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 "setstripe error for '%s': %s", name, errmsg);
776 int llapi_file_open_pool(const char *name, int flags, int mode,
777 unsigned long long stripe_size, int stripe_offset,
778 int stripe_count, int stripe_pattern, char *pool_name)
780 const struct llapi_stripe_param param = {
781 .lsp_stripe_size = stripe_size,
782 .lsp_stripe_count = stripe_count,
783 .lsp_stripe_pattern = stripe_pattern,
784 .lsp_stripe_offset = stripe_offset,
785 .lsp_pool = pool_name
787 return llapi_file_open_param(name, flags, mode, ¶m);
790 int llapi_file_open(const char *name, int flags, int mode,
791 unsigned long long stripe_size, int stripe_offset,
792 int stripe_count, int stripe_pattern)
794 return llapi_file_open_pool(name, flags, mode, stripe_size,
795 stripe_offset, stripe_count,
796 stripe_pattern, NULL);
799 int llapi_file_create(const char *name, unsigned long long stripe_size,
800 int stripe_offset, int stripe_count, int stripe_pattern)
804 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
805 stripe_offset, stripe_count, stripe_pattern,
814 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
815 int stripe_offset, int stripe_count,
816 int stripe_pattern, char *pool_name)
820 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
821 stripe_offset, stripe_count, stripe_pattern,
830 static int verify_dir_param(const char *name,
831 const struct llapi_stripe_param *param)
833 char fsname[MAX_OBD_NAME + 1] = { 0 };
834 char *pool_name = param->lsp_pool;
837 /* Make sure we are on a Lustre file system */
838 rc = llapi_search_fsname(name, fsname);
840 llapi_error(LLAPI_MSG_ERROR, rc,
841 "'%s' is not on a Lustre filesystem",
846 /* Check if the stripe pattern is sane. */
847 rc = llapi_dir_stripe_limit_check(param->lsp_stripe_offset,
848 param->lsp_stripe_count,
849 param->lsp_stripe_pattern);
853 /* Make sure we have a good pool */
854 if (pool_name != NULL) {
855 /* in case user gives the full pool name <fsname>.<poolname>,
856 * strip the fsname */
857 char *ptr = strchr(pool_name, '.');
861 if (strcmp(pool_name, fsname) != 0) {
863 llapi_err_noerrno(LLAPI_MSG_ERROR,
864 "Pool '%s' is not on filesystem '%s'",
871 /* Make sure the pool exists and is non-empty */
872 rc = llapi_search_tgt(fsname, pool_name, NULL, true);
874 char *err = rc == 0 ? "has no OSTs" : "does not exist";
876 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
877 fsname, pool_name, err);
882 /* sanity check of target list */
883 if (param->lsp_is_specific) {
884 char mdtname[MAX_OBD_NAME + 1];
888 for (i = 0; i < param->lsp_stripe_count; i++) {
889 snprintf(mdtname, sizeof(mdtname), "%s-MDT%04x_UUID",
890 fsname, param->lsp_tgts[i]);
891 rc = llapi_search_tgt(fsname, pool_name, mdtname, true);
896 llapi_error(LLAPI_MSG_ERROR, rc,
897 "%s: cannot find MDT %s in %s",
904 /* Make sure stripe offset is in MDT list. */
905 if (param->lsp_tgts[i] == param->lsp_stripe_offset)
909 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
910 "%s: stripe offset '%d' is not in the "
912 __func__, param->lsp_stripe_offset);
920 static inline void param2lmu(struct lmv_user_md *lmu,
921 const struct llapi_stripe_param *param)
923 lmu->lum_magic = param->lsp_is_specific ? LMV_USER_MAGIC_SPECIFIC :
925 lmu->lum_stripe_count = param->lsp_stripe_count;
926 lmu->lum_stripe_offset = param->lsp_stripe_offset;
927 lmu->lum_hash_type = param->lsp_stripe_pattern;
928 if (param->lsp_pool != NULL)
929 strncpy(lmu->lum_pool_name, param->lsp_pool, LOV_MAXPOOLNAME);
930 if (param->lsp_is_specific) {
933 for (i = 0; i < param->lsp_stripe_count; i++)
934 lmu->lum_objects[i].lum_mds = param->lsp_tgts[i];
938 int llapi_dir_set_default_lmv(const char *name,
939 const struct llapi_stripe_param *param)
941 struct lmv_user_md lmu = { 0 };
945 rc = verify_dir_param(name, param);
949 /* TODO: default lmv doesn't support specific targets yet */
950 if (param->lsp_is_specific)
953 param2lmu(&lmu, param);
955 fd = open(name, O_DIRECTORY | O_RDONLY);
958 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
962 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lmu);
964 char *errmsg = "stripe already set";
966 if (errno != EEXIST && errno != EALREADY)
967 errmsg = strerror(errno);
969 llapi_err_noerrno(LLAPI_MSG_ERROR,
970 "default dirstripe error on '%s': %s",
977 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
978 int stripe_count, int stripe_pattern,
979 const char *pool_name)
981 const struct llapi_stripe_param param = {
982 .lsp_stripe_count = stripe_count,
983 .lsp_stripe_offset = stripe_offset,
984 .lsp_stripe_pattern = stripe_pattern,
985 .lsp_pool = (char *)pool_name
988 return llapi_dir_set_default_lmv(name, ¶m);
992 * Create a Lustre directory.
994 * \param name the name of the directory to be created
995 * \param mode permission of the file if it is created, see mode in open(2)
996 * \param param stripe pattern of the newly created directory
998 * \retval 0 on success
999 * \retval negative errno on failure
1001 int llapi_dir_create(const char *name, mode_t mode,
1002 const struct llapi_stripe_param *param)
1004 struct lmv_user_md *lmu = NULL;
1005 size_t lmu_size = sizeof(*lmu);
1006 struct obd_ioctl_data data = { 0 };
1009 char *dirpath = NULL;
1010 char *namepath = NULL;
1015 rc = verify_dir_param(name, param);
1019 if (param->lsp_is_specific)
1020 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1021 LMV_USER_MAGIC_SPECIFIC);
1023 lmu = calloc(1, lmu_size);
1027 dirpath = strdup(name);
1033 namepath = strdup(name);
1040 param2lmu(lmu, param);
1042 filename = basename(namepath);
1043 dir = dirname(dirpath);
1045 data.ioc_inlbuf1 = (char *)filename;
1046 data.ioc_inllen1 = strlen(filename) + 1;
1047 data.ioc_inlbuf2 = (char *)lmu;
1048 data.ioc_inllen2 = lmu_size;
1049 data.ioc_type = mode;
1050 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
1052 llapi_error(LLAPI_MSG_ERROR, rc,
1053 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1058 fd = open(dir, O_DIRECTORY | O_RDONLY);
1061 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1065 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1066 char *errmsg = "stripe already set";
1069 if (errno != EEXIST && errno != EALREADY)
1070 errmsg = strerror(errno);
1072 llapi_err_noerrno(LLAPI_MSG_ERROR,
1073 "dirstripe error on '%s': %s", name, errmsg);
1084 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1085 int stripe_count, int stripe_pattern,
1086 const char *pool_name)
1088 const struct llapi_stripe_param param = {
1089 .lsp_stripe_count = stripe_count,
1090 .lsp_stripe_offset = stripe_offset,
1091 .lsp_stripe_pattern = stripe_pattern,
1092 .lsp_pool = (char *)pool_name
1095 return llapi_dir_create(name, mode, ¶m);
1098 int llapi_direntry_remove(char *dname)
1100 char *dirpath = NULL;
1101 char *namepath = NULL;
1107 dirpath = strdup(dname);
1108 namepath = strdup(dname);
1109 if (!dirpath || !namepath)
1112 filename = basename(namepath);
1114 dir = dirname(dirpath);
1116 fd = open(dir, O_DIRECTORY | O_RDONLY);
1119 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1124 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1125 char *errmsg = strerror(errno);
1126 llapi_err_noerrno(LLAPI_MSG_ERROR,
1127 "error on ioctl %#jx for '%s' (%d): %s",
1128 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1140 * Find the fsname, the full path, and/or an open fd.
1141 * Either the fsname or path must not be NULL
1143 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1146 char buf[PATH_MAX], mntdir[PATH_MAX];
1147 char *ptr, *ptr_end;
1149 int idx = 0, len = 0, mntlen, fd;
1152 /* get the mount point */
1153 fp = setmntent(PROC_MOUNTS, "r");
1156 llapi_error(LLAPI_MSG_ERROR, rc,
1157 "cannot retrieve filesystem mount point");
1161 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1164 if (!llapi_is_lustre_mnt(&mnt))
1167 if ((want & WANT_INDEX) && (idx++ != index))
1170 mntlen = strlen(mnt.mnt_dir);
1171 ptr = strchr(mnt.mnt_fsname, '/');
1172 while (ptr && *ptr == '/')
1174 /* thanks to the call to llapi_is_lustre_mnt() above,
1175 * we are sure that mnt.mnt_fsname contains ":/",
1176 * so ptr should never be NULL */
1180 while (*ptr_end != '/' && *ptr_end != '\0')
1183 /* Check the fsname for a match, if given */
1184 if (!(want & WANT_FSNAME) && fsname != NULL &&
1185 (strlen(fsname) > 0) &&
1186 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1189 /* If the path isn't set return the first one we find */
1190 if (path == NULL || strlen(path) == 0) {
1191 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1192 mntdir[strlen(mnt.mnt_dir)] = '\0';
1193 if ((want & WANT_FSNAME) && fsname != NULL) {
1194 strncpy(fsname, ptr, ptr_end - ptr);
1195 fsname[ptr_end - ptr] = '\0';
1199 /* Otherwise find the longest matching path */
1200 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1201 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1202 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1203 mntdir[strlen(mnt.mnt_dir)] = '\0';
1205 if ((want & WANT_FSNAME) && fsname != NULL) {
1206 strncpy(fsname, ptr, ptr_end - ptr);
1207 fsname[ptr_end - ptr] = '\0';
1216 if ((want & WANT_PATH) && path != NULL) {
1217 strncpy(path, mntdir, strlen(mntdir));
1218 path[strlen(mntdir)] = '\0';
1220 if (want & WANT_FD) {
1221 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1224 llapi_error(LLAPI_MSG_ERROR, rc,
1225 "cannot open '%s': %s", mntdir,
1232 } else if (want & WANT_ERROR)
1233 llapi_err_noerrno(LLAPI_MSG_ERROR,
1234 "'%s' not on a mounted Lustre filesystem",
1235 (want & WANT_PATH) ? fsname : path);
1240 * search lustre mounts
1242 * Calling this function will return to the user the mount point, mntdir, and
1243 * the file system name, fsname, if the user passed a buffer to this routine.
1245 * The user inputs are pathname and index. If the pathname is supplied then
1246 * the value of the index will be ignored. The pathname will return data if
1247 * the pathname is located on a lustre mount. Index is used to pick which
1248 * mount point you want in the case of multiple mounted lustre file systems.
1249 * See function lfs_osts in lfs.c for an example of the index use.
