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>
73 #include <libcfs/util/ioctl.h>
74 #include <libcfs/util/param.h>
75 #include <libcfs/util/string.h>
76 #include <linux/lnet/lnetctl.h>
77 #include <lustre/lustreapi.h>
78 #include <linux/lustre/lustre_ostid.h>
79 #include <linux/lustre/lustre_ioctl.h>
80 #include "lustreapi_internal.h"
82 static int llapi_msg_level = LLAPI_MSG_MAX;
83 const char *liblustreapi_cmd;
85 char *mdt_hash_name[] = { "none",
86 LMV_HASH_NAME_ALL_CHARS,
87 LMV_HASH_NAME_FNV_1A_64 };
89 void llapi_msg_set_level(int level)
91 /* ensure level is in the good range */
92 if (level < LLAPI_MSG_OFF)
93 llapi_msg_level = LLAPI_MSG_OFF;
94 else if (level > LLAPI_MSG_MAX)
95 llapi_msg_level = LLAPI_MSG_MAX;
97 llapi_msg_level = level;
100 int llapi_msg_get_level(void)
102 return llapi_msg_level;
105 void llapi_set_command_name(const char *cmd)
107 liblustreapi_cmd = cmd;
110 void llapi_clear_command_name(void)
112 liblustreapi_cmd = NULL;
115 static void error_callback_default(enum llapi_message_level level, int err,
116 const char *fmt, va_list ap)
118 if (liblustreapi_cmd != NULL)
119 fprintf(stderr, "%s %s: ", program_invocation_short_name,
122 fprintf(stderr, "%s: ", program_invocation_short_name);
123 vfprintf(stderr, fmt, ap);
124 if (level & LLAPI_MSG_NO_ERRNO)
125 fprintf(stderr, "\n");
127 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
130 static void info_callback_default(enum llapi_message_level level, int err,
131 const char *fmt, va_list ap)
134 if (liblustreapi_cmd != NULL) {
135 fprintf(stdout, "%s %s: ",
136 program_invocation_short_name,
139 fprintf(stdout, "%s: ", program_invocation_short_name);
142 vfprintf(stdout, fmt, ap);
145 static llapi_log_callback_t llapi_error_callback = error_callback_default;
146 static llapi_log_callback_t llapi_info_callback = info_callback_default;
149 /* llapi_error will preserve errno */
150 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
153 int tmp_errno = errno;
155 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
159 llapi_error_callback(level, abs(err), fmt, args);
164 /* llapi_printf will preserve errno */
165 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
168 int tmp_errno = errno;
170 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
174 llapi_info_callback(level, 0, fmt, args);
180 * Set a custom error logging function. Passing in NULL will reset the logging
181 * callback to its default value.
183 * This function returns the value of the old callback.
185 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
187 llapi_log_callback_t old = llapi_error_callback;
190 llapi_error_callback = cb;
192 llapi_error_callback = error_callback_default;
198 * Set a custom info logging function. Passing in NULL will reset the logging
199 * callback to its default value.
201 * This function returns the value of the old callback.
203 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
205 llapi_log_callback_t old = llapi_info_callback;
208 llapi_info_callback = cb;
210 llapi_info_callback = info_callback_default;
216 * size_units is to be initialized (or zeroed) by caller.
218 int llapi_parse_size(const char *optarg, unsigned long long *size,
219 unsigned long long *size_units, int bytes_spec)
222 char *argbuf = (char *)optarg;
223 unsigned long long frac = 0, frac_d = 1;
225 if (strncmp(optarg, "-", 1) == 0)
228 if (*size_units == 0)
231 *size = strtoull(argbuf, &end, 0);
232 if (end != NULL && *end == '.') {
236 frac = strtoull(argbuf, &end, 10);
237 /* count decimal places */
238 for (i = 0; i < (end - argbuf); i++)
243 if ((*end == 'b') && *(end + 1) == '\0' &&
244 (*size & (~0ULL << (64 - 9))) == 0 &&
246 *size_units = 1 << 9;
247 } else if ((*end == 'b') &&
248 *(end + 1) == '\0' &&
251 } else if ((*end == 'k' || *end == 'K') &&
252 *(end + 1) == '\0' &&
253 (*size & (~0ULL << (64 - 10))) == 0) {
254 *size_units = 1 << 10;
255 } else if ((*end == 'm' || *end == 'M') &&
256 *(end + 1) == '\0' &&
257 (*size & (~0ULL << (64 - 20))) == 0) {
258 *size_units = 1 << 20;
259 } else if ((*end == 'g' || *end == 'G') &&
260 *(end + 1) == '\0' &&
261 (*size & (~0ULL << (64 - 30))) == 0) {
262 *size_units = 1 << 30;
263 } else if ((*end == 't' || *end == 'T') &&
264 *(end + 1) == '\0' &&
265 (*size & (~0ULL << (64 - 40))) == 0) {
266 *size_units = 1ULL << 40;
267 } else if ((*end == 'p' || *end == 'P') &&
268 *(end + 1) == '\0' &&
269 (*size & (~0ULL << (64 - 50))) == 0) {
270 *size_units = 1ULL << 50;
271 } else if ((*end == 'e' || *end == 'E') &&
272 *(end + 1) == '\0' &&
273 (*size & (~0ULL << (64 - 60))) == 0) {
274 *size_units = 1ULL << 60;
279 *size = *size * *size_units + frac * *size_units / frac_d;
284 int llapi_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
286 struct obd_ioctl_data *overlay;
289 data->ioc_len = obd_ioctl_packlen(data);
290 data->ioc_version = OBD_IOCTL_VERSION;
292 if (*pbuf != NULL && data->ioc_len > max_len) {
293 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
294 "pbuf = %p, ioc_len = %u, max_len = %d\n",
295 *pbuf, data->ioc_len, max_len);
300 *pbuf = malloc(data->ioc_len);
305 overlay = (struct obd_ioctl_data *)*pbuf;
306 memcpy(*pbuf, data, sizeof(*data));
308 ptr = overlay->ioc_bulk;
309 if (data->ioc_inlbuf1) {
310 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
311 ptr += __ALIGN_KERNEL(data->ioc_inllen1, 8);
314 if (data->ioc_inlbuf2) {
315 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
316 ptr += __ALIGN_KERNEL(data->ioc_inllen2, 8);
319 if (data->ioc_inlbuf3) {
320 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
321 ptr += __ALIGN_KERNEL(data->ioc_inllen3, 8);
324 if (data->ioc_inlbuf4) {
325 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
326 ptr += __ALIGN_KERNEL(data->ioc_inllen4, 8);
332 int llapi_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
334 struct obd_ioctl_data *overlay;
340 overlay = (struct obd_ioctl_data *)pbuf;
342 /* Preserve the caller's buffer pointers */
343 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
344 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
345 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
346 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
348 memcpy(data, pbuf, sizeof(*data));
350 ptr = overlay->ioc_bulk;
351 if (data->ioc_inlbuf1) {
352 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
353 ptr += __ALIGN_KERNEL(data->ioc_inllen1, 8);
356 if (data->ioc_inlbuf2) {
357 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
358 ptr += __ALIGN_KERNEL(data->ioc_inllen2, 8);
361 if (data->ioc_inlbuf3) {
362 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
363 ptr += __ALIGN_KERNEL(data->ioc_inllen3, 8);
366 if (data->ioc_inlbuf4) {
367 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
368 ptr += __ALIGN_KERNEL(data->ioc_inllen4, 8);
374 /* XXX: llapi_xxx() functions return negative values upon failure */
376 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
377 int stripe_count, int stripe_pattern)
381 /* 64 KB is the largest common page size I'm aware of (on ia64), but
382 * check the local page size just in case. */
383 page_size = LOV_MIN_STRIPE_SIZE;
384 if (getpagesize() > page_size) {
385 page_size = getpagesize();
386 llapi_err_noerrno(LLAPI_MSG_WARN,
387 "warning: your page size (%u) is "
388 "larger than expected (%u)", page_size,
389 LOV_MIN_STRIPE_SIZE);
391 if (!llapi_stripe_size_is_aligned(stripe_size)) {
393 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
394 "must be an even multiple of %d bytes",
395 stripe_size, page_size);
398 if (!llapi_stripe_index_is_valid(stripe_offset)) {
400 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
404 if (!llapi_stripe_count_is_valid(stripe_count)) {
406 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
410 if (llapi_stripe_size_is_too_big(stripe_size)) {
412 llapi_error(LLAPI_MSG_ERROR, rc,
413 "warning: stripe size 4G or larger "
414 "is not currently supported and would wrap");
420 int llapi_dir_stripe_limit_check(int stripe_offset, int stripe_count,
425 if (!llapi_dir_stripe_index_is_valid(stripe_offset)) {
427 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
431 if (!llapi_dir_stripe_count_is_valid(stripe_count)) {
433 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
438 if (!llapi_dir_hash_type_is_valid(hash_type)) {
440 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad hash type %d",
448 * Trim a trailing newline from a string, if it exists.
450 int llapi_chomp_string(char *buf)
466 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
468 static int get_param_lov(const char *path, const char *param,
469 char *buf, size_t buf_size)
471 struct obd_uuid uuid;
474 rc = llapi_file_get_lov_uuid(path, &uuid);
478 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
483 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
485 static int get_param_lmv(const char *path, const char *param,
486 char *buf, size_t buf_size)
488 struct obd_uuid uuid;
491 rc = llapi_file_get_lmv_uuid(path, &uuid);
495 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
499 static int get_mds_md_size(const char *path)
501 char buf[PATH_MAX], inst[PATH_MAX];
502 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
505 rc = llapi_getname(path, inst, sizeof(inst));
509 /* Get the max ea size from llite parameters. */
510 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
511 "max_easize", buf, sizeof(buf));
517 return rc > 0 ? rc : md_size;
520 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
522 return get_param_lmv(path, "uuid", buf, bufsize);
526 * if pool is NULL, search tgtname in target_obd
527 * if pool is not NULL:
528 * if pool not found returns errno < 0
529 * if tgtname is NULL, returns 1 if pool is not empty and 0 if pool empty
530 * if tgtname is not NULL, returns 1 if OST is in pool and 0 if not
532 int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt)
534 char buffer[PATH_MAX];
540 /* You need one or the other */
541 if (poolname == NULL && fsname == NULL)
545 len = strlen(tgtname);
547 if (poolname == NULL && len == 0)
550 /* Search by poolname and fsname if is not NULL */
551 if (poolname != NULL) {
552 rc = poolpath(¶m, fsname, NULL);
554 snprintf(buffer, sizeof(buffer), "%s/%s",
555 param.gl_pathv[0], poolname);
557 } else if (fsname != NULL) {
558 rc = get_lustre_param_path(is_mdt ? "lmv" : "lov", fsname,
560 "target_obd", ¶m);
562 strncpy(buffer, param.gl_pathv[0],
568 cfs_free_param_data(¶m);
572 fd = fopen(buffer, "r");
576 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
577 if (poolname == NULL) {
579 /* Search for an tgtname in the list of targets
580 * Line format is IDX: fsname-OST/MDTxxxx_UUID STATUS */
581 ptr = strchr(buffer, ' ');
583 (strncmp(ptr + 1, tgtname, len) == 0)) {
588 /* Search for an tgtname in a pool,
589 * (or an existing non-empty pool if no tgtname) */
590 if ((tgtname == NULL) ||
591 (strncmp(buffer, tgtname, len) == 0)) {
601 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
603 return llapi_search_tgt(fsname, poolname, ostname, false);
607 * Open a Lustre file.
609 * \param name the name of the file to be opened
610 * \param flags access mode, see flags in open(2)
611 * \param mode permission of the file if it is created, see mode in open(2)
612 * \param param stripe pattern of the newly created file
614 * \retval file descriptor of opened file
615 * \retval negative errno on failure
617 int llapi_file_open_param(const char *name, int flags, mode_t mode,
618 const struct llapi_stripe_param *param)
620 char fsname[MAX_OBD_NAME + 1] = { 0 };
621 char *pool_name = param->lsp_pool;
622 struct lov_user_md *lum = NULL;
623 size_t lum_size = sizeof(*lum);
626 /* Make sure we are on a Lustre file system */
627 rc = llapi_search_fsname(name, fsname);
629 llapi_error(LLAPI_MSG_ERROR, rc,
630 "'%s' is not on a Lustre filesystem",
635 /* Check if the stripe pattern is sane. */
636 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
637 param->lsp_stripe_offset,
638 param->lsp_stripe_count,
639 param->lsp_stripe_pattern);
643 /* Make sure we have a good pool */
644 if (pool_name != NULL) {
645 /* in case user gives the full pool name <fsname>.<poolname>,
646 * strip the fsname */
647 char *ptr = strchr(pool_name, '.');
650 if (strcmp(pool_name, fsname) != 0) {
652 llapi_err_noerrno(LLAPI_MSG_ERROR,
653 "Pool '%s' is not on filesystem '%s'",
660 /* Make sure the pool exists and is non-empty */
661 rc = llapi_search_ost(fsname, pool_name, NULL);
663 char *err = rc == 0 ? "has no OSTs" : "does not exist";
665 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
666 fsname, pool_name, err);
670 lum_size = sizeof(struct lov_user_md_v3);
673 /* sanity check of target list */
674 if (param->lsp_is_specific) {
675 char ostname[MAX_OBD_NAME + 1];
679 for (i = 0; i < param->lsp_stripe_count; i++) {
680 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
681 fsname, param->lsp_osts[i]);
682 rc = llapi_search_ost(fsname, pool_name, ostname);
687 llapi_error(LLAPI_MSG_ERROR, rc,
688 "%s: cannot find OST %s in %s",
695 /* Make sure stripe offset is in OST list. */
696 if (param->lsp_osts[i] == param->lsp_stripe_offset)
700 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
701 "%s: stripe offset '%d' is not in the "
703 __func__, param->lsp_stripe_offset);
707 lum_size = lov_user_md_size(param->lsp_stripe_count,
708 LOV_USER_MAGIC_SPECIFIC);
711 lum = calloc(1, lum_size);
716 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
718 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
719 flags = O_DIRECTORY | O_RDONLY;
726 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
731 /* Initialize IOCTL striping pattern structure */
732 lum->lmm_magic = LOV_USER_MAGIC_V1;
733 lum->lmm_pattern = param->lsp_stripe_pattern;
734 lum->lmm_stripe_size = param->lsp_stripe_size;
735 lum->lmm_stripe_count = param->lsp_stripe_count;
736 lum->lmm_stripe_offset = param->lsp_stripe_offset;
737 if (pool_name != NULL) {
738 struct lov_user_md_v3 *lumv3 = (void *)lum;
740 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
741 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
743 if (param->lsp_is_specific) {
744 struct lov_user_md_v3 *lumv3 = (void *)lum;
747 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
748 if (pool_name == NULL) {
749 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
750 * OST list, therefore if pool is not specified we have
751 * to pack a null pool name for placeholder. */
752 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
755 for (i = 0; i < param->lsp_stripe_count; i++)
756 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
759 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
760 char *errmsg = "stripe already set";
763 if (errno != EEXIST && errno != EALREADY)
764 errmsg = strerror(errno);
766 llapi_err_noerrno(LLAPI_MSG_ERROR,
767 "setstripe error for '%s': %s", name, errmsg);
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 "default dirstripe error on '%s': %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(const char *name, mode_t mode,
1004 const struct llapi_stripe_param *param)
1006 struct lmv_user_md *lmu = NULL;
1008 struct obd_ioctl_data data = { 0 };
1011 char *dirpath = NULL;
1012 char *namepath = NULL;
1017 rc = verify_dir_param(name, param);
1021 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1022 param->lsp_is_specific ?
