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)
133 if (liblustreapi_cmd != NULL) {
134 fprintf(stdout, "%s %s: ",
135 program_invocation_short_name,
138 fprintf(stdout, "%s: ", program_invocation_short_name);
141 vfprintf(stdout, fmt, ap);
144 static llapi_log_callback_t llapi_error_callback = error_callback_default;
145 static llapi_log_callback_t llapi_info_callback = info_callback_default;
148 /* llapi_error will preserve errno */
149 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
152 int tmp_errno = errno;
154 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
158 llapi_error_callback(level, abs(err), fmt, args);
163 /* llapi_printf will preserve errno */
164 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
167 int tmp_errno = errno;
169 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
173 llapi_info_callback(level, 0, fmt, args);
179 * Set a custom error logging function. Passing in NULL will reset the logging
180 * callback to its default value.
182 * This function returns the value of the old callback.
184 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
186 llapi_log_callback_t old = llapi_error_callback;
189 llapi_error_callback = cb;
191 llapi_error_callback = error_callback_default;
197 * Set a custom info logging function. Passing in NULL will reset the logging
198 * callback to its default value.
200 * This function returns the value of the old callback.
202 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
204 llapi_log_callback_t old = llapi_info_callback;
207 llapi_info_callback = cb;
209 llapi_info_callback = info_callback_default;
215 * size_units is to be initialized (or zeroed) by caller.
217 int llapi_parse_size(const char *optarg, unsigned long long *size,
218 unsigned long long *size_units, int bytes_spec)
221 char *argbuf = (char *)optarg;
222 unsigned long long frac = 0, frac_d = 1;
224 if (strncmp(optarg, "-", 1) == 0)
227 if (*size_units == 0)
230 *size = strtoull(argbuf, &end, 0);
231 if (end != NULL && *end == '.') {
235 frac = strtoull(argbuf, &end, 10);
236 /* count decimal places */
237 for (i = 0; i < (end - argbuf); i++)
242 if ((*end == 'b') && *(end + 1) == '\0' &&
243 (*size & (~0ULL << (64 - 9))) == 0 &&
245 *size_units = 1 << 9;
246 } else if ((*end == 'b') &&
247 *(end + 1) == '\0' &&
250 } else if ((*end == 'k' || *end == 'K') &&
251 *(end + 1) == '\0' &&
252 (*size & (~0ULL << (64 - 10))) == 0) {
253 *size_units = 1 << 10;
254 } else if ((*end == 'm' || *end == 'M') &&
255 *(end + 1) == '\0' &&
256 (*size & (~0ULL << (64 - 20))) == 0) {
257 *size_units = 1 << 20;
258 } else if ((*end == 'g' || *end == 'G') &&
259 *(end + 1) == '\0' &&
260 (*size & (~0ULL << (64 - 30))) == 0) {
261 *size_units = 1 << 30;
262 } else if ((*end == 't' || *end == 'T') &&
263 *(end + 1) == '\0' &&
264 (*size & (~0ULL << (64 - 40))) == 0) {
265 *size_units = 1ULL << 40;
266 } else if ((*end == 'p' || *end == 'P') &&
267 *(end + 1) == '\0' &&
268 (*size & (~0ULL << (64 - 50))) == 0) {
269 *size_units = 1ULL << 50;
270 } else if ((*end == 'e' || *end == 'E') &&
271 *(end + 1) == '\0' &&
272 (*size & (~0ULL << (64 - 60))) == 0) {
273 *size_units = 1ULL << 60;
278 *size = *size * *size_units + frac * *size_units / frac_d;
283 int llapi_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
285 struct obd_ioctl_data *overlay;
288 data->ioc_len = obd_ioctl_packlen(data);
289 data->ioc_version = OBD_IOCTL_VERSION;
291 if (*pbuf != NULL && data->ioc_len > max_len) {
292 fprintf(stderr, "pbuf = %p, ioc_len = %u, max_len = %d\n",
293 *pbuf, data->ioc_len, max_len);
298 *pbuf = malloc(data->ioc_len);
303 overlay = (struct obd_ioctl_data *)*pbuf;
304 memcpy(*pbuf, data, sizeof(*data));
306 ptr = overlay->ioc_bulk;
307 if (data->ioc_inlbuf1) {
308 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
309 ptr += cfs_size_round(data->ioc_inllen1);
312 if (data->ioc_inlbuf2) {
313 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
314 ptr += cfs_size_round(data->ioc_inllen2);
317 if (data->ioc_inlbuf3) {
318 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
319 ptr += cfs_size_round(data->ioc_inllen3);
322 if (data->ioc_inlbuf4) {
323 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
324 ptr += cfs_size_round(data->ioc_inllen4);
330 int llapi_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
332 struct obd_ioctl_data *overlay;
338 overlay = (struct obd_ioctl_data *)pbuf;
340 /* Preserve the caller's buffer pointers */
341 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
342 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
343 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
344 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
346 memcpy(data, pbuf, sizeof(*data));
348 ptr = overlay->ioc_bulk;
349 if (data->ioc_inlbuf1) {
350 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
351 ptr += cfs_size_round(data->ioc_inllen1);
354 if (data->ioc_inlbuf2) {
355 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
356 ptr += cfs_size_round(data->ioc_inllen2);
359 if (data->ioc_inlbuf3) {
360 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
361 ptr += cfs_size_round(data->ioc_inllen3);
364 if (data->ioc_inlbuf4) {
365 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
366 ptr += cfs_size_round(data->ioc_inllen4);
372 /* XXX: llapi_xxx() functions return negative values upon failure */
374 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
375 int stripe_count, int stripe_pattern)
379 /* 64 KB is the largest common page size I'm aware of (on ia64), but
380 * check the local page size just in case. */
381 page_size = LOV_MIN_STRIPE_SIZE;
382 if (getpagesize() > page_size) {
383 page_size = getpagesize();
384 llapi_err_noerrno(LLAPI_MSG_WARN,
385 "warning: your page size (%u) is "
386 "larger than expected (%u)", page_size,
387 LOV_MIN_STRIPE_SIZE);
389 if (!llapi_stripe_size_is_aligned(stripe_size)) {
391 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
392 "must be an even multiple of %d bytes",
393 stripe_size, page_size);
396 if (!llapi_stripe_index_is_valid(stripe_offset)) {
398 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
402 if (!llapi_stripe_count_is_valid(stripe_count)) {
404 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
408 if (llapi_stripe_size_is_too_big(stripe_size)) {
410 llapi_error(LLAPI_MSG_ERROR, rc,
411 "warning: stripe size 4G or larger "
412 "is not currently supported and would wrap");
418 int llapi_dir_stripe_limit_check(int stripe_offset, int stripe_count,
423 if (!llapi_dir_stripe_index_is_valid(stripe_offset)) {
425 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
429 if (!llapi_dir_stripe_count_is_valid(stripe_count)) {
431 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
436 if (!llapi_dir_hash_type_is_valid(hash_type)) {
438 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad hash type %d",
446 * Trim a trailing newline from a string, if it exists.
448 int llapi_chomp_string(char *buf)
464 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
466 static int get_param_lov(const char *path, const char *param,
467 char *buf, size_t buf_size)
469 struct obd_uuid uuid;
472 rc = llapi_file_get_lov_uuid(path, &uuid);
476 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
481 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
483 static int get_param_lmv(const char *path, const char *param,
484 char *buf, size_t buf_size)
486 struct obd_uuid uuid;
489 rc = llapi_file_get_lmv_uuid(path, &uuid);
493 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
497 static int get_mds_md_size(const char *path)
499 char buf[PATH_MAX], inst[PATH_MAX];
500 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
503 rc = llapi_getname(path, inst, sizeof(inst));
507 /* Get the max ea size from llite parameters. */
508 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
509 "max_easize", buf, sizeof(buf));
515 return rc > 0 ? rc : md_size;
518 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
520 return get_param_lmv(path, "uuid", buf, bufsize);
524 * if pool is NULL, search tgtname in target_obd
525 * if pool is not NULL:
526 * if pool not found returns errno < 0
527 * if tgtname is NULL, returns 1 if pool is not empty and 0 if pool empty
528 * if tgtname is not NULL, returns 1 if OST is in pool and 0 if not
530 int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt)
532 char buffer[PATH_MAX];
538 /* You need one or the other */
539 if (poolname == NULL && fsname == NULL)
543 len = strlen(tgtname);
545 if (poolname == NULL && len == 0)
548 /* Search by poolname and fsname if is not NULL */
549 if (poolname != NULL) {
550 rc = poolpath(¶m, fsname, NULL);
552 snprintf(buffer, sizeof(buffer), "%s/%s",
553 param.gl_pathv[0], poolname);
555 } else if (fsname != NULL) {
556 rc = get_lustre_param_path(is_mdt ? "lmv" : "lov", fsname,
558 "target_obd", ¶m);
560 strncpy(buffer, param.gl_pathv[0],
566 cfs_free_param_data(¶m);
570 fd = fopen(buffer, "r");
574 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
575 if (poolname == NULL) {
577 /* Search for an tgtname in the list of targets
578 * Line format is IDX: fsname-OST/MDTxxxx_UUID STATUS */
579 ptr = strchr(buffer, ' ');
581 (strncmp(ptr + 1, tgtname, len) == 0)) {
586 /* Search for an tgtname in a pool,
587 * (or an existing non-empty pool if no tgtname) */
588 if ((tgtname == NULL) ||
589 (strncmp(buffer, tgtname, len) == 0)) {
599 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
601 return llapi_search_tgt(fsname, poolname, ostname, false);
605 * Open a Lustre file.