1251 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1254 int want = WANT_PATH, idx = -1;
1256 if (!pathname || pathname[0] == '\0') {
1260 strcpy(mntdir, pathname);
1263 want |= WANT_FSNAME;
1264 return get_root_path(want, fsname, NULL, mntdir, idx);
1267 /* Given a path, find the corresponding Lustre fsname */
1268 int llapi_search_fsname(const char *pathname, char *fsname)
1273 path = realpath(pathname, NULL);
1275 char tmp[PATH_MAX - 1];
1281 if (pathname[0] != '/') {
1282 /* Need an absolute path, but realpath() only works for
1283 * pathnames that actually exist. We go through the
1284 * extra hurdle of dirname(getcwd() + pathname) in
1285 * case the relative pathname contains ".." in it. */
1286 char realpath[PATH_MAX - 1];
1288 if (getcwd(realpath, sizeof(realpath) - 2) == NULL) {
1290 llapi_error(LLAPI_MSG_ERROR, rc,
1291 "cannot get current working directory");
1295 rc = snprintf(tmp, sizeof(tmp), "%s/", realpath);
1296 if (rc >= sizeof(tmp)) {
1298 llapi_error(LLAPI_MSG_ERROR, rc,
1299 "invalid parent path '%s'",
1305 rc = snprintf(buf, sizeof(buf), "%s%s", tmp, pathname);
1306 if (rc >= sizeof(buf)) {
1308 llapi_error(LLAPI_MSG_ERROR, rc,
1309 "invalid path '%s'", pathname);
1312 path = realpath(buf, NULL);
1314 ptr = strrchr(buf, '/');
1316 llapi_error(LLAPI_MSG_ERROR |
1317 LLAPI_MSG_NO_ERRNO, 0,
1318 "cannot resolve path '%s'",
1323 path = realpath(buf, NULL);
1326 llapi_error(LLAPI_MSG_ERROR, rc,
1327 "cannot resolve path '%s'",
1333 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1338 int llapi_search_rootpath(char *pathname, const char *fsname)
1340 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1343 int llapi_getname(const char *path, char *buf, size_t size)
1345 struct obd_uuid uuid_buf;
1346 char *uuid = uuid_buf.uuid;
1349 memset(&uuid_buf, 0, sizeof(uuid_buf));
1350 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1354 /* We want to turn lustre-clilov-ffff88002738bc00 into
1355 * lustre-ffff88002738bc00. */
1357 nr = snprintf(buf, size, "%.*s-%s",
1358 (int) (strlen(uuid) - 24), uuid,
1359 uuid + strlen(uuid) - 16);
1368 * Get the list of pool members.
1369 * \param poolname string of format \<fsname\>.\<poolname\>
1370 * \param members caller-allocated array of char*
1371 * \param list_size size of the members array
1372 * \param buffer caller-allocated buffer for storing OST names
1373 * \param buffer_size size of the buffer
1375 * \return number of members retrieved for this pool
1376 * \retval -error failure
1378 int llapi_get_poolmembers(const char *poolname, char **members,
1379 int list_size, char *buffer, int buffer_size)
1381 char fsname[PATH_MAX];
1390 /* name is FSNAME.POOLNAME */
1391 if (strlen(poolname) >= sizeof(fsname))
1394 snprintf(fsname, sizeof(fsname), "%s", poolname);
1395 pool = strchr(fsname, '.');
1402 rc = poolpath(&pathname, fsname, NULL);
1404 llapi_error(LLAPI_MSG_ERROR, rc,
1405 "Lustre filesystem '%s' not found",
1410 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1411 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1412 cfs_free_param_data(&pathname);
1413 if (rc >= sizeof(buf))
1415 fd = fopen(buf, "r");
1418 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1423 while (fgets(buf, sizeof(buf), fd) != NULL) {
1424 if (nb_entries >= list_size) {
1428 buf[sizeof(buf) - 1] = '\0';
1430 tmp = strchr(buf, '\n');
1433 if (used + strlen(buf) + 1 > buffer_size) {
1438 strcpy(buffer + used, buf);
1439 members[nb_entries] = buffer + used;
1440 used += strlen(buf) + 1;
1450 * Get the list of pools in a filesystem.
1451 * \param name filesystem name or path
1452 * \param poollist caller-allocated array of char*
1453 * \param list_size size of the poollist array
1454 * \param buffer caller-allocated buffer for storing pool names
1455 * \param buffer_size size of the buffer
1457 * \return number of pools retrieved for this filesystem
1458 * \retval -error failure
1460 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1461 char *buffer, int buffer_size)
1463 char rname[PATH_MAX];
1468 struct dirent *pool;
1470 unsigned int nb_entries = 0;
1471 unsigned int used = 0;
1474 /* initialize output array */
1475 for (i = 0; i < list_size; i++)
1478 /* is name a pathname ? */
1479 ptr = strchr(name, '/');
1481 /* only absolute pathname is supported */
1485 if (!realpath(name, rname)) {
1487 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1492 fsname = strdup(rname);
1496 rc = poolpath(&pathname, NULL, rname);
1498 /* name is FSNAME */
1499 fsname = strdup(name);
1502 rc = poolpath(&pathname, fsname, NULL);
1505 llapi_error(LLAPI_MSG_ERROR, rc,
1506 "Lustre filesystem '%s' not found", name);
1510 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1511 dir = opendir(pathname.gl_pathv[0]);
1514 llapi_error(LLAPI_MSG_ERROR, rc,
1515 "Could not open pool list for '%s'",
1522 pool = readdir(dir);
1528 /* ignore . and .. */
1529 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1532 /* check output bounds */
1533 if (nb_entries >= list_size) {
1538 /* +2 for '.' and final '\0' */
1539 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1545 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1546 poollist[nb_entries] = buffer + used;
1547 used += strlen(pool->d_name) + strlen(fsname) + 2;
1553 llapi_error(LLAPI_MSG_ERROR, rc,
1554 "Error reading pool list for '%s'", name);
1557 cfs_free_param_data(&pathname);
1560 return rc != 0 ? rc : nb_entries;
1563 /* wrapper for lfs.c and obd.c */
1564 int llapi_poollist(const char *name)
1566 /* list of pool names (assume that pool count is smaller
1568 char **list, *buffer = NULL, *fsname = (char *)name;
1569 char *poolname = NULL, *tmp = NULL, data[16];
1570 enum param_filter type = FILTER_BY_PATH;
1571 int obdcount, bufsize, rc, nb, i;
1576 if (name[0] != '/') {
1577 fsname = strdup(name);
1581 poolname = strchr(fsname, '.');
1584 type = FILTER_BY_FS_NAME;
1587 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1588 data, sizeof(data));
1591 obdcount = atoi(data);
1593 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1594 * and also an array to store the pointers for all that
1595 * allocated space. */
1597 bufsize = sizeof(struct obd_uuid) * obdcount;
1598 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1599 if (buffer == NULL) {
1603 list = (char **) (buffer + bufsize);
1606 /* name is a path or fsname */
1607 nb = llapi_get_poollist(name, list, obdcount,
1610 /* name is a pool name (<fsname>.<poolname>) */
1611 nb = llapi_get_poolmembers(name, list, obdcount,
1615 if (nb == -EOVERFLOW) {
1618 goto retry_get_pools;
1621 for (i = 0; i < nb; i++)
1622 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1623 rc = (nb < 0 ? nb : 0);
1627 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1632 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1633 void *data, struct dirent64 *de);
1635 #define OBD_NOT_FOUND (-1)
1637 static int common_param_init(struct find_param *param, char *path)
1639 int lum_size = get_mds_md_size(path);
1644 if (lum_size < PATH_MAX + 1)
1645 lum_size = PATH_MAX + 1;
1647 param->fp_lum_size = lum_size;
1648 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1649 if (param->fp_lmd == NULL) {
1650 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1651 "error: allocation of %zu bytes for ioctl",
1652 sizeof(lstat_t) + param->fp_lum_size);
1656 param->fp_lmv_stripe_count = 256;
1657 param->fp_lmv_md = calloc(1,
1658 lmv_user_md_size(param->fp_lmv_stripe_count,
1660 if (param->fp_lmv_md == NULL) {
1661 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1662 "error: allocation of %d bytes for ioctl",
1663 lmv_user_md_size(param->fp_lmv_stripe_count,
1668 param->fp_got_uuids = 0;
1669 param->fp_obd_indexes = NULL;
1670 param->fp_obd_index = OBD_NOT_FOUND;
1671 if (!param->fp_migrate)
1672 param->fp_mdt_index = OBD_NOT_FOUND;
1676 static void find_param_fini(struct find_param *param)
1678 if (param->fp_obd_indexes)
1679 free(param->fp_obd_indexes);
1682 free(param->fp_lmd);
1684 if (param->fp_lmv_md)
1685 free(param->fp_lmv_md);
1688 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1689 struct dirent64 *de)
1691 struct find_param *param = data;
1697 /* set errno upon failure */
1698 static DIR *opendir_parent(const char *path)
1704 path_copy = strdup(path);
1705 if (path_copy == NULL)
1708 parent_path = dirname(path_copy);
1709 parent = opendir(parent_path);
1715 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1720 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1721 if (param->fp_get_default_lmv)
1722 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1724 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1726 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1727 if (errno == E2BIG && ret != 0) {
1731 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1732 if (stripe_count <= param->fp_lmv_stripe_count)
1735 free(param->fp_lmv_md);
1736 param->fp_lmv_stripe_count = stripe_count;
1737 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1738 param->fp_lmv_md = malloc(lmv_size);
1739 if (param->fp_lmv_md == NULL) {
1740 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1741 "error: allocation of %d bytes for ioctl",
1742 lmv_user_md_size(param->fp_lmv_stripe_count,
1751 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1752 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1754 struct lov_user_mds_data *lmd = lmdbuf;
1755 lstat_t *st = &lmd->lmd_st;
1758 if (parent_fd < 0 && dir_fd < 0)
1760 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1764 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1765 * and returns struct lov_user_mds_data, while
1766 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1768 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1769 LL_IOC_LOV_GETSTRIPE,
1771 } else if (parent_fd >= 0) {
1772 char *fname = strrchr(path, '/');
1774 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1775 * the parent directory) and returns struct lov_user_mds_data,
1776 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1778 * This avoids opening, locking, and closing each file on the
1779 * client if that is not needed. Multiple of these ioctl() can
1780 * be done on the parent dir with a single open for all
1781 * files in that directory, and it also doesn't pollute the
1782 * client dcache with millions of dentries when traversing
1783 * a large filesystem.
1785 fname = (fname == NULL ? path : fname + 1);
1787 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1790 else if (ret >= lmdlen || ret++ == 0)
1793 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1794 IOC_MDC_GETFILEINFO :
1795 IOC_MDC_GETFILESTRIPE, lmdbuf);
1798 if (ret && type == GET_LMD_INFO) {
1799 if (errno == ENOTTY) {
1800 /* ioctl is not supported, it is not a lustre fs.
1801 * Do the regular lstat(2) instead.
