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) 2012, 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/mdd/mdd_lproc.c
34 * Lustre Metadata Server (mdd) routines
36 * Author: Wang Di <wangdi@clusterfs.com>
39 #define DEBUG_SUBSYSTEM S_MDS
42 #include <obd_class.h>
43 #include <obd_support.h>
44 #include <lprocfs_status.h>
45 #include <libcfs/libcfs_string.h>
46 #include "mdd_internal.h"
49 mdd_atime_diff_seq_write(struct file *file, const char __user *buffer,
50 size_t count, loff_t *off)
52 struct seq_file *m = file->private_data;
53 struct mdd_device *mdd = m->private;
57 rc = kstrtoll_from_user(buffer, count, 0, &diff);
61 mdd->mdd_atime_diff = diff;
65 static int mdd_atime_diff_seq_show(struct seq_file *m, void *data)
67 struct mdd_device *mdd = m->private;
69 seq_printf(m, "%lld\n", mdd->mdd_atime_diff);
72 LPROC_SEQ_FOPS(mdd_atime_diff);
74 /**** changelogs ****/
75 static int mdd_changelog_mask_seq_show(struct seq_file *m, void *data)
77 struct mdd_device *mdd = m->private;
81 if (mdd->mdd_cl.mc_mask & (1 << i))
82 seq_printf(m, "%s ", changelog_type2str(i));
90 mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
91 size_t count, loff_t *off)
93 struct seq_file *m = file->private_data;
94 struct mdd_device *mdd = m->private;
99 if (count >= PAGE_SIZE)
101 OBD_ALLOC(kernbuf, PAGE_SIZE);
104 if (copy_from_user(kernbuf, buffer, count))
105 GOTO(out, rc = -EFAULT);
108 rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
109 CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
113 OBD_FREE(kernbuf, PAGE_SIZE);
116 LPROC_SEQ_FOPS(mdd_changelog_mask);
118 static int lprocfs_changelog_users_cb(const struct lu_env *env,
119 struct llog_handle *llh,
120 struct llog_rec_hdr *hdr, void *data)
122 struct llog_changelog_user_rec *rec;
123 struct seq_file *m = data;
125 LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
127 rec = (struct llog_changelog_user_rec *)hdr;
129 seq_printf(m, CHANGELOG_USER_PREFIX"%-3d %llu (%u)\n",
130 rec->cur_id, rec->cur_endrec, (__u32)get_seconds() -
135 static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
138 struct mdd_device *mdd = m->private;
139 struct llog_ctxt *ctxt;
143 ctxt = llog_get_context(mdd2obd_dev(mdd),
144 LLOG_CHANGELOG_USER_ORIG_CTXT);
147 LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
149 rc = lu_env_init(&env, LCT_LOCAL);
155 spin_lock(&mdd->mdd_cl.mc_lock);
156 cur = mdd->mdd_cl.mc_index;
157 spin_unlock(&mdd->mdd_cl.mc_lock);
159 seq_printf(m, "current index: %llu\n", cur);
160 seq_printf(m, "%-5s %s %s\n", "ID", "index", "(idle seconds)");
162 llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
169 LPROC_SEQ_FOPS_RO(mdd_changelog_users);
171 static int mdd_changelog_size_ctxt(const struct lu_env *env,
172 struct mdd_device *mdd,
173 int index, __u64 *val)
175 struct llog_ctxt *ctxt;
177 ctxt = llog_get_context(mdd2obd_dev(mdd),
182 if (!(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) {
183 CERROR("%s: ChangeLog has wrong flags: rc = %d\n",
184 ctxt->loc_obd->obd_name, -EINVAL);
189 *val += llog_cat_size(env, ctxt->loc_handle);
196 static int mdd_changelog_size_seq_show(struct seq_file *m, void *data)
199 struct mdd_device *mdd = m->private;
203 rc = lu_env_init(&env, LCT_LOCAL);
207 rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_ORIG_CTXT, &tmp);
213 rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_USER_ORIG_CTXT,
216 seq_printf(m, "%llu\n", tmp);
220 LPROC_SEQ_FOPS_RO(mdd_changelog_size);
222 static int mdd_changelog_gc_seq_show(struct seq_file *m, void *data)
224 struct mdd_device *mdd = m->private;
226 LASSERT(mdd != NULL);
227 seq_printf(m, "%u\n", mdd->mdd_changelog_gc);
232 mdd_changelog_gc_seq_write(struct file *file, const char __user *buffer,
233 size_t count, loff_t *off)
235 struct seq_file *m = file->private_data;
236 struct mdd_device *mdd = m->private;
240 LASSERT(mdd != NULL);
241 rc = kstrtobool_from_user(buffer, count, &val);
245 mdd->mdd_changelog_gc = val;