1023 LMV_USER_MAGIC_SPECIFIC :
1026 lmu = calloc(1, lmu_size);
1030 dirpath = strdup(name);
1036 namepath = strdup(name);
1043 param2lmu(lmu, param);
1045 filename = basename(namepath);
1046 dir = dirname(dirpath);
1048 data.ioc_inlbuf1 = (char *)filename;
1049 data.ioc_inllen1 = strlen(filename) + 1;
1050 data.ioc_inlbuf2 = (char *)lmu;
1051 data.ioc_inllen2 = lmu_size;
1052 data.ioc_type = mode;
1053 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
1055 llapi_error(LLAPI_MSG_ERROR, rc,
1056 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1061 fd = open(dir, O_DIRECTORY | O_RDONLY);
1064 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1068 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1069 char *errmsg = "stripe already set";
1072 if (errno != EEXIST && errno != EALREADY)
1073 errmsg = strerror(errno);
1075 llapi_err_noerrno(LLAPI_MSG_ERROR,
1076 "dirstripe error on '%s': %s", name, errmsg);
1087 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1088 int stripe_count, int stripe_pattern,
1089 const char *pool_name)
1091 const struct llapi_stripe_param param = {
1092 .lsp_stripe_count = stripe_count,
1093 .lsp_stripe_offset = stripe_offset,
1094 .lsp_stripe_pattern = stripe_pattern,
1095 .lsp_pool = (char *)pool_name
1098 return llapi_dir_create(name, mode, ¶m);
1101 int llapi_direntry_remove(char *dname)
1103 char *dirpath = NULL;
1104 char *namepath = NULL;
1110 dirpath = strdup(dname);
1111 namepath = strdup(dname);
1112 if (!dirpath || !namepath)
1115 filename = basename(namepath);
1117 dir = dirname(dirpath);
1119 fd = open(dir, O_DIRECTORY | O_RDONLY);
1122 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1127 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1128 char *errmsg = strerror(errno);
1129 llapi_err_noerrno(LLAPI_MSG_ERROR,
1130 "error on ioctl %#jx for '%s' (%d): %s",
1131 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1143 * Find the fsname, the full path, and/or an open fd.
1144 * Either the fsname or path must not be NULL
1146 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1149 char buf[PATH_MAX], mntdir[PATH_MAX];
1150 char *ptr, *ptr_end;
1152 int idx = 0, len = 0, mntlen, fd;
1155 /* get the mount point */
1156 fp = setmntent(PROC_MOUNTS, "r");
1159 llapi_error(LLAPI_MSG_ERROR, rc,
1160 "cannot retrieve filesystem mount point");
1164 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1167 if (!llapi_is_lustre_mnt(&mnt))
1170 if ((want & WANT_INDEX) && (idx++ != index))
1173 mntlen = strlen(mnt.mnt_dir);
1174 ptr = strchr(mnt.mnt_fsname, '/');
1175 while (ptr && *ptr == '/')
1177 /* thanks to the call to llapi_is_lustre_mnt() above,
1178 * we are sure that mnt.mnt_fsname contains ":/",
1179 * so ptr should never be NULL */
1183 while (*ptr_end != '/' && *ptr_end != '\0')
1186 /* Check the fsname for a match, if given */
1187 if (!(want & WANT_FSNAME) && fsname != NULL &&
1188 (strlen(fsname) > 0) &&
1189 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1192 /* If the path isn't set return the first one we find */
1193 if (path == NULL || strlen(path) == 0) {
1194 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1195 mntdir[strlen(mnt.mnt_dir)] = '\0';
1196 if ((want & WANT_FSNAME) && fsname != NULL) {
1197 strncpy(fsname, ptr, ptr_end - ptr);
1198 fsname[ptr_end - ptr] = '\0';
1202 /* Otherwise find the longest matching path */
1203 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1204 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1205 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1206 mntdir[strlen(mnt.mnt_dir)] = '\0';
1208 if ((want & WANT_FSNAME) && fsname != NULL) {
1209 strncpy(fsname, ptr, ptr_end - ptr);
1210 fsname[ptr_end - ptr] = '\0';
1219 if ((want & WANT_PATH) && path != NULL) {
1220 strncpy(path, mntdir, strlen(mntdir));
1221 path[strlen(mntdir)] = '\0';
1223 if (want & WANT_FD) {
1224 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1227 llapi_error(LLAPI_MSG_ERROR, rc,
1228 "cannot open '%s': %s", mntdir,
1235 } else if (want & WANT_ERROR)
1236 llapi_err_noerrno(LLAPI_MSG_ERROR,
1237 "'%s' not on a mounted Lustre filesystem",
1238 (want & WANT_PATH) ? fsname : path);
1243 * search lustre mounts
1245 * Calling this function will return to the user the mount point, mntdir, and
1246 * the file system name, fsname, if the user passed a buffer to this routine.
1248 * The user inputs are pathname and index. If the pathname is supplied then
1249 * the value of the index will be ignored. The pathname will return data if
1250 * the pathname is located on a lustre mount. Index is used to pick which
1251 * mount point you want in the case of multiple mounted lustre file systems.
1252 * See function lfs_osts in lfs.c for an example of the index use.
1254 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1257 int want = WANT_PATH, idx = -1;
1259 if (!pathname || pathname[0] == '\0') {
1263 strcpy(mntdir, pathname);
1266 want |= WANT_FSNAME;
1267 return get_root_path(want, fsname, NULL, mntdir, idx);
1270 /* Given a path, find the corresponding Lustre fsname */
1271 int llapi_search_fsname(const char *pathname, char *fsname)
1276 path = realpath(pathname, NULL);
1278 char tmp[PATH_MAX - 1];
1284 if (pathname[0] != '/') {
1285 /* Need an absolute path, but realpath() only works for
1286 * pathnames that actually exist. We go through the
1287 * extra hurdle of dirname(getcwd() + pathname) in
1288 * case the relative pathname contains ".." in it. */
1289 char realpath[PATH_MAX - 1];
1291 if (getcwd(realpath, sizeof(realpath) - 2) == NULL) {
1293 llapi_error(LLAPI_MSG_ERROR, rc,
1294 "cannot get current working directory");
1298 rc = snprintf(tmp, sizeof(tmp), "%s/", realpath);
1299 if (rc >= sizeof(tmp)) {
1301 llapi_error(LLAPI_MSG_ERROR, rc,
1302 "invalid parent path '%s'",
1308 rc = snprintf(buf, sizeof(buf), "%s%s", tmp, pathname);
1309 if (rc >= sizeof(buf)) {
1311 llapi_error(LLAPI_MSG_ERROR, rc,
1312 "invalid path '%s'", pathname);
1315 path = realpath(buf, NULL);
1317 ptr = strrchr(buf, '/');
1319 llapi_error(LLAPI_MSG_ERROR |
1320 LLAPI_MSG_NO_ERRNO, 0,
1321 "cannot resolve path '%s'",
1326 path = realpath(buf, NULL);
1329 llapi_error(LLAPI_MSG_ERROR, rc,
1330 "cannot resolve path '%s'",
1336 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1341 int llapi_search_rootpath(char *pathname, const char *fsname)
1343 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1346 int llapi_getname(const char *path, char *buf, size_t size)
1348 struct obd_uuid uuid_buf;
1349 char *uuid = uuid_buf.uuid;
1351 int rc, len, fsname_len;
1353 memset(&uuid_buf, 0, sizeof(uuid_buf));
1354 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1359 * We want to turn testfs-clilov-ffff88002738bc00 into
1360 * testfs-ffff88002738bc00 in a portable way that doesn't depend
1361 * on what is after "-clilov-" as it may change in the future.
1362 * Unfortunately, the "fsname" part may contain a dash, so we
1363 * can't just skip to the first dash, and the "instance" may be a
1364 * UUID in the future, so we can't necessarily go to the last dash.
1366 cfg_instance = strstr(uuid, "-clilov-");
1370 fsname_len = cfg_instance - uuid;
1371 cfg_instance += strlen("-clilov-");
1372 len = snprintf(buf, size, "%.*s-%s", fsname_len, uuid, cfg_instance);
1381 * Get the list of pool members.
1382 * \param poolname string of format \<fsname\>.\<poolname\>
1383 * \param members caller-allocated array of char*
1384 * \param list_size size of the members array
1385 * \param buffer caller-allocated buffer for storing OST names
1386 * \param buffer_size size of the buffer
1388 * \return number of members retrieved for this pool
1389 * \retval -error failure
1391 int llapi_get_poolmembers(const char *poolname, char **members,
1392 int list_size, char *buffer, int buffer_size)
1394 char fsname[PATH_MAX];
1403 /* name is FSNAME.POOLNAME */
1404 if (strlen(poolname) >= sizeof(fsname))
1407 snprintf(fsname, sizeof(fsname), "%s", poolname);
1408 pool = strchr(fsname, '.');
1415 rc = poolpath(&pathname, fsname, NULL);
1417 llapi_error(LLAPI_MSG_ERROR, rc,
1418 "Lustre filesystem '%s' not found",
1423 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1424 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1425 cfs_free_param_data(&pathname);
1426 if (rc >= sizeof(buf))
1428 fd = fopen(buf, "r");
1431 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1436 while (fgets(buf, sizeof(buf), fd) != NULL) {
1437 if (nb_entries >= list_size) {
1441 buf[sizeof(buf) - 1] = '\0';
1443 tmp = strchr(buf, '\n');
1446 if (used + strlen(buf) + 1 > buffer_size) {
1451 strcpy(buffer + used, buf);
1452 members[nb_entries] = buffer + used;
1453 used += strlen(buf) + 1;
1463 * Get the list of pools in a filesystem.