1803 ret = lstat_f(path, st);
1806 llapi_error(LLAPI_MSG_ERROR, ret,
1807 "error: %s: lstat failed for %s",
1810 } else if (errno == ENOENT) {
1812 llapi_error(LLAPI_MSG_WARN, ret,
1813 "warning: %s does not exist", path);
1814 } else if (errno != EISDIR && errno != ENODATA) {
1816 llapi_error(LLAPI_MSG_ERROR, ret,
1817 "%s ioctl failed for %s.",
1818 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1819 "IOC_MDC_GETFILEINFO", path);
1826 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1827 int lmdlen, enum get_lmd_info_type type)
1833 parent_fd = dirfd(parent);
1835 dir_fd = dirfd(dir);
1837 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1840 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1841 semantic_func_t sem_init,
1842 semantic_func_t sem_fini, void *data,
1843 struct dirent64 *de)
1845 struct find_param *param = (struct find_param *)data;
1846 struct dirent64 *dent;
1854 if (!d && errno != ENOTDIR) {
1856 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1859 } else if (!d && !parent) {
1860 /* ENOTDIR. Open the parent dir. */
1861 p = opendir_parent(path);
1868 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1874 while ((dent = readdir64(d)) != NULL) {
1877 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1881 if ((len + dent->d_reclen + 2) > size) {
1882 llapi_err_noerrno(LLAPI_MSG_ERROR,
1883 "error: %s: string buffer too small",
1888 strcat(path, dent->d_name);
1890 if (dent->d_type == DT_UNKNOWN) {
1891 lstat_t *st = ¶m->fp_lmd->lmd_st;
1893 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1894 param->fp_lum_size, GET_LMD_INFO);
1896 dent->d_type = IFTODT(st->st_mode);
1903 switch (dent->d_type) {
1905 llapi_err_noerrno(LLAPI_MSG_ERROR,
1906 "error: %s: '%s' is UNKNOWN type %d",
1907 __func__, dent->d_name, dent->d_type);
1910 rc = llapi_semantic_traverse(path, size, d, sem_init,
1911 sem_fini, data, dent);
1912 if (rc != 0 && ret == 0)
1918 rc = sem_init(path, d, NULL, data, dent);
1919 if (rc < 0 && ret == 0)
1922 if (sem_fini && rc == 0)
1923 sem_fini(path, d, NULL, data, dent);
1931 sem_fini(path, parent, &d, data, de);
1940 static int param_callback(char *path, semantic_func_t sem_init,
1941 semantic_func_t sem_fini, struct find_param *param)
1943 int ret, len = strlen(path);
1946 if (len > PATH_MAX) {
1948 llapi_error(LLAPI_MSG_ERROR, ret,
1949 "Path name '%s' is too long", path);
1953 buf = (char *)malloc(PATH_MAX + 1);
1957 snprintf(buf, PATH_MAX + 1, "%s", path);
1958 ret = common_param_init(param, buf);
1962 param->fp_depth = 0;
1964 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1965 sem_fini, param, NULL);
1967 find_param_fini(param);
1969 return ret < 0 ? ret : 0;
1972 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1974 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1978 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
1983 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1985 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1988 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1993 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1997 fd = open(path, O_RDONLY | O_NONBLOCK);
2000 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2004 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2010 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2014 fd = open(path, O_RDONLY | O_NONBLOCK);
2017 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2021 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2033 * If uuidp is NULL, return the number of available obd uuids.
2034 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2035 * there are more OSTs than allocated to uuidp, then an error is returned with
2036 * the ost_count set to number of available obd uuids.
2038 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2039 int *ost_count, enum tgt_type type)
2041 char buf[PATH_MAX], format[32];
2042 int rc = 0, index = 0;
2043 struct obd_uuid name;
2047 /* Get the lov name */
2048 if (type == LOV_TYPE)
2049 rc = llapi_file_fget_lov_uuid(fd, &name);
2051 rc = llapi_file_fget_lmv_uuid(fd, &name);
2055 /* Now get the ost uuids */
2056 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2057 FILTER_BY_EXACT, "target_obd", ¶m);
2061 fp = fopen(param.gl_pathv[0], "r");
2064 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2069 snprintf(format, sizeof(format),
2070 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2071 while (fgets(buf, sizeof(buf), fp) != NULL) {
2072 if (uuidp && (index < *ost_count)) {
2073 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2081 if (uuidp && (index > *ost_count))
2086 cfs_free_param_data(¶m);
2090 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2092 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2095 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2100 root = open(mnt, O_RDONLY | O_DIRECTORY);
2103 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2108 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2116 /* Check if user specified value matches a real uuid. Ignore _UUID,
2117 * -osc-4ba41334, other trailing gunk in comparison.
2118 * @param real_uuid ends in "_UUID"
2119 * @param search_uuid may or may not end in "_UUID"
2121 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2123 int cmplen = strlen(real_uuid);
2124 int searchlen = strlen(search_uuid);
2126 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2128 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2131 /* The UUIDs may legitimately be different lengths, if
2132 * the system was upgraded from an older version. */
2133 if (cmplen != searchlen)
2136 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2139 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2140 * returned in param->fp_obd_index */
2141 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2143 struct obd_uuid obd_uuid;
2150 if (param->fp_got_uuids)
2153 /* Get the lov/lmv name */
2154 if (param->fp_get_lmv)
2155 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2157 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2159 if (rc != -ENOTTY) {
2160 llapi_error(LLAPI_MSG_ERROR, rc,
2161 "error: can't get %s name: %s",
2162 param->fp_get_lmv ? "lmv" : "lov",
2170 param->fp_got_uuids = 1;
2172 /* Now get the ost uuids */
2173 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2174 obd_uuid.uuid, FILTER_BY_EXACT,
2175 "target_obd", ¶m_data);
2179 fp = fopen(param_data.gl_pathv[0], "r");
2182 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2183 param_data.gl_pathv[0]);
2187 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2188 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2189 param->fp_get_lmv ? "MDTS" : "OBDS");
2191 snprintf(format, sizeof(format),
2192 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2193 while (fgets(buf, sizeof(buf), fp) != NULL) {
2196 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2199 if (param->fp_obd_uuid) {
2200 if (llapi_uuid_match(obd_uuid.uuid,
2201 param->fp_obd_uuid->uuid)) {
2202 param->fp_obd_index = index;
2205 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2206 /* Print everything */
2207 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2210 param->fp_obds_printed = 1;
2214 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2215 llapi_err_noerrno(LLAPI_MSG_ERROR,
2216 "error: %s: unknown obduuid: %s",
2217 __func__, param->fp_obd_uuid->uuid);
2221 cfs_free_param_data(¶m_data);
2225 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2226 * obd index for all these obduuids will be returned in
2227 * param->fp_obd_indexes */
2228 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2229 int num_obds, int **obdindexes, int *obdindex,
2232 int ret, obdcount, obd_valid = 0, obdnum;
2234 struct obd_uuid *uuids = NULL;
2238 if (type == LOV_TYPE)
2239 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2241 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2245 obdcount = atoi(buf);
2246 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2251 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2253 if (ret == -EOVERFLOW) {
2254 struct obd_uuid *uuids_temp;
2256 uuids_temp = realloc(uuids, obdcount *
2257 sizeof(struct obd_uuid));
2258 if (uuids_temp != NULL) {
2260 goto retry_get_uuids;
2265 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2269 indexes = malloc(num_obds * sizeof(*obdindex));
2270 if (indexes == NULL) {
2275 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2278 /* The user may have specified a simple index */
2279 i = strtol(obduuids[obdnum].uuid, &end, 0);
2280 if (end && *end == '\0' && i < obdcount) {
2281 indexes[obdnum] = i;
2284 for (i = 0; i < obdcount; i++) {
2285 if (llapi_uuid_match(uuids[i].uuid,
2286 obduuids[obdnum].uuid)) {
2287 indexes[obdnum] = i;
2293 if (i >= obdcount) {
2294 indexes[obdnum] = OBD_NOT_FOUND;
2295 llapi_err_noerrno(LLAPI_MSG_ERROR,
2296 "invalid obduuid '%s'",
2297 obduuids[obdnum].uuid);
2303 *obdindex = OBD_NOT_FOUND;
2305 *obdindex = obd_valid;
2307 *obdindexes = indexes;
2315 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2319 if (param->fp_mdt_uuid) {
2320 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2322 ¶m->fp_mdt_indexes,
2323 ¶m->fp_mdt_index, LMV_TYPE);
2328 if (param->fp_obd_uuid) {
2329 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2331 ¶m->fp_obd_indexes,
2332 ¶m->fp_obd_index, LOV_TYPE);
2337 param->fp_got_uuids = 1;
2342 int llapi_ostlist(char *path, struct find_param *param)
2347 fd = open(path, O_RDONLY | O_DIRECTORY);
2351 ret = setup_obd_uuid(fd, path, param);
2358 * Tries to determine the default stripe attributes for a given filesystem. The
2359 * filesystem to check should be specified by fsname, or will be determined
2362 static int sattr_get_defaults(const char *const fsname,
2363 unsigned int *scount,
2364 unsigned int *ssize,
2365 unsigned int *soffset)
2371 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2372 "stripecount", val, sizeof(val));
2375 *scount = atoi(val);
2379 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2380 "stripesize", val, sizeof(val));
2387 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2388 "stripeoffset", val, sizeof(val));
2391 *soffset = atoi(val);
2398 * Tries to gather the default stripe attributes for a given filesystem. If
2399 * the attributes can be determined, they are cached for easy retreival the
2400 * next time they are needed. Only a single filesystem's attributes are
2403 int sattr_cache_get_defaults(const char *const fsname,
2404 const char *const pathname, unsigned int *scount,
2405 unsigned int *ssize, unsigned int *soffset)
2408 char fsname[PATH_MAX + 1];
2409 unsigned int stripecount;
2410 unsigned int stripesize;
2411 unsigned int stripeoffset;
2417 char fsname_buf[PATH_MAX + 1];
2418 unsigned int tmp[3];
2420 if (fsname == NULL) {
2421 rc = llapi_search_fsname(pathname, fsname_buf);
2425 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2428 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2430 * Ensure all 3 sattrs (count, size, and offset) are
2431 * successfully retrieved and stored in tmp before writing to
2434 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2438 cache.stripecount = tmp[0];
2439 cache.stripesize = tmp[1];
2440 cache.stripeoffset = tmp[2];
2441 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2445 *scount = cache.stripecount;
2447 *ssize = cache.stripesize;
2449 *soffset = cache.stripeoffset;
2454 static char *layout2name(__u32 layout_pattern)
2456 if (layout_pattern == LOV_PATTERN_MDT)
2458 else if (layout_pattern == LOV_PATTERN_RAID0)
2460 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2466 enum lov_dump_flags {
2467 LDF_IS_DIR = 0x0001,
2468 LDF_IS_RAW = 0x0002,
2469 LDF_INDENT = 0x0004,
2470 LDF_SKIP_OBJS = 0x0008,
2474 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2475 struct lov_user_ost_data_v1 *objects,
2476 int verbose, int depth, char *pool_name,
2477 enum lov_dump_flags flags)
2479 bool is_dir = flags & LDF_IS_DIR;
2480 bool is_raw = flags & LDF_IS_RAW;
2481 bool indent = flags & LDF_INDENT;
2482 bool yaml = flags & LDF_YAML;
2483 bool skip_objs = flags & LDF_SKIP_OBJS;
2484 char *prefix = is_dir ? "" : "lmm_";
2485 char *separator = "";
2486 char *space = indent ? " " : "";
2489 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2490 lmm_oi_set_seq(&lum->lmm_oi, 0);
2491 if (!indent && (verbose & VERBOSE_DETAIL))
2492 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2495 if (!yaml && !indent && depth && path &&
2496 ((verbose != VERBOSE_OBJID) || !is_dir))
2497 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2499 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2500 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2501 space, prefix, lum->lmm_magic);
2502 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2504 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2505 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2507 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2509 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2514 if (verbose & ~VERBOSE_DFID)
2515 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2517 /* This needs a bit of hand-holding since old 1.x lmm_oi
2518 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2519 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2520 * a real FID. Ideally the 2.x code would have stored this
2521 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2522 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2523 * worked properly (especially since IGIF FIDs use mds_inum as
2524 * the FID SEQ), but unfortunately that didn't happen.
2526 * Print it to look like an IGIF FID, even though the fields
2527 * are reversed on disk, so that it makes sense to userspace.
2529 * Don't use ostid_id() and ostid_seq(), since they assume the
2530 * oi_fid fields are in the right order. This is why there are
2531 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2533 * For newer layout types hopefully this will be a real FID. */
2534 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2535 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2536 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2537 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2538 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2540 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2543 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2547 if (verbose & VERBOSE_COUNT) {
2548 if (verbose & ~VERBOSE_COUNT)
2549 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2552 if (!is_raw && lum->lmm_stripe_count == 0 &&
2553 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2554 unsigned int scount;
2555 rc = sattr_cache_get_defaults(NULL, path,
2559 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2562 llapi_error(LLAPI_MSG_ERROR, rc,
2563 "Cannot determine default"
2566 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2567 lum->lmm_stripe_count ==
2568 (typeof(lum->lmm_stripe_count))(-1)
2569 ? -1 : lum->lmm_stripe_count);
2572 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2573 (__s16)lum->lmm_stripe_count);
2575 if (!yaml && is_dir)
2581 if (verbose & VERBOSE_SIZE) {
2582 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2583 if (verbose & ~VERBOSE_SIZE)
2584 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2586 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2588 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2591 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2593 llapi_error(LLAPI_MSG_ERROR, rc,
2594 "Cannot determine default"
2597 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2598 lum->lmm_stripe_size);
2600 if (!yaml && is_dir)
2606 if ((verbose & VERBOSE_LAYOUT)) {
2607 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2608 if (verbose & ~VERBOSE_LAYOUT)
2609 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2611 if (lov_pattern_supported(lum->lmm_pattern))
2612 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2613 layout2name(lum->lmm_pattern));
2615 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2616 separator = (!yaml && is_dir) ? " " : "\n";
2619 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2620 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2621 if (verbose & ~VERBOSE_GENERATION)
2622 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2624 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2625 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2629 if (verbose & VERBOSE_OFFSET) {
2630 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2631 if (verbose & ~VERBOSE_OFFSET)
2632 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2634 if (is_dir || skip_objs)
2635 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2636 lum->lmm_stripe_offset ==
2637 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2638 lum->lmm_stripe_offset);
2639 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2640 llapi_printf(LLAPI_MSG_NORMAL, "0");
2642 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2643 objects[0].l_ost_idx);
2644 if (!yaml && is_dir)
2650 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2651 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2652 if (verbose & ~VERBOSE_POOL)
2653 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2655 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2656 if (!yaml && is_dir)
2662 if (strlen(separator) != 0)
2663 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2666 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2667 struct lov_user_ost_data_v1 *objects,
2668 char *path, int obdindex, int depth,
2669 int header, enum lov_dump_flags flags)
2671 bool is_dir = flags & LDF_IS_DIR;
2672 bool indent = flags & LDF_INDENT;
2673 bool skip_objs = flags & LDF_SKIP_OBJS;
2674 bool yaml = flags & LDF_YAML;
2675 bool obdstripe = obdindex == OBD_NOT_FOUND;
2678 if (!obdstripe && !skip_objs) {
2679 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2680 if (obdindex == objects[i].l_ost_idx) {
2690 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2693 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2694 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2695 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2696 char *space = " - ";
2699 llapi_printf(LLAPI_MSG_NORMAL,
2700 "%6slmm_objects:\n", " ");
2702 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2704 llapi_printf(LLAPI_MSG_NORMAL,
2705 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2707 for (i = 0; i < lum->lmm_stripe_count; i++) {
2708 int idx = objects[i].l_ost_idx;
2709 long long oid = ostid_id(&objects[i].l_ost_oi);
2710 long long gr = ostid_seq(&objects[i].l_ost_oi);
2712 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2716 struct lu_fid fid = { 0 };
2718 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2719 llapi_printf(LLAPI_MSG_NORMAL,
2720 "%sl_ost_idx: %d\n", space, idx);
2721 llapi_printf(LLAPI_MSG_NORMAL,
2722 "%8sl_fid: "DFID_NOBRACE"\n",
2724 } else if (indent) {
2725 struct lu_fid fid = { 0 };
2727 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2728 llapi_printf(LLAPI_MSG_NORMAL,
2729 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2730 space, i, idx, PFID(&fid));
2733 sprintf(fmt, "%s%s%s\n",
2734 "\t%6u\t%14llu\t%#13llx\t",
2735 (fid_seq_is_rsvd(gr) ||
2736 fid_seq_is_mdt0(gr)) ?
2737 "%14llu" : "%#14llx", "%s");
2738 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2740 obdindex == idx ? " *" : "");
2744 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2747 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2748 char *path, int obdindex, int depth, int verbose,
2749 enum lov_dump_flags flags)
2751 struct lmv_user_mds_data *objects = lum->lum_objects;
2752 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2753 char *separator = "";
2754 bool yaml = flags & LDF_YAML;
2755 bool obdstripe = false;
2758 if (obdindex != OBD_NOT_FOUND) {
2759 if (lum->lum_stripe_count == 0) {
2760 if (obdindex == lum->lum_stripe_offset)
2763 for (i = 0; i < lum->lum_stripe_count; i++) {
2764 if (obdindex == objects[i].lum_mds) {
2765 llapi_printf(LLAPI_MSG_NORMAL,
2780 /* show all information default */
2782 if (lum->lum_magic == LMV_USER_MAGIC)
2783 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2784 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2786 verbose = VERBOSE_OBJID;
2789 if (depth && path && ((verbose != VERBOSE_OBJID)))
2790 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2792 if (verbose & VERBOSE_COUNT) {
2793 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2794 if (verbose & ~VERBOSE_COUNT)
2795 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2796 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2797 (int)lum->lum_stripe_count);
2798 if ((verbose & VERBOSE_OFFSET) && !yaml)
2804 if (verbose & VERBOSE_OFFSET) {
2805 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2806 if (verbose & ~VERBOSE_OFFSET)
2807 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2808 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2809 (int)lum->lum_stripe_offset);
2810 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2816 if (verbose & VERBOSE_HASH_TYPE) {
2817 unsigned int type = lum->lum_hash_type;
2819 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2820 if (verbose & ~VERBOSE_HASH_TYPE)
2821 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2822 if (type < LMV_HASH_TYPE_MAX)
2823 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2824 mdt_hash_name[type]);
2826 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2831 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2832 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2833 if (lum->lum_stripe_count > 0)
2834 llapi_printf(LLAPI_MSG_NORMAL,
2835 "mdtidx\t\t FID[seq:oid:ver]\n");
2836 for (i = 0; i < lum->lum_stripe_count; i++) {
2837 int idx = objects[i].lum_mds;
2838 struct lu_fid *fid = &objects[i].lum_fid;
2839 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2840 llapi_printf(LLAPI_MSG_NORMAL,
2841 "%6u\t\t "DFID"\t\t%s\n",
2843 obdindex == idx ? " *" : "");
2848 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2849 pool_name[0] != '\0') {
2850 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2851 if (verbose & ~VERBOSE_POOL)
2852 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2854 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2858 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2859 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2862 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2863 enum lov_dump_flags flags)
2865 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2866 int depth = param->fp_max_depth;
2867 int verbose = param->fp_verbose;
2868 bool yaml = flags & LDF_YAML;
2870 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2871 !(flags & LDF_IS_DIR)) && !yaml)
2872 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2874 if (verbose & VERBOSE_DETAIL) {
2875 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2876 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2877 " ", comp_v1->lcm_magic);
2878 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2879 " ", comp_v1->lcm_size);
2880 if (flags & LDF_IS_DIR)
2881 llapi_printf(LLAPI_MSG_NORMAL,
2882 "%2slcm_flags: %s\n", " ",
2883 comp_v1->lcm_mirror_count > 0 ?
2886 llapi_printf(LLAPI_MSG_NORMAL,
2887 "%2slcm_flags: %s\n", " ",
2888 llapi_layout_flags_string(comp_v1->lcm_flags));
2891 if (verbose & VERBOSE_GENERATION) {
2892 if (verbose & ~VERBOSE_GENERATION)
2893 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2895 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2898 if (verbose & VERBOSE_MIRROR_COUNT) {
2899 if (verbose & ~VERBOSE_MIRROR_COUNT)
2900 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2902 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2903 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2904 comp_v1->lcm_mirror_count + 1 : 1);
2907 if (verbose & VERBOSE_COMP_COUNT) {
2908 if (verbose & ~VERBOSE_COMP_COUNT)
2909 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2911 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2912 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2913 comp_v1->lcm_entry_count : 0);
2916 if (verbose & VERBOSE_DETAIL && !yaml)
2917 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2920 static void lcme_flags2str(__u32 comp_flags)
2926 llapi_printf(LLAPI_MSG_NORMAL, "0");
2929 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2930 if (comp_flags & comp_flags_table[i].cfn_flag) {
2932 llapi_printf(LLAPI_MSG_NORMAL, ",");
2933 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2934 comp_flags_table[i].cfn_name);
2935 comp_flags &= ~comp_flags_table[i].cfn_flag;
2941 llapi_printf(LLAPI_MSG_NORMAL, ",");
2942 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2946 static void lov_dump_comp_v1_entry(struct find_param *param,
2947 enum lov_dump_flags flags, int index)
2949 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2950 struct lov_comp_md_entry_v1 *entry;
2951 char *separator = "";
2952 int verbose = param->fp_verbose;
2953 bool yaml = flags & LDF_YAML;
2955 entry = &comp_v1->lcm_entries[index];
2958 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2960 if (verbose & VERBOSE_COMP_ID) {
2961 if (verbose & VERBOSE_DETAIL && !yaml)
2962 llapi_printf(LLAPI_MSG_NORMAL,
2963 "%slcme_id: ", " - ");
2964 else if (verbose & ~VERBOSE_COMP_ID)
2965 llapi_printf(LLAPI_MSG_NORMAL,
2966 "%4slcme_id: ", " ");
2967 if (entry->lcme_id != LCME_ID_INVAL)
2968 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2970 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2974 if (verbose & VERBOSE_MIRROR_ID) {
2975 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2976 if (verbose & ~VERBOSE_MIRROR_ID)
2977 llapi_printf(LLAPI_MSG_NORMAL,
2978 "%4slcme_mirror_id: ", " ");
2979 if (entry->lcme_id != LCME_ID_INVAL)
2980 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2981 mirror_id_of(entry->lcme_id));
2983 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2987 if (verbose & VERBOSE_COMP_FLAGS) {
2988 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2989 if (verbose & ~VERBOSE_COMP_FLAGS)
2990 llapi_printf(LLAPI_MSG_NORMAL,
2991 "%4slcme_flags: ", " ");
2992 lcme_flags2str(entry->lcme_flags);
2996 if (verbose & VERBOSE_COMP_START) {
2997 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2998 if (verbose & ~VERBOSE_COMP_START)
2999 llapi_printf(LLAPI_MSG_NORMAL,
