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, 2017, 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;
82 const char *liblustreapi_cmd;
84 char *mdt_hash_name[] = { "none",
85 LMV_HASH_NAME_ALL_CHARS,
86 LMV_HASH_NAME_FNV_1A_64 };
88 void llapi_msg_set_level(int level)
90 /* ensure level is in the good range */
91 if (level < LLAPI_MSG_OFF)
92 llapi_msg_level = LLAPI_MSG_OFF;
93 else if (level > LLAPI_MSG_MAX)
94 llapi_msg_level = LLAPI_MSG_MAX;
96 llapi_msg_level = level;
99 int llapi_msg_get_level(void)
101 return llapi_msg_level;
104 void llapi_set_command_name(const char *cmd)
106 liblustreapi_cmd = cmd;
109 void llapi_clear_command_name(void)
111 liblustreapi_cmd = NULL;
114 static void error_callback_default(enum llapi_message_level level, int err,
115 const char *fmt, va_list ap)
117 if (liblustreapi_cmd != NULL)
118 fprintf(stderr, "%s %s: ", program_invocation_short_name,
121 fprintf(stderr, "%s: ", program_invocation_short_name);
122 vfprintf(stderr, fmt, ap);
123 if (level & LLAPI_MSG_NO_ERRNO)
124 fprintf(stderr, "\n");
126 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
129 static void info_callback_default(enum llapi_message_level level, int err,
130 const char *fmt, va_list ap)
132 if (liblustreapi_cmd != NULL)
133 fprintf(stderr, "%s %s: ", program_invocation_short_name,
136 fprintf(stderr, "%s: ", program_invocation_short_name);
137 vfprintf(stdout, fmt, ap);
140 static llapi_log_callback_t llapi_error_callback = error_callback_default;
141 static llapi_log_callback_t llapi_info_callback = info_callback_default;
144 /* llapi_error will preserve errno */
145 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
148 int tmp_errno = errno;
150 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
154 llapi_error_callback(level, abs(err), fmt, args);
159 /* llapi_printf will preserve errno */
160 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
163 int tmp_errno = errno;
165 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
169 llapi_info_callback(level, 0, fmt, args);
175 * Set a custom error logging function. Passing in NULL will reset the logging
176 * callback to its default value.
178 * This function returns the value of the old callback.
180 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
182 llapi_log_callback_t old = llapi_error_callback;
185 llapi_error_callback = cb;
187 llapi_error_callback = error_callback_default;
193 * Set a custom info logging function. Passing in NULL will reset the logging
194 * callback to its default value.
196 * This function returns the value of the old callback.
198 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
200 llapi_log_callback_t old = llapi_info_callback;
203 llapi_info_callback = cb;
205 llapi_info_callback = info_callback_default;
211 * size_units is to be initialized (or zeroed) by caller.
213 int llapi_parse_size(const char *optarg, unsigned long long *size,
214 unsigned long long *size_units, int bytes_spec)
217 char *argbuf = (char *)optarg;
218 unsigned long long frac = 0, frac_d = 1;
220 if (strncmp(optarg, "-", 1) == 0)
223 if (*size_units == 0)
226 *size = strtoull(argbuf, &end, 0);
227 if (end != NULL && *end == '.') {
231 frac = strtoull(argbuf, &end, 10);
232 /* count decimal places */
233 for (i = 0; i < (end - argbuf); i++)
238 if ((*end == 'b') && *(end + 1) == '\0' &&
239 (*size & (~0ULL << (64 - 9))) == 0 &&
241 *size_units = 1 << 9;
242 } else if ((*end == 'b') &&
243 *(end + 1) == '\0' &&
246 } else if ((*end == 'k' || *end == 'K') &&
247 *(end + 1) == '\0' &&
248 (*size & (~0ULL << (64 - 10))) == 0) {
249 *size_units = 1 << 10;
250 } else if ((*end == 'm' || *end == 'M') &&
251 *(end + 1) == '\0' &&
252 (*size & (~0ULL << (64 - 20))) == 0) {
253 *size_units = 1 << 20;
254 } else if ((*end == 'g' || *end == 'G') &&
255 *(end + 1) == '\0' &&
256 (*size & (~0ULL << (64 - 30))) == 0) {
257 *size_units = 1 << 30;
258 } else if ((*end == 't' || *end == 'T') &&
259 *(end + 1) == '\0' &&
260 (*size & (~0ULL << (64 - 40))) == 0) {
261 *size_units = 1ULL << 40;
262 } else if ((*end == 'p' || *end == 'P') &&
263 *(end + 1) == '\0' &&
264 (*size & (~0ULL << (64 - 50))) == 0) {
265 *size_units = 1ULL << 50;
266 } else if ((*end == 'e' || *end == 'E') &&
267 *(end + 1) == '\0' &&
268 (*size & (~0ULL << (64 - 60))) == 0) {
269 *size_units = 1ULL << 60;
274 *size = *size * *size_units + frac * *size_units / frac_d;
279 int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
281 struct obd_ioctl_data *overlay;
284 data->ioc_len = obd_ioctl_packlen(data);
285 data->ioc_version = OBD_IOCTL_VERSION;
287 if (*pbuf != NULL && data->ioc_len > max_len) {
288 fprintf(stderr, "pbuf = %p, ioc_len = %u, max_len = %d\n",
289 *pbuf, data->ioc_len, max_len);
294 *pbuf = malloc(data->ioc_len);
299 overlay = (struct obd_ioctl_data *)*pbuf;
300 memcpy(*pbuf, data, sizeof(*data));
302 ptr = overlay->ioc_bulk;
303 if (data->ioc_inlbuf1) {
304 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
305 ptr += cfs_size_round(data->ioc_inllen1);
308 if (data->ioc_inlbuf2) {
309 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
310 ptr += cfs_size_round(data->ioc_inllen2);
313 if (data->ioc_inlbuf3) {
314 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
315 ptr += cfs_size_round(data->ioc_inllen3);
318 if (data->ioc_inlbuf4) {
319 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
320 ptr += cfs_size_round(data->ioc_inllen4);
326 int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
328 struct obd_ioctl_data *overlay;
334 overlay = (struct obd_ioctl_data *)pbuf;
336 /* Preserve the caller's buffer pointers */
337 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
338 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
339 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
340 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
342 memcpy(data, pbuf, sizeof(*data));
344 ptr = overlay->ioc_bulk;
345 if (data->ioc_inlbuf1) {
346 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
347 ptr += cfs_size_round(data->ioc_inllen1);
350 if (data->ioc_inlbuf2) {
351 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
352 ptr += cfs_size_round(data->ioc_inllen2);
355 if (data->ioc_inlbuf3) {
356 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
357 ptr += cfs_size_round(data->ioc_inllen3);
360 if (data->ioc_inlbuf4) {
361 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
362 ptr += cfs_size_round(data->ioc_inllen4);
368 /* XXX: llapi_xxx() functions return negative values upon failure */
370 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
371 int stripe_count, int stripe_pattern)
375 /* 64 KB is the largest common page size I'm aware of (on ia64), but
376 * check the local page size just in case. */
377 page_size = LOV_MIN_STRIPE_SIZE;
378 if (getpagesize() > page_size) {
379 page_size = getpagesize();
380 llapi_err_noerrno(LLAPI_MSG_WARN,
381 "warning: your page size (%u) is "
382 "larger than expected (%u)", page_size,
383 LOV_MIN_STRIPE_SIZE);
385 if (!llapi_stripe_size_is_aligned(stripe_size)) {
387 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
388 "must be an even multiple of %d bytes",
389 stripe_size, page_size);
392 if (!llapi_stripe_index_is_valid(stripe_offset)) {
394 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
398 if (!llapi_stripe_count_is_valid(stripe_count)) {
400 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
404 if (llapi_stripe_size_is_too_big(stripe_size)) {
406 llapi_error(LLAPI_MSG_ERROR, rc,
407 "warning: stripe size 4G or larger "
408 "is not currently supported and would wrap");
414 int llapi_dir_stripe_limit_check(int stripe_offset, int stripe_count,
419 if (!llapi_dir_stripe_index_is_valid(stripe_offset)) {
421 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
425 if (!llapi_dir_stripe_count_is_valid(stripe_count)) {
427 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
432 if (!llapi_dir_hash_type_is_valid(hash_type)) {
434 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad hash type %d",
442 * Trim a trailing newline from a string, if it exists.
444 int llapi_chomp_string(char *buf)
460 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
462 static int get_param_lov(const char *path, const char *param,
463 char *buf, size_t buf_size)
465 struct obd_uuid uuid;
468 rc = llapi_file_get_lov_uuid(path, &uuid);
472 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
477 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
479 static int get_param_lmv(const char *path, const char *param,
480 char *buf, size_t buf_size)
482 struct obd_uuid uuid;
485 rc = llapi_file_get_lmv_uuid(path, &uuid);
489 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
493 static int get_mds_md_size(const char *path)
495 char buf[PATH_MAX], inst[PATH_MAX];
496 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
499 rc = llapi_getname(path, inst, sizeof(inst));
503 /* Get the max ea size from llite parameters. */
504 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
505 "max_easize", buf, sizeof(buf));
511 return rc > 0 ? rc : md_size;
514 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
516 return get_param_lmv(path, "uuid", buf, bufsize);
520 * if pool is NULL, search tgtname in target_obd
521 * if pool is not NULL:
522 * if pool not found returns errno < 0
523 * if tgtname is NULL, returns 1 if pool is not empty and 0 if pool empty
524 * if tgtname is not NULL, returns 1 if OST is in pool and 0 if not
526 int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt)
528 char buffer[PATH_MAX];
534 /* You need one or the other */
535 if (poolname == NULL && fsname == NULL)
539 len = strlen(tgtname);
541 if (poolname == NULL && len == 0)
544 /* Search by poolname and fsname if is not NULL */
545 if (poolname != NULL) {
546 rc = poolpath(¶m, fsname, NULL);
548 snprintf(buffer, sizeof(buffer), "%s/%s",
549 param.gl_pathv[0], poolname);
551 } else if (fsname != NULL) {
552 rc = get_lustre_param_path(is_mdt ? "lmv" : "lov", fsname,
554 "target_obd", ¶m);
556 strncpy(buffer, param.gl_pathv[0],
562 cfs_free_param_data(¶m);
566 fd = fopen(buffer, "r");
570 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
571 if (poolname == NULL) {
573 /* Search for an tgtname in the list of targets
574 * Line format is IDX: fsname-OST/MDTxxxx_UUID STATUS */
575 ptr = strchr(buffer, ' ');
577 (strncmp(ptr + 1, tgtname, len) == 0)) {
582 /* Search for an tgtname in a pool,
583 * (or an existing non-empty pool if no tgtname) */
584 if ((tgtname == NULL) ||
585 (strncmp(buffer, tgtname, len) == 0)) {
595 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
597 return llapi_search_tgt(fsname, poolname, ostname, false);
601 * Open a Lustre file.
