1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2005 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_LOG
32 #include <liblustre.h>
35 #include <obd_class.h>
36 #include <lustre_log.h>
37 #include <libcfs/list.h>
38 #include "llog_internal.h"
40 /* helper functions for calling the llog obd methods */
42 int llog_cleanup(struct llog_ctxt *ctxt)
52 if (CTXTP(ctxt, cleanup))
53 rc = CTXTP(ctxt, cleanup)(ctxt);
55 ctxt->loc_obd->obd_llog_ctxt[ctxt->loc_idx] = NULL;
57 class_export_put(ctxt->loc_exp);
58 OBD_FREE(ctxt, sizeof(*ctxt));
62 EXPORT_SYMBOL(llog_cleanup);
64 int llog_setup(struct obd_device *obd, int index, struct obd_device *disk_obd,
65 int count, struct llog_logid *logid, struct llog_operations *op)
68 struct llog_ctxt *ctxt;
71 if (index < 0 || index >= LLOG_MAX_CTXTS)
74 if (obd->obd_llog_ctxt[index]) {
75 /* mds_lov_update_mds might call here multiple times. So if the
76 llog is already set up then don't to do it again. */
77 CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
78 obd->obd_name, index);
79 ctxt = obd->obd_llog_ctxt[index];
80 LASSERT(ctxt->loc_obd == obd);
81 LASSERT(ctxt->loc_exp == disk_obd->obd_self_export);
82 LASSERT(ctxt->loc_logops == op);
86 OBD_ALLOC(ctxt, sizeof(*ctxt));
88 GOTO(out, rc = -ENOMEM);
90 obd->obd_llog_ctxt[index] = ctxt;
92 ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
93 ctxt->loc_idx = index;
94 ctxt->loc_logops = op;
95 sema_init(&ctxt->loc_sem, 1);
98 rc = op->lop_setup(obd, index, disk_obd, count, logid);
101 obd->obd_llog_ctxt[index] = NULL;
102 class_export_put(ctxt->loc_exp);
103 OBD_FREE(ctxt, sizeof(*ctxt));
109 EXPORT_SYMBOL(llog_setup);
111 int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp)
119 if (CTXTP(ctxt, sync))
120 rc = CTXTP(ctxt, sync)(ctxt, exp);
124 EXPORT_SYMBOL(llog_sync);
126 int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
127 struct lov_stripe_md *lsm, struct llog_cookie *logcookies,
138 CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP);
139 rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies);
142 EXPORT_SYMBOL(llog_add);
144 int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
145 int count, struct llog_cookie *cookies, int flags)
155 CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
156 rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags);
159 EXPORT_SYMBOL(llog_cancel);
161 /* callback func for llog_process in llog_obd_origin_setup */
162 static int cat_cancel_cb(struct llog_handle *cathandle,
163 struct llog_rec_hdr *rec, void *data)
165 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
166 struct llog_handle *loghandle;
167 struct llog_log_hdr *llh;
171 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
172 CERROR("invalid record in catalog\n");
175 CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
176 LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
177 rec->lrh_index, cathandle->lgh_id.lgl_oid);
179 rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
181 CERROR("Cannot find handle for log "LPX64"\n",
182 lir->lid_id.lgl_oid);
186 llh = loghandle->lgh_hdr;
187 if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
188 (llh->llh_count == 1)) {
189 rc = llog_destroy(loghandle);
191 CERROR("failure destroying log in postsetup: %d\n", rc);
193 index = loghandle->u.phd.phd_cookie.lgc_index;
194 llog_free_handle(loghandle);
197 llog_cat_set_first_idx(cathandle, index);
198 rc = llog_cancel_rec(cathandle, index);