607 * \param name the name of the file to be opened
608 * \param flags access mode, see flags in open(2)
609 * \param mode permission of the file if it is created, see mode in open(2)
610 * \param param stripe pattern of the newly created file
612 * \retval file descriptor of opened file
613 * \retval negative errno on failure
615 int llapi_file_open_param(const char *name, int flags, mode_t mode,
616 const struct llapi_stripe_param *param)
618 char fsname[MAX_OBD_NAME + 1] = { 0 };
619 char *pool_name = param->lsp_pool;
620 struct lov_user_md *lum = NULL;
621 size_t lum_size = sizeof(*lum);
624 /* Make sure we are on a Lustre file system */
625 rc = llapi_search_fsname(name, fsname);
627 llapi_error(LLAPI_MSG_ERROR, rc,
628 "'%s' is not on a Lustre filesystem",
633 /* Check if the stripe pattern is sane. */
634 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
635 param->lsp_stripe_offset,
636 param->lsp_stripe_count,
637 param->lsp_stripe_pattern);
641 /* Make sure we have a good pool */
642 if (pool_name != NULL) {
643 /* in case user gives the full pool name <fsname>.<poolname>,
644 * strip the fsname */
645 char *ptr = strchr(pool_name, '.');
648 if (strcmp(pool_name, fsname) != 0) {
650 llapi_err_noerrno(LLAPI_MSG_ERROR,
651 "Pool '%s' is not on filesystem '%s'",
658 /* Make sure the pool exists and is non-empty */
659 rc = llapi_search_ost(fsname, pool_name, NULL);
661 char *err = rc == 0 ? "has no OSTs" : "does not exist";
663 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
664 fsname, pool_name, err);
668 lum_size = sizeof(struct lov_user_md_v3);
671 /* sanity check of target list */
672 if (param->lsp_is_specific) {
673 char ostname[MAX_OBD_NAME + 1];
677 for (i = 0; i < param->lsp_stripe_count; i++) {
678 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
679 fsname, param->lsp_osts[i]);
680 rc = llapi_search_ost(fsname, pool_name, ostname);
685 llapi_error(LLAPI_MSG_ERROR, rc,
686 "%s: cannot find OST %s in %s",
693 /* Make sure stripe offset is in OST list. */
694 if (param->lsp_osts[i] == param->lsp_stripe_offset)
698 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
699 "%s: stripe offset '%d' is not in the "
701 __func__, param->lsp_stripe_offset);
705 lum_size = lov_user_md_size(param->lsp_stripe_count,
706 LOV_USER_MAGIC_SPECIFIC);
709 lum = calloc(1, lum_size);
714 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
716 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
717 flags = O_DIRECTORY | O_RDONLY;
724 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
729 /* Initialize IOCTL striping pattern structure */
730 lum->lmm_magic = LOV_USER_MAGIC_V1;
731 lum->lmm_pattern = param->lsp_stripe_pattern;
732 lum->lmm_stripe_size = param->lsp_stripe_size;
733 lum->lmm_stripe_count = param->lsp_stripe_count;
734 lum->lmm_stripe_offset = param->lsp_stripe_offset;
735 if (pool_name != NULL) {
736 struct lov_user_md_v3 *lumv3 = (void *)lum;
738 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
739 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
741 if (param->lsp_is_specific) {
742 struct lov_user_md_v3 *lumv3 = (void *)lum;
745 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
746 if (pool_name == NULL) {
747 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
748 * OST list, therefore if pool is not specified we have
749 * to pack a null pool name for placeholder. */
750 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
753 for (i = 0; i < param->lsp_stripe_count; i++)
754 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
757 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
758 char *errmsg = "stripe already set";
761 if (errno != EEXIST && errno != EALREADY)
762 errmsg = strerror(errno);
764 llapi_err_noerrno(LLAPI_MSG_ERROR,
765 "error on ioctl %#jx for '%s' (%d): %s",
766 (uintmax_t)LL_IOC_LOV_SETSTRIPE, name, fd,
778 int llapi_file_open_pool(const char *name, int flags, int mode,
779 unsigned long long stripe_size, int stripe_offset,
780 int stripe_count, int stripe_pattern, char *pool_name)
782 const struct llapi_stripe_param param = {
783 .lsp_stripe_size = stripe_size,
784 .lsp_stripe_count = stripe_count,
785 .lsp_stripe_pattern = stripe_pattern,
786 .lsp_stripe_offset = stripe_offset,
787 .lsp_pool = pool_name
789 return llapi_file_open_param(name, flags, mode, ¶m);
792 int llapi_file_open(const char *name, int flags, int mode,
793 unsigned long long stripe_size, int stripe_offset,
794 int stripe_count, int stripe_pattern)
796 return llapi_file_open_pool(name, flags, mode, stripe_size,
797 stripe_offset, stripe_count,
798 stripe_pattern, NULL);
801 int llapi_file_create(const char *name, unsigned long long stripe_size,
802 int stripe_offset, int stripe_count, int stripe_pattern)
806 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
807 stripe_offset, stripe_count, stripe_pattern,
816 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
817 int stripe_offset, int stripe_count,
818 int stripe_pattern, char *pool_name)
822 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
823 stripe_offset, stripe_count, stripe_pattern,
832 static int verify_dir_param(const char *name,
833 const struct llapi_stripe_param *param)
835 char fsname[MAX_OBD_NAME + 1] = { 0 };
836 char *pool_name = param->lsp_pool;
839 /* Make sure we are on a Lustre file system */
840 rc = llapi_search_fsname(name, fsname);
842 llapi_error(LLAPI_MSG_ERROR, rc,
843 "'%s' is not on a Lustre filesystem",
848 /* Check if the stripe pattern is sane. */
849 rc = llapi_dir_stripe_limit_check(param->lsp_stripe_offset,
850 param->lsp_stripe_count,
851 param->lsp_stripe_pattern);
855 /* Make sure we have a good pool */
856 if (pool_name != NULL) {
857 /* in case user gives the full pool name <fsname>.<poolname>,
858 * strip the fsname */
859 char *ptr = strchr(pool_name, '.');
863 if (strcmp(pool_name, fsname) != 0) {
865 llapi_err_noerrno(LLAPI_MSG_ERROR,
866 "Pool '%s' is not on filesystem '%s'",
873 /* Make sure the pool exists and is non-empty */
874 rc = llapi_search_tgt(fsname, pool_name, NULL, true);
876 char *err = rc == 0 ? "has no OSTs" : "does not exist";
878 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
879 fsname, pool_name, err);
884 /* sanity check of target list */
885 if (param->lsp_is_specific) {
886 char mdtname[MAX_OBD_NAME + 1];
890 for (i = 0; i < param->lsp_stripe_count; i++) {
891 snprintf(mdtname, sizeof(mdtname), "%s-MDT%04x_UUID",
892 fsname, param->lsp_tgts[i]);
893 rc = llapi_search_tgt(fsname, pool_name, mdtname, true);
898 llapi_error(LLAPI_MSG_ERROR, rc,
899 "%s: cannot find MDT %s in %s",
906 /* Make sure stripe offset is in MDT list. */
907 if (param->lsp_tgts[i] == param->lsp_stripe_offset)
911 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
912 "%s: stripe offset '%d' is not in the "
914 __func__, param->lsp_stripe_offset);
922 static inline void param2lmu(struct lmv_user_md *lmu,
923 const struct llapi_stripe_param *param)
925 lmu->lum_magic = param->lsp_is_specific ? LMV_USER_MAGIC_SPECIFIC :
927 lmu->lum_stripe_count = param->lsp_stripe_count;
928 lmu->lum_stripe_offset = param->lsp_stripe_offset;
929 lmu->lum_hash_type = param->lsp_stripe_pattern;
930 if (param->lsp_pool != NULL)
931 strncpy(lmu->lum_pool_name, param->lsp_pool, LOV_MAXPOOLNAME);
932 if (param->lsp_is_specific) {
935 for (i = 0; i < param->lsp_stripe_count; i++)
936 lmu->lum_objects[i].lum_mds = param->lsp_tgts[i];
940 int llapi_dir_set_default_lmv(const char *name,
941 const struct llapi_stripe_param *param)
943 struct lmv_user_md lmu = { 0 };
947 rc = verify_dir_param(name, param);
951 /* TODO: default lmv doesn't support specific targets yet */
952 if (param->lsp_is_specific)
955 param2lmu(&lmu, param);
957 fd = open(name, O_DIRECTORY | O_RDONLY);
960 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
964 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lmu);
966 char *errmsg = "stripe already set";
968 if (errno != EEXIST && errno != EALREADY)
969 errmsg = strerror(errno);
971 llapi_err_noerrno(LLAPI_MSG_ERROR,
972 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
979 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
980 int stripe_count, int stripe_pattern,
981 const char *pool_name)
983 const struct llapi_stripe_param param = {
984 .lsp_stripe_count = stripe_count,
985 .lsp_stripe_offset = stripe_offset,
986 .lsp_stripe_pattern = stripe_pattern,
987 .lsp_pool = (char *)pool_name
990 return llapi_dir_set_default_lmv(name, ¶m);
994 * Create a Lustre directory.
996 * \param name the name of the directory to be created
997 * \param mode permission of the file if it is created, see mode in open(2)
998 * \param param stripe pattern of the newly created directory
1000 * \retval 0 on success
1001 * \retval negative errno on failure
1003 int llapi_dir_create_param(const char *name, mode_t mode,
1004 const struct llapi_stripe_param *param)
1006 struct lmv_user_md *lmu = NULL;
1007 size_t lmu_size = sizeof(*lmu);
1008 struct obd_ioctl_data data = { 0 };
1011 char *dirpath = NULL;
1012 char *namepath = NULL;
1017 rc = verify_dir_param(name, param);
1021 if (param->lsp_is_specific)
1022 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1023 LMV_USER_MAGIC_SPECIFIC);
1025 lmu = calloc(1, lmu_size);
1029 dirpath = strdup(name);
1035 namepath = strdup(name);
1042 param2lmu(lmu, param);
1044 filename = basename(namepath);
1045 dir = dirname(dirpath);
1047 data.ioc_inlbuf1 = (char *)filename;
1048 data.ioc_inllen1 = strlen(filename) + 1;
1049 data.ioc_inlbuf2 = (char *)lmu;
1050 data.ioc_inllen2 = lmu_size;
1051 data.ioc_type = mode;
1052 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
1054 llapi_error(LLAPI_MSG_ERROR, rc,
1055 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1060 fd = open(dir, O_DIRECTORY | O_RDONLY);
1063 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1067 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1068 char *errmsg = "stripe already set";
1070 if (errno != EEXIST && errno != EALREADY)
1071 errmsg = strerror(errno);
1073 llapi_err_noerrno(LLAPI_MSG_ERROR,
1074 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
1086 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1087 int stripe_count, int stripe_pattern,
1088 const char *pool_name)
1090 const struct llapi_stripe_param param = {
1091 .lsp_stripe_count = stripe_count,
1092 .lsp_stripe_offset = stripe_offset,
1093 .lsp_stripe_pattern = stripe_pattern,
1094 .lsp_pool = (char *)pool_name
1097 return llapi_dir_create_param(name, mode, ¶m);
1100 int llapi_direntry_remove(char *dname)
1102 char *dirpath = NULL;
1103 char *namepath = NULL;
1109 dirpath = strdup(dname);
1110 namepath = strdup(dname);
1111 if (!dirpath || !namepath)
1114 filename = basename(namepath);
1116 dir = dirname(dirpath);
1118 fd = open(dir, O_DIRECTORY | O_RDONLY);
1121 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1126 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1127 char *errmsg = strerror(errno);
1128 llapi_err_noerrno(LLAPI_MSG_ERROR,
1129 "error on ioctl %#jx for '%s' (%d): %s",
1130 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1142 * Find the fsname, the full path, and/or an open fd.
