-
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-#ifdef __KERNEL__
-#include <linux/fs.h>
-#else
-#include <liblustre.h>
-#endif
-
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <portals/list.h>
+#include <obd_class.h>
+#include <lustre_log.h>
+#include "llog_internal.h"
/* helper functions for calling the llog obd methods */
-
-int obd_llog_setup(struct obd_device *obd, struct obd_llogs *llogs,
- int index, struct obd_device *disk_obd, int count,
- struct llog_logid *logid, struct llog_operations *op)
+static struct llog_ctxt* llog_new_ctxt(struct obd_device *obd)
{
- int rc = 0;
struct llog_ctxt *ctxt;
- ENTRY;
-
- LASSERT(llogs);
-
- if (index < 0 || index >= LLOG_MAX_CTXTS)
- RETURN(-EFAULT);
- OBD_ALLOC(ctxt, sizeof(*ctxt));
+ OBD_ALLOC_PTR(ctxt);
if (!ctxt)
- RETURN(-ENOMEM);
+ return NULL;
- llogs->llog_ctxt[index] = ctxt;
- obd->obd_llog_ctxt[index] = ctxt;
- ctxt->loc_logops = op;
ctxt->loc_obd = obd;
- ctxt->loc_llogs = llogs;
- ctxt->loc_idx = index;
- ctxt->loc_alone = 0;
- ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
- sema_init(&ctxt->loc_sem, 1);
-
- if (op->lop_close == llog_lvfs_ops.lop_close) {
- ctxt->loc_fsops = disk_obd->obd_fsops;
- ctxt->loc_lvfs_ctxt = &disk_obd->obd_lvfs_ctxt;
- if (!strcmp(disk_obd->obd_type->typ_name, LUSTRE_MDS_NAME)) {
- struct mds_obd *mds = &disk_obd->u.mds;
- ctxt->loc_objects_dir = mds->mds_objects_dir;
- ctxt->loc_logs_dir = mds->mds_logs_dir;
- }
- }
+ atomic_set(&ctxt->loc_refcount, 1);
- if (op->lop_setup)
- rc = op->lop_setup(obd, llogs, index, disk_obd, count, logid);
- if (ctxt && rc) {
- obd->obd_llog_ctxt[index] = NULL;
- OBD_FREE(ctxt, sizeof(*ctxt));
- }
+ return ctxt;
+}
- RETURN(rc);
+static void llog_ctxt_destroy(struct llog_ctxt *ctxt)
+{
+ if (ctxt->loc_exp) {
+ class_export_put(ctxt->loc_exp);
+ ctxt->loc_exp = NULL;
+ }
+ if (ctxt->loc_imp) {
+ class_import_put(ctxt->loc_imp);
+ ctxt->loc_imp = NULL;
+ }
+ OBD_FREE_PTR(ctxt);
}
-EXPORT_SYMBOL(obd_llog_setup);
-int obd_llog_cleanup(struct llog_ctxt *ctxt)
+int __llog_ctxt_put(const struct lu_env *env, struct llog_ctxt *ctxt)
{
+ struct obd_llog_group *olg = ctxt->loc_olg;
+ struct obd_device *obd;
int rc = 0;
- ENTRY;
- LASSERT(ctxt);
-
- if (CTXTP(ctxt, cleanup))
- rc = CTXTP(ctxt, cleanup)(ctxt);
-
- ctxt->loc_obd->obd_llog_ctxt[ctxt->loc_idx] = NULL;
- ctxt->loc_llogs->llog_ctxt[ctxt->loc_idx] = NULL;
- class_export_put(ctxt->loc_exp);
- ctxt->loc_exp = NULL;
- OBD_FREE(ctxt, sizeof(*ctxt));
- RETURN(rc);
+ spin_lock(&olg->olg_lock);
+ if (!atomic_dec_and_test(&ctxt->loc_refcount)) {
+ spin_unlock(&olg->olg_lock);
