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;
1006 struct obd_ioctl_data data = { 0 };
1009 char *dirpath = NULL;
1010 char *namepath = NULL;
1015 rc = verify_dir_param(name, param);
1019 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1020 param->lsp_is_specific ?
1021 LMV_USER_MAGIC_SPECIFIC :
1024 lmu = calloc(1, lmu_size);
1028 dirpath = strdup(name);
1034 namepath = strdup(name);
1041 param2lmu(lmu, param);
1043 filename = basename(namepath);
1044 dir = dirname(dirpath);
1046 data.ioc_inlbuf1 = (char *)filename;
1047 data.ioc_inllen1 = strlen(filename) + 1;
1048 data.ioc_inlbuf2 = (char *)lmu;
1049 data.ioc_inllen2 = lmu_size;
1050 data.ioc_type = mode;
1051 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
1053 llapi_error(LLAPI_MSG_ERROR, rc,
1054 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1059 fd = open(dir, O_DIRECTORY | O_RDONLY);
1062 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1066 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1067 char *errmsg = "stripe already set";
1070 if (errno != EEXIST && errno != EALREADY)
1071 errmsg = strerror(errno);
1073 llapi_err_noerrno(LLAPI_MSG_ERROR,
1074 "dirstripe error on '%s': %s", name, errmsg);
1085 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1086 int stripe_count, int stripe_pattern,
1087 const char *pool_name)
1089 const struct llapi_stripe_param param = {
1090 .lsp_stripe_count = stripe_count,
1091 .lsp_stripe_offset = stripe_offset,
1092 .lsp_stripe_pattern = stripe_pattern,
1093 .lsp_pool = (char *)pool_name
1096 return llapi_dir_create(name, mode, ¶m);
1099 int llapi_direntry_remove(char *dname)
1101 char *dirpath = NULL;
1102 char *namepath = NULL;
1108 dirpath = strdup(dname);
1109 namepath = strdup(dname);
1110 if (!dirpath || !namepath)
1113 filename = basename(namepath);
1115 dir = dirname(dirpath);
1117 fd = open(dir, O_DIRECTORY | O_RDONLY);
1120 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1125 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1126 char *errmsg = strerror(errno);
1127 llapi_err_noerrno(LLAPI_MSG_ERROR,
1128 "error on ioctl %#jx for '%s' (%d): %s",
1129 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1141 * Find the fsname, the full path, and/or an open fd.
1142 * Either the fsname or path must not be NULL
1144 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1147 char buf[PATH_MAX], mntdir[PATH_MAX];
1148 char *ptr, *ptr_end;
1150 int idx = 0, len = 0, mntlen, fd;
1153 /* get the mount point */
1154 fp = setmntent(PROC_MOUNTS, "r");
1157 llapi_error(LLAPI_MSG_ERROR, rc,
1158 "cannot retrieve filesystem mount point");
1162 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1165 if (!llapi_is_lustre_mnt(&mnt))
1168 if ((want & WANT_INDEX) && (idx++ != index))
1171 mntlen = strlen(mnt.mnt_dir);
1172 ptr = strchr(mnt.mnt_fsname, '/');
1173 while (ptr && *ptr == '/')
1175 /* thanks to the call to llapi_is_lustre_mnt() above,
1176 * we are sure that mnt.mnt_fsname contains ":/",
1177 * so ptr should never be NULL */
1181 while (*ptr_end != '/' && *ptr_end != '\0')
1184 /* Check the fsname for a match, if given */
1185 if (!(want & WANT_FSNAME) && fsname != NULL &&
1186 (strlen(fsname) > 0) &&
1187 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1190 /* If the path isn't set return the first one we find */
1191 if (path == NULL || strlen(path) == 0) {
1192 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1193 mntdir[strlen(mnt.mnt_dir)] = '\0';
1194 if ((want & WANT_FSNAME) && fsname != NULL) {
1195 strncpy(fsname, ptr, ptr_end - ptr);
1196 fsname[ptr_end - ptr] = '\0';
1200 /* Otherwise find the longest matching path */
1201 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1202 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1203 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1204 mntdir[strlen(mnt.mnt_dir)] = '\0';
1206 if ((want & WANT_FSNAME) && fsname != NULL) {
1207 strncpy(fsname, ptr, ptr_end - ptr);
1208 fsname[ptr_end - ptr] = '\0';
1217 if ((want & WANT_PATH) && path != NULL) {
1218 strncpy(path, mntdir, strlen(mntdir));
1219 path[strlen(mntdir)] = '\0';
1221 if (want & WANT_FD) {
1222 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1225 llapi_error(LLAPI_MSG_ERROR, rc,
1226 "cannot open '%s': %s", mntdir,
1233 } else if (want & WANT_ERROR)
1234 llapi_err_noerrno(LLAPI_MSG_ERROR,
1235 "'%s' not on a mounted Lustre filesystem",
1236 (want & WANT_PATH) ? fsname : path);
1241 * search lustre mounts
1243 * Calling this function will return to the user the mount point, mntdir, and
1244 * the file system name, fsname, if the user passed a buffer to this routine.
1246 * The user inputs are pathname and index. If the pathname is supplied then
1247 * the value of the index will be ignored. The pathname will return data if
1248 * the pathname is located on a lustre mount. Index is used to pick which
1249 * mount point you want in the case of multiple mounted lustre file systems.
1250 * See function lfs_osts in lfs.c for an example of the index use.
1252 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1255 int want = WANT_PATH, idx = -1;
1257 if (!pathname || pathname[0] == '\0') {
1261 strcpy(mntdir, pathname);
1264 want |= WANT_FSNAME;
1265 return get_root_path(want, fsname, NULL, mntdir, idx);
1268 /* Given a path, find the corresponding Lustre fsname */
1269 int llapi_search_fsname(const char *pathname, char *fsname)
1274 path = realpath(pathname, NULL);
1276 char tmp[PATH_MAX - 1];
1282 if (pathname[0] != '/') {
1283 /* Need an absolute path, but realpath() only works for
1284 * pathnames that actually exist. We go through the
1285 * extra hurdle of dirname(getcwd() + pathname) in
1286 * case the relative pathname contains ".." in it. */
1287 char realpath[PATH_MAX - 1];
1289 if (getcwd(realpath, sizeof(realpath) - 2) == NULL) {
1291 llapi_error(LLAPI_MSG_ERROR, rc,
1292 "cannot get current working directory");
1296 rc = snprintf(tmp, sizeof(tmp), "%s/", realpath);
1297 if (rc >= sizeof(tmp)) {
1299 llapi_error(LLAPI_MSG_ERROR, rc,
1300 "invalid parent path '%s'",
1306 rc = snprintf(buf, sizeof(buf), "%s%s", tmp, pathname);
1307 if (rc >= sizeof(buf)) {
1309 llapi_error(LLAPI_MSG_ERROR, rc,
1310 "invalid path '%s'", pathname);
1313 path = realpath(buf, NULL);
1315 ptr = strrchr(buf, '/');
1317 llapi_error(LLAPI_MSG_ERROR |
1318 LLAPI_MSG_NO_ERRNO, 0,
1319 "cannot resolve path '%s'",
1324 path = realpath(buf, NULL);
1327 llapi_error(LLAPI_MSG_ERROR, rc,
1328 "cannot resolve path '%s'",
1334 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1339 int llapi_search_rootpath(char *pathname, const char *fsname)
1341 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1344 int llapi_getname(const char *path, char *buf, size_t size)
1346 struct obd_uuid uuid_buf;
1347 char *uuid = uuid_buf.uuid;
1350 memset(&uuid_buf, 0, sizeof(uuid_buf));
1351 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1355 /* We want to turn lustre-clilov-ffff88002738bc00 into
1356 * lustre-ffff88002738bc00. */
1358 nr = snprintf(buf, size, "%.*s-%s",
1359 (int) (strlen(uuid) - 24), uuid,
1360 uuid + strlen(uuid) - 16);
1369 * Get the list of pool members.
1370 * \param poolname string of format \<fsname\>.\<poolname\>
1371 * \param members caller-allocated array of char*
1372 * \param list_size size of the members array
1373 * \param buffer caller-allocated buffer for storing OST names
1374 * \param buffer_size size of the buffer
1376 * \return number of members retrieved for this pool
1377 * \retval -error failure
1379 int llapi_get_poolmembers(const char *poolname, char **members,
1380 int list_size, char *buffer, int buffer_size)
1382 char fsname[PATH_MAX];
1391 /* name is FSNAME.POOLNAME */
1392 if (strlen(poolname) >= sizeof(fsname))
1395 snprintf(fsname, sizeof(fsname), "%s", poolname);
1396 pool = strchr(fsname, '.');
1403 rc = poolpath(&pathname, fsname, NULL);
1405 llapi_error(LLAPI_MSG_ERROR, rc,
1406 "Lustre filesystem '%s' not found",
1411 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1412 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1413 cfs_free_param_data(&pathname);
1414 if (rc >= sizeof(buf))
1416 fd = fopen(buf, "r");
1419 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1424 while (fgets(buf, sizeof(buf), fd) != NULL) {
1425 if (nb_entries >= list_size) {
1429 buf[sizeof(buf) - 1] = '\0';
1431 tmp = strchr(buf, '\n');
1434 if (used + strlen(buf) + 1 > buffer_size) {
1439 strcpy(buffer + used, buf);
1440 members[nb_entries] = buffer + used;
1441 used += strlen(buf) + 1;
1451 * Get the list of pools in a filesystem.
