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) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 #define DEBUG_SUBSYSTEM S_CLASS
34 #include <linux/vfs.h>
35 #include <obd_class.h>
36 #include <lprocfs_status.h>
37 #include <lustre_osc.h>
38 #include <cl_object.h>
39 #include "mdc_internal.h"
41 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
44 struct obd_device *obd = container_of(kobj, struct obd_device,
46 struct obd_import *imp;
49 with_imp_locked(obd, imp, len)
50 len = sprintf(buf, "%d\n", !imp->imp_deactive);
54 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
55 const char *buffer, size_t count)
57 struct obd_device *obd = container_of(kobj, struct obd_device,
62 rc = kstrtobool(buffer, &val);
67 if (obd->u.cli.cl_import->imp_deactive == val)
68 rc = ptlrpc_set_import_active(obd->u.cli.cl_import, val);
70 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
75 LUSTRE_RW_ATTR(active);
77 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
78 struct attribute *attr,
81 struct obd_device *obd = container_of(kobj, struct obd_device,
86 max = obd_get_max_rpcs_in_flight(&obd->u.cli);
87 len = sprintf(buf, "%u\n", max);
92 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
93 struct attribute *attr,
97 struct obd_device *obd = container_of(kobj, struct obd_device,
102 rc = kstrtouint(buffer, 10, &val);
106 rc = obd_set_max_rpcs_in_flight(&obd->u.cli, val);
112 LUSTRE_RW_ATTR(max_rpcs_in_flight);
114 static ssize_t max_mod_rpcs_in_flight_show(struct kobject *kobj,
115 struct attribute *attr,
118 struct obd_device *obd = container_of(kobj, struct obd_device,
122 max = obd_get_max_mod_rpcs_in_flight(&obd->u.cli);
123 return sprintf(buf, "%hu\n", max);
126 static ssize_t max_mod_rpcs_in_flight_store(struct kobject *kobj,
127 struct attribute *attr,
131 struct obd_device *obd = container_of(kobj, struct obd_device,
136 rc = kstrtou16(buffer, 10, &val);
140 rc = obd_set_max_mod_rpcs_in_flight(&obd->u.cli, val);
146 LUSTRE_RW_ATTR(max_mod_rpcs_in_flight);
148 static int mdc_max_dirty_mb_seq_show(struct seq_file *m, void *v)
150 struct obd_device *obd = m->private;
151 struct client_obd *cli = &obd->u.cli;
154 spin_lock(&cli->cl_loi_list_lock);
155 val = PAGES_TO_MiB(cli->cl_dirty_max_pages);
156 spin_unlock(&cli->cl_loi_list_lock);
158 seq_printf(m, "%lu\n", val);
162 static ssize_t mdc_max_dirty_mb_seq_write(struct file *file,
163 const char __user *buffer,
164 size_t count, loff_t *off)
166 struct seq_file *sfl = file->private_data;
167 struct obd_device *obd = sfl->private;
168 struct client_obd *cli = &obd->u.cli;
169 char kernbuf[22] = "";
173 if (count >= sizeof(kernbuf))
176 if (copy_from_user(kernbuf, buffer, count))
180 rc = sysfs_memparse(kernbuf, count, &pages_number, "MiB");
185 pages_number = round_up(pages_number, 1024 * 1024) >> PAGE_SHIFT;
186 if (pages_number <= 0 ||
187 pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
188 pages_number > cfs_totalram_pages() / 4) /* 1/4 of RAM */
191 spin_lock(&cli->cl_loi_list_lock);
192 cli->cl_dirty_max_pages = pages_number;
193 osc_wake_cache_waiters(cli);
194 spin_unlock(&cli->cl_loi_list_lock);
198 LPROC_SEQ_FOPS(mdc_max_dirty_mb);
200 static ssize_t contention_seconds_show(struct kobject *kobj,
201 struct attribute *attr,
204 struct obd_device *obd = container_of(kobj, struct obd_device,
206 struct osc_device *od = obd2osc_dev(obd);
208 return sprintf(buf, "%lld\n", od->od_contention_time);
211 static ssize_t contention_seconds_store(struct kobject *kobj,
212 struct attribute *attr,
216 struct obd_device *obd = container_of(kobj, struct obd_device,
218 struct osc_device *od = obd2osc_dev(obd);
222 rc = kstrtoll(buffer, 0, &val);
226 od->od_contention_time = val;
230 LUSTRE_RW_ATTR(contention_seconds);
232 LUSTRE_ATTR(mds_conn_uuid, 0444, conn_uuid_show, NULL);
233 LUSTRE_RO_ATTR(conn_uuid);
235 LUSTRE_RW_ATTR(ping);
237 static int mdc_cached_mb_seq_show(struct seq_file *m, void *v)
239 struct obd_device *obd = m->private;
240 struct client_obd *cli = &obd->u.cli;