1464 * \param name filesystem name or path
1465 * \param poollist caller-allocated array of char*
1466 * \param list_size size of the poollist array
1467 * \param buffer caller-allocated buffer for storing pool names
1468 * \param buffer_size size of the buffer
1470 * \return number of pools retrieved for this filesystem
1471 * \retval -error failure
1473 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1474 char *buffer, int buffer_size)
1476 char rname[PATH_MAX];
1481 struct dirent *pool;
1483 unsigned int nb_entries = 0;
1484 unsigned int used = 0;
1487 /* initialize output array */
1488 for (i = 0; i < list_size; i++)
1491 /* is name a pathname ? */
1492 ptr = strchr(name, '/');
1494 /* only absolute pathname is supported */
1498 if (!realpath(name, rname)) {
1500 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1505 fsname = strdup(rname);
1509 rc = poolpath(&pathname, NULL, rname);
1511 /* name is FSNAME */
1512 fsname = strdup(name);
1515 rc = poolpath(&pathname, fsname, NULL);
1518 llapi_error(LLAPI_MSG_ERROR, rc,
1519 "Lustre filesystem '%s' not found", name);
1523 dir = opendir(pathname.gl_pathv[0]);
1526 llapi_error(LLAPI_MSG_ERROR, rc,
1527 "Could not open pool list for '%s'",
1534 pool = readdir(dir);
1540 /* ignore . and .. */
1541 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1544 /* check output bounds */
1545 if (nb_entries >= list_size) {
1547 goto free_dir_no_msg;
1550 /* +2 for '.' and final '\0' */
1551 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1554 goto free_dir_no_msg;
1557 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1558 poollist[nb_entries] = buffer + used;
1559 used += strlen(pool->d_name) + strlen(fsname) + 2;
1565 llapi_error(LLAPI_MSG_ERROR, rc,
1566 "Error reading pool list for '%s'", name);
1568 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1573 cfs_free_param_data(&pathname);
1576 return rc != 0 ? rc : nb_entries;
1579 /* wrapper for lfs.c and obd.c */
1580 int llapi_poollist(const char *name)
1582 /* list of pool names (assume that pool count is smaller
1584 char **list, *buffer = NULL, *fsname = (char *)name;
1585 char *poolname = NULL, *tmp = NULL, data[16];
1586 enum param_filter type = FILTER_BY_PATH;
1587 int obdcount, bufsize, rc, nb, i;
1592 if (name[0] != '/') {
1593 fsname = strdup(name);
1597 poolname = strchr(fsname, '.');
1600 type = FILTER_BY_FS_NAME;
1603 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1604 data, sizeof(data));
1607 obdcount = atoi(data);
1609 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1610 * and also an array to store the pointers for all that
1611 * allocated space. */
1613 bufsize = sizeof(struct obd_uuid) * obdcount;
1614 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1615 if (buffer == NULL) {
1619 list = (char **) (buffer + bufsize);
1622 /* name is a path or fsname */
1623 nb = llapi_get_poollist(name, list, obdcount,
1626 /* name is a pool name (<fsname>.<poolname>) */
1627 nb = llapi_get_poolmembers(name, list, obdcount,
1631 if (nb == -EOVERFLOW) {
1634 goto retry_get_pools;
1637 for (i = 0; i < nb; i++)
1638 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1639 rc = (nb < 0 ? nb : 0);
1643 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1648 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1649 void *data, struct dirent64 *de);
1651 #define OBD_NOT_FOUND (-1)
1653 static int common_param_init(struct find_param *param, char *path)
1655 int lum_size = get_mds_md_size(path);
1660 /* migrate has fp_lmv_md initialized outside */
1661 if (param->fp_migrate)
1664 if (lum_size < PATH_MAX + 1)
1665 lum_size = PATH_MAX + 1;
1667 param->fp_lum_size = lum_size;
1668 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1669 if (param->fp_lmd == NULL) {
1670 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1671 "error: allocation of %zu bytes for ioctl",
1672 sizeof(lstat_t) + param->fp_lum_size);
1676 param->fp_lmv_stripe_count = 256;
1677 param->fp_lmv_md = calloc(1,
1678 lmv_user_md_size(param->fp_lmv_stripe_count,
1679 LMV_USER_MAGIC_SPECIFIC));
1680 if (param->fp_lmv_md == NULL) {
1681 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1682 "error: allocation of %d bytes for ioctl",
1683 lmv_user_md_size(param->fp_lmv_stripe_count,
1684 LMV_USER_MAGIC_SPECIFIC));
1688 param->fp_got_uuids = 0;
1689 param->fp_obd_indexes = NULL;
1690 param->fp_obd_index = OBD_NOT_FOUND;
1691 param->fp_mdt_index = OBD_NOT_FOUND;
1695 static void find_param_fini(struct find_param *param)
1697 if (param->fp_migrate)
1700 if (param->fp_obd_indexes)
1701 free(param->fp_obd_indexes);
1704 free(param->fp_lmd);
1706 if (param->fp_lmv_md)
1707 free(param->fp_lmv_md);
1710 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1711 struct dirent64 *de)
1713 struct find_param *param = data;
1719 /* set errno upon failure */
1720 static DIR *opendir_parent(const char *path)
1726 path_copy = strdup(path);
1727 if (path_copy == NULL)
1730 parent_path = dirname(path_copy);
1731 parent = opendir(parent_path);
1737 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1742 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1743 if (param->fp_get_default_lmv)
1744 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1746 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1748 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1749 if (errno == E2BIG && ret != 0) {
1753 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1754 if (stripe_count <= param->fp_lmv_stripe_count)
1757 free(param->fp_lmv_md);
1758 param->fp_lmv_stripe_count = stripe_count;
1759 lmv_size = lmv_user_md_size(stripe_count,
1760 LMV_USER_MAGIC_SPECIFIC);
1761 param->fp_lmv_md = malloc(lmv_size);
1762 if (param->fp_lmv_md == NULL) {
1763 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1764 "error: allocation of %d bytes for ioctl",
1765 lmv_user_md_size(param->fp_lmv_stripe_count,
1766 LMV_USER_MAGIC_SPECIFIC));
1774 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1775 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1777 struct lov_user_mds_data *lmd = lmdbuf;
1778 lstat_t *st = &lmd->lmd_st;
1781 if (parent_fd < 0 && dir_fd < 0)
1783 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1787 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1788 * and returns struct lov_user_mds_data, while
1789 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1791 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1792 LL_IOC_LOV_GETSTRIPE,
1794 } else if (parent_fd >= 0) {
1795 char *fname = strrchr(path, '/');
1797 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1798 * the parent directory) and returns struct lov_user_mds_data,
1799 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1801 * This avoids opening, locking, and closing each file on the
1802 * client if that is not needed. Multiple of these ioctl() can
1803 * be done on the parent dir with a single open for all
1804 * files in that directory, and it also doesn't pollute the
1805 * client dcache with millions of dentries when traversing
1806 * a large filesystem.
1808 fname = (fname == NULL ? path : fname + 1);
1810 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1813 else if (ret >= lmdlen || ret++ == 0)
1816 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1817 IOC_MDC_GETFILEINFO :
1818 IOC_MDC_GETFILESTRIPE, lmdbuf);
1821 if (ret && type == GET_LMD_INFO) {
1822 if (errno == ENOTTY) {
1823 /* ioctl is not supported, it is not a lustre fs.
1824 * Do the regular lstat(2) instead.
1826 ret = lstat_f(path, st);
1829 llapi_error(LLAPI_MSG_ERROR, ret,
1830 "error: %s: lstat failed for %s",
1833 } else if (errno == ENOENT) {
1835 llapi_error(LLAPI_MSG_WARN, ret,
1836 "warning: %s does not exist", path);
1837 } else if (errno != EISDIR && errno != ENODATA) {
1839 llapi_error(LLAPI_MSG_ERROR, ret,
1840 "%s ioctl failed for %s.",
1841 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1842 "IOC_MDC_GETFILEINFO", path);
1849 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1850 int lmdlen, enum get_lmd_info_type type)
1856 parent_fd = dirfd(parent);
1858 dir_fd = dirfd(dir);
1860 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1863 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1864 semantic_func_t sem_init,
1865 semantic_func_t sem_fini, void *data,
1866 struct dirent64 *de)
1868 struct find_param *param = (struct find_param *)data;
1869 struct dirent64 *dent;
1877 if (!d && errno != ENOTDIR) {
1879 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1882 } else if (!d && !parent) {
1883 /* ENOTDIR. Open the parent dir. */
1884 p = opendir_parent(path);
1891 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1897 while ((dent = readdir64(d)) != NULL) {
1900 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1904 if ((len + dent->d_reclen + 2) > size) {
1905 llapi_err_noerrno(LLAPI_MSG_ERROR,
1906 "error: %s: string buffer too small",
1911 strcat(path, dent->d_name);
1913 if (dent->d_type == DT_UNKNOWN) {
1914 lstat_t *st = ¶m->fp_lmd->lmd_st;
1916 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1917 param->fp_lum_size, GET_LMD_INFO);
1919 dent->d_type = IFTODT(st->st_mode);
1926 switch (dent->d_type) {
1928 llapi_err_noerrno(LLAPI_MSG_ERROR,
1929 "error: %s: '%s' is UNKNOWN type %d",
1930 __func__, dent->d_name, dent->d_type);
1933 rc = llapi_semantic_traverse(path, size, d, sem_init,
1934 sem_fini, data, dent);
1935 if (rc != 0 && ret == 0)
1941 rc = sem_init(path, d, NULL, data, dent);
1942 if (rc < 0 && ret == 0) {
1947 if (sem_fini && rc == 0)
1948 sem_fini(path, d, NULL, data, dent);
1956 sem_fini(path, parent, &d, data, de);
1965 static int param_callback(char *path, semantic_func_t sem_init,
1966 semantic_func_t sem_fini, struct find_param *param)
1968 int ret, len = strlen(path);
1971 if (len > PATH_MAX) {
1973 llapi_error(LLAPI_MSG_ERROR, ret,
1974 "Path name '%s' is too long", path);
1978 buf = (char *)malloc(PATH_MAX + 1);
1982 snprintf(buf, PATH_MAX + 1, "%s", path);
1983 ret = common_param_init(param, buf);
1987 param->fp_depth = 0;
1989 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1990 sem_fini, param, NULL);
1992 find_param_fini(param);
1994 return ret < 0 ? ret : 0;
1997 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1999 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
2003 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
2008 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
2010 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
2013 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
2018 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
2022 fd = open(path, O_RDONLY | O_NONBLOCK);
2025 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2029 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2035 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2039 fd = open(path, O_RDONLY | O_NONBLOCK);
2042 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2046 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2058 * If uuidp is NULL, return the number of available obd uuids.
2059 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2060 * there are more OSTs than allocated to uuidp, then an error is returned with
2061 * the ost_count set to number of available obd uuids.
2063 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2064 int *ost_count, enum tgt_type type)
2066 char buf[PATH_MAX], format[32];
2067 int rc = 0, index = 0;
2068 struct obd_uuid name;
2072 /* Get the lov name */
2073 if (type == LOV_TYPE)
2074 rc = llapi_file_fget_lov_uuid(fd, &name);
2076 rc = llapi_file_fget_lmv_uuid(fd, &name);
2080 /* Now get the ost uuids */
2081 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2082 FILTER_BY_EXACT, "target_obd", ¶m);
2086 fp = fopen(param.gl_pathv[0], "r");
2089 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2094 snprintf(format, sizeof(format),
2095 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2096 while (fgets(buf, sizeof(buf), fp) != NULL) {
2097 if (uuidp && (index < *ost_count)) {
2098 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2106 if (uuidp && (index > *ost_count))
2111 cfs_free_param_data(¶m);
2115 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2117 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2120 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2125 root = open(mnt, O_RDONLY | O_DIRECTORY);
2128 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2133 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2141 /* Check if user specified value matches a real uuid. Ignore _UUID,
2142 * -osc-4ba41334, other trailing gunk in comparison.
2143 * @param real_uuid ends in "_UUID"
2144 * @param search_uuid may or may not end in "_UUID"
2146 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2148 int cmplen = strlen(real_uuid);
2149 int searchlen = strlen(search_uuid);
2151 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2153 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2156 /* The UUIDs may legitimately be different lengths, if
2157 * the system was upgraded from an older version. */
2158 if (cmplen != searchlen)
2161 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2164 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2165 * returned in param->fp_obd_index */
2166 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2168 struct obd_uuid obd_uuid;
2175 if (param->fp_got_uuids)
2178 /* Get the lov/lmv name */
2179 if (param->fp_get_lmv)
2180 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2182 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2184 if (rc != -ENOTTY) {
2185 llapi_error(LLAPI_MSG_ERROR, rc,
2186 "error: can't get %s name: %s",
2187 param->fp_get_lmv ? "lmv" : "lov",
2195 param->fp_got_uuids = 1;
2197 /* Now get the ost uuids */
2198 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2199 obd_uuid.uuid, FILTER_BY_EXACT,
2200 "target_obd", ¶m_data);
2204 fp = fopen(param_data.gl_pathv[0], "r");
2207 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2208 param_data.gl_pathv[0]);
2212 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2213 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2214 param->fp_get_lmv ? "MDTS" : "OBDS");
2216 snprintf(format, sizeof(format),
2217 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2218 while (fgets(buf, sizeof(buf), fp) != NULL) {
2221 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2224 if (param->fp_obd_uuid) {
2225 if (llapi_uuid_match(obd_uuid.uuid,
2226 param->fp_obd_uuid->uuid)) {
2227 param->fp_obd_index = index;
2230 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2231 /* Print everything */
2232 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2235 param->fp_obds_printed = 1;
2239 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2240 llapi_err_noerrno(LLAPI_MSG_ERROR,
2241 "error: %s: unknown obduuid: %s",
2242 __func__, param->fp_obd_uuid->uuid);
2246 cfs_free_param_data(¶m_data);
2250 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2251 * obd index for all these obduuids will be returned in
2252 * param->fp_obd_indexes */
2253 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2254 int num_obds, int **obdindexes, int *obdindex,
2257 int ret, obdcount, obd_valid = 0, obdnum;
2259 struct obd_uuid *uuids = NULL;
2263 if (type == LOV_TYPE)
2264 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2266 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2270 obdcount = atoi(buf);
2271 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2276 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2278 if (ret == -EOVERFLOW) {
2279 struct obd_uuid *uuids_temp;
2281 uuids_temp = realloc(uuids, obdcount *
2282 sizeof(struct obd_uuid));
2283 if (uuids_temp != NULL) {
2285 goto retry_get_uuids;
2290 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2294 indexes = malloc(num_obds * sizeof(*obdindex));
2295 if (indexes == NULL) {
2300 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2303 /* The user may have specified a simple index */
2304 i = strtol(obduuids[obdnum].uuid, &end, 0);
2305 if (end && *end == '\0' && i < obdcount) {
2306 indexes[obdnum] = i;
2309 for (i = 0; i < obdcount; i++) {
2310 if (llapi_uuid_match(uuids[i].uuid,
2311 obduuids[obdnum].uuid)) {
2312 indexes[obdnum] = i;
2318 if (i >= obdcount) {
2319 indexes[obdnum] = OBD_NOT_FOUND;
2320 llapi_err_noerrno(LLAPI_MSG_ERROR,
2321 "invalid obduuid '%s'",
2322 obduuids[obdnum].uuid);
2328 *obdindex = OBD_NOT_FOUND;
2330 *obdindex = obd_valid;
2332 *obdindexes = indexes;
2340 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2344 if (param->fp_mdt_uuid) {
2345 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2347 ¶m->fp_mdt_indexes,
2348 ¶m->fp_mdt_index, LMV_TYPE);
2353 if (param->fp_obd_uuid) {
2354 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2356 ¶m->fp_obd_indexes,
2357 ¶m->fp_obd_index, LOV_TYPE);
2362 param->fp_got_uuids = 1;
2367 int llapi_ostlist(char *path, struct find_param *param)
2372 fd = open(path, O_RDONLY | O_DIRECTORY);
2376 ret = setup_obd_uuid(fd, path, param);
2383 * Tries to determine the default stripe attributes for a given filesystem. The
2384 * filesystem to check should be specified by fsname, or will be determined
2387 static int sattr_get_defaults(const char *const fsname,
2388 unsigned int *scount,
2389 unsigned int *ssize,
2390 unsigned int *soffset)
2396 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2397 "stripecount", val, sizeof(val));
2400 *scount = atoi(val);
2404 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2405 "stripesize", val, sizeof(val));
2412 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2413 "stripeoffset", val, sizeof(val));
2416 *soffset = atoi(val);
2423 * Tries to gather the default stripe attributes for a given filesystem. If
2424 * the attributes can be determined, they are cached for easy retreival the
2425 * next time they are needed. Only a single filesystem's attributes are
2428 int sattr_cache_get_defaults(const char *const fsname,
2429 const char *const pathname, unsigned int *scount,
2430 unsigned int *ssize, unsigned int *soffset)
2433 char fsname[PATH_MAX + 1];
2434 unsigned int stripecount;
2435 unsigned int stripesize;
2436 unsigned int stripeoffset;
2442 char fsname_buf[PATH_MAX + 1];
2443 unsigned int tmp[3];
2445 if (fsname == NULL) {
2446 rc = llapi_search_fsname(pathname, fsname_buf);
2450 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2453 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2455 * Ensure all 3 sattrs (count, size, and offset) are
2456 * successfully retrieved and stored in tmp before writing to
2459 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2463 cache.stripecount = tmp[0];
2464 cache.stripesize = tmp[1];
2465 cache.stripeoffset = tmp[2];
2466 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2470 *scount = cache.stripecount;
2472 *ssize = cache.stripesize;
2474 *soffset = cache.stripeoffset;
2479 static char *layout2name(__u32 layout_pattern)
2481 if (layout_pattern == LOV_PATTERN_MDT)
2483 else if (layout_pattern == LOV_PATTERN_RAID0)
2485 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2491 enum lov_dump_flags {
2492 LDF_IS_DIR = 0x0001,
2493 LDF_IS_RAW = 0x0002,
2494 LDF_INDENT = 0x0004,
2495 LDF_SKIP_OBJS = 0x0008,
2499 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2500 struct lov_user_ost_data_v1 *objects,
2501 enum llapi_layout_verbose verbose,
2502 int depth, char *pool_name,
2503 enum lov_dump_flags flags)
2505 bool is_dir = flags & LDF_IS_DIR;
2506 bool is_raw = flags & LDF_IS_RAW;
2507 bool indent = flags & LDF_INDENT;
2508 bool yaml = flags & LDF_YAML;
2509 bool skip_objs = flags & LDF_SKIP_OBJS;
2510 char *prefix = is_dir ? "" : "lmm_";
2511 char *separator = "";
2512 char *space = indent ? " " : "";
2515 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2516 lmm_oi_set_seq(&lum->lmm_oi, 0);
2517 if (!indent && (verbose & VERBOSE_DETAIL))
2518 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2521 if (!yaml && !indent && depth && path &&
2522 ((verbose != VERBOSE_OBJID) || !is_dir))
2523 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2525 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2526 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2527 space, prefix, lum->lmm_magic);
2528 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2530 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2531 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2533 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2535 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2540 if (verbose & ~VERBOSE_DFID)
2541 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2543 /* This needs a bit of hand-holding since old 1.x lmm_oi
2544 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2545 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2546 * a real FID. Ideally the 2.x code would have stored this
2547 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2548 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2549 * worked properly (especially since IGIF FIDs use mds_inum as
2550 * the FID SEQ), but unfortunately that didn't happen.
