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 cfs_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 cfs_spin_lock(&olg->olg_lock);
88 if (!cfs_atomic_dec_and_test(&ctxt->loc_refcount)) {
89 cfs_spin_unlock(&olg->olg_lock);
92 olg->olg_ctxts[ctxt->loc_idx] = NULL;
93 cfs_spin_unlock(&olg->olg_lock);
96 lcm_put(ctxt->loc_lcm);
99 cfs_spin_lock(&obd->obd_dev_lock);
100 /* sync with llog ctxt user thread */
101 cfs_spin_unlock(&obd->obd_dev_lock);
103 /* obd->obd_starting is needed for the case of cleanup
104 * in error case while obd is starting up. */
105 LASSERTF(obd->obd_starting == 1 ||
106 obd->obd_stopping == 1 || obd->obd_set_up == 0,
107 "wrong obd state: %d/%d/%d\n", !!obd->obd_starting,
108 !!obd->obd_stopping, !!obd->obd_set_up);
110 /* cleanup the llog ctxt here */
111 if (CTXTP(ctxt, cleanup))
112 rc = CTXTP(ctxt, cleanup)(ctxt);
114 llog_ctxt_destroy(ctxt);
115 cfs_waitq_signal(&olg->olg_waitq);
118 EXPORT_SYMBOL(__llog_ctxt_put);
120 int llog_cleanup(struct llog_ctxt *ctxt)
122 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
123 struct obd_llog_group *olg;
127 LASSERT(ctxt != NULL);
128 LASSERT(ctxt != LP_POISON);
131 LASSERT(olg != NULL);
132 LASSERT(olg != LP_POISON);
137 * Banlance the ctxt get when calling llog_cleanup()
139 LASSERT(cfs_atomic_read(&ctxt->loc_refcount) < 0x5a5a5a);
140 LASSERT(cfs_atomic_read(&ctxt->loc_refcount) > 1);
144 * Try to free the ctxt.
146 rc = __llog_ctxt_put(ctxt);
148 CERROR("Error %d while cleaning up ctxt %p\n",
151 l_wait_event(olg->olg_waitq,
152 llog_group_ctxt_null(olg, idx), &lwi);
156 EXPORT_SYMBOL(llog_cleanup);
158 int llog_setup_named(struct obd_device *obd, struct obd_llog_group *olg,
159 int index, struct obd_device *disk_obd, int count,
160 struct llog_logid *logid, const char *logname,
161 struct llog_operations *op)
163 struct llog_ctxt *ctxt;
167 if (index < 0 || index >= LLOG_MAX_CTXTS)
170 LASSERT(olg != NULL);
172 ctxt = llog_new_ctxt(obd);
178 ctxt->loc_idx = index;
179 ctxt->loc_logops = op;
180 cfs_sema_init(&ctxt->loc_sem, 1);
181 ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
182 ctxt->loc_flags = LLOG_CTXT_FLAG_UNINITIALIZED;
184 rc = llog_group_set_ctxt(olg, ctxt, index);
186 llog_ctxt_destroy(ctxt);
188 ctxt = llog_group_get_ctxt(olg, index);
191 * mds_lov_update_desc() might call here multiple
192 * times. So if the llog is already set up then
193 * don't to do it again.
195 CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
196 obd->obd_name, index);
197 LASSERT(ctxt->loc_olg == olg);
198 LASSERT(ctxt->loc_obd == obd);
199 LASSERT(ctxt->loc_exp == disk_obd->obd_self_export);
200 LASSERT(ctxt->loc_logops == op);
208 if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) {
212 rc = op->lop_setup(obd, olg, index, disk_obd, count,
217 CERROR("obd %s ctxt %d lop_setup=%p failed %d\n",
218 obd->obd_name, index, op->lop_setup, rc);
221 CDEBUG(D_CONFIG, "obd %s ctxt %d is initialized\n",
222 obd->obd_name, index);
223 ctxt->loc_flags &= ~LLOG_CTXT_FLAG_UNINITIALIZED;
228 EXPORT_SYMBOL(llog_setup_named);
230 int llog_setup(struct obd_device *obd, struct obd_llog_group *olg,
231 int index, struct obd_device *disk_obd, int count,
232 struct llog_logid *logid, struct llog_operations *op)
234 return llog_setup_named(obd,olg,index,disk_obd,count,logid,NULL,op);
236 EXPORT_SYMBOL(llog_setup);
238 int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp)
246 if (CTXTP(ctxt, sync))
247 rc = CTXTP(ctxt, sync)(ctxt, exp);
251 EXPORT_SYMBOL(llog_sync);
253 int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
254 struct lov_stripe_md *lsm, struct llog_cookie *logcookies,
265 if (ctxt->loc_flags & LLOG_CTXT_FLAG_UNINITIALIZED)
269 CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP);
270 raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
272 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
273 rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies);
275 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
278 EXPORT_SYMBOL(llog_add);
280 int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
281 int count, struct llog_cookie *cookies, int flags)
291 CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
292 rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags);
295 EXPORT_SYMBOL(llog_cancel);
297 /* callback func for llog_process in llog_obd_origin_setup */
298 static int cat_cancel_cb(struct llog_handle *cathandle,
299 struct llog_rec_hdr *rec, void *data)
301 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
302 struct llog_handle *loghandle;
303 struct llog_log_hdr *llh;
307 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
308 CERROR("invalid record in catalog\n");
311 CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
312 LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
313 rec->lrh_index, cathandle->lgh_id.lgl_oid);
315 rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
317 CERROR("Cannot find handle for log "LPX64"\n",
318 lir->lid_id.lgl_oid);
322 llh = loghandle->lgh_hdr;
323 if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
324 (llh->llh_count == 1)) {
325 rc = llog_destroy(loghandle);
327 CERROR("failure destroying log in postsetup: %d\n", rc);
329 index = loghandle->u.phd.phd_cookie.lgc_index;
330 llog_free_handle(loghandle);
333 llog_cat_set_first_idx(cathandle, index);
334 rc = llog_cancel_rec(cathandle, index);
336 CDEBUG(D_HA, "cancel log "LPX64":%x at index %u of catalog "
337 LPX64"\n", lir->lid_id.lgl_oid,
338 lir->lid_id.lgl_ogen, rec->lrh_index,
339 cathandle->lgh_id.lgl_oid);
345 /* lop_setup method for filter/osc */
346 // XXX how to set exports
347 int llog_obd_origin_setup(struct obd_device *obd, struct obd_llog_group *olg,
348 int index, struct obd_device *disk_obd, int count,
349 struct llog_logid *logid, const char *name)
351 struct llog_ctxt *ctxt;
352 struct llog_handle *handle;
353 struct lvfs_run_ctxt saved;
362 LASSERT(olg != NULL);
363 ctxt = llog_group_get_ctxt(olg, index);
367 if (logid && logid->lgl_oid) {
368 rc = llog_create(ctxt, &handle, logid, NULL);
370 rc = llog_create(ctxt, &handle, NULL, (char *)name);
372 *logid = handle->lgh_id;
377 ctxt->loc_handle = handle;
378 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
379 rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL);
380 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
384 rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
386 CERROR("llog_process() with cat_cancel_cb failed: %d\n", rc);
392 EXPORT_SYMBOL(llog_obd_origin_setup);
394 int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
396 struct llog_handle *cathandle, *n, *loghandle;
397 struct llog_log_hdr *llh;
404 cathandle = ctxt->loc_handle;
406 cfs_list_for_each_entry_safe(loghandle, n,
407 &cathandle->u.chd.chd_head,
409 llh = loghandle->lgh_hdr;
410 if ((llh->llh_flags &
411 LLOG_F_ZAP_WHEN_EMPTY) &&
412 (llh->llh_count == 1)) {
413 rc = llog_destroy(loghandle);
415 CERROR("failure destroying log during "
416 "cleanup: %d\n", rc);
418 index = loghandle->u.phd.phd_cookie.lgc_index;
419 llog_free_handle(loghandle);
422 llog_cat_set_first_idx(cathandle, index);
423 rc = llog_cancel_rec(cathandle, index);
425 CDEBUG(D_RPCTRACE, "cancel plain log at"
426 "index %u of catalog "LPX64"\n",
427 index,cathandle->lgh_id.lgl_oid);
430 llog_cat_put(ctxt->loc_handle);
434 EXPORT_SYMBOL(llog_obd_origin_cleanup);
436 /* add for obdfilter/sz and mds/unlink */
437 int llog_obd_origin_add(struct llog_ctxt *ctxt,
438 struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
439 struct llog_cookie *logcookies, int numcookies)
441 struct llog_handle *cathandle;
445 cathandle = ctxt->loc_handle;
446 LASSERT(cathandle != NULL);
447 rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
448 if (rc != 0 && rc != 1)
449 CERROR("write one catalog record failed: %d\n", rc);
452 EXPORT_SYMBOL(llog_obd_origin_add);
454 int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
455 struct obd_device *disk_obd, int *index)
459 OBD_CHECK_DT_OP(obd, llog_init, 0);
460 OBD_COUNTER_INCREMENT(obd, llog_init);
462 rc = OBP(obd, llog_init)(obd, olg, disk_obd, index);
465 EXPORT_SYMBOL(obd_llog_init);
467 int obd_llog_finish(struct obd_device *obd, int count)
471 OBD_CHECK_DT_OP(obd, llog_finish, 0);
472 OBD_COUNTER_INCREMENT(obd, llog_finish);
474 rc = OBP(obd, llog_finish)(obd, count);
477 EXPORT_SYMBOL(obd_llog_finish);