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)
1930 if (sem_fini && rc == 0)
1931 sem_fini(path, d, NULL, data, dent);
1939 sem_fini(path, parent, &d, data, de);
1948 static int param_callback(char *path, semantic_func_t sem_init,
1949 semantic_func_t sem_fini, struct find_param *param)
1951 int ret, len = strlen(path);
1954 if (len > PATH_MAX) {
1956 llapi_error(LLAPI_MSG_ERROR, ret,
1957 "Path name '%s' is too long", path);
1961 buf = (char *)malloc(PATH_MAX + 1);
1965 snprintf(buf, PATH_MAX + 1, "%s", path);
1966 ret = common_param_init(param, buf);
1970 param->fp_depth = 0;
1972 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1973 sem_fini, param, NULL);
1975 find_param_fini(param);
1977 return ret < 0 ? ret : 0;
1980 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1982 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1986 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
1991 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1993 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1996 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
2001 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
2005 fd = open(path, O_RDONLY | O_NONBLOCK);
2008 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2012 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2018 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2022 fd = open(path, O_RDONLY | O_NONBLOCK);
2025 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2029 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2041 * If uuidp is NULL, return the number of available obd uuids.
2042 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2043 * there are more OSTs than allocated to uuidp, then an error is returned with
2044 * the ost_count set to number of available obd uuids.
2046 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2047 int *ost_count, enum tgt_type type)
2049 char buf[PATH_MAX], format[32];
2050 int rc = 0, index = 0;
2051 struct obd_uuid name;
2055 /* Get the lov name */
2056 if (type == LOV_TYPE)
2057 rc = llapi_file_fget_lov_uuid(fd, &name);
2059 rc = llapi_file_fget_lmv_uuid(fd, &name);
2063 /* Now get the ost uuids */
2064 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2065 FILTER_BY_EXACT, "target_obd", ¶m);
2069 fp = fopen(param.gl_pathv[0], "r");
2072 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2077 snprintf(format, sizeof(format),
2078 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2079 while (fgets(buf, sizeof(buf), fp) != NULL) {
2080 if (uuidp && (index < *ost_count)) {
2081 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2089 if (uuidp && (index > *ost_count))
2094 cfs_free_param_data(¶m);
2098 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2100 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2103 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2108 root = open(mnt, O_RDONLY | O_DIRECTORY);
2111 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2116 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2124 /* Check if user specified value matches a real uuid. Ignore _UUID,
2125 * -osc-4ba41334, other trailing gunk in comparison.
2126 * @param real_uuid ends in "_UUID"
2127 * @param search_uuid may or may not end in "_UUID"
2129 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2131 int cmplen = strlen(real_uuid);
2132 int searchlen = strlen(search_uuid);
2134 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2136 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2139 /* The UUIDs may legitimately be different lengths, if
2140 * the system was upgraded from an older version. */
2141 if (cmplen != searchlen)
2144 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2147 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2148 * returned in param->fp_obd_index */
2149 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2151 struct obd_uuid obd_uuid;
2158 if (param->fp_got_uuids)
2161 /* Get the lov/lmv name */
2162 if (param->fp_get_lmv)
2163 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2165 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2167 if (rc != -ENOTTY) {
2168 llapi_error(LLAPI_MSG_ERROR, rc,
2169 "error: can't get %s name: %s",
2170 param->fp_get_lmv ? "lmv" : "lov",
2178 param->fp_got_uuids = 1;
2180 /* Now get the ost uuids */
2181 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2182 obd_uuid.uuid, FILTER_BY_EXACT,
2183 "target_obd", ¶m_data);
2187 fp = fopen(param_data.gl_pathv[0], "r");
2190 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2191 param_data.gl_pathv[0]);
2195 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2196 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2197 param->fp_get_lmv ? "MDTS" : "OBDS");
2199 snprintf(format, sizeof(format),
2200 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2201 while (fgets(buf, sizeof(buf), fp) != NULL) {
2204 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2207 if (param->fp_obd_uuid) {
2208 if (llapi_uuid_match(obd_uuid.uuid,
2209 param->fp_obd_uuid->uuid)) {
2210 param->fp_obd_index = index;
2213 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2214 /* Print everything */
2215 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2218 param->fp_obds_printed = 1;
2222 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2223 llapi_err_noerrno(LLAPI_MSG_ERROR,
2224 "error: %s: unknown obduuid: %s",
2225 __func__, param->fp_obd_uuid->uuid);
2229 cfs_free_param_data(¶m_data);
2233 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2234 * obd index for all these obduuids will be returned in
2235 * param->fp_obd_indexes */
2236 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2237 int num_obds, int **obdindexes, int *obdindex,
2240 int ret, obdcount, obd_valid = 0, obdnum;
2242 struct obd_uuid *uuids = NULL;
2246 if (type == LOV_TYPE)
2247 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2249 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2253 obdcount = atoi(buf);
2254 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2259 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2261 if (ret == -EOVERFLOW) {
2262 struct obd_uuid *uuids_temp;
2264 uuids_temp = realloc(uuids, obdcount *
2265 sizeof(struct obd_uuid));
2266 if (uuids_temp != NULL) {
2268 goto retry_get_uuids;
2273 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2277 indexes = malloc(num_obds * sizeof(*obdindex));
2278 if (indexes == NULL) {
2283 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2286 /* The user may have specified a simple index */
2287 i = strtol(obduuids[obdnum].uuid, &end, 0);
2288 if (end && *end == '\0' && i < obdcount) {
2289 indexes[obdnum] = i;
2292 for (i = 0; i < obdcount; i++) {
2293 if (llapi_uuid_match(uuids[i].uuid,
2294 obduuids[obdnum].uuid)) {
2295 indexes[obdnum] = i;
2301 if (i >= obdcount) {
2302 indexes[obdnum] = OBD_NOT_FOUND;
2303 llapi_err_noerrno(LLAPI_MSG_ERROR,
2304 "invalid obduuid '%s'",
2305 obduuids[obdnum].uuid);
2311 *obdindex = OBD_NOT_FOUND;
2313 *obdindex = obd_valid;
2315 *obdindexes = indexes;
2323 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2327 if (param->fp_mdt_uuid) {
2328 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2330 ¶m->fp_mdt_indexes,
2331 ¶m->fp_mdt_index, LMV_TYPE);
2336 if (param->fp_obd_uuid) {
2337 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2339 ¶m->fp_obd_indexes,
2340 ¶m->fp_obd_index, LOV_TYPE);
2345 param->fp_got_uuids = 1;
2350 int llapi_ostlist(char *path, struct find_param *param)
2355 fd = open(path, O_RDONLY | O_DIRECTORY);
2359 ret = setup_obd_uuid(fd, path, param);
2366 * Tries to determine the default stripe attributes for a given filesystem. The
2367 * filesystem to check should be specified by fsname, or will be determined
2370 static int sattr_get_defaults(const char *const fsname,
2371 unsigned int *scount,
2372 unsigned int *ssize,
2373 unsigned int *soffset)
2379 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2380 "stripecount", val, sizeof(val));
2383 *scount = atoi(val);
2387 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2388 "stripesize", val, sizeof(val));
2395 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2396 "stripeoffset", val, sizeof(val));
2399 *soffset = atoi(val);
2406 * Tries to gather the default stripe attributes for a given filesystem. If
2407 * the attributes can be determined, they are cached for easy retreival the
2408 * next time they are needed. Only a single filesystem's attributes are
2411 int sattr_cache_get_defaults(const char *const fsname,
2412 const char *const pathname, unsigned int *scount,
2413 unsigned int *ssize, unsigned int *soffset)
2416 char fsname[PATH_MAX + 1];
2417 unsigned int stripecount;
2418 unsigned int stripesize;
2419 unsigned int stripeoffset;
2425 char fsname_buf[PATH_MAX + 1];
2426 unsigned int tmp[3];
2428 if (fsname == NULL) {
2429 rc = llapi_search_fsname(pathname, fsname_buf);
2433 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2436 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2438 * Ensure all 3 sattrs (count, size, and offset) are
2439 * successfully retrieved and stored in tmp before writing to
2442 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2446 cache.stripecount = tmp[0];
2447 cache.stripesize = tmp[1];
2448 cache.stripeoffset = tmp[2];
2449 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2453 *scount = cache.stripecount;
2455 *ssize = cache.stripesize;
2457 *soffset = cache.stripeoffset;
2462 static char *layout2name(__u32 layout_pattern)
2464 if (layout_pattern == LOV_PATTERN_MDT)
2466 else if (layout_pattern == LOV_PATTERN_RAID0)
2468 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2474 enum lov_dump_flags {
2475 LDF_IS_DIR = 0x0001,
2476 LDF_IS_RAW = 0x0002,
2477 LDF_INDENT = 0x0004,
2478 LDF_SKIP_OBJS = 0x0008,
2482 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2483 struct lov_user_ost_data_v1 *objects,
2484 int verbose, int depth, char *pool_name,
2485 enum lov_dump_flags flags)
2487 bool is_dir = flags & LDF_IS_DIR;
2488 bool is_raw = flags & LDF_IS_RAW;
2489 bool indent = flags & LDF_INDENT;
2490 bool yaml = flags & LDF_YAML;
2491 bool skip_objs = flags & LDF_SKIP_OBJS;
2492 char *prefix = is_dir ? "" : "lmm_";
2493 char *separator = "";
2494 char *space = indent ? " " : "";
2497 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2498 lmm_oi_set_seq(&lum->lmm_oi, 0);
2499 if (!indent && (verbose & VERBOSE_DETAIL))
2500 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2503 if (!yaml && !indent && depth && path &&
2504 ((verbose != VERBOSE_OBJID) || !is_dir))
2505 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2507 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2508 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2509 space, prefix, lum->lmm_magic);
2510 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2512 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2513 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2515 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2517 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2522 if (verbose & ~VERBOSE_DFID)
2523 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2525 /* This needs a bit of hand-holding since old 1.x lmm_oi
2526 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2527 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2528 * a real FID. Ideally the 2.x code would have stored this
2529 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2530 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2531 * worked properly (especially since IGIF FIDs use mds_inum as
2532 * the FID SEQ), but unfortunately that didn't happen.
2534 * Print it to look like an IGIF FID, even though the fields
2535 * are reversed on disk, so that it makes sense to userspace.
2537 * Don't use ostid_id() and ostid_seq(), since they assume the
2538 * oi_fid fields are in the right order. This is why there are
2539 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2541 * For newer layout types hopefully this will be a real FID. */
2542 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2543 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2544 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2545 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2546 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2548 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2551 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2555 if (verbose & VERBOSE_COUNT) {
2556 if (verbose & ~VERBOSE_COUNT)
2557 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2560 if (!is_raw && lum->lmm_stripe_count == 0 &&
2561 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2562 unsigned int scount;
2563 rc = sattr_cache_get_defaults(NULL, path,
2567 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2570 llapi_error(LLAPI_MSG_ERROR, rc,
2571 "Cannot determine default"
2574 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2575 lum->lmm_stripe_count ==
2576 (typeof(lum->lmm_stripe_count))(-1)
2577 ? -1 : lum->lmm_stripe_count);
2580 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2581 (__s16)lum->lmm_stripe_count);
2583 if (!yaml && is_dir)
2589 if (verbose & VERBOSE_SIZE) {
2590 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2591 if (verbose & ~VERBOSE_SIZE)
2592 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2594 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2596 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2599 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2601 llapi_error(LLAPI_MSG_ERROR, rc,
2602 "Cannot determine default"
2605 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2606 lum->lmm_stripe_size);
2608 if (!yaml && is_dir)
2614 if ((verbose & VERBOSE_LAYOUT)) {
2615 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2616 if (verbose & ~VERBOSE_LAYOUT)
2617 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2619 if (lov_pattern_supported(lum->lmm_pattern))
2620 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2621 layout2name(lum->lmm_pattern));
2623 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2624 separator = (!yaml && is_dir) ? " " : "\n";
2627 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2628 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2629 if (verbose & ~VERBOSE_GENERATION)
2630 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2632 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2633 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2637 if (verbose & VERBOSE_OFFSET) {
2638 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2639 if (verbose & ~VERBOSE_OFFSET)
2640 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2642 if (is_dir || skip_objs)
2643 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2644 lum->lmm_stripe_offset ==
2645 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2646 lum->lmm_stripe_offset);
2647 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2648 llapi_printf(LLAPI_MSG_NORMAL, "0");
2650 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2651 objects[0].l_ost_idx);
2652 if (!yaml && is_dir)
2658 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2659 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2660 if (verbose & ~VERBOSE_POOL)
2661 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2663 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2664 if (!yaml && is_dir)
2670 if (strlen(separator) != 0)
2671 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2674 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2675 struct lov_user_ost_data_v1 *objects,
2676 char *path, int obdindex, int depth,
2677 int header, enum lov_dump_flags flags)
2679 bool is_dir = flags & LDF_IS_DIR;
2680 bool indent = flags & LDF_INDENT;
2681 bool skip_objs = flags & LDF_SKIP_OBJS;
2682 bool yaml = flags & LDF_YAML;
2683 bool obdstripe = obdindex == OBD_NOT_FOUND;
2686 if (!obdstripe && !skip_objs) {
2687 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2688 if (obdindex == objects[i].l_ost_idx) {
2698 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2701 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2702 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2703 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2704 char *space = " - ";
2707 llapi_printf(LLAPI_MSG_NORMAL,
2708 "%6slmm_objects:\n", " ");
2710 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2712 llapi_printf(LLAPI_MSG_NORMAL,
2713 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2715 for (i = 0; i < lum->lmm_stripe_count; i++) {
2716 int idx = objects[i].l_ost_idx;
2717 long long oid = ostid_id(&objects[i].l_ost_oi);
2718 long long gr = ostid_seq(&objects[i].l_ost_oi);
2720 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2724 struct lu_fid fid = { 0 };
2726 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2727 llapi_printf(LLAPI_MSG_NORMAL,
2728 "%sl_ost_idx: %d\n", space, idx);
2729 llapi_printf(LLAPI_MSG_NORMAL,
2730 "%8sl_fid: "DFID_NOBRACE"\n",
2732 } else if (indent) {
2733 struct lu_fid fid = { 0 };
2735 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2736 llapi_printf(LLAPI_MSG_NORMAL,
2737 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2738 space, i, idx, PFID(&fid));
2741 sprintf(fmt, "%s%s%s\n",
2742 "\t%6u\t%14llu\t%#13llx\t",
2743 (fid_seq_is_rsvd(gr) ||
2744 fid_seq_is_mdt0(gr)) ?
2745 "%14llu" : "%#14llx", "%s");
2746 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2748 obdindex == idx ? " *" : "");
2752 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2755 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2756 char *path, int obdindex, int depth, int verbose,
2757 enum lov_dump_flags flags)
2759 struct lmv_user_mds_data *objects = lum->lum_objects;
2760 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2761 char *separator = "";
2762 bool yaml = flags & LDF_YAML;
2763 bool obdstripe = false;
2766 if (obdindex != OBD_NOT_FOUND) {
2767 if (lum->lum_stripe_count == 0) {
2768 if (obdindex == lum->lum_stripe_offset)
2771 for (i = 0; i < lum->lum_stripe_count; i++) {
2772 if (obdindex == objects[i].lum_mds) {
2773 llapi_printf(LLAPI_MSG_NORMAL,
2788 /* show all information default */
2790 if (lum->lum_magic == LMV_USER_MAGIC)
2791 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2792 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2794 verbose = VERBOSE_OBJID;
2797 if (depth && path && ((verbose != VERBOSE_OBJID)))
2798 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2800 if (verbose & VERBOSE_COUNT) {
2801 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2802 if (verbose & ~VERBOSE_COUNT)
2803 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2804 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2805 (int)lum->lum_stripe_count);
2806 if ((verbose & VERBOSE_OFFSET) && !yaml)
2812 if (verbose & VERBOSE_OFFSET) {
2813 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2814 if (verbose & ~VERBOSE_OFFSET)
2815 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2816 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2817 (int)lum->lum_stripe_offset);
2818 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2824 if (verbose & VERBOSE_HASH_TYPE) {
2825 unsigned int type = lum->lum_hash_type;
2827 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2828 if (verbose & ~VERBOSE_HASH_TYPE)
2829 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2830 if (type < LMV_HASH_TYPE_MAX)
2831 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2832 mdt_hash_name[type]);
2834 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2839 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2840 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2841 if (lum->lum_stripe_count > 0)
2842 llapi_printf(LLAPI_MSG_NORMAL,
2843 "mdtidx\t\t FID[seq:oid:ver]\n");
2844 for (i = 0; i < lum->lum_stripe_count; i++) {
2845 int idx = objects[i].lum_mds;
2846 struct lu_fid *fid = &objects[i].lum_fid;
2847 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2848 llapi_printf(LLAPI_MSG_NORMAL,
2849 "%6u\t\t "DFID"\t\t%s\n",
2851 obdindex == idx ? " *" : "");
2856 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2857 pool_name[0] != '\0') {
2858 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2859 if (verbose & ~VERBOSE_POOL)
2860 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2862 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2866 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2867 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2870 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2871 enum lov_dump_flags flags)
2873 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2874 int depth = param->fp_max_depth;
2875 int verbose = param->fp_verbose;
2876 bool yaml = flags & LDF_YAML;
2878 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2879 !(flags & LDF_IS_DIR)) && !yaml)
2880 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2882 if (verbose & VERBOSE_DETAIL) {
2883 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2884 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2885 " ", comp_v1->lcm_magic);
2886 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2887 " ", comp_v1->lcm_size);
2888 if (flags & LDF_IS_DIR)
2889 llapi_printf(LLAPI_MSG_NORMAL,
2890 "%2slcm_flags: %s\n", " ",
2891 comp_v1->lcm_mirror_count > 0 ?
