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);
1646 if (lum_size < PATH_MAX + 1)
1647 lum_size = PATH_MAX + 1;
1649 param->fp_lum_size = lum_size;
1650 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1651 if (param->fp_lmd == NULL) {
1652 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1653 "error: allocation of %zu bytes for ioctl",
1654 sizeof(lstat_t) + param->fp_lum_size);
1658 param->fp_lmv_stripe_count = 256;
1659 param->fp_lmv_md = calloc(1,
1660 lmv_user_md_size(param->fp_lmv_stripe_count,
1662 if (param->fp_lmv_md == NULL) {
1663 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1664 "error: allocation of %d bytes for ioctl",
1665 lmv_user_md_size(param->fp_lmv_stripe_count,
1670 param->fp_got_uuids = 0;
1671 param->fp_obd_indexes = NULL;
1672 param->fp_obd_index = OBD_NOT_FOUND;
1673 if (!param->fp_migrate)
1674 param->fp_mdt_index = OBD_NOT_FOUND;
1678 static void find_param_fini(struct find_param *param)
1680 if (param->fp_obd_indexes)
1681 free(param->fp_obd_indexes);
1684 free(param->fp_lmd);
1686 if (param->fp_lmv_md)
1687 free(param->fp_lmv_md);
1690 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1691 struct dirent64 *de)
1693 struct find_param *param = data;
1699 /* set errno upon failure */
1700 static DIR *opendir_parent(const char *path)
1706 path_copy = strdup(path);
1707 if (path_copy == NULL)
1710 parent_path = dirname(path_copy);
1711 parent = opendir(parent_path);
1717 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1722 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1723 if (param->fp_get_default_lmv)
1724 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1726 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1728 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1729 if (errno == E2BIG && ret != 0) {
1733 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1734 if (stripe_count <= param->fp_lmv_stripe_count)
1737 free(param->fp_lmv_md);
1738 param->fp_lmv_stripe_count = stripe_count;
1739 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1740 param->fp_lmv_md = malloc(lmv_size);
1741 if (param->fp_lmv_md == NULL) {
1742 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1743 "error: allocation of %d bytes for ioctl",
1744 lmv_user_md_size(param->fp_lmv_stripe_count,
1753 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1754 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1756 struct lov_user_mds_data *lmd = lmdbuf;
1757 lstat_t *st = &lmd->lmd_st;
1760 if (parent_fd < 0 && dir_fd < 0)
1762 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1766 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1767 * and returns struct lov_user_mds_data, while
1768 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1770 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1771 LL_IOC_LOV_GETSTRIPE,
1773 } else if (parent_fd >= 0) {
1774 char *fname = strrchr(path, '/');
1776 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1777 * the parent directory) and returns struct lov_user_mds_data,
1778 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1780 * This avoids opening, locking, and closing each file on the
1781 * client if that is not needed. Multiple of these ioctl() can
1782 * be done on the parent dir with a single open for all
1783 * files in that directory, and it also doesn't pollute the
1784 * client dcache with millions of dentries when traversing
1785 * a large filesystem.
1787 fname = (fname == NULL ? path : fname + 1);
1789 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1792 else if (ret >= lmdlen || ret++ == 0)
1795 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1796 IOC_MDC_GETFILEINFO :
1797 IOC_MDC_GETFILESTRIPE, lmdbuf);
1800 if (ret && type == GET_LMD_INFO) {
1801 if (errno == ENOTTY) {
1802 /* ioctl is not supported, it is not a lustre fs.
1803 * Do the regular lstat(2) instead.
1805 ret = lstat_f(path, st);
1808 llapi_error(LLAPI_MSG_ERROR, ret,
1809 "error: %s: lstat failed for %s",
1812 } else if (errno == ENOENT) {
1814 llapi_error(LLAPI_MSG_WARN, ret,
1815 "warning: %s does not exist", path);
1816 } else if (errno != EISDIR && errno != ENODATA) {
1818 llapi_error(LLAPI_MSG_ERROR, ret,
1819 "%s ioctl failed for %s.",
1820 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1821 "IOC_MDC_GETFILEINFO", path);
1828 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1829 int lmdlen, enum get_lmd_info_type type)
1835 parent_fd = dirfd(parent);
1837 dir_fd = dirfd(dir);
1839 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1842 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1843 semantic_func_t sem_init,
1844 semantic_func_t sem_fini, void *data,
1845 struct dirent64 *de)
1847 struct find_param *param = (struct find_param *)data;
1848 struct dirent64 *dent;
1856 if (!d && errno != ENOTDIR) {
1858 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1861 } else if (!d && !parent) {
1862 /* ENOTDIR. Open the parent dir. */
1863 p = opendir_parent(path);
1870 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1876 while ((dent = readdir64(d)) != NULL) {
1879 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1883 if ((len + dent->d_reclen + 2) > size) {
1884 llapi_err_noerrno(LLAPI_MSG_ERROR,
1885 "error: %s: string buffer too small",
1890 strcat(path, dent->d_name);
1892 if (dent->d_type == DT_UNKNOWN) {
1893 lstat_t *st = ¶m->fp_lmd->lmd_st;
1895 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1896 param->fp_lum_size, GET_LMD_INFO);
1898 dent->d_type = IFTODT(st->st_mode);
1905 switch (dent->d_type) {
1907 llapi_err_noerrno(LLAPI_MSG_ERROR,
1908 "error: %s: '%s' is UNKNOWN type %d",
1909 __func__, dent->d_name, dent->d_type);
1912 rc = llapi_semantic_traverse(path, size, d, sem_init,
1913 sem_fini, data, dent);
1914 if (rc != 0 && ret == 0)
1920 rc = sem_init(path, d, NULL, data, dent);
1921 if (rc < 0 && ret == 0)
1924 if (sem_fini && rc == 0)
1925 sem_fini(path, d, NULL, data, dent);
1933 sem_fini(path, parent, &d, data, de);
1942 static int param_callback(char *path, semantic_func_t sem_init,
1943 semantic_func_t sem_fini, struct find_param *param)
1945 int ret, len = strlen(path);
1948 if (len > PATH_MAX) {
1950 llapi_error(LLAPI_MSG_ERROR, ret,
1951 "Path name '%s' is too long", path);
1955 buf = (char *)malloc(PATH_MAX + 1);
1959 snprintf(buf, PATH_MAX + 1, "%s", path);
1960 ret = common_param_init(param, buf);
1964 param->fp_depth = 0;
1966 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1967 sem_fini, param, NULL);
1969 find_param_fini(param);
1971 return ret < 0 ? ret : 0;
1974 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1976 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1980 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
1985 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1987 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1990 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1995 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1999 fd = open(path, O_RDONLY | O_NONBLOCK);
2002 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2006 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2012 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2016 fd = open(path, O_RDONLY | O_NONBLOCK);
2019 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2023 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2035 * If uuidp is NULL, return the number of available obd uuids.
2036 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2037 * there are more OSTs than allocated to uuidp, then an error is returned with
2038 * the ost_count set to number of available obd uuids.
2040 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2041 int *ost_count, enum tgt_type type)
2043 char buf[PATH_MAX], format[32];
2044 int rc = 0, index = 0;
2045 struct obd_uuid name;
2049 /* Get the lov name */
2050 if (type == LOV_TYPE)
2051 rc = llapi_file_fget_lov_uuid(fd, &name);
2053 rc = llapi_file_fget_lmv_uuid(fd, &name);
2057 /* Now get the ost uuids */
2058 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2059 FILTER_BY_EXACT, "target_obd", ¶m);
2063 fp = fopen(param.gl_pathv[0], "r");
2066 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2071 snprintf(format, sizeof(format),
2072 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2073 while (fgets(buf, sizeof(buf), fp) != NULL) {
2074 if (uuidp && (index < *ost_count)) {
2075 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2083 if (uuidp && (index > *ost_count))
2088 cfs_free_param_data(¶m);
2092 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2094 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2097 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2102 root = open(mnt, O_RDONLY | O_DIRECTORY);
2105 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2110 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2118 /* Check if user specified value matches a real uuid. Ignore _UUID,
2119 * -osc-4ba41334, other trailing gunk in comparison.
2120 * @param real_uuid ends in "_UUID"
2121 * @param search_uuid may or may not end in "_UUID"
2123 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2125 int cmplen = strlen(real_uuid);
2126 int searchlen = strlen(search_uuid);
2128 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2130 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2133 /* The UUIDs may legitimately be different lengths, if
2134 * the system was upgraded from an older version. */
2135 if (cmplen != searchlen)
2138 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2141 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2142 * returned in param->fp_obd_index */
2143 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2145 struct obd_uuid obd_uuid;
2152 if (param->fp_got_uuids)
2155 /* Get the lov/lmv name */
2156 if (param->fp_get_lmv)
2157 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2159 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2161 if (rc != -ENOTTY) {
2162 llapi_error(LLAPI_MSG_ERROR, rc,
2163 "error: can't get %s name: %s",
2164 param->fp_get_lmv ? "lmv" : "lov",
2172 param->fp_got_uuids = 1;
2174 /* Now get the ost uuids */
2175 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2176 obd_uuid.uuid, FILTER_BY_EXACT,
2177 "target_obd", ¶m_data);
2181 fp = fopen(param_data.gl_pathv[0], "r");
2184 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2185 param_data.gl_pathv[0]);
2189 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2190 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2191 param->fp_get_lmv ? "MDTS" : "OBDS");
2193 snprintf(format, sizeof(format),
2194 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2195 while (fgets(buf, sizeof(buf), fp) != NULL) {
2198 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2201 if (param->fp_obd_uuid) {
2202 if (llapi_uuid_match(obd_uuid.uuid,
2203 param->fp_obd_uuid->uuid)) {
2204 param->fp_obd_index = index;
2207 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2208 /* Print everything */
2209 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2212 param->fp_obds_printed = 1;
2216 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2217 llapi_err_noerrno(LLAPI_MSG_ERROR,
2218 "error: %s: unknown obduuid: %s",
2219 __func__, param->fp_obd_uuid->uuid);
2223 cfs_free_param_data(¶m_data);
2227 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2228 * obd index for all these obduuids will be returned in
2229 * param->fp_obd_indexes */
2230 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2231 int num_obds, int **obdindexes, int *obdindex,
2234 int ret, obdcount, obd_valid = 0, obdnum;
2236 struct obd_uuid *uuids = NULL;
2240 if (type == LOV_TYPE)
2241 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2243 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2247 obdcount = atoi(buf);
2248 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2253 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2255 if (ret == -EOVERFLOW) {
2256 struct obd_uuid *uuids_temp;
2258 uuids_temp = realloc(uuids, obdcount *
2259 sizeof(struct obd_uuid));
2260 if (uuids_temp != NULL) {
2262 goto retry_get_uuids;
2267 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2271 indexes = malloc(num_obds * sizeof(*obdindex));
2272 if (indexes == NULL) {
2277 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2280 /* The user may have specified a simple index */
2281 i = strtol(obduuids[obdnum].uuid, &end, 0);
2282 if (end && *end == '\0' && i < obdcount) {
2283 indexes[obdnum] = i;
2286 for (i = 0; i < obdcount; i++) {
2287 if (llapi_uuid_match(uuids[i].uuid,
2288 obduuids[obdnum].uuid)) {
2289 indexes[obdnum] = i;
2295 if (i >= obdcount) {
2296 indexes[obdnum] = OBD_NOT_FOUND;
2297 llapi_err_noerrno(LLAPI_MSG_ERROR,
2298 "invalid obduuid '%s'",
2299 obduuids[obdnum].uuid);
2305 *obdindex = OBD_NOT_FOUND;
2307 *obdindex = obd_valid;
2309 *obdindexes = indexes;
2317 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2321 if (param->fp_mdt_uuid) {
2322 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2324 ¶m->fp_mdt_indexes,
2325 ¶m->fp_mdt_index, LMV_TYPE);
2330 if (param->fp_obd_uuid) {
2331 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2333 ¶m->fp_obd_indexes,
2334 ¶m->fp_obd_index, LOV_TYPE);
2339 param->fp_got_uuids = 1;
2344 int llapi_ostlist(char *path, struct find_param *param)
2349 fd = open(path, O_RDONLY | O_DIRECTORY);
2353 ret = setup_obd_uuid(fd, path, param);
2360 * Tries to determine the default stripe attributes for a given filesystem. The
2361 * filesystem to check should be specified by fsname, or will be determined
2364 static int sattr_get_defaults(const char *const fsname,
2365 unsigned int *scount,
2366 unsigned int *ssize,
2367 unsigned int *soffset)
2373 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2374 "stripecount", val, sizeof(val));
2377 *scount = atoi(val);
2381 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2382 "stripesize", val, sizeof(val));
2389 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2390 "stripeoffset", val, sizeof(val));
2393 *soffset = atoi(val);
2400 * Tries to gather the default stripe attributes for a given filesystem. If
2401 * the attributes can be determined, they are cached for easy retreival the
2402 * next time they are needed. Only a single filesystem's attributes are
2405 int sattr_cache_get_defaults(const char *const fsname,
2406 const char *const pathname, unsigned int *scount,
2407 unsigned int *ssize, unsigned int *soffset)
2410 char fsname[PATH_MAX + 1];
2411 unsigned int stripecount;
2412 unsigned int stripesize;
2413 unsigned int stripeoffset;
2419 char fsname_buf[PATH_MAX + 1];
2420 unsigned int tmp[3];
2422 if (fsname == NULL) {
2423 rc = llapi_search_fsname(pathname, fsname_buf);
2427 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2430 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2432 * Ensure all 3 sattrs (count, size, and offset) are
2433 * successfully retrieved and stored in tmp before writing to
2436 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2440 cache.stripecount = tmp[0];
2441 cache.stripesize = tmp[1];
2442 cache.stripeoffset = tmp[2];
2443 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2447 *scount = cache.stripecount;
2449 *ssize = cache.stripesize;
2451 *soffset = cache.stripeoffset;
2456 static char *layout2name(__u32 layout_pattern)
2458 if (layout_pattern == LOV_PATTERN_MDT)
2460 else if (layout_pattern == LOV_PATTERN_RAID0)
2462 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2468 enum lov_dump_flags {
2469 LDF_IS_DIR = 0x0001,
2470 LDF_IS_RAW = 0x0002,
2471 LDF_INDENT = 0x0004,
2472 LDF_SKIP_OBJS = 0x0008,
2476 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2477 struct lov_user_ost_data_v1 *objects,
2478 int verbose, int depth, char *pool_name,
2479 enum lov_dump_flags flags)
2481 bool is_dir = flags & LDF_IS_DIR;
2482 bool is_raw = flags & LDF_IS_RAW;
2483 bool indent = flags & LDF_INDENT;
2484 bool yaml = flags & LDF_YAML;
2485 bool skip_objs = flags & LDF_SKIP_OBJS;
2486 char *prefix = is_dir ? "" : "lmm_";
2487 char *separator = "";
2488 char *space = indent ? " " : "";
2491 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2492 lmm_oi_set_seq(&lum->lmm_oi, 0);
2493 if (!indent && (verbose & VERBOSE_DETAIL))
2494 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2497 if (!yaml && !indent && depth && path &&
2498 ((verbose != VERBOSE_OBJID) || !is_dir))
2499 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2501 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2502 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2503 space, prefix, lum->lmm_magic);
2504 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2506 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2507 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2509 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2511 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2516 if (verbose & ~VERBOSE_DFID)
2517 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2519 /* This needs a bit of hand-holding since old 1.x lmm_oi
2520 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2521 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2522 * a real FID. Ideally the 2.x code would have stored this
2523 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2524 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2525 * worked properly (especially since IGIF FIDs use mds_inum as
2526 * the FID SEQ), but unfortunately that didn't happen.
2528 * Print it to look like an IGIF FID, even though the fields
2529 * are reversed on disk, so that it makes sense to userspace.
2531 * Don't use ostid_id() and ostid_seq(), since they assume the
2532 * oi_fid fields are in the right order. This is why there are
2533 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2535 * For newer layout types hopefully this will be a real FID. */
2536 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2537 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2538 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2539 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2540 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2542 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2545 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2549 if (verbose & VERBOSE_COUNT) {
2550 if (verbose & ~VERBOSE_COUNT)
2551 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2554 if (!is_raw && lum->lmm_stripe_count == 0 &&
2555 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2556 unsigned int scount;
2557 rc = sattr_cache_get_defaults(NULL, path,
2561 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2564 llapi_error(LLAPI_MSG_ERROR, rc,
2565 "Cannot determine default"
2568 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2569 lum->lmm_stripe_count ==
2570 (typeof(lum->lmm_stripe_count))(-1)
2571 ? -1 : lum->lmm_stripe_count);
2574 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2575 (__s16)lum->lmm_stripe_count);
2577 if (!yaml && is_dir)
2583 if (verbose & VERBOSE_SIZE) {
2584 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2585 if (verbose & ~VERBOSE_SIZE)
2586 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2588 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2590 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2593 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2595 llapi_error(LLAPI_MSG_ERROR, rc,
2596 "Cannot determine default"
2599 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2600 lum->lmm_stripe_size);
2602 if (!yaml && is_dir)
2608 if ((verbose & VERBOSE_LAYOUT)) {
2609 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2610 if (verbose & ~VERBOSE_LAYOUT)
2611 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2613 if (lov_pattern_supported(lum->lmm_pattern))
2614 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2615 layout2name(lum->lmm_pattern));
2617 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2618 separator = (!yaml && is_dir) ? " " : "\n";
2621 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2622 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2623 if (verbose & ~VERBOSE_GENERATION)
2624 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2626 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2627 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2631 if (verbose & VERBOSE_OFFSET) {
2632 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2633 if (verbose & ~VERBOSE_OFFSET)
2634 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2636 if (is_dir || skip_objs)
2637 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2638 lum->lmm_stripe_offset ==
2639 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2640 lum->lmm_stripe_offset);
2641 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2642 llapi_printf(LLAPI_MSG_NORMAL, "0");
2644 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2645 objects[0].l_ost_idx);
2646 if (!yaml && is_dir)
2652 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2653 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2654 if (verbose & ~VERBOSE_POOL)
2655 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2657 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2658 if (!yaml && is_dir)
2664 if (strlen(separator) != 0)
2665 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2668 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2669 struct lov_user_ost_data_v1 *objects,
2670 char *path, int obdindex, int depth,
2671 int header, enum lov_dump_flags flags)
2673 bool is_dir = flags & LDF_IS_DIR;
2674 bool indent = flags & LDF_INDENT;
2675 bool skip_objs = flags & LDF_SKIP_OBJS;
2676 bool yaml = flags & LDF_YAML;
2677 bool obdstripe = obdindex == OBD_NOT_FOUND;
2680 if (!obdstripe && !skip_objs) {
2681 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2682 if (obdindex == objects[i].l_ost_idx) {
2692 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2695 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2696 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2697 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2698 char *space = " - ";
2701 llapi_printf(LLAPI_MSG_NORMAL,
2702 "%6slmm_objects:\n", " ");
2704 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2706 llapi_printf(LLAPI_MSG_NORMAL,
2707 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2709 for (i = 0; i < lum->lmm_stripe_count; i++) {
2710 int idx = objects[i].l_ost_idx;
2711 long long oid = ostid_id(&objects[i].l_ost_oi);
2712 long long gr = ostid_seq(&objects[i].l_ost_oi);
2714 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2718 struct lu_fid fid = { 0 };
2720 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2721 llapi_printf(LLAPI_MSG_NORMAL,
2722 "%sl_ost_idx: %d\n", space, idx);
2723 llapi_printf(LLAPI_MSG_NORMAL,
2724 "%8sl_fid: "DFID_NOBRACE"\n",
2726 } else if (indent) {
2727 struct lu_fid fid = { 0 };
2729 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2730 llapi_printf(LLAPI_MSG_NORMAL,
2731 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2732 space, i, idx, PFID(&fid));
2735 sprintf(fmt, "%s%s%s\n",
2736 "\t%6u\t%14llu\t%#13llx\t",
2737 (fid_seq_is_rsvd(gr) ||
2738 fid_seq_is_mdt0(gr)) ?
