4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/utils/liblustreapi.c
34 * Author: Peter J. Braam <braam@clusterfs.com>
35 * Author: Phil Schwan <phil@clusterfs.com>
36 * Author: Robert Read <rread@clusterfs.com>
50 #include <sys/ioctl.h>
57 #include <sys/statfs.h>
58 #include <sys/syscall.h>
60 #include <sys/types.h>
61 #include <sys/xattr.h>
64 #include <libgen.h> /* for dirname() */
65 #ifdef HAVE_LINUX_UNISTD_H
66 #include <linux/unistd.h>
73 #include <libcfs/util/ioctl.h>
74 #include <libcfs/util/param.h>
75 #include <libcfs/util/string.h>
76 #include <linux/lnet/lnetctl.h>
77 #include <lustre/lustreapi.h>
78 #include <linux/lustre/lustre_ostid.h>
79 #include <linux/lustre/lustre_ioctl.h>
80 #include "lustreapi_internal.h"
82 static int llapi_msg_level = LLAPI_MSG_MAX;
83 const char *liblustreapi_cmd;
85 char *mdt_hash_name[] = { "none",
86 LMV_HASH_NAME_ALL_CHARS,
87 LMV_HASH_NAME_FNV_1A_64 };
89 void llapi_msg_set_level(int level)
91 /* ensure level is in the good range */
92 if (level < LLAPI_MSG_OFF)
93 llapi_msg_level = LLAPI_MSG_OFF;
94 else if (level > LLAPI_MSG_MAX)
95 llapi_msg_level = LLAPI_MSG_MAX;
97 llapi_msg_level = level;
100 int llapi_msg_get_level(void)
102 return llapi_msg_level;
105 void llapi_set_command_name(const char *cmd)
107 liblustreapi_cmd = cmd;
110 void llapi_clear_command_name(void)
112 liblustreapi_cmd = NULL;
115 static void error_callback_default(enum llapi_message_level level, int err,
116 const char *fmt, va_list ap)
118 if (liblustreapi_cmd != NULL)
119 fprintf(stderr, "%s %s: ", program_invocation_short_name,
122 fprintf(stderr, "%s: ", program_invocation_short_name);
123 vfprintf(stderr, fmt, ap);
124 if (level & LLAPI_MSG_NO_ERRNO)
125 fprintf(stderr, "\n");
127 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
130 static void info_callback_default(enum llapi_message_level level, int err,
131 const char *fmt, va_list ap)
134 if (liblustreapi_cmd != NULL) {
135 fprintf(stdout, "%s %s: ",
136 program_invocation_short_name,
139 fprintf(stdout, "%s: ", program_invocation_short_name);
142 vfprintf(stdout, fmt, ap);
145 static llapi_log_callback_t llapi_error_callback = error_callback_default;
146 static llapi_log_callback_t llapi_info_callback = info_callback_default;
149 /* llapi_error will preserve errno */
150 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
153 int tmp_errno = errno;
155 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
159 llapi_error_callback(level, abs(err), fmt, args);
164 /* llapi_printf will preserve errno */
165 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
168 int tmp_errno = errno;
170 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
174 llapi_info_callback(level, 0, fmt, args);
180 * Set a custom error logging function. Passing in NULL will reset the logging
181 * callback to its default value.
183 * This function returns the value of the old callback.
185 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
187 llapi_log_callback_t old = llapi_error_callback;
190 llapi_error_callback = cb;
192 llapi_error_callback = error_callback_default;
198 * Set a custom info logging function. Passing in NULL will reset the logging
199 * callback to its default value.
201 * This function returns the value of the old callback.
203 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
205 llapi_log_callback_t old = llapi_info_callback;
208 llapi_info_callback = cb;
210 llapi_info_callback = info_callback_default;
216 * size_units is to be initialized (or zeroed) by caller.
218 int llapi_parse_size(const char *optarg, unsigned long long *size,
219 unsigned long long *size_units, int bytes_spec)
222 char *argbuf = (char *)optarg;
223 unsigned long long frac = 0, frac_d = 1;
225 if (strncmp(optarg, "-", 1) == 0)
228 if (*size_units == 0)
231 *size = strtoull(argbuf, &end, 0);
232 if (end != NULL && *end == '.') {
236 frac = strtoull(argbuf, &end, 10);
237 /* count decimal places */
238 for (i = 0; i < (end - argbuf); i++)
243 if ((*end == 'b') && *(end + 1) == '\0' &&
244 (*size & (~0ULL << (64 - 9))) == 0 &&
246 *size_units = 1 << 9;
247 } else if ((*end == 'b') &&
248 *(end + 1) == '\0' &&
251 } else if ((*end == 'k' || *end == 'K') &&
252 *(end + 1) == '\0' &&
253 (*size & (~0ULL << (64 - 10))) == 0) {
254 *size_units = 1 << 10;
255 } else if ((*end == 'm' || *end == 'M') &&
256 *(end + 1) == '\0' &&
257 (*size & (~0ULL << (64 - 20))) == 0) {
258 *size_units = 1 << 20;
259 } else if ((*end == 'g' || *end == 'G') &&
260 *(end + 1) == '\0' &&
261 (*size & (~0ULL << (64 - 30))) == 0) {
262 *size_units = 1 << 30;
263 } else if ((*end == 't' || *end == 'T') &&
264 *(end + 1) == '\0' &&
265 (*size & (~0ULL << (64 - 40))) == 0) {
266 *size_units = 1ULL << 40;
267 } else if ((*end == 'p' || *end == 'P') &&
268 *(end + 1) == '\0' &&
269 (*size & (~0ULL << (64 - 50))) == 0) {
270 *size_units = 1ULL << 50;
271 } else if ((*end == 'e' || *end == 'E') &&
272 *(end + 1) == '\0' &&
273 (*size & (~0ULL << (64 - 60))) == 0) {
274 *size_units = 1ULL << 60;
279 *size = *size * *size_units + frac * *size_units / frac_d;
284 int llapi_ioctl_pack(struct obd_ioctl_data *data, char **pbuf, int max_len)
286 struct obd_ioctl_data *overlay;
289 data->ioc_len = obd_ioctl_packlen(data);
290 data->ioc_version = OBD_IOCTL_VERSION;
292 if (*pbuf != NULL && data->ioc_len > max_len) {
293 fprintf(stderr, "pbuf = %p, ioc_len = %u, max_len = %d\n",
294 *pbuf, data->ioc_len, max_len);
299 *pbuf = malloc(data->ioc_len);
304 overlay = (struct obd_ioctl_data *)*pbuf;
305 memcpy(*pbuf, data, sizeof(*data));
307 ptr = overlay->ioc_bulk;
308 if (data->ioc_inlbuf1) {
309 memcpy(ptr, data->ioc_inlbuf1, data->ioc_inllen1);
310 ptr += __ALIGN_KERNEL(data->ioc_inllen1, 8);
313 if (data->ioc_inlbuf2) {
314 memcpy(ptr, data->ioc_inlbuf2, data->ioc_inllen2);
315 ptr += __ALIGN_KERNEL(data->ioc_inllen2, 8);
318 if (data->ioc_inlbuf3) {
319 memcpy(ptr, data->ioc_inlbuf3, data->ioc_inllen3);
320 ptr += __ALIGN_KERNEL(data->ioc_inllen3, 8);
323 if (data->ioc_inlbuf4) {
324 memcpy(ptr, data->ioc_inlbuf4, data->ioc_inllen4);
325 ptr += __ALIGN_KERNEL(data->ioc_inllen4, 8);
331 int llapi_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf, int max_len)
333 struct obd_ioctl_data *overlay;
339 overlay = (struct obd_ioctl_data *)pbuf;
341 /* Preserve the caller's buffer pointers */
342 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
343 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
344 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
345 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
347 memcpy(data, pbuf, sizeof(*data));
349 ptr = overlay->ioc_bulk;
350 if (data->ioc_inlbuf1) {
351 memcpy(data->ioc_inlbuf1, ptr, data->ioc_inllen1);
352 ptr += __ALIGN_KERNEL(data->ioc_inllen1, 8);
355 if (data->ioc_inlbuf2) {
356 memcpy(data->ioc_inlbuf2, ptr, data->ioc_inllen2);
357 ptr += __ALIGN_KERNEL(data->ioc_inllen2, 8);
360 if (data->ioc_inlbuf3) {
361 memcpy(data->ioc_inlbuf3, ptr, data->ioc_inllen3);
362 ptr += __ALIGN_KERNEL(data->ioc_inllen3, 8);
365 if (data->ioc_inlbuf4) {
366 memcpy(data->ioc_inlbuf4, ptr, data->ioc_inllen4);
367 ptr += __ALIGN_KERNEL(data->ioc_inllen4, 8);
373 /* XXX: llapi_xxx() functions return negative values upon failure */
375 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
376 int stripe_count, int stripe_pattern)
380 /* 64 KB is the largest common page size I'm aware of (on ia64), but
381 * check the local page size just in case. */
382 page_size = LOV_MIN_STRIPE_SIZE;
383 if (getpagesize() > page_size) {
384 page_size = getpagesize();
385 llapi_err_noerrno(LLAPI_MSG_WARN,
386 "warning: your page size (%u) is "
387 "larger than expected (%u)", page_size,
388 LOV_MIN_STRIPE_SIZE);
390 if (!llapi_stripe_size_is_aligned(stripe_size)) {
392 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
393 "must be an even multiple of %d bytes",
394 stripe_size, page_size);
397 if (!llapi_stripe_index_is_valid(stripe_offset)) {
399 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
403 if (!llapi_stripe_count_is_valid(stripe_count)) {
405 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
409 if (llapi_stripe_size_is_too_big(stripe_size)) {
411 llapi_error(LLAPI_MSG_ERROR, rc,
412 "warning: stripe size 4G or larger "
413 "is not currently supported and would wrap");
419 int llapi_dir_stripe_limit_check(int stripe_offset, int stripe_count,
424 if (!llapi_dir_stripe_index_is_valid(stripe_offset)) {
426 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
430 if (!llapi_dir_stripe_count_is_valid(stripe_count)) {
432 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
437 if (!llapi_dir_hash_type_is_valid(hash_type)) {
439 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad hash type %d",
447 * Trim a trailing newline from a string, if it exists.
449 int llapi_chomp_string(char *buf)
465 * Wrapper to grab parameter settings for lov.*-clilov-*.* values
467 static int get_param_lov(const char *path, const char *param,
468 char *buf, size_t buf_size)
470 struct obd_uuid uuid;
473 rc = llapi_file_get_lov_uuid(path, &uuid);
477 return get_lustre_param_value("lov", uuid.uuid, FILTER_BY_EXACT, param,
482 * Wrapper to grab parameter settings for lmv.*-clilov-*.* values
484 static int get_param_lmv(const char *path, const char *param,
485 char *buf, size_t buf_size)
487 struct obd_uuid uuid;
490 rc = llapi_file_get_lmv_uuid(path, &uuid);
494 return get_lustre_param_value("lmv", uuid.uuid, FILTER_BY_EXACT, param,
498 static int get_mds_md_size(const char *path)
500 char buf[PATH_MAX], inst[PATH_MAX];
501 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
504 rc = llapi_getname(path, inst, sizeof(inst));
508 /* Get the max ea size from llite parameters. */
509 rc = get_lustre_param_value("llite", inst, FILTER_BY_EXACT,
510 "max_easize", buf, sizeof(buf));
516 return rc > 0 ? rc : md_size;
519 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
521 return get_param_lmv(path, "uuid", buf, bufsize);
525 * if pool is NULL, search tgtname in target_obd
526 * if pool is not NULL:
527 * if pool not found returns errno < 0
528 * if tgtname is NULL, returns 1 if pool is not empty and 0 if pool empty
529 * if tgtname is not NULL, returns 1 if OST is in pool and 0 if not
531 int llapi_search_tgt(char *fsname, char *poolname, char *tgtname, bool is_mdt)
533 char buffer[PATH_MAX];
539 /* You need one or the other */
540 if (poolname == NULL && fsname == NULL)
544 len = strlen(tgtname);
546 if (poolname == NULL && len == 0)
549 /* Search by poolname and fsname if is not NULL */
550 if (poolname != NULL) {
551 rc = poolpath(¶m, fsname, NULL);
553 snprintf(buffer, sizeof(buffer), "%s/%s",
554 param.gl_pathv[0], poolname);
556 } else if (fsname != NULL) {
557 rc = get_lustre_param_path(is_mdt ? "lmv" : "lov", fsname,
559 "target_obd", ¶m);
561 strncpy(buffer, param.gl_pathv[0],
567 cfs_free_param_data(¶m);
571 fd = fopen(buffer, "r");
575 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
576 if (poolname == NULL) {
578 /* Search for an tgtname in the list of targets
579 * Line format is IDX: fsname-OST/MDTxxxx_UUID STATUS */
580 ptr = strchr(buffer, ' ');
582 (strncmp(ptr + 1, tgtname, len) == 0)) {
587 /* Search for an tgtname in a pool,
588 * (or an existing non-empty pool if no tgtname) */
589 if ((tgtname == NULL) ||
590 (strncmp(buffer, tgtname, len) == 0)) {
600 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
602 return llapi_search_tgt(fsname, poolname, ostname, false);
606 * Open a Lustre file.
