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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/fid/lproc_fid.c
34 * Lustre Sequence Manager
36 * Author: Yury Umanets <umka@clusterfs.com>
39 #define DEBUG_SUBSYSTEM S_FID
41 #include <libcfs/libcfs.h>
42 #include <linux/module.h>
44 #include <obd_class.h>
45 #include <obd_support.h>
46 #include <lustre_fid.h>
47 #include <lprocfs_status.h>
48 #include "fid_internal.h"
52 /* Format: [0x64BIT_INT - 0x64BIT_INT] + 32 bytes just in case */
53 #define MAX_FID_RANGE_STRLEN (32 + 2 * 2 * sizeof(__u64))
55 * Reduce the SEQ range allocated to a node to a strict subset of the range
56 * currently-allocated SEQ range. If the specified range is "clear", then
57 * drop all allocated sequences and request a new one from the master.
59 * Note: this function should only be used for testing, it is not necessarily
60 * safe for production use.
63 lprocfs_fid_write_common(const char __user *buffer, size_t count,
64 struct lu_seq_range *range)
66 struct lu_seq_range tmp = {
69 char kernbuf[MAX_FID_RANGE_STRLEN];
72 LASSERT(range != NULL);
74 if (count >= sizeof(kernbuf))
77 if (copy_from_user(kernbuf, buffer, count))
82 if (count == 5 && strcmp(kernbuf, "clear") == 0) {
83 memset(range, 0, sizeof(*range));
87 /* of the form "[0x0000000240000400 - 0x000000028000400]" */
88 sscanf(kernbuf, "[%llx - %llx]\n",
89 (long long unsigned *)&tmp.lsr_start,
90 (long long unsigned *)&tmp.lsr_end);
91 if (!lu_seq_range_is_sane(&tmp) || lu_seq_range_is_zero(&tmp) ||
92 tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end)
98 #ifdef HAVE_SERVER_SUPPORT
100 * Server side procfs stuff.
103 lprocfs_server_fid_space_seq_write(struct file *file, const char __user *buffer,
104 size_t count, loff_t *off)
106 struct lu_server_seq *seq = ((struct seq_file *)file->private_data)->private;
110 LASSERT(seq != NULL);
112 mutex_lock(&seq->lss_mutex);
113 rc = lprocfs_fid_write_common(buffer, count, &seq->lss_space);
115 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
116 seq->lss_name, PRANGE(&seq->lss_space));
118 mutex_unlock(&seq->lss_mutex);
124 lprocfs_server_fid_space_seq_show(struct seq_file *m, void *unused)
126 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
129 LASSERT(seq != NULL);
131 mutex_lock(&seq->lss_mutex);
132 seq_printf(m, "[%#llx - %#llx]:%x:%s\n", PRANGE(&seq->lss_space));
133 mutex_unlock(&seq->lss_mutex);
139 lprocfs_server_fid_server_seq_show(struct seq_file *m, void *unused)
141 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
142 struct client_obd *cli;
145 LASSERT(seq != NULL);
148 if (seq->lss_cli->lcs_exp != NULL) {
149 cli = &seq->lss_cli->lcs_exp->exp_obd->u.cli;
150 seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
152 seq_printf(m, "%s\n", seq->lss_cli->lcs_srv->lss_name);
155 seq_puts(m, "<none>\n");
162 lprocfs_server_fid_width_seq_write(struct file *file, const char __user *buffer,
163 size_t count, loff_t *off)
165 struct seq_file *m = file->private_data;
166 struct lu_server_seq *seq = m->private;
170 LASSERT(seq != NULL);
172 mutex_lock(&seq->lss_mutex);
174 rc = kstrtoull_from_user(buffer, count, 0, &seq->lss_width);
176 CERROR("%s: invalid FID sequence width: rc = %d\n",
178 GOTO(out_unlock, count = rc);
181 CDEBUG(D_INFO, "%s: Width: %llu\n",
182 seq->lss_name, seq->lss_width);
184 mutex_unlock(&seq->lss_mutex);
190 lprocfs_server_fid_width_seq_show(struct seq_file *m, void *unused)
192 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
195 LASSERT(seq != NULL);
197 mutex_lock(&seq->lss_mutex);
198 seq_printf(m, "%llu\n", seq->lss_width);
199 mutex_unlock(&seq->lss_mutex);
204 LPROC_SEQ_FOPS(lprocfs_server_fid_space);
205 LPROC_SEQ_FOPS(lprocfs_server_fid_width);
206 LPROC_SEQ_FOPS_RO(lprocfs_server_fid_server);
208 struct lprocfs_vars seq_server_proc_list[] = {
210 .fops = &lprocfs_server_fid_space_fops },
212 .fops = &lprocfs_server_fid_width_fops },
214 .fops = &lprocfs_server_fid_server_fops },
218 struct fld_seq_param {
219 struct lu_env fsp_env;
220 struct dt_it *fsp_it;
221 struct lu_server_fld *fsp_fld;
222 struct lu_server_seq *fsp_seq;
223 unsigned int fsp_stop:1;
227 * XXX: below is a copy of the functions in lustre/fld/lproc_fld.c.