2552 * Print it to look like an IGIF FID, even though the fields
2553 * are reversed on disk, so that it makes sense to userspace.
2555 * Don't use ostid_id() and ostid_seq(), since they assume the
2556 * oi_fid fields are in the right order. This is why there are
2557 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2559 * For newer layout types hopefully this will be a real FID. */
2560 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2561 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2562 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2563 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2564 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2566 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2569 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2573 if (verbose & VERBOSE_STRIPE_COUNT) {
2574 if (verbose & ~VERBOSE_STRIPE_COUNT)
2575 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2578 if (!is_raw && lum->lmm_stripe_count == 0 &&
2579 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2580 unsigned int scount;
2581 rc = sattr_cache_get_defaults(NULL, path,
2585 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2588 llapi_error(LLAPI_MSG_ERROR, rc,
2589 "Cannot determine default"
2592 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2593 lum->lmm_stripe_count ==
2594 (typeof(lum->lmm_stripe_count))(-1)
2595 ? -1 : lum->lmm_stripe_count);
2598 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2599 (__s16)lum->lmm_stripe_count);
2601 if (!yaml && is_dir)
2607 if (verbose & VERBOSE_STRIPE_SIZE) {
2608 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2609 if (verbose & ~VERBOSE_STRIPE_SIZE)
2610 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2612 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2614 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2617 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2619 llapi_error(LLAPI_MSG_ERROR, rc,
2620 "Cannot determine default"
2623 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2624 lum->lmm_stripe_size);
2626 if (!yaml && is_dir)
2632 if ((verbose & VERBOSE_PATTERN)) {
2633 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2634 if (verbose & ~VERBOSE_PATTERN)
2635 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2637 if (lov_pattern_supported(lum->lmm_pattern))
2638 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2639 layout2name(lum->lmm_pattern));
2641 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2642 separator = (!yaml && is_dir) ? " " : "\n";
2645 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2646 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2647 if (verbose & ~VERBOSE_GENERATION)
2648 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2650 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2651 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2655 if (verbose & VERBOSE_STRIPE_OFFSET) {
2656 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2657 if (verbose & ~VERBOSE_STRIPE_OFFSET)
2658 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2660 if (is_dir || skip_objs)
2661 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2662 lum->lmm_stripe_offset ==
2663 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2664 lum->lmm_stripe_offset);
2665 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2666 llapi_printf(LLAPI_MSG_NORMAL, "0");
2668 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2669 objects[0].l_ost_idx);
2670 if (!yaml && is_dir)
2676 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2677 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2678 if (verbose & ~VERBOSE_POOL)
2679 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2681 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2682 if (!yaml && is_dir)
2688 if (strlen(separator) != 0)
2689 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2692 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2693 struct lov_user_ost_data_v1 *objects,
2694 char *path, int obdindex, int depth,
2695 enum llapi_layout_verbose verbose,
2696 enum lov_dump_flags flags)
2698 bool is_dir = flags & LDF_IS_DIR;
2699 bool indent = flags & LDF_INDENT;
2700 bool skip_objs = flags & LDF_SKIP_OBJS;
2701 bool yaml = flags & LDF_YAML;
2702 bool obdstripe = obdindex == OBD_NOT_FOUND;
2705 if (!obdstripe && !skip_objs) {
2706 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2707 if (obdindex == objects[i].l_ost_idx) {
2717 lov_dump_user_lmm_header(lum, path, objects, verbose, depth, pool_name,
2720 if (!is_dir && !skip_objs && (verbose & VERBOSE_OBJID) &&
2721 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2722 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2723 char *space = " - ";
2726 llapi_printf(LLAPI_MSG_NORMAL,
2727 "%6slmm_objects:\n", " ");
2729 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2731 llapi_printf(LLAPI_MSG_NORMAL,
2732 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2734 for (i = 0; i < lum->lmm_stripe_count; i++) {
2735 int idx = objects[i].l_ost_idx;
2736 long long oid = ostid_id(&objects[i].l_ost_oi);
2737 long long gr = ostid_seq(&objects[i].l_ost_oi);
2739 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2743 struct lu_fid fid = { 0 };
2745 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2746 llapi_printf(LLAPI_MSG_NORMAL,
2747 "%sl_ost_idx: %d\n", space, idx);
2748 llapi_printf(LLAPI_MSG_NORMAL,
2749 "%8sl_fid: "DFID_NOBRACE"\n",
2751 } else if (indent) {
2752 struct lu_fid fid = { 0 };
2754 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2755 llapi_printf(LLAPI_MSG_NORMAL,
2756 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2757 space, i, idx, PFID(&fid));
2760 sprintf(fmt, "%s%s%s\n",
2761 "\t%6u\t%14llu\t%#13llx\t",
2762 (fid_seq_is_rsvd(gr) ||
2763 fid_seq_is_mdt0(gr)) ?
2764 "%14llu" : "%#14llx", "%s");
2765 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2767 obdindex == idx ? " *" : "");
2771 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2774 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2775 char *path, int obdindex, int depth,
2776 enum llapi_layout_verbose verbose,
2777 enum lov_dump_flags flags)
2779 struct lmv_user_mds_data *objects = lum->lum_objects;
2780 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2781 char *separator = "";
2782 bool yaml = flags & LDF_YAML;
2783 bool obdstripe = false;
2786 if (obdindex != OBD_NOT_FOUND) {
2787 if (lum->lum_stripe_count == 0) {
2788 if (obdindex == lum->lum_stripe_offset)
2791 for (i = 0; i < lum->lum_stripe_count; i++) {
2792 if (obdindex == objects[i].lum_mds) {
2793 llapi_printf(LLAPI_MSG_NORMAL,
2808 /* show all information default */
2810 if (lum->lum_magic == LMV_USER_MAGIC)
2811 verbose = VERBOSE_POOL | VERBOSE_STRIPE_COUNT |
2812 VERBOSE_STRIPE_OFFSET | VERBOSE_HASH_TYPE;
2814 verbose = VERBOSE_OBJID;
2817 if (depth && path && ((verbose != VERBOSE_OBJID)))
2818 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2820 if (verbose & VERBOSE_STRIPE_COUNT) {
2821 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2822 if (verbose & ~VERBOSE_STRIPE_COUNT)
2823 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2824 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2825 (int)lum->lum_stripe_count);
2826 if ((verbose & VERBOSE_STRIPE_OFFSET) && !yaml)
2832 if (verbose & VERBOSE_STRIPE_OFFSET) {
2833 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2834 if (verbose & ~VERBOSE_STRIPE_OFFSET)
2835 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2836 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2837 (int)lum->lum_stripe_offset);
2838 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2844 if (verbose & VERBOSE_HASH_TYPE) {
2845 unsigned int type = lum->lum_hash_type & LMV_HASH_TYPE_MASK;
2846 unsigned int flags = lum->lum_hash_type & ~LMV_HASH_TYPE_MASK;
2848 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2849 if (verbose & ~VERBOSE_HASH_TYPE)
2850 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2851 if (type < LMV_HASH_TYPE_MAX)
2852 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2853 mdt_hash_name[type]);
2855 llapi_printf(LLAPI_MSG_NORMAL, "%#x", type);
2857 if (flags & LMV_HASH_FLAG_MIGRATION)
2858 llapi_printf(LLAPI_MSG_NORMAL, ",migrating");
2859 if (flags & LMV_HASH_FLAG_DEAD)
2860 llapi_printf(LLAPI_MSG_NORMAL, ",dead");
2861 if (flags & LMV_HASH_FLAG_BAD_TYPE)
2862 llapi_printf(LLAPI_MSG_NORMAL, ",bad_type");
2863 if (flags & LMV_HASH_FLAG_LOST_LMV)
2864 llapi_printf(LLAPI_MSG_NORMAL, ",lost_lmv");
2869 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2870 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2871 if (lum->lum_stripe_count > 0)
2872 llapi_printf(LLAPI_MSG_NORMAL,
2873 "mdtidx\t\t FID[seq:oid:ver]\n");
2874 for (i = 0; i < lum->lum_stripe_count; i++) {
2875 int idx = objects[i].lum_mds;
2876 struct lu_fid *fid = &objects[i].lum_fid;
2877 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2878 llapi_printf(LLAPI_MSG_NORMAL,
2879 "%6u\t\t "DFID"\t\t%s\n",
2881 obdindex == idx ? " *" : "");
2886 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2887 pool_name[0] != '\0') {
2888 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2889 if (verbose & ~VERBOSE_POOL)
2890 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2892 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2896 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2897 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2900 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2901 enum lov_dump_flags flags)
2903 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2904 int depth = param->fp_max_depth;
2905 enum llapi_layout_verbose verbose = param->fp_verbose;
2906 bool yaml = flags & LDF_YAML;
2908 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2909 !(flags & LDF_IS_DIR)) && !yaml)
2910 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2912 if (verbose & VERBOSE_DETAIL) {
2913 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2914 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2915 " ", comp_v1->lcm_magic);
2916 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2917 " ", comp_v1->lcm_size);
2918 if (flags & LDF_IS_DIR)
2919 llapi_printf(LLAPI_MSG_NORMAL,
2920 "%2slcm_flags: %s\n", " ",
2921 comp_v1->lcm_mirror_count > 0 ?
