-
-/* -*- 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * 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.
+ * Copyright (c) 2012, Whamcloud, Inc.
+ */
+/*
+ * 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
+#ifndef __KERNEL__
#include <liblustre.h>
#endif
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <linux/lustre_mds.h>
+#include <obd_class.h>
+#include <lustre_log.h>
#include <libcfs/list.h>
+#include "llog_internal.h"
/* helper functions for calling the llog obd methods */
+static struct llog_ctxt* llog_new_ctxt(struct obd_device *obd)
+{
+ struct llog_ctxt *ctxt;
+
+ OBD_ALLOC_PTR(ctxt);
+ if (!ctxt)
+ return NULL;
-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)
+ ctxt->loc_obd = obd;
+ cfs_atomic_set(&ctxt->loc_refcount, 1);
+
+ return ctxt;
+}
+
+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;
+ }
+ LASSERT(ctxt->loc_llcd == NULL);
+ OBD_FREE_PTR(ctxt);
+}
+
+int __llog_ctxt_put(struct llog_ctxt *ctxt)
+{
+ struct obd_llog_group *olg = ctxt->loc_olg;
+ struct obd_device *obd;
int rc = 0;
- struct llog_ctxt *ctxt;
+
+ cfs_spin_lock(&olg->olg_lock);
+ if (!cfs_atomic_dec_and_test(&ctxt->loc_refcount)) {
+ cfs_spin_unlock(&olg->olg_lock);
+ return rc;
+ }
+ olg->olg_ctxts[ctxt->loc_idx] = NULL;
+ cfs_spin_unlock(&olg->olg_lock);
+
+ if (ctxt->loc_lcm)
+ lcm_put(ctxt->loc_lcm);
+
+ obd = ctxt->loc_obd;
+ cfs_spin_lock(&obd->obd_dev_lock);
+ /* sync with llog ctxt user thread */
+ cfs_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)(ctxt);
+
+ llog_ctxt_destroy(ctxt);
+ cfs_waitq_signal(&olg->olg_waitq);
+ return rc;
+}
+EXPORT_SYMBOL(__llog_ctxt_put);
+
+int llog_cleanup(struct llog_ctxt *ctxt)
+{
+ struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
+ struct obd_llog_group *olg;
+ int rc, idx;
ENTRY;
- LASSERT(llogs);
+ LASSERT(ctxt != NULL);
+ LASSERT(ctxt != LP_POISON);
+
+ olg = ctxt->loc_olg;
+ LASSERT(olg != NULL);
+ LASSERT(olg != LP_POISON);
+
+ idx = ctxt->loc_idx;
+
+ /*
+ * Banlance the ctxt get when calling llog_cleanup()
+ */
+ LASSERT(cfs_atomic_read(&ctxt->loc_refcount) < LI_POISON);
+ LASSERT(cfs_atomic_read(&ctxt->loc_refcount) > 1);
+ llog_ctxt_put(ctxt);
+
+ /*
+ * Try to free the ctxt.