603 * \param name the name of the file to be opened
604 * \param flags access mode, see flags in open(2)
605 * \param mode permission of the file if it is created, see mode in open(2)
606 * \param param stripe pattern of the newly created file
608 * \retval file descriptor of opened file
609 * \retval negative errno on failure
611 int llapi_file_open_param(const char *name, int flags, mode_t mode,
612 const struct llapi_stripe_param *param)
614 char fsname[MAX_OBD_NAME + 1] = { 0 };
615 char *pool_name = param->lsp_pool;
616 struct lov_user_md *lum = NULL;
617 size_t lum_size = sizeof(*lum);
620 /* Make sure we are on a Lustre file system */
621 rc = llapi_search_fsname(name, fsname);
623 llapi_error(LLAPI_MSG_ERROR, rc,
624 "'%s' is not on a Lustre filesystem",
629 /* Check if the stripe pattern is sane. */
630 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
631 param->lsp_stripe_offset,
632 param->lsp_stripe_count,
633 param->lsp_stripe_pattern);
637 /* Make sure we have a good pool */
638 if (pool_name != NULL) {
639 /* in case user gives the full pool name <fsname>.<poolname>,
640 * strip the fsname */
641 char *ptr = strchr(pool_name, '.');
644 if (strcmp(pool_name, fsname) != 0) {
646 llapi_err_noerrno(LLAPI_MSG_ERROR,
647 "Pool '%s' is not on filesystem '%s'",
654 /* Make sure the pool exists and is non-empty */
655 rc = llapi_search_ost(fsname, pool_name, NULL);
657 char *err = rc == 0 ? "has no OSTs" : "does not exist";
659 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
660 fsname, pool_name, err);
664 lum_size = sizeof(struct lov_user_md_v3);
667 /* sanity check of target list */
668 if (param->lsp_is_specific) {
669 char ostname[MAX_OBD_NAME + 1];
673 for (i = 0; i < param->lsp_stripe_count; i++) {
674 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
675 fsname, param->lsp_osts[i]);
676 rc = llapi_search_ost(fsname, pool_name, ostname);
681 llapi_error(LLAPI_MSG_ERROR, rc,
682 "%s: cannot find OST %s in %s",
689 /* Make sure stripe offset is in OST list. */
690 if (param->lsp_osts[i] == param->lsp_stripe_offset)
694 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
695 "%s: stripe offset '%d' is not in the "
697 __func__, param->lsp_stripe_offset);
701 lum_size = lov_user_md_size(param->lsp_stripe_count,
702 LOV_USER_MAGIC_SPECIFIC);
705 lum = calloc(1, lum_size);
710 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
712 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
713 flags = O_DIRECTORY | O_RDONLY;
720 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
725 /* Initialize IOCTL striping pattern structure */
726 lum->lmm_magic = LOV_USER_MAGIC_V1;
727 lum->lmm_pattern = param->lsp_stripe_pattern;
728 lum->lmm_stripe_size = param->lsp_stripe_size;
729 lum->lmm_stripe_count = param->lsp_stripe_count;
730 lum->lmm_stripe_offset = param->lsp_stripe_offset;
731 if (pool_name != NULL) {
732 struct lov_user_md_v3 *lumv3 = (void *)lum;
734 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
735 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
737 if (param->lsp_is_specific) {
738 struct lov_user_md_v3 *lumv3 = (void *)lum;
741 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
742 if (pool_name == NULL) {
743 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
744 * OST list, therefore if pool is not specified we have
745 * to pack a null pool name for placeholder. */
746 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
749 for (i = 0; i < param->lsp_stripe_count; i++)
750 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
753 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
754 char *errmsg = "stripe already set";
757 if (errno != EEXIST && errno != EALREADY)
758 errmsg = strerror(errno);
760 llapi_err_noerrno(LLAPI_MSG_ERROR,
761 "error on ioctl %#jx for '%s' (%d): %s",
762 (uintmax_t)LL_IOC_LOV_SETSTRIPE, name, fd,
774 int llapi_file_open_pool(const char *name, int flags, int mode,
775 unsigned long long stripe_size, int stripe_offset,
776 int stripe_count, int stripe_pattern, char *pool_name)
778 const struct llapi_stripe_param param = {
779 .lsp_stripe_size = stripe_size,
780 .lsp_stripe_count = stripe_count,
781 .lsp_stripe_pattern = stripe_pattern,
782 .lsp_stripe_offset = stripe_offset,
783 .lsp_pool = pool_name
785 return llapi_file_open_param(name, flags, mode, ¶m);
788 int llapi_file_open(const char *name, int flags, int mode,
789 unsigned long long stripe_size, int stripe_offset,
790 int stripe_count, int stripe_pattern)
792 return llapi_file_open_pool(name, flags, mode, stripe_size,
793 stripe_offset, stripe_count,
794 stripe_pattern, NULL);
797 int llapi_file_create(const char *name, unsigned long long stripe_size,
798 int stripe_offset, int stripe_count, int stripe_pattern)
802 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
803 stripe_offset, stripe_count, stripe_pattern,
812 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
813 int stripe_offset, int stripe_count,
814 int stripe_pattern, char *pool_name)
818 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
819 stripe_offset, stripe_count, stripe_pattern,
828 static int verify_dir_param(const char *name,
829 const struct llapi_stripe_param *param)
831 char fsname[MAX_OBD_NAME + 1] = { 0 };
832 char *pool_name = param->lsp_pool;
835 /* Make sure we are on a Lustre file system */
836 rc = llapi_search_fsname(name, fsname);
838 llapi_error(LLAPI_MSG_ERROR, rc,
839 "'%s' is not on a Lustre filesystem",
844 /* Check if the stripe pattern is sane. */
845 rc = llapi_dir_stripe_limit_check(param->lsp_stripe_offset,
846 param->lsp_stripe_count,
847 param->lsp_stripe_pattern);
851 /* Make sure we have a good pool */
852 if (pool_name != NULL) {
853 /* in case user gives the full pool name <fsname>.<poolname>,
854 * strip the fsname */
855 char *ptr = strchr(pool_name, '.');
859 if (strcmp(pool_name, fsname) != 0) {
861 llapi_err_noerrno(LLAPI_MSG_ERROR,
862 "Pool '%s' is not on filesystem '%s'",
869 /* Make sure the pool exists and is non-empty */
870 rc = llapi_search_tgt(fsname, pool_name, NULL, true);
872 char *err = rc == 0 ? "has no OSTs" : "does not exist";
874 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
875 fsname, pool_name, err);
880 /* sanity check of target list */
881 if (param->lsp_is_specific) {
882 char mdtname[MAX_OBD_NAME + 1];
886 for (i = 0; i < param->lsp_stripe_count; i++) {
887 snprintf(mdtname, sizeof(mdtname), "%s-MDT%04x_UUID",
888 fsname, param->lsp_tgts[i]);
889 rc = llapi_search_tgt(fsname, pool_name, mdtname, true);
894 llapi_error(LLAPI_MSG_ERROR, rc,
895 "%s: cannot find MDT %s in %s",
902 /* Make sure stripe offset is in MDT list. */
903 if (param->lsp_tgts[i] == param->lsp_stripe_offset)
907 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
908 "%s: stripe offset '%d' is not in the "
910 __func__, param->lsp_stripe_offset);
918 static inline void param2lmu(struct lmv_user_md *lmu,
919 const struct llapi_stripe_param *param)
921 lmu->lum_magic = param->lsp_is_specific ? LMV_USER_MAGIC_SPECIFIC :
923 lmu->lum_stripe_count = param->lsp_stripe_count;
924 lmu->lum_stripe_offset = param->lsp_stripe_offset;
925 lmu->lum_hash_type = param->lsp_stripe_pattern;
926 if (param->lsp_pool != NULL)
927 strncpy(lmu->lum_pool_name, param->lsp_pool, LOV_MAXPOOLNAME);
928 if (param->lsp_is_specific) {
931 for (i = 0; i < param->lsp_stripe_count; i++)
932 lmu->lum_objects[i].lum_mds = param->lsp_tgts[i];
936 int llapi_dir_set_default_lmv(const char *name,
937 const struct llapi_stripe_param *param)
939 struct lmv_user_md lmu = { 0 };
943 rc = verify_dir_param(name, param);
947 /* TODO: default lmv doesn't support specific targets yet */
948 if (param->lsp_is_specific)
951 param2lmu(&lmu, param);
953 fd = open(name, O_DIRECTORY | O_RDONLY);
956 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
960 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lmu);
962 char *errmsg = "stripe already set";
964 if (errno != EEXIST && errno != EALREADY)
965 errmsg = strerror(errno);
967 llapi_err_noerrno(LLAPI_MSG_ERROR,
968 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
975 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
976 int stripe_count, int stripe_pattern,
977 const char *pool_name)
979 const struct llapi_stripe_param param = {
980 .lsp_stripe_count = stripe_count,
981 .lsp_stripe_offset = stripe_offset,
982 .lsp_stripe_pattern = stripe_pattern,
983 .lsp_pool = (char *)pool_name
986 return llapi_dir_set_default_lmv(name, ¶m);
990 * Create a Lustre directory.
992 * \param name the name of the directory to be created
993 * \param mode permission of the file if it is created, see mode in open(2)
994 * \param param stripe pattern of the newly created directory
996 * \retval 0 on success
997 * \retval negative errno on failure
999 int llapi_dir_create_param(const char *name, mode_t mode,
1000 const struct llapi_stripe_param *param)
1002 struct lmv_user_md *lmu = NULL;
1003 size_t lmu_size = sizeof(*lmu);
1004 struct obd_ioctl_data data = { 0 };
1007 char *dirpath = NULL;
1008 char *namepath = NULL;
1013 rc = verify_dir_param(name, param);
1017 if (param->lsp_is_specific)
1018 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1019 LMV_USER_MAGIC_SPECIFIC);
1021 lmu = calloc(1, lmu_size);
1025 dirpath = strdup(name);
1031 namepath = strdup(name);
1038 param2lmu(lmu, param);
1040 filename = basename(namepath);
1041 dir = dirname(dirpath);
1043 data.ioc_inlbuf1 = (char *)filename;
1044 data.ioc_inllen1 = strlen(filename) + 1;
1045 data.ioc_inlbuf2 = (char *)lmu;
1046 data.ioc_inllen2 = lmu_size;
1047 data.ioc_type = mode;
1048 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
1050 llapi_error(LLAPI_MSG_ERROR, rc,
1051 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1056 fd = open(dir, O_DIRECTORY | O_RDONLY);
1059 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1063 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1064 char *errmsg = "stripe already set";
1066 if (errno != EEXIST && errno != EALREADY)
1067 errmsg = strerror(errno);
1069 llapi_err_noerrno(LLAPI_MSG_ERROR,
1070 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
1082 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1083 int stripe_count, int stripe_pattern,
1084 const char *pool_name)
1086 const struct llapi_stripe_param param = {
1087 .lsp_stripe_count = stripe_count,
1088 .lsp_stripe_offset = stripe_offset,
1089 .lsp_stripe_pattern = stripe_pattern,
1090 .lsp_pool = (char *)pool_name
1093 return llapi_dir_create_param(name, mode, ¶m);
1096 int llapi_direntry_remove(char *dname)
1098 char *dirpath = NULL;
1099 char *namepath = NULL;
1105 dirpath = strdup(dname);
1106 namepath = strdup(dname);
1107 if (!dirpath || !namepath)
1110 filename = basename(namepath);
1112 dir = dirname(dirpath);
1114 fd = open(dir, O_DIRECTORY | O_RDONLY);
1117 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1122 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1123 char *errmsg = strerror(errno);
1124 llapi_err_noerrno(LLAPI_MSG_ERROR,
1125 "error on ioctl %#jx for '%s' (%d): %s",
1126 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1138 * Find the fsname, the full path, and/or an open fd.
1139 * Either the fsname or path must not be NULL
1141 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1144 char buf[PATH_MAX], mntdir[PATH_MAX];
1145 char *ptr, *ptr_end;
1147 int idx = 0, len = 0, mntlen, fd;
1150 /* get the mount point */
1151 fp = setmntent(PROC_MOUNTS, "r");
1154 llapi_error(LLAPI_MSG_ERROR, rc,
1155 "cannot retrieve filesystem mount point");
1159 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1162 if (!llapi_is_lustre_mnt(&mnt))
1165 if ((want & WANT_INDEX) && (idx++ != index))
1168 mntlen = strlen(mnt.mnt_dir);
1169 ptr = strchr(mnt.mnt_fsname, '/');
1170 while (ptr && *ptr == '/')
1172 /* thanks to the call to llapi_is_lustre_mnt() above,
1173 * we are sure that mnt.mnt_fsname contains ":/",
1174 * so ptr should never be NULL */
1178 while (*ptr_end != '/' && *ptr_end != '\0')
1181 /* Check the fsname for a match, if given */
1182 if (!(want & WANT_FSNAME) && fsname != NULL &&
1183 (strlen(fsname) > 0) &&
1184 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1187 /* If the path isn't set return the first one we find */
1188 if (path == NULL || strlen(path) == 0) {
1189 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1190 mntdir[strlen(mnt.mnt_dir)] = '\0';
1191 if ((want & WANT_FSNAME) && fsname != NULL) {
1192 strncpy(fsname, ptr, ptr_end - ptr);
1193 fsname[ptr_end - ptr] = '\0';
1197 /* Otherwise find the longest matching path */
1198 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1199 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1200 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1201 mntdir[strlen(mnt.mnt_dir)] = '\0';
1203 if ((want & WANT_FSNAME) && fsname != NULL) {
1204 strncpy(fsname, ptr, ptr_end - ptr);
1205 fsname[ptr_end - ptr] = '\0';
1214 if ((want & WANT_PATH) && path != NULL) {
1215 strncpy(path, mntdir, strlen(mntdir));
1216 path[strlen(mntdir)] = '\0';
1218 if (want & WANT_FD) {
1219 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1222 llapi_error(LLAPI_MSG_ERROR, rc,
1223 "cannot open '%s': %s", mntdir,
1230 } else if (want & WANT_ERROR)
1231 llapi_err_noerrno(LLAPI_MSG_ERROR,
1232 "'%s' not on a mounted Lustre filesystem",
1233 (want & WANT_PATH) ? fsname : path);
1238 * search lustre mounts
1240 * Calling this function will return to the user the mount point, mntdir, and
1241 * the file system name, fsname, if the user passed a buffer to this routine.
1243 * The user inputs are pathname and index. If the pathname is supplied then
1244 * the value of the index will be ignored. The pathname will return data if
1245 * the pathname is located on a lustre mount. Index is used to pick which
1246 * mount point you want in the case of multiple mounted lustre file systems.
1247 * See function lfs_osts in lfs.c for an example of the index use.
