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 lcm_put(ctxt->loc_lcm);
99 spin_lock(&obd->obd_dev_lock);
100 spin_unlock(&obd->obd_dev_lock); /* sync with llog ctxt user thread */
102 /* obd->obd_starting is needed for the case of cleanup
103 * in error case while obd is starting up. */
104 LASSERTF(obd->obd_starting == 1 ||
105 obd->obd_stopping == 1 || obd->obd_set_up == 0,
106 "wrong obd state: %d/%d/%d\n", !!obd->obd_starting,
107 !!obd->obd_stopping, !!obd->obd_set_up);
109 /* cleanup the llog ctxt here */
110 if (CTXTP(ctxt, cleanup))
111 rc = CTXTP(ctxt, cleanup)(ctxt);
113 llog_ctxt_destroy(ctxt);
114 wake_up(&olg->olg_waitq);
117 EXPORT_SYMBOL(__llog_ctxt_put);
119 int llog_cleanup(struct llog_ctxt *ctxt)
121 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
122 struct obd_llog_group *olg;
126 LASSERT(ctxt != NULL);
127 LASSERT(ctxt != LP_POISON);
130 LASSERT(olg != NULL);
131 LASSERT(olg != LP_POISON);
136 * Banlance the ctxt get when calling llog_cleanup()
138 LASSERT(atomic_read(&ctxt->loc_refcount) < 0x5a5a5a);
139 LASSERT(atomic_read(&ctxt->loc_refcount) > 1);
143 * Try to free the ctxt.
145 rc = __llog_ctxt_put(ctxt);
147 CERROR("Error %d while cleaning up ctxt %p\n",
150 l_wait_event(olg->olg_waitq,
151 llog_group_ctxt_null(olg, idx), &lwi);
155 EXPORT_SYMBOL(llog_cleanup);
157 int llog_setup_named(struct obd_device *obd, struct obd_llog_group *olg,
158 int index, struct obd_device *disk_obd, int count,
159 struct llog_logid *logid, const char *logname,
160 struct llog_operations *op)
162 struct llog_ctxt *ctxt;
166 if (index < 0 || index >= LLOG_MAX_CTXTS)
169 LASSERT(olg != NULL);
171 ctxt = llog_new_ctxt(obd);
177 ctxt->loc_idx = index;
178 ctxt->loc_logops = op;
179 sema_init(&ctxt->loc_sem, 1);
180 ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
181 ctxt->loc_flags = LLOG_CTXT_FLAG_UNINITIALIZED;
183 rc = llog_group_set_ctxt(olg, ctxt, index);
185 llog_ctxt_destroy(ctxt);
187 ctxt = llog_group_get_ctxt(olg, index);
190 * mds_lov_update_desc() might call here multiple
191 * times. So if the llog is already set up then
192 * don't to do it again.
194 CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
195 obd->obd_name, index);
196 LASSERT(ctxt->loc_olg == olg);
197 LASSERT(ctxt->loc_obd == obd);
198 LASSERT(ctxt->loc_exp == disk_obd->obd_self_export);
199 LASSERT(ctxt->loc_logops == op);
207 if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) {
211 rc = op->lop_setup(obd, olg, index, disk_obd, count,
216 CERROR("obd %s ctxt %d lop_setup=%p failed %d\n",
217 obd->obd_name, index, op->lop_setup, rc);
220 CDEBUG(D_CONFIG, "obd %s ctxt %d is initialized\n",
221 obd->obd_name, index);
222 ctxt->loc_flags &= ~LLOG_CTXT_FLAG_UNINITIALIZED;
227 EXPORT_SYMBOL(llog_setup_named);
229 int llog_setup(struct obd_device *obd, struct obd_llog_group *olg,
230 int index, struct obd_device *disk_obd, int count,
231 struct llog_logid *logid, struct llog_operations *op)
233 return llog_setup_named(obd,olg,index,disk_obd,count,logid,NULL,op);
235 EXPORT_SYMBOL(llog_setup);
237 int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp)
245 if (CTXTP(ctxt, sync))
246 rc = CTXTP(ctxt, sync)(ctxt, exp);
250 EXPORT_SYMBOL(llog_sync);
252 int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
253 struct lov_stripe_md *lsm, struct llog_cookie *logcookies,
264 if (ctxt->loc_flags & LLOG_CTXT_FLAG_UNINITIALIZED)
268 CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP);
269 raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
271 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
272 rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies);
274 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
277 EXPORT_SYMBOL(llog_add);
279 int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
280 int count, struct llog_cookie *cookies, int flags)
290 CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
291 rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags);
294 EXPORT_SYMBOL(llog_cancel);
296 /* callback func for llog_process in llog_obd_origin_setup */