2924 llapi_printf(LLAPI_MSG_NORMAL,
2925 "%2slcm_flags: %s\n", " ",
2926 llapi_layout_flags_string(comp_v1->lcm_flags));
2929 if (verbose & VERBOSE_GENERATION) {
2930 if (verbose & ~VERBOSE_GENERATION)
2931 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2933 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2936 if (verbose & VERBOSE_MIRROR_COUNT) {
2937 if (verbose & ~VERBOSE_MIRROR_COUNT)
2938 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2940 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2941 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2942 comp_v1->lcm_mirror_count + 1 : 1);
2945 if (verbose & VERBOSE_COMP_COUNT) {
2946 if (verbose & ~VERBOSE_COMP_COUNT)
2947 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2949 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2950 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2951 comp_v1->lcm_entry_count : 0);
2954 if (verbose & VERBOSE_DETAIL && !yaml)
2955 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2958 static void lcme_flags2str(__u32 comp_flags)
2964 llapi_printf(LLAPI_MSG_NORMAL, "0");
2967 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2968 if (comp_flags & comp_flags_table[i].cfn_flag) {
2970 llapi_printf(LLAPI_MSG_NORMAL, ",");
2971 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2972 comp_flags_table[i].cfn_name);
2973 comp_flags &= ~comp_flags_table[i].cfn_flag;
2979 llapi_printf(LLAPI_MSG_NORMAL, ",");
2980 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2984 static void lov_dump_comp_v1_entry(struct find_param *param,
2985 enum lov_dump_flags flags, int index)
2987 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2988 struct lov_comp_md_entry_v1 *entry;
2989 char *separator = "";
2990 enum llapi_layout_verbose verbose = param->fp_verbose;
2991 bool yaml = flags & LDF_YAML;
2993 entry = &comp_v1->lcm_entries[index];
2996 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2998 if (verbose & VERBOSE_COMP_ID) {
2999 if (verbose & VERBOSE_DETAIL && !yaml)
3000 llapi_printf(LLAPI_MSG_NORMAL,
3001 "%slcme_id: ", " - ");
3002 else if (verbose & ~VERBOSE_COMP_ID)
3003 llapi_printf(LLAPI_MSG_NORMAL,
3004 "%4slcme_id: ", " ");
3005 if (entry->lcme_id != LCME_ID_INVAL)
3006 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
3008 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
3012 if (verbose & VERBOSE_MIRROR_ID) {
3013 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3014 if (verbose & ~VERBOSE_MIRROR_ID)
3015 llapi_printf(LLAPI_MSG_NORMAL,
3016 "%4slcme_mirror_id: ", " ");
3017 if (entry->lcme_id != LCME_ID_INVAL)
3018 llapi_printf(LLAPI_MSG_NORMAL, "%u",
3019 mirror_id_of(entry->lcme_id));
3021 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
3025 if (verbose & VERBOSE_COMP_FLAGS) {
3026 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3027 if (verbose & ~VERBOSE_COMP_FLAGS)
3028 llapi_printf(LLAPI_MSG_NORMAL,
3029 "%4slcme_flags: ", " ");
3030 lcme_flags2str(entry->lcme_flags);
3033 /* print snapshot timestamp if its a nosync comp */
3034 if ((verbose & VERBOSE_COMP_FLAGS) &&
3035 (entry->lcme_flags & LCME_FL_NOSYNC)) {
3036 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3037 if (verbose & ~VERBOSE_COMP_FLAGS)
3038 llapi_printf(LLAPI_MSG_NORMAL,
3039 "%4slcme_timestamp: ", " ");
3041 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3042 entry->lcme_timestamp);
3044 time_t stamp = entry->lcme_timestamp;
3045 char *date_str = asctime(localtime(&stamp));
3047 date_str[strlen(date_str) - 1] = '\0';
3048 llapi_printf(LLAPI_MSG_NORMAL, "'%s'", date_str);
3054 if (verbose & VERBOSE_COMP_START) {
3055 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3056 if (verbose & ~VERBOSE_COMP_START)
3057 llapi_printf(LLAPI_MSG_NORMAL,
3058 "%4slcme_extent.e_start: ", " ");
3059 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3060 entry->lcme_extent.e_start);
3064 if (verbose & VERBOSE_COMP_END) {
3065 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3066 if (verbose & ~VERBOSE_COMP_END)
3067 llapi_printf(LLAPI_MSG_NORMAL,
3068 "%4slcme_extent.e_end: ", " ");
3069 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3070 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3072 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3073 entry->lcme_extent.e_end);
3078 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3079 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3080 } else if (verbose & VERBOSE_DETAIL) {
3081 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3082 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3083 " ", entry->lcme_offset);
3084 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3085 " ", entry->lcme_size);
3086 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3088 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3092 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3093 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3095 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3096 * The table below gives the answers for the specified parameters (value and
3097 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3098 * --------------------------------------
3099 * 1 | file > limit; sign > 0 | -1 / -1 |
3100 * 2 | file = limit; sign > 0 | -1 / -1 |
3101 * 3 | file < limit; sign > 0 | ? / 1 |
3102 * 4 | file > limit; sign = 0 | -1 / -1 |
3103 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3104 * 6 | file < limit; sign = 0 | ? / -1 |
3105 * 7 | file > limit; sign < 0 | 1 / 1 |
3106 * 8 | file = limit; sign < 0 | ? / -1 |
3107 * 9 | file < limit; sign < 0 | ? / -1 |
3108 * --------------------------------------
3109 * Note: 5th actually means that the value is within the interval
3110 * (limit - margin, limit]. */
3111 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3112 int sign, int negopt, unsigned long long margin,
3118 /* Drop the fraction of margin (of days). */
3119 if (file + margin <= limit)
3121 } else if (sign == 0) {
3122 if (file <= limit && file + margin > limit)
3124 else if (file + margin <= limit)
3126 } else if (sign < 0) {
3133 return negopt ? ~ret + 1 : ret;
3136 static inline struct lov_user_md *
3137 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3139 return (struct lov_user_md *)((char *)comp_v1 +
3140 comp_v1->lcm_entries[ent_idx].lcme_offset);
3143 static inline struct lov_user_ost_data_v1 *
3144 lov_v1v3_objects(struct lov_user_md *v1)
3146 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3147 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3149 return v1->lmm_objects;
3153 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3155 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3156 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3157 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3159 pool_name[0] = '\0';
3163 print_last_init_comp(struct find_param *param)
3165 /* print all component info */
3166 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3169 /* print specific component info */
3170 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3171 param->fp_check_comp_start || param->fp_check_comp_end ||
3172 param->fp_check_mirror_id || param->fp_check_mirror_index)
3178 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3182 if (param->fp_comp_end == LUSTRE_EOF) {
3183 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3184 match = end == LUSTRE_EOF ? 1 : -1;
3185 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3186 match = end == LUSTRE_EOF ? -1 : 1;
3187 else /* at least EOF */
3189 if (param->fp_exclude_comp_end)
3192 unsigned long long margin;
3194 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3195 match = find_value_cmp(end, param->fp_comp_end,
3196 param->fp_comp_end_sign,
3197 param->fp_exclude_comp_end, margin, 0);
3204 * An example of "getstripe -v" for a two components PFL file:
3207 * lcm_magic: 0x0BD60BD0
3211 * lcm_entry_count: 2
3215 * lcme_extent.e_start: 0
3216 * lcme_extent.e_end: 1048576
3220 * lmm_magic: 0x0BD10BD0
3221 * lmm_seq: 0x200000401
3222 * lmm_object_id: 0x1
3223 * lmm_fid: [0x200000401:0x1:0x0]
3224 * lmm_stripe_count: 1
3225 * lmm_stripe_size: 1048576
3226 * lmm_pattern: raid0
3228 * lmm_stripe_offset: 0
3230 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3234 * lcme_extent.e_start: 1048576
3235 * lcme_extent.e_end: EOF
3239 * lmm_magic: 0x0BD10BD0
3240 * lmm_seq: 0x200000401
3241 * lmm_object_id: 0x1
3242 * lmm_fid: [0x200000401:0x1:0x0]
3243 * lmm_stripe_count: 2
3244 * lmm_stripe_size: 1048576
3245 * lmm_pattern: raid0
3247 * lmm_stripe_offset: 1
3249 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3250 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3252 static void lov_dump_comp_v1(struct find_param *param, char *path,
3253 enum lov_dump_flags flags)
3255 struct lov_comp_md_entry_v1 *entry;
3256 struct lov_user_ost_data_v1 *objects;
3257 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3258 struct lov_user_md_v1 *v1;
3259 char pool_name[LOV_MAXPOOLNAME + 1];
3260 int obdindex = param->fp_obd_index;
3262 bool obdstripe = false;
3263 __u16 mirror_index = 0;
3264 __u16 mirror_id = 0;
3266 if (obdindex != OBD_NOT_FOUND) {
3267 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3268 i < comp_v1->lcm_entry_count; i++) {
3269 if (!(comp_v1->lcm_entries[i].lcme_flags &
3273 v1 = lov_comp_entry(comp_v1, i);
3274 objects = lov_v1v3_objects(v1);
3276 for (j = 0; j < v1->lmm_stripe_count; j++) {
3277 if (obdindex == objects[j].l_ost_idx) {
3290 lov_dump_comp_v1_header(param, path, flags);
3292 flags |= LDF_INDENT;
3294 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3295 entry = &comp_v1->lcm_entries[i];
3297 if (param->fp_check_comp_flags) {
3298 if (((param->fp_comp_flags & entry->lcme_flags) !=
3299 param->fp_comp_flags) ||
3300 (param->fp_comp_neg_flags & entry->lcme_flags))
3304 if (param->fp_check_comp_id &&
3305 param->fp_comp_id != entry->lcme_id)
3308 if (param->fp_check_comp_start) {
3309 match = find_value_cmp(entry->lcme_extent.e_start,
3310 param->fp_comp_start,
3311 param->fp_comp_start_sign,
3313 param->fp_comp_start_units, 0);
3318 if (param->fp_check_comp_end) {
3319 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3325 if (param->fp_check_mirror_index) {
3326 if (mirror_id != mirror_id_of(entry->lcme_id)) {
3328 mirror_id = mirror_id_of(entry->lcme_id);
3331 match = find_value_cmp(mirror_index,
3332 param->fp_mirror_index,
3333 param->fp_mirror_index_sign,
3334 param->fp_exclude_mirror_index,
3338 } else if (param->fp_check_mirror_id) {
3339 if (mirror_id != mirror_id_of(entry->lcme_id))
3340 mirror_id = mirror_id_of(entry->lcme_id);
3342 match = find_value_cmp(mirror_id,
3343 param->fp_mirror_id,
3344 param->fp_mirror_id_sign,
3345 param->fp_exclude_mirror_id,
3351 if (print_last_init_comp(param)) {
3353 * if part of stripe info is needed, we'd print only
3354 * the last instantiated component info.
3356 if (entry->lcme_flags & LCME_FL_INIT)
3362 if (entry->lcme_flags & LCME_FL_INIT) {
3363 if (obdindex != OBD_NOT_FOUND) {
3364 flags |= LDF_SKIP_OBJS;
3365 v1 = lov_comp_entry(comp_v1, i);
3366 objects = lov_v1v3_objects(v1);
3368 for (j = 0; j < v1->lmm_stripe_count; j++) {
3369 if (obdindex == objects[j].l_ost_idx) {
3370 flags &= ~LDF_SKIP_OBJS;
3375 flags &= ~LDF_SKIP_OBJS;
3378 flags |= LDF_SKIP_OBJS;
3381 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3383 lov_dump_comp_v1_entry(param, flags, i);
3385 v1 = lov_comp_entry(comp_v1, i);
3386 objects = lov_v1v3_objects(v1);
3387 lov_v1v3_pool_name(v1, pool_name);
3389 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3390 param->fp_max_depth, param->fp_verbose,
3393 if (print_last_init_comp(param)) {
3395 * directory layout contains only layout template, print the
3399 i = comp_v1->lcm_entry_count - 1;
3402 flags &= ~LDF_SKIP_OBJS;
3404 lov_dump_comp_v1_entry(param, flags, i);
3406 v1 = lov_comp_entry(comp_v1, i);
3407 objects = lov_v1v3_objects(v1);
3408 lov_v1v3_pool_name(v1, pool_name);
3410 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3411 param->fp_max_depth, param->fp_verbose,
3416 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3417 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3420 static inline bool has_any_comp_options(struct find_param *param)
3422 enum llapi_layout_verbose verbose = param->fp_verbose;
3424 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3425 param->fp_check_comp_start || param->fp_check_comp_end ||
3426 param->fp_check_comp_flags)
3429 /* show full layout information, not component specific */
3430 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3433 return verbose & VERBOSE_COMP_OPTS;
3436 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3439 struct lov_user_md *lum = &orig->lmd_lmm;
3440 struct lov_user_mds_data *new;
3441 struct lov_comp_md_v1 *comp_v1;
3442 struct lov_comp_md_entry_v1 *ent;
3443 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3444 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3447 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3449 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3453 memcpy(new, orig, sizeof(lstat_t));
3455 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3456 comp_v1->lcm_magic = lum->lmm_magic;
3457 comp_v1->lcm_size = lum_off + lum_size;
3458 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3459 comp_v1->lcm_flags = 0;
3460 comp_v1->lcm_entry_count = 1;
3462 ent = &comp_v1->lcm_entries[0];
3464 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3465 ent->lcme_extent.e_start = 0;
3466 ent->lcme_extent.e_end = LUSTRE_EOF;
3467 ent->lcme_offset = lum_off;
3468 ent->lcme_size = lum_size;
3470 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3475 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3476 enum lov_dump_flags flags)
3478 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3480 if (has_any_comp_options(param)) {
3481 struct lov_user_mds_data *new_lmd, *orig_lmd;
3483 orig_lmd = param->fp_lmd;
3484 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3485 if (new_lmd != NULL) {
3486 param->fp_lmd = new_lmd;
3487 lov_dump_comp_v1(param, path, flags);
3488 param->fp_lmd = orig_lmd;
3494 if (magic == LOV_USER_MAGIC_V1) {
3495 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3496 param->fp_lmd->lmd_lmm.lmm_objects,
3497 path, param->fp_obd_index,
3498 param->fp_max_depth, param->fp_verbose,
3501 char pool_name[LOV_MAXPOOLNAME + 1];
3502 struct lov_user_ost_data_v1 *objects;
3503 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3505 snprintf(pool_name, sizeof(pool_name), "%s",
3506 lmmv3->lmm_pool_name);
3507 objects = lmmv3->lmm_objects;
3508 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3509 objects, path, param->fp_obd_index,
3510 param->fp_max_depth, param->fp_verbose,
3515 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3516 enum lov_dump_flags flags)
3520 if (param->fp_get_lmv || param->fp_get_default_lmv)
3521 magic = (__u32)param->fp_lmv_md->lum_magic;
3523 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3526 flags |= LDF_IS_RAW;
3531 case LOV_USER_MAGIC_V1:
3532 case LOV_USER_MAGIC_V3:
3533 case LOV_USER_MAGIC_SPECIFIC:
3534 lov_dump_plain_user_lmm(param, path, flags);
3537 case LMV_USER_MAGIC: {
3538 char pool_name[LOV_MAXPOOLNAME + 1];
3539 struct lmv_user_md *lum;
3541 lum = (struct lmv_user_md *)param->fp_lmv_md;
3542 snprintf(pool_name, sizeof(pool_name), "%s",
3543 lum->lum_pool_name);
3544 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3545 param->fp_max_depth, param->fp_verbose,
3549 case LOV_USER_MAGIC_COMP_V1:
3550 lov_dump_comp_v1(param, path, flags);
3553 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3554 "(expecting one of %#x %#x %#x %#x)\n",
3555 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3556 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3557 LMV_USER_MAGIC, LMV_MAGIC_V1);
3562 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3568 fname = strrchr(path, '/');
3570 /* It should be a file (or other non-directory) */
3571 if (fname == NULL) {
3572 dname = (char *)malloc(2);
3576 fname = (char *)path;
3578 dname = (char *)malloc(fname - path + 1);
3581 strncpy(dname, path, fname - path);
3582 dname[fname - path] = '\0';
3586 fd = open(dname, O_RDONLY | O_NONBLOCK);
3593 strcpy((char *)lum, fname);
3594 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3597 if (close(fd) == -1 && rc == 0)
3604 int llapi_file_lookup(int dirfd, const char *name)
3606 struct obd_ioctl_data data = { 0 };
3611 if (dirfd < 0 || name == NULL)
3614 data.ioc_version = OBD_IOCTL_VERSION;
3615 data.ioc_len = sizeof(data);
3616 data.ioc_inlbuf1 = (char *)name;
3617 data.ioc_inllen1 = strlen(name) + 1;
3619 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3621 llapi_error(LLAPI_MSG_ERROR, rc,
3622 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3627 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3633 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3634 * Return -1 or 1 if file timestamp does not or does match the given criteria
3635 * correspondingly. Return 0 if the MDS time is being checked and there are
3636 * attributes on OSTs and it is not yet clear if the timespamp matches.
