1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of the Lustre file system, http://www.lustre.org
7 * Lustre is a trademark of Cluster File Systems, Inc.
9 * You may have signed or agreed to another license before downloading
10 * this software. If so, you are bound by the terms and conditions
11 * of that agreement, and the following does not apply to you. See the
12 * LICENSE file included with this distribution for more information.
14 * If you did not agree to a different license, then this copy of Lustre
15 * is open source software; you can redistribute it and/or modify it
16 * under the terms of version 2 of the GNU General Public License as
17 * published by the Free Software Foundation.
19 * In either case, Lustre is distributed in the hope that it will be
20 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
21 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * license text for more details.
25 #define DEBUG_SUBSYSTEM S_CLASS
28 # include <liblustre.h>
31 #include <obd_support.h>
33 #include <lprocfs_status.h>
34 #include <lustre/lustre_idl.h>
35 #include <lustre_net.h>
36 #include <obd_class.h>
37 #include "ptlrpc_internal.h"
40 struct ll_rpc_opcode {
43 } ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
44 { OST_REPLY, "ost_reply" },
45 { OST_GETATTR, "ost_getattr" },
46 { OST_SETATTR, "ost_setattr" },
47 { OST_READ, "ost_read" },
48 { OST_WRITE, "ost_write" },
49 { OST_CREATE , "ost_create" },
50 { OST_DESTROY, "ost_destroy" },
51 { OST_GET_INFO, "ost_get_info" },
52 { OST_CONNECT, "ost_connect" },
53 { OST_DISCONNECT, "ost_disconnect" },
54 { OST_PUNCH, "ost_punch" },
55 { OST_OPEN, "ost_open" },
56 { OST_CLOSE, "ost_close" },
57 { OST_STATFS, "ost_statfs" },
58 { 14, "ost_san_read" },
59 { 15, "ost_san_write" },
60 { OST_SYNC, "ost_sync" },
61 { OST_SET_INFO, "ost_set_info" },
62 { OST_QUOTACHECK, "ost_quotacheck" },
63 { OST_QUOTACTL, "ost_quotactl" },
64 { MDS_GETATTR, "mds_getattr" },
65 { MDS_GETATTR_NAME, "mds_getattr_lock" },
66 { MDS_CLOSE, "mds_close" },
67 { MDS_REINT, "mds_reint" },
68 { MDS_READPAGE, "mds_readpage" },
69 { MDS_CONNECT, "mds_connect" },
70 { MDS_DISCONNECT, "mds_disconnect" },
71 { MDS_GETSTATUS, "mds_getstatus" },
72 { MDS_STATFS, "mds_statfs" },
73 { MDS_PIN, "mds_pin" },
74 { MDS_UNPIN, "mds_unpin" },
75 { MDS_SYNC, "mds_sync" },
76 { MDS_DONE_WRITING, "mds_done_writing" },
77 { MDS_SET_INFO, "mds_set_info" },
78 { MDS_QUOTACHECK, "mds_quotacheck" },
79 { MDS_QUOTACTL, "mds_quotactl" },
80 { MDS_GETXATTR, "mds_getxattr" },
81 { MDS_SETXATTR, "mds_setxattr" },
82 { MDS_WRITEPAGE, "mds_writepage" },
83 { MDS_IS_SUBDIR, "mds_is_subdir" },
84 { LDLM_ENQUEUE, "ldlm_enqueue" },
85 { LDLM_CONVERT, "ldlm_convert" },
86 { LDLM_CANCEL, "ldlm_cancel" },
87 { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
88 { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
89 { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
90 { MGS_CONNECT, "mgs_connect" },
91 { MGS_DISCONNECT, "mgs_disconnect" },
92 { MGS_EXCEPTION, "mgs_exception" },
93 { MGS_TARGET_REG, "mgs_target_reg" },
94 { MGS_TARGET_DEL, "mgs_target_del" },
95 { MGS_SET_INFO, "mgs_set_info" },
96 { OBD_PING, "obd_ping" },
97 { OBD_LOG_CANCEL, "llog_origin_handle_cancel" },
98 { OBD_QC_CALLBACK, "obd_qc_callback" },
99 { LLOG_ORIGIN_HANDLE_CREATE, "llog_origin_handle_create" },
100 { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
101 { LLOG_ORIGIN_HANDLE_READ_HEADER, "llog_origin_handle_read_header" },
102 { LLOG_ORIGIN_HANDLE_WRITE_REC, "llog_origin_handle_write_rec" },
103 { LLOG_ORIGIN_HANDLE_CLOSE, "llog_origin_handle_close" },
104 { LLOG_ORIGIN_CONNECT, "llog_origin_connect" },
105 { LLOG_CATINFO, "llog_catinfo" },
106 { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
107 { LLOG_ORIGIN_HANDLE_DESTROY, "llog_origin_handle_destroy" },
108 { FLD_QUERY, "fld_query" },
109 { SEQ_QUERY, "seq_query" },
110 { SEC_CTX_INIT, "sec_ctx_init" },
111 { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
112 { SEC_CTX_FINI, "sec_ctx_fini" }
115 const char* ll_opcode2str(__u32 opcode)
117 /* When one of the assertions below fail, chances are that:
118 * 1) A new opcode was added in lustre_idl.h, but was
119 * is missing from the table above.
120 * or 2) The opcode space was renumbered or rearranged,
121 * and the opcode_offset() function in
122 * ptlrpc_internal.h needs to be modified.
124 __u32 offset = opcode_offset(opcode);
125 LASSERT(offset < LUSTRE_MAX_OPCODES);
126 LASSERT(ll_rpc_opcode_table[offset].opcode == opcode);
127 return ll_rpc_opcode_table[offset].opname;
131 void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
132 char *name, struct proc_dir_entry **procroot_ret,
133 struct lprocfs_stats **stats_ret)
135 struct proc_dir_entry *svc_procroot;
136 struct lprocfs_stats *svc_stats;
138 unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
141 LASSERT(*procroot_ret == NULL);
142 LASSERT(*stats_ret == NULL);
144 svc_stats = lprocfs_alloc_stats(PTLRPC_LAST_CNTR + LUSTRE_MAX_OPCODES, 0);
145 if (svc_stats == NULL)
149 svc_procroot = lprocfs_register(dir, root, NULL, NULL);
150 if (IS_ERR(svc_procroot)) {
151 lprocfs_free_stats(&svc_stats);
158 lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
159 svc_counter_config, "req_waittime", "usec");
160 lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
161 svc_counter_config, "req_qdepth", "reqs");
162 lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
163 svc_counter_config, "req_active", "reqs");
164 lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
165 svc_counter_config, "reqbuf_avail", "bufs");
166 for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
167 __u32 opcode = ll_rpc_opcode_table[i].opcode;
168 lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
169 svc_counter_config, ll_opcode2str(opcode),
173 rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
176 lprocfs_remove(&svc_procroot);
177 lprocfs_free_stats(&svc_stats);
180 *procroot_ret = svc_procroot;
181 *stats_ret = svc_stats;
186 ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
187 int count, int *eof, void *data)
189 struct ptlrpc_service *svc = data;
192 return snprintf(page, count, "%d\n", svc->srv_n_history_rqbds);
196 ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
197 int count, int *eof, void *data)
199 struct ptlrpc_service *svc = data;
202 return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds);
206 ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
207 unsigned long count, void *data)
209 struct ptlrpc_service *svc = data;
212 int rc = lprocfs_write_helper(buffer, count, &val);
220 /* This sanity check is more of an insanity check; we can still
221 * hose a kernel by allowing the request history to grow too
223 bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
224 if (val > num_physpages/(2 * bufpages))
227 spin_lock(&svc->srv_lock);
228 svc->srv_max_history_rqbds = val;
229 spin_unlock(&svc->srv_lock);
234 struct ptlrpc_srh_iterator {
236 struct ptlrpc_request *srhi_req;
240 ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc,
241 struct ptlrpc_srh_iterator *srhi,
245 struct ptlrpc_request *req;
247 if (srhi->srhi_req != NULL &&
248 srhi->srhi_seq > svc->srv_request_max_cull_seq &&
249 srhi->srhi_seq <= seq) {
250 /* If srhi_req was set previously, hasn't been culled and
251 * we're searching for a seq on or after it (i.e. more
252 * recent), search from it onwards.