1249 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1252 int want = WANT_PATH, idx = -1;
1254 if (!pathname || pathname[0] == '\0') {
1258 strcpy(mntdir, pathname);
1261 want |= WANT_FSNAME;
1262 return get_root_path(want, fsname, NULL, mntdir, idx);
1265 /* Given a path, find the corresponding Lustre fsname */
1266 int llapi_search_fsname(const char *pathname, char *fsname)
1271 path = realpath(pathname, NULL);
1273 char buf[PATH_MAX], *ptr;
1276 if (pathname[0] != '/') {
1277 /* Need an absolute path, but realpath() only works for
1278 * pathnames that actually exist. We go through the
1279 * extra hurdle of dirname(getcwd() + pathname) in
1280 * case the relative pathname contains ".." in it. */
1281 if (getcwd(buf, sizeof(buf) - 2) == NULL) {
1283 llapi_error(LLAPI_MSG_ERROR, rc,
1284 "cannot get current working directory");
1287 rc = strlcat(buf, "/", sizeof(buf));
1288 if (rc >= sizeof(buf)) {
1290 llapi_error(LLAPI_MSG_ERROR, rc,
1291 "invalid parent path '%s'",
1296 rc = strlcat(buf, pathname, sizeof(buf));
1297 if (rc >= sizeof(buf)) {
1299 llapi_error(LLAPI_MSG_ERROR, rc,
1300 "invalid path '%s'", pathname);
1303 path = realpath(buf, NULL);
1305 ptr = strrchr(buf, '/');
1307 llapi_error(LLAPI_MSG_ERROR |
1308 LLAPI_MSG_NO_ERRNO, 0,
1309 "cannot resolve path '%s'",
1314 path = realpath(buf, NULL);
1317 llapi_error(LLAPI_MSG_ERROR, rc,
1318 "cannot resolve path '%s'",
1324 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1329 int llapi_search_rootpath(char *pathname, const char *fsname)
1331 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1334 int llapi_getname(const char *path, char *buf, size_t size)
1336 struct obd_uuid uuid_buf;
1337 char *uuid = uuid_buf.uuid;
1340 memset(&uuid_buf, 0, sizeof(uuid_buf));
1341 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1345 /* We want to turn lustre-clilov-ffff88002738bc00 into
1346 * lustre-ffff88002738bc00. */
1348 nr = snprintf(buf, size, "%.*s-%s",
1349 (int) (strlen(uuid) - 24), uuid,
1350 uuid + strlen(uuid) - 16);
1359 * Get the list of pool members.
1360 * \param poolname string of format \<fsname\>.\<poolname\>
1361 * \param members caller-allocated array of char*
1362 * \param list_size size of the members array
1363 * \param buffer caller-allocated buffer for storing OST names
1364 * \param buffer_size size of the buffer
1366 * \return number of members retrieved for this pool
1367 * \retval -error failure
1369 int llapi_get_poolmembers(const char *poolname, char **members,
1370 int list_size, char *buffer, int buffer_size)
1372 char fsname[PATH_MAX];
1381 /* name is FSNAME.POOLNAME */
1382 if (strlen(poolname) >= sizeof(fsname))
1384 strlcpy(fsname, poolname, sizeof(fsname));
1385 pool = strchr(fsname, '.');
1392 rc = poolpath(&pathname, fsname, NULL);
1394 llapi_error(LLAPI_MSG_ERROR, rc,
1395 "Lustre filesystem '%s' not found",
1400 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1401 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1402 cfs_free_param_data(&pathname);
1403 if (rc >= sizeof(buf))
1405 fd = fopen(buf, "r");
1408 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1413 while (fgets(buf, sizeof(buf), fd) != NULL) {
1414 if (nb_entries >= list_size) {
1418 buf[sizeof(buf) - 1] = '\0';
1420 tmp = strchr(buf, '\n');
1423 if (used + strlen(buf) + 1 > buffer_size) {
1428 strcpy(buffer + used, buf);
1429 members[nb_entries] = buffer + used;
1430 used += strlen(buf) + 1;
1440 * Get the list of pools in a filesystem.
1441 * \param name filesystem name or path
1442 * \param poollist caller-allocated array of char*
1443 * \param list_size size of the poollist array
1444 * \param buffer caller-allocated buffer for storing pool names
1445 * \param buffer_size size of the buffer
1447 * \return number of pools retrieved for this filesystem
1448 * \retval -error failure
1450 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1451 char *buffer, int buffer_size)
1453 char rname[PATH_MAX];
1458 struct dirent *pool;
1460 unsigned int nb_entries = 0;
1461 unsigned int used = 0;
1464 /* initialize output array */
1465 for (i = 0; i < list_size; i++)
1468 /* is name a pathname ? */
1469 ptr = strchr(name, '/');
1471 /* only absolute pathname is supported */
1475 if (!realpath(name, rname)) {
1477 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1482 fsname = strdup(rname);
1486 rc = poolpath(&pathname, NULL, rname);
1488 /* name is FSNAME */
1489 fsname = strdup(name);
1492 rc = poolpath(&pathname, fsname, NULL);
1495 llapi_error(LLAPI_MSG_ERROR, rc,
1496 "Lustre filesystem '%s' not found", name);
1500 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1501 dir = opendir(pathname.gl_pathv[0]);
1504 llapi_error(LLAPI_MSG_ERROR, rc,
1505 "Could not open pool list for '%s'",
1512 pool = readdir(dir);
1518 /* ignore . and .. */
1519 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1522 /* check output bounds */
1523 if (nb_entries >= list_size) {
1528 /* +2 for '.' and final '\0' */
1529 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1535 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1536 poollist[nb_entries] = buffer + used;
1537 used += strlen(pool->d_name) + strlen(fsname) + 2;
1543 llapi_error(LLAPI_MSG_ERROR, rc,
1544 "Error reading pool list for '%s'", name);
1547 cfs_free_param_data(&pathname);
1550 return rc != 0 ? rc : nb_entries;
1553 /* wrapper for lfs.c and obd.c */
1554 int llapi_poollist(const char *name)
1556 /* list of pool names (assume that pool count is smaller
1558 char **list, *buffer = NULL, *fsname = (char *)name;
1559 char *poolname = NULL, *tmp = NULL, data[16];
1560 enum param_filter type = FILTER_BY_PATH;
1561 int obdcount, bufsize, rc, nb, i;
1566 if (name[0] != '/') {
1567 fsname = strdup(name);
1571 poolname = strchr(fsname, '.');
1574 type = FILTER_BY_FS_NAME;
1577 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1578 data, sizeof(data));
1581 obdcount = atoi(data);
1583 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1584 * and also an array to store the pointers for all that
1585 * allocated space. */
1587 bufsize = sizeof(struct obd_uuid) * obdcount;
1588 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1589 if (buffer == NULL) {
1593 list = (char **) (buffer + bufsize);
1596 /* name is a path or fsname */
1597 nb = llapi_get_poollist(name, list, obdcount,
1600 /* name is a pool name (<fsname>.<poolname>) */
1601 nb = llapi_get_poolmembers(name, list, obdcount,
1605 if (nb == -EOVERFLOW) {
1608 goto retry_get_pools;
1611 for (i = 0; i < nb; i++)
1612 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1613 rc = (nb < 0 ? nb : 0);
1617 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1622 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1623 void *data, struct dirent64 *de);
1625 #define OBD_NOT_FOUND (-1)
1627 static int common_param_init(struct find_param *param, char *path)
1629 int lum_size = get_mds_md_size(path);
1631 if (lum_size < PATH_MAX + 1)
1632 lum_size = PATH_MAX + 1;
1634 param->fp_lum_size = lum_size;
1635 param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
1636 if (param->fp_lmd == NULL) {
1637 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1638 "error: allocation of %zu bytes for ioctl",
1639 sizeof(lstat_t) + param->fp_lum_size);
1643 param->fp_lmv_stripe_count = 256;
1644 param->fp_lmv_md = calloc(1,
1645 lmv_user_md_size(param->fp_lmv_stripe_count,
1647 if (param->fp_lmv_md == NULL) {
1648 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1649 "error: allocation of %d bytes for ioctl",
1650 lmv_user_md_size(param->fp_lmv_stripe_count,
1655 param->fp_got_uuids = 0;
1656 param->fp_obd_indexes = NULL;
1657 param->fp_obd_index = OBD_NOT_FOUND;
1658 if (!param->fp_migrate)
1659 param->fp_mdt_index = OBD_NOT_FOUND;
1663 static void find_param_fini(struct find_param *param)
1665 if (param->fp_obd_indexes)
1666 free(param->fp_obd_indexes);
1669 free(param->fp_lmd);
1671 if (param->fp_lmv_md)
1672 free(param->fp_lmv_md);
1675 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1676 struct dirent64 *de)
1678 struct find_param *param = data;
1684 /* set errno upon failure */
1685 static DIR *opendir_parent(const char *path)
1691 path_copy = strdup(path);
1692 if (path_copy == NULL)
1695 parent_path = dirname(path_copy);
1696 parent = opendir(parent_path);
1702 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1707 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1708 if (param->fp_get_default_lmv)
1709 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1711 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1713 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1714 if (errno == E2BIG && ret != 0) {
1718 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1719 if (stripe_count <= param->fp_lmv_stripe_count)
1722 free(param->fp_lmv_md);
1723 param->fp_lmv_stripe_count = stripe_count;
1724 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1725 param->fp_lmv_md = malloc(lmv_size);
1726 if (param->fp_lmv_md == NULL) {
1727 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1728 "error: allocation of %d bytes for ioctl",
1729 lmv_user_md_size(param->fp_lmv_stripe_count,
1738 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1739 struct lov_user_mds_data *lmd, int lumlen)
1741 lstat_t *st = &lmd->lmd_st;
1744 if (parent == NULL && dir == NULL)
1748 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1749 } else if (parent) {
1750 char *fname = strrchr(path, '/');
1752 /* To avoid opening, locking, and closing each file on the
1753 * client if that is not needed. The GETFILEINFO ioctl can
1754 * be done on the patent dir with a single open for all
1755 * files in that directory, and it also doesn't pollute the
1756 * client dcache with millions of dentries when traversing
1757 * a large filesystem. */
1758 fname = (fname == NULL ? path : fname + 1);
1759 /* retrieve needed file info */
1760 strlcpy((char *)lmd, fname, lumlen);
1761 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1765 if (errno == ENOTTY) {
1766 /* ioctl is not supported, it is not a lustre fs.
1767 * Do the regular lstat(2) instead. */
1768 ret = lstat_f(path, st);
1771 llapi_error(LLAPI_MSG_ERROR, ret,
1772 "error: %s: lstat failed for %s",
1775 } else if (errno == ENOENT) {
1777 llapi_error(LLAPI_MSG_WARN, ret,
1778 "warning: %s: %s does not exist",
1780 } else if (errno != EISDIR) {
1782 llapi_error(LLAPI_MSG_ERROR, ret,
1783 "%s ioctl failed for %s.",
1784 dir ? "LL_IOC_MDC_GETINFO" :
1785 "IOC_MDC_GETFILEINFO", path);
1788 llapi_error(LLAPI_MSG_ERROR, ret,
1789 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1796 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1797 semantic_func_t sem_init,
1798 semantic_func_t sem_fini, void *data,
1799 struct dirent64 *de)
1801 struct find_param *param = (struct find_param *)data;
1802 struct dirent64 *dent;
1810 if (!d && errno != ENOTDIR) {
1812 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1815 } else if (!d && !parent) {
1816 /* ENOTDIR. Open the parent dir. */
1817 p = opendir_parent(path);
1824 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1830 while ((dent = readdir64(d)) != NULL) {
1833 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1836 /* Don't traverse .lustre directory */
1837 if (!(strcmp(dent->d_name, dot_lustre_name)))
1841 if ((len + dent->d_reclen + 2) > size) {
1842 llapi_err_noerrno(LLAPI_MSG_ERROR,
1843 "error: %s: string buffer is too small",
1848 strcat(path, dent->d_name);
1850 if (dent->d_type == DT_UNKNOWN) {
1851 lstat_t *st = ¶m->fp_lmd->lmd_st;
1853 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1854 param->fp_lum_size);
1856 dent->d_type = IFTODT(st->st_mode);
1863 switch (dent->d_type) {
1865 llapi_err_noerrno(LLAPI_MSG_ERROR,
1866 "error: %s: '%s' is UNKNOWN type %d",
1867 __func__, dent->d_name, dent->d_type);
1870 rc = llapi_semantic_traverse(path, size, d, sem_init,
1871 sem_fini, data, dent);
1872 if (rc != 0 && ret == 0)
1878 rc = sem_init(path, d, NULL, data, dent);
1879 if (rc < 0 && ret == 0)
1882 if (sem_fini && rc == 0)
1883 sem_fini(path, d, NULL, data, dent);
1891 sem_fini(path, parent, &d, data, de);
1900 static int param_callback(char *path, semantic_func_t sem_init,
1901 semantic_func_t sem_fini, struct find_param *param)
1903 int ret, len = strlen(path);
1906 if (len > PATH_MAX) {
1908 llapi_error(LLAPI_MSG_ERROR, ret,
1909 "Path name '%s' is too long", path);
1913 buf = (char *)malloc(PATH_MAX + 1);
1917 strlcpy(buf, path, PATH_MAX + 1);
1918 ret = common_param_init(param, buf);
1922 param->fp_depth = 0;
1924 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1925 sem_fini, param, NULL);
1927 find_param_fini(param);
1929 return ret < 0 ? ret : 0;
1932 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1934 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1937 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1942 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1944 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1947 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1952 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1956 fd = open(path, O_RDONLY | O_NONBLOCK);
1959 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1963 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1969 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1973 fd = open(path, O_RDONLY | O_NONBLOCK);
1976 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1980 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1992 * If uuidp is NULL, return the number of available obd uuids.
1993 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1994 * there are more OSTs than allocated to uuidp, then an error is returned with
1995 * the ost_count set to number of available obd uuids.