249 LPROC_SEQ_FOPS(mdd_changelog_gc);
251 static int mdd_changelog_max_idle_time_seq_show(struct seq_file *m, void *data)
253 struct mdd_device *mdd = m->private;
255 LASSERT(mdd != NULL);
256 seq_printf(m, "%lld\n", mdd->mdd_changelog_max_idle_time);
261 mdd_changelog_max_idle_time_seq_write(struct file *file,
262 const char __user *buffer, size_t count,
265 struct seq_file *m = file->private_data;
266 struct mdd_device *mdd = m->private;
270 LASSERT(mdd != NULL);
272 rc = kstrtoll_from_user(buffer, count, 0, &val);
276 /* as it sounds reasonable, do not allow a user to be idle since
277 * more than about 68 years, this will allow to use 32bits
278 * timestamps for comparison
280 if (val < 1 || val > INT_MAX)
283 mdd->mdd_changelog_max_idle_time = val;
287 LPROC_SEQ_FOPS(mdd_changelog_max_idle_time);
289 static int mdd_changelog_max_idle_indexes_seq_show(struct seq_file *m,
292 struct mdd_device *mdd = m->private;
294 LASSERT(mdd != NULL);
295 seq_printf(m, "%lu\n", mdd->mdd_changelog_max_idle_indexes);
300 mdd_changelog_max_idle_indexes_seq_write(struct file *file,
301 const char __user *buffer,
302 size_t count, loff_t *off)
304 struct seq_file *m = file->private_data;
305 struct mdd_device *mdd = m->private;
309 LASSERT(mdd != NULL);
310 rc = kstrtoul_from_user(buffer, count, 0, &val);
314 /* XXX may need to limit/check with reasonable elapsed/idle indexes */
315 /* XXX may better allow to specify a % of full ChangeLogs */
317 mdd->mdd_changelog_max_idle_indexes = val;
321 LPROC_SEQ_FOPS(mdd_changelog_max_idle_indexes);
323 static int mdd_changelog_min_gc_interval_seq_show(struct seq_file *m,
326 struct mdd_device *mdd = m->private;
328 LASSERT(mdd != NULL);
329 seq_printf(m, "%lld\n", mdd->mdd_changelog_min_gc_interval);
334 mdd_changelog_min_gc_interval_seq_write(struct file *file,
335 const char __user *buffer,
336 size_t count, loff_t *off)
338 struct seq_file *m = file->private_data;
339 struct mdd_device *mdd = m->private;
343 LASSERT(mdd != NULL);
344 rc = kstrtoll_from_user(buffer, count, 0, &val);
348 /* XXX may need to limit with reasonable elapsed/interval times */
352 mdd->mdd_changelog_min_gc_interval = val;
356 LPROC_SEQ_FOPS(mdd_changelog_min_gc_interval);
358 static int mdd_changelog_min_free_cat_entries_seq_show(struct seq_file *m,
361 struct mdd_device *mdd = m->private;
363 LASSERT(mdd != NULL);
364 seq_printf(m, "%u\n", mdd->mdd_changelog_min_free_cat_entries);
369 mdd_changelog_min_free_cat_entries_seq_write(struct file *file,
370 const char __user *buffer,
371 size_t count, loff_t *off)
373 struct seq_file *m = file->private_data;
374 struct mdd_device *mdd = m->private;
378 LASSERT(mdd != NULL);
379 rc = kstrtouint_from_user(buffer, count, 0, &val);
383 /* XXX may need to limit with more reasonable number of free entries */
387 mdd->mdd_changelog_min_free_cat_entries = val;
391 LPROC_SEQ_FOPS(mdd_changelog_min_free_cat_entries);
393 static int mdd_changelog_deniednext_seq_show(struct seq_file *m, void *data)
395 struct mdd_device *mdd = m->private;
397 seq_printf(m, "%u\n", mdd->mdd_cl.mc_deniednext);
402 mdd_changelog_deniednext_seq_write(struct file *file, const char __user *buffer,
403 size_t count, loff_t *off)
405 struct seq_file *m = file->private_data;
406 struct mdd_device *mdd = m->private;
408 unsigned int time = 0;
411 if (count > (sizeof(kernbuf) - 1))
414 if (copy_from_user(kernbuf, buffer, count))
417 kernbuf[count] = '\0';
419 rc = kstrtoul(kernbuf, 0, (unsigned long int *)&time);
423 mdd->mdd_cl.mc_deniednext = time;
426 LPROC_SEQ_FOPS(mdd_changelog_deniednext);
428 static int mdd_sync_perm_seq_show(struct seq_file *m, void *data)
430 struct mdd_device *mdd = m->private;
432 LASSERT(mdd != NULL);
433 seq_printf(m, "%d\n", mdd->mdd_sync_permission);
438 mdd_sync_perm_seq_write(struct file *file, const char __user *buffer,
439 size_t count, loff_t *off)
441 struct seq_file *m = file->private_data;
442 struct mdd_device *mdd = m->private;
446 LASSERT(mdd != NULL);
447 rc = kstrtobool_from_user(buffer, count, &val);
451 mdd->mdd_sync_permission = val;
455 LPROC_SEQ_FOPS(mdd_sync_perm);
457 static int mdd_lfsck_speed_limit_seq_show(struct seq_file *m, void *data)
459 struct mdd_device *mdd = m->private;
461 LASSERT(mdd != NULL);
462 return lfsck_get_speed(m, mdd->mdd_bottom);
466 mdd_lfsck_speed_limit_seq_write(struct file *file, const char __user *buffer,
467 size_t count, loff_t *off)
469 struct seq_file *m = file->private_data;
470 struct mdd_device *mdd = m->private;
474 LASSERT(mdd != NULL);
475 rc = kstrtouint_from_user(buffer, count, 0, &val);
479 rc = lfsck_set_speed(mdd->mdd_bottom, val);
480 return rc != 0 ? rc : count;
482 LPROC_SEQ_FOPS(mdd_lfsck_speed_limit);
484 static int mdd_lfsck_async_windows_seq_show(struct seq_file *m, void *data)
486 struct mdd_device *mdd = m->private;
488 LASSERT(mdd != NULL);
489 return lfsck_get_windows(m, mdd->mdd_bottom);
493 mdd_lfsck_async_windows_seq_write(struct file *file, const char __user *buffer,
494 size_t count, loff_t *off)
496 struct seq_file *m = file->private_data;
497 struct mdd_device *mdd = m->private;
501 LASSERT(mdd != NULL);
502 rc = kstrtouint_from_user(buffer, count, 0, &val);
506 rc = lfsck_set_windows(mdd->mdd_bottom, val);
508 return rc != 0 ? rc : count;
510 LPROC_SEQ_FOPS(mdd_lfsck_async_windows);
512 static int mdd_lfsck_namespace_seq_show(struct seq_file *m, void *data)
514 struct mdd_device *mdd = m->private;
516 LASSERT(mdd != NULL);
518 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_NAMESPACE);
520 LPROC_SEQ_FOPS_RO(mdd_lfsck_namespace);
522 static int mdd_lfsck_layout_seq_show(struct seq_file *m, void *data)
524 struct mdd_device *mdd = m->private;
526 LASSERT(mdd != NULL);
528 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_LAYOUT);
530 LPROC_SEQ_FOPS_RO(mdd_lfsck_layout);
532 static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
533 { .name = "atime_diff",
534 .fops = &mdd_atime_diff_fops },
535 { .name = "changelog_mask",
536 .fops = &mdd_changelog_mask_fops },
537 { .name = "changelog_users",
538 .fops = &mdd_changelog_users_fops },
539 { .name = "changelog_size",
540 .fops = &mdd_changelog_size_fops },
541 { .name = "changelog_gc",
542 .fops = &mdd_changelog_gc_fops },
543 { .name = "changelog_max_idle_time",
544 .fops = &mdd_changelog_max_idle_time_fops },
545 { .name = "changelog_max_idle_indexes",
546 .fops = &mdd_changelog_max_idle_indexes_fops },
547 { .name = "changelog_min_gc_interval",
548 .fops = &mdd_changelog_min_gc_interval_fops },
549 { .name = "changelog_min_free_cat_entries",
550 .fops = &mdd_changelog_min_free_cat_entries_fops },
551 { .name = "changelog_deniednext",
552 .fops = &mdd_changelog_deniednext_fops },
553 { .name = "sync_permission",
554 .fops = &mdd_sync_perm_fops },
555 { .name = "lfsck_speed_limit",
556 .fops = &mdd_lfsck_speed_limit_fops },
557 { .name = "lfsck_async_windows",
558 .fops = &mdd_lfsck_async_windows_fops },
559 { .name = "lfsck_namespace",
560 .fops = &mdd_lfsck_namespace_fops },
561 { .name = "lfsck_layout",
562 .fops = &mdd_lfsck_layout_fops },
566 int mdd_procfs_init(struct mdd_device *mdd, const char *name)
568 struct obd_device *obd = mdd2obd_dev(mdd);
569 struct obd_type *type;
573 /* at the moment there is no linkage between lu_type
574 * and obd_type, so we lookup obd_type this way */
575 type = class_search_type(LUSTRE_MDD_NAME);
577 LASSERT(name != NULL);
578 LASSERT(type != NULL);
579 LASSERT(obd != NULL);
581 /* Find the type procroot and add the proc entry for this device */
582 obd->obd_vars = lprocfs_mdd_obd_vars;
583 mdd->mdd_proc_entry = lprocfs_register(name, type->typ_procroot,
585 if (IS_ERR(mdd->mdd_proc_entry)) {
586 rc = PTR_ERR(mdd->mdd_proc_entry);
587 CERROR("Error %d setting up lprocfs for %s\n",
589 mdd->mdd_proc_entry = NULL;
596 mdd_procfs_fini(mdd);
600 void mdd_procfs_fini(struct mdd_device *mdd)
602 if (mdd->mdd_proc_entry)
603 lprocfs_remove(&mdd->mdd_proc_entry);