1452 * \param name filesystem name or path
1453 * \param poollist caller-allocated array of char*
1454 * \param list_size size of the poollist array
1455 * \param buffer caller-allocated buffer for storing pool names
1456 * \param buffer_size size of the buffer
1458 * \return number of pools retrieved for this filesystem
1459 * \retval -error failure
1461 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1462 char *buffer, int buffer_size)
1464 char rname[PATH_MAX];
1469 struct dirent *pool;
1471 unsigned int nb_entries = 0;
1472 unsigned int used = 0;
1475 /* initialize output array */
1476 for (i = 0; i < list_size; i++)
1479 /* is name a pathname ? */
1480 ptr = strchr(name, '/');
1482 /* only absolute pathname is supported */
1486 if (!realpath(name, rname)) {
1488 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1493 fsname = strdup(rname);
1497 rc = poolpath(&pathname, NULL, rname);
1499 /* name is FSNAME */
1500 fsname = strdup(name);
1503 rc = poolpath(&pathname, fsname, NULL);
1506 llapi_error(LLAPI_MSG_ERROR, rc,
1507 "Lustre filesystem '%s' not found", name);
1511 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1512 dir = opendir(pathname.gl_pathv[0]);
1515 llapi_error(LLAPI_MSG_ERROR, rc,
1516 "Could not open pool list for '%s'",
1523 pool = readdir(dir);
1529 /* ignore . and .. */
1530 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1533 /* check output bounds */
1534 if (nb_entries >= list_size) {
1539 /* +2 for '.' and final '\0' */
1540 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1546 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1547 poollist[nb_entries] = buffer + used;
1548 used += strlen(pool->d_name) + strlen(fsname) + 2;
1554 llapi_error(LLAPI_MSG_ERROR, rc,
1555 "Error reading pool list for '%s'", name);
1558 cfs_free_param_data(&pathname);
1561 return rc != 0 ? rc : nb_entries;
1564 /* wrapper for lfs.c and obd.c */
1565 int llapi_poollist(const char *name)
1567 /* list of pool names (assume that pool count is smaller
1569 char **list, *buffer = NULL, *fsname = (char *)name;
1570 char *poolname = NULL, *tmp = NULL, data[16];
1571 enum param_filter type = FILTER_BY_PATH;
1572 int obdcount, bufsize, rc, nb, i;
1577 if (name[0] != '/') {
1578 fsname = strdup(name);
1582 poolname = strchr(fsname, '.');
1585 type = FILTER_BY_FS_NAME;
1588 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1589 data, sizeof(data));
1592 obdcount = atoi(data);
1594 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1595 * and also an array to store the pointers for all that
1596 * allocated space. */
1598 bufsize = sizeof(struct obd_uuid) * obdcount;
1599 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1600 if (buffer == NULL) {
1604 list = (char **) (buffer + bufsize);
1607 /* name is a path or fsname */
1608 nb = llapi_get_poollist(name, list, obdcount,
1611 /* name is a pool name (<fsname>.<poolname>) */
1612 nb = llapi_get_poolmembers(name, list, obdcount,
1616 if (nb == -EOVERFLOW) {
1619 goto retry_get_pools;
1622 for (i = 0; i < nb; i++)
1623 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1624 rc = (nb < 0 ? nb : 0);
1628 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1633 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1634 void *data, struct dirent64 *de);
1636 #define OBD_NOT_FOUND (-1)
1638 static int common_param_init(struct find_param *param, char *path)
1640 int lum_size = get_mds_md_size(path);
1645 /* migrate has fp_lmv_md initialized outside */
1646 if (param->fp_migrate)
1649 if (lum_size < PATH_MAX + 1)
1650 lum_size = PATH_MAX + 1;
1652 param->fp_lum_size = lum_size;
1653 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1654 if (param->fp_lmd == NULL) {
1655 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1656 "error: allocation of %zu bytes for ioctl",
1657 sizeof(lstat_t) + param->fp_lum_size);
1661 param->fp_lmv_stripe_count = 256;
1662 param->fp_lmv_md = calloc(1,
1663 lmv_user_md_size(param->fp_lmv_stripe_count,
1664 LMV_USER_MAGIC_SPECIFIC));
1665 if (param->fp_lmv_md == NULL) {
1666 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1667 "error: allocation of %d bytes for ioctl",
1668 lmv_user_md_size(param->fp_lmv_stripe_count,
1669 LMV_USER_MAGIC_SPECIFIC));
1673 param->fp_got_uuids = 0;
1674 param->fp_obd_indexes = NULL;
1675 param->fp_obd_index = OBD_NOT_FOUND;
1676 param->fp_mdt_index = OBD_NOT_FOUND;
1680 static void find_param_fini(struct find_param *param)
1682 if (param->fp_migrate)
1685 if (param->fp_obd_indexes)
1686 free(param->fp_obd_indexes);
1689 free(param->fp_lmd);
1691 if (param->fp_lmv_md)
1692 free(param->fp_lmv_md);
1695 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1696 struct dirent64 *de)
1698 struct find_param *param = data;
1704 /* set errno upon failure */
1705 static DIR *opendir_parent(const char *path)
1711 path_copy = strdup(path);
1712 if (path_copy == NULL)
1715 parent_path = dirname(path_copy);
1716 parent = opendir(parent_path);
1722 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1727 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1728 if (param->fp_get_default_lmv)
1729 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1731 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1733 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1734 if (errno == E2BIG && ret != 0) {
1738 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1739 if (stripe_count <= param->fp_lmv_stripe_count)
1742 free(param->fp_lmv_md);
1743 param->fp_lmv_stripe_count = stripe_count;
1744 lmv_size = lmv_user_md_size(stripe_count,
1745 LMV_USER_MAGIC_SPECIFIC);
1746 param->fp_lmv_md = malloc(lmv_size);
1747 if (param->fp_lmv_md == NULL) {
1748 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1749 "error: allocation of %d bytes for ioctl",
1750 lmv_user_md_size(param->fp_lmv_stripe_count,
1751 LMV_USER_MAGIC_SPECIFIC));
1759 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1760 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1762 struct lov_user_mds_data *lmd = lmdbuf;
1763 lstat_t *st = &lmd->lmd_st;
1766 if (parent_fd < 0 && dir_fd < 0)
1768 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1772 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1773 * and returns struct lov_user_mds_data, while
1774 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1776 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1777 LL_IOC_LOV_GETSTRIPE,
1779 } else if (parent_fd >= 0) {
1780 char *fname = strrchr(path, '/');
1782 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1783 * the parent directory) and returns struct lov_user_mds_data,
1784 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1786 * This avoids opening, locking, and closing each file on the
1787 * client if that is not needed. Multiple of these ioctl() can
1788 * be done on the parent dir with a single open for all
1789 * files in that directory, and it also doesn't pollute the
1790 * client dcache with millions of dentries when traversing
1791 * a large filesystem.
1793 fname = (fname == NULL ? path : fname + 1);
1795 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1798 else if (ret >= lmdlen || ret++ == 0)
1801 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1802 IOC_MDC_GETFILEINFO :
1803 IOC_MDC_GETFILESTRIPE, lmdbuf);
1806 if (ret && type == GET_LMD_INFO) {
1807 if (errno == ENOTTY) {
1808 /* ioctl is not supported, it is not a lustre fs.
1809 * Do the regular lstat(2) instead.
1811 ret = lstat_f(path, st);
1814 llapi_error(LLAPI_MSG_ERROR, ret,
1815 "error: %s: lstat failed for %s",
1818 } else if (errno == ENOENT) {
1820 llapi_error(LLAPI_MSG_WARN, ret,
1821 "warning: %s does not exist", path);
1822 } else if (errno != EISDIR && errno != ENODATA) {
1824 llapi_error(LLAPI_MSG_ERROR, ret,
1825 "%s ioctl failed for %s.",
1826 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1827 "IOC_MDC_GETFILEINFO", path);
1834 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1835 int lmdlen, enum get_lmd_info_type type)
1841 parent_fd = dirfd(parent);
1843 dir_fd = dirfd(dir);
1845 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1848 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1849 semantic_func_t sem_init,
1850 semantic_func_t sem_fini, void *data,
1851 struct dirent64 *de)
1853 struct find_param *param = (struct find_param *)data;
1854 struct dirent64 *dent;
1862 if (!d && errno != ENOTDIR) {
1864 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1867 } else if (!d && !parent) {
1868 /* ENOTDIR. Open the parent dir. */
1869 p = opendir_parent(path);
1876 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1882 while ((dent = readdir64(d)) != NULL) {
1885 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1889 if ((len + dent->d_reclen + 2) > size) {
1890 llapi_err_noerrno(LLAPI_MSG_ERROR,
1891 "error: %s: string buffer too small",
1896 strcat(path, dent->d_name);
1898 if (dent->d_type == DT_UNKNOWN) {
1899 lstat_t *st = ¶m->fp_lmd->lmd_st;
1901 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1902 param->fp_lum_size, GET_LMD_INFO);
1904 dent->d_type = IFTODT(st->st_mode);
1911 switch (dent->d_type) {
1913 llapi_err_noerrno(LLAPI_MSG_ERROR,
1914 "error: %s: '%s' is UNKNOWN type %d",
1915 __func__, dent->d_name, dent->d_type);
1918 rc = llapi_semantic_traverse(path, size, d, sem_init,
1919 sem_fini, data, dent);
1920 if (rc != 0 && ret == 0)
1926 rc = sem_init(path, d, NULL, data, dent);
1927 if (rc < 0 && ret == 0) {
1932 if (sem_fini && rc == 0)
1933 sem_fini(path, d, NULL, data, dent);
1941 sem_fini(path, parent, &d, data, de);
1950 static int param_callback(char *path, semantic_func_t sem_init,
1951 semantic_func_t sem_fini, struct find_param *param)
1953 int ret, len = strlen(path);
1956 if (len > PATH_MAX) {
1958 llapi_error(LLAPI_MSG_ERROR, ret,
1959 "Path name '%s' is too long", path);
1963 buf = (char *)malloc(PATH_MAX + 1);
1967 snprintf(buf, PATH_MAX + 1, "%s", path);
1968 ret = common_param_init(param, buf);
1972 param->fp_depth = 0;
1974 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1975 sem_fini, param, NULL);
1977 find_param_fini(param);
1979 return ret < 0 ? ret : 0;
1982 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1984 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1988 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
1993 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1995 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1998 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
2003 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
2007 fd = open(path, O_RDONLY | O_NONBLOCK);
2010 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2014 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2020 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2024 fd = open(path, O_RDONLY | O_NONBLOCK);
2027 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2031 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2043 * If uuidp is NULL, return the number of available obd uuids.
2044 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2045 * there are more OSTs than allocated to uuidp, then an error is returned with
2046 * the ost_count set to number of available obd uuids.
2048 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2049 int *ost_count, enum tgt_type type)
2051 char buf[PATH_MAX], format[32];
2052 int rc = 0, index = 0;
2053 struct obd_uuid name;
2057 /* Get the lov name */
2058 if (type == LOV_TYPE)
2059 rc = llapi_file_fget_lov_uuid(fd, &name);
2061 rc = llapi_file_fget_lmv_uuid(fd, &name);
2065 /* Now get the ost uuids */
2066 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2067 FILTER_BY_EXACT, "target_obd", ¶m);
2071 fp = fopen(param.gl_pathv[0], "r");
2074 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2079 snprintf(format, sizeof(format),
2080 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2081 while (fgets(buf, sizeof(buf), fp) != NULL) {
2082 if (uuidp && (index < *ost_count)) {
2083 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2091 if (uuidp && (index > *ost_count))
2096 cfs_free_param_data(¶m);
2100 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2102 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2105 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2110 root = open(mnt, O_RDONLY | O_DIRECTORY);
2113 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2118 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2126 /* Check if user specified value matches a real uuid. Ignore _UUID,
2127 * -osc-4ba41334, other trailing gunk in comparison.
2128 * @param real_uuid ends in "_UUID"
2129 * @param search_uuid may or may not end in "_UUID"
2131 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2133 int cmplen = strlen(real_uuid);
2134 int searchlen = strlen(search_uuid);
2136 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2138 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2141 /* The UUIDs may legitimately be different lengths, if
2142 * the system was upgraded from an older version. */
2143 if (cmplen != searchlen)
2146 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2149 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2150 * returned in param->fp_obd_index */
2151 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2153 struct obd_uuid obd_uuid;
2160 if (param->fp_got_uuids)
2163 /* Get the lov/lmv name */
2164 if (param->fp_get_lmv)
2165 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2167 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2169 if (rc != -ENOTTY) {
2170 llapi_error(LLAPI_MSG_ERROR, rc,
2171 "error: can't get %s name: %s",
2172 param->fp_get_lmv ? "lmv" : "lov",
2180 param->fp_got_uuids = 1;
2182 /* Now get the ost uuids */
2183 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2184 obd_uuid.uuid, FILTER_BY_EXACT,
2185 "target_obd", ¶m_data);
2189 fp = fopen(param_data.gl_pathv[0], "r");
2192 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2193 param_data.gl_pathv[0]);
2197 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2198 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2199 param->fp_get_lmv ? "MDTS" : "OBDS");
2201 snprintf(format, sizeof(format),
2202 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2203 while (fgets(buf, sizeof(buf), fp) != NULL) {
2206 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2209 if (param->fp_obd_uuid) {
2210 if (llapi_uuid_match(obd_uuid.uuid,
2211 param->fp_obd_uuid->uuid)) {
2212 param->fp_obd_index = index;
2215 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2216 /* Print everything */
2217 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2220 param->fp_obds_printed = 1;
2224 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2225 llapi_err_noerrno(LLAPI_MSG_ERROR,
2226 "error: %s: unknown obduuid: %s",
2227 __func__, param->fp_obd_uuid->uuid);
2231 cfs_free_param_data(¶m_data);
2235 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2236 * obd index for all these obduuids will be returned in
2237 * param->fp_obd_indexes */
2238 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2239 int num_obds, int **obdindexes, int *obdindex,
2242 int ret, obdcount, obd_valid = 0, obdnum;
2244 struct obd_uuid *uuids = NULL;
2248 if (type == LOV_TYPE)
2249 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2251 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2255 obdcount = atoi(buf);
2256 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2261 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2263 if (ret == -EOVERFLOW) {
2264 struct obd_uuid *uuids_temp;
2266 uuids_temp = realloc(uuids, obdcount *
2267 sizeof(struct obd_uuid));
2268 if (uuids_temp != NULL) {
2270 goto retry_get_uuids;
2275 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2279 indexes = malloc(num_obds * sizeof(*obdindex));
2280 if (indexes == NULL) {
2285 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2288 /* The user may have specified a simple index */
2289 i = strtol(obduuids[obdnum].uuid, &end, 0);
2290 if (end && *end == '\0' && i < obdcount) {
2291 indexes[obdnum] = i;
2294 for (i = 0; i < obdcount; i++) {
2295 if (llapi_uuid_match(uuids[i].uuid,
2296 obduuids[obdnum].uuid)) {
2297 indexes[obdnum] = i;
2303 if (i >= obdcount) {
2304 indexes[obdnum] = OBD_NOT_FOUND;
2305 llapi_err_noerrno(LLAPI_MSG_ERROR,
2306 "invalid obduuid '%s'",
2307 obduuids[obdnum].uuid);
2313 *obdindex = OBD_NOT_FOUND;
2315 *obdindex = obd_valid;
2317 *obdindexes = indexes;
2325 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2329 if (param->fp_mdt_uuid) {
2330 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2332 ¶m->fp_mdt_indexes,
2333 ¶m->fp_mdt_index, LMV_TYPE);
2338 if (param->fp_obd_uuid) {
2339 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2341 ¶m->fp_obd_indexes,
2342 ¶m->fp_obd_index, LOV_TYPE);
2347 param->fp_got_uuids = 1;
2352 int llapi_ostlist(char *path, struct find_param *param)
2357 fd = open(path, O_RDONLY | O_DIRECTORY);
2361 ret = setup_obd_uuid(fd, path, param);
2368 * Tries to determine the default stripe attributes for a given filesystem. The
2369 * filesystem to check should be specified by fsname, or will be determined
2372 static int sattr_get_defaults(const char *const fsname,
2373 unsigned int *scount,
2374 unsigned int *ssize,
2375 unsigned int *soffset)
2381 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2382 "stripecount", val, sizeof(val));
2385 *scount = atoi(val);
2389 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2390 "stripesize", val, sizeof(val));
2397 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2398 "stripeoffset", val, sizeof(val));
2401 *soffset = atoi(val);
2408 * Tries to gather the default stripe attributes for a given filesystem. If
2409 * the attributes can be determined, they are cached for easy retreival the
2410 * next time they are needed. Only a single filesystem's attributes are
2413 int sattr_cache_get_defaults(const char *const fsname,
2414 const char *const pathname, unsigned int *scount,
2415 unsigned int *ssize, unsigned int *soffset)
2418 char fsname[PATH_MAX + 1];
2419 unsigned int stripecount;
2420 unsigned int stripesize;
2421 unsigned int stripeoffset;
2427 char fsname_buf[PATH_MAX + 1];
2428 unsigned int tmp[3];
2430 if (fsname == NULL) {
2431 rc = llapi_search_fsname(pathname, fsname_buf);
2435 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2438 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2440 * Ensure all 3 sattrs (count, size, and offset) are
2441 * successfully retrieved and stored in tmp before writing to
2444 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2448 cache.stripecount = tmp[0];
2449 cache.stripesize = tmp[1];
2450 cache.stripeoffset = tmp[2];
2451 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2455 *scount = cache.stripecount;
2457 *ssize = cache.stripesize;
2459 *soffset = cache.stripeoffset;
2464 static char *layout2name(__u32 layout_pattern)
2466 if (layout_pattern == LOV_PATTERN_MDT)
2468 else if (layout_pattern == LOV_PATTERN_RAID0)
2470 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2476 enum lov_dump_flags {
2477 LDF_IS_DIR = 0x0001,
2478 LDF_IS_RAW = 0x0002,
2479 LDF_INDENT = 0x0004,
2480 LDF_SKIP_OBJS = 0x0008,
2484 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2485 struct lov_user_ost_data_v1 *objects,
2486 int verbose, int depth, char *pool_name,
2487 enum lov_dump_flags flags)
2489 bool is_dir = flags & LDF_IS_DIR;
2490 bool is_raw = flags & LDF_IS_RAW;
2491 bool indent = flags & LDF_INDENT;
2492 bool yaml = flags & LDF_YAML;
2493 bool skip_objs = flags & LDF_SKIP_OBJS;
2494 char *prefix = is_dir ? "" : "lmm_";
2495 char *separator = "";
2496 char *space = indent ? " " : "";
2499 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2500 lmm_oi_set_seq(&lum->lmm_oi, 0);
2501 if (!indent && (verbose & VERBOSE_DETAIL))
2502 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2505 if (!yaml && !indent && depth && path &&
2506 ((verbose != VERBOSE_OBJID) || !is_dir))
2507 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2509 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2510 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2511 space, prefix, lum->lmm_magic);
2512 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2514 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2515 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2517 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2519 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2524 if (verbose & ~VERBOSE_DFID)
2525 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2527 /* This needs a bit of hand-holding since old 1.x lmm_oi
2528 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2529 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2530 * a real FID. Ideally the 2.x code would have stored this
2531 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2532 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2533 * worked properly (especially since IGIF FIDs use mds_inum as
2534 * the FID SEQ), but unfortunately that didn't happen.
2536 * Print it to look like an IGIF FID, even though the fields
2537 * are reversed on disk, so that it makes sense to userspace.
2539 * Don't use ostid_id() and ostid_seq(), since they assume the
2540 * oi_fid fields are in the right order. This is why there are
2541 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2543 * For newer layout types hopefully this will be a real FID. */
2544 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2545 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2546 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2547 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2548 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2550 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2553 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2557 if (verbose & VERBOSE_COUNT) {
2558 if (verbose & ~VERBOSE_COUNT)
2559 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2562 if (!is_raw && lum->lmm_stripe_count == 0 &&
2563 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2564 unsigned int scount;
2565 rc = sattr_cache_get_defaults(NULL, path,
2569 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2572 llapi_error(LLAPI_MSG_ERROR, rc,
2573 "Cannot determine default"
2576 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2577 lum->lmm_stripe_count ==
2578 (typeof(lum->lmm_stripe_count))(-1)
2579 ? -1 : lum->lmm_stripe_count);
2582 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2583 (__s16)lum->lmm_stripe_count);
2585 if (!yaml && is_dir)
2591 if (verbose & VERBOSE_SIZE) {
2592 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2593 if (verbose & ~VERBOSE_SIZE)
2594 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2596 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2598 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2601 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2603 llapi_error(LLAPI_MSG_ERROR, rc,
2604 "Cannot determine default"
2607 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2608 lum->lmm_stripe_size);
2610 if (!yaml && is_dir)
2616 if ((verbose & VERBOSE_LAYOUT)) {
2617 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2618 if (verbose & ~VERBOSE_LAYOUT)
2619 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2621 if (lov_pattern_supported(lum->lmm_pattern))
2622 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2623 layout2name(lum->lmm_pattern));
2625 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2626 separator = (!yaml && is_dir) ? " " : "\n";
2629 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2630 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2631 if (verbose & ~VERBOSE_GENERATION)
2632 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2634 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2635 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2639 if (verbose & VERBOSE_OFFSET) {
2640 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2641 if (verbose & ~VERBOSE_OFFSET)
2642 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2644 if (is_dir || skip_objs)
2645 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2646 lum->lmm_stripe_offset ==
2647 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2648 lum->lmm_stripe_offset);
2649 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2650 llapi_printf(LLAPI_MSG_NORMAL, "0");
2652 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2653 objects[0].l_ost_idx);
2654 if (!yaml && is_dir)
2660 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2661 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2662 if (verbose & ~VERBOSE_POOL)
2663 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2665 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2666 if (!yaml && is_dir)
2672 if (strlen(separator) != 0)
2673 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2676 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2677 struct lov_user_ost_data_v1 *objects,
2678 char *path, int obdindex, int depth,
2679 int header, enum lov_dump_flags flags)
2681 bool is_dir = flags & LDF_IS_DIR;
2682 bool indent = flags & LDF_INDENT;
2683 bool skip_objs = flags & LDF_SKIP_OBJS;
2684 bool yaml = flags & LDF_YAML;
2685 bool obdstripe = obdindex == OBD_NOT_FOUND;
2688 if (!obdstripe && !skip_objs) {
2689 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2690 if (obdindex == objects[i].l_ost_idx) {
2700 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2703 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2704 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2705 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2706 char *space = " - ";
2709 llapi_printf(LLAPI_MSG_NORMAL,
2710 "%6slmm_objects:\n", " ");
2712 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2714 llapi_printf(LLAPI_MSG_NORMAL,
2715 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2717 for (i = 0; i < lum->lmm_stripe_count; i++) {
2718 int idx = objects[i].l_ost_idx;
2719 long long oid = ostid_id(&objects[i].l_ost_oi);
2720 long long gr = ostid_seq(&objects[i].l_ost_oi);
2722 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2726 struct lu_fid fid = { 0 };
2728 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2729 llapi_printf(LLAPI_MSG_NORMAL,
2730 "%sl_ost_idx: %d\n", space, idx);
2731 llapi_printf(LLAPI_MSG_NORMAL,
2732 "%8sl_fid: "DFID_NOBRACE"\n",
2734 } else if (indent) {
2735 struct lu_fid fid = { 0 };
2737 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2738 llapi_printf(LLAPI_MSG_NORMAL,
2739 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2740 space, i, idx, PFID(&fid));
2743 sprintf(fmt, "%s%s%s\n",
2744 "\t%6u\t%14llu\t%#13llx\t",
2745 (fid_seq_is_rsvd(gr) ||
2746 fid_seq_is_mdt0(gr)) ?
2747 "%14llu" : "%#14llx", "%s");
2748 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2750 obdindex == idx ? " *" : "");
2754 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2757 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2758 char *path, int obdindex, int depth, int verbose,
2759 enum lov_dump_flags flags)
2761 struct lmv_user_mds_data *objects = lum->lum_objects;
2762 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2763 char *separator = "";
2764 bool yaml = flags & LDF_YAML;
2765 bool obdstripe = false;
2768 if (obdindex != OBD_NOT_FOUND) {
2769 if (lum->lum_stripe_count == 0) {
2770 if (obdindex == lum->lum_stripe_offset)
2773 for (i = 0; i < lum->lum_stripe_count; i++) {
2774 if (obdindex == objects[i].lum_mds) {
2775 llapi_printf(LLAPI_MSG_NORMAL,
2790 /* show all information default */
2792 if (lum->lum_magic == LMV_USER_MAGIC)
2793 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2794 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2796 verbose = VERBOSE_OBJID;
2799 if (depth && path && ((verbose != VERBOSE_OBJID)))
2800 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2802 if (verbose & VERBOSE_COUNT) {
2803 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2804 if (verbose & ~VERBOSE_COUNT)
2805 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2806 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2807 (int)lum->lum_stripe_count);
2808 if ((verbose & VERBOSE_OFFSET) && !yaml)
2814 if (verbose & VERBOSE_OFFSET) {
2815 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2816 if (verbose & ~VERBOSE_OFFSET)
2817 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2818 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2819 (int)lum->lum_stripe_offset);
2820 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2826 if (verbose & VERBOSE_HASH_TYPE) {
2827 unsigned int type = lum->lum_hash_type;
2829 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2830 if (verbose & ~VERBOSE_HASH_TYPE)
2831 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2832 if (type < LMV_HASH_TYPE_MAX)
2833 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2834 mdt_hash_name[type]);
2836 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2841 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2842 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2843 if (lum->lum_stripe_count > 0)
2844 llapi_printf(LLAPI_MSG_NORMAL,
2845 "mdtidx\t\t FID[seq:oid:ver]\n");
2846 for (i = 0; i < lum->lum_stripe_count; i++) {
2847 int idx = objects[i].lum_mds;
2848 struct lu_fid *fid = &objects[i].lum_fid;
2849 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2850 llapi_printf(LLAPI_MSG_NORMAL,
2851 "%6u\t\t "DFID"\t\t%s\n",
2853 obdindex == idx ? " *" : "");
2858 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2859 pool_name[0] != '\0') {
2860 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2861 if (verbose & ~VERBOSE_POOL)
2862 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2864 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2868 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2869 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2872 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2873 enum lov_dump_flags flags)
2875 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2876 int depth = param->fp_max_depth;
2877 int verbose = param->fp_verbose;
2878 bool yaml = flags & LDF_YAML;
2880 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2881 !(flags & LDF_IS_DIR)) && !yaml)
2882 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2884 if (verbose & VERBOSE_DETAIL) {
2885 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2886 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2887 " ", comp_v1->lcm_magic);
2888 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2889 " ", comp_v1->lcm_size);
2890 if (flags & LDF_IS_DIR)
2891 llapi_printf(LLAPI_MSG_NORMAL,
2892 "%2slcm_flags: %s\n", " ",
2893 comp_v1->lcm_mirror_count > 0 ?
2896 llapi_printf(LLAPI_MSG_NORMAL,
2897 "%2slcm_flags: %s\n", " ",
2898 llapi_layout_flags_string(comp_v1->lcm_flags));
2901 if (verbose & VERBOSE_GENERATION) {
2902 if (verbose & ~VERBOSE_GENERATION)
2903 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2905 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2908 if (verbose & VERBOSE_MIRROR_COUNT) {
2909 if (verbose & ~VERBOSE_MIRROR_COUNT)
2910 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2912 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2913 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2914 comp_v1->lcm_mirror_count + 1 : 1);
2917 if (verbose & VERBOSE_COMP_COUNT) {
2918 if (verbose & ~VERBOSE_COMP_COUNT)
2919 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2921 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2922 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2923 comp_v1->lcm_entry_count : 0);
2926 if (verbose & VERBOSE_DETAIL && !yaml)
2927 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2930 static void lcme_flags2str(__u32 comp_flags)
2936 llapi_printf(LLAPI_MSG_NORMAL, "0");
2939 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2940 if (comp_flags & comp_flags_table[i].cfn_flag) {
2942 llapi_printf(LLAPI_MSG_NORMAL, ",");
2943 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2944 comp_flags_table[i].cfn_name);
2945 comp_flags &= ~comp_flags_table[i].cfn_flag;
2951 llapi_printf(LLAPI_MSG_NORMAL, ",");
2952 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2956 static void lov_dump_comp_v1_entry(struct find_param *param,
2957 enum lov_dump_flags flags, int index)
2959 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2960 struct lov_comp_md_entry_v1 *entry;
2961 char *separator = "";
2962 int verbose = param->fp_verbose;
2963 bool yaml = flags & LDF_YAML;
2965 entry = &comp_v1->lcm_entries[index];
2968 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2970 if (verbose & VERBOSE_COMP_ID) {
2971 if (verbose & VERBOSE_DETAIL && !yaml)
2972 llapi_printf(LLAPI_MSG_NORMAL,
2973 "%slcme_id: ", " - ");
2974 else if (verbose & ~VERBOSE_COMP_ID)
2975 llapi_printf(LLAPI_MSG_NORMAL,
2976 "%4slcme_id: ", " ");
2977 if (entry->lcme_id != LCME_ID_INVAL)
2978 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2980 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2984 if (verbose & VERBOSE_MIRROR_ID) {
2985 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2986 if (verbose & ~VERBOSE_MIRROR_ID)
2987 llapi_printf(LLAPI_MSG_NORMAL,
2988 "%4slcme_mirror_id: ", " ");
2989 if (entry->lcme_id != LCME_ID_INVAL)
2990 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2991 mirror_id_of(entry->lcme_id));
2993 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2997 if (verbose & VERBOSE_COMP_FLAGS) {
2998 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2999 if (verbose & ~VERBOSE_COMP_FLAGS)
3000 llapi_printf(LLAPI_MSG_NORMAL,
3001 "%4slcme_flags: ", " ");
3002 lcme_flags2str(entry->lcme_flags);
3006 if (verbose & VERBOSE_COMP_START) {
3007 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3008 if (verbose & ~VERBOSE_COMP_START)
3009 llapi_printf(LLAPI_MSG_NORMAL,
3010 "%4slcme_extent.e_start: ", " ");
3011 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3012 entry->lcme_extent.e_start);
3016 if (verbose & VERBOSE_COMP_END) {
3017 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3018 if (verbose & ~VERBOSE_COMP_END)
3019 llapi_printf(LLAPI_MSG_NORMAL,
3020 "%4slcme_extent.e_end: ", " ");
3021 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3022 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3024 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3025 entry->lcme_extent.e_end);
3030 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3031 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3032 } else if (verbose & VERBOSE_DETAIL) {
3033 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3034 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3035 " ", entry->lcme_offset);
3036 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3037 " ", entry->lcme_size);
3038 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3040 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3044 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3045 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3047 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3048 * The table below gives the answers for the specified parameters (value and
3049 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3050 * --------------------------------------
3051 * 1 | file > limit; sign > 0 | -1 / -1 |
3052 * 2 | file = limit; sign > 0 | -1 / -1 |
3053 * 3 | file < limit; sign > 0 | ? / 1 |
3054 * 4 | file > limit; sign = 0 | -1 / -1 |
3055 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3056 * 6 | file < limit; sign = 0 | ? / -1 |
3057 * 7 | file > limit; sign < 0 | 1 / 1 |
3058 * 8 | file = limit; sign < 0 | ? / -1 |
3059 * 9 | file < limit; sign < 0 | ? / -1 |
3060 * --------------------------------------
3061 * Note: 5th actually means that the value is within the interval
3062 * (limit - margin, limit]. */
3063 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3064 int sign, int negopt, unsigned long long margin,
3070 /* Drop the fraction of margin (of days). */
3071 if (file + margin <= limit)
3073 } else if (sign == 0) {
3074 if (file <= limit && file + margin > limit)
3076 else if (file + margin <= limit)
3078 } else if (sign < 0) {
3085 return negopt ? ~ret + 1 : ret;
3088 static inline struct lov_user_md *
3089 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3091 return (struct lov_user_md *)((char *)comp_v1 +
3092 comp_v1->lcm_entries[ent_idx].lcme_offset);
3095 static inline struct lov_user_ost_data_v1 *
3096 lov_v1v3_objects(struct lov_user_md *v1)
3098 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3099 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3101 return v1->lmm_objects;
3105 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3107 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3108 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3109 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3111 pool_name[0] = '\0';
3115 print_last_init_comp(struct find_param *param)
3117 /* print all component info */
3118 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3121 /* print specific component info */
3122 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3123 param->fp_check_comp_start || param->fp_check_comp_end ||
3124 param->fp_check_mirror_id || param->fp_check_mirror_index)
3130 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3134 if (param->fp_comp_end == LUSTRE_EOF) {
3135 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3136 match = end == LUSTRE_EOF ? 1 : -1;
3137 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3138 match = end == LUSTRE_EOF ? -1 : 1;
3139 else /* at least EOF */
3141 if (param->fp_exclude_comp_end)
3144 unsigned long long margin;
3146 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3147 match = find_value_cmp(end, param->fp_comp_end,
3148 param->fp_comp_end_sign,
3149 param->fp_exclude_comp_end, margin, 0);
3156 * An example of "getstripe -v" for a two components PFL file:
3159 * lcm_magic: 0x0BD60BD0
3163 * lcm_entry_count: 2
3167 * lcme_extent.e_start: 0
3168 * lcme_extent.e_end: 1048576
3172 * lmm_magic: 0x0BD10BD0
3173 * lmm_seq: 0x200000401
3174 * lmm_object_id: 0x1
3175 * lmm_fid: [0x200000401:0x1:0x0]
3176 * lmm_stripe_count: 1
3177 * lmm_stripe_size: 1048576
3178 * lmm_pattern: raid0
3180 * lmm_stripe_offset: 0
3182 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3186 * lcme_extent.e_start: 1048576
3187 * lcme_extent.e_end: EOF
3191 * lmm_magic: 0x0BD10BD0
3192 * lmm_seq: 0x200000401
3193 * lmm_object_id: 0x1
3194 * lmm_fid: [0x200000401:0x1:0x0]
3195 * lmm_stripe_count: 2
3196 * lmm_stripe_size: 1048576
3197 * lmm_pattern: raid0
3199 * lmm_stripe_offset: 1
3201 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3202 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3204 static void lov_dump_comp_v1(struct find_param *param, char *path,
3205 enum lov_dump_flags flags)
3207 struct lov_comp_md_entry_v1 *entry;
3208 struct lov_user_ost_data_v1 *objects;
3209 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3210 struct lov_user_md_v1 *v1;
3211 char pool_name[LOV_MAXPOOLNAME + 1];
3212 int obdindex = param->fp_obd_index;
3214 bool obdstripe = false;
3215 __u16 mirror_index = 0;
3216 __u16 mirror_id = 0;
3218 if (obdindex != OBD_NOT_FOUND) {
3219 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3220 i < comp_v1->lcm_entry_count; i++) {
3221 if (!(comp_v1->lcm_entries[i].lcme_flags &
3225 v1 = lov_comp_entry(comp_v1, i);
3226 objects = lov_v1v3_objects(v1);
3228 for (j = 0; j < v1->lmm_stripe_count; j++) {
3229 if (obdindex == objects[j].l_ost_idx) {
3242 lov_dump_comp_v1_header(param, path, flags);
3244 flags |= LDF_INDENT;
3246 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3247 entry = &comp_v1->lcm_entries[i];
3249 if (param->fp_check_comp_flags) {
3250 if (((param->fp_comp_flags & entry->lcme_flags) !=
3251 param->fp_comp_flags) ||
3252 (param->fp_comp_neg_flags & entry->lcme_flags))
3256 if (param->fp_check_comp_id &&
3257 param->fp_comp_id != entry->lcme_id)
3260 if (param->fp_check_comp_start) {
3261 match = find_value_cmp(entry->lcme_extent.e_start,
3262 param->fp_comp_start,
3263 param->fp_comp_start_sign,
3265 param->fp_comp_start_units, 0);
3270 if (param->fp_check_comp_end) {
3271 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3277 if (param->fp_check_mirror_index) {
3278 if (mirror_id != mirror_id_of(entry->lcme_id)) {
3280 mirror_id = mirror_id_of(entry->lcme_id);
3283 match = find_value_cmp(mirror_index,
3284 param->fp_mirror_index,
3285 param->fp_mirror_index_sign,
3286 param->fp_exclude_mirror_index,
3290 } else if (param->fp_check_mirror_id) {
3291 if (mirror_id != mirror_id_of(entry->lcme_id))
3292 mirror_id = mirror_id_of(entry->lcme_id);
3294 match = find_value_cmp(mirror_id,
3295 param->fp_mirror_id,
3296 param->fp_mirror_id_sign,
3297 param->fp_exclude_mirror_id,
3303 if (print_last_init_comp(param)) {
3305 * if part of stripe info is needed, we'd print only
3306 * the last instantiated component info.