1997 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1998 int *ost_count, enum tgt_type type)
2000 char buf[PATH_MAX], format[32];
2001 int rc = 0, index = 0;
2002 struct obd_uuid name;
2006 /* Get the lov name */
2007 if (type == LOV_TYPE)
2008 rc = llapi_file_fget_lov_uuid(fd, &name);
2010 rc = llapi_file_fget_lmv_uuid(fd, &name);
2014 /* Now get the ost uuids */
2015 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2016 FILTER_BY_EXACT, "target_obd", ¶m);
2020 fp = fopen(param.gl_pathv[0], "r");
2023 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2028 snprintf(format, sizeof(format),
2029 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2030 while (fgets(buf, sizeof(buf), fp) != NULL) {
2031 if (uuidp && (index < *ost_count)) {
2032 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2040 if (uuidp && (index > *ost_count))
2045 cfs_free_param_data(¶m);
2049 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2051 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2054 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2059 root = open(mnt, O_RDONLY | O_DIRECTORY);
2062 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2067 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2075 /* Check if user specified value matches a real uuid. Ignore _UUID,
2076 * -osc-4ba41334, other trailing gunk in comparison.
2077 * @param real_uuid ends in "_UUID"
2078 * @param search_uuid may or may not end in "_UUID"
2080 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2082 int cmplen = strlen(real_uuid);
2083 int searchlen = strlen(search_uuid);
2085 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2087 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2090 /* The UUIDs may legitimately be different lengths, if
2091 * the system was upgraded from an older version. */
2092 if (cmplen != searchlen)
2095 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2098 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2099 * returned in param->fp_obd_index */
2100 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2102 struct obd_uuid obd_uuid;
2109 if (param->fp_got_uuids)
2112 /* Get the lov/lmv name */
2113 if (param->fp_get_lmv)
2114 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2116 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2118 if (rc != -ENOTTY) {
2119 llapi_error(LLAPI_MSG_ERROR, rc,
2120 "error: can't get %s name: %s",
2121 param->fp_get_lmv ? "lmv" : "lov",
2129 param->fp_got_uuids = 1;
2131 /* Now get the ost uuids */
2132 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2133 obd_uuid.uuid, FILTER_BY_EXACT,
2134 "target_obd", ¶m_data);
2138 fp = fopen(param_data.gl_pathv[0], "r");
2141 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2142 param_data.gl_pathv[0]);
2146 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2147 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2148 param->fp_get_lmv ? "MDTS" : "OBDS");
2150 snprintf(format, sizeof(format),
2151 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2152 while (fgets(buf, sizeof(buf), fp) != NULL) {
2155 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2158 if (param->fp_obd_uuid) {
2159 if (llapi_uuid_match(obd_uuid.uuid,
2160 param->fp_obd_uuid->uuid)) {
2161 param->fp_obd_index = index;
2164 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2165 /* Print everything */
2166 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2169 param->fp_obds_printed = 1;
2173 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2174 llapi_err_noerrno(LLAPI_MSG_ERROR,
2175 "error: %s: unknown obduuid: %s",
2176 __func__, param->fp_obd_uuid->uuid);
2180 cfs_free_param_data(¶m_data);
2184 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2185 * obd index for all these obduuids will be returned in
2186 * param->fp_obd_indexes */
2187 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2188 int num_obds, int **obdindexes, int *obdindex,
2191 int ret, obdcount, obd_valid = 0, obdnum;
2193 struct obd_uuid *uuids = NULL;
2197 if (type == LOV_TYPE)
2198 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2200 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2204 obdcount = atoi(buf);
2205 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2210 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2212 if (ret == -EOVERFLOW) {
2213 struct obd_uuid *uuids_temp;
2215 uuids_temp = realloc(uuids, obdcount *
2216 sizeof(struct obd_uuid));
2217 if (uuids_temp != NULL) {
2219 goto retry_get_uuids;
2224 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2228 indexes = malloc(num_obds * sizeof(*obdindex));
2229 if (indexes == NULL) {
2234 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2237 /* The user may have specified a simple index */
2238 i = strtol(obduuids[obdnum].uuid, &end, 0);
2239 if (end && *end == '\0' && i < obdcount) {
2240 indexes[obdnum] = i;
2243 for (i = 0; i < obdcount; i++) {
2244 if (llapi_uuid_match(uuids[i].uuid,
2245 obduuids[obdnum].uuid)) {
2246 indexes[obdnum] = i;
2252 if (i >= obdcount) {
2253 indexes[obdnum] = OBD_NOT_FOUND;
2254 llapi_err_noerrno(LLAPI_MSG_ERROR,
2255 "error: %s: unknown obduuid: %s",
2256 __func__, obduuids[obdnum].uuid);
2262 *obdindex = OBD_NOT_FOUND;
2264 *obdindex = obd_valid;
2266 *obdindexes = indexes;
2274 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2278 if (param->fp_mdt_uuid) {
2279 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2281 ¶m->fp_mdt_indexes,
2282 ¶m->fp_mdt_index, LMV_TYPE);
2287 if (param->fp_obd_uuid) {
2288 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2290 ¶m->fp_obd_indexes,
2291 ¶m->fp_obd_index, LOV_TYPE);
2296 param->fp_got_uuids = 1;
2301 int llapi_ostlist(char *path, struct find_param *param)
2306 fd = open(path, O_RDONLY | O_DIRECTORY);
2310 ret = setup_obd_uuid(fd, path, param);
2317 * Tries to determine the default stripe attributes for a given filesystem. The
2318 * filesystem to check should be specified by fsname, or will be determined
2321 static int sattr_get_defaults(const char *const fsname,
2322 unsigned int *scount,
2323 unsigned int *ssize,
2324 unsigned int *soffset)
2330 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2331 "stripecount", val, sizeof(val));
2334 *scount = atoi(val);
2338 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2339 "stripesize", val, sizeof(val));
2346 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2347 "stripeoffset", val, sizeof(val));
2350 *soffset = atoi(val);
2357 * Tries to gather the default stripe attributes for a given filesystem. If
2358 * the attributes can be determined, they are cached for easy retreival the
2359 * next time they are needed. Only a single filesystem's attributes are
2362 int sattr_cache_get_defaults(const char *const fsname,
2363 const char *const pathname, unsigned int *scount,
2364 unsigned int *ssize, unsigned int *soffset)
2367 char fsname[PATH_MAX + 1];
2368 unsigned int stripecount;
2369 unsigned int stripesize;
2370 unsigned int stripeoffset;
2376 char fsname_buf[PATH_MAX + 1];
2377 unsigned int tmp[3];
2379 if (fsname == NULL) {
2380 rc = llapi_search_fsname(pathname, fsname_buf);
2384 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2387 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2389 * Ensure all 3 sattrs (count, size, and offset) are
2390 * successfully retrieved and stored in tmp before writing to
2393 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2397 cache.stripecount = tmp[0];
2398 cache.stripesize = tmp[1];
2399 cache.stripeoffset = tmp[2];
2400 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2404 *scount = cache.stripecount;
2406 *ssize = cache.stripesize;
2408 *soffset = cache.stripeoffset;
2413 static char *layout2name(__u32 layout_pattern)
2415 if (layout_pattern == LOV_PATTERN_MDT)
2417 else if (layout_pattern == LOV_PATTERN_RAID0)
2419 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2425 enum lov_dump_flags {
2426 LDF_IS_DIR = 0x0001,
2427 LDF_IS_RAW = 0x0002,
2428 LDF_INDENT = 0x0004,
2429 LDF_SKIP_OBJS = 0x0008,
2433 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2434 struct lov_user_ost_data_v1 *objects,
2435 int verbose, int depth, char *pool_name,
2436 enum lov_dump_flags flags)
2438 bool is_dir = flags & LDF_IS_DIR;
2439 bool is_raw = flags & LDF_IS_RAW;
2440 bool indent = flags & LDF_INDENT;
2441 bool yaml = flags & LDF_YAML;
2442 bool skip_objs = flags & LDF_SKIP_OBJS;
2443 char *prefix = is_dir ? "" : "lmm_";
2444 char *separator = "";
2445 char *space = indent ? " " : "";
2448 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2449 lmm_oi_set_seq(&lum->lmm_oi, 0);
2450 if (!indent && (verbose & VERBOSE_DETAIL))
2451 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2454 if (!yaml && !indent && depth && path &&
2455 ((verbose != VERBOSE_OBJID) || !is_dir))
2456 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2458 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2459 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2460 space, prefix, lum->lmm_magic);
2461 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2463 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2464 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2466 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2468 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2473 if (verbose & ~VERBOSE_DFID)
2474 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2476 /* This needs a bit of hand-holding since old 1.x lmm_oi
2477 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2478 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2479 * a real FID. Ideally the 2.x code would have stored this
2480 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2481 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2482 * worked properly (especially since IGIF FIDs use mds_inum as
2483 * the FID SEQ), but unfortunately that didn't happen.
2485 * Print it to look like an IGIF FID, even though the fields
2486 * are reversed on disk, so that it makes sense to userspace.
2488 * Don't use ostid_id() and ostid_seq(), since they assume the
2489 * oi_fid fields are in the right order. This is why there are
2490 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2492 * For newer layout types hopefully this will be a real FID. */
2493 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2494 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2495 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2496 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2497 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2499 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2502 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2506 if (verbose & VERBOSE_COUNT) {
2507 if (verbose & ~VERBOSE_COUNT)
2508 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2511 if (!is_raw && lum->lmm_stripe_count == 0 &&
2512 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2513 unsigned int scount;
2514 rc = sattr_cache_get_defaults(NULL, path,
2518 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2521 llapi_error(LLAPI_MSG_ERROR, rc,
2522 "Cannot determine default"
2525 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2526 lum->lmm_stripe_count ==
2527 (typeof(lum->lmm_stripe_count))(-1)
2528 ? -1 : lum->lmm_stripe_count);
2531 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2532 (__s16)lum->lmm_stripe_count);
2534 if (!yaml && is_dir)
2540 if (verbose & VERBOSE_SIZE) {
2541 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2542 if (verbose & ~VERBOSE_SIZE)
2543 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2545 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2547 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2550 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2552 llapi_error(LLAPI_MSG_ERROR, rc,
2553 "Cannot determine default"
2556 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2557 lum->lmm_stripe_size);
2559 if (!yaml && is_dir)
2565 if ((verbose & VERBOSE_LAYOUT)) {
2566 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2567 if (verbose & ~VERBOSE_LAYOUT)
2568 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2570 if (lov_pattern_supported(lum->lmm_pattern))
2571 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2572 layout2name(lum->lmm_pattern));
2574 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2575 separator = is_dir ? " " : "\n";
2578 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2579 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2580 if (verbose & ~VERBOSE_GENERATION)
2581 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2583 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2584 (int)lum->lmm_layout_gen);
2588 if (verbose & VERBOSE_OFFSET) {
2589 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2590 if (verbose & ~VERBOSE_OFFSET)
2591 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2593 if (is_dir || skip_objs)
2594 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2595 lum->lmm_stripe_offset ==
2596 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2597 lum->lmm_stripe_offset);
2599 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2600 objects[0].l_ost_idx);
2601 if (!yaml && is_dir)
2607 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2608 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2609 if (verbose & ~VERBOSE_POOL)
2610 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2612 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2613 if (!yaml && is_dir)
2619 if (strlen(separator) != 0)
2620 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2623 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2624 struct lov_user_ost_data_v1 *objects,
2625 char *path, int obdindex, int depth,
2626 int header, enum lov_dump_flags flags)
2628 bool is_dir = flags & LDF_IS_DIR;
2629 bool indent = flags & LDF_INDENT;
2630 bool skip_objs = flags & LDF_SKIP_OBJS;
2631 bool yaml = flags & LDF_YAML;
2632 bool obdstripe = obdindex == OBD_NOT_FOUND;
2635 if (!obdstripe && !skip_objs) {
2636 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2637 if (obdindex == objects[i].l_ost_idx) {
2647 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2650 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2651 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2652 char *space = " - ";
2655 llapi_printf(LLAPI_MSG_NORMAL,
2656 "%6slmm_objects:\n", " ");
2658 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2660 llapi_printf(LLAPI_MSG_NORMAL,
2661 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2663 for (i = 0; i < lum->lmm_stripe_count; i++) {
2664 int idx = objects[i].l_ost_idx;
2665 long long oid = ostid_id(&objects[i].l_ost_oi);
2666 long long gr = ostid_seq(&objects[i].l_ost_oi);
2668 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2672 struct lu_fid fid = { 0 };
2674 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2675 llapi_printf(LLAPI_MSG_NORMAL,
2676 "%sl_ost_idx: %d\n", space, idx);
2677 llapi_printf(LLAPI_MSG_NORMAL,
2678 "%8sl_fid: "DFID_NOBRACE"\n",
2680 } else if (indent) {
2681 struct lu_fid fid = { 0 };
2683 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2684 llapi_printf(LLAPI_MSG_NORMAL,
2685 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2686 space, i, idx, PFID(&fid));
2689 sprintf(fmt, "%s%s%s\n",
2690 "\t%6u\t%14llu\t%#13llx\t",
2691 (fid_seq_is_rsvd(gr) ||
2692 fid_seq_is_mdt0(gr)) ?