+ */
+ rc = __llog_ctxt_put(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);
+
+int llog_setup_named(struct obd_device *obd, struct obd_llog_group *olg,
+ int index, struct obd_device *disk_obd, int count,
+ struct llog_logid *logid, const char *logname,
+ struct llog_operations *op)
+{
+ struct llog_ctxt *ctxt;
+ int rc = 0;
+ ENTRY;
if (index < 0 || index >= LLOG_MAX_CTXTS)
- RETURN(-EFAULT);
+ RETURN(-EINVAL);
- OBD_ALLOC(ctxt, sizeof(*ctxt));
+ LASSERT(olg != NULL);
+
+ ctxt = llog_new_ctxt(obd);
if (!ctxt)
RETURN(-ENOMEM);
- 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_olg = olg;
ctxt->loc_idx = index;
- ctxt->loc_alone = 0;
+ ctxt->loc_logops = op;
+ cfs_mutex_init(&ctxt->loc_mutex);
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;
+ ctxt->loc_flags = LLOG_CTXT_FLAG_UNINITIALIZED;
+
+ 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);
}
- 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));
+ if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LLOG_SETUP)) {
+ rc = -ENOTSUPP;
+ } else {
+ if (op->lop_setup)
+ rc = op->lop_setup(obd, olg, index, disk_obd, count,
+ logid, logname);
+ }
+
+ if (rc) {
+ CERROR("obd %s ctxt %d lop_setup=%p failed %d\n",
+ obd->obd_name, index, op->lop_setup, rc);
+ llog_ctxt_put(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(obd_llog_setup);
+EXPORT_SYMBOL(llog_setup_named);
-int obd_llog_cleanup(struct llog_ctxt *ctxt)
+int llog_setup(struct obd_device *obd, struct obd_llog_group *olg,
+ int index, struct obd_device *disk_obd, int count,
+ struct llog_logid *logid, struct llog_operations *op)
+{
+ return llog_setup_named(obd,olg,index,disk_obd,count,logid,NULL,op);
+}
+EXPORT_SYMBOL(llog_setup);
+
+int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags)
{
int rc = 0;
ENTRY;
- if (ctxt == NULL)
+ if (!ctxt)
RETURN(0);
- 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));
+ if (CTXTP(ctxt, sync))
+ rc = CTXTP(ctxt, sync)(ctxt, exp, flags);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_sync);
+
+int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
+ struct lov_stripe_md *lsm, struct llog_cookie *logcookies,
+ int numcookies)
+{
+ int raised, rc;
+ ENTRY;
+
+ if (!ctxt) {
+ CERROR("No ctxt\n");
+ RETURN(-ENODEV);
+ }
+
+ if (ctxt->loc_flags & LLOG_CTXT_FLAG_UNINITIALIZED)
+ RETURN(-ENXIO);
+
+
+ CTXT_CHECK_OP(ctxt, add, -EOPNOTSUPP);
+ raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
+ if (!raised)
+ cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
+ rc = CTXTP(ctxt, add)(ctxt, rec, lsm, logcookies, numcookies);
+ if (!raised)
+ cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_add);
+
+int llog_cancel(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
+ int count, struct llog_cookie *cookies, int flags)
+{
+ int rc;
+ ENTRY;
+
+ if (!ctxt) {
+ CERROR("No ctxt\n");
+ RETURN(-ENODEV);
+ }
+
+ CTXT_CHECK_OP(ctxt, cancel, -EOPNOTSUPP);
+ rc = CTXTP(ctxt, cancel)(ctxt, lsm, count, cookies, flags);
RETURN(rc);
}
-EXPORT_SYMBOL(obd_llog_cleanup);
+EXPORT_SYMBOL(llog_cancel);
/* callback func for llog_process in llog_obd_origin_setup */
static int cat_cancel_cb(struct llog_handle *cathandle,
{
struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
struct llog_handle *loghandle;
- int rc;
+ struct llog_log_hdr *llh;
+ int rc, index;
ENTRY;
if (rec->lrh_type != LLOG_LOGID_MAGIC) {
CERROR("invalid record in catalog\n");
RETURN(-EINVAL);
}
- CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "LPX64"\n",
- lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
+ CDEBUG(D_HA, "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);
rc = llog_cat_id2handle(cathandle, &loghandle, &lir->lid_id);
if (rc) {
CERROR("Cannot find handle for log "LPX64"\n",
lir->lid_id.lgl_oid);
+ if (rc == -ENOENT) {
+ index = rec->lrh_index;
+ goto cat_cleanup;
+ }
RETURN(rc);
}
- if (cathandle->lgh_last_idx == loghandle->u.phd.phd_cookie.lgc_index)
- cathandle->u.chd.chd_current_log = loghandle;
+ 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);
