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 + 1];
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 + 1];
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);
1086 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
1087 int stripe_count, int stripe_pattern,
1088 const char *pool_name)
1090 const struct llapi_stripe_param param = {
1091 .lsp_stripe_count = stripe_count,
1092 .lsp_stripe_offset = stripe_offset,
1093 .lsp_stripe_pattern = stripe_pattern,
1094 .lsp_pool = (char *)pool_name
1097 return llapi_dir_create(name, mode, ¶m);
1100 int llapi_direntry_remove(char *dname)
1102 char *dirpath = NULL;
1103 char *namepath = NULL;
1109 dirpath = strdup(dname);
1110 namepath = strdup(dname);
1111 if (!dirpath || !namepath)
1114 filename = basename(namepath);
1116 dir = dirname(dirpath);
1118 fd = open(dir, O_DIRECTORY | O_RDONLY);
1121 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1126 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1127 char *errmsg = strerror(errno);
1128 llapi_err_noerrno(LLAPI_MSG_ERROR,
1129 "error on ioctl %#jx for '%s' (%d): %s",
1130 (uintmax_t)LL_IOC_LMV_SETSTRIPE, filename,
1142 * Find the fsname, the full path, and/or an open fd.
1143 * Either the fsname or path must not be NULL
1145 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1148 char buf[PATH_MAX], mntdir[PATH_MAX];
1149 char *ptr, *ptr_end;
1151 int idx = 0, len = 0, mntlen, fd;
1154 /* get the mount point */
1155 fp = setmntent(PROC_MOUNTS, "r");
1158 llapi_error(LLAPI_MSG_ERROR, rc,
1159 "cannot retrieve filesystem mount point");
1163 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1166 if (!llapi_is_lustre_mnt(&mnt))
1169 if ((want & WANT_INDEX) && (idx++ != index))
1172 mntlen = strlen(mnt.mnt_dir);
1173 ptr = strchr(mnt.mnt_fsname, '/');
1174 while (ptr && *ptr == '/')
1176 /* thanks to the call to llapi_is_lustre_mnt() above,
1177 * we are sure that mnt.mnt_fsname contains ":/",
1178 * so ptr should never be NULL */
1182 while (*ptr_end != '/' && *ptr_end != '\0')
1185 /* Check the fsname for a match, if given */
1186 if (!(want & WANT_FSNAME) && fsname != NULL &&
1187 (strlen(fsname) > 0) &&
1188 (strncmp(ptr, fsname, ptr_end - ptr) != 0))
1191 /* If the path isn't set return the first one we find */
1192 if (path == NULL || strlen(path) == 0) {
1193 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1194 mntdir[strlen(mnt.mnt_dir)] = '\0';
1195 if ((want & WANT_FSNAME) && fsname != NULL) {
1196 strncpy(fsname, ptr, ptr_end - ptr);
1197 fsname[ptr_end - ptr] = '\0';
1201 /* Otherwise find the longest matching path */
1202 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1203 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1204 strncpy(mntdir, mnt.mnt_dir, strlen(mnt.mnt_dir));
1205 mntdir[strlen(mnt.mnt_dir)] = '\0';
1207 if ((want & WANT_FSNAME) && fsname != NULL) {
1208 strncpy(fsname, ptr, ptr_end - ptr);
1209 fsname[ptr_end - ptr] = '\0';
1218 if ((want & WANT_PATH) && path != NULL) {
1219 strncpy(path, mntdir, strlen(mntdir));
1220 path[strlen(mntdir)] = '\0';
1222 if (want & WANT_FD) {
1223 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1226 llapi_error(LLAPI_MSG_ERROR, rc,
1227 "cannot open '%s': %s", mntdir,
1234 } else if (want & WANT_ERROR)
1235 llapi_err_noerrno(LLAPI_MSG_ERROR,
1236 "'%s' not on a mounted Lustre filesystem",
1237 (want & WANT_PATH) ? fsname : path);
1242 * search lustre mounts
1244 * Calling this function will return to the user the mount point, mntdir, and
1245 * the file system name, fsname, if the user passed a buffer to this routine.
1247 * The user inputs are pathname and index. If the pathname is supplied then
1248 * the value of the index will be ignored. The pathname will return data if
1249 * the pathname is located on a lustre mount. Index is used to pick which
1250 * mount point you want in the case of multiple mounted lustre file systems.
1251 * See function lfs_osts in lfs.c for an example of the index use.
1253 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1256 int want = WANT_PATH, idx = -1;
1258 if (!pathname || pathname[0] == '\0') {
1262 strcpy(mntdir, pathname);
1265 want |= WANT_FSNAME;
1266 return get_root_path(want, fsname, NULL, mntdir, idx);
1269 /* Given a path, find the corresponding Lustre fsname */
1270 int llapi_search_fsname(const char *pathname, char *fsname)
1275 path = realpath(pathname, NULL);
1277 char tmp[PATH_MAX - 1];
1283 if (pathname[0] != '/') {
1284 /* Need an absolute path, but realpath() only works for
1285 * pathnames that actually exist. We go through the
1286 * extra hurdle of dirname(getcwd() + pathname) in
1287 * case the relative pathname contains ".." in it. */
1288 char realpath[PATH_MAX - 1];
1290 if (getcwd(realpath, sizeof(realpath) - 2) == NULL) {
1292 llapi_error(LLAPI_MSG_ERROR, rc,
1293 "cannot get current working directory");
1297 rc = snprintf(tmp, sizeof(tmp), "%s/", realpath);
1298 if (rc >= sizeof(tmp)) {
1300 llapi_error(LLAPI_MSG_ERROR, rc,
1301 "invalid parent path '%s'",
1307 rc = snprintf(buf, sizeof(buf), "%s%s", tmp, pathname);
1308 if (rc >= sizeof(buf)) {
1310 llapi_error(LLAPI_MSG_ERROR, rc,
1311 "invalid path '%s'", pathname);
1314 path = realpath(buf, NULL);
1316 ptr = strrchr(buf, '/');
1318 llapi_error(LLAPI_MSG_ERROR |
1319 LLAPI_MSG_NO_ERRNO, 0,
1320 "cannot resolve path '%s'",
1325 path = realpath(buf, NULL);
1328 llapi_error(LLAPI_MSG_ERROR, rc,
1329 "cannot resolve path '%s'",
1335 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1340 int llapi_search_rootpath(char *pathname, const char *fsname)
1342 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1345 int llapi_getname(const char *path, char *buf, size_t size)
1347 struct obd_uuid uuid_buf;
1348 char *uuid = uuid_buf.uuid;
1351 memset(&uuid_buf, 0, sizeof(uuid_buf));
1352 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1356 /* We want to turn lustre-clilov-ffff88002738bc00 into
1357 * lustre-ffff88002738bc00. */
1359 nr = snprintf(buf, size, "%.*s-%s",
1360 (int) (strlen(uuid) - 24), uuid,
1361 uuid + strlen(uuid) - 16);
1370 * Get the list of pool members.
1371 * \param poolname string of format \<fsname\>.\<poolname\>
1372 * \param members caller-allocated array of char*
1373 * \param list_size size of the members array
1374 * \param buffer caller-allocated buffer for storing OST names
1375 * \param buffer_size size of the buffer
1377 * \return number of members retrieved for this pool
1378 * \retval -error failure
1380 int llapi_get_poolmembers(const char *poolname, char **members,
1381 int list_size, char *buffer, int buffer_size)
1383 char fsname[PATH_MAX];
1392 /* name is FSNAME.POOLNAME */
1393 if (strlen(poolname) >= sizeof(fsname))
1396 snprintf(fsname, sizeof(fsname), "%s", poolname);
1397 pool = strchr(fsname, '.');
1404 rc = poolpath(&pathname, fsname, NULL);
1406 llapi_error(LLAPI_MSG_ERROR, rc,
1407 "Lustre filesystem '%s' not found",
1412 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1413 rc = snprintf(buf, sizeof(buf), "%s/%s", pathname.gl_pathv[0], pool);
1414 cfs_free_param_data(&pathname);
1415 if (rc >= sizeof(buf))
1417 fd = fopen(buf, "r");
1420 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open %s", buf);
1425 while (fgets(buf, sizeof(buf), fd) != NULL) {
1426 if (nb_entries >= list_size) {
1430 buf[sizeof(buf) - 1] = '\0';
1432 tmp = strchr(buf, '\n');
1435 if (used + strlen(buf) + 1 > buffer_size) {
1440 strcpy(buffer + used, buf);
1441 members[nb_entries] = buffer + used;
1442 used += strlen(buf) + 1;
1452 * Get the list of pools in a filesystem.
1453 * \param name filesystem name or path
1454 * \param poollist caller-allocated array of char*
1455 * \param list_size size of the poollist array
1456 * \param buffer caller-allocated buffer for storing pool names
1457 * \param buffer_size size of the buffer
1459 * \return number of pools retrieved for this filesystem
1460 * \retval -error failure
1462 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1463 char *buffer, int buffer_size)
1465 char rname[PATH_MAX];
1470 struct dirent *pool;
1472 unsigned int nb_entries = 0;
1473 unsigned int used = 0;
1476 /* initialize output array */
1477 for (i = 0; i < list_size; i++)
1480 /* is name a pathname ? */
1481 ptr = strchr(name, '/');
1483 /* only absolute pathname is supported */
1487 if (!realpath(name, rname)) {
1489 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1494 fsname = strdup(rname);
1498 rc = poolpath(&pathname, NULL, rname);
1500 /* name is FSNAME */
1501 fsname = strdup(name);
1504 rc = poolpath(&pathname, fsname, NULL);
1507 llapi_error(LLAPI_MSG_ERROR, rc,
1508 "Lustre filesystem '%s' not found", name);
1512 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1513 dir = opendir(pathname.gl_pathv[0]);
1516 llapi_error(LLAPI_MSG_ERROR, rc,
1517 "Could not open pool list for '%s'",
1524 pool = readdir(dir);
1530 /* ignore . and .. */
1531 if (!strcmp(pool->d_name, ".") || !strcmp(pool->d_name, ".."))
1534 /* check output bounds */
1535 if (nb_entries >= list_size) {
1540 /* +2 for '.' and final '\0' */
1541 if (used + strlen(pool->d_name) + strlen(fsname) + 2
1547 sprintf(buffer + used, "%s.%s", fsname, pool->d_name);
1548 poollist[nb_entries] = buffer + used;
1549 used += strlen(pool->d_name) + strlen(fsname) + 2;
1555 llapi_error(LLAPI_MSG_ERROR, rc,
1556 "Error reading pool list for '%s'", name);
1559 cfs_free_param_data(&pathname);
1562 return rc != 0 ? rc : nb_entries;
1565 /* wrapper for lfs.c and obd.c */
1566 int llapi_poollist(const char *name)
1568 /* list of pool names (assume that pool count is smaller
1570 char **list, *buffer = NULL, *fsname = (char *)name;
1571 char *poolname = NULL, *tmp = NULL, data[16];
1572 enum param_filter type = FILTER_BY_PATH;
1573 int obdcount, bufsize, rc, nb, i;
1578 if (name[0] != '/') {
1579 fsname = strdup(name);
1583 poolname = strchr(fsname, '.');
1586 type = FILTER_BY_FS_NAME;
1589 rc = get_lustre_param_value("lov", fsname, type, "numobd",
1590 data, sizeof(data));
1593 obdcount = atoi(data);
1595 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1596 * and also an array to store the pointers for all that
1597 * allocated space. */
1599 bufsize = sizeof(struct obd_uuid) * obdcount;
1600 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1601 if (buffer == NULL) {
1605 list = (char **) (buffer + bufsize);
1608 /* name is a path or fsname */
1609 nb = llapi_get_poollist(name, list, obdcount,
1612 /* name is a pool name (<fsname>.<poolname>) */
1613 nb = llapi_get_poolmembers(name, list, obdcount,
1617 if (nb == -EOVERFLOW) {
1620 goto retry_get_pools;
1623 for (i = 0; i < nb; i++)
1624 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1625 rc = (nb < 0 ? nb : 0);
1629 if (fsname != NULL && type == FILTER_BY_FS_NAME)
1634 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1635 void *data, struct dirent64 *de);
1637 #define OBD_NOT_FOUND (-1)
1639 static int common_param_init(struct find_param *param, char *path)
1641 int lum_size = get_mds_md_size(path);
1646 /* migrate has fp_lmv_md initialized outside */
1647 if (param->fp_migrate)
1650 if (lum_size < PATH_MAX + 1)
1651 lum_size = PATH_MAX + 1;
1653 param->fp_lum_size = lum_size;
1654 param->fp_lmd = calloc(1, sizeof(lstat_t) + lum_size);
1655 if (param->fp_lmd == NULL) {
1656 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1657 "error: allocation of %zu bytes for ioctl",
1658 sizeof(lstat_t) + param->fp_lum_size);
1662 param->fp_lmv_stripe_count = 256;
1663 param->fp_lmv_md = calloc(1,
1664 lmv_user_md_size(param->fp_lmv_stripe_count,
1665 LMV_USER_MAGIC_SPECIFIC));
1666 if (param->fp_lmv_md == NULL) {
1667 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1668 "error: allocation of %d bytes for ioctl",
1669 lmv_user_md_size(param->fp_lmv_stripe_count,
1670 LMV_USER_MAGIC_SPECIFIC));
1674 param->fp_got_uuids = 0;
1675 param->fp_obd_indexes = NULL;
1676 param->fp_obd_index = OBD_NOT_FOUND;
1677 param->fp_mdt_index = OBD_NOT_FOUND;
1681 static void find_param_fini(struct find_param *param)
1683 if (param->fp_migrate)
1686 if (param->fp_obd_indexes)
1687 free(param->fp_obd_indexes);
1690 free(param->fp_lmd);
1692 if (param->fp_lmv_md)
1693 free(param->fp_lmv_md);
1696 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1697 struct dirent64 *de)
1699 struct find_param *param = data;
1705 /* set errno upon failure */
1706 static DIR *opendir_parent(const char *path)
1712 path_copy = strdup(path);
1713 if (path_copy == NULL)
1716 parent_path = dirname(path_copy);
1717 parent = opendir(parent_path);
1723 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1728 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1729 if (param->fp_get_default_lmv)
1730 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1732 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1734 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1735 if (errno == E2BIG && ret != 0) {
1739 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1740 if (stripe_count <= param->fp_lmv_stripe_count)
1743 free(param->fp_lmv_md);
1744 param->fp_lmv_stripe_count = stripe_count;
1745 lmv_size = lmv_user_md_size(stripe_count,
1746 LMV_USER_MAGIC_SPECIFIC);
1747 param->fp_lmv_md = malloc(lmv_size);
1748 if (param->fp_lmv_md == NULL) {
1749 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1750 "error: allocation of %d bytes for ioctl",
1751 lmv_user_md_size(param->fp_lmv_stripe_count,
1752 LMV_USER_MAGIC_SPECIFIC));
1760 int get_lmd_info_fd(char *path, int parent_fd, int dir_fd,
1761 void *lmdbuf, int lmdlen, enum get_lmd_info_type type)
1763 struct lov_user_mds_data *lmd = lmdbuf;
1764 lstat_t *st = &lmd->lmd_st;
1767 if (parent_fd < 0 && dir_fd < 0)
1769 if (type != GET_LMD_INFO && type != GET_LMD_STRIPE)
1773 /* LL_IOC_MDC_GETINFO operates on the current directory inode
1774 * and returns struct lov_user_mds_data, while
1775 * LL_IOC_LOV_GETSTRIPE returns only struct lov_user_md.