1143 * Either the fsname or path must not be NULL
1145 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1148 char buf[PATH_MAX], mntdir[PATH_MAX];
1149 char *ptr, *ptr_end;
1151 int idx = 0, len = 0, mntlen, fd;
1154 /* get the mount point */
1155 fp = setmntent(PROC_MOUNTS, "r");
1158 llapi_error(LLAPI_MSG_ERROR, rc,
1159 "cannot retrieve filesystem mount point");
1163 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1166 if (!llapi_is_lustre_mnt(&mnt))
1169 if ((want & WANT_INDEX) && (idx++ != index))
1172 mntlen = strlen(mnt.mnt_dir);
1173 ptr = strchr(mnt.mnt_fsname, '/');
1174 while (ptr && *ptr == '/')
1176 /* thanks to the call to llapi_is_lustre_mnt() above,
1177 * we are sure that mnt.mnt_fsname contains ":/",
1178 * so ptr should never be NULL */
1182 while (*ptr_end != '/' && *ptr_end != '\0')
1185 /* Check the fsname for a match, if given */
1186 if (!(want & WANT_FSNAME) && fsname != NULL &&
1187 (strlen(fsname) > 0) &&
1188 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1191 /* If the path isn't set return the first one we find */
1192 if (path == NULL || strlen(path) == 0) {
1193 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1194 mntdir[strlen(mnt.mnt_dir)] = '\0';
1195 if ((want & WANT_FSNAME) && fsname != NULL) {
1196 strncpy(fsname, ptr, ptr_end - ptr);
1197 fsname[ptr_end - ptr] = '\0';
1201 /* Otherwise find the longest matching path */
1202 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1203 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1204 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1205 mntdir[strlen(mnt.mnt_dir)] = '\0';
1207 if ((want & WANT_FSNAME) && fsname != NULL) {
1208 strncpy(fsname, ptr, ptr_end - ptr);
1209 fsname[ptr_end - ptr] = '\0';
1218 if ((want & WANT_PATH) && path != NULL) {
1219 strncpy(path, mntdir, strlen(mntdir));
1220 path[strlen(mntdir)] = '\0';
1222 if (want & WANT_FD) {
1223 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1226 llapi_error(LLAPI_MSG_ERROR, rc,
1227 "cannot open '%s': %s", mntdir,
1234 } else if (want & WANT_ERROR)
1235 llapi_err_noerrno(LLAPI_MSG_ERROR,
1236 "'%s' not on a mounted Lustre filesystem",
1237 (want & WANT_PATH) ? fsname : path);
1242 * search lustre mounts
1244 * Calling this function will return to the user the mount point, mntdir, and
1245 * the file system name, fsname, if the user passed a buffer to this routine.
1247 * The user inputs are pathname and index. If the pathname is supplied then
1248 * the value of the index will be ignored. The pathname will return data if
1249 * the pathname is located on a lustre mount. Index is used to pick which
1250 * mount point you want in the case of multiple mounted lustre file systems.
1251 * See function lfs_osts in lfs.c for an example of the index use.
1253 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1256 int want = WANT_PATH, idx = -1;
1258 if (!pathname || pathname[0] == '\0') {
1262 strcpy(mntdir, pathname);
1265 want |= WANT_FSNAME;
1266 return get_root_path(want, fsname, NULL, mntdir, idx);
1269 /* Given a path, find the corresponding Lustre fsname */
1270 int llapi_search_fsname(const char *pathname, char *fsname)
1275 path = realpath(pathname, NULL);
1277 char buf[PATH_MAX], *ptr;
1280 if (pathname[0] != '/') {
1281 /* Need an absolute path, but realpath() only works for
1282 * pathnames that actually exist. We go through the
1283 * extra hurdle of dirname(getcwd() + pathname) in
1284 * case the relative pathname contains ".." in it. */
1285 if (getcwd(buf, sizeof(buf) - 2) == NULL) {
1287 llapi_error(LLAPI_MSG_ERROR, rc,
1288 "cannot get current working directory");
1291 rc = strlcat(buf, "/", sizeof(buf));
1292 if (rc >= sizeof(buf)) {
1294 llapi_error(LLAPI_MSG_ERROR, rc,
1295 "invalid parent path '%s'",
1300 rc = strlcat(buf, pathname, sizeof(buf));
1301 if (rc >= sizeof(buf)) {
1303 llapi_error(LLAPI_MSG_ERROR, rc,
1304 "invalid path '%s'", pathname);
1307 path = realpath(buf, NULL);
1309 ptr = strrchr(buf, '/');
1311 llapi_error(LLAPI_MSG_ERROR |
1312 LLAPI_MSG_NO_ERRNO, 0,
1313 "cannot resolve path '%s'",
1318 path = realpath(buf, NULL);
1321 llapi_error(LLAPI_MSG_ERROR, rc,
1322 "cannot resolve path '%s'",
1328 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1333 int llapi_search_rootpath(char *pathname, const char *fsname)
1335 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1338 int llapi_getname(const char *path, char *buf, size_t size)
1340 struct obd_uuid uuid_buf;
1341 char *uuid = uuid_buf.uuid;
1344 memset(&uuid_buf, 0, sizeof(uuid_buf));
1345 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1349 /* We want to turn lustre-clilov-ffff88002738bc00 into
1350 * lustre-ffff88002738bc00. */
1352 nr = snprintf(buf, size, "%.*s-%s",
1353 (int) (strlen(uuid) - 24), uuid,
1354 uuid + strlen(uuid) - 16);
1363 * Get the list of pool members.
1364 * \param poolname string of format \<fsname\>.\<poolname\>
1365 * \param members caller-allocated array of char*
1366 * \param list_size size of the members array
1367 * \param buffer caller-allocated buffer for storing OST names
1368 * \param buffer_size size of the buffer
1370 * \return number of members retrieved for this pool
1371 * \retval -error failure
1373 int llapi_get_poolmembers(const char *poolname, char **members,
1374 int list_size, char *buffer, int buffer_size)
1376 char fsname[PATH_MAX];
1385 /* name is FSNAME.POOLNAME */
1386 if (strlen(poolname) >= sizeof(fsname))
1388 strlcpy(fsname, poolname, sizeof(fsname));
1389 pool = strchr(fsname, '.');
1396 rc = poolpath(&pathname, fsname, NULL);
1398 llapi_error(LLAPI_MSG_ERROR, rc,
1399 "Lustre filesystem '%s' not found",
1404 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1405 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1406 cfs_free_param_data(&pathname);
1407 if (rc >= sizeof(buf))
1409 fd = fopen(buf, "r");
1412 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1417 while (fgets(buf, sizeof(buf), fd) != NULL) {
1418 if (nb_entries >= list_size) {
1422 buf[sizeof(buf) - 1] = '\0';
1424 tmp = strchr(buf, '\n');
1427 if (used + strlen(buf) + 1 > buffer_size) {
1432 strcpy(buffer + used, buf);
1433 members[nb_entries] = buffer + used;
1434 used += strlen(buf) + 1;
1444 * Get the list of pools in a filesystem.
1445 * \param name filesystem name or path
1446 * \param poollist caller-allocated array of char*
1447 * \param list_size size of the poollist array
1448 * \param buffer caller-allocated buffer for storing pool names
1449 * \param buffer_size size of the buffer
1451 * \return number of pools retrieved for this filesystem
1452 * \retval -error failure
1454 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1455 char *buffer, int buffer_size)
1457 char rname[PATH_MAX];
1462 struct dirent *pool;
1464 unsigned int nb_entries = 0;
1465 unsigned int used = 0;
1468 /* initialize output array */
1469 for (i = 0; i < list_size; i++)
1472 /* is name a pathname ? */
1473 ptr = strchr(name, '/');
1475 /* only absolute pathname is supported */
1479 if (!realpath(name, rname)) {
1481 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1486 fsname = strdup(rname);
1490 rc = poolpath(&pathname, NULL, rname);
1492 /* name is FSNAME */
1493 fsname = strdup(name);
1496 rc = poolpath(&pathname, fsname, NULL);
1499 llapi_error(LLAPI_MSG_ERROR, rc,
1500 "Lustre filesystem '%s' not found", name);
1504 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1505 dir = opendir(pathname.gl_pathv[0]);
1508 llapi_error(LLAPI_MSG_ERROR, rc,
1509 "Could not open pool list for '%s'",
1516 pool = readdir(dir);
1522 /* ignore . and .. */
1523 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1526 /* check output bounds */
1527 if (nb_entries >= list_size) {
1532 /* +2 for '.' and final '\0' */
1533 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1539 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1540 poollist[nb_entries] = buffer + used;
1541 used += strlen(pool->d_name) + strlen(fsname) + 2;
1547 llapi_error(LLAPI_MSG_ERROR, rc,
1548 "Error reading pool list for '%s'", name);
1551 cfs_free_param_data(&pathname);
1554 return rc != 0 ? rc : nb_entries;
1557 /* wrapper for lfs.c and obd.c */
1558 int llapi_poollist(const char *name)
1560 /* list of pool names (assume that pool count is smaller
1562 char **list, *buffer = NULL, *fsname = (char *)name;
1563 char *poolname = NULL, *tmp = NULL, data[16];
1564 enum param_filter type = FILTER_BY_PATH;
1565 int obdcount, bufsize, rc, nb, i;
1570 if (name[0] != '/') {
1571 fsname = strdup(name);
1575 poolname = strchr(fsname, '.');
1578 type = FILTER_BY_FS_NAME;
1581 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1582 data, sizeof(data));
1585 obdcount = atoi(data);
1587 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1588 * and also an array to store the pointers for all that
1589 * allocated space. */
1591 bufsize = sizeof(struct obd_uuid) * obdcount;
1592 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1593 if (buffer == NULL) {
1597 list = (char **) (buffer + bufsize);
1600 /* name is a path or fsname */
1601 nb = llapi_get_poollist(name, list, obdcount,
1604 /* name is a pool name (<fsname>.<poolname>) */
1605 nb = llapi_get_poolmembers(name, list, obdcount,
1609 if (nb == -EOVERFLOW) {
1612 goto retry_get_pools;
1615 for (i = 0; i < nb; i++)
1616 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1617 rc = (nb < 0 ? nb : 0);
1621 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1626 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1627 void *data, struct dirent64 *de);
1629 #define OBD_NOT_FOUND (-1)
1631 static int common_param_init(struct find_param *param, char *path)
1633 int lum_size = get_mds_md_size(path);
1635 if (lum_size < PATH_MAX + 1)
1636 lum_size = PATH_MAX + 1;
1638 param->fp_lum_size = lum_size;
1639 param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
1640 if (param->fp_lmd == NULL) {
1641 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1642 "error: allocation of %zu bytes for ioctl",
1643 sizeof(lstat_t) + param->fp_lum_size);
1647 param->fp_lmv_stripe_count = 256;
1648 param->fp_lmv_md = calloc(1,
1649 lmv_user_md_size(param->fp_lmv_stripe_count,
1651 if (param->fp_lmv_md == NULL) {
1652 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1653 "error: allocation of %d bytes for ioctl",
1654 lmv_user_md_size(param->fp_lmv_stripe_count,
1659 param->fp_got_uuids = 0;
1660 param->fp_obd_indexes = NULL;
1661 param->fp_obd_index = OBD_NOT_FOUND;
1662 if (!param->fp_migrate)
1663 param->fp_mdt_index = OBD_NOT_FOUND;
1667 static void find_param_fini(struct find_param *param)
1669 if (param->fp_obd_indexes)
1670 free(param->fp_obd_indexes);
1673 free(param->fp_lmd);
1675 if (param->fp_lmv_md)
1676 free(param->fp_lmv_md);
1679 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1680 struct dirent64 *de)
1682 struct find_param *param = data;
1688 /* set errno upon failure */
1689 static DIR *opendir_parent(const char *path)
1695 path_copy = strdup(path);
1696 if (path_copy == NULL)
1699 parent_path = dirname(path_copy);
1700 parent = opendir(parent_path);
1706 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1711 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1712 if (param->fp_get_default_lmv)
1713 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1715 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1717 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1718 if (errno == E2BIG && ret != 0) {
1722 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1723 if (stripe_count <= param->fp_lmv_stripe_count)
1726 free(param->fp_lmv_md);
1727 param->fp_lmv_stripe_count = stripe_count;
1728 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1729 param->fp_lmv_md = malloc(lmv_size);
1730 if (param->fp_lmv_md == NULL) {
1731 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1732 "error: allocation of %d bytes for ioctl",
1733 lmv_user_md_size(param->fp_lmv_stripe_count,
1742 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1743 struct lov_user_mds_data *lmd, int lumlen)
1745 lstat_t *st = &lmd->lmd_st;
1748 if (parent == NULL && dir == NULL)
1752 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1753 } else if (parent) {
1754 char *fname = strrchr(path, '/');
1756 /* To avoid opening, locking, and closing each file on the
1757 * client if that is not needed. The GETFILEINFO ioctl can
1758 * be done on the patent dir with a single open for all
1759 * files in that directory, and it also doesn't pollute the
1760 * client dcache with millions of dentries when traversing
1761 * a large filesystem. */
1762 fname = (fname == NULL ? path : fname + 1);
1763 /* retrieve needed file info */
1764 strlcpy((char *)lmd, fname, lumlen);
1765 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1769 if (errno == ENOTTY) {
1770 /* ioctl is not supported, it is not a lustre fs.
