4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/utils/liblustreapi.c
34 * Author: Peter J. Braam <braam@clusterfs.com>
35 * Author: Phil Schwan <phil@clusterfs.com>
36 * Author: Robert Read <rread@clusterfs.com>
50 #include <sys/ioctl.h>
57 #include <sys/statfs.h>
58 #include <sys/syscall.h>
60 #include <sys/types.h>
61 #include <sys/xattr.h>
64 #include <libgen.h> /* for dirname() */
65 #ifdef HAVE_LINUX_UNISTD_H
66 #include <linux/unistd.h>
72 #include <libcfs/util/ioctl.h>
73 #include <libcfs/util/param.h>
74 #include <libcfs/util/string.h>
75 #include <linux/lnet/lnetctl.h>
76 #include <lustre/lustreapi.h>
77 #include <linux/lustre/lustre_ostid.h>
78 #include <linux/lustre/lustre_ioctl.h>
79 #include "lustreapi_internal.h"
81 static int llapi_msg_level = LLAPI_MSG_MAX;
82 const char *liblustreapi_cmd;
84 char *mdt_hash_name[] = { "none",
85 LMV_HASH_NAME_ALL_CHARS,
86 LMV_HASH_NAME_FNV_1A_64 };
88 void llapi_msg_set_level(int level)
90 /* ensure level is in the good range */
91 if (level < LLAPI_MSG_OFF)
92 llapi_msg_level = LLAPI_MSG_OFF;
93 else if (level > LLAPI_MSG_MAX)
94 llapi_msg_level = LLAPI_MSG_MAX;
96 llapi_msg_level = level;
99 int llapi_msg_get_level(void)
101 return llapi_msg_level;
104 void llapi_set_command_name(const char *cmd)
106 liblustreapi_cmd = cmd;
109 void llapi_clear_command_name(void)
111 liblustreapi_cmd = NULL;
114 static void error_callback_default(enum llapi_message_level level, int err,
115 const char *fmt, va_list ap)
117 if (liblustreapi_cmd != NULL)
118 fprintf(stderr, "%s %s: ", program_invocation_short_name,
121 fprintf(stderr, "%s: ", program_invocation_short_name);
122 vfprintf(stderr, fmt, ap);
123 if (level & LLAPI_MSG_NO_ERRNO)
124 fprintf(stderr, "\n");
126 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
129 static void info_callback_default(enum llapi_message_level level, int err,
130 const char *fmt, va_list ap)
133 if (liblustreapi_cmd != NULL) {
134 fprintf(stdout, "%s %s: ",
135 program_invocation_short_name,
138 fprintf(stdout, "%s: ", program_invocation_short_name);
141 vfprintf(stdout, fmt, ap);
144 static llapi_log_callback_t llapi_error_callback = error_callback_default;
145 static llapi_log_callback_t llapi_info_callback = info_callback_default;
148 /* llapi_error will preserve errno */
149 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
152 int tmp_errno = errno;
154 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
158 llapi_error_callback(level, abs(err), fmt, args);
163 /* llapi_printf will preserve errno */
164 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
167 int tmp_errno = errno;
169 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
173 llapi_info_callback(level, 0, fmt, args);
179 * Set a custom error logging function. Passing in NULL will reset the logging
180 * callback to its default value.
182 * This function returns the value of the old callback.
184 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
186 llapi_log_callback_t old = llapi_error_callback;
189 llapi_error_callback = cb;
191 llapi_error_callback = error_callback_default;
197 * Set a custom info logging function. Passing in NULL will reset the logging
198 * callback to its default value.
200 * This function returns the value of the old callback.
202 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
204 llapi_log_callback_t old = llapi_info_callback;
207 llapi_info_callback = cb;
209 llapi_info_callback = info_callback_default;
215 * size_units is to be initialized (or zeroed) by caller.
217 int llapi_parse_size(const char *optarg, unsigned long long *size,
218 unsigned long long *size_units, int bytes_spec)
221 char *argbuf = (char *)optarg;
222 unsigned long long frac = 0, frac_d = 1;
224 if (strncmp(optarg, "-", 1) == 0)
227 if (*size_units == 0)
230 *size = strtoull(argbuf, &end, 0);
231 if (end != NULL && *end == '.') {
235 frac = strtoull(argbuf, &end, 10);
236 /* count decimal places */
237 for (i = 0; i < (end - argbuf); i++)
242 if ((*end == 'b') && *(end + 1) == '\0' &&
243 (*size & (~0ULL << (64 - 9))) == 0 &&
245 *size_units = 1 << 9;
246 } else if ((*end == 'b') &&
247 *(end + 1) == '\0' &&
250 } else if ((*end == 'k' || *end == 'K') &&
251 *(end + 1) == '\0' &&
252 (*size & (~0ULL << (64 - 10))) == 0) {
253 *size_units = 1 << 10;
254 } else if ((*end == 'm' || *end == 'M') &&
255 *(end + 1) == '\0' &&
256 (*size & (~0ULL << (64 - 20))) == 0) {
257 *size_units = 1 << 20;
258 } else if ((*end == 'g' || *end == 'G') &&
259 *(end + 1) == '\0' &&
260 (*size & (~0ULL << (64 - 30))) == 0) {
261 *size_units = 1 << 30;
262 } else if ((*end == 't' || *end == 'T') &&
263 *(end + 1) == '\0' &&
264 (*size & (~0ULL << (64 - 40))) == 0) {
265 *size_units = 1ULL << 40;
266 } else if ((*end == 'p' || *end == 'P') &&
267 *(end + 1) == '\0' &&
268 (*size & (~0ULL << (64 - 50))) == 0) {
269 *size_units = 1ULL << 50;
270 } else if ((*end == 'e' || *end == 'E') &&
271 *(end + 1) == '\0' &&
272 (*size & (~0ULL << (64 - 60))) == 0) {
273 *size_units = 1ULL << 60;
278 *size = *size * *size_units + frac * *size_units / frac_d;
283 int llapi_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
285 struct obd_ioctl_data *overlay;
288 data->ioc_len = obd_ioctl_packlen(data);
289 data->ioc_version = OBD_IOCTL_VERSION;
291 if (*pbuf != NULL && data->ioc_len > max_len) {
292 fprintf(stderr, "pbuf = %p, ioc_len = %u, max_len = %d\n",
293 *pbuf, data->ioc_len, max_len);
298 *pbuf = malloc(data->ioc_len);
303 overlay = (struct obd_ioctl_data *)*pbuf;
304 memcpy(*pbuf, data, sizeof(*data));
306 ptr = overlay->ioc_bulk;
307 if (data->ioc_inlbuf1) {
308 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
309 ptr += __ALIGN_KERNEL(data->ioc_inllen1, 8);
312 if (data->ioc_inlbuf2) {
313 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
314 ptr += __ALIGN_KERNEL(data->ioc_inllen2, 8);
317 if (data->ioc_inlbuf3) {
318 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
319 ptr += __ALIGN_KERNEL(data->ioc_inllen3, 8);
322 if (data->ioc_inlbuf4) {
323 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
324 ptr += __ALIGN_KERNEL(data->ioc_inllen4, 8);
330 int llapi_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
332 struct obd_ioctl_data *overlay;
338 overlay = (struct obd_ioctl_data *)pbuf;
340 /* Preserve the caller's buffer pointers */
341 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
342 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
343 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
344 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
346 memcpy(data, pbuf, sizeof(*data));
348 ptr = overlay->ioc_bulk;
349 if (data->ioc_inlbuf1) {
350 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
351 ptr += __ALIGN_KERNEL(data->ioc_inllen1, 8);
354 if (data->ioc_inlbuf2) {
355 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
356 ptr += __ALIGN_KERNEL(data->ioc_inllen2, 8);
359 if (data->ioc_inlbuf3) {
360 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
361 ptr += __ALIGN_KERNEL(data->ioc_inllen3, 8);
364 if (data->ioc_inlbuf4) {
365 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
366 ptr += __ALIGN_KERNEL(data->ioc_inllen4, 8);
372 /* XXX: llapi_xxx() functions return negative values upon failure */
374 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
375 int stripe_count, int stripe_pattern)
379 /* 64 KB is the largest common page size I'm aware of (on ia64), but
380 * check the local page size just in case. */
381 page_size = LOV_MIN_STRIPE_SIZE;
382 if (getpagesize() > page_size) {
383 page_size = getpagesize();
384 llapi_err_noerrno(LLAPI_MSG_WARN,
385 "warning: your page size (%u) is "
386 "larger than expected (%u)", page_size,
387 LOV_MIN_STRIPE_SIZE);
389 if (!llapi_stripe_size_is_aligned(stripe_size)) {
391 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
392 "must be an even multiple of %d bytes",
393 stripe_size, page_size);
396 if (!llapi_stripe_index_is_valid(stripe_offset)) {
398 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
402 if (!llapi_stripe_count_is_valid(stripe_count)) {
404 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
408 if (llapi_stripe_size_is_too_big(stripe_size)) {
410 llapi_error(LLAPI_MSG_ERROR, rc,
411 "warning: stripe size 4G or larger "
412 "is not currently supported and would wrap");
418 int llapi_dir_stripe_limit_check(int stripe_offset, int stripe_count,
423 if (!llapi_dir_stripe_index_is_valid(stripe_offset)) {
425 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
429 if (!llapi_dir_stripe_count_is_valid(stripe_count)) {
431 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
436 if (!llapi_dir_hash_type_is_valid(hash_type)) {
438 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad hash type %d",
446 * Trim a trailing newline from a string, if it exists.
448 int llapi_chomp_string(char *buf)
464 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
466 static int get_param_lov(const char *path, const char *param,
467 char *buf, size_t buf_size)
469 struct obd_uuid uuid;
472 rc = llapi_file_get_lov_uuid(path, &uuid);
476 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
481 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
483 static int get_param_lmv(const char *path, const char *param,
484 char *buf, size_t buf_size)
486 struct obd_uuid uuid;
489 rc = llapi_file_get_lmv_uuid(path, &uuid);
493 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
497 static int get_mds_md_size(const char *path)
499 char buf[PATH_MAX], inst[PATH_MAX];
500 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
503 rc = llapi_getname(path, inst, sizeof(inst));
507 /* Get the max ea size from llite parameters. */
508 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
509 "max_easize", buf, sizeof(buf));
515 return rc > 0 ? rc : md_size;
518 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
520 return get_param_lmv(path, "uuid", buf, bufsize);
524 * if pool is NULL, search tgtname in target_obd
525 * if pool is not NULL:
526 * if pool not found returns errno < 0
527 * if tgtname is NULL, returns 1 if pool is not empty and 0 if pool empty
528 * if tgtname is not NULL, returns 1 if OST is in pool and 0 if not
530 int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt)
532 char buffer[PATH_MAX];
538 /* You need one or the other */
539 if (poolname == NULL && fsname == NULL)
543 len = strlen(tgtname);
545 if (poolname == NULL && len == 0)
548 /* Search by poolname and fsname if is not NULL */
549 if (poolname != NULL) {
550 rc = poolpath(¶m, fsname, NULL);
552 snprintf(buffer, sizeof(buffer), "%s/%s",
553 param.gl_pathv[0], poolname);
555 } else if (fsname != NULL) {
556 rc = get_lustre_param_path(is_mdt ? "lmv" : "lov", fsname,
558 "target_obd", ¶m);
560 strncpy(buffer, param.gl_pathv[0],
566 cfs_free_param_data(¶m);
570 fd = fopen(buffer, "r");
574 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
575 if (poolname == NULL) {
577 /* Search for an tgtname in the list of targets
578 * Line format is IDX: fsname-OST/MDTxxxx_UUID STATUS */
579 ptr = strchr(buffer, ' ');
581 (strncmp(ptr + 1, tgtname, len) == 0)) {
586 /* Search for an tgtname in a pool,
587 * (or an existing non-empty pool if no tgtname) */
588 if ((tgtname == NULL) ||
589 (strncmp(buffer, tgtname, len) == 0)) {
599 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
601 return llapi_search_tgt(fsname, poolname, ostname, false);
605 * Open a Lustre file.
607 * \param name the name of the file to be opened
608 * \param flags access mode, see flags in open(2)
609 * \param mode permission of the file if it is created, see mode in open(2)
610 * \param param stripe pattern of the newly created file
612 * \retval file descriptor of opened file
613 * \retval negative errno on failure
615 int llapi_file_open_param(const char *name, int flags, mode_t mode,
616 const struct llapi_stripe_param *param)
618 char fsname[MAX_OBD_NAME + 1] = { 0 };
619 char *pool_name = param->lsp_pool;
620 struct lov_user_md *lum = NULL;
621 size_t lum_size = sizeof(*lum);
624 /* Make sure we are on a Lustre file system */
625 rc = llapi_search_fsname(name, fsname);
627 llapi_error(LLAPI_MSG_ERROR, rc,
628 "'%s' is not on a Lustre filesystem",
633 /* Check if the stripe pattern is sane. */
634 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
635 param->lsp_stripe_offset,
636 param->lsp_stripe_count,
637 param->lsp_stripe_pattern);
641 /* Make sure we have a good pool */
642 if (pool_name != NULL) {
643 /* in case user gives the full pool name <fsname>.<poolname>,
644 * strip the fsname */
645 char *ptr = strchr(pool_name, '.');
648 if (strcmp(pool_name, fsname) != 0) {
650 llapi_err_noerrno(LLAPI_MSG_ERROR,
651 "Pool '%s' is not on filesystem '%s'",
658 /* Make sure the pool exists and is non-empty */
659 rc = llapi_search_ost(fsname, pool_name, NULL);
661 char *err = rc == 0 ? "has no OSTs" : "does not exist";
663 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
664 fsname, pool_name, err);
668 lum_size = sizeof(struct lov_user_md_v3);
671 /* sanity check of target list */
672 if (param->lsp_is_specific) {
673 char ostname[MAX_OBD_NAME + 1];
677 for (i = 0; i < param->lsp_stripe_count; i++) {
678 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
679 fsname, param->lsp_osts[i]);
680 rc = llapi_search_ost(fsname, pool_name, ostname);
685 llapi_error(LLAPI_MSG_ERROR, rc,
686 "%s: cannot find OST %s in %s",
693 /* Make sure stripe offset is in OST list. */
694 if (param->lsp_osts[i] == param->lsp_stripe_offset)
698 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
699 "%s: stripe offset '%d' is not in the "
701 __func__, param->lsp_stripe_offset);
705 lum_size = lov_user_md_size(param->lsp_stripe_count,
706 LOV_USER_MAGIC_SPECIFIC);
709 lum = calloc(1, lum_size);
714 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
716 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
717 flags = O_DIRECTORY | O_RDONLY;
724 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
729 /* Initialize IOCTL striping pattern structure */
730 lum->lmm_magic = LOV_USER_MAGIC_V1;
731 lum->lmm_pattern = param->lsp_stripe_pattern;
732 lum->lmm_stripe_size = param->lsp_stripe_size;
733 lum->lmm_stripe_count = param->lsp_stripe_count;
734 lum->lmm_stripe_offset = param->lsp_stripe_offset;
735 if (pool_name != NULL) {
736 struct lov_user_md_v3 *lumv3 = (void *)lum;
738 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
739 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
741 if (param->lsp_is_specific) {
742 struct lov_user_md_v3 *lumv3 = (void *)lum;
745 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
746 if (pool_name == NULL) {
747 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
748 * OST list, therefore if pool is not specified we have
749 * to pack a null pool name for placeholder. */
750 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
753 for (i = 0; i < param->lsp_stripe_count; i++)
754 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
757 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
758 char *errmsg = "stripe already set";
761 if (errno != EEXIST && errno != EALREADY)
762 errmsg = strerror(errno);
764 llapi_err_noerrno(LLAPI_MSG_ERROR,
765 "error on ioctl %#jx for '%s' (%d): %s",
766 (uintmax_t)LL_IOC_LOV_SETSTRIPE, name, fd,
778 int llapi_file_open_pool(const char *name, int flags, int mode,
779 unsigned long long stripe_size, int stripe_offset,
780 int stripe_count, int stripe_pattern, char *pool_name)
782 const struct llapi_stripe_param param = {
783 .lsp_stripe_size = stripe_size,
784 .lsp_stripe_count = stripe_count,
785 .lsp_stripe_pattern = stripe_pattern,
786 .lsp_stripe_offset = stripe_offset,
787 .lsp_pool = pool_name
789 return llapi_file_open_param(name, flags, mode, ¶m);
792 int llapi_file_open(const char *name, int flags, int mode,
793 unsigned long long stripe_size, int stripe_offset,
794 int stripe_count, int stripe_pattern)
796 return llapi_file_open_pool(name, flags, mode, stripe_size,
797 stripe_offset, stripe_count,
798 stripe_pattern, NULL);
801 int llapi_file_create(const char *name, unsigned long long stripe_size,
802 int stripe_offset, int stripe_count, int stripe_pattern)
806 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
807 stripe_offset, stripe_count, stripe_pattern,
816 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
817 int stripe_offset, int stripe_count,
818 int stripe_pattern, char *pool_name)
822 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
823 stripe_offset, stripe_count, stripe_pattern,
832 static int verify_dir_param(const char *name,
833 const struct llapi_stripe_param *param)
835 char fsname[MAX_OBD_NAME + 1] = { 0 };
836 char *pool_name = param->lsp_pool;
839 /* Make sure we are on a Lustre file system */
840 rc = llapi_search_fsname(name, fsname);
842 llapi_error(LLAPI_MSG_ERROR, rc,
843 "'%s' is not on a Lustre filesystem",
848 /* Check if the stripe pattern is sane. */
849 rc = llapi_dir_stripe_limit_check(param->lsp_stripe_offset,
850 param->lsp_stripe_count,
851 param->lsp_stripe_pattern);
855 /* Make sure we have a good pool */
856 if (pool_name != NULL) {
857 /* in case user gives the full pool name <fsname>.<poolname>,
858 * strip the fsname */
859 char *ptr = strchr(pool_name, '.');
863 if (strcmp(pool_name, fsname) != 0) {
865 llapi_err_noerrno(LLAPI_MSG_ERROR,
866 "Pool '%s' is not on filesystem '%s'",
873 /* Make sure the pool exists and is non-empty */
874 rc = llapi_search_tgt(fsname, pool_name, NULL, true);
876 char *err = rc == 0 ? "has no OSTs" : "does not exist";
878 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
879 fsname, pool_name, err);
884 /* sanity check of target list */
885 if (param->lsp_is_specific) {
886 char mdtname[MAX_OBD_NAME + 1];
890 for (i = 0; i < param->lsp_stripe_count; i++) {
891 snprintf(mdtname, sizeof(mdtname), "%s-MDT%04x_UUID",
892 fsname, param->lsp_tgts[i]);
893 rc = llapi_search_tgt(fsname, pool_name, mdtname, true);
898 llapi_error(LLAPI_MSG_ERROR, rc,
899 "%s: cannot find MDT %s in %s",
906 /* Make sure stripe offset is in MDT list. */
907 if (param->lsp_tgts[i] == param->lsp_stripe_offset)
911 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
912 "%s: stripe offset '%d' is not in the "
914 __func__, param->lsp_stripe_offset);
922 static inline void param2lmu(struct lmv_user_md *lmu,
923 const struct llapi_stripe_param *param)
925 lmu->lum_magic = param->lsp_is_specific ? LMV_USER_MAGIC_SPECIFIC :
927 lmu->lum_stripe_count = param->lsp_stripe_count;
928 lmu->lum_stripe_offset = param->lsp_stripe_offset;
929 lmu->lum_hash_type = param->lsp_stripe_pattern;
930 if (param->lsp_pool != NULL)
931 strncpy(lmu->lum_pool_name, param->lsp_pool, LOV_MAXPOOLNAME);
932 if (param->lsp_is_specific) {
935 for (i = 0; i < param->lsp_stripe_count; i++)
936 lmu->lum_objects[i].lum_mds = param->lsp_tgts[i];
940 int llapi_dir_set_default_lmv(const char *name,
941 const struct llapi_stripe_param *param)
943 struct lmv_user_md lmu = { 0 };
947 rc = verify_dir_param(name, param);
951 /* TODO: default lmv doesn't support specific targets yet */
952 if (param->lsp_is_specific)
955 param2lmu(&lmu, param);
957 fd = open(name, O_DIRECTORY | O_RDONLY);
960 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
964 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lmu);
966 char *errmsg = "stripe already set";
968 if (errno != EEXIST && errno != EALREADY)
969 errmsg = strerror(errno);
971 llapi_err_noerrno(LLAPI_MSG_ERROR,
972 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
979 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
980 int stripe_count, int stripe_pattern,
981 const char *pool_name)
983 const struct llapi_stripe_param param = {
984 .lsp_stripe_count = stripe_count,
985 .lsp_stripe_offset = stripe_offset,
986 .lsp_stripe_pattern = stripe_pattern,
987 .lsp_pool = (char *)pool_name
990 return llapi_dir_set_default_lmv(name, ¶m);
994 * Create a Lustre directory.
996 * \param name the name of the directory to be created
997 * \param mode permission of the file if it is created, see mode in open(2)
998 * \param param stripe pattern of the newly created directory
1000 * \retval 0 on success
1001 * \retval negative errno on failure
1003 int llapi_dir_create(const char *name, mode_t mode,
1004 const struct llapi_stripe_param *param)
1006 struct lmv_user_md *lmu = NULL;
1007 size_t lmu_size = sizeof(*lmu);
1008 struct obd_ioctl_data data = { 0 };
1011 char *dirpath = NULL;
1012 char *namepath = NULL;
1017 rc = verify_dir_param(name, param);
1021 if (param->lsp_is_specific)
1022 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1023 LMV_USER_MAGIC_SPECIFIC);
1025 lmu = calloc(1, lmu_size);
1029 dirpath = strdup(name);
1035 namepath = strdup(name);
1042 param2lmu(lmu, param);
1044 filename = basename(namepath);
1045 dir = dirname(dirpath);
1047 data.ioc_inlbuf1 = (char *)filename;
1048 data.ioc_inllen1 = strlen(filename) + 1;
1049 data.ioc_inlbuf2 = (char *)lmu;
1050 data.ioc_inllen2 = lmu_size;
1051 data.ioc_type = mode;
1052 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
1054 llapi_error(LLAPI_MSG_ERROR, rc,
1055 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1060 fd = open(dir, O_DIRECTORY | O_RDONLY);
1063 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1067 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1068 char *errmsg = "stripe already set";
1070 if (errno != EEXIST && errno != EALREADY)
1071 errmsg = strerror(errno);
1073 llapi_err_noerrno(LLAPI_MSG_ERROR,
1074 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
1086 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1087 int stripe_count, int stripe_pattern,
1088 const char *pool_name)
1090 const struct llapi_stripe_param param = {
1091 .lsp_stripe_count = stripe_count,
1092 .lsp_stripe_offset = stripe_offset,
1093 .lsp_stripe_pattern = stripe_pattern,
1094 .lsp_pool = (char *)pool_name
1097 return llapi_dir_create(name, mode, ¶m);
1100 int llapi_direntry_remove(char *dname)
1102 char *dirpath = NULL;
1103 char *namepath = NULL;
1109 dirpath = strdup(dname);
1110 namepath = strdup(dname);
1111 if (!dirpath || !namepath)
1114 filename = basename(namepath);
1116 dir = dirname(dirpath);
1118 fd = open(dir, O_DIRECTORY | O_RDONLY);
1121 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1126 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1127 char *errmsg = strerror(errno);
1128 llapi_err_noerrno(LLAPI_MSG_ERROR,
1129 "error on ioctl %#jx for '%s' (%d): %s",
1130 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1142 * Find the fsname, the full path, and/or an open fd.
1143 * Either the fsname or path must not be NULL
1145 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1148 char buf[PATH_MAX], mntdir[PATH_MAX];
1149 char *ptr, *ptr_end;
1151 int idx = 0, len = 0, mntlen, fd;
1154 /* get the mount point */
1155 fp = setmntent(PROC_MOUNTS, "r");
1158 llapi_error(LLAPI_MSG_ERROR, rc,
1159 "cannot retrieve filesystem mount point");
1163 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1166 if (!llapi_is_lustre_mnt(&mnt))
1169 if ((want & WANT_INDEX) && (idx++ != index))
1172 mntlen = strlen(mnt.mnt_dir);
1173 ptr = strchr(mnt.mnt_fsname, '/');
1174 while (ptr && *ptr == '/')
1176 /* thanks to the call to llapi_is_lustre_mnt() above,
1177 * we are sure that mnt.mnt_fsname contains ":/",
1178 * so ptr should never be NULL */
1182 while (*ptr_end != '/' && *ptr_end != '\0')
1185 /* Check the fsname for a match, if given */
1186 if (!(want & WANT_FSNAME) && fsname != NULL &&
1187 (strlen(fsname) > 0) &&
1188 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1191 /* If the path isn't set return the first one we find */
1192 if (path == NULL || strlen(path) == 0) {
1193 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1194 mntdir[strlen(mnt.mnt_dir)] = '\0';
1195 if ((want & WANT_FSNAME) && fsname != NULL) {
1196 strncpy(fsname, ptr, ptr_end - ptr);
1197 fsname[ptr_end - ptr] = '\0';
1201 /* Otherwise find the longest matching path */
1202 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1203 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1204 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1205 mntdir[strlen(mnt.mnt_dir)] = '\0';
1207 if ((want & WANT_FSNAME) && fsname != NULL) {
1208 strncpy(fsname, ptr, ptr_end - ptr);
1209 fsname[ptr_end - ptr] = '\0';
1218 if ((want & WANT_PATH) && path != NULL) {
1219 strncpy(path, mntdir, strlen(mntdir));
1220 path[strlen(mntdir)] = '\0';
1222 if (want & WANT_FD) {
1223 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1226 llapi_error(LLAPI_MSG_ERROR, rc,
1227 "cannot open '%s': %s", mntdir,
1234 } else if (want & WANT_ERROR)
1235 llapi_err_noerrno(LLAPI_MSG_ERROR,
1236 "'%s' not on a mounted Lustre filesystem",
1237 (want & WANT_PATH) ? fsname : path);
1242 * search lustre mounts
1244 * Calling this function will return to the user the mount point, mntdir, and
1245 * the file system name, fsname, if the user passed a buffer to this routine.
1247 * The user inputs are pathname and index. If the pathname is supplied then
1248 * the value of the index will be ignored. The pathname will return data if
1249 * the pathname is located on a lustre mount. Index is used to pick which
1250 * mount point you want in the case of multiple mounted lustre file systems.
1251 * See function lfs_osts in lfs.c for an example of the index use.