608 * \param name the name of the file to be opened
609 * \param flags access mode, see flags in open(2)
610 * \param mode permission of the file if it is created, see mode in open(2)
611 * \param param stripe pattern of the newly created file
613 * \retval file descriptor of opened file
614 * \retval negative errno on failure
616 int llapi_file_open_param(const char *name, int flags, mode_t mode,
617 const struct llapi_stripe_param *param)
619 char fsname[MAX_OBD_NAME + 1] = { 0 };
620 char *pool_name = param->lsp_pool;
621 struct lov_user_md *lum = NULL;
622 size_t lum_size = sizeof(*lum);
625 /* Make sure we are on a Lustre file system */
626 rc = llapi_search_fsname(name, fsname);
628 llapi_error(LLAPI_MSG_ERROR, rc,
629 "'%s' is not on a Lustre filesystem",
634 /* Check if the stripe pattern is sane. */
635 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
636 param->lsp_stripe_offset,
637 param->lsp_stripe_count,
638 param->lsp_stripe_pattern);
642 /* Make sure we have a good pool */
643 if (pool_name != NULL) {
644 /* in case user gives the full pool name <fsname>.<poolname>,
645 * strip the fsname */
646 char *ptr = strchr(pool_name, '.');
649 if (strcmp(pool_name, fsname) != 0) {
651 llapi_err_noerrno(LLAPI_MSG_ERROR,
652 "Pool '%s' is not on filesystem '%s'",
659 /* Make sure the pool exists and is non-empty */
660 rc = llapi_search_ost(fsname, pool_name, NULL);
662 char *err = rc == 0 ? "has no OSTs" : "does not exist";
664 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
665 fsname, pool_name, err);
669 lum_size = sizeof(struct lov_user_md_v3);
672 /* sanity check of target list */
673 if (param->lsp_is_specific) {
674 char ostname[MAX_OBD_NAME + 64];
678 for (i = 0; i < param->lsp_stripe_count; i++) {
679 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
680 fsname, param->lsp_osts[i]);
681 rc = llapi_search_ost(fsname, pool_name, ostname);
686 llapi_error(LLAPI_MSG_ERROR, rc,
687 "%s: cannot find OST %s in %s",
694 /* Make sure stripe offset is in OST list. */
695 if (param->lsp_osts[i] == param->lsp_stripe_offset)
699 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
700 "%s: stripe offset '%d' is not in the "
702 __func__, param->lsp_stripe_offset);
706 lum_size = lov_user_md_size(param->lsp_stripe_count,
707 LOV_USER_MAGIC_SPECIFIC);
710 lum = calloc(1, lum_size);
715 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
717 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
718 flags = O_DIRECTORY | O_RDONLY;
725 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
730 /* Initialize IOCTL striping pattern structure */
731 lum->lmm_magic = LOV_USER_MAGIC_V1;
732 lum->lmm_pattern = param->lsp_stripe_pattern;
733 lum->lmm_stripe_size = param->lsp_stripe_size;
734 lum->lmm_stripe_count = param->lsp_stripe_count;
735 lum->lmm_stripe_offset = param->lsp_stripe_offset;
736 if (pool_name != NULL) {
737 struct lov_user_md_v3 *lumv3 = (void *)lum;
739 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
740 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
742 if (param->lsp_is_specific) {
743 struct lov_user_md_v3 *lumv3 = (void *)lum;
746 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
747 if (pool_name == NULL) {
748 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
749 * OST list, therefore if pool is not specified we have
750 * to pack a null pool name for placeholder. */
751 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
754 for (i = 0; i < param->lsp_stripe_count; i++)
755 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
758 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
759 char *errmsg = "stripe already set";
762 if (errno != EEXIST && errno != EALREADY)
763 errmsg = strerror(errno);
765 llapi_err_noerrno(LLAPI_MSG_ERROR,
766 "setstripe error for '%s': %s", name, errmsg);
777 int llapi_file_open_pool(const char *name, int flags, int mode,
778 unsigned long long stripe_size, int stripe_offset,
779 int stripe_count, int stripe_pattern, char *pool_name)
781 const struct llapi_stripe_param param = {
782 .lsp_stripe_size = stripe_size,
783 .lsp_stripe_count = stripe_count,
784 .lsp_stripe_pattern = stripe_pattern,
785 .lsp_stripe_offset = stripe_offset,
786 .lsp_pool = pool_name
788 return llapi_file_open_param(name, flags, mode, ¶m);
791 int llapi_file_open(const char *name, int flags, int mode,
792 unsigned long long stripe_size, int stripe_offset,
793 int stripe_count, int stripe_pattern)
795 return llapi_file_open_pool(name, flags, mode, stripe_size,
796 stripe_offset, stripe_count,
797 stripe_pattern, NULL);
800 int llapi_file_create(const char *name, unsigned long long stripe_size,
801 int stripe_offset, int stripe_count, int stripe_pattern)
805 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
806 stripe_offset, stripe_count, stripe_pattern,
815 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
816 int stripe_offset, int stripe_count,
817 int stripe_pattern, char *pool_name)
821 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
822 stripe_offset, stripe_count, stripe_pattern,
831 static int verify_dir_param(const char *name,
832 const struct llapi_stripe_param *param)
834 char fsname[MAX_OBD_NAME + 1] = { 0 };
835 char *pool_name = param->lsp_pool;
838 /* Make sure we are on a Lustre file system */
839 rc = llapi_search_fsname(name, fsname);
841 llapi_error(LLAPI_MSG_ERROR, rc,
842 "'%s' is not on a Lustre filesystem",
847 /* Check if the stripe pattern is sane. */
848 rc = llapi_dir_stripe_limit_check(param->lsp_stripe_offset,
849 param->lsp_stripe_count,
850 param->lsp_stripe_pattern);
854 /* Make sure we have a good pool */
855 if (pool_name != NULL) {
856 /* in case user gives the full pool name <fsname>.<poolname>,
857 * strip the fsname */
858 char *ptr = strchr(pool_name, '.');
862 if (strcmp(pool_name, fsname) != 0) {
864 llapi_err_noerrno(LLAPI_MSG_ERROR,
865 "Pool '%s' is not on filesystem '%s'",
872 /* Make sure the pool exists and is non-empty */
873 rc = llapi_search_tgt(fsname, pool_name, NULL, true);
875 char *err = rc == 0 ? "has no OSTs" : "does not exist";
877 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
878 fsname, pool_name, err);
883 /* sanity check of target list */
884 if (param->lsp_is_specific) {
885 char mdtname[MAX_OBD_NAME + 64];
889 for (i = 0; i < param->lsp_stripe_count; i++) {
890 snprintf(mdtname, sizeof(mdtname), "%s-MDT%04x_UUID",
891 fsname, param->lsp_tgts[i]);
892 rc = llapi_search_tgt(fsname, pool_name, mdtname, true);
897 llapi_error(LLAPI_MSG_ERROR, rc,
898 "%s: cannot find MDT %s in %s",
905 /* Make sure stripe offset is in MDT list. */
906 if (param->lsp_tgts[i] == param->lsp_stripe_offset)
910 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
911 "%s: stripe offset '%d' is not in the "
913 __func__, param->lsp_stripe_offset);
921 static inline void param2lmu(struct lmv_user_md *lmu,
922 const struct llapi_stripe_param *param)
924 lmu->lum_magic = param->lsp_is_specific ? LMV_USER_MAGIC_SPECIFIC :
926 lmu->lum_stripe_count = param->lsp_stripe_count;
927 lmu->lum_stripe_offset = param->lsp_stripe_offset;
928 lmu->lum_hash_type = param->lsp_stripe_pattern;
929 if (param->lsp_pool != NULL)
930 strncpy(lmu->lum_pool_name, param->lsp_pool, LOV_MAXPOOLNAME);
931 if (param->lsp_is_specific) {
934 for (i = 0; i < param->lsp_stripe_count; i++)
935 lmu->lum_objects[i].lum_mds = param->lsp_tgts[i];
939 int llapi_dir_set_default_lmv(const char *name,
940 const struct llapi_stripe_param *param)
942 struct lmv_user_md lmu = { 0 };
946 rc = verify_dir_param(name, param);
950 /* TODO: default lmv doesn't support specific targets yet */
951 if (param->lsp_is_specific)
954 param2lmu(&lmu, param);
956 fd = open(name, O_DIRECTORY | O_RDONLY);
959 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
963 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lmu);
965 char *errmsg = "stripe already set";
967 if (errno != EEXIST && errno != EALREADY)
968 errmsg = strerror(errno);
970 llapi_err_noerrno(LLAPI_MSG_ERROR,
971 "default dirstripe error on '%s': %s",
978 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
979 int stripe_count, int stripe_pattern,
980 const char *pool_name)
982 const struct llapi_stripe_param param = {
983 .lsp_stripe_count = stripe_count,
984 .lsp_stripe_offset = stripe_offset,
985 .lsp_stripe_pattern = stripe_pattern,
986 .lsp_pool = (char *)pool_name
989 return llapi_dir_set_default_lmv(name, ¶m);
993 * Create a Lustre directory.
995 * \param name the name of the directory to be created
996 * \param mode permission of the file if it is created, see mode in open(2)
997 * \param param stripe pattern of the newly created directory
999 * \retval 0 on success
1000 * \retval negative errno on failure
1002 int llapi_dir_create(const char *name, mode_t mode,
1003 const struct llapi_stripe_param *param)
1005 struct lmv_user_md *lmu = NULL;
1007 struct obd_ioctl_data data = { 0 };
1010 char *dirpath = NULL;
1011 char *namepath = NULL;
1016 rc = verify_dir_param(name, param);
1020 lmu_size = lmv_user_md_size(param->lsp_stripe_count,
1021 param->lsp_is_specific ?
1022 LMV_USER_MAGIC_SPECIFIC :
1025 lmu = calloc(1, lmu_size);
1029 dirpath = strdup(name);
1035 namepath = strdup(name);
1042 param2lmu(lmu, param);
1044 filename = basename(namepath);
1045 dir = dirname(dirpath);
1047 data.ioc_inlbuf1 = (char *)filename;
1048 data.ioc_inllen1 = strlen(filename) + 1;
1049 data.ioc_inlbuf2 = (char *)lmu;
1050 data.ioc_inllen2 = lmu_size;
1051 data.ioc_type = mode;
1052 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
1054 llapi_error(LLAPI_MSG_ERROR, rc,
1055 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1060 fd = open(dir, O_DIRECTORY | O_RDONLY);
1063 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1067 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1068 char *errmsg = "stripe already set";
1071 if (errno != EEXIST && errno != EALREADY)
1072 errmsg = strerror(errno);
1074 llapi_err_noerrno(LLAPI_MSG_ERROR,
1075 "dirstripe error on '%s': %s", name, errmsg);
1085 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1086 int stripe_count, int stripe_pattern,
1087 const char *pool_name)
1089 const struct llapi_stripe_param param = {
1090 .lsp_stripe_count = stripe_count,
1091 .lsp_stripe_offset = stripe_offset,
1092 .lsp_stripe_pattern = stripe_pattern,
1093 .lsp_pool = (char *)pool_name
1096 return llapi_dir_create(name, mode, ¶m);
1099 int llapi_direntry_remove(char *dname)
1101 char *dirpath = NULL;
1102 char *namepath = NULL;
1108 dirpath = strdup(dname);
1109 namepath = strdup(dname);
1110 if (!dirpath || !namepath)
1113 filename = basename(namepath);
1115 dir = dirname(dirpath);
1117 fd = open(dir, O_DIRECTORY | O_RDONLY);
1120 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1125 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1126 char *errmsg = strerror(errno);
1127 llapi_err_noerrno(LLAPI_MSG_ERROR,
1128 "error on ioctl %#jx for '%s' (%d): %s",
1129 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1141 * Find the fsname, the full path, and/or an open fd.
1142 * Either the fsname or path must not be NULL
1144 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1147 char buf[PATH_MAX], mntdir[PATH_MAX];
1148 char *ptr, *ptr_end;
1150 int idx = 0, len = 0, mntlen, fd;
1153 /* get the mount point */
1154 fp = setmntent(PROC_MOUNTS, "r");
1157 llapi_error(LLAPI_MSG_ERROR, rc,
1158 "cannot retrieve filesystem mount point");
1162 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1165 if (!llapi_is_lustre_mnt(&mnt))
1168 if ((want & WANT_INDEX) && (idx++ != index))
1171 mntlen = strlen(mnt.mnt_dir);
1172 ptr = strchr(mnt.mnt_fsname, '/');
1173 while (ptr && *ptr == '/')
1175 /* thanks to the call to llapi_is_lustre_mnt() above,
1176 * we are sure that mnt.mnt_fsname contains ":/",
1177 * so ptr should never be NULL */
1181 while (*ptr_end != '/' && *ptr_end != '\0')
1184 /* Check the fsname for a match, if given */
1185 if (!(want & WANT_FSNAME) && fsname != NULL &&
1186 (strlen(fsname) > 0) &&
1187 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1190 /* If the path isn't set return the first one we find */
1191 if (path == NULL || strlen(path) == 0) {
1192 strncpy(mntdir, mnt.mnt_dir, sizeof(mntdir) - 1);
1193 mntdir[sizeof(mntdir) - 1] = '\0';
1194 if ((want & WANT_FSNAME) && fsname != NULL) {
1195 strncpy(fsname, ptr, ptr_end - ptr);
1196 fsname[ptr_end - ptr] = '\0';
1200 /* Otherwise find the longest matching path */
1201 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1202 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1203 strncpy(mntdir, mnt.mnt_dir, sizeof(mntdir) - 1);
1204 mntdir[sizeof(mntdir) - 1] = '\0';
1206 if ((want & WANT_FSNAME) && fsname != NULL) {
1207 strncpy(fsname, ptr, ptr_end - ptr);
1208 fsname[ptr_end - ptr] = '\0';
1217 if ((want & WANT_PATH) && path != NULL) {
1218 strncpy(path, mntdir, PATH_MAX);
1219 path[strlen(mntdir)] = '\0';
1221 if (want & WANT_FD) {
1222 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1225 llapi_error(LLAPI_MSG_ERROR, rc,
1226 "cannot open '%s': %s", mntdir,
1233 } else if (want & WANT_ERROR)
1234 llapi_err_noerrno(LLAPI_MSG_ERROR,
1235 "'%s' not on a mounted Lustre filesystem",
1236 (want & WANT_PATH) ? fsname : path);
1241 * search lustre mounts
1243 * Calling this function will return to the user the mount point, mntdir, and
1244 * the file system name, fsname, if the user passed a buffer to this routine.
1246 * The user inputs are pathname and index. If the pathname is supplied then
1247 * the value of the index will be ignored. The pathname will return data if
1248 * the pathname is located on a lustre mount. Index is used to pick which
1249 * mount point you want in the case of multiple mounted lustre file systems.
1250 * See function lfs_osts in lfs.c for an example of the index use.
1252 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1255 int want = WANT_PATH, idx = -1;
1257 if (!pathname || pathname[0] == '\0') {
1261 strcpy(mntdir, pathname);
1264 want |= WANT_FSNAME;
1265 return get_root_path(want, fsname, NULL, mntdir, idx);
1268 /* Given a path, find the corresponding Lustre fsname */
1269 int llapi_search_fsname(const char *pathname, char *fsname)
1274 path = realpath(pathname, NULL);
1276 char tmp[PATH_MAX - 1];
1282 if (pathname[0] != '/') {
1283 /* Need an absolute path, but realpath() only works for
1284 * pathnames that actually exist. We go through the
1285 * extra hurdle of dirname(getcwd() + pathname) in
1286 * case the relative pathname contains ".." in it. */
1287 char realpath[PATH_MAX - 1];
1289 if (getcwd(realpath, sizeof(realpath) - 2) == NULL) {
1291 llapi_error(LLAPI_MSG_ERROR, rc,
1292 "cannot get current working directory");
1296 rc = snprintf(tmp, sizeof(tmp), "%s/", realpath);
1297 if (rc >= sizeof(tmp)) {
1299 llapi_error(LLAPI_MSG_ERROR, rc,
1300 "invalid parent path '%s'",
1306 rc = snprintf(buf, sizeof(buf), "%s%s", tmp, pathname);
1307 if (rc >= sizeof(buf)) {
1309 llapi_error(LLAPI_MSG_ERROR, rc,
1310 "invalid path '%s'", pathname);
1313 path = realpath(buf, NULL);
1315 ptr = strrchr(buf, '/');
1317 llapi_error(LLAPI_MSG_ERROR |
1318 LLAPI_MSG_NO_ERRNO, 0,
1319 "cannot resolve path '%s'",
1324 path = realpath(buf, NULL);
1327 llapi_error(LLAPI_MSG_ERROR, rc,
1328 "cannot resolve path '%s'",
1334 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1339 int llapi_search_rootpath(char *pathname, const char *fsname)
1341 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1344 int llapi_getname(const char *path, char *buf, size_t size)
1346 struct obd_uuid uuid_buf;
1347 char *uuid = uuid_buf.uuid;
1349 int rc, len, fsname_len;
1351 memset(&uuid_buf, 0, sizeof(uuid_buf));
1352 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1357 * We want to turn testfs-clilov-ffff88002738bc00 into
1358 * testfs-ffff88002738bc00 in a portable way that doesn't depend
1359 * on what is after "-clilov-" as it may change in the future.
