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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/fid/lproc_fid.c
38 * Lustre Sequence Manager
40 * Author: Yury Umanets <umka@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_FID
45 #include <libcfs/libcfs.h>
46 #include <linux/module.h>
48 #include <obd_class.h>
49 #include <obd_support.h>
50 #include <lustre_fid.h>
51 #include <lprocfs_status.h>
52 #include "fid_internal.h"
53 #include <md_object.h>
57 /* Format: [0x64BIT_INT - 0x64BIT_INT] + 32 bytes just in case */
58 #define MAX_FID_RANGE_STRLEN (32 + 2 * 2 * sizeof(__u64))
60 * Reduce the SEQ range allocated to a node to a strict subset of the range
61 * currently-allocated SEQ range. If the specified range is "clear", then
62 * drop all allocated sequences and request a new one from the master.
64 * Note: this function should only be used for testing, it is not necessarily
65 * safe for production use.
68 lprocfs_fid_write_common(const char __user *buffer, size_t count,
69 struct lu_seq_range *range)
71 struct lu_seq_range tmp = { 0, };
73 char kernbuf[MAX_FID_RANGE_STRLEN];
76 LASSERT(range != NULL);
78 if (count >= sizeof(kernbuf))
81 if (copy_from_user(kernbuf, buffer, count))
86 if (count == 5 && strcmp(kernbuf, "clear") == 0) {
87 memset(range, 0, sizeof(*range));
91 /* of the form "[0x0000000240000400 - 0x000000028000400]" */
92 rc = sscanf(kernbuf, "[%llx - %llx]\n",
93 (long long unsigned *)&tmp.lsr_start,
94 (long long unsigned *)&tmp.lsr_end);
95 if (!range_is_sane(&tmp) || range_is_zero(&tmp) ||
96 tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end)
102 #ifdef HAVE_SERVER_SUPPORT
104 * Server side procfs stuff.
107 lprocfs_server_fid_space_seq_write(struct file *file, const char __user *buffer,
108 size_t count, loff_t *off)
110 struct lu_server_seq *seq = ((struct seq_file *)file->private_data)->private;
114 LASSERT(seq != NULL);
116 mutex_lock(&seq->lss_mutex);
117 rc = lprocfs_fid_write_common(buffer, count, &seq->lss_space);
119 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
120 seq->lss_name, PRANGE(&seq->lss_space));
122 mutex_unlock(&seq->lss_mutex);
128 lprocfs_server_fid_space_seq_show(struct seq_file *m, void *unused)
130 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
134 LASSERT(seq != NULL);
136 mutex_lock(&seq->lss_mutex);
137 rc = seq_printf(m, "["LPX64" - "LPX64"]:%x:%s\n",
138 PRANGE(&seq->lss_space));
139 mutex_unlock(&seq->lss_mutex);
145 lprocfs_server_fid_server_seq_show(struct seq_file *m, void *unused)
147 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
148 struct client_obd *cli;
152 LASSERT(seq != NULL);
155 if (seq->lss_cli->lcs_exp != NULL) {
156 cli = &seq->lss_cli->lcs_exp->exp_obd->u.cli;
157 rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
159 rc = seq_printf(m, "%s\n",
160 seq->lss_cli->lcs_srv->lss_name);
163 rc = seq_printf(m, "<none>\n");
170 lprocfs_server_fid_width_seq_write(struct file *file, const char __user *buffer,
171 size_t count, loff_t *off)
173 struct lu_server_seq *seq = ((struct seq_file *)file->private_data)->private;
177 LASSERT(seq != NULL);
179 mutex_lock(&seq->lss_mutex);
181 rc = lprocfs_write_helper(buffer, count, &val);
183 CERROR("%s: invalid width.\n", seq->lss_name);
184 GOTO(out_unlock, count = rc);
187 seq->lss_width = val;
189 CDEBUG(D_INFO, "%s: Width: "LPU64"\n",
190 seq->lss_name, seq->lss_width);
192 mutex_unlock(&seq->lss_mutex);
198 lprocfs_server_fid_width_seq_show(struct seq_file *m, void *unused)
200 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
204 LASSERT(seq != NULL);
206 mutex_lock(&seq->lss_mutex);
207 rc = seq_printf(m, LPU64"\n", seq->lss_width);
208 mutex_unlock(&seq->lss_mutex);
213 LPROC_SEQ_FOPS(lprocfs_server_fid_space);
214 LPROC_SEQ_FOPS(lprocfs_server_fid_width);
215 LPROC_SEQ_FOPS_RO(lprocfs_server_fid_server);
217 struct lprocfs_seq_vars seq_server_proc_list[] = {
219 .fops = &lprocfs_server_fid_space_fops },
221 .fops = &lprocfs_server_fid_width_fops },
223 .fops = &lprocfs_server_fid_server_fops },
227 struct fld_seq_param {
228 struct lu_env fsp_env;
229 struct dt_it *fsp_it;
230 struct lu_server_fld *fsp_fld;
231 struct lu_server_seq *fsp_seq;
232 unsigned int fsp_stop:1;
236 * XXX: below is a copy of the functions in lustre/fld/lproc_fld.c.