2739 "%14llu" : "%#14llx", "%s");
2740 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2742 obdindex == idx ? " *" : "");
2746 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2749 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2750 char *path, int obdindex, int depth, int verbose,
2751 enum lov_dump_flags flags)
2753 struct lmv_user_mds_data *objects = lum->lum_objects;
2754 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2755 char *separator = "";
2756 bool yaml = flags & LDF_YAML;
2757 bool obdstripe = false;
2760 if (obdindex != OBD_NOT_FOUND) {
2761 if (lum->lum_stripe_count == 0) {
2762 if (obdindex == lum->lum_stripe_offset)
2765 for (i = 0; i < lum->lum_stripe_count; i++) {
2766 if (obdindex == objects[i].lum_mds) {
2767 llapi_printf(LLAPI_MSG_NORMAL,
2782 /* show all information default */
2784 if (lum->lum_magic == LMV_USER_MAGIC)
2785 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2786 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2788 verbose = VERBOSE_OBJID;
2791 if (depth && path && ((verbose != VERBOSE_OBJID)))
2792 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2794 if (verbose & VERBOSE_COUNT) {
2795 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2796 if (verbose & ~VERBOSE_COUNT)
2797 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2798 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2799 (int)lum->lum_stripe_count);
2800 if ((verbose & VERBOSE_OFFSET) && !yaml)
2806 if (verbose & VERBOSE_OFFSET) {
2807 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2808 if (verbose & ~VERBOSE_OFFSET)
2809 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2810 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2811 (int)lum->lum_stripe_offset);
2812 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2818 if (verbose & VERBOSE_HASH_TYPE) {
2819 unsigned int type = lum->lum_hash_type;
2821 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2822 if (verbose & ~VERBOSE_HASH_TYPE)
2823 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2824 if (type < LMV_HASH_TYPE_MAX)
2825 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2826 mdt_hash_name[type]);
2828 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2833 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2834 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2835 if (lum->lum_stripe_count > 0)
2836 llapi_printf(LLAPI_MSG_NORMAL,
2837 "mdtidx\t\t FID[seq:oid:ver]\n");
2838 for (i = 0; i < lum->lum_stripe_count; i++) {
2839 int idx = objects[i].lum_mds;
2840 struct lu_fid *fid = &objects[i].lum_fid;
2841 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2842 llapi_printf(LLAPI_MSG_NORMAL,
2843 "%6u\t\t "DFID"\t\t%s\n",
2845 obdindex == idx ? " *" : "");
2850 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2851 pool_name[0] != '\0') {
2852 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2853 if (verbose & ~VERBOSE_POOL)
2854 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2856 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2860 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2861 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2864 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2865 enum lov_dump_flags flags)
2867 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2868 int depth = param->fp_max_depth;
2869 int verbose = param->fp_verbose;
2870 bool yaml = flags & LDF_YAML;
2872 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2873 !(flags & LDF_IS_DIR)) && !yaml)
2874 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2876 if (verbose & VERBOSE_DETAIL) {
2877 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2878 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2879 " ", comp_v1->lcm_magic);
2880 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2881 " ", comp_v1->lcm_size);
2882 if (flags & LDF_IS_DIR)
2883 llapi_printf(LLAPI_MSG_NORMAL,
2884 "%2slcm_flags: %s\n", " ",
2885 comp_v1->lcm_mirror_count > 0 ?
2888 llapi_printf(LLAPI_MSG_NORMAL,
2889 "%2slcm_flags: %s\n", " ",
2890 llapi_layout_flags_string(comp_v1->lcm_flags));
2893 if (verbose & VERBOSE_GENERATION) {
2894 if (verbose & ~VERBOSE_GENERATION)
2895 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2897 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2900 if (verbose & VERBOSE_MIRROR_COUNT) {
2901 if (verbose & ~VERBOSE_MIRROR_COUNT)
2902 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2904 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2905 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2906 comp_v1->lcm_mirror_count + 1 : 1);
2909 if (verbose & VERBOSE_COMP_COUNT) {
2910 if (verbose & ~VERBOSE_COMP_COUNT)
2911 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2913 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2914 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2915 comp_v1->lcm_entry_count : 0);
2918 if (verbose & VERBOSE_DETAIL && !yaml)
2919 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2922 static void lcme_flags2str(__u32 comp_flags)
2928 llapi_printf(LLAPI_MSG_NORMAL, "0");
2931 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2932 if (comp_flags & comp_flags_table[i].cfn_flag) {
2934 llapi_printf(LLAPI_MSG_NORMAL, ",");
2935 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2936 comp_flags_table[i].cfn_name);
2937 comp_flags &= ~comp_flags_table[i].cfn_flag;
2943 llapi_printf(LLAPI_MSG_NORMAL, ",");
2944 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2948 static void lov_dump_comp_v1_entry(struct find_param *param,
2949 enum lov_dump_flags flags, int index)
2951 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2952 struct lov_comp_md_entry_v1 *entry;
2953 char *separator = "";
2954 int verbose = param->fp_verbose;
2955 bool yaml = flags & LDF_YAML;
2957 entry = &comp_v1->lcm_entries[index];
2960 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2962 if (verbose & VERBOSE_COMP_ID) {
2963 if (verbose & VERBOSE_DETAIL && !yaml)
2964 llapi_printf(LLAPI_MSG_NORMAL,
2965 "%slcme_id: ", " - ");
2966 else if (verbose & ~VERBOSE_COMP_ID)
2967 llapi_printf(LLAPI_MSG_NORMAL,
2968 "%4slcme_id: ", " ");
2969 if (entry->lcme_id != LCME_ID_INVAL)
2970 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2972 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2976 if (verbose & VERBOSE_MIRROR_ID) {
2977 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2978 if (verbose & ~VERBOSE_MIRROR_ID)
2979 llapi_printf(LLAPI_MSG_NORMAL,
2980 "%4slcme_mirror_id: ", " ");
2981 if (entry->lcme_id != LCME_ID_INVAL)
2982 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2983 mirror_id_of(entry->lcme_id));
2985 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2989 if (verbose & VERBOSE_COMP_FLAGS) {
2990 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2991 if (verbose & ~VERBOSE_COMP_FLAGS)
2992 llapi_printf(LLAPI_MSG_NORMAL,
2993 "%4slcme_flags: ", " ");
2994 lcme_flags2str(entry->lcme_flags);
2998 if (verbose & VERBOSE_COMP_START) {
2999 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3000 if (verbose & ~VERBOSE_COMP_START)
3001 llapi_printf(LLAPI_MSG_NORMAL,
3002 "%4slcme_extent.e_start: ", " ");
3003 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3004 entry->lcme_extent.e_start);
3008 if (verbose & VERBOSE_COMP_END) {
3009 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3010 if (verbose & ~VERBOSE_COMP_END)
3011 llapi_printf(LLAPI_MSG_NORMAL,
3012 "%4slcme_extent.e_end: ", " ");
3013 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3014 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3016 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3017 entry->lcme_extent.e_end);
3022 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3023 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3024 } else if (verbose & VERBOSE_DETAIL) {
3025 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3026 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3027 " ", entry->lcme_offset);
3028 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3029 " ", entry->lcme_size);
3030 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3032 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3036 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3037 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3039 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3040 * The table below gives the answers for the specified parameters (value and
3041 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3042 * --------------------------------------
3043 * 1 | file > limit; sign > 0 | -1 / -1 |
3044 * 2 | file = limit; sign > 0 | -1 / -1 |
3045 * 3 | file < limit; sign > 0 | ? / 1 |
3046 * 4 | file > limit; sign = 0 | -1 / -1 |
3047 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3048 * 6 | file < limit; sign = 0 | ? / -1 |
3049 * 7 | file > limit; sign < 0 | 1 / 1 |
3050 * 8 | file = limit; sign < 0 | ? / -1 |
3051 * 9 | file < limit; sign < 0 | ? / -1 |
3052 * --------------------------------------
3053 * Note: 5th actually means that the value is within the interval
3054 * (limit - margin, limit]. */
3055 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3056 int sign, int negopt, unsigned long long margin,
3062 /* Drop the fraction of margin (of days). */
3063 if (file + margin <= limit)
3065 } else if (sign == 0) {
3066 if (file <= limit && file + margin > limit)
3068 else if (file + margin <= limit)
3070 } else if (sign < 0) {
3077 return negopt ? ~ret + 1 : ret;
3080 static inline struct lov_user_md *
3081 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3083 return (struct lov_user_md *)((char *)comp_v1 +
3084 comp_v1->lcm_entries[ent_idx].lcme_offset);
3087 static inline struct lov_user_ost_data_v1 *
3088 lov_v1v3_objects(struct lov_user_md *v1)
3090 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3091 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3093 return v1->lmm_objects;