200 CDEBUG(D_HA, "cancel log "LPX64":%x at index %u of "
201 "catalog "LPX64"\n", lir->lid_id.lgl_oid,
202 lir->lid_id.lgl_ogen, rec->lrh_index,
203 cathandle->lgh_id.lgl_oid);
209 /* lop_setup method for filter/osc */
210 // XXX how to set exports
211 int llog_obd_origin_setup(struct obd_device *obd, int index,
212 struct obd_device *disk_obd, int count,
213 struct llog_logid *logid)
215 struct llog_ctxt *ctxt;
216 struct llog_handle *handle;
217 struct lvfs_run_ctxt saved;
226 ctxt = llog_get_context(obd, index);
231 rc = llog_create(ctxt, &handle, logid, NULL);
233 rc = llog_create(ctxt, &handle, NULL, NULL);
235 *logid = handle->lgh_id;
240 ctxt->loc_handle = handle;
241 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
242 rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL);
243 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
247 rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
249 CERROR("llog_process with cat_cancel_cb failed: %d\n", rc);
253 EXPORT_SYMBOL(llog_obd_origin_setup);
255 int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
257 struct llog_handle *cathandle, *n, *loghandle;
258 struct llog_log_hdr *llh;
265 cathandle = ctxt->loc_handle;
267 list_for_each_entry_safe(loghandle, n,
268 &cathandle->u.chd.chd_head,
270 llh = loghandle->lgh_hdr;
271 if ((llh->llh_flags &
272 LLOG_F_ZAP_WHEN_EMPTY) &&
273 (llh->llh_count == 1)) {
274 rc = llog_destroy(loghandle);
276 CERROR("failure destroying log during "
277 "cleanup: %d\n", rc);
279 index = loghandle->u.phd.phd_cookie.lgc_index;
280 llog_free_handle(loghandle);
283 llog_cat_set_first_idx(cathandle, index);
284 rc = llog_cancel_rec(cathandle, index);
286 CDEBUG(D_HA, "cancel plain log at index"
287 " %u of catalog "LPX64"\n",
288 index,cathandle->lgh_id.lgl_oid);
291 llog_cat_put(ctxt->loc_handle);
295 EXPORT_SYMBOL(llog_obd_origin_cleanup);
297 /* add for obdfilter/sz and mds/unlink */
298 int llog_obd_origin_add(struct llog_ctxt *ctxt,
299 struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
300 struct llog_cookie *logcookies, int numcookies)
302 struct llog_handle *cathandle;
306 cathandle = ctxt->loc_handle;
307 LASSERT(cathandle != NULL);
308 rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
310 CERROR("write one catalog record failed: %d\n", rc);
313 EXPORT_SYMBOL(llog_obd_origin_add);
315 int llog_cat_initialize(struct obd_device *obd, int count,
316 struct obd_uuid *uuid)
318 char name[32] = CATLIST;
319 struct llog_catid *idarray;
320 int size = sizeof(*idarray) * count;
324 OBD_ALLOC(idarray, size);
328 rc = llog_get_cat_list(obd, obd, name, count, idarray);
330 CERROR("rc: %d\n", rc);
334 rc = obd_llog_init(obd, obd, count, idarray, uuid);
336 CERROR("rc: %d\n", rc);
340 rc = llog_put_cat_list(obd, obd, name, count, idarray);
342 CERROR("rc: %d\n", rc);
347 OBD_FREE(idarray, size);
350 EXPORT_SYMBOL(llog_cat_initialize);
352 int obd_llog_init(struct obd_device *obd, struct obd_device *disk_obd,
353 int count, struct llog_catid *logid, struct obd_uuid *uuid)
357 OBD_CHECK_OP(obd, llog_init, 0);
358 OBD_COUNTER_INCREMENT(obd, llog_init);
360 rc = OBP(obd, llog_init)(obd, disk_obd, count, logid, uuid);
363 EXPORT_SYMBOL(obd_llog_init);
365 int obd_llog_finish(struct obd_device *obd, int count)
369 OBD_CHECK_OP(obd, llog_finish, 0);
370 OBD_COUNTER_INCREMENT(obd, llog_finish);
372 rc = OBP(obd, llog_finish)(obd, count);
375 EXPORT_SYMBOL(obd_llog_finish);