1253 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1256 int want = WANT_PATH, idx = -1;
1258 if (!pathname || pathname[0] == '\0') {
1262 strcpy(mntdir, pathname);
1265 want |= WANT_FSNAME;
1266 return get_root_path(want, fsname, NULL, mntdir, idx);
1269 /* Given a path, find the corresponding Lustre fsname */
1270 int llapi_search_fsname(const char *pathname, char *fsname)
1275 path = realpath(pathname, NULL);
1277 char tmp[PATH_MAX - 1];
1283 if (pathname[0] != '/') {
1284 /* Need an absolute path, but realpath() only works for
1285 * pathnames that actually exist. We go through the
1286 * extra hurdle of dirname(getcwd() + pathname) in
1287 * case the relative pathname contains ".." in it. */
1288 char realpath[PATH_MAX - 1];
1290 if (getcwd(realpath, sizeof(realpath) - 2) == NULL) {
1292 llapi_error(LLAPI_MSG_ERROR, rc,
1293 "cannot get current working directory");
1297 rc = snprintf(tmp, sizeof(tmp), "%s/", realpath);
1298 if (rc >= sizeof(tmp)) {
1300 llapi_error(LLAPI_MSG_ERROR, rc,
1301 "invalid parent path '%s'",
1307 rc = snprintf(buf, sizeof(buf), "%s%s", tmp, pathname);
1308 if (rc >= sizeof(buf)) {
1310 llapi_error(LLAPI_MSG_ERROR, rc,
1311 "invalid path '%s'", pathname);
1314 path = realpath(buf, NULL);
1316 ptr = strrchr(buf, '/');
1318 llapi_error(LLAPI_MSG_ERROR |
1319 LLAPI_MSG_NO_ERRNO, 0,
1320 "cannot resolve path '%s'",
1325 path = realpath(buf, NULL);
1328 llapi_error(LLAPI_MSG_ERROR, rc,
1329 "cannot resolve path '%s'",
1335 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1340 int llapi_search_rootpath(char *pathname, const char *fsname)
1342 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1345 int llapi_getname(const char *path, char *buf, size_t size)
1347 struct obd_uuid uuid_buf;
1348 char *uuid = uuid_buf.uuid;
1351 memset(&uuid_buf, 0, sizeof(uuid_buf));
1352 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1356 /* We want to turn lustre-clilov-ffff88002738bc00 into
1357 * lustre-ffff88002738bc00. */
1359 nr = snprintf(buf, size, "%.*s-%s",
1360 (int) (strlen(uuid) - 24), uuid,
1361 uuid + strlen(uuid) - 16);
1370 * Get the list of pool members.
1371 * \param poolname string of format \<fsname\>.\<poolname\>
1372 * \param members caller-allocated array of char*
1373 * \param list_size size of the members array
1374 * \param buffer caller-allocated buffer for storing OST names
1375 * \param buffer_size size of the buffer
1377 * \return number of members retrieved for this pool
1378 * \retval -error failure
1380 int llapi_get_poolmembers(const char *poolname, char **members,
1381 int list_size, char *buffer, int buffer_size)
1383 char fsname[PATH_MAX];
1392 /* name is FSNAME.POOLNAME */
1393 if (strlen(poolname) >= sizeof(fsname))
1396 snprintf(fsname, sizeof(fsname), "%s", poolname);
1397 pool = strchr(fsname, '.');
1404 rc = poolpath(&pathname, fsname, NULL);
1406 llapi_error(LLAPI_MSG_ERROR, rc,
1407 "Lustre filesystem '%s' not found",
1412 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1413 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1414 cfs_free_param_data(&pathname);
1415 if (rc >= sizeof(buf))
1417 fd = fopen(buf, "r");
1420 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1425 while (fgets(buf, sizeof(buf), fd) != NULL) {
1426 if (nb_entries >= list_size) {
1430 buf[sizeof(buf) - 1] = '\0';
1432 tmp = strchr(buf, '\n');
1435 if (used + strlen(buf) + 1 > buffer_size) {
1440 strcpy(buffer + used, buf);
1441 members[nb_entries] = buffer + used;
1442 used += strlen(buf) + 1;
1452 * Get the list of pools in a filesystem.
1453 * \param name filesystem name or path
1454 * \param poollist caller-allocated array of char*
1455 * \param list_size size of the poollist array
1456 * \param buffer caller-allocated buffer for storing pool names
1457 * \param buffer_size size of the buffer
1459 * \return number of pools retrieved for this filesystem
1460 * \retval -error failure
1462 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1463 char *buffer, int buffer_size)
1465 char rname[PATH_MAX];
1470 struct dirent *pool;
1472 unsigned int nb_entries = 0;
1473 unsigned int used = 0;
1476 /* initialize output array */
1477 for (i = 0; i < list_size; i++)
1480 /* is name a pathname ? */
1481 ptr = strchr(name, '/');
1483 /* only absolute pathname is supported */
1487 if (!realpath(name, rname)) {
1489 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1494 fsname = strdup(rname);
1498 rc = poolpath(&pathname, NULL, rname);
1500 /* name is FSNAME */
1501 fsname = strdup(name);
1504 rc = poolpath(&pathname, fsname, NULL);
1507 llapi_error(LLAPI_MSG_ERROR, rc,
1508 "Lustre filesystem '%s' not found", name);
1512 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1513 dir = opendir(pathname.gl_pathv[0]);
1516 llapi_error(LLAPI_MSG_ERROR, rc,
1517 "Could not open pool list for '%s'",
1524 pool = readdir(dir);
1530 /* ignore . and .. */
1531 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1534 /* check output bounds */
1535 if (nb_entries >= list_size) {
1540 /* +2 for '.' and final '\0' */
1541 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1547 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1548 poollist[nb_entries] = buffer + used;
1549 used += strlen(pool->d_name) + strlen(fsname) + 2;
1555 llapi_error(LLAPI_MSG_ERROR, rc,
1556 "Error reading pool list for '%s'", name);
1559 cfs_free_param_data(&pathname);
1562 return rc != 0 ? rc : nb_entries;
1565 /* wrapper for lfs.c and obd.c */
1566 int llapi_poollist(const char *name)
1568 /* list of pool names (assume that pool count is smaller
1570 char **list, *buffer = NULL, *fsname = (char *)name;
1571 char *poolname = NULL, *tmp = NULL, data[16];
1572 enum param_filter type = FILTER_BY_PATH;
1573 int obdcount, bufsize, rc, nb, i;
1578 if (name[0] != '/') {
1579 fsname = strdup(name);
1583 poolname = strchr(fsname, '.');
1586 type = FILTER_BY_FS_NAME;
1589 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1590 data, sizeof(data));
1593 obdcount = atoi(data);
1595 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1596 * and also an array to store the pointers for all that
1597 * allocated space. */
1599 bufsize = sizeof(struct obd_uuid) * obdcount;
1600 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1601 if (buffer == NULL) {
1605 list = (char **) (buffer + bufsize);
1608 /* name is a path or fsname */
1609 nb = llapi_get_poollist(name, list, obdcount,
1612 /* name is a pool name (<fsname>.<poolname>) */
1613 nb = llapi_get_poolmembers(name, list, obdcount,
1617 if (nb == -EOVERFLOW) {
1620 goto retry_get_pools;
1623 for (i = 0; i < nb; i++)
1624 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1625 rc = (nb < 0 ? nb : 0);
1629 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1634 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1635 void *data, struct dirent64 *de);
1637 #define OBD_NOT_FOUND (-1)
1639 static int common_param_init(struct find_param *param, char *path)
1641 int lum_size = get_mds_md_size(path);
1643 if (lum_size < PATH_MAX + 1)
1644 lum_size = PATH_MAX + 1;
1646 param->fp_lum_size = lum_size;
1647 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1648 if (param->fp_lmd == NULL) {
1649 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1650 "error: allocation of %zu bytes for ioctl",
1651 sizeof(lstat_t) + param->fp_lum_size);
1655 param->fp_lmv_stripe_count = 256;
1656 param->fp_lmv_md = calloc(1,
1657 lmv_user_md_size(param->fp_lmv_stripe_count,
1659 if (param->fp_lmv_md == NULL) {
1660 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1661 "error: allocation of %d bytes for ioctl",
1662 lmv_user_md_size(param->fp_lmv_stripe_count,
1667 param->fp_got_uuids = 0;
1668 param->fp_obd_indexes = NULL;
1669 param->fp_obd_index = OBD_NOT_FOUND;
1670 if (!param->fp_migrate)
1671 param->fp_mdt_index = OBD_NOT_FOUND;
1675 static void find_param_fini(struct find_param *param)
1677 if (param->fp_obd_indexes)
1678 free(param->fp_obd_indexes);
1681 free(param->fp_lmd);
1683 if (param->fp_lmv_md)
1684 free(param->fp_lmv_md);
1687 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1688 struct dirent64 *de)
1690 struct find_param *param = data;
1696 /* set errno upon failure */
1697 static DIR *opendir_parent(const char *path)
1703 path_copy = strdup(path);
1704 if (path_copy == NULL)
1707 parent_path = dirname(path_copy);
1708 parent = opendir(parent_path);
1714 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1719 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1720 if (param->fp_get_default_lmv)
1721 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1723 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1725 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1726 if (errno == E2BIG && ret != 0) {
1730 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1731 if (stripe_count <= param->fp_lmv_stripe_count)
1734 free(param->fp_lmv_md);
1735 param->fp_lmv_stripe_count = stripe_count;
1736 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1737 param->fp_lmv_md = malloc(lmv_size);
1738 if (param->fp_lmv_md == NULL) {
1739 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1740 "error: allocation of %d bytes for ioctl",
1741 lmv_user_md_size(param->fp_lmv_stripe_count,
1750 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1751 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1753 struct lov_user_mds_data *lmd = lmdbuf;
1754 lstat_t *st = &lmd->lmd_st;
1757 if (parent_fd < 0 && dir_fd < 0)
1759 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1763 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1764 * and returns struct lov_user_mds_data, while
1765 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1767 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1768 LL_IOC_LOV_GETSTRIPE,
1770 } else if (parent_fd >= 0) {
1771 char *fname = strrchr(path, '/');
1773 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1774 * the parent directory) and returns struct lov_user_mds_data,
1775 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1777 * This avoids opening, locking, and closing each file on the
1778 * client if that is not needed. Multiple of these ioctl() can
1779 * be done on the parent dir with a single open for all
1780 * files in that directory, and it also doesn't pollute the
1781 * client dcache with millions of dentries when traversing
1782 * a large filesystem.
1784 fname = (fname == NULL ? path : fname + 1);
1786 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1789 else if (ret >= lmdlen || ret++ == 0)
1792 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1793 IOC_MDC_GETFILEINFO :
1794 IOC_MDC_GETFILESTRIPE, lmdbuf);
1797 if (ret && type == GET_LMD_INFO) {
1798 if (errno == ENOTTY) {
1799 /* ioctl is not supported, it is not a lustre fs.
1800 * Do the regular lstat(2) instead.
1802 ret = lstat_f(path, st);
1805 llapi_error(LLAPI_MSG_ERROR, ret,
1806 "error: %s: lstat failed for %s",
1809 } else if (errno == ENOENT) {
1811 llapi_error(LLAPI_MSG_WARN, ret,
1812 "warning: %s does not exist", path);
1813 } else if (errno != EISDIR && errno != ENODATA) {
1815 llapi_error(LLAPI_MSG_ERROR, ret,
1816 "%s ioctl failed for %s.",
1817 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1818 "IOC_MDC_GETFILEINFO", path);
1825 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1826 int lmdlen, enum get_lmd_info_type type)
1832 parent_fd = dirfd(parent);
1834 dir_fd = dirfd(dir);
1836 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1839 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1840 semantic_func_t sem_init,
1841 semantic_func_t sem_fini, void *data,
1842 struct dirent64 *de)
1844 struct find_param *param = (struct find_param *)data;
1845 struct dirent64 *dent;
1853 if (!d && errno != ENOTDIR) {
1855 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1858 } else if (!d && !parent) {
1859 /* ENOTDIR. Open the parent dir. */
1860 p = opendir_parent(path);
1867 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1873 while ((dent = readdir64(d)) != NULL) {
1876 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1880 if ((len + dent->d_reclen + 2) > size) {
1881 llapi_err_noerrno(LLAPI_MSG_ERROR,
1882 "error: %s: string buffer too small",
1887 strcat(path, dent->d_name);
1889 if (dent->d_type == DT_UNKNOWN) {
1890 lstat_t *st = ¶m->fp_lmd->lmd_st;
1892 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1893 param->fp_lum_size, GET_LMD_INFO);
1895 dent->d_type = IFTODT(st->st_mode);
1902 switch (dent->d_type) {
1904 llapi_err_noerrno(LLAPI_MSG_ERROR,
1905 "error: %s: '%s' is UNKNOWN type %d",
1906 __func__, dent->d_name, dent->d_type);
1909 rc = llapi_semantic_traverse(path, size, d, sem_init,
1910 sem_fini, data, dent);
1911 if (rc != 0 && ret == 0)
1917 rc = sem_init(path, d, NULL, data, dent);
1918 if (rc < 0 && ret == 0)
1921 if (sem_fini && rc == 0)
1922 sem_fini(path, d, NULL, data, dent);
1930 sem_fini(path, parent, &d, data, de);
1939 static int param_callback(char *path, semantic_func_t sem_init,
1940 semantic_func_t sem_fini, struct find_param *param)
1942 int ret, len = strlen(path);
1945 if (len > PATH_MAX) {
1947 llapi_error(LLAPI_MSG_ERROR, ret,
1948 "Path name '%s' is too long", path);
1952 buf = (char *)malloc(PATH_MAX + 1);
1956 snprintf(buf, PATH_MAX + 1, "%s", path);
1957 ret = common_param_init(param, buf);
1961 param->fp_depth = 0;
1963 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1964 sem_fini, param, NULL);
1966 find_param_fini(param);
1968 return ret < 0 ? ret : 0;
1971 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1973 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1976 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1981 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1983 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1986 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1991 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1995 fd = open(path, O_RDONLY | O_NONBLOCK);
1998 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2002 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2008 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2012 fd = open(path, O_RDONLY | O_NONBLOCK);
2015 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2019 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2031 * If uuidp is NULL, return the number of available obd uuids.
2032 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2033 * there are more OSTs than allocated to uuidp, then an error is returned with
2034 * the ost_count set to number of available obd uuids.
2036 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2037 int *ost_count, enum tgt_type type)
2039 char buf[PATH_MAX], format[32];
2040 int rc = 0, index = 0;
2041 struct obd_uuid name;
2045 /* Get the lov name */
2046 if (type == LOV_TYPE)
2047 rc = llapi_file_fget_lov_uuid(fd, &name);
2049 rc = llapi_file_fget_lmv_uuid(fd, &name);
2053 /* Now get the ost uuids */
2054 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2055 FILTER_BY_EXACT, "target_obd", ¶m);
2059 fp = fopen(param.gl_pathv[0], "r");
2062 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2067 snprintf(format, sizeof(format),
2068 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2069 while (fgets(buf, sizeof(buf), fp) != NULL) {
2070 if (uuidp && (index < *ost_count)) {
2071 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2079 if (uuidp && (index > *ost_count))
2084 cfs_free_param_data(¶m);
2088 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2090 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2093 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2098 root = open(mnt, O_RDONLY | O_DIRECTORY);
2101 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2106 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2114 /* Check if user specified value matches a real uuid. Ignore _UUID,
2115 * -osc-4ba41334, other trailing gunk in comparison.
2116 * @param real_uuid ends in "_UUID"
2117 * @param search_uuid may or may not end in "_UUID"
2119 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2121 int cmplen = strlen(real_uuid);
2122 int searchlen = strlen(search_uuid);
2124 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2126 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2129 /* The UUIDs may legitimately be different lengths, if
2130 * the system was upgraded from an older version. */
2131 if (cmplen != searchlen)
2134 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2137 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2138 * returned in param->fp_obd_index */
2139 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2141 struct obd_uuid obd_uuid;
2148 if (param->fp_got_uuids)
2151 /* Get the lov/lmv name */
2152 if (param->fp_get_lmv)
2153 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2155 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2157 if (rc != -ENOTTY) {
2158 llapi_error(LLAPI_MSG_ERROR, rc,
2159 "error: can't get %s name: %s",
2160 param->fp_get_lmv ? "lmv" : "lov",
2168 param->fp_got_uuids = 1;
2170 /* Now get the ost uuids */
2171 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2172 obd_uuid.uuid, FILTER_BY_EXACT,
2173 "target_obd", ¶m_data);
2177 fp = fopen(param_data.gl_pathv[0], "r");
2180 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2181 param_data.gl_pathv[0]);
2185 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2186 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2187 param->fp_get_lmv ? "MDTS" : "OBDS");
2189 snprintf(format, sizeof(format),
2190 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2191 while (fgets(buf, sizeof(buf), fp) != NULL) {
2194 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2197 if (param->fp_obd_uuid) {
2198 if (llapi_uuid_match(obd_uuid.uuid,
2199 param->fp_obd_uuid->uuid)) {
2200 param->fp_obd_index = index;
2203 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2204 /* Print everything */
2205 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2208 param->fp_obds_printed = 1;
2212 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2213 llapi_err_noerrno(LLAPI_MSG_ERROR,
2214 "error: %s: unknown obduuid: %s",
2215 __func__, param->fp_obd_uuid->uuid);
2219 cfs_free_param_data(¶m_data);
2223 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2224 * obd index for all these obduuids will be returned in
2225 * param->fp_obd_indexes */
2226 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2227 int num_obds, int **obdindexes, int *obdindex,
2230 int ret, obdcount, obd_valid = 0, obdnum;
2232 struct obd_uuid *uuids = NULL;
2236 if (type == LOV_TYPE)
2237 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2239 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2243 obdcount = atoi(buf);
2244 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2249 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2251 if (ret == -EOVERFLOW) {
2252 struct obd_uuid *uuids_temp;
2254 uuids_temp = realloc(uuids, obdcount *
2255 sizeof(struct obd_uuid));
2256 if (uuids_temp != NULL) {
2258 goto retry_get_uuids;
2263 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2267 indexes = malloc(num_obds * sizeof(*obdindex));
2268 if (indexes == NULL) {
2273 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2276 /* The user may have specified a simple index */
2277 i = strtol(obduuids[obdnum].uuid, &end, 0);
2278 if (end && *end == '\0' && i < obdcount) {
2279 indexes[obdnum] = i;
2282 for (i = 0; i < obdcount; i++) {
2283 if (llapi_uuid_match(uuids[i].uuid,
2284 obduuids[obdnum].uuid)) {
2285 indexes[obdnum] = i;
2291 if (i >= obdcount) {
2292 indexes[obdnum] = OBD_NOT_FOUND;
2293 llapi_err_noerrno(LLAPI_MSG_ERROR,
2294 "error: %s: unknown obduuid: %s",
2295 __func__, obduuids[obdnum].uuid);
2301 *obdindex = OBD_NOT_FOUND;
2303 *obdindex = obd_valid;
2305 *obdindexes = indexes;
2313 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2317 if (param->fp_mdt_uuid) {
2318 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2320 ¶m->fp_mdt_indexes,
2321 ¶m->fp_mdt_index, LMV_TYPE);
2326 if (param->fp_obd_uuid) {
2327 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2329 ¶m->fp_obd_indexes,
2330 ¶m->fp_obd_index, LOV_TYPE);
2335 param->fp_got_uuids = 1;
2340 int llapi_ostlist(char *path, struct find_param *param)
2345 fd = open(path, O_RDONLY | O_DIRECTORY);
2349 ret = setup_obd_uuid(fd, path, param);
2356 * Tries to determine the default stripe attributes for a given filesystem. The
2357 * filesystem to check should be specified by fsname, or will be determined
2360 static int sattr_get_defaults(const char *const fsname,
2361 unsigned int *scount,
2362 unsigned int *ssize,
2363 unsigned int *soffset)
2369 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2370 "stripecount", val, sizeof(val));
2373 *scount = atoi(val);
2377 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2378 "stripesize", val, sizeof(val));
2385 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2386 "stripeoffset", val, sizeof(val));
2389 *soffset = atoi(val);
2396 * Tries to gather the default stripe attributes for a given filesystem. If
2397 * the attributes can be determined, they are cached for easy retreival the
2398 * next time they are needed. Only a single filesystem's attributes are
2401 int sattr_cache_get_defaults(const char *const fsname,
2402 const char *const pathname, unsigned int *scount,
2403 unsigned int *ssize, unsigned int *soffset)
2406 char fsname[PATH_MAX + 1];
2407 unsigned int stripecount;
2408 unsigned int stripesize;
2409 unsigned int stripeoffset;
2415 char fsname_buf[PATH_MAX + 1];
2416 unsigned int tmp[3];
2418 if (fsname == NULL) {
2419 rc = llapi_search_fsname(pathname, fsname_buf);
2423 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2426 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2428 * Ensure all 3 sattrs (count, size, and offset) are
2429 * successfully retrieved and stored in tmp before writing to
2432 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2436 cache.stripecount = tmp[0];
2437 cache.stripesize = tmp[1];
2438 cache.stripeoffset = tmp[2];
2439 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2443 *scount = cache.stripecount;
2445 *ssize = cache.stripesize;
2447 *soffset = cache.stripeoffset;
2452 static char *layout2name(__u32 layout_pattern)
2454 if (layout_pattern == LOV_PATTERN_MDT)
2456 else if (layout_pattern == LOV_PATTERN_RAID0)
2458 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2464 enum lov_dump_flags {
2465 LDF_IS_DIR = 0x0001,
2466 LDF_IS_RAW = 0x0002,
2467 LDF_INDENT = 0x0004,
2468 LDF_SKIP_OBJS = 0x0008,
2472 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2473 struct lov_user_ost_data_v1 *objects,
2474 int verbose, int depth, char *pool_name,
2475 enum lov_dump_flags flags)
2477 bool is_dir = flags & LDF_IS_DIR;
2478 bool is_raw = flags & LDF_IS_RAW;
2479 bool indent = flags & LDF_INDENT;
2480 bool yaml = flags & LDF_YAML;
2481 bool skip_objs = flags & LDF_SKIP_OBJS;
2482 char *prefix = is_dir ? "" : "lmm_";
2483 char *separator = "";
2484 char *space = indent ? " " : "";
2487 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2488 lmm_oi_set_seq(&lum->lmm_oi, 0);
2489 if (!indent && (verbose & VERBOSE_DETAIL))
2490 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2493 if (!yaml && !indent && depth && path &&
2494 ((verbose != VERBOSE_OBJID) || !is_dir))
2495 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2497 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2498 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2499 space, prefix, lum->lmm_magic);
2500 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2502 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2503 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2505 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2507 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2512 if (verbose & ~VERBOSE_DFID)
2513 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2515 /* This needs a bit of hand-holding since old 1.x lmm_oi
2516 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2517 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2518 * a real FID. Ideally the 2.x code would have stored this
2519 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2520 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2521 * worked properly (especially since IGIF FIDs use mds_inum as
2522 * the FID SEQ), but unfortunately that didn't happen.
2524 * Print it to look like an IGIF FID, even though the fields
2525 * are reversed on disk, so that it makes sense to userspace.
2527 * Don't use ostid_id() and ostid_seq(), since they assume the
2528 * oi_fid fields are in the right order. This is why there are
2529 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2531 * For newer layout types hopefully this will be a real FID. */
2532 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2533 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2534 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2535 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2536 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2538 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2541 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2545 if (verbose & VERBOSE_COUNT) {
2546 if (verbose & ~VERBOSE_COUNT)
2547 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2550 if (!is_raw && lum->lmm_stripe_count == 0 &&
2551 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2552 unsigned int scount;
2553 rc = sattr_cache_get_defaults(NULL, path,
2557 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2560 llapi_error(LLAPI_MSG_ERROR, rc,
2561 "Cannot determine default"
2564 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2565 lum->lmm_stripe_count ==
2566 (typeof(lum->lmm_stripe_count))(-1)
2567 ? -1 : lum->lmm_stripe_count);
2570 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2571 (__s16)lum->lmm_stripe_count);
2573 if (!yaml && is_dir)
2579 if (verbose & VERBOSE_SIZE) {
2580 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2581 if (verbose & ~VERBOSE_SIZE)
2582 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2584 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2586 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2589 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2591 llapi_error(LLAPI_MSG_ERROR, rc,
2592 "Cannot determine default"
2595 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2596 lum->lmm_stripe_size);
2598 if (!yaml && is_dir)
2604 if ((verbose & VERBOSE_LAYOUT)) {
2605 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2606 if (verbose & ~VERBOSE_LAYOUT)
2607 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2609 if (lov_pattern_supported(lum->lmm_pattern))
2610 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2611 layout2name(lum->lmm_pattern));
2613 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2614 separator = (!yaml && is_dir) ? " " : "\n";
2617 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2618 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2619 if (verbose & ~VERBOSE_GENERATION)
2620 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2622 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2623 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2627 if (verbose & VERBOSE_OFFSET) {
2628 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2629 if (verbose & ~VERBOSE_OFFSET)
2630 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2632 if (is_dir || skip_objs)
2633 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2634 lum->lmm_stripe_offset ==
2635 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2636 lum->lmm_stripe_offset);
2637 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2638 llapi_printf(LLAPI_MSG_NORMAL, "0");
2640 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2641 objects[0].l_ost_idx);
2642 if (!yaml && is_dir)
2648 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2649 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2650 if (verbose & ~VERBOSE_POOL)
2651 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2653 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2654 if (!yaml && is_dir)
2660 if (strlen(separator) != 0)
2661 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2664 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2665 struct lov_user_ost_data_v1 *objects,
2666 char *path, int obdindex, int depth,
2667 int header, enum lov_dump_flags flags)
2669 bool is_dir = flags & LDF_IS_DIR;
2670 bool indent = flags & LDF_INDENT;
2671 bool skip_objs = flags & LDF_SKIP_OBJS;
2672 bool yaml = flags & LDF_YAML;
2673 bool obdstripe = obdindex == OBD_NOT_FOUND;
2676 if (!obdstripe && !skip_objs) {
2677 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2678 if (obdindex == objects[i].l_ost_idx) {
2688 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2691 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2692 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2693 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2694 char *space = " - ";
2697 llapi_printf(LLAPI_MSG_NORMAL,
2698 "%6slmm_objects:\n", " ");
2700 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2702 llapi_printf(LLAPI_MSG_NORMAL,
2703 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2705 for (i = 0; i < lum->lmm_stripe_count; i++) {
2706 int idx = objects[i].l_ost_idx;
2707 long long oid = ostid_id(&objects[i].l_ost_oi);
2708 long long gr = ostid_seq(&objects[i].l_ost_oi);
2710 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2714 struct lu_fid fid = { 0 };
2716 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2717 llapi_printf(LLAPI_MSG_NORMAL,
2718 "%sl_ost_idx: %d\n", space, idx);
2719 llapi_printf(LLAPI_MSG_NORMAL,
2720 "%8sl_fid: "DFID_NOBRACE"\n",
2722 } else if (indent) {
2723 struct lu_fid fid = { 0 };
2725 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2726 llapi_printf(LLAPI_MSG_NORMAL,
2727 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2728 space, i, idx, PFID(&fid));
2731 sprintf(fmt, "%s%s%s\n",
2732 "\t%6u\t%14llu\t%#13llx\t",
2733 (fid_seq_is_rsvd(gr) ||
2734 fid_seq_is_mdt0(gr)) ?
