/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2001 Cluster File Systems, Inc. <info@clusterfs.com>
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * 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.
*
- * Lustre 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 for more details.
+ * 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
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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
*
- * Generic infrastructure for managing a collection of logs.
+ * 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 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/include/lustre_log.h
*
+ * Generic infrastructure for managing a collection of logs.
* These logs are used for:
*
* - orphan recovery: OST adds record on create
extern int llog_close(struct llog_handle *cathandle);
extern int llog_get_size(struct llog_handle *loghandle);
-/* llog_cat.c - catalog api */
+/* llog_cat.c - catalog api */
struct llog_process_data {
- void *lpd_data;
- llog_cb_t lpd_cb;
+ /**
+ * Any useful data needed while processing catalog. This is
+ * passed later to process callback.
+ */
+ void *lpd_data;
+ /**
+ * Catalog process callback function, called for each record
+ * in catalog.
+ */
+ llog_cb_t lpd_cb;
};
struct llog_process_cat_data {
- int first_idx;
- int last_idx;
- /* to process catalog across zero record */
+ /**
+ * Temporary stored first_idx while scanning log.
+ */
+ int lpcd_first_idx;
+ /**
+ * Temporary stored last_idx while scanning log.
+ */
+ int lpcd_last_idx;
+};
+
+struct llog_process_cat_args {
+ /**
+ * Llog context used in recovery thread on OST (recov_thread.c)
+ */
+ struct llog_ctxt *lpca_ctxt;
+ /**
+ * Llog callback used in recovery thread on OST (recov_thread.c)
+ */
+ void *lpca_cb;
+ /**
+ * Data pointer for llog callback.
+ */
+ void *lpca_arg;
};
int llog_cat_put(struct llog_handle *cathandle);
int llog_cat_cancel_records(struct llog_handle *cathandle, int count,
struct llog_cookie *cookies);
int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data);
+int llog_cat_process_thread(void *data);
int llog_cat_reverse_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data);
int llog_cat_set_first_idx(struct llog_handle *cathandle, int index);
/* llog_obd.c */
-int 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);
+int llog_setup(struct obd_device *obd, int index, struct obd_device *disk_obd,
+ int count, struct llog_logid *logid,struct llog_operations *op);
+int __llog_ctxt_put(struct llog_ctxt *ctxt);
int llog_cleanup(struct llog_ctxt *);
int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp);
int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec,
int llog_cancel(struct llog_ctxt *, struct lov_stripe_md *lsm,
int count, struct llog_cookie *cookies, int flags);
-int llog_obd_origin_setup(struct obd_device *obd, struct obd_llogs *llogs,
- int index, struct obd_device *disk_obd, int count,
+int llog_obd_origin_setup(struct obd_device *obd, int index,
+ struct obd_device *disk_obd, int count,
struct llog_logid *logid);
int llog_obd_origin_cleanup(struct llog_ctxt *ctxt);
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);
-int llog_cat_initialize(struct obd_device *obd, struct obd_llogs *llogs,
- int count, struct obd_uuid *uuid);
-int obd_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
- struct obd_device *disk_obd, int count,
- struct llog_catid *logid, struct obd_uuid *uuid);
+int obd_llog_init(struct obd_device *obd, struct obd_device *disk_obd,
+ int *idx);
int obd_llog_finish(struct obd_device *obd, int count);
/* llog_net.c */
int llog_initiator_connect(struct llog_ctxt *ctxt);
int llog_receptor_accept(struct llog_ctxt *ctxt, struct obd_import *imp);
-int llog_origin_connect(struct llog_ctxt *ctxt, int count,