1360 * Unfortunately, the "fsname" part may contain a dash, so we
1361 * can't just skip to the first dash, and the "instance" may be a
1362 * UUID in the future, so we can't necessarily go to the last dash.
1364 cfg_instance = strstr(uuid, "-clilov-");
1368 fsname_len = cfg_instance - uuid;
1369 cfg_instance += strlen("-clilov-");
1370 len = snprintf(buf, size, "%.*s-%s", fsname_len, uuid, cfg_instance);
1379 * Get the list of pool members.
1380 * \param poolname string of format \<fsname\>.\<poolname\>
1381 * \param members caller-allocated array of char*
1382 * \param list_size size of the members array
1383 * \param buffer caller-allocated buffer for storing OST names
1384 * \param buffer_size size of the buffer
1386 * \return number of members retrieved for this pool
1387 * \retval -error failure
1389 int llapi_get_poolmembers(const char *poolname, char **members,
1390 int list_size, char *buffer, int buffer_size)
1392 char fsname[PATH_MAX];
1401 /* name is FSNAME.POOLNAME */
1402 if (strlen(poolname) >= sizeof(fsname))
1405 snprintf(fsname, sizeof(fsname), "%s", poolname);
1406 pool = strchr(fsname, '.');
1413 rc = poolpath(&pathname, fsname, NULL);
1415 llapi_error(LLAPI_MSG_ERROR, rc,
1416 "Lustre filesystem '%s' not found",
1421 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1422 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1423 cfs_free_param_data(&pathname);
1424 if (rc >= sizeof(buf))
1426 fd = fopen(buf, "r");
1429 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1434 while (fgets(buf, sizeof(buf), fd) != NULL) {
1435 if (nb_entries >= list_size) {
1439 buf[sizeof(buf) - 1] = '\0';
1441 tmp = strchr(buf, '\n');
1444 if (used + strlen(buf) + 1 > buffer_size) {
1449 strcpy(buffer + used, buf);
1450 members[nb_entries] = buffer + used;
1451 used += strlen(buf) + 1;
1461 * Get the list of pools in a filesystem.
1462 * \param name filesystem name or path
1463 * \param poollist caller-allocated array of char*
1464 * \param list_size size of the poollist array
1465 * \param buffer caller-allocated buffer for storing pool names
1466 * \param buffer_size size of the buffer
1468 * \return number of pools retrieved for this filesystem
1469 * \retval -error failure
1471 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1472 char *buffer, int buffer_size)
1474 char rname[PATH_MAX];
1479 struct dirent *pool;
1481 unsigned int nb_entries = 0;
1482 unsigned int used = 0;
1485 /* initialize output array */
1486 for (i = 0; i < list_size; i++)
1489 /* is name a pathname ? */
1490 ptr = strchr(name, '/');
1492 /* only absolute pathname is supported */
1496 if (!realpath(name, rname)) {
1498 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1503 fsname = strdup(rname);
1507 rc = poolpath(&pathname, NULL, rname);
1509 /* name is FSNAME */
1510 fsname = strdup(name);
1513 rc = poolpath(&pathname, fsname, NULL);
1516 llapi_error(LLAPI_MSG_ERROR, rc,
1517 "Lustre filesystem '%s' not found", name);
1521 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1522 dir = opendir(pathname.gl_pathv[0]);
1525 llapi_error(LLAPI_MSG_ERROR, rc,
1526 "Could not open pool list for '%s'",
1533 pool = readdir(dir);
1539 /* ignore . and .. */
1540 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1543 /* check output bounds */
1544 if (nb_entries >= list_size) {
1549 /* +2 for '.' and final '\0' */
1550 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1556 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1557 poollist[nb_entries] = buffer + used;
1558 used += strlen(pool->d_name) + strlen(fsname) + 2;
1564 llapi_error(LLAPI_MSG_ERROR, rc,
1565 "Error reading pool list for '%s'", name);
1568 cfs_free_param_data(&pathname);
1571 return rc != 0 ? rc : nb_entries;
1574 /* wrapper for lfs.c and obd.c */
1575 int llapi_poollist(const char *name)
1577 /* list of pool names (assume that pool count is smaller
1579 char **list, *buffer = NULL, *fsname = (char *)name;
1580 char *poolname = NULL, *tmp = NULL, data[16];
1581 enum param_filter type = FILTER_BY_PATH;
1582 int obdcount, bufsize, rc, nb, i;
1587 if (name[0] != '/') {
1588 fsname = strdup(name);
1592 poolname = strchr(fsname, '.');
1595 type = FILTER_BY_FS_NAME;
1598 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1599 data, sizeof(data));
1602 obdcount = atoi(data);
1604 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1605 * and also an array to store the pointers for all that
1606 * allocated space. */
1608 bufsize = sizeof(struct obd_uuid) * obdcount;
1609 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1610 if (buffer == NULL) {
1614 list = (char **) (buffer + bufsize);
1617 /* name is a path or fsname */
1618 nb = llapi_get_poollist(name, list, obdcount,
1621 /* name is a pool name (<fsname>.<poolname>) */
1622 nb = llapi_get_poolmembers(name, list, obdcount,
1626 if (nb == -EOVERFLOW) {
1629 goto retry_get_pools;
1632 for (i = 0; i < nb; i++)
1633 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1634 rc = (nb < 0 ? nb : 0);
1638 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1643 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1644 void *data, struct dirent64 *de);
1646 #define OBD_NOT_FOUND (-1)
1648 static void find_param_fini(struct find_param *param)
1650 if (param->fp_migrate)
1653 if (param->fp_obd_indexes) {
1654 free(param->fp_obd_indexes);
1655 param->fp_obd_indexes = NULL;
1658 if (param->fp_lmd) {
1659 free(param->fp_lmd);
1660 param->fp_lmd = NULL;
1663 if (param->fp_lmv_md) {
1664 free(param->fp_lmv_md);
1665 param->fp_lmv_md = NULL;
1669 static int common_param_init(struct find_param *param, char *path)
1671 int lum_size = get_mds_md_size(path);
1676 /* migrate has fp_lmv_md initialized outside */
1677 if (param->fp_migrate)
1680 if (lum_size < PATH_MAX + 1)
1681 lum_size = PATH_MAX + 1;
1683 param->fp_lum_size = lum_size;
1684 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1685 if (param->fp_lmd == NULL) {
1686 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1687 "error: allocation of %zu bytes for ioctl",
1688 sizeof(lstat_t) + param->fp_lum_size);
1692 param->fp_lmv_stripe_count = 256;
1693 param->fp_lmv_md = calloc(1,
1694 lmv_user_md_size(param->fp_lmv_stripe_count,
1695 LMV_USER_MAGIC_SPECIFIC));
1696 if (param->fp_lmv_md == NULL) {
1697 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1698 "error: allocation of %d bytes for ioctl",
1699 lmv_user_md_size(param->fp_lmv_stripe_count,
1700 LMV_USER_MAGIC_SPECIFIC));
1701 find_param_fini(param);
1705 param->fp_got_uuids = 0;
1706 param->fp_obd_indexes = NULL;
1707 param->fp_obd_index = OBD_NOT_FOUND;
1708 param->fp_mdt_index = OBD_NOT_FOUND;
1712 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1713 struct dirent64 *de)
1715 struct find_param *param = data;
1721 /* set errno upon failure */
1722 static DIR *opendir_parent(const char *path)
1728 path_copy = strdup(path);
1729 if (path_copy == NULL)
1732 parent_path = dirname(path_copy);
1733 parent = opendir(parent_path);
1739 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1744 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1745 if (param->fp_get_default_lmv)
1746 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1748 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1750 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1751 if (errno == E2BIG && ret != 0) {
1755 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1756 if (stripe_count <= param->fp_lmv_stripe_count)
1759 free(param->fp_lmv_md);
1760 param->fp_lmv_stripe_count = stripe_count;
1761 lmv_size = lmv_user_md_size(stripe_count,
1762 LMV_USER_MAGIC_SPECIFIC);
1763 param->fp_lmv_md = malloc(lmv_size);
1764 if (param->fp_lmv_md == NULL) {
1765 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1766 "error: allocation of %d bytes for ioctl",
1767 lmv_user_md_size(param->fp_lmv_stripe_count,
1768 LMV_USER_MAGIC_SPECIFIC));
1776 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1777 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1779 struct lov_user_mds_data *lmd = lmdbuf;
1780 lstat_t *st = &lmd->lmd_st;
1783 if (parent_fd < 0 && dir_fd < 0)
1785 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1789 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1790 * and returns struct lov_user_mds_data, while
1791 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1793 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1794 LL_IOC_LOV_GETSTRIPE,
1796 } else if (parent_fd >= 0) {
1797 char *fname = strrchr(path, '/');
1799 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1800 * the parent directory) and returns struct lov_user_mds_data,
1801 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1803 * This avoids opening, locking, and closing each file on the
1804 * client if that is not needed. Multiple of these ioctl() can
1805 * be done on the parent dir with a single open for all
1806 * files in that directory, and it also doesn't pollute the
1807 * client dcache with millions of dentries when traversing
1808 * a large filesystem.
1810 fname = (fname == NULL ? path : fname + 1);
1812 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1815 else if (ret >= lmdlen || ret++ == 0)
1818 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1819 IOC_MDC_GETFILEINFO :
1820 IOC_MDC_GETFILESTRIPE, lmdbuf);
1823 if (ret && type == GET_LMD_INFO) {
1824 if (errno == ENOTTY) {
1825 /* ioctl is not supported, it is not a lustre fs.
1826 * Do the regular lstat(2) instead.
1828 ret = lstat_f(path, st);
1831 llapi_error(LLAPI_MSG_ERROR, ret,
1832 "error: %s: lstat failed for %s",
1835 } else if (errno == ENOENT) {
1837 llapi_error(LLAPI_MSG_WARN, ret,
1838 "warning: %s does not exist", path);
1839 } else if (errno != EISDIR && errno != ENODATA) {
1841 llapi_error(LLAPI_MSG_ERROR, ret,
1842 "%s ioctl failed for %s.",
1843 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1844 "IOC_MDC_GETFILEINFO", path);
1851 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1852 int lmdlen, enum get_lmd_info_type type)
1858 parent_fd = dirfd(parent);
1860 dir_fd = dirfd(dir);
1862 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1865 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1866 semantic_func_t sem_init,
1867 semantic_func_t sem_fini, void *data,
1868 struct dirent64 *de)
1870 struct find_param *param = (struct find_param *)data;
1871 struct dirent64 *dent;
1879 if (!d && errno != ENOTDIR) {
1881 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1884 } else if (!d && !parent) {
1885 /* ENOTDIR. Open the parent dir. */
1886 p = opendir_parent(path);
1893 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1899 while ((dent = readdir64(d)) != NULL) {
1902 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1906 if ((len + dent->d_reclen + 2) > size) {
1907 llapi_err_noerrno(LLAPI_MSG_ERROR,
1908 "error: %s: string buffer too small",
1913 strcat(path, dent->d_name);
1915 if (dent->d_type == DT_UNKNOWN) {
1916 lstat_t *st = ¶m->fp_lmd->lmd_st;
1918 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1919 param->fp_lum_size, GET_LMD_INFO);
1921 dent->d_type = IFTODT(st->st_mode);
1928 switch (dent->d_type) {
1930 llapi_err_noerrno(LLAPI_MSG_ERROR,
1931 "error: %s: '%s' is UNKNOWN type %d",
1932 __func__, dent->d_name, dent->d_type);
1935 rc = llapi_semantic_traverse(path, size, d, sem_init,
1936 sem_fini, data, dent);
1937 if (rc != 0 && ret == 0)
1943 rc = sem_init(path, d, NULL, data, dent);
1944 if (rc < 0 && ret == 0) {
1949 if (sem_fini && rc == 0)
1950 sem_fini(path, d, NULL, data, dent);
1958 sem_fini(path, parent, &d, data, de);
1967 static int param_callback(char *path, semantic_func_t sem_init,
1968 semantic_func_t sem_fini, struct find_param *param)
1970 int ret, len = strlen(path);
1973 if (len > PATH_MAX) {
1975 llapi_error(LLAPI_MSG_ERROR, ret,
1976 "Path name '%s' is too long", path);
1980 buf = (char *)malloc(PATH_MAX + 1);
1984 snprintf(buf, PATH_MAX + 1, "%s", path);
1985 ret = common_param_init(param, buf);
1989 param->fp_depth = 0;
1991 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1992 sem_fini, param, NULL);
1994 find_param_fini(param);
1996 return ret < 0 ? ret : 0;
1999 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
2001 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
2005 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
2010 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
2012 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
2015 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
2020 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
2024 fd = open(path, O_RDONLY | O_NONBLOCK);
2027 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2031 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2037 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2041 fd = open(path, O_RDONLY | O_NONBLOCK);
2044 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2048 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2060 * If uuidp is NULL, return the number of available obd uuids.
2061 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2062 * there are more OSTs than allocated to uuidp, then an error is returned with
2063 * the ost_count set to number of available obd uuids.
2065 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2066 int *ost_count, enum tgt_type type)
2068 char buf[PATH_MAX], format[32];
2069 int rc = 0, index = 0;
2070 struct obd_uuid name;
2074 /* Get the lov name */
2075 if (type == LOV_TYPE)
2076 rc = llapi_file_fget_lov_uuid(fd, &name);
2078 rc = llapi_file_fget_lmv_uuid(fd, &name);
2082 /* Now get the ost uuids */
2083 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2084 FILTER_BY_EXACT, "target_obd", ¶m);
2088 fp = fopen(param.gl_pathv[0], "r");
2091 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2096 snprintf(format, sizeof(format),
2097 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2098 while (fgets(buf, sizeof(buf), fp) != NULL) {
2099 if (uuidp && (index < *ost_count)) {
2100 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2108 if (uuidp && (index > *ost_count))
2113 cfs_free_param_data(¶m);
2117 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2119 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2122 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2127 root = open(mnt, O_RDONLY | O_DIRECTORY);
2130 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2135 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2143 /* Check if user specified value matches a real uuid. Ignore _UUID,
2144 * -osc-4ba41334, other trailing gunk in comparison.