3097 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3099 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3100 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3101 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3103 pool_name[0] = '\0';
3107 print_last_init_comp(struct find_param *param)
3109 /* print all component info */
3110 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3113 /* print specific component info */
3114 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3115 param->fp_check_comp_start || param->fp_check_comp_end)
3121 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3125 if (param->fp_comp_end == LUSTRE_EOF) {
3126 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3127 match = end == LUSTRE_EOF ? 1 : -1;
3128 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3129 match = end == LUSTRE_EOF ? -1 : 1;
3130 else /* at least EOF */
3132 if (param->fp_exclude_comp_end)
3135 unsigned long long margin;
3137 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3138 match = find_value_cmp(end, param->fp_comp_end,
3139 param->fp_comp_end_sign,
3140 param->fp_exclude_comp_end, margin, 0);
3147 * An example of "getstripe -v" for a two components PFL file:
3150 * lcm_magic: 0x0BD60BD0
3154 * lcm_entry_count: 2
3158 * lcme_extent.e_start: 0
3159 * lcme_extent.e_end: 1048576
3163 * lmm_magic: 0x0BD10BD0
3164 * lmm_seq: 0x200000401
3165 * lmm_object_id: 0x1
3166 * lmm_fid: [0x200000401:0x1:0x0]
3167 * lmm_stripe_count: 1
3168 * lmm_stripe_size: 1048576
3169 * lmm_pattern: raid0
3171 * lmm_stripe_offset: 0
3173 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3177 * lcme_extent.e_start: 1048576
3178 * lcme_extent.e_end: EOF
3182 * lmm_magic: 0x0BD10BD0
3183 * lmm_seq: 0x200000401
3184 * lmm_object_id: 0x1
3185 * lmm_fid: [0x200000401:0x1:0x0]
3186 * lmm_stripe_count: 2
3187 * lmm_stripe_size: 1048576
3188 * lmm_pattern: raid0
3190 * lmm_stripe_offset: 1
3192 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3193 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3195 static void lov_dump_comp_v1(struct find_param *param, char *path,
3196 enum lov_dump_flags flags)
3198 struct lov_comp_md_entry_v1 *entry;
3199 struct lov_user_ost_data_v1 *objects;
3200 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3201 struct lov_user_md_v1 *v1;
3202 char pool_name[LOV_MAXPOOLNAME + 1];
3203 int obdindex = param->fp_obd_index;
3205 bool obdstripe = false;
3207 if (obdindex != OBD_NOT_FOUND) {
3208 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3209 i < comp_v1->lcm_entry_count; i++) {
3210 if (!(comp_v1->lcm_entries[i].lcme_flags &
3214 v1 = lov_comp_entry(comp_v1, i);
3215 objects = lov_v1v3_objects(v1);
3217 for (j = 0; j < v1->lmm_stripe_count; j++) {
3218 if (obdindex == objects[j].l_ost_idx) {
3231 lov_dump_comp_v1_header(param, path, flags);
3233 flags |= LDF_INDENT;
3235 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3236 entry = &comp_v1->lcm_entries[i];
3238 if (param->fp_check_comp_flags) {
3239 if (((param->fp_comp_flags & entry->lcme_flags) !=
3240 param->fp_comp_flags) ||
3241 (param->fp_comp_neg_flags & entry->lcme_flags))
3245 if (param->fp_check_comp_id &&
3246 param->fp_comp_id != entry->lcme_id)
3249 if (param->fp_check_comp_start) {
3250 match = find_value_cmp(entry->lcme_extent.e_start,
3251 param->fp_comp_start,
3252 param->fp_comp_start_sign,
3254 param->fp_comp_start_units, 0);
3259 if (param->fp_check_comp_end) {
3260 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3266 if (print_last_init_comp(param)) {
3268 * if part of stripe info is needed, we'd print only
3269 * the last instantiated component info.
3271 if (entry->lcme_flags & LCME_FL_INIT)
3277 if (entry->lcme_flags & LCME_FL_INIT) {
3278 if (obdindex != OBD_NOT_FOUND) {
3279 flags |= LDF_SKIP_OBJS;
3280 v1 = lov_comp_entry(comp_v1, i);
3281 objects = lov_v1v3_objects(v1);
3283 for (j = 0; j < v1->lmm_stripe_count; j++) {
3284 if (obdindex == objects[j].l_ost_idx) {
3285 flags &= ~LDF_SKIP_OBJS;
3290 flags &= ~LDF_SKIP_OBJS;
3293 flags |= LDF_SKIP_OBJS;
3296 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3298 lov_dump_comp_v1_entry(param, flags, i);
3300 v1 = lov_comp_entry(comp_v1, i);
3301 objects = lov_v1v3_objects(v1);
3302 lov_v1v3_pool_name(v1, pool_name);
3304 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3305 param->fp_max_depth, param->fp_verbose,
3308 if (print_last_init_comp(param)) {
3310 * directory layout contains only layout template, print the
3314 i = comp_v1->lcm_entry_count - 1;
3317 flags &= ~LDF_SKIP_OBJS;
3319 lov_dump_comp_v1_entry(param, flags, i);
3321 v1 = lov_comp_entry(comp_v1, i);
3322 objects = lov_v1v3_objects(v1);
3323 lov_v1v3_pool_name(v1, pool_name);
3325 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3326 param->fp_max_depth, param->fp_verbose,
3331 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3332 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3335 static inline bool has_any_comp_options(struct find_param *param)
3337 int verbose = param->fp_verbose;
3339 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3340 param->fp_check_comp_start || param->fp_check_comp_end ||
3341 param->fp_check_comp_flags)
3344 /* show full layout information, not component specific */
3345 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3348 return verbose & VERBOSE_COMP_OPTS;
3351 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3354 struct lov_user_md *lum = &orig->lmd_lmm;
3355 struct lov_user_mds_data *new;
3356 struct lov_comp_md_v1 *comp_v1;
3357 struct lov_comp_md_entry_v1 *ent;
3358 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3359 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3362 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3364 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3368 memcpy(new, orig, sizeof(lstat_t));
3370 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3371 comp_v1->lcm_magic = lum->lmm_magic;
3372 comp_v1->lcm_size = lum_off + lum_size;
3373 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3374 comp_v1->lcm_flags = 0;
3375 comp_v1->lcm_entry_count = 1;
3377 ent = &comp_v1->lcm_entries[0];
3379 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3380 ent->lcme_extent.e_start = 0;
3381 ent->lcme_extent.e_end = LUSTRE_EOF;
3382 ent->lcme_offset = lum_off;
3383 ent->lcme_size = lum_size;
3385 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3390 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3391 enum lov_dump_flags flags)
3393 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3395 if (has_any_comp_options(param)) {
3396 struct lov_user_mds_data *new_lmd, *orig_lmd;
3398 orig_lmd = param->fp_lmd;
3399 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3400 if (new_lmd != NULL) {
3401 param->fp_lmd = new_lmd;
3402 lov_dump_comp_v1(param, path, flags);
3403 param->fp_lmd = orig_lmd;
3409 if (magic == LOV_USER_MAGIC_V1) {
3410 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3411 param->fp_lmd->lmd_lmm.lmm_objects,
3412 path, param->fp_obd_index,
3413 param->fp_max_depth, param->fp_verbose,
3416 char pool_name[LOV_MAXPOOLNAME + 1];
3417 struct lov_user_ost_data_v1 *objects;
3418 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3420 snprintf(pool_name, sizeof(pool_name), "%s",
3421 lmmv3->lmm_pool_name);
3422 objects = lmmv3->lmm_objects;
3423 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3424 objects, path, param->fp_obd_index,
3425 param->fp_max_depth, param->fp_verbose,
3430 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3431 enum lov_dump_flags flags)
3435 if (param->fp_get_lmv || param->fp_get_default_lmv)
3436 magic = (__u32)param->fp_lmv_md->lum_magic;
3438 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3441 flags |= LDF_IS_RAW;
3446 case LOV_USER_MAGIC_V1:
3447 case LOV_USER_MAGIC_V3:
3448 lov_dump_plain_user_lmm(param, path, flags);
3451 case LMV_USER_MAGIC: {
3452 char pool_name[LOV_MAXPOOLNAME + 1];
3453 struct lmv_user_md *lum;
3455 lum = (struct lmv_user_md *)param->fp_lmv_md;
3456 snprintf(pool_name, sizeof(pool_name), "%s",
3457 lum->lum_pool_name);
3458 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3459 param->fp_max_depth, param->fp_verbose,
3463 case LOV_USER_MAGIC_COMP_V1:
3464 lov_dump_comp_v1(param, path, flags);
3467 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3468 "(expecting one of %#x %#x %#x %#x)\n",
3469 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3470 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3471 LMV_USER_MAGIC, LMV_MAGIC_V1);
3476 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3482 fname = strrchr(path, '/');
3484 /* It should be a file (or other non-directory) */
3485 if (fname == NULL) {
3486 dname = (char *)malloc(2);
3490 fname = (char *)path;
3492 dname = (char *)malloc(fname - path + 1);
3495 strncpy(dname, path, fname - path);
3496 dname[fname - path] = '\0';
3500 fd = open(dname, O_RDONLY | O_NONBLOCK);
3507 strcpy((char *)lum, fname);
3508 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3511 if (close(fd) == -1 && rc == 0)
3518 int llapi_file_lookup(int dirfd, const char *name)
3520 struct obd_ioctl_data data = { 0 };
3525 if (dirfd < 0 || name == NULL)
3528 data.ioc_version = OBD_IOCTL_VERSION;
3529 data.ioc_len = sizeof(data);
3530 data.ioc_inlbuf1 = (char *)name;
3531 data.ioc_inllen1 = strlen(name) + 1;
3533 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3535 llapi_error(LLAPI_MSG_ERROR, rc,
3536 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3541 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3547 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3548 * Return -1 or 1 if file timestamp does not or does match the given criteria
3549 * correspondingly. Return 0 if the MDS time is being checked and there are
3550 * attributes on OSTs and it is not yet clear if the timespamp matches.
