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/
31 * lustre/mdd/mdd_lproc.c
33 * Lustre Metadata Server (mdd) routines
35 * Author: Wang Di <wangdi@clusterfs.com>
38 #define DEBUG_SUBSYSTEM S_MDS
41 #include <obd_class.h>
42 #include <obd_support.h>
43 #include <lprocfs_status.h>
44 #include <libcfs/libcfs_string.h>
45 #include "mdd_internal.h"
47 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
50 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
52 struct obd_device *obd = mdd2obd_dev(mdd);
54 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
58 static ssize_t atime_diff_show(struct kobject *kobj, struct attribute *attr,
61 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
64 return sprintf(buf, "%lld\n", mdd->mdd_atime_diff);
67 static ssize_t atime_diff_store(struct kobject *kobj,
68 struct attribute *attr,
69 const char *buffer, size_t count)
71 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
76 rc = kstrtoll(buffer, 10, &diff);
80 mdd->mdd_atime_diff = diff;
83 LUSTRE_RW_ATTR(atime_diff);
85 /**** changelogs ****/
86 static int mdd_changelog_mask_seq_show(struct seq_file *m, void *data)
88 struct mdd_device *mdd = m->private;
92 if (mdd->mdd_cl.mc_mask & BIT(i))
93 seq_printf(m, "%s ", changelog_type2str(i));
101 mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
102 size_t count, loff_t *off)
104 struct seq_file *m = file->private_data;
105 struct mdd_device *mdd = m->private;
110 if (count >= PAGE_SIZE)
112 OBD_ALLOC(kernbuf, PAGE_SIZE);
115 if (copy_from_user(kernbuf, buffer, count))
116 GOTO(out, rc = -EFAULT);
119 rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
120 CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
124 OBD_FREE(kernbuf, PAGE_SIZE);
127 LDEBUGFS_SEQ_FOPS(mdd_changelog_mask);
129 static int lprocfs_changelog_users_cb(const struct lu_env *env,
130 struct llog_handle *llh,
131 struct llog_rec_hdr *hdr, void *data)
133 struct llog_changelog_user_rec *rec;
134 struct seq_file *m = data;
136 LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
138 rec = (struct llog_changelog_user_rec *)hdr;
140 seq_printf(m, CHANGELOG_USER_PREFIX"%-3d %llu (%u)\n",
141 rec->cur_id, rec->cur_endrec, (__u32)get_seconds() -
146 static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
149 struct mdd_device *mdd = m->private;
150 struct llog_ctxt *ctxt;
154 ctxt = llog_get_context(mdd2obd_dev(mdd),
155 LLOG_CHANGELOG_USER_ORIG_CTXT);
158 LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
160 rc = lu_env_init(&env, LCT_LOCAL);
166 spin_lock(&mdd->mdd_cl.mc_lock);
167 cur = mdd->mdd_cl.mc_index;
168 spin_unlock(&mdd->mdd_cl.mc_lock);
170 seq_printf(m, "current index: %llu\n", cur);
171 seq_printf(m, "%-5s %s %s\n", "ID", "index", "(idle seconds)");
173 llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
180 LDEBUGFS_SEQ_FOPS_RO(mdd_changelog_users);
182 static int mdd_changelog_size_ctxt(const struct lu_env *env,
183 struct mdd_device *mdd,
184 int index, __u64 *val)
186 struct llog_ctxt *ctxt;
188 ctxt = llog_get_context(mdd2obd_dev(mdd),
193 if (!(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) {
194 CERROR("%s: ChangeLog has wrong flags: rc = %d\n",
195 ctxt->loc_obd->obd_name, -EINVAL);
200 *val += llog_cat_size(env, ctxt->loc_handle);
207 static ssize_t changelog_size_show(struct kobject *kobj,
208 struct attribute *attr,
211 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
217 rc = lu_env_init(&env, LCT_LOCAL);
221 rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_ORIG_CTXT, &tmp);
227 rc = mdd_changelog_size_ctxt(&env, mdd, LLOG_CHANGELOG_USER_ORIG_CTXT,
230 rc = sprintf(buf, "%llu\n", tmp);
234 LUSTRE_RO_ATTR(changelog_size);
236 static ssize_t changelog_gc_show(struct kobject *kobj,
237 struct attribute *attr,
240 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
243 return sprintf(buf, "%u\n", mdd->mdd_changelog_gc);
246 static ssize_t changelog_gc_store(struct kobject *kobj,
247 struct attribute *attr,
248 const char *buffer, size_t count)
250 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
255 rc = kstrtobool(buffer, &val);
259 mdd->mdd_changelog_gc = val;
263 LUSTRE_RW_ATTR(changelog_gc);
265 static ssize_t changelog_max_idle_time_show(struct kobject *kobj,
266 struct attribute *attr,
269 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
272 return sprintf(buf, "%lld\n", mdd->mdd_changelog_max_idle_time);
275 static ssize_t changelog_max_idle_time_store(struct kobject *kobj,
276 struct attribute *attr,
277 const char *buffer, size_t count)
279 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
284 rc = kstrtoll(buffer, 10, &val);
288 /* as it sounds reasonable, do not allow a user to be idle since
289 * more than about 68 years, this will allow to use 32bits
290 * timestamps for comparison
292 if (val < 1 || val > INT_MAX)
295 mdd->mdd_changelog_max_idle_time = val;
299 LUSTRE_RW_ATTR(changelog_max_idle_time);
301 static ssize_t changelog_max_idle_indexes_show(struct kobject *kobj,
302 struct attribute *attr,
305 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
308 return sprintf(buf, "%lu\n", mdd->mdd_changelog_max_idle_indexes);
311 static ssize_t changelog_max_idle_indexes_store(struct kobject *kobj,
312 struct attribute *attr,
316 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
321 LASSERT(mdd != NULL);
322 rc = kstrtoul(buffer, 0, &val);
326 /* XXX may need to limit/check with reasonable elapsed/idle indexes */
327 /* XXX may better allow to specify a % of full ChangeLogs */
329 mdd->mdd_changelog_max_idle_indexes = val;
333 LUSTRE_RW_ATTR(changelog_max_idle_indexes);
335 static ssize_t changelog_min_gc_interval_show(struct kobject *kobj,
336 struct attribute *attr,
339 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
342 return sprintf(buf, "%lld\n", mdd->mdd_changelog_min_gc_interval);
345 static ssize_t changelog_min_gc_interval_store(struct kobject *kobj,
346 struct attribute *attr,
350 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
355 rc = kstrtoll(buffer, 10, &val);
359 /* XXX may need to limit with reasonable elapsed/interval times */
363 mdd->mdd_changelog_min_gc_interval = val;
367 LUSTRE_RW_ATTR(changelog_min_gc_interval);
369 static ssize_t changelog_min_free_cat_entries_show(struct kobject *kobj,
370 struct attribute *attr,
373 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
376 return sprintf(buf, "%u\n", mdd->mdd_changelog_min_free_cat_entries);
379 static ssize_t changelog_min_free_cat_entries_store(struct kobject *kobj,
380 struct attribute *attr,
384 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
389 rc = kstrtouint(buffer, 10, &val);
393 /* XXX may need to limit with more reasonable number of free entries */
397 mdd->mdd_changelog_min_free_cat_entries = val;
401 LUSTRE_RW_ATTR(changelog_min_free_cat_entries);
403 static ssize_t changelog_deniednext_show(struct kobject *kobj,
404 struct attribute *attr,
407 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
410 return sprintf(buf, "%u\n", mdd->mdd_cl.mc_deniednext);
413 static ssize_t changelog_deniednext_store(struct kobject *kobj,
414 struct attribute *attr,
418 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
420 unsigned int time = 0;
423 rc = kstrtouint(buffer, 0, &time);
427 mdd->mdd_cl.mc_deniednext = time;
430 LUSTRE_RW_ATTR(changelog_deniednext);
432 static ssize_t sync_permission_show(struct kobject *kobj,
433 struct attribute *attr, char *buf)
435 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
438 return sprintf(buf, "%d\n", mdd->mdd_sync_permission);
441 static ssize_t sync_permission_store(struct kobject *kobj,
442 struct attribute *attr,
443 const char *buffer, size_t count)
445 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
450 rc = kstrtobool(buffer, &val);
454 mdd->mdd_sync_permission = val;
458 LUSTRE_RW_ATTR(sync_permission);
460 static ssize_t lfsck_speed_limit_show(struct kobject *kobj,
461 struct attribute *attr, char *buf)
463 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
466 return lfsck_get_speed(buf, mdd->mdd_bottom);
469 static ssize_t lfsck_speed_limit_store(struct kobject *kobj,
470 struct attribute *attr,
471 const char *buffer, size_t count)
473 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
478 rc = kstrtouint(buffer, 10, &val);
482 rc = lfsck_set_speed(mdd->mdd_bottom, val);
483 return rc != 0 ? rc : count;
485 LUSTRE_RW_ATTR(lfsck_speed_limit);
487 static ssize_t lfsck_async_windows_show(struct kobject *kobj,
488 struct attribute *attr, char *buf)
490 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
493 return lfsck_get_windows(buf, mdd->mdd_bottom);
496 static ssize_t lfsck_async_windows_store(struct kobject *kobj,
497 struct attribute *attr,
498 const char *buffer, size_t count)
500 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
505 rc = kstrtouint(buffer, 10, &val);
509 rc = lfsck_set_windows(mdd->mdd_bottom, val);
511 return rc != 0 ? rc : count;
513 LUSTRE_RW_ATTR(lfsck_async_windows);
515 static int mdd_lfsck_namespace_seq_show(struct seq_file *m, void *data)
517 struct mdd_device *mdd = m->private;
519 LASSERT(mdd != NULL);
521 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_NAMESPACE);
523 LDEBUGFS_SEQ_FOPS_RO(mdd_lfsck_namespace);
525 static int mdd_lfsck_layout_seq_show(struct seq_file *m, void *data)
527 struct mdd_device *mdd = m->private;
529 LASSERT(mdd != NULL);
531 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_LAYOUT);
533 LDEBUGFS_SEQ_FOPS_RO(mdd_lfsck_layout);
536 * Show default number of stripes for O_APPEND files.
538 * \param[in] m seq file
539 * \param[in] v unused for single entry
541 * \retval 0 on success,
542 * \retval negative error code if failed
544 static ssize_t append_stripe_count_show(struct kobject *kobj,
545 struct attribute *attr, char *buf)
547 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
550 return scnprintf(buf, PAGE_SIZE, "%d\n", mdd->mdd_append_stripe_count);
554 * Set default number of stripes for O_APPEND files.
556 * \param[in] file proc file
557 * \param[in] buffer string containing the default number of stripes
559 * \param[in] count @buffer length
560 * \param[in] off unused for single entry
562 * \retval @count on success
563 * \retval negative error code otherwise
565 static ssize_t append_stripe_count_store(struct kobject *kobj,
566 struct attribute *attr,
567 const char *buffer, size_t count)
569 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
574 rc = kstrtoint(buffer, 0, &stripe_count);
578 if (stripe_count < -1)
581 mdd->mdd_append_stripe_count = stripe_count;
585 LUSTRE_RW_ATTR(append_stripe_count);
588 * Show default OST pool for O_APPEND files.
590 * \param[in] kobject proc object
591 * \param[in] attribute proc attribute
592 * \param[in] buf output buffer
594 * \retval 0 on success,
595 * \retval negative error code if failed
597 static ssize_t append_pool_show(struct kobject *kobj,
598 struct attribute *attr, char *buf)
600 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
603 return scnprintf(buf, PAGE_SIZE, "%s\n", mdd->mdd_append_pool);
607 * Set default OST pool for O_APPEND files.
609 * \param[in] kobject proc object
610 * \param[in] attribute proc attribute
611 * \param[in] buffer user inputted pool name
612 * \param[in] count @buffer length
614 * \retval @count on success
615 * \retval negative error code otherwise
617 static ssize_t append_pool_store(struct kobject *kobj, struct attribute *attr,
618 const char *buffer, size_t count)
620 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
623 if (!count || count > LOV_MAXPOOLNAME + 1)
626 /* clear previous value */
627 memset(mdd->mdd_append_pool, 0, LOV_MAXPOOLNAME + 1);
629 /* entering "none" clears the pool, otherwise copy the new pool */
630 if (strncmp("none", buffer, 4)) {
631 memcpy(mdd->mdd_append_pool, buffer, count);
633 /* Trim the trailing '\n' if any */
634 if (mdd->mdd_append_pool[count - 1] == '\n') {
635 /* Don't echo just a newline */
638 mdd->mdd_append_pool[count - 1] = 0;
644 LUSTRE_RW_ATTR(append_pool);
646 static struct ldebugfs_vars ldebugfs_mdd_obd_vars[] = {
647 { .name = "changelog_mask",
648 .fops = &mdd_changelog_mask_fops },
649 { .name = "changelog_users",
650 .fops = &mdd_changelog_users_fops },
651 { .name = "lfsck_namespace",
652 .fops = &mdd_lfsck_namespace_fops },
653 { .name = "lfsck_layout",
654 .fops = &mdd_lfsck_layout_fops },
658 static struct attribute *mdd_attrs[] = {
659 &lustre_attr_uuid.attr,
660 &lustre_attr_atime_diff.attr,
661 &lustre_attr_changelog_size.attr,
662 &lustre_attr_changelog_gc.attr,
663 &lustre_attr_changelog_max_idle_time.attr,
664 &lustre_attr_changelog_max_idle_indexes.attr,
665 &lustre_attr_changelog_min_gc_interval.attr,
666 &lustre_attr_changelog_min_free_cat_entries.attr,
667 &lustre_attr_changelog_deniednext.attr,
668 &lustre_attr_lfsck_async_windows.attr,
669 &lustre_attr_lfsck_speed_limit.attr,
670 &lustre_attr_sync_permission.attr,
671 &lustre_attr_append_stripe_count.attr,
672 &lustre_attr_append_pool.attr,
676 static void mdd_sysfs_release(struct kobject *kobj)
678 struct mdd_device *mdd = container_of(kobj, struct mdd_device,
680 struct obd_device *obd = mdd2obd_dev(mdd);
682 debugfs_remove_recursive(obd->obd_debugfs_entry);
683 obd->obd_debugfs_entry = NULL;
685 complete(&mdd->mdd_kobj_unregister);
688 int mdd_procfs_init(struct mdd_device *mdd, const char *name)
690 struct obd_device *obd = mdd2obd_dev(mdd);
691 struct obd_type *type;
695 /* at the moment there is no linkage between lu_type
696 * and obd_type, so we lookup obd_type this way
698 type = class_search_type(LUSTRE_MDD_NAME);
700 LASSERT(name != NULL);
701 LASSERT(type != NULL);
702 LASSERT(obd != NULL);
704 /* put reference taken by class_search_type */
705 kobject_put(&type->typ_kobj);
707 mdd->mdd_ktype.default_attrs = mdd_attrs;
708 mdd->mdd_ktype.release = mdd_sysfs_release;
709 mdd->mdd_ktype.sysfs_ops = &lustre_sysfs_ops;
711 init_completion(&mdd->mdd_kobj_unregister);
712 rc = kobject_init_and_add(&mdd->mdd_kobj, &mdd->mdd_ktype,
713 &type->typ_kobj, "%s", name);
717 /* Find the type procroot and add the proc entry for this device */
718 obd->obd_debugfs_vars = ldebugfs_mdd_obd_vars;
719 obd->obd_debugfs_entry = debugfs_create_dir(name,
720 type->typ_debugfs_entry);
721 ldebugfs_add_vars(obd->obd_debugfs_entry, obd->obd_debugfs_vars, mdd);
726 void mdd_procfs_fini(struct mdd_device *mdd)
728 kobject_put(&mdd->mdd_kobj);
729 wait_for_completion(&mdd->mdd_kobj_unregister);