228 * we want to avoid this duplication either by exporting the
229 * functions or merging fid and fld into a single module.
231 static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
233 struct fld_seq_param *param = p->private;
234 struct lu_server_fld *fld;
235 struct dt_object *obj;
236 const struct dt_it_ops *iops;
240 if (param == NULL || param->fsp_stop)
243 fld = param->fsp_fld;
245 LASSERT(obj != NULL);
246 iops = &obj->do_index_ops->dio_it;
248 rc = iops->load(¶m->fsp_env, param->fsp_it, *pos);
252 key = iops->key(¶m->fsp_env, param->fsp_it);
256 *pos = be64_to_cpu(*(__u64 *)key);
261 static void fldb_seq_stop(struct seq_file *p, void *v)
263 struct fld_seq_param *param = p->private;
264 const struct dt_it_ops *iops;
265 struct lu_server_fld *fld;
266 struct dt_object *obj;
271 fld = param->fsp_fld;
273 LASSERT(obj != NULL);
274 iops = &obj->do_index_ops->dio_it;
276 iops->put(¶m->fsp_env, param->fsp_it);
279 static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
281 struct fld_seq_param *param = p->private;
282 struct lu_server_fld *fld;
283 struct dt_object *obj;
284 const struct dt_it_ops *iops;
287 if (param == NULL || param->fsp_stop)
290 fld = param->fsp_fld;
292 LASSERT(obj != NULL);
293 iops = &obj->do_index_ops->dio_it;
295 rc = iops->next(¶m->fsp_env, param->fsp_it);
301 *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it));
305 static int fldb_seq_show(struct seq_file *p, void *v)
307 struct fld_seq_param *param = p->private;
308 struct lu_server_fld *fld;
309 struct dt_object *obj;
310 const struct dt_it_ops *iops;
311 struct lu_seq_range fld_rec;
314 if (param == NULL || param->fsp_stop)
317 fld = param->fsp_fld;
319 LASSERT(obj != NULL);
320 iops = &obj->do_index_ops->dio_it;
322 rc = iops->rec(¶m->fsp_env, param->fsp_it,
323 (struct dt_rec *)&fld_rec, 0);
325 CERROR("%s: read record error: rc = %d\n",
327 } else if (fld_rec.lsr_start != 0) {
328 range_be_to_cpu(&fld_rec, &fld_rec);
329 seq_printf(p, DRANGE"\n", PRANGE(&fld_rec));
335 struct seq_operations fldb_sops = {
336 .start = fldb_seq_start,
337 .stop = fldb_seq_stop,
338 .next = fldb_seq_next,
339 .show = fldb_seq_show,
342 static int fldb_seq_open(struct inode *inode, struct file *file)
344 struct seq_file *seq;
345 struct lu_server_seq *ss = (struct lu_server_seq *) PDE_DATA(inode);
346 struct lu_server_fld *fld;
347 struct dt_object *obj;
348 const struct dt_it_ops *iops;
349 struct fld_seq_param *param = NULL;
353 fld = ss->lss_site->ss_server_fld;
354 LASSERT(fld != NULL);
356 rc = LPROCFS_ENTRY_CHECK(inode);
360 rc = seq_open(file, &fldb_sops);
366 seq = file->private_data;
371 OBD_ALLOC_PTR(param);
373 GOTO(out, rc = -ENOMEM);
375 rc = lu_env_init(¶m->fsp_env, LCT_MD_THREAD);
380 iops = &obj->do_index_ops->dio_it;
381 param->fsp_it = iops->init(¶m->fsp_env, obj, 0);
382 if (IS_ERR(param->fsp_it))
383 GOTO(out, rc = PTR_ERR(param->fsp_it));
385 param->fsp_fld = fld;
389 seq = file->private_data;
390 seq->private = param;
394 lu_env_fini(¶m->fsp_env);
401 static int fldb_seq_release(struct inode *inode, struct file *file)
403 struct seq_file *seq = file->private_data;
404 struct fld_seq_param *param;
405 struct lu_server_fld *fld;
406 struct dt_object *obj;
407 const struct dt_it_ops *iops;
409 param = seq->private;
411 lprocfs_seq_release(inode, file);
415 fld = param->fsp_fld;
417 LASSERT(obj != NULL);
418 iops = &obj->do_index_ops->dio_it;
420 LASSERT(iops != NULL);
421 LASSERT(param->fsp_it != NULL);
422 iops->fini(¶m->fsp_env, param->fsp_it);
423 lu_env_fini(¶m->fsp_env);
425 lprocfs_seq_release(inode, file);
430 static ssize_t fldb_seq_write(struct file *file, const char __user *buf,
431 size_t len, loff_t *off)
433 struct seq_file *seq = file->private_data;
434 struct fld_seq_param *param;
435 struct lu_seq_range range;
437 char _buffer[MAX_FID_RANGE_STRLEN];
438 char *buffer = _buffer;