3552 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3553 * updated timestamps. */
3554 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3559 /* Check if file is accepted. */
3560 if (param->fp_atime) {
3561 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3562 param->fp_asign, param->fp_exclude_atime,
3569 if (param->fp_mtime) {
3570 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3571 param->fp_msign, param->fp_exclude_mtime,
3576 /* If the previous check matches, but this one is not yet clear,
3577 * we should return 0 to do an RPC on OSTs. */
3582 if (param->fp_ctime) {
3583 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3584 param->fp_csign, param->fp_exclude_ctime,
3589 /* If the previous check matches, but this one is not yet clear,
3590 * we should return 0 to do an RPC on OSTs. */
3599 * Check whether the stripes matches the indexes user provided
3603 static int check_obd_match(struct find_param *param)
3605 struct lov_user_ost_data_v1 *objects;
3606 struct lov_comp_md_v1 *comp_v1 = NULL;
3607 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3608 lstat_t *st = ¶m->fp_lmd->lmd_st;
3609 int i, j, k, count = 1;
3611 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3614 if (!S_ISREG(st->st_mode))
3617 /* Only those files should be accepted, which have a
3618 * stripe on the specified OST. */
3619 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3620 comp_v1 = (struct lov_comp_md_v1 *)v1;
3621 count = comp_v1->lcm_entry_count;
3624 for (i = 0; i < count; i++) {
3626 v1 = lov_comp_entry(comp_v1, i);
3628 objects = lov_v1v3_objects(v1);
3630 for (j = 0; j < v1->lmm_stripe_count; j++) {
3631 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3634 for (k = 0; k < param->fp_num_obds; k++) {
3635 if (param->fp_obd_indexes[k] ==
3636 objects[j].l_ost_idx)
3637 return !param->fp_exclude_obd;
3642 return param->fp_exclude_obd;
3645 static int check_mdt_match(struct find_param *param)
3649 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3652 /* FIXME: For striped dir, we should get stripe information and check */
3653 for (i = 0; i < param->fp_num_mdts; i++) {
3654 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3655 return !param->fp_exclude_mdt;
3658 if (param->fp_exclude_mdt)
3665 * Check whether the obd is active or not, if it is
3666 * not active, just print the object affected by this
3669 static int print_failed_tgt(struct find_param *param, char *path, int type)
3671 struct obd_statfs stat_buf;
3672 struct obd_uuid uuid_buf;
3675 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3678 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3679 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3680 ret = llapi_obd_statfs(path, type,
3681 param->fp_obd_index, &stat_buf,
3684 llapi_printf(LLAPI_MSG_NORMAL,
3685 "obd_uuid: %s failed %s ",
3686 param->fp_obd_uuid->uuid,
3693 static int find_check_stripe_size(struct find_param *param)
3695 struct lov_comp_md_v1 *comp_v1 = NULL;
3696 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3697 int ret, i, count = 1;
3699 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3700 comp_v1 = (struct lov_comp_md_v1 *)v1;
3701 count = comp_v1->lcm_entry_count;
3702 ret = param->fp_exclude_stripe_size ? 1 : -1;
3705 for (i = 0; i < count; i++) {
3707 v1 = lov_comp_entry(comp_v1, i);
3709 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3710 param->fp_stripe_size_sign,
3711 param->fp_exclude_stripe_size,
3712 param->fp_stripe_size_units, 0);
3713 /* If any stripe_size matches */
3721 static __u32 find_get_stripe_count(struct find_param *param)
3723 struct lov_comp_md_v1 *comp_v1 = NULL;
3724 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3726 __u32 stripe_count = 0;
3728 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3729 comp_v1 = (struct lov_comp_md_v1 *)v1;
3730 count = comp_v1->lcm_entry_count;
3733 for (i = 0; i < count; i++) {
3735 v1 = lov_comp_entry(comp_v1, i);
3736 stripe_count += v1->lmm_stripe_count;
3739 return stripe_count;
3742 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3744 static int find_check_layout(struct find_param *param)
3746 struct lov_comp_md_v1 *comp_v1 = NULL;
3747 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3749 bool found = false, valid = false;
3751 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3752 comp_v1 = (struct lov_comp_md_v1 *)v1;
3753 count = comp_v1->lcm_entry_count;
3756 for (i = 0; i < count; i++) {
3758 v1 = lov_comp_entry(comp_v1, i);
3760 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3764 if (v1->lmm_pattern & param->fp_layout) {
3773 if ((found && !param->fp_exclude_layout) ||
3774 (!found && param->fp_exclude_layout))
3780 static int find_check_pool(struct find_param *param)
3782 struct lov_comp_md_v1 *comp_v1 = NULL;
3783 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3784 struct lov_user_md_v3 *v3 = (void *)v1;
3788 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3789 comp_v1 = (struct lov_comp_md_v1 *)v1;
3790 count = comp_v1->lcm_entry_count;
3791 /* empty requested pool is taken as no pool search */
3792 if (count == 0 && param->fp_poolname[0] == '\0')
3796 for (i = 0; i < count; i++) {
3797 if (comp_v1 != NULL)
3798 v1 = lov_comp_entry(comp_v1, i);
3800 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3801 (param->fp_poolname[0] == '\0')) ||
3802 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3803 (strncmp(v3->lmm_pool_name,
3804 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3805 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3806 (strcmp(param->fp_poolname, "*") == 0))) {
3812 if ((found && !param->fp_exclude_pool) ||
3813 (!found && param->fp_exclude_pool))
3819 static int find_check_comp_options(struct find_param *param)
3821 lstat_t *st = ¶m->fp_lmd->lmd_st;
3822 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3823 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3824 struct lov_comp_md_entry_v1 *entry;
3827 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3828 comp_v1 = (struct lov_comp_md_v1 *)v1;
3830 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3831 if (forged_v1 == NULL)
3833 comp_v1 = forged_v1;
3834 comp_v1->lcm_entry_count = 1;
3835 entry = &comp_v1->lcm_entries[0];
3836 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3837 entry->lcme_extent.e_start = 0;
3838 entry->lcme_extent.e_end = LUSTRE_EOF;
3841 /* invalid case, don't match for any kind of search. */
3842 if (comp_v1->lcm_entry_count == 0) {
3847 if (param->fp_check_comp_count) {
3848 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3849 param->fp_comp_count,
3850 param->fp_comp_count_sign,
3851 param->fp_exclude_comp_count, 1, 0);
3857 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3858 entry = &comp_v1->lcm_entries[i];
3860 if (param->fp_check_comp_flags) {
3862 if (((param->fp_comp_flags & entry->lcme_flags) !=
3863 param->fp_comp_flags) ||
3864 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3870 if (param->fp_check_comp_start) {
3871 ret = find_value_cmp(entry->lcme_extent.e_start,
3872 param->fp_comp_start,
3873 param->fp_comp_start_sign,
3874 param->fp_exclude_comp_start,
3875 param->fp_comp_start_units, 0);
3880 if (param->fp_check_comp_end) {
3881 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3887 /* the component matches all criteria */
3891 if (forged_v1 != NULL)
3896 static int find_check_mirror_options(struct find_param *param)
3898 struct lov_comp_md_v1 *comp_v1;
3899 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3902 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3905 comp_v1 = (struct lov_comp_md_v1 *)v1;
3907 if (param->fp_check_mirror_count) {
3908 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3909 param->fp_mirror_count,
3910 param->fp_mirror_count_sign,
3911 param->fp_exclude_mirror_count, 1, 0);
3916 if (param->fp_check_mirror_state) {
3918 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
3920 if ((param->fp_mirror_state != 0 &&
3921 file_state != param->fp_mirror_state) ||
3922 file_state == param->fp_mirror_neg_state)
3929 static bool find_check_lmm_info(struct find_param *param)
3931 return param->fp_check_pool || param->fp_check_stripe_count ||
3932 param->fp_check_stripe_size || param->fp_check_layout ||
3933 param->fp_check_comp_count || param->fp_check_comp_end ||
3934 param->fp_check_comp_start || param->fp_check_comp_flags ||
3935 param->fp_check_mirror_count ||
3936 param->fp_check_mirror_state ||
3937 param->fp_check_projid;
3941 * Get file/directory project id.