3000 "%4slcme_extent.e_start: ", " ");
3001 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3002 entry->lcme_extent.e_start);
3006 if (verbose & VERBOSE_COMP_END) {
3007 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3008 if (verbose & ~VERBOSE_COMP_END)
3009 llapi_printf(LLAPI_MSG_NORMAL,
3010 "%4slcme_extent.e_end: ", " ");
3011 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3012 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3014 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3015 entry->lcme_extent.e_end);
3020 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3021 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3022 } else if (verbose & VERBOSE_DETAIL) {
3023 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3024 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3025 " ", entry->lcme_offset);
3026 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3027 " ", entry->lcme_size);
3028 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3030 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3034 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3035 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3037 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3038 * The table below gives the answers for the specified parameters (value and
3039 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3040 * --------------------------------------
3041 * 1 | file > limit; sign > 0 | -1 / -1 |
3042 * 2 | file = limit; sign > 0 | -1 / -1 |
3043 * 3 | file < limit; sign > 0 | ? / 1 |
3044 * 4 | file > limit; sign = 0 | -1 / -1 |
3045 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3046 * 6 | file < limit; sign = 0 | ? / -1 |
3047 * 7 | file > limit; sign < 0 | 1 / 1 |
3048 * 8 | file = limit; sign < 0 | ? / -1 |
3049 * 9 | file < limit; sign < 0 | ? / -1 |
3050 * --------------------------------------
3051 * Note: 5th actually means that the value is within the interval
3052 * (limit - margin, limit]. */
3053 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3054 int sign, int negopt, unsigned long long margin,
3060 /* Drop the fraction of margin (of days). */
3061 if (file + margin <= limit)
3063 } else if (sign == 0) {
3064 if (file <= limit && file + margin > limit)
3066 else if (file + margin <= limit)
3068 } else if (sign < 0) {
3075 return negopt ? ~ret + 1 : ret;
3078 static inline struct lov_user_md *
3079 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3081 return (struct lov_user_md *)((char *)comp_v1 +
3082 comp_v1->lcm_entries[ent_idx].lcme_offset);
3085 static inline struct lov_user_ost_data_v1 *
3086 lov_v1v3_objects(struct lov_user_md *v1)
3088 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3089 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3091 return v1->lmm_objects;
3095 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3097 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3098 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3099 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3101 pool_name[0] = '\0';
3105 print_last_init_comp(struct find_param *param)
3107 /* print all component info */
3108 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3111 /* print specific component info */
3112 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3113 param->fp_check_comp_start || param->fp_check_comp_end)
3119 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3123 if (param->fp_comp_end == LUSTRE_EOF) {
3124 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3125 match = end == LUSTRE_EOF ? 1 : -1;
3126 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3127 match = end == LUSTRE_EOF ? -1 : 1;
3128 else /* at least EOF */
3130 if (param->fp_exclude_comp_end)
3133 unsigned long long margin;
3135 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3136 match = find_value_cmp(end, param->fp_comp_end,
3137 param->fp_comp_end_sign,
3138 param->fp_exclude_comp_end, margin, 0);
3145 * An example of "getstripe -v" for a two components PFL file:
3148 * lcm_magic: 0x0BD60BD0
3152 * lcm_entry_count: 2
3156 * lcme_extent.e_start: 0
3157 * lcme_extent.e_end: 1048576
3161 * lmm_magic: 0x0BD10BD0
3162 * lmm_seq: 0x200000401
3163 * lmm_object_id: 0x1
3164 * lmm_fid: [0x200000401:0x1:0x0]
3165 * lmm_stripe_count: 1
3166 * lmm_stripe_size: 1048576
3167 * lmm_pattern: raid0
3169 * lmm_stripe_offset: 0
3171 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3175 * lcme_extent.e_start: 1048576
3176 * lcme_extent.e_end: EOF
3180 * lmm_magic: 0x0BD10BD0
3181 * lmm_seq: 0x200000401
3182 * lmm_object_id: 0x1
3183 * lmm_fid: [0x200000401:0x1:0x0]
3184 * lmm_stripe_count: 2
3185 * lmm_stripe_size: 1048576
3186 * lmm_pattern: raid0
3188 * lmm_stripe_offset: 1
3190 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3191 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3193 static void lov_dump_comp_v1(struct find_param *param, char *path,
3194 enum lov_dump_flags flags)
3196 struct lov_comp_md_entry_v1 *entry;
3197 struct lov_user_ost_data_v1 *objects;
3198 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3199 struct lov_user_md_v1 *v1;
3200 char pool_name[LOV_MAXPOOLNAME + 1];
3201 int obdindex = param->fp_obd_index;
3203 bool obdstripe = false;
3205 if (obdindex != OBD_NOT_FOUND) {
3206 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3207 i < comp_v1->lcm_entry_count; i++) {
3208 if (!(comp_v1->lcm_entries[i].lcme_flags &
3212 v1 = lov_comp_entry(comp_v1, i);
3213 objects = lov_v1v3_objects(v1);
3215 for (j = 0; j < v1->lmm_stripe_count; j++) {
3216 if (obdindex == objects[j].l_ost_idx) {
3229 lov_dump_comp_v1_header(param, path, flags);
3231 flags |= LDF_INDENT;
3233 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3234 entry = &comp_v1->lcm_entries[i];
3236 if (param->fp_check_comp_flags) {
3237 if (((param->fp_comp_flags & entry->lcme_flags) !=
3238 param->fp_comp_flags) ||
3239 (param->fp_comp_neg_flags & entry->lcme_flags))
3243 if (param->fp_check_comp_id &&
3244 param->fp_comp_id != entry->lcme_id)
3247 if (param->fp_check_comp_start) {
3248 match = find_value_cmp(entry->lcme_extent.e_start,
3249 param->fp_comp_start,
3250 param->fp_comp_start_sign,
3252 param->fp_comp_start_units, 0);
3257 if (param->fp_check_comp_end) {
3258 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3264 if (print_last_init_comp(param)) {
3266 * if part of stripe info is needed, we'd print only
3267 * the last instantiated component info.
3269 if (entry->lcme_flags & LCME_FL_INIT)
3275 if (entry->lcme_flags & LCME_FL_INIT) {
3276 if (obdindex != OBD_NOT_FOUND) {
3277 flags |= LDF_SKIP_OBJS;
3278 v1 = lov_comp_entry(comp_v1, i);
3279 objects = lov_v1v3_objects(v1);
3281 for (j = 0; j < v1->lmm_stripe_count; j++) {
3282 if (obdindex == objects[j].l_ost_idx) {
3283 flags &= ~LDF_SKIP_OBJS;
3288 flags &= ~LDF_SKIP_OBJS;
3291 flags |= LDF_SKIP_OBJS;
3294 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3296 lov_dump_comp_v1_entry(param, flags, i);
3298 v1 = lov_comp_entry(comp_v1, i);
3299 objects = lov_v1v3_objects(v1);
3300 lov_v1v3_pool_name(v1, pool_name);
3302 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3303 param->fp_max_depth, param->fp_verbose,
3306 if (print_last_init_comp(param)) {
3308 * directory layout contains only layout template, print the
3312 i = comp_v1->lcm_entry_count - 1;
3315 flags &= ~LDF_SKIP_OBJS;
3317 lov_dump_comp_v1_entry(param, flags, i);
3319 v1 = lov_comp_entry(comp_v1, i);
3320 objects = lov_v1v3_objects(v1);
3321 lov_v1v3_pool_name(v1, pool_name);
3323 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3324 param->fp_max_depth, param->fp_verbose,
3329 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3330 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3333 static inline bool has_any_comp_options(struct find_param *param)
3335 int verbose = param->fp_verbose;
3337 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3338 param->fp_check_comp_start || param->fp_check_comp_end ||
3339 param->fp_check_comp_flags)
3342 /* show full layout information, not component specific */
3343 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3346 return verbose & VERBOSE_COMP_OPTS;
3349 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3352 struct lov_user_md *lum = &orig->lmd_lmm;
3353 struct lov_user_mds_data *new;
3354 struct lov_comp_md_v1 *comp_v1;
3355 struct lov_comp_md_entry_v1 *ent;
3356 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3357 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3360 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3362 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3366 memcpy(new, orig, sizeof(lstat_t));
3368 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3369 comp_v1->lcm_magic = lum->lmm_magic;
3370 comp_v1->lcm_size = lum_off + lum_size;
3371 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3372 comp_v1->lcm_flags = 0;
3373 comp_v1->lcm_entry_count = 1;
3375 ent = &comp_v1->lcm_entries[0];
3377 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3378 ent->lcme_extent.e_start = 0;
3379 ent->lcme_extent.e_end = LUSTRE_EOF;
3380 ent->lcme_offset = lum_off;
3381 ent->lcme_size = lum_size;
3383 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3388 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3389 enum lov_dump_flags flags)
3391 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3393 if (has_any_comp_options(param)) {
3394 struct lov_user_mds_data *new_lmd, *orig_lmd;
3396 orig_lmd = param->fp_lmd;
3397 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3398 if (new_lmd != NULL) {
3399 param->fp_lmd = new_lmd;
3400 lov_dump_comp_v1(param, path, flags);
3401 param->fp_lmd = orig_lmd;
3407 if (magic == LOV_USER_MAGIC_V1) {
3408 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3409 param->fp_lmd->lmd_lmm.lmm_objects,
3410 path, param->fp_obd_index,
3411 param->fp_max_depth, param->fp_verbose,
3414 char pool_name[LOV_MAXPOOLNAME + 1];
3415 struct lov_user_ost_data_v1 *objects;
3416 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3418 snprintf(pool_name, sizeof(pool_name), "%s",
3419 lmmv3->lmm_pool_name);
3420 objects = lmmv3->lmm_objects;
3421 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3422 objects, path, param->fp_obd_index,
3423 param->fp_max_depth, param->fp_verbose,
3428 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3429 enum lov_dump_flags flags)
3433 if (param->fp_get_lmv || param->fp_get_default_lmv)
3434 magic = (__u32)param->fp_lmv_md->lum_magic;
3436 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3439 flags |= LDF_IS_RAW;
3444 case LOV_USER_MAGIC_V1:
3445 case LOV_USER_MAGIC_V3:
3446 lov_dump_plain_user_lmm(param, path, flags);
3449 case LMV_USER_MAGIC: {
3450 char pool_name[LOV_MAXPOOLNAME + 1];
3451 struct lmv_user_md *lum;
3453 lum = (struct lmv_user_md *)param->fp_lmv_md;
3454 snprintf(pool_name, sizeof(pool_name), "%s",
3455 lum->lum_pool_name);
3456 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3457 param->fp_max_depth, param->fp_verbose,
3461 case LOV_USER_MAGIC_COMP_V1:
3462 lov_dump_comp_v1(param, path, flags);
3465 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3466 "(expecting one of %#x %#x %#x %#x)\n",
3467 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3468 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3469 LMV_USER_MAGIC, LMV_MAGIC_V1);
3474 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3480 fname = strrchr(path, '/');
3482 /* It should be a file (or other non-directory) */
3483 if (fname == NULL) {
3484 dname = (char *)malloc(2);
3488 fname = (char *)path;
3490 dname = (char *)malloc(fname - path + 1);
3493 strncpy(dname, path, fname - path);
3494 dname[fname - path] = '\0';
3498 fd = open(dname, O_RDONLY | O_NONBLOCK);
3505 strcpy((char *)lum, fname);
3506 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3509 if (close(fd) == -1 && rc == 0)
3516 int llapi_file_lookup(int dirfd, const char *name)
3518 struct obd_ioctl_data data = { 0 };
3523 if (dirfd < 0 || name == NULL)
3526 data.ioc_version = OBD_IOCTL_VERSION;
3527 data.ioc_len = sizeof(data);
3528 data.ioc_inlbuf1 = (char *)name;
3529 data.ioc_inllen1 = strlen(name) + 1;
3531 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3533 llapi_error(LLAPI_MSG_ERROR, rc,
3534 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3539 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3545 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3546 * Return -1 or 1 if file timestamp does not or does match the given criteria
3547 * correspondingly. Return 0 if the MDS time is being checked and there are
3548 * attributes on OSTs and it is not yet clear if the timespamp matches.