1771 * Do the regular lstat(2) instead. */
1772 ret = lstat_f(path, st);
1775 llapi_error(LLAPI_MSG_ERROR, ret,
1776 "error: %s: lstat failed for %s",
1779 } else if (errno == ENOENT) {
1781 llapi_error(LLAPI_MSG_WARN, ret,
1782 "warning: %s: %s does not exist",
1784 } else if (errno != EISDIR) {
1786 llapi_error(LLAPI_MSG_ERROR, ret,
1787 "%s ioctl failed for %s.",
1788 dir ? "LL_IOC_MDC_GETINFO" :
1789 "IOC_MDC_GETFILEINFO", path);
1792 llapi_error(LLAPI_MSG_ERROR, ret,
1793 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1800 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1801 semantic_func_t sem_init,
1802 semantic_func_t sem_fini, void *data,
1803 struct dirent64 *de)
1805 struct find_param *param = (struct find_param *)data;
1806 struct dirent64 *dent;
1814 if (!d && errno != ENOTDIR) {
1816 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1819 } else if (!d && !parent) {
1820 /* ENOTDIR. Open the parent dir. */
1821 p = opendir_parent(path);
1828 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1834 while ((dent = readdir64(d)) != NULL) {
1837 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1841 if ((len + dent->d_reclen + 2) > size) {
1842 llapi_err_noerrno(LLAPI_MSG_ERROR,
1843 "error: %s: string buffer 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_MIRROR_ID) {
2931 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2932 if (verbose & ~VERBOSE_MIRROR_ID)
2933 llapi_printf(LLAPI_MSG_NORMAL,
2934 "%4slcme_mirror_id: ", " ");
2935 if (entry->lcme_id != LCME_ID_INVAL)
2936 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2937 mirror_id_of(entry->lcme_id));
2939 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2943 if (verbose & VERBOSE_COMP_FLAGS) {
2944 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2945 if (verbose & ~VERBOSE_COMP_FLAGS)
2946 llapi_printf(LLAPI_MSG_NORMAL,
2947 "%4slcme_flags: ", " ");
2948 lcme_flags2str(entry->lcme_flags);
2952 if (verbose & VERBOSE_COMP_START) {
2953 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2954 if (verbose & ~VERBOSE_COMP_START)
2955 llapi_printf(LLAPI_MSG_NORMAL,
2956 "%4slcme_extent.e_start: ", " ");
2957 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2958 entry->lcme_extent.e_start);
2962 if (verbose & VERBOSE_COMP_END) {
2963 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2964 if (verbose & ~VERBOSE_COMP_END)
2965 llapi_printf(LLAPI_MSG_NORMAL,
2966 "%4slcme_extent.e_end: ", " ");
2967 if (entry->lcme_extent.e_end == LUSTRE_EOF)
2968 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
2970 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2971 entry->lcme_extent.e_end);
2976 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2977 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2978 } else if (verbose & VERBOSE_DETAIL) {
2979 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2980 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
2981 " ", entry->lcme_offset);
2982 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
2983 " ", entry->lcme_size);
2984 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2986 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2990 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2991 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2993 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2994 * The table below gives the answers for the specified parameters (value and
2995 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2996 * --------------------------------------
2997 * 1 | file > limit; sign > 0 | -1 / -1 |
2998 * 2 | file = limit; sign > 0 | -1 / -1 |
2999 * 3 | file < limit; sign > 0 | ? / 1 |
3000 * 4 | file > limit; sign = 0 | -1 / -1 |
3001 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3002 * 6 | file < limit; sign = 0 | ? / -1 |
3003 * 7 | file > limit; sign < 0 | 1 / 1 |
3004 * 8 | file = limit; sign < 0 | ? / -1 |
3005 * 9 | file < limit; sign < 0 | ? / -1 |
3006 * --------------------------------------
3007 * Note: 5th actually means that the value is within the interval
3008 * (limit - margin, limit]. */
3009 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3010 int sign, int negopt, unsigned long long margin,
3016 /* Drop the fraction of margin (of days). */
3017 if (file + margin <= limit)
3019 } else if (sign == 0) {
3020 if (file <= limit && file + margin > limit)
3022 else if (file + margin <= limit)
3024 } else if (sign < 0) {
3031 return negopt ? ~ret + 1 : ret;
3034 static inline struct lov_user_md *
3035 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3037 return (struct lov_user_md *)((char *)comp_v1 +
3038 comp_v1->lcm_entries[ent_idx].lcme_offset);
3041 static inline struct lov_user_ost_data_v1 *
3042 lov_v1v3_objects(struct lov_user_md *v1)
3044 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3045 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3047 return v1->lmm_objects;
3051 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3053 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3054 strlcpy(pool_name, ((struct lov_user_md_v3 *)v1)->lmm_pool_name,
3057 pool_name[0] = '\0';
3061 print_last_init_comp(struct find_param *param)
3063 /* print all component info */
3064 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3067 /* print specific component info */
3068 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3069 param->fp_check_comp_start || param->fp_check_comp_end)
3075 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3079 if (param->fp_comp_end == LUSTRE_EOF) {
3080 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3081 match = end == LUSTRE_EOF ? 1 : -1;
3082 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3083 match = end == LUSTRE_EOF ? -1 : 1;
3084 else /* at least EOF */
3086 if (param->fp_exclude_comp_end)
3089 unsigned long long margin;
3091 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3092 match = find_value_cmp(end, param->fp_comp_end,
3093 param->fp_comp_end_sign,
3094 param->fp_exclude_comp_end, margin, 0);
3101 * An example of "getstripe -v" for a two components PFL file:
3104 * lcm_magic: 0x0BD60BD0
3108 * lcm_entry_count: 2
3112 * lcme_extent.e_start: 0
3113 * lcme_extent.e_end: 1048576
3117 * lmm_magic: 0x0BD10BD0
3118 * lmm_seq: 0x200000401
3119 * lmm_object_id: 0x1
3120 * lmm_fid: [0x200000401:0x1:0x0]
3121 * lmm_stripe_count: 1
3122 * lmm_stripe_size: 1048576
3123 * lmm_pattern: raid0
3125 * lmm_stripe_offset: 0
3127 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3131 * lcme_extent.e_start: 1048576
3132 * lcme_extent.e_end: EOF
3136 * lmm_magic: 0x0BD10BD0
3137 * lmm_seq: 0x200000401
3138 * lmm_object_id: 0x1
3139 * lmm_fid: [0x200000401:0x1:0x0]
3140 * lmm_stripe_count: 2
3141 * lmm_stripe_size: 1048576
3142 * lmm_pattern: raid0
3144 * lmm_stripe_offset: 1
3146 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3147 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3149 static void lov_dump_comp_v1(struct find_param *param, char *path,
3150 enum lov_dump_flags flags)
3152 struct lov_comp_md_entry_v1 *entry;
3153 struct lov_user_ost_data_v1 *objects;
3154 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3155 struct lov_user_md_v1 *v1;
3156 char pool_name[LOV_MAXPOOLNAME + 1];
3157 int obdindex = param->fp_obd_index;
3159 bool obdstripe = false;
3161 if (obdindex != OBD_NOT_FOUND) {
3162 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3163 i < comp_v1->lcm_entry_count; i++) {
3164 if (!(comp_v1->lcm_entries[i].lcme_flags &
3168 v1 = lov_comp_entry(comp_v1, i);
3169 objects = lov_v1v3_objects(v1);
3171 for (j = 0; j < v1->lmm_stripe_count; j++) {
3172 if (obdindex == objects[j].l_ost_idx) {
3185 lov_dump_comp_v1_header(param, path, flags);
3187 flags |= LDF_INDENT;
3189 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3190 entry = &comp_v1->lcm_entries[i];
3192 if (param->fp_check_comp_flags) {
3193 if (((param->fp_comp_flags & entry->lcme_flags) !=
3194 param->fp_comp_flags) ||
3195 (param->fp_comp_neg_flags & entry->lcme_flags))
3199 if (param->fp_check_comp_id &&
3200 param->fp_comp_id != entry->lcme_id)
3203 if (param->fp_check_comp_start) {
3204 match = find_value_cmp(entry->lcme_extent.e_start,
3205 param->fp_comp_start,
3206 param->fp_comp_start_sign,
3208 param->fp_comp_start_units, 0);
3213 if (param->fp_check_comp_end) {
3214 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3220 if (print_last_init_comp(param)) {
3222 * if part of stripe info is needed, we'd print only
3223 * the last instantiated component info.