2145 * @param real_uuid ends in "_UUID"
2146 * @param search_uuid may or may not end in "_UUID"
2148 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2150 int cmplen = strlen(real_uuid);
2151 int searchlen = strlen(search_uuid);
2153 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2155 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2158 /* The UUIDs may legitimately be different lengths, if
2159 * the system was upgraded from an older version. */
2160 if (cmplen != searchlen)
2163 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2166 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2167 * returned in param->fp_obd_index */
2168 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2170 struct obd_uuid obd_uuid;
2177 if (param->fp_got_uuids)
2180 /* Get the lov/lmv name */
2181 if (param->fp_get_lmv)
2182 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2184 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2186 if (rc != -ENOTTY) {
2187 llapi_error(LLAPI_MSG_ERROR, rc,
2188 "error: can't get %s name: %s",
2189 param->fp_get_lmv ? "lmv" : "lov",
2197 param->fp_got_uuids = 1;
2199 /* Now get the ost uuids */
2200 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2201 obd_uuid.uuid, FILTER_BY_EXACT,
2202 "target_obd", ¶m_data);
2206 fp = fopen(param_data.gl_pathv[0], "r");
2209 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2210 param_data.gl_pathv[0]);
2214 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2215 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2216 param->fp_get_lmv ? "MDTS" : "OBDS");
2218 snprintf(format, sizeof(format),
2219 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2220 while (fgets(buf, sizeof(buf), fp) != NULL) {
2223 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2226 if (param->fp_obd_uuid) {
2227 if (llapi_uuid_match(obd_uuid.uuid,
2228 param->fp_obd_uuid->uuid)) {
2229 param->fp_obd_index = index;
2232 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2233 /* Print everything */
2234 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2237 param->fp_obds_printed = 1;
2241 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2242 llapi_err_noerrno(LLAPI_MSG_ERROR,
2243 "error: %s: unknown obduuid: %s",
2244 __func__, param->fp_obd_uuid->uuid);
2248 cfs_free_param_data(¶m_data);
2252 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2253 * obd index for all these obduuids will be returned in
2254 * param->fp_obd_indexes */
2255 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2256 int num_obds, int **obdindexes, int *obdindex,
2259 int ret, obdcount, obd_valid = 0, obdnum;
2261 struct obd_uuid *uuids = NULL;
2265 if (type == LOV_TYPE)
2266 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2268 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2272 obdcount = atoi(buf);
2273 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2278 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2280 if (ret == -EOVERFLOW) {
2281 struct obd_uuid *uuids_temp;
2283 uuids_temp = realloc(uuids, obdcount *
2284 sizeof(struct obd_uuid));
2285 if (uuids_temp != NULL) {
2287 goto retry_get_uuids;
2292 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2296 indexes = malloc(num_obds * sizeof(*obdindex));
2297 if (indexes == NULL) {
2302 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2305 /* The user may have specified a simple index */
2306 i = strtol(obduuids[obdnum].uuid, &end, 0);
2307 if (end && *end == '\0' && i < obdcount) {
2308 indexes[obdnum] = i;
2311 for (i = 0; i < obdcount; i++) {
2312 if (llapi_uuid_match(uuids[i].uuid,
2313 obduuids[obdnum].uuid)) {
2314 indexes[obdnum] = i;
2320 if (i >= obdcount) {
2321 indexes[obdnum] = OBD_NOT_FOUND;
2322 llapi_err_noerrno(LLAPI_MSG_ERROR,
2323 "invalid obduuid '%s'",
2324 obduuids[obdnum].uuid);
2330 *obdindex = OBD_NOT_FOUND;
2332 *obdindex = obd_valid;
2334 *obdindexes = indexes;
2342 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2346 if (param->fp_mdt_uuid) {
2347 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2349 ¶m->fp_mdt_indexes,
2350 ¶m->fp_mdt_index, LMV_TYPE);
2355 if (param->fp_obd_uuid) {
2356 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2358 ¶m->fp_obd_indexes,
2359 ¶m->fp_obd_index, LOV_TYPE);
2364 param->fp_got_uuids = 1;
2369 int llapi_ostlist(char *path, struct find_param *param)
2374 fd = open(path, O_RDONLY | O_DIRECTORY);
2378 ret = setup_obd_uuid(fd, path, param);
2385 * Tries to determine the default stripe attributes for a given filesystem. The
2386 * filesystem to check should be specified by fsname, or will be determined
2389 static int sattr_get_defaults(const char *const fsname,
2390 unsigned int *scount,
2391 unsigned int *ssize,
2392 unsigned int *soffset)
2398 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2399 "stripecount", val, sizeof(val));
2402 *scount = atoi(val);
2406 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2407 "stripesize", val, sizeof(val));
2414 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2415 "stripeoffset", val, sizeof(val));
2418 *soffset = atoi(val);
2425 * Tries to gather the default stripe attributes for a given filesystem. If
2426 * the attributes can be determined, they are cached for easy retreival the
2427 * next time they are needed. Only a single filesystem's attributes are
2430 int sattr_cache_get_defaults(const char *const fsname,
2431 const char *const pathname, unsigned int *scount,
2432 unsigned int *ssize, unsigned int *soffset)
2435 char fsname[PATH_MAX + 1];
2436 unsigned int stripecount;
2437 unsigned int stripesize;
2438 unsigned int stripeoffset;
2444 char fsname_buf[PATH_MAX + 1];
2445 unsigned int tmp[3];
2447 if (fsname == NULL) {
2448 rc = llapi_search_fsname(pathname, fsname_buf);
2452 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2455 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2457 * Ensure all 3 sattrs (count, size, and offset) are
2458 * successfully retrieved and stored in tmp before writing to
2461 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2465 cache.stripecount = tmp[0];
2466 cache.stripesize = tmp[1];
2467 cache.stripeoffset = tmp[2];
2468 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2472 *scount = cache.stripecount;
2474 *ssize = cache.stripesize;
2476 *soffset = cache.stripeoffset;
2481 static char *layout2name(__u32 layout_pattern)
2483 if (layout_pattern == LOV_PATTERN_MDT)
2485 else if (layout_pattern == LOV_PATTERN_RAID0)
2487 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2493 enum lov_dump_flags {
2494 LDF_IS_DIR = 0x0001,
2495 LDF_IS_RAW = 0x0002,
2496 LDF_INDENT = 0x0004,
2497 LDF_SKIP_OBJS = 0x0008,
2501 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2502 struct lov_user_ost_data_v1 *objects,
2503 enum llapi_layout_verbose verbose,
2504 int depth, char *pool_name,
2505 enum lov_dump_flags flags)
2507 bool is_dir = flags & LDF_IS_DIR;
2508 bool is_raw = flags & LDF_IS_RAW;
2509 bool indent = flags & LDF_INDENT;
2510 bool yaml = flags & LDF_YAML;
2511 bool skip_objs = flags & LDF_SKIP_OBJS;
2512 char *prefix = is_dir ? "" : "lmm_";
2513 char *separator = "";
2514 char *space = indent ? " " : "";
2517 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2518 lmm_oi_set_seq(&lum->lmm_oi, 0);
2519 if (!indent && (verbose & VERBOSE_DETAIL))
2520 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2523 if (!yaml && !indent && depth && path &&
2524 ((verbose != VERBOSE_OBJID) || !is_dir))
2525 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2527 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2528 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2529 space, prefix, lum->lmm_magic);
2530 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2532 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2533 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2535 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2537 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2542 if (verbose & ~VERBOSE_DFID)
2543 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2545 /* This needs a bit of hand-holding since old 1.x lmm_oi
2546 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2547 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2548 * a real FID. Ideally the 2.x code would have stored this
2549 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2550 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2551 * worked properly (especially since IGIF FIDs use mds_inum as
2552 * the FID SEQ), but unfortunately that didn't happen.
2554 * Print it to look like an IGIF FID, even though the fields
2555 * are reversed on disk, so that it makes sense to userspace.
2557 * Don't use ostid_id() and ostid_seq(), since they assume the
2558 * oi_fid fields are in the right order. This is why there are
2559 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2561 * For newer layout types hopefully this will be a real FID. */
2562 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2563 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2564 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2565 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2566 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2568 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2571 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2575 if (verbose & VERBOSE_STRIPE_COUNT) {
2576 if (verbose & ~VERBOSE_STRIPE_COUNT)
2577 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2580 if (!is_raw && lum->lmm_stripe_count == 0 &&
2581 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2582 unsigned int scount;
2583 rc = sattr_cache_get_defaults(NULL, path,
2587 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2590 llapi_error(LLAPI_MSG_ERROR, rc,
2591 "Cannot determine default"
2594 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2595 lum->lmm_stripe_count ==
2596 (typeof(lum->lmm_stripe_count))(-1)
2597 ? -1 : lum->lmm_stripe_count);
2600 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2601 (__s16)lum->lmm_stripe_count);
2603 if (!yaml && is_dir)
2609 if (verbose & VERBOSE_STRIPE_SIZE) {
2610 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2611 if (verbose & ~VERBOSE_STRIPE_SIZE)
2612 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2614 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2616 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2619 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2621 llapi_error(LLAPI_MSG_ERROR, rc,
2622 "Cannot determine default"
2625 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2626 lum->lmm_stripe_size);
2628 if (!yaml && is_dir)
2634 if ((verbose & VERBOSE_PATTERN)) {
2635 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2636 if (verbose & ~VERBOSE_PATTERN)
2637 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2639 if (lov_pattern_supported(lum->lmm_pattern))
2640 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2641 layout2name(lum->lmm_pattern));
2643 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2644 separator = (!yaml && is_dir) ? " " : "\n";
2647 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2648 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2649 if (verbose & ~VERBOSE_GENERATION)
2650 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2652 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2653 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2657 if (verbose & VERBOSE_STRIPE_OFFSET) {
2658 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2659 if (verbose & ~VERBOSE_STRIPE_OFFSET)
2660 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2662 if (is_dir || skip_objs)
2663 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2664 lum->lmm_stripe_offset ==
2665 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2666 lum->lmm_stripe_offset);
2667 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2668 llapi_printf(LLAPI_MSG_NORMAL, "0");
2670 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2671 objects[0].l_ost_idx);
2672 if (!yaml && is_dir)
2678 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2679 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2680 if (verbose & ~VERBOSE_POOL)
2681 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2683 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2684 if (!yaml && is_dir)
2690 if (strlen(separator) != 0)
2691 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2694 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2695 struct lov_user_ost_data_v1 *objects,
2696 char *path, int obdindex, int depth,
2697 enum llapi_layout_verbose verbose,
2698 enum lov_dump_flags flags)
2700 bool is_dir = flags & LDF_IS_DIR;
2701 bool indent = flags & LDF_INDENT;
2702 bool skip_objs = flags & LDF_SKIP_OBJS;
2703 bool yaml = flags & LDF_YAML;
2704 bool obdstripe = obdindex == OBD_NOT_FOUND;
2707 if (!obdstripe && !skip_objs) {
2708 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2709 if (obdindex == objects[i].l_ost_idx) {
2719 lov_dump_user_lmm_header(lum, path, objects, verbose, depth, pool_name,
2722 if (!is_dir && !skip_objs && (verbose & VERBOSE_OBJID) &&
2723 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2724 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2725 char *space = " - ";
2728 llapi_printf(LLAPI_MSG_NORMAL,
2729 "%6slmm_objects:\n", " ");
2731 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2733 llapi_printf(LLAPI_MSG_NORMAL,
2734 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2736 for (i = 0; i < lum->lmm_stripe_count; i++) {
2737 int idx = objects[i].l_ost_idx;
2738 long long oid = ostid_id(&objects[i].l_ost_oi);
2739 long long gr = ostid_seq(&objects[i].l_ost_oi);
2741 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2745 struct lu_fid fid = { 0 };
2747 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2748 llapi_printf(LLAPI_MSG_NORMAL,
2749 "%sl_ost_idx: %d\n", space, idx);
2750 llapi_printf(LLAPI_MSG_NORMAL,
2751 "%8sl_fid: "DFID_NOBRACE"\n",
2753 } else if (indent) {
2754 struct lu_fid fid = { 0 };
2756 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2757 llapi_printf(LLAPI_MSG_NORMAL,
2758 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2759 space, i, idx, PFID(&fid));
2762 sprintf(fmt, "%s%s%s\n",
2763 "\t%6u\t%14llu\t%#13llx\t",
2764 (fid_seq_is_rsvd(gr) ||
2765 fid_seq_is_mdt0(gr)) ?