1777 ret = ioctl(dir_fd, type == GET_LMD_INFO ? LL_IOC_MDC_GETINFO :
1778 LL_IOC_LOV_GETSTRIPE,
1780 } else if (parent_fd >= 0) {
1781 char *fname = strrchr(path, '/');
1783 /* IOC_MDC_GETFILEINFO takes as input the filename (relative to
1784 * the parent directory) and returns struct lov_user_mds_data,
1785 * while IOC_MDC_GETFILESTRIPE returns only struct lov_user_md.
1787 * This avoids opening, locking, and closing each file on the
1788 * client if that is not needed. Multiple of these ioctl() can
1789 * be done on the parent dir with a single open for all
1790 * files in that directory, and it also doesn't pollute the
1791 * client dcache with millions of dentries when traversing
1792 * a large filesystem.
1794 fname = (fname == NULL ? path : fname + 1);
1796 ret = snprintf(lmdbuf, lmdlen, "%s", fname);
1799 else if (ret >= lmdlen || ret++ == 0)
1802 ret = ioctl(parent_fd, type == GET_LMD_INFO ?
1803 IOC_MDC_GETFILEINFO :
1804 IOC_MDC_GETFILESTRIPE, lmdbuf);
1807 if (ret && type == GET_LMD_INFO) {
1808 if (errno == ENOTTY) {
1809 /* ioctl is not supported, it is not a lustre fs.
1810 * Do the regular lstat(2) instead.
1812 ret = lstat_f(path, st);
1815 llapi_error(LLAPI_MSG_ERROR, ret,
1816 "error: %s: lstat failed for %s",
1819 } else if (errno == ENOENT) {
1821 llapi_error(LLAPI_MSG_WARN, ret,
1822 "warning: %s does not exist", path);
1823 } else if (errno != EISDIR && errno != ENODATA) {
1825 llapi_error(LLAPI_MSG_ERROR, ret,
1826 "%s ioctl failed for %s.",
1827 dir_fd >= 0 ? "LL_IOC_MDC_GETINFO" :
1828 "IOC_MDC_GETFILEINFO", path);
1835 static int get_lmd_info(char *path, DIR *parent, DIR *dir, void *lmdbuf,
1836 int lmdlen, enum get_lmd_info_type type)
1842 parent_fd = dirfd(parent);
1844 dir_fd = dirfd(dir);
1846 return get_lmd_info_fd(path, parent_fd, dir_fd, lmdbuf, lmdlen, type);
1849 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1850 semantic_func_t sem_init,
1851 semantic_func_t sem_fini, void *data,
1852 struct dirent64 *de)
1854 struct find_param *param = (struct find_param *)data;
1855 struct dirent64 *dent;
1863 if (!d && errno != ENOTDIR) {
1865 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1868 } else if (!d && !parent) {
1869 /* ENOTDIR. Open the parent dir. */
1870 p = opendir_parent(path);
1877 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1883 while ((dent = readdir64(d)) != NULL) {
1886 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1890 if ((len + dent->d_reclen + 2) > size) {
1891 llapi_err_noerrno(LLAPI_MSG_ERROR,
1892 "error: %s: string buffer too small",
1897 strcat(path, dent->d_name);
1899 if (dent->d_type == DT_UNKNOWN) {
1900 lstat_t *st = ¶m->fp_lmd->lmd_st;
1902 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1903 param->fp_lum_size, GET_LMD_INFO);
1905 dent->d_type = IFTODT(st->st_mode);
1912 switch (dent->d_type) {
1914 llapi_err_noerrno(LLAPI_MSG_ERROR,
1915 "error: %s: '%s' is UNKNOWN type %d",
1916 __func__, dent->d_name, dent->d_type);
1919 rc = llapi_semantic_traverse(path, size, d, sem_init,
1920 sem_fini, data, dent);
1921 if (rc != 0 && ret == 0)
1927 rc = sem_init(path, d, NULL, data, dent);
1928 if (rc < 0 && ret == 0) {
1933 if (sem_fini && rc == 0)
1934 sem_fini(path, d, NULL, data, dent);
1942 sem_fini(path, parent, &d, data, de);
1951 static int param_callback(char *path, semantic_func_t sem_init,
1952 semantic_func_t sem_fini, struct find_param *param)
1954 int ret, len = strlen(path);
1957 if (len > PATH_MAX) {
1959 llapi_error(LLAPI_MSG_ERROR, ret,
1960 "Path name '%s' is too long", path);
1964 buf = (char *)malloc(PATH_MAX + 1);
1968 snprintf(buf, PATH_MAX + 1, "%s", path);
1969 ret = common_param_init(param, buf);
1973 param->fp_depth = 0;
1975 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1976 sem_fini, param, NULL);
1978 find_param_fini(param);
1980 return ret < 0 ? ret : 0;
1983 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1985 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1989 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get lov name");
1994 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1996 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1999 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
2004 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
2008 fd = open(path, O_RDONLY | O_NONBLOCK);
2011 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", path);
2015 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
2021 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
2025 fd = open(path, O_RDONLY | O_NONBLOCK);
2028 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2032 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
2044 * If uuidp is NULL, return the number of available obd uuids.
2045 * If uuidp is non-NULL, then it will return the uuids of the obds. If
2046 * there are more OSTs than allocated to uuidp, then an error is returned with
2047 * the ost_count set to number of available obd uuids.
2049 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
2050 int *ost_count, enum tgt_type type)
2052 char buf[PATH_MAX], format[32];
2053 int rc = 0, index = 0;
2054 struct obd_uuid name;
2058 /* Get the lov name */
2059 if (type == LOV_TYPE)
2060 rc = llapi_file_fget_lov_uuid(fd, &name);
2062 rc = llapi_file_fget_lmv_uuid(fd, &name);
2066 /* Now get the ost uuids */
2067 rc = get_lustre_param_path(type == LOV_TYPE ? "lov" : "lmv", name.uuid,
2068 FILTER_BY_EXACT, "target_obd", ¶m);
2072 fp = fopen(param.gl_pathv[0], "r");
2075 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2080 snprintf(format, sizeof(format),
2081 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
2082 while (fgets(buf, sizeof(buf), fp) != NULL) {
2083 if (uuidp && (index < *ost_count)) {
2084 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
2092 if (uuidp && (index > *ost_count))
2097 cfs_free_param_data(¶m);
2101 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
2103 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
2106 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
2111 root = open(mnt, O_RDONLY | O_DIRECTORY);
2114 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2119 rc = ioctl(root, LL_IOC_GETOBDCOUNT, count);
2127 /* Check if user specified value matches a real uuid. Ignore _UUID,
2128 * -osc-4ba41334, other trailing gunk in comparison.
2129 * @param real_uuid ends in "_UUID"
2130 * @param search_uuid may or may not end in "_UUID"
2132 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2134 int cmplen = strlen(real_uuid);
2135 int searchlen = strlen(search_uuid);
2137 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2139 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2142 /* The UUIDs may legitimately be different lengths, if
2143 * the system was upgraded from an older version. */
2144 if (cmplen != searchlen)
2147 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2150 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2151 * returned in param->fp_obd_index */
2152 static int setup_obd_uuid(int fd, char *dname, struct find_param *param)
2154 struct obd_uuid obd_uuid;
2161 if (param->fp_got_uuids)
2164 /* Get the lov/lmv name */
2165 if (param->fp_get_lmv)
2166 rc = llapi_file_fget_lmv_uuid(fd, &obd_uuid);
2168 rc = llapi_file_fget_lov_uuid(fd, &obd_uuid);
2170 if (rc != -ENOTTY) {
2171 llapi_error(LLAPI_MSG_ERROR, rc,
2172 "error: can't get %s name: %s",
2173 param->fp_get_lmv ? "lmv" : "lov",
2181 param->fp_got_uuids = 1;
2183 /* Now get the ost uuids */
2184 rc = get_lustre_param_path(param->fp_get_lmv ? "lmv" : "lov",
2185 obd_uuid.uuid, FILTER_BY_EXACT,
2186 "target_obd", ¶m_data);
2190 fp = fopen(param_data.gl_pathv[0], "r");
2193 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
2194 param_data.gl_pathv[0]);
2198 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2199 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2200 param->fp_get_lmv ? "MDTS" : "OBDS");
2202 snprintf(format, sizeof(format),
2203 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2204 while (fgets(buf, sizeof(buf), fp) != NULL) {
2207 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2210 if (param->fp_obd_uuid) {
2211 if (llapi_uuid_match(obd_uuid.uuid,
2212 param->fp_obd_uuid->uuid)) {
2213 param->fp_obd_index = index;
2216 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2217 /* Print everything */
2218 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2221 param->fp_obds_printed = 1;
2225 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2226 llapi_err_noerrno(LLAPI_MSG_ERROR,
2227 "error: %s: unknown obduuid: %s",
2228 __func__, param->fp_obd_uuid->uuid);
2232 cfs_free_param_data(¶m_data);
2236 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2237 * obd index for all these obduuids will be returned in
2238 * param->fp_obd_indexes */
2239 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2240 int num_obds, int **obdindexes, int *obdindex,
2243 int ret, obdcount, obd_valid = 0, obdnum;
2245 struct obd_uuid *uuids = NULL;
2249 if (type == LOV_TYPE)
2250 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2252 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2256 obdcount = atoi(buf);
2257 uuids = malloc(obdcount * sizeof(struct obd_uuid));
2262 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2264 if (ret == -EOVERFLOW) {
2265 struct obd_uuid *uuids_temp;
2267 uuids_temp = realloc(uuids, obdcount *
2268 sizeof(struct obd_uuid));
2269 if (uuids_temp != NULL) {
2271 goto retry_get_uuids;
2276 llapi_error(LLAPI_MSG_ERROR, ret, "cannot get ost uuid");
2280 indexes = malloc(num_obds * sizeof(*obdindex));
2281 if (indexes == NULL) {
2286 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2289 /* The user may have specified a simple index */
2290 i = strtol(obduuids[obdnum].uuid, &end, 0);
2291 if (end && *end == '\0' && i < obdcount) {
2292 indexes[obdnum] = i;
2295 for (i = 0; i < obdcount; i++) {
2296 if (llapi_uuid_match(uuids[i].uuid,
2297 obduuids[obdnum].uuid)) {
2298 indexes[obdnum] = i;
2304 if (i >= obdcount) {
2305 indexes[obdnum] = OBD_NOT_FOUND;
2306 llapi_err_noerrno(LLAPI_MSG_ERROR,
2307 "invalid obduuid '%s'",
2308 obduuids[obdnum].uuid);
2314 *obdindex = OBD_NOT_FOUND;
2316 *obdindex = obd_valid;
2318 *obdindexes = indexes;
2326 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2330 if (param->fp_mdt_uuid) {
2331 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2333 ¶m->fp_mdt_indexes,
2334 ¶m->fp_mdt_index, LMV_TYPE);
2339 if (param->fp_obd_uuid) {
2340 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2342 ¶m->fp_obd_indexes,
2343 ¶m->fp_obd_index, LOV_TYPE);
2348 param->fp_got_uuids = 1;
2353 int llapi_ostlist(char *path, struct find_param *param)
2358 fd = open(path, O_RDONLY | O_DIRECTORY);
2362 ret = setup_obd_uuid(fd, path, param);
2369 * Tries to determine the default stripe attributes for a given filesystem. The
2370 * filesystem to check should be specified by fsname, or will be determined
2373 static int sattr_get_defaults(const char *const fsname,
2374 unsigned int *scount,
2375 unsigned int *ssize,
2376 unsigned int *soffset)
2382 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2383 "stripecount", val, sizeof(val));
2386 *scount = atoi(val);
2390 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2391 "stripesize", val, sizeof(val));
2398 rc = get_lustre_param_value("lov", fsname, FILTER_BY_FS_NAME,
2399 "stripeoffset", val, sizeof(val));
2402 *soffset = atoi(val);
2409 * Tries to gather the default stripe attributes for a given filesystem. If
2410 * the attributes can be determined, they are cached for easy retreival the
2411 * next time they are needed. Only a single filesystem's attributes are
2414 int sattr_cache_get_defaults(const char *const fsname,
2415 const char *const pathname, unsigned int *scount,
2416 unsigned int *ssize, unsigned int *soffset)
2419 char fsname[PATH_MAX + 1];
2420 unsigned int stripecount;
2421 unsigned int stripesize;
2422 unsigned int stripeoffset;
2428 char fsname_buf[PATH_MAX + 1];
2429 unsigned int tmp[3];
2431 if (fsname == NULL) {
2432 rc = llapi_search_fsname(pathname, fsname_buf);
2436 snprintf(fsname_buf, sizeof(fsname_buf), "%s", fsname);
2439 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2441 * Ensure all 3 sattrs (count, size, and offset) are
2442 * successfully retrieved and stored in tmp before writing to
2445 rc = sattr_get_defaults(fsname_buf, &tmp[0], &tmp[1], &tmp[2]);