3225 if (entry->lcme_flags & LCME_FL_INIT)
3231 if (entry->lcme_flags & LCME_FL_INIT) {
3232 if (obdindex != OBD_NOT_FOUND) {
3233 flags |= LDF_SKIP_OBJS;
3234 v1 = lov_comp_entry(comp_v1, i);
3235 objects = lov_v1v3_objects(v1);
3237 for (j = 0; j < v1->lmm_stripe_count; j++) {
3238 if (obdindex == objects[j].l_ost_idx) {
3239 flags &= ~LDF_SKIP_OBJS;
3244 flags &= ~LDF_SKIP_OBJS;
3247 flags |= LDF_SKIP_OBJS;
3250 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3252 lov_dump_comp_v1_entry(param, flags, i);
3254 v1 = lov_comp_entry(comp_v1, i);
3255 objects = lov_v1v3_objects(v1);
3256 lov_v1v3_pool_name(v1, pool_name);
3258 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3259 param->fp_max_depth, param->fp_verbose,
3262 if (print_last_init_comp(param)) {
3264 * directory layout contains only layout template, print the
3268 i = comp_v1->lcm_entry_count - 1;
3271 flags &= ~LDF_SKIP_OBJS;
3273 lov_dump_comp_v1_entry(param, flags, i);
3275 v1 = lov_comp_entry(comp_v1, i);
3276 objects = lov_v1v3_objects(v1);
3277 lov_v1v3_pool_name(v1, pool_name);
3279 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3280 param->fp_max_depth, param->fp_verbose,
3285 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3286 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3289 static inline bool has_any_comp_options(struct find_param *param)
3291 int verbose = param->fp_verbose;
3293 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3294 param->fp_check_comp_start || param->fp_check_comp_end ||
3295 param->fp_check_comp_flags)
3298 /* show full layout information, not component specific */
3299 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3302 return verbose & VERBOSE_COMP_OPTS;
3305 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3308 struct lov_user_md *lum = &orig->lmd_lmm;
3309 struct lov_user_mds_data *new;
3310 struct lov_comp_md_v1 *comp_v1;
3311 struct lov_comp_md_entry_v1 *ent;
3312 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3313 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3316 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3318 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3322 memcpy(new, orig, sizeof(lstat_t));
3324 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3325 comp_v1->lcm_magic = lum->lmm_magic;
3326 comp_v1->lcm_size = lum_off + lum_size;
3327 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3328 comp_v1->lcm_flags = 0;
3329 comp_v1->lcm_entry_count = 1;
3331 ent = &comp_v1->lcm_entries[0];
3333 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3334 ent->lcme_extent.e_start = 0;
3335 ent->lcme_extent.e_end = LUSTRE_EOF;
3336 ent->lcme_offset = lum_off;
3337 ent->lcme_size = lum_size;
3339 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3344 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3345 enum lov_dump_flags flags)
3347 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3349 if (has_any_comp_options(param)) {
3350 struct lov_user_mds_data *new_lmd, *orig_lmd;
3352 orig_lmd = param->fp_lmd;
3353 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3354 if (new_lmd != NULL) {
3355 param->fp_lmd = new_lmd;
3356 lov_dump_comp_v1(param, path, flags);
3357 param->fp_lmd = orig_lmd;
3363 if (magic == LOV_USER_MAGIC_V1) {
3364 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3365 param->fp_lmd->lmd_lmm.lmm_objects,
3366 path, param->fp_obd_index,
3367 param->fp_max_depth, param->fp_verbose,
3370 char pool_name[LOV_MAXPOOLNAME + 1];
3371 struct lov_user_ost_data_v1 *objects;
3372 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3374 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
3375 objects = lmmv3->lmm_objects;
3376 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3377 objects, path, param->fp_obd_index,
3378 param->fp_max_depth, param->fp_verbose,
3383 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3384 enum lov_dump_flags flags)
3388 if (param->fp_get_lmv || param->fp_get_default_lmv)
3389 magic = (__u32)param->fp_lmv_md->lum_magic;
3391 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3394 flags |= LDF_IS_RAW;
3399 case LOV_USER_MAGIC_V1:
3400 case LOV_USER_MAGIC_V3:
3401 lov_dump_plain_user_lmm(param, path, flags);
3404 case LMV_USER_MAGIC: {
3405 char pool_name[LOV_MAXPOOLNAME + 1];
3406 struct lmv_user_md *lum;
3408 lum = (struct lmv_user_md *)param->fp_lmv_md;
3409 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
3410 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3411 param->fp_max_depth, param->fp_verbose,
3415 case LOV_USER_MAGIC_COMP_V1:
3416 lov_dump_comp_v1(param, path, flags);
3419 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3420 "(expecting one of %#x %#x %#x %#x)\n",
3421 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3422 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3423 LMV_USER_MAGIC, LMV_MAGIC_V1);
3428 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3434 fname = strrchr(path, '/');
3436 /* It should be a file (or other non-directory) */
3437 if (fname == NULL) {
3438 dname = (char *)malloc(2);
3442 fname = (char *)path;
3444 dname = (char *)malloc(fname - path + 1);
3447 strncpy(dname, path, fname - path);
3448 dname[fname - path] = '\0';
3452 fd = open(dname, O_RDONLY | O_NONBLOCK);
3459 strcpy((char *)lum, fname);
3460 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3463 if (close(fd) == -1 && rc == 0)
3470 int llapi_file_lookup(int dirfd, const char *name)
3472 struct obd_ioctl_data data = { 0 };
3477 if (dirfd < 0 || name == NULL)
3480 data.ioc_version = OBD_IOCTL_VERSION;
3481 data.ioc_len = sizeof(data);
3482 data.ioc_inlbuf1 = (char *)name;
3483 data.ioc_inllen1 = strlen(name) + 1;
3485 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3487 llapi_error(LLAPI_MSG_ERROR, rc,
3488 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3493 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3499 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3500 * Return -1 or 1 if file timestamp does not or does match the given criteria
3501 * correspondingly. Return 0 if the MDS time is being checked and there are
3502 * attributes on OSTs and it is not yet clear if the timespamp matches.
3504 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3505 * updated timestamps. */
3506 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3511 /* Check if file is accepted. */
3512 if (param->fp_atime) {
3513 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3514 param->fp_asign, param->fp_exclude_atime,
3521 if (param->fp_mtime) {
3522 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3523 param->fp_msign, param->fp_exclude_mtime,
3528 /* If the previous check matches, but this one is not yet clear,
3529 * we should return 0 to do an RPC on OSTs. */
3534 if (param->fp_ctime) {
3535 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3536 param->fp_csign, param->fp_exclude_ctime,
3541 /* If the previous check matches, but this one is not yet clear,
3542 * we should return 0 to do an RPC on OSTs. */
3551 * Check whether the stripes matches the indexes user provided
3555 static int check_obd_match(struct find_param *param)
3557 struct lov_user_ost_data_v1 *objects;
3558 struct lov_comp_md_v1 *comp_v1 = NULL;
3559 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3560 lstat_t *st = ¶m->fp_lmd->lmd_st;
3561 int i, j, k, count = 1;
3563 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3566 if (!S_ISREG(st->st_mode))
3569 /* Only those files should be accepted, which have a
3570 * stripe on the specified OST. */
3571 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3572 comp_v1 = (struct lov_comp_md_v1 *)v1;
3573 count = comp_v1->lcm_entry_count;
3576 for (i = 0; i < count; i++) {
3578 v1 = lov_comp_entry(comp_v1, i);
3580 objects = lov_v1v3_objects(v1);
3582 for (j = 0; j < v1->lmm_stripe_count; j++) {
3583 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3586 for (k = 0; k < param->fp_num_obds; k++) {
3587 if (param->fp_obd_indexes[k] ==
3588 objects[j].l_ost_idx)
3589 return !param->fp_exclude_obd;
3594 return param->fp_exclude_obd;
3597 static int check_mdt_match(struct find_param *param)
3601 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3604 /* FIXME: For striped dir, we should get stripe information and check */
3605 for (i = 0; i < param->fp_num_mdts; i++) {
3606 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3607 return !param->fp_exclude_mdt;
3610 if (param->fp_exclude_mdt)
3617 * Check whether the obd is active or not, if it is
3618 * not active, just print the object affected by this
3621 static int print_failed_tgt(struct find_param *param, char *path, int type)
3623 struct obd_statfs stat_buf;
3624 struct obd_uuid uuid_buf;
3627 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3630 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3631 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3632 ret = llapi_obd_statfs(path, type,
3633 param->fp_obd_index, &stat_buf,
3636 llapi_printf(LLAPI_MSG_NORMAL,
3637 "obd_uuid: %s failed %s ",
3638 param->fp_obd_uuid->uuid,
3645 static int find_check_stripe_size(struct find_param *param)
3647 struct lov_comp_md_v1 *comp_v1 = NULL;
3648 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3649 int ret, i, count = 1;
3651 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3652 comp_v1 = (struct lov_comp_md_v1 *)v1;
3653 count = comp_v1->lcm_entry_count;
3654 ret = param->fp_exclude_stripe_size ? 1 : -1;
3657 for (i = 0; i < count; i++) {
3659 v1 = lov_comp_entry(comp_v1, i);
3661 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3662 param->fp_stripe_size_sign,
3663 param->fp_exclude_stripe_size,
3664 param->fp_stripe_size_units, 0);
3665 /* If any stripe_size matches */
3673 static __u32 find_get_stripe_count(struct find_param *param)
3675 struct lov_comp_md_v1 *comp_v1 = NULL;
3676 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3678 __u32 stripe_count = 0;
3680 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3681 comp_v1 = (struct lov_comp_md_v1 *)v1;
3682 count = comp_v1->lcm_entry_count;
3685 for (i = 0; i < count; i++) {
3687 v1 = lov_comp_entry(comp_v1, i);
3688 stripe_count += v1->lmm_stripe_count;
3691 return stripe_count;