+ return rc;
+ }
+ olg->olg_ctxts[ctxt->loc_idx] = NULL;
+ spin_unlock(&olg->olg_lock);
+
+ obd = ctxt->loc_obd;
+ spin_lock(&obd->obd_dev_lock);
+ /* sync with llog ctxt user thread */
+ spin_unlock(&obd->obd_dev_lock);
+
+ /* obd->obd_starting is needed for the case of cleanup
+ * in error case while obd is starting up. */
+ LASSERTF(obd->obd_starting == 1 ||
+ obd->obd_stopping == 1 || obd->obd_set_up == 0,
+ "wrong obd state: %d/%d/%d\n", !!obd->obd_starting,
+ !!obd->obd_stopping, !!obd->obd_set_up);
+
+ /* cleanup the llog ctxt here */
+ if (CTXTP(ctxt, cleanup))
+ rc = CTXTP(ctxt, cleanup)(env, ctxt);
+
+ llog_ctxt_destroy(ctxt);
+ wake_up(&olg->olg_waitq);
+ return rc;
}
-EXPORT_SYMBOL(obd_llog_cleanup);
+EXPORT_SYMBOL(__llog_ctxt_put);
-/* callback func for llog_process in llog_obd_origin_setup */
-static int cat_cancel_cb(struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, void *data)
+int llog_cleanup(const struct lu_env *env, struct llog_ctxt *ctxt)
{
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *loghandle;
- struct llog_log_hdr *llh;
- int rc, index;
+ struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
+ struct obd_llog_group *olg;
+ int rc, idx;
ENTRY;
- if (rec->lrh_type != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- RETURN(-EINVAL);
- }
- CWARN("processing log "LPX64":%x at index %u of catalog "LPX64"\n",
- lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
- rec->lrh_index, cathandle->lgh_id.lgl_oid);
+ LASSERT(ctxt != NULL);
+ LASSERT(ctxt != LP_POISON);
- rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
- if (rc) {
- CERROR("Cannot find handle for log "LPX64"\n",
- lir->lid_id.lgl_oid);
- RETURN(rc);
- }
+ olg = ctxt->loc_olg;
+ LASSERT(olg != NULL);
+ LASSERT(olg != LP_POISON);
- llh = loghandle->lgh_hdr;
- if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1)) {
- rc = llog_destroy(loghandle);
- if (rc)
- CERROR("failure destroying log in postsetup: %d\n", rc);
- LASSERT(rc == 0);
-
- index = loghandle->u.phd.phd_cookie.lgc_index;
- llog_free_handle(loghandle);
-
- LASSERT(index);
- llog_cat_set_first_idx(cathandle, index);
- rc = llog_cancel_rec(cathandle, index);
- if (rc == 0)
- CWARN("cancel log "LPX64":%x at index %u of catalog "
- LPX64"\n", lir->lid_id.lgl_oid,
- lir->lid_id.lgl_ogen, rec->lrh_index,
- cathandle->lgh_id.lgl_oid);
- }
+ idx = ctxt->loc_idx;
+
+ /*
+ * Banlance the ctxt get when calling llog_cleanup()
+ */
+ LASSERT(atomic_read(&ctxt->loc_refcount) < LI_POISON);
+ LASSERT(atomic_read(&ctxt->loc_refcount) > 1);
+ llog_ctxt_put(ctxt);
+
+ /*
+ * Try to free the ctxt.
+ */
+ rc = __llog_ctxt_put(env, ctxt);
+ if (rc)
+ CERROR("Error %d while cleaning up ctxt %p\n",
+ rc, ctxt);
+
+ l_wait_event(olg->olg_waitq,
+ llog_group_ctxt_null(olg, idx), &lwi);
RETURN(rc);
}
+EXPORT_SYMBOL(llog_cleanup);
-/* lop_setup method for filter/osc */
-// XXX how to set exports
-int llog_obd_origin_setup(struct obd_device *obd, struct obd_llogs *llogs,
- int index, struct obd_device *disk_obd, int count,
- struct llog_logid *logid)
+int llog_setup(const struct lu_env *env, struct obd_device *obd,
+ struct obd_llog_group *olg, int index,
+ struct obd_device *disk_obd, struct llog_operations *op)
{
struct llog_ctxt *ctxt;
- struct llog_handle *handle;
- struct lvfs_run_ctxt saved;
- int rc;
+ int rc = 0;
ENTRY;
- if (count == 0)
- RETURN(0);
+ if (index < 0 || index >= LLOG_MAX_CTXTS)
+ RETURN(-EINVAL);
- LASSERT(count == 1);
+ LASSERT(olg != NULL);
- ctxt = llog_get_context(llogs, index);
- LASSERT(ctxt);
- llog_gen_init(ctxt);
+ ctxt = llog_new_ctxt(obd);
+ if (!ctxt)
+ RETURN(-ENOMEM);
- if (logid->lgl_oid)
- rc = llog_create(ctxt, &handle, logid, NULL);
- else {
- rc = llog_create(ctxt, &handle, NULL, NULL);
- if (!rc)
- *logid = handle->lgh_id;
- }
- if (rc)
- RETURN(rc);
+ ctxt->loc_obd = obd;
+ ctxt->loc_olg = olg;
+ ctxt->loc_idx = index;
+ ctxt->loc_logops = op;
+ mutex_init(&ctxt->loc_mutex);
+ ctxt->loc_exp = class_export_get(disk_obd->obd_self_export);
+ ctxt->loc_flags = LLOG_CTXT_FLAG_UNINITIALIZED;
- ctxt->loc_handle = handle;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- rc = llog_init_handle(handle, LLOG_F_IS_CAT, NULL);
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- if (rc)
+ rc = llog_group_set_ctxt(olg, ctxt, index);
+ if (rc) {
+ llog_ctxt_destroy(ctxt);
+ if (rc == -EEXIST) {
+ ctxt = llog_group_get_ctxt(olg, index);
+ if (ctxt) {
+ /*
+ * mds_lov_update_desc() might call here multiple
+ * times. So if the llog is already set up then
+ * don't to do it again.
+ */
+ CDEBUG(D_CONFIG, "obd %s ctxt %d already set up\n",
+ obd->obd_name, index);
+ LASSERT(ctxt->loc_olg == olg);
+ LASSERT(ctxt->loc_obd == obd);
+ LASSERT(ctxt->loc_exp == disk_obd->obd_self_export);
+ LASSERT(ctxt->loc_logops == op);
+ llog_ctxt_put(ctxt);
+ }
+ rc = 0;
+ }
RETURN(rc);
+ }
- rc = llog_process(handle, (llog_cb_t)cat_cancel_cb, NULL, NULL);
- if (rc)
- CERROR("llog_process with cat_cancel_cb failed: %d\n", rc);
-
- if (ctxt && rc) {
- llogs->llog_ctxt[index] = NULL;
- OBD_FREE(ctxt, sizeof(*ctxt));
+ if (op->lop_setup) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP))
+ rc = -EOPNOTSUPP;
+ else
+ rc = op->lop_setup(env, obd, olg, index, disk_obd);
+ }
+
+ if (rc) {
+ CERROR("%s: ctxt %d lop_setup=%p failed: rc = %d\n",
+ obd->obd_name, index, op->lop_setup, rc);
+ llog_group_clear_ctxt(olg, index);
+ llog_ctxt_destroy(ctxt);
+ } else {
+ CDEBUG(D_CONFIG, "obd %s ctxt %d is initialized\n",
+ obd->obd_name, index);
+ ctxt->loc_flags &= ~LLOG_CTXT_FLAG_UNINITIALIZED;
}
+
RETURN(rc);
}
-EXPORT_SYMBOL(llog_obd_origin_setup);
+EXPORT_SYMBOL(llog_setup);
-int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
+int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags)
{
- struct llog_handle *cathandle, *n, *loghandle;
- struct llog_log_hdr *llh;
- int rc, index;
+ int rc = 0;
ENTRY;
if (!ctxt)
- return 0;
-
- cathandle = ctxt->loc_handle;
- if (cathandle) {
- list_for_each_entry_safe(loghandle, n,
- &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
- llh = loghandle->lgh_hdr;
- if ((llh->llh_flags &
- LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1)) {
- rc = llog_destroy(loghandle);
- if (rc)
- CERROR("failure destroying log during "
- "cleanup: %d\n", rc);
- LASSERT(rc == 0);
-
- index = loghandle->u.phd.phd_cookie.lgc_index;
- llog_free_handle(loghandle);
-
- LASSERT(index);
- llog_cat_set_first_idx(cathandle, index);
- rc = llog_cancel_rec(cathandle, index);
- if (rc == 0)
- CDEBUG(D_HA, "cancel plain log at index"
- " %u of catalog "LPX64"\n",
- index,cathandle->lgh_id.lgl_oid);
- }
- }
- llog_cat_put(ctxt->loc_handle);
- }
- return 0;
-}
-EXPORT_SYMBOL(llog_obd_origin_cleanup);
+ RETURN(0);
-/* add for obdfilter/sz and mds/unlink */
-int llog_obd_origin_add(struct llog_ctxt *ctxt,
- struct llog_rec_hdr *rec, struct lov_stripe_md *lsm,
- struct llog_cookie *logcookies, int numcookies)
-{
- struct llog_handle *cathandle;
- int rc;
- ENTRY;
+ if (CTXTP(ctxt, sync))
+ rc = CTXTP(ctxt, sync)(ctxt, exp, flags);
- cathandle = ctxt->loc_handle;
- LASSERT(cathandle != NULL);
- rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
- if (rc != 1)
- CERROR("write one catalog record failed: %d\n", rc);
RETURN(rc);
}
-EXPORT_SYMBOL(llog_obd_origin_add);
+EXPORT_SYMBOL(llog_sync);
-int obd_llog_cat_initialize(struct obd_device *obd, struct obd_llogs *llogs,
- int count, char *name)
+int llog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt,
+ struct llog_cookie *cookies, int flags)
{
- struct llog_catid *idarray;
- int size = sizeof(*idarray) * count;
int rc;
ENTRY;
- OBD_ALLOC(idarray, size);
- if (!idarray)
- RETURN(-ENOMEM);
-
- rc = llog_get_cat_list(&obd->obd_lvfs_ctxt, obd->obd_fsops,
- name, count, idarray);
- if (rc) {
- CERROR("rc: %d\n", rc);
- GOTO(out, rc);
- }
-
- rc = obd_llog_init(obd, llogs, obd, count, idarray);
- if (rc) {
- CERROR("rc: %d\n", rc);
- GOTO(out, rc);
- }
-
- rc = llog_put_cat_list(&obd->obd_lvfs_ctxt, obd->obd_fsops,
- name, count, idarray);
- if (rc) {
- CERROR("rc: %d\n", rc);
- GOTO(out, rc);
+ if (!ctxt) {
+ CERROR("No ctxt\n");
+ RETURN(-ENODEV);
}
- out:
- OBD_FREE(idarray, size);
+ CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
+ rc = CTXTP(ctxt, cancel)(env, ctxt, cookies, flags);
RETURN(rc);
}
-EXPORT_SYMBOL(obd_llog_cat_initialize);
+EXPORT_SYMBOL(llog_cancel);
-int obd_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
- struct obd_device *disk_obd, int count,
- struct llog_catid *logid)
-{
- int rc;
- ENTRY;
- OBD_CHECK_OP(obd, llog_init, 0);
- OBD_COUNTER_INCREMENT(obd, llog_init);
+/* context key constructor/destructor: llog_key_init, llog_key_fini */
+LU_KEY_INIT_FINI(llog, struct llog_thread_info);
+/* context key: llog_thread_key */
+LU_CONTEXT_KEY_DEFINE(llog, LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL);
+LU_KEY_INIT_GENERIC(llog);
+EXPORT_SYMBOL(llog_thread_key);
- rc = OBP(obd, llog_init)(obd, llogs, disk_obd, count, logid);
- RETURN(rc);
+int llog_info_init(void)
+{
+ llog_key_init_generic(&llog_thread_key, NULL);
+ lu_context_key_register(&llog_thread_key);
+ return 0;
}
-EXPORT_SYMBOL(obd_llog_init);
-int obd_llog_finish(struct obd_device *obd, struct obd_llogs *llogs, int count)
+void llog_info_fini(void)
{
- int rc;
- ENTRY;
- OBD_CHECK_OP(obd, llog_finish, 0);
- OBD_COUNTER_INCREMENT(obd, llog_finish);
-
- rc = OBP(obd, llog_finish)(obd, llogs, count);
- RETURN(rc);
+ lu_context_key_degister(&llog_thread_key);
}
-EXPORT_SYMBOL(obd_llog_finish);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff