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 * Reduce the SEQ range allocated to a node to a strict subset of the range
58 * currently-allocated SEQ range. If the specified range is "clear", then
59 * drop all allocated sequences and request a new one from the master.
61 * Note: this function should only be used for testing, it is not necessarily
62 * safe for production use.
65 lprocfs_fid_write_common(const char *buffer, unsigned long count,
66 struct lu_seq_range *range)
68 struct lu_seq_range tmp = { 0, };
72 LASSERT(range != NULL);
74 if (count == 5 && strcmp(buffer, "clear") == 0) {
75 memset(range, 0, sizeof(*range));
79 /* of the form "[0x0000000240000400 - 0x000000028000400]" */
80 rc = sscanf(buffer, "[%llx - %llx]\n",
81 (long long unsigned *)&tmp.lsr_start,
82 (long long unsigned *)&tmp.lsr_end);
83 if (!range_is_sane(&tmp) || range_is_zero(&tmp) ||
84 tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end)
90 #ifdef HAVE_SERVER_SUPPORT
92 * Server side procfs stuff.
95 lprocfs_server_fid_space_seq_write(struct file *file, const char *buffer,
96 size_t count, loff_t *off)
98 struct lu_server_seq *seq = ((struct seq_file *)file->private_data)->private;
102 LASSERT(seq != NULL);
104 mutex_lock(&seq->lss_mutex);
105 rc = lprocfs_fid_write_common(buffer, count, &seq->lss_space);
107 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
108 seq->lss_name, PRANGE(&seq->lss_space));
110 mutex_unlock(&seq->lss_mutex);
116 lprocfs_server_fid_space_seq_show(struct seq_file *m, void *unused)
118 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
122 LASSERT(seq != NULL);
124 mutex_lock(&seq->lss_mutex);
125 rc = seq_printf(m, "["LPX64" - "LPX64"]:%x:%s\n",
126 PRANGE(&seq->lss_space));
127 mutex_unlock(&seq->lss_mutex);
133 lprocfs_server_fid_server_seq_show(struct seq_file *m, void *unused)
135 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
136 struct client_obd *cli;
140 LASSERT(seq != NULL);
143 if (seq->lss_cli->lcs_exp != NULL) {
144 cli = &seq->lss_cli->lcs_exp->exp_obd->u.cli;
145 rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
147 rc = seq_printf(m, "%s\n",
148 seq->lss_cli->lcs_srv->lss_name);
151 rc = seq_printf(m, "<none>\n");
158 lprocfs_server_fid_width_seq_write(struct file *file, const char *buffer,
159 size_t count, loff_t *off)
161 struct lu_server_seq *seq = ((struct seq_file *)file->private_data)->private;
165 LASSERT(seq != NULL);
167 mutex_lock(&seq->lss_mutex);
169 rc = lprocfs_write_helper(buffer, count, &val);
171 CERROR("%s: invalid width.\n", seq->lss_name);
172 GOTO(out_unlock, count = rc);
175 seq->lss_width = val;
177 CDEBUG(D_INFO, "%s: Width: "LPU64"\n",
178 seq->lss_name, seq->lss_width);
180 mutex_unlock(&seq->lss_mutex);
186 lprocfs_server_fid_width_seq_show(struct seq_file *m, void *unused)
188 struct lu_server_seq *seq = (struct lu_server_seq *)m->private;
192 LASSERT(seq != NULL);
194 mutex_lock(&seq->lss_mutex);
195 rc = seq_printf(m, LPU64"\n", seq->lss_width);
196 mutex_unlock(&seq->lss_mutex);
201 LPROC_SEQ_FOPS(lprocfs_server_fid_space);
202 LPROC_SEQ_FOPS(lprocfs_server_fid_width);
203 LPROC_SEQ_FOPS_RO(lprocfs_server_fid_server);
205 struct lprocfs_seq_vars seq_server_proc_list[] = {
206 { "space", &lprocfs_server_fid_space_fops },
207 { "width", &lprocfs_server_fid_width_fops },
208 { "server", &lprocfs_server_fid_server_fops },
212 struct fld_seq_param {
213 struct lu_env fsp_env;
214 struct dt_it *fsp_it;
215 struct lu_server_fld *fsp_fld;
216 struct lu_server_seq *fsp_seq;
217 unsigned int fsp_stop:1;
221 * XXX: below is a copy of the functions in lustre/fld/lproc_fld.c.
222 * we want to avoid this duplication either by exporting the
223 * functions or merging fid and fld into a single module.
225 static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
227 struct fld_seq_param *param = p->private;
228 struct lu_server_fld *fld;
229 struct dt_object *obj;
230 const struct dt_it_ops *iops;
234 if (param == NULL || param->fsp_stop)
237 fld = param->fsp_fld;
239 LASSERT(obj != NULL);
240 iops = &obj->do_index_ops->dio_it;
242 rc = iops->load(¶m->fsp_env, param->fsp_it, *pos);
246 key = iops->key(¶m->fsp_env, param->fsp_it);
250 *pos = be64_to_cpu(*(__u64 *)key);
255 static void fldb_seq_stop(struct seq_file *p, void *v)
257 struct fld_seq_param *param = p->private;
258 const struct dt_it_ops *iops;
259 struct lu_server_fld *fld;
260 struct dt_object *obj;
265 fld = param->fsp_fld;
267 LASSERT(obj != NULL);
268 iops = &obj->do_index_ops->dio_it;
270 iops->put(¶m->fsp_env, param->fsp_it);
273 static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
275 struct fld_seq_param *param = p->private;
276 struct lu_server_fld *fld;
277 struct dt_object *obj;
278 const struct dt_it_ops *iops;
281 if (param == NULL || param->fsp_stop)
284 fld = param->fsp_fld;
286 LASSERT(obj != NULL);
287 iops = &obj->do_index_ops->dio_it;
289 rc = iops->next(¶m->fsp_env, param->fsp_it);
295 *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it));
299 static int fldb_seq_show(struct seq_file *p, void *v)
301 struct fld_seq_param *param = p->private;
302 struct lu_server_fld *fld;
303 struct dt_object *obj;
304 const struct dt_it_ops *iops;
305 struct lu_seq_range fld_rec;
308 if (param == NULL || param->fsp_stop)
311 fld = param->fsp_fld;
313 LASSERT(obj != NULL);
314 iops = &obj->do_index_ops->dio_it;
316 rc = iops->rec(¶m->fsp_env, param->fsp_it,
317 (struct dt_rec *)&fld_rec, 0);
319 CERROR("%s: read record error: rc = %d\n",
321 } else if (fld_rec.lsr_start != 0) {
322 range_be_to_cpu(&fld_rec, &fld_rec);
323 rc = seq_printf(p, DRANGE"\n", PRANGE(&fld_rec));
329 struct seq_operations fldb_sops = {
330 .start = fldb_seq_start,
331 .stop = fldb_seq_stop,
332 .next = fldb_seq_next,
333 .show = fldb_seq_show,
336 static int fldb_seq_open(struct inode *inode, struct file *file)
338 struct seq_file *seq;
339 struct lu_server_seq *ss = (struct lu_server_seq *) PDE_DATA(inode);
340 struct lu_server_fld *fld;
341 struct dt_object *obj;
342 const struct dt_it_ops *iops;
343 struct fld_seq_param *param = NULL;
347 fld = ss->lss_site->ss_server_fld;
348 LASSERT(fld != NULL);
350 LPROCFS_ENTRY_CHECK(PDE(inode));
351 rc = seq_open(file, &fldb_sops);
357 seq = file->private_data;
362 OBD_ALLOC_PTR(param);
364 GOTO(out, rc = -ENOMEM);
366 rc = lu_env_init(¶m->fsp_env, LCT_MD_THREAD);
371 iops = &obj->do_index_ops->dio_it;
372 param->fsp_it = iops->init(¶m->fsp_env, obj, 0, NULL);
373 if (IS_ERR(param->fsp_it))
374 GOTO(out, rc = PTR_ERR(param->fsp_it));
376 param->fsp_fld = fld;
380 seq = file->private_data;
381 seq->private = param;
385 lu_env_fini(¶m->fsp_env);
392 static int fldb_seq_release(struct inode *inode, struct file *file)
394 struct seq_file *seq = file->private_data;
395 struct fld_seq_param *param;
396 struct lu_server_fld *fld;
397 struct dt_object *obj;
398 const struct dt_it_ops *iops;
400 param = seq->private;
402 lprocfs_seq_release(inode, file);
406 fld = param->fsp_fld;
408 LASSERT(obj != NULL);
409 iops = &obj->do_index_ops->dio_it;
411 LASSERT(iops != NULL);
412 LASSERT(param->fsp_it != NULL);
413 iops->fini(¶m->fsp_env, param->fsp_it);
414 lu_env_fini(¶m->fsp_env);
416 lprocfs_seq_release(inode, file);
421 static ssize_t fldb_seq_write(struct file *file, const char *buf,
422 size_t len, loff_t *off)
424 struct seq_file *seq = file->private_data;
425 struct fld_seq_param *param;
426 struct lu_seq_range range;
428 char *buffer, *_buffer;
431 param = seq->private;
435 OBD_ALLOC(buffer, len + 1);