2449 cache.stripecount = tmp[0];
2450 cache.stripesize = tmp[1];
2451 cache.stripeoffset = tmp[2];
2452 snprintf(cache.fsname, sizeof(cache.fsname), "%s", fsname_buf);
2456 *scount = cache.stripecount;
2458 *ssize = cache.stripesize;
2460 *soffset = cache.stripeoffset;
2465 static char *layout2name(__u32 layout_pattern)
2467 if (layout_pattern == LOV_PATTERN_MDT)
2469 else if (layout_pattern == LOV_PATTERN_RAID0)
2471 else if (layout_pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED))
2477 enum lov_dump_flags {
2478 LDF_IS_DIR = 0x0001,
2479 LDF_IS_RAW = 0x0002,
2480 LDF_INDENT = 0x0004,
2481 LDF_SKIP_OBJS = 0x0008,
2485 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2486 struct lov_user_ost_data_v1 *objects,
2487 enum llapi_layout_verbose verbose,
2488 int depth, char *pool_name,
2489 enum lov_dump_flags flags)
2491 bool is_dir = flags & LDF_IS_DIR;
2492 bool is_raw = flags & LDF_IS_RAW;
2493 bool indent = flags & LDF_INDENT;
2494 bool yaml = flags & LDF_YAML;
2495 bool skip_objs = flags & LDF_SKIP_OBJS;
2496 char *prefix = is_dir ? "" : "lmm_";
2497 char *separator = "";
2498 char *space = indent ? " " : "";
2501 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2502 lmm_oi_set_seq(&lum->lmm_oi, 0);
2503 if (!indent && (verbose & VERBOSE_DETAIL))
2504 llapi_printf(LLAPI_MSG_NORMAL, "%s(Default) ", space);
2507 if (!yaml && !indent && depth && path &&
2508 ((verbose != VERBOSE_OBJID) || !is_dir))
2509 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2511 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2512 llapi_printf(LLAPI_MSG_NORMAL, "%s%smagic: 0x%08X\n",
2513 space, prefix, lum->lmm_magic);
2514 llapi_printf(LLAPI_MSG_NORMAL, "%s%sseq: %#jx\n",
2516 (uintmax_t)lmm_oi_seq(&lum->lmm_oi));
2517 llapi_printf(LLAPI_MSG_NORMAL, "%s%sobject_id: %#jx\n",
2519 (uintmax_t)lmm_oi_id(&lum->lmm_oi));
2521 if ((verbose & (VERBOSE_DETAIL | VERBOSE_DFID)) && !is_dir) {
2526 if (verbose & ~VERBOSE_DFID)
2527 llapi_printf(LLAPI_MSG_NORMAL, "%slmm_fid: ",
2529 /* This needs a bit of hand-holding since old 1.x lmm_oi
2530 * have { oi.oi_id = mds_inum, oi.oi_seq = 0 } and 2.x lmm_oi
2531 * have { oi.oi_id = mds_oid, oi.oi_seq = mds_seq } instead of
2532 * a real FID. Ideally the 2.x code would have stored this
2533 * like a FID with { oi_id = mds_seq, oi_seq = mds_oid } so the
2534 * ostid union lu_fid { f_seq = mds_seq, f_oid = mds_oid }
2535 * worked properly (especially since IGIF FIDs use mds_inum as
2536 * the FID SEQ), but unfortunately that didn't happen.
2538 * Print it to look like an IGIF FID, even though the fields
2539 * are reversed on disk, so that it makes sense to userspace.
2541 * Don't use ostid_id() and ostid_seq(), since they assume the
2542 * oi_fid fields are in the right order. This is why there are
2543 * separate lmm_oi_seq() and lmm_oi_id() routines for this.
2545 * For newer layout types hopefully this will be a real FID. */
2546 seq = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2547 lmm_oi_id(&lum->lmm_oi) : lmm_oi_seq(&lum->lmm_oi);
2548 oid = lmm_oi_seq(&lum->lmm_oi) == 0 ?
2549 0 : (__u32)lmm_oi_id(&lum->lmm_oi);
2550 ver = (__u32)(lmm_oi_id(&lum->lmm_oi) >> 32);
2552 llapi_printf(LLAPI_MSG_NORMAL, DFID_NOBRACE"\n",
2555 llapi_printf(LLAPI_MSG_NORMAL, DFID"\n",
2559 if (verbose & VERBOSE_STRIPE_COUNT) {
2560 if (verbose & ~VERBOSE_STRIPE_COUNT)
2561 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_count: ",
2564 if (!is_raw && lum->lmm_stripe_count == 0 &&
2565 lov_pattern(lum->lmm_pattern) != LOV_PATTERN_MDT) {
2566 unsigned int scount;
2567 rc = sattr_cache_get_defaults(NULL, path,
2571 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2574 llapi_error(LLAPI_MSG_ERROR, rc,
2575 "Cannot determine default"
2578 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2579 lum->lmm_stripe_count ==
2580 (typeof(lum->lmm_stripe_count))(-1)
2581 ? -1 : lum->lmm_stripe_count);
2584 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2585 (__s16)lum->lmm_stripe_count);
2587 if (!yaml && is_dir)
2593 if (verbose & VERBOSE_STRIPE_SIZE) {
2594 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2595 if (verbose & ~VERBOSE_STRIPE_SIZE)
2596 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_size: ",
2598 if (is_dir && !is_raw && lum->lmm_stripe_size == 0) {
2600 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2603 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2605 llapi_error(LLAPI_MSG_ERROR, rc,
2606 "Cannot determine default"
2609 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2610 lum->lmm_stripe_size);
2612 if (!yaml && is_dir)
2618 if ((verbose & VERBOSE_PATTERN)) {
2619 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2620 if (verbose & ~VERBOSE_PATTERN)
2621 llapi_printf(LLAPI_MSG_NORMAL, "%s%spattern: ",
2623 if (lov_pattern_supported(lum->lmm_pattern))
2624 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2625 layout2name(lum->lmm_pattern));
2627 llapi_printf(LLAPI_MSG_NORMAL, "%x", lum->lmm_pattern);
2628 separator = (!yaml && is_dir) ? " " : "\n";
2631 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2632 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2633 if (verbose & ~VERBOSE_GENERATION)
2634 llapi_printf(LLAPI_MSG_NORMAL, "%s%slayout_gen: ",
2636 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2637 skip_objs ? 0 : (int)lum->lmm_layout_gen);
2641 if (verbose & VERBOSE_STRIPE_OFFSET) {
2642 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2643 if (verbose & ~VERBOSE_STRIPE_OFFSET)
2644 llapi_printf(LLAPI_MSG_NORMAL, "%s%sstripe_offset: ",
2646 if (is_dir || skip_objs)
2647 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2648 lum->lmm_stripe_offset ==
2649 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2650 lum->lmm_stripe_offset);
2651 else if (lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)
2652 llapi_printf(LLAPI_MSG_NORMAL, "0");
2654 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2655 objects[0].l_ost_idx);
2656 if (!yaml && is_dir)
2662 if ((verbose & VERBOSE_POOL) && pool_name && (pool_name[0] != '\0')) {
2663 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2664 if (verbose & ~VERBOSE_POOL)
2665 llapi_printf(LLAPI_MSG_NORMAL, "%s%spool: ",
2667 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2668 if (!yaml && is_dir)
2674 if (strlen(separator) != 0)
2675 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2678 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2679 struct lov_user_ost_data_v1 *objects,
2680 char *path, int obdindex, int depth,
2681 enum llapi_layout_verbose verbose,
2682 enum lov_dump_flags flags)
2684 bool is_dir = flags & LDF_IS_DIR;
2685 bool indent = flags & LDF_INDENT;
2686 bool skip_objs = flags & LDF_SKIP_OBJS;
2687 bool yaml = flags & LDF_YAML;
2688 bool obdstripe = obdindex == OBD_NOT_FOUND;
2691 if (!obdstripe && !skip_objs) {
2692 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2693 if (obdindex == objects[i].l_ost_idx) {
2703 lov_dump_user_lmm_header(lum, path, objects, verbose, depth, pool_name,
2706 if (!is_dir && !skip_objs && (verbose & VERBOSE_OBJID) &&
2707 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED ||
2708 lov_pattern(lum->lmm_pattern) == LOV_PATTERN_MDT)) {
2709 char *space = " - ";
2712 llapi_printf(LLAPI_MSG_NORMAL,
2713 "%6slmm_objects:\n", " ");
2715 llapi_printf(LLAPI_MSG_NORMAL, "lmm_objects:\n");
2717 llapi_printf(LLAPI_MSG_NORMAL,
2718 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2720 for (i = 0; i < lum->lmm_stripe_count; i++) {
2721 int idx = objects[i].l_ost_idx;
2722 long long oid = ostid_id(&objects[i].l_ost_oi);
2723 long long gr = ostid_seq(&objects[i].l_ost_oi);
2725 if (obdindex != OBD_NOT_FOUND && obdindex != idx)
2729 struct lu_fid fid = { 0 };
2731 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2732 llapi_printf(LLAPI_MSG_NORMAL,
2733 "%sl_ost_idx: %d\n", space, idx);
2734 llapi_printf(LLAPI_MSG_NORMAL,
2735 "%8sl_fid: "DFID_NOBRACE"\n",
2737 } else if (indent) {
2738 struct lu_fid fid = { 0 };
2740 ostid_to_fid(&fid, &objects[i].l_ost_oi, idx);
2741 llapi_printf(LLAPI_MSG_NORMAL,
2742 "%s%d: { l_ost_idx: %d, l_fid: "DFID" }\n",
2743 space, i, idx, PFID(&fid));
2746 sprintf(fmt, "%s%s%s\n",
2747 "\t%6u\t%14llu\t%#13llx\t",
2748 (fid_seq_is_rsvd(gr) ||
2749 fid_seq_is_mdt0(gr)) ?
2750 "%14llu" : "%#14llx", "%s");
2751 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2753 obdindex == idx ? " *" : "");
2757 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2760 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2761 char *path, int obdindex, int depth,
2762 enum llapi_layout_verbose verbose,
2763 enum lov_dump_flags flags)
2765 struct lmv_user_mds_data *objects = lum->lum_objects;
2766 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2767 char *separator = "";
2768 bool yaml = flags & LDF_YAML;
2769 bool obdstripe = false;
2772 if (obdindex != OBD_NOT_FOUND) {
2773 if (lum->lum_stripe_count == 0) {
2774 if (obdindex == lum->lum_stripe_offset)
2777 for (i = 0; i < lum->lum_stripe_count; i++) {
2778 if (obdindex == objects[i].lum_mds) {
2779 llapi_printf(LLAPI_MSG_NORMAL,
2794 /* show all information default */
2796 if (lum->lum_magic == LMV_USER_MAGIC)
2797 verbose = VERBOSE_POOL | VERBOSE_STRIPE_COUNT |
2798 VERBOSE_STRIPE_OFFSET | VERBOSE_HASH_TYPE;
2800 verbose = VERBOSE_OBJID;
2803 if (depth && path && ((verbose != VERBOSE_OBJID)))
2804 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2806 if (verbose & VERBOSE_STRIPE_COUNT) {
2807 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2808 if (verbose & ~VERBOSE_STRIPE_COUNT)
2809 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2810 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2811 (int)lum->lum_stripe_count);
2812 if ((verbose & VERBOSE_STRIPE_OFFSET) && !yaml)
2818 if (verbose & VERBOSE_STRIPE_OFFSET) {
2819 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2820 if (verbose & ~VERBOSE_STRIPE_OFFSET)
2821 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2822 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2823 (int)lum->lum_stripe_offset);
2824 if (verbose & VERBOSE_HASH_TYPE && !yaml)
2830 if (verbose & VERBOSE_HASH_TYPE) {
2831 unsigned int type = lum->lum_hash_type;
2833 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2834 if (verbose & ~VERBOSE_HASH_TYPE)
2835 llapi_printf(LLAPI_MSG_NORMAL, "lmv_hash_type: ");
2836 if (type < LMV_HASH_TYPE_MAX)
2837 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2838 mdt_hash_name[type]);
2840 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2845 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2846 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2847 if (lum->lum_stripe_count > 0)
2848 llapi_printf(LLAPI_MSG_NORMAL,
2849 "mdtidx\t\t FID[seq:oid:ver]\n");
2850 for (i = 0; i < lum->lum_stripe_count; i++) {
2851 int idx = objects[i].lum_mds;
2852 struct lu_fid *fid = &objects[i].lum_fid;
2853 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2854 llapi_printf(LLAPI_MSG_NORMAL,
2855 "%6u\t\t "DFID"\t\t%s\n",
2857 obdindex == idx ? " *" : "");
2862 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2863 pool_name[0] != '\0') {
2864 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2865 if (verbose & ~VERBOSE_POOL)
2866 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2868 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2872 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2873 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2876 static void lov_dump_comp_v1_header(struct find_param *param, char *path,
2877 enum lov_dump_flags flags)
2879 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2880 int depth = param->fp_max_depth;
2881 enum llapi_layout_verbose verbose = param->fp_verbose;
2882 bool yaml = flags & LDF_YAML;
2884 if (depth && path && ((verbose != VERBOSE_OBJID) ||
2885 !(flags & LDF_IS_DIR)) && !yaml)
2886 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2888 if (verbose & VERBOSE_DETAIL) {
2889 llapi_printf(LLAPI_MSG_NORMAL, "composite_header:\n");
2890 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_magic: 0x%08X\n",
2891 " ", comp_v1->lcm_magic);
2892 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_size: %u\n",
2893 " ", comp_v1->lcm_size);
2894 if (flags & LDF_IS_DIR)
2895 llapi_printf(LLAPI_MSG_NORMAL,
2896 "%2slcm_flags: %s\n", " ",
2897 comp_v1->lcm_mirror_count > 0 ?