2735 "%14llu" : "%#14llx", "%s");
2736 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2738 obdindex == idx ? " *" : "");
2742 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2745 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2746 char *path, int obdindex, int depth, int verbose,
2747 enum lov_dump_flags flags)
2749 struct lmv_user_mds_data *objects = lum->lum_objects;
2750 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2751 char *separator = "";
2752 bool yaml = flags & LDF_YAML;
2753 bool obdstripe = false;
2756 if (obdindex != OBD_NOT_FOUND) {
2757 if (lum->lum_stripe_count == 0) {
2758 if (obdindex == lum->lum_stripe_offset)
2761 for (i = 0; i < lum->lum_stripe_count; i++) {
2762 if (obdindex == objects[i].lum_mds) {
2763 llapi_printf(LLAPI_MSG_NORMAL,
2778 /* show all information default */
2780 if (lum->lum_magic == LMV_USER_MAGIC)
2781 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2782 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2784 verbose = VERBOSE_OBJID;
2787 if (depth && path && ((verbose != VERBOSE_OBJID)))
2788 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2790 if (verbose & VERBOSE_COUNT) {
2791 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2792 if (verbose & ~VERBOSE_COUNT)
2793 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2794 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2795 (int)lum->lum_stripe_count);
2796 if ((verbose & VERBOSE_OFFSET) && !yaml)
2802 if (verbose & VERBOSE_OFFSET) {
2803 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2804 if (verbose & ~VERBOSE_OFFSET)
2805 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2806 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2807 (int)lum->lum_stripe_offset);
2808 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2814 if (verbose & VERBOSE_HASH_TYPE) {
2815 unsigned int type = lum->lum_hash_type;
2817 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2818 if (verbose & ~VERBOSE_HASH_TYPE)
2819 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2820 if (type < LMV_HASH_TYPE_MAX)
2821 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2822 mdt_hash_name[type]);
2824 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2829 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2830 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2831 if (lum->lum_stripe_count > 0)
2832 llapi_printf(LLAPI_MSG_NORMAL,
2833 "mdtidx\t\t FID[seq:oid:ver]\n");
2834 for (i = 0; i < lum->lum_stripe_count; i++) {
2835 int idx = objects[i].lum_mds;
2836 struct lu_fid *fid = &objects[i].lum_fid;
2837 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2838 llapi_printf(LLAPI_MSG_NORMAL,
2839 "%6u\t\t "DFID"\t\t%s\n",
2841 obdindex == idx ? " *" : "");
2846 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2847 pool_name[0] != '\0') {
2848 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2849 if (verbose & ~VERBOSE_POOL)
2850 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2852 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2856 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2857 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2860 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2861 enum lov_dump_flags flags)
2863 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2864 int depth = param->fp_max_depth;
2865 int verbose = param->fp_verbose;
2866 bool yaml = flags & LDF_YAML;
2868 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2869 !(flags & LDF_IS_DIR)) && !yaml)
2870 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2872 if (verbose & VERBOSE_DETAIL) {
2873 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2874 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2875 " ", comp_v1->lcm_magic);
2876 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2877 " ", comp_v1->lcm_size);
2878 if (flags & LDF_IS_DIR)
2879 llapi_printf(LLAPI_MSG_NORMAL,
2880 "%2slcm_flags: %s\n", " ",
2881 comp_v1->lcm_mirror_count > 0 ?
2884 llapi_printf(LLAPI_MSG_NORMAL,
2885 "%2slcm_flags: %s\n", " ",
2886 llapi_layout_flags_string(comp_v1->lcm_flags));
2889 if (verbose & VERBOSE_GENERATION) {
2890 if (verbose & ~VERBOSE_GENERATION)
2891 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2893 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2896 if (verbose & VERBOSE_MIRROR_COUNT) {
2897 if (verbose & ~VERBOSE_MIRROR_COUNT)
2898 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2900 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2901 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2902 comp_v1->lcm_mirror_count + 1 : 1);
2905 if (verbose & VERBOSE_COMP_COUNT) {
2906 if (verbose & ~VERBOSE_COMP_COUNT)
2907 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2909 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2910 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2911 comp_v1->lcm_entry_count : 0);
2914 if (verbose & VERBOSE_DETAIL && !yaml)
2915 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2918 static void lcme_flags2str(__u32 comp_flags)
2924 llapi_printf(LLAPI_MSG_NORMAL, "0");
2927 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2928 if (comp_flags & comp_flags_table[i].cfn_flag) {
2930 llapi_printf(LLAPI_MSG_NORMAL, ",");
2931 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2932 comp_flags_table[i].cfn_name);
2933 comp_flags &= ~comp_flags_table[i].cfn_flag;
2939 llapi_printf(LLAPI_MSG_NORMAL, ",");
2940 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2944 static void lov_dump_comp_v1_entry(struct find_param *param,
2945 enum lov_dump_flags flags, int index)
2947 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2948 struct lov_comp_md_entry_v1 *entry;
2949 char *separator = "";
2950 int verbose = param->fp_verbose;
2951 bool yaml = flags & LDF_YAML;
2953 entry = &comp_v1->lcm_entries[index];
2956 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2958 if (verbose & VERBOSE_COMP_ID) {
2959 if (verbose & VERBOSE_DETAIL && !yaml)
2960 llapi_printf(LLAPI_MSG_NORMAL,
2961 "%slcme_id: ", " - ");
2962 else if (verbose & ~VERBOSE_COMP_ID)
2963 llapi_printf(LLAPI_MSG_NORMAL,
2964 "%4slcme_id: ", " ");
2965 if (entry->lcme_id != LCME_ID_INVAL)
2966 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2968 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2972 if (verbose & VERBOSE_MIRROR_ID) {
2973 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2974 if (verbose & ~VERBOSE_MIRROR_ID)
2975 llapi_printf(LLAPI_MSG_NORMAL,
2976 "%4slcme_mirror_id: ", " ");
2977 if (entry->lcme_id != LCME_ID_INVAL)
2978 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2979 mirror_id_of(entry->lcme_id));
2981 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2985 if (verbose & VERBOSE_COMP_FLAGS) {
2986 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2987 if (verbose & ~VERBOSE_COMP_FLAGS)
2988 llapi_printf(LLAPI_MSG_NORMAL,
2989 "%4slcme_flags: ", " ");
2990 lcme_flags2str(entry->lcme_flags);
2994 if (verbose & VERBOSE_COMP_START) {
2995 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2996 if (verbose & ~VERBOSE_COMP_START)
2997 llapi_printf(LLAPI_MSG_NORMAL,
2998 "%4slcme_extent.e_start: ", " ");
2999 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3000 entry->lcme_extent.e_start);
3004 if (verbose & VERBOSE_COMP_END) {
3005 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3006 if (verbose & ~VERBOSE_COMP_END)
3007 llapi_printf(LLAPI_MSG_NORMAL,
3008 "%4slcme_extent.e_end: ", " ");
3009 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3010 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3012 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3013 entry->lcme_extent.e_end);
3018 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3019 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3020 } else if (verbose & VERBOSE_DETAIL) {
3021 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3022 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3023 " ", entry->lcme_offset);
3024 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3025 " ", entry->lcme_size);
3026 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3028 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3032 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3033 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3035 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3036 * The table below gives the answers for the specified parameters (value and
3037 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3038 * --------------------------------------
3039 * 1 | file > limit; sign > 0 | -1 / -1 |
3040 * 2 | file = limit; sign > 0 | -1 / -1 |
3041 * 3 | file < limit; sign > 0 | ? / 1 |
3042 * 4 | file > limit; sign = 0 | -1 / -1 |
3043 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3044 * 6 | file < limit; sign = 0 | ? / -1 |
3045 * 7 | file > limit; sign < 0 | 1 / 1 |
3046 * 8 | file = limit; sign < 0 | ? / -1 |
3047 * 9 | file < limit; sign < 0 | ? / -1 |
3048 * --------------------------------------
3049 * Note: 5th actually means that the value is within the interval
3050 * (limit - margin, limit]. */
3051 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3052 int sign, int negopt, unsigned long long margin,
3058 /* Drop the fraction of margin (of days). */
3059 if (file + margin <= limit)
3061 } else if (sign == 0) {
3062 if (file <= limit && file + margin > limit)
3064 else if (file + margin <= limit)
3066 } else if (sign < 0) {
3073 return negopt ? ~ret + 1 : ret;
3076 static inline struct lov_user_md *
3077 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3079 return (struct lov_user_md *)((char *)comp_v1 +
3080 comp_v1->lcm_entries[ent_idx].lcme_offset);
3083 static inline struct lov_user_ost_data_v1 *
3084 lov_v1v3_objects(struct lov_user_md *v1)
3086 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3087 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3089 return v1->lmm_objects;
3093 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3095 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3096 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3097 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3099 pool_name[0] = '\0';
3103 print_last_init_comp(struct find_param *param)
3105 /* print all component info */
3106 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3109 /* print specific component info */
3110 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3111 param->fp_check_comp_start || param->fp_check_comp_end)
3117 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3121 if (param->fp_comp_end == LUSTRE_EOF) {
3122 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3123 match = end == LUSTRE_EOF ? 1 : -1;
3124 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3125 match = end == LUSTRE_EOF ? -1 : 1;
3126 else /* at least EOF */
3128 if (param->fp_exclude_comp_end)
3131 unsigned long long margin;
3133 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3134 match = find_value_cmp(end, param->fp_comp_end,
3135 param->fp_comp_end_sign,
3136 param->fp_exclude_comp_end, margin, 0);
3143 * An example of "getstripe -v" for a two components PFL file:
3146 * lcm_magic: 0x0BD60BD0
3150 * lcm_entry_count: 2
3154 * lcme_extent.e_start: 0
3155 * lcme_extent.e_end: 1048576
3159 * lmm_magic: 0x0BD10BD0
3160 * lmm_seq: 0x200000401
3161 * lmm_object_id: 0x1
3162 * lmm_fid: [0x200000401:0x1:0x0]
3163 * lmm_stripe_count: 1
3164 * lmm_stripe_size: 1048576
3165 * lmm_pattern: raid0
3167 * lmm_stripe_offset: 0
3169 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3173 * lcme_extent.e_start: 1048576
3174 * lcme_extent.e_end: EOF
3178 * lmm_magic: 0x0BD10BD0
3179 * lmm_seq: 0x200000401
3180 * lmm_object_id: 0x1
3181 * lmm_fid: [0x200000401:0x1:0x0]
3182 * lmm_stripe_count: 2
3183 * lmm_stripe_size: 1048576
3184 * lmm_pattern: raid0
3186 * lmm_stripe_offset: 1
3188 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3189 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3191 static void lov_dump_comp_v1(struct find_param *param, char *path,
3192 enum lov_dump_flags flags)
3194 struct lov_comp_md_entry_v1 *entry;
3195 struct lov_user_ost_data_v1 *objects;
3196 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3197 struct lov_user_md_v1 *v1;
3198 char pool_name[LOV_MAXPOOLNAME + 1];
3199 int obdindex = param->fp_obd_index;
3201 bool obdstripe = false;
3203 if (obdindex != OBD_NOT_FOUND) {
3204 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3205 i < comp_v1->lcm_entry_count; i++) {
3206 if (!(comp_v1->lcm_entries[i].lcme_flags &
3210 v1 = lov_comp_entry(comp_v1, i);
3211 objects = lov_v1v3_objects(v1);
3213 for (j = 0; j < v1->lmm_stripe_count; j++) {
3214 if (obdindex == objects[j].l_ost_idx) {
3227 lov_dump_comp_v1_header(param, path, flags);
3229 flags |= LDF_INDENT;
3231 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3232 entry = &comp_v1->lcm_entries[i];
3234 if (param->fp_check_comp_flags) {
3235 if (((param->fp_comp_flags & entry->lcme_flags) !=
3236 param->fp_comp_flags) ||
3237 (param->fp_comp_neg_flags & entry->lcme_flags))
3241 if (param->fp_check_comp_id &&
3242 param->fp_comp_id != entry->lcme_id)
3245 if (param->fp_check_comp_start) {
3246 match = find_value_cmp(entry->lcme_extent.e_start,
3247 param->fp_comp_start,
3248 param->fp_comp_start_sign,
3250 param->fp_comp_start_units, 0);
3255 if (param->fp_check_comp_end) {
3256 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3262 if (print_last_init_comp(param)) {
3264 * if part of stripe info is needed, we'd print only
3265 * the last instantiated component info.