3638 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3639 * updated timestamps. */
3640 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3645 /* Check if file is accepted. */
3646 if (param->fp_atime) {
3647 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3648 param->fp_asign, param->fp_exclude_atime,
3649 param->fp_time_margin, mds);
3655 if (param->fp_mtime) {
3656 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3657 param->fp_msign, param->fp_exclude_mtime,
3658 param->fp_time_margin, mds);
3662 /* If the previous check matches, but this one is not yet clear,
3663 * we should return 0 to do an RPC on OSTs. */
3668 if (param->fp_ctime) {
3669 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3670 param->fp_csign, param->fp_exclude_ctime,
3671 param->fp_time_margin, mds);
3675 /* If the previous check matches, but this one is not yet clear,
3676 * we should return 0 to do an RPC on OSTs. */
3685 * Check whether the stripes matches the indexes user provided
3689 static int check_obd_match(struct find_param *param)
3691 struct lov_user_ost_data_v1 *objects;
3692 struct lov_comp_md_v1 *comp_v1 = NULL;
3693 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3694 lstat_t *st = ¶m->fp_lmd->lmd_st;
3695 int i, j, k, count = 1;
3697 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3700 if (!S_ISREG(st->st_mode))
3703 /* Only those files should be accepted, which have a
3704 * stripe on the specified OST. */
3705 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3706 comp_v1 = (struct lov_comp_md_v1 *)v1;
3707 count = comp_v1->lcm_entry_count;
3710 for (i = 0; i < count; i++) {
3712 v1 = lov_comp_entry(comp_v1, i);
3714 objects = lov_v1v3_objects(v1);
3716 for (j = 0; j < v1->lmm_stripe_count; j++) {
3717 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3720 for (k = 0; k < param->fp_num_obds; k++) {
3721 if (param->fp_obd_indexes[k] ==
3722 objects[j].l_ost_idx)
3723 return !param->fp_exclude_obd;
3728 return param->fp_exclude_obd;
3731 static int check_mdt_match(struct find_param *param)
3735 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3738 /* FIXME: For striped dir, we should get stripe information and check */
3739 for (i = 0; i < param->fp_num_mdts; i++) {
3740 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3741 return !param->fp_exclude_mdt;
3744 if (param->fp_exclude_mdt)
3751 * Check whether the obd is active or not, if it is
3752 * not active, just print the object affected by this
3755 static int print_failed_tgt(struct find_param *param, char *path, int type)
3757 struct obd_statfs stat_buf;
3758 struct obd_uuid uuid_buf;
3761 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3764 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3765 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3766 ret = llapi_obd_statfs(path, type,
3767 param->fp_obd_index, &stat_buf,
3770 llapi_printf(LLAPI_MSG_NORMAL,
3771 "obd_uuid: %s failed %s ",
3772 param->fp_obd_uuid->uuid,
3779 static int find_check_stripe_size(struct find_param *param)
3781 struct lov_comp_md_v1 *comp_v1 = NULL;
3782 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3783 int ret, i, count = 1;
3785 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3786 comp_v1 = (struct lov_comp_md_v1 *)v1;
3787 count = comp_v1->lcm_entry_count;
3788 ret = param->fp_exclude_stripe_size ? 1 : -1;
3791 for (i = 0; i < count; i++) {
3793 v1 = lov_comp_entry(comp_v1, i);
3795 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3796 param->fp_stripe_size_sign,
3797 param->fp_exclude_stripe_size,
3798 param->fp_stripe_size_units, 0);
3799 /* If any stripe_size matches */
3807 static __u32 find_get_stripe_count(struct find_param *param)
3809 struct lov_comp_md_v1 *comp_v1 = NULL;
3810 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3812 __u32 stripe_count = 0;
3814 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3815 comp_v1 = (struct lov_comp_md_v1 *)v1;
3816 count = comp_v1->lcm_entry_count;
3819 for (i = 0; i < count; i++) {
3821 v1 = lov_comp_entry(comp_v1, i);
3822 stripe_count += v1->lmm_stripe_count;
3825 return stripe_count;
3828 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3830 static int find_check_layout(struct find_param *param)
3832 struct lov_comp_md_v1 *comp_v1 = NULL;
3833 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3835 bool found = false, valid = false;
3837 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3838 comp_v1 = (struct lov_comp_md_v1 *)v1;
3839 count = comp_v1->lcm_entry_count;
3842 for (i = 0; i < count; i++) {
3844 v1 = lov_comp_entry(comp_v1, i);
3846 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3850 if (v1->lmm_pattern & param->fp_layout) {
3859 if ((found && !param->fp_exclude_layout) ||
3860 (!found && param->fp_exclude_layout))
3866 static int find_check_pool(struct find_param *param)
3868 struct lov_comp_md_v1 *comp_v1 = NULL;
3869 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3870 struct lov_user_md_v3 *v3 = (void *)v1;
3874 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3875 comp_v1 = (struct lov_comp_md_v1 *)v1;
3876 count = comp_v1->lcm_entry_count;
3877 /* empty requested pool is taken as no pool search */
3878 if (count == 0 && param->fp_poolname[0] == '\0')
3882 for (i = 0; i < count; i++) {
3883 if (comp_v1 != NULL)
3884 v1 = lov_comp_entry(comp_v1, i);
3886 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3887 (param->fp_poolname[0] == '\0')) ||
3888 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3889 (strncmp(v3->lmm_pool_name,
3890 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3891 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3892 (strcmp(param->fp_poolname, "*") == 0))) {
3898 if ((found && !param->fp_exclude_pool) ||
3899 (!found && param->fp_exclude_pool))
3905 static int find_check_comp_options(struct find_param *param)
3907 lstat_t *st = ¶m->fp_lmd->lmd_st;
3908 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3909 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3910 struct lov_comp_md_entry_v1 *entry;
3913 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3914 comp_v1 = (struct lov_comp_md_v1 *)v1;
3916 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3917 if (forged_v1 == NULL)
3919 comp_v1 = forged_v1;
3920 comp_v1->lcm_entry_count = 1;
3921 entry = &comp_v1->lcm_entries[0];
3922 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3923 entry->lcme_extent.e_start = 0;
3924 entry->lcme_extent.e_end = LUSTRE_EOF;
3927 /* invalid case, don't match for any kind of search. */
3928 if (comp_v1->lcm_entry_count == 0) {
3933 if (param->fp_check_comp_count) {
3934 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3935 param->fp_comp_count,
3936 param->fp_comp_count_sign,
3937 param->fp_exclude_comp_count, 1, 0);
3943 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3944 entry = &comp_v1->lcm_entries[i];
3946 if (param->fp_check_comp_flags) {
3948 if (((param->fp_comp_flags & entry->lcme_flags) !=
3949 param->fp_comp_flags) ||
3950 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3956 if (param->fp_check_comp_start) {
3957 ret = find_value_cmp(entry->lcme_extent.e_start,
3958 param->fp_comp_start,
3959 param->fp_comp_start_sign,
3960 param->fp_exclude_comp_start,
3961 param->fp_comp_start_units, 0);
3966 if (param->fp_check_comp_end) {
3967 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3973 /* the component matches all criteria */
3977 if (forged_v1 != NULL)
3982 static int find_check_mirror_options(struct find_param *param)
3984 struct lov_comp_md_v1 *comp_v1;
3985 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3988 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3991 comp_v1 = (struct lov_comp_md_v1 *)v1;
3993 if (param->fp_check_mirror_count) {
3994 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3995 param->fp_mirror_count,
3996 param->fp_mirror_count_sign,
3997 param->fp_exclude_mirror_count, 1, 0);
4002 if (param->fp_check_mirror_state) {
4004 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
4006 if ((param->fp_mirror_state != 0 &&
4007 file_state != param->fp_mirror_state) ||
4008 file_state == param->fp_mirror_neg_state)
4015 static bool find_check_lmm_info(struct find_param *param)
4017 return param->fp_check_pool || param->fp_check_stripe_count ||
4018 param->fp_check_stripe_size || param->fp_check_layout ||
4019 param->fp_check_comp_count || param->fp_check_comp_end ||
4020 param->fp_check_comp_start || param->fp_check_comp_flags ||
4021 param->fp_check_mirror_count ||
4022 param->fp_check_mirror_state ||
4023 param->fp_check_projid;
4027 * Get file/directory project id.
4028 * by the open fd resides on.
4029 * Return 0 and project id on success, or -ve errno.
4031 static int fget_projid(int fd, int *projid)
4036 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
4040 *projid = fsx.fsx_projid;
4044 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
4045 void *data, struct dirent64 *de)
4047 struct find_param *param = (struct find_param *)data;
4048 DIR *dir = dirp == NULL ? NULL : *dirp;
4049 int decision = 1; /* 1 is accepted; -1 is rejected. */
4050 lstat_t *st = ¶m->fp_lmd->lmd_st;
4052 int checked_type = 0;
4054 __u32 stripe_count = 0;
4057 if (parent == NULL && dir == NULL)
4060 /* If a regular expression is presented, make the initial decision */
4061 if (param->fp_pattern != NULL) {
4062 char *fname = strrchr(path, '/');
4063 fname = (fname == NULL ? path : fname + 1);
4064 ret = fnmatch(param->fp_pattern, fname, 0);
4065 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
4066 (ret == 0 && param->fp_exclude_pattern))
4070 /* See if we can check the file type from the dirent. */
4071 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
4074 if (DTTOIF(de->d_type) == param->fp_type) {
4075 if (param->fp_exclude_type)
4078 if (!param->fp_exclude_type)
4085 /* Request MDS for the stat info if some of these parameters need
4086 * to be compared. */
4087 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4088 param->fp_check_uid || param->fp_check_gid ||
4089 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4090 param->fp_check_size || param->fp_check_blocks ||
4091 find_check_lmm_info(param) ||
4092 param->fp_check_mdt_count || param->fp_check_hash_type)
4095 if (param->fp_type != 0 && checked_type == 0)
4098 if (decision == 0) {
4099 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4100 param->fp_get_lmv = 1;
4101 ret = cb_get_dirstripe(path, dir, param);
4106 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4107 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4108 param->fp_lum_size, GET_LMD_INFO);
4109 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4110 find_check_lmm_info(param)) {
4111 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4113 /* We need to "fake" the "use the default" values
4114 * since the lmm struct is zeroed out at this point. */
4115 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4116 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4118 ostid_set_seq(&lmm->lmm_oi,
4119 FID_SEQ_LOV_DEFAULT);
4120 lmm->lmm_stripe_size = 0;
4121 lmm->lmm_stripe_count = 0;
4122 lmm->lmm_stripe_offset = -1;
4124 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4126 ret = llapi_file_fget_mdtidx(dirfd(dir),
4127 ¶m->fp_file_mdt_index);
4128 } else if (S_ISREG(st->st_mode)) {
4129 /* FIXME: we could get the MDT index from the
4130 * file's FID in lmd->lmd_lmm.lmm_oi without
4131 * opening the file, once we are sure that
4132 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4133 * That would still be an ioctl() to map the
4134 * FID to the MDT, but not an open RPC. */
4135 fd = open(path, O_RDONLY);
4137 ret = llapi_file_fget_mdtidx(fd,
4138 ¶m->fp_file_mdt_index);
4143 /* For a special file, we assume it resides on
4144 * the same MDT as the parent directory. */
4145 ret = llapi_file_fget_mdtidx(dirfd(parent),
4146 ¶m->fp_file_mdt_index);
4157 stripe_count = find_get_stripe_count(param);
4161 if (param->fp_type && !checked_type) {
4162 if ((st->st_mode & S_IFMT) == param->fp_type) {
4163 if (param->fp_exclude_type)
4166 if (!param->fp_exclude_type)
4172 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4173 if (lustre_fs && param->fp_got_uuids &&
4174 param->fp_dev != st->st_dev) {
4175 /* A lustre/lustre mount point is crossed. */
4176 param->fp_got_uuids = 0;
4177 param->fp_obds_printed = 0;
4178 param->fp_mdt_index = OBD_NOT_FOUND;
4179 param->fp_obd_index = OBD_NOT_FOUND;
4182 if (lustre_fs && !param->fp_got_uuids) {
4183 ret = setup_target_indexes(dir ? dir : parent, path,
4188 param->fp_dev = st->st_dev;
4189 } else if (!lustre_fs && param->fp_got_uuids) {
4190 /* A lustre/non-lustre mount point is crossed. */
4191 param->fp_got_uuids = 0;
4192 param->fp_mdt_index = OBD_NOT_FOUND;
4193 param->fp_obd_index = OBD_NOT_FOUND;
4197 if (param->fp_check_stripe_size) {
4198 decision = find_check_stripe_size(param);
4203 if (param->fp_check_stripe_count) {
4204 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4205 param->fp_stripe_count_sign,
4206 param->fp_exclude_stripe_count, 1, 0);
4211 if (param->fp_check_mdt_count) {
4212 decision = find_value_cmp(
4213 param->fp_lmv_md->lum_stripe_count,
4214 param->fp_mdt_count,
4215 param->fp_mdt_count_sign,
4216 param->fp_exclude_mdt_count, 1, 0);
4221 if (param->fp_check_layout) {
4222 decision = find_check_layout(param);
4227 if (param->fp_check_hash_type) {
4230 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4231 if ((found && param->fp_exclude_hash_type) ||
4232 (!found && !param->fp_exclude_hash_type)) {
4238 /* If an OBD UUID is specified but none matches, skip this file. */
4239 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4240 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4243 /* If an OST or MDT UUID is given, and some OST matches,
4245 if (param->fp_obd_index != OBD_NOT_FOUND ||
4246 param->fp_mdt_index != OBD_NOT_FOUND) {
4247 if (param->fp_obd_uuid) {
4248 if (check_obd_match(param)) {
4249 /* If no mdtuuid is given, we are done.
