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;
57 OBD_ALLOC(ctxt, sizeof(*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);
72 class_import_put(ctxt->loc_imp);
75 LASSERT(ctxt->loc_llcd == NULL);
76 OBD_FREE(ctxt, sizeof(*ctxt));
80 int __llog_ctxt_put(struct llog_ctxt *ctxt)
82 struct obd_device *obd;
86 spin_lock(&obd->obd_dev_lock);
87 if (!atomic_dec_and_test(&ctxt->loc_refcount)) {
88 spin_unlock(&obd->obd_dev_lock);
91 obd->obd_llog_ctxt[ctxt->loc_idx] = NULL;
92 spin_unlock(&obd->obd_dev_lock);
94 LASSERTF(obd->obd_starting == 1 ||
95 obd->obd_stopping == 1 || obd->obd_set_up == 0,
96 "wrong obd state: %d/%d/%d\n", !!obd->obd_starting,
97 !!obd->obd_stopping, !!obd->obd_set_up);
99 /* cleanup the llog ctxt here */
100 if (CTXTP(ctxt, cleanup))
101 rc = CTXTP(ctxt, cleanup)(ctxt);
103 llog_ctxt_destroy(ctxt);
104 wake_up(&obd->obd_llog_waitq);
107 EXPORT_SYMBOL(__llog_ctxt_put);
109 int llog_cleanup(struct llog_ctxt *ctxt)
111 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
112 struct obd_device *obd;
122 /*banlance the ctxt get when calling llog_cleanup */
125 /* sync with other llog ctxt user thread */
126 spin_lock(&obd->obd_dev_lock);
128 /* obd->obd_starting is needed for the case of cleanup
129 * in error case while obd is starting up. */
130 LASSERTF(obd->obd_starting == 1 ||
131 obd->obd_stopping == 1 || obd->obd_set_up == 0,
132 "wrong obd state: %d/%d/%d\n", !!obd->obd_starting,
133 !!obd->obd_stopping, !!obd->obd_set_up);
135 spin_unlock(&obd->obd_dev_lock);
138 /*try to free the ctxt */
139 rc = __llog_ctxt_put(ctxt);
141 CERROR("Error %d while cleaning up ctxt %p\n",
144 l_wait_event(obd->obd_llog_waitq, llog_ctxt_null(obd, idx), &lwi);
148 EXPORT_SYMBOL(llog_cleanup);
150 int llog_setup(struct obd_device *obd, int index, struct obd_device *disk_obd,
151 int count, struct llog_logid *logid, struct llog_operations *op)
154 struct llog_ctxt *ctxt, *old_ctxt;
157 if (index < 0 || index >= LLOG_MAX_CTXTS)
160 ctxt = llog_new_ctxt(obd);
162 GOTO(out, rc = -ENOMEM);
164 ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
165 ctxt->loc_idx = index;
166 ctxt->loc_logops = op;
167 ctxt->loc_flags = LLOG_CTXT_FLAG_UNINITIALIZED;
168 sema_init(&ctxt->loc_sem, 1);
170 /* sync with other llog ctxt user thread */
171 spin_lock(&obd->obd_dev_lock);
172 old_ctxt = obd->obd_llog_ctxt[index];
174 /* mds_lov_update_mds might call here multiple times. So if the
175 llog is already set up then don't to do it again. */
176 CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
177 obd->obd_name, index);
178 LASSERT(old_ctxt->loc_obd == obd);
179 LASSERT(old_ctxt->loc_exp == disk_obd->obd_self_export);
180 LASSERT(old_ctxt->loc_logops == op);
181 spin_unlock(&obd->obd_dev_lock);
183 llog_ctxt_destroy(ctxt);
188 obd->obd_llog_ctxt[index] = ctxt;
189 spin_unlock(&obd->obd_dev_lock);
191 if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) {
195 rc = op->lop_setup(obd, index, disk_obd, count, logid);
199 CERROR("obd %s ctxt %d lop_setup=%p failed %d\n",
200 obd->obd_name, index, op->lop_setup, rc);
203 CDEBUG(D_CONFIG, "obd %s ctxt %d is initialized\n",
204 obd->obd_name, index);
205 ctxt->loc_flags &= ~LLOG_CTXT_FLAG_UNINITIALIZED;
210 EXPORT_SYMBOL(llog_setup);
212 int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp)
220 if (CTXTP(ctxt, sync))
221 rc = CTXTP(ctxt, sync)(ctxt, exp);
225 EXPORT_SYMBOL(llog_sync);
227 int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
228 struct lov_stripe_md *lsm, struct llog_cookie *logcookies,
239 if (ctxt->loc_flags & LLOG_CTXT_FLAG_UNINITIALIZED)
242 CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP);
243 raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
245 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
246 rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies);
248 cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
251 EXPORT_SYMBOL(llog_add);
253 int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
254 int count, struct llog_cookie *cookies, int flags)
264 CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
265 rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags);
268 EXPORT_SYMBOL(llog_cancel);
270 /* callback func for llog_process in llog_obd_origin_setup */
271 static int cat_cancel_cb(struct llog_handle *cathandle,
272 struct llog_rec_hdr *rec, void *data)
274 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
275 struct llog_handle *loghandle;
276 struct llog_log_hdr *llh;
280 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
281 CERROR("invalid record in catalog\n");
284 CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
285 LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
286 rec->lrh_index, cathandle->lgh_id.lgl_oid);
288 rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
290 CERROR("Cannot find handle for log "LPX64"\n",
291 lir->lid_id.lgl_oid);
295 llh = loghandle->lgh_hdr;
296 if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
297 (llh->llh_count == 1)) {
298 rc = llog_destroy(loghandle);
300 CERROR("failure destroying log in postsetup: %d\n", rc);
302 index = loghandle->u.phd.phd_cookie.lgc_index;
303 llog_free_handle(loghandle);
306 llog_cat_set_first_idx(cathandle, index);
307 rc = llog_cancel_rec(cathandle, index);
309 CDEBUG(D_HA, "cancel log "LPX64":%x at index %u of "
310 "catalog "LPX64"\n", lir->lid_id.lgl_oid,
311 lir->lid_id.lgl_ogen, rec->lrh_index,
312 cathandle->lgh_id.lgl_oid);
318 /* lop_setup method for filter/osc */
319 // XXX how to set exports
320 int llog_obd_origin_setup(struct obd_device *obd, int index,
321 struct obd_device *disk_obd, int count,
322 struct llog_logid *logid)
324 struct llog_ctxt *ctxt;
325 struct llog_handle *handle;
326 struct lvfs_run_ctxt *saved = NULL;
333 OBD_SLAB_ALLOC_PTR(saved, obd_lvfs_ctxt_cache);
339 ctxt = llog_get_context(obd, index);
344 rc = llog_create(ctxt, &handle, logid, NULL);
346 rc = llog_create(ctxt, &handle, NULL, NULL);
348 *logid = handle->lgh_id;
353 ctxt->loc_handle = handle;
354 push_ctxt(saved, &disk_obd->obd_lvfs_ctxt, NULL);
355 rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL);
356 pop_ctxt(saved, &disk_obd->obd_lvfs_ctxt, NULL);
360 rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
362 CERROR("llog_process with cat_cancel_cb failed: %d\n", rc);
365 OBD_SLAB_FREE_PTR(saved, obd_lvfs_ctxt_cache);
368 EXPORT_SYMBOL(llog_obd_origin_setup);
370 int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
372 struct llog_handle *cathandle, *n, *loghandle;
373 struct llog_log_hdr *llh;
380 cathandle = ctxt->loc_handle;
382 list_for_each_entry_safe(loghandle, n,
383 &cathandle->u.chd.chd_head,
385 llh = loghandle->lgh_hdr;
386 if ((llh->llh_flags &
387 LLOG_F_ZAP_WHEN_EMPTY) &&
388 (llh->llh_count == 1)) {
389 rc = llog_destroy(loghandle);
391 CERROR("failure destroying log during "
392 "cleanup: %d\n", rc);
394 index = loghandle->u.phd.phd_cookie.lgc_index;
395 llog_free_handle(loghandle);
398 llog_cat_set_first_idx(cathandle, index);
399 rc = llog_cancel_rec(cathandle, index);
401 CDEBUG(D_RPCTRACE, "cancel plain log at"
402 "index %u of catalog "LPX64"\n",
403 index,cathandle->lgh_id.lgl_oid);
406 llog_cat_put(ctxt->loc_handle);
410 EXPORT_SYMBOL(llog_obd_origin_cleanup);
412 /* add for obdfilter/sz and mds/unlink */
413 int llog_obd_origin_add(struct llog_ctxt *ctxt,
414 struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
415 struct llog_cookie *logcookies, int numcookies)
417 struct llog_handle *cathandle;
421 cathandle = ctxt->loc_handle;
422 LASSERT(cathandle != NULL);
423 rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
425 CERROR("write one catalog record failed: %d\n", rc);
428 EXPORT_SYMBOL(llog_obd_origin_add);
430 int obd_llog_init(struct obd_device *obd, struct obd_device *disk_obd,
435 OBD_CHECK_OP(obd, llog_init, 0);
436 OBD_COUNTER_INCREMENT(obd, llog_init);
438 rc = OBP(obd, llog_init)(obd, disk_obd, index);
441 EXPORT_SYMBOL(obd_llog_init);
443 int obd_llog_finish(struct obd_device *obd, int count)
447 OBD_CHECK_OP(obd, llog_finish, 0);
448 OBD_COUNTER_INCREMENT(obd, llog_finish);
450 rc = OBP(obd, llog_finish)(obd, count);
453 EXPORT_SYMBOL(obd_llog_finish);