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14 * in the LICENSE file that accompanied this code).
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27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osd-zfs/osd_lproc.c
38 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
39 * Author: Mike Pershin <tappro@whamcloud.com>
42 #define DEBUG_SUBSYSTEM S_OSD
45 #include <obd_class.h>
46 #include <lprocfs_status.h>
47 #include <lustre/lustre_idl.h>
49 #include "osd_internal.h"
53 #define pct(a, b) (b ? a * 100 / b : 0)
55 static void display_brw_stats(struct seq_file *seq, char *name, char *units,
56 struct obd_histogram *read,
57 struct obd_histogram *write, int scale)
59 unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
62 seq_printf(seq, "\n%26s read | write\n", " ");
63 seq_printf(seq, "%-22s %-5s %% cum %% | %-11s %% cum %%\n",
66 read_tot = lprocfs_oh_sum(read);
67 write_tot = lprocfs_oh_sum(write);
68 for (i = 0; i < OBD_HIST_MAX; i++) {
69 r = read->oh_buckets[i];
70 w = write->oh_buckets[i];
73 if (read_cum == 0 && write_cum == 0)
77 seq_printf(seq, "%u", i);
79 seq_printf(seq, "%u", scale << i);
81 seq_printf(seq, "%uK", scale << (i-10));
83 seq_printf(seq, "%uM", scale << (i-20));
85 seq_printf(seq, ":\t\t%10lu %3lu %3lu | %4lu %3lu %3lu\n",
86 r, pct(r, read_tot), pct(read_cum, read_tot),
87 w, pct(w, write_tot), pct(write_cum, write_tot));
89 if (read_cum == read_tot && write_cum == write_tot)
94 static void brw_stats_show(struct seq_file *seq, struct brw_stats *brw_stats)
98 /* this sampling races with updates */
99 do_gettimeofday(&now);
100 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
101 now.tv_sec, now.tv_usec);
103 display_brw_stats(seq, "pages per bulk r/w", "rpcs",
104 &brw_stats->hist[BRW_R_PAGES],
105 &brw_stats->hist[BRW_W_PAGES], 1);
106 display_brw_stats(seq, "discontiguous pages", "rpcs",
107 &brw_stats->hist[BRW_R_DISCONT_PAGES],
108 &brw_stats->hist[BRW_W_DISCONT_PAGES], 0);
110 display_brw_stats(seq, "discontiguous blocks", "rpcs",
111 &brw_stats->hist[BRW_R_DISCONT_BLOCKS],
112 &brw_stats->hist[BRW_W_DISCONT_BLOCKS], 0);
114 display_brw_stats(seq, "disk fragmented I/Os", "ios",
115 &brw_stats->hist[BRW_R_DIO_FRAGS],
116 &brw_stats->hist[BRW_W_DIO_FRAGS], 0);
118 display_brw_stats(seq, "disk I/Os in flight", "ios",
119 &brw_stats->hist[BRW_R_RPC_HIST],
120 &brw_stats->hist[BRW_W_RPC_HIST], 0);
122 display_brw_stats(seq, "I/O time (1/1000s)", "ios",
123 &brw_stats->hist[BRW_R_IO_TIME],
124 &brw_stats->hist[BRW_W_IO_TIME], 1000 / HZ);
126 display_brw_stats(seq, "disk I/O size", "ios",
127 &brw_stats->hist[BRW_R_DISK_IOSIZE],
128 &brw_stats->hist[BRW_W_DISK_IOSIZE], 1);
133 static int osd_brw_stats_seq_show(struct seq_file *seq, void *v)
135 struct osd_device *osd = seq->private;
137 brw_stats_show(seq, &osd->od_brw_stats);
142 static ssize_t osd_brw_stats_seq_write(struct file *file, const char *buf,
143 size_t len, loff_t *off)
145 struct seq_file *seq = file->private_data;
146 struct osd_device *osd = seq->private;
149 for (i = 0; i < BRW_LAST; i++)
150 lprocfs_oh_clear(&osd->od_brw_stats.hist[i]);
155 LPROC_SEQ_FOPS(osd_brw_stats);
157 static int osd_stats_init(struct osd_device *osd)
162 for (i = 0; i < BRW_LAST; i++)
163 spin_lock_init(&osd->od_brw_stats.hist[i].oh_lock);
165 osd->od_stats = lprocfs_alloc_stats(LPROC_OSD_LAST, 0);
166 if (osd->od_stats != NULL) {
167 result = lprocfs_register_stats(osd->od_proc_entry, "stats",
172 lprocfs_counter_init(osd->od_stats, LPROC_OSD_GET_PAGE,
173 LPROCFS_CNTR_AVGMINMAX|LPROCFS_CNTR_STDDEV,
175 lprocfs_counter_init(osd->od_stats, LPROC_OSD_NO_PAGE,
176 LPROCFS_CNTR_AVGMINMAX,
177 "get_page_failures", "num");
178 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_ACCESS,
179 LPROCFS_CNTR_AVGMINMAX,
180 "cache_access", "pages");
181 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_HIT,
182 LPROCFS_CNTR_AVGMINMAX,
183 "cache_hit", "pages");
184 lprocfs_counter_init(osd->od_stats, LPROC_OSD_CACHE_MISS,
185 LPROCFS_CNTR_AVGMINMAX,
186 "cache_miss", "pages");