438 memcpy(buffer, buf, len);
443 * format - [0x0000000200000007-0x0000000200000008):0:mdt
446 GOTO(out, rc = -EINVAL);
449 range.lsr_start = simple_strtoull(buffer, &buffer, 0);
451 GOTO(out, rc = -EINVAL);
454 range.lsr_end = simple_strtoull(buffer, &buffer, 0);
456 GOTO(out, rc = -EINVAL);
459 GOTO(out, rc = -EINVAL);
462 range.lsr_index = simple_strtoul(buffer, &buffer, 0);
464 GOTO(out, rc = -EINVAL);
467 if (strncmp(buffer, "mdt", 3) == 0)
468 range.lsr_flags = LU_SEQ_RANGE_MDT;
469 else if (strncmp(buffer, "ost", 3) == 0)
470 range.lsr_flags = LU_SEQ_RANGE_OST;
472 GOTO(out, rc = -EINVAL);
474 rc = seq_server_alloc_spec(param->fsp_seq->lss_site->ss_control_seq,
475 &range, ¶m->fsp_env);
478 OBD_FREE(_buffer, len + 1);
479 RETURN(rc < 0 ? rc : len);
482 const struct file_operations seq_fld_proc_seq_fops = {
483 .owner = THIS_MODULE,
484 .open = fldb_seq_open,
486 .write = fldb_seq_write,
487 .release = fldb_seq_release,
490 #endif /* HAVE_SERVER_SUPPORT */
492 /* Client side procfs stuff */
494 lprocfs_client_fid_space_seq_write(struct file *file, const char *buffer,
495 size_t count, loff_t *off)
497 struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private;
501 LASSERT(seq != NULL);
503 mutex_lock(&seq->lcs_mutex);
504 rc = lprocfs_fid_write_common(buffer, count, &seq->lcs_space);
506 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
507 seq->lcs_name, PRANGE(&seq->lcs_space));
510 mutex_unlock(&seq->lcs_mutex);
516 lprocfs_client_fid_space_seq_show(struct seq_file *m, void *unused)
518 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
522 LASSERT(seq != NULL);
524 mutex_lock(&seq->lcs_mutex);
525 rc = seq_printf(m, "["LPX64" - "LPX64"]:%x:%s\n",
526 PRANGE(&seq->lcs_space));
527 mutex_unlock(&seq->lcs_mutex);
533 lprocfs_client_fid_width_seq_write(struct file *file, const char *buffer,
534 size_t count, loff_t *off)
536 struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private;
541 LASSERT(seq != NULL);
543 mutex_lock(&seq->lcs_mutex);
545 rc = lprocfs_write_helper(buffer, count, &val);
547 mutex_unlock(&seq->lcs_mutex);
551 if (seq->lcs_type == LUSTRE_SEQ_DATA)
552 max = LUSTRE_DATA_SEQ_MAX_WIDTH;
554 max = LUSTRE_METADATA_SEQ_MAX_WIDTH;
556 if (val <= max && val > 0) {
557 seq->lcs_width = val;
560 CDEBUG(D_INFO, "%s: Sequence size: "LPU64"\n",
561 seq->lcs_name, seq->lcs_width);
564 mutex_unlock(&seq->lcs_mutex);
570 lprocfs_client_fid_width_seq_show(struct seq_file *m, void *unused)
572 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
576 LASSERT(seq != NULL);
578 mutex_lock(&seq->lcs_mutex);
579 rc = seq_printf(m, LPU64"\n", seq->lcs_width);
580 mutex_unlock(&seq->lcs_mutex);
586 lprocfs_client_fid_fid_seq_show(struct seq_file *m, void *unused)
588 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
592 LASSERT(seq != NULL);
594 mutex_lock(&seq->lcs_mutex);
595 rc = seq_printf(m, DFID"\n", PFID(&seq->lcs_fid));
596 mutex_unlock(&seq->lcs_mutex);
602 lprocfs_client_fid_server_seq_show(struct seq_file *m, void *unused)
604 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
605 struct client_obd *cli;
609 LASSERT(seq != NULL);
611 if (seq->lcs_exp != NULL) {
612 cli = &seq->lcs_exp->exp_obd->u.cli;
613 rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
615 rc = seq_printf(m, "%s\n", seq->lcs_srv->lss_name);
620 LPROC_SEQ_FOPS(lprocfs_client_fid_space);
621 LPROC_SEQ_FOPS(lprocfs_client_fid_width);
622 LPROC_SEQ_FOPS_RO(lprocfs_client_fid_server);
623 LPROC_SEQ_FOPS_RO(lprocfs_client_fid_fid);
625 struct lprocfs_seq_vars seq_client_proc_list[] = {
626 { "space", &lprocfs_client_fid_space_fops },
627 { "width", &lprocfs_client_fid_width_fops },
628 { "server", &lprocfs_client_fid_server_fops },
629 { "fid", &lprocfs_client_fid_fid_fops },