3942 * by the open fd resides on.
3943 * Return 0 and project id on success, or -ve errno.
3945 static int fget_projid(int fd, int *projid)
3950 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3954 *projid = fsx.fsx_projid;
3958 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3959 void *data, struct dirent64 *de)
3961 struct find_param *param = (struct find_param *)data;
3962 DIR *dir = dirp == NULL ? NULL : *dirp;
3963 int decision = 1; /* 1 is accepted; -1 is rejected. */
3964 lstat_t *st = ¶m->fp_lmd->lmd_st;
3966 int checked_type = 0;
3968 __u32 stripe_count = 0;
3971 if (parent == NULL && dir == NULL)
3974 /* If a regular expression is presented, make the initial decision */
3975 if (param->fp_pattern != NULL) {
3976 char *fname = strrchr(path, '/');
3977 fname = (fname == NULL ? path : fname + 1);
3978 ret = fnmatch(param->fp_pattern, fname, 0);
3979 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3980 (ret == 0 && param->fp_exclude_pattern))
3984 /* See if we can check the file type from the dirent. */
3985 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3988 if (DTTOIF(de->d_type) == param->fp_type) {
3989 if (param->fp_exclude_type)
3992 if (!param->fp_exclude_type)
3999 /* Request MDS for the stat info if some of these parameters need
4000 * to be compared. */
4001 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4002 param->fp_check_uid || param->fp_check_gid ||
4003 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4004 param->fp_check_size || param->fp_check_blocks ||
4005 find_check_lmm_info(param) ||
4006 param->fp_check_mdt_count || param->fp_check_hash_type)
4009 if (param->fp_type != 0 && checked_type == 0)
4012 if (decision == 0) {
4013 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4014 param->fp_get_lmv = 1;
4015 ret = cb_get_dirstripe(path, dir, param);
4020 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4021 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4022 param->fp_lum_size, GET_LMD_INFO);
4023 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4024 find_check_lmm_info(param)) {
4025 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4027 /* We need to "fake" the "use the default" values
4028 * since the lmm struct is zeroed out at this point. */
4029 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4030 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4032 ostid_set_seq(&lmm->lmm_oi,
4033 FID_SEQ_LOV_DEFAULT);
4034 lmm->lmm_stripe_size = 0;
4035 lmm->lmm_stripe_count = 0;
4036 lmm->lmm_stripe_offset = -1;
4038 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4040 ret = llapi_file_fget_mdtidx(dirfd(dir),
4041 ¶m->fp_file_mdt_index);
4042 } else if (S_ISREG(st->st_mode)) {
4043 /* FIXME: we could get the MDT index from the
4044 * file's FID in lmd->lmd_lmm.lmm_oi without
4045 * opening the file, once we are sure that
4046 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4047 * That would still be an ioctl() to map the
4048 * FID to the MDT, but not an open RPC. */
4049 fd = open(path, O_RDONLY);
4051 ret = llapi_file_fget_mdtidx(fd,
4052 ¶m->fp_file_mdt_index);
4057 /* For a special file, we assume it resides on
4058 * the same MDT as the parent directory. */
4059 ret = llapi_file_fget_mdtidx(dirfd(parent),
4060 ¶m->fp_file_mdt_index);
4071 stripe_count = find_get_stripe_count(param);
4075 if (param->fp_type && !checked_type) {
4076 if ((st->st_mode & S_IFMT) == param->fp_type) {
4077 if (param->fp_exclude_type)
4080 if (!param->fp_exclude_type)
4086 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4087 if (lustre_fs && param->fp_got_uuids &&
4088 param->fp_dev != st->st_dev) {
4089 /* A lustre/lustre mount point is crossed. */
4090 param->fp_got_uuids = 0;
4091 param->fp_obds_printed = 0;
4092 param->fp_mdt_index = OBD_NOT_FOUND;
4093 param->fp_obd_index = OBD_NOT_FOUND;
4096 if (lustre_fs && !param->fp_got_uuids) {
4097 ret = setup_target_indexes(dir ? dir : parent, path,
4102 param->fp_dev = st->st_dev;
4103 } else if (!lustre_fs && param->fp_got_uuids) {
4104 /* A lustre/non-lustre mount point is crossed. */
4105 param->fp_got_uuids = 0;
4106 param->fp_mdt_index = OBD_NOT_FOUND;
4107 param->fp_obd_index = OBD_NOT_FOUND;
4111 if (param->fp_check_stripe_size) {
4112 decision = find_check_stripe_size(param);
4117 if (param->fp_check_stripe_count) {
4118 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4119 param->fp_stripe_count_sign,
4120 param->fp_exclude_stripe_count, 1, 0);
4125 if (param->fp_check_mdt_count) {
4126 decision = find_value_cmp(
4127 param->fp_lmv_md->lum_stripe_count,
4128 param->fp_mdt_count,
4129 param->fp_mdt_count_sign,
4130 param->fp_exclude_mdt_count, 1, 0);
4135 if (param->fp_check_layout) {
4136 decision = find_check_layout(param);
4141 if (param->fp_check_hash_type) {
4144 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4145 if ((found && param->fp_exclude_hash_type) ||
4146 (!found && !param->fp_exclude_hash_type)) {
4152 /* If an OBD UUID is specified but none matches, skip this file. */
4153 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4154 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4157 /* If an OST or MDT UUID is given, and some OST matches,
4159 if (param->fp_obd_index != OBD_NOT_FOUND ||
4160 param->fp_mdt_index != OBD_NOT_FOUND) {
4161 if (param->fp_obd_uuid) {
4162 if (check_obd_match(param)) {
4163 /* If no mdtuuid is given, we are done.
4164 * Otherwise, fall through to the mdtuuid
4166 if (!param->fp_mdt_uuid)
4173 if (param->fp_mdt_uuid) {
4174 if (check_mdt_match(param))
4181 if (param->fp_check_uid) {
4182 if (st->st_uid == param->fp_uid) {
4183 if (param->fp_exclude_uid)
4186 if (!param->fp_exclude_uid)
4191 if (param->fp_check_gid) {
4192 if (st->st_gid == param->fp_gid) {
4193 if (param->fp_exclude_gid)
4196 if (!param->fp_exclude_gid)
4201 if (param->fp_check_projid) {
4205 fd = open(path, O_RDONLY);
4208 ret = fget_projid(fd, &projid);
4213 if (projid == param->fp_projid) {
4214 if (param->fp_exclude_uid)
4217 if (!param->fp_exclude_projid)
4222 if (param->fp_check_pool) {
4223 decision = find_check_pool(param);
4228 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4229 param->fp_check_comp_start || param->fp_check_comp_end) {
4230 decision = find_check_comp_options(param);
4235 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4236 decision = find_check_mirror_options(param);
4241 /* Check the time on mds. */
4243 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4246 for_mds = lustre_fs ?
4247 (S_ISREG(st->st_mode) && stripe_count) : 0;
4248 decision = find_time_check(st, param, for_mds);
4253 /* If file still fits the request, ask ost for updated info.
4254 The regular stat is almost of the same speed as some new
4255 'glimpse-size-ioctl'. */
4257 if ((param->fp_check_size || param->fp_check_blocks) &&
4258 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4262 /* For regular files with the stripe the decision may have not
4263 * been taken yet if *time or size is to be checked. */
4264 if (param->fp_obd_index != OBD_NOT_FOUND)
4265 print_failed_tgt(param, path, LL_STATFS_LOV);
4267 if (param->fp_mdt_index != OBD_NOT_FOUND)
4268 print_failed_tgt(param, path, LL_STATFS_LMV);
4271 ret = fstat_f(dirfd(dir), st);
4272 else if (de != NULL)
4273 ret = fstatat_f(dirfd(parent), de->d_name, st,
4274 AT_SYMLINK_NOFOLLOW);
4276 ret = lstat_f(path, st);
4279 if (errno == ENOENT) {
4280 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4281 "warning: %s: %s does not exist",
4286 llapi_error(LLAPI_MSG_ERROR, ret,
4287 "%s: IOC_LOV_GETINFO on %s failed",
4293 /* Check the time on osc. */
4294 decision = find_time_check(st, param, 0);
4299 if (param->fp_check_size) {
4300 decision = find_value_cmp(st->st_size, param->fp_size,
4301 param->fp_size_sign,
4302 param->fp_exclude_size,
4303 param->fp_size_units, 0);
4308 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4309 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4310 param->fp_blocks_sign,
4311 param->fp_exclude_blocks,
4312 param->fp_blocks_units, 0);
4317 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4318 if (param->fp_zero_end)
4319 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4321 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4325 /* Do not get down anymore? */
4326 if (param->fp_depth == param->fp_max_depth) {
4337 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4338 void *param_data, struct dirent64 *de)
4340 struct find_param *param = (struct find_param *)param_data;
4341 DIR *tmp_parent = parent;
4342 char raw[MAX_IOC_BUFLEN] = {'\0'};
4344 struct obd_ioctl_data data = { 0 };
4351 if (parent == NULL && dirp == NULL)
4357 if (parent == NULL) {
4358 tmp_parent = opendir_parent(path);
4359 if (tmp_parent == NULL) {
4362 llapi_error(LLAPI_MSG_ERROR, ret,
4363 "can not open %s", path);
4368 fd = dirfd(tmp_parent);
4370 path_copy = strdup(path);
4371 filename = basename(path_copy);
4372 data.ioc_inlbuf1 = (char *)filename;
4373 data.ioc_inllen1 = strlen(filename) + 1;
4374 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4375 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4376 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4378 llapi_error(LLAPI_MSG_ERROR, ret,
4379 "llapi_obd_statfs: error packing ioctl data");
4384 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4386 if (errno == EBUSY && !retry) {
4387 /* because migrate may not be able to lock all involved
4388 * objects in order, for some of them it try lock, while
4389 * there may be conflicting COS locks and cause migrate
4390 * fail with EBUSY, hope a sync() could cause
4391 * transaction commit and release these COS locks. */
4397 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4398 path, strerror(-ret), ret);
4400 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4401 fprintf(stdout, "migrate %s to MDT%d\n",
4402 path, param->fp_mdt_index);
4407 /* If the directory is being migration, we need
4408 * close the directory after migration,
4409 * so the old directory cache will be cleanup
4410 * on the client side, and re-open to get the
4411 * new directory handle */
4412 *dirp = opendir(path);
4413 if (*dirp == NULL) {
4415 llapi_error(LLAPI_MSG_ERROR, ret,
4416 "%s: Failed to open '%s'", __func__, path);
4421 closedir(tmp_parent);
4428 int llapi_migrate_mdt(char *path, struct find_param *param)
4430 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4433 int llapi_mv(char *path, struct find_param *param)
4435 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4436 static bool printed;
4439 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4440 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4444 return llapi_migrate_mdt(path, param);
4447 int llapi_find(char *path, struct find_param *param)
4449 return param_callback(path, cb_find_init, cb_common_fini, param);
4453 * Get MDT number that the file/directory inode referenced
4454 * by the open fd resides on.
4455 * Return 0 and mdtidx on success, or -ve errno.
4457 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4459 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4464 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4465 struct dirent64 *de)
4467 struct find_param *param = (struct find_param *)data;
4468 DIR *d = dirp == NULL ? NULL : *dirp;
4472 if (parent == NULL && d == NULL)
4476 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4477 } else /* if (parent) */ {
4480 fd = open(path, O_RDONLY | O_NOCTTY);
4482 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4490 if (ret == -ENODATA) {
4491 if (!param->fp_obd_uuid)
4492 llapi_printf(LLAPI_MSG_NORMAL,
4493 "'%s' has no stripe info\n", path);
4495 } else if (ret == -ENOENT) {
4496 llapi_error(LLAPI_MSG_WARN, ret,
4497 "warning: %s: '%s' does not exist",
4500 } else if (ret == -ENOTTY) {
4501 llapi_error(LLAPI_MSG_ERROR, ret,
4502 "%s: '%s' not on a Lustre fs",
4505 llapi_error(LLAPI_MSG_ERROR, ret,
4506 "error: %s: '%s' failed get_mdtidx",
4512 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4513 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4515 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4519 /* Do not go down anymore? */
4520 if (param->fp_depth == param->fp_max_depth)
4528 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4529 struct dirent64 *de)
4531 struct find_param *param = (struct find_param *)data;
4532 DIR *d = dirp == NULL ? NULL : *dirp;
4535 if (parent == NULL && d == NULL)
4538 if (param->fp_obd_uuid) {
4539 param->fp_quiet = 1;
4540 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4545 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4546 ret = cb_get_dirstripe(path, d, param);
4548 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4549 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4550 param->fp_lum_size, GET_LMD_STRIPE);
4555 if (errno == ENODATA && d != NULL) {
4556 /* We need to "fake" the "use the default" values
4557 * since the lmm struct is zeroed out at this point.
4558 * The magic needs to be set in order to satisfy
4559 * a check later on in the code path.
4560 * The object_seq needs to be set for the "(Default)"
4561 * prefix to be displayed. */
4562 if (param->fp_get_default_lmv) {
4563 struct lmv_user_md *lum = param->fp_lmv_md;
4565 lum->lum_magic = LMV_USER_MAGIC;
4566 lum->lum_stripe_count = 0;
4567 lum->lum_stripe_offset = -1;
4569 } else if (param->fp_get_lmv) {
4570 struct lmv_user_md *lum = param->fp_lmv_md;
4573 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4576 lum->lum_magic = LMV_MAGIC_V1;
4577 lum->lum_stripe_count = 0;
4578 lum->lum_stripe_offset = mdtidx;
4581 struct lov_user_md *lmm =
4582 ¶m->fp_lmd->lmd_lmm;
4584 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4586 ostid_set_seq(&lmm->lmm_oi,
4587 FID_SEQ_LOV_DEFAULT);
4588 lmm->lmm_stripe_count = 0;
4589 lmm->lmm_stripe_size = 0;
4590 lmm->lmm_stripe_offset = -1;
4593 } else if (errno == ENODATA && parent != NULL) {
4594 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4595 llapi_printf(LLAPI_MSG_NORMAL,
4596 "%s has no stripe info\n", path);
4598 } else if (errno == ENOENT) {
4599 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4600 "warning: %s: %s does not exist",
4603 } else if (errno == ENOTTY) {
4605 llapi_error(LLAPI_MSG_ERROR, ret,
4606 "%s: '%s' not on a Lustre fs?",
4611 llapi_error(LLAPI_MSG_ERROR, ret,
4612 "error: %s: %s failed for %s",
4613 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4614 "IOC_MDC_GETFILESTRIPE", path);
4621 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4622 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4625 /* Do not get down anymore? */
4626 if (param->fp_depth == param->fp_max_depth)
4634 int llapi_getstripe(char *path, struct find_param *param)
4636 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4637 cb_get_mdt_index : cb_getstripe,
4638 cb_common_fini, param);
4641 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4642 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4644 char raw[MAX_IOC_BUFLEN] = {'\0'};
4646 struct obd_ioctl_data data = { 0 };
4649 data.ioc_inlbuf1 = (char *)&type;
4650 data.ioc_inllen1 = sizeof(__u32);
4651 data.ioc_inlbuf2 = (char *)&index;
4652 data.ioc_inllen2 = sizeof(__u32);
4653 data.ioc_pbuf1 = (char *)stat_buf;
4654 data.ioc_plen1 = sizeof(struct obd_statfs);
4655 data.ioc_pbuf2 = (char *)uuid_buf;
4656 data.ioc_plen2 = sizeof(struct obd_uuid);
4658 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4660 llapi_error(LLAPI_MSG_ERROR, rc,
4661 "llapi_obd_statfs: error packing ioctl data");
4665 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4667 return rc < 0 ? -errno : 0;
4670 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4671 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4676 fd = open(path, O_RDONLY);
4679 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4681 /* If we can't even open a file on the filesystem (e.g. with
4682 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4686 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4693 #define MAX_STRING_SIZE 128
4695 int llapi_ping(char *obd_type, char *obd_name)
4701 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4702 obd_type, obd_name);
4706 fd = open(path.gl_pathv[0], O_WRONLY);
4709 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4714 /* The purpose is to send a byte as a ping, whatever this byte is. */
4715 /* coverity[uninit_use_in_call] */
4716 rc = write(fd, buf, 1);
4724 cfs_free_param_data(&path);
4728 int llapi_target_iterate(int type_num, char **obd_type,
4729 void *args, llapi_cb_t cb)
4731 char buf[MAX_STRING_SIZE];
4736 rc = cfs_get_param_paths(¶m, "devices");
4740 fp = fopen(param.gl_pathv[0], "r");
4743 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4748 while (fgets(buf, sizeof(buf), fp) != NULL) {
4749 char *obd_type_name = NULL;
4750 char *obd_name = NULL;
4751 char *obd_uuid = NULL;
4753 struct obd_statfs osfs_buffer;
4755 while(bufp[0] == ' ')
4758 for(i = 0; i < 3; i++) {
4759 obd_type_name = strsep(&bufp, " ");
4761 obd_name = strsep(&bufp, " ");
4762 obd_uuid = strsep(&bufp, " ");
4764 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4766 for (i = 0; i < type_num; i++) {
4767 if (strcmp(obd_type_name, obd_type[i]) != 0)
4770 cb(obd_type_name, obd_name, obd_uuid, args);
4775 cfs_free_param_data(¶m);
4779 static void do_target_check(char *obd_type_name, char *obd_name,
4780 char *obd_uuid, void *args)
4784 rc = llapi_ping(obd_type_name, obd_name);
4785 if (rc == ENOTCONN) {
4786 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4788 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4790 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4794 int llapi_target_check(int type_num, char **obd_type, char *dir)
4796 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4799 #undef MAX_STRING_SIZE
4801 /* Is this a lustre fs? */
4802 int llapi_is_lustre_mnttype(const char *type)
4804 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4807 /* Is this a lustre client fs? */
4808 int llapi_is_lustre_mnt(struct mntent *mnt)
4810 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4811 strstr(mnt->mnt_fsname, ":/") != NULL);
4814 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4816 char fsname[PATH_MAX + 1];
4820 rc = llapi_search_fsname(mnt, fsname);
4824 root = open(mnt, O_RDONLY | O_DIRECTORY);
4827 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4831 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4839 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4840 * format must have %s%s, buf must be > 16
4841 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4842 * then buf = "lustre-MDT0000"
4844 static int get_mdtname(char *name, char *format, char *buf)
4846 char suffix[]="-MDT0000";
4847 int len = strlen(name);
4849 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4850 name[len - 5] = '\0';
4855 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4858 /* Not enough room to add suffix */
4859 llapi_err_noerrno(LLAPI_MSG_ERROR,
4860 "Invalid MDT name |%s|", name);
4865 return sprintf(buf, format, name, suffix);
4868 /** ioctl on filsystem root, with mdtindex sent as data
4869 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4870 * \param mdtidxp pointer to integer within data to be filled in with the
4871 * mdt index (0 if no mdt is specified). NULL won't be filled.