2900 llapi_printf(LLAPI_MSG_NORMAL,
2901 "%2slcm_flags: %s\n", " ",
2902 llapi_layout_flags_string(comp_v1->lcm_flags));
2905 if (verbose & VERBOSE_GENERATION) {
2906 if (verbose & ~VERBOSE_GENERATION)
2907 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_layout_gen: ",
2909 llapi_printf(LLAPI_MSG_NORMAL, "%u\n", comp_v1->lcm_layout_gen);
2912 if (verbose & VERBOSE_MIRROR_COUNT) {
2913 if (verbose & ~VERBOSE_MIRROR_COUNT)
2914 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_mirror_count: ",
2916 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2917 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2918 comp_v1->lcm_mirror_count + 1 : 1);
2921 if (verbose & VERBOSE_COMP_COUNT) {
2922 if (verbose & ~VERBOSE_COMP_COUNT)
2923 llapi_printf(LLAPI_MSG_NORMAL, "%2slcm_entry_count: ",
2925 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2926 comp_v1->lcm_magic == LOV_USER_MAGIC_COMP_V1 ?
2927 comp_v1->lcm_entry_count : 0);
2930 if (verbose & VERBOSE_DETAIL && !yaml)
2931 llapi_printf(LLAPI_MSG_NORMAL, "components:\n");
2934 static void lcme_flags2str(__u32 comp_flags)
2940 llapi_printf(LLAPI_MSG_NORMAL, "0");
2943 for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
2944 if (comp_flags & comp_flags_table[i].cfn_flag) {
2946 llapi_printf(LLAPI_MSG_NORMAL, ",");
2947 llapi_printf(LLAPI_MSG_NORMAL, "%s",
2948 comp_flags_table[i].cfn_name);
2949 comp_flags &= ~comp_flags_table[i].cfn_flag;
2955 llapi_printf(LLAPI_MSG_NORMAL, ",");
2956 llapi_printf(LLAPI_MSG_NORMAL, "%#x", comp_flags);
2960 static void lov_dump_comp_v1_entry(struct find_param *param,
2961 enum lov_dump_flags flags, int index)
2963 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
2964 struct lov_comp_md_entry_v1 *entry;
2965 char *separator = "";
2966 enum llapi_layout_verbose verbose = param->fp_verbose;
2967 bool yaml = flags & LDF_YAML;
2969 entry = &comp_v1->lcm_entries[index];
2972 llapi_printf(LLAPI_MSG_NORMAL, "%2scomponent%d:\n", " ", index);
2974 if (verbose & VERBOSE_COMP_ID) {
2975 if (verbose & VERBOSE_DETAIL && !yaml)
2976 llapi_printf(LLAPI_MSG_NORMAL,
2977 "%slcme_id: ", " - ");
2978 else if (verbose & ~VERBOSE_COMP_ID)
2979 llapi_printf(LLAPI_MSG_NORMAL,
2980 "%4slcme_id: ", " ");
2981 if (entry->lcme_id != LCME_ID_INVAL)
2982 llapi_printf(LLAPI_MSG_NORMAL, "%u", entry->lcme_id);
2984 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
2988 if (verbose & VERBOSE_MIRROR_ID) {
2989 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2990 if (verbose & ~VERBOSE_MIRROR_ID)
2991 llapi_printf(LLAPI_MSG_NORMAL,
2992 "%4slcme_mirror_id: ", " ");
2993 if (entry->lcme_id != LCME_ID_INVAL)
2994 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2995 mirror_id_of(entry->lcme_id));
2997 llapi_printf(LLAPI_MSG_NORMAL, "N/A");
3001 if (verbose & VERBOSE_COMP_FLAGS) {
3002 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3003 if (verbose & ~VERBOSE_COMP_FLAGS)
3004 llapi_printf(LLAPI_MSG_NORMAL,
3005 "%4slcme_flags: ", " ");
3006 lcme_flags2str(entry->lcme_flags);
3009 /* print snapshot timestamp if its a nosync comp */
3010 if ((verbose & VERBOSE_COMP_FLAGS) &&
3011 (entry->lcme_flags & LCME_FL_NOSYNC)) {
3012 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3013 if (verbose & ~VERBOSE_COMP_FLAGS)
3014 llapi_printf(LLAPI_MSG_NORMAL,
3015 "%4slcme_timestamp: ", " ");
3017 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3018 entry->lcme_timestamp);
3020 time_t stamp = entry->lcme_timestamp;
3021 char *date_str = asctime(localtime(&stamp));
3023 date_str[strlen(date_str) - 1] = '\0';
3024 llapi_printf(LLAPI_MSG_NORMAL, "'%s'", date_str);
3030 if (verbose & VERBOSE_COMP_START) {
3031 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3032 if (verbose & ~VERBOSE_COMP_START)
3033 llapi_printf(LLAPI_MSG_NORMAL,
3034 "%4slcme_extent.e_start: ", " ");
3035 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3036 entry->lcme_extent.e_start);
3040 if (verbose & VERBOSE_COMP_END) {
3041 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3042 if (verbose & ~VERBOSE_COMP_END)
3043 llapi_printf(LLAPI_MSG_NORMAL,
3044 "%4slcme_extent.e_end: ", " ");
3045 if (entry->lcme_extent.e_end == LUSTRE_EOF)
3046 llapi_printf(LLAPI_MSG_NORMAL, "%s", "EOF");
3048 llapi_printf(LLAPI_MSG_NORMAL, "%llu",
3049 entry->lcme_extent.e_end);
3054 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3055 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3056 } else if (verbose & VERBOSE_DETAIL) {
3057 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3058 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_offset: %u\n",
3059 " ", entry->lcme_offset);
3060 llapi_printf(LLAPI_MSG_NORMAL, "%4slcme_size: %u\n",
3061 " ", entry->lcme_size);
3062 llapi_printf(LLAPI_MSG_NORMAL, "%4ssub_layout:\n", " ");
3064 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
3068 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
3069 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
3071 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
3072 * The table below gives the answers for the specified parameters (value and
3073 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
3074 * --------------------------------------
3075 * 1 | file > limit; sign > 0 | -1 / -1 |
3076 * 2 | file = limit; sign > 0 | -1 / -1 |
3077 * 3 | file < limit; sign > 0 | ? / 1 |
3078 * 4 | file > limit; sign = 0 | -1 / -1 |
3079 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
3080 * 6 | file < limit; sign = 0 | ? / -1 |
3081 * 7 | file > limit; sign < 0 | 1 / 1 |
3082 * 8 | file = limit; sign < 0 | ? / -1 |
3083 * 9 | file < limit; sign < 0 | ? / -1 |
3084 * --------------------------------------
3085 * Note: 5th actually means that the value is within the interval
3086 * (limit - margin, limit]. */
3087 static int find_value_cmp(unsigned long long file, unsigned long long limit,
3088 int sign, int negopt, unsigned long long margin,
3094 /* Drop the fraction of margin (of days). */
3095 if (file + margin <= limit)
3097 } else if (sign == 0) {
3098 if (file <= limit && file + margin > limit)
3100 else if (file + margin <= limit)
3102 } else if (sign < 0) {
3109 return negopt ? ~ret + 1 : ret;
3112 static inline struct lov_user_md *
3113 lov_comp_entry(struct lov_comp_md_v1 *comp_v1, int ent_idx)
3115 return (struct lov_user_md *)((char *)comp_v1 +
3116 comp_v1->lcm_entries[ent_idx].lcme_offset);
3119 static inline struct lov_user_ost_data_v1 *
3120 lov_v1v3_objects(struct lov_user_md *v1)
3122 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3123 return ((struct lov_user_md_v3 *)v1)->lmm_objects;
3125 return v1->lmm_objects;
3129 lov_v1v3_pool_name(struct lov_user_md *v1, char *pool_name)
3131 if (v1->lmm_magic == LOV_USER_MAGIC_V3)
3132 snprintf(pool_name, LOV_MAXPOOLNAME, "%s",
3133 ((struct lov_user_md_v3 *)v1)->lmm_pool_name);
3135 pool_name[0] = '\0';
3139 print_last_init_comp(struct find_param *param)
3141 /* print all component info */
3142 if ((param->fp_verbose & VERBOSE_DEFAULT) == VERBOSE_DEFAULT)
3145 /* print specific component info */
3146 if (param->fp_check_comp_id || param->fp_check_comp_flags ||
3147 param->fp_check_comp_start || param->fp_check_comp_end ||
3148 param->fp_check_mirror_id || param->fp_check_mirror_index)
3154 static int find_comp_end_cmp(unsigned long long end, struct find_param *param)
3158 if (param->fp_comp_end == LUSTRE_EOF) {
3159 if (param->fp_comp_end_sign == 0) /* equal to EOF */
3160 match = end == LUSTRE_EOF ? 1 : -1;
3161 else if (param->fp_comp_end_sign > 0) /* at most EOF */
3162 match = end == LUSTRE_EOF ? -1 : 1;
3163 else /* at least EOF */
3165 if (param->fp_exclude_comp_end)
3168 unsigned long long margin;
3170 margin = end == LUSTRE_EOF ? 0 : param->fp_comp_end_units;
3171 match = find_value_cmp(end, param->fp_comp_end,
3172 param->fp_comp_end_sign,
3173 param->fp_exclude_comp_end, margin, 0);
3180 * An example of "getstripe -v" for a two components PFL file:
3183 * lcm_magic: 0x0BD60BD0
3187 * lcm_entry_count: 2
3191 * lcme_extent.e_start: 0
3192 * lcme_extent.e_end: 1048576
3196 * lmm_magic: 0x0BD10BD0
3197 * lmm_seq: 0x200000401
3198 * lmm_object_id: 0x1
3199 * lmm_fid: [0x200000401:0x1:0x0]
3200 * lmm_stripe_count: 1
3201 * lmm_stripe_size: 1048576
3202 * lmm_pattern: raid0
3204 * lmm_stripe_offset: 0
3206 * - 0: { l_ost_idx: 0, l_fid: [0x100000000:0x2:0x0] }
3210 * lcme_extent.e_start: 1048576
3211 * lcme_extent.e_end: EOF
3215 * lmm_magic: 0x0BD10BD0
3216 * lmm_seq: 0x200000401
3217 * lmm_object_id: 0x1
3218 * lmm_fid: [0x200000401:0x1:0x0]
3219 * lmm_stripe_count: 2
3220 * lmm_stripe_size: 1048576
3221 * lmm_pattern: raid0
3223 * lmm_stripe_offset: 1
3225 * - 0: { l_ost_idx: 1, l_fid: [0x100010000:0x2:0x0] }
3226 * - 1: { l_ost_idx: 0, l_fid: [0x100000000:0x3:0x0] }
3228 static void lov_dump_comp_v1(struct find_param *param, char *path,
3229 enum lov_dump_flags flags)
3231 struct lov_comp_md_entry_v1 *entry;
3232 struct lov_user_ost_data_v1 *objects;
3233 struct lov_comp_md_v1 *comp_v1 = (void *)¶m->fp_lmd->lmd_lmm;
3234 struct lov_user_md_v1 *v1;
3235 char pool_name[LOV_MAXPOOLNAME + 1];
3236 int obdindex = param->fp_obd_index;
3238 bool obdstripe = false;
3239 __u16 mirror_index = 0;
3240 __u16 mirror_id = 0;
3242 if (obdindex != OBD_NOT_FOUND) {
3243 for (i = 0; !(flags & LDF_IS_DIR) && !obdstripe &&
3244 i < comp_v1->lcm_entry_count; i++) {
3245 if (!(comp_v1->lcm_entries[i].lcme_flags &
3249 v1 = lov_comp_entry(comp_v1, i);
3250 objects = lov_v1v3_objects(v1);
3252 for (j = 0; j < v1->lmm_stripe_count; j++) {
3253 if (obdindex == objects[j].l_ost_idx) {
3266 lov_dump_comp_v1_header(param, path, flags);
3268 flags |= LDF_INDENT;
3270 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3271 entry = &comp_v1->lcm_entries[i];
3273 if (param->fp_check_comp_flags) {
3274 if (((param->fp_comp_flags & entry->lcme_flags) !=
3275 param->fp_comp_flags) ||
3276 (param->fp_comp_neg_flags & entry->lcme_flags))
3280 if (param->fp_check_comp_id &&
3281 param->fp_comp_id != entry->lcme_id)
3284 if (param->fp_check_comp_start) {
3285 match = find_value_cmp(entry->lcme_extent.e_start,
3286 param->fp_comp_start,
3287 param->fp_comp_start_sign,
3289 param->fp_comp_start_units, 0);
3294 if (param->fp_check_comp_end) {
3295 match = find_comp_end_cmp(entry->lcme_extent.e_end,
3301 if (param->fp_check_mirror_index) {
3302 if (mirror_id != mirror_id_of(entry->lcme_id)) {
3304 mirror_id = mirror_id_of(entry->lcme_id);
3307 match = find_value_cmp(mirror_index,
3308 param->fp_mirror_index,
3309 param->fp_mirror_index_sign,
3310 param->fp_exclude_mirror_index,
3314 } else if (param->fp_check_mirror_id) {
3315 if (mirror_id != mirror_id_of(entry->lcme_id))
3316 mirror_id = mirror_id_of(entry->lcme_id);
3318 match = find_value_cmp(mirror_id,
3319 param->fp_mirror_id,
3320 param->fp_mirror_id_sign,
3321 param->fp_exclude_mirror_id,
3327 if (print_last_init_comp(param)) {
3329 * if part of stripe info is needed, we'd print only
3330 * the last instantiated component info.