3267 if (entry->lcme_flags & LCME_FL_INIT)
3273 if (entry->lcme_flags & LCME_FL_INIT) {
3274 if (obdindex != OBD_NOT_FOUND) {
3275 flags |= LDF_SKIP_OBJS;
3276 v1 = lov_comp_entry(comp_v1, i);
3277 objects = lov_v1v3_objects(v1);
3279 for (j = 0; j < v1->lmm_stripe_count; j++) {
3280 if (obdindex == objects[j].l_ost_idx) {
3281 flags &= ~LDF_SKIP_OBJS;
3286 flags &= ~LDF_SKIP_OBJS;
3289 flags |= LDF_SKIP_OBJS;
3292 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3294 lov_dump_comp_v1_entry(param, flags, i);
3296 v1 = lov_comp_entry(comp_v1, i);
3297 objects = lov_v1v3_objects(v1);
3298 lov_v1v3_pool_name(v1, pool_name);
3300 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3301 param->fp_max_depth, param->fp_verbose,
3304 if (print_last_init_comp(param)) {
3306 * directory layout contains only layout template, print the
3310 i = comp_v1->lcm_entry_count - 1;
3313 flags &= ~LDF_SKIP_OBJS;
3315 lov_dump_comp_v1_entry(param, flags, i);
3317 v1 = lov_comp_entry(comp_v1, i);
3318 objects = lov_v1v3_objects(v1);
3319 lov_v1v3_pool_name(v1, pool_name);
3321 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3322 param->fp_max_depth, param->fp_verbose,
3327 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3328 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3331 static inline bool has_any_comp_options(struct find_param *param)
3333 int verbose = param->fp_verbose;
3335 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3336 param->fp_check_comp_start || param->fp_check_comp_end ||
3337 param->fp_check_comp_flags)
3340 /* show full layout information, not component specific */
3341 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3344 return verbose & VERBOSE_COMP_OPTS;
3347 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3350 struct lov_user_md *lum = &orig->lmd_lmm;
3351 struct lov_user_mds_data *new;
3352 struct lov_comp_md_v1 *comp_v1;
3353 struct lov_comp_md_entry_v1 *ent;
3354 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3355 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3358 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3360 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3364 memcpy(new, orig, sizeof(lstat_t));
3366 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3367 comp_v1->lcm_magic = lum->lmm_magic;
3368 comp_v1->lcm_size = lum_off + lum_size;
3369 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3370 comp_v1->lcm_flags = 0;
3371 comp_v1->lcm_entry_count = 1;
3373 ent = &comp_v1->lcm_entries[0];
3375 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3376 ent->lcme_extent.e_start = 0;
3377 ent->lcme_extent.e_end = LUSTRE_EOF;
3378 ent->lcme_offset = lum_off;
3379 ent->lcme_size = lum_size;
3381 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3386 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3387 enum lov_dump_flags flags)
3389 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3391 if (has_any_comp_options(param)) {
3392 struct lov_user_mds_data *new_lmd, *orig_lmd;
3394 orig_lmd = param->fp_lmd;
3395 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3396 if (new_lmd != NULL) {
3397 param->fp_lmd = new_lmd;
3398 lov_dump_comp_v1(param, path, flags);
3399 param->fp_lmd = orig_lmd;
3405 if (magic == LOV_USER_MAGIC_V1) {
3406 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3407 param->fp_lmd->lmd_lmm.lmm_objects,
3408 path, param->fp_obd_index,
3409 param->fp_max_depth, param->fp_verbose,
3412 char pool_name[LOV_MAXPOOLNAME + 1];
3413 struct lov_user_ost_data_v1 *objects;
3414 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3416 snprintf(pool_name, sizeof(pool_name), "%s",
3417 lmmv3->lmm_pool_name);
3418 objects = lmmv3->lmm_objects;
3419 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3420 objects, path, param->fp_obd_index,
3421 param->fp_max_depth, param->fp_verbose,
3426 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3427 enum lov_dump_flags flags)
3431 if (param->fp_get_lmv || param->fp_get_default_lmv)
3432 magic = (__u32)param->fp_lmv_md->lum_magic;
3434 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3437 flags |= LDF_IS_RAW;
3442 case LOV_USER_MAGIC_V1:
3443 case LOV_USER_MAGIC_V3:
3444 lov_dump_plain_user_lmm(param, path, flags);
3447 case LMV_USER_MAGIC: {
3448 char pool_name[LOV_MAXPOOLNAME + 1];
3449 struct lmv_user_md *lum;
3451 lum = (struct lmv_user_md *)param->fp_lmv_md;
3452 snprintf(pool_name, sizeof(pool_name), "%s",
3453 lum->lum_pool_name);
3454 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3455 param->fp_max_depth, param->fp_verbose,
3459 case LOV_USER_MAGIC_COMP_V1:
3460 lov_dump_comp_v1(param, path, flags);
3463 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3464 "(expecting one of %#x %#x %#x %#x)\n",
3465 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3466 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3467 LMV_USER_MAGIC, LMV_MAGIC_V1);
3472 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3478 fname = strrchr(path, '/');
3480 /* It should be a file (or other non-directory) */
3481 if (fname == NULL) {
3482 dname = (char *)malloc(2);
3486 fname = (char *)path;
3488 dname = (char *)malloc(fname - path + 1);
3491 strncpy(dname, path, fname - path);
3492 dname[fname - path] = '\0';
3496 fd = open(dname, O_RDONLY | O_NONBLOCK);
3503 strcpy((char *)lum, fname);
3504 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3507 if (close(fd) == -1 && rc == 0)
3514 int llapi_file_lookup(int dirfd, const char *name)
3516 struct obd_ioctl_data data = { 0 };
3521 if (dirfd < 0 || name == NULL)
3524 data.ioc_version = OBD_IOCTL_VERSION;
3525 data.ioc_len = sizeof(data);
3526 data.ioc_inlbuf1 = (char *)name;
3527 data.ioc_inllen1 = strlen(name) + 1;
3529 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3531 llapi_error(LLAPI_MSG_ERROR, rc,
3532 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3537 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3543 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3544 * Return -1 or 1 if file timestamp does not or does match the given criteria
3545 * correspondingly. Return 0 if the MDS time is being checked and there are
3546 * attributes on OSTs and it is not yet clear if the timespamp matches.
3548 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3549 * updated timestamps. */
3550 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3555 /* Check if file is accepted. */
3556 if (param->fp_atime) {
3557 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3558 param->fp_asign, param->fp_exclude_atime,
3565 if (param->fp_mtime) {
3566 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3567 param->fp_msign, param->fp_exclude_mtime,
3572 /* If the previous check matches, but this one is not yet clear,
3573 * we should return 0 to do an RPC on OSTs. */
3578 if (param->fp_ctime) {
3579 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3580 param->fp_csign, param->fp_exclude_ctime,
3585 /* If the previous check matches, but this one is not yet clear,
3586 * we should return 0 to do an RPC on OSTs. */
3595 * Check whether the stripes matches the indexes user provided
3599 static int check_obd_match(struct find_param *param)
3601 struct lov_user_ost_data_v1 *objects;
3602 struct lov_comp_md_v1 *comp_v1 = NULL;
3603 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3604 lstat_t *st = ¶m->fp_lmd->lmd_st;
3605 int i, j, k, count = 1;
3607 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3610 if (!S_ISREG(st->st_mode))
3613 /* Only those files should be accepted, which have a
3614 * stripe on the specified OST. */
3615 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3616 comp_v1 = (struct lov_comp_md_v1 *)v1;
3617 count = comp_v1->lcm_entry_count;
3620 for (i = 0; i < count; i++) {
3622 v1 = lov_comp_entry(comp_v1, i);
3624 objects = lov_v1v3_objects(v1);
3626 for (j = 0; j < v1->lmm_stripe_count; j++) {
3627 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3630 for (k = 0; k < param->fp_num_obds; k++) {
3631 if (param->fp_obd_indexes[k] ==
3632 objects[j].l_ost_idx)
3633 return !param->fp_exclude_obd;
3638 return param->fp_exclude_obd;
3641 static int check_mdt_match(struct find_param *param)
3645 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3648 /* FIXME: For striped dir, we should get stripe information and check */
3649 for (i = 0; i < param->fp_num_mdts; i++) {
3650 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3651 return !param->fp_exclude_mdt;
3654 if (param->fp_exclude_mdt)
3661 * Check whether the obd is active or not, if it is
3662 * not active, just print the object affected by this
3665 static int print_failed_tgt(struct find_param *param, char *path, int type)
3667 struct obd_statfs stat_buf;
3668 struct obd_uuid uuid_buf;
3671 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3674 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3675 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3676 ret = llapi_obd_statfs(path, type,
3677 param->fp_obd_index, &stat_buf,
3680 llapi_printf(LLAPI_MSG_NORMAL,
3681 "obd_uuid: %s failed %s ",
3682 param->fp_obd_uuid->uuid,
3689 static int find_check_stripe_size(struct find_param *param)
3691 struct lov_comp_md_v1 *comp_v1 = NULL;
3692 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3693 int ret, i, count = 1;
3695 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3696 comp_v1 = (struct lov_comp_md_v1 *)v1;
3697 count = comp_v1->lcm_entry_count;
3698 ret = param->fp_exclude_stripe_size ? 1 : -1;
3701 for (i = 0; i < count; i++) {
3703 v1 = lov_comp_entry(comp_v1, i);
3705 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3706 param->fp_stripe_size_sign,
3707 param->fp_exclude_stripe_size,
3708 param->fp_stripe_size_units, 0);
3709 /* If any stripe_size matches */
3717 static __u32 find_get_stripe_count(struct find_param *param)
3719 struct lov_comp_md_v1 *comp_v1 = NULL;
3720 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3722 __u32 stripe_count = 0;
3724 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3725 comp_v1 = (struct lov_comp_md_v1 *)v1;
3726 count = comp_v1->lcm_entry_count;
3729 for (i = 0; i < count; i++) {
3731 v1 = lov_comp_entry(comp_v1, i);
3732 stripe_count += v1->lmm_stripe_count;
3735 return stripe_count;
3738 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3740 static int find_check_layout(struct find_param *param)
3742 struct lov_comp_md_v1 *comp_v1 = NULL;
3743 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3745 bool found = false, valid = false;
3747 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3748 comp_v1 = (struct lov_comp_md_v1 *)v1;
3749 count = comp_v1->lcm_entry_count;
3752 for (i = 0; i < count; i++) {
3754 v1 = lov_comp_entry(comp_v1, i);
3756 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3760 if (v1->lmm_pattern & param->fp_layout) {
3769 if ((found && !param->fp_exclude_layout) ||
3770 (!found && param->fp_exclude_layout))
3776 static int find_check_pool(struct find_param *param)
3778 struct lov_comp_md_v1 *comp_v1 = NULL;
3779 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3780 struct lov_user_md_v3 *v3 = (void *)v1;
3784 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3785 comp_v1 = (struct lov_comp_md_v1 *)v1;
3786 count = comp_v1->lcm_entry_count;
3787 /* empty requested pool is taken as no pool search */
3788 if (count == 0 && param->fp_poolname[0] == '\0')
3792 for (i = 0; i < count; i++) {
3793 if (comp_v1 != NULL)
3794 v1 = lov_comp_entry(comp_v1, i);
3796 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3797 (param->fp_poolname[0] == '\0')) ||
3798 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3799 (strncmp(v3->lmm_pool_name,
3800 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3801 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3802 (strcmp(param->fp_poolname, "*") == 0))) {
3808 if ((found && !param->fp_exclude_pool) ||
3809 (!found && param->fp_exclude_pool))
3815 static int find_check_comp_options(struct find_param *param)
3817 lstat_t *st = ¶m->fp_lmd->lmd_st;
3818 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3819 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3820 struct lov_comp_md_entry_v1 *entry;
3823 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3824 comp_v1 = (struct lov_comp_md_v1 *)v1;
3826 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3827 if (forged_v1 == NULL)
3829 comp_v1 = forged_v1;
3830 comp_v1->lcm_entry_count = 1;
3831 entry = &comp_v1->lcm_entries[0];
3832 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3833 entry->lcme_extent.e_start = 0;
3834 entry->lcme_extent.e_end = LUSTRE_EOF;
3837 /* invalid case, don't match for any kind of search. */
3838 if (comp_v1->lcm_entry_count == 0) {
3843 if (param->fp_check_comp_count) {
3844 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3845 param->fp_comp_count,
3846 param->fp_comp_count_sign,
3847 param->fp_exclude_comp_count, 1, 0);
3853 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3854 entry = &comp_v1->lcm_entries[i];
3856 if (param->fp_check_comp_flags) {
3858 if (((param->fp_comp_flags & entry->lcme_flags) !=
3859 param->fp_comp_flags) ||
3860 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3866 if (param->fp_check_comp_start) {
3867 ret = find_value_cmp(entry->lcme_extent.e_start,
3868 param->fp_comp_start,
3869 param->fp_comp_start_sign,
3870 param->fp_exclude_comp_start,
3871 param->fp_comp_start_units, 0);
3876 if (param->fp_check_comp_end) {
3877 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3883 /* the component matches all criteria */
3887 if (forged_v1 != NULL)
3892 static int find_check_mirror_options(struct find_param *param)
3894 struct lov_comp_md_v1 *comp_v1;
3895 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3898 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3901 comp_v1 = (struct lov_comp_md_v1 *)v1;
3903 if (param->fp_check_mirror_count) {
3904 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3905 param->fp_mirror_count,
3906 param->fp_mirror_count_sign,
3907 param->fp_exclude_mirror_count, 1, 0);
3912 if (param->fp_check_mirror_state) {
3914 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
3916 if ((param->fp_mirror_state != 0 &&
3917 file_state != param->fp_mirror_state) ||
3918 file_state == param->fp_mirror_neg_state)
3925 static bool find_check_lmm_info(struct find_param *param)
3927 return param->fp_check_pool || param->fp_check_stripe_count ||
3928 param->fp_check_stripe_size || param->fp_check_layout ||
3929 param->fp_check_comp_count || param->fp_check_comp_end ||
3930 param->fp_check_comp_start || param->fp_check_comp_flags ||
3931 param->fp_check_mirror_count ||
3932 param->fp_check_mirror_state ||
3933 param->fp_check_projid;
3937 * Get file/directory project id.
3938 * by the open fd resides on.
3939 * Return 0 and project id on success, or -ve errno.