3308 if (entry->lcme_flags & LCME_FL_INIT)
3314 if (entry->lcme_flags & LCME_FL_INIT) {
3315 if (obdindex != OBD_NOT_FOUND) {
3316 flags |= LDF_SKIP_OBJS;
3317 v1 = lov_comp_entry(comp_v1, i);
3318 objects = lov_v1v3_objects(v1);
3320 for (j = 0; j < v1->lmm_stripe_count; j++) {
3321 if (obdindex == objects[j].l_ost_idx) {
3322 flags &= ~LDF_SKIP_OBJS;
3327 flags &= ~LDF_SKIP_OBJS;
3330 flags |= LDF_SKIP_OBJS;
3333 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3335 lov_dump_comp_v1_entry(param, flags, i);
3337 v1 = lov_comp_entry(comp_v1, i);
3338 objects = lov_v1v3_objects(v1);
3339 lov_v1v3_pool_name(v1, pool_name);
3341 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3342 param->fp_max_depth, param->fp_verbose,
3345 if (print_last_init_comp(param)) {
3347 * directory layout contains only layout template, print the
3351 i = comp_v1->lcm_entry_count - 1;
3354 flags &= ~LDF_SKIP_OBJS;
3356 lov_dump_comp_v1_entry(param, flags, i);
3358 v1 = lov_comp_entry(comp_v1, i);
3359 objects = lov_v1v3_objects(v1);
3360 lov_v1v3_pool_name(v1, pool_name);
3362 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3363 param->fp_max_depth, param->fp_verbose,
3368 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3369 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3372 static inline bool has_any_comp_options(struct find_param *param)
3374 int verbose = param->fp_verbose;
3376 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3377 param->fp_check_comp_start || param->fp_check_comp_end ||
3378 param->fp_check_comp_flags)
3381 /* show full layout information, not component specific */
3382 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3385 return verbose & VERBOSE_COMP_OPTS;
3388 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3391 struct lov_user_md *lum = &orig->lmd_lmm;
3392 struct lov_user_mds_data *new;
3393 struct lov_comp_md_v1 *comp_v1;
3394 struct lov_comp_md_entry_v1 *ent;
3395 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3396 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3399 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3401 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3405 memcpy(new, orig, sizeof(lstat_t));
3407 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3408 comp_v1->lcm_magic = lum->lmm_magic;
3409 comp_v1->lcm_size = lum_off + lum_size;
3410 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3411 comp_v1->lcm_flags = 0;
3412 comp_v1->lcm_entry_count = 1;
3414 ent = &comp_v1->lcm_entries[0];
3416 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3417 ent->lcme_extent.e_start = 0;
3418 ent->lcme_extent.e_end = LUSTRE_EOF;
3419 ent->lcme_offset = lum_off;
3420 ent->lcme_size = lum_size;
3422 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3427 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3428 enum lov_dump_flags flags)
3430 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3432 if (has_any_comp_options(param)) {
3433 struct lov_user_mds_data *new_lmd, *orig_lmd;
3435 orig_lmd = param->fp_lmd;
3436 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3437 if (new_lmd != NULL) {
3438 param->fp_lmd = new_lmd;
3439 lov_dump_comp_v1(param, path, flags);
3440 param->fp_lmd = orig_lmd;
3446 if (magic == LOV_USER_MAGIC_V1) {
3447 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3448 param->fp_lmd->lmd_lmm.lmm_objects,
3449 path, param->fp_obd_index,
3450 param->fp_max_depth, param->fp_verbose,
3453 char pool_name[LOV_MAXPOOLNAME + 1];
3454 struct lov_user_ost_data_v1 *objects;
3455 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3457 snprintf(pool_name, sizeof(pool_name), "%s",
3458 lmmv3->lmm_pool_name);
3459 objects = lmmv3->lmm_objects;
3460 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3461 objects, path, param->fp_obd_index,
3462 param->fp_max_depth, param->fp_verbose,
3467 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3468 enum lov_dump_flags flags)
3472 if (param->fp_get_lmv || param->fp_get_default_lmv)
3473 magic = (__u32)param->fp_lmv_md->lum_magic;
3475 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3478 flags |= LDF_IS_RAW;
3483 case LOV_USER_MAGIC_V1:
3484 case LOV_USER_MAGIC_V3:
3485 case LOV_USER_MAGIC_SPECIFIC:
3486 lov_dump_plain_user_lmm(param, path, flags);
3489 case LMV_USER_MAGIC: {
3490 char pool_name[LOV_MAXPOOLNAME + 1];
3491 struct lmv_user_md *lum;
3493 lum = (struct lmv_user_md *)param->fp_lmv_md;
3494 snprintf(pool_name, sizeof(pool_name), "%s",
3495 lum->lum_pool_name);
3496 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3497 param->fp_max_depth, param->fp_verbose,
3501 case LOV_USER_MAGIC_COMP_V1:
3502 lov_dump_comp_v1(param, path, flags);
3505 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3506 "(expecting one of %#x %#x %#x %#x)\n",
3507 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3508 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3509 LMV_USER_MAGIC, LMV_MAGIC_V1);
3514 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3520 fname = strrchr(path, '/');
3522 /* It should be a file (or other non-directory) */
3523 if (fname == NULL) {
3524 dname = (char *)malloc(2);
3528 fname = (char *)path;
3530 dname = (char *)malloc(fname - path + 1);
3533 strncpy(dname, path, fname - path);
3534 dname[fname - path] = '\0';
3538 fd = open(dname, O_RDONLY | O_NONBLOCK);
3545 strcpy((char *)lum, fname);
3546 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3549 if (close(fd) == -1 && rc == 0)
3556 int llapi_file_lookup(int dirfd, const char *name)
3558 struct obd_ioctl_data data = { 0 };
3563 if (dirfd < 0 || name == NULL)
3566 data.ioc_version = OBD_IOCTL_VERSION;
3567 data.ioc_len = sizeof(data);
3568 data.ioc_inlbuf1 = (char *)name;
3569 data.ioc_inllen1 = strlen(name) + 1;
3571 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3573 llapi_error(LLAPI_MSG_ERROR, rc,
3574 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3579 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3585 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3586 * Return -1 or 1 if file timestamp does not or does match the given criteria
3587 * correspondingly. Return 0 if the MDS time is being checked and there are
3588 * attributes on OSTs and it is not yet clear if the timespamp matches.
3590 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3591 * updated timestamps. */
3592 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3597 /* Check if file is accepted. */
3598 if (param->fp_atime) {
3599 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3600 param->fp_asign, param->fp_exclude_atime,
3607 if (param->fp_mtime) {
3608 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3609 param->fp_msign, param->fp_exclude_mtime,
3614 /* If the previous check matches, but this one is not yet clear,
3615 * we should return 0 to do an RPC on OSTs. */
3620 if (param->fp_ctime) {
3621 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3622 param->fp_csign, param->fp_exclude_ctime,
3627 /* If the previous check matches, but this one is not yet clear,
3628 * we should return 0 to do an RPC on OSTs. */
3637 * Check whether the stripes matches the indexes user provided
3641 static int check_obd_match(struct find_param *param)
3643 struct lov_user_ost_data_v1 *objects;
3644 struct lov_comp_md_v1 *comp_v1 = NULL;
3645 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3646 lstat_t *st = ¶m->fp_lmd->lmd_st;
3647 int i, j, k, count = 1;
3649 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3652 if (!S_ISREG(st->st_mode))
3655 /* Only those files should be accepted, which have a
3656 * stripe on the specified OST. */
3657 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3658 comp_v1 = (struct lov_comp_md_v1 *)v1;
3659 count = comp_v1->lcm_entry_count;
3662 for (i = 0; i < count; i++) {
3664 v1 = lov_comp_entry(comp_v1, i);
3666 objects = lov_v1v3_objects(v1);
3668 for (j = 0; j < v1->lmm_stripe_count; j++) {
3669 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3672 for (k = 0; k < param->fp_num_obds; k++) {
3673 if (param->fp_obd_indexes[k] ==
3674 objects[j].l_ost_idx)
3675 return !param->fp_exclude_obd;
3680 return param->fp_exclude_obd;
3683 static int check_mdt_match(struct find_param *param)
3687 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3690 /* FIXME: For striped dir, we should get stripe information and check */
3691 for (i = 0; i < param->fp_num_mdts; i++) {
3692 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3693 return !param->fp_exclude_mdt;
3696 if (param->fp_exclude_mdt)
3703 * Check whether the obd is active or not, if it is
3704 * not active, just print the object affected by this
3707 static int print_failed_tgt(struct find_param *param, char *path, int type)
3709 struct obd_statfs stat_buf;
3710 struct obd_uuid uuid_buf;
3713 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3716 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3717 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3718 ret = llapi_obd_statfs(path, type,
3719 param->fp_obd_index, &stat_buf,
3722 llapi_printf(LLAPI_MSG_NORMAL,
3723 "obd_uuid: %s failed %s ",
3724 param->fp_obd_uuid->uuid,
3731 static int find_check_stripe_size(struct find_param *param)
3733 struct lov_comp_md_v1 *comp_v1 = NULL;
3734 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3735 int ret, i, count = 1;
3737 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3738 comp_v1 = (struct lov_comp_md_v1 *)v1;
3739 count = comp_v1->lcm_entry_count;
3740 ret = param->fp_exclude_stripe_size ? 1 : -1;
3743 for (i = 0; i < count; i++) {
3745 v1 = lov_comp_entry(comp_v1, i);
3747 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3748 param->fp_stripe_size_sign,
3749 param->fp_exclude_stripe_size,
3750 param->fp_stripe_size_units, 0);
3751 /* If any stripe_size matches */
3759 static __u32 find_get_stripe_count(struct find_param *param)
3761 struct lov_comp_md_v1 *comp_v1 = NULL;
3762 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3764 __u32 stripe_count = 0;
3766 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3767 comp_v1 = (struct lov_comp_md_v1 *)v1;
3768 count = comp_v1->lcm_entry_count;
3771 for (i = 0; i < count; i++) {
3773 v1 = lov_comp_entry(comp_v1, i);
3774 stripe_count += v1->lmm_stripe_count;
3777 return stripe_count;
3780 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3782 static int find_check_layout(struct find_param *param)
3784 struct lov_comp_md_v1 *comp_v1 = NULL;
3785 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3787 bool found = false, valid = false;
3789 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3790 comp_v1 = (struct lov_comp_md_v1 *)v1;
3791 count = comp_v1->lcm_entry_count;
3794 for (i = 0; i < count; i++) {
3796 v1 = lov_comp_entry(comp_v1, i);
3798 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3802 if (v1->lmm_pattern & param->fp_layout) {
3811 if ((found && !param->fp_exclude_layout) ||
3812 (!found && param->fp_exclude_layout))
3818 static int find_check_pool(struct find_param *param)
3820 struct lov_comp_md_v1 *comp_v1 = NULL;
3821 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3822 struct lov_user_md_v3 *v3 = (void *)v1;
3826 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3827 comp_v1 = (struct lov_comp_md_v1 *)v1;
3828 count = comp_v1->lcm_entry_count;
3829 /* empty requested pool is taken as no pool search */
3830 if (count == 0 && param->fp_poolname[0] == '\0')
3834 for (i = 0; i < count; i++) {
3835 if (comp_v1 != NULL)
3836 v1 = lov_comp_entry(comp_v1, i);
3838 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3839 (param->fp_poolname[0] == '\0')) ||
3840 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3841 (strncmp(v3->lmm_pool_name,
3842 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3843 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3844 (strcmp(param->fp_poolname, "*") == 0))) {
3850 if ((found && !param->fp_exclude_pool) ||
3851 (!found && param->fp_exclude_pool))
3857 static int find_check_comp_options(struct find_param *param)
3859 lstat_t *st = ¶m->fp_lmd->lmd_st;
3860 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3861 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3862 struct lov_comp_md_entry_v1 *entry;
3865 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3866 comp_v1 = (struct lov_comp_md_v1 *)v1;
3868 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3869 if (forged_v1 == NULL)
3871 comp_v1 = forged_v1;
3872 comp_v1->lcm_entry_count = 1;
3873 entry = &comp_v1->lcm_entries[0];
3874 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3875 entry->lcme_extent.e_start = 0;
3876 entry->lcme_extent.e_end = LUSTRE_EOF;
3879 /* invalid case, don't match for any kind of search. */
3880 if (comp_v1->lcm_entry_count == 0) {
3885 if (param->fp_check_comp_count) {
3886 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3887 param->fp_comp_count,
3888 param->fp_comp_count_sign,
3889 param->fp_exclude_comp_count, 1, 0);
3895 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3896 entry = &comp_v1->lcm_entries[i];
3898 if (param->fp_check_comp_flags) {
3900 if (((param->fp_comp_flags & entry->lcme_flags) !=
3901 param->fp_comp_flags) ||
3902 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3908 if (param->fp_check_comp_start) {
3909 ret = find_value_cmp(entry->lcme_extent.e_start,
3910 param->fp_comp_start,
3911 param->fp_comp_start_sign,
3912 param->fp_exclude_comp_start,
3913 param->fp_comp_start_units, 0);
3918 if (param->fp_check_comp_end) {
3919 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3925 /* the component matches all criteria */
3929 if (forged_v1 != NULL)
3934 static int find_check_mirror_options(struct find_param *param)
3936 struct lov_comp_md_v1 *comp_v1;
3937 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3940 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3943 comp_v1 = (struct lov_comp_md_v1 *)v1;
3945 if (param->fp_check_mirror_count) {
3946 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3947 param->fp_mirror_count,
3948 param->fp_mirror_count_sign,
3949 param->fp_exclude_mirror_count, 1, 0);
3954 if (param->fp_check_mirror_state) {
3956 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
3958 if ((param->fp_mirror_state != 0 &&
3959 file_state != param->fp_mirror_state) ||
3960 file_state == param->fp_mirror_neg_state)
3967 static bool find_check_lmm_info(struct find_param *param)
3969 return param->fp_check_pool || param->fp_check_stripe_count ||
3970 param->fp_check_stripe_size || param->fp_check_layout ||
3971 param->fp_check_comp_count || param->fp_check_comp_end ||
3972 param->fp_check_comp_start || param->fp_check_comp_flags ||
3973 param->fp_check_mirror_count ||
3974 param->fp_check_mirror_state ||
3975 param->fp_check_projid;
3979 * Get file/directory project id.
3980 * by the open fd resides on.
3981 * Return 0 and project id on success, or -ve errno.
3983 static int fget_projid(int fd, int *projid)
3988 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3992 *projid = fsx.fsx_projid;
3996 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3997 void *data, struct dirent64 *de)
3999 struct find_param *param = (struct find_param *)data;
4000 DIR *dir = dirp == NULL ? NULL : *dirp;
4001 int decision = 1; /* 1 is accepted; -1 is rejected. */
4002 lstat_t *st = ¶m->fp_lmd->lmd_st;
4004 int checked_type = 0;
4006 __u32 stripe_count = 0;
4009 if (parent == NULL && dir == NULL)
4012 /* If a regular expression is presented, make the initial decision */
4013 if (param->fp_pattern != NULL) {
4014 char *fname = strrchr(path, '/');
4015 fname = (fname == NULL ? path : fname + 1);
4016 ret = fnmatch(param->fp_pattern, fname, 0);
4017 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
4018 (ret == 0 && param->fp_exclude_pattern))
4022 /* See if we can check the file type from the dirent. */
4023 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
4026 if (DTTOIF(de->d_type) == param->fp_type) {
4027 if (param->fp_exclude_type)
4030 if (!param->fp_exclude_type)
4037 /* Request MDS for the stat info if some of these parameters need
4038 * to be compared. */
4039 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4040 param->fp_check_uid || param->fp_check_gid ||
4041 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4042 param->fp_check_size || param->fp_check_blocks ||
4043 find_check_lmm_info(param) ||
4044 param->fp_check_mdt_count || param->fp_check_hash_type)
4047 if (param->fp_type != 0 && checked_type == 0)
4050 if (decision == 0) {
4051 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4052 param->fp_get_lmv = 1;
4053 ret = cb_get_dirstripe(path, dir, param);
4058 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4059 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4060 param->fp_lum_size, GET_LMD_INFO);
4061 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4062 find_check_lmm_info(param)) {
4063 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4065 /* We need to "fake" the "use the default" values
4066 * since the lmm struct is zeroed out at this point. */
4067 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4068 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4070 ostid_set_seq(&lmm->lmm_oi,
4071 FID_SEQ_LOV_DEFAULT);
4072 lmm->lmm_stripe_size = 0;
4073 lmm->lmm_stripe_count = 0;
4074 lmm->lmm_stripe_offset = -1;
4076 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4078 ret = llapi_file_fget_mdtidx(dirfd(dir),
4079 ¶m->fp_file_mdt_index);
4080 } else if (S_ISREG(st->st_mode)) {
4081 /* FIXME: we could get the MDT index from the
4082 * file's FID in lmd->lmd_lmm.lmm_oi without
4083 * opening the file, once we are sure that
4084 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4085 * That would still be an ioctl() to map the
4086 * FID to the MDT, but not an open RPC. */
4087 fd = open(path, O_RDONLY);
4089 ret = llapi_file_fget_mdtidx(fd,
4090 ¶m->fp_file_mdt_index);
4095 /* For a special file, we assume it resides on
4096 * the same MDT as the parent directory. */
4097 ret = llapi_file_fget_mdtidx(dirfd(parent),
4098 ¶m->fp_file_mdt_index);
4109 stripe_count = find_get_stripe_count(param);
4113 if (param->fp_type && !checked_type) {
4114 if ((st->st_mode & S_IFMT) == param->fp_type) {
4115 if (param->fp_exclude_type)
4118 if (!param->fp_exclude_type)
4124 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4125 if (lustre_fs && param->fp_got_uuids &&
4126 param->fp_dev != st->st_dev) {
4127 /* A lustre/lustre mount point is crossed. */
4128 param->fp_got_uuids = 0;
4129 param->fp_obds_printed = 0;
4130 param->fp_mdt_index = OBD_NOT_FOUND;
4131 param->fp_obd_index = OBD_NOT_FOUND;
4134 if (lustre_fs && !param->fp_got_uuids) {
4135 ret = setup_target_indexes(dir ? dir : parent, path,
4140 param->fp_dev = st->st_dev;
4141 } else if (!lustre_fs && param->fp_got_uuids) {
4142 /* A lustre/non-lustre mount point is crossed. */
4143 param->fp_got_uuids = 0;
4144 param->fp_mdt_index = OBD_NOT_FOUND;
4145 param->fp_obd_index = OBD_NOT_FOUND;
4149 if (param->fp_check_stripe_size) {
4150 decision = find_check_stripe_size(param);
4155 if (param->fp_check_stripe_count) {
4156 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4157 param->fp_stripe_count_sign,
4158 param->fp_exclude_stripe_count, 1, 0);
4163 if (param->fp_check_mdt_count) {
4164 decision = find_value_cmp(
4165 param->fp_lmv_md->lum_stripe_count,
4166 param->fp_mdt_count,
4167 param->fp_mdt_count_sign,
4168 param->fp_exclude_mdt_count, 1, 0);
4173 if (param->fp_check_layout) {
4174 decision = find_check_layout(param);
4179 if (param->fp_check_hash_type) {
4182 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4183 if ((found && param->fp_exclude_hash_type) ||
4184 (!found && !param->fp_exclude_hash_type)) {
4190 /* If an OBD UUID is specified but none matches, skip this file. */
4191 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4192 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4195 /* If an OST or MDT UUID is given, and some OST matches,
4197 if (param->fp_obd_index != OBD_NOT_FOUND ||
4198 param->fp_mdt_index != OBD_NOT_FOUND) {
4199 if (param->fp_obd_uuid) {
4200 if (check_obd_match(param)) {
4201 /* If no mdtuuid is given, we are done.
4202 * Otherwise, fall through to the mdtuuid
4204 if (!param->fp_mdt_uuid)
4211 if (param->fp_mdt_uuid) {
4212 if (check_mdt_match(param))
4219 if (param->fp_check_uid) {
4220 if (st->st_uid == param->fp_uid) {
4221 if (param->fp_exclude_uid)
4224 if (!param->fp_exclude_uid)
4229 if (param->fp_check_gid) {
4230 if (st->st_gid == param->fp_gid) {
4231 if (param->fp_exclude_gid)
4234 if (!param->fp_exclude_gid)
4239 if (param->fp_check_projid) {
4243 fd = open(path, O_RDONLY);
4246 ret = fget_projid(fd, &projid);
4251 if (projid == param->fp_projid) {
4252 if (param->fp_exclude_uid)
4255 if (!param->fp_exclude_projid)
4260 if (param->fp_check_pool) {
4261 decision = find_check_pool(param);
4266 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4267 param->fp_check_comp_start || param->fp_check_comp_end) {
4268 decision = find_check_comp_options(param);
4273 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4274 decision = find_check_mirror_options(param);
4279 /* Check the time on mds. */
4281 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4284 for_mds = lustre_fs ?