2693 "%14llu" : "%#14llx", "%s");
2694 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2696 obdindex == idx ? " *" : "");
2700 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2703 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2704 char *path, int obdindex, int depth, int verbose,
2705 enum lov_dump_flags flags)
2707 struct lmv_user_mds_data *objects = lum->lum_objects;
2708 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2709 char *separator = "";
2710 bool yaml = flags & LDF_YAML;
2711 bool obdstripe = false;
2714 if (obdindex != OBD_NOT_FOUND) {
2715 if (lum->lum_stripe_count == 0) {
2716 if (obdindex == lum->lum_stripe_offset)
2719 for (i = 0; i < lum->lum_stripe_count; i++) {
2720 if (obdindex == objects[i].lum_mds) {
2721 llapi_printf(LLAPI_MSG_NORMAL,
2736 /* show all information default */
2738 if (lum->lum_magic == LMV_USER_MAGIC)
2739 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2740 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2742 verbose = VERBOSE_OBJID;
2745 if (depth && path && ((verbose != VERBOSE_OBJID)))
2746 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2748 if (verbose & VERBOSE_COUNT) {
2749 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2750 if (verbose & ~VERBOSE_COUNT)
2751 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2752 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2753 (int)lum->lum_stripe_count);
2754 if ((verbose & VERBOSE_OFFSET) && !yaml)
2760 if (verbose & VERBOSE_OFFSET) {
2761 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2762 if (verbose & ~VERBOSE_OFFSET)
2763 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2764 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2765 (int)lum->lum_stripe_offset);
2766 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2772 if (verbose & VERBOSE_HASH_TYPE) {
2773 unsigned int type = lum->lum_hash_type;
2775 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2776 if (verbose & ~VERBOSE_HASH_TYPE)
2777 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2778 if (type < LMV_HASH_TYPE_MAX)
2779 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2780 mdt_hash_name[type]);
2782 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2787 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2788 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2789 if (lum->lum_stripe_count > 0)
2790 llapi_printf(LLAPI_MSG_NORMAL,
2791 "mdtidx\t\t FID[seq:oid:ver]\n");
2792 for (i = 0; i < lum->lum_stripe_count; i++) {
2793 int idx = objects[i].lum_mds;
2794 struct lu_fid *fid = &objects[i].lum_fid;
2795 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2796 llapi_printf(LLAPI_MSG_NORMAL,
2797 "%6u\t\t "DFID"\t\t%s\n",
2799 obdindex == idx ? " *" : "");
2804 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2805 pool_name[0] != '\0') {
2806 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2807 if (verbose & ~VERBOSE_POOL)
2808 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2810 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2814 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2815 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2818 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2819 enum lov_dump_flags flags)
2821 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2822 int depth = param->fp_max_depth;
2823 int verbose = param->fp_verbose;
2824 bool yaml = flags & LDF_YAML;
2826 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2827 !(flags & LDF_IS_DIR)) && !yaml)
2828 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2830 if (verbose & VERBOSE_DETAIL) {
2831 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2832 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2833 " ", comp_v1->lcm_magic);
2834 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2835 " ", comp_v1->lcm_size);
2836 if (flags & LDF_IS_DIR)
2837 llapi_printf(LLAPI_MSG_NORMAL,
2838 "%2slcm_flags: %s\n", " ",
2839 comp_v1->lcm_mirror_count > 0 ?
2842 llapi_printf(LLAPI_MSG_NORMAL,
2843 "%2slcm_flags: %s\n",
2844 " ", lcm_flags_string(comp_v1->lcm_flags));
2847 if (verbose & VERBOSE_GENERATION) {
2848 if (verbose & ~VERBOSE_GENERATION)
2849 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2851 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2854 if (verbose & VERBOSE_MIRROR_COUNT) {
2855 if (verbose & ~VERBOSE_MIRROR_COUNT)
2856 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2858 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2859 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2860 comp_v1->lcm_mirror_count + 1 : 1);
2863 if (verbose & VERBOSE_COMP_COUNT) {
2864 if (verbose & ~VERBOSE_COMP_COUNT)
2865 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2867 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2868 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2869 comp_v1->lcm_entry_count : 0);
2872 if (verbose & VERBOSE_DETAIL && !yaml)
2873 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2876 static void lcme_flags2str(__u32 comp_flags)
2882 llapi_printf(LLAPI_MSG_NORMAL, "0");
2885 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2886 if (comp_flags & comp_flags_table[i].cfn_flag) {
2888 llapi_printf(LLAPI_MSG_NORMAL, ",");
2889 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2890 comp_flags_table[i].cfn_name);
2891 comp_flags &= ~comp_flags_table[i].cfn_flag;
2897 llapi_printf(LLAPI_MSG_NORMAL, ",");
2898 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2902 static void lov_dump_comp_v1_entry(struct find_param *param,
2903 enum lov_dump_flags flags, int index)
2905 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2906 struct lov_comp_md_entry_v1 *entry;
2907 char *separator = "";
2908 int verbose = param->fp_verbose;
2909 bool yaml = flags & LDF_YAML;
2911 entry = &comp_v1->lcm_entries[index];
2914 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2916 if (verbose & VERBOSE_COMP_ID) {
2917 if (verbose & VERBOSE_DETAIL && !yaml)
2918 llapi_printf(LLAPI_MSG_NORMAL,
2919 "%slcme_id: ", " - ");
2920 else if (verbose & ~VERBOSE_COMP_ID)
2921 llapi_printf(LLAPI_MSG_NORMAL,
2922 "%4slcme_id: ", " ");
2923 if (entry->lcme_id != LCME_ID_INVAL)
2924 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2926 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2930 if (verbose & VERBOSE_COMP_FLAGS) {
2931 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2932 if (verbose & ~VERBOSE_COMP_FLAGS)
2933 llapi_printf(LLAPI_MSG_NORMAL,
2934 "%4slcme_flags: ", " ");
2935 lcme_flags2str(entry->lcme_flags);
2939 if (verbose & VERBOSE_COMP_START) {
2940 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2941 if (verbose & ~VERBOSE_COMP_START)
2942 llapi_printf(LLAPI_MSG_NORMAL,
2943 "%4slcme_extent.e_start: ", " ");
2944 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2945 entry->lcme_extent.e_start);
2949 if (verbose & VERBOSE_COMP_END) {
2950 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2951 if (verbose & ~VERBOSE_COMP_END)
2952 llapi_printf(LLAPI_MSG_NORMAL,
2953 "%4slcme_extent.e_end: ", " ");
2954 if (entry->lcme_extent.e_end == LUSTRE_EOF)
2955 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
2957 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2958 entry->lcme_extent.e_end);
2963 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2964 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2965 } else if (verbose & VERBOSE_DETAIL) {
2966 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2967 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
2968 " ", entry->lcme_offset);
2969 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
2970 " ", entry->lcme_size);
2971 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2973 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2977 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2978 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2980 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2981 * The table below gives the answers for the specified parameters (value and
2982 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2983 * --------------------------------------
2984 * 1 | file > limit; sign > 0 | -1 / -1 |
2985 * 2 | file = limit; sign > 0 | -1 / -1 |
2986 * 3 | file < limit; sign > 0 | ? / 1 |
2987 * 4 | file > limit; sign = 0 | -1 / -1 |
2988 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2989 * 6 | file < limit; sign = 0 | ? / -1 |
2990 * 7 | file > limit; sign < 0 | 1 / 1 |
2991 * 8 | file = limit; sign < 0 | ? / -1 |
2992 * 9 | file < limit; sign < 0 | ? / -1 |
2993 * --------------------------------------
2994 * Note: 5th actually means that the value is within the interval
2995 * (limit - margin, limit]. */
2996 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2997 int sign, int negopt, unsigned long long margin,
3003 /* Drop the fraction of margin (of days). */
3004 if (file + margin <= limit)
3006 } else if (sign == 0) {
3007 if (file <= limit && file + margin > limit)
3009 else if (file + margin <= limit)
3011 } else if (sign < 0) {
3018 return negopt ? ~ret + 1 : ret;
3021 static inline struct lov_user_md *
3022 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3024 return (struct lov_user_md *)((char *)comp_v1 +
3025 comp_v1->lcm_entries[ent_idx].lcme_offset);
3028 static inline struct lov_user_ost_data_v1 *
3029 lov_v1v3_objects(struct lov_user_md *v1)
3031 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3032 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3034 return v1->lmm_objects;
3038 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3040 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3041 strlcpy(pool_name, ((struct lov_user_md_v3 *)v1)->lmm_pool_name,
3044 pool_name[0] = '\0';
3048 print_last_init_comp(struct find_param *param)
3050 /* print all component info */
3051 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3054 /* print specific component info */
3055 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3056 param->fp_check_comp_start || param->fp_check_comp_end)
3062 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3066 if (param->fp_comp_end == LUSTRE_EOF) {
3067 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3068 match = end == LUSTRE_EOF ? 1 : -1;
3069 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3070 match = end == LUSTRE_EOF ? -1 : 1;
3071 else /* at least EOF */
3073 if (param->fp_exclude_comp_end)
3076 unsigned long long margin;
3078 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3079 match = find_value_cmp(end, param->fp_comp_end,
3080 param->fp_comp_end_sign,
3081 param->fp_exclude_comp_end, margin, 0);
3088 * An example of "getstripe -v" for a two components PFL file:
3091 * lcm_magic: 0x0BD60BD0
3095 * lcm_entry_count: 2
3099 * lcme_extent.e_start: 0
3100 * lcme_extent.e_end: 1048576
3104 * lmm_magic: 0x0BD10BD0
3105 * lmm_seq: 0x200000401
3106 * lmm_object_id: 0x1
3107 * lmm_fid: [0x200000401:0x1:0x0]
3108 * lmm_stripe_count: 1
3109 * lmm_stripe_size: 1048576
3110 * lmm_pattern: raid0
3112 * lmm_stripe_offset: 0
3114 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3118 * lcme_extent.e_start: 1048576
3119 * lcme_extent.e_end: EOF
3123 * lmm_magic: 0x0BD10BD0
3124 * lmm_seq: 0x200000401
3125 * lmm_object_id: 0x1
3126 * lmm_fid: [0x200000401:0x1:0x0]
3127 * lmm_stripe_count: 2
3128 * lmm_stripe_size: 1048576
3129 * lmm_pattern: raid0
3131 * lmm_stripe_offset: 1
3133 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3134 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3136 static void lov_dump_comp_v1(struct find_param *param, char *path,
3137 enum lov_dump_flags flags)
3139 struct lov_comp_md_entry_v1 *entry;
3140 struct lov_user_ost_data_v1 *objects;
3141 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3142 struct lov_user_md_v1 *v1;
3143 char pool_name[LOV_MAXPOOLNAME + 1];
3144 int obdindex = param->fp_obd_index;
3146 bool obdstripe = false;
3148 if (obdindex != OBD_NOT_FOUND) {
3149 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3150 i < comp_v1->lcm_entry_count; i++) {
3151 if (!(comp_v1->lcm_entries[i].lcme_flags &
3155 v1 = lov_comp_entry(comp_v1, i);
3156 objects = lov_v1v3_objects(v1);
3158 for (j = 0; j < v1->lmm_stripe_count; j++) {
3159 if (obdindex == objects[j].l_ost_idx) {
3172 lov_dump_comp_v1_header(param, path, flags);
3174 flags |= LDF_INDENT;
3176 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3177 entry = &comp_v1->lcm_entries[i];
3179 if (param->fp_check_comp_flags) {
3180 if ((param->fp_exclude_comp_flags &&
3181 (param->fp_comp_flags & entry->lcme_flags)) ||
3182 (!param->fp_exclude_comp_flags &&
3183 !(param->fp_comp_flags & entry->lcme_flags)))
3187 if (param->fp_check_comp_id &&
3188 param->fp_comp_id != entry->lcme_id)
3191 if (param->fp_check_comp_start) {
3192 match = find_value_cmp(entry->lcme_extent.e_start,
3193 param->fp_comp_start,
3194 param->fp_comp_start_sign,
3196 param->fp_comp_start_units, 0);
3201 if (param->fp_check_comp_end) {
3202 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3208 if (print_last_init_comp(param)) {
3210 * if part of stripe info is needed, we'd print only
3211 * the last instantiated component info.