3332 if (entry->lcme_flags & LCME_FL_INIT)
3338 if (entry->lcme_flags & LCME_FL_INIT) {
3339 if (obdindex != OBD_NOT_FOUND) {
3340 flags |= LDF_SKIP_OBJS;
3341 v1 = lov_comp_entry(comp_v1, i);
3342 objects = lov_v1v3_objects(v1);
3344 for (j = 0; j < v1->lmm_stripe_count; j++) {
3345 if (obdindex == objects[j].l_ost_idx) {
3346 flags &= ~LDF_SKIP_OBJS;
3351 flags &= ~LDF_SKIP_OBJS;
3354 flags |= LDF_SKIP_OBJS;
3357 if (obdindex != OBD_NOT_FOUND && (flags & LDF_SKIP_OBJS))
3359 lov_dump_comp_v1_entry(param, flags, i);
3361 v1 = lov_comp_entry(comp_v1, i);
3362 objects = lov_v1v3_objects(v1);
3363 lov_v1v3_pool_name(v1, pool_name);
3365 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3366 param->fp_max_depth, param->fp_verbose,
3369 if (print_last_init_comp(param)) {
3371 * directory layout contains only layout template, print the
3375 i = comp_v1->lcm_entry_count - 1;
3378 flags &= ~LDF_SKIP_OBJS;
3380 lov_dump_comp_v1_entry(param, flags, i);
3382 v1 = lov_comp_entry(comp_v1, i);
3383 objects = lov_v1v3_objects(v1);
3384 lov_v1v3_pool_name(v1, pool_name);
3386 lov_dump_user_lmm_v1v3(v1, pool_name, objects, path, obdindex,
3387 param->fp_max_depth, param->fp_verbose,
3392 #define VERBOSE_COMP_OPTS (VERBOSE_COMP_COUNT | VERBOSE_COMP_ID | \
3393 VERBOSE_COMP_START | VERBOSE_COMP_END | \
3396 static inline bool has_any_comp_options(struct find_param *param)
3398 enum llapi_layout_verbose verbose = param->fp_verbose;
3400 if (param->fp_check_comp_id || param->fp_check_comp_count ||
3401 param->fp_check_comp_start || param->fp_check_comp_end ||
3402 param->fp_check_comp_flags)
3405 /* show full layout information, not component specific */
3406 if ((verbose & ~VERBOSE_DETAIL) == VERBOSE_DEFAULT)
3409 return verbose & VERBOSE_COMP_OPTS;
3412 struct lov_user_mds_data *lov_forge_comp_v1(struct lov_user_mds_data *orig,
3415 struct lov_user_md *lum = &orig->lmd_lmm;
3416 struct lov_user_mds_data *new;
3417 struct lov_comp_md_v1 *comp_v1;
3418 struct lov_comp_md_entry_v1 *ent;
3419 int lum_off = sizeof(*comp_v1) + sizeof(*ent);
3420 int lum_size = lov_user_md_size(is_dir ? 0 : lum->lmm_stripe_count,
3423 new = malloc(sizeof(lstat_t) + lum_off + lum_size);
3425 llapi_printf(LLAPI_MSG_NORMAL, "out of memory\n");
3429 memcpy(new, orig, sizeof(lstat_t));
3431 comp_v1 = (struct lov_comp_md_v1 *)&new->lmd_lmm;
3432 comp_v1->lcm_magic = lum->lmm_magic;
3433 comp_v1->lcm_size = lum_off + lum_size;
3434 comp_v1->lcm_layout_gen = is_dir ? 0 : lum->lmm_layout_gen;
3435 comp_v1->lcm_flags = 0;
3436 comp_v1->lcm_entry_count = 1;
3438 ent = &comp_v1->lcm_entries[0];
3440 ent->lcme_flags = is_dir ? 0 : LCME_FL_INIT;
3441 ent->lcme_extent.e_start = 0;
3442 ent->lcme_extent.e_end = LUSTRE_EOF;
3443 ent->lcme_offset = lum_off;
3444 ent->lcme_size = lum_size;
3446 memcpy((char *)comp_v1 + lum_off, lum, lum_size);
3451 static void lov_dump_plain_user_lmm(struct find_param *param, char *path,
3452 enum lov_dump_flags flags)
3454 __u32 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm;
3456 if (has_any_comp_options(param)) {
3457 struct lov_user_mds_data *new_lmd, *orig_lmd;
3459 orig_lmd = param->fp_lmd;
3460 new_lmd = lov_forge_comp_v1(orig_lmd, flags & LDF_IS_DIR);
3461 if (new_lmd != NULL) {
3462 param->fp_lmd = new_lmd;
3463 lov_dump_comp_v1(param, path, flags);
3464 param->fp_lmd = orig_lmd;
3470 if (magic == LOV_USER_MAGIC_V1) {
3471 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
3472 param->fp_lmd->lmd_lmm.lmm_objects,
3473 path, param->fp_obd_index,
3474 param->fp_max_depth, param->fp_verbose,
3477 char pool_name[LOV_MAXPOOLNAME + 1];
3478 struct lov_user_ost_data_v1 *objects;
3479 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3481 snprintf(pool_name, sizeof(pool_name), "%s",
3482 lmmv3->lmm_pool_name);
3483 objects = lmmv3->lmm_objects;
3484 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, pool_name,
3485 objects, path, param->fp_obd_index,
3486 param->fp_max_depth, param->fp_verbose,
3491 static void llapi_lov_dump_user_lmm(struct find_param *param, char *path,
3492 enum lov_dump_flags flags)
3496 if (param->fp_get_lmv || param->fp_get_default_lmv)
3497 magic = (__u32)param->fp_lmv_md->lum_magic;
3499 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
3502 flags |= LDF_IS_RAW;
3507 case LOV_USER_MAGIC_V1:
3508 case LOV_USER_MAGIC_V3:
3509 case LOV_USER_MAGIC_SPECIFIC:
3510 lov_dump_plain_user_lmm(param, path, flags);
3513 case LMV_USER_MAGIC: {
3514 char pool_name[LOV_MAXPOOLNAME + 1];
3515 struct lmv_user_md *lum;
3517 lum = (struct lmv_user_md *)param->fp_lmv_md;
3518 snprintf(pool_name, sizeof(pool_name), "%s",
3519 lum->lum_pool_name);
3520 lmv_dump_user_lmm(lum, pool_name, path, param->fp_obd_index,
3521 param->fp_max_depth, param->fp_verbose,
3525 case LOV_USER_MAGIC_COMP_V1:
3526 lov_dump_comp_v1(param, path, flags);
3529 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
3530 "(expecting one of %#x %#x %#x %#x)\n",
3531 *(__u32 *)¶m->fp_lmd->lmd_lmm,
3532 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
3533 LMV_USER_MAGIC, LMV_MAGIC_V1);
3538 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
3544 fname = strrchr(path, '/');
3546 /* It should be a file (or other non-directory) */
3547 if (fname == NULL) {
3548 dname = (char *)malloc(2);
3552 fname = (char *)path;
3554 dname = (char *)malloc(fname - path + 1);
3557 strncpy(dname, path, fname - path);
3558 dname[fname - path] = '\0';
3562 fd = open(dname, O_RDONLY | O_NONBLOCK);
3569 strcpy((char *)lum, fname);
3570 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
3573 if (close(fd) == -1 && rc == 0)
3580 int llapi_file_lookup(int dirfd, const char *name)
3582 struct obd_ioctl_data data = { 0 };
3587 if (dirfd < 0 || name == NULL)
3590 data.ioc_version = OBD_IOCTL_VERSION;
3591 data.ioc_len = sizeof(data);
3592 data.ioc_inlbuf1 = (char *)name;
3593 data.ioc_inllen1 = strlen(name) + 1;
3595 rc = llapi_ioctl_pack(&data, &buf, sizeof(rawbuf));
3597 llapi_error(LLAPI_MSG_ERROR, rc,
3598 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
3603 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
3609 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
3610 * Return -1 or 1 if file timestamp does not or does match the given criteria
3611 * correspondingly. Return 0 if the MDS time is being checked and there are
3612 * attributes on OSTs and it is not yet clear if the timespamp matches.