3694 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3696 static int find_check_layout(struct find_param *param)
3698 struct lov_comp_md_v1 *comp_v1 = NULL;
3699 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3701 bool found = false, valid = false;
3703 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3704 comp_v1 = (struct lov_comp_md_v1 *)v1;
3705 count = comp_v1->lcm_entry_count;
3708 for (i = 0; i < count; i++) {
3710 v1 = lov_comp_entry(comp_v1, i);
3712 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3716 if (v1->lmm_pattern & param->fp_layout) {
3725 if ((found && !param->fp_exclude_layout) ||
3726 (!found && param->fp_exclude_layout))
3732 static int find_check_pool(struct find_param *param)
3734 struct lov_comp_md_v1 *comp_v1 = NULL;
3735 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3736 struct lov_user_md_v3 *v3 = (void *)v1;
3740 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3741 comp_v1 = (struct lov_comp_md_v1 *)v1;
3742 count = comp_v1->lcm_entry_count;
3743 /* empty requested pool is taken as no pool search */
3744 if (count == 0 && param->fp_poolname[0] == '\0')
3748 for (i = 0; i < count; i++) {
3749 if (comp_v1 != NULL)
3750 v1 = lov_comp_entry(comp_v1, i);
3752 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3753 (param->fp_poolname[0] == '\0')) ||
3754 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3755 (strncmp(v3->lmm_pool_name,
3756 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3757 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3758 (strcmp(param->fp_poolname, "*") == 0))) {
3764 if ((found && !param->fp_exclude_pool) ||
3765 (!found && param->fp_exclude_pool))
3771 static int find_check_comp_options(struct find_param *param)
3773 lstat_t *st = ¶m->fp_lmd->lmd_st;
3774 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3775 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3776 struct lov_comp_md_entry_v1 *entry;
3779 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3780 comp_v1 = (struct lov_comp_md_v1 *)v1;
3782 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3783 if (forged_v1 == NULL)
3785 comp_v1 = forged_v1;
3786 comp_v1->lcm_entry_count = 1;
3787 entry = &comp_v1->lcm_entries[0];
3788 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3789 entry->lcme_extent.e_start = 0;
3790 entry->lcme_extent.e_end = LUSTRE_EOF;
3793 /* invalid case, don't match for any kind of search. */
3794 if (comp_v1->lcm_entry_count == 0) {
3799 if (param->fp_check_comp_count) {
3800 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3801 param->fp_comp_count,
3802 param->fp_comp_count_sign,
3803 param->fp_exclude_comp_count, 1, 0);
3809 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3810 entry = &comp_v1->lcm_entries[i];
3812 if (param->fp_check_comp_flags) {
3814 if (((param->fp_comp_flags & entry->lcme_flags) !=
3815 param->fp_comp_flags) ||
3816 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3822 if (param->fp_check_comp_start) {
3823 ret = find_value_cmp(entry->lcme_extent.e_start,
3824 param->fp_comp_start,
3825 param->fp_comp_start_sign,
3826 param->fp_exclude_comp_start,
3827 param->fp_comp_start_units, 0);
3832 if (param->fp_check_comp_end) {
3833 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3839 /* the component matches all criteria */
3843 if (forged_v1 != NULL)
3848 static bool find_check_lmm_info(struct find_param *param)
3850 return param->fp_check_pool || param->fp_check_stripe_count ||
3851 param->fp_check_stripe_size || param->fp_check_layout ||
3852 param->fp_check_comp_count || param->fp_check_comp_end ||
3853 param->fp_check_comp_start || param->fp_check_comp_flags ||
3854 param->fp_check_projid;
3858 * Get file/directory project id.
3859 * by the open fd resides on.
3860 * Return 0 and project id on success, or -ve errno.
3862 static int fget_projid(int fd, int *projid)
3867 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3871 *projid = fsx.fsx_projid;
3875 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3876 void *data, struct dirent64 *de)
3878 struct find_param *param = (struct find_param *)data;
3879 DIR *dir = dirp == NULL ? NULL : *dirp;
3880 int decision = 1; /* 1 is accepted; -1 is rejected. */
3881 lstat_t *st = ¶m->fp_lmd->lmd_st;
3883 int checked_type = 0;
3885 __u32 stripe_count = 0;
3888 if (parent == NULL && dir == NULL)
3891 /* If a regular expression is presented, make the initial decision */
3892 if (param->fp_pattern != NULL) {
3893 char *fname = strrchr(path, '/');
3894 fname = (fname == NULL ? path : fname + 1);
3895 ret = fnmatch(param->fp_pattern, fname, 0);
3896 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3897 (ret == 0 && param->fp_exclude_pattern))
3901 /* See if we can check the file type from the dirent. */
3902 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3905 if (DTTOIF(de->d_type) == param->fp_type) {
3906 if (param->fp_exclude_type)
3909 if (!param->fp_exclude_type)
3916 /* Request MDS for the stat info if some of these parameters need
3917 * to be compared. */
3918 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3919 param->fp_check_uid || param->fp_check_gid ||
3920 param->fp_atime || param->fp_mtime || param->fp_ctime ||
3921 param->fp_check_size || find_check_lmm_info(param) ||
3922 param->fp_check_mdt_count || param->fp_check_hash_type)
3925 if (param->fp_type != 0 && checked_type == 0)
3928 if (decision == 0) {
3929 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
3930 param->fp_get_lmv = 1;
3931 ret = cb_get_dirstripe(path, dir, param);
3936 param->fp_lmd->lmd_lmm.lmm_magic = 0;
3937 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
3938 param->fp_lum_size);
3939 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
3940 find_check_lmm_info(param)) {
3941 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
3943 /* We need to "fake" the "use the default" values
3944 * since the lmm struct is zeroed out at this point. */
3945 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3946 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
3948 ostid_set_seq(&lmm->lmm_oi,
3949 FID_SEQ_LOV_DEFAULT);
3950 lmm->lmm_stripe_size = 0;
3951 lmm->lmm_stripe_count = 0;
3952 lmm->lmm_stripe_offset = -1;
3954 if (ret == 0 && param->fp_mdt_uuid != NULL) {
3956 ret = llapi_file_fget_mdtidx(dirfd(dir),
3957 ¶m->fp_file_mdt_index);
3958 } else if (S_ISREG(st->st_mode)) {
3959 /* FIXME: we could get the MDT index from the
3960 * file's FID in lmd->lmd_lmm.lmm_oi without
3961 * opening the file, once we are sure that
3962 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
3963 * That would still be an ioctl() to map the
3964 * FID to the MDT, but not an open RPC. */
3965 fd = open(path, O_RDONLY);
3967 ret = llapi_file_fget_mdtidx(fd,
3968 ¶m->fp_file_mdt_index);
3973 /* For a special file, we assume it resides on
3974 * the same MDT as the parent directory. */
3975 ret = llapi_file_fget_mdtidx(dirfd(parent),
3976 ¶m->fp_file_mdt_index);
3987 stripe_count = find_get_stripe_count(param);
3991 if (param->fp_type && !checked_type) {
3992 if ((st->st_mode & S_IFMT) == param->fp_type) {
3993 if (param->fp_exclude_type)
3996 if (!param->fp_exclude_type)
4002 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4003 if (lustre_fs && param->fp_got_uuids &&
4004 param->fp_dev != st->st_dev) {
4005 /* A lustre/lustre mount point is crossed. */
4006 param->fp_got_uuids = 0;
4007 param->fp_obds_printed = 0;
4008 param->fp_mdt_index = OBD_NOT_FOUND;
4009 param->fp_obd_index = OBD_NOT_FOUND;
4012 if (lustre_fs && !param->fp_got_uuids) {
4013 ret = setup_target_indexes(dir ? dir : parent, path,
4018 param->fp_dev = st->st_dev;
4019 } else if (!lustre_fs && param->fp_got_uuids) {
4020 /* A lustre/non-lustre mount point is crossed. */
4021 param->fp_got_uuids = 0;
4022 param->fp_mdt_index = OBD_NOT_FOUND;
4023 param->fp_obd_index = OBD_NOT_FOUND;
4027 if (param->fp_check_stripe_size) {
4028 decision = find_check_stripe_size(param);
4033 if (param->fp_check_stripe_count) {
4034 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4035 param->fp_stripe_count_sign,
4036 param->fp_exclude_stripe_count, 1, 0);
4041 if (param->fp_check_mdt_count) {
4042 decision = find_value_cmp(
4043 param->fp_lmv_md->lum_stripe_count,
4044 param->fp_mdt_count,
4045 param->fp_mdt_count_sign,
4046 param->fp_exclude_mdt_count, 1, 0);
4051 if (param->fp_check_layout) {
4052 decision = find_check_layout(param);
4057 if (param->fp_check_hash_type) {
4060 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4061 if ((found && param->fp_exclude_hash_type) ||
4062 (!found && !param->fp_exclude_hash_type)) {
4068 /* If an OBD UUID is specified but none matches, skip this file. */
4069 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4070 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4073 /* If an OST or MDT UUID is given, and some OST matches,
4075 if (param->fp_obd_index != OBD_NOT_FOUND ||
4076 param->fp_mdt_index != OBD_NOT_FOUND) {
4077 if (param->fp_obd_uuid) {
4078 if (check_obd_match(param)) {
4079 /* If no mdtuuid is given, we are done.
4080 * Otherwise, fall through to the mdtuuid
4082 if (!param->fp_mdt_uuid)
4089 if (param->fp_mdt_uuid) {
4090 if (check_mdt_match(param))
4097 if (param->fp_check_uid) {
4098 if (st->st_uid == param->fp_uid) {
4099 if (param->fp_exclude_uid)
4102 if (!param->fp_exclude_uid)
4107 if (param->fp_check_gid) {
4108 if (st->st_gid == param->fp_gid) {
4109 if (param->fp_exclude_gid)
4112 if (!param->fp_exclude_gid)
4117 if (param->fp_check_projid) {
4121 fd = open(path, O_RDONLY);
4124 ret = fget_projid(fd, &projid);
4129 if (projid == param->fp_projid) {
4130 if (param->fp_exclude_uid)
4133 if (!param->fp_exclude_projid)
4138 if (param->fp_check_pool) {
4139 decision = find_check_pool(param);
4144 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4145 param->fp_check_comp_start || param->fp_check_comp_end) {
4146 decision = find_check_comp_options(param);
4151 /* Check the time on mds. */
4153 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4156 for_mds = lustre_fs ?
4157 (S_ISREG(st->st_mode) && stripe_count) : 0;
4158 decision = find_time_check(st, param, for_mds);
4163 /* If file still fits the request, ask ost for updated info.