241 int shift = 20 - PAGE_SHIFT;
243 seq_printf(m, "used_mb: %ld\n"
246 (atomic_long_read(&cli->cl_lru_in_list) +
247 atomic_long_read(&cli->cl_lru_busy)) >> shift,
248 atomic_long_read(&cli->cl_lru_busy),
249 cli->cl_lru_reclaim);
254 /* shrink the number of caching pages to a specific number */
256 mdc_cached_mb_seq_write(struct file *file, const char __user *buffer,
257 size_t count, loff_t *off)
259 struct seq_file *sfl = file->private_data;
260 struct obd_device *obd = sfl->private;
261 struct client_obd *cli = &obd->u.cli;
267 if (count >= sizeof(kernbuf))
270 if (copy_from_user(kernbuf, buffer, count))
274 tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
275 rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
279 pages_number >>= PAGE_SHIFT;
281 rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
286 env = cl_env_get(&refcheck);
288 (void)osc_lru_shrink(env, cli, rc, true);
289 cl_env_put(env, &refcheck);
295 LPROC_SEQ_FOPS(mdc_cached_mb);
297 static int mdc_unstable_stats_seq_show(struct seq_file *m, void *v)
299 struct obd_device *obd = m->private;
300 struct client_obd *cli = &obd->u.cli;
304 pages = atomic_long_read(&cli->cl_unstable_count);
305 mb = (pages * PAGE_SIZE) >> 20;
307 seq_printf(m, "unstable_pages: %20ld\n"
308 "unstable_mb: %10d\n", pages, mb);
311 LPROC_SEQ_FOPS_RO(mdc_unstable_stats);
313 static ssize_t mdc_rpc_stats_seq_write(struct file *file,
314 const char __user *buf,
315 size_t len, loff_t *off)
317 struct seq_file *seq = file->private_data;
318 struct obd_device *obd = seq->private;
319 struct client_obd *cli = &obd->u.cli;
321 lprocfs_oh_clear(&cli->cl_mod_rpcs_hist);
323 lprocfs_oh_clear(&cli->cl_read_rpc_hist);
324 lprocfs_oh_clear(&cli->cl_write_rpc_hist);
325 lprocfs_oh_clear(&cli->cl_read_page_hist);
326 lprocfs_oh_clear(&cli->cl_write_page_hist);
327 lprocfs_oh_clear(&cli->cl_read_offset_hist);
328 lprocfs_oh_clear(&cli->cl_write_offset_hist);
333 static int mdc_rpc_stats_seq_show(struct seq_file *seq, void *v)
335 struct obd_device *obd = seq->private;
336 struct client_obd *cli = &obd->u.cli;
337 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
340 obd_mod_rpc_stats_seq_show(cli, seq);
342 spin_lock(&cli->cl_loi_list_lock);
344 seq_printf(seq, "\nread RPCs in flight: %d\n",
345 cli->cl_r_in_flight);
346 seq_printf(seq, "write RPCs in flight: %d\n",
347 cli->cl_w_in_flight);
348 seq_printf(seq, "pending write pages: %d\n",
349 atomic_read(&cli->cl_pending_w_pages));
350 seq_printf(seq, "pending read pages: %d\n",
351 atomic_read(&cli->cl_pending_r_pages));
353 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
354 seq_printf(seq, "pages per rpc rpcs %% cum %% |");
355 seq_printf(seq, " rpcs %% cum %%\n");
357 read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
358 write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
362 for (i = 0; i < OBD_HIST_MAX; i++) {
363 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
364 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
368 seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
369 1 << i, r, pct(r, read_tot),
370 pct(read_cum, read_tot), w,
372 pct(write_cum, write_tot));
373 if (read_cum == read_tot && write_cum == write_tot)
377 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
378 seq_printf(seq, "rpcs in flight rpcs %% cum %% |");
379 seq_printf(seq, " rpcs %% cum %%\n");
381 read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
382 write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
386 for (i = 0; i < OBD_HIST_MAX; i++) {
387 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
388 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
392 seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
393 i, r, pct(r, read_tot), pct(read_cum, read_tot), w,
394 pct(w, write_tot), pct(write_cum, write_tot));
395 if (read_cum == read_tot && write_cum == write_tot)
399 seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
400 seq_printf(seq, "offset rpcs %% cum %% |");
401 seq_printf(seq, " rpcs %% cum %%\n");
403 read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
