1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_LOG
44 #include <liblustre.h>
47 #include <obd_class.h>
48 #include <lustre_log.h>
49 #include <libcfs/list.h>
50 #include "llog_internal.h"
52 /* helper functions for calling the llog obd methods */
53 static struct llog_ctxt* llog_new_ctxt(struct obd_device *obd)
55 struct llog_ctxt *ctxt;
62 atomic_set(&ctxt->loc_refcount, 1);
67 static void llog_ctxt_destroy(struct llog_ctxt *ctxt)
70 class_export_put(ctxt->loc_exp);
74 class_import_put(ctxt->loc_imp);
77 LASSERT(ctxt->loc_llcd == NULL);
81 int __llog_ctxt_put(struct llog_ctxt *ctxt)
83 struct obd_llog_group *olg = ctxt->loc_olg;
84 struct obd_device *obd;
87 spin_lock(&olg->olg_lock);
88 if (!atomic_dec_and_test(&ctxt->loc_refcount)) {
89 spin_unlock(&olg->olg_lock);
92 olg->olg_ctxts[ctxt->loc_idx] = NULL;
93 spin_unlock(&olg->olg_lock);
96 spin_lock(&obd->obd_dev_lock);
97 spin_unlock(&obd->obd_dev_lock); /* sync with llog ctxt user thread */
99 /* obd->obd_starting is needed for the case of cleanup
100 * in error case while obd is starting up. */
101 LASSERTF(obd->obd_starting == 1 ||
102 obd->obd_stopping == 1 || obd->obd_set_up == 0,
103 "wrong obd state: %d/%d/%d\n", !!obd->obd_starting,
104 !!obd->obd_stopping, !!obd->obd_set_up);
106 /* cleanup the llog ctxt here */
107 if (CTXTP(ctxt, cleanup))
108 rc = CTXTP(ctxt, cleanup)(ctxt);
110 llog_ctxt_destroy(ctxt);
111 wake_up(&olg->olg_waitq);
114 EXPORT_SYMBOL(__llog_ctxt_put);
116 int llog_cleanup(struct llog_ctxt *ctxt)
118 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
119 struct obd_llog_group *olg;
123 LASSERT(ctxt != NULL);
124 LASSERT(ctxt != LP_POISON);
127 LASSERT(olg != NULL);
128 LASSERT(olg != LP_POISON);
133 * Banlance the ctxt get when calling llog_cleanup()
135 LASSERT(atomic_read(&ctxt->loc_refcount) < 0x5a5a5a);
136 LASSERT(atomic_read(&ctxt->loc_refcount) > 1);
140 * Try to free the ctxt.
142 rc = __llog_ctxt_put(ctxt);
144 CERROR("Error %d while cleaning up ctxt %p\n",
147 l_wait_event(olg->olg_waitq,
148 llog_group_ctxt_null(olg, idx), &lwi);
152 EXPORT_SYMBOL(llog_cleanup);
154 int llog_setup_named(struct obd_device *obd, struct obd_llog_group *olg,
155 int index, struct obd_device *disk_obd, int count,
156 struct llog_logid *logid, const char *logname,
157 struct llog_operations *op)
159 struct llog_ctxt *ctxt;
163 if (index < 0 || index >= LLOG_MAX_CTXTS)
166 LASSERT(olg != NULL);
168 ctxt = llog_new_ctxt(obd);
174 ctxt->loc_idx = index;
175 ctxt->loc_logops = op;
176 sema_init(&ctxt->loc_sem, 1);
177 ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
179 rc = llog_group_set_ctxt(olg, ctxt, index);
181 llog_ctxt_destroy(ctxt);
183 ctxt = llog_group_get_ctxt(olg, index);
186 * mds_lov_update_desc() might call here multiple
187 * times. So if the llog is already set up then
188 * don't to do it again.
190 CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
191 obd->obd_name, index);
192 LASSERT(ctxt->loc_olg == olg);
193 LASSERT(ctxt->loc_obd == obd);
194 LASSERT(ctxt->loc_exp == disk_obd->obd_self_export);
195 LASSERT(ctxt->loc_logops == op);
203 if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) {
207 rc = op->lop_setup(obd, olg, index, disk_obd, count,
212 CERROR("obd %s ctxt %d lop_setup=%p failed %d\n",
213 obd->obd_name, index, op->lop_setup, rc);
219 EXPORT_SYMBOL(llog_setup_named);
221 int llog_setup(struct obd_device *obd, struct obd_llog_group *olg,
222 int index, struct obd_device *disk_obd, int count,
223 struct llog_logid *logid, struct llog_operations *op)
225 return llog_setup_named(obd,olg,index,disk_obd,count,logid,NULL,op);
227 EXPORT_SYMBOL(llog_setup);
229 int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp)
237 if (CTXTP(ctxt, sync))
238 rc = CTXTP(ctxt, sync)(ctxt, exp);
242 EXPORT_SYMBOL(llog_sync);
244 int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
245 struct lov_stripe_md *lsm, struct llog_cookie *logcookies,
256 CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP);
257 raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
259 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
260 rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies);
262 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
265 EXPORT_SYMBOL(llog_add);
267 int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
268 int count, struct llog_cookie *cookies, int flags)
278 CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
279 rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags);
282 EXPORT_SYMBOL(llog_cancel);
284 /* callback func for llog_process in llog_obd_origin_setup */
285 static int cat_cancel_cb(struct llog_handle *cathandle,
286 struct llog_rec_hdr *rec, void *data)