+
+ index = loghandle->u.phd.phd_cookie.lgc_index;
+ llog_free_handle(loghandle);
+
+cat_cleanup:
+ LASSERT(index);
+ llog_cat_set_first_idx(cathandle, index);
+ rc = llog_cancel_rec(cathandle, index);
+ if (rc == 0)
+ CDEBUG(D_HA, "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);
+ }
RETURN(rc);
}
/* 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 llog_obd_origin_setup(struct obd_device *obd, struct obd_llog_group *olg,
int index, struct obd_device *disk_obd, int count,
- struct llog_logid *logid)
+ struct llog_logid *logid, const char *name)
{
struct llog_ctxt *ctxt;
struct llog_handle *handle;
LASSERT(count == 1);
- ctxt = llog_get_context(llogs, index);
- LASSERT(ctxt);
- llog_gen_init(ctxt);
+ LASSERT(olg != NULL);
+ ctxt = llog_group_get_ctxt(olg, index);
+ if (!ctxt)
+ RETURN(-ENODEV);
- if (logid->lgl_oid) {
- rc = llog_open(ctxt, &handle, logid, NULL, 0);
+ if (logid && logid->lgl_oid) {
+ rc = llog_create(ctxt, &handle, logid, NULL);
} else {
- rc = llog_open(ctxt, &handle, NULL, NULL, 0);
- if (!rc)
+ rc = llog_create(ctxt, &handle, NULL, (char *)name);
+ if (!rc && logid)
*logid = handle->lgh_id;
}
if (rc)
- RETURN(rc);
+ GOTO(out, rc);
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)
- RETURN(rc);
+ GOTO(out, 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));
- }
- RETURN(rc);
+ CERROR("llog_process() with cat_cancel_cb failed: %d\n", rc);
+ GOTO(out, rc);
+out:
+ llog_ctxt_put(ctxt);
+ return rc;
}
EXPORT_SYMBOL(llog_obd_origin_setup);
-int obd_llog_cat_initialize(struct obd_device *obd, struct obd_llogs *llogs,
- int count, const char *name)
+int llog_obd_origin_cleanup(struct llog_ctxt *ctxt)
{
- struct llog_catid *idarray;
- int size = sizeof(*idarray) * count;
- int rc;
+ struct llog_handle *cathandle, *n, *loghandle;
+ struct llog_log_hdr *llh;
+ int rc, index;
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);
- }
+ if (!ctxt)
+ RETURN(0);
- rc = obd_llog_init(obd, llogs, obd, count, idarray);
- if (rc) {
- CERROR("rc: %d\n", rc);
- GOTO(out, rc);
+ cathandle = ctxt->loc_handle;
+ if (cathandle) {
+ cfs_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);
+
+ 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_RPCTRACE, "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);
- 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);
- }
+/* 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;
- out:
- OBD_FREE(idarray, size);
+ cathandle = ctxt->loc_handle;
+ LASSERT(cathandle != NULL);
+ rc = llog_cat_add_rec(cathandle, rec, logcookies, NULL);
+ if (rc != 0 && rc != 1)
+ CERROR("write one catalog record failed: %d\n", rc);
RETURN(rc);
}
-EXPORT_SYMBOL(obd_llog_cat_initialize);
+EXPORT_SYMBOL(llog_obd_origin_add);
-int obd_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
- struct obd_device *disk_obd, int count,
- struct llog_catid *logid)
+int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
+ struct obd_device *disk_obd, int *index)
{
int rc;
ENTRY;
- OBD_CHECK_OP(obd, llog_init, 0);
+ OBD_CHECK_DT_OP(obd, llog_init, 0);
OBD_COUNTER_INCREMENT(obd, llog_init);
- rc = OBP(obd, llog_init)(obd, llogs, disk_obd, count, logid);
+ rc = OBP(obd, llog_init)(obd, olg, disk_obd, index);
RETURN(rc);
}
EXPORT_SYMBOL(obd_llog_init);
-int obd_llog_finish(struct obd_device *obd, struct obd_llogs *llogs, int count)
+int obd_llog_finish(struct obd_device *obd, int count)
{
int rc;
ENTRY;
- OBD_CHECK_OP(obd, llog_finish, 0);
+ OBD_CHECK_DT_OP(obd, llog_finish, 0);
OBD_COUNTER_INCREMENT(obd, llog_finish);
- rc = OBP(obd, llog_finish)(obd, llogs, count);
+ rc = OBP(obd, llog_finish)(obd, count);
RETURN(rc);
}
EXPORT_SYMBOL(obd_llog_finish);
+
+/* 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);
+
+int llog_info_init(void)
+{
+ llog_key_init_generic(&llog_thread_key, NULL);
+ lu_context_key_register(&llog_thread_key);
+ return 0;
+}
+
+void llog_info_fini(void)
+{
+ lu_context_key_degister(&llog_thread_key);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff