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, 2016, 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 <lnet/lnetctl.h>
76 #include <lustre/lustreapi.h>
77 #include <linux/lustre_ostid.h>
78 #include <linux/lustre_ioctl.h>
79 #include "lustreapi_internal.h"
81 static int llapi_msg_level = LLAPI_MSG_MAX;
83 char *mdt_hash_name[] = { "none",
84 LMV_HASH_NAME_ALL_CHARS,
85 LMV_HASH_NAME_FNV_1A_64 };
87 void llapi_msg_set_level(int level)
89 /* ensure level is in the good range */
90 if (level < LLAPI_MSG_OFF)
91 llapi_msg_level = LLAPI_MSG_OFF;
92 else if (level > LLAPI_MSG_MAX)
93 llapi_msg_level = LLAPI_MSG_MAX;
95 llapi_msg_level = level;
98 int llapi_msg_get_level(void)
100 return llapi_msg_level;
103 static void error_callback_default(enum llapi_message_level level, int err,
104 const char *fmt, va_list ap)
106 vfprintf(stderr, fmt, ap);
107 if (level & LLAPI_MSG_NO_ERRNO)
108 fprintf(stderr, "\n");
110 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
113 static void info_callback_default(enum llapi_message_level level, int err,
114 const char *fmt, va_list ap)
116 vfprintf(stdout, fmt, ap);
119 static llapi_log_callback_t llapi_error_callback = error_callback_default;
120 static llapi_log_callback_t llapi_info_callback = info_callback_default;
123 /* llapi_error will preserve errno */
124 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
127 int tmp_errno = errno;
129 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
133 llapi_error_callback(level, abs(err), fmt, args);
138 /* llapi_printf will preserve errno */
139 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
142 int tmp_errno = errno;
144 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
148 llapi_info_callback(level, 0, fmt, args);
154 * Set a custom error logging function. Passing in NULL will reset the logging
155 * callback to its default value.
157 * This function returns the value of the old callback.
159 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
161 llapi_log_callback_t old = llapi_error_callback;
164 llapi_error_callback = cb;
166 llapi_error_callback = error_callback_default;
172 * Set a custom info logging function. Passing in NULL will reset the logging
173 * callback to its default value.
175 * This function returns the value of the old callback.
177 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
179 llapi_log_callback_t old = llapi_info_callback;
182 llapi_info_callback = cb;
184 llapi_info_callback = info_callback_default;
190 * size_units is to be initialized (or zeroed) by caller.
192 int llapi_parse_size(const char *optarg, unsigned long long *size,
193 unsigned long long *size_units, int bytes_spec)
196 char *argbuf = (char *)optarg;
197 unsigned long long frac = 0, frac_d = 1;
199 if (strncmp(optarg, "-", 1) == 0)
202 if (*size_units == 0)
205 *size = strtoull(argbuf, &end, 0);
206 if (end != NULL && *end == '.') {
210 frac = strtoull(argbuf, &end, 10);
211 /* count decimal places */
212 for (i = 0; i < (end - argbuf); i++)
217 if ((*end == 'b') && *(end + 1) == '\0' &&
218 (*size & (~0ULL << (64 - 9))) == 0 &&
220 *size_units = 1 << 9;
221 } else if ((*end == 'b') &&
222 *(end + 1) == '\0' &&
225 } else if ((*end == 'k' || *end == 'K') &&
226 *(end + 1) == '\0' &&
227 (*size & (~0ULL << (64 - 10))) == 0) {
228 *size_units = 1 << 10;
229 } else if ((*end == 'm' || *end == 'M') &&
230 *(end + 1) == '\0' &&
231 (*size & (~0ULL << (64 - 20))) == 0) {
232 *size_units = 1 << 20;
233 } else if ((*end == 'g' || *end == 'G') &&
234 *(end + 1) == '\0' &&
235 (*size & (~0ULL << (64 - 30))) == 0) {
236 *size_units = 1 << 30;
237 } else if ((*end == 't' || *end == 'T') &&
238 *(end + 1) == '\0' &&
239 (*size & (~0ULL << (64 - 40))) == 0) {
240 *size_units = 1ULL << 40;
241 } else if ((*end == 'p' || *end == 'P') &&
242 *(end + 1) == '\0' &&
243 (*size & (~0ULL << (64 - 50))) == 0) {
244 *size_units = 1ULL << 50;
245 } else if ((*end == 'e' || *end == 'E') &&
246 *(end + 1) == '\0' &&
247 (*size & (~0ULL << (64 - 60))) == 0) {
248 *size_units = 1ULL << 60;
253 *size = *size * *size_units + frac * *size_units / frac_d;
258 int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
260 struct obd_ioctl_data *overlay;
263 data->ioc_len = obd_ioctl_packlen(data);
264 data->ioc_version = OBD_IOCTL_VERSION;
266 if (*pbuf != NULL && data->ioc_len > max_len) {
267 fprintf(stderr, "pbuf = %p, ioc_len = %u, max_len = %d\n",
268 *pbuf, data->ioc_len, max_len);
273 *pbuf = malloc(data->ioc_len);
278 overlay = (struct obd_ioctl_data *)*pbuf;
279 memcpy(*pbuf, data, sizeof(*data));
281 ptr = overlay->ioc_bulk;
282 if (data->ioc_inlbuf1) {
283 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
284 ptr += cfs_size_round(data->ioc_inllen1);
287 if (data->ioc_inlbuf2) {
288 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
289 ptr += cfs_size_round(data->ioc_inllen2);
292 if (data->ioc_inlbuf3) {
293 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
294 ptr += cfs_size_round(data->ioc_inllen3);
297 if (data->ioc_inlbuf4) {
298 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
299 ptr += cfs_size_round(data->ioc_inllen4);
305 int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
307 struct obd_ioctl_data *overlay;
313 overlay = (struct obd_ioctl_data *)pbuf;
315 /* Preserve the caller's buffer pointers */
316 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
317 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
318 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
319 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
321 memcpy(data, pbuf, sizeof(*data));
323 ptr = overlay->ioc_bulk;
324 if (data->ioc_inlbuf1) {
325 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
326 ptr += cfs_size_round(data->ioc_inllen1);
329 if (data->ioc_inlbuf2) {
330 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
331 ptr += cfs_size_round(data->ioc_inllen2);
334 if (data->ioc_inlbuf3) {
335 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
336 ptr += cfs_size_round(data->ioc_inllen3);
339 if (data->ioc_inlbuf4) {
340 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
341 ptr += cfs_size_round(data->ioc_inllen4);
347 /* XXX: llapi_xxx() functions return negative values upon failure */
349 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
350 int stripe_count, int stripe_pattern)
354 /* 64 KB is the largest common page size I'm aware of (on ia64), but
355 * check the local page size just in case. */
356 page_size = LOV_MIN_STRIPE_SIZE;
357 if (getpagesize() > page_size) {
358 page_size = getpagesize();
359 llapi_err_noerrno(LLAPI_MSG_WARN,
360 "warning: your page size (%u) is "
361 "larger than expected (%u)", page_size,
362 LOV_MIN_STRIPE_SIZE);
364 if (!llapi_stripe_size_is_aligned(stripe_size)) {
366 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
367 "must be an even multiple of %d bytes",
368 stripe_size, page_size);
371 if (!llapi_stripe_index_is_valid(stripe_offset)) {
373 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
377 if (!llapi_stripe_count_is_valid(stripe_count)) {
379 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
383 if (llapi_stripe_size_is_too_big(stripe_size)) {
385 llapi_error(LLAPI_MSG_ERROR, rc,
386 "warning: stripe size 4G or larger "
387 "is not currently supported and would wrap");
394 * Trim a trailing newline from a string, if it exists.
396 int llapi_chomp_string(char *buf)
412 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
414 static int get_param_lov(const char *path, const char *param,
415 char *buf, size_t buf_size)
417 struct obd_uuid uuid;
420 rc = llapi_file_get_lov_uuid(path, &uuid);
424 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
429 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
431 static int get_param_lmv(const char *path, const char *param,
432 char *buf, size_t buf_size)
434 struct obd_uuid uuid;
437 rc = llapi_file_get_lmv_uuid(path, &uuid);
441 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
445 static int get_mds_md_size(const char *path)
447 char buf[PATH_MAX], inst[PATH_MAX];
448 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
451 rc = llapi_getname(path, inst, sizeof(inst));
455 /* Get the max ea size from llite parameters. */
456 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
457 "max_easize", buf, sizeof(buf));
463 return rc > 0 ? rc : md_size;
466 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
468 return get_param_lmv(path, "uuid", buf, bufsize);
472 * if pool is NULL, search ostname in target_obd
473 * if pool is not NULL:
474 * if pool not found returns errno < 0
475 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
476 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
478 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
480 char buffer[PATH_MAX];
486 /* You need one or the other */
487 if (poolname == NULL && fsname == NULL)
491 len = strlen(ostname);
493 if (poolname == NULL && len == 0)
496 /* Search by poolname and fsname if is not NULL */
497 if (poolname != NULL) {
498 rc = poolpath(¶m, fsname, NULL);
500 snprintf(buffer, sizeof(buffer), "%s/%s",
501 param.gl_pathv[0], poolname);
503 } else if (fsname != NULL) {
504 rc = get_lustre_param_path("lov", fsname,
506 "target_obd", ¶m);
508 strncpy(buffer, param.gl_pathv[0],
514 cfs_free_param_data(¶m);
518 fd = fopen(buffer, "r");
522 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
523 if (poolname == NULL) {
525 /* Search for an ostname in the list of OSTs
526 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
527 ptr = strchr(buffer, ' ');
529 (strncmp(ptr + 1, ostname, len) == 0)) {
534 /* Search for an ostname in a pool,
535 (or an existing non-empty pool if no ostname) */
536 if ((ostname == NULL) ||
537 (strncmp(buffer, ostname, len) == 0)) {
548 * Open a Lustre file.
550 * \param name the name of the file to be opened
551 * \param flags access mode, see flags in open(2)
552 * \param mode permission of the file if it is created, see mode in open(2)
553 * \param param stripe pattern of the newly created file
555 * \retval file descriptor of opened file
556 * \retval negative errno on failure
558 int llapi_file_open_param(const char *name, int flags, mode_t mode,
559 const struct llapi_stripe_param *param)
561 char fsname[MAX_OBD_NAME + 1] = { 0 };
562 char *pool_name = param->lsp_pool;
563 struct lov_user_md *lum = NULL;
564 size_t lum_size = sizeof(*lum);
567 /* Make sure we are on a Lustre file system */
568 rc = llapi_search_fsname(name, fsname);
570 llapi_error(LLAPI_MSG_ERROR, rc,
571 "'%s' is not on a Lustre filesystem",
576 /* Check if the stripe pattern is sane. */
577 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
578 param->lsp_stripe_offset,
579 param->lsp_stripe_count,
580 param->lsp_stripe_pattern);
584 /* Make sure we have a good pool */
585 if (pool_name != NULL) {
586 /* in case user gives the full pool name <fsname>.<poolname>,
587 * strip the fsname */
588 char *ptr = strchr(pool_name, '.');
591 if (strcmp(pool_name, fsname) != 0) {
593 llapi_err_noerrno(LLAPI_MSG_ERROR,
594 "Pool '%s' is not on filesystem '%s'",
601 /* Make sure the pool exists and is non-empty */
602 rc = llapi_search_ost(fsname, pool_name, NULL);
604 char *err = rc == 0 ? "has no OSTs" : "does not exist";
606 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
607 fsname, pool_name, err);
611 lum_size = sizeof(struct lov_user_md_v3);
614 /* sanity check of target list */
615 if (param->lsp_is_specific) {
616 char ostname[MAX_OBD_NAME + 1];
620 for (i = 0; i < param->lsp_stripe_count; i++) {
621 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
622 fsname, param->lsp_osts[i]);
623 rc = llapi_search_ost(fsname, pool_name, ostname);
628 llapi_error(LLAPI_MSG_ERROR, rc,
629 "%s: cannot find OST %s in %s",
636 /* Make sure stripe offset is in OST list. */
637 if (param->lsp_osts[i] == param->lsp_stripe_offset)
641 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
642 "%s: stripe offset '%d' is not in the "
644 __func__, param->lsp_stripe_offset);
648 lum_size = lov_user_md_size(param->lsp_stripe_count,
649 LOV_USER_MAGIC_SPECIFIC);
652 lum = calloc(1, lum_size);
657 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
659 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
660 flags = O_DIRECTORY | O_RDONLY;
667 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
672 /* Initialize IOCTL striping pattern structure */
673 lum->lmm_magic = LOV_USER_MAGIC_V1;
674 lum->lmm_pattern = param->lsp_stripe_pattern;
675 lum->lmm_stripe_size = param->lsp_stripe_size;
676 lum->lmm_stripe_count = param->lsp_stripe_count;
677 lum->lmm_stripe_offset = param->lsp_stripe_offset;
678 if (pool_name != NULL) {
679 struct lov_user_md_v3 *lumv3 = (void *)lum;
681 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
682 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
684 if (param->lsp_is_specific) {
685 struct lov_user_md_v3 *lumv3 = (void *)lum;
688 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
689 if (pool_name == NULL) {
690 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
691 * OST list, therefore if pool is not specified we have
692 * to pack a null pool name for placeholder. */
693 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
696 for (i = 0; i < param->lsp_stripe_count; i++)
697 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
700 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
701 char *errmsg = "stripe already set";
704 if (errno != EEXIST && errno != EALREADY)
705 errmsg = strerror(errno);
707 llapi_err_noerrno(LLAPI_MSG_ERROR,
708 "error on ioctl %#jx for '%s' (%d): %s",
709 (uintmax_t)LL_IOC_LOV_SETSTRIPE, name, fd,
721 int llapi_file_open_pool(const char *name, int flags, int mode,
722 unsigned long long stripe_size, int stripe_offset,
723 int stripe_count, int stripe_pattern, char *pool_name)
725 const struct llapi_stripe_param param = {
726 .lsp_stripe_size = stripe_size,
727 .lsp_stripe_count = stripe_count,
728 .lsp_stripe_pattern = stripe_pattern,
729 .lsp_stripe_offset = stripe_offset,
730 .lsp_pool = pool_name
732 return llapi_file_open_param(name, flags, mode, ¶m);
735 int llapi_file_open(const char *name, int flags, int mode,
736 unsigned long long stripe_size, int stripe_offset,
737 int stripe_count, int stripe_pattern)
739 return llapi_file_open_pool(name, flags, mode, stripe_size,
740 stripe_offset, stripe_count,
741 stripe_pattern, NULL);
744 int llapi_file_create(const char *name, unsigned long long stripe_size,
745 int stripe_offset, int stripe_count, int stripe_pattern)
749 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
750 stripe_offset, stripe_count, stripe_pattern,
759 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
760 int stripe_offset, int stripe_count,
761 int stripe_pattern, char *pool_name)
765 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
766 stripe_offset, stripe_count, stripe_pattern,
775 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
776 int stripe_count, int stripe_pattern,
777 const char *pool_name)
779 struct lmv_user_md lum = { 0 };
783 lum.lum_magic = LMV_USER_MAGIC;
784 lum.lum_stripe_offset = stripe_offset;
785 lum.lum_stripe_count = stripe_count;
786 lum.lum_hash_type = stripe_pattern;
787 if (pool_name != NULL) {
788 if (strlen(pool_name) >= sizeof(lum.lum_pool_name)) {
789 llapi_err_noerrno(LLAPI_MSG_ERROR,
790 "error LL_IOC_LMV_SET_DEFAULT_STRIPE '%s'"
791 ": too large pool name: %s", name, pool_name);
794 strncpy(lum.lum_pool_name, pool_name,
795 sizeof(lum.lum_pool_name));
798 fd = open(name, O_DIRECTORY | O_RDONLY);
801 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
805 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lum);
807 char *errmsg = "stripe already set";
809 if (errno != EEXIST && errno != EALREADY)
810 errmsg = strerror(errno);
812 llapi_err_noerrno(LLAPI_MSG_ERROR,
813 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
820 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
821 int stripe_count, int stripe_pattern,
822 const char *pool_name)
824 struct lmv_user_md lmu = { 0 };
825 struct obd_ioctl_data data = { 0 };
828 char *dirpath = NULL;
829 char *namepath = NULL;
835 dirpath = strdup(name);
836 namepath = strdup(name);
837 if (!dirpath || !namepath)
840 lmu.lum_magic = LMV_USER_MAGIC;
841 lmu.lum_stripe_offset = stripe_offset;
842 lmu.lum_stripe_count = stripe_count;
843 lmu.lum_hash_type = stripe_pattern;
844 if (pool_name != NULL) {
845 if (strlen(pool_name) > LOV_MAXPOOLNAME) {
846 llapi_err_noerrno(LLAPI_MSG_ERROR,
847 "error LL_IOC_LMV_SETSTRIPE '%s' : too large"
848 "pool name: %s", name, pool_name);
852 memcpy(lmu.lum_pool_name, pool_name, strlen(pool_name));
855 filename = basename(namepath);
856 dir = dirname(dirpath);
858 data.ioc_inlbuf1 = (char *)filename;
859 data.ioc_inllen1 = strlen(filename) + 1;
860 data.ioc_inlbuf2 = (char *)&lmu;
861 data.ioc_inllen2 = sizeof(struct lmv_user_md);
862 data.ioc_type = mode;
863 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
865 llapi_error(LLAPI_MSG_ERROR, rc,
866 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
871 fd = open(dir, O_DIRECTORY | O_RDONLY);
874 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
878 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
879 char *errmsg = "stripe already set";
881 if (errno != EEXIST && errno != EALREADY)
882 errmsg = strerror(errno);
884 llapi_err_noerrno(LLAPI_MSG_ERROR,
885 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
895 int llapi_direntry_remove(char *dname)
897 char *dirpath = NULL;
898 char *namepath = NULL;
904 dirpath = strdup(dname);
905 namepath = strdup(dname);
906 if (!dirpath || !namepath)
909 filename = basename(namepath);
911 dir = dirname(dirpath);
913 fd = open(dir, O_DIRECTORY | O_RDONLY);
916 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
921 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
922 char *errmsg = strerror(errno);
923 llapi_err_noerrno(LLAPI_MSG_ERROR,
924 "error on ioctl %#jx for '%s' (%d): %s",
925 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
937 * Find the fsname, the full path, and/or an open fd.
938 * Either the fsname or path must not be NULL
940 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
943 char buf[PATH_MAX], mntdir[PATH_MAX];
946 int idx = 0, len = 0, mntlen, fd;
949 /* get the mount point */
950 fp = setmntent(PROC_MOUNTS, "r");
953 llapi_error(LLAPI_MSG_ERROR, rc,
954 "setmntent(%s) failed", PROC_MOUNTS);
958 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
961 if (!llapi_is_lustre_mnt(&mnt))
964 if ((want & WANT_INDEX) && (idx++ != index))
967 mntlen = strlen(mnt.mnt_dir);
968 ptr = strchr(mnt.mnt_fsname, '/');
969 while (ptr && *ptr == '/')
971 /* thanks to the call to llapi_is_lustre_mnt() above,
972 * we are sure that mnt.mnt_fsname contains ":/",
973 * so ptr should never be NULL */
977 while (*ptr_end != '/' && *ptr_end != '\0')
980 /* Check the fsname for a match, if given */
981 if (!(want & WANT_FSNAME) && fsname != NULL &&
982 (strlen(fsname) > 0) &&
983 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
986 /* If the path isn't set return the first one we find */
987 if (path == NULL || strlen(path) == 0) {
988 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
989 mntdir[strlen(mnt.mnt_dir)] = '\0';
990 if ((want & WANT_FSNAME) && fsname != NULL) {
991 strncpy(fsname, ptr, ptr_end - ptr);
992 fsname[ptr_end - ptr] = '\0';
996 /* Otherwise find the longest matching path */
997 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
998 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
999 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1000 mntdir[strlen(mnt.mnt_dir)] = '\0';
1002 if ((want & WANT_FSNAME) && fsname != NULL) {
1003 strncpy(fsname, ptr, ptr_end - ptr);
1004 fsname[ptr_end - ptr] = '\0';
1013 if ((want & WANT_PATH) && path != NULL) {
1014 strncpy(path, mntdir, strlen(mntdir));
1015 path[strlen(mntdir)] = '\0';
1017 if (want & WANT_FD) {
1018 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1021 llapi_error(LLAPI_MSG_ERROR, rc,
1022 "error opening '%s'", mntdir);
1028 } else if (want & WANT_ERROR)
1029 llapi_err_noerrno(LLAPI_MSG_ERROR,
1030 "can't find fs root for '%s': %d",
1031 (want & WANT_PATH) ? fsname : path, rc);
1036 * search lustre mounts
1038 * Calling this function will return to the user the mount point, mntdir, and
1039 * the file system name, fsname, if the user passed a buffer to this routine.
1041 * The user inputs are pathname and index. If the pathname is supplied then
1042 * the value of the index will be ignored. The pathname will return data if
1043 * the pathname is located on a lustre mount. Index is used to pick which
1044 * mount point you want in the case of multiple mounted lustre file systems.
1045 * See function lfs_osts in lfs.c for an example of the index use.
1047 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1050 int want = WANT_PATH, idx = -1;
1052 if (!pathname || pathname[0] == '\0') {
1056 strcpy(mntdir, pathname);
1059 want |= WANT_FSNAME;
1060 return get_root_path(want, fsname, NULL, mntdir, idx);
1063 /* Given a path, find the corresponding Lustre fsname */
1064 int llapi_search_fsname(const char *pathname, char *fsname)
1069 path = realpath(pathname, NULL);
1071 char buf[PATH_MAX], *ptr;
1074 if (pathname[0] != '/') {
1075 /* Need an absolute path, but realpath() only works for
1076 * pathnames that actually exist. We go through the
1077 * extra hurdle of dirname(getcwd() + pathname) in
1078 * case the relative pathname contains ".." in it. */
1079 if (getcwd(buf, sizeof(buf) - 2) == NULL)
1081 rc = strlcat(buf, "/", sizeof(buf));
1082 if (rc >= sizeof(buf))
1085 rc = strlcat(buf, pathname, sizeof(buf));
1086 if (rc >= sizeof(buf))
1088 path = realpath(buf, NULL);
1090 ptr = strrchr(buf, '/');
1094 path = realpath(buf, NULL);
1097 llapi_error(LLAPI_MSG_ERROR, rc,
1098 "pathname '%s' cannot expand",
1104 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1109 int llapi_search_rootpath(char *pathname, const char *fsname)
1111 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1114 int llapi_getname(const char *path, char *buf, size_t size)
1116 struct obd_uuid uuid_buf;
1117 char *uuid = uuid_buf.uuid;
1120 memset(&uuid_buf, 0, sizeof(uuid_buf));
1121 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1125 /* We want to turn lustre-clilov-ffff88002738bc00 into
1126 * lustre-ffff88002738bc00. */
1128 nr = snprintf(buf, size, "%.*s-%s",
1129 (int) (strlen(uuid) - 24), uuid,
1130 uuid + strlen(uuid) - 16);
1139 * Get the list of pool members.
1140 * \param poolname string of format \<fsname\>.\<poolname\>
1141 * \param members caller-allocated array of char*
1142 * \param list_size size of the members array
1143 * \param buffer caller-allocated buffer for storing OST names
1144 * \param buffer_size size of the buffer
1146 * \return number of members retrieved for this pool
1147 * \retval -error failure
1149 int llapi_get_poolmembers(const char *poolname, char **members,
1150 int list_size, char *buffer, int buffer_size)
1152 char fsname[PATH_MAX];
1161 /* name is FSNAME.POOLNAME */
1162 if (strlen(poolname) >= sizeof(fsname))
1164 strlcpy(fsname, poolname, sizeof(fsname));
1165 pool = strchr(fsname, '.');
1172 rc = poolpath(&pathname, fsname, NULL);
1174 llapi_error(LLAPI_MSG_ERROR, rc,
1175 "Lustre filesystem '%s' not found",
1180 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1181 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1182 cfs_free_param_data(&pathname);
1183 if (rc >= sizeof(buf))
1185 fd = fopen(buf, "r");
1188 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1193 while (fgets(buf, sizeof(buf), fd) != NULL) {
1194 if (nb_entries >= list_size) {
1198 buf[sizeof(buf) - 1] = '\0';
1200 tmp = strchr(buf, '\n');
1203 if (used + strlen(buf) + 1 > buffer_size) {
1208 strcpy(buffer + used, buf);
1209 members[nb_entries] = buffer + used;
1210 used += strlen(buf) + 1;
1220 * Get the list of pools in a filesystem.
1221 * \param name filesystem name or path
1222 * \param poollist caller-allocated array of char*
1223 * \param list_size size of the poollist array
1224 * \param buffer caller-allocated buffer for storing pool names
1225 * \param buffer_size size of the buffer
1227 * \return number of pools retrieved for this filesystem
1228 * \retval -error failure
1230 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1231 char *buffer, int buffer_size)
1233 char rname[PATH_MAX];
1239 struct dirent *cookie = NULL;
1241 unsigned int nb_entries = 0;
1242 unsigned int used = 0;
1245 /* initialize output array */
1246 for (i = 0; i < list_size; i++)
1249 /* is name a pathname ? */
1250 ptr = strchr(name, '/');
1252 /* only absolute pathname is supported */
1256 if (!realpath(name, rname)) {
1258 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1263 fsname = strdup(rname);
1267 rc = poolpath(&pathname, NULL, rname);
1269 /* name is FSNAME */
1270 fsname = strdup(name);
1273 rc = poolpath(&pathname, fsname, NULL);
1276 llapi_error(LLAPI_MSG_ERROR, rc,
1277 "Lustre filesystem '%s' not found", name);
1281 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1282 dir = opendir(pathname.gl_pathv[0]);
1285 llapi_error(LLAPI_MSG_ERROR, rc,
1286 "Could not open pool list for '%s'",
1292 rc = readdir_r(dir, &pool, &cookie);
1295 llapi_error(LLAPI_MSG_ERROR, rc,
1296 "Error reading pool list for '%s'", name);
1298 } else if ((rc == 0) && (cookie == NULL)) {
1299 /* end of directory */
1303 /* ignore . and .. */
1304 if (!strcmp(pool.d_name, ".") || !strcmp(pool.d_name, ".."))
1307 /* check output bounds */
1308 if (nb_entries >= list_size) {
1313 /* +2 for '.' and final '\0' */
1314 if (used + strlen(pool.d_name) + strlen(fsname) + 2
1320 sprintf(buffer + used, "%s.%s", fsname, pool.d_name);
1321 poollist[nb_entries] = buffer + used;
1322 used += strlen(pool.d_name) + strlen(fsname) + 2;
1329 cfs_free_param_data(&pathname);
1332 return rc != 0 ? rc : nb_entries;
1335 /* wrapper for lfs.c and obd.c */
1336 int llapi_poollist(const char *name)
1338 /* list of pool names (assume that pool count is smaller
1340 char **list, *buffer = NULL, *fsname = (char *)name;
1341 char *poolname = NULL, *tmp = NULL, data[16];
1342 enum param_filter type = FILTER_BY_PATH;
1343 int obdcount, bufsize, rc, nb, i;
1348 if (name[0] != '/') {
1349 fsname = strdup(name);
1353 poolname = strchr(fsname, '.');
1356 type = FILTER_BY_FS_NAME;
1359 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1360 data, sizeof(data));
1363 obdcount = atoi(data);
1365 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1366 * and also an array to store the pointers for all that
1367 * allocated space. */
1369 bufsize = sizeof(struct obd_uuid) * obdcount;
1370 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1371 if (buffer == NULL) {
1375 list = (char **) (buffer + bufsize);
1378 /* name is a path or fsname */
1379 nb = llapi_get_poollist(name, list, obdcount,
1382 /* name is a pool name (<fsname>.<poolname>) */
1383 nb = llapi_get_poolmembers(name, list, obdcount,
1387 if (nb == -EOVERFLOW) {
1390 goto retry_get_pools;
1393 for (i = 0; i < nb; i++)
1394 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1395 rc = (nb < 0 ? nb : 0);
1399 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1404 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1405 void *data, struct dirent64 *de);
1407 #define OBD_NOT_FOUND (-1)
1409 static int common_param_init(struct find_param *param, char *path)
1411 int lum_size = get_mds_md_size(path);
1413 if (lum_size < PATH_MAX + 1)
1414 lum_size = PATH_MAX + 1;
1416 param->fp_lum_size = lum_size;
1417 param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
1418 if (param->fp_lmd == NULL) {
1419 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1420 "error: allocation of %zu bytes for ioctl",
1421 sizeof(lstat_t) + param->fp_lum_size);
1425 param->fp_lmv_stripe_count = 256;
1426 param->fp_lmv_md = calloc(1,
1427 lmv_user_md_size(param->fp_lmv_stripe_count,
1429 if (param->fp_lmv_md == NULL) {
1430 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1431 "error: allocation of %d bytes for ioctl",
1432 lmv_user_md_size(param->fp_lmv_stripe_count,
1437 param->fp_got_uuids = 0;
1438 param->fp_obd_indexes = NULL;
1439 param->fp_obd_index = OBD_NOT_FOUND;
1440 if (!param->fp_migrate)
1441 param->fp_mdt_index = OBD_NOT_FOUND;
1445 static void find_param_fini(struct find_param *param)
1447 if (param->fp_obd_indexes)
1448 free(param->fp_obd_indexes);
1451 free(param->fp_lmd);
1453 if (param->fp_lmv_md)
1454 free(param->fp_lmv_md);
1457 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1458 struct dirent64 *de)
1460 struct find_param *param = data;
1466 /* set errno upon failure */
1467 static DIR *opendir_parent(const char *path)
1473 path_copy = strdup(path);
1474 if (path_copy == NULL)
1477 parent_path = dirname(path_copy);
1478 parent = opendir(parent_path);
1484 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1489 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1490 if (param->fp_get_default_lmv)
1491 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1493 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1495 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1496 if (errno == E2BIG && ret != 0) {
1500 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1501 if (stripe_count <= param->fp_lmv_stripe_count)
1504 free(param->fp_lmv_md);
1505 param->fp_lmv_stripe_count = stripe_count;
1506 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1507 param->fp_lmv_md = malloc(lmv_size);
1508 if (param->fp_lmv_md == NULL) {
1509 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1510 "error: allocation of %d bytes for ioctl",
1511 lmv_user_md_size(param->fp_lmv_stripe_count,
1520 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1521 struct lov_user_mds_data *lmd, int lumlen)
1523 lstat_t *st = &lmd->lmd_st;
1526 if (parent == NULL && dir == NULL)
1530 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1531 } else if (parent) {
1532 char *fname = strrchr(path, '/');
1534 /* To avoid opening, locking, and closing each file on the
1535 * client if that is not needed. The GETFILEINFO ioctl can
1536 * be done on the patent dir with a single open for all
1537 * files in that directory, and it also doesn't pollute the
1538 * client dcache with millions of dentries when traversing
1539 * a large filesystem. */
1540 fname = (fname == NULL ? path : fname + 1);
1541 /* retrieve needed file info */
1542 strlcpy((char *)lmd, fname, lumlen);
1543 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1547 if (errno == ENOTTY) {
1548 /* ioctl is not supported, it is not a lustre fs.
1549 * Do the regular lstat(2) instead. */
1550 ret = lstat_f(path, st);
1553 llapi_error(LLAPI_MSG_ERROR, ret,
1554 "error: %s: lstat failed for %s",
1557 } else if (errno == ENOENT) {
1559 llapi_error(LLAPI_MSG_WARN, ret,
1560 "warning: %s: %s does not exist",
1562 } else if (errno != EISDIR) {
1564 llapi_error(LLAPI_MSG_ERROR, ret,
1565 "%s ioctl failed for %s.",
1566 dir ? "LL_IOC_MDC_GETINFO" :
1567 "IOC_MDC_GETFILEINFO", path);
1570 llapi_error(LLAPI_MSG_ERROR, ret,
1571 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1578 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1579 semantic_func_t sem_init,
1580 semantic_func_t sem_fini, void *data,
1581 struct dirent64 *de)
1583 struct find_param *param = (struct find_param *)data;
1584 struct dirent64 *dent;
1592 if (!d && errno != ENOTDIR) {
1594 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1597 } else if (!d && !parent) {
1598 /* ENOTDIR. Open the parent dir. */
1599 p = opendir_parent(path);
1606 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1612 while ((dent = readdir64(d)) != NULL) {
1615 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1618 /* Don't traverse .lustre directory */
1619 if (!(strcmp(dent->d_name, dot_lustre_name)))
1623 if ((len + dent->d_reclen + 2) > size) {
1624 llapi_err_noerrno(LLAPI_MSG_ERROR,
1625 "error: %s: string buffer is too small",
1630 strcat(path, dent->d_name);
1632 if (dent->d_type == DT_UNKNOWN) {
1633 lstat_t *st = ¶m->fp_lmd->lmd_st;
1635 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1636 param->fp_lum_size);
1638 dent->d_type = IFTODT(st->st_mode);
1645 switch (dent->d_type) {
1647 llapi_err_noerrno(LLAPI_MSG_ERROR,
1648 "error: %s: '%s' is UNKNOWN type %d",
1649 __func__, dent->d_name, dent->d_type);
1652 rc = llapi_semantic_traverse(path, size, d, sem_init,
1653 sem_fini, data, dent);
1654 if (rc != 0 && ret == 0)
1660 rc = sem_init(path, d, NULL, data, dent);
1661 if (rc < 0 && ret == 0)
1664 if (sem_fini && rc == 0)
1665 sem_fini(path, d, NULL, data, dent);
1673 sem_fini(path, parent, &d, data, de);
1682 static int param_callback(char *path, semantic_func_t sem_init,
1683 semantic_func_t sem_fini, struct find_param *param)
1685 int ret, len = strlen(path);
1688 if (len > PATH_MAX) {
1690 llapi_error(LLAPI_MSG_ERROR, ret,
1691 "Path name '%s' is too long", path);
1695 buf = (char *)malloc(PATH_MAX + 1);
1699 strlcpy(buf, path, PATH_MAX + 1);
1700 ret = common_param_init(param, buf);
1704 param->fp_depth = 0;
1706 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1707 sem_fini, param, NULL);
1709 find_param_fini(param);
1711 return ret < 0 ? ret : 0;
1714 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1716 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1719 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1724 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1726 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1729 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1734 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1738 fd = open(path, O_RDONLY | O_NONBLOCK);
1741 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1745 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1751 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1755 fd = open(path, O_RDONLY | O_NONBLOCK);
1758 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1762 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1774 * If uuidp is NULL, return the number of available obd uuids.
1775 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1776 * there are more OSTs than allocated to uuidp, then an error is returned with
1777 * the ost_count set to number of available obd uuids.
1779 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1780 int *ost_count, enum tgt_type type)
1782 char buf[PATH_MAX], format[32];
1783 int rc = 0, index = 0;
1784 struct obd_uuid name;
1788 /* Get the lov name */
1789 if (type == LOV_TYPE)
1790 rc = llapi_file_fget_lov_uuid(fd, &name);
1792 rc = llapi_file_fget_lmv_uuid(fd, &name);
1796 /* Now get the ost uuids */
1797 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
1798 FILTER_BY_EXACT, "target_obd", ¶m);
1802 fp = fopen(param.gl_pathv[0], "r");
1805 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
1810 snprintf(format, sizeof(format),
1811 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
1812 while (fgets(buf, sizeof(buf), fp) != NULL) {
1813 if (uuidp && (index < *ost_count)) {
1814 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
1822 if (uuidp && (index > *ost_count))
1827 cfs_free_param_data(¶m);
1831 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1833 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1836 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1841 root = open(mnt, O_RDONLY | O_DIRECTORY);
1844 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1849 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
1857 /* Check if user specified value matches a real uuid. Ignore _UUID,
1858 * -osc-4ba41334, other trailing gunk in comparison.
1859 * @param real_uuid ends in "_UUID"
1860 * @param search_uuid may or may not end in "_UUID"
1862 int llapi_uuid_match(char *real_uuid, char *search_uuid)
1864 int cmplen = strlen(real_uuid);
1865 int searchlen = strlen(search_uuid);
1867 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
1869 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
1872 /* The UUIDs may legitimately be different lengths, if
1873 * the system was upgraded from an older version. */
1874 if (cmplen != searchlen)
1877 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
1880 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
1881 * returned in param->fp_obd_index */
1882 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
1884 struct obd_uuid obd_uuid;
1891 if (param->fp_got_uuids)
1894 /* Get the lov/lmv name */
1895 if (param->fp_get_lmv)
1896 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
1898 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
1900 if (rc != -ENOTTY) {
1901 llapi_error(LLAPI_MSG_ERROR, rc,
1902 "error: can't get %s name: %s",
1903 param->fp_get_lmv ? "lmv" : "lov",
1911 param->fp_got_uuids = 1;
1913 /* Now get the ost uuids */
1914 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
1915 obd_uuid.uuid, FILTER_BY_EXACT,
1916 "target_obd", ¶m_data);
1920 fp = fopen(param_data.gl_pathv[0], "r");
1923 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
1924 param_data.gl_pathv[0]);
1928 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
1929 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
1930 param->fp_get_lmv ? "MDTS" : "OBDS");
1932 snprintf(format, sizeof(format),
1933 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
1934 while (fgets(buf, sizeof(buf), fp) != NULL) {
1937 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
1940 if (param->fp_obd_uuid) {
1941 if (llapi_uuid_match(obd_uuid.uuid,
1942 param->fp_obd_uuid->uuid)) {
1943 param->fp_obd_index = index;
1946 } else if (!param->fp_quiet && !param->fp_obds_printed) {
1947 /* Print everything */
1948 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
1951 param->fp_obds_printed = 1;
1955 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
1956 llapi_err_noerrno(LLAPI_MSG_ERROR,
1957 "error: %s: unknown obduuid: %s",
1958 __func__, param->fp_obd_uuid->uuid);
1962 cfs_free_param_data(¶m_data);
1966 /* In this case, param->fp_obd_uuid will be an array of obduuids and
1967 * obd index for all these obduuids will be returned in
1968 * param->fp_obd_indexes */
1969 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
1970 int num_obds, int **obdindexes, int *obdindex,
1973 int ret, obdcount, obd_valid = 0, obdnum;
1975 struct obd_uuid *uuids = NULL;
1979 if (type == LOV_TYPE)
1980 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
1982 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
1986 obdcount = atoi(buf);
1987 uuids = malloc(obdcount * sizeof(struct obd_uuid));
1992 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
1994 if (ret == -EOVERFLOW) {
1995 struct obd_uuid *uuids_temp;
1997 uuids_temp = realloc(uuids, obdcount *
1998 sizeof(struct obd_uuid));
1999 if (uuids_temp != NULL) {
2001 goto retry_get_uuids;
2006 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2010 indexes = malloc(num_obds * sizeof(*obdindex));
2011 if (indexes == NULL) {
2016 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2019 /* The user may have specified a simple index */
2020 i = strtol(obduuids[obdnum].uuid, &end, 0);
2021 if (end && *end == '\0' && i < obdcount) {
2022 indexes[obdnum] = i;
2025 for (i = 0; i < obdcount; i++) {
2026 if (llapi_uuid_match(uuids[i].uuid,
2027 obduuids[obdnum].uuid)) {
2028 indexes[obdnum] = i;
2034 if (i >= obdcount) {
2035 indexes[obdnum] = OBD_NOT_FOUND;
2036 llapi_err_noerrno(LLAPI_MSG_ERROR,
2037 "error: %s: unknown obduuid: %s",
2038 __func__, obduuids[obdnum].uuid);
2044 *obdindex = OBD_NOT_FOUND;
2046 *obdindex = obd_valid;
2048 *obdindexes = indexes;
2056 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2060 if (param->fp_mdt_uuid) {
2061 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2063 ¶m->fp_mdt_indexes,
2064 ¶m->fp_mdt_index, LMV_TYPE);
2069 if (param->fp_obd_uuid) {
2070 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2072 ¶m->fp_obd_indexes,
2073 ¶m->fp_obd_index, LOV_TYPE);
2078 param->fp_got_uuids = 1;
2083 int llapi_ostlist(char *path, struct find_param *param)
2088 fd = open(path, O_RDONLY | O_DIRECTORY);
2092 ret = setup_obd_uuid(fd, path, param);
2099 * Tries to determine the default stripe attributes for a given filesystem. The
2100 * filesystem to check should be specified by fsname, or will be determined
2103 static int sattr_get_defaults(const char *const fsname,
2104 unsigned int *scount,
2105 unsigned int *ssize,
2106 unsigned int *soffset)
2112 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2113 "stripecount", val, sizeof(val));
2116 *scount = atoi(val);
2120 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2121 "stripesize", val, sizeof(val));
2128 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2129 "stripeoffset", val, sizeof(val));
2132 *soffset = atoi(val);
2139 * Tries to gather the default stripe attributes for a given filesystem. If
2140 * the attributes can be determined, they are cached for easy retreival the
2141 * next time they are needed. Only a single filesystem's attributes are
2144 int sattr_cache_get_defaults(const char *const fsname,
2145 const char *const pathname, unsigned int *scount,
2146 unsigned int *ssize, unsigned int *soffset)
2149 char fsname[PATH_MAX + 1];
2150 unsigned int stripecount;
2151 unsigned int stripesize;
2152 unsigned int stripeoffset;
2158 char fsname_buf[PATH_MAX + 1];
2159 unsigned int tmp[3];
2161 if (fsname == NULL) {
2162 rc = llapi_search_fsname(pathname, fsname_buf);
2166 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2169 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2171 * Ensure all 3 sattrs (count, size, and offset) are
2172 * successfully retrieved and stored in tmp before writing to
2175 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2179 cache.stripecount = tmp[0];
2180 cache.stripesize = tmp[1];
2181 cache.stripeoffset = tmp[2];
2182 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2186 *scount = cache.stripecount;
2188 *ssize = cache.stripesize;
2190 *soffset = cache.stripeoffset;
2195 enum lov_dump_flags {
2196 LDF_IS_DIR = 0x0001,
2197 LDF_IS_RAW = 0x0002,
2198 LDF_INDENT = 0x0004,
2199 LDF_SKIP_OBJS = 0x0008,
2203 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2204 struct lov_user_ost_data_v1 *objects,
2205 int verbose, int depth, char *pool_name,
2206 enum lov_dump_flags flags)
2208 bool is_dir = flags & LDF_IS_DIR;
2209 bool is_raw = flags & LDF_IS_RAW;
2210 bool indent = flags & LDF_INDENT;
2211 bool yaml = flags & LDF_YAML;
2212 bool skip_objs = flags & LDF_SKIP_OBJS;
2213 char *prefix = is_dir ? "" : "lmm_";
2214 char *separator = "";
2215 char *space = indent ? " " : "";
2218 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2219 lmm_oi_set_seq(&lum->lmm_oi, 0);
2220 if (!indent && (verbose & VERBOSE_DETAIL))
2221 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2224 if (!yaml && !indent && depth && path &&
2225 ((verbose != VERBOSE_OBJID) || !is_dir))
2226 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2228 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2229 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2230 space, prefix, lum->lmm_magic);
2231 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2233 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2234 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2236 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2238 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2243 if (verbose & ~VERBOSE_DFID)
2244 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2246 /* This needs a bit of hand-holding since old 1.x lmm_oi
2247 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2248 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2249 * a real FID. Ideally the 2.x code would have stored this
2250 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2251 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2252 * worked properly (especially since IGIF FIDs use mds_inum as
2253 * the FID SEQ), but unfortunately that didn't happen.
2255 * Print it to look like an IGIF FID, even though the fields
2256 * are reversed on disk, so that it makes sense to userspace.
2258 * Don't use ostid_id() and ostid_seq(), since they assume the
2259 * oi_fid fields are in the right order. This is why there are
2260 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2262 * For newer layout types hopefully this will be a real FID. */
2263 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2264 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2265 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2266 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2267 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2269 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2272 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2276 if (verbose & VERBOSE_COUNT) {
2277 if (verbose & ~VERBOSE_COUNT)
2278 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2281 if (!is_raw && lum->lmm_stripe_count == 0) {
2282 unsigned int scount;
2283 rc = sattr_cache_get_defaults(NULL, path,
2287 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2290 llapi_error(LLAPI_MSG_ERROR, rc,
2291 "Cannot determine default"
2294 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2295 lum->lmm_stripe_count ==
2296 (typeof(lum->lmm_stripe_count))(-1)
2297 ? -1 : lum->lmm_stripe_count);
2300 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2301 (__s16)lum->lmm_stripe_count);
2303 if (!yaml && is_dir)
2309 if (verbose & VERBOSE_SIZE) {
2310 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2311 if (verbose & ~VERBOSE_SIZE)
2312 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2314 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2316 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2319 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2321 llapi_error(LLAPI_MSG_ERROR, rc,
2322 "Cannot determine default"
2325 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2326 lum->lmm_stripe_size);
2328 if (!yaml && is_dir)
2334 if ((verbose & VERBOSE_LAYOUT) && !is_dir) {
2335 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2336 if (verbose & ~VERBOSE_LAYOUT)
2337 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2339 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2343 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2344 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2345 if (verbose & ~VERBOSE_GENERATION)
2346 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2348 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2349 (int)lum->lmm_layout_gen);
2353 if (verbose & VERBOSE_OFFSET) {
2354 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2355 if (verbose & ~VERBOSE_OFFSET)
2356 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2358 if (is_dir || skip_objs)
2359 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2360 lum->lmm_stripe_offset ==
2361 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2362 lum->lmm_stripe_offset);
2364 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2365 objects[0].l_ost_idx);
2366 if (!yaml && is_dir)
2372 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2373 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2374 if (verbose & ~VERBOSE_POOL)
2375 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2377 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2378 if (!yaml && is_dir)
2384 if (strlen(separator) != 0)
2385 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2388 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2389 struct lov_user_ost_data_v1 *objects,
2390 char *path, int obdindex, int depth,
2391 int header, enum lov_dump_flags flags)
2393 bool is_dir = flags & LDF_IS_DIR;
2394 bool indent = flags & LDF_INDENT;
2395 bool skip_objs = flags & LDF_SKIP_OBJS;
2396 bool yaml = flags & LDF_YAML;
2397 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2400 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2401 if (obdindex == objects[i].l_ost_idx) {
2411 lov_dump_user_lmm_header(lum, path, objects, header, depth, pool_name,
2414 if (!is_dir && !skip_objs && (header & VERBOSE_OBJID) &&
2415 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2416 char *space = " - ";
2419 llapi_printf(LLAPI_MSG_NORMAL,
2420 "%6slmm_objects:\n", " ");
2422 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2424 llapi_printf(LLAPI_MSG_NORMAL,
2425 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2427 for (i = 0; i < lum->lmm_stripe_count; i++) {
2428 int idx = objects[i].l_ost_idx;
2429 long long oid = ostid_id(&objects[i].l_ost_oi);
2430 long long gr = ostid_seq(&objects[i].l_ost_oi);
2432 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2436 struct lu_fid fid = { 0 };
2438 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2439 llapi_printf(LLAPI_MSG_NORMAL,
2440 "%sl_ost_idx: %d\n", space, idx);
2441 llapi_printf(LLAPI_MSG_NORMAL,
2442 "%8sl_fid: "DFID_NOBRACE"\n",
2444 } else if (indent) {
2445 struct lu_fid fid = { 0 };
2447 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2448 llapi_printf(LLAPI_MSG_NORMAL,
2449 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2450 space, i, idx, PFID(&fid));
2453 sprintf(fmt, "%s%s%s\n",
2454 "\t%6u\t%14llu\t%#13llx\t",
2455 (fid_seq_is_rsvd(gr) ||
2456 fid_seq_is_mdt0(gr)) ?
2457 "%14llu" : "%#14llx", "%s");
2458 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2460 obdindex == idx ? " *" : "");
2463 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2467 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2468 char *path, int obdindex, int depth, int verbose,
2469 enum lov_dump_flags flags)
2471 struct lmv_user_mds_data *objects = lum->lum_objects;
2472 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2473 int i, obdstripe = 0;
2474 char *separator = "";
2475 bool yaml = flags & LDF_YAML;
2477 if (obdindex != OBD_NOT_FOUND) {
2478 if (lum->lum_stripe_count == 0) {
2479 if (obdindex == lum->lum_stripe_offset)
2482 for (i = 0; i < lum->lum_stripe_count; i++) {
2483 if (obdindex == objects[i].lum_mds) {
2484 llapi_printf(LLAPI_MSG_NORMAL,
2499 /* show all information default */
2501 if (lum->lum_magic == LMV_USER_MAGIC)
2502 verbose = VERBOSE_POOL | VERBOSE_COUNT |
2503 VERBOSE_OFFSET | VERBOSE_HASH_TYPE;
2505 verbose = VERBOSE_OBJID;
2508 if (depth && path && ((verbose != VERBOSE_OBJID)))
2509 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2511 if (verbose & VERBOSE_COUNT) {
2512 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2513 if (verbose & ~VERBOSE_COUNT)
2514 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2515 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2516 (int)lum->lum_stripe_count);
2517 if ((verbose & VERBOSE_OFFSET) && !yaml)
2523 if (verbose & VERBOSE_OFFSET) {
2524 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2525 if (verbose & ~VERBOSE_OFFSET)
2526 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2527 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2528 (int)lum->lum_stripe_offset);
2529 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2535 if (verbose & VERBOSE_HASH_TYPE) {
2536 unsigned int type = lum->lum_hash_type;
2538 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2539 if (verbose & ~VERBOSE_HASH_TYPE)
2540 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2541 if (type < LMV_HASH_TYPE_MAX)
2542 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2543 mdt_hash_name[type]);
2545 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2550 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2551 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2552 if (obdstripe == 1 && lum->lum_stripe_count > 0)
2553 llapi_printf(LLAPI_MSG_NORMAL,
2554 "mdtidx\t\t FID[seq:oid:ver]\n");
2555 for (i = 0; i < lum->lum_stripe_count; i++) {
2556 int idx = objects[i].lum_mds;
2557 struct lu_fid *fid = &objects[i].lum_fid;
2558 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2559 llapi_printf(LLAPI_MSG_NORMAL,
2560 "%6u\t\t "DFID"\t\t%s\n",
2562 obdindex == idx ? " *" : "");
2567 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2568 pool_name[0] != '\0') {
2569 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2570 if (verbose & ~VERBOSE_POOL)
2571 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2573 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2577 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2578 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2581 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2582 enum lov_dump_flags flags)
2584 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2585 int depth = param->fp_max_depth;
2586 int verbose = param->fp_verbose;
2587 bool yaml = flags & LDF_YAML;
2589 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2590 !(flags & LDF_IS_DIR)) && !yaml)
2591 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2593 if (verbose & VERBOSE_DETAIL) {
2594 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2595 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2596 " ", comp_v1->lcm_magic);
2597 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2598 " ", comp_v1->lcm_size);
2599 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_flags: %u\n",
2600 " ", comp_v1->lcm_flags);
2603 if (verbose & VERBOSE_GENERATION) {
2604 if (verbose & ~VERBOSE_GENERATION)
2605 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2607 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2610 if (verbose & VERBOSE_COMP_COUNT) {
2611 if (verbose & ~VERBOSE_COMP_COUNT)
2612 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2614 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2615 comp_v1->lcm_entry_count);
2618 if (verbose & VERBOSE_DETAIL && !yaml)
2619 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2622 static void lov_dump_comp_v1_entry(struct find_param *param,
2623 enum lov_dump_flags flags, int index)
2625 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2626 struct lov_comp_md_entry_v1 *entry;
2627 char *separator = "";
2628 int verbose = param->fp_verbose;
2629 bool yaml = flags & LDF_YAML;
2631 entry = &comp_v1->lcm_entries[index];
2634 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2636 if (verbose & VERBOSE_COMP_ID) {
2637 if (verbose & VERBOSE_DETAIL && !yaml)
2638 llapi_printf(LLAPI_MSG_NORMAL,
2639 "%slcme_id: ", " - ");
2640 else if (verbose & ~VERBOSE_COMP_ID)
2641 llapi_printf(LLAPI_MSG_NORMAL,
2642 "%4slcme_id: ", " ");
2643 if (!(flags & LDF_IS_DIR))
2644 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2646 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2650 if (verbose & VERBOSE_COMP_FLAGS) {
2651 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2652 if (verbose & ~VERBOSE_COMP_FLAGS)
2653 llapi_printf(LLAPI_MSG_NORMAL,
2654 "%4slcme_flags: ", " ");
2655 llapi_printf(LLAPI_MSG_NORMAL, "%#x", entry->lcme_flags);
2659 if (verbose & VERBOSE_COMP_START) {
2660 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2661 if (verbose & ~VERBOSE_COMP_START)
2662 llapi_printf(LLAPI_MSG_NORMAL,
2663 "%4slcme_extent.e_start: ", " ");
2664 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2665 entry->lcme_extent.e_start);
2669 if (verbose & VERBOSE_COMP_END) {
2670 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2671 if (verbose & ~VERBOSE_COMP_END)
2672 llapi_printf(LLAPI_MSG_NORMAL,
2673 "%4slcme_extent.e_end: ", " ");
2674 if (entry->lcme_extent.e_end == LUSTRE_EOF)
2675 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
2677 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
2678 entry->lcme_extent.e_end);
2683 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2684 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2685 } else if (verbose & VERBOSE_DETAIL) {
2686 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2687 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
2688 " ", entry->lcme_offset);
2689 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
2690 " ", entry->lcme_size);
2691 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
2693 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2697 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2698 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2700 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2701 * The table below gives the answers for the specified parameters (value and
2702 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2703 * --------------------------------------
2704 * 1 | file > limit; sign > 0 | -1 / -1 |
2705 * 2 | file = limit; sign > 0 | -1 / -1 |
2706 * 3 | file < limit; sign > 0 | ? / 1 |
2707 * 4 | file > limit; sign = 0 | -1 / -1 |
2708 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2709 * 6 | file < limit; sign = 0 | ? / -1 |
2710 * 7 | file > limit; sign < 0 | 1 / 1 |
2711 * 8 | file = limit; sign < 0 | ? / -1 |
2712 * 9 | file < limit; sign < 0 | ? / -1 |
2713 * --------------------------------------
2714 * Note: 5th actually means that the value is within the interval
2715 * (limit - margin, limit]. */
2716 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2717 int sign, int negopt, unsigned long long margin,
2723 /* Drop the fraction of margin (of days). */
2724 if (file + margin <= limit)
2726 } else if (sign == 0) {
2727 if (file <= limit && file + margin > limit)
2729 else if (file + margin <= limit)
2731 } else if (sign < 0) {
2738 return negopt ? ~ret + 1 : ret;
2741 static inline struct lov_user_md *
2742 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
2744 return (struct lov_user_md *)((char *)comp_v1 +
2745 comp_v1->lcm_entries[ent_idx].lcme_offset);
2748 static inline struct lov_user_ost_data_v1 *
2749 lov_v1v3_objects(struct lov_user_md *v1)
2751 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
2752 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
2754 return v1->lmm_objects;
2758 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
2760 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
2761 strlcpy(pool_name, ((struct lov_user_md_v3 *)v1)->lmm_pool_name,
2764 pool_name[0] = '\0';
2768 print_last_init_comp(struct find_param *param)
2770 /* print all component info */
2771 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
2774 /* print specific component info */
2775 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
2776 param->fp_check_comp_start || param->fp_check_comp_end)
2782 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
2786 if (param->fp_comp_end == LUSTRE_EOF) {
2787 if (param->fp_comp_end_sign == 0) /* equal to EOF */
2788 match = end == LUSTRE_EOF ? 1 : -1;
2789 else if (param->fp_comp_end_sign > 0) /* at most EOF */
2790 match = end == LUSTRE_EOF ? -1 : 1;
2791 else /* at least EOF */
2793 if (param->fp_exclude_comp_end)
2796 unsigned long long margin;
2798 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
2799 match = find_value_cmp(end, param->fp_comp_end,
2800 param->fp_comp_end_sign,
2801 param->fp_exclude_comp_end, margin, 0);
2808 * An example of "getstripe -v" for a two components PFL file:
2811 * lcm_magic: 0x0BD60BD0
2815 * lcm_entry_count: 2
2819 * lcme_extent.e_start: 0
2820 * lcme_extent.e_end: 1048576
2824 * lmm_magic: 0x0BD10BD0
2825 * lmm_seq: 0x200000401
2826 * lmm_object_id: 0x1
2827 * lmm_fid: [0x200000401:0x1:0x0]
2828 * lmm_stripe_count: 1
2829 * lmm_stripe_size: 1048576
2832 * lmm_stripe_offset: 0
2834 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
2838 * lcme_extent.e_start: 1048576
2839 * lcme_extent.e_end: EOF
2843 * lmm_magic: 0x0BD10BD0
2844 * lmm_seq: 0x200000401
2845 * lmm_object_id: 0x1
2846 * lmm_fid: [0x200000401:0x1:0x0]
2847 * lmm_stripe_count: 2
2848 * lmm_stripe_size: 1048576
2851 * lmm_stripe_offset: 1
2853 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
2854 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
2856 static void lov_dump_comp_v1(struct find_param *param, char *path,
2857 enum lov_dump_flags flags)
2859 struct lov_comp_md_entry_v1 *entry;
2860 struct lov_user_ost_data_v1 *objects;
2861 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2862 struct lov_user_md_v1 *v1;
2863 char pool_name[LOV_MAXPOOLNAME + 1];
2864 int obdindex = param->fp_obd_index;
2865 int i, j, match, obdstripe = 0;
2867 if (obdindex != OBD_NOT_FOUND) {
2868 for (i = 0; !(flags & LDF_IS_DIR) &&
2869 i < comp_v1->lcm_entry_count; i++) {
2870 if (!(comp_v1->lcm_entries[i].lcme_flags &
2874 v1 = lov_comp_entry(comp_v1, i);
2875 objects = lov_v1v3_objects(v1);
2877 for (j = 0; j < v1->lmm_stripe_count; j++) {
2878 if (obdindex == objects[j].l_ost_idx) {
2891 lov_dump_comp_v1_header(param, path, flags);
2893 flags |= LDF_INDENT;
2895 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
2896 entry = &comp_v1->lcm_entries[i];
2898 if (param->fp_check_comp_flags) {
2899 if ((param->fp_exclude_comp_flags &&
2900 (param->fp_comp_flags & entry->lcme_flags)) ||
2901 (!param->fp_exclude_comp_flags &&
2902 !(param->fp_comp_flags & entry->lcme_flags)))
2906 if (param->fp_check_comp_id &&
2907 param->fp_comp_id != entry->lcme_id)
2910 if (param->fp_check_comp_start) {
2911 match = find_value_cmp(entry->lcme_extent.e_start,
2912 param->fp_comp_start,
2913 param->fp_comp_start_sign,
2915 param->fp_comp_start_units, 0);
2920 if (param->fp_check_comp_end) {
2921 match = find_comp_end_cmp(entry->lcme_extent.e_end,
2927 if (print_last_init_comp(param)) {
2929 * if part of stripe info is needed, we'd print only
2930 * the last instantiated component info.
2932 if (entry->lcme_flags & LCME_FL_INIT)
2938 if (entry->lcme_flags & LCME_FL_INIT)
2939 flags &= ~LDF_SKIP_OBJS;
2941 flags |= LDF_SKIP_OBJS;
2943 lov_dump_comp_v1_entry(param, flags, i);
2945 v1 = lov_comp_entry(comp_v1, i);
2946 objects = lov_v1v3_objects(v1);
2947 lov_v1v3_pool_name(v1, pool_name);
2949 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
2950 param->fp_max_depth, param->fp_verbose,
2953 if (print_last_init_comp(param)) {
2955 * directory layout contains only layout template, print the
2959 i = comp_v1->lcm_entry_count - 1;
2962 flags &= ~LDF_SKIP_OBJS;
2964 lov_dump_comp_v1_entry(param, flags, i);
2966 v1 = lov_comp_entry(comp_v1, i);
2967 objects = lov_v1v3_objects(v1);
2968 lov_v1v3_pool_name(v1, pool_name);
2970 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
2971 param->fp_max_depth, param->fp_verbose,
2976 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
2977 enum lov_dump_flags flags)
2981 if (param->fp_get_lmv || param->fp_get_default_lmv)
2982 magic = (__u32)param->fp_lmv_md->lum_magic;
2984 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
2987 flags |= LDF_IS_RAW;
2992 case LOV_USER_MAGIC_V1:
2993 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
2994 param->fp_lmd->lmd_lmm.lmm_objects,
2995 path, param->fp_obd_index,
2996 param->fp_max_depth, param->fp_verbose,
2999 case LOV_USER_MAGIC_V3: {
3000 char pool_name[LOV_MAXPOOLNAME + 1];
3001 struct lov_user_ost_data_v1 *objects;
3002 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3004 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
3005 objects = lmmv3->lmm_objects;
3006 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3007 objects, path, param->fp_obd_index,
3008 param->fp_max_depth, param->fp_verbose,
3013 case LMV_USER_MAGIC: {
3014 char pool_name[LOV_MAXPOOLNAME + 1];
3015 struct lmv_user_md *lum;
3017 lum = (struct lmv_user_md *)param->fp_lmv_md;
3018 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
3019 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3020 param->fp_max_depth, param->fp_verbose,
3024 case LOV_USER_MAGIC_COMP_V1:
3025 lov_dump_comp_v1(param, path, flags);
3028 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3029 "(expecting one of %#x %#x %#x %#x)\n",
3030 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3031 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3032 LMV_USER_MAGIC, LMV_MAGIC_V1);
3037 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3043 fname = strrchr(path, '/');
3045 /* It should be a file (or other non-directory) */
3046 if (fname == NULL) {
3047 dname = (char *)malloc(2);
3051 fname = (char *)path;
3053 dname = (char *)malloc(fname - path + 1);
3056 strncpy(dname, path, fname - path);
3057 dname[fname - path] = '\0';
3061 fd = open(dname, O_RDONLY | O_NONBLOCK);
3068 strcpy((char *)lum, fname);
3069 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3072 if (close(fd) == -1 && rc == 0)
3079 int llapi_file_lookup(int dirfd, const char *name)
3081 struct obd_ioctl_data data = { 0 };
3086 if (dirfd < 0 || name == NULL)
3089 data.ioc_version = OBD_IOCTL_VERSION;
3090 data.ioc_len = sizeof(data);
3091 data.ioc_inlbuf1 = (char *)name;
3092 data.ioc_inllen1 = strlen(name) + 1;
3094 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
3096 llapi_error(LLAPI_MSG_ERROR, rc,
3097 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3102 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3108 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3109 * Return -1 or 1 if file timestamp does not or does match the given criteria
3110 * correspondingly. Return 0 if the MDS time is being checked and there are
3111 * attributes on OSTs and it is not yet clear if the timespamp matches.
3113 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3114 * updated timestamps. */
3115 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3120 /* Check if file is accepted. */
3121 if (param->fp_atime) {
3122 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3123 param->fp_asign, param->fp_exclude_atime,
3130 if (param->fp_mtime) {
3131 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3132 param->fp_msign, param->fp_exclude_mtime,
3137 /* If the previous check matches, but this one is not yet clear,
3138 * we should return 0 to do an RPC on OSTs. */
3143 if (param->fp_ctime) {
3144 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3145 param->fp_csign, param->fp_exclude_ctime,
3150 /* If the previous check matches, but this one is not yet clear,
3151 * we should return 0 to do an RPC on OSTs. */
3160 * Check whether the stripes matches the indexes user provided
3164 static int check_obd_match(struct find_param *param)
3166 struct lov_user_ost_data_v1 *objects;
3167 struct lov_comp_md_v1 *comp_v1 = NULL;
3168 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3169 lstat_t *st = ¶m->fp_lmd->lmd_st;
3170 int i, j, k, count = 1;
3172 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3175 if (!S_ISREG(st->st_mode))
3178 /* Only those files should be accepted, which have a
3179 * stripe on the specified OST. */
3180 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3181 comp_v1 = (struct lov_comp_md_v1 *)v1;
3182 count = comp_v1->lcm_entry_count;
3185 for (i = 0; i < count; i++) {
3187 v1 = lov_comp_entry(comp_v1, i);
3189 objects = lov_v1v3_objects(v1);
3191 for (j = 0; j < v1->lmm_stripe_count; j++) {
3192 for (k = 0; k < param->fp_num_obds; k++) {
3193 if (param->fp_obd_indexes[k] ==
3194 objects[j].l_ost_idx)
3195 return !param->fp_exclude_obd;
3200 return param->fp_exclude_obd;
3203 static int check_mdt_match(struct find_param *param)
3207 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3210 /* FIXME: For striped dir, we should get stripe information and check */
3211 for (i = 0; i < param->fp_num_mdts; i++) {
3212 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3213 return !param->fp_exclude_mdt;
3216 if (param->fp_exclude_mdt)
3223 * Check whether the obd is active or not, if it is
3224 * not active, just print the object affected by this
3227 static int print_failed_tgt(struct find_param *param, char *path, int type)
3229 struct obd_statfs stat_buf;
3230 struct obd_uuid uuid_buf;
3233 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3236 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3237 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3238 ret = llapi_obd_statfs(path, type,
3239 param->fp_obd_index, &stat_buf,
3242 llapi_printf(LLAPI_MSG_NORMAL,
3243 "obd_uuid: %s failed %s ",
3244 param->fp_obd_uuid->uuid,
3251 static int find_check_stripe_size(struct find_param *param)
3253 struct lov_comp_md_v1 *comp_v1 = NULL;
3254 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3255 int ret, i, count = 1;
3257 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3258 comp_v1 = (struct lov_comp_md_v1 *)v1;
3259 count = comp_v1->lcm_entry_count;
3260 ret = param->fp_exclude_stripe_size ? 1 : -1;
3263 for (i = 0; i < count; i++) {
3265 v1 = lov_comp_entry(comp_v1, i);
3267 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3268 param->fp_stripe_size_sign,
3269 param->fp_exclude_stripe_size,
3270 param->fp_stripe_size_units, 0);
3271 /* If any stripe_size matches */
3279 static __u32 find_get_stripe_count(struct find_param *param)
3281 struct lov_comp_md_v1 *comp_v1 = NULL;
3282 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3284 __u32 stripe_count = 0;
3286 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3287 comp_v1 = (struct lov_comp_md_v1 *)v1;
3288 count = comp_v1->lcm_entry_count;
3291 for (i = 0; i < count; i++) {
3293 v1 = lov_comp_entry(comp_v1, i);
3294 stripe_count += v1->lmm_stripe_count;
3297 return stripe_count;
3300 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3302 static int find_check_layout(struct find_param *param)
3304 struct lov_comp_md_v1 *comp_v1 = NULL;
3305 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3307 bool found = false, valid = false;
3309 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3310 comp_v1 = (struct lov_comp_md_v1 *)v1;
3311 count = comp_v1->lcm_entry_count;
3314 for (i = 0; i < count; i++) {
3316 v1 = lov_comp_entry(comp_v1, i);
3318 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3322 if (v1->lmm_pattern & param->fp_layout) {
3331 if ((found && !param->fp_exclude_layout) ||
3332 (!found && param->fp_exclude_layout))
3338 static int find_check_pool(struct find_param *param)
3340 struct lov_comp_md_v1 *comp_v1 = NULL;
3341 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3342 struct lov_user_md_v3 *v3 = (void *)v1;
3346 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3347 comp_v1 = (struct lov_comp_md_v1 *)v1;
3348 count = comp_v1->lcm_entry_count;
3349 /* empty requested pool is taken as no pool search */
3350 if (count == 0 && param->fp_poolname[0] == '\0')
3354 for (i = 0; i < count; i++) {
3355 if (comp_v1 != NULL)
3356 v1 = lov_comp_entry(comp_v1, i);
3358 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3359 (param->fp_poolname[0] == '\0')) ||
3360 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3361 (strncmp(v3->lmm_pool_name,
3362 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3363 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3364 (strcmp(param->fp_poolname, "*") == 0))) {
3370 if ((found && !param->fp_exclude_pool) ||
3371 (!found && param->fp_exclude_pool))
3377 static int find_check_comp_options(struct find_param *param)
3379 struct lov_comp_md_v1 *comp_v1;
3380 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3381 struct lov_comp_md_entry_v1 *entry;
3384 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1) {
3385 if ((param->fp_check_comp_count &&
3386 !param->fp_exclude_comp_count) ||
3387 (param->fp_check_comp_flags &&
3388 !param->fp_exclude_comp_flags) ||
3389 (param->fp_check_comp_start &&
3390 !param->fp_exclude_comp_start) ||
3391 (param->fp_check_comp_end &&
3392 !param->fp_exclude_comp_end))
3398 comp_v1 = (struct lov_comp_md_v1 *)v1;
3400 if (param->fp_check_comp_count) {
3401 ret = find_value_cmp(comp_v1->lcm_entry_count,
3402 param->fp_comp_count,
3403 param->fp_comp_count_sign,
3404 param->fp_exclude_comp_count, 1, 0);
3409 if (comp_v1->lcm_entry_count == 0) {
3410 if ((param->fp_check_comp_flags &&
3411 !param->fp_exclude_comp_flags) ||
3412 (param->fp_check_comp_start &&
3413 !param->fp_exclude_comp_start) ||
3414 (param->fp_check_comp_end &&
3415 !param->fp_exclude_comp_end))
3419 if (param->fp_check_comp_flags) {
3420 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3421 entry = &comp_v1->lcm_entries[i];
3423 if (((entry->lcme_flags & param->fp_comp_flags) &&
3424 param->fp_exclude_comp_flags) ||
3425 (!(entry->lcme_flags & param->fp_comp_flags) &&
3426 !param->fp_exclude_comp_flags))
3430 /* If any flags matches */
3438 if (param->fp_check_comp_start) {
3439 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3440 entry = &comp_v1->lcm_entries[i];
3442 ret = find_value_cmp(entry->lcme_extent.e_start,
3443 param->fp_comp_start,
3444 param->fp_comp_start_sign,
3445 param->fp_exclude_comp_start,
3446 param->fp_comp_start_units, 0);
3447 /* If any extent start matches */
3455 if (param->fp_check_comp_end) {
3456 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3457 entry = &comp_v1->lcm_entries[i];
3459 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3461 /* If any extent end matches */
3472 static bool find_check_lmm_info(struct find_param *param)
3474 return param->fp_check_pool || param->fp_check_stripe_count ||
3475 param->fp_check_stripe_size || param->fp_check_layout ||
3476 param->fp_check_comp_count || param->fp_check_comp_end ||
3477 param->fp_check_comp_start || param->fp_check_comp_flags ||
3478 param->fp_check_projid;
3482 * Get file/directory project id.
3483 * by the open fd resides on.
3484 * Return 0 and project id on success, or -ve errno.
3486 static int fget_projid(int fd, int *projid)
3491 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
3495 *projid = fsx.fsx_projid;
3499 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
3500 void *data, struct dirent64 *de)
3502 struct find_param *param = (struct find_param *)data;
3503 DIR *dir = dirp == NULL ? NULL : *dirp;
3504 int decision = 1; /* 1 is accepted; -1 is rejected. */
3505 lstat_t *st = ¶m->fp_lmd->lmd_st;
3507 int checked_type = 0;
3509 __u32 stripe_count = 0;
3512 if (parent == NULL && dir == NULL)
3515 /* If a regular expression is presented, make the initial decision */
3516 if (param->fp_pattern != NULL) {
3517 char *fname = strrchr(path, '/');
3518 fname = (fname == NULL ? path : fname + 1);
3519 ret = fnmatch(param->fp_pattern, fname, 0);
3520 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3521 (ret == 0 && param->fp_exclude_pattern))
3525 /* See if we can check the file type from the dirent. */
3526 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3529 if (DTTOIF(de->d_type) == param->fp_type) {
3530 if (param->fp_exclude_type)
3533 if (!param->fp_exclude_type)
3540 /* Request MDS for the stat info if some of these parameters need
3541 * to be compared. */
3542 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3543 param->fp_check_uid || param->fp_check_gid ||
3544 param->fp_atime || param->fp_mtime || param->fp_ctime ||
3545 param->fp_check_size || find_check_lmm_info(param) ||
3546 param->fp_check_mdt_count || param->fp_check_hash_type)
3549 if (param->fp_type != 0 && checked_type == 0)
3552 if (decision == 0) {
3553 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
3554 param->fp_get_lmv = 1;
3555 ret = cb_get_dirstripe(path, dir, param);
3560 param->fp_lmd->lmd_lmm.lmm_magic = 0;
3561 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
3562 param->fp_lum_size);
3563 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
3564 find_check_lmm_info(param)) {
3565 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
3567 /* We need to "fake" the "use the default" values
3568 * since the lmm struct is zeroed out at this point. */
3569 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3570 lmm->lmm_pattern = 0xFFFFFFFF;
3572 ostid_set_seq(&lmm->lmm_oi,
3573 FID_SEQ_LOV_DEFAULT);
3574 lmm->lmm_stripe_size = 0;
3575 lmm->lmm_stripe_count = 0;
3576 lmm->lmm_stripe_offset = -1;
3578 if (ret == 0 && param->fp_mdt_uuid != NULL) {
3580 ret = llapi_file_fget_mdtidx(dirfd(dir),
3581 ¶m->fp_file_mdt_index);
3582 } else if (S_ISREG(st->st_mode)) {
3583 /* FIXME: we could get the MDT index from the
3584 * file's FID in lmd->lmd_lmm.lmm_oi without
3585 * opening the file, once we are sure that
3586 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
3587 * That would still be an ioctl() to map the
3588 * FID to the MDT, but not an open RPC. */
3589 fd = open(path, O_RDONLY);
3591 ret = llapi_file_fget_mdtidx(fd,
3592 ¶m->fp_file_mdt_index);
3597 /* For a special file, we assume it resides on
3598 * the same MDT as the parent directory. */
3599 ret = llapi_file_fget_mdtidx(dirfd(parent),
3600 ¶m->fp_file_mdt_index);
3611 stripe_count = find_get_stripe_count(param);
3615 if (param->fp_type && !checked_type) {
3616 if ((st->st_mode & S_IFMT) == param->fp_type) {
3617 if (param->fp_exclude_type)
3620 if (!param->fp_exclude_type)
3626 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
3627 if (lustre_fs && param->fp_got_uuids &&
3628 param->fp_dev != st->st_dev) {
3629 /* A lustre/lustre mount point is crossed. */
3630 param->fp_got_uuids = 0;
3631 param->fp_obds_printed = 0;
3632 param->fp_mdt_index = OBD_NOT_FOUND;
3633 param->fp_obd_index = OBD_NOT_FOUND;
3636 if (lustre_fs && !param->fp_got_uuids) {
3637 ret = setup_target_indexes(dir ? dir : parent, path,
3642 param->fp_dev = st->st_dev;
3643 } else if (!lustre_fs && param->fp_got_uuids) {
3644 /* A lustre/non-lustre mount point is crossed. */
3645 param->fp_got_uuids = 0;
3646 param->fp_mdt_index = OBD_NOT_FOUND;
3647 param->fp_obd_index = OBD_NOT_FOUND;
3651 if (param->fp_check_stripe_size) {
3652 decision = find_check_stripe_size(param);
3657 if (param->fp_check_stripe_count) {
3658 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
3659 param->fp_stripe_count_sign,
3660 param->fp_exclude_stripe_count, 1, 0);
3665 if (param->fp_check_mdt_count) {
3666 decision = find_value_cmp(
3667 param->fp_lmv_md->lum_stripe_count,
3668 param->fp_mdt_count,
3669 param->fp_mdt_count_sign,
3670 param->fp_exclude_mdt_count, 1, 0);
3675 if (param->fp_check_layout) {
3676 decision = find_check_layout(param);
3681 if (param->fp_check_hash_type) {
3684 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
3685 if ((found && param->fp_exclude_hash_type) ||
3686 (!found && !param->fp_exclude_hash_type)) {
3692 /* If an OBD UUID is specified but none matches, skip this file. */
3693 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
3694 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
3697 /* If an OST or MDT UUID is given, and some OST matches,
3699 if (param->fp_obd_index != OBD_NOT_FOUND ||
3700 param->fp_mdt_index != OBD_NOT_FOUND) {
3701 if (param->fp_obd_uuid) {
3702 if (check_obd_match(param)) {
3703 /* If no mdtuuid is given, we are done.
