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) 2008, 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/osd/osd_lproc.c
38 * Author: Mikhail Pershin <tappro@sun.com>
41 #define DEBUG_SUBSYSTEM S_OSD
43 #include <lprocfs_status.h>
44 #include <lustre/lustre_idl.h>
46 #include "osd_internal.h"
50 void osd_brw_stats_update(struct osd_device *osd, struct osd_iobuf *iobuf)
52 struct brw_stats *s = &osd->od_brw_stats;
53 unsigned long *last_block = NULL;
54 struct page **pages = iobuf->dr_pages;
55 struct page *last_page = NULL;
56 unsigned long discont_pages = 0;
57 unsigned long discont_blocks = 0;
58 unsigned long *blocks = iobuf->dr_blocks;
59 int i, nr_pages = iobuf->dr_npages;
61 int rw = iobuf->dr_rw;
63 if (unlikely(nr_pages == 0))
66 blocks_per_page = PAGE_CACHE_SIZE >> osd_sb(osd)->s_blocksize_bits;
68 lprocfs_oh_tally_log2(&s->hist[BRW_R_PAGES+rw], nr_pages);
70 while (nr_pages-- > 0) {
71 if (last_page && (*pages)->index != (last_page->index + 1))
75 for (i = 0; i < blocks_per_page; i++) {
76 if (last_block && *blocks != (*last_block + 1))
78 last_block = blocks++;
82 lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_PAGES+rw], discont_pages);
83 lprocfs_oh_tally(&s->hist[BRW_R_DISCONT_BLOCKS+rw], discont_blocks);
86 #define pct(a, b) (b ? a * 100 / b : 0)
88 static void display_brw_stats(struct seq_file *seq, char *name, char *units,
89 struct obd_histogram *read, struct obd_histogram *write, int scale)
91 unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
94 seq_printf(seq, "\n%26s read | write\n", " ");
95 seq_printf(seq, "%-22s %-5s %% cum %% | %-11s %% cum %%\n",
98 read_tot = lprocfs_oh_sum(read);
99 write_tot = lprocfs_oh_sum(write);
100 for (i = 0; i < OBD_HIST_MAX; i++) {
101 r = read->oh_buckets[i];
102 w = write->oh_buckets[i];
105 if (read_cum == 0 && write_cum == 0)
109 seq_printf(seq, "%u", i);
111 seq_printf(seq, "%u", scale << i);
113 seq_printf(seq, "%uK", scale << (i-10));
115 seq_printf(seq, "%uM", scale << (i-20));
117 seq_printf(seq, ":\t\t%10lu %3lu %3lu | %4lu %3lu %3lu\n",
118 r, pct(r, read_tot), pct(read_cum, read_tot),
119 w, pct(w, write_tot), pct(write_cum, write_tot));
121 if (read_cum == read_tot && write_cum == write_tot)
126 static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
130 /* this sampling races with updates */
131 do_gettimeofday(&now);
132 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
133 now.tv_sec, now.tv_usec);
135 display_brw_stats(seq, "pages per bulk r/w", "rpcs",
136 &brw_stats->hist[BRW_R_PAGES],
137 &brw_stats->hist[BRW_W_PAGES], 1);
139 display_brw_stats(seq, "discontiguous pages", "rpcs",
140 &brw_stats->hist[BRW_R_DISCONT_PAGES],
141 &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
143 display_brw_stats(seq, "discontiguous blocks", "rpcs",
144 &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
145 &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
147 display_brw_stats(seq, "disk fragmented I/Os", "ios",
148 &brw_stats->hist[BRW_R_DIO_FRAGS],
149 &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
151 display_brw_stats(seq, "disk I/Os in flight", "ios",
152 &brw_stats->hist[BRW_R_RPC_HIST],
153 &brw_stats->hist[BRW_W_RPC_HIST], 0);
155 display_brw_stats(seq, "I/O time (1/1000s)", "ios",
156 &brw_stats->hist[BRW_R_IO_TIME],
157 &brw_stats->hist[BRW_W_IO_TIME], 1000 / HZ);