237 * we want to avoid this duplication either by exporting the
238 * functions or merging fid and fld into a single module.
240 static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
242 struct fld_seq_param *param = p->private;
243 struct lu_server_fld *fld;
244 struct dt_object *obj;
245 const struct dt_it_ops *iops;
249 if (param == NULL || param->fsp_stop)
252 fld = param->fsp_fld;
254 LASSERT(obj != NULL);
255 iops = &obj->do_index_ops->dio_it;
257 rc = iops->load(¶m->fsp_env, param->fsp_it, *pos);
261 key = iops->key(¶m->fsp_env, param->fsp_it);
265 *pos = be64_to_cpu(*(__u64 *)key);
270 static void fldb_seq_stop(struct seq_file *p, void *v)
272 struct fld_seq_param *param = p->private;
273 const struct dt_it_ops *iops;
274 struct lu_server_fld *fld;
275 struct dt_object *obj;
280 fld = param->fsp_fld;
282 LASSERT(obj != NULL);
283 iops = &obj->do_index_ops->dio_it;
285 iops->put(¶m->fsp_env, param->fsp_it);
288 static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
290 struct fld_seq_param *param = p->private;
291 struct lu_server_fld *fld;
292 struct dt_object *obj;
293 const struct dt_it_ops *iops;
296 if (param == NULL || param->fsp_stop)
299 fld = param->fsp_fld;
301 LASSERT(obj != NULL);
302 iops = &obj->do_index_ops->dio_it;
304 rc = iops->next(¶m->fsp_env, param->fsp_it);
310 *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it));
314 static int fldb_seq_show(struct seq_file *p, void *v)
316 struct fld_seq_param *param = p->private;
317 struct lu_server_fld *fld;
318 struct dt_object *obj;
319 const struct dt_it_ops *iops;
320 struct lu_seq_range fld_rec;
323 if (param == NULL || param->fsp_stop)
326 fld = param->fsp_fld;
328 LASSERT(obj != NULL);
329 iops = &obj->do_index_ops->dio_it;
331 rc = iops->rec(¶m->fsp_env, param->fsp_it,
332 (struct dt_rec *)&fld_rec, 0);
334 CERROR("%s: read record error: rc = %d\n",
336 } else if (fld_rec.lsr_start != 0) {
337 range_be_to_cpu(&fld_rec, &fld_rec);
338 rc = seq_printf(p, DRANGE"\n", PRANGE(&fld_rec));
344 struct seq_operations fldb_sops = {
345 .start = fldb_seq_start,
346 .stop = fldb_seq_stop,
347 .next = fldb_seq_next,
348 .show = fldb_seq_show,
351 static int fldb_seq_open(struct inode *inode, struct file *file)
353 struct seq_file *seq;
354 struct lu_server_seq *ss = (struct lu_server_seq *) PDE_DATA(inode);
355 struct lu_server_fld *fld;
356 struct dt_object *obj;
357 const struct dt_it_ops *iops;
358 struct fld_seq_param *param = NULL;
362 fld = ss->lss_site->ss_server_fld;
363 LASSERT(fld != NULL);
365 LPROCFS_ENTRY_CHECK(PDE(inode));
366 rc = seq_open(file, &fldb_sops);
372 seq = file->private_data;
377 OBD_ALLOC_PTR(param);
379 GOTO(out, rc = -ENOMEM);
381 rc = lu_env_init(¶m->fsp_env, LCT_MD_THREAD);
386 iops = &obj->do_index_ops->dio_it;
387 param->fsp_it = iops->init(¶m->fsp_env, obj, 0, NULL);
388 if (IS_ERR(param->fsp_it))
389 GOTO(out, rc = PTR_ERR(param->fsp_it));
391 param->fsp_fld = fld;
395 seq = file->private_data;
396 seq->private = param;
400 lu_env_fini(¶m->fsp_env);
407 static int fldb_seq_release(struct inode *inode, struct file *file)
409 struct seq_file *seq = file->private_data;
410 struct fld_seq_param *param;
411 struct lu_server_fld *fld;
412 struct dt_object *obj;
413 const struct dt_it_ops *iops;
415 param = seq->private;
417 lprocfs_seq_release(inode, file);
421 fld = param->fsp_fld;
423 LASSERT(obj != NULL);
424 iops = &obj->do_index_ops->dio_it;
426 LASSERT(iops != NULL);
427 LASSERT(param->fsp_it != NULL);
428 iops->fini(¶m->fsp_env, param->fsp_it);
429 lu_env_fini(¶m->fsp_env);
431 lprocfs_seq_release(inode, file);
436 static ssize_t fldb_seq_write(struct file *file, const char __user *buf,
437 size_t len, loff_t *off)
439 struct seq_file *seq = file->private_data;
440 struct fld_seq_param *param;
441 struct lu_seq_range range;
443 char _buffer[MAX_FID_RANGE_STRLEN];
