec = st1.st_mtime;
5128 rc = futimes(fd1, tv1);
5132 rc = futimes(fd2, tv2);
5140 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5147 while (grp_id == 0);
5149 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5157 * Swap the layouts between 2 files
5158 * the 2 files are open in write
5160 int llapi_swap_layouts(const char *path1, const char *path2,
5161 __u64 dv1, __u64 dv2, __u64 flags)
5165 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5168 llapi_error(LLAPI_MSG_ERROR, rc,
5169 "error: cannot open '%s' for write", path1);
5173 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5176 llapi_error(LLAPI_MSG_ERROR, rc,
5177 "error: cannot open '%s' for write", path2);
5181 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5183 llapi_error(LLAPI_MSG_ERROR, rc,
5184 "error: cannot swap layout between '%s' and '%s'",
5195 * Attempt to open a file with Lustre file identifier \a fid
5196 * and return an open file descriptor.
5198 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5199 * \param[in] fid Lustre file identifier of file to open
5200 * \param[in] flags open() flags
5202 * \retval non-negative file descriptor on successful open
5203 * \retval -1 if an error occurred
5205 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5208 char mntdir[PATH_MAX];
5209 char path[PATH_MAX];
5212 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5216 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5217 return open(path, flags);
5223 * \param fd File to lock.
5224 * \param gid Group Identifier.
5226 * \retval 0 on success.
5227 * \retval -errno on failure.
5229 int llapi_group_lock(int fd, int gid)
5233 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5236 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5244 * \param fd File to unlock.
5245 * \param gid Group Identifier.
5247 * \retval 0 on success.
5248 * \retval -errno on failure.
5250 int llapi_group_unlock(int fd, int gid)
5254 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5257 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");