297 static int cat_cancel_cb(struct llog_handle *cathandle,
298 struct llog_rec_hdr *rec, void *data)
300 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
301 struct llog_handle *loghandle;
302 struct llog_log_hdr *llh;
306 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
307 CERROR("invalid record in catalog\n");
310 CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
311 LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
312 rec->lrh_index, cathandle->lgh_id.lgl_oid);
314 rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
316 CERROR("Cannot find handle for log "LPX64"\n",
317 lir->lid_id.lgl_oid);
321 llh = loghandle->lgh_hdr;
322 if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
323 (llh->llh_count == 1)) {
324 rc = llog_destroy(loghandle);
326 CERROR("failure destroying log in postsetup: %d\n", rc);
328 index = loghandle->u.phd.phd_cookie.lgc_index;
329 llog_free_handle(loghandle);
332 llog_cat_set_first_idx(cathandle, index);
333 rc = llog_cancel_rec(cathandle, index);
335 CDEBUG(D_HA, "cancel log "LPX64":%x at index %u of catalog "
336 LPX64"\n", lir->lid_id.lgl_oid,
337 lir->lid_id.lgl_ogen, rec->lrh_index,
338 cathandle->lgh_id.lgl_oid);
344 /* lop_setup method for filter/osc */
345 // XXX how to set exports
346 int llog_obd_origin_setup(struct obd_device *obd, struct obd_llog_group *olg,
347 int index, struct obd_device *disk_obd, int count,
348 struct llog_logid *logid, const char *name)
350 struct llog_ctxt *ctxt;
351 struct llog_handle *handle;
352 struct lvfs_run_ctxt saved;
361 LASSERT(olg != NULL);
362 ctxt = llog_group_get_ctxt(olg, index);
366 if (logid && logid->lgl_oid) {
367 rc = llog_create(ctxt, &handle, logid, NULL);
369 rc = llog_create(ctxt, &handle, NULL, (char *)name);
371 *logid = handle->lgh_id;
376 ctxt->loc_handle = handle;
377 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
378 rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL);
379 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
383 rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
385 CERROR("llog_process() with cat_cancel_cb failed: %d\n", rc);
391 EXPORT_SYMBOL(llog_obd_origin_setup);
393 int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
395 struct llog_handle *cathandle, *n, *loghandle;
396 struct llog_log_hdr *llh;
403 cathandle = ctxt->loc_handle;
405 list_for_each_entry_safe(loghandle, n,
406 &cathandle->u.chd.chd_head,
408 llh = loghandle->lgh_hdr;
409 if ((llh->llh_flags &
410 LLOG_F_ZAP_WHEN_EMPTY) &&
411 (llh->llh_count == 1)) {
412 rc = llog_destroy(loghandle);
414 CERROR("failure destroying log during "
415 "cleanup: %d\n", rc);
417 index = loghandle->u.phd.phd_cookie.lgc_index;
418 llog_free_handle(loghandle);
421 llog_cat_set_first_idx(cathandle, index);
422 rc = llog_cancel_rec(cathandle, index);
424 CDEBUG(D_RPCTRACE, "cancel plain log at"
425 "index %u of catalog "LPX64"\n",
426 index,cathandle->lgh_id.lgl_oid);
429 llog_cat_put(ctxt->loc_handle);
433 EXPORT_SYMBOL(llog_obd_origin_cleanup);
435 /* add for obdfilter/sz and mds/unlink */
436 int llog_obd_origin_add(struct llog_ctxt *ctxt,
437 struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
438 struct llog_cookie *logcookies, int numcookies)
440 struct llog_handle *cathandle;
444 cathandle = ctxt->loc_handle;
445 LASSERT(cathandle != NULL);
446 rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
447 if (rc != 0 && rc != 1)
448 CERROR("write one catalog record failed: %d\n", rc);
451 EXPORT_SYMBOL(llog_obd_origin_add);
453 int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
454 struct obd_device *disk_obd, int *index)
458 OBD_CHECK_DT_OP(obd, llog_init, 0);
459 OBD_COUNTER_INCREMENT(obd, llog_init);
461 rc = OBP(obd, llog_init)(obd, olg, disk_obd, index);
464 EXPORT_SYMBOL(obd_llog_init);
466 int obd_llog_finish(struct obd_device *obd, int count)
470 OBD_CHECK_DT_OP(obd, llog_finish, 0);
471 OBD_COUNTER_INCREMENT(obd, llog_finish);
473 rc = OBP(obd, llog_finish)(obd, count);
476 EXPORT_SYMBOL(obd_llog_finish);