404 write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
408 for (i = 0; i < OBD_HIST_MAX; i++) {
409 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
410 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
414 seq_printf(seq, "%d:\t\t%10lu %3u %3u | %10lu %3u %3u\n",
415 (i == 0) ? 0 : 1 << (i - 1),
416 r, pct(r, read_tot), pct(read_cum, read_tot),
417 w, pct(w, write_tot), pct(write_cum, write_tot));
418 if (read_cum == read_tot && write_cum == write_tot)
421 spin_unlock(&cli->cl_loi_list_lock);
425 LPROC_SEQ_FOPS(mdc_rpc_stats);
427 static int mdc_stats_seq_show(struct seq_file *seq, void *v)
429 struct timespec64 now;
430 struct obd_device *obd = seq->private;
431 struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
433 ktime_get_real_ts64(&now);
435 seq_printf(seq, "snapshot_time: %lld.%09lu (secs.nsecs)\n",
436 (s64)now.tv_sec, now.tv_nsec);
437 seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
438 stats->os_lockless_writes);
439 seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
440 stats->os_lockless_reads);
441 seq_printf(seq, "lockless_truncate\t\t%llu\n",
442 stats->os_lockless_truncates);
446 static ssize_t mdc_stats_seq_write(struct file *file,
447 const char __user *buf,
448 size_t len, loff_t *off)
450 struct seq_file *seq = file->private_data;
451 struct obd_device *obd = seq->private;
452 struct osc_stats *stats = &obd2osc_dev(obd)->od_stats;
454 memset(stats, 0, sizeof(*stats));
457 LPROC_SEQ_FOPS(mdc_stats);
459 static int mdc_dom_min_repsize_seq_show(struct seq_file *m, void *v)
461 struct obd_device *obd = m->private;
463 seq_printf(m, "%u\n", obd->u.cli.cl_dom_min_inline_repsize);
468 static ssize_t mdc_dom_min_repsize_seq_write(struct file *file,
469 const char __user *buffer,
470 size_t count, loff_t *off)
472 struct seq_file *m = file->private_data;
473 struct obd_device *obd = m->private;
477 rc = kstrtouint_from_user(buffer, count, 0, &val);
481 if (val > MDC_DOM_MAX_INLINE_REPSIZE)
484 obd->u.cli.cl_dom_min_inline_repsize = val;
487 LPROC_SEQ_FOPS(mdc_dom_min_repsize);
489 LPROC_SEQ_FOPS_RO_TYPE(mdc, connect_flags);
490 LPROC_SEQ_FOPS_RO_TYPE(mdc, server_uuid);
491 LPROC_SEQ_FOPS_RO_TYPE(mdc, timeouts);
492 LPROC_SEQ_FOPS_RO_TYPE(mdc, state);
493 LPROC_SEQ_FOPS_RW_TYPE(mdc, obd_max_pages_per_rpc);
494 LPROC_SEQ_FOPS_RW_TYPE(mdc, import);
495 LPROC_SEQ_FOPS_RW_TYPE(mdc, pinger_recov);
497 struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
498 { .name = "connect_flags",
499 .fops = &mdc_connect_flags_fops },
500 { .name = "mds_server_uuid",
501 .fops = &mdc_server_uuid_fops },
502 { .name = "max_pages_per_rpc",
503 .fops = &mdc_obd_max_pages_per_rpc_fops },
504 { .name = "max_dirty_mb",
505 .fops = &mdc_max_dirty_mb_fops },
506 { .name = "mdc_cached_mb",
507 .fops = &mdc_cached_mb_fops },
508 { .name = "timeouts",
509 .fops = &mdc_timeouts_fops },
511 .fops = &mdc_import_fops },
513 .fops = &mdc_state_fops },
514 { .name = "pinger_recov",
515 .fops = &mdc_pinger_recov_fops },
516 { .name = "rpc_stats",
517 .fops = &mdc_rpc_stats_fops },
518 { .name = "unstable_stats",
519 .fops = &mdc_unstable_stats_fops },
520 { .name = "mdc_stats",
521 .fops = &mdc_stats_fops },
522 { .name = "mdc_dom_min_repsize",
523 .fops = &mdc_dom_min_repsize_fops },
527 static struct attribute *mdc_attrs[] = {
528 &lustre_attr_active.attr,
529 &lustre_attr_max_rpcs_in_flight.attr,
530 &lustre_attr_max_mod_rpcs_in_flight.attr,
531 &lustre_attr_contention_seconds.attr,
532 &lustre_attr_mds_conn_uuid.attr,
533 &lustre_attr_conn_uuid.attr,
534 &lustre_attr_ping.attr,
538 int mdc_tunables_init(struct obd_device *obd)
542 obd->obd_ktype.default_attrs = mdc_attrs;
543 obd->obd_vars = lprocfs_mdc_obd_vars;
545 rc = lprocfs_obd_setup(obd, false);
548 #ifdef CONFIG_PROC_FS
549 rc = lprocfs_alloc_md_stats(obd, 0);
551 lprocfs_obd_cleanup(obd);
555 rc = sptlrpc_lprocfs_cliobd_attach(obd);
557 #ifdef CONFIG_PROC_FS
558 lprocfs_free_md_stats(obd);
560 lprocfs_obd_cleanup(obd);
563 ptlrpc_lprocfs_register_obd(obd);