253 * Since the service history is LRU (i.e. culled reqs will
254 * be near the head), we shouldn't have to do long
256 LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq);
257 LASSERT (!list_empty(&svc->srv_request_history));
258 e = &srhi->srhi_req->rq_history_list;
260 /* search from start */
261 e = svc->srv_request_history.next;
264 while (e != &svc->srv_request_history) {
265 req = list_entry(e, struct ptlrpc_request, rq_history_list);
267 if (req->rq_history_seq >= seq) {
268 srhi->srhi_seq = req->rq_history_seq;
269 srhi->srhi_req = req;
279 ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
281 struct ptlrpc_service *svc = s->private;
282 struct ptlrpc_srh_iterator *srhi;
285 OBD_ALLOC(srhi, sizeof(*srhi));
290 srhi->srhi_req = NULL;
292 spin_lock(&svc->srv_lock);
293 rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos);
294 spin_unlock(&svc->srv_lock);
297 *pos = srhi->srhi_seq;
301 OBD_FREE(srhi, sizeof(*srhi));
306 ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
308 struct ptlrpc_srh_iterator *srhi = iter;
311 OBD_FREE(srhi, sizeof(*srhi));
315 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
316 void *iter, loff_t *pos)
318 struct ptlrpc_service *svc = s->private;
319 struct ptlrpc_srh_iterator *srhi = iter;
322 spin_lock(&svc->srv_lock);
323 rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1);
324 spin_unlock(&svc->srv_lock);
327 OBD_FREE(srhi, sizeof(*srhi));
331 *pos = srhi->srhi_seq;
335 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
337 struct ptlrpc_service *svc = s->private;
338 struct ptlrpc_srh_iterator *srhi = iter;
339 struct ptlrpc_request *req;
342 spin_lock(&svc->srv_lock);
344 rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, srhi->srhi_seq);
347 req = srhi->srhi_req;
349 /* Print common req fields.
350 * CAVEAT EMPTOR: we're racing with the service handler
351 * here. The request could contain any old crap, so you
352 * must be just as careful as the service's request
353 * parser. Currently I only print stuff here I know is OK
354 * to look at coz it was set up in request_in_callback()!!! */
355 seq_printf(s, LPD64":%s:%s:"LPD64":%d:%s ",
356 req->rq_history_seq, libcfs_nid2str(req->rq_self),
357 libcfs_id2str(req->rq_peer), req->rq_xid,
358 req->rq_reqlen,ptlrpc_rqphase2str(req));
360 if (svc->srv_request_history_print_fn == NULL)
363 svc->srv_request_history_print_fn(s, srhi->srhi_req);
366 spin_unlock(&svc->srv_lock);
372 ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
374 static struct seq_operations sops = {
375 .start = ptlrpc_lprocfs_svc_req_history_start,
376 .stop = ptlrpc_lprocfs_svc_req_history_stop,
377 .next = ptlrpc_lprocfs_svc_req_history_next,
378 .show = ptlrpc_lprocfs_svc_req_history_show,
380 struct proc_dir_entry *dp = PDE(inode);
381 struct seq_file *seqf;
384 LPROCFS_ENTRY_AND_CHECK(dp);
385 rc = seq_open(file, &sops);
391 seqf = file->private_data;
392 seqf->private = dp->data;
396 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
397 struct ptlrpc_service *svc)
399 struct lprocfs_vars lproc_vars[] = {
400 {.name = "req_buffer_history_len",
402 .read_fptr = ptlrpc_lprocfs_read_req_history_len,
404 {.name = "req_buffer_history_max",
405 .write_fptr = ptlrpc_lprocfs_write_req_history_max,
406 .read_fptr = ptlrpc_lprocfs_read_req_history_max,
410 static struct file_operations req_history_fops = {
411 .owner = THIS_MODULE,
412 .open = ptlrpc_lprocfs_svc_req_history_open,
415 .release = lprocfs_seq_release,
417 struct proc_dir_entry *req_history;
419 ptlrpc_lprocfs_register(entry, svc->srv_name,
420 "stats", &svc->srv_procroot,
423 if (svc->srv_procroot == NULL)
426 lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
428 req_history = create_proc_entry("req_history", 0400,
430 if (req_history != NULL) {
431 req_history->data = svc;
432 req_history->proc_fops = &req_history_fops;
436 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
438 ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
439 &obddev->obd_svc_procroot,
440 &obddev->obd_svc_stats);
442 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
444 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req)
446 struct lprocfs_stats *svc_stats;
447 int opc = opcode_offset(lustre_msg_get_opc(req->rq_reqmsg));
449 svc_stats = req->rq_import->imp_obd->obd_svc_stats;
450 if (svc_stats == NULL || opc <= 0)
452 LASSERT(opc < LUSTRE_MAX_OPCODES);
453 /* These two use the ptlrpc_lprocfs_brw below */
454 if (!(opc == OST_WRITE || opc == OST_READ))
455 lprocfs_counter_add(svc_stats, opc + PTLRPC_LAST_CNTR, 0);
458 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int opc, int bytes)
460 struct lprocfs_stats *svc_stats;
461 svc_stats = req->rq_import->imp_obd->obd_svc_stats;
464 lprocfs_counter_add(svc_stats, opc + PTLRPC_LAST_CNTR, bytes);
466 EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
468 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
470 if (svc->srv_procroot != NULL)
471 lprocfs_remove(&svc->srv_procroot);
474 lprocfs_free_stats(&svc->srv_stats);
477 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
479 if (obd->obd_svc_procroot)
480 lprocfs_remove(&obd->obd_svc_procroot);
482 if (obd->obd_svc_stats)
483 lprocfs_free_stats(&obd->obd_svc_stats);
485 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
488 int lprocfs_wr_evict_client(struct file *file, const char *buffer,
489 unsigned long count, void *data)
491 struct obd_device *obd = data;
492 char tmpbuf[sizeof(struct obd_uuid)];
494 /* Kludge code(deadlock situation): the lprocfs lock has been held
495 * since the client is evicted by writting client's
496 * uuid/nid to procfs "evict_client" entry. However,
497 * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
498 * the proc entries under the being destroyed export{}, so I have
499 * to drop the lock at first here.
500 * - jay, jxiong@clusterfs.com */
504 sscanf(buffer, "%40s", tmpbuf);
505 if (strncmp(tmpbuf, "nid:", 4) == 0)
506 obd_export_evict_by_nid(obd, tmpbuf + 4);
507 else if (strncmp(tmpbuf, "uuid:", 5) == 0)
508 obd_export_evict_by_uuid(obd, tmpbuf + 5);
510 obd_export_evict_by_uuid(obd, tmpbuf);
517 EXPORT_SYMBOL(lprocfs_wr_evict_client);
519 int lprocfs_wr_ping(struct file *file, const char *buffer,
520 unsigned long count, void *data)
522 struct obd_device *obd = data;
523 struct ptlrpc_request *req;
527 LPROCFS_CLIMP_CHECK(obd);
528 req = ptlrpc_prep_req(obd->u.cli.cl_import, LUSTRE_OBD_VERSION,
529 OBD_PING, 1, NULL, NULL);
530 LPROCFS_CLIMP_EXIT(obd);
534 ptlrpc_req_set_repsize(req, 1, NULL);
535 req->rq_send_state = LUSTRE_IMP_FULL;
536 req->rq_no_resend = 1;
538 rc = ptlrpc_queue_wait(req);
540 ptlrpc_req_finished(req);
545 EXPORT_SYMBOL(lprocfs_wr_ping);