2766 "%14llu" : "%#14llx", "%s");
2767 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2769 obdindex == idx ? " *" : "");
2773 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2776 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2777 char *path, int obdindex, int depth,
2778 enum llapi_layout_verbose verbose,
2779 enum lov_dump_flags flags)
2781 struct lmv_user_mds_data *objects = lum->lum_objects;
2782 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2783 char *separator = "";
2784 bool yaml = flags & LDF_YAML;
2785 bool obdstripe = false;
2788 if (obdindex != OBD_NOT_FOUND) {
2789 if (lum->lum_stripe_count == 0) {
2790 if (obdindex == lum->lum_stripe_offset)
2793 for (i = 0; i < lum->lum_stripe_count; i++) {
2794 if (obdindex == objects[i].lum_mds) {
2795 llapi_printf(LLAPI_MSG_NORMAL,
2810 /* show all information default */
2812 if (lum->lum_magic == LMV_USER_MAGIC)
2813 verbose = VERBOSE_POOL | VERBOSE_STRIPE_COUNT |
2814 VERBOSE_STRIPE_OFFSET | VERBOSE_HASH_TYPE;
2816 verbose = VERBOSE_OBJID;
2819 if (depth && path && ((verbose != VERBOSE_OBJID)))
2820 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2822 if (verbose & VERBOSE_STRIPE_COUNT) {
2823 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2824 if (verbose & ~VERBOSE_STRIPE_COUNT)
2825 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2826 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2827 (int)lum->lum_stripe_count);
2828 if ((verbose & VERBOSE_STRIPE_OFFSET) && !yaml)
2834 if (verbose & VERBOSE_STRIPE_OFFSET) {
2835 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2836 if (verbose & ~VERBOSE_STRIPE_OFFSET)
2837 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2838 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2839 (int)lum->lum_stripe_offset);
2840 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2846 if (verbose & VERBOSE_HASH_TYPE) {
2847 unsigned int type = lum->lum_hash_type & LMV_HASH_TYPE_MASK;
2848 unsigned int flags = lum->lum_hash_type & ~LMV_HASH_TYPE_MASK;
2850 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2851 if (verbose & ~VERBOSE_HASH_TYPE)
2852 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2853 if (type < LMV_HASH_TYPE_MAX)
2854 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2855 mdt_hash_name[type]);
2857 llapi_printf(LLAPI_MSG_NORMAL, "%#x", type);
2859 if (flags & LMV_HASH_FLAG_MIGRATION)
2860 llapi_printf(LLAPI_MSG_NORMAL, ",migrating");
2861 if (flags & LMV_HASH_FLAG_DEAD)
2862 llapi_printf(LLAPI_MSG_NORMAL, ",dead");
2863 if (flags & LMV_HASH_FLAG_BAD_TYPE)
2864 llapi_printf(LLAPI_MSG_NORMAL, ",bad_type");
2865 if (flags & LMV_HASH_FLAG_LOST_LMV)
2866 llapi_printf(LLAPI_MSG_NORMAL, ",lost_lmv");
2871 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2872 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2873 if (lum->lum_stripe_count > 0)
2874 llapi_printf(LLAPI_MSG_NORMAL,
2875 "mdtidx\t\t FID[seq:oid:ver]\n");
2876 for (i = 0; i < lum->lum_stripe_count; i++) {
2877 int idx = objects[i].lum_mds;
2878 struct lu_fid *fid = &objects[i].lum_fid;
2879 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2880 llapi_printf(LLAPI_MSG_NORMAL,
2881 "%6u\t\t "DFID"\t\t%s\n",
2883 obdindex == idx ? " *" : "");
2888 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2889 pool_name[0] != '\0') {
2890 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2891 if (verbose & ~VERBOSE_POOL)
2892 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2894 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2898 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2899 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2902 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2903 enum lov_dump_flags flags)
2905 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2906 int depth = param->fp_max_depth;
2907 enum llapi_layout_verbose verbose = param->fp_verbose;
2908 bool yaml = flags & LDF_YAML;
2910 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2911 !(flags & LDF_IS_DIR)) && !yaml)
2912 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2914 if (verbose & VERBOSE_DETAIL) {
2915 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2916 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2917 " ", comp_v1->lcm_magic);
2918 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2919 " ", comp_v1->lcm_size);
2920 if (flags & LDF_IS_DIR)
2921 llapi_printf(LLAPI_MSG_NORMAL,
2922 "%2slcm_flags: %s\n", " ",
2923 comp_v1->lcm_mirror_count > 0 ?
2926 llapi_printf(LLAPI_MSG_NORMAL,
2927 "%2slcm_flags: %s\n", " ",
2928 llapi_layout_flags_string(comp_v1->lcm_flags));
2931 if (verbose & VERBOSE_GENERATION) {
2932 if (verbose & ~VERBOSE_GENERATION)
2933 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2935 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2938 if (verbose & VERBOSE_MIRROR_COUNT) {
2939 if (verbose & ~VERBOSE_MIRROR_COUNT)
2940 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2942 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2943 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2944 comp_v1->lcm_mirror_count + 1 : 1);
2947 if (verbose & VERBOSE_COMP_COUNT) {
2948 if (verbose & ~VERBOSE_COMP_COUNT)
2949 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2951 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2952 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2953 comp_v1->lcm_entry_count : 0);
2956 if (verbose & VERBOSE_DETAIL && !yaml)
2957 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2960 static void lcme_flags2str(__u32 comp_flags)
2966 llapi_printf(LLAPI_MSG_NORMAL, "0");
2969 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2970 if (comp_flags & comp_flags_table[i].cfn_flag) {
2972 llapi_printf(LLAPI_MSG_NORMAL, ",");
2973 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2974 comp_flags_table[i].cfn_name);
2975 comp_flags &= ~comp_flags_table[i].cfn_flag;
2981 llapi_printf(LLAPI_MSG_NORMAL, ",");
2982 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2986 static void lov_dump_comp_v1_entry(struct find_param *param,
2987 enum lov_dump_flags flags, int index)
2989 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2990 struct lov_comp_md_entry_v1 *entry;
2991 char *separator = "";
2992 enum llapi_layout_verbose verbose = param->fp_verbose;
2993 bool yaml = flags & LDF_YAML;
2995 entry = &comp_v1->lcm_entries[index];
2998 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
3000 if (verbose & VERBOSE_COMP_ID) {
3001 if (verbose & VERBOSE_DETAIL && !yaml)
3002 llapi_printf(LLAPI_MSG_NORMAL,
3003 "%slcme_id: ", " - ");
3004 else if (verbose & ~VERBOSE_COMP_ID)
3005 llapi_printf(LLAPI_MSG_NORMAL,
3006 "%4slcme_id: ", " ");
3007 if (entry->lcme_id != LCME_ID_INVAL)
3008 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
3010 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
3014 if (verbose & VERBOSE_MIRROR_ID) {
3015 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3016 if (verbose & ~VERBOSE_MIRROR_ID)
3017 llapi_printf(LLAPI_MSG_NORMAL,
3018 "%4slcme_mirror_id: ", " ");
3019 if (entry->lcme_id != LCME_ID_INVAL)
3020 llapi_printf(LLAPI_MSG_NORMAL, "%u",
3021 mirror_id_of(entry->lcme_id));
3023 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
3027 if (verbose & VERBOSE_COMP_FLAGS) {
3028 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3029 if (verbose & ~VERBOSE_COMP_FLAGS)
3030 llapi_printf(LLAPI_MSG_NORMAL,
3031 "%4slcme_flags: ", " ");
3032 lcme_flags2str(entry->lcme_flags);
3035 /* print snapshot timestamp if its a nosync comp */
3036 if ((verbose & VERBOSE_COMP_FLAGS) &&
3037 (entry->lcme_flags & LCME_FL_NOSYNC)) {
3038 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3039 if (verbose & ~VERBOSE_COMP_FLAGS)
3040 llapi_printf(LLAPI_MSG_NORMAL,
3041 "%4slcme_timestamp: ", " ");
3043 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3044 entry->lcme_timestamp);
3046 time_t stamp = entry->lcme_timestamp;
3047 char *date_str = asctime(localtime(&stamp));
3049 date_str[strlen(date_str) - 1] = '\0';
3050 llapi_printf(LLAPI_MSG_NORMAL, "'%s'", date_str);
3056 if (verbose & VERBOSE_COMP_START) {
3057 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3058 if (verbose & ~VERBOSE_COMP_START)
3059 llapi_printf(LLAPI_MSG_NORMAL,
3060 "%4slcme_extent.e_start: ", " ");
3061 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3062 entry->lcme_extent.e_start);
3066 if (verbose & VERBOSE_COMP_END) {
3067 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3068 if (verbose & ~VERBOSE_COMP_END)
3069 llapi_printf(LLAPI_MSG_NORMAL,
3070 "%4slcme_extent.e_end: ", " ");
3071 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3072 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3074 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3075 entry->lcme_extent.e_end);
3080 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3081 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3082 } else if (verbose & VERBOSE_DETAIL) {
3083 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3084 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3085 " ", entry->lcme_offset);
3086 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3087 " ", entry->lcme_size);
3088 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3090 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3094 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3095 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3097 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3098 * The table below gives the answers for the specified parameters (value and
3099 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3100 * --------------------------------------
3101 * 1 | file > limit; sign > 0 | -1 / -1 |
3102 * 2 | file = limit; sign > 0 | -1 / -1 |
3103 * 3 | file < limit; sign > 0 | ? / 1 |
3104 * 4 | file > limit; sign = 0 | -1 / -1 |
3105 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3106 * 6 | file < limit; sign = 0 | ? / -1 |
3107 * 7 | file > limit; sign < 0 | 1 / 1 |
3108 * 8 | file = limit; sign < 0 | ? / -1 |
3109 * 9 | file < limit; sign < 0 | ? / -1 |
3110 * --------------------------------------
3111 * Note: 5th actually means that the value is within the interval
3112 * (limit - margin, limit]. */
3113 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3114 int sign, int negopt, unsigned long long margin,
3120 /* Drop the fraction of margin (of days). */
3121 if (file + margin <= limit)
3123 } else if (sign == 0) {
3124 if (file <= limit && file + margin > limit)
3126 else if (file + margin <= limit)
3128 } else if (sign < 0) {
3135 return negopt ? ~ret + 1 : ret;
3138 static inline struct lov_user_md *
3139 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3141 return (struct lov_user_md *)((char *)comp_v1 +
3142 comp_v1->lcm_entries[ent_idx].lcme_offset);
3145 static inline struct lov_user_ost_data_v1 *
3146 lov_v1v3_objects(struct lov_user_md *v1)
3148 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3149 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3151 return v1->lmm_objects;
3155 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3157 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3158 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3159 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3161 pool_name[0] = '\0';
3165 print_last_init_comp(struct find_param *param)
3167 /* print all component info */
3168 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3171 /* print specific component info */
3172 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3173 param->fp_check_comp_start || param->fp_check_comp_end ||
3174 param->fp_check_mirror_id || param->fp_check_mirror_index)
3180 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3184 if (param->fp_comp_end == LUSTRE_EOF) {
3185 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3186 match = end == LUSTRE_EOF ? 1 : -1;
3187 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3188 match = end == LUSTRE_EOF ? -1 : 1;
3189 else /* at least EOF */
3191 if (param->fp_exclude_comp_end)
3194 unsigned long long margin;
3196 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3197 match = find_value_cmp(end, param->fp_comp_end,
3198 param->fp_comp_end_sign,
3199 param->fp_exclude_comp_end, margin, 0);
3206 * An example of "getstripe -v" for a two components PFL file:
3209 * lcm_magic: 0x0BD60BD0
3213 * lcm_entry_count: 2
3217 * lcme_extent.e_start: 0
3218 * lcme_extent.e_end: 1048576
3222 * lmm_magic: 0x0BD10BD0
3223 * lmm_seq: 0x200000401
3224 * lmm_object_id: 0x1
3225 * lmm_fid: [0x200000401:0x1:0x0]
3226 * lmm_stripe_count: 1
3227 * lmm_stripe_size: 1048576
3228 * lmm_pattern: raid0
3230 * lmm_stripe_offset: 0
3232 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3236 * lcme_extent.e_start: 1048576
3237 * lcme_extent.e_end: EOF
3241 * lmm_magic: 0x0BD10BD0
3242 * lmm_seq: 0x200000401
3243 * lmm_object_id: 0x1
3244 * lmm_fid: [0x200000401:0x1:0x0]
3245 * lmm_stripe_count: 2
3246 * lmm_stripe_size: 1048576
3247 * lmm_pattern: raid0
3249 * lmm_stripe_offset: 1
3251 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3252 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3254 static void lov_dump_comp_v1(struct find_param *param, char *path,
3255 enum lov_dump_flags flags)
3257 struct lov_comp_md_entry_v1 *entry;
3258 struct lov_user_ost_data_v1 *objects;
3259 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3260 struct lov_user_md_v1 *v1;
3261 char pool_name[LOV_MAXPOOLNAME + 1];
3262 int obdindex = param->fp_obd_index;
3264 bool obdstripe = false;
3265 __u16 mirror_index = 0;
3266 __u16 mirror_id = 0;
3268 if (obdindex != OBD_NOT_FOUND) {
3269 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3270 i < comp_v1->lcm_entry_count; i++) {
3271 if (!(comp_v1->lcm_entries[i].lcme_flags &
3275 v1 = lov_comp_entry(comp_v1, i);
3276 objects = lov_v1v3_objects(v1);
3278 for (j = 0; j < v1->lmm_stripe_count; j++) {
3279 if (obdindex == objects[j].l_ost_idx) {
3292 lov_dump_comp_v1_header(param, path, flags);
3294 flags |= LDF_INDENT;
3296 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3297 entry = &comp_v1->lcm_entries[i];
3299 if (param->fp_check_comp_flags) {
3300 if (((param->fp_comp_flags & entry->lcme_flags) !=
3301 param->fp_comp_flags) ||
3302 (param->fp_comp_neg_flags & entry->lcme_flags))
3306 if (param->fp_check_comp_id &&
3307 param->fp_comp_id != entry->lcme_id)
3310 if (param->fp_check_comp_start) {
3311 match = find_value_cmp(entry->lcme_extent.e_start,
3312 param->fp_comp_start,
3313 param->fp_comp_start_sign,
3315 param->fp_comp_start_units, 0);
3320 if (param->fp_check_comp_end) {
3321 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3327 if (param->fp_check_mirror_index) {
3328 if (mirror_id != mirror_id_of(entry->lcme_id)) {
3330 mirror_id = mirror_id_of(entry->lcme_id);
3333 match = find_value_cmp(mirror_index,
3334 param->fp_mirror_index,
3335 param->fp_mirror_index_sign,
3336 param->fp_exclude_mirror_index,
3340 } else if (param->fp_check_mirror_id) {
3341 if (mirror_id != mirror_id_of(entry->lcme_id))
3342 mirror_id = mirror_id_of(entry->lcme_id);
3344 match = find_value_cmp(mirror_id,
3345 param->fp_mirror_id,
3346 param->fp_mirror_id_sign,
3347 param->fp_exclude_mirror_id,
3353 if (print_last_init_comp(param)) {
3355 * if part of stripe info is needed, we'd print only
3356 * the last instantiated component info.