3941 static int fget_projid(int fd, int *projid)
3946 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3950 *projid = fsx.fsx_projid;
3954 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3955 void *data, struct dirent64 *de)
3957 struct find_param *param = (struct find_param *)data;
3958 DIR *dir = dirp == NULL ? NULL : *dirp;
3959 int decision = 1; /* 1 is accepted; -1 is rejected. */
3960 lstat_t *st = ¶m->fp_lmd->lmd_st;
3962 int checked_type = 0;
3964 __u32 stripe_count = 0;
3967 if (parent == NULL && dir == NULL)
3970 /* If a regular expression is presented, make the initial decision */
3971 if (param->fp_pattern != NULL) {
3972 char *fname = strrchr(path, '/');
3973 fname = (fname == NULL ? path : fname + 1);
3974 ret = fnmatch(param->fp_pattern, fname, 0);
3975 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3976 (ret == 0 && param->fp_exclude_pattern))
3980 /* See if we can check the file type from the dirent. */
3981 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3984 if (DTTOIF(de->d_type) == param->fp_type) {
3985 if (param->fp_exclude_type)
3988 if (!param->fp_exclude_type)
3995 /* Request MDS for the stat info if some of these parameters need
3996 * to be compared. */
3997 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3998 param->fp_check_uid || param->fp_check_gid ||
3999 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4000 param->fp_check_size || param->fp_check_blocks ||
4001 find_check_lmm_info(param) ||
4002 param->fp_check_mdt_count || param->fp_check_hash_type)
4005 if (param->fp_type != 0 && checked_type == 0)
4008 if (decision == 0) {
4009 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4010 param->fp_get_lmv = 1;
4011 ret = cb_get_dirstripe(path, dir, param);
4016 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4017 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4018 param->fp_lum_size, GET_LMD_INFO);
4019 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4020 find_check_lmm_info(param)) {
4021 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4023 /* We need to "fake" the "use the default" values
4024 * since the lmm struct is zeroed out at this point. */
4025 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4026 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4028 ostid_set_seq(&lmm->lmm_oi,
4029 FID_SEQ_LOV_DEFAULT);
4030 lmm->lmm_stripe_size = 0;
4031 lmm->lmm_stripe_count = 0;
4032 lmm->lmm_stripe_offset = -1;
4034 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4036 ret = llapi_file_fget_mdtidx(dirfd(dir),
4037 ¶m->fp_file_mdt_index);
4038 } else if (S_ISREG(st->st_mode)) {
4039 /* FIXME: we could get the MDT index from the
4040 * file's FID in lmd->lmd_lmm.lmm_oi without
4041 * opening the file, once we are sure that
4042 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4043 * That would still be an ioctl() to map the
4044 * FID to the MDT, but not an open RPC. */
4045 fd = open(path, O_RDONLY);
4047 ret = llapi_file_fget_mdtidx(fd,
4048 ¶m->fp_file_mdt_index);
4053 /* For a special file, we assume it resides on
4054 * the same MDT as the parent directory. */
4055 ret = llapi_file_fget_mdtidx(dirfd(parent),
4056 ¶m->fp_file_mdt_index);
4067 stripe_count = find_get_stripe_count(param);
4071 if (param->fp_type && !checked_type) {
4072 if ((st->st_mode & S_IFMT) == param->fp_type) {
4073 if (param->fp_exclude_type)
4076 if (!param->fp_exclude_type)
4082 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4083 if (lustre_fs && param->fp_got_uuids &&
4084 param->fp_dev != st->st_dev) {
4085 /* A lustre/lustre mount point is crossed. */
4086 param->fp_got_uuids = 0;
4087 param->fp_obds_printed = 0;
4088 param->fp_mdt_index = OBD_NOT_FOUND;
4089 param->fp_obd_index = OBD_NOT_FOUND;
4092 if (lustre_fs && !param->fp_got_uuids) {
4093 ret = setup_target_indexes(dir ? dir : parent, path,
4098 param->fp_dev = st->st_dev;
4099 } else if (!lustre_fs && param->fp_got_uuids) {
4100 /* A lustre/non-lustre mount point is crossed. */
4101 param->fp_got_uuids = 0;
4102 param->fp_mdt_index = OBD_NOT_FOUND;
4103 param->fp_obd_index = OBD_NOT_FOUND;
4107 if (param->fp_check_stripe_size) {
4108 decision = find_check_stripe_size(param);
4113 if (param->fp_check_stripe_count) {
4114 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4115 param->fp_stripe_count_sign,
4116 param->fp_exclude_stripe_count, 1, 0);
4121 if (param->fp_check_mdt_count) {
4122 decision = find_value_cmp(
4123 param->fp_lmv_md->lum_stripe_count,
4124 param->fp_mdt_count,
4125 param->fp_mdt_count_sign,
4126 param->fp_exclude_mdt_count, 1, 0);
4131 if (param->fp_check_layout) {
4132 decision = find_check_layout(param);
4137 if (param->fp_check_hash_type) {
4140 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4141 if ((found && param->fp_exclude_hash_type) ||
4142 (!found && !param->fp_exclude_hash_type)) {
4148 /* If an OBD UUID is specified but none matches, skip this file. */
4149 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4150 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4153 /* If an OST or MDT UUID is given, and some OST matches,
4155 if (param->fp_obd_index != OBD_NOT_FOUND ||
4156 param->fp_mdt_index != OBD_NOT_FOUND) {
4157 if (param->fp_obd_uuid) {
4158 if (check_obd_match(param)) {
4159 /* If no mdtuuid is given, we are done.
4160 * Otherwise, fall through to the mdtuuid
4162 if (!param->fp_mdt_uuid)
4169 if (param->fp_mdt_uuid) {
4170 if (check_mdt_match(param))
4177 if (param->fp_check_uid) {
4178 if (st->st_uid == param->fp_uid) {
4179 if (param->fp_exclude_uid)
4182 if (!param->fp_exclude_uid)
4187 if (param->fp_check_gid) {
4188 if (st->st_gid == param->fp_gid) {
4189 if (param->fp_exclude_gid)
4192 if (!param->fp_exclude_gid)
4197 if (param->fp_check_projid) {
4201 fd = open(path, O_RDONLY);
4204 ret = fget_projid(fd, &projid);
4209 if (projid == param->fp_projid) {
4210 if (param->fp_exclude_uid)
4213 if (!param->fp_exclude_projid)
4218 if (param->fp_check_pool) {
4219 decision = find_check_pool(param);
4224 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4225 param->fp_check_comp_start || param->fp_check_comp_end) {
4226 decision = find_check_comp_options(param);
4231 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4232 decision = find_check_mirror_options(param);
4237 /* Check the time on mds. */
4239 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4242 for_mds = lustre_fs ?
4243 (S_ISREG(st->st_mode) && stripe_count) : 0;
4244 decision = find_time_check(st, param, for_mds);
4249 /* If file still fits the request, ask ost for updated info.
4250 The regular stat is almost of the same speed as some new
4251 'glimpse-size-ioctl'. */
4253 if ((param->fp_check_size || param->fp_check_blocks) &&
4254 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4258 /* For regular files with the stripe the decision may have not
4259 * been taken yet if *time or size is to be checked. */
4260 if (param->fp_obd_index != OBD_NOT_FOUND)
4261 print_failed_tgt(param, path, LL_STATFS_LOV);
4263 if (param->fp_mdt_index != OBD_NOT_FOUND)
4264 print_failed_tgt(param, path, LL_STATFS_LMV);
4267 ret = fstat_f(dirfd(dir), st);
4268 else if (de != NULL)
4269 ret = fstatat_f(dirfd(parent), de->d_name, st,
4270 AT_SYMLINK_NOFOLLOW);
4272 ret = lstat_f(path, st);
4275 if (errno == ENOENT) {
4276 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4277 "warning: %s: %s does not exist",
4282 llapi_error(LLAPI_MSG_ERROR, ret,
4283 "%s: IOC_LOV_GETINFO on %s failed",
4289 /* Check the time on osc. */
4290 decision = find_time_check(st, param, 0);
4295 if (param->fp_check_size) {
4296 decision = find_value_cmp(st->st_size, param->fp_size,
4297 param->fp_size_sign,
4298 param->fp_exclude_size,
4299 param->fp_size_units, 0);
4304 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4305 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4306 param->fp_blocks_sign,
4307 param->fp_exclude_blocks,
4308 param->fp_blocks_units, 0);
4313 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4314 if (param->fp_zero_end)
4315 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4317 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4321 /* Do not get down anymore? */
4322 if (param->fp_depth == param->fp_max_depth) {
4333 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4334 void *param_data, struct dirent64 *de)
4336 struct find_param *param = (struct find_param *)param_data;
4337 DIR *tmp_parent = parent;
4338 char raw[MAX_IOC_BUFLEN] = {'\0'};
4340 struct obd_ioctl_data data = { 0 };
4347 if (parent == NULL && dirp == NULL)
4353 if (parent == NULL) {
4354 tmp_parent = opendir_parent(path);
4355 if (tmp_parent == NULL) {
4358 llapi_error(LLAPI_MSG_ERROR, ret,
4359 "can not open %s", path);
4364 fd = dirfd(tmp_parent);
4366 path_copy = strdup(path);
4367 filename = basename(path_copy);
4368 data.ioc_inlbuf1 = (char *)filename;
4369 data.ioc_inllen1 = strlen(filename) + 1;
4370 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4371 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4372 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4374 llapi_error(LLAPI_MSG_ERROR, ret,
4375 "llapi_obd_statfs: error packing ioctl data");
4380 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4382 if (errno == EBUSY && !retry) {
4383 /* because migrate may not be able to lock all involved
4384 * objects in order, for some of them it try lock, while
4385 * there may be conflicting COS locks and cause migrate
4386 * fail with EBUSY, hope a sync() could cause
4387 * transaction commit and release these COS locks. */
4393 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4394 path, strerror(-ret), ret);
4396 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4397 fprintf(stdout, "migrate %s to MDT%d\n",
4398 path, param->fp_mdt_index);
4403 /* If the directory is being migration, we need
4404 * close the directory after migration,
4405 * so the old directory cache will be cleanup
4406 * on the client side, and re-open to get the
4407 * new directory handle */
4408 *dirp = opendir(path);
4409 if (*dirp == NULL) {
4411 llapi_error(LLAPI_MSG_ERROR, ret,
4412 "%s: Failed to open '%s'", __func__, path);
4417 closedir(tmp_parent);
4424 int llapi_migrate_mdt(char *path, struct find_param *param)
4426 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4429 int llapi_mv(char *path, struct find_param *param)
4431 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4432 static bool printed;
4435 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4436 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4440 return llapi_migrate_mdt(path, param);
4443 int llapi_find(char *path, struct find_param *param)
4445 return param_callback(path, cb_find_init, cb_common_fini, param);
4449 * Get MDT number that the file/directory inode referenced
4450 * by the open fd resides on.
4451 * Return 0 and mdtidx on success, or -ve errno.
4453 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4455 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4460 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4461 struct dirent64 *de)
4463 struct find_param *param = (struct find_param *)data;
4464 DIR *d = dirp == NULL ? NULL : *dirp;
4468 if (parent == NULL && d == NULL)
4472 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4473 } else /* if (parent) */ {
4476 fd = open(path, O_RDONLY | O_NOCTTY);
4478 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4486 if (ret == -ENODATA) {
4487 if (!param->fp_obd_uuid)
4488 llapi_printf(LLAPI_MSG_NORMAL,
4489 "'%s' has no stripe info\n", path);
4491 } else if (ret == -ENOENT) {
4492 llapi_error(LLAPI_MSG_WARN, ret,
4493 "warning: %s: '%s' does not exist",
4496 } else if (ret == -ENOTTY) {
4497 llapi_error(LLAPI_MSG_ERROR, ret,
4498 "%s: '%s' not on a Lustre fs",
4501 llapi_error(LLAPI_MSG_ERROR, ret,
4502 "error: %s: '%s' failed get_mdtidx",
4508 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4509 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4511 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4515 /* Do not go down anymore? */
4516 if (param->fp_depth == param->fp_max_depth)
4524 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4525 struct dirent64 *de)
4527 struct find_param *param = (struct find_param *)data;
4528 DIR *d = dirp == NULL ? NULL : *dirp;
4531 if (parent == NULL && d == NULL)
4534 if (param->fp_obd_uuid) {
4535 param->fp_quiet = 1;
4536 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4541 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4542 ret = cb_get_dirstripe(path, d, param);
4544 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4545 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4546 param->fp_lum_size, GET_LMD_STRIPE);
4551 if (errno == ENODATA && d != NULL) {
4552 /* We need to "fake" the "use the default" values
4553 * since the lmm struct is zeroed out at this point.
4554 * The magic needs to be set in order to satisfy
4555 * a check later on in the code path.
4556 * The object_seq needs to be set for the "(Default)"
4557 * prefix to be displayed. */
4558 if (param->fp_get_default_lmv) {
4559 struct lmv_user_md *lum = param->fp_lmv_md;
4561 lum->lum_magic = LMV_USER_MAGIC;
4562 lum->lum_stripe_count = 0;
4563 lum->lum_stripe_offset = -1;
4565 } else if (param->fp_get_lmv) {
4566 struct lmv_user_md *lum = param->fp_lmv_md;
4569 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4572 lum->lum_magic = LMV_MAGIC_V1;
4573 lum->lum_stripe_count = 0;
4574 lum->lum_stripe_offset = mdtidx;
4577 struct lov_user_md *lmm =
4578 ¶m->fp_lmd->lmd_lmm;
4580 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4582 ostid_set_seq(&lmm->lmm_oi,
4583 FID_SEQ_LOV_DEFAULT);
4584 lmm->lmm_stripe_count = 0;
4585 lmm->lmm_stripe_size = 0;
4586 lmm->lmm_stripe_offset = -1;
4589 } else if (errno == ENODATA && parent != NULL) {
4590 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4591 llapi_printf(LLAPI_MSG_NORMAL,
4592 "%s has no stripe info\n", path);
4594 } else if (errno == ENOENT) {
4595 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4596 "warning: %s: %s does not exist",
4599 } else if (errno == ENOTTY) {
4601 llapi_error(LLAPI_MSG_ERROR, ret,
4602 "%s: '%s' not on a Lustre fs?",
4607 llapi_error(LLAPI_MSG_ERROR, ret,
4608 "error: %s: %s failed for %s",
4609 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4610 "IOC_MDC_GETFILESTRIPE", path);
4617 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4618 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4621 /* Do not get down anymore? */
4622 if (param->fp_depth == param->fp_max_depth)
4630 int llapi_getstripe(char *path, struct find_param *param)
4632 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4633 cb_get_mdt_index : cb_getstripe,
4634 cb_common_fini, param);
4637 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4638 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4640 char raw[MAX_IOC_BUFLEN] = {'\0'};
4642 struct obd_ioctl_data data = { 0 };
4645 data.ioc_inlbuf1 = (char *)&type;
4646 data.ioc_inllen1 = sizeof(__u32);
4647 data.ioc_inlbuf2 = (char *)&index;
4648 data.ioc_inllen2 = sizeof(__u32);
4649 data.ioc_pbuf1 = (char *)stat_buf;
4650 data.ioc_plen1 = sizeof(struct obd_statfs);
4651 data.ioc_pbuf2 = (char *)uuid_buf;
4652 data.ioc_plen2 = sizeof(struct obd_uuid);
4654 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4656 llapi_error(LLAPI_MSG_ERROR, rc,
4657 "llapi_obd_statfs: error packing ioctl data");
4661 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4663 return rc < 0 ? -errno : 0;
4666 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4667 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4672 fd = open(path, O_RDONLY);
4675 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4677 /* If we can't even open a file on the filesystem (e.g. with
4678 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4682 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4689 #define MAX_STRING_SIZE 128
4691 int llapi_ping(char *obd_type, char *obd_name)
4697 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4698 obd_type, obd_name);
4702 fd = open(path.gl_pathv[0], O_WRONLY);
4705 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4710 /* The purpose is to send a byte as a ping, whatever this byte is. */
4711 /* coverity[uninit_use_in_call] */
4712 rc = write(fd, buf, 1);
4720 cfs_free_param_data(&path);
4724 int llapi_target_iterate(int type_num, char **obd_type,
4725 void *args, llapi_cb_t cb)
4727 char buf[MAX_STRING_SIZE];
4732 rc = cfs_get_param_paths(¶m, "devices");
4736 fp = fopen(param.gl_pathv[0], "r");
4739 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4744 while (fgets(buf, sizeof(buf), fp) != NULL) {
4745 char *obd_type_name = NULL;
4746 char *obd_name = NULL;
4747 char *obd_uuid = NULL;
4749 struct obd_statfs osfs_buffer;
4751 while(bufp[0] == ' ')
4754 for(i = 0; i < 3; i++) {
4755 obd_type_name = strsep(&bufp, " ");
4757 obd_name = strsep(&bufp, " ");
4758 obd_uuid = strsep(&bufp, " ");
4760 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4762 for (i = 0; i < type_num; i++) {
4763 if (strcmp(obd_type_name, obd_type[i]) != 0)
4766 cb(obd_type_name, obd_name, obd_uuid, args);
4771 cfs_free_param_data(¶m);
4775 static void do_target_check(char *obd_type_name, char *obd_name,
4776 char *obd_uuid, void *args)
4780 rc = llapi_ping(obd_type_name, obd_name);
4781 if (rc == ENOTCONN) {
4782 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4784 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4786 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4790 int llapi_target_check(int type_num, char **obd_type, char *dir)
4792 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4795 #undef MAX_STRING_SIZE
4797 /* Is this a lustre fs? */
4798 int llapi_is_lustre_mnttype(const char *type)
4800 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4803 /* Is this a lustre client fs? */
4804 int llapi_is_lustre_mnt(struct mntent *mnt)
4806 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4807 strstr(mnt->mnt_fsname, ":/") != NULL);
4810 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4812 char fsname[PATH_MAX + 1];
4816 rc = llapi_search_fsname(mnt, fsname);
4820 root = open(mnt, O_RDONLY | O_DIRECTORY);
4823 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4827 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4835 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4836 * format must have %s%s, buf must be > 16
4837 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4838 * then buf = "lustre-MDT0000"
4840 static int get_mdtname(char *name, char *format, char *buf)
4842 char suffix[]="-MDT0000";
4843 int len = strlen(name);
4845 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4846 name[len - 5] = '\0';
4851 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4854 /* Not enough room to add suffix */
4855 llapi_err_noerrno(LLAPI_MSG_ERROR,
4856 "Invalid MDT name |%s|", name);
4861 return sprintf(buf, format, name, suffix);
4864 /** ioctl on filsystem root, with mdtindex sent as data
4865 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4866 * \param mdtidxp pointer to integer within data to be filled in with the
4867 * mdt index (0 if no mdt is specified). NULL won't be filled.
4869 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4877 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4878 Open root and parse mdt index. */
4879 if (mdtname[0] == '/') {
4881 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4882 (char *)mdtname, -1);
4884 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4886 ptr = fsname + strlen(fsname) - 8;
4888 index = strtol(ptr + 4, NULL, 16);
4889 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4893 llapi_err_noerrno(LLAPI_MSG_ERROR,
4894 "Can't open %s: %d\n", mdtname, rc);
4901 rc = ioctl(fd, opc, data);
4910 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4911 int buflen, long long *recno, int *linkno)
4913 const char *fidstr_orig = fidstr;
4915 struct getinfo_fid2path *gf;
4920 while (*fidstr == '[')
4923 sscanf(fidstr, SFID, RFID(&fid));
4924 if (!fid_is_sane(&fid)) {
4925 llapi_err_noerrno(LLAPI_MSG_ERROR,
4926 "bad FID format '%s', should be [seq:oid:ver]"
4927 " (e.g. "DFID")\n", fidstr_orig,
4928 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4932 gf = malloc(sizeof(*gf) + buflen);
4937 gf->gf_recno = *recno;
4938 gf->gf_linkno = *linkno;
4939 gf->gf_pathlen = buflen;
4941 /* Take path or fsname */
4942 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4947 /* strip out instances of // */
4948 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4949 if ((*a == '/') && (*(a + 1) == '/'))
4956 if (buf[0] == '\0') { /* ROOT path */
4961 *recno = gf->gf_recno;
4962 *linkno = gf->gf_linkno;
4969 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
4972 struct lustre_mdt_attrs *lma;
4976 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4978 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4981 lma = (struct lustre_mdt_attrs *)buf;
4982 fid_le_to_cpu(fid, &lma->lma_self_fid);
4986 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
4991 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5000 int llapi_fd2fid(int fd, struct lu_fid *fid)
5004 memset(fid, 0, sizeof(*fid));
5006 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5007 if (rc == -EINVAL || rc == -ENOTTY)
5008 rc = fid_from_lma(NULL, fd, fid);
5013 int llapi_path2fid(const char *path, struct lu_fid *fid)
5017 memset(fid, 0, sizeof(*fid));
5018 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5020 if (errno == ELOOP || errno == ENXIO)
5021 return fid_from_lma(path, -1, fid);
5025 rc = llapi_fd2fid(fd, fid);
5026 if (rc == -EINVAL || rc == -ENOTTY)
5027 rc = fid_from_lma(path, -1, fid);
5033 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5034 char *name, size_t name_size)
5036 struct getparent *gp;
5039 gp = malloc(sizeof(*gp) + name_size);
5043 gp->gp_linkno = linkno;
5044 gp->gp_name_size = name_size;
5046 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5052 *parent_fid = gp->gp_fid;
5054 strncpy(name, gp->gp_name, name_size);
5055 name[name_size - 1] = '\0';
5062 int llapi_path2parent(const char *path, unsigned int linkno,
5063 struct lu_fid *parent_fid, char *name, size_t name_size)
5068 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5072 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5077 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5082 root = open(mnt, O_RDONLY | O_DIRECTORY);
5085 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5089 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5092 llapi_error(LLAPI_MSG_ERROR, rc,
5093 "ioctl on %s for getting connect flags failed", mnt);
5100 * Get a 64-bit value representing the version of file data pointed by fd.
5102 * Each write or truncate, flushed on OST, will change this value. You can use
5103 * this value to verify if file data was modified. This only checks the file
5104 * data, not metadata.
5106 * \param flags 0: no flush pages, usually used it the process has already
5108 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5110 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5111 * pages from clients.
5113 * \retval 0 on success.
5114 * \retval -errno on error.
5116 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5119 struct ioc_data_version idv;
5121 idv.idv_flags = (__u32)flags;
5123 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5127 *data_version = idv.idv_version;
5133 * Flush cached pages from all clients.
5135 * \param fd File descriptor
5139 int llapi_file_flush(int fd)
5143 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5147 * Fetch layout version from OST objects. Layout version on OST objects are
5148 * only set when the file is a mirrored file AND after the file has been
5149 * written at least once.
5151 * It actually fetches the least layout version from the objects.
5153 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5156 struct ioc_data_version idv = { 0 };
5158 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5162 *layout_version = idv.idv_layout_version;
5168 * Create a file without any name open it for read/write
5170 * - file is created as if it were a standard file in the given \a directory
5171 * - file does not appear in \a directory and mtime does not change because
5172 * the filename is handled specially by the Lustre MDS.
5173 * - file is removed at final close
5174 * - file modes are rw------- since it doesn't make sense to have a read-only
5175 * or write-only file that cannot be opened again.
5176 * - if user wants another mode it must use fchmod() on the open file, no
5177 * security problems arise because it cannot be opened by another process.
5179 * \param[in] directory directory from which to inherit layout/MDT idx
5180 * \param[in] idx MDT index on which the file is created,
5181 * \a idx == -1 means no specific MDT is requested
5182 * \param[in] open_flags standard open(2) flags
5184 * \retval 0 on success.
5185 * \retval -errno on error.
5187 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5189 char file_path[PATH_MAX];
5190 char filename[PATH_MAX];
5191 int saved_errno = errno;
5199 snprintf(filename, sizeof(filename),
5200 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5202 snprintf(filename, sizeof(filename),
5203 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5205 rc = snprintf(file_path, sizeof(file_path),
5206 "%s/%s", directory, filename);
5207 if (rc >= sizeof(file_path))
5210 fd = open(file_path,
5211 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5213 } while (fd < 0 && errno == EEXIST);
5216 llapi_error(LLAPI_MSG_ERROR, errno,
5217 "Cannot create volatile file '%s' in '%s'",
5218 filename + LUSTRE_VOLATILE_HDR_LEN,
5223 /* Unlink file in case this wasn't a Lustre filesystem and the
5224 * magic volatile filename wasn't handled as intended. The
5225 * effect is the same. If volatile open was supported then we
5226 * expect unlink() to return -ENOENT. */
5227 (void)unlink(file_path);
5229 /* Since we are returning successfully we restore errno (and
5230 * mask out possible EEXIST from open() and ENOENT from
5232 errno = saved_errno;
5238 * Swap the layouts between 2 file descriptors
5239 * the 2 files must be open for writing
5240 * first fd received the ioctl, second fd is passed as arg
5241 * this is assymetric but avoid use of root path for ioctl
5243 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5244 int gid, __u64 flags)
5246 struct lustre_swap_layouts lsl;
5251 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5252 rc = fstat(fd1, &st1);
5256 rc = fstat(fd2, &st2);
5261 lsl.sl_flags = flags;
5265 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5269 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5270 struct timeval tv1[2];
5271 struct timeval tv2[2];
5273 memset(tv1, 0, sizeof(tv1));
5274 memset(tv2, 0, sizeof(tv2));
5276 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5277 tv1[0].tv_sec = st1.st_atime;
5278 tv2[0].tv_sec = st2.st_atime;
5280 tv1[0].tv_sec = st2.st_atime;
5281 tv2[0].tv_sec = st1.st_atime;
5284 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5285 tv1[1].tv_sec = st1.st_mtime;
5286 tv2[1].tv_sec = st2.st_mtime;
5288 tv1[1].tv_sec = st2.st_mtime;
5289 tv2[1].tv_sec = st1.st_mtime;
5292 rc = futimes(fd1, tv1);
5296 rc = futimes(fd2, tv2);
5304 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5311 while (grp_id == 0);
5313 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5321 * Swap the layouts between 2 files
5322 * the 2 files are open in write
5324 int llapi_swap_layouts(const char *path1, const char *path2,
5325 __u64 dv1, __u64 dv2, __u64 flags)
5329 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5332 llapi_error(LLAPI_MSG_ERROR, rc,
5333 "error: cannot open '%s' for write", path1);
5337 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5340 llapi_error(LLAPI_MSG_ERROR, rc,
5341 "error: cannot open '%s' for write", path2);
5345 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5347 llapi_error(LLAPI_MSG_ERROR, rc,
5348 "error: cannot swap layout between '%s' and '%s'",
5359 * Attempt to open a file with Lustre file identifier \a fid
5360 * and return an open file descriptor.
5362 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5363 * \param[in] fid Lustre file identifier of file to open
5364 * \param[in] flags open() flags
5366 * \retval non-negative file descriptor on successful open
5367 * \retval -1 if an error occurred
5369 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5372 char mntdir[PATH_MAX];
5373 char path[PATH_MAX];
5376 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5380 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5381 return open(path, flags);
5387 * \param fd File to lock.
5388 * \param gid Group Identifier.
5390 * \retval 0 on success.
5391 * \retval -errno on failure.
5393 int llapi_group_lock(int fd, int gid)
5397 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5400 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5408 * \param fd File to unlock.
5409 * \param gid Group Identifier.
5411 * \retval 0 on success.
5412 * \retval -errno on failure.
5414 int llapi_group_unlock(int fd, int gid)
5418 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5421 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");