4285 (S_ISREG(st->st_mode) && stripe_count) : 0;
4286 decision = find_time_check(st, param, for_mds);
4291 /* If file still fits the request, ask ost for updated info.
4292 The regular stat is almost of the same speed as some new
4293 'glimpse-size-ioctl'. */
4295 if ((param->fp_check_size || param->fp_check_blocks) &&
4296 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4300 /* For regular files with the stripe the decision may have not
4301 * been taken yet if *time or size is to be checked. */
4302 if (param->fp_obd_index != OBD_NOT_FOUND)
4303 print_failed_tgt(param, path, LL_STATFS_LOV);
4305 if (param->fp_mdt_index != OBD_NOT_FOUND)
4306 print_failed_tgt(param, path, LL_STATFS_LMV);
4309 ret = fstat_f(dirfd(dir), st);
4310 else if (de != NULL)
4311 ret = fstatat_f(dirfd(parent), de->d_name, st,
4312 AT_SYMLINK_NOFOLLOW);
4314 ret = lstat_f(path, st);
4317 if (errno == ENOENT) {
4318 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4319 "warning: %s: %s does not exist",
4324 llapi_error(LLAPI_MSG_ERROR, ret,
4325 "%s: IOC_LOV_GETINFO on %s failed",
4331 /* Check the time on osc. */
4332 decision = find_time_check(st, param, 0);
4337 if (param->fp_check_size) {
4338 decision = find_value_cmp(st->st_size, param->fp_size,
4339 param->fp_size_sign,
4340 param->fp_exclude_size,
4341 param->fp_size_units, 0);
4346 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4347 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4348 param->fp_blocks_sign,
4349 param->fp_exclude_blocks,
4350 param->fp_blocks_units, 0);
4355 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4356 if (param->fp_zero_end)
4357 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4359 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4363 /* Do not get down anymore? */
4364 if (param->fp_depth == param->fp_max_depth) {
4375 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4376 void *param_data, struct dirent64 *de)
4378 struct find_param *param = (struct find_param *)param_data;
4379 struct lmv_user_md *lmu = param->fp_lmv_md;
4380 DIR *tmp_parent = parent;
4381 char raw[MAX_IOC_BUFLEN] = {'\0'};
4383 struct obd_ioctl_data data = { 0 };
4390 if (parent == NULL && dirp == NULL)
4399 if (parent == NULL) {
4400 tmp_parent = opendir_parent(path);
4401 if (tmp_parent == NULL) {
4404 llapi_error(LLAPI_MSG_ERROR, ret,
4405 "can not open %s", path);
4410 fd = dirfd(tmp_parent);
4412 path_copy = strdup(path);
4413 filename = basename(path_copy);
4415 data.ioc_inlbuf1 = (char *)filename;
4416 data.ioc_inllen1 = strlen(filename) + 1;
4417 data.ioc_inlbuf2 = (char *)lmu;
4418 data.ioc_inllen2 = lmv_user_md_size(lmu->lum_stripe_count,
4420 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4422 llapi_error(LLAPI_MSG_ERROR, ret,
4423 "llapi_obd_statfs: error packing ioctl data");
4428 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4430 if (errno == EBUSY && !retry) {
4431 /* because migrate may not be able to lock all involved
4432 * objects in order, for some of them it try lock, while
4433 * there may be conflicting COS locks and cause migrate
4434 * fail with EBUSY, hope a sync() could cause
4435 * transaction commit and release these COS locks. */
4439 } else if (errno == EALREADY) {
4440 if (param->fp_verbose & VERBOSE_DETAIL)
4442 "%s was migrated to MDT%d already\n",
4443 path, lmu->lum_stripe_offset);
4447 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4448 path, strerror(-ret), ret);
4451 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4452 fprintf(stdout, "migrate %s to MDT%d stripe count %d\n",
4453 path, lmu->lum_stripe_offset, lmu->lum_stripe_count);
4458 /* If the directory is being migration, we need
4459 * close the directory after migration,
4460 * so the old directory cache will be cleanup
4461 * on the client side, and re-open to get the
4462 * new directory handle */
4463 *dirp = opendir(path);
4464 if (*dirp == NULL) {
4466 llapi_error(LLAPI_MSG_ERROR, ret,
4467 "%s: Failed to open '%s'", __func__, path);
4472 closedir(tmp_parent);
4479 /* dir migration finished, shrink its stripes */
4480 static int cb_migrate_mdt_fini(char *path, DIR *parent, DIR **dirp, void *data,
4481 struct dirent64 *de)
4483 struct find_param *param = data;
4484 struct lmv_user_md *lmu = param->fp_lmv_md;
4485 int lmulen = lmv_user_md_size(lmu->lum_stripe_count, lmu->lum_magic);
4488 if (de && de->d_type != DT_DIR)
4493 * close it before setxattr because the latter may destroy the
4494 * original object, and cause close fail.
4496 ret = closedir(*dirp);
4502 ret = setxattr(path, XATTR_NAME_LMV, lmu, lmulen, 0);
4503 if (ret == -EALREADY)
4506 cb_common_fini(path, parent, dirp, data, de);
4510 int llapi_migrate_mdt(char *path, struct find_param *param)
4512 return param_callback(path, cb_migrate_mdt_init, cb_migrate_mdt_fini,
4516 int llapi_mv(char *path, struct find_param *param)
4518 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4519 static bool printed;
4522 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4523 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4527 return llapi_migrate_mdt(path, param);
4530 int llapi_find(char *path, struct find_param *param)
4532 return param_callback(path, cb_find_init, cb_common_fini, param);
4536 * Get MDT number that the file/directory inode referenced
4537 * by the open fd resides on.
4538 * Return 0 and mdtidx on success, or -ve errno.
4540 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4542 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4547 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4548 struct dirent64 *de)
4550 struct find_param *param = (struct find_param *)data;
4551 DIR *d = dirp == NULL ? NULL : *dirp;
4555 if (parent == NULL && d == NULL)
4559 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4560 } else /* if (parent) */ {
4563 fd = open(path, O_RDONLY | O_NOCTTY);
4565 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4573 if (ret == -ENODATA) {
4574 if (!param->fp_obd_uuid)
4575 llapi_printf(LLAPI_MSG_NORMAL,
4576 "'%s' has no stripe info\n", path);
4578 } else if (ret == -ENOENT) {
4579 llapi_error(LLAPI_MSG_WARN, ret,
4580 "warning: %s: '%s' does not exist",
4583 } else if (ret == -ENOTTY) {
4584 llapi_error(LLAPI_MSG_ERROR, ret,
4585 "%s: '%s' not on a Lustre fs",
4588 llapi_error(LLAPI_MSG_ERROR, ret,
4589 "error: %s: '%s' failed get_mdtidx",
4595 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4596 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4598 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4602 /* Do not go down anymore? */
4603 if (param->fp_depth == param->fp_max_depth)
4611 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4612 struct dirent64 *de)
4614 struct find_param *param = (struct find_param *)data;
4615 DIR *d = dirp == NULL ? NULL : *dirp;
4618 if (parent == NULL && d == NULL)
4621 if (param->fp_obd_uuid) {
4622 param->fp_quiet = 1;
4623 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4628 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4629 ret = cb_get_dirstripe(path, d, param);
4631 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4632 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4633 param->fp_lum_size, GET_LMD_STRIPE);
4638 if (errno == ENODATA && d != NULL) {
4639 /* We need to "fake" the "use the default" values
4640 * since the lmm struct is zeroed out at this point.
4641 * The magic needs to be set in order to satisfy
4642 * a check later on in the code path.
4643 * The object_seq needs to be set for the "(Default)"
4644 * prefix to be displayed. */
4645 if (param->fp_get_default_lmv) {
4646 struct lmv_user_md *lum = param->fp_lmv_md;
4648 lum->lum_magic = LMV_USER_MAGIC;
4649 lum->lum_stripe_count = 0;
4650 lum->lum_stripe_offset = -1;
4652 } else if (param->fp_get_lmv) {
4653 struct lmv_user_md *lum = param->fp_lmv_md;
4656 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4659 lum->lum_magic = LMV_MAGIC_V1;
4660 lum->lum_stripe_count = 0;
4661 lum->lum_stripe_offset = mdtidx;
4664 struct lov_user_md *lmm =
4665 ¶m->fp_lmd->lmd_lmm;
4667 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4669 ostid_set_seq(&lmm->lmm_oi,
4670 FID_SEQ_LOV_DEFAULT);
4671 lmm->lmm_stripe_count = 0;
4672 lmm->lmm_stripe_size = 0;
4673 lmm->lmm_stripe_offset = -1;
4676 } else if (errno == ENODATA && parent != NULL) {
4677 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4678 llapi_printf(LLAPI_MSG_NORMAL,
4679 "%s has no stripe info\n", path);
4681 } else if (errno == ENOENT) {
4682 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4683 "warning: %s: %s does not exist",
4686 } else if (errno == ENOTTY) {
4688 llapi_error(LLAPI_MSG_ERROR, ret,
4689 "%s: '%s' not on a Lustre fs?",
4694 llapi_error(LLAPI_MSG_ERROR, ret,
4695 "error: %s: %s failed for %s",
4696 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4697 "IOC_MDC_GETFILESTRIPE", path);
4704 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4705 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4708 /* Do not get down anymore? */
4709 if (param->fp_depth == param->fp_max_depth)
4717 int llapi_getstripe(char *path, struct find_param *param)
4719 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4720 cb_get_mdt_index : cb_getstripe,
4721 cb_common_fini, param);
4724 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4725 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4727 char raw[MAX_IOC_BUFLEN] = {'\0'};
4729 struct obd_ioctl_data data = { 0 };
4732 data.ioc_inlbuf1 = (char *)&type;
4733 data.ioc_inllen1 = sizeof(__u32);
4734 data.ioc_inlbuf2 = (char *)&index;
4735 data.ioc_inllen2 = sizeof(__u32);
4736 data.ioc_pbuf1 = (char *)stat_buf;
4737 data.ioc_plen1 = sizeof(struct obd_statfs);
4738 data.ioc_pbuf2 = (char *)uuid_buf;
4739 data.ioc_plen2 = sizeof(struct obd_uuid);
4741 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4743 llapi_error(LLAPI_MSG_ERROR, rc,
4744 "llapi_obd_statfs: error packing ioctl data");
4748 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4750 return rc < 0 ? -errno : 0;
4753 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4754 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4759 fd = open(path, O_RDONLY);
4762 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4764 /* If we can't even open a file on the filesystem (e.g. with
4765 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4769 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4776 #define MAX_STRING_SIZE 128
4778 int llapi_ping(char *obd_type, char *obd_name)
4784 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4785 obd_type, obd_name);
4789 fd = open(path.gl_pathv[0], O_WRONLY);
4792 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4797 /* The purpose is to send a byte as a ping, whatever this byte is. */
4798 /* coverity[uninit_use_in_call] */
4799 rc = write(fd, buf, 1);
4807 cfs_free_param_data(&path);
4811 int llapi_target_iterate(int type_num, char **obd_type,
4812 void *args, llapi_cb_t cb)
4814 char buf[MAX_STRING_SIZE];
4819 rc = cfs_get_param_paths(¶m, "devices");
4823 fp = fopen(param.gl_pathv[0], "r");
4826 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4831 while (fgets(buf, sizeof(buf), fp) != NULL) {
4832 char *obd_type_name = NULL;
4833 char *obd_name = NULL;
4834 char *obd_uuid = NULL;
4836 struct obd_statfs osfs_buffer;
4838 while(bufp[0] == ' ')
4841 for(i = 0; i < 3; i++) {
4842 obd_type_name = strsep(&bufp, " ");
4844 obd_name = strsep(&bufp, " ");
4845 obd_uuid = strsep(&bufp, " ");
4847 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4849 for (i = 0; i < type_num; i++) {
4850 if (strcmp(obd_type_name, obd_type[i]) != 0)
4853 cb(obd_type_name, obd_name, obd_uuid, args);
4858 cfs_free_param_data(¶m);
4862 static void do_target_check(char *obd_type_name, char *obd_name,
4863 char *obd_uuid, void *args)
4867 rc = llapi_ping(obd_type_name, obd_name);
4868 if (rc == ENOTCONN) {
4869 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4871 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4873 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4877 int llapi_target_check(int type_num, char **obd_type, char *dir)
4879 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4882 #undef MAX_STRING_SIZE
4884 /* Is this a lustre fs? */
4885 int llapi_is_lustre_mnttype(const char *type)
4887 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4890 /* Is this a lustre client fs? */
4891 int llapi_is_lustre_mnt(struct mntent *mnt)
4893 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4894 strstr(mnt->mnt_fsname, ":/") != NULL);
4897 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4899 char fsname[PATH_MAX + 1];
4903 rc = llapi_search_fsname(mnt, fsname);
4907 root = open(mnt, O_RDONLY | O_DIRECTORY);
4910 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4914 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4922 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4923 * format must have %s%s, buf must be > 16
4924 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4925 * then buf = "lustre-MDT0000"
4927 static int get_mdtname(char *name, char *format, char *buf)
4929 char suffix[]="-MDT0000";
4930 int len = strlen(name);
4932 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4933 name[len - 5] = '\0';
4938 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4941 /* Not enough room to add suffix */
4942 llapi_err_noerrno(LLAPI_MSG_ERROR,
4943 "Invalid MDT name |%s|", name);
4948 return sprintf(buf, format, name, suffix);
4951 /** ioctl on filsystem root, with mdtindex sent as data
4952 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4953 * \param mdtidxp pointer to integer within data to be filled in with the
4954 * mdt index (0 if no mdt is specified). NULL won't be filled.