3358 if (entry->lcme_flags & LCME_FL_INIT)
3364 if (entry->lcme_flags & LCME_FL_INIT) {
3365 if (obdindex != OBD_NOT_FOUND) {
3366 flags |= LDF_SKIP_OBJS;
3367 v1 = lov_comp_entry(comp_v1, i);
3368 objects = lov_v1v3_objects(v1);
3370 for (j = 0; j < v1->lmm_stripe_count; j++) {
3371 if (obdindex == objects[j].l_ost_idx) {
3372 flags &= ~LDF_SKIP_OBJS;
3377 flags &= ~LDF_SKIP_OBJS;
3380 flags |= LDF_SKIP_OBJS;
3383 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3385 lov_dump_comp_v1_entry(param, flags, i);
3387 v1 = lov_comp_entry(comp_v1, i);
3388 objects = lov_v1v3_objects(v1);
3389 lov_v1v3_pool_name(v1, pool_name);
3391 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3392 param->fp_max_depth, param->fp_verbose,
3395 if (print_last_init_comp(param)) {
3397 * directory layout contains only layout template, print the
3401 i = comp_v1->lcm_entry_count - 1;
3404 flags &= ~LDF_SKIP_OBJS;
3406 lov_dump_comp_v1_entry(param, flags, i);
3408 v1 = lov_comp_entry(comp_v1, i);
3409 objects = lov_v1v3_objects(v1);
3410 lov_v1v3_pool_name(v1, pool_name);
3412 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3413 param->fp_max_depth, param->fp_verbose,
3418 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3419 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3422 static inline bool has_any_comp_options(struct find_param *param)
3424 enum llapi_layout_verbose verbose = param->fp_verbose;
3426 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3427 param->fp_check_comp_start || param->fp_check_comp_end ||
3428 param->fp_check_comp_flags)
3431 /* show full layout information, not component specific */
3432 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3435 return verbose & VERBOSE_COMP_OPTS;
3438 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3441 struct lov_user_md *lum = &orig->lmd_lmm;
3442 struct lov_user_mds_data *new;
3443 struct lov_comp_md_v1 *comp_v1;
3444 struct lov_comp_md_entry_v1 *ent;
3445 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3446 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3449 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3451 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3455 memcpy(new, orig, sizeof(lstat_t));
3457 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3458 comp_v1->lcm_magic = lum->lmm_magic;
3459 comp_v1->lcm_size = lum_off + lum_size;
3460 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3461 comp_v1->lcm_flags = 0;
3462 comp_v1->lcm_entry_count = 1;
3464 ent = &comp_v1->lcm_entries[0];
3466 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3467 ent->lcme_extent.e_start = 0;
3468 ent->lcme_extent.e_end = LUSTRE_EOF;
3469 ent->lcme_offset = lum_off;
3470 ent->lcme_size = lum_size;
3472 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3477 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3478 enum lov_dump_flags flags)
3480 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3482 if (has_any_comp_options(param)) {
3483 struct lov_user_mds_data *new_lmd, *orig_lmd;
3485 orig_lmd = param->fp_lmd;
3486 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3487 if (new_lmd != NULL) {
3488 param->fp_lmd = new_lmd;
3489 lov_dump_comp_v1(param, path, flags);
3490 param->fp_lmd = orig_lmd;
3496 if (magic == LOV_USER_MAGIC_V1) {
3497 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3498 param->fp_lmd->lmd_lmm.lmm_objects,
3499 path, param->fp_obd_index,
3500 param->fp_max_depth, param->fp_verbose,
3503 char pool_name[LOV_MAXPOOLNAME + 1];
3504 struct lov_user_ost_data_v1 *objects;
3505 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3507 snprintf(pool_name, sizeof(pool_name), "%s",
3508 lmmv3->lmm_pool_name);
3509 objects = lmmv3->lmm_objects;
3510 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3511 objects, path, param->fp_obd_index,
3512 param->fp_max_depth, param->fp_verbose,
3517 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3518 enum lov_dump_flags flags)
3522 if (param->fp_get_lmv || param->fp_get_default_lmv)
3523 magic = (__u32)param->fp_lmv_md->lum_magic;
3525 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3528 flags |= LDF_IS_RAW;
3533 case LOV_USER_MAGIC_V1:
3534 case LOV_USER_MAGIC_V3:
3535 case LOV_USER_MAGIC_SPECIFIC:
3536 lov_dump_plain_user_lmm(param, path, flags);
3539 case LMV_USER_MAGIC: {
3540 char pool_name[LOV_MAXPOOLNAME + 1];
3541 struct lmv_user_md *lum;
3543 lum = (struct lmv_user_md *)param->fp_lmv_md;
3544 snprintf(pool_name, sizeof(pool_name), "%s",
3545 lum->lum_pool_name);
3546 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3547 param->fp_max_depth, param->fp_verbose,
3551 case LOV_USER_MAGIC_COMP_V1:
3552 lov_dump_comp_v1(param, path, flags);
3555 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3556 "(expecting one of %#x %#x %#x %#x)\n",
3557 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3558 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3559 LMV_USER_MAGIC, LMV_MAGIC_V1);
3564 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3570 fname = strrchr(path, '/');
3572 /* It should be a file (or other non-directory) */
3573 if (fname == NULL) {
3574 dname = (char *)malloc(2);
3578 fname = (char *)path;
3580 dname = (char *)malloc(fname - path + 1);
3583 strncpy(dname, path, fname - path);
3584 dname[fname - path] = '\0';
3588 fd = open(dname, O_RDONLY | O_NONBLOCK);
3594 strcpy((char *)lum, fname);
3595 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3598 if (close(fd) == -1 && rc == 0)
3606 int llapi_file_lookup(int dirfd, const char *name)
3608 struct obd_ioctl_data data = { 0 };
3613 if (dirfd < 0 || name == NULL)
3616 data.ioc_version = OBD_IOCTL_VERSION;
3617 data.ioc_len = sizeof(data);
3618 data.ioc_inlbuf1 = (char *)name;
3619 data.ioc_inllen1 = strlen(name) + 1;
3621 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3623 llapi_error(LLAPI_MSG_ERROR, rc,
3624 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3629 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3635 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3636 * Return -1 or 1 if file timestamp does not or does match the given criteria
3637 * correspondingly. Return 0 if the MDS time is being checked and there are
3638 * attributes on OSTs and it is not yet clear if the timespamp matches.
3640 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3641 * updated timestamps. */
3642 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3647 /* Check if file is accepted. */
3648 if (param->fp_atime) {
3649 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3650 param->fp_asign, param->fp_exclude_atime,
3657 if (param->fp_mtime) {
3658 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3659 param->fp_msign, param->fp_exclude_mtime,
3664 /* If the previous check matches, but this one is not yet clear,
3665 * we should return 0 to do an RPC on OSTs. */
3670 if (param->fp_ctime) {
3671 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3672 param->fp_csign, param->fp_exclude_ctime,
3677 /* If the previous check matches, but this one is not yet clear,
3678 * we should return 0 to do an RPC on OSTs. */
3687 * Check whether the stripes matches the indexes user provided
3691 static int check_obd_match(struct find_param *param)
3693 struct lov_user_ost_data_v1 *objects;
3694 struct lov_comp_md_v1 *comp_v1 = NULL;
3695 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3696 lstat_t *st = ¶m->fp_lmd->lmd_st;
3697 int i, j, k, count = 1;
3699 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3702 if (!S_ISREG(st->st_mode))
3705 /* Only those files should be accepted, which have a
3706 * stripe on the specified OST. */
3707 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3708 comp_v1 = (struct lov_comp_md_v1 *)v1;
3709 count = comp_v1->lcm_entry_count;
3712 for (i = 0; i < count; i++) {
3714 v1 = lov_comp_entry(comp_v1, i);
3716 objects = lov_v1v3_objects(v1);
3718 for (j = 0; j < v1->lmm_stripe_count; j++) {
3719 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3722 for (k = 0; k < param->fp_num_obds; k++) {
3723 if (param->fp_obd_indexes[k] ==
3724 objects[j].l_ost_idx)
3725 return !param->fp_exclude_obd;
3730 return param->fp_exclude_obd;
3733 static int check_mdt_match(struct find_param *param)
3737 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3740 /* FIXME: For striped dir, we should get stripe information and check */
3741 for (i = 0; i < param->fp_num_mdts; i++) {
3742 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3743 return !param->fp_exclude_mdt;
3746 if (param->fp_exclude_mdt)
3753 * Check whether the obd is active or not, if it is
3754 * not active, just print the object affected by this
3757 static int print_failed_tgt(struct find_param *param, char *path, int type)
3759 struct obd_statfs stat_buf;
3760 struct obd_uuid uuid_buf;
3763 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3766 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3767 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3768 ret = llapi_obd_statfs(path, type,
3769 param->fp_obd_index, &stat_buf,
3772 llapi_printf(LLAPI_MSG_NORMAL,
3773 "obd_uuid: %s failed %s ",
3774 param->fp_obd_uuid->uuid,
3781 static int find_check_stripe_size(struct find_param *param)
3783 struct lov_comp_md_v1 *comp_v1 = NULL;
3784 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3785 int ret, i, count = 1;
3787 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3788 comp_v1 = (struct lov_comp_md_v1 *)v1;
3789 count = comp_v1->lcm_entry_count;
3790 ret = param->fp_exclude_stripe_size ? 1 : -1;
3793 for (i = 0; i < count; i++) {
3795 v1 = lov_comp_entry(comp_v1, i);
3797 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3798 param->fp_stripe_size_sign,
3799 param->fp_exclude_stripe_size,
3800 param->fp_stripe_size_units, 0);
3801 /* If any stripe_size matches */
3809 static __u32 find_get_stripe_count(struct find_param *param)
3811 struct lov_comp_md_v1 *comp_v1 = NULL;
3812 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3814 __u32 stripe_count = 0;
3816 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3817 comp_v1 = (struct lov_comp_md_v1 *)v1;
3818 count = comp_v1->lcm_entry_count;
3821 for (i = 0; i < count; i++) {
3823 v1 = lov_comp_entry(comp_v1, i);
3824 stripe_count += v1->lmm_stripe_count;
3827 return stripe_count;
3830 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3832 static int find_check_layout(struct find_param *param)
3834 struct lov_comp_md_v1 *comp_v1 = NULL;
3835 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3837 bool found = false, valid = false;
3839 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3840 comp_v1 = (struct lov_comp_md_v1 *)v1;
3841 count = comp_v1->lcm_entry_count;
3844 for (i = 0; i < count; i++) {
3846 v1 = lov_comp_entry(comp_v1, i);
3848 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3852 if (v1->lmm_pattern & param->fp_layout) {
3861 if ((found && !param->fp_exclude_layout) ||
3862 (!found && param->fp_exclude_layout))
3868 static int find_check_pool(struct find_param *param)
3870 struct lov_comp_md_v1 *comp_v1 = NULL;
3871 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3872 struct lov_user_md_v3 *v3 = (void *)v1;
3876 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3877 comp_v1 = (struct lov_comp_md_v1 *)v1;
3878 count = comp_v1->lcm_entry_count;
3879 /* empty requested pool is taken as no pool search */
3880 if (count == 0 && param->fp_poolname[0] == '\0')
3884 for (i = 0; i < count; i++) {
3885 if (comp_v1 != NULL)
3886 v1 = lov_comp_entry(comp_v1, i);
3888 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3889 (param->fp_poolname[0] == '\0')) ||
3890 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3891 (strncmp(v3->lmm_pool_name,
3892 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3893 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3894 (strcmp(param->fp_poolname, "*") == 0))) {
3900 if ((found && !param->fp_exclude_pool) ||
3901 (!found && param->fp_exclude_pool))
3907 static int find_check_comp_options(struct find_param *param)
3909 lstat_t *st = ¶m->fp_lmd->lmd_st;
3910 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3911 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3912 struct lov_comp_md_entry_v1 *entry;
3915 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3916 comp_v1 = (struct lov_comp_md_v1 *)v1;
3918 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3919 if (forged_v1 == NULL)
3921 comp_v1 = forged_v1;
3922 comp_v1->lcm_entry_count = 1;
3923 entry = &comp_v1->lcm_entries[0];
3924 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3925 entry->lcme_extent.e_start = 0;
3926 entry->lcme_extent.e_end = LUSTRE_EOF;
3929 /* invalid case, don't match for any kind of search. */
3930 if (comp_v1->lcm_entry_count == 0) {
3935 if (param->fp_check_comp_count) {
3936 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3937 param->fp_comp_count,
3938 param->fp_comp_count_sign,
3939 param->fp_exclude_comp_count, 1, 0);
3945 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3946 entry = &comp_v1->lcm_entries[i];
3948 if (param->fp_check_comp_flags) {
3950 if (((param->fp_comp_flags & entry->lcme_flags) !=
3951 param->fp_comp_flags) ||
3952 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3958 if (param->fp_check_comp_start) {
3959 ret = find_value_cmp(entry->lcme_extent.e_start,
3960 param->fp_comp_start,
3961 param->fp_comp_start_sign,
3962 param->fp_exclude_comp_start,
3963 param->fp_comp_start_units, 0);
3968 if (param->fp_check_comp_end) {
3969 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3975 /* the component matches all criteria */
3984 static int find_check_mirror_options(struct find_param *param)
3986 struct lov_comp_md_v1 *comp_v1;
3987 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3990 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3993 comp_v1 = (struct lov_comp_md_v1 *)v1;
3995 if (param->fp_check_mirror_count) {
3996 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3997 param->fp_mirror_count,
3998 param->fp_mirror_count_sign,
3999 param->fp_exclude_mirror_count, 1, 0);
4004 if (param->fp_check_mirror_state) {
4006 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
4008 if ((param->fp_mirror_state != 0 &&
4009 file_state != param->fp_mirror_state) ||
4010 file_state == param->fp_mirror_neg_state)
4017 static bool find_check_lmm_info(struct find_param *param)
4019 return param->fp_check_pool || param->fp_check_stripe_count ||
4020 param->fp_check_stripe_size || param->fp_check_layout ||
4021 param->fp_check_comp_count || param->fp_check_comp_end ||
4022 param->fp_check_comp_start || param->fp_check_comp_flags ||
4023 param->fp_check_mirror_count ||
4024 param->fp_check_mirror_state ||
4025 param->fp_check_projid;
4029 * Get file/directory project id.
4030 * by the open fd resides on.
4031 * Return 0 and project id on success, or -ve errno.