3213 if (entry->lcme_flags & LCME_FL_INIT)
3219 if (entry->lcme_flags & LCME_FL_INIT) {
3220 if (obdindex != OBD_NOT_FOUND) {
3221 flags |= LDF_SKIP_OBJS;
3222 v1 = lov_comp_entry(comp_v1, i);
3223 objects = lov_v1v3_objects(v1);
3225 for (j = 0; j < v1->lmm_stripe_count; j++) {
3226 if (obdindex == objects[j].l_ost_idx) {
3227 flags &= ~LDF_SKIP_OBJS;
3232 flags &= ~LDF_SKIP_OBJS;
3235 flags |= LDF_SKIP_OBJS;
3238 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3240 lov_dump_comp_v1_entry(param, flags, i);
3242 v1 = lov_comp_entry(comp_v1, i);
3243 objects = lov_v1v3_objects(v1);
3244 lov_v1v3_pool_name(v1, pool_name);
3246 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3247 param->fp_max_depth, param->fp_verbose,
3250 if (print_last_init_comp(param)) {
3252 * directory layout contains only layout template, print the
3256 i = comp_v1->lcm_entry_count - 1;
3259 flags &= ~LDF_SKIP_OBJS;
3261 lov_dump_comp_v1_entry(param, flags, i);
3263 v1 = lov_comp_entry(comp_v1, i);
3264 objects = lov_v1v3_objects(v1);
3265 lov_v1v3_pool_name(v1, pool_name);
3267 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3268 param->fp_max_depth, param->fp_verbose,
3273 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3274 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3277 static inline bool has_any_comp_options(struct find_param *param)
3279 int verbose = param->fp_verbose;
3281 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3282 param->fp_check_comp_start || param->fp_check_comp_end ||
3283 param->fp_check_comp_flags)
3286 /* show full layout information, not component specific */
3287 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3290 return verbose & VERBOSE_COMP_OPTS;
3293 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3296 struct lov_user_md *lum = &orig->lmd_lmm;
3297 struct lov_user_mds_data *new;
3298 struct lov_comp_md_v1 *comp_v1;
3299 struct lov_comp_md_entry_v1 *ent;
3300 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3301 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3304 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3306 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3310 memcpy(new, orig, sizeof(lstat_t));
3312 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3313 comp_v1->lcm_magic = lum->lmm_magic;
3314 comp_v1->lcm_size = lum_off + lum_size;
3315 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3316 comp_v1->lcm_flags = 0;
3317 comp_v1->lcm_entry_count = 1;
3319 ent = &comp_v1->lcm_entries[0];
3321 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3322 ent->lcme_extent.e_start = 0;
3323 ent->lcme_extent.e_end = LUSTRE_EOF;
3324 ent->lcme_offset = lum_off;
3325 ent->lcme_size = lum_size;
3327 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3332 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3333 enum lov_dump_flags flags)
3335 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3337 if (has_any_comp_options(param)) {
3338 struct lov_user_mds_data *new_lmd, *orig_lmd;
3340 orig_lmd = param->fp_lmd;
3341 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3342 if (new_lmd != NULL) {
3343 param->fp_lmd = new_lmd;
3344 lov_dump_comp_v1(param, path, flags);
3345 param->fp_lmd = orig_lmd;
3351 if (magic == LOV_USER_MAGIC_V1) {
3352 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3353 param->fp_lmd->lmd_lmm.lmm_objects,
3354 path, param->fp_obd_index,
3355 param->fp_max_depth, param->fp_verbose,
3358 char pool_name[LOV_MAXPOOLNAME + 1];
3359 struct lov_user_ost_data_v1 *objects;
3360 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3362 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
3363 objects = lmmv3->lmm_objects;
3364 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3365 objects, path, param->fp_obd_index,
3366 param->fp_max_depth, param->fp_verbose,
3371 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3372 enum lov_dump_flags flags)
3376 if (param->fp_get_lmv || param->fp_get_default_lmv)
3377 magic = (__u32)param->fp_lmv_md->lum_magic;
3379 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3382 flags |= LDF_IS_RAW;
3387 case LOV_USER_MAGIC_V1:
3388 case LOV_USER_MAGIC_V3:
3389 lov_dump_plain_user_lmm(param, path, flags);
3392 case LMV_USER_MAGIC: {
3393 char pool_name[LOV_MAXPOOLNAME + 1];
3394 struct lmv_user_md *lum;
3396 lum = (struct lmv_user_md *)param->fp_lmv_md;
3397 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
3398 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3399 param->fp_max_depth, param->fp_verbose,
3403 case LOV_USER_MAGIC_COMP_V1:
3404 lov_dump_comp_v1(param, path, flags);
3407 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3408 "(expecting one of %#x %#x %#x %#x)\n",
3409 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3410 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3411 LMV_USER_MAGIC, LMV_MAGIC_V1);
3416 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3422 fname = strrchr(path, '/');
3424 /* It should be a file (or other non-directory) */
3425 if (fname == NULL) {
3426 dname = (char *)malloc(2);
3430 fname = (char *)path;
3432 dname = (char *)malloc(fname - path + 1);
3435 strncpy(dname, path, fname - path);
3436 dname[fname - path] = '\0';
3440 fd = open(dname, O_RDONLY | O_NONBLOCK);
3447 strcpy((char *)lum, fname);
3448 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3451 if (close(fd) == -1 && rc == 0)
3458 int llapi_file_lookup(int dirfd, const char *name)
3460 struct obd_ioctl_data data = { 0 };
3465 if (dirfd < 0 || name == NULL)
3468 data.ioc_version = OBD_IOCTL_VERSION;
3469 data.ioc_len = sizeof(data);
3470 data.ioc_inlbuf1 = (char *)name;
3471 data.ioc_inllen1 = strlen(name) + 1;
3473 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
3475 llapi_error(LLAPI_MSG_ERROR, rc,
3476 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3481 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3487 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3488 * Return -1 or 1 if file timestamp does not or does match the given criteria
3489 * correspondingly. Return 0 if the MDS time is being checked and there are
3490 * attributes on OSTs and it is not yet clear if the timespamp matches.
3492 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3493 * updated timestamps. */
3494 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3499 /* Check if file is accepted. */
3500 if (param->fp_atime) {
3501 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3502 param->fp_asign, param->fp_exclude_atime,
3509 if (param->fp_mtime) {
3510 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3511 param->fp_msign, param->fp_exclude_mtime,
3516 /* If the previous check matches, but this one is not yet clear,
3517 * we should return 0 to do an RPC on OSTs. */
3522 if (param->fp_ctime) {
3523 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3524 param->fp_csign, param->fp_exclude_ctime,
3529 /* If the previous check matches, but this one is not yet clear,
3530 * we should return 0 to do an RPC on OSTs. */
3539 * Check whether the stripes matches the indexes user provided
3543 static int check_obd_match(struct find_param *param)
3545 struct lov_user_ost_data_v1 *objects;
3546 struct lov_comp_md_v1 *comp_v1 = NULL;
3547 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3548 lstat_t *st = ¶m->fp_lmd->lmd_st;
3549 int i, j, k, count = 1;
3551 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3554 if (!S_ISREG(st->st_mode))
3557 /* Only those files should be accepted, which have a
3558 * stripe on the specified OST. */
3559 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3560 comp_v1 = (struct lov_comp_md_v1 *)v1;
3561 count = comp_v1->lcm_entry_count;
3564 for (i = 0; i < count; i++) {
3566 v1 = lov_comp_entry(comp_v1, i);
3568 objects = lov_v1v3_objects(v1);
3570 for (j = 0; j < v1->lmm_stripe_count; j++) {
3571 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3574 for (k = 0; k < param->fp_num_obds; k++) {
3575 if (param->fp_obd_indexes[k] ==
3576 objects[j].l_ost_idx)
3577 return !param->fp_exclude_obd;
3582 return param->fp_exclude_obd;
3585 static int check_mdt_match(struct find_param *param)
3589 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3592 /* FIXME: For striped dir, we should get stripe information and check */
3593 for (i = 0; i < param->fp_num_mdts; i++) {
3594 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3595 return !param->fp_exclude_mdt;
3598 if (param->fp_exclude_mdt)
3605 * Check whether the obd is active or not, if it is
3606 * not active, just print the object affected by this
3609 static int print_failed_tgt(struct find_param *param, char *path, int type)
3611 struct obd_statfs stat_buf;
3612 struct obd_uuid uuid_buf;
3615 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3618 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3619 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3620 ret = llapi_obd_statfs(path, type,
3621 param->fp_obd_index, &stat_buf,
3624 llapi_printf(LLAPI_MSG_NORMAL,
3625 "obd_uuid: %s failed %s ",
3626 param->fp_obd_uuid->uuid,
3633 static int find_check_stripe_size(struct find_param *param)
3635 struct lov_comp_md_v1 *comp_v1 = NULL;
3636 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3637 int ret, i, count = 1;
3639 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3640 comp_v1 = (struct lov_comp_md_v1 *)v1;
3641 count = comp_v1->lcm_entry_count;
3642 ret = param->fp_exclude_stripe_size ? 1 : -1;
3645 for (i = 0; i < count; i++) {
3647 v1 = lov_comp_entry(comp_v1, i);
3649 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3650 param->fp_stripe_size_sign,
3651 param->fp_exclude_stripe_size,
3652 param->fp_stripe_size_units, 0);
3653 /* If any stripe_size matches */
3661 static __u32 find_get_stripe_count(struct find_param *param)
3663 struct lov_comp_md_v1 *comp_v1 = NULL;
3664 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3666 __u32 stripe_count = 0;
3668 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3669 comp_v1 = (struct lov_comp_md_v1 *)v1;
3670 count = comp_v1->lcm_entry_count;
3673 for (i = 0; i < count; i++) {
3675 v1 = lov_comp_entry(comp_v1, i);
3676 stripe_count += v1->lmm_stripe_count;
3679 return stripe_count;
3682 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3684 static int find_check_layout(struct find_param *param)
3686 struct lov_comp_md_v1 *comp_v1 = NULL;
3687 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3689 bool found = false, valid = false;
3691 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3692 comp_v1 = (struct lov_comp_md_v1 *)v1;
3693 count = comp_v1->lcm_entry_count;
3696 for (i = 0; i < count; i++) {
3698 v1 = lov_comp_entry(comp_v1, i);
3700 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3704 if (v1->lmm_pattern & param->fp_layout) {
3713 if ((found && !param->fp_exclude_layout) ||
3714 (!found && param->fp_exclude_layout))
3720 static int find_check_pool(struct find_param *param)
3722 struct lov_comp_md_v1 *comp_v1 = NULL;
3723 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3724 struct lov_user_md_v3 *v3 = (void *)v1;
3728 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3729 comp_v1 = (struct lov_comp_md_v1 *)v1;
3730 count = comp_v1->lcm_entry_count;
3731 /* empty requested pool is taken as no pool search */
3732 if (count == 0 && param->fp_poolname[0] == '\0')
3736 for (i = 0; i < count; i++) {
3737 if (comp_v1 != NULL)
3738 v1 = lov_comp_entry(comp_v1, i);
3740 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3741 (param->fp_poolname[0] == '\0')) ||
3742 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3743 (strncmp(v3->lmm_pool_name,
3744 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3745 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3746 (strcmp(param->fp_poolname, "*") == 0))) {
3752 if ((found && !param->fp_exclude_pool) ||
3753 (!found && param->fp_exclude_pool))
3759 static int find_check_comp_options(struct find_param *param)
3761 lstat_t *st = ¶m->fp_lmd->lmd_st;
3762 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3763 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3764 struct lov_comp_md_entry_v1 *entry;
3767 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3768 comp_v1 = (struct lov_comp_md_v1 *)v1;
3770 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3771 if (forged_v1 == NULL)
3773 comp_v1 = forged_v1;
3774 comp_v1->lcm_entry_count = 1;
3775 entry = &comp_v1->lcm_entries[0];
3776 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3777 entry->lcme_extent.e_start = 0;
3778 entry->lcme_extent.e_end = LUSTRE_EOF;
3781 /* invalid case, don't match for any kind of search. */
3782 if (comp_v1->lcm_entry_count == 0) {
3787 if (param->fp_check_comp_count) {
3788 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3789 param->fp_comp_count,
3790 param->fp_comp_count_sign,
3791 param->fp_exclude_comp_count, 1, 0);
3797 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3798 entry = &comp_v1->lcm_entries[i];
3800 if (param->fp_check_comp_flags) {
3801 if (((entry->lcme_flags & param->fp_comp_flags) &&
3802 param->fp_exclude_comp_flags) ||
3803 (!(entry->lcme_flags & param->fp_comp_flags) &&
3804 !param->fp_exclude_comp_flags))
3813 if (param->fp_check_comp_start) {
3814 ret = find_value_cmp(entry->lcme_extent.e_start,
3815 param->fp_comp_start,
3816 param->fp_comp_start_sign,
3817 param->fp_exclude_comp_start,
3818 param->fp_comp_start_units, 0);
3823 if (param->fp_check_comp_end) {
3824 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3830 /* the component matches all criteria */
3834 if (forged_v1 != NULL)
3839 static bool find_check_lmm_info(struct find_param *param)
3841 return param->fp_check_pool || param->fp_check_stripe_count ||
3842 param->fp_check_stripe_size || param->fp_check_layout ||
3843 param->fp_check_comp_count || param->fp_check_comp_end ||
3844 param->fp_check_comp_start || param->fp_check_comp_flags ||
3845 param->fp_check_projid;
3849 * Get file/directory project id.
3850 * by the open fd resides on.
3851 * Return 0 and project id on success, or -ve errno.