4956 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4964 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4965 Open root and parse mdt index. */
4966 if (mdtname[0] == '/') {
4968 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4969 (char *)mdtname, -1);
4971 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4973 ptr = fsname + strlen(fsname) - 8;
4975 index = strtol(ptr + 4, NULL, 16);
4976 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4980 llapi_err_noerrno(LLAPI_MSG_ERROR,
4981 "Can't open %s: %d\n", mdtname, rc);
4988 rc = ioctl(fd, opc, data);
4997 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4998 int buflen, long long *recno, int *linkno)
5000 const char *fidstr_orig = fidstr;
5002 struct getinfo_fid2path *gf;
5007 while (*fidstr == '[')
5010 sscanf(fidstr, SFID, RFID(&fid));
5011 if (!fid_is_sane(&fid)) {
5012 llapi_err_noerrno(LLAPI_MSG_ERROR,
5013 "bad FID format '%s', should be [seq:oid:ver]"
5014 " (e.g. "DFID")\n", fidstr_orig,
5015 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
5019 gf = malloc(sizeof(*gf) + buflen);
5024 gf->gf_recno = *recno;
5025 gf->gf_linkno = *linkno;
5026 gf->gf_pathlen = buflen;
5028 /* Take path or fsname */
5029 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
5034 /* strip out instances of // */
5035 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
5036 if ((*a == '/') && (*(a + 1) == '/'))
5043 if (buf[0] == '\0') { /* ROOT path */
5048 *recno = gf->gf_recno;
5049 *linkno = gf->gf_linkno;
5056 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
5059 struct lustre_mdt_attrs *lma;
5063 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
5065 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
5068 lma = (struct lustre_mdt_attrs *)buf;
5069 fid_le_to_cpu(fid, &lma->lma_self_fid);
5073 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
5078 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5087 int llapi_fd2fid(int fd, struct lu_fid *fid)
5091 memset(fid, 0, sizeof(*fid));
5093 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5094 if (rc == -EINVAL || rc == -ENOTTY)
5095 rc = fid_from_lma(NULL, fd, fid);
5100 int llapi_path2fid(const char *path, struct lu_fid *fid)
5104 memset(fid, 0, sizeof(*fid));
5105 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5107 if (errno == ELOOP || errno == ENXIO)
5108 return fid_from_lma(path, -1, fid);
5112 rc = llapi_fd2fid(fd, fid);
5113 if (rc == -EINVAL || rc == -ENOTTY)
5114 rc = fid_from_lma(path, -1, fid);
5120 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5121 char *name, size_t name_size)
5123 struct getparent *gp;
5126 gp = malloc(sizeof(*gp) + name_size);
5130 gp->gp_linkno = linkno;
5131 gp->gp_name_size = name_size;
5133 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5139 *parent_fid = gp->gp_fid;
5141 strncpy(name, gp->gp_name, name_size);
5142 name[name_size - 1] = '\0';
5149 int llapi_path2parent(const char *path, unsigned int linkno,
5150 struct lu_fid *parent_fid, char *name, size_t name_size)
5155 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5159 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5164 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5169 root = open(mnt, O_RDONLY | O_DIRECTORY);
5172 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5176 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5179 llapi_error(LLAPI_MSG_ERROR, rc,
5180 "ioctl on %s for getting connect flags failed", mnt);
5187 * Get a 64-bit value representing the version of file data pointed by fd.
5189 * Each write or truncate, flushed on OST, will change this value. You can use
5190 * this value to verify if file data was modified. This only checks the file
5191 * data, not metadata.
5193 * \param flags 0: no flush pages, usually used it the process has already
5195 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5197 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5198 * pages from clients.
5200 * \retval 0 on success.
5201 * \retval -errno on error.
5203 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5206 struct ioc_data_version idv;
5208 idv.idv_flags = (__u32)flags;
5210 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5214 *data_version = idv.idv_version;
5220 * Flush cached pages from all clients.
5222 * \param fd File descriptor
5226 int llapi_file_flush(int fd)
5230 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5234 * Fetch layout version from OST objects. Layout version on OST objects are
5235 * only set when the file is a mirrored file AND after the file has been
5236 * written at least once.
5238 * It actually fetches the least layout version from the objects.
5240 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5243 struct ioc_data_version idv = { 0 };
5245 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5249 *layout_version = idv.idv_layout_version;
5255 * Create a file without any name open it for read/write
5257 * - file is created as if it were a standard file in the given \a directory
5258 * - file does not appear in \a directory and mtime does not change because
5259 * the filename is handled specially by the Lustre MDS.
5260 * - file is removed at final close
5261 * - file modes are rw------- since it doesn't make sense to have a read-only
5262 * or write-only file that cannot be opened again.
5263 * - if user wants another mode it must use fchmod() on the open file, no
5264 * security problems arise because it cannot be opened by another process.
5266 * \param[in] directory directory from which to inherit layout/MDT idx
5267 * \param[in] idx MDT index on which the file is created,
5268 * \a idx == -1 means no specific MDT is requested
5269 * \param[in] open_flags standard open(2) flags
5271 * \retval 0 on success.
5272 * \retval -errno on error.
5274 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5276 char file_path[PATH_MAX];
5277 char filename[PATH_MAX];
5278 int saved_errno = errno;
5286 snprintf(filename, sizeof(filename),
5287 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5289 snprintf(filename, sizeof(filename),
5290 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5292 rc = snprintf(file_path, sizeof(file_path),
5293 "%s/%s", directory, filename);
5294 if (rc >= sizeof(file_path))
5297 fd = open(file_path,
5298 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5300 } while (fd < 0 && errno == EEXIST);
5303 llapi_error(LLAPI_MSG_ERROR, errno,
5304 "Cannot create volatile file '%s' in '%s'",
5305 filename + LUSTRE_VOLATILE_HDR_LEN,
5310 /* Unlink file in case this wasn't a Lustre filesystem and the
5311 * magic volatile filename wasn't handled as intended. The
5312 * effect is the same. If volatile open was supported then we
5313 * expect unlink() to return -ENOENT. */
5314 (void)unlink(file_path);
5316 /* Since we are returning successfully we restore errno (and
5317 * mask out possible EEXIST from open() and ENOENT from
5319 errno = saved_errno;
5325 * Swap the layouts between 2 file descriptors
5326 * the 2 files must be open for writing
5327 * first fd received the ioctl, second fd is passed as arg
5328 * this is assymetric but avoid use of root path for ioctl
5330 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5331 int gid, __u64 flags)
5333 struct lustre_swap_layouts lsl;
5338 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5339 rc = fstat(fd1, &st1);
5343 rc = fstat(fd2, &st2);
5348 lsl.sl_flags = flags;
5352 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5356 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5357 struct timeval tv1[2];
5358 struct timeval tv2[2];
5360 memset(tv1, 0, sizeof(tv1));
5361 memset(tv2, 0, sizeof(tv2));
5363 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5364 tv1[0].tv_sec = st1.st_atime;
5365 tv2[0].tv_sec = st2.st_atime;
5367 tv1[0].tv_sec = st2.st_atime;
5368 tv2[0].tv_sec = st1.st_atime;
5371 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5372 tv1[1].tv_sec = st1.st_mtime;
5373 tv2[1].tv_sec = st2.st_mtime;
5375 tv1[1].tv_sec = st2.st_mtime;
5376 tv2[1].tv_sec = st1.st_mtime;
5379 rc = futimes(fd1, tv1);
5383 rc = futimes(fd2, tv2);
5391 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5398 while (grp_id == 0);
5400 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5408 * Swap the layouts between 2 files
5409 * the 2 files are open in write
5411 int llapi_swap_layouts(const char *path1, const char *path2,
5412 __u64 dv1, __u64 dv2, __u64 flags)
5416 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5419 llapi_error(LLAPI_MSG_ERROR, rc,
5420 "error: cannot open '%s' for write", path1);
5424 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5427 llapi_error(LLAPI_MSG_ERROR, rc,
5428 "error: cannot open '%s' for write", path2);
5432 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5434 llapi_error(LLAPI_MSG_ERROR, rc,
5435 "error: cannot swap layout between '%s' and '%s'",
5446 * Attempt to open a file with Lustre file identifier \a fid
5447 * and return an open file descriptor.
5449 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5450 * \param[in] fid Lustre file identifier of file to open
5451 * \param[in] flags open() flags
5453 * \retval non-negative file descriptor on successful open
5454 * \retval -1 if an error occurred
5456 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5459 char mntdir[PATH_MAX];
5460 char path[PATH_MAX];
5463 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5467 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5468 return open(path, flags);
5474 * \param fd File to lock.
5475 * \param gid Group Identifier.
5477 * \retval 0 on success.
5478 * \retval -errno on failure.
5480 int llapi_group_lock(int fd, int gid)
5484 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5487 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5495 * \param fd File to unlock.
5496 * \param gid Group Identifier.
5498 * \retval 0 on success.
5499 * \retval -errno on failure.
5501 int llapi_group_unlock(int fd, int gid)
5505 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5508 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");