3704 * Otherwise, fall through to the mdtuuid
3706 if (!param->fp_mdt_uuid)
3713 if (param->fp_mdt_uuid) {
3714 if (check_mdt_match(param))
3721 if (param->fp_check_uid) {
3722 if (st->st_uid == param->fp_uid) {
3723 if (param->fp_exclude_uid)
3726 if (!param->fp_exclude_uid)
3731 if (param->fp_check_gid) {
3732 if (st->st_gid == param->fp_gid) {
3733 if (param->fp_exclude_gid)
3736 if (!param->fp_exclude_gid)
3741 if (param->fp_check_projid) {
3745 fd = open(path, O_RDONLY);
3748 ret = fget_projid(fd, &projid);
3753 if (projid == param->fp_projid) {
3754 if (param->fp_exclude_uid)
3757 if (!param->fp_exclude_projid)
3762 if (param->fp_check_pool) {
3763 decision = find_check_pool(param);
3768 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
3769 param->fp_check_comp_start || param->fp_check_comp_end) {
3770 decision = find_check_comp_options(param);
3775 /* Check the time on mds. */
3777 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
3780 for_mds = lustre_fs ?
3781 (S_ISREG(st->st_mode) && stripe_count) : 0;
3782 decision = find_time_check(st, param, for_mds);
3787 /* If file still fits the request, ask ost for updated info.
3788 The regular stat is almost of the same speed as some new
3789 'glimpse-size-ioctl'. */
3791 if (param->fp_check_size && S_ISREG(st->st_mode) && stripe_count)
3794 if (param->fp_check_size && S_ISDIR(st->st_mode))
3798 /* For regular files with the stripe the decision may have not
3799 * been taken yet if *time or size is to be checked. */
3800 if (param->fp_obd_index != OBD_NOT_FOUND)
3801 print_failed_tgt(param, path, LL_STATFS_LOV);
3803 if (param->fp_mdt_index != OBD_NOT_FOUND)
3804 print_failed_tgt(param, path, LL_STATFS_LMV);
3807 ret = fstat_f(dirfd(dir), st);
3808 else if (de != NULL)
3809 ret = fstatat_f(dirfd(parent), de->d_name, st,
3810 AT_SYMLINK_NOFOLLOW);
3812 ret = lstat_f(path, st);
3815 if (errno == ENOENT) {
3816 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
3817 "warning: %s: %s does not exist",
3822 llapi_error(LLAPI_MSG_ERROR, ret,
3823 "%s: IOC_LOV_GETINFO on %s failed",
3829 /* Check the time on osc. */
3830 decision = find_time_check(st, param, 0);
3835 if (param->fp_check_size)
3836 decision = find_value_cmp(st->st_size, param->fp_size,
3837 param->fp_size_sign,
3838 param->fp_exclude_size,
3839 param->fp_size_units, 0);
3841 if (decision != -1) {
3842 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
3843 if (param->fp_zero_end)
3844 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
3846 llapi_printf(LLAPI_MSG_NORMAL, "\n");
3851 /* Do not get down anymore? */
3852 if (param->fp_depth == param->fp_max_depth) {
3863 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
3864 void *param_data, struct dirent64 *de)
3866 struct find_param *param = (struct find_param *)param_data;
3867 DIR *tmp_parent = parent;
3868 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3870 struct obd_ioctl_data data = { 0 };
3877 if (parent == NULL && dirp == NULL)
3883 if (parent == NULL) {
3884 tmp_parent = opendir_parent(path);
3885 if (tmp_parent == NULL) {
3888 llapi_error(LLAPI_MSG_ERROR, ret,
3889 "can not open %s", path);
3894 fd = dirfd(tmp_parent);
3896 path_copy = strdup(path);
3897 filename = basename(path_copy);
3898 data.ioc_inlbuf1 = (char *)filename;
3899 data.ioc_inllen1 = strlen(filename) + 1;
3900 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
3901 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
3902 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3904 llapi_error(LLAPI_MSG_ERROR, ret,
3905 "llapi_obd_statfs: error packing ioctl data");
3910 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
3912 if (errno == EBUSY && !retry) {
3913 /* because migrate may not be able to lock all involved
3914 * objects in order, for some of them it try lock, while
3915 * there may be conflicting COS locks and cause migrate
3916 * fail with EBUSY, hope a sync() could cause
3917 * transaction commit and release these COS locks. */
3923 fprintf(stderr, "%s migrate failed: %s (%d)\n",
3924 path, strerror(-ret), ret);
3926 } else if (param->fp_verbose & VERBOSE_DETAIL) {
3927 fprintf(stdout, "migrate %s to MDT%d\n",
3928 path, param->fp_mdt_index);
3933 /* If the directory is being migration, we need
3934 * close the directory after migration,
3935 * so the old directory cache will be cleanup
3936 * on the client side, and re-open to get the
3937 * new directory handle */
3938 *dirp = opendir(path);
3939 if (*dirp == NULL) {
3941 llapi_error(LLAPI_MSG_ERROR, ret,
3942 "%s: Failed to open '%s'", __func__, path);
3947 closedir(tmp_parent);
3954 int llapi_migrate_mdt(char *path, struct find_param *param)
3956 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
3959 int llapi_mv(char *path, struct find_param *param)
3961 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
3962 static bool printed;
3965 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
3966 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
3970 return llapi_migrate_mdt(path, param);
3973 int llapi_find(char *path, struct find_param *param)
3975 return param_callback(path, cb_find_init, cb_common_fini, param);
3979 * Get MDT number that the file/directory inode referenced
3980 * by the open fd resides on.
3981 * Return 0 and mdtidx on success, or -ve errno.
3983 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
3985 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
3990 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
3991 struct dirent64 *de)
3993 struct find_param *param = (struct find_param *)data;
3994 DIR *d = dirp == NULL ? NULL : *dirp;
3998 if (parent == NULL && d == NULL)
4002 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4003 } else /* if (parent) */ {
4006 fd = open(path, O_RDONLY | O_NOCTTY);
4008 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4016 if (ret == -ENODATA) {
4017 if (!param->fp_obd_uuid)
4018 llapi_printf(LLAPI_MSG_NORMAL,
4019 "'%s' has no stripe info\n", path);
4021 } else if (ret == -ENOENT) {
4022 llapi_error(LLAPI_MSG_WARN, ret,
4023 "warning: %s: '%s' does not exist",
4026 } else if (ret == -ENOTTY) {
4027 llapi_error(LLAPI_MSG_ERROR, ret,
4028 "%s: '%s' not on a Lustre fs",
4031 llapi_error(LLAPI_MSG_ERROR, ret,
4032 "error: %s: '%s' failed get_mdtidx",
4038 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4039 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4041 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4045 /* Do not go down anymore? */
4046 if (param->fp_depth == param->fp_max_depth)
4054 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4055 struct dirent64 *de)
4057 struct find_param *param = (struct find_param *)data;
4058 DIR *d = dirp == NULL ? NULL : *dirp;
4061 if (parent == NULL && d == NULL)
4064 if (param->fp_obd_uuid) {
4065 param->fp_quiet = 1;
4066 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4072 if (param->fp_get_lmv || param->fp_get_default_lmv) {
4073 ret = cb_get_dirstripe(path, d, param);
4075 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
4076 (void *)¶m->fp_lmd->lmd_lmm);
4079 } else if (parent && !param->fp_get_lmv && !param->fp_get_default_lmv) {
4080 char *fname = strrchr(path, '/');
4081 fname = (fname == NULL ? path : fname + 1);
4083 strlcpy((char *)¶m->fp_lmd->lmd_lmm, fname,
4084 param->fp_lum_size);
4086 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
4087 (void *)¶m->fp_lmd->lmd_lmm);
4093 if (errno == ENODATA && d != NULL) {
4094 /* We need to "fake" the "use the default" values
4095 * since the lmm struct is zeroed out at this point.
4096 * The magic needs to be set in order to satisfy
4097 * a check later on in the code path.
4098 * The object_seq needs to be set for the "(Default)"
4099 * prefix to be displayed. */
4100 if (param->fp_get_default_lmv) {
4101 struct lmv_user_md *lum = param->fp_lmv_md;
4103 lum->lum_magic = LMV_USER_MAGIC;
4104 lum->lum_stripe_count = 0;
4105 lum->lum_stripe_offset = -1;
4107 } else if (param->fp_get_lmv) {
4108 struct lmv_user_md *lum = param->fp_lmv_md;
4111 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4114 lum->lum_magic = LMV_MAGIC_V1;
4115 lum->lum_stripe_count = 0;
4116 lum->lum_stripe_offset = mdtidx;
4119 struct lov_user_md *lmm =
4120 ¶m->fp_lmd->lmd_lmm;
4122 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4124 ostid_set_seq(&lmm->lmm_oi,
4125 FID_SEQ_LOV_DEFAULT);
4126 lmm->lmm_stripe_count = 0;
4127 lmm->lmm_stripe_size = 0;
4128 lmm->lmm_stripe_offset = -1;
4131 } else if (errno == ENODATA && parent != NULL) {
4132 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4133 llapi_printf(LLAPI_MSG_NORMAL,
4134 "%s has no stripe info\n", path);
4136 } else if (errno == ENOENT) {
4137 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4138 "warning: %s: %s does not exist",
4141 } else if (errno == ENOTTY) {
4143 llapi_error(LLAPI_MSG_ERROR, ret,
4144 "%s: '%s' not on a Lustre fs?",
4149 llapi_error(LLAPI_MSG_ERROR, ret,
4150 "error: %s: %s failed for %s",
4151 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4152 "IOC_MDC_GETFILESTRIPE", path);
4159 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4160 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4163 /* Do not get down anymore? */
4164 if (param->fp_depth == param->fp_max_depth)
4172 int llapi_getstripe(char *path, struct find_param *param)
4174 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4175 cb_get_mdt_index : cb_getstripe,
4176 cb_common_fini, param);
4179 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4180 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4182 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
4184 struct obd_ioctl_data data = { 0 };
4187 data.ioc_inlbuf1 = (char *)&type;
4188 data.ioc_inllen1 = sizeof(__u32);
4189 data.ioc_inlbuf2 = (char *)&index;
4190 data.ioc_inllen2 = sizeof(__u32);
4191 data.ioc_pbuf1 = (char *)stat_buf;
4192 data.ioc_plen1 = sizeof(struct obd_statfs);
4193 data.ioc_pbuf2 = (char *)uuid_buf;
4194 data.ioc_plen2 = sizeof(struct obd_uuid);
4196 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
4198 llapi_error(LLAPI_MSG_ERROR, rc,
4199 "llapi_obd_statfs: error packing ioctl data");
4203 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4205 return rc < 0 ? -errno : 0;
4208 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4209 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4214 fd = open(path, O_RDONLY);
4217 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4219 /* If we can't even open a file on the filesystem (e.g. with
4220 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4224 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4231 #define MAX_STRING_SIZE 128
4233 int llapi_ping(char *obd_type, char *obd_name)
4239 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4240 obd_type, obd_name);
4244 fd = open(path.gl_pathv[0], O_WRONLY);
4247 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4252 /* The purpose is to send a byte as a ping, whatever this byte is. */
4253 /* coverity[uninit_use_in_call] */
4254 rc = write(fd, buf, 1);
4262 cfs_free_param_data(&path);
4266 int llapi_target_iterate(int type_num, char **obd_type,
4267 void *args, llapi_cb_t cb)
4269 char buf[MAX_STRING_SIZE];
4274 rc = cfs_get_param_paths(¶m, "devices");
4278 fp = fopen(param.gl_pathv[0], "r");
4281 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4286 while (fgets(buf, sizeof(buf), fp) != NULL) {
4287 char *obd_type_name = NULL;
4288 char *obd_name = NULL;
4289 char *obd_uuid = NULL;
4291 struct obd_statfs osfs_buffer;
4293 while(bufp[0] == ' ')
4296 for(i = 0; i < 3; i++) {
4297 obd_type_name = strsep(&bufp, " ");
4299 obd_name = strsep(&bufp, " ");
4300 obd_uuid = strsep(&bufp, " ");
4302 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4304 for (i = 0; i < type_num; i++) {
4305 if (strcmp(obd_type_name, obd_type[i]) != 0)
4308 cb(obd_type_name, obd_name, obd_uuid, args);
4313 cfs_free_param_data(¶m);
4317 static void do_target_check(char *obd_type_name, char *obd_name,
4318 char *obd_uuid, void *args)
4322 rc = llapi_ping(obd_type_name, obd_name);
4323 if (rc == ENOTCONN) {
4324 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4326 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4328 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4332 int llapi_target_check(int type_num, char **obd_type, char *dir)
4334 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4337 #undef MAX_STRING_SIZE
4339 /* Is this a lustre fs? */
4340 int llapi_is_lustre_mnttype(const char *type)
4342 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4345 /* Is this a lustre client fs? */
4346 int llapi_is_lustre_mnt(struct mntent *mnt)
4348 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4349 strstr(mnt->mnt_fsname, ":/") != NULL);
4352 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4354 char fsname[PATH_MAX + 1];
4358 rc = llapi_search_fsname(mnt, fsname);
4360 llapi_err_noerrno(LLAPI_MSG_ERROR,
4361 "'%s' isn't on Lustre filesystem", mnt);
4365 root = open(mnt, O_RDONLY | O_DIRECTORY);
4368 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4372 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4380 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4381 * format must have %s%s, buf must be > 16
4382 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4383 * then buf = "lustre-MDT0000"
4385 static int get_mdtname(char *name, char *format, char *buf)
4387 char suffix[]="-MDT0000";
4388 int len = strlen(name);
4390 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4391 name[len - 5] = '\0';
4396 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4399 /* Not enough room to add suffix */
4400 llapi_err_noerrno(LLAPI_MSG_ERROR,
4401 "MDT name too long |%s|", name);
4406 return sprintf(buf, format, name, suffix);
4409 /** ioctl on filsystem root, with mdtindex sent as data
4410 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4411 * \param mdtidxp pointer to integer within data to be filled in with the
4412 * mdt index (0 if no mdt is specified). NULL won't be filled.
4414 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4422 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4423 Open root and parse mdt index. */
4424 if (mdtname[0] == '/') {
4426 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4427 (char *)mdtname, -1);
4429 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4431 ptr = fsname + strlen(fsname) - 8;
4433 index = strtol(ptr + 4, NULL, 10);
4434 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4438 llapi_err_noerrno(LLAPI_MSG_ERROR,
4439 "Can't open %s: %d\n", mdtname, rc);
4446 rc = ioctl(fd, opc, data);
4455 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4456 int buflen, long long *recno, int *linkno)
4458 const char *fidstr_orig = fidstr;
4460 struct getinfo_fid2path *gf;
4463 while (*fidstr == '[')
4466 sscanf(fidstr, SFID, RFID(&fid));
4467 if (!fid_is_sane(&fid)) {
4468 llapi_err_noerrno(LLAPI_MSG_ERROR,
4469 "bad FID format '%s', should be [seq:oid:ver]"
4470 " (e.g. "DFID")\n", fidstr_orig,
4471 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4475 gf = malloc(sizeof(*gf) + buflen);
4480 gf->gf_recno = *recno;
4481 gf->gf_linkno = *linkno;
4482 gf->gf_pathlen = buflen;
4484 /* Take path or fsname */
4485 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4489 memcpy(buf, gf->gf_u.gf_path, gf->gf_pathlen);
4490 if (buf[0] == '\0') { /* ROOT path */
4494 *recno = gf->gf_recno;
4495 *linkno = gf->gf_linkno;
4502 static int fid_from_lma(const char *path, const int fd, lustre_fid *fid)
4505 struct lustre_mdt_attrs *lma;
4509 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4511 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4514 lma = (struct lustre_mdt_attrs *)buf;
4515 fid_le_to_cpu(fid, &lma->lma_self_fid);
4519 int llapi_get_mdt_index_by_fid(int fd, const lustre_fid *fid,
4524 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4533 int llapi_fd2fid(const int fd, lustre_fid *fid)
4537 memset(fid, 0, sizeof(*fid));
4539 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4540 if (rc == -EINVAL || rc == -ENOTTY)
4541 rc = fid_from_lma(NULL, fd, fid);
4546 int llapi_path2fid(const char *path, lustre_fid *fid)
4550 memset(fid, 0, sizeof(*fid));
4551 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4553 if (errno == ELOOP || errno == ENXIO)
4554 return fid_from_lma(path, -1, fid);
4558 rc = llapi_fd2fid(fd, fid);
4559 if (rc == -EINVAL || rc == -ENOTTY)
4560 rc = fid_from_lma(path, -1, fid);
4566 int llapi_fd2parent(int fd, unsigned int linkno, lustre_fid *parent_fid,
4567 char *name, size_t name_size)
4569 struct getparent *gp;
4572 gp = malloc(sizeof(*gp) + name_size);
4576 gp->gp_linkno = linkno;
4577 gp->gp_name_size = name_size;
4579 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4585 *parent_fid = gp->gp_fid;
4587 strncpy(name, gp->gp_name, name_size);
4588 name[name_size - 1] = '\0';
4595 int llapi_path2parent(const char *path, unsigned int linkno,
4596 lustre_fid *parent_fid, char *name, size_t name_size)
4601 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4605 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4610 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4615 root = open(mnt, O_RDONLY | O_DIRECTORY);
4618 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4622 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
4625 llapi_error(LLAPI_MSG_ERROR, rc,
4626 "ioctl on %s for getting connect flags failed", mnt);
4633 * Get a 64-bit value representing the version of file data pointed by fd.
4635 * Each write or truncate, flushed on OST, will change this value. You can use
4636 * this value to verify if file data was modified. This only checks the file
4637 * data, not metadata.
4639 * \param flags 0: no flush pages, usually used it the process has already
4641 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4643 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4644 * pages from clients.
4646 * \retval 0 on success.
4647 * \retval -errno on error.
4649 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4652 struct ioc_data_version idv;
4654 idv.idv_flags = flags;
4656 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4660 *data_version = idv.idv_version;
4666 * Create a file without any name open it for read/write
4668 * - file is created as if it were a standard file in the given \a directory
4669 * - file does not appear in \a directory and mtime does not change because
4670 * the filename is handled specially by the Lustre MDS.
4671 * - file is removed at final close
4672 * - file modes are rw------- since it doesn't make sense to have a read-only
4673 * or write-only file that cannot be opened again.
4674 * - if user wants another mode it must use fchmod() on the open file, no
4675 * security problems arise because it cannot be opened by another process.
4677 * \param[in] directory directory from which to inherit layout/MDT idx
4678 * \param[in] idx MDT index on which the file is created,
4679 * \a idx == -1 means no specific MDT is requested
4680 * \param[in] open_flags standard open(2) flags
4682 * \retval 0 on success.
4683 * \retval -errno on error.
4685 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
4687 char file_path[PATH_MAX];
4688 char filename[PATH_MAX];
4689 int saved_errno = errno;
4697 snprintf(filename, sizeof(filename),
4698 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
4700 snprintf(filename, sizeof(filename),
4701 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
4703 rc = snprintf(file_path, sizeof(file_path),
4704 "%s/%s", directory, filename);
4705 if (rc >= sizeof(file_path))
4708 fd = open(file_path,
4709 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
4711 } while (fd < 0 && errno == EEXIST);
4714 llapi_error(LLAPI_MSG_ERROR, errno,
4715 "Cannot create volatile file '%s' in '%s'",
4716 filename + LUSTRE_VOLATILE_HDR_LEN,
4721 /* Unlink file in case this wasn't a Lustre filesystem and the
4722 * magic volatile filename wasn't handled as intended. The
4723 * effect is the same. If volatile open was supported then we
4724 * expect unlink() to return -ENOENT. */
4725 (void)unlink(file_path);
4727 /* Since we are returning successfully we restore errno (and
4728 * mask out possible EEXIST from open() and ENOENT from
4730 errno = saved_errno;
4736 * Swap the layouts between 2 file descriptors
4737 * the 2 files must be open for writing
4738 * first fd received the ioctl, second fd is passed as arg
4739 * this is assymetric but avoid use of root path for ioctl
4741 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
4742 int gid, __u64 flags)
4744 struct lustre_swap_layouts lsl;
4749 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
4750 rc = fstat(fd1, &st1);
4754 rc = fstat(fd2, &st2);
4759 lsl.sl_flags = flags;
4763 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
4767 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
4768 struct timeval tv1[2];
4769 struct timeval tv2[2];
4771 memset(tv1, 0, sizeof(tv1));
4772 memset(tv2, 0, sizeof(tv2));
4774 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
4775 tv1[0].tv_sec = st1.st_atime;
4776 tv2[0].tv_sec = st2.st_atime;
4778 tv1[0].tv_sec = st2.st_atime;
4779 tv2[0].tv_sec = st1.st_atime;
4782 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
4783 tv1[1].tv_sec = st1.st_mtime;
4784 tv2[1].tv_sec = st2.st_mtime;
4786 tv1[1].tv_sec = st2.st_mtime;
4787 tv2[1].tv_sec = st1.st_mtime;
4790 rc = futimes(fd1, tv1);
4794 rc = futimes(fd2, tv2);
4802 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
4809 while (grp_id == 0);
4811 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
4819 * Swap the layouts between 2 files
4820 * the 2 files are open in write
4822 int llapi_swap_layouts(const char *path1, const char *path2,
4823 __u64 dv1, __u64 dv2, __u64 flags)
4827 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
4830 llapi_error(LLAPI_MSG_ERROR, rc,
4831 "error: cannot open '%s' for write", path1);
4835 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
4838 llapi_error(LLAPI_MSG_ERROR, rc,
4839 "error: cannot open '%s' for write", path2);
4843 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
4845 llapi_error(LLAPI_MSG_ERROR, rc,
4846 "error: cannot swap layout between '%s' and '%s'",
4857 * Attempt to open a file with Lustre file identifier \a fid
4858 * and return an open file descriptor.
4860 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
4861 * \param[in] fid Lustre file identifier of file to open
4862 * \param[in] flags open() flags
4864 * \retval non-negative file descriptor on successful open
4865 * \retval -1 if an error occurred
4867 int llapi_open_by_fid(const char *lustre_dir, const lustre_fid *fid, int flags)
4869 char mntdir[PATH_MAX];
4870 char path[PATH_MAX];
4873 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
4877 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
4878 return open(path, flags);
4884 * \param fd File to lock.
4885 * \param gid Group Identifier.
4887 * \retval 0 on success.
4888 * \retval -errno on failure.
4890 int llapi_group_lock(int fd, int gid)
4894 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
4897 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
4905 * \param fd File to unlock.
4906 * \param gid Group Identifier.
4908 * \retval 0 on success.
4909 * \retval -errno on failure.
4911 int llapi_group_unlock(int fd, int gid)
4915 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
4918 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");