3853 static int fget_projid(int fd, int *projid)
3858 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3862 *projid = fsx.fsx_projid;
3866 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3867 void *data, struct dirent64 *de)
3869 struct find_param *param = (struct find_param *)data;
3870 DIR *dir = dirp == NULL ? NULL : *dirp;
3871 int decision = 1; /* 1 is accepted; -1 is rejected. */
3872 lstat_t *st = ¶m->fp_lmd->lmd_st;
3874 int checked_type = 0;
3876 __u32 stripe_count = 0;
3879 if (parent == NULL && dir == NULL)
3882 /* If a regular expression is presented, make the initial decision */
3883 if (param->fp_pattern != NULL) {
3884 char *fname = strrchr(path, '/');
3885 fname = (fname == NULL ? path : fname + 1);
3886 ret = fnmatch(param->fp_pattern, fname, 0);
3887 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3888 (ret == 0 && param->fp_exclude_pattern))
3892 /* See if we can check the file type from the dirent. */
3893 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3896 if (DTTOIF(de->d_type) == param->fp_type) {
3897 if (param->fp_exclude_type)
3900 if (!param->fp_exclude_type)
3907 /* Request MDS for the stat info if some of these parameters need
3908 * to be compared. */
3909 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3910 param->fp_check_uid || param->fp_check_gid ||
3911 param->fp_atime || param->fp_mtime || param->fp_ctime ||
3912 param->fp_check_size || find_check_lmm_info(param) ||
3913 param->fp_check_mdt_count || param->fp_check_hash_type)
3916 if (param->fp_type != 0 && checked_type == 0)
3919 if (decision == 0) {
3920 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
3921 param->fp_get_lmv = 1;
3922 ret = cb_get_dirstripe(path, dir, param);
3927 param->fp_lmd->lmd_lmm.lmm_magic = 0;
3928 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
3929 param->fp_lum_size);
3930 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
3931 find_check_lmm_info(param)) {
3932 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
3934 /* We need to "fake" the "use the default" values
3935 * since the lmm struct is zeroed out at this point. */
3936 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3937 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
3939 ostid_set_seq(&lmm->lmm_oi,
3940 FID_SEQ_LOV_DEFAULT);
3941 lmm->lmm_stripe_size = 0;
3942 lmm->lmm_stripe_count = 0;
3943 lmm->lmm_stripe_offset = -1;
3945 if (ret == 0 && param->fp_mdt_uuid != NULL) {
3947 ret = llapi_file_fget_mdtidx(dirfd(dir),
3948 ¶m->fp_file_mdt_index);
3949 } else if (S_ISREG(st->st_mode)) {
3950 /* FIXME: we could get the MDT index from the
3951 * file's FID in lmd->lmd_lmm.lmm_oi without
3952 * opening the file, once we are sure that
3953 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
3954 * That would still be an ioctl() to map the
3955 * FID to the MDT, but not an open RPC. */
3956 fd = open(path, O_RDONLY);
3958 ret = llapi_file_fget_mdtidx(fd,
3959 ¶m->fp_file_mdt_index);
3964 /* For a special file, we assume it resides on
3965 * the same MDT as the parent directory. */
3966 ret = llapi_file_fget_mdtidx(dirfd(parent),
3967 ¶m->fp_file_mdt_index);
3978 stripe_count = find_get_stripe_count(param);
3982 if (param->fp_type && !checked_type) {
3983 if ((st->st_mode & S_IFMT) == param->fp_type) {
3984 if (param->fp_exclude_type)
3987 if (!param->fp_exclude_type)
3993 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
3994 if (lustre_fs && param->fp_got_uuids &&
3995 param->fp_dev != st->st_dev) {
3996 /* A lustre/lustre mount point is crossed. */
3997 param->fp_got_uuids = 0;
3998 param->fp_obds_printed = 0;
3999 param->fp_mdt_index = OBD_NOT_FOUND;
4000 param->fp_obd_index = OBD_NOT_FOUND;
4003 if (lustre_fs && !param->fp_got_uuids) {
4004 ret = setup_target_indexes(dir ? dir : parent, path,
4009 param->fp_dev = st->st_dev;
4010 } else if (!lustre_fs && param->fp_got_uuids) {
4011 /* A lustre/non-lustre mount point is crossed. */
4012 param->fp_got_uuids = 0;
4013 param->fp_mdt_index = OBD_NOT_FOUND;
4014 param->fp_obd_index = OBD_NOT_FOUND;
4018 if (param->fp_check_stripe_size) {
4019 decision = find_check_stripe_size(param);
4024 if (param->fp_check_stripe_count) {
4025 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4026 param->fp_stripe_count_sign,
4027 param->fp_exclude_stripe_count, 1, 0);
4032 if (param->fp_check_mdt_count) {
4033 decision = find_value_cmp(
4034 param->fp_lmv_md->lum_stripe_count,
4035 param->fp_mdt_count,
4036 param->fp_mdt_count_sign,
4037 param->fp_exclude_mdt_count, 1, 0);
4042 if (param->fp_check_layout) {
4043 decision = find_check_layout(param);
4048 if (param->fp_check_hash_type) {
4051 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4052 if ((found && param->fp_exclude_hash_type) ||
4053 (!found && !param->fp_exclude_hash_type)) {
4059 /* If an OBD UUID is specified but none matches, skip this file. */
4060 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4061 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4064 /* If an OST or MDT UUID is given, and some OST matches,
4066 if (param->fp_obd_index != OBD_NOT_FOUND ||
4067 param->fp_mdt_index != OBD_NOT_FOUND) {
4068 if (param->fp_obd_uuid) {
4069 if (check_obd_match(param)) {
4070 /* If no mdtuuid is given, we are done.
4071 * Otherwise, fall through to the mdtuuid
4073 if (!param->fp_mdt_uuid)
4080 if (param->fp_mdt_uuid) {
4081 if (check_mdt_match(param))
4088 if (param->fp_check_uid) {
4089 if (st->st_uid == param->fp_uid) {
4090 if (param->fp_exclude_uid)
4093 if (!param->fp_exclude_uid)
4098 if (param->fp_check_gid) {
4099 if (st->st_gid == param->fp_gid) {
4100 if (param->fp_exclude_gid)
4103 if (!param->fp_exclude_gid)
4108 if (param->fp_check_projid) {
4112 fd = open(path, O_RDONLY);
4115 ret = fget_projid(fd, &projid);
4120 if (projid == param->fp_projid) {
4121 if (param->fp_exclude_uid)
4124 if (!param->fp_exclude_projid)
4129 if (param->fp_check_pool) {
4130 decision = find_check_pool(param);
4135 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4136 param->fp_check_comp_start || param->fp_check_comp_end) {
4137 decision = find_check_comp_options(param);
4142 /* Check the time on mds. */
4144 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4147 for_mds = lustre_fs ?
4148 (S_ISREG(st->st_mode) && stripe_count) : 0;
4149 decision = find_time_check(st, param, for_mds);
4154 /* If file still fits the request, ask ost for updated info.
4155 The regular stat is almost of the same speed as some new
4156 'glimpse-size-ioctl'. */
4158 if (param->fp_check_size && S_ISREG(st->st_mode) && stripe_count)
4161 if (param->fp_check_size && S_ISDIR(st->st_mode))
4165 /* For regular files with the stripe the decision may have not
4166 * been taken yet if *time or size is to be checked. */
4167 if (param->fp_obd_index != OBD_NOT_FOUND)
4168 print_failed_tgt(param, path, LL_STATFS_LOV);
4170 if (param->fp_mdt_index != OBD_NOT_FOUND)
4171 print_failed_tgt(param, path, LL_STATFS_LMV);
4174 ret = fstat_f(dirfd(dir), st);
4175 else if (de != NULL)
4176 ret = fstatat_f(dirfd(parent), de->d_name, st,
4177 AT_SYMLINK_NOFOLLOW);
4179 ret = lstat_f(path, st);
4182 if (errno == ENOENT) {
4183 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4184 "warning: %s: %s does not exist",
4189 llapi_error(LLAPI_MSG_ERROR, ret,
4190 "%s: IOC_LOV_GETINFO on %s failed",
4196 /* Check the time on osc. */
4197 decision = find_time_check(st, param, 0);
4202 if (param->fp_check_size)
4203 decision = find_value_cmp(st->st_size, param->fp_size,
4204 param->fp_size_sign,
4205 param->fp_exclude_size,
4206 param->fp_size_units, 0);
4208 if (decision != -1) {
4209 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4210 if (param->fp_zero_end)
4211 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4213 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4218 /* Do not get down anymore? */
4219 if (param->fp_depth == param->fp_max_depth) {
4230 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4231 void *param_data, struct dirent64 *de)
4233 struct find_param *param = (struct find_param *)param_data;
4234 DIR *tmp_parent = parent;
4235 char raw[MAX_IOC_BUFLEN] = {'\0'};
4237 struct obd_ioctl_data data = { 0 };
4244 if (parent == NULL && dirp == NULL)
4250 if (parent == NULL) {
4251 tmp_parent = opendir_parent(path);
4252 if (tmp_parent == NULL) {
4255 llapi_error(LLAPI_MSG_ERROR, ret,
4256 "can not open %s", path);
4261 fd = dirfd(tmp_parent);
4263 path_copy = strdup(path);
4264 filename = basename(path_copy);
4265 data.ioc_inlbuf1 = (char *)filename;
4266 data.ioc_inllen1 = strlen(filename) + 1;
4267 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4268 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4269 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4271 llapi_error(LLAPI_MSG_ERROR, ret,
4272 "llapi_obd_statfs: error packing ioctl data");
4277 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4279 if (errno == EBUSY && !retry) {
4280 /* because migrate may not be able to lock all involved
4281 * objects in order, for some of them it try lock, while
4282 * there may be conflicting COS locks and cause migrate
4283 * fail with EBUSY, hope a sync() could cause
4284 * transaction commit and release these COS locks. */
4290 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4291 path, strerror(-ret), ret);
4293 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4294 fprintf(stdout, "migrate %s to MDT%d\n",
4295 path, param->fp_mdt_index);
4300 /* If the directory is being migration, we need
4301 * close the directory after migration,
4302 * so the old directory cache will be cleanup
4303 * on the client side, and re-open to get the
4304 * new directory handle */
4305 *dirp = opendir(path);
4306 if (*dirp == NULL) {
4308 llapi_error(LLAPI_MSG_ERROR, ret,
4309 "%s: Failed to open '%s'", __func__, path);
4314 closedir(tmp_parent);
4321 int llapi_migrate_mdt(char *path, struct find_param *param)
4323 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4326 int llapi_mv(char *path, struct find_param *param)
4328 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4329 static bool printed;
4332 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4333 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4337 return llapi_migrate_mdt(path, param);
4340 int llapi_find(char *path, struct find_param *param)
4342 return param_callback(path, cb_find_init, cb_common_fini, param);
4346 * Get MDT number that the file/directory inode referenced
4347 * by the open fd resides on.
4348 * Return 0 and mdtidx on success, or -ve errno.
4350 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4352 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4357 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4358 struct dirent64 *de)
4360 struct find_param *param = (struct find_param *)data;
4361 DIR *d = dirp == NULL ? NULL : *dirp;
4365 if (parent == NULL && d == NULL)
4369 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4370 } else /* if (parent) */ {
4373 fd = open(path, O_RDONLY | O_NOCTTY);
4375 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4383 if (ret == -ENODATA) {
4384 if (!param->fp_obd_uuid)
4385 llapi_printf(LLAPI_MSG_NORMAL,
4386 "'%s' has no stripe info\n", path);
4388 } else if (ret == -ENOENT) {
4389 llapi_error(LLAPI_MSG_WARN, ret,
4390 "warning: %s: '%s' does not exist",
4393 } else if (ret == -ENOTTY) {
4394 llapi_error(LLAPI_MSG_ERROR, ret,
4395 "%s: '%s' not on a Lustre fs",
4398 llapi_error(LLAPI_MSG_ERROR, ret,
4399 "error: %s: '%s' failed get_mdtidx",
4405 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4406 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4408 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4412 /* Do not go down anymore? */
4413 if (param->fp_depth == param->fp_max_depth)
4421 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4422 struct dirent64 *de)
4424 struct find_param *param = (struct find_param *)data;
4425 DIR *d = dirp == NULL ? NULL : *dirp;
4428 if (parent == NULL && d == NULL)
4431 if (param->fp_obd_uuid) {
4432 param->fp_quiet = 1;
4433 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4439 if (param->fp_get_lmv || param->fp_get_default_lmv) {
4440 ret = cb_get_dirstripe(path, d, param);
4442 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
4443 (void *)¶m->fp_lmd->lmd_lmm);
4446 } else if (parent && !param->fp_get_lmv && !param->fp_get_default_lmv) {
4447 char *fname = strrchr(path, '/');
4448 fname = (fname == NULL ? path : fname + 1);
4450 strlcpy((char *)¶m->fp_lmd->lmd_lmm, fname,
4451 param->fp_lum_size);
4453 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
4454 (void *)¶m->fp_lmd->lmd_lmm);
4460 if (errno == ENODATA && d != NULL) {
4461 /* We need to "fake" the "use the default" values
4462 * since the lmm struct is zeroed out at this point.
4463 * The magic needs to be set in order to satisfy
4464 * a check later on in the code path.