288 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
289 struct llog_handle *loghandle;
290 struct llog_log_hdr *llh;
294 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
295 CERROR("invalid record in catalog\n");
298 CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
299 LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
300 rec->lrh_index, cathandle->lgh_id.lgl_oid);
302 rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
304 CERROR("Cannot find handle for log "LPX64"\n",
305 lir->lid_id.lgl_oid);
309 llh = loghandle->lgh_hdr;
310 if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
311 (llh->llh_count == 1)) {
312 rc = llog_destroy(loghandle);
314 CERROR("failure destroying log in postsetup: %d\n", rc);
316 index = loghandle->u.phd.phd_cookie.lgc_index;
317 llog_free_handle(loghandle);
320 llog_cat_set_first_idx(cathandle, index);
321 rc = llog_cancel_rec(cathandle, index);
323 CDEBUG(D_HA, "cancel log "LPX64":%x at index %u of catalog "
324 LPX64"\n", lir->lid_id.lgl_oid,
325 lir->lid_id.lgl_ogen, rec->lrh_index,
326 cathandle->lgh_id.lgl_oid);
332 /* lop_setup method for filter/osc */
333 // XXX how to set exports
334 int llog_obd_origin_setup(struct obd_device *obd, struct obd_llog_group *olg,
335 int index, struct obd_device *disk_obd, int count,
336 struct llog_logid *logid, const char *name)
338 struct llog_ctxt *ctxt;
339 struct llog_handle *handle;
340 struct lvfs_run_ctxt saved;
349 LASSERT(olg != NULL);
350 ctxt = llog_group_get_ctxt(olg, index);
355 if (logid && logid->lgl_oid) {
356 rc = llog_create(ctxt, &handle, logid, NULL);
358 rc = llog_create(ctxt, &handle, NULL, (char *)name);
360 *logid = handle->lgh_id;
365 ctxt->loc_handle = handle;
366 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
367 rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL);
368 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
372 rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
374 CERROR("llog_process() with cat_cancel_cb failed: %d\n", rc);
380 EXPORT_SYMBOL(llog_obd_origin_setup);
382 int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
384 struct llog_handle *cathandle, *n, *loghandle;
385 struct llog_log_hdr *llh;
392 cathandle = ctxt->loc_handle;
394 list_for_each_entry_safe(loghandle, n,
395 &cathandle->u.chd.chd_head,
397 llh = loghandle->lgh_hdr;
398 if ((llh->llh_flags &
399 LLOG_F_ZAP_WHEN_EMPTY) &&
400 (llh->llh_count == 1)) {
401 rc = llog_destroy(loghandle);
403 CERROR("failure destroying log during "
404 "cleanup: %d\n", rc);
406 index = loghandle->u.phd.phd_cookie.lgc_index;
407 llog_free_handle(loghandle);
410 llog_cat_set_first_idx(cathandle, index);
411 rc = llog_cancel_rec(cathandle, index);
413 CDEBUG(D_RPCTRACE, "cancel plain log at"
414 "index %u of catalog "LPX64"\n",
415 index,cathandle->lgh_id.lgl_oid);
418 llog_cat_put(ctxt->loc_handle);
422 EXPORT_SYMBOL(llog_obd_origin_cleanup);
424 /* add for obdfilter/sz and mds/unlink */
425 int llog_obd_origin_add(struct llog_ctxt *ctxt,
426 struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
427 struct llog_cookie *logcookies, int numcookies)
429 struct llog_handle *cathandle;
433 cathandle = ctxt->loc_handle;
434 LASSERT(cathandle != NULL);
435 rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
436 if ((rc < 0) || (!logcookies && rc))
437 CERROR("write one catalog record failed: %d\n", rc);
440 EXPORT_SYMBOL(llog_obd_origin_add);
442 int llog_cat_initialize(struct obd_device *obd, struct obd_llog_group *olg,
443 int idx, struct obd_uuid *uuid)
445 char name[32] = CATLIST;
446 struct llog_catid idarray;
450 mutex_down(&olg->olg_cat_processing);
451 rc = llog_get_cat_list(obd, obd, name, idx, 1, &idarray);
453 CERROR("rc: %d\n", rc);
457 CDEBUG(D_INFO, "%s: Init llog for %s/%d - catid "LPX64"/"LPX64":%x\n",
458 obd->obd_name, uuid->uuid, idx, idarray.lci_logid.lgl_oid,
459 idarray.lci_logid.lgl_ogr, idarray.lci_logid.lgl_ogen);
461 rc = obd_llog_init(obd, olg, obd, 1, &idarray, uuid);
463 CERROR("rc: %d\n", rc);
467 rc = llog_put_cat_list(obd, obd, name, idx, 1, &idarray);
469 CERROR("rc: %d\n", rc);
474 mutex_up(&olg->olg_cat_processing);
478 EXPORT_SYMBOL(llog_cat_initialize);
480 int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
481 struct obd_device *disk_obd, int count,
482 struct llog_catid *logid, struct obd_uuid *uuid)
486 OBD_CHECK_DT_OP(obd, llog_init, 0);
487 OBD_COUNTER_INCREMENT(obd, llog_init);
489 rc = OBP(obd, llog_init)(obd, olg, disk_obd, count, logid, uuid);
492 EXPORT_SYMBOL(obd_llog_init);
494 int obd_llog_finish(struct obd_device *obd, int count)
498 OBD_CHECK_DT_OP(obd, llog_finish, 0);
499 OBD_COUNTER_INCREMENT(obd, llog_finish);
501 rc = OBP(obd, llog_finish)(obd, count);
504 EXPORT_SYMBOL(obd_llog_finish);