3614 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
3615 * updated timestamps. */
3616 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
3621 /* Check if file is accepted. */
3622 if (param->fp_atime) {
3623 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
3624 param->fp_asign, param->fp_exclude_atime,
3631 if (param->fp_mtime) {
3632 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
3633 param->fp_msign, param->fp_exclude_mtime,
3638 /* If the previous check matches, but this one is not yet clear,
3639 * we should return 0 to do an RPC on OSTs. */
3644 if (param->fp_ctime) {
3645 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
3646 param->fp_csign, param->fp_exclude_ctime,
3651 /* If the previous check matches, but this one is not yet clear,
3652 * we should return 0 to do an RPC on OSTs. */
3661 * Check whether the stripes matches the indexes user provided
3665 static int check_obd_match(struct find_param *param)
3667 struct lov_user_ost_data_v1 *objects;
3668 struct lov_comp_md_v1 *comp_v1 = NULL;
3669 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3670 lstat_t *st = ¶m->fp_lmd->lmd_st;
3671 int i, j, k, count = 1;
3673 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
3676 if (!S_ISREG(st->st_mode))
3679 /* Only those files should be accepted, which have a
3680 * stripe on the specified OST. */
3681 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3682 comp_v1 = (struct lov_comp_md_v1 *)v1;
3683 count = comp_v1->lcm_entry_count;
3686 for (i = 0; i < count; i++) {
3688 v1 = lov_comp_entry(comp_v1, i);
3690 objects = lov_v1v3_objects(v1);
3692 for (j = 0; j < v1->lmm_stripe_count; j++) {
3693 if (comp_v1 && !(comp_v1->lcm_entries[i].lcme_flags &
3696 for (k = 0; k < param->fp_num_obds; k++) {
3697 if (param->fp_obd_indexes[k] ==
3698 objects[j].l_ost_idx)
3699 return !param->fp_exclude_obd;
3704 return param->fp_exclude_obd;
3707 static int check_mdt_match(struct find_param *param)
3711 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
3714 /* FIXME: For striped dir, we should get stripe information and check */
3715 for (i = 0; i < param->fp_num_mdts; i++) {
3716 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
3717 return !param->fp_exclude_mdt;
3720 if (param->fp_exclude_mdt)
3727 * Check whether the obd is active or not, if it is
3728 * not active, just print the object affected by this
3731 static int print_failed_tgt(struct find_param *param, char *path, int type)
3733 struct obd_statfs stat_buf;
3734 struct obd_uuid uuid_buf;
3737 if (type != LL_STATFS_LOV && type != LL_STATFS_LMV)
3740 memset(&stat_buf, 0, sizeof(struct obd_statfs));
3741 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
3742 ret = llapi_obd_statfs(path, type,
3743 param->fp_obd_index, &stat_buf,
3746 llapi_printf(LLAPI_MSG_NORMAL,
3747 "obd_uuid: %s failed %s ",
3748 param->fp_obd_uuid->uuid,
3755 static int find_check_stripe_size(struct find_param *param)
3757 struct lov_comp_md_v1 *comp_v1 = NULL;
3758 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3759 int ret, i, count = 1;
3761 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3762 comp_v1 = (struct lov_comp_md_v1 *)v1;
3763 count = comp_v1->lcm_entry_count;
3764 ret = param->fp_exclude_stripe_size ? 1 : -1;
3767 for (i = 0; i < count; i++) {
3769 v1 = lov_comp_entry(comp_v1, i);
3771 ret = find_value_cmp(v1->lmm_stripe_size, param->fp_stripe_size,
3772 param->fp_stripe_size_sign,
3773 param->fp_exclude_stripe_size,
3774 param->fp_stripe_size_units, 0);
3775 /* If any stripe_size matches */
3783 static __u32 find_get_stripe_count(struct find_param *param)
3785 struct lov_comp_md_v1 *comp_v1 = NULL;
3786 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3788 __u32 stripe_count = 0;
3790 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3791 comp_v1 = (struct lov_comp_md_v1 *)v1;
3792 count = comp_v1->lcm_entry_count;
3795 for (i = 0; i < count; i++) {
3797 v1 = lov_comp_entry(comp_v1, i);
3798 stripe_count += v1->lmm_stripe_count;
3801 return stripe_count;
3804 #define LOV_PATTERN_INVALID 0xFFFFFFFF
3806 static int find_check_layout(struct find_param *param)
3808 struct lov_comp_md_v1 *comp_v1 = NULL;
3809 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3811 bool found = false, valid = false;
3813 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3814 comp_v1 = (struct lov_comp_md_v1 *)v1;
3815 count = comp_v1->lcm_entry_count;
3818 for (i = 0; i < count; i++) {
3820 v1 = lov_comp_entry(comp_v1, i);
3822 if (v1->lmm_pattern == LOV_PATTERN_INVALID)
3826 if (v1->lmm_pattern & param->fp_layout) {
3835 if ((found && !param->fp_exclude_layout) ||
3836 (!found && param->fp_exclude_layout))
3842 static int find_check_pool(struct find_param *param)
3844 struct lov_comp_md_v1 *comp_v1 = NULL;
3845 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3846 struct lov_user_md_v3 *v3 = (void *)v1;
3850 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3851 comp_v1 = (struct lov_comp_md_v1 *)v1;
3852 count = comp_v1->lcm_entry_count;
3853 /* empty requested pool is taken as no pool search */
3854 if (count == 0 && param->fp_poolname[0] == '\0')
3858 for (i = 0; i < count; i++) {
3859 if (comp_v1 != NULL)
3860 v1 = lov_comp_entry(comp_v1, i);
3862 if (((v1->lmm_magic == LOV_USER_MAGIC_V1) &&
3863 (param->fp_poolname[0] == '\0')) ||
3864 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3865 (strncmp(v3->lmm_pool_name,
3866 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3867 ((v1->lmm_magic == LOV_USER_MAGIC_V3) &&
3868 (strcmp(param->fp_poolname, "*") == 0))) {
3874 if ((found && !param->fp_exclude_pool) ||
3875 (!found && param->fp_exclude_pool))
3881 static int find_check_comp_options(struct find_param *param)
3883 lstat_t *st = ¶m->fp_lmd->lmd_st;
3884 struct lov_comp_md_v1 *comp_v1, *forged_v1 = NULL;
3885 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3886 struct lov_comp_md_entry_v1 *entry;
3889 if (v1->lmm_magic == LOV_USER_MAGIC_COMP_V1) {
3890 comp_v1 = (struct lov_comp_md_v1 *)v1;
3892 forged_v1 = malloc(sizeof(*forged_v1) + sizeof(*entry));
3893 if (forged_v1 == NULL)
3895 comp_v1 = forged_v1;
3896 comp_v1->lcm_entry_count = 1;
3897 entry = &comp_v1->lcm_entries[0];
3898 entry->lcme_flags = S_ISDIR(st->st_mode) ? 0 : LCME_FL_INIT;
3899 entry->lcme_extent.e_start = 0;
3900 entry->lcme_extent.e_end = LUSTRE_EOF;
3903 /* invalid case, don't match for any kind of search. */
3904 if (comp_v1->lcm_entry_count == 0) {
3909 if (param->fp_check_comp_count) {
3910 ret = find_value_cmp(forged_v1 ? 0 : comp_v1->lcm_entry_count,
3911 param->fp_comp_count,
3912 param->fp_comp_count_sign,
3913 param->fp_exclude_comp_count, 1, 0);
3919 for (i = 0; i < comp_v1->lcm_entry_count; i++) {
3920 entry = &comp_v1->lcm_entries[i];
3922 if (param->fp_check_comp_flags) {
3924 if (((param->fp_comp_flags & entry->lcme_flags) !=
3925 param->fp_comp_flags) ||
3926 (param->fp_comp_neg_flags & entry->lcme_flags)) {
3932 if (param->fp_check_comp_start) {
3933 ret = find_value_cmp(entry->lcme_extent.e_start,
3934 param->fp_comp_start,
3935 param->fp_comp_start_sign,
3936 param->fp_exclude_comp_start,
3937 param->fp_comp_start_units, 0);
3942 if (param->fp_check_comp_end) {
3943 ret = find_comp_end_cmp(entry->lcme_extent.e_end,
3949 /* the component matches all criteria */
3953 if (forged_v1 != NULL)
3958 static int find_check_mirror_options(struct find_param *param)
3960 struct lov_comp_md_v1 *comp_v1;
3961 struct lov_user_md_v1 *v1 = ¶m->fp_lmd->lmd_lmm;
3964 if (v1->lmm_magic != LOV_USER_MAGIC_COMP_V1)
3967 comp_v1 = (struct lov_comp_md_v1 *)v1;
3969 if (param->fp_check_mirror_count) {
3970 ret = find_value_cmp(comp_v1->lcm_mirror_count + 1,
3971 param->fp_mirror_count,
3972 param->fp_mirror_count_sign,
3973 param->fp_exclude_mirror_count, 1, 0);
3978 if (param->fp_check_mirror_state) {
3980 __u16 file_state = comp_v1->lcm_flags & LCM_FL_FLR_MASK;
3982 if ((param->fp_mirror_state != 0 &&
3983 file_state != param->fp_mirror_state) ||
3984 file_state == param->fp_mirror_neg_state)
3991 static bool find_check_lmm_info(struct find_param *param)
3993 return param->fp_check_pool || param->fp_check_stripe_count ||
3994 param->fp_check_stripe_size || param->fp_check_layout ||
3995 param->fp_check_comp_count || param->fp_check_comp_end ||
3996 param->fp_check_comp_start || param->fp_check_comp_flags ||
3997 param->fp_check_mirror_count ||
3998 param->fp_check_mirror_state ||
3999 param->fp_check_projid;
4003 * Get file/directory project id.
4004 * by the open fd resides on.
4005 * Return 0 and project id on success, or -ve errno.
4007 static int fget_projid(int fd, int *projid)
4012 rc = ioctl(fd, LL_IOC_FSGETXATTR, &fsx);
4016 *projid = fsx.fsx_projid;
4020 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
4021 void *data, struct dirent64 *de)
4023 struct find_param *param = (struct find_param *)data;
4024 DIR *dir = dirp == NULL ? NULL : *dirp;
4025 int decision = 1; /* 1 is accepted; -1 is rejected. */
4026 lstat_t *st = ¶m->fp_lmd->lmd_st;
4028 int checked_type = 0;
4030 __u32 stripe_count = 0;
4033 if (parent == NULL && dir == NULL)
4036 /* If a regular expression is presented, make the initial decision */
4037 if (param->fp_pattern != NULL) {
4038 char *fname = strrchr(path, '/');
4039 fname = (fname == NULL ? path : fname + 1);
4040 ret = fnmatch(param->fp_pattern, fname, 0);
4041 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
4042 (ret == 0 && param->fp_exclude_pattern))
4046 /* See if we can check the file type from the dirent. */
4047 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
4050 if (DTTOIF(de->d_type) == param->fp_type) {
4051 if (param->fp_exclude_type)
4054 if (!param->fp_exclude_type)
4061 /* Request MDS for the stat info if some of these parameters need
4062 * to be compared. */
4063 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
4064 param->fp_check_uid || param->fp_check_gid ||
4065 param->fp_atime || param->fp_mtime || param->fp_ctime ||
4066 param->fp_check_size || param->fp_check_blocks ||
4067 find_check_lmm_info(param) ||
4068 param->fp_check_mdt_count || param->fp_check_hash_type)
4071 if (param->fp_type != 0 && checked_type == 0)
4074 if (decision == 0) {
4075 if (param->fp_check_mdt_count || param->fp_check_hash_type) {
4076 param->fp_get_lmv = 1;
4077 ret = cb_get_dirstripe(path, dir, param);
4082 param->fp_lmd->lmd_lmm.lmm_magic = 0;
4083 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
4084 param->fp_lum_size, GET_LMD_INFO);
4085 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
4086 find_check_lmm_info(param)) {
4087 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
4089 /* We need to "fake" the "use the default" values
4090 * since the lmm struct is zeroed out at this point. */
4091 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4092 lmm->lmm_pattern = LOV_PATTERN_DEFAULT;
4094 ostid_set_seq(&lmm->lmm_oi,
4095 FID_SEQ_LOV_DEFAULT);
4096 lmm->lmm_stripe_size = 0;
4097 lmm->lmm_stripe_count = 0;
4098 lmm->lmm_stripe_offset = -1;
4100 if (ret == 0 && param->fp_mdt_uuid != NULL) {
4102 ret = llapi_file_fget_mdtidx(dirfd(dir),
4103 ¶m->fp_file_mdt_index);
4104 } else if (S_ISREG(st->st_mode)) {
4105 /* FIXME: we could get the MDT index from the
4106 * file's FID in lmd->lmd_lmm.lmm_oi without
4107 * opening the file, once we are sure that
4108 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
4109 * That would still be an ioctl() to map the
4110 * FID to the MDT, but not an open RPC. */
4111 fd = open(path, O_RDONLY);
4113 ret = llapi_file_fget_mdtidx(fd,
4114 ¶m->fp_file_mdt_index);
4119 /* For a special file, we assume it resides on
4120 * the same MDT as the parent directory. */
4121 ret = llapi_file_fget_mdtidx(dirfd(parent),
4122 ¶m->fp_file_mdt_index);
4133 stripe_count = find_get_stripe_count(param);
4137 if (param->fp_type && !checked_type) {
4138 if ((st->st_mode & S_IFMT) == param->fp_type) {
4139 if (param->fp_exclude_type)
4142 if (!param->fp_exclude_type)
4148 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
4149 if (lustre_fs && param->fp_got_uuids &&
4150 param->fp_dev != st->st_dev) {
4151 /* A lustre/lustre mount point is crossed. */
4152 param->fp_got_uuids = 0;
4153 param->fp_obds_printed = 0;
4154 param->fp_mdt_index = OBD_NOT_FOUND;
4155 param->fp_obd_index = OBD_NOT_FOUND;
4158 if (lustre_fs && !param->fp_got_uuids) {
4159 ret = setup_target_indexes(dir ? dir : parent, path,
4164 param->fp_dev = st->st_dev;
4165 } else if (!lustre_fs && param->fp_got_uuids) {
4166 /* A lustre/non-lustre mount point is crossed. */
4167 param->fp_got_uuids = 0;
4168 param->fp_mdt_index = OBD_NOT_FOUND;
4169 param->fp_obd_index = OBD_NOT_FOUND;
4173 if (param->fp_check_stripe_size) {
4174 decision = find_check_stripe_size(param);
4179 if (param->fp_check_stripe_count) {
4180 decision = find_value_cmp(stripe_count, param->fp_stripe_count,
4181 param->fp_stripe_count_sign,
4182 param->fp_exclude_stripe_count, 1, 0);
4187 if (param->fp_check_mdt_count) {
4188 decision = find_value_cmp(
4189 param->fp_lmv_md->lum_stripe_count,
4190 param->fp_mdt_count,
4191 param->fp_mdt_count_sign,
4192 param->fp_exclude_mdt_count, 1, 0);
4197 if (param->fp_check_layout) {
4198 decision = find_check_layout(param);
4203 if (param->fp_check_hash_type) {
4206 found = param->fp_lmv_md->lum_hash_type & param->fp_hash_type;
4207 if ((found && param->fp_exclude_hash_type) ||
4208 (!found && !param->fp_exclude_hash_type)) {
4214 /* If an OBD UUID is specified but none matches, skip this file. */
4215 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
4216 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
4219 /* If an OST or MDT UUID is given, and some OST matches,
4221 if (param->fp_obd_index != OBD_NOT_FOUND ||
4222 param->fp_mdt_index != OBD_NOT_FOUND) {
4223 if (param->fp_obd_uuid) {
4224 if (check_obd_match(param)) {
4225 /* If no mdtuuid is given, we are done.
4226 * Otherwise, fall through to the mdtuuid
4228 if (!param->fp_mdt_uuid)
4235 if (param->fp_mdt_uuid) {
4236 if (check_mdt_match(param))
4243 if (param->fp_check_uid) {
4244 if (st->st_uid == param->fp_uid) {
4245 if (param->fp_exclude_uid)
4248 if (!param->fp_exclude_uid)
4253 if (param->fp_check_gid) {
4254 if (st->st_gid == param->fp_gid) {
4255 if (param->fp_exclude_gid)
4258 if (!param->fp_exclude_gid)
4263 if (param->fp_check_projid) {
4267 fd = open(path, O_RDONLY);
4270 ret = fget_projid(fd, &projid);
4275 if (projid == param->fp_projid) {
4276 if (param->fp_exclude_uid)
4279 if (!param->fp_exclude_projid)
4284 if (param->fp_check_pool) {
4285 decision = find_check_pool(param);
4290 if (param->fp_check_comp_count || param->fp_check_comp_flags ||
4291 param->fp_check_comp_start || param->fp_check_comp_end) {
4292 decision = find_check_comp_options(param);
4297 if (param->fp_check_mirror_count || param->fp_check_mirror_state) {
4298 decision = find_check_mirror_options(param);
4303 /* Check the time on mds. */
4305 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
4308 for_mds = lustre_fs ?