3550 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3551 * updated timestamps. */
3552 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3557 /* Check if file is accepted. */
3558 if (param->fp_atime) {
3559 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3560 param->fp_asign, param->fp_exclude_atime,
3567 if (param->fp_mtime) {
3568 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3569 param->fp_msign, param->fp_exclude_mtime,
3574 /* If the previous check matches, but this one is not yet clear,
3575 * we should return 0 to do an RPC on OSTs. */
3580 if (param->fp_ctime) {
3581 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3582 param->fp_csign, param->fp_exclude_ctime,
3587 /* If the previous check matches, but this one is not yet clear,
3588 * we should return 0 to do an RPC on OSTs. */
3597 * Check whether the stripes matches the indexes user provided
3601 static int check_obd_match(struct find_param *param)
3603 struct lov_user_ost_data_v1 *objects;
3604 struct lov_comp_md_v1 *comp_v1 = NULL;
3605 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3606 lstat_t *st = ¶m->fp_lmd->lmd_st;
3607 int i, j, k, count = 1;
3609 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3612 if (!S_ISREG(st->st_mode))
3615 /* Only those files should be accepted, which have a
3616 * stripe on the specified OST. */
3617 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3618 comp_v1 = (struct lov_comp_md_v1 *)v1;
3619 count = comp_v1->lcm_entry_count;
3622 for (i = 0; i < count; i++) {
3624 v1 = lov_comp_entry(comp_v1, i);
3626 objects = lov_v1v3_objects(v1);
3628 for (j = 0; j < v1->lmm_stripe_count; j++) {
3629 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3632 for (k = 0; k < param->fp_num_obds; k++) {
3633 if (param->fp_obd_indexes[k] ==
3634 objects[j].l_ost_idx)
3635 return !param->fp_exclude_obd;
3640 return param->fp_exclude_obd;
3643 static int check_mdt_match(struct find_param *param)
3647 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3650 /* FIXME: For striped dir, we should get stripe information and check */
3651 for (i = 0; i < param->fp_num_mdts; i++) {
3652 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3653 return !param->fp_exclude_mdt;
3656 if (param->fp_exclude_mdt)
3663 * Check whether the obd is active or not, if it is
3664 * not active, just print the object affected by this
3667 static int print_failed_tgt(struct find_param *param, char *path, int type)
3669 struct obd_statfs stat_buf;
3670 struct obd_uuid uuid_buf;
3673 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3676 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3677 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3678 ret = llapi_obd_statfs(path, type,
3679 param->fp_obd_index, &stat_buf,
3682 llapi_printf(LLAPI_MSG_NORMAL,
3683 "obd_uuid: %s failed %s ",
3684 param->fp_obd_uuid->uuid,
3691 static int find_check_stripe_size(struct find_param *param)
3693 struct lov_comp_md_v1 *comp_v1 = NULL;
3694 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3695 int ret, i, count = 1;
3697 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3698 comp_v1 = (struct lov_comp_md_v1 *)v1;
3699 count = comp_v1->lcm_entry_count;
3700 ret = param->fp_exclude_stripe_size ? 1 : -1;
3703 for (i = 0; i < count; i++) {
3705 v1 = lov_comp_entry(comp_v1, i);
3707 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3708 param->fp_stripe_size_sign,
3709 param->fp_exclude_stripe_size,
3710 param->fp_stripe_size_units, 0);
3711 /* If any stripe_size matches */
3719 static __u32 find_get_stripe_count(struct find_param *param)
3721 struct lov_comp_md_v1 *comp_v1 = NULL;
3722 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3724 __u32 stripe_count = 0;
3726 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3727 comp_v1 = (struct lov_comp_md_v1 *)v1;
3728 count = comp_v1->lcm_entry_count;
3731 for (i = 0; i < count; i++) {
3733 v1 = lov_comp_entry(comp_v1, i);
3734 stripe_count += v1->lmm_stripe_count;
3737 return stripe_count;
3740 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3742 static int find_check_layout(struct find_param *param)
3744 struct lov_comp_md_v1 *comp_v1 = NULL;
3745 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3747 bool found = false, valid = false;
3749 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3750 comp_v1 = (struct lov_comp_md_v1 *)v1;
3751 count = comp_v1->lcm_entry_count;
3754 for (i = 0; i < count; i++) {
3756 v1 = lov_comp_entry(comp_v1, i);
3758 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3762 if (v1->lmm_pattern & param->fp_layout) {
3771 if ((found && !param->fp_exclude_layout) ||
3772 (!found && param->fp_exclude_layout))
3778 static int find_check_pool(struct find_param *param)
3780 struct lov_comp_md_v1 *comp_v1 = NULL;
3781 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3782 struct lov_user_md_v3 *v3 = (void *)v1;
3786 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3787 comp_v1 = (struct lov_comp_md_v1 *)v1;
3788 count = comp_v1->lcm_entry_count;
3789 /* empty requested pool is taken as no pool search */
3790 if (count == 0 && param->fp_poolname[0] == '\0')
3794 for (i = 0; i < count; i++) {
3795 if (comp_v1 != NULL)
3796 v1 = lov_comp_entry(comp_v1, i);
3798 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3799 (param->fp_poolname[0] == '\0')) ||
3800 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3801 (strncmp(v3->lmm_pool_name,
3802 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3803 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3804 (strcmp(param->fp_poolname, "*") == 0))) {
3810 if ((found && !param->fp_exclude_pool) ||
3811 (!found && param->fp_exclude_pool))
3817 static int find_check_comp_options(struct find_param *param)
3819 lstat_t *st = ¶m->fp_lmd->lmd_st;
3820 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3821 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3822 struct lov_comp_md_entry_v1 *entry;
3825 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3826 comp_v1 = (struct lov_comp_md_v1 *)v1;
3828 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3829 if (forged_v1 == NULL)
3831 comp_v1 = forged_v1;
3832 comp_v1->lcm_entry_count = 1;
3833 entry = &comp_v1->lcm_entries[0];
3834 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3835 entry->lcme_extent.e_start = 0;
3836 entry->lcme_extent.e_end = LUSTRE_EOF;
3839 /* invalid case, don't match for any kind of search. */
3840 if (comp_v1->lcm_entry_count == 0) {
3845 if (param->fp_check_comp_count) {
3846 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3847 param->fp_comp_count,
3848 param->fp_comp_count_sign,
3849 param->fp_exclude_comp_count, 1, 0);
3855 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3856 entry = &comp_v1->lcm_entries[i];
3858 if (param->fp_check_comp_flags) {
3860 if (((param->fp_comp_flags & entry->lcme_flags) !=
3861 param->fp_comp_flags) ||
3862 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3868 if (param->fp_check_comp_start) {
3869 ret = find_value_cmp(entry->lcme_extent.e_start,
3870 param->fp_comp_start,
3871 param->fp_comp_start_sign,
3872 param->fp_exclude_comp_start,
3873 param->fp_comp_start_units, 0);
3878 if (param->fp_check_comp_end) {
3879 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3885 /* the component matches all criteria */
3889 if (forged_v1 != NULL)
3894 static int find_check_mirror_options(struct find_param *param)
3896 struct lov_comp_md_v1 *comp_v1;
3897 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3900 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3903 comp_v1 = (struct lov_comp_md_v1 *)v1;
3905 if (param->fp_check_mirror_count) {
3906 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3907 param->fp_mirror_count,
3908 param->fp_mirror_count_sign,
3909 param->fp_exclude_mirror_count, 1, 0);
3914 if (param->fp_check_mirror_state) {
3916 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
3918 if ((param->fp_mirror_state != 0 &&
3919 file_state != param->fp_mirror_state) ||
3920 file_state == param->fp_mirror_neg_state)
3927 static bool find_check_lmm_info(struct find_param *param)
3929 return param->fp_check_pool || param->fp_check_stripe_count ||
3930 param->fp_check_stripe_size || param->fp_check_layout ||
3931 param->fp_check_comp_count || param->fp_check_comp_end ||
3932 param->fp_check_comp_start || param->fp_check_comp_flags ||
3933 param->fp_check_mirror_count ||
3934 param->fp_check_mirror_state ||
3935 param->fp_check_projid;
3939 * Get file/directory project id.
3940 * by the open fd resides on.
3941 * Return 0 and project id on success, or -ve errno.
3943 static int fget_projid(int fd, int *projid)
3948 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3952 *projid = fsx.fsx_projid;
3956 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3957 void *data, struct dirent64 *de)
3959 struct find_param *param = (struct find_param *)data;
3960 DIR *dir = dirp == NULL ? NULL : *dirp;
3961 int decision = 1; /* 1 is accepted; -1 is rejected. */
3962 lstat_t *st = ¶m->fp_lmd->lmd_st;
3964 int checked_type = 0;
3966 __u32 stripe_count = 0;
3969 if (parent == NULL && dir == NULL)
3972 /* If a regular expression is presented, make the initial decision */
3973 if (param->fp_pattern != NULL) {
3974 char *fname = strrchr(path, '/');
3975 fname = (fname == NULL ? path : fname + 1);
3976 ret = fnmatch(param->fp_pattern, fname, 0);
3977 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3978 (ret == 0 && param->fp_exclude_pattern))
3982 /* See if we can check the file type from the dirent. */
3983 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3986 if (DTTOIF(de->d_type) == param->fp_type) {
3987 if (param->fp_exclude_type)
3990 if (!param->fp_exclude_type)
3997 /* Request MDS for the stat info if some of these parameters need
3998 * to be compared. */
3999 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4000 param->fp_check_uid || param->fp_check_gid ||
4001 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4002 param->fp_check_size || param->fp_check_blocks ||
4003 find_check_lmm_info(param) ||
4004 param->fp_check_mdt_count || param->fp_check_hash_type)
4007 if (param->fp_type != 0 && checked_type == 0)
4010 if (decision == 0) {
4011 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4012 param->fp_get_lmv = 1;
4013 ret = cb_get_dirstripe(path, dir, param);
4018 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4019 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4020 param->fp_lum_size, GET_LMD_INFO);
4021 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4022 find_check_lmm_info(param)) {
4023 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4025 /* We need to "fake" the "use the default" values
4026 * since the lmm struct is zeroed out at this point. */
4027 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4028 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4030 ostid_set_seq(&lmm->lmm_oi,
4031 FID_SEQ_LOV_DEFAULT);
4032 lmm->lmm_stripe_size = 0;
4033 lmm->lmm_stripe_count = 0;
4034 lmm->lmm_stripe_offset = -1;
4036 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4038 ret = llapi_file_fget_mdtidx(dirfd(dir),
4039 ¶m->fp_file_mdt_index);
4040 } else if (S_ISREG(st->st_mode)) {
4041 /* FIXME: we could get the MDT index from the
4042 * file's FID in lmd->lmd_lmm.lmm_oi without
4043 * opening the file, once we are sure that
4044 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4045 * That would still be an ioctl() to map the
4046 * FID to the MDT, but not an open RPC. */
4047 fd = open(path, O_RDONLY);
4049 ret = llapi_file_fget_mdtidx(fd,
4050 ¶m->fp_file_mdt_index);
4055 /* For a special file, we assume it resides on
4056 * the same MDT as the parent directory. */
4057 ret = llapi_file_fget_mdtidx(dirfd(parent),
4058 ¶m->fp_file_mdt_index);
4069 stripe_count = find_get_stripe_count(param);
4073 if (param->fp_type && !checked_type) {
4074 if ((st->st_mode & S_IFMT) == param->fp_type) {
4075 if (param->fp_exclude_type)
4078 if (!param->fp_exclude_type)
4084 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4085 if (lustre_fs && param->fp_got_uuids &&
4086 param->fp_dev != st->st_dev) {
4087 /* A lustre/lustre mount point is crossed. */
4088 param->fp_got_uuids = 0;
4089 param->fp_obds_printed = 0;
4090 param->fp_mdt_index = OBD_NOT_FOUND;
4091 param->fp_obd_index = OBD_NOT_FOUND;
4094 if (lustre_fs && !param->fp_got_uuids) {
4095 ret = setup_target_indexes(dir ? dir : parent, path,
4100 param->fp_dev = st->st_dev;
4101 } else if (!lustre_fs && param->fp_got_uuids) {
4102 /* A lustre/non-lustre mount point is crossed. */
4103 param->fp_got_uuids = 0;
4104 param->fp_mdt_index = OBD_NOT_FOUND;
4105 param->fp_obd_index = OBD_NOT_FOUND;
4109 if (param->fp_check_stripe_size) {
4110 decision = find_check_stripe_size(param);
4115 if (param->fp_check_stripe_count) {
4116 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4117 param->fp_stripe_count_sign,
4118 param->fp_exclude_stripe_count, 1, 0);
4123 if (param->fp_check_mdt_count) {
4124 decision = find_value_cmp(
4125 param->fp_lmv_md->lum_stripe_count,
4126 param->fp_mdt_count,
4127 param->fp_mdt_count_sign,
4128 param->fp_exclude_mdt_count, 1, 0);
4133 if (param->fp_check_layout) {
4134 decision = find_check_layout(param);
4139 if (param->fp_check_hash_type) {
4142 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4143 if ((found && param->fp_exclude_hash_type) ||
4144 (!found && !param->fp_exclude_hash_type)) {
4150 /* If an OBD UUID is specified but none matches, skip this file. */
4151 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4152 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4155 /* If an OST or MDT UUID is given, and some OST matches,
4157 if (param->fp_obd_index != OBD_NOT_FOUND ||
4158 param->fp_mdt_index != OBD_NOT_FOUND) {
4159 if (param->fp_obd_uuid) {
4160 if (check_obd_match(param)) {
4161 /* If no mdtuuid is given, we are done.
4162 * Otherwise, fall through to the mdtuuid
4164 if (!param->fp_mdt_uuid)
4171 if (param->fp_mdt_uuid) {
4172 if (check_mdt_match(param))
4179 if (param->fp_check_uid) {
4180 if (st->st_uid == param->fp_uid) {
4181 if (param->fp_exclude_uid)
4184 if (!param->fp_exclude_uid)
4189 if (param->fp_check_gid) {
4190 if (st->st_gid == param->fp_gid) {
4191 if (param->fp_exclude_gid)
4194 if (!param->fp_exclude_gid)
4199 if (param->fp_check_projid) {
4203 fd = open(path, O_RDONLY);
4206 ret = fget_projid(fd, &projid);
4211 if (projid == param->fp_projid) {
4212 if (param->fp_exclude_uid)
4215 if (!param->fp_exclude_projid)
4220 if (param->fp_check_pool) {
4221 decision = find_check_pool(param);
4226 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4227 param->fp_check_comp_start || param->fp_check_comp_end) {
4228 decision = find_check_comp_options(param);
4233 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4234 decision = find_check_mirror_options(param);
4239 /* Check the time on mds. */
4241 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4244 for_mds = lustre_fs ?
4245 (S_ISREG(st->st_mode) && stripe_count) : 0;
4246 decision = find_time_check(st, param, for_mds);
4251 /* If file still fits the request, ask ost for updated info.
4252 The regular stat is almost of the same speed as some new
4253 'glimpse-size-ioctl'. */
4255 if ((param->fp_check_size || param->fp_check_blocks) &&
4256 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4260 /* For regular files with the stripe the decision may have not
4261 * been taken yet if *time or size is to be checked. */
4262 if (param->fp_obd_index != OBD_NOT_FOUND)
4263 print_failed_tgt(param, path, LL_STATFS_LOV);
4265 if (param->fp_mdt_index != OBD_NOT_FOUND)
4266 print_failed_tgt(param, path, LL_STATFS_LMV);
4269 ret = fstat_f(dirfd(dir), st);
4270 else if (de != NULL)
4271 ret = fstatat_f(dirfd(parent), de->d_name, st,
4272 AT_SYMLINK_NOFOLLOW);
4274 ret = lstat_f(path, st);
4277 if (errno == ENOENT) {
4278 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4279 "warning: %s: %s does not exist",
4284 llapi_error(LLAPI_MSG_ERROR, ret,
4285 "%s: IOC_LOV_GETINFO on %s failed",
4291 /* Check the time on osc. */
4292 decision = find_time_check(st, param, 0);
4297 if (param->fp_check_size) {
4298 decision = find_value_cmp(st->st_size, param->fp_size,
4299 param->fp_size_sign,
4300 param->fp_exclude_size,
4301 param->fp_size_units, 0);
4306 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4307 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4308 param->fp_blocks_sign,
4309 param->fp_exclude_blocks,
4310 param->fp_blocks_units, 0);
4315 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4316 if (param->fp_zero_end)
4317 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4319 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4323 /* Do not get down anymore? */
4324 if (param->fp_depth == param->fp_max_depth) {
4335 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4336 void *param_data, struct dirent64 *de)
4338 struct find_param *param = (struct find_param *)param_data;
4339 DIR *tmp_parent = parent;
4340 char raw[MAX_IOC_BUFLEN] = {'\0'};
4342 struct obd_ioctl_data data = { 0 };
4349 if (parent == NULL && dirp == NULL)
4355 if (parent == NULL) {
4356 tmp_parent = opendir_parent(path);
4357 if (tmp_parent == NULL) {
4360 llapi_error(LLAPI_MSG_ERROR, ret,
4361 "can not open %s", path);
4366 fd = dirfd(tmp_parent);
4368 path_copy = strdup(path);
4369 filename = basename(path_copy);
4370 data.ioc_inlbuf1 = (char *)filename;
4371 data.ioc_inllen1 = strlen(filename) + 1;
4372 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
4373 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
4374 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4376 llapi_error(LLAPI_MSG_ERROR, ret,
4377 "llapi_obd_statfs: error packing ioctl data");
4382 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4384 if (errno == EBUSY && !retry) {
4385 /* because migrate may not be able to lock all involved
4386 * objects in order, for some of them it try lock, while
4387 * there may be conflicting COS locks and cause migrate
4388 * fail with EBUSY, hope a sync() could cause
4389 * transaction commit and release these COS locks. */
4395 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4396 path, strerror(-ret), ret);
4398 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4399 fprintf(stdout, "migrate %s to MDT%d\n",
4400 path, param->fp_mdt_index);
4405 /* If the directory is being migration, we need
4406 * close the directory after migration,
4407 * so the old directory cache will be cleanup
4408 * on the client side, and re-open to get the
4409 * new directory handle */
4410 *dirp = opendir(path);
4411 if (*dirp == NULL) {
4413 llapi_error(LLAPI_MSG_ERROR, ret,
4414 "%s: Failed to open '%s'", __func__, path);
4419 closedir(tmp_parent);
4426 int llapi_migrate_mdt(char *path, struct find_param *param)
4428 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4431 int llapi_mv(char *path, struct find_param *param)
4433 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4434 static bool printed;
4437 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4438 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4442 return llapi_migrate_mdt(path, param);
4445 int llapi_find(char *path, struct find_param *param)
4447 return param_callback(path, cb_find_init, cb_common_fini, param);
4451 * Get MDT number that the file/directory inode referenced
4452 * by the open fd resides on.
4453 * Return 0 and mdtidx on success, or -ve errno.
4455 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4457 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4462 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4463 struct dirent64 *de)
4465 struct find_param *param = (struct find_param *)data;
4466 DIR *d = dirp == NULL ? NULL : *dirp;
4470 if (parent == NULL && d == NULL)
4474 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4475 } else /* if (parent) */ {
4478 fd = open(path, O_RDONLY | O_NOCTTY);
4480 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4488 if (ret == -ENODATA) {
4489 if (!param->fp_obd_uuid)
4490 llapi_printf(LLAPI_MSG_NORMAL,
4491 "'%s' has no stripe info\n", path);
4493 } else if (ret == -ENOENT) {
4494 llapi_error(LLAPI_MSG_WARN, ret,
4495 "warning: %s: '%s' does not exist",
4498 } else if (ret == -ENOTTY) {
4499 llapi_error(LLAPI_MSG_ERROR, ret,
4500 "%s: '%s' not on a Lustre fs",
4503 llapi_error(LLAPI_MSG_ERROR, ret,
4504 "error: %s: '%s' failed get_mdtidx",
4510 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4511 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4513 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4517 /* Do not go down anymore? */
4518 if (param->fp_depth == param->fp_max_depth)
4526 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4527 struct dirent64 *de)
4529 struct find_param *param = (struct find_param *)data;
4530 DIR *d = dirp == NULL ? NULL : *dirp;
4533 if (parent == NULL && d == NULL)
4536 if (param->fp_obd_uuid) {
4537 param->fp_quiet = 1;
4538 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4543 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4544 ret = cb_get_dirstripe(path, d, param);
4546 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4547 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4548 param->fp_lum_size, GET_LMD_STRIPE);
4553 if (errno == ENODATA && d != NULL) {
4554 /* We need to "fake" the "use the default" values
4555 * since the lmm struct is zeroed out at this point.
4556 * The magic needs to be set in order to satisfy
4557 * a check later on in the code path.
4558 * The object_seq needs to be set for the "(Default)"
4559 * prefix to be displayed. */
4560 if (param->fp_get_default_lmv) {
4561 struct lmv_user_md *lum = param->fp_lmv_md;
4563 lum->lum_magic = LMV_USER_MAGIC;
4564 lum->lum_stripe_count = 0;
4565 lum->lum_stripe_offset = -1;
4567 } else if (param->fp_get_lmv) {
4568 struct lmv_user_md *lum = param->fp_lmv_md;
4571 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4574 lum->lum_magic = LMV_MAGIC_V1;
4575 lum->lum_stripe_count = 0;
4576 lum->lum_stripe_offset = mdtidx;
4579 struct lov_user_md *lmm =
4580 ¶m->fp_lmd->lmd_lmm;
4582 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4584 ostid_set_seq(&lmm->lmm_oi,
4585 FID_SEQ_LOV_DEFAULT);
4586 lmm->lmm_stripe_count = 0;
4587 lmm->lmm_stripe_size = 0;
4588 lmm->lmm_stripe_offset = -1;
4591 } else if (errno == ENODATA && parent != NULL) {
4592 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4593 llapi_printf(LLAPI_MSG_NORMAL,
4594 "%s has no stripe info\n", path);
4596 } else if (errno == ENOENT) {
4597 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4598 "warning: %s: %s does not exist",
4601 } else if (errno == ENOTTY) {
4603 llapi_error(LLAPI_MSG_ERROR, ret,
4604 "%s: '%s' not on a Lustre fs?",
4609 llapi_error(LLAPI_MSG_ERROR, ret,
4610 "error: %s: %s failed for %s",
4611 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4612 "IOC_MDC_GETFILESTRIPE", path);
4619 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4620 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4623 /* Do not get down anymore? */
4624 if (param->fp_depth == param->fp_max_depth)
4632 int llapi_getstripe(char *path, struct find_param *param)
4634 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4635 cb_get_mdt_index : cb_getstripe,
4636 cb_common_fini, param);
4639 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4640 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4642 char raw[MAX_IOC_BUFLEN] = {'\0'};
4644 struct obd_ioctl_data data = { 0 };
4647 data.ioc_inlbuf1 = (char *)&type;
4648 data.ioc_inllen1 = sizeof(__u32);
4649 data.ioc_inlbuf2 = (char *)&index;
4650 data.ioc_inllen2 = sizeof(__u32);
4651 data.ioc_pbuf1 = (char *)stat_buf;
4652 data.ioc_plen1 = sizeof(struct obd_statfs);
4653 data.ioc_pbuf2 = (char *)uuid_buf;
4654 data.ioc_plen2 = sizeof(struct obd_uuid);
4656 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4658 llapi_error(LLAPI_MSG_ERROR, rc,
4659 "llapi_obd_statfs: error packing ioctl data");
4663 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4665 return rc < 0 ? -errno : 0;
4668 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4669 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4674 fd = open(path, O_RDONLY);
4677 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4679 /* If we can't even open a file on the filesystem (e.g. with
4680 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4684 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4691 #define MAX_STRING_SIZE 128
4693 int llapi_ping(char *obd_type, char *obd_name)
4699 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4700 obd_type, obd_name);
4704 fd = open(path.gl_pathv[0], O_WRONLY);
4707 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4712 /* The purpose is to send a byte as a ping, whatever this byte is. */
4713 /* coverity[uninit_use_in_call] */
4714 rc = write(fd, buf, 1);
4722 cfs_free_param_data(&path);
4726 int llapi_target_iterate(int type_num, char **obd_type,
4727 void *args, llapi_cb_t cb)
4729 char buf[MAX_STRING_SIZE];
4734 rc = cfs_get_param_paths(¶m, "devices");
4738 fp = fopen(param.gl_pathv[0], "r");
4741 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4746 while (fgets(buf, sizeof(buf), fp) != NULL) {
4747 char *obd_type_name = NULL;
4748 char *obd_name = NULL;
4749 char *obd_uuid = NULL;
4751 struct obd_statfs osfs_buffer;
4753 while(bufp[0] == ' ')
4756 for(i = 0; i < 3; i++) {
4757 obd_type_name = strsep(&bufp, " ");
4759 obd_name = strsep(&bufp, " ");
4760 obd_uuid = strsep(&bufp, " ");
4762 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4764 for (i = 0; i < type_num; i++) {
4765 if (strcmp(obd_type_name, obd_type[i]) != 0)
4768 cb(obd_type_name, obd_name, obd_uuid, args);
4773 cfs_free_param_data(¶m);
4777 static void do_target_check(char *obd_type_name, char *obd_name,
4778 char *obd_uuid, void *args)
4782 rc = llapi_ping(obd_type_name, obd_name);
4783 if (rc == ENOTCONN) {
4784 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4786 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4788 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4792 int llapi_target_check(int type_num, char **obd_type, char *dir)
4794 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4797 #undef MAX_STRING_SIZE
4799 /* Is this a lustre fs? */
4800 int llapi_is_lustre_mnttype(const char *type)
4802 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4805 /* Is this a lustre client fs? */
4806 int llapi_is_lustre_mnt(struct mntent *mnt)
4808 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4809 strstr(mnt->mnt_fsname, ":/") != NULL);
4812 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4814 char fsname[PATH_MAX + 1];
4818 rc = llapi_search_fsname(mnt, fsname);
4822 root = open(mnt, O_RDONLY | O_DIRECTORY);
4825 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4829 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4837 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4838 * format must have %s%s, buf must be > 16
4839 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4840 * then buf = "lustre-MDT0000"
4842 static int get_mdtname(char *name, char *format, char *buf)
4844 char suffix[]="-MDT0000";
4845 int len = strlen(name);
4847 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4848 name[len - 5] = '\0';
4853 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4856 /* Not enough room to add suffix */
4857 llapi_err_noerrno(LLAPI_MSG_ERROR,
4858 "Invalid MDT name |%s|", name);
4863 return sprintf(buf, format, name, suffix);
4866 /** ioctl on filsystem root, with mdtindex sent as data
4867 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4868 * \param mdtidxp pointer to integer within data to be filled in with the
4869 * mdt index (0 if no mdt is specified). NULL won't be filled.
4871 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4879 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4880 Open root and parse mdt index. */
4881 if (mdtname[0] == '/') {
4883 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4884 (char *)mdtname, -1);
4886 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4888 ptr = fsname + strlen(fsname) - 8;
4890 index = strtol(ptr + 4, NULL, 16);
4891 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4895 llapi_err_noerrno(LLAPI_MSG_ERROR,
4896 "Can't open %s: %d\n", mdtname, rc);
4903 rc = ioctl(fd, opc, data);
4912 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4913 int buflen, long long *recno, int *linkno)
4915 const char *fidstr_orig = fidstr;
4917 struct getinfo_fid2path *gf;
4922 while (*fidstr == '[')
4925 sscanf(fidstr, SFID, RFID(&fid));
4926 if (!fid_is_sane(&fid)) {
4927 llapi_err_noerrno(LLAPI_MSG_ERROR,
4928 "bad FID format '%s', should be [seq:oid:ver]"
4929 " (e.g. "DFID")\n", fidstr_orig,
4930 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4934 gf = malloc(sizeof(*gf) + buflen);
4939 gf->gf_recno = *recno;
4940 gf->gf_linkno = *linkno;
4941 gf->gf_pathlen = buflen;
4943 /* Take path or fsname */
4944 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4949 /* strip out instances of // */
4950 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4951 if ((*a == '/') && (*(a + 1) == '/'))
4958 if (buf[0] == '\0') { /* ROOT path */
4963 *recno = gf->gf_recno;
4964 *linkno = gf->gf_linkno;
4971 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
4974 struct lustre_mdt_attrs *lma;
4978 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4980 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4983 lma = (struct lustre_mdt_attrs *)buf;
4984 fid_le_to_cpu(fid, &lma->lma_self_fid);
4988 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
4993 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5002 int llapi_fd2fid(int fd, struct lu_fid *fid)
5006 memset(fid, 0, sizeof(*fid));
5008 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5009 if (rc == -EINVAL || rc == -ENOTTY)
5010 rc = fid_from_lma(NULL, fd, fid);
5015 int llapi_path2fid(const char *path, struct lu_fid *fid)
5019 memset(fid, 0, sizeof(*fid));
5020 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5022 if (errno == ELOOP || errno == ENXIO)
5023 return fid_from_lma(path, -1, fid);
5027 rc = llapi_fd2fid(fd, fid);
5028 if (rc == -EINVAL || rc == -ENOTTY)
5029 rc = fid_from_lma(path, -1, fid);
5035 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5036 char *name, size_t name_size)
5038 struct getparent *gp;
5041 gp = malloc(sizeof(*gp) + name_size);
5045 gp->gp_linkno = linkno;
5046 gp->gp_name_size = name_size;
5048 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5054 *parent_fid = gp->gp_fid;
5056 strncpy(name, gp->gp_name, name_size);
5057 name[name_size - 1] = '\0';
5064 int llapi_path2parent(const char *path, unsigned int linkno,
5065 struct lu_fid *parent_fid, char *name, size_t name_size)
5070 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5074 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5079 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5084 root = open(mnt, O_RDONLY | O_DIRECTORY);
5087 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5091 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5094 llapi_error(LLAPI_MSG_ERROR, rc,
5095 "ioctl on %s for getting connect flags failed", mnt);
5102 * Get a 64-bit value representing the version of file data pointed by fd.
5104 * Each write or truncate, flushed on OST, will change this value. You can use
5105 * this value to verify if file data was modified. This only checks the file
5106 * data, not metadata.
5108 * \param flags 0: no flush pages, usually used it the process has already
5110 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5112 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5113 * pages from clients.
5115 * \retval 0 on success.
5116 * \retval -errno on error.
5118 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5121 struct ioc_data_version idv;
5123 idv.idv_flags = (__u32)flags;
5125 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5129 *data_version = idv.idv_version;
5135 * Flush cached pages from all clients.
5137 * \param fd File descriptor
5141 int llapi_file_flush(int fd)
5145 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5149 * Fetch layout version from OST objects. Layout version on OST objects are
5150 * only set when the file is a mirrored file AND after the file has been
5151 * written at least once.
5153 * It actually fetches the least layout version from the objects.
5155 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5158 struct ioc_data_version idv = { 0 };
5160 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5164 *layout_version = idv.idv_layout_version;
5170 * Create a file without any name open it for read/write
5172 * - file is created as if it were a standard file in the given \a directory
5173 * - file does not appear in \a directory and mtime does not change because
5174 * the filename is handled specially by the Lustre MDS.
5175 * - file is removed at final close
5176 * - file modes are rw------- since it doesn't make sense to have a read-only
5177 * or write-only file that cannot be opened again.
5178 * - if user wants another mode it must use fchmod() on the open file, no
5179 * security problems arise because it cannot be opened by another process.
5181 * \param[in] directory directory from which to inherit layout/MDT idx
5182 * \param[in] idx MDT index on which the file is created,
5183 * \a idx == -1 means no specific MDT is requested
5184 * \param[in] open_flags standard open(2) flags
5186 * \retval 0 on success.
5187 * \retval -errno on error.
5189 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5191 char file_path[PATH_MAX];
5192 char filename[PATH_MAX];
5193 int saved_errno = errno;
5201 snprintf(filename, sizeof(filename),
5202 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5204 snprintf(filename, sizeof(filename),
5205 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5207 rc = snprintf(file_path, sizeof(file_path),
5208 "%s/%s", directory, filename);
5209 if (rc >= sizeof(file_path))
5212 fd = open(file_path,
5213 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5215 } while (fd < 0 && errno == EEXIST);
5218 llapi_error(LLAPI_MSG_ERROR, errno,
5219 "Cannot create volatile file '%s' in '%s'",
5220 filename + LUSTRE_VOLATILE_HDR_LEN,
5225 /* Unlink file in case this wasn't a Lustre filesystem and the
5226 * magic volatile filename wasn't handled as intended. The
5227 * effect is the same. If volatile open was supported then we
5228 * expect unlink() to return -ENOENT. */
5229 (void)unlink(file_path);
5231 /* Since we are returning successfully we restore errno (and
5232 * mask out possible EEXIST from open() and ENOENT from
5234 errno = saved_errno;
5240 * Swap the layouts between 2 file descriptors
5241 * the 2 files must be open for writing
5242 * first fd received the ioctl, second fd is passed as arg
5243 * this is assymetric but avoid use of root path for ioctl
5245 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5246 int gid, __u64 flags)
5248 struct lustre_swap_layouts lsl;
5253 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5254 rc = fstat(fd1, &st1);
5258 rc = fstat(fd2, &st2);
5263 lsl.sl_flags = flags;
5267 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5271 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5272 struct timeval tv1[2];
5273 struct timeval tv2[2];
5275 memset(tv1, 0, sizeof(tv1));
5276 memset(tv2, 0, sizeof(tv2));
5278 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5279 tv1[0].tv_sec = st1.st_atime;
5280 tv2[0].tv_sec = st2.st_atime;
5282 tv1[0].tv_sec = st2.st_atime;
5283 tv2[0].tv_sec = st1.st_atime;
5286 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5287 tv1[1].tv_sec = st1.st_mtime;
5288 tv2[1].tv_sec = st2.st_mtime;
5290 tv1[1].tv_sec = st2.st_mtime;
5291 tv2[1].tv_sec = st1.st_mtime;
5294 rc = futimes(fd1, tv1);
5298 rc = futimes(fd2, tv2);
5306 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5313 while (grp_id == 0);
5315 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5323 * Swap the layouts between 2 files
5324 * the 2 files are open in write
5326 int llapi_swap_layouts(const char *path1, const char *path2,
5327 __u64 dv1, __u64 dv2, __u64 flags)
5331 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5334 llapi_error(LLAPI_MSG_ERROR, rc,
5335 "error: cannot open '%s' for write", path1);
5339 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5342 llapi_error(LLAPI_MSG_ERROR, rc,
5343 "error: cannot open '%s' for write", path2);
5347 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5349 llapi_error(LLAPI_MSG_ERROR, rc,
5350 "error: cannot swap layout between '%s' and '%s'",
5361 * Attempt to open a file with Lustre file identifier \a fid
5362 * and return an open file descriptor.
5364 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5365 * \param[in] fid Lustre file identifier of file to open
5366 * \param[in] flags open() flags
5368 * \retval non-negative file descriptor on successful open
5369 * \retval -1 if an error occurred
5371 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5374 char mntdir[PATH_MAX];
5375 char path[PATH_MAX];
5378 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5382 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5383 return open(path, flags);
5389 * \param fd File to lock.
5390 * \param gid Group Identifier.
5392 * \retval 0 on success.
5393 * \retval -errno on failure.
5395 int llapi_group_lock(int fd, int gid)
5399 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5402 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5410 * \param fd File to unlock.
5411 * \param gid Group Identifier.
5413 * \retval 0 on success.
5414 * \retval -errno on failure.
5416 int llapi_group_unlock(int fd, int gid)
5420 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5423 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");