187 lprocfs_counter_init(osd->od_stats, LPROC_OSD_COPY_IO,
188 LPROCFS_CNTR_AVGMINMAX,
190 lprocfs_counter_init(osd->od_stats, LPROC_OSD_ZEROCOPY_IO,
191 LPROCFS_CNTR_AVGMINMAX,
192 "zerocopy", "pages");
193 lprocfs_counter_init(osd->od_stats, LPROC_OSD_TAIL_IO,
194 LPROCFS_CNTR_AVGMINMAX,
196 #ifdef OSD_THANDLE_STATS
197 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_STARTING,
198 LPROCFS_CNTR_AVGMINMAX,
199 "thandle_starting", "usec");
200 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_OPEN,
201 LPROCFS_CNTR_AVGMINMAX,
202 "thandle_open", "usec");
203 lprocfs_counter_init(osd->od_stats, LPROC_OSD_THANDLE_CLOSING,
204 LPROCFS_CNTR_AVGMINMAX,
205 "thandle_closing", "usec");
207 result = lprocfs_seq_create(osd->od_proc_entry, "brw_stats",
208 0644, &osd_brw_stats_fops, osd);
217 static int zfs_osd_fstype_seq_show(struct seq_file *m, void *data)
219 return seq_printf(m, "zfs\n");
221 LPROC_SEQ_FOPS_RO(zfs_osd_fstype);
223 static int zfs_osd_mntdev_seq_show(struct seq_file *m, void *data)
225 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
227 LASSERT(osd != NULL);
228 return seq_printf(m, "%s\n", osd->od_mntdev);
230 LPROC_SEQ_FOPS_RO(zfs_osd_mntdev);
233 lprocfs_osd_force_sync_seq_write(struct file *file, const char __user *buffer,
234 size_t count, loff_t *off)
236 struct seq_file *m = file->private_data;
237 struct dt_device *dt = m->private;
241 rc = lu_env_init(&env, LCT_LOCAL);
244 rc = dt_sync(&env, dt);
247 return rc == 0 ? count : rc;
249 LPROC_SEQ_FOPS_WO_TYPE(zfs, osd_force_sync);
251 static int zfs_osd_iused_est_seq_show(struct seq_file *m, void *data)
253 struct osd_device *osd = osd_dt_dev((struct dt_device *)m->private);
254 LASSERT(osd != NULL);
256 return seq_printf(m, "%d\n", osd->od_quota_iused_est);
260 zfs_osd_iused_est_seq_write(struct file *file, const char __user *buffer,
261 size_t count, loff_t *off)
263 struct seq_file *m = file->private_data;
264 struct dt_device *dt = m->private;
265 struct osd_device *osd = osd_dt_dev(dt);
268 LASSERT(osd != NULL);
270 rc = lprocfs_write_helper(buffer, count, &val);
274 osd->od_quota_iused_est = !!val;
278 LPROC_SEQ_FOPS(zfs_osd_iused_est);
280 LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_blksize);
281 LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_kbytestotal);
282 LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_kbytesfree);
283 LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_kbytesavail);
284 LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_filestotal);
285 LPROC_SEQ_FOPS_RO_TYPE(zfs, dt_filesfree);
287 struct lprocfs_vars lprocfs_osd_obd_vars[] = {
288 { .name = "blocksize",
289 .fops = &zfs_dt_blksize_fops },
290 { .name = "kbytestotal",
291 .fops = &zfs_dt_kbytestotal_fops },
292 { .name = "kbytesfree",
293 .fops = &zfs_dt_kbytesfree_fops },
294 { .name = "kbytesavail",
295 .fops = &zfs_dt_kbytesavail_fops },
296 { .name = "filestotal",
297 .fops = &zfs_dt_filestotal_fops },
298 { .name = "filesfree",
299 .fops = &zfs_dt_filesfree_fops },
301 .fops = &zfs_osd_fstype_fops },
303 .fops = &zfs_osd_mntdev_fops },
304 { .name = "force_sync",
305 .fops = &zfs_osd_force_sync_fops },
306 { .name = "quota_iused_estimate",
307 .fops = &zfs_osd_iused_est_fops },
311 int osd_procfs_init(struct osd_device *osd, const char *name)
313 struct obd_type *type;
317 if (osd->od_proc_entry)
320 /* at the moment there is no linkage between lu_type
321 * and obd_type, so we lookup obd_type this way */
322 type = class_search_type(LUSTRE_OSD_ZFS_NAME);
324 LASSERT(name != NULL);
325 LASSERT(type != NULL);
327 osd->od_proc_entry = lprocfs_register(name, type->typ_procroot,
328 lprocfs_osd_obd_vars,
330 if (IS_ERR(osd->od_proc_entry)) {
331 rc = PTR_ERR(osd->od_proc_entry);
332 CERROR("Error %d setting up lprocfs for %s\n", rc, name);
333 osd->od_proc_entry = NULL;
337 rc = osd_stats_init(osd);
342 osd_procfs_fini(osd);
346 int osd_procfs_fini(struct osd_device *osd)
351 lprocfs_free_stats(&osd->od_stats);
353 if (osd->od_proc_entry) {
354 lprocfs_remove(&osd->od_proc_entry);
355 osd->od_proc_entry = NULL;