4250 * Otherwise, fall through to the mdtuuid
4252 if (!param->fp_mdt_uuid)
4259 if (param->fp_mdt_uuid) {
4260 if (check_mdt_match(param))
4267 if (param->fp_check_uid) {
4268 if (st->st_uid == param->fp_uid) {
4269 if (param->fp_exclude_uid)
4272 if (!param->fp_exclude_uid)
4277 if (param->fp_check_gid) {
4278 if (st->st_gid == param->fp_gid) {
4279 if (param->fp_exclude_gid)
4282 if (!param->fp_exclude_gid)
4287 if (param->fp_check_projid) {
4291 fd = open(path, O_RDONLY);
4294 ret = fget_projid(fd, &projid);
4299 if (projid == param->fp_projid) {
4300 if (param->fp_exclude_projid)
4303 if (!param->fp_exclude_projid)
4308 if (param->fp_check_pool) {
4309 decision = find_check_pool(param);
4314 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4315 param->fp_check_comp_start || param->fp_check_comp_end) {
4316 decision = find_check_comp_options(param);
4321 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4322 decision = find_check_mirror_options(param);
4327 /* Check the time on mds. */
4329 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4332 for_mds = lustre_fs ?
4333 (S_ISREG(st->st_mode) && stripe_count) : 0;
4334 decision = find_time_check(st, param, for_mds);
4339 /* If file still fits the request, ask ost for updated info.
4340 The regular stat is almost of the same speed as some new
4341 'glimpse-size-ioctl'. */
4343 if ((param->fp_check_size || param->fp_check_blocks) &&
4344 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4348 /* For regular files with the stripe the decision may have not
4349 * been taken yet if *time or size is to be checked. */
4350 if (param->fp_obd_index != OBD_NOT_FOUND)
4351 print_failed_tgt(param, path, LL_STATFS_LOV);
4353 if (param->fp_mdt_index != OBD_NOT_FOUND)
4354 print_failed_tgt(param, path, LL_STATFS_LMV);
4357 ret = fstat_f(dirfd(dir), st);
4358 else if (de != NULL)
4359 ret = fstatat_f(dirfd(parent), de->d_name, st,
4360 AT_SYMLINK_NOFOLLOW);
4362 ret = lstat_f(path, st);
4365 if (errno == ENOENT) {
4366 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4367 "warning: %s: %s does not exist",
4372 llapi_error(LLAPI_MSG_ERROR, ret,
4373 "%s: IOC_LOV_GETINFO on %s failed",
4379 /* Check the time on osc. */
4380 decision = find_time_check(st, param, 0);
4385 if (param->fp_check_size) {
4386 decision = find_value_cmp(st->st_size, param->fp_size,
4387 param->fp_size_sign,
4388 param->fp_exclude_size,
4389 param->fp_size_units, 0);
4394 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4395 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4396 param->fp_blocks_sign,
4397 param->fp_exclude_blocks,
4398 param->fp_blocks_units, 0);
4403 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4404 if (param->fp_zero_end)
4405 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4407 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4411 /* Do not get down anymore? */
4412 if (param->fp_depth == param->fp_max_depth) {
4423 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4424 void *param_data, struct dirent64 *de)
4426 struct find_param *param = (struct find_param *)param_data;
4427 struct lmv_user_md *lmu = param->fp_lmv_md;
4428 DIR *tmp_parent = parent;
4429 char raw[MAX_IOC_BUFLEN] = {'\0'};
4431 struct obd_ioctl_data data = { 0 };
4438 if (parent == NULL && dirp == NULL)
4447 if (parent == NULL) {
4448 tmp_parent = opendir_parent(path);
4449 if (tmp_parent == NULL) {
4452 llapi_error(LLAPI_MSG_ERROR, ret,
4453 "can not open %s", path);
4458 fd = dirfd(tmp_parent);
4460 path_copy = strdup(path);
4461 filename = basename(path_copy);
4463 data.ioc_inlbuf1 = (char *)filename;
4464 data.ioc_inllen1 = strlen(filename) + 1;
4465 data.ioc_inlbuf2 = (char *)lmu;
4466 data.ioc_inllen2 = lmv_user_md_size(lmu->lum_stripe_count,
4468 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4470 llapi_error(LLAPI_MSG_ERROR, ret,
4471 "llapi_obd_statfs: error packing ioctl data");
4476 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4478 if (errno == EBUSY && !retry) {
4479 /* because migrate may not be able to lock all involved
4480 * objects in order, for some of them it try lock, while
4481 * there may be conflicting COS locks and cause migrate
4482 * fail with EBUSY, hope a sync() could cause
4483 * transaction commit and release these COS locks. */
4487 } else if (errno == EALREADY) {
4488 if (param->fp_verbose & VERBOSE_DETAIL)
4489 llapi_printf(LLAPI_MSG_NORMAL,
4490 "%s was migrated to MDT%d already\n",
4491 path, lmu->lum_stripe_offset);
4495 llapi_error(LLAPI_MSG_ERROR, ret,
4496 "%s migrate failed: %s (%d)\n",
4497 path, strerror(-ret), ret);
4500 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4501 llapi_printf(LLAPI_MSG_NORMAL,
4502 "migrate %s to MDT%d stripe count %d\n",
4503 path, lmu->lum_stripe_offset,
4504 lmu->lum_stripe_count);
4509 /* If the directory is being migration, we need
4510 * close the directory after migration,
4511 * so the old directory cache will be cleanup
4512 * on the client side, and re-open to get the
4513 * new directory handle */
4514 *dirp = opendir(path);
4515 if (*dirp == NULL) {
4517 llapi_error(LLAPI_MSG_ERROR, ret,
4518 "%s: Failed to open '%s'", __func__, path);
4523 closedir(tmp_parent);
4530 /* dir migration finished, shrink its stripes */
4531 static int cb_migrate_mdt_fini(char *path, DIR *parent, DIR **dirp, void *data,
4532 struct dirent64 *de)
4534 struct find_param *param = data;
4535 struct lmv_user_md *lmu = param->fp_lmv_md;
4536 int lmulen = lmv_user_md_size(lmu->lum_stripe_count, lmu->lum_magic);
4539 if (de && de->d_type != DT_DIR)
4544 * close it before setxattr because the latter may destroy the
4545 * original object, and cause close fail.
4547 ret = closedir(*dirp);
4553 ret = setxattr(path, XATTR_NAME_LMV, lmu, lmulen, 0);
4554 if (ret == -EALREADY)
4557 cb_common_fini(path, parent, dirp, data, de);
4561 int llapi_migrate_mdt(char *path, struct find_param *param)
4563 return param_callback(path, cb_migrate_mdt_init, cb_migrate_mdt_fini,
4567 int llapi_mv(char *path, struct find_param *param)
4569 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4570 static bool printed;
4573 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4574 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4578 return llapi_migrate_mdt(path, param);
4581 int llapi_find(char *path, struct find_param *param)
4583 return param_callback(path, cb_find_init, cb_common_fini, param);
4587 * Get MDT number that the file/directory inode referenced
4588 * by the open fd resides on.
4589 * Return 0 and mdtidx on success, or -ve errno.
4591 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4593 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4598 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4599 struct dirent64 *de)
4601 struct find_param *param = (struct find_param *)data;
4602 DIR *d = dirp == NULL ? NULL : *dirp;
4606 if (parent == NULL && d == NULL)
4610 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4611 } else /* if (parent) */ {
4614 fd = open(path, O_RDONLY | O_NOCTTY);
4616 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4624 if (ret == -ENODATA) {
4625 if (!param->fp_obd_uuid)
4626 llapi_printf(LLAPI_MSG_NORMAL,
4627 "'%s' has no stripe info\n", path);
4629 } else if (ret == -ENOENT) {
4630 llapi_error(LLAPI_MSG_WARN, ret,
4631 "warning: %s: '%s' does not exist",
4634 } else if (ret == -ENOTTY) {
4635 llapi_error(LLAPI_MSG_ERROR, ret,
4636 "%s: '%s' not on a Lustre fs",
4639 llapi_error(LLAPI_MSG_ERROR, ret,
4640 "error: %s: '%s' failed get_mdtidx",
4646 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4647 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4649 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4653 /* Do not go down anymore? */
4654 if (param->fp_depth == param->fp_max_depth)
4662 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4663 struct dirent64 *de)
4665 struct find_param *param = (struct find_param *)data;
4666 DIR *d = dirp == NULL ? NULL : *dirp;
4669 if (parent == NULL && d == NULL)
4672 if (param->fp_obd_uuid) {
4673 param->fp_quiet = 1;
4674 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4679 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4680 ret = cb_get_dirstripe(path, d, param);
4682 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4683 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4684 param->fp_lum_size, GET_LMD_STRIPE);
4689 if (errno == ENODATA && d != NULL) {
4690 /* We need to "fake" the "use the default" values
4691 * since the lmm struct is zeroed out at this point.
4692 * The magic needs to be set in order to satisfy
4693 * a check later on in the code path.
4694 * The object_seq needs to be set for the "(Default)"
4695 * prefix to be displayed. */
4696 if (param->fp_get_default_lmv) {
4697 struct lmv_user_md *lum = param->fp_lmv_md;
4699 lum->lum_magic = LMV_USER_MAGIC;
4700 lum->lum_stripe_count = 0;
4701 lum->lum_stripe_offset = -1;
4703 } else if (param->fp_get_lmv) {
4704 struct lmv_user_md *lum = param->fp_lmv_md;
4707 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4710 lum->lum_magic = LMV_MAGIC_V1;
4711 lum->lum_stripe_count = 0;
4712 lum->lum_stripe_offset = mdtidx;
4715 struct lov_user_md *lmm =
4716 ¶m->fp_lmd->lmd_lmm;
4718 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4720 ostid_set_seq(&lmm->lmm_oi,
4721 FID_SEQ_LOV_DEFAULT);
4722 lmm->lmm_stripe_count = 0;
4723 lmm->lmm_stripe_size = 0;
4724 lmm->lmm_stripe_offset = -1;
4727 } else if (errno == ENODATA && parent != NULL) {
4728 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4729 llapi_printf(LLAPI_MSG_NORMAL,
4730 "%s has no stripe info\n", path);
4732 } else if (errno == ENOENT) {
4733 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4734 "warning: %s: %s does not exist",
4737 } else if (errno == ENOTTY) {
4739 llapi_error(LLAPI_MSG_ERROR, ret,
4740 "%s: '%s' not on a Lustre fs?",
4745 llapi_error(LLAPI_MSG_ERROR, ret,
4746 "error: %s: %s failed for %s",
4747 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4748 "IOC_MDC_GETFILESTRIPE", path);
4755 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4756 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4759 /* Do not get down anymore? */
4760 if (param->fp_depth == param->fp_max_depth)
4768 int llapi_getstripe(char *path, struct find_param *param)
4770 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4771 cb_get_mdt_index : cb_getstripe,
4772 cb_common_fini, param);
4775 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4776 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4778 char raw[MAX_IOC_BUFLEN] = {'\0'};
4780 struct obd_ioctl_data data = { 0 };
4783 data.ioc_inlbuf1 = (char *)&type;
4784 data.ioc_inllen1 = sizeof(__u32);
4785 data.ioc_inlbuf2 = (char *)&index;
4786 data.ioc_inllen2 = sizeof(__u32);
4787 data.ioc_pbuf1 = (char *)stat_buf;
4788 data.ioc_plen1 = sizeof(struct obd_statfs);
4789 data.ioc_pbuf2 = (char *)uuid_buf;
4790 data.ioc_plen2 = sizeof(struct obd_uuid);
4792 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4794 llapi_error(LLAPI_MSG_ERROR, rc,
4795 "llapi_obd_statfs: error packing ioctl data");
4799 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4801 return rc < 0 ? -errno : 0;
4804 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4805 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4810 fd = open(path, O_RDONLY);
4813 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4815 /* If we can't even open a file on the filesystem (e.g. with
4816 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4820 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4827 #define MAX_STRING_SIZE 128
4829 int llapi_ping(char *obd_type, char *obd_name)
4831 int flags = O_RDONLY;
4832 char buf[1] = { 0 };
4836 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4837 obd_type, obd_name);
4841 fd = open(path.gl_pathv[0], flags);
4843 if (errno == EACCES && flags == O_RDONLY) {
4848 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4853 if (flags == O_RDONLY)
4854 rc = read(fd, buf, sizeof(buf));
4856 rc = write(fd, buf, sizeof(buf));
4864 cfs_free_param_data(&path);
4868 int llapi_target_iterate(int type_num, char **obd_type,
4869 void *args, llapi_cb_t cb)
4875 for (i = 0; i < type_num; i++) {
4878 rc = cfs_get_param_paths(¶m, "%s/*/uuid", obd_type[i]);
4882 for (j = 0; j < param.gl_pathc; j++) {
4883 char obd_uuid[UUID_MAX + 1];
4887 fp = fopen(param.gl_pathv[j], "r");
4890 llapi_error(LLAPI_MSG_ERROR, rc,
4891 "error: opening '%s'",
4896 if (fgets(obd_uuid, sizeof(obd_uuid), fp) == NULL) {
4898 llapi_error(LLAPI_MSG_ERROR, rc,
4899 "error: reading '%s'",
4904 /* Extract the obd_name from the sysfs path.