4309 (S_ISREG(st->st_mode) && stripe_count) : 0;
4310 decision = find_time_check(st, param, for_mds);
4315 /* If file still fits the request, ask ost for updated info.
4316 The regular stat is almost of the same speed as some new
4317 'glimpse-size-ioctl'. */
4319 if ((param->fp_check_size || param->fp_check_blocks) &&
4320 ((S_ISREG(st->st_mode) && stripe_count) || S_ISDIR(st->st_mode)))
4324 /* For regular files with the stripe the decision may have not
4325 * been taken yet if *time or size is to be checked. */
4326 if (param->fp_obd_index != OBD_NOT_FOUND)
4327 print_failed_tgt(param, path, LL_STATFS_LOV);
4329 if (param->fp_mdt_index != OBD_NOT_FOUND)
4330 print_failed_tgt(param, path, LL_STATFS_LMV);
4333 ret = fstat_f(dirfd(dir), st);
4334 else if (de != NULL)
4335 ret = fstatat_f(dirfd(parent), de->d_name, st,
4336 AT_SYMLINK_NOFOLLOW);
4338 ret = lstat_f(path, st);
4341 if (errno == ENOENT) {
4342 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
4343 "warning: %s: %s does not exist",
4348 llapi_error(LLAPI_MSG_ERROR, ret,
4349 "%s: IOC_LOV_GETINFO on %s failed",
4355 /* Check the time on osc. */
4356 decision = find_time_check(st, param, 0);
4361 if (param->fp_check_size) {
4362 decision = find_value_cmp(st->st_size, param->fp_size,
4363 param->fp_size_sign,
4364 param->fp_exclude_size,
4365 param->fp_size_units, 0);
4370 if (param->fp_check_blocks) { /* convert st_blocks to bytes */
4371 decision = find_value_cmp(st->st_blocks * 512, param->fp_blocks,
4372 param->fp_blocks_sign,
4373 param->fp_exclude_blocks,
4374 param->fp_blocks_units, 0);
4379 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
4380 if (param->fp_zero_end)
4381 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
4383 llapi_printf(LLAPI_MSG_NORMAL, "\n");
4387 /* Do not get down anymore? */
4388 if (param->fp_depth == param->fp_max_depth) {
4399 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
4400 void *param_data, struct dirent64 *de)
4402 struct find_param *param = (struct find_param *)param_data;
4403 struct lmv_user_md *lmu = param->fp_lmv_md;
4404 DIR *tmp_parent = parent;
4405 char raw[MAX_IOC_BUFLEN] = {'\0'};
4407 struct obd_ioctl_data data = { 0 };
4414 if (parent == NULL && dirp == NULL)
4423 if (parent == NULL) {
4424 tmp_parent = opendir_parent(path);
4425 if (tmp_parent == NULL) {
4428 llapi_error(LLAPI_MSG_ERROR, ret,
4429 "can not open %s", path);
4434 fd = dirfd(tmp_parent);
4436 path_copy = strdup(path);
4437 filename = basename(path_copy);
4439 data.ioc_inlbuf1 = (char *)filename;
4440 data.ioc_inllen1 = strlen(filename) + 1;
4441 data.ioc_inlbuf2 = (char *)lmu;
4442 data.ioc_inllen2 = lmv_user_md_size(lmu->lum_stripe_count,
4444 ret = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4446 llapi_error(LLAPI_MSG_ERROR, ret,
4447 "llapi_obd_statfs: error packing ioctl data");
4452 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
4454 if (errno == EBUSY && !retry) {
4455 /* because migrate may not be able to lock all involved
4456 * objects in order, for some of them it try lock, while
4457 * there may be conflicting COS locks and cause migrate
4458 * fail with EBUSY, hope a sync() could cause
4459 * transaction commit and release these COS locks. */
4463 } else if (errno == EALREADY) {
4464 if (param->fp_verbose & VERBOSE_DETAIL)
4466 "%s was migrated to MDT%d already\n",
4467 path, lmu->lum_stripe_offset);
4471 fprintf(stderr, "%s migrate failed: %s (%d)\n",
4472 path, strerror(-ret), ret);
4475 } else if (param->fp_verbose & VERBOSE_DETAIL) {
4476 fprintf(stdout, "migrate %s to MDT%d stripe count %d\n",
4477 path, lmu->lum_stripe_offset, lmu->lum_stripe_count);
4482 /* If the directory is being migration, we need
4483 * close the directory after migration,
4484 * so the old directory cache will be cleanup
4485 * on the client side, and re-open to get the
4486 * new directory handle */
4487 *dirp = opendir(path);
4488 if (*dirp == NULL) {
4490 llapi_error(LLAPI_MSG_ERROR, ret,
4491 "%s: Failed to open '%s'", __func__, path);
4496 closedir(tmp_parent);
4503 /* dir migration finished, shrink its stripes */
4504 static int cb_migrate_mdt_fini(char *path, DIR *parent, DIR **dirp, void *data,
4505 struct dirent64 *de)
4507 struct find_param *param = data;
4508 struct lmv_user_md *lmu = param->fp_lmv_md;
4509 int lmulen = lmv_user_md_size(lmu->lum_stripe_count, lmu->lum_magic);
4512 if (de && de->d_type != DT_DIR)
4517 * close it before setxattr because the latter may destroy the
4518 * original object, and cause close fail.
4520 ret = closedir(*dirp);
4526 ret = setxattr(path, XATTR_NAME_LMV, lmu, lmulen, 0);
4527 if (ret == -EALREADY)
4530 cb_common_fini(path, parent, dirp, data, de);
4534 int llapi_migrate_mdt(char *path, struct find_param *param)
4536 return param_callback(path, cb_migrate_mdt_init, cb_migrate_mdt_fini,
4540 int llapi_mv(char *path, struct find_param *param)
4542 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 59, 0)
4543 static bool printed;
4546 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
4547 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
4551 return llapi_migrate_mdt(path, param);
4554 int llapi_find(char *path, struct find_param *param)
4556 return param_callback(path, cb_find_init, cb_common_fini, param);
4560 * Get MDT number that the file/directory inode referenced
4561 * by the open fd resides on.
4562 * Return 0 and mdtidx on success, or -ve errno.
4564 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
4566 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
4571 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
4572 struct dirent64 *de)
4574 struct find_param *param = (struct find_param *)data;
4575 DIR *d = dirp == NULL ? NULL : *dirp;
4579 if (parent == NULL && d == NULL)
4583 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4584 } else /* if (parent) */ {
4587 fd = open(path, O_RDONLY | O_NOCTTY);
4589 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
4597 if (ret == -ENODATA) {
4598 if (!param->fp_obd_uuid)
4599 llapi_printf(LLAPI_MSG_NORMAL,
4600 "'%s' has no stripe info\n", path);
4602 } else if (ret == -ENOENT) {
4603 llapi_error(LLAPI_MSG_WARN, ret,
4604 "warning: %s: '%s' does not exist",
4607 } else if (ret == -ENOTTY) {
4608 llapi_error(LLAPI_MSG_ERROR, ret,
4609 "%s: '%s' not on a Lustre fs",
4612 llapi_error(LLAPI_MSG_ERROR, ret,
4613 "error: %s: '%s' failed get_mdtidx",
4619 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
4620 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
4622 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
4626 /* Do not go down anymore? */
4627 if (param->fp_depth == param->fp_max_depth)
4635 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
4636 struct dirent64 *de)
4638 struct find_param *param = (struct find_param *)data;
4639 DIR *d = dirp == NULL ? NULL : *dirp;
4642 if (parent == NULL && d == NULL)
4645 if (param->fp_obd_uuid) {
4646 param->fp_quiet = 1;
4647 ret = setup_obd_uuid(d ? dirfd(d) : dirfd(parent), path, param);
4652 if (d && (param->fp_get_lmv || param->fp_get_default_lmv))
4653 ret = cb_get_dirstripe(path, d, param);
4655 (parent && !param->fp_get_lmv && !param->fp_get_default_lmv))
4656 ret = get_lmd_info(path, parent, d, ¶m->fp_lmd->lmd_lmm,
4657 param->fp_lum_size, GET_LMD_STRIPE);
4662 if (errno == ENODATA && d != NULL) {
4663 /* We need to "fake" the "use the default" values
4664 * since the lmm struct is zeroed out at this point.
4665 * The magic needs to be set in order to satisfy
4666 * a check later on in the code path.
4667 * The object_seq needs to be set for the "(Default)"
4668 * prefix to be displayed. */
4669 if (param->fp_get_default_lmv) {
4670 struct lmv_user_md *lum = param->fp_lmv_md;
4672 lum->lum_magic = LMV_USER_MAGIC;
4673 lum->lum_stripe_count = 0;
4674 lum->lum_stripe_offset = -1;
4676 } else if (param->fp_get_lmv) {
4677 struct lmv_user_md *lum = param->fp_lmv_md;
4680 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
4683 lum->lum_magic = LMV_MAGIC_V1;
4684 lum->lum_stripe_count = 0;
4685 lum->lum_stripe_offset = mdtidx;
4688 struct lov_user_md *lmm =
4689 ¶m->fp_lmd->lmd_lmm;
4691 lmm->lmm_magic = LOV_USER_MAGIC_V1;
4693 ostid_set_seq(&lmm->lmm_oi,
4694 FID_SEQ_LOV_DEFAULT);
4695 lmm->lmm_stripe_count = 0;
4696 lmm->lmm_stripe_size = 0;
4697 lmm->lmm_stripe_offset = -1;
4700 } else if (errno == ENODATA && parent != NULL) {
4701 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
4702 llapi_printf(LLAPI_MSG_NORMAL,
4703 "%s has no stripe info\n", path);
4705 } else if (errno == ENOENT) {
4706 llapi_error(LLAPI_MSG_WARN, -ENOENT,
4707 "warning: %s: %s does not exist",
4710 } else if (errno == ENOTTY) {
4712 llapi_error(LLAPI_MSG_ERROR, ret,
4713 "%s: '%s' not on a Lustre fs?",
4718 llapi_error(LLAPI_MSG_ERROR, ret,
4719 "error: %s: %s failed for %s",
4720 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
4721 "IOC_MDC_GETFILESTRIPE", path);
4728 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
4729 llapi_lov_dump_user_lmm(param, path, d ? LDF_IS_DIR : 0);
4732 /* Do not get down anymore? */
4733 if (param->fp_depth == param->fp_max_depth)
4741 int llapi_getstripe(char *path, struct find_param *param)
4743 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
4744 cb_get_mdt_index : cb_getstripe,
4745 cb_common_fini, param);
4748 int llapi_obd_fstatfs(int fd, __u32 type, __u32 index,
4749 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4751 char raw[MAX_IOC_BUFLEN] = {'\0'};
4753 struct obd_ioctl_data data = { 0 };
4756 data.ioc_inlbuf1 = (char *)&type;
4757 data.ioc_inllen1 = sizeof(__u32);
4758 data.ioc_inlbuf2 = (char *)&index;
4759 data.ioc_inllen2 = sizeof(__u32);
4760 data.ioc_pbuf1 = (char *)stat_buf;
4761 data.ioc_plen1 = sizeof(struct obd_statfs);
4762 data.ioc_pbuf2 = (char *)uuid_buf;
4763 data.ioc_plen2 = sizeof(struct obd_uuid);
4765 rc = llapi_ioctl_pack(&data, &rawbuf, sizeof(raw));
4767 llapi_error(LLAPI_MSG_ERROR, rc,
4768 "llapi_obd_statfs: error packing ioctl data");
4772 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
4774 return rc < 0 ? -errno : 0;
4777 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
4778 struct obd_statfs *stat_buf, struct obd_uuid *uuid_buf)
4783 fd = open(path, O_RDONLY);
4786 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
4788 /* If we can't even open a file on the filesystem (e.g. with
4789 * -ESHUTDOWN), force caller to exit or it will loop forever. */
4793 rc = llapi_obd_fstatfs(fd, type, index, stat_buf, uuid_buf);
4800 #define MAX_STRING_SIZE 128
4802 int llapi_ping(char *obd_type, char *obd_name)
4808 rc = cfs_get_param_paths(&path, "%s/%s/ping",
4809 obd_type, obd_name);
4813 fd = open(path.gl_pathv[0], O_WRONLY);
4816 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s",
4821 /* The purpose is to send a byte as a ping, whatever this byte is. */
4822 /* coverity[uninit_use_in_call] */
4823 rc = write(fd, buf, 1);
4831 cfs_free_param_data(&path);
4835 int llapi_target_iterate(int type_num, char **obd_type,
4836 void *args, llapi_cb_t cb)
4838 char buf[MAX_STRING_SIZE];
4843 rc = cfs_get_param_paths(¶m, "devices");
4847 fp = fopen(param.gl_pathv[0], "r");
4850 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'",
4855 while (fgets(buf, sizeof(buf), fp) != NULL) {
4856 char *obd_type_name = NULL;
4857 char *obd_name = NULL;
4858 char *obd_uuid = NULL;
4860 struct obd_statfs osfs_buffer;
4862 while(bufp[0] == ' ')
4865 for(i = 0; i < 3; i++) {
4866 obd_type_name = strsep(&bufp, " ");
4868 obd_name = strsep(&bufp, " ");
4869 obd_uuid = strsep(&bufp, " ");
4871 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
4873 for (i = 0; i < type_num; i++) {
4874 if (strcmp(obd_type_name, obd_type[i]) != 0)
4877 cb(obd_type_name, obd_name, obd_uuid, args);
4882 cfs_free_param_data(¶m);
4886 static void do_target_check(char *obd_type_name, char *obd_name,
4887 char *obd_uuid, void *args)
4891 rc = llapi_ping(obd_type_name, obd_name);
4892 if (rc == ENOTCONN) {
4893 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
4895 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
4897 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
4901 int llapi_target_check(int type_num, char **obd_type, char *dir)
4903 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
4906 #undef MAX_STRING_SIZE
4908 /* Is this a lustre fs? */
4909 int llapi_is_lustre_mnttype(const char *type)
4911 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
4914 /* Is this a lustre client fs? */
4915 int llapi_is_lustre_mnt(struct mntent *mnt)
4917 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
4918 strstr(mnt->mnt_fsname, ":/") != NULL);
4921 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
4923 char fsname[PATH_MAX + 1];
4927 rc = llapi_search_fsname(mnt, fsname);
4931 root = open(mnt, O_RDONLY | O_DIRECTORY);
4934 llapi_error(LLAPI_MSG_ERROR, rc, "cannot open '%s'", mnt);
4938 rc = ioctl(root, OBD_IOC_QUOTACTL, qctl);
4946 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4947 * format must have %s%s, buf must be > 16
4948 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4949 * then buf = "lustre-MDT0000"
4951 static int get_mdtname(char *name, char *format, char *buf)
4953 char suffix[]="-MDT0000";
4954 int len = strlen(name);
4956 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4957 name[len - 5] = '\0';
4962 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4965 /* Not enough room to add suffix */
4966 llapi_err_noerrno(LLAPI_MSG_ERROR,
4967 "Invalid MDT name |%s|", name);
4972 return sprintf(buf, format, name, suffix);
4975 /** ioctl on filsystem root, with mdtindex sent as data
4976 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4977 * \param mdtidxp pointer to integer within data to be filled in with the
4978 * mdt index (0 if no mdt is specified). NULL won't be filled.