2894 llapi_printf(LLAPI_MSG_NORMAL,
2895 "%2slcm_flags: %s\n", " ",
2896 llapi_layout_flags_string(comp_v1->lcm_flags));
2899 if (verbose & VERBOSE_GENERATION) {
2900 if (verbose & ~VERBOSE_GENERATION)
2901 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2903 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2906 if (verbose & VERBOSE_MIRROR_COUNT) {
2907 if (verbose & ~VERBOSE_MIRROR_COUNT)
2908 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2910 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2911 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2912 comp_v1->lcm_mirror_count + 1 : 1);
2915 if (verbose & VERBOSE_COMP_COUNT) {
2916 if (verbose & ~VERBOSE_COMP_COUNT)
2917 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2919 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2920 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2921 comp_v1->lcm_entry_count : 0);
2924 if (verbose & VERBOSE_DETAIL && !yaml)
2925 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2928 static void lcme_flags2str(__u32 comp_flags)
2934 llapi_printf(LLAPI_MSG_NORMAL, "0");
2937 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2938 if (comp_flags & comp_flags_table[i].cfn_flag) {
2940 llapi_printf(LLAPI_MSG_NORMAL, ",");
2941 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2942 comp_flags_table[i].cfn_name);
2943 comp_flags &= ~comp_flags_table[i].cfn_flag;
2949 llapi_printf(LLAPI_MSG_NORMAL, ",");
2950 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2954 static void lov_dump_comp_v1_entry(struct find_param *param,
2955 enum lov_dump_flags flags, int index)
2957 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2958 struct lov_comp_md_entry_v1 *entry;
2959 char *separator = "";
2960 int verbose = param->fp_verbose;
2961 bool yaml = flags & LDF_YAML;
2963 entry = &comp_v1->lcm_entries[index];
2966 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2968 if (verbose & VERBOSE_COMP_ID) {
2969 if (verbose & VERBOSE_DETAIL && !yaml)
2970 llapi_printf(LLAPI_MSG_NORMAL,
2971 "%slcme_id: ", " - ");
2972 else if (verbose & ~VERBOSE_COMP_ID)
2973 llapi_printf(LLAPI_MSG_NORMAL,
2974 "%4slcme_id: ", " ");
2975 if (entry->lcme_id != LCME_ID_INVAL)
2976 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2978 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2982 if (verbose & VERBOSE_MIRROR_ID) {
2983 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2984 if (verbose & ~VERBOSE_MIRROR_ID)
2985 llapi_printf(LLAPI_MSG_NORMAL,
2986 "%4slcme_mirror_id: ", " ");
2987 if (entry->lcme_id != LCME_ID_INVAL)
2988 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2989 mirror_id_of(entry->lcme_id));
2991 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2995 if (verbose & VERBOSE_COMP_FLAGS) {
2996 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2997 if (verbose & ~VERBOSE_COMP_FLAGS)
2998 llapi_printf(LLAPI_MSG_NORMAL,
2999 "%4slcme_flags: ", " ");
3000 lcme_flags2str(entry->lcme_flags);
3004 if (verbose & VERBOSE_COMP_START) {
3005 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3006 if (verbose & ~VERBOSE_COMP_START)
3007 llapi_printf(LLAPI_MSG_NORMAL,
3008 "%4slcme_extent.e_start: ", " ");
3009 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3010 entry->lcme_extent.e_start);
3014 if (verbose & VERBOSE_COMP_END) {
3015 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3016 if (verbose & ~VERBOSE_COMP_END)
3017 llapi_printf(LLAPI_MSG_NORMAL,
3018 "%4slcme_extent.e_end: ", " ");
3019 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3020 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3022 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3023 entry->lcme_extent.e_end);
3028 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3029 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3030 } else if (verbose & VERBOSE_DETAIL) {
3031 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3032 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3033 " ", entry->lcme_offset);
3034 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3035 " ", entry->lcme_size);
3036 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3038 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3042 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3043 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3045 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3046 * The table below gives the answers for the specified parameters (value and
3047 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3048 * --------------------------------------
3049 * 1 | file > limit; sign > 0 | -1 / -1 |
3050 * 2 | file = limit; sign > 0 | -1 / -1 |
3051 * 3 | file < limit; sign > 0 | ? / 1 |
3052 * 4 | file > limit; sign = 0 | -1 / -1 |
3053 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3054 * 6 | file < limit; sign = 0 | ? / -1 |
3055 * 7 | file > limit; sign < 0 | 1 / 1 |
3056 * 8 | file = limit; sign < 0 | ? / -1 |
3057 * 9 | file < limit; sign < 0 | ? / -1 |
3058 * --------------------------------------
3059 * Note: 5th actually means that the value is within the interval
3060 * (limit - margin, limit]. */
3061 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3062 int sign, int negopt, unsigned long long margin,
3068 /* Drop the fraction of margin (of days). */
3069 if (file + margin <= limit)
3071 } else if (sign == 0) {
3072 if (file <= limit && file + margin > limit)
3074 else if (file + margin <= limit)
3076 } else if (sign < 0) {
3083 return negopt ? ~ret + 1 : ret;
3086 static inline struct lov_user_md *
3087 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3089 return (struct lov_user_md *)((char *)comp_v1 +
3090 comp_v1->lcm_entries[ent_idx].lcme_offset);
3093 static inline struct lov_user_ost_data_v1 *
3094 lov_v1v3_objects(struct lov_user_md *v1)
3096 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3097 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3099 return v1->lmm_objects;
3103 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3105 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3106 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3107 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3109 pool_name[0] = '\0';
3113 print_last_init_comp(struct find_param *param)
3115 /* print all component info */
3116 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3119 /* print specific component info */
3120 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3121 param->fp_check_comp_start || param->fp_check_comp_end ||
3122 param->fp_check_mirror_id || param->fp_check_mirror_index)
3128 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3132 if (param->fp_comp_end == LUSTRE_EOF) {
3133 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3134 match = end == LUSTRE_EOF ? 1 : -1;
3135 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3136 match = end == LUSTRE_EOF ? -1 : 1;
3137 else /* at least EOF */
3139 if (param->fp_exclude_comp_end)
3142 unsigned long long margin;
3144 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3145 match = find_value_cmp(end, param->fp_comp_end,
3146 param->fp_comp_end_sign,
3147 param->fp_exclude_comp_end, margin, 0);
3154 * An example of "getstripe -v" for a two components PFL file:
3157 * lcm_magic: 0x0BD60BD0
3161 * lcm_entry_count: 2
3165 * lcme_extent.e_start: 0
3166 * lcme_extent.e_end: 1048576
3170 * lmm_magic: 0x0BD10BD0
3171 * lmm_seq: 0x200000401
3172 * lmm_object_id: 0x1
3173 * lmm_fid: [0x200000401:0x1:0x0]
3174 * lmm_stripe_count: 1
3175 * lmm_stripe_size: 1048576
3176 * lmm_pattern: raid0
3178 * lmm_stripe_offset: 0
3180 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3184 * lcme_extent.e_start: 1048576
3185 * lcme_extent.e_end: EOF
3189 * lmm_magic: 0x0BD10BD0
3190 * lmm_seq: 0x200000401
3191 * lmm_object_id: 0x1
3192 * lmm_fid: [0x200000401:0x1:0x0]
3193 * lmm_stripe_count: 2
3194 * lmm_stripe_size: 1048576
3195 * lmm_pattern: raid0
3197 * lmm_stripe_offset: 1
3199 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3200 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3202 static void lov_dump_comp_v1(struct find_param *param, char *path,
3203 enum lov_dump_flags flags)
3205 struct lov_comp_md_entry_v1 *entry;
3206 struct lov_user_ost_data_v1 *objects;
3207 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3208 struct lov_user_md_v1 *v1;
3209 char pool_name[LOV_MAXPOOLNAME + 1];
3210 int obdindex = param->fp_obd_index;
3212 bool obdstripe = false;
3213 __u16 mirror_index = 0;
3214 __u16 mirror_id = 0;
3216 if (obdindex != OBD_NOT_FOUND) {
3217 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3218 i < comp_v1->lcm_entry_count; i++) {
3219 if (!(comp_v1->lcm_entries[i].lcme_flags &
3223 v1 = lov_comp_entry(comp_v1, i);
3224 objects = lov_v1v3_objects(v1);
3226 for (j = 0; j < v1->lmm_stripe_count; j++) {
3227 if (obdindex == objects[j].l_ost_idx) {
3240 lov_dump_comp_v1_header(param, path, flags);
3242 flags |= LDF_INDENT;
3244 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3245 entry = &comp_v1->lcm_entries[i];
3247 if (param->fp_check_comp_flags) {
3248 if (((param->fp_comp_flags & entry->lcme_flags) !=
3249 param->fp_comp_flags) ||
3250 (param->fp_comp_neg_flags & entry->lcme_flags))
3254 if (param->fp_check_comp_id &&
3255 param->fp_comp_id != entry->lcme_id)
3258 if (param->fp_check_comp_start) {
3259 match = find_value_cmp(entry->lcme_extent.e_start,
3260 param->fp_comp_start,
3261 param->fp_comp_start_sign,
3263 param->fp_comp_start_units, 0);
3268 if (param->fp_check_comp_end) {
3269 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3275 if (param->fp_check_mirror_index) {
3276 if (mirror_id != mirror_id_of(entry->lcme_id)) {
3278 mirror_id = mirror_id_of(entry->lcme_id);
3281 match = find_value_cmp(mirror_index,
3282 param->fp_mirror_index,
3283 param->fp_mirror_index_sign,
3284 param->fp_exclude_mirror_index,
3288 } else if (param->fp_check_mirror_id) {
3289 if (mirror_id != mirror_id_of(entry->lcme_id))
3290 mirror_id = mirror_id_of(entry->lcme_id);
3292 match = find_value_cmp(mirror_id,
3293 param->fp_mirror_id,
3294 param->fp_mirror_id_sign,
3295 param->fp_exclude_mirror_id,
3301 if (print_last_init_comp(param)) {
3303 * if part of stripe info is needed, we'd print only
3304 * the last instantiated component info.
3306 if (entry->lcme_flags & LCME_FL_INIT)
3312 if (entry->lcme_flags & LCME_FL_INIT) {
3313 if (obdindex != OBD_NOT_FOUND) {
3314 flags |= LDF_SKIP_OBJS;
3315 v1 = lov_comp_entry(comp_v1, i);
3316 objects = lov_v1v3_objects(v1);
3318 for (j = 0; j < v1->lmm_stripe_count; j++) {
3319 if (obdindex == objects[j].l_ost_idx) {
3320 flags &= ~LDF_SKIP_OBJS;
3325 flags &= ~LDF_SKIP_OBJS;
3328 flags |= LDF_SKIP_OBJS;
3331 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3333 lov_dump_comp_v1_entry(param, flags, i);
3335 v1 = lov_comp_entry(comp_v1, i);
3336 objects = lov_v1v3_objects(v1);
3337 lov_v1v3_pool_name(v1, pool_name);
3339 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3340 param->fp_max_depth, param->fp_verbose,
3343 if (print_last_init_comp(param)) {
3345 * directory layout contains only layout template, print the
3349 i = comp_v1->lcm_entry_count - 1;
3352 flags &= ~LDF_SKIP_OBJS;
3354 lov_dump_comp_v1_entry(param, flags, i);
3356 v1 = lov_comp_entry(comp_v1, i);
3357 objects = lov_v1v3_objects(v1);
3358 lov_v1v3_pool_name(v1, pool_name);
3360 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3361 param->fp_max_depth, param->fp_verbose,
3366 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3367 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3370 static inline bool has_any_comp_options(struct find_param *param)
3372 int verbose = param->fp_verbose;
3374 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3375 param->fp_check_comp_start || param->fp_check_comp_end ||
3376 param->fp_check_comp_flags)
3379 /* show full layout information, not component specific */
3380 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3383 return verbose & VERBOSE_COMP_OPTS;
3386 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3389 struct lov_user_md *lum = &orig->lmd_lmm;
3390 struct lov_user_mds_data *new;
3391 struct lov_comp_md_v1 *comp_v1;
3392 struct lov_comp_md_entry_v1 *ent;
3393 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3394 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3397 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3399 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3403 memcpy(new, orig, sizeof(lstat_t));
3405 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3406 comp_v1->lcm_magic = lum->lmm_magic;
3407 comp_v1->lcm_size = lum_off + lum_size;
3408 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3409 comp_v1->lcm_flags = 0;
3410 comp_v1->lcm_entry_count = 1;
3412 ent = &comp_v1->lcm_entries[0];
3414 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3415 ent->lcme_extent.e_start = 0;
3416 ent->lcme_extent.e_end = LUSTRE_EOF;
3417 ent->lcme_offset = lum_off;
3418 ent->lcme_size = lum_size;
3420 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3425 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3426 enum lov_dump_flags flags)
3428 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3430 if (has_any_comp_options(param)) {
3431 struct lov_user_mds_data *new_lmd, *orig_lmd;
3433 orig_lmd = param->fp_lmd;
3434 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3435 if (new_lmd != NULL) {
3436 param->fp_lmd = new_lmd;
3437 lov_dump_comp_v1(param, path, flags);
3438 param->fp_lmd = orig_lmd;
3444 if (magic == LOV_USER_MAGIC_V1) {
3445 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3446 param->fp_lmd->lmd_lmm.lmm_objects,
3447 path, param->fp_obd_index,
3448 param->fp_max_depth, param->fp_verbose,
3451 char pool_name[LOV_MAXPOOLNAME + 1];
3452 struct lov_user_ost_data_v1 *objects;
3453 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3455 snprintf(pool_name, sizeof(pool_name), "%s",
3456 lmmv3->lmm_pool_name);
3457 objects = lmmv3->lmm_objects;
3458 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3459 objects, path, param->fp_obd_index,
3460 param->fp_max_depth, param->fp_verbose,
3465 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3466 enum lov_dump_flags flags)
3470 if (param->fp_get_lmv || param->fp_get_default_lmv)
3471 magic = (__u32)param->fp_lmv_md->lum_magic;
3473 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3476 flags |= LDF_IS_RAW;
3481 case LOV_USER_MAGIC_V1:
3482 case LOV_USER_MAGIC_V3:
3483 case LOV_USER_MAGIC_SPECIFIC:
3484 lov_dump_plain_user_lmm(param, path, flags);
3487 case LMV_USER_MAGIC: {
3488 char pool_name[LOV_MAXPOOLNAME + 1];
3489 struct lmv_user_md *lum;
3491 lum = (struct lmv_user_md *)param->fp_lmv_md;
3492 snprintf(pool_name, sizeof(pool_name), "%s",
3493 lum->lum_pool_name);
3494 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3495 param->fp_max_depth, param->fp_verbose,
3499 case LOV_USER_MAGIC_COMP_V1:
3500 lov_dump_comp_v1(param, path, flags);
3503 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3504 "(expecting one of %#x %#x %#x %#x)\n",
3505 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3506 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3507 LMV_USER_MAGIC, LMV_MAGIC_V1);
3512 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3518 fname = strrchr(path, '/');
3520 /* It should be a file (or other non-directory) */
3521 if (fname == NULL) {
3522 dname = (char *)malloc(2);
3526 fname = (char *)path;
3528 dname = (char *)malloc(fname - path + 1);
3531 strncpy(dname, path, fname - path);
3532 dname[fname - path] = '\0';
3536 fd = open(dname, O_RDONLY | O_NONBLOCK);
3543 strcpy((char *)lum, fname);
3544 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3547 if (close(fd) == -1 && rc == 0)
3554 int llapi_file_lookup(int dirfd, const char *name)
3556 struct obd_ioctl_data data = { 0 };
3561 if (dirfd < 0 || name == NULL)
3564 data.ioc_version = OBD_IOCTL_VERSION;
3565 data.ioc_len = sizeof(data);
3566 data.ioc_inlbuf1 = (char *)name;
3567 data.ioc_inllen1 = strlen(name) + 1;
3569 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3571 llapi_error(LLAPI_MSG_ERROR, rc,
3572 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3577 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3583 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3584 * Return -1 or 1 if file timestamp does not or does match the given criteria
3585 * correspondingly. Return 0 if the MDS time is being checked and there are
3586 * attributes on OSTs and it is not yet clear if the timespamp matches.
3588 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3589 * updated timestamps. */
3590 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3595 /* Check if file is accepted. */
3596 if (param->fp_atime) {
3597 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3598 param->fp_asign, param->fp_exclude_atime,
3605 if (param->fp_mtime) {
3606 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3607 param->fp_msign, param->fp_exclude_mtime,
3612 /* If the previous check matches, but this one is not yet clear,
3613 * we should return 0 to do an RPC on OSTs. */
3618 if (param->fp_ctime) {
3619 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3620 param->fp_csign, param->fp_exclude_ctime,
3625 /* If the previous check matches, but this one is not yet clear,
3626 * we should return 0 to do an RPC on OSTs. */
3635 * Check whether the stripes matches the indexes user provided
3639 static int check_obd_match(struct find_param *param)
3641 struct lov_user_ost_data_v1 *objects;
3642 struct lov_comp_md_v1 *comp_v1 = NULL;
3643 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3644 lstat_t *st = ¶m->fp_lmd->lmd_st;
3645 int i, j, k, count = 1;
3647 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3650 if (!S_ISREG(st->st_mode))
3653 /* Only those files should be accepted, which have a
3654 * stripe on the specified OST. */
3655 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3656 comp_v1 = (struct lov_comp_md_v1 *)v1;
3657 count = comp_v1->lcm_entry_count;
3660 for (i = 0; i < count; i++) {
3662 v1 = lov_comp_entry(comp_v1, i);
3664 objects = lov_v1v3_objects(v1);
3666 for (j = 0; j < v1->lmm_stripe_count; j++) {
3667 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3670 for (k = 0; k < param->fp_num_obds; k++) {
3671 if (param->fp_obd_indexes[k] ==
3672 objects[j].l_ost_idx)
3673 return !param->fp_exclude_obd;
3678 return param->fp_exclude_obd;
3681 static int check_mdt_match(struct find_param *param)
3685 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3688 /* FIXME: For striped dir, we should get stripe information and check */
3689 for (i = 0; i < param->fp_num_mdts; i++) {
3690 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3691 return !param->fp_exclude_mdt;
3694 if (param->fp_exclude_mdt)
3701 * Check whether the obd is active or not, if it is
3702 * not active, just print the object affected by this
3705 static int print_failed_tgt(struct find_param *param, char *path, int type)
3707 struct obd_statfs stat_buf;
3708 struct obd_uuid uuid_buf;
3711 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3714 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3715 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3716 ret = llapi_obd_statfs(path, type,
3717 param->fp_obd_index, &stat_buf,
3720 llapi_printf(LLAPI_MSG_NORMAL,
3721 "obd_uuid: %s failed %s ",
3722 param->fp_obd_uuid->uuid,
3729 static int find_check_stripe_size(struct find_param *param)
3731 struct lov_comp_md_v1 *comp_v1 = NULL;
3732 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3733 int ret, i, count = 1;
3735 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3736 comp_v1 = (struct lov_comp_md_v1 *)v1;
3737 count = comp_v1->lcm_entry_count;
3738 ret = param->fp_exclude_stripe_size ? 1 : -1;
3741 for (i = 0; i < count; i++) {
3743 v1 = lov_comp_entry(comp_v1, i);
3745 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3746 param->fp_stripe_size_sign,
3747 param->fp_exclude_stripe_size,
3748 param->fp_stripe_size_units, 0);
3749 /* If any stripe_size matches */
3757 static __u32 find_get_stripe_count(struct find_param *param)
3759 struct lov_comp_md_v1 *comp_v1 = NULL;
3760 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3762 __u32 stripe_count = 0;
3764 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3765 comp_v1 = (struct lov_comp_md_v1 *)v1;
3766 count = comp_v1->lcm_entry_count;
3769 for (i = 0; i < count; i++) {
3771 v1 = lov_comp_entry(comp_v1, i);
3772 stripe_count += v1->lmm_stripe_count;
3775 return stripe_count;
3778 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3780 static int find_check_layout(struct find_param *param)
3782 struct lov_comp_md_v1 *comp_v1 = NULL;
3783 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3785 bool found = false, valid = false;
3787 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3788 comp_v1 = (struct lov_comp_md_v1 *)v1;
3789 count = comp_v1->lcm_entry_count;
3792 for (i = 0; i < count; i++) {
3794 v1 = lov_comp_entry(comp_v1, i);
3796 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3800 if (v1->lmm_pattern & param->fp_layout) {
3809 if ((found && !param->fp_exclude_layout) ||
3810 (!found && param->fp_exclude_layout))
3816 static int find_check_pool(struct find_param *param)
3818 struct lov_comp_md_v1 *comp_v1 = NULL;
3819 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3820 struct lov_user_md_v3 *v3 = (void *)v1;
3824 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3825 comp_v1 = (struct lov_comp_md_v1 *)v1;
3826 count = comp_v1->lcm_entry_count;
3827 /* empty requested pool is taken as no pool search */
3828 if (count == 0 && param->fp_poolname[0] == '\0')
3832 for (i = 0; i < count; i++) {
3833 if (comp_v1 != NULL)
3834 v1 = lov_comp_entry(comp_v1, i);
3836 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3837 (param->fp_poolname[0] == '\0')) ||
3838 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3839 (strncmp(v3->lmm_pool_name,
3840 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3841 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3842 (strcmp(param->fp_poolname, "*") == 0))) {
3848 if ((found && !param->fp_exclude_pool) ||
3849 (!found && param->fp_exclude_pool))
3855 static int find_check_comp_options(struct find_param *param)
3857 lstat_t *st = ¶m->fp_lmd->lmd_st;
3858 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3859 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3860 struct lov_comp_md_entry_v1 *entry;
3863 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3864 comp_v1 = (struct lov_comp_md_v1 *)v1;
3866 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3867 if (forged_v1 == NULL)
3869 comp_v1 = forged_v1;
3870 comp_v1->lcm_entry_count = 1;
3871 entry = &comp_v1->lcm_entries[0];
3872 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3873 entry->lcme_extent.e_start = 0;
3874 entry->lcme_extent.e_end = LUSTRE_EOF;
3877 /* invalid case, don't match for any kind of search. */
3878 if (comp_v1->lcm_entry_count == 0) {
3883 if (param->fp_check_comp_count) {
3884 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3885 param->fp_comp_count,
3886 param->fp_comp_count_sign,
3887 param->fp_exclude_comp_count, 1, 0);
3893 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3894 entry = &comp_v1->lcm_entries[i];
3896 if (param->fp_check_comp_flags) {
3898 if (((param->fp_comp_flags & entry->lcme_flags) !=
3899 param->fp_comp_flags) ||
3900 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3906 if (param->fp_check_comp_start) {
3907 ret = find_value_cmp(entry->lcme_extent.e_start,
3908 param->fp_comp_start,
3909 param->fp_comp_start_sign,
3910 param->fp_exclude_comp_start,
3911 param->fp_comp_start_units, 0);
3916 if (param->fp_check_comp_end) {
3917 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3923 /* the component matches all criteria */
3927 if (forged_v1 != NULL)
3932 static int find_check_mirror_options(struct find_param *param)
3934 struct lov_comp_md_v1 *comp_v1;
3935 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3938 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3941 comp_v1 = (struct lov_comp_md_v1 *)v1;
3943 if (param->fp_check_mirror_count) {
3944 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3945 param->fp_mirror_count,
3946 param->fp_mirror_count_sign,
3947 param->fp_exclude_mirror_count, 1, 0);
3952 if (param->fp_check_mirror_state) {
3954 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
3956 if ((param->fp_mirror_state != 0 &&
3957 file_state != param->fp_mirror_state) ||
3958 file_state == param->fp_mirror_neg_state)
3965 static bool find_check_lmm_info(struct find_param *param)
3967 return param->fp_check_pool || param->fp_check_stripe_count ||
3968 param->fp_check_stripe_size || param->fp_check_layout ||
3969 param->fp_check_comp_count || param->fp_check_comp_end ||
3970 param->fp_check_comp_start || param->fp_check_comp_flags ||
3971 param->fp_check_mirror_count ||
3972 param->fp_check_mirror_state ||
3973 param->fp_check_projid;
3977 * Get file/directory project id.
3978 * by the open fd resides on.
3979 * Return 0 and project id on success, or -ve errno.
3981 static int fget_projid(int fd, int *projid)
3986 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3990 *projid = fsx.fsx_projid;
3994 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3995 void *data, struct dirent64 *de)
3997 struct find_param *param = (struct find_param *)data;
3998 DIR *dir = dirp == NULL ? NULL : *dirp;
3999 int decision = 1; /* 1 is accepted; -1 is rejected. */
4000 lstat_t *st = ¶m->fp_lmd->lmd_st;
4002 int checked_type = 0;
4004 __u32 stripe_count = 0;
4007 if (parent == NULL && dir == NULL)
4010 /* If a regular expression is presented, make the initial decision */
4011 if (param->fp_pattern != NULL) {
4012 char *fname = strrchr(path, '/');
4013 fname = (fname == NULL ? path : fname + 1);
4014 ret = fnmatch(param->fp_pattern, fname, 0);
4015 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
4016 (ret == 0 && param->fp_exclude_pattern))
4020 /* See if we can check the file type from the dirent. */
4021 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
4024 if (DTTOIF(de->d_type) == param->fp_type) {
4025 if (param->fp_exclude_type)
4028 if (!param->fp_exclude_type)
4035 /* Request MDS for the stat info if some of these parameters need
4036 * to be compared. */
4037 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4038 param->fp_check_uid || param->fp_check_gid ||
4039 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4040 param->fp_check_size || param->fp_check_blocks ||
4041 find_check_lmm_info(param) ||
4042 param->fp_check_mdt_count || param->fp_check_hash_type)
4045 if (param->fp_type != 0 && checked_type == 0)
4048 if (decision == 0) {
4049 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4050 param->fp_get_lmv = 1;
4051 ret = cb_get_dirstripe(path, dir, param);
4056 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4057 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4058 param->fp_lum_size, GET_LMD_INFO);
4059 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4060 find_check_lmm_info(param)) {
4061 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4063 /* We need to "fake" the "use the default" values
4064 * since the lmm struct is zeroed out at this point. */
4065 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4066 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4068 ostid_set_seq(&lmm->lmm_oi,
4069 FID_SEQ_LOV_DEFAULT);
4070 lmm->lmm_stripe_size = 0;
4071 lmm->lmm_stripe_count = 0;
4072 lmm->lmm_stripe_offset = -1;
4074 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4076 ret = llapi_file_fget_mdtidx(dirfd(dir),
4077 ¶m->fp_file_mdt_index);
4078 } else if (S_ISREG(st->st_mode)) {
4079 /* FIXME: we could get the MDT index from the
4080 * file's FID in lmd->lmd_lmm.lmm_oi without
4081 * opening the file, once we are sure that
4082 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4083 * That would still be an ioctl() to map the
4084 * FID to the MDT, but not an open RPC. */
4085 fd = open(path, O_RDONLY);
4087 ret = llapi_file_fget_mdtidx(fd,
4088 ¶m->fp_file_mdt_index);
4093 /* For a special file, we assume it resides on
4094 * the same MDT as the parent directory. */
4095 ret = llapi_file_fget_mdtidx(dirfd(parent),
4096 ¶m->fp_file_mdt_index);
4107 stripe_count = find_get_stripe_count(param);
4111 if (param->fp_type && !checked_type) {
4112 if ((st->st_mode & S_IFMT) == param->fp_type) {
4113 if (param->fp_exclude_type)
4116 if (!param->fp_exclude_type)
4122 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4123 if (lustre_fs && param->fp_got_uuids &&
4124 param->fp_dev != st->st_dev) {
4125 /* A lustre/lustre mount point is crossed. */
4126 param->fp_got_uuids = 0;
4127 param->fp_obds_printed = 0;
4128 param->fp_mdt_index = OBD_NOT_FOUND;
4129 param->fp_obd_index = OBD_NOT_FOUND;
4132 if (lustre_fs && !param->fp_got_uuids) {
4133 ret = setup_target_indexes(dir ? dir : parent, path,
4138 param->fp_dev = st->st_dev;
4139 } else if (!lustre_fs && param->fp_got_uuids) {
4140 /* A lustre/non-lustre mount point is crossed. */
4141 param->fp_got_uuids = 0;
4142 param->fp_mdt_index = OBD_NOT_FOUND;
4143 param->fp_obd_index = OBD_NOT_FOUND;
4147 if (param->fp_check_stripe_size) {
4148 decision = find_check_stripe_size(param);
4153 if (param->fp_check_stripe_count) {
4154 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4155 param->fp_stripe_count_sign,
4156 param->fp_exclude_stripe_count, 1, 0);
4161 if (param->fp_check_mdt_count) {
4162 decision = find_value_cmp(
4163 param->fp_lmv_md->lum_stripe_count,
4164 param->fp_mdt_count,
4165 param->fp_mdt_count_sign,
4166 param->fp_exclude_mdt_count, 1, 0);
4171 if (param->fp_check_layout) {
4172 decision = find_check_layout(param);
4177 if (param->fp_check_hash_type) {
4180 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4181 if ((found && param->fp_exclude_hash_type) ||
4182 (!found && !param->fp_exclude_hash_type)) {
4188 /* If an OBD UUID is specified but none matches, skip this file. */
4189 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4190 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4193 /* If an OST or MDT UUID is given, and some OST matches,
4195 if (param->fp_obd_index != OBD_NOT_FOUND ||
4196 param->fp_mdt_index != OBD_NOT_FOUND) {
4197 if (param->fp_obd_uuid) {
4198 if (check_obd_match(param)) {
4199 /* If no mdtuuid is given, we are done.
4200 * Otherwise, fall through to the mdtuuid
4202 if (!param->fp_mdt_uuid)
4209 if (param->fp_mdt_uuid) {
4210 if (check_mdt_match(param))
4217 if (param->fp_check_uid) {
4218 if (st->st_uid == param->fp_uid) {
4219 if (param->fp_exclude_uid)
4222 if (!param->fp_exclude_uid)
4227 if (param->fp_check_gid) {
4228 if (st->st_gid == param->fp_gid) {
4229 if (param->fp_exclude_gid)
4232 if (!param->fp_exclude_gid)
4237 if (param->fp_check_projid) {
4241 fd = open(path, O_RDONLY);
4244 ret = fget_projid(fd, &projid);
4249 if (projid == param->fp_projid) {
4250 if (param->fp_exclude_uid)
4253 if (!param->fp_exclude_projid)
4258 if (param->fp_check_pool) {
4259 decision = find_check_pool(param);
4264 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4265 param->fp_check_comp_start || param->fp_check_comp_end) {
4266 decision = find_check_comp_options(param);
4271 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4272 decision = find_check_mirror_options(param);
4277 /* Check the time on mds. */
4279 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4282 for_mds = lustre_fs ?
4283 (S_ISREG(st->st_mode) && stripe_count) : 0;
4284 decision = find_time_check(st, param, for_mds);
4289 /* If file still fits the request, ask ost for updated info.
4290 The regular stat is almost of the same speed as some new
4291 'glimpse-size-ioctl'. */
4293 if ((param->fp_check_size || param->fp_check_blocks) &&
4294 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4298 /* For regular files with the stripe the decision may have not
4299 * been taken yet if *time or size is to be checked. */
4300 if (param->fp_obd_index != OBD_NOT_FOUND)
4301 print_failed_tgt(param, path, LL_STATFS_LOV);
4303 if (param->fp_mdt_index != OBD_NOT_FOUND)
4304 print_failed_tgt(param, path, LL_STATFS_LMV);
4307 ret = fstat_f(dirfd(dir), st);
4308 else if (de != NULL)
4309 ret = fstatat_f(dirfd(parent), de->d_name, st,
4310 AT_SYMLINK_NOFOLLOW);
4312 ret = lstat_f(path, st);
4315 if (errno == ENOENT) {
4316 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4317 "warning: %s: %s does not exist",
4322 llapi_error(LLAPI_MSG_ERROR, ret,
4323 "%s: IOC_LOV_GETINFO on %s failed",
4329 /* Check the time on osc. */
4330 decision = find_time_check(st, param, 0);
4335 if (param->fp_check_size) {
4336 decision = find_value_cmp(st->st_size, param->fp_size,
4337 param->fp_size_sign,
4338 param->fp_exclude_size,
4339 param->fp_size_units, 0);
4344 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4345 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4346 param->fp_blocks_sign,
4347 param->fp_exclude_blocks,
4348 param->fp_blocks_units, 0);
4353 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4354 if (param->fp_zero_end)
4355 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4357 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4361 /* Do not get down anymore? */
4362 if (param->fp_depth == param->fp_max_depth) {
4373 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4374 void *param_data, struct dirent64 *de)
4376 struct find_param *param = (struct find_param *)param_data;
4377 struct lmv_user_md *lmu = param->fp_lmv_md;
4378 DIR *tmp_parent = parent;
4379 char raw[MAX_IOC_BUFLEN] = {'\0'};
4381 struct obd_ioctl_data data = { 0 };
4388 if (parent == NULL && dirp == NULL)
4397 if (parent == NULL) {
4398 tmp_parent = opendir_parent(path);
4399 if (tmp_parent == NULL) {
4402 llapi_error(LLAPI_MSG_ERROR, ret,
4403 "can not open %s", path);
4408 fd = dirfd(tmp_parent);
4410 path_copy = strdup(path);
4411 filename = basename(path_copy);
4413 data.ioc_inlbuf1 = (char *)filename;
4414 data.ioc_inllen1 = strlen(filename) + 1;
4415 data.ioc_inlbuf2 = (char *)lmu;
4416 data.ioc_inllen2 = lmv_user_md_size(lmu->lum_stripe_count,
4418 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4420 llapi_error(LLAPI_MSG_ERROR, ret,
4421 "llapi_obd_statfs: error packing ioctl data");
4426 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4428 if (errno == EBUSY && !retry) {
4429 /* because migrate may not be able to lock all involved
4430 * objects in order, for some of them it try lock, while
4431 * there may be conflicting COS locks and cause migrate
4432 * fail with EBUSY, hope a sync() could cause
4433 * transaction commit and release these COS locks. */
4439 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4440 path, strerror(-ret), ret);
4442 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4443 fprintf(stdout, "migrate %s to MDT%d stripe count %d\n",
4444 path, lmu->lum_stripe_offset, lmu->lum_stripe_count);
4449 /* If the directory is being migration, we need
4450 * close the directory after migration,
4451 * so the old directory cache will be cleanup
4452 * on the client side, and re-open to get the
4453 * new directory handle */
4454 *dirp = opendir(path);
4455 if (*dirp == NULL) {
4457 llapi_error(LLAPI_MSG_ERROR, ret,
4458 "%s: Failed to open '%s'", __func__, path);
4463 closedir(tmp_parent);
4470 int llapi_migrate_mdt(char *path, struct find_param *param)
4472 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
4475 int llapi_mv(char *path, struct find_param *param)
4477 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4478 static bool printed;
4481 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4482 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4486 return llapi_migrate_mdt(path, param);
4489 int llapi_find(char *path, struct find_param *param)
4491 return param_callback(path, cb_find_init, cb_common_fini, param);
4495 * Get MDT number that the file/directory inode referenced
4496 * by the open fd resides on.
4497 * Return 0 and mdtidx on success, or -ve errno.
4499 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4501 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4506 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4507 struct dirent64 *de)
4509 struct find_param *param = (struct find_param *)data;
4510 DIR *d = dirp == NULL ? NULL : *dirp;
4514 if (parent == NULL && d == NULL)
4518 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4519 } else /* if (parent) */ {
4522 fd = open(path, O_RDONLY | O_NOCTTY);
4524 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4532 if (ret == -ENODATA) {
4533 if (!param->fp_obd_uuid)
4534 llapi_printf(LLAPI_MSG_NORMAL,
4535 "'%s' has no stripe info\n", path);
4537 } else if (ret == -ENOENT) {
4538 llapi_error(LLAPI_MSG_WARN, ret,
4539 "warning: %s: '%s' does not exist",
4542 } else if (ret == -ENOTTY) {
4543 llapi_error(LLAPI_MSG_ERROR, ret,
4544 "%s: '%s' not on a Lustre fs",
4547 llapi_error(LLAPI_MSG_ERROR, ret,
4548 "error: %s: '%s' failed get_mdtidx",
4554 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4555 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4557 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4561 /* Do not go down anymore? */
4562 if (param->fp_depth == param->fp_max_depth)
4570 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4571 struct dirent64 *de)
4573 struct find_param *param = (struct find_param *)data;
4574 DIR *d = dirp == NULL ? NULL : *dirp;
4577 if (parent == NULL && d == NULL)
4580 if (param->fp_obd_uuid) {
4581 param->fp_quiet = 1;
4582 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4587 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4588 ret = cb_get_dirstripe(path, d, param);
4590 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4591 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4592 param->fp_lum_size, GET_LMD_STRIPE);
4597 if (errno == ENODATA && d != NULL) {
4598 /* We need to "fake" the "use the default" values
4599 * since the lmm struct is zeroed out at this point.
4600 * The magic needs to be set in order to satisfy
4601 * a check later on in the code path.
4602 * The object_seq needs to be set for the "(Default)"
4603 * prefix to be displayed. */
4604 if (param->fp_get_default_lmv) {
4605 struct lmv_user_md *lum = param->fp_lmv_md;
4607 lum->lum_magic = LMV_USER_MAGIC;
4608 lum->lum_stripe_count = 0;
4609 lum->lum_stripe_offset = -1;
4611 } else if (param->fp_get_lmv) {
4612 struct lmv_user_md *lum = param->fp_lmv_md;
4615 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4618 lum->lum_magic = LMV_MAGIC_V1;
4619 lum->lum_stripe_count = 0;
4620 lum->lum_stripe_offset = mdtidx;
4623 struct lov_user_md *lmm =
4624 ¶m->fp_lmd->lmd_lmm;
4626 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4628 ostid_set_seq(&lmm->lmm_oi,
4629 FID_SEQ_LOV_DEFAULT);
4630 lmm->lmm_stripe_count = 0;
4631 lmm->lmm_stripe_size = 0;
4632 lmm->lmm_stripe_offset = -1;
4635 } else if (errno == ENODATA && parent != NULL) {
4636 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4637 llapi_printf(LLAPI_MSG_NORMAL,
4638 "%s has no stripe info\n", path);
4640 } else if (errno == ENOENT) {
4641 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4642 "warning: %s: %s does not exist",
4645 } else if (errno == ENOTTY) {
4647 llapi_error(LLAPI_MSG_ERROR, ret,
4648 "%s: '%s' not on a Lustre fs?",
4653 llapi_error(LLAPI_MSG_ERROR, ret,
4654 "error: %s: %s failed for %s",
4655 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4656 "IOC_MDC_GETFILESTRIPE", path);
4663 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4664 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4667 /* Do not get down anymore? */
4668 if (param->fp_depth == param->fp_max_depth)
4676 int llapi_getstripe(char *path, struct find_param *param)
4678 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4679 cb_get_mdt_index : cb_getstripe,
4680 cb_common_fini, param);
4683 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4684 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4686 char raw[MAX_IOC_BUFLEN] = {'\0'};
4688 struct obd_ioctl_data data = { 0 };
4691 data.ioc_inlbuf1 = (char *)&type;
4692 data.ioc_inllen1 = sizeof(__u32);
4693 data.ioc_inlbuf2 = (char *)&index;
4694 data.ioc_inllen2 = sizeof(__u32);
4695 data.ioc_pbuf1 = (char *)stat_buf;
4696 data.ioc_plen1 = sizeof(struct obd_statfs);
4697 data.ioc_pbuf2 = (char *)uuid_buf;
4698 data.ioc_plen2 = sizeof(struct obd_uuid);
4700 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4702 llapi_error(LLAPI_MSG_ERROR, rc,
4703 "llapi_obd_statfs: error packing ioctl data");
4707 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4709 return rc < 0 ? -errno : 0;
4712 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4713 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4718 fd = open(path, O_RDONLY);
4721 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4723 /* If we can't even open a file on the filesystem (e.g. with
4724 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4728 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4735 #define MAX_STRING_SIZE 128
4737 int llapi_ping(char *obd_type, char *obd_name)
4743 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4744 obd_type, obd_name);
4748 fd = open(path.gl_pathv[0], O_WRONLY);
4751 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4756 /* The purpose is to send a byte as a ping, whatever this byte is. */
4757 /* coverity[uninit_use_in_call] */
4758 rc = write(fd, buf, 1);
4766 cfs_free_param_data(&path);
4770 int llapi_target_iterate(int type_num, char **obd_type,
4771 void *args, llapi_cb_t cb)
4773 char buf[MAX_STRING_SIZE];
4778 rc = cfs_get_param_paths(¶m, "devices");
4782 fp = fopen(param.gl_pathv[0], "r");
4785 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4790 while (fgets(buf, sizeof(buf), fp) != NULL) {
4791 char *obd_type_name = NULL;
4792 char *obd_name = NULL;
4793 char *obd_uuid = NULL;
4795 struct obd_statfs osfs_buffer;
4797 while(bufp[0] == ' ')
4800 for(i = 0; i < 3; i++) {
4801 obd_type_name = strsep(&bufp, " ");
4803 obd_name = strsep(&bufp, " ");
4804 obd_uuid = strsep(&bufp, " ");
4806 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4808 for (i = 0; i < type_num; i++) {
4809 if (strcmp(obd_type_name, obd_type[i]) != 0)
4812 cb(obd_type_name, obd_name, obd_uuid, args);
4817 cfs_free_param_data(¶m);
4821 static void do_target_check(char *obd_type_name, char *obd_name,
4822 char *obd_uuid, void *args)
4826 rc = llapi_ping(obd_type_name, obd_name);
4827 if (rc == ENOTCONN) {
4828 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4830 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4832 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4836 int llapi_target_check(int type_num, char **obd_type, char *dir)
4838 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4841 #undef MAX_STRING_SIZE
4843 /* Is this a lustre fs? */
4844 int llapi_is_lustre_mnttype(const char *type)
4846 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4849 /* Is this a lustre client fs? */
4850 int llapi_is_lustre_mnt(struct mntent *mnt)
4852 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4853 strstr(mnt->mnt_fsname, ":/") != NULL);
4856 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4858 char fsname[PATH_MAX + 1];
4862 rc = llapi_search_fsname(mnt, fsname);
4866 root = open(mnt, O_RDONLY | O_DIRECTORY);
4869 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4873 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4881 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4882 * format must have %s%s, buf must be > 16
4883 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4884 * then buf = "lustre-MDT0000"
4886 static int get_mdtname(char *name, char *format, char *buf)
4888 char suffix[]="-MDT0000";
4889 int len = strlen(name);
4891 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4892 name[len - 5] = '\0';
4897 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4900 /* Not enough room to add suffix */
4901 llapi_err_noerrno(LLAPI_MSG_ERROR,
4902 "Invalid MDT name |%s|", name);
4907 return sprintf(buf, format, name, suffix);
4910 /** ioctl on filsystem root, with mdtindex sent as data
4911 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4912 * \param mdtidxp pointer to integer within data to be filled in with the
4913 * mdt index (0 if no mdt is specified). NULL won't be filled.
4915 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4923 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4924 Open root and parse mdt index. */
4925 if (mdtname[0] == '/') {
4927 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4928 (char *)mdtname, -1);
4930 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4932 ptr = fsname + strlen(fsname) - 8;
4934 index = strtol(ptr + 4, NULL, 16);
4935 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4939 llapi_err_noerrno(LLAPI_MSG_ERROR,
4940 "Can't open %s: %d\n", mdtname, rc);
4947 rc = ioctl(fd, opc, data);
4956 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4957 int buflen, long long *recno, int *linkno)
4959 const char *fidstr_orig = fidstr;
4961 struct getinfo_fid2path *gf;
4966 while (*fidstr == '[')
4969 sscanf(fidstr, SFID, RFID(&fid));
4970 if (!fid_is_sane(&fid)) {
4971 llapi_err_noerrno(LLAPI_MSG_ERROR,
4972 "bad FID format '%s', should be [seq:oid:ver]"
4973 " (e.g. "DFID")\n", fidstr_orig,
4974 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4978 gf = malloc(sizeof(*gf) + buflen);
4983 gf->gf_recno = *recno;
4984 gf->gf_linkno = *linkno;
4985 gf->gf_pathlen = buflen;
4987 /* Take path or fsname */
4988 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4993 /* strip out instances of // */
4994 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
4995 if ((*a == '/') && (*(a + 1) == '/'))
5002 if (buf[0] == '\0') { /* ROOT path */
5007 *recno = gf->gf_recno;
5008 *linkno = gf->gf_linkno;
5015 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
5018 struct lustre_mdt_attrs *lma;
5022 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
5024 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
5027 lma = (struct lustre_mdt_attrs *)buf;
5028 fid_le_to_cpu(fid, &lma->lma_self_fid);
5032 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
5037 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5046 int llapi_fd2fid(int fd, struct lu_fid *fid)
5050 memset(fid, 0, sizeof(*fid));
5052 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5053 if (rc == -EINVAL || rc == -ENOTTY)
5054 rc = fid_from_lma(NULL, fd, fid);
5059 int llapi_path2fid(const char *path, struct lu_fid *fid)
5063 memset(fid, 0, sizeof(*fid));
5064 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5066 if (errno == ELOOP || errno == ENXIO)
5067 return fid_from_lma(path, -1, fid);
5071 rc = llapi_fd2fid(fd, fid);
5072 if (rc == -EINVAL || rc == -ENOTTY)
5073 rc = fid_from_lma(path, -1, fid);
5079 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5080 char *name, size_t name_size)
5082 struct getparent *gp;
5085 gp = malloc(sizeof(*gp) + name_size);
5089 gp->gp_linkno = linkno;
5090 gp->gp_name_size = name_size;
5092 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5098 *parent_fid = gp->gp_fid;
5100 strncpy(name, gp->gp_name, name_size);
5101 name[name_size - 1] = '\0';
5108 int llapi_path2parent(const char *path, unsigned int linkno,
5109 struct lu_fid *parent_fid, char *name, size_t name_size)
5114 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5118 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5123 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5128 root = open(mnt, O_RDONLY | O_DIRECTORY);
5131 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5135 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5138 llapi_error(LLAPI_MSG_ERROR, rc,
5139 "ioctl on %s for getting connect flags failed", mnt);
5146 * Get a 64-bit value representing the version of file data pointed by fd.
5148 * Each write or truncate, flushed on OST, will change this value. You can use
5149 * this value to verify if file data was modified. This only checks the file
5150 * data, not metadata.
5152 * \param flags 0: no flush pages, usually used it the process has already
5154 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5156 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5157 * pages from clients.
5159 * \retval 0 on success.
5160 * \retval -errno on error.
5162 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5165 struct ioc_data_version idv;
5167 idv.idv_flags = (__u32)flags;
5169 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5173 *data_version = idv.idv_version;
5179 * Flush cached pages from all clients.
5181 * \param fd File descriptor
5185 int llapi_file_flush(int fd)
5189 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5193 * Fetch layout version from OST objects. Layout version on OST objects are
5194 * only set when the file is a mirrored file AND after the file has been
5195 * written at least once.
5197 * It actually fetches the least layout version from the objects.
5199 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5202 struct ioc_data_version idv = { 0 };
5204 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5208 *layout_version = idv.idv_layout_version;
5214 * Create a file without any name open it for read/write
5216 * - file is created as if it were a standard file in the given \a directory
5217 * - file does not appear in \a directory and mtime does not change because
5218 * the filename is handled specially by the Lustre MDS.
5219 * - file is removed at final close
5220 * - file modes are rw------- since it doesn't make sense to have a read-only
5221 * or write-only file that cannot be opened again.
5222 * - if user wants another mode it must use fchmod() on the open file, no
5223 * security problems arise because it cannot be opened by another process.
5225 * \param[in] directory directory from which to inherit layout/MDT idx
5226 * \param[in] idx MDT index on which the file is created,
5227 * \a idx == -1 means no specific MDT is requested
5228 * \param[in] open_flags standard open(2) flags
5230 * \retval 0 on success.
5231 * \retval -errno on error.
5233 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
5235 char file_path[PATH_MAX];
5236 char filename[PATH_MAX];
5237 int saved_errno = errno;
5245 snprintf(filename, sizeof(filename),
5246 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
5248 snprintf(filename, sizeof(filename),
5249 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
5251 rc = snprintf(file_path, sizeof(file_path),
5252 "%s/%s", directory, filename);
5253 if (rc >= sizeof(file_path))
5256 fd = open(file_path,
5257 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
5259 } while (fd < 0 && errno == EEXIST);
5262 llapi_error(LLAPI_MSG_ERROR, errno,
5263 "Cannot create volatile file '%s' in '%s'",
5264 filename + LUSTRE_VOLATILE_HDR_LEN,
5269 /* Unlink file in case this wasn't a Lustre filesystem and the
5270 * magic volatile filename wasn't handled as intended. The
5271 * effect is the same. If volatile open was supported then we
5272 * expect unlink() to return -ENOENT. */
5273 (void)unlink(file_path);
5275 /* Since we are returning successfully we restore errno (and
5276 * mask out possible EEXIST from open() and ENOENT from
5278 errno = saved_errno;
5284 * Swap the layouts between 2 file descriptors
5285 * the 2 files must be open for writing
5286 * first fd received the ioctl, second fd is passed as arg
5287 * this is assymetric but avoid use of root path for ioctl
5289 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5290 int gid, __u64 flags)
5292 struct lustre_swap_layouts lsl;
5297 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5298 rc = fstat(fd1, &st1);
5302 rc = fstat(fd2, &st2);
5307 lsl.sl_flags = flags;
5311 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5315 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5316 struct timeval tv1[2];
5317 struct timeval tv2[2];
5319 memset(tv1, 0, sizeof(tv1));
5320 memset(tv2, 0, sizeof(tv2));
5322 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5323 tv1[0].tv_sec = st1.st_atime;
5324 tv2[0].tv_sec = st2.st_atime;
5326 tv1[0].tv_sec = st2.st_atime;
5327 tv2[0].tv_sec = st1.st_atime;
5330 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5331 tv1[1].tv_sec = st1.st_mtime;
5332 tv2[1].tv_sec = st2.st_mtime;
5334 tv1[1].tv_sec = st2.st_mtime;
5335 tv2[1].tv_sec = st1.st_mtime;
5338 rc = futimes(fd1, tv1);
5342 rc = futimes(fd2, tv2);
5350 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5357 while (grp_id == 0);
5359 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5367 * Swap the layouts between 2 files
5368 * the 2 files are open in write
5370 int llapi_swap_layouts(const char *path1, const char *path2,
5371 __u64 dv1, __u64 dv2, __u64 flags)
5375 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5378 llapi_error(LLAPI_MSG_ERROR, rc,
5379 "error: cannot open '%s' for write", path1);
5383 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5386 llapi_error(LLAPI_MSG_ERROR, rc,
5387 "error: cannot open '%s' for write", path2);
5391 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5393 llapi_error(LLAPI_MSG_ERROR, rc,
5394 "error: cannot swap layout between '%s' and '%s'",
5405 * Attempt to open a file with Lustre file identifier \a fid
5406 * and return an open file descriptor.
5408 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5409 * \param[in] fid Lustre file identifier of file to open
5410 * \param[in] flags open() flags
5412 * \retval non-negative file descriptor on successful open
5413 * \retval -1 if an error occurred
5415 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5418 char mntdir[PATH_MAX];
5419 char path[PATH_MAX];
5422 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5426 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5427 return open(path, flags);
5433 * \param fd File to lock.
5434 * \param gid Group Identifier.
5436 * \retval 0 on success.
5437 * \retval -errno on failure.
5439 int llapi_group_lock(int fd, int gid)
5443 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5446 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5454 * \param fd File to unlock.
5455 * \param gid Group Identifier.
5457 * \retval 0 on success.
5458 * \retval -errno on failure.
5460 int llapi_group_unlock(int fd, int gid)
5464 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5467 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");