159 display_brw_stats(seq, "disk I/O size", "ios",
160 &brw_stats->hist[BRW_R_DISK_IOSIZE],
161 &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
166 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
168 struct osd_device *osd = seq->private;
170 brw_stats_show(seq, &osd->od_brw_stats);
175 static ssize_t osd_brw_stats_seq_write(struct file *file, const char *buf,
176 size_t len, loff_t *off)
178 struct seq_file *seq = file->private_data;
179 struct osd_device *osd = seq->private;
182 for (i = 0; i < BRW_LAST; i++)
183 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
188 LPROC_SEQ_FOPS(osd_brw_stats);
190 static int osd_stats_init(struct osd_device *osd)
195 for (i = 0; i < BRW_LAST; i++)
196 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
198 osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
199 if (osd->od_stats != NULL) {
200 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
205 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
206 LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
208 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
209 LPROCFS_CNTR_AVGMINMAX,
210 "get_page_failures", "num");
211 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
212 LPROCFS_CNTR_AVGMINMAX,
213 "cache_access", "pages");
214 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
215 LPROCFS_CNTR_AVGMINMAX,
216 "cache_hit", "pages");
217 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
218 LPROCFS_CNTR_AVGMINMAX,
219 "cache_miss", "pages");
220 #if OSD_THANDLE_STATS
221 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
222 LPROCFS_CNTR_AVGMINMAX,
223 "thandle starting", "usec");
224 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
225 LPROCFS_CNTR_AVGMINMAX,
226 "thandle open", "usec");
227 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
228 LPROCFS_CNTR_AVGMINMAX,
229 "thandle closing", "usec");
231 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
232 0644, &osd_brw_stats_fops, osd);
240 static int ldiskfs_osd_fstype_seq_show(struct seq_file *m, void *data)
242 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
244 LASSERT(osd != NULL);
245 return seq_printf(m, "ldiskfs\n");
247 LPROC_SEQ_FOPS_RO(ldiskfs_osd_fstype);
249 static int ldiskfs_osd_mntdev_seq_show(struct seq_file *m, void *data)
251 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
253 LASSERT(osd != NULL);
254 if (unlikely(osd->od_mnt == NULL))
257 return seq_printf(m, "%s\n", osd->od_mntdev);
259 LPROC_SEQ_FOPS_RO(ldiskfs_osd_mntdev);
261 static int ldiskfs_osd_cache_seq_show(struct seq_file *m, void *data)
263 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
265 LASSERT(osd != NULL);
266 if (unlikely(osd->od_mnt == NULL))
269 return seq_printf(m, "%u\n", osd->od_read_cache);
273 ldiskfs_osd_cache_seq_write(struct file *file, const char *buffer,
274 size_t count, loff_t *off)
276 struct seq_file *m = file->private_data;
277 struct dt_device *dt = m->private;
278 struct osd_device *osd = osd_dt_dev(dt);
281 LASSERT(osd != NULL);
282 if (unlikely(osd->od_mnt == NULL))
285 rc = lprocfs_write_helper(buffer, count, &val);
289 osd->od_read_cache = !!val;
292 LPROC_SEQ_FOPS(ldiskfs_osd_cache);
294 static int ldiskfs_osd_wcache_seq_show(struct seq_file *m, void *data)
296 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
298 LASSERT(osd != NULL);
299 if (unlikely(osd->od_mnt == NULL))