4905 * 'topsysfs'/fs/lustre/'obd_type'/'obd_name'.
4907 obd_name = strstr(param.gl_pathv[j], "/fs/lustre/");
4913 /* skip /fs/lustre/'obd_type'/ */
4914 obd_name += strlen(obd_type[i]) + 12;
4915 /* chop off after obd_name */
4916 ptr = strrchr(obd_name, '/');
4920 cb(obd_type[i], obd_name, obd_uuid, args);
4929 cfs_free_param_data(¶m);
4933 static void do_target_check(char *obd_type_name, char *obd_name,
4934 char *obd_uuid, void *args)
4938 rc = llapi_ping(obd_type_name, obd_name);
4939 if (rc == ENOTCONN) {
4940 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4942 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4944 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4948 int llapi_target_check(int type_num, char **obd_type, char *dir)
4950 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4953 #undef MAX_STRING_SIZE
4955 /* Is this a lustre fs? */
4956 int llapi_is_lustre_mnttype(const char *type)
4958 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4961 /* Is this a lustre client fs? */
4962 int llapi_is_lustre_mnt(struct mntent *mnt)
4964 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4965 strstr(mnt->mnt_fsname, ":/") != NULL);
4968 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4970 char fsname[PATH_MAX + 1];
4974 rc = llapi_search_fsname(mnt, fsname);
4978 root = open(mnt, O_RDONLY | O_DIRECTORY);
4981 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4985 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4993 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4994 * format must have %s%s, buf must be > 16
4995 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4996 * then buf = "lustre-MDT0000"
4998 static int get_mdtname(char *name, char *format, char *buf)
5000 char suffix[]="-MDT0000";
5001 int len = strlen(name);
5003 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
5004 name[len - 5] = '\0';
5009 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
5012 /* Not enough room to add suffix */
5013 llapi_err_noerrno(LLAPI_MSG_ERROR,
5014 "Invalid MDT name |%s|", name);
5019 return sprintf(buf, format, name, suffix);
5022 /** ioctl on filsystem root, with mdtindex sent as data
5023 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
5024 * \param mdtidxp pointer to integer within data to be filled in with the
5025 * mdt index (0 if no mdt is specified). NULL won't be filled.
5027 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
5035 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
5036 Open root and parse mdt index. */
5037 if (mdtname[0] == '/') {
5039 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
5040 (char *)mdtname, -1);
5042 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
5044 ptr = fsname + strlen(fsname) - 8;
5046 index = strtol(ptr + 4, NULL, 16);
5047 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
5051 llapi_err_noerrno(LLAPI_MSG_ERROR,
5052 "Can't open %s: %d\n", mdtname, rc);
5059 rc = ioctl(fd, opc, data);
5068 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
5069 int buflen, long long *recno, int *linkno)
5071 const char *fidstr_orig = fidstr;
5073 struct getinfo_fid2path *gf;
5078 while (*fidstr == '[')
5081 sscanf(fidstr, SFID, RFID(&fid));
5082 if (!fid_is_sane(&fid)) {
5083 llapi_err_noerrno(LLAPI_MSG_ERROR,
5084 "bad FID format '%s', should be [seq:oid:ver]"
5085 " (e.g. "DFID")\n", fidstr_orig,
5086 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
5090 gf = malloc(sizeof(*gf) + buflen);
5095 gf->gf_recno = *recno;
5096 gf->gf_linkno = *linkno;
5097 gf->gf_pathlen = buflen;
5099 /* Take path or fsname */
5100 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
5105 /* strip out instances of // */
5106 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
5107 if ((*a == '/') && (*(a + 1) == '/'))
5114 if (buf[0] == '\0') { /* ROOT path */
5119 *recno = gf->gf_recno;
5120 *linkno = gf->gf_linkno;
5127 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
5130 struct lustre_mdt_attrs *lma;
5134 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
5136 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
5139 lma = (struct lustre_mdt_attrs *)buf;
5140 fid_le_to_cpu(fid, &lma->lma_self_fid);
5144 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
5149 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5158 int llapi_fd2fid(int fd, struct lu_fid *fid)
5162 memset(fid, 0, sizeof(*fid));
5164 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5165 if (rc == -EINVAL || rc == -ENOTTY)
5166 rc = fid_from_lma(NULL, fd, fid);
5171 int llapi_path2fid(const char *path, struct lu_fid *fid)
5175 memset(fid, 0, sizeof(*fid));
5176 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5178 if (errno == ELOOP || errno == ENXIO)
5179 return fid_from_lma(path, -1, fid);
5183 rc = llapi_fd2fid(fd, fid);
5184 if (rc == -EINVAL || rc == -ENOTTY)
5185 rc = fid_from_lma(path, -1, fid);
5191 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5192 char *name, size_t name_size)
5194 struct getparent *gp;
5197 gp = malloc(sizeof(*gp) + name_size);
5201 gp->gp_linkno = linkno;
5202 gp->gp_name_size = name_size;
5204 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5210 *parent_fid = gp->gp_fid;
5212 strncpy(name, gp->gp_name, name_size);
5213 name[name_size - 1] = '\0';
5220 int llapi_path2parent(const char *path, unsigned int linkno,
5221 struct lu_fid *parent_fid, char *name, size_t name_size)
5226 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5230 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5235 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5240 root = open(mnt, O_RDONLY | O_DIRECTORY);
5243 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5247 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5250 llapi_error(LLAPI_MSG_ERROR, rc,
5251 "ioctl on %s for getting connect flags failed", mnt);
5258 * Get a 64-bit value representing the version of file data pointed by fd.
5260 * Each write or truncate, flushed on OST, will change this value. You can use
5261 * this value to verify if file data was modified. This only checks the file
5262 * data, not metadata.
5264 * \param flags 0: no flush pages, usually used it the process has already
5266 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5268 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5269 * pages from clients.
5271 * \retval 0 on success.
5272 * \retval -errno on error.
5274 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5277 struct ioc_data_version idv;
5279 idv.idv_flags = (__u32)flags;
5281 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5285 *data_version = idv.idv_version;
5291 * Flush cached pages from all clients.
5293 * \param fd File descriptor
5297 int llapi_file_flush(int fd)
5301 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5305 * Fetch layout version from OST objects. Layout version on OST objects are
5306 * only set when the file is a mirrored file AND after the file has been
5307 * written at least once.
5309 * It actually fetches the least layout version from the objects.
5311 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5314 struct ioc_data_version idv = { 0 };
5316 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5320 *layout_version = idv.idv_layout_version;
5326 * Create a file without any name and open it for read/write
5328 * - file is created as if it were a standard file in the given \a directory
5329 * - file does not appear in \a directory and mtime does not change because
5330 * the filename is handled specially by the Lustre MDS.
5331 * - file is destroyed at final close
5333 * \param[in] directory directory from which to inherit layout/MDT idx
5334 * \param[in] mdt_idx MDT index on which the file is created,
5335 * \a idx == -1 means no specific MDT is requested
5336 * \param[in] mode standard open(2) mode
5337 * \param[in] stripe_param stripe parameters. May be NULL.
5339 * \retval a file descriptor on success.
5340 * \retval -errno on error.
5342 int llapi_create_volatile_param(const char *directory, int mdt_idx,
5343 int open_flags, mode_t mode,
5344 const struct llapi_stripe_param *stripe_param)
5346 char file_path[PATH_MAX];
5347 int saved_errno = errno;
5349 unsigned int rnumber;
5355 rc = snprintf(file_path, sizeof(file_path),
5356 "%s/" LUSTRE_VOLATILE_HDR "::%.4X",
5357 directory, rnumber);
5359 rc = snprintf(file_path, sizeof(file_path),
5360 "%s/" LUSTRE_VOLATILE_HDR ":%.4X:%.4X",
5361 directory, mdt_idx, rnumber);
5363 if (rc < 0 || rc >= sizeof(file_path))
5364 return -ENAMETOOLONG;
5367 * Either open O_WRONLY or O_RDWR, creating RDONLY
5368 * is non-sensical here
5370 if ((open_flags & O_ACCMODE) == O_RDONLY)
5371 open_flags = O_RDWR | (open_flags & ~O_ACCMODE);
5373 open_flags |= O_CREAT | O_EXCL | O_NOFOLLOW;
5375 if (stripe_param != NULL) {
5376 fd = llapi_file_open_param(file_path, open_flags,
5377 mode, stripe_param);
5381 fd = open(file_path, open_flags, mode);
5385 } while (fd < 0 && rc == -EEXIST);
5388 llapi_error(LLAPI_MSG_ERROR, rc,
5389 "Cannot create volatile file '%s' in '%s'",
5390 file_path + strlen(directory) + 1 +
5391 LUSTRE_VOLATILE_HDR_LEN,
5397 * Unlink file in case this wasn't a Lustre filesystem and the magic
5398 * volatile filename wasn't handled as intended. The effect is the
5399 * same. If volatile open was supported then we expect unlink() to
5402 (void)unlink(file_path);
5405 * Since we are returning successfully we restore errno (and
5406 * mask out possible EEXIST from open() and ENOENT from unlink().
5408 errno = saved_errno;
5414 * Create a file without any name open it for read/write
5416 * - file is created as if it were a standard file in the given \a directory
5417 * - file does not appear in \a directory and mtime does not change because
5418 * the filename is handled specially by the Lustre MDS.
5419 * - file is removed at final close
5420 * - file modes are rw------- since it doesn't make sense to have a read-only
5421 * or write-only file that cannot be opened again.
5422 * - if user wants another mode it must use fchmod() on the open file, no
5423 * security problems arise because it cannot be opened by another process.
5425 * \param[in] directory directory from which to inherit layout/MDT idx
5426 * \param[in] idx MDT index on which the file is created,
5427 * \a idx == -1 means no specific MDT is requested
5428 * \param[in] open_flags standard open(2) flags
5430 * \retval a file descriptor on success.
5431 * \retval -errno on error.
5433 int llapi_create_volatile_idx(const char *directory, int mdt_idx,
5436 return llapi_create_volatile_param(directory, mdt_idx, open_flags,
5437 S_IRUSR | S_IWUSR, NULL);
5441 * Swap the layouts between 2 file descriptors
5442 * the 2 files must be open for writing
5443 * first fd received the ioctl, second fd is passed as arg
5444 * this is assymetric but avoid use of root path for ioctl
5446 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5447 int gid, __u64 flags)
5449 struct lustre_swap_layouts lsl;
5454 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5455 rc = fstat(fd1, &st1);
5459 rc = fstat(fd2, &st2);
5464 lsl.sl_flags = flags;
5468 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5472 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5473 struct timeval tv1[2];
5474 struct timeval tv2[2];
5476 memset(tv1, 0, sizeof(tv1));
5477 memset(tv2, 0, sizeof(tv2));
5479 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5480 tv1[0].tv_sec = st1.st_atime;
5481 tv2[0].tv_sec = st2.st_atime;
5483 tv1[0].tv_sec = st2.st_atime;
5484 tv2[0].tv_sec = st1.st_atime;
5487 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5488 tv1[1].tv_sec = st1.st_mtime;
5489 tv2[1].tv_sec = st2.st_mtime;
5491 tv1[1].tv_sec = st2.st_mtime;
5492 tv2[1].tv_sec = st1.st_mtime;
5495 rc = futimes(fd1, tv1);
5499 rc = futimes(fd2, tv2);
5507 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5514 while (grp_id == 0);
5516 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5524 * Swap the layouts between 2 files
5525 * the 2 files are open in write
5527 int llapi_swap_layouts(const char *path1, const char *path2,
5528 __u64 dv1, __u64 dv2, __u64 flags)
5532 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5535 llapi_error(LLAPI_MSG_ERROR, rc,
5536 "error: cannot open '%s' for write", path1);
5540 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5543 llapi_error(LLAPI_MSG_ERROR, rc,
5544 "error: cannot open '%s' for write", path2);
5548 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5550 llapi_error(LLAPI_MSG_ERROR, rc,
5551 "error: cannot swap layout between '%s' and '%s'",
5562 * Attempt to open a file with Lustre file identifier \a fid
5563 * and return an open file descriptor.
5565 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5566 * \param[in] fid Lustre file identifier of file to open
5567 * \param[in] flags open() flags
5569 * \retval non-negative file descriptor on successful open
5570 * \retval -1 if an error occurred
5572 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5575 char mntdir[PATH_MAX];
5576 char path[PATH_MAX];
5579 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5583 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5584 return open(path, flags);
5590 * \param fd File to lock.
5591 * \param gid Group Identifier.
5593 * \retval 0 on success.
5594 * \retval -errno on failure.
5596 int llapi_group_lock(int fd, int gid)
5600 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5603 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5611 * \param fd File to unlock.
5612 * \param gid Group Identifier.
5614 * \retval 0 on success.
5615 * \retval -errno on failure.
5617 int llapi_group_unlock(int fd, int gid)
5621 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5624 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");