4873 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4881 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4882 Open root and parse mdt index. */
4883 if (mdtname[0] == '/') {
4885 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4886 (char *)mdtname, -1);
4888 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4890 ptr = fsname + strlen(fsname) - 8;
4892 index = strtol(ptr + 4, NULL, 16);
4893 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4897 llapi_err_noerrno(LLAPI_MSG_ERROR,
4898 "Can't open %s: %d\n", mdtname, rc);
4905 rc = ioctl(fd, opc, data);
4914 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4915 int buflen, long long *recno, int *linkno)
4917 const char *fidstr_orig = fidstr;
4919 struct getinfo_fid2path *gf;
4924 while (*fidstr == '[')
4927 sscanf(fidstr, SFID, RFID(&fid));
4928 if (!fid_is_sane(&fid)) {
4929 llapi_err_noerrno(LLAPI_MSG_ERROR,
4930 "bad FID format '%s', should be [seq:oid:ver]"
4931 " (e.g. "DFID")\n", fidstr_orig,
4932 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4936 gf = malloc(sizeof(*gf) + buflen);
4941 gf->gf_recno = *recno;
4942 gf->gf_linkno = *linkno;
4943 gf->gf_pathlen = buflen;
4945 /* Take path or fsname */
4946 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4951 /* strip out instances of // */
4952 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4953 if ((*a == '/') && (*(a + 1) == '/'))
4960 if (buf[0] == '\0') { /* ROOT path */
4965 *recno = gf->gf_recno;
4966 *linkno = gf->gf_linkno;
4973 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
4976 struct lustre_mdt_attrs *lma;
4980 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4982 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4985 lma = (struct lustre_mdt_attrs *)buf;
4986 fid_le_to_cpu(fid, &lma->lma_self_fid);
4990 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
4995 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5004 int llapi_fd2fid(int fd, struct lu_fid *fid)
5008 memset(fid, 0, sizeof(*fid));
5010 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5011 if (rc == -EINVAL || rc == -ENOTTY)
5012 rc = fid_from_lma(NULL, fd, fid);
5017 int llapi_path2fid(const char *path, struct lu_fid *fid)
5021 memset(fid, 0, sizeof(*fid));
5022 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5024 if (errno == ELOOP || errno == ENXIO)
5025 return fid_from_lma(path, -1, fid);
5029 rc = llapi_fd2fid(fd, fid);
5030 if (rc == -EINVAL || rc == -ENOTTY)
5031 rc = fid_from_lma(path, -1, fid);
5037 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5038 char *name, size_t name_size)
5040 struct getparent *gp;
5043 gp = malloc(sizeof(*gp) + name_size);
5047 gp->gp_linkno = linkno;
5048 gp->gp_name_size = name_size;
5050 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5056 *parent_fid = gp->gp_fid;
5058 strncpy(name, gp->gp_name, name_size);
5059 name[name_size - 1] = '\0';
5066 int llapi_path2parent(const char *path, unsigned int linkno,
5067 struct lu_fid *parent_fid, char *name, size_t name_size)
5072 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5076 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5081 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5086 root = open(mnt, O_RDONLY | O_DIRECTORY);
5089 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5093 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5096 llapi_error(LLAPI_MSG_ERROR, rc,
5097 "ioctl on %s for getting connect flags failed", mnt);
5104 * Get a 64-bit value representing the version of file data pointed by fd.
5106 * Each write or truncate, flushed on OST, will change this value. You can use
5107 * this value to verify if file data was modified. This only checks the file
5108 * data, not metadata.
5110 * \param flags 0: no flush pages, usually used it the process has already
5112 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5114 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5115 * pages from clients.
5117 * \retval 0 on success.
5118 * \retval -errno on error.
5120 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5123 struct ioc_data_version idv;
5125 idv.idv_flags = (__u32)flags;
5127 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5131 *data_version = idv.idv_version;
5137 * Flush cached pages from all clients.
5139 * \param fd File descriptor
5143 int llapi_file_flush(int fd)
5147 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5151 * Fetch layout version from OST objects. Layout version on OST objects are
5152 * only set when the file is a mirrored file AND after the file has been
5153 * written at least once.
5155 * It actually fetches the least layout version from the objects.
5157 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5160 struct ioc_data_version idv = { 0 };
5162 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5166 *layout_version = idv.idv_layout_version;
5172 * Create a file without any name open it for read/write
5174 * - file is created as if it were a standard file in the given \a directory
5175 * - file does not appear in \a directory and mtime does not change because
5176 * the filename is handled specially by the Lustre MDS.
5177 * - file is removed at final close
5178 * - file modes are rw------- since it doesn't make sense to have a read-only
5179 * or write-only file that cannot be opened again.
5180 * - if user wants another mode it must use fchmod() on the open file, no
5181 * security problems arise because it cannot be opened by another process.
5183 * \param[in] directory directory from which to inherit layout/MDT idx
5184 * \param[in] idx MDT index on which the file is created,
5185 * \a idx == -1 means no specific MDT is requested
5186 * \param[in] open_flags standard open(2) flags
5188 * \retval 0 on success.
5189 * \retval -errno on error.
5191 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5193 char file_path[PATH_MAX];
5194 char filename[PATH_MAX];
5195 int saved_errno = errno;
5203 snprintf(filename, sizeof(filename),
5204 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5206 snprintf(filename, sizeof(filename),
5207 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5209 rc = snprintf(file_path, sizeof(file_path),
5210 "%s/%s", directory, filename);
5211 if (rc >= sizeof(file_path))
5214 fd = open(file_path,
5215 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5217 } while (fd < 0 && errno == EEXIST);
5220 llapi_error(LLAPI_MSG_ERROR, errno,
5221 "Cannot create volatile file '%s' in '%s'",
5222 filename + LUSTRE_VOLATILE_HDR_LEN,
5227 /* Unlink file in case this wasn't a Lustre filesystem and the
5228 * magic volatile filename wasn't handled as intended. The
5229 * effect is the same. If volatile open was supported then we
5230 * expect unlink() to return -ENOENT. */
5231 (void)unlink(file_path);
5233 /* Since we are returning successfully we restore errno (and
5234 * mask out possible EEXIST from open() and ENOENT from
5236 errno = saved_errno;
5242 * Swap the layouts between 2 file descriptors
5243 * the 2 files must be open for writing
5244 * first fd received the ioctl, second fd is passed as arg
5245 * this is assymetric but avoid use of root path for ioctl
5247 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5248 int gid, __u64 flags)
5250 struct lustre_swap_layouts lsl;
5255 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5256 rc = fstat(fd1, &st1);
5260 rc = fstat(fd2, &st2);
5265 lsl.sl_flags = flags;
5269 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5273 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5274 struct timeval tv1[2];
5275 struct timeval tv2[2];
5277 memset(tv1, 0, sizeof(tv1));
5278 memset(tv2, 0, sizeof(tv2));
5280 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5281 tv1[0].tv_sec = st1.st_atime;
5282 tv2[0].tv_sec = st2.st_atime;
5284 tv1[0].tv_sec = st2.st_atime;
5285 tv2[0].tv_sec = st1.st_atime;
5288 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5289 tv1[1].tv_sec = st1.st_mtime;
5290 tv2[1].tv_sec = st2.st_mtime;
5292 tv1[1].tv_sec = st2.st_mtime;
5293 tv2[1].tv_sec = st1.st_mtime;
5296 rc = futimes(fd1, tv1);
5300 rc = futimes(fd2, tv2);
5308 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5315 while (grp_id == 0);
5317 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5325 * Swap the layouts between 2 files
5326 * the 2 files are open in write
5328 int llapi_swap_layouts(const char *path1, const char *path2,
5329 __u64 dv1, __u64 dv2, __u64 flags)
5333 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5336 llapi_error(LLAPI_MSG_ERROR, rc,
5337 "error: cannot open '%s' for write", path1);
5341 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5344 llapi_error(LLAPI_MSG_ERROR, rc,
5345 "error: cannot open '%s' for write", path2);
5349 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5351 llapi_error(LLAPI_MSG_ERROR, rc,
5352 "error: cannot swap layout between '%s' and '%s'",
5363 * Attempt to open a file with Lustre file identifier \a fid
5364 * and return an open file descriptor.
5366 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5367 * \param[in] fid Lustre file identifier of file to open
5368 * \param[in] flags open() flags
5370 * \retval non-negative file descriptor on successful open
5371 * \retval -1 if an error occurred
5373 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5376 char mntdir[PATH_MAX];
5377 char path[PATH_MAX];
5380 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5384 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5385 return open(path, flags);
5391 * \param fd File to lock.
5392 * \param gid Group Identifier.
5394 * \retval 0 on success.
5395 * \retval -errno on failure.
5397 int llapi_group_lock(int fd, int gid)
5401 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5404 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5412 * \param fd File to unlock.
5413 * \param gid Group Identifier.
5415 * \retval 0 on success.
5416 * \retval -errno on failure.
5418 int llapi_group_unlock(int fd, int gid)
5422 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5425 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");