302 return seq_printf(m, "%u\n", osd->od_writethrough_cache);
306 ldiskfs_osd_wcache_seq_write(struct file *file, const char *buffer,
307 size_t count, loff_t *off)
309 struct seq_file *m = file->private_data;
310 struct dt_device *dt = m->private;
311 struct osd_device *osd = osd_dt_dev(dt);
314 LASSERT(osd != NULL);
315 if (unlikely(osd->od_mnt == NULL))
318 rc = lprocfs_write_helper(buffer, count, &val);
322 osd->od_writethrough_cache = !!val;
325 LPROC_SEQ_FOPS(ldiskfs_osd_wcache);
328 lprocfs_osd_force_sync_seq_write(struct file *file, const char *buffer,
329 size_t count, loff_t *off)
331 struct seq_file *m = file->private_data;
332 struct dt_device *dt = m->private;
333 struct osd_device *osd = osd_dt_dev(dt);
337 LASSERT(osd != NULL);
338 if (unlikely(osd->od_mnt == NULL))
341 rc = lu_env_init(&env, LCT_LOCAL);
344 rc = dt_sync(&env, dt);
347 return rc == 0 ? count : rc;
349 LPROC_SEQ_FOPS_WO_TYPE(ldiskfs, osd_force_sync);
351 static int ldiskfs_osd_pdo_seq_show(struct seq_file *m, void *data)
353 return seq_printf(m, "%s\n", ldiskfs_pdo ? "ON" : "OFF");
357 ldiskfs_osd_pdo_seq_write(struct file *file, const char *buffer,
358 size_t count, loff_t *off)
362 rc = lprocfs_write_helper(buffer, count, &pdo);
370 LPROC_SEQ_FOPS(ldiskfs_osd_pdo);
372 static int ldiskfs_osd_auto_scrub_seq_show(struct seq_file *m, void *data)
374 struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
376 LASSERT(dev != NULL);
377 if (unlikely(dev->od_mnt == NULL))
380 return seq_printf(m, "%d\n", !dev->od_noscrub);
384 ldiskfs_osd_auto_scrub_seq_write(struct file *file, const char *buffer,
385 size_t count, loff_t *off)
387 struct seq_file *m = file->private_data;
388 struct dt_device *dt = m->private;
389 struct osd_device *dev = osd_dt_dev(dt);
392 LASSERT(dev != NULL);
393 if (unlikely(dev->od_mnt == NULL))
396 rc = lprocfs_write_helper(buffer, count, &val);
400 dev->od_noscrub = !val;
403 LPROC_SEQ_FOPS(ldiskfs_osd_auto_scrub);
406 ldiskfs_osd_track_declares_assert_seq_show(struct seq_file *m, void *data)
408 return seq_printf(m, "%d\n", ldiskfs_track_declares_assert);
412 ldiskfs_osd_track_declares_assert_seq_write(struct file *file,
414 size_t count, loff_t *off)
416 int track_declares_assert;
419 rc = lprocfs_write_helper(buffer, count, &track_declares_assert);
423 ldiskfs_track_declares_assert = !!track_declares_assert;
427 LPROC_SEQ_FOPS(ldiskfs_osd_track_declares_assert);
429 static int ldiskfs_osd_oi_scrub_seq_show(struct seq_file *m, void *data)
431 struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
433 LASSERT(dev != NULL);
434 if (unlikely(dev->od_mnt == NULL))
437 return osd_scrub_dump(m, dev);
439 LPROC_SEQ_FOPS_RO(ldiskfs_osd_oi_scrub);
441 int ldiskfs_osd_readcache_seq_show(struct seq_file *m, void *data)
443 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
445 LASSERT(osd != NULL);
446 if (unlikely(osd->od_mnt == NULL))
449 return seq_printf(m, LPU64"\n", osd->od_readcache_max_filesize);
453 ldiskfs_osd_readcache_seq_write(struct file *file, const char *buffer,
454 size_t count, loff_t *off)
456 struct seq_file *m = file->private_data;
457 struct dt_device *dt = m->private;
458 struct osd_device *osd = osd_dt_dev(dt);
462 LASSERT(osd != NULL);
463 if (unlikely(osd->od_mnt == NULL))
466 rc = lprocfs_write_u64_helper(buffer, count, &val);
470 osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?