4164 The regular stat is almost of the same speed as some new
4165 'glimpse-size-ioctl'. */
4167 if (param->fp_check_size && S_ISREG(st->st_mode) && stripe_count)
4170 if (param->fp_check_size && S_ISDIR(st->st_mode))
4174 /* For regular files with the stripe the decision may have not
4175 * been taken yet if *time or size is to be checked. */
4176 if (param->fp_obd_index != OBD_NOT_FOUND)
4177 print_failed_tgt(param, path, LL_STATFS_LOV);
4179 if (param->fp_mdt_index != OBD_NOT_FOUND)
4180 print_failed_tgt(param, path, LL_STATFS_LMV);
4183 ret = fstat_f(dirfd(dir), st);
4184 else if (de != NULL)
4185 ret = fstatat_f(dirfd(parent), de->d_name, st,
4186 AT_SYMLINK_NOFOLLOW);
4188 ret = lstat_f(path, st);
4191 if (errno == ENOENT) {
4192 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4193 "warning: %s: %s does not exist",
4198 llapi_error(LLAPI_MSG_ERROR, ret,
4199 "%s: IOC_LOV_GETINFO on %s failed",
4205 /* Check the time on osc. */
4206 decision = find_time_check(st, param, 0);
4211 if (param->fp_check_size)
4212 decision = find_value_cmp(st->st_size, param->fp_size,
4213 param->fp_size_sign,
4214 param->fp_exclude_size,
4215 param->fp_size_units, 0);
4217 if (decision != -1) {
4218 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4219 if (param->fp_zero_end)
4220 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4222 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4227 /* Do not get down anymore? */
4228 if (param->fp_depth == param->fp_max_depth) {
4239 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4240 void *param_data, struct dirent64 *de)
4242 struct find_param *param = (struct find_param *)param_data;
4243 DIR *tmp_parent = parent;
4244 char raw[MAX_IOC_BUFLEN] = {'\0'};
4246 struct obd_ioctl_data data = { 0 };
4253 if (parent == NULL && dirp == NULL)
4259 if (parent == NULL) {
4260 tmp_parent = opendir_parent(path);
4261 if (tmp_parent == NULL) {
4264 llapi_error(LLAPI_MSG_ERROR, ret,
4265 "can not open %s", path);
4270 fd = dirfd(tmp_parent);
4272 path_copy = strdup(path);
4273 filename = basename(path_copy);
4274 data.ioc_inlbuf1 = (char *)filename;
4275 data.ioc_inllen1 = strlen(filename) + 1;
4276 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4277 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4278 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4280 llapi_error(LLAPI_MSG_ERROR, ret,
4281 "llapi_obd_statfs: error packing ioctl data");
4286 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4288 if (errno == EBUSY && !retry) {
4289 /* because migrate may not be able to lock all involved
4290 * objects in order, for some of them it try lock, while
4291 * there may be conflicting COS locks and cause migrate
4292 * fail with EBUSY, hope a sync() could cause
4293 * transaction commit and release these COS locks. */
4299 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4300 path, strerror(-ret), ret);
4302 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4303 fprintf(stdout, "migrate %s to MDT%d\n",
4304 path, param->fp_mdt_index);
4309 /* If the directory is being migration, we need
4310 * close the directory after migration,
4311 * so the old directory cache will be cleanup
4312 * on the client side, and re-open to get the
4313 * new directory handle */
4314 *dirp = opendir(path);
4315 if (*dirp == NULL) {
4317 llapi_error(LLAPI_MSG_ERROR, ret,
4318 "%s: Failed to open '%s'", __func__, path);
4323 closedir(tmp_parent);
4330 int llapi_migrate_mdt(char *path, struct find_param *param)
4332 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4335 int llapi_mv(char *path, struct find_param *param)
4337 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4338 static bool printed;
4341 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4342 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4346 return llapi_migrate_mdt(path, param);
4349 int llapi_find(char *path, struct find_param *param)
4351 return param_callback(path, cb_find_init, cb_common_fini, param);
4355 * Get MDT number that the file/directory inode referenced
4356 * by the open fd resides on.
4357 * Return 0 and mdtidx on success, or -ve errno.
4359 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4361 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4366 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4367 struct dirent64 *de)
4369 struct find_param *param = (struct find_param *)data;
4370 DIR *d = dirp == NULL ? NULL : *dirp;
4374 if (parent == NULL && d == NULL)
4378 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4379 } else /* if (parent) */ {
4382 fd = open(path, O_RDONLY | O_NOCTTY);
4384 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4392 if (ret == -ENODATA) {
4393 if (!param->fp_obd_uuid)
4394 llapi_printf(LLAPI_MSG_NORMAL,
4395 "'%s' has no stripe info\n", path);
4397 } else if (ret == -ENOENT) {
4398 llapi_error(LLAPI_MSG_WARN, ret,
4399 "warning: %s: '%s' does not exist",
4402 } else if (ret == -ENOTTY) {
4403 llapi_error(LLAPI_MSG_ERROR, ret,
4404 "%s: '%s' not on a Lustre fs",
4407 llapi_error(LLAPI_MSG_ERROR, ret,
4408 "error: %s: '%s' failed get_mdtidx",
4414 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4415 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4417 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4421 /* Do not go down anymore? */
4422 if (param->fp_depth == param->fp_max_depth)
4430 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4431 struct dirent64 *de)
4433 struct find_param *param = (struct find_param *)data;
4434 DIR *d = dirp == NULL ? NULL : *dirp;
4437 if (parent == NULL && d == NULL)
4440 if (param->fp_obd_uuid) {
4441 param->fp_quiet = 1;
4442 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4448 if (param->fp_get_lmv || param->fp_get_default_lmv) {
4449 ret = cb_get_dirstripe(path, d, param);
4451 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
4452 (void *)¶m->fp_lmd->lmd_lmm);
4455 } else if (parent && !param->fp_get_lmv && !param->fp_get_default_lmv) {
4456 char *fname = strrchr(path, '/');
4457 fname = (fname == NULL ? path : fname + 1);
4459 strlcpy((char *)¶m->fp_lmd->lmd_lmm, fname,
4460 param->fp_lum_size);
4462 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
4463 (void *)¶m->fp_lmd->lmd_lmm);
4469 if (errno == ENODATA && d != NULL) {
4470 /* We need to "fake" the "use the default" values
4471 * since the lmm struct is zeroed out at this point.
4472 * The magic needs to be set in order to satisfy
4473 * a check later on in the code path.
4474 * The object_seq needs to be set for the "(Default)"
4475 * prefix to be displayed. */
4476 if (param->fp_get_default_lmv) {
4477 struct lmv_user_md *lum = param->fp_lmv_md;
4479 lum->lum_magic = LMV_USER_MAGIC;
4480 lum->lum_stripe_count = 0;
4481 lum->lum_stripe_offset = -1;
4483 } else if (param->fp_get_lmv) {
4484 struct lmv_user_md *lum = param->fp_lmv_md;
4487 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4490 lum->lum_magic = LMV_MAGIC_V1;
4491 lum->lum_stripe_count = 0;
4492 lum->lum_stripe_offset = mdtidx;
4495 struct lov_user_md *lmm =
4496 ¶m->fp_lmd->lmd_lmm;
4498 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4500 ostid_set_seq(&lmm->lmm_oi,
4501 FID_SEQ_LOV_DEFAULT);
4502 lmm->lmm_stripe_count = 0;
4503 lmm->lmm_stripe_size = 0;
4504 lmm->lmm_stripe_offset = -1;
4507 } else if (errno == ENODATA && parent != NULL) {
4508 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4509 llapi_printf(LLAPI_MSG_NORMAL,
4510 "%s has no stripe info\n", path);
4512 } else if (errno == ENOENT) {
4513 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4514 "warning: %s: %s does not exist",
4517 } else if (errno == ENOTTY) {
4519 llapi_error(LLAPI_MSG_ERROR, ret,
4520 "%s: '%s' not on a Lustre fs?",
4525 llapi_error(LLAPI_MSG_ERROR, ret,
4526 "error: %s: %s failed for %s",
4527 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4528 "IOC_MDC_GETFILESTRIPE", path);
4535 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4536 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4539 /* Do not get down anymore? */
4540 if (param->fp_depth == param->fp_max_depth)
4548 int llapi_getstripe(char *path, struct find_param *param)
4550 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4551 cb_get_mdt_index : cb_getstripe,
4552 cb_common_fini, param);
4555 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4556 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4558 char raw[MAX_IOC_BUFLEN] = {'\0'};
4560 struct obd_ioctl_data data = { 0 };
4563 data.ioc_inlbuf1 = (char *)&type;
4564 data.ioc_inllen1 = sizeof(__u32);
4565 data.ioc_inlbuf2 = (char *)&index;
4566 data.ioc_inllen2 = sizeof(__u32);
4567 data.ioc_pbuf1 = (char *)stat_buf;
4568 data.ioc_plen1 = sizeof(struct obd_statfs);
4569 data.ioc_pbuf2 = (char *)uuid_buf;
4570 data.ioc_plen2 = sizeof(struct obd_uuid);
4572 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4574 llapi_error(LLAPI_MSG_ERROR, rc,
4575 "llapi_obd_statfs: error packing ioctl data");
4579 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4581 return rc < 0 ? -errno : 0;
4584 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4585 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4590 fd = open(path, O_RDONLY);
4593 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4595 /* If we can't even open a file on the filesystem (e.g. with
4596 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4600 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4607 #define MAX_STRING_SIZE 128
4609 int llapi_ping(char *obd_type, char *obd_name)
4615 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4616 obd_type, obd_name);
4620 fd = open(path.gl_pathv[0], O_WRONLY);
4623 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4628 /* The purpose is to send a byte as a ping, whatever this byte is. */
4629 /* coverity[uninit_use_in_call] */
4630 rc = write(fd, buf, 1);
4638 cfs_free_param_data(&path);
4642 int llapi_target_iterate(int type_num, char **obd_type,
4643 void *args, llapi_cb_t cb)
4645 char buf[MAX_STRING_SIZE];
4650 rc = cfs_get_param_paths(¶m, "devices");
4654 fp = fopen(param.gl_pathv[0], "r");
4657 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4662 while (fgets(buf, sizeof(buf), fp) != NULL) {
4663 char *obd_type_name = NULL;
4664 char *obd_name = NULL;
4665 char *obd_uuid = NULL;
4667 struct obd_statfs osfs_buffer;
4669 while(bufp[0] == ' ')
4672 for(i = 0; i < 3; i++) {
4673 obd_type_name = strsep(&bufp, " ");
4675 obd_name = strsep(&bufp, " ");
4676 obd_uuid = strsep(&bufp, " ");
4678 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4680 for (i = 0; i < type_num; i++) {
4681 if (strcmp(obd_type_name, obd_type[i]) != 0)
4684 cb(obd_type_name, obd_name, obd_uuid, args);
4689 cfs_free_param_data(¶m);
4693 static void do_target_check(char *obd_type_name, char *obd_name,
4694 char *obd_uuid, void *args)
4698 rc = llapi_ping(obd_type_name, obd_name);
4699 if (rc == ENOTCONN) {
4700 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4702 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4704 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4708 int llapi_target_check(int type_num, char **obd_type, char *dir)
4710 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4713 #undef MAX_STRING_SIZE
4715 /* Is this a lustre fs? */
4716 int llapi_is_lustre_mnttype(const char *type)
4718 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4721 /* Is this a lustre client fs? */
4722 int llapi_is_lustre_mnt(struct mntent *mnt)
4724 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4725 strstr(mnt->mnt_fsname, ":/") != NULL);
4728 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4730 char fsname[PATH_MAX + 1];
4734 rc = llapi_search_fsname(mnt, fsname);
4738 root = open(mnt, O_RDONLY | O_DIRECTORY);
4741 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4745 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4753 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4754 * format must have %s%s, buf must be > 16
4755 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4756 * then buf = "lustre-MDT0000"
4758 static int get_mdtname(char *name, char *format, char *buf)
4760 char suffix[]="-MDT0000";
4761 int len = strlen(name);
4763 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4764 name[len - 5] = '\0';
4769 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4772 /* Not enough room to add suffix */
4773 llapi_err_noerrno(LLAPI_MSG_ERROR,
4774 "Invalid MDT name |%s|", name);
4779 return sprintf(buf, format, name, suffix);
4782 /** ioctl on filsystem root, with mdtindex sent as data
4783 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4784 * \param mdtidxp pointer to integer within data to be filled in with the
4785 * mdt index (0 if no mdt is specified). NULL won't be filled.
4787 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4795 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4796 Open root and parse mdt index. */
4797 if (mdtname[0] == '/') {
4799 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4800 (char *)mdtname, -1);
4802 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4804 ptr = fsname + strlen(fsname) - 8;
4806 index = strtol(ptr + 4, NULL, 16);
4807 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4811 llapi_err_noerrno(LLAPI_MSG_ERROR,
4812 "Can't open %s: %d\n", mdtname, rc);
4819 rc = ioctl(fd, opc, data);
4828 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4829 int buflen, long long *recno, int *linkno)
4831 const char *fidstr_orig = fidstr;
4833 struct getinfo_fid2path *gf;
4838 while (*fidstr == '[')
4841 sscanf(fidstr, SFID, RFID(&fid));
4842 if (!fid_is_sane(&fid)) {
4843 llapi_err_noerrno(LLAPI_MSG_ERROR,
4844 "bad FID format '%s', should be [seq:oid:ver]"
4845 " (e.g. "DFID")\n", fidstr_orig,
4846 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4850 gf = malloc(sizeof(*gf) + buflen);
4855 gf->gf_recno = *recno;
4856 gf->gf_linkno = *linkno;
4857 gf->gf_pathlen = buflen;
4859 /* Take path or fsname */
4860 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4865 /* strip out instances of // */
4866 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4867 if ((*a == '/') && (*(a + 1) == '/'))
4874 if (buf[0] == '\0') { /* ROOT path */
4879 *recno = gf->gf_recno;
4880 *linkno = gf->gf_linkno;
4887 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
4890 struct lustre_mdt_attrs *lma;
4894 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4896 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4899 lma = (struct lustre_mdt_attrs *)buf;
4900 fid_le_to_cpu(fid, &lma->lma_self_fid);
4904 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
4909 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4918 int llapi_fd2fid(int fd, struct lu_fid *fid)
4922 memset(fid, 0, sizeof(*fid));
4924 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4925 if (rc == -EINVAL || rc == -ENOTTY)
4926 rc = fid_from_lma(NULL, fd, fid);
4931 int llapi_path2fid(const char *path, struct lu_fid *fid)
4935 memset(fid, 0, sizeof(*fid));
4936 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4938 if (errno == ELOOP || errno == ENXIO)
4939 return fid_from_lma(path, -1, fid);
4943 rc = llapi_fd2fid(fd, fid);
4944 if (rc == -EINVAL || rc == -ENOTTY)
4945 rc = fid_from_lma(path, -1, fid);
4951 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
4952 char *name, size_t name_size)
4954 struct getparent *gp;
4957 gp = malloc(sizeof(*gp) + name_size);
4961 gp->gp_linkno = linkno;
4962 gp->gp_name_size = name_size;
4964 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4970 *parent_fid = gp->gp_fid;
4972 strncpy(name, gp->gp_name, name_size);
4973 name[name_size - 1] = '\0';
4980 int llapi_path2parent(const char *path, unsigned int linkno,
4981 struct lu_fid *parent_fid, char *name, size_t name_size)
4986 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4990 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4995 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5000 root = open(mnt, O_RDONLY | O_DIRECTORY);
5003 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5007 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5010 llapi_error(LLAPI_MSG_ERROR, rc,
5011 "ioctl on %s for getting connect flags failed", mnt);
5018 * Get a 64-bit value representing the version of file data pointed by fd.
5020 * Each write or truncate, flushed on OST, will change this value. You can use
5021 * this value to verify if file data was modified. This only checks the file
5022 * data, not metadata.
5024 * \param flags 0: no flush pages, usually used it the process has already
5026 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5028 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5029 * pages from clients.
5031 * \retval 0 on success.
5032 * \retval -errno on error.
5034 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5037 struct ioc_data_version idv;
5039 idv.idv_flags = (__u32)flags;
5041 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5045 *data_version = idv.idv_version;
5051 * Flush cached pages from all clients.
5053 * \param fd File descriptor
5057 int llapi_file_flush(int fd)
5061 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5065 * Fetch layout version from OST objects. Layout version on OST objects are
5066 * only set when the file is a mirrored file AND after the file has been
5067 * written at least once.
5069 * It actually fetches the least layout version from the objects.
5071 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5074 struct ioc_data_version idv = { 0 };
5076 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5080 *layout_version = idv.idv_layout_version;
5086 * Create a file without any name open it for read/write
5088 * - file is created as if it were a standard file in the given \a directory
5089 * - file does not appear in \a directory and mtime does not change because
5090 * the filename is handled specially by the Lustre MDS.
5091 * - file is removed at final close
5092 * - file modes are rw------- since it doesn't make sense to have a read-only
5093 * or write-only file that cannot be opened again.
5094 * - if user wants another mode it must use fchmod() on the open file, no
5095 * security problems arise because it cannot be opened by another process.
5097 * \param[in] directory directory from which to inherit layout/MDT idx
5098 * \param[in] idx MDT index on which the file is created,
5099 * \a idx == -1 means no specific MDT is requested
5100 * \param[in] open_flags standard open(2) flags
5102 * \retval 0 on success.
5103 * \retval -errno on error.
5105 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5107 char file_path[PATH_MAX];
5108 char filename[PATH_MAX];
5109 int saved_errno = errno;
5117 snprintf(filename, sizeof(filename),
5118 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5120 snprintf(filename, sizeof(filename),
5121 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5123 rc = snprintf(file_path, sizeof(file_path),
5124 "%s/%s", directory, filename);
5125 if (rc >= sizeof(file_path))
5128 fd = open(file_path,
5129 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5131 } while (fd < 0 && errno == EEXIST);
5134 llapi_error(LLAPI_MSG_ERROR, errno,
5135 "Cannot create volatile file '%s' in '%s'",
5136 filename + LUSTRE_VOLATILE_HDR_LEN,
5141 /* Unlink file in case this wasn't a Lustre filesystem and the
5142 * magic volatile filename wasn't handled as intended. The
5143 * effect is the same. If volatile open was supported then we
5144 * expect unlink() to return -ENOENT. */
5145 (void)unlink(file_path);
5147 /* Since we are returning successfully we restore errno (and
5148 * mask out possible EEXIST from open() and ENOENT from
5150 errno = saved_errno;
5156 * Swap the layouts between 2 file descriptors
5157 * the 2 files must be open for writing
5158 * first fd received the ioctl, second fd is passed as arg
5159 * this is assymetric but avoid use of root path for ioctl
5161 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5162 int gid, __u64 flags)
5164 struct lustre_swap_layouts lsl;
5169 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5170 rc = fstat(fd1, &st1);
5174 rc = fstat(fd2, &st2);
5179 lsl.sl_flags = flags;
5183 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5187 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5188 struct timeval tv1[2];
5189 struct timeval tv2[2];
5191 memset(tv1, 0, sizeof(tv1));
5192 memset(tv2, 0, sizeof(tv2));
5194 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5195 tv1[0].tv_sec = st1.st_atime;
5196 tv2[0].tv_sec = st2.st_atime;
5198 tv1[0].tv_sec = st2.st_atime;
5199 tv2[0].tv_sec = st1.st_atime;
5202 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5203 tv1[1].tv_sec = st1.st_mtime;
5204 tv2[1].tv_sec = st2.st_mtime;
5206 tv1[1].tv_sec = st2.st_mtime;
5207 tv2[1].tv_sec = st1.st_mtime;
5210 rc = futimes(fd1, tv1);
5214 rc = futimes(fd2, tv2);
5222 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5229 while (grp_id == 0);
5231 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5239 * Swap the layouts between 2 files
5240 * the 2 files are open in write
5242 int llapi_swap_layouts(const char *path1, const char *path2,
5243 __u64 dv1, __u64 dv2, __u64 flags)
5247 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5250 llapi_error(LLAPI_MSG_ERROR, rc,
5251 "error: cannot open '%s' for write", path1);
5255 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5258 llapi_error(LLAPI_MSG_ERROR, rc,
5259 "error: cannot open '%s' for write", path2);
5263 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5265 llapi_error(LLAPI_MSG_ERROR, rc,
5266 "error: cannot swap layout between '%s' and '%s'",
5277 * Attempt to open a file with Lustre file identifier \a fid
5278 * and return an open file descriptor.
5280 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5281 * \param[in] fid Lustre file identifier of file to open
5282 * \param[in] flags open() flags
5284 * \retval non-negative file descriptor on successful open
5285 * \retval -1 if an error occurred
5287 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5290 char mntdir[PATH_MAX];
5291 char path[PATH_MAX];
5294 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5298 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5299 return open(path, flags);
5305 * \param fd File to lock.
5306 * \param gid Group Identifier.
5308 * \retval 0 on success.
5309 * \retval -errno on failure.
5311 int llapi_group_lock(int fd, int gid)
5315 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5318 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5326 * \param fd File to unlock.
5327 * \param gid Group Identifier.
5329 * \retval 0 on success.
5330 * \retval -errno on failure.
5332 int llapi_group_unlock(int fd, int gid)
5336 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5339 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");