444 char *buffer = _buffer;
447 param = seq->private;
451 if (len >= sizeof(_buffer))
454 if (copy_from_user(buffer, buf, len))
455 GOTO(out, rc = -EFAULT);
459 * format - [0x0000000200000007-0x0000000200000008):0:mdt
462 GOTO(out, rc = -EINVAL);
465 range.lsr_start = simple_strtoull(buffer, &buffer, 0);
467 GOTO(out, rc = -EINVAL);
470 range.lsr_end = simple_strtoull(buffer, &buffer, 0);
472 GOTO(out, rc = -EINVAL);
475 GOTO(out, rc = -EINVAL);
478 range.lsr_index = simple_strtoul(buffer, &buffer, 0);
480 GOTO(out, rc = -EINVAL);
483 if (strncmp(buffer, "mdt", 3) == 0)
484 range.lsr_flags = LU_SEQ_RANGE_MDT;
485 else if (strncmp(buffer, "ost", 3) == 0)
486 range.lsr_flags = LU_SEQ_RANGE_OST;
488 GOTO(out, rc = -EINVAL);
490 rc = seq_server_alloc_spec(param->fsp_seq->lss_site->ss_control_seq,
491 &range, ¶m->fsp_env);
494 RETURN(rc < 0 ? rc : len);
497 const struct file_operations seq_fld_proc_seq_fops = {
498 .owner = THIS_MODULE,
499 .open = fldb_seq_open,
501 .write = fldb_seq_write,
502 .release = fldb_seq_release,
505 #endif /* HAVE_SERVER_SUPPORT */
507 /* Client side procfs stuff */
509 lprocfs_client_fid_space_seq_write(struct file *file, const char __user *buffer,
510 size_t count, loff_t *off)
512 struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private;
516 LASSERT(seq != NULL);
518 mutex_lock(&seq->lcs_mutex);
519 rc = lprocfs_fid_write_common(buffer, count, &seq->lcs_space);
521 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
522 seq->lcs_name, PRANGE(&seq->lcs_space));
525 mutex_unlock(&seq->lcs_mutex);
531 lprocfs_client_fid_space_seq_show(struct seq_file *m, void *unused)
533 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
537 LASSERT(seq != NULL);
539 mutex_lock(&seq->lcs_mutex);
540 rc = seq_printf(m, "["LPX64" - "LPX64"]:%x:%s\n",
541 PRANGE(&seq->lcs_space));
542 mutex_unlock(&seq->lcs_mutex);
548 lprocfs_client_fid_width_seq_write(struct file *file, const char __user *buffer,
549 size_t count, loff_t *off)
551 struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private;
556 LASSERT(seq != NULL);
558 mutex_lock(&seq->lcs_mutex);
560 rc = lprocfs_write_helper(buffer, count, &val);
562 mutex_unlock(&seq->lcs_mutex);
566 if (seq->lcs_type == LUSTRE_SEQ_DATA)
567 max = LUSTRE_DATA_SEQ_MAX_WIDTH;
569 max = LUSTRE_METADATA_SEQ_MAX_WIDTH;
571 if (val <= max && val > 0) {
572 seq->lcs_width = val;
575 CDEBUG(D_INFO, "%s: Sequence size: "LPU64"\n",
576 seq->lcs_name, seq->lcs_width);
579 mutex_unlock(&seq->lcs_mutex);
585 lprocfs_client_fid_width_seq_show(struct seq_file *m, void *unused)
587 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
591 LASSERT(seq != NULL);
593 mutex_lock(&seq->lcs_mutex);
594 rc = seq_printf(m, LPU64"\n", seq->lcs_width);
595 mutex_unlock(&seq->lcs_mutex);
601 lprocfs_client_fid_fid_seq_show(struct seq_file *m, void *unused)
603 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
607 LASSERT(seq != NULL);
609 mutex_lock(&seq->lcs_mutex);
610 rc = seq_printf(m, DFID"\n", PFID(&seq->lcs_fid));
611 mutex_unlock(&seq->lcs_mutex);
617 lprocfs_client_fid_server_seq_show(struct seq_file *m, void *unused)
619 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
620 struct client_obd *cli;
624 LASSERT(seq != NULL);
626 if (seq->lcs_exp != NULL) {
627 cli = &seq->lcs_exp->exp_obd->u.cli;
628 rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
630 rc = seq_printf(m, "%s\n", seq->lcs_srv->lss_name);
635 LPROC_SEQ_FOPS(lprocfs_client_fid_space);
636 LPROC_SEQ_FOPS(lprocfs_client_fid_width);
637 LPROC_SEQ_FOPS_RO(lprocfs_client_fid_server);
638 LPROC_SEQ_FOPS_RO(lprocfs_client_fid_fid);
640 struct lprocfs_seq_vars seq_client_proc_list[] = {
642 .fops = &lprocfs_client_fid_space_fops },
644 .fops = &lprocfs_client_fid_width_fops },
646 .fops = &lprocfs_client_fid_server_fops },
648 .fops = &lprocfs_client_fid_fid_fops },