4465 * The object_seq needs to be set for the "(Default)"
4466 * prefix to be displayed. */
4467 if (param->fp_get_default_lmv) {
4468 struct lmv_user_md *lum = param->fp_lmv_md;
4470 lum->lum_magic = LMV_USER_MAGIC;
4471 lum->lum_stripe_count = 0;
4472 lum->lum_stripe_offset = -1;
4474 } else if (param->fp_get_lmv) {
4475 struct lmv_user_md *lum = param->fp_lmv_md;
4478 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4481 lum->lum_magic = LMV_MAGIC_V1;
4482 lum->lum_stripe_count = 0;
4483 lum->lum_stripe_offset = mdtidx;
4486 struct lov_user_md *lmm =
4487 ¶m->fp_lmd->lmd_lmm;
4489 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4491 ostid_set_seq(&lmm->lmm_oi,
4492 FID_SEQ_LOV_DEFAULT);
4493 lmm->lmm_stripe_count = 0;
4494 lmm->lmm_stripe_size = 0;
4495 lmm->lmm_stripe_offset = -1;
4498 } else if (errno == ENODATA && parent != NULL) {
4499 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4500 llapi_printf(LLAPI_MSG_NORMAL,
4501 "%s has no stripe info\n", path);
4503 } else if (errno == ENOENT) {
4504 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4505 "warning: %s: %s does not exist",
4508 } else if (errno == ENOTTY) {
4510 llapi_error(LLAPI_MSG_ERROR, ret,
4511 "%s: '%s' not on a Lustre fs?",
4516 llapi_error(LLAPI_MSG_ERROR, ret,
4517 "error: %s: %s failed for %s",
4518 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4519 "IOC_MDC_GETFILESTRIPE", path);
4526 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4527 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4530 /* Do not get down anymore? */
4531 if (param->fp_depth == param->fp_max_depth)
4539 int llapi_getstripe(char *path, struct find_param *param)
4541 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4542 cb_get_mdt_index : cb_getstripe,
4543 cb_common_fini, param);
4546 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4547 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4549 char raw[MAX_IOC_BUFLEN] = {'\0'};
4551 struct obd_ioctl_data data = { 0 };
4554 data.ioc_inlbuf1 = (char *)&type;
4555 data.ioc_inllen1 = sizeof(__u32);
4556 data.ioc_inlbuf2 = (char *)&index;
4557 data.ioc_inllen2 = sizeof(__u32);
4558 data.ioc_pbuf1 = (char *)stat_buf;
4559 data.ioc_plen1 = sizeof(struct obd_statfs);
4560 data.ioc_pbuf2 = (char *)uuid_buf;
4561 data.ioc_plen2 = sizeof(struct obd_uuid);
4563 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4565 llapi_error(LLAPI_MSG_ERROR, rc,
4566 "llapi_obd_statfs: error packing ioctl data");
4570 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4572 return rc < 0 ? -errno : 0;
4575 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4576 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4581 fd = open(path, O_RDONLY);
4584 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4586 /* If we can't even open a file on the filesystem (e.g. with
4587 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4591 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4598 #define MAX_STRING_SIZE 128
4600 int llapi_ping(char *obd_type, char *obd_name)
4606 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4607 obd_type, obd_name);
4611 fd = open(path.gl_pathv[0], O_WRONLY);
4614 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4619 /* The purpose is to send a byte as a ping, whatever this byte is. */
4620 /* coverity[uninit_use_in_call] */
4621 rc = write(fd, buf, 1);
4629 cfs_free_param_data(&path);
4633 int llapi_target_iterate(int type_num, char **obd_type,
4634 void *args, llapi_cb_t cb)
4636 char buf[MAX_STRING_SIZE];
4641 rc = cfs_get_param_paths(¶m, "devices");
4645 fp = fopen(param.gl_pathv[0], "r");
4648 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4653 while (fgets(buf, sizeof(buf), fp) != NULL) {
4654 char *obd_type_name = NULL;
4655 char *obd_name = NULL;
4656 char *obd_uuid = NULL;
4658 struct obd_statfs osfs_buffer;
4660 while(bufp[0] == ' ')
4663 for(i = 0; i < 3; i++) {
4664 obd_type_name = strsep(&bufp, " ");
4666 obd_name = strsep(&bufp, " ");
4667 obd_uuid = strsep(&bufp, " ");
4669 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4671 for (i = 0; i < type_num; i++) {
4672 if (strcmp(obd_type_name, obd_type[i]) != 0)
4675 cb(obd_type_name, obd_name, obd_uuid, args);
4680 cfs_free_param_data(¶m);
4684 static void do_target_check(char *obd_type_name, char *obd_name,
4685 char *obd_uuid, void *args)
4689 rc = llapi_ping(obd_type_name, obd_name);
4690 if (rc == ENOTCONN) {
4691 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4693 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4695 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4699 int llapi_target_check(int type_num, char **obd_type, char *dir)
4701 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4704 #undef MAX_STRING_SIZE
4706 /* Is this a lustre fs? */
4707 int llapi_is_lustre_mnttype(const char *type)
4709 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4712 /* Is this a lustre client fs? */
4713 int llapi_is_lustre_mnt(struct mntent *mnt)
4715 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4716 strstr(mnt->mnt_fsname, ":/") != NULL);
4719 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4721 char fsname[PATH_MAX + 1];
4725 rc = llapi_search_fsname(mnt, fsname);
4729 root = open(mnt, O_RDONLY | O_DIRECTORY);
4732 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4736 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4744 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4745 * format must have %s%s, buf must be > 16
4746 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4747 * then buf = "lustre-MDT0000"
4749 static int get_mdtname(char *name, char *format, char *buf)
4751 char suffix[]="-MDT0000";
4752 int len = strlen(name);
4754 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4755 name[len - 5] = '\0';
4760 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4763 /* Not enough room to add suffix */
4764 llapi_err_noerrno(LLAPI_MSG_ERROR,
4765 "Invalid MDT name |%s|", name);
4770 return sprintf(buf, format, name, suffix);
4773 /** ioctl on filsystem root, with mdtindex sent as data
4774 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4775 * \param mdtidxp pointer to integer within data to be filled in with the
4776 * mdt index (0 if no mdt is specified). NULL won't be filled.
4778 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4786 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4787 Open root and parse mdt index. */
4788 if (mdtname[0] == '/') {
4790 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4791 (char *)mdtname, -1);
4793 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4795 ptr = fsname + strlen(fsname) - 8;
4797 index = strtol(ptr + 4, NULL, 16);
4798 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4802 llapi_err_noerrno(LLAPI_MSG_ERROR,
4803 "Can't open %s: %d\n", mdtname, rc);
4810 rc = ioctl(fd, opc, data);
4819 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4820 int buflen, long long *recno, int *linkno)
4822 const char *fidstr_orig = fidstr;
4824 struct getinfo_fid2path *gf;
4829 while (*fidstr == '[')
4832 sscanf(fidstr, SFID, RFID(&fid));
4833 if (!fid_is_sane(&fid)) {
4834 llapi_err_noerrno(LLAPI_MSG_ERROR,
4835 "bad FID format '%s', should be [seq:oid:ver]"
4836 " (e.g. "DFID")\n", fidstr_orig,
4837 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4841 gf = malloc(sizeof(*gf) + buflen);
4846 gf->gf_recno = *recno;
4847 gf->gf_linkno = *linkno;
4848 gf->gf_pathlen = buflen;
4850 /* Take path or fsname */
4851 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4856 /* strip out instances of // */
4857 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4858 if ((*a == '/') && (*(a + 1) == '/'))
4865 if (buf[0] == '\0') { /* ROOT path */
4870 *recno = gf->gf_recno;
4871 *linkno = gf->gf_linkno;
4878 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
4881 struct lustre_mdt_attrs *lma;
4885 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4887 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4890 lma = (struct lustre_mdt_attrs *)buf;
4891 fid_le_to_cpu(fid, &lma->lma_self_fid);
4895 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
4900 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4909 int llapi_fd2fid(int fd, struct lu_fid *fid)
4913 memset(fid, 0, sizeof(*fid));
4915 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4916 if (rc == -EINVAL || rc == -ENOTTY)
4917 rc = fid_from_lma(NULL, fd, fid);
4922 int llapi_path2fid(const char *path, struct lu_fid *fid)
4926 memset(fid, 0, sizeof(*fid));
4927 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4929 if (errno == ELOOP || errno == ENXIO)
4930 return fid_from_lma(path, -1, fid);
4934 rc = llapi_fd2fid(fd, fid);
4935 if (rc == -EINVAL || rc == -ENOTTY)
4936 rc = fid_from_lma(path, -1, fid);
4942 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
4943 char *name, size_t name_size)
4945 struct getparent *gp;
4948 gp = malloc(sizeof(*gp) + name_size);
4952 gp->gp_linkno = linkno;
4953 gp->gp_name_size = name_size;
4955 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4961 *parent_fid = gp->gp_fid;
4963 strncpy(name, gp->gp_name, name_size);
4964 name[name_size - 1] = '\0';
4971 int llapi_path2parent(const char *path, unsigned int linkno,
4972 struct lu_fid *parent_fid, char *name, size_t name_size)
4977 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4981 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4986 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4991 root = open(mnt, O_RDONLY | O_DIRECTORY);
4994 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4998 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5001 llapi_error(LLAPI_MSG_ERROR, rc,
5002 "ioctl on %s for getting connect flags failed", mnt);
5009 * Get a 64-bit value representing the version of file data pointed by fd.
5011 * Each write or truncate, flushed on OST, will change this value. You can use
5012 * this value to verify if file data was modified. This only checks the file
5013 * data, not metadata.
5015 * \param flags 0: no flush pages, usually used it the process has already
5017 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5019 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5020 * pages from clients.
5022 * \retval 0 on success.
5023 * \retval -errno on error.
5025 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5028 struct ioc_data_version idv;
5030 idv.idv_flags = (__u32)flags;
5032 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5036 *data_version = idv.idv_version;
5042 * Fetch layout version from OST objects. Layout version on OST objects are
5043 * only set when the file is a mirrored file AND after the file has been
5044 * written at least once.
5046 * It actually fetches the least layout version from the objects.
5048 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5051 struct ioc_data_version idv = { 0 };
5053 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5057 *layout_version = idv.idv_layout_version;
5063 * Create a file without any name open it for read/write
5065 * - file is created as if it were a standard file in the given \a directory
5066 * - file does not appear in \a directory and mtime does not change because
5067 * the filename is handled specially by the Lustre MDS.
5068 * - file is removed at final close
5069 * - file modes are rw------- since it doesn't make sense to have a read-only
5070 * or write-only file that cannot be opened again.
5071 * - if user wants another mode it must use fchmod() on the open file, no
5072 * security problems arise because it cannot be opened by another process.
5074 * \param[in] directory directory from which to inherit layout/MDT idx
5075 * \param[in] idx MDT index on which the file is created,
5076 * \a idx == -1 means no specific MDT is requested
5077 * \param[in] open_flags standard open(2) flags
5079 * \retval 0 on success.
5080 * \retval -errno on error.
5082 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5084 char file_path[PATH_MAX];
5085 char filename[PATH_MAX];
5086 int saved_errno = errno;
5094 snprintf(filename, sizeof(filename),
5095 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5097 snprintf(filename, sizeof(filename),
5098 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5100 rc = snprintf(file_path, sizeof(file_path),
5101 "%s/%s", directory, filename);
5102 if (rc >= sizeof(file_path))
5105 fd = open(file_path,
5106 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5108 } while (fd < 0 && errno == EEXIST);
5111 llapi_error(LLAPI_MSG_ERROR, errno,
5112 "Cannot create volatile file '%s' in '%s'",
5113 filename + LUSTRE_VOLATILE_HDR_LEN,
5118 /* Unlink file in case this wasn't a Lustre filesystem and the
5119 * magic volatile filename wasn't handled as intended. The
5120 * effect is the same. If volatile open was supported then we
5121 * expect unlink() to return -ENOENT. */
5122 (void)unlink(file_path);
5124 /* Since we are returning successfully we restore errno (and
5125 * mask out possible EEXIST from open() and ENOENT from
5127 errno = saved_errno;
5133 * Swap the layouts between 2 file descriptors
5134 * the 2 files must be open for writing
5135 * first fd received the ioctl, second fd is passed as arg
5136 * this is assymetric but avoid use of root path for ioctl
5138 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5139 int gid, __u64 flags)
5141 struct lustre_swap_layouts lsl;
5146 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5147 rc = fstat(fd1, &st1);
5151 rc = fstat(fd2, &st2);
5156 lsl.sl_flags = flags;
5160 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5164 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5165 struct timeval tv1[2];
5166 struct timeval tv2[2];
5168 memset(tv1, 0, sizeof(tv1));
5169 memset(tv2, 0, sizeof(tv2));
5171 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5172 tv1[0].tv_sec = st1.st_atime;
5173 tv2[0].tv_sec = st2.st_atime;
5175 tv1[0].tv_sec = st2.st_atime;
5176 tv2[0].tv_sec = st1.st_atime;
5179 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5180 tv1[1].tv_sec = st1.st_mtime;
5181 tv2[1].tv_sec = st2.st_mtime;
5183 tv1[1].tv_sec = st2.st_mtime;
5184 tv2[1].tv_sec = st1.st_mtime;
5187 rc = futimes(fd1, tv1);
5191 rc = futimes(fd2, tv2);
5199 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5206 while (grp_id == 0);
5208 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5216 * Swap the layouts between 2 files
5217 * the 2 files are open in write
5219 int llapi_swap_layouts(const char *path1, const char *path2,
5220 __u64 dv1, __u64 dv2, __u64 flags)
5224 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5227 llapi_error(LLAPI_MSG_ERROR, rc,
5228 "error: cannot open '%s' for write", path1);
5232 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5235 llapi_error(LLAPI_MSG_ERROR, rc,
5236 "error: cannot open '%s' for write", path2);
5240 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5242 llapi_error(LLAPI_MSG_ERROR, rc,
5243 "error: cannot swap layout between '%s' and '%s'",
5254 * Attempt to open a file with Lustre file identifier \a fid
5255 * and return an open file descriptor.
5257 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5258 * \param[in] fid Lustre file identifier of file to open
5259 * \param[in] flags open() flags
5261 * \retval non-negative file descriptor on successful open
5262 * \retval -1 if an error occurred
5264 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5267 char mntdir[PATH_MAX];
5268 char path[PATH_MAX];
5271 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5275 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5276 return open(path, flags);
5282 * \param fd File to lock.
5283 * \param gid Group Identifier.
5285 * \retval 0 on success.
5286 * \retval -errno on failure.
5288 int llapi_group_lock(int fd, int gid)
5292 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5295 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5303 * \param fd File to unlock.
5304 * \param gid Group Identifier.
5306 * \retval 0 on success.
5307 * \retval -errno on failure.
5309 int llapi_group_unlock(int fd, int gid)
5313 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5316 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");