4980 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4988 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4989 Open root and parse mdt index. */
4990 if (mdtname[0] == '/') {
4992 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4993 (char *)mdtname, -1);
4995 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4997 ptr = fsname + strlen(fsname) - 8;
4999 index = strtol(ptr + 4, NULL, 16);
5000 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
5004 llapi_err_noerrno(LLAPI_MSG_ERROR,
5005 "Can't open %s: %d\n", mdtname, rc);
5012 rc = ioctl(fd, opc, data);
5021 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
5022 int buflen, long long *recno, int *linkno)
5024 const char *fidstr_orig = fidstr;
5026 struct getinfo_fid2path *gf;
5031 while (*fidstr == '[')
5034 sscanf(fidstr, SFID, RFID(&fid));
5035 if (!fid_is_sane(&fid)) {
5036 llapi_err_noerrno(LLAPI_MSG_ERROR,
5037 "bad FID format '%s', should be [seq:oid:ver]"
5038 " (e.g. "DFID")\n", fidstr_orig,
5039 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
5043 gf = malloc(sizeof(*gf) + buflen);
5048 gf->gf_recno = *recno;
5049 gf->gf_linkno = *linkno;
5050 gf->gf_pathlen = buflen;
5052 /* Take path or fsname */
5053 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
5058 /* strip out instances of // */
5059 for (a = gf->gf_u.gf_path; *a != '\0'; a++) {
5060 if ((*a == '/') && (*(a + 1) == '/'))
5067 if (buf[0] == '\0') { /* ROOT path */
5072 *recno = gf->gf_recno;
5073 *linkno = gf->gf_linkno;
5080 static int fid_from_lma(const char *path, int fd, struct lu_fid *fid)
5083 struct lustre_mdt_attrs *lma;
5087 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
5089 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
5092 lma = (struct lustre_mdt_attrs *)buf;
5093 fid_le_to_cpu(fid, &lma->lma_self_fid);
5097 int llapi_get_mdt_index_by_fid(int fd, const struct lu_fid *fid,
5102 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
5111 int llapi_fd2fid(int fd, struct lu_fid *fid)
5115 memset(fid, 0, sizeof(*fid));
5117 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
5118 if (rc == -EINVAL || rc == -ENOTTY)
5119 rc = fid_from_lma(NULL, fd, fid);
5124 int llapi_path2fid(const char *path, struct lu_fid *fid)
5128 memset(fid, 0, sizeof(*fid));
5129 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5131 if (errno == ELOOP || errno == ENXIO)
5132 return fid_from_lma(path, -1, fid);
5136 rc = llapi_fd2fid(fd, fid);
5137 if (rc == -EINVAL || rc == -ENOTTY)
5138 rc = fid_from_lma(path, -1, fid);
5144 int llapi_fd2parent(int fd, unsigned int linkno, struct lu_fid *parent_fid,
5145 char *name, size_t name_size)
5147 struct getparent *gp;
5150 gp = malloc(sizeof(*gp) + name_size);
5154 gp->gp_linkno = linkno;
5155 gp->gp_name_size = name_size;
5157 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
5163 *parent_fid = gp->gp_fid;
5165 strncpy(name, gp->gp_name, name_size);
5166 name[name_size - 1] = '\0';
5173 int llapi_path2parent(const char *path, unsigned int linkno,
5174 struct lu_fid *parent_fid, char *name, size_t name_size)
5179 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
5183 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
5188 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
5193 root = open(mnt, O_RDONLY | O_DIRECTORY);
5196 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
5200 rc = ioctl(root, LL_IOC_GET_CONNECT_FLAGS, flags);
5203 llapi_error(LLAPI_MSG_ERROR, rc,
5204 "ioctl on %s for getting connect flags failed", mnt);
5211 * Get a 64-bit value representing the version of file data pointed by fd.
5213 * Each write or truncate, flushed on OST, will change this value. You can use
5214 * this value to verify if file data was modified. This only checks the file
5215 * data, not metadata.
5217 * \param flags 0: no flush pages, usually used it the process has already
5219 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
5221 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
5222 * pages from clients.
5224 * \retval 0 on success.
5225 * \retval -errno on error.
5227 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
5230 struct ioc_data_version idv;
5232 idv.idv_flags = (__u32)flags;
5234 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5238 *data_version = idv.idv_version;
5244 * Flush cached pages from all clients.
5246 * \param fd File descriptor
5250 int llapi_file_flush(int fd)
5254 return llapi_get_data_version(fd, &dv, LL_DV_WR_FLUSH);
5258 * Fetch layout version from OST objects. Layout version on OST objects are
5259 * only set when the file is a mirrored file AND after the file has been
5260 * written at least once.
5262 * It actually fetches the least layout version from the objects.
5264 int llapi_get_ost_layout_version(int fd, __u32 *layout_version)
5267 struct ioc_data_version idv = { 0 };
5269 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
5273 *layout_version = idv.idv_layout_version;
5279 * Create a file without any name and open it for read/write
5281 * - file is created as if it were a standard file in the given \a directory
5282 * - file does not appear in \a directory and mtime does not change because
5283 * the filename is handled specially by the Lustre MDS.
5284 * - file is destroyed at final close
5286 * \param[in] directory directory from which to inherit layout/MDT idx
5287 * \param[in] mdt_idx MDT index on which the file is created,
5288 * \a idx == -1 means no specific MDT is requested
5289 * \param[in] mode standard open(2) mode
5290 * \param[in] stripe_param stripe parameters. May be NULL.
5292 * \retval a file descriptor on success.
5293 * \retval -errno on error.
5295 int llapi_create_volatile_param(const char *directory, int mdt_idx,
5296 int open_flags, mode_t mode,
5297 const struct llapi_stripe_param *stripe_param)
5299 char file_path[PATH_MAX];
5300 int saved_errno = errno;
5302 unsigned int rnumber;
5308 rc = snprintf(file_path, sizeof(file_path),
5309 "%s/" LUSTRE_VOLATILE_HDR "::%.4X",
5310 directory, rnumber);
5312 rc = snprintf(file_path, sizeof(file_path),
5313 "%s/" LUSTRE_VOLATILE_HDR ":%.4X:%.4X",
5314 directory, mdt_idx, rnumber);
5316 if (rc < 0 || rc >= sizeof(file_path))
5317 return -ENAMETOOLONG;
5320 * Either open O_WRONLY or O_RDWR, creating RDONLY
5321 * is non-sensical here
5323 if ((open_flags & O_ACCMODE) == O_RDONLY)
5324 open_flags = O_RDWR | (open_flags & ~O_ACCMODE);
5326 open_flags |= O_CREAT | O_EXCL | O_NOFOLLOW;
5328 if (stripe_param != NULL) {
5329 fd = llapi_file_open_param(file_path, open_flags,
5330 mode, stripe_param);
5334 fd = open(file_path, open_flags, mode);
5338 } while (fd < 0 && rc == -EEXIST);
5341 llapi_error(LLAPI_MSG_ERROR, rc,
5342 "Cannot create volatile file '%s' in '%s'",
5343 file_path + strlen(directory) + 1 +
5344 LUSTRE_VOLATILE_HDR_LEN,
5350 * Unlink file in case this wasn't a Lustre filesystem and the magic
5351 * volatile filename wasn't handled as intended. The effect is the
5352 * same. If volatile open was supported then we expect unlink() to
5355 (void)unlink(file_path);
5358 * Since we are returning successfully we restore errno (and
5359 * mask out possible EEXIST from open() and ENOENT from unlink().
5361 errno = saved_errno;
5367 * Create a file without any name open it for read/write
5369 * - file is created as if it were a standard file in the given \a directory
5370 * - file does not appear in \a directory and mtime does not change because
5371 * the filename is handled specially by the Lustre MDS.
5372 * - file is removed at final close
5373 * - file modes are rw------- since it doesn't make sense to have a read-only
5374 * or write-only file that cannot be opened again.
5375 * - if user wants another mode it must use fchmod() on the open file, no
5376 * security problems arise because it cannot be opened by another process.
5378 * \param[in] directory directory from which to inherit layout/MDT idx
5379 * \param[in] idx MDT index on which the file is created,
5380 * \a idx == -1 means no specific MDT is requested
5381 * \param[in] open_flags standard open(2) flags
5383 * \retval a file descriptor on success.
5384 * \retval -errno on error.
5386 int llapi_create_volatile_idx(const char *directory, int mdt_idx,
5389 return llapi_create_volatile_param(directory, mdt_idx, open_flags,
5390 S_IRUSR | S_IWUSR, NULL);
5394 * Swap the layouts between 2 file descriptors
5395 * the 2 files must be open for writing
5396 * first fd received the ioctl, second fd is passed as arg
5397 * this is assymetric but avoid use of root path for ioctl
5399 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
5400 int gid, __u64 flags)
5402 struct lustre_swap_layouts lsl;
5407 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5408 rc = fstat(fd1, &st1);
5412 rc = fstat(fd2, &st2);
5417 lsl.sl_flags = flags;
5421 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
5425 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
5426 struct timeval tv1[2];
5427 struct timeval tv2[2];
5429 memset(tv1, 0, sizeof(tv1));
5430 memset(tv2, 0, sizeof(tv2));
5432 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
5433 tv1[0].tv_sec = st1.st_atime;
5434 tv2[0].tv_sec = st2.st_atime;
5436 tv1[0].tv_sec = st2.st_atime;
5437 tv2[0].tv_sec = st1.st_atime;
5440 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
5441 tv1[1].tv_sec = st1.st_mtime;
5442 tv2[1].tv_sec = st2.st_mtime;
5444 tv1[1].tv_sec = st2.st_mtime;
5445 tv2[1].tv_sec = st1.st_mtime;
5448 rc = futimes(fd1, tv1);
5452 rc = futimes(fd2, tv2);
5460 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
5467 while (grp_id == 0);
5469 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
5477 * Swap the layouts between 2 files
5478 * the 2 files are open in write
5480 int llapi_swap_layouts(const char *path1, const char *path2,
5481 __u64 dv1, __u64 dv2, __u64 flags)
5485 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
5488 llapi_error(LLAPI_MSG_ERROR, rc,
5489 "error: cannot open '%s' for write", path1);
5493 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
5496 llapi_error(LLAPI_MSG_ERROR, rc,
5497 "error: cannot open '%s' for write", path2);
5501 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
5503 llapi_error(LLAPI_MSG_ERROR, rc,
5504 "error: cannot swap layout between '%s' and '%s'",
5515 * Attempt to open a file with Lustre file identifier \a fid
5516 * and return an open file descriptor.
5518 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
5519 * \param[in] fid Lustre file identifier of file to open
5520 * \param[in] flags open() flags
5522 * \retval non-negative file descriptor on successful open
5523 * \retval -1 if an error occurred
5525 int llapi_open_by_fid(const char *lustre_dir, const struct lu_fid *fid,
5528 char mntdir[PATH_MAX];
5529 char path[PATH_MAX];
5532 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
5536 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
5537 return open(path, flags);
5543 * \param fd File to lock.
5544 * \param gid Group Identifier.
5546 * \retval 0 on success.
5547 * \retval -errno on failure.
5549 int llapi_group_lock(int fd, int gid)
5553 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
5556 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
5564 * \param fd File to unlock.
5565 * \param gid Group Identifier.
5567 * \retval 0 on success.
5568 * \retval -errno on failure.
5570 int llapi_group_unlock(int fd, int gid)
5574 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
5577 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");