471 OSD_MAX_CACHE_SIZE : val;
474 LPROC_SEQ_FOPS(ldiskfs_osd_readcache);
476 static int ldiskfs_osd_lma_self_repair_seq_show(struct seq_file *m, void *data)
478 struct osd_device *dev = osd_dt_dev((struct dt_device *)m->private);
480 LASSERT(dev != NULL);
481 if (unlikely(dev->od_mnt == NULL))
484 return seq_printf(m, "%d\n", !!dev->od_lma_self_repair);
488 ldiskfs_osd_lma_self_repair_seq_write(struct file *file, const char *buffer,
489 size_t count, loff_t *off)
491 struct seq_file *m = file->private_data;
492 struct dt_device *dt = m->private;
493 struct osd_device *dev = osd_dt_dev(dt);
497 LASSERT(dev != NULL);
498 if (unlikely(dev->od_mnt == NULL))
501 rc = lprocfs_write_helper(buffer, count, &val);
505 dev->od_lma_self_repair = !!val;
508 LPROC_SEQ_FOPS(ldiskfs_osd_lma_self_repair);
510 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_blksize);
511 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytestotal);
512 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesfree);
513 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_kbytesavail);
514 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filestotal);
515 LPROC_SEQ_FOPS_RO_TYPE(ldiskfs, dt_filesfree);
517 struct lprocfs_seq_vars lprocfs_osd_obd_vars[] = {
518 { .name = "blocksize",
519 .fops = &ldiskfs_dt_blksize_fops },
520 { .name = "kbytestotal",
521 .fops = &ldiskfs_dt_kbytestotal_fops },
522 { .name = "kbytesfree",
523 .fops = &ldiskfs_dt_kbytesfree_fops },
524 { .name = "kbytesavail",
525 .fops = &ldiskfs_dt_kbytesavail_fops },
526 { .name = "filestotal",
527 .fops = &ldiskfs_dt_filestotal_fops },
528 { .name = "filesfree",
529 .fops = &ldiskfs_dt_filesfree_fops },
531 .fops = &ldiskfs_osd_fstype_fops },
533 .fops = &ldiskfs_osd_mntdev_fops },
534 { .name = "force_sync",
535 .fops = &ldiskfs_osd_force_sync_fops },
537 .fops = &ldiskfs_osd_pdo_fops },
538 { .name = "auto_scrub",
539 .fops = &ldiskfs_osd_auto_scrub_fops },
540 { .name = "oi_scrub",
541 .fops = &ldiskfs_osd_oi_scrub_fops },
542 { .name = "read_cache_enable",
543 .fops = &ldiskfs_osd_cache_fops },
544 { .name = "writethrough_cache_enable",
545 .fops = &ldiskfs_osd_wcache_fops },
546 { .name = "readcache_max_filesize",
547 .fops = &ldiskfs_osd_readcache_fops },
548 { .name = "lma_self_repair",
549 .fops = &ldiskfs_osd_lma_self_repair_fops },
553 struct lprocfs_seq_vars lprocfs_osd_module_vars[] = {
554 { .name = "track_declares_assert",
555 .fops = &ldiskfs_osd_track_declares_assert_fops },
560 int osd_procfs_init(struct osd_device *osd, const char *name)
562 struct obd_type *type;
566 if (osd->od_proc_entry)
569 /* at the moment there is no linkage between lu_type
570 * and obd_type, so we lookup obd_type this way */
571 type = class_search_type(LUSTRE_OSD_LDISKFS_NAME);
573 LASSERT(name != NULL);
574 LASSERT(type != NULL);
576 /* Find the type procroot and add the proc entry for this device */
577 osd->od_proc_entry = lprocfs_seq_register(name, type->typ_procroot,
578 lprocfs_osd_obd_vars,
580 if (IS_ERR(osd->od_proc_entry)) {
581 rc = PTR_ERR(osd->od_proc_entry);
582 CERROR("Error %d setting up lprocfs for %s\n",
584 osd->od_proc_entry = NULL;
588 rc = osd_stats_init(osd);
593 osd_procfs_fini(osd);
597 int osd_procfs_fini(struct osd_device *osd)
600 lprocfs_free_stats(&osd->od_stats);
602 if (osd->od_proc_entry)
603 lprocfs_remove(&osd->od_proc_entry);