441 param = seq->private;
445 if (len >= sizeof(_buffer))
448 if (copy_from_user(buffer, buf, len))
449 GOTO(out, rc = -EFAULT);
453 * format - [0x0000000200000007-0x0000000200000008):0:mdt
456 GOTO(out, rc = -EINVAL);
459 range.lsr_start = simple_strtoull(buffer, &buffer, 0);
461 GOTO(out, rc = -EINVAL);
464 range.lsr_end = simple_strtoull(buffer, &buffer, 0);
466 GOTO(out, rc = -EINVAL);
469 GOTO(out, rc = -EINVAL);
472 range.lsr_index = simple_strtoul(buffer, &buffer, 0);
474 GOTO(out, rc = -EINVAL);
477 if (strncmp(buffer, "mdt", 3) == 0)
478 range.lsr_flags = LU_SEQ_RANGE_MDT;
479 else if (strncmp(buffer, "ost", 3) == 0)
480 range.lsr_flags = LU_SEQ_RANGE_OST;
482 GOTO(out, rc = -EINVAL);
484 rc = seq_server_alloc_spec(param->fsp_seq->lss_site->ss_control_seq,
485 &range, ¶m->fsp_env);
488 RETURN(rc < 0 ? rc : len);
491 const struct file_operations seq_fld_proc_seq_fops = {
492 .owner = THIS_MODULE,
493 .open = fldb_seq_open,
495 .write = fldb_seq_write,
496 .release = fldb_seq_release,
499 #endif /* HAVE_SERVER_SUPPORT */
501 /* Client side procfs stuff */
503 lprocfs_client_fid_space_seq_write(struct file *file, const char __user *buffer,
504 size_t count, loff_t *off)
506 struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private;
510 LASSERT(seq != NULL);
512 mutex_lock(&seq->lcs_mutex);
513 rc = lprocfs_fid_write_common(buffer, count, &seq->lcs_space);
515 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
516 seq->lcs_name, PRANGE(&seq->lcs_space));
519 mutex_unlock(&seq->lcs_mutex);
525 lprocfs_client_fid_space_seq_show(struct seq_file *m, void *unused)
527 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
530 LASSERT(seq != NULL);
532 mutex_lock(&seq->lcs_mutex);
533 seq_printf(m, "[%#llx - %#llx]:%x:%s\n",
534 PRANGE(&seq->lcs_space));
535 mutex_unlock(&seq->lcs_mutex);
541 lprocfs_client_fid_width_seq_write(struct file *file, const char __user *buffer,
542 size_t count, loff_t *off)
544 struct seq_file *m = file->private_data;
545 struct lu_client_seq *seq = m->private;
551 LASSERT(seq != NULL);
553 mutex_lock(&seq->lcs_mutex);
555 rc = kstrtoull_from_user(buffer, count, 0, &val);
557 GOTO(out_unlock, count = rc);
560 if (seq->lcs_type == LUSTRE_SEQ_DATA)
561 max = LUSTRE_DATA_SEQ_MAX_WIDTH;
563 max = LUSTRE_METADATA_SEQ_MAX_WIDTH;
566 seq->lcs_width = val;
568 CDEBUG(D_INFO, "%s: Sequence size: %llu\n",
569 seq->lcs_name, seq->lcs_width);
571 GOTO(out_unlock, count = -ERANGE);
575 mutex_unlock(&seq->lcs_mutex);
580 lprocfs_client_fid_width_seq_show(struct seq_file *m, void *unused)
582 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
585 LASSERT(seq != NULL);
587 mutex_lock(&seq->lcs_mutex);
588 seq_printf(m, "%llu\n", seq->lcs_width);
589 mutex_unlock(&seq->lcs_mutex);
595 lprocfs_client_fid_fid_seq_show(struct seq_file *m, void *unused)
597 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
600 LASSERT(seq != NULL);
602 mutex_lock(&seq->lcs_mutex);
603 seq_printf(m, DFID"\n", PFID(&seq->lcs_fid));
604 mutex_unlock(&seq->lcs_mutex);
610 lprocfs_client_fid_server_seq_show(struct seq_file *m, void *unused)
612 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
613 struct client_obd *cli;
616 LASSERT(seq != NULL);
618 if (seq->lcs_exp != NULL) {
619 cli = &seq->lcs_exp->exp_obd->u.cli;
620 seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
622 seq_printf(m, "%s\n", seq->lcs_srv->lss_name);
627 LPROC_SEQ_FOPS(lprocfs_client_fid_space);
628 LPROC_SEQ_FOPS(lprocfs_client_fid_width);
629 LPROC_SEQ_FOPS_RO(lprocfs_client_fid_server);
630 LPROC_SEQ_FOPS_RO(lprocfs_client_fid_fid);
632 struct lprocfs_vars seq_client_proc_list[] = {
634 .fops = &lprocfs_client_fid_space_fops },
636 .fops = &lprocfs_client_fid_width_fops },
638 .fops = &lprocfs_client_fid_server_fops },
640 .fops = &lprocfs_client_fid_fid_fops },
644 #endif /* CONFIG_PROC_FS */