4033 static int fget_projid(int fd, int *projid)
4038 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
4042 *projid = fsx.fsx_projid;
4046 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
4047 void *data, struct dirent64 *de)
4049 struct find_param *param = (struct find_param *)data;
4050 DIR *dir = dirp == NULL ? NULL : *dirp;
4051 int decision = 1; /* 1 is accepted; -1 is rejected. */
4052 lstat_t *st = ¶m->fp_lmd->lmd_st;
4054 int checked_type = 0;
4056 __u32 stripe_count = 0;
4059 if (parent == NULL && dir == NULL)
4062 /* If a regular expression is presented, make the initial decision */
4063 if (param->fp_pattern != NULL) {
4064 char *fname = strrchr(path, '/');
4065 fname = (fname == NULL ? path : fname + 1);
4066 ret = fnmatch(param->fp_pattern, fname, 0);
4067 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
4068 (ret == 0 && param->fp_exclude_pattern))
4072 /* See if we can check the file type from the dirent. */
4073 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
4076 if (DTTOIF(de->d_type) == param->fp_type) {
4077 if (param->fp_exclude_type)
4080 if (!param->fp_exclude_type)
4087 /* Request MDS for the stat info if some of these parameters need
4088 * to be compared. */
4089 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4090 param->fp_check_uid || param->fp_check_gid ||
4091 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4092 param->fp_check_size || param->fp_check_blocks ||
4093 find_check_lmm_info(param) ||
4094 param->fp_check_mdt_count || param->fp_check_hash_type)
4097 if (param->fp_type != 0 && checked_type == 0)
4100 if (decision == 0) {
4101 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4102 param->fp_get_lmv = 1;
4103 ret = cb_get_dirstripe(path, dir, param);
4108 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4109 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4110 param->fp_lum_size, GET_LMD_INFO);
4111 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4112 find_check_lmm_info(param)) {
4113 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4115 /* We need to "fake" the "use the default" values
4116 * since the lmm struct is zeroed out at this point. */
4117 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4118 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4120 ostid_set_seq(&lmm->lmm_oi,
4121 FID_SEQ_LOV_DEFAULT);
4122 lmm->lmm_stripe_size = 0;
4123 lmm->lmm_stripe_count = 0;
4124 lmm->lmm_stripe_offset = -1;
4126 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4128 ret = llapi_file_fget_mdtidx(dirfd(dir),
4129 ¶m->fp_file_mdt_index);
4130 } else if (S_ISREG(st->st_mode)) {
4131 /* FIXME: we could get the MDT index from the
4132 * file's FID in lmd->lmd_lmm.lmm_oi without
4133 * opening the file, once we are sure that
4134 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4135 * That would still be an ioctl() to map the
4136 * FID to the MDT, but not an open RPC. */
4137 fd = open(path, O_RDONLY);
4139 ret = llapi_file_fget_mdtidx(fd,
4140 ¶m->fp_file_mdt_index);
4145 /* For a special file, we assume it resides on
4146 * the same MDT as the parent directory. */
4147 ret = llapi_file_fget_mdtidx(dirfd(parent),
4148 ¶m->fp_file_mdt_index);
4159 stripe_count = find_get_stripe_count(param);
4163 if (param->fp_type && !checked_type) {
4164 if ((st->st_mode & S_IFMT) == param->fp_type) {
4165 if (param->fp_exclude_type)
4168 if (!param->fp_exclude_type)
4174 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4175 if (lustre_fs && param->fp_got_uuids &&
4176 param->fp_dev != st->st_dev) {
4177 /* A lustre/lustre mount point is crossed. */
4178 param->fp_got_uuids = 0;
4179 param->fp_obds_printed = 0;
4180 param->fp_mdt_index = OBD_NOT_FOUND;
4181 param->fp_obd_index = OBD_NOT_FOUND;
4184 if (lustre_fs && !param->fp_got_uuids) {
4185 ret = setup_target_indexes(dir ? dir : parent, path,
4190 param->fp_dev = st->st_dev;
4191 } else if (!lustre_fs && param->fp_got_uuids) {
4192 /* A lustre/non-lustre mount point is crossed. */
4193 param->fp_got_uuids = 0;
4194 param->fp_mdt_index = OBD_NOT_FOUND;
4195 param->fp_obd_index = OBD_NOT_FOUND;
4199 if (param->fp_check_stripe_size) {
4200 decision = find_check_stripe_size(param);
4205 if (param->fp_check_stripe_count) {
4206 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4207 param->fp_stripe_count_sign,
4208 param->fp_exclude_stripe_count, 1, 0);
4213 if (param->fp_check_mdt_count) {
4214 decision = find_value_cmp(
4215 param->fp_lmv_md->lum_stripe_count,
4216 param->fp_mdt_count,
4217 param->fp_mdt_count_sign,
4218 param->fp_exclude_mdt_count, 1, 0);
4223 if (param->fp_check_layout) {
4224 decision = find_check_layout(param);
4229 if (param->fp_check_hash_type) {
4232 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4233 if ((found && param->fp_exclude_hash_type) ||
4234 (!found && !param->fp_exclude_hash_type)) {
4240 /* If an OBD UUID is specified but none matches, skip this file. */
4241 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4242 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4245 /* If an OST or MDT UUID is given, and some OST matches,
4247 if (param->fp_obd_index != OBD_NOT_FOUND ||
4248 param->fp_mdt_index != OBD_NOT_FOUND) {
4249 if (param->fp_obd_uuid) {
4250 if (check_obd_match(param)) {
4251 /* If no mdtuuid is given, we are done.
4252 * Otherwise, fall through to the mdtuuid
4254 if (!param->fp_mdt_uuid)
4261 if (param->fp_mdt_uuid) {
4262 if (check_mdt_match(param))
4269 if (param->fp_check_uid) {
4270 if (st->st_uid == param->fp_uid) {
4271 if (param->fp_exclude_uid)
4274 if (!param->fp_exclude_uid)
4279 if (param->fp_check_gid) {
4280 if (st->st_gid == param->fp_gid) {
4281 if (param->fp_exclude_gid)
4284 if (!param->fp_exclude_gid)
4289 if (param->fp_check_projid) {
4293 fd = open(path, O_RDONLY);
4296 ret = fget_projid(fd, &projid);
4301 if (projid == param->fp_projid) {
4302 if (param->fp_exclude_projid)
4305 if (!param->fp_exclude_projid)
4310 if (param->fp_check_pool) {
4311 decision = find_check_pool(param);
4316 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4317 param->fp_check_comp_start || param->fp_check_comp_end) {
4318 decision = find_check_comp_options(param);
4323 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4324 decision = find_check_mirror_options(param);
4329 /* Check the time on mds. */
4331 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4334 for_mds = lustre_fs ?
4335 (S_ISREG(st->st_mode) && stripe_count) : 0;
4336 decision = find_time_check(st, param, for_mds);
4341 /* If file still fits the request, ask ost for updated info.
4342 The regular stat is almost of the same speed as some new
4343 'glimpse-size-ioctl'. */
4345 if ((param->fp_check_size || param->fp_check_blocks) &&
4346 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4350 /* For regular files with the stripe the decision may have not
4351 * been taken yet if *time or size is to be checked. */
4352 if (param->fp_obd_index != OBD_NOT_FOUND)
4353 print_failed_tgt(param, path, LL_STATFS_LOV);
4355 if (param->fp_mdt_index != OBD_NOT_FOUND)
4356 print_failed_tgt(param, path, LL_STATFS_LMV);
4359 ret = fstat_f(dirfd(dir), st);
4360 else if (de != NULL)
4361 ret = fstatat_f(dirfd(parent), de->d_name, st,
4362 AT_SYMLINK_NOFOLLOW);
4364 ret = lstat_f(path, st);
4367 if (errno == ENOENT) {
4368 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4369 "warning: %s: %s does not exist",
4374 llapi_error(LLAPI_MSG_ERROR, ret,
4375 "%s: IOC_LOV_GETINFO on %s failed",
4381 /* Check the time on osc. */
4382 decision = find_time_check(st, param, 0);
4387 if (param->fp_check_size) {
4388 decision = find_value_cmp(st->st_size, param->fp_size,
4389 param->fp_size_sign,
4390 param->fp_exclude_size,
4391 param->fp_size_units, 0);
4396 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4397 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4398 param->fp_blocks_sign,
4399 param->fp_exclude_blocks,
4400 param->fp_blocks_units, 0);
4405 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4406 if (param->fp_zero_end)
4407 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4409 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4413 /* Do not get down anymore? */
4414 if (param->fp_depth == param->fp_max_depth) {
4425 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4426 void *param_data, struct dirent64 *de)
4428 struct find_param *param = (struct find_param *)param_data;
4429 struct lmv_user_md *lmu = param->fp_lmv_md;
4430 DIR *tmp_parent = parent;
4431 char raw[MAX_IOC_BUFLEN] = {'\0'};
4433 struct obd_ioctl_data data = { 0 };
4440 if (parent == NULL && dirp == NULL)
4449 if (parent == NULL) {
4450 tmp_parent = opendir_parent(path);
4451 if (tmp_parent == NULL) {
4454 llapi_error(LLAPI_MSG_ERROR, ret,
4455 "can not open %s", path);
4460 fd = dirfd(tmp_parent);
4462 path_copy = strdup(path);
4463 filename = basename(path_copy);
4465 data.ioc_inlbuf1 = (char *)filename;
4466 data.ioc_inllen1 = strlen(filename) + 1;
4467 data.ioc_inlbuf2 = (char *)lmu;
4468 data.ioc_inllen2 = lmv_user_md_size(lmu->lum_stripe_count,
4470 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4472 llapi_error(LLAPI_MSG_ERROR, ret,
4473 "llapi_obd_statfs: error packing ioctl data");
4478 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4480 if (errno == EBUSY && !retry) {
4481 /* because migrate may not be able to lock all involved
4482 * objects in order, for some of them it try lock, while
4483 * there may be conflicting COS locks and cause migrate
4484 * fail with EBUSY, hope a sync() could cause
4485 * transaction commit and release these COS locks. */
4489 } else if (errno == EALREADY) {
4490 if (param->fp_verbose & VERBOSE_DETAIL)
4492 "%s was migrated to MDT%d already\n",
4493 path, lmu->lum_stripe_offset);
4497 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4498 path, strerror(-ret), ret);
4501 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4502 fprintf(stdout, "migrate %s to MDT%d stripe count %d\n",
4503 path, lmu->lum_stripe_offset, lmu->lum_stripe_count);
4508 /* If the directory is being migration, we need
4509 * close the directory after migration,
4510 * so the old directory cache will be cleanup
4511 * on the client side, and re-open to get the
4512 * new directory handle */
4513 *dirp = opendir(path);
4514 if (*dirp == NULL) {
4516 llapi_error(LLAPI_MSG_ERROR, ret,
4517 "%s: Failed to open '%s'", __func__, path);
4522 closedir(tmp_parent);
4529 /* dir migration finished, shrink its stripes */
4530 static int cb_migrate_mdt_fini(char *path, DIR *parent, DIR **dirp, void *data,
4531 struct dirent64 *de)
4533 struct find_param *param = data;
4534 struct lmv_user_md *lmu = param->fp_lmv_md;
4535 int lmulen = lmv_user_md_size(lmu->lum_stripe_count, lmu->lum_magic);
4538 if (de && de->d_type != DT_DIR)
4543 * close it before setxattr because the latter may destroy the
4544 * original object, and cause close fail.
4546 ret = closedir(*dirp);
4552 ret = setxattr(path, XATTR_NAME_LMV, lmu, lmulen, 0);
4553 if (ret == -EALREADY)
4556 cb_common_fini(path, parent, dirp, data, de);
4560 int llapi_migrate_mdt(char *path, struct find_param *param)
4562 return param_callback(path, cb_migrate_mdt_init, cb_migrate_mdt_fini,
4566 int llapi_mv(char *path, struct find_param *param)
4568 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4569 static bool printed;
4572 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4573 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4577 return llapi_migrate_mdt(path, param);
4580 int llapi_find(char *path, struct find_param *param)
4582 return param_callback(path, cb_find_init, cb_common_fini, param);
4586 * Get MDT number that the file/directory inode referenced
4587 * by the open fd resides on.
4588 * Return 0 and mdtidx on success, or -ve errno.
4590 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4592 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4597 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4598 struct dirent64 *de)
4600 struct find_param *param = (struct find_param *)data;
4601 DIR *d = dirp == NULL ? NULL : *dirp;
4605 if (parent == NULL && d == NULL)
4609 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4610 } else /* if (parent) */ {
4613 fd = open(path, O_RDONLY | O_NOCTTY);
4615 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4623 if (ret == -ENODATA) {
4624 if (!param->fp_obd_uuid)
4625 llapi_printf(LLAPI_MSG_NORMAL,
4626 "'%s' has no stripe info\n", path);
4628 } else if (ret == -ENOENT) {
4629 llapi_error(LLAPI_MSG_WARN, ret,
4630 "warning: %s: '%s' does not exist",
4633 } else if (ret == -ENOTTY) {
4634 llapi_error(LLAPI_MSG_ERROR, ret,
4635 "%s: '%s' not on a Lustre fs",
4638 llapi_error(LLAPI_MSG_ERROR, ret,
4639 "error: %s: '%s' failed get_mdtidx",
4645 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4646 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4648 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4652 /* Do not go down anymore? */
4653 if (param->fp_depth == param->fp_max_depth)
4661 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4662 struct dirent64 *de)
4664 struct find_param *param = (struct find_param *)data;
4665 DIR *d = dirp == NULL ? NULL : *dirp;
4668 if (parent == NULL && d == NULL)
4671 if (param->fp_obd_uuid) {
4672 param->fp_quiet = 1;
4673 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4678 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4679 ret = cb_get_dirstripe(path, d, param);
4681 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4682 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4683 param->fp_lum_size, GET_LMD_STRIPE);
4688 if (errno == ENODATA && d != NULL) {
4689 /* We need to "fake" the "use the default" values
4690 * since the lmm struct is zeroed out at this point.
4691 * The magic needs to be set in order to satisfy
4692 * a check later on in the code path.
4693 * The object_seq needs to be set for the "(Default)"
4694 * prefix to be displayed. */
4695 if (param->fp_get_default_lmv) {
4696 struct lmv_user_md *lum = param->fp_lmv_md;
4698 lum->lum_magic = LMV_USER_MAGIC;
4699 lum->lum_stripe_count = 0;
4700 lum->lum_stripe_offset = -1;
4702 } else if (param->fp_get_lmv) {
4703 struct lmv_user_md *lum = param->fp_lmv_md;
4706 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4709 lum->lum_magic = LMV_MAGIC_V1;
4710 lum->lum_stripe_count = 0;
4711 lum->lum_stripe_offset = mdtidx;
4714 struct lov_user_md *lmm =
4715 ¶m->fp_lmd->lmd_lmm;
4717 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4719 ostid_set_seq(&lmm->lmm_oi,
4720 FID_SEQ_LOV_DEFAULT);
4721 lmm->lmm_stripe_count = 0;
4722 lmm->lmm_stripe_size = 0;
4723 lmm->lmm_stripe_offset = -1;
4726 } else if (errno == ENODATA && parent != NULL) {
4727 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4728 llapi_printf(LLAPI_MSG_NORMAL,
4729 "%s has no stripe info\n", path);
4731 } else if (errno == ENOENT) {
4732 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4733 "warning: %s: %s does not exist",
4736 } else if (errno == ENOTTY) {
4738 llapi_error(LLAPI_MSG_ERROR, ret,
4739 "%s: '%s' not on a Lustre fs?",
4744 llapi_error(LLAPI_MSG_ERROR, ret,
4745 "error: %s: %s failed for %s",
4746 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4747 "IOC_MDC_GETFILESTRIPE", path);
4754 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4755 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4758 /* Do not get down anymore? */
4759 if (param->fp_depth == param->fp_max_depth)
4767 int llapi_getstripe(char *path, struct find_param *param)
4769 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4770 cb_get_mdt_index : cb_getstripe,
4771 cb_common_fini, param);
4774 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4775 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4777 char raw[MAX_IOC_BUFLEN] = {'\0'};
4779 struct obd_ioctl_data data = { 0 };
4782 data.ioc_inlbuf1 = (char *)&type;
4783 data.ioc_inllen1 = sizeof(__u32);
4784 data.ioc_inlbuf2 = (char *)&index;
4785 data.ioc_inllen2 = sizeof(__u32);
4786 data.ioc_pbuf1 = (char *)stat_buf;
4787 data.ioc_plen1 = sizeof(struct obd_statfs);
4788 data.ioc_pbuf2 = (char *)uuid_buf;
4789 data.ioc_plen2 = sizeof(struct obd_uuid);
4791 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4793 llapi_error(LLAPI_MSG_ERROR, rc,
4794 "llapi_obd_statfs: error packing ioctl data");
4798 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4800 return rc < 0 ? -errno : 0;
4803 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4804 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4809 fd = open(path, O_RDONLY);
4812 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4814 /* If we can't even open a file on the filesystem (e.g. with
4815 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4819 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4826 #define MAX_STRING_SIZE 128
4828 int llapi_ping(char *obd_type, char *obd_name)
4830 int flags = O_RDONLY;
4831 char buf[1] = { 0 };
4835 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4836 obd_type, obd_name);
4840 fd = open(path.gl_pathv[0], flags);
4842 if (errno == EACCES && flags == O_RDONLY) {
4847 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4852 if (flags == O_RDONLY)
4853 rc = read(fd, buf, sizeof(buf));
4855 rc = write(fd, buf, sizeof(buf));
4863 cfs_free_param_data(&path);
4867 int llapi_target_iterate(int type_num, char **obd_type,
4868 void *args, llapi_cb_t cb)
4874 for (i = 0; i < type_num; i++) {
4877 rc = cfs_get_param_paths(¶m, "%s/*/uuid", obd_type[i]);
4881 for (j = 0; j < param.gl_pathc; j++) {
4882 char obd_uuid[UUID_MAX + 1];
4886 fp = fopen(param.gl_pathv[j], "r");
4889 llapi_error(LLAPI_MSG_ERROR, rc,
4890 "error: opening '%s'",
4895 if (fgets(obd_uuid, sizeof(obd_uuid), fp) == NULL) {
4897 llapi_error(LLAPI_MSG_ERROR, rc,
4898 "error: reading '%s'",
4903 /* Extract the obd_name from the sysfs path.
4904 * 'topsysfs'/fs/lustre/'obd_type'/'obd_name'.
4906 obd_name = strstr(param.gl_pathv[j], "/fs/lustre/");
4912 /* skip /fs/lustre/'obd_type'/ */
4913 obd_name += strlen(obd_type[i]) + 12;
4914 /* chop off after obd_name */
4915 ptr = strrchr(obd_name, '/');
4919 cb(obd_type[i], obd_name, obd_uuid, args);
4928 cfs_free_param_data(¶m);
4932 static void do_target_check(char *obd_type_name, char *obd_name,
4933 char *obd_uuid, void *args)
4937 rc = llapi_ping(obd_type_name, obd_name);
4938 if (rc == ENOTCONN) {
4939 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4941 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4943 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4947 int llapi_target_check(int type_num, char **obd_type, char *dir)
4949 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4952 #undef MAX_STRING_SIZE
4954 /* Is this a lustre fs? */
4955 int llapi_is_lustre_mnttype(const char *type)
4957 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4960 /* Is this a lustre client fs? */
4961 int llapi_is_lustre_mnt(struct mntent *mnt)
4963 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4964 strstr(mnt->mnt_fsname, ":/") != NULL);
4967 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4969 char fsname[PATH_MAX + 1];
4973 rc = llapi_search_fsname(mnt, fsname);
4977 root = open(mnt, O_RDONLY | O_DIRECTORY);
4980 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4984 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4992 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4993 * format must have %s%s, buf must be > 16
4994 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4995 * then buf = "lustre-MDT0000"
4997 static int get_mdtname(char *name, char *format, char *buf)
4999 char suffix[]="-MDT0000";
5000 int len = strlen(name);
5002 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
5003 name[len - 5] = '\0';
5008 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
5011 /* Not enough room to add suffix */
5012 llapi_err_noerrno(LLAPI_MSG_ERROR,
5013 "Invalid MDT name |%s|", name);
5018 return sprintf(buf, format, name, suffix);
5021 /** ioctl on filsystem root, with mdtindex sent as data
5022 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
5023 * \param mdtidxp pointer to integer within data to be filled in with the
5024 * mdt index (0 if no mdt is specified). NULL won't be filled.
5026 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
5034 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
5035 Open root and parse mdt index. */
5036 if (mdtname[0] == '/') {
5038 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
5039 (char *)mdtname, -1);
5041 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
5043 ptr = fsname + strlen(fsname) - 8;
5045 index = strtol(ptr + 4, NULL, 16);
5046 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
5050 llapi_err_noerrno(LLAPI_MSG_ERROR,
5051 "Can't open %s: %d\n", mdtname, rc);
5058 rc = ioctl(fd, opc, data);
5067 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
5068 int buflen, long long *recno, int *linkno)
5070 const char *fidstr_orig = fidstr;
5072 struct getinfo_fid2path *gf;
5077 while (*fidstr == '[')
5080 sscanf(fidstr, SFID, RFID(&fid));
5081 if (!fid_is_sane(&fid)) {
5082 llapi_err_noerrno(LLAPI_MSG_ERROR,
5083 "bad FID format '%s', should be [seq:oid:ver]"
5084 " (e.g. "DFID")\n", fidstr_orig,
5085 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
5089 gf = malloc(sizeof(*gf) + buflen);
5094 gf->gf_recno = *recno;
5095 gf->gf_linkno = *linkno;
5096 gf->gf_pathlen = buflen;
5098 /* Take path or fsname */
5099 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
5104 /* strip out instances of // */
5105 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
5106 if ((*a == '/') && (*(a + 1) == '/'))
5113 if (buf[0] == '\0') { /* ROOT path */
5118 *recno = gf->gf_recno;
5119 *linkno = gf->gf_linkno;
5126 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
5129 struct lustre_mdt_attrs *lma;
5133 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
5135 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
5138 lma = (struct lustre_mdt_attrs *)buf;
5139 fid_le_to_cpu(fid, &lma->lma_self_fid);
5143 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
5148 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5157 int llapi_fd2fid(int fd, struct lu_fid *fid)
5161 memset(fid, 0, sizeof(*fid));
5163 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5164 if (rc == -EINVAL || rc == -ENOTTY)
5165 rc = fid_from_lma(NULL, fd, fid);
5170 int llapi_path2fid(const char *path, struct lu_fid *fid)
5174 memset(fid, 0, sizeof(*fid));
5175 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5177 if (errno == ELOOP || errno == ENXIO)
5178 return fid_from_lma(path, -1, fid);
5182 rc = llapi_fd2fid(fd, fid);
5183 if (rc == -EINVAL || rc == -ENOTTY)
5184 rc = fid_from_lma(path, -1, fid);
5190 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5191 char *name, size_t name_size)
5193 struct getparent *gp;
5196 gp = malloc(sizeof(*gp) + name_size);
5200 gp->gp_linkno = linkno;
5201 gp->gp_name_size = name_size;
5203 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5209 *parent_fid = gp->gp_fid;
5211 strncpy(name, gp->gp_name, name_size);
5212 name[name_size - 1] = '\0';
5219 int llapi_path2parent(const char *path, unsigned int linkno,
5220 struct lu_fid *parent_fid, char *name, size_t name_size)
5225 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5229 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5234 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5239 root = open(mnt, O_RDONLY | O_DIRECTORY);
5242 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5246 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5249 llapi_error(LLAPI_MSG_ERROR, rc,
5250 "ioctl on %s for getting connect flags failed", mnt);
5257 * Get a 64-bit value representing the version of file data pointed by fd.
5259 * Each write or truncate, flushed on OST, will change this value. You can use
5260 * this value to verify if file data was modified. This only checks the file
5261 * data, not metadata.
5263 * \param flags 0: no flush pages, usually used it the process has already
5265 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5267 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5268 * pages from clients.
5270 * \retval 0 on success.
5271 * \retval -errno on error.
5273 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5276 struct ioc_data_version idv;
5278 idv.idv_flags = (__u32)flags;
5280 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5284 *data_version = idv.idv_version;
5290 * Flush cached pages from all clients.
5292 * \param fd File descriptor
5296 int llapi_file_flush(int fd)
5300 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5304 * Fetch layout version from OST objects. Layout version on OST objects are
5305 * only set when the file is a mirrored file AND after the file has been
5306 * written at least once.
5308 * It actually fetches the least layout version from the objects.
5310 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5313 struct ioc_data_version idv = { 0 };
5315 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5319 *layout_version = idv.idv_layout_version;
5325 * Create a file without any name and open it for read/write
5327 * - file is created as if it were a standard file in the given \a directory
5328 * - file does not appear in \a directory and mtime does not change because
5329 * the filename is handled specially by the Lustre MDS.
5330 * - file is destroyed at final close
5332 * \param[in] directory directory from which to inherit layout/MDT idx
5333 * \param[in] mdt_idx MDT index on which the file is created,
5334 * \a idx == -1 means no specific MDT is requested
5335 * \param[in] mode standard open(2) mode
5336 * \param[in] stripe_param stripe parameters. May be NULL.
5338 * \retval a file descriptor on success.
5339 * \retval -errno on error.
5341 int llapi_create_volatile_param(const char *directory, int mdt_idx,
5342 int open_flags, mode_t mode,
5343 const struct llapi_stripe_param *stripe_param)
5345 char file_path[PATH_MAX];
5346 int saved_errno = errno;
5348 unsigned int rnumber;
5354 rc = snprintf(file_path, sizeof(file_path),
5355 "%s/" LUSTRE_VOLATILE_HDR "::%.4X",
5356 directory, rnumber);
5358 rc = snprintf(file_path, sizeof(file_path),
5359 "%s/" LUSTRE_VOLATILE_HDR ":%.4X:%.4X",
5360 directory, mdt_idx, rnumber);
5362 if (rc < 0 || rc >= sizeof(file_path))
5363 return -ENAMETOOLONG;
5366 * Either open O_WRONLY or O_RDWR, creating RDONLY
5367 * is non-sensical here
5369 if ((open_flags & O_ACCMODE) == O_RDONLY)
5370 open_flags = O_RDWR | (open_flags & ~O_ACCMODE);
5372 open_flags |= O_CREAT | O_EXCL | O_NOFOLLOW;
5374 if (stripe_param != NULL) {
5375 fd = llapi_file_open_param(file_path, open_flags,
5376 mode, stripe_param);
5380 fd = open(file_path, open_flags, mode);
5384 } while (fd < 0 && rc == -EEXIST);
5387 llapi_error(LLAPI_MSG_ERROR, rc,
5388 "Cannot create volatile file '%s' in '%s'",
5389 file_path + strlen(directory) + 1 +
5390 LUSTRE_VOLATILE_HDR_LEN,
5396 * Unlink file in case this wasn't a Lustre filesystem and the magic
5397 * volatile filename wasn't handled as intended. The effect is the
5398 * same. If volatile open was supported then we expect unlink() to
5401 (void)unlink(file_path);
5404 * Since we are returning successfully we restore errno (and
5405 * mask out possible EEXIST from open() and ENOENT from unlink().
5407 errno = saved_errno;
5413 * Create a file without any name open it for read/write
5415 * - file is created as if it were a standard file in the given \a directory
5416 * - file does not appear in \a directory and mtime does not change because
5417 * the filename is handled specially by the Lustre MDS.
5418 * - file is removed at final close
5419 * - file modes are rw------- since it doesn't make sense to have a read-only
5420 * or write-only file that cannot be opened again.
5421 * - if user wants another mode it must use fchmod() on the open file, no
5422 * security problems arise because it cannot be opened by another process.
5424 * \param[in] directory directory from which to inherit layout/MDT idx
5425 * \param[in] idx MDT index on which the file is created,
5426 * \a idx == -1 means no specific MDT is requested
5427 * \param[in] open_flags standard open(2) flags
5429 * \retval a file descriptor on success.
5430 * \retval -errno on error.
5432 int llapi_create_volatile_idx(const char *directory, int mdt_idx,
5435 return llapi_create_volatile_param(directory, mdt_idx, open_flags,
5436 S_IRUSR | S_IWUSR, NULL);
5440 * Swap the layouts between 2 file descriptors
5441 * the 2 files must be open for writing
5442 * first fd received the ioctl, second fd is passed as arg
5443 * this is assymetric but avoid use of root path for ioctl
5445 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5446 int gid, __u64 flags)
5448 struct lustre_swap_layouts lsl;
5453 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5454 rc = fstat(fd1, &st1);
5458 rc = fstat(fd2, &st2);
5463 lsl.sl_flags = flags;
5467 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5471 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5472 struct timeval tv1[2];
5473 struct timeval tv2[2];
5475 memset(tv1, 0, sizeof(tv1));
5476 memset(tv2, 0, sizeof(tv2));
5478 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5479 tv1[0].tv_sec = st1.st_atime;
5480 tv2[0].tv_sec = st2.st_atime;
5482 tv1[0].tv_sec = st2.st_atime;
5483 tv2[0].tv_sec = st1.st_atime;
5486 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5487 tv1[1].tv_sec = st1.st_mtime;
5488 tv2[1].tv_sec = st2.st_mtime;
5490 tv1[1].tv_sec = st2.st_mtime;
5491 tv2[1].tv_sec = st1.st_mtime;
5494 rc = futimes(fd1, tv1);
5498 rc = futimes(fd2, tv2);
5506 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5513 while (grp_id == 0);
5515 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5523 * Swap the layouts between 2 files
5524 * the 2 files are open in write
5526 int llapi_swap_layouts(const char *path1, const char *path2,
5527 __u64 dv1, __u64 dv2, __u64 flags)
5531 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5534 llapi_error(LLAPI_MSG_ERROR, rc,
5535 "error: cannot open '%s' for write", path1);
5539 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5542 llapi_error(LLAPI_MSG_ERROR, rc,
5543 "error: cannot open '%s' for write", path2);
5547 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5549 llapi_error(LLAPI_MSG_ERROR, rc,
5550 "error: cannot swap layout between '%s' and '%s'",
5561 * Attempt to open a file with Lustre file identifier \a fid
5562 * and return an open file descriptor.
5564 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5565 * \param[in] fid Lustre file identifier of file to open
5566 * \param[in] flags open() flags
5568 * \retval non-negative file descriptor on successful open
5569 * \retval -1 if an error occurred
5571 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5574 char mntdir[PATH_MAX];
5575 char path[PATH_MAX + 64];
5578 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5582 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5583 return open(path, flags);
5589 * \param fd File to lock.
5590 * \param gid Group Identifier.
5592 * \retval 0 on success.
5593 * \retval -errno on failure.
5595 int llapi_group_lock(int fd, int gid)
5599 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5602 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5610 * \param fd File to unlock.
5611 * \param gid Group Identifier.
5613 * \retval 0 on success.
5614 * \retval -errno on failure.
5616 int llapi_group_unlock(int fd, int gid)
5620 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5623 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");