+int llog_origin_connect(struct llog_ctxt *ctxt,
struct llog_logid *logid, struct llog_gen *gen,
struct obd_uuid *uuid);
int llog_handle_connect(struct ptlrpc_request *req);
struct lov_stripe_md *lsm, int count,
struct llog_cookie *cookies, int flags);
int llog_obd_repl_sync(struct llog_ctxt *ctxt, struct obd_export *exp);
-int llog_repl_connect(struct llog_ctxt *ctxt, int count,
- struct llog_logid *logid, struct llog_gen *gen,
- struct obd_uuid *uuid);
+int llog_obd_repl_connect(struct llog_ctxt *ctxt,
+ struct llog_logid *logid, struct llog_gen *gen,
+ struct obd_uuid *uuid);
struct llog_operations {
int (*lop_write_rec)(struct llog_handle *loghandle,
int (*lop_close)(struct llog_handle *handle);
int (*lop_read_header)(struct llog_handle *handle);
- int (*lop_setup)(struct obd_device *obd, struct obd_llogs *llogs,
- int ctxt_idx, struct obd_device *disk_obd, int count,
+ int (*lop_setup)(struct obd_device *obd, int ctxt_idx,
+ struct obd_device *disk_obd, int count,
struct llog_logid *logid);
int (*lop_sync)(struct llog_ctxt *ctxt, struct obd_export *exp);
int (*lop_cleanup)(struct llog_ctxt *ctxt);
struct llog_cookie *logcookies, int numcookies);
int (*lop_cancel)(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm,
int count, struct llog_cookie *cookies, int flags);
- int (*lop_connect)(struct llog_ctxt *ctxt, int count,
+ int (*lop_connect)(struct llog_ctxt *ctxt,
struct llog_logid *logid, struct llog_gen *gen,
struct obd_uuid *uuid);
/* XXX add 2 more: commit callbacks and llog recovery functions */
/* llog_lvfs.c */
extern struct llog_operations llog_lvfs_ops;
int llog_get_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
- char *name, int count, struct llog_catid *idarray);
+ char *name, int idx, int count,
+ struct llog_catid *idarray);
+
+int llog_put_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
+ char *name, int idx, int count, struct llog_catid *idarray);
+
+#define LLOG_CTXT_FLAG_UNINITIALIZED 0x00000001
struct llog_ctxt {
int loc_idx; /* my index the obd array of ctxt's */
struct llog_handle *loc_handle;
struct llog_canceld_ctxt *loc_llcd;
struct semaphore loc_sem; /* protects loc_llcd and loc_imp */
+ atomic_t loc_refcount;
+ struct llog_commit_master *loc_lcm;
void *llog_proc_cb;
+ long loc_flags; /* flags, see above defines */
};
+#define LCM_NAME_SIZE 64
+
+struct llog_commit_master {
+ /**
+ * Thread control flags (start, stop, etc.)
+ */
+ long lcm_flags;
+ /**
+ * Number of llcds onthis lcm.
+ */
+ atomic_t lcm_count;
+ /**
+ * Thread control structure. Used for control commit thread.
+ */
+ struct ptlrpcd_ctl lcm_pc;
+ /**
+ * Lock protecting list of llcds.
+ */
+ spinlock_t lcm_lock;
+ /**
+ * Llcds in flight for debugging purposes.
+ */
+ struct list_head lcm_llcds;
+ /**
+ * Commit thread name buffer. Only used for thread start.
+ */
+ char lcm_name[LCM_NAME_SIZE];
+};
+
+struct llog_canceld_ctxt {
+ /**
+ * Llog context this llcd is attached to. Used for accessing
+ * ->loc_import and others in process of canceling cookies
+ * gathered in this llcd.
+ */
+ struct llog_ctxt *llcd_ctxt;
+ /**
+ * Cancel thread control stucture pointer. Used for accessing
+ * it to see if should stop processing and other needs.
+ */
+ struct llog_commit_master *llcd_lcm;
+ /**
+ * Maximal llcd size. Used in calculations on how much of room
+ * left in llcd to cookie comming cookies.
+ */
+ int llcd_size;
+ /**
+ * Link to lcm llcds list.
+ */
+ struct list_head llcd_list;
+ /**
+ * Current llcd size while gathering cookies. This should not be
+ * more than ->llcd_size. Used for determining if we need to
+ * send this llcd (if full) and allocate new one. This is also
+ * used for copying new cookie at the end of buffer.
+ */
+ int llcd_cookiebytes;
+ /**
+ * Pointer to the start of cookies buffer.
+ */
+ struct llog_cookie llcd_cookies[0];
+};
+
+/* ptlrpc/recov_thread.c */
+extern struct llog_commit_master *llog_recov_thread_init(char *name);
+extern void llog_recov_thread_fini(struct llog_commit_master *lcm,
+ int force);
+extern int llog_recov_thread_start(struct llog_commit_master *lcm);
+extern void llog_recov_thread_stop(struct llog_commit_master *lcm,
+ int force);
+
static inline void llog_gen_init(struct llog_ctxt *ctxt)
{
struct obd_device *obd = ctxt->loc_exp->exp_obd;
return size_round(len);
}
+#define llog_ctxt_get(ctxt) \
+({ \
+ struct llog_ctxt *ctxt_ = ctxt; \
+ LASSERT(atomic_read(&ctxt_->loc_refcount) > 0); \
+ atomic_inc(&ctxt_->loc_refcount); \
+ CDEBUG(D_INFO, "GETting ctxt %p : new refcount %d\n", ctxt_, \
+ atomic_read(&ctxt_->loc_refcount)); \
+ ctxt_; \
+})
+
+#define llog_ctxt_put(ctxt) \
+do { \
+ if ((ctxt) == NULL) \
+ break; \
+ LASSERT(atomic_read(&(ctxt)->loc_refcount) > 0); \
+ LASSERT(atomic_read(&(ctxt)->loc_refcount) < 0x5a5a5a); \
+ CDEBUG(D_INFO, "PUTting ctxt %p : new refcount %d\n", (ctxt), \
+ atomic_read(&(ctxt)->loc_refcount) - 1); \
+ __llog_ctxt_put(ctxt); \
+} while (0)
+
static inline struct llog_ctxt *llog_get_context(struct obd_device *obd,
- int index)
+ int index)
{
- if (index < 0 || index >= LLOG_MAX_CTXTS)
- return NULL;
-
- return obd->obd_llog_ctxt[index];
+ struct llog_ctxt *ctxt;
+
+ if (index < 0 || index >= LLOG_MAX_CTXTS) {
+ CDEBUG(D_INFO, "obd %p bad index %d\n", obd, index);
+ return NULL;
+ }
+
+ spin_lock(&obd->obd_dev_lock);
+ if (obd->obd_llog_ctxt[index] == NULL) {
+ spin_unlock(&obd->obd_dev_lock);
+ CDEBUG(D_INFO,"obd %p and ctxt index %d is NULL \n",obd,index);
+ return NULL;
+ }
+ ctxt = llog_ctxt_get(obd->obd_llog_ctxt[index]);
+ spin_unlock(&obd->obd_dev_lock);
+ return ctxt;
}
-static inline struct llog_ctxt *
-llog_get_context_from_llogs(struct obd_llogs *llogs, int index)
-{
- if (index < 0 || index >= LLOG_MAX_CTXTS)
- return NULL;
- return llogs->llog_ctxt[index];
+static inline int llog_ctxt_null(struct obd_device *obd, int index)
+{
+ return (obd->obd_llog_ctxt[index] == NULL);
}
static inline int llog_write_rec(struct llog_handle *handle,
int numcookies, void *buf, int idx)
{
struct llog_operations *lop;
- int rc, buflen;
+ int raised, rc, buflen;
ENTRY;
rc = llog_handle2ops(handle, &lop);
if (rc)
RETURN(rc);
- LASSERT(lop);
if (lop->lop_write_rec == NULL)
RETURN(-EOPNOTSUPP);
buflen = rec->lrh_len;
LASSERT(size_round(buflen) == buflen);
+ raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
+ if (!raised)
+ cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
rc = lop->lop_write_rec(handle, rec, logcookies, numcookies, buf, idx);
+ if (!raised)
+ cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
RETURN(rc);
}
struct llog_logid *logid, char *name)
{
struct llog_operations *lop;
- int rc;
+ int raised, rc;
ENTRY;
rc = llog_obd2ops(ctxt, &lop);
if (lop->lop_create == NULL)
RETURN(-EOPNOTSUPP);
+ raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
+ if (!raised)
+ cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
rc = lop->lop_create(ctxt, res, logid, name);
+ if (!raised)
+ cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
RETURN(rc);
}
-static inline int llog_connect(struct llog_ctxt *ctxt, int count,
+static inline int llog_connect(struct llog_ctxt *ctxt,
struct llog_logid *logid, struct llog_gen *gen,
struct obd_uuid *uuid)
{
if (lop->lop_connect == NULL)
RETURN(-EOPNOTSUPP);
- rc = lop->lop_connect(ctxt, count, logid, gen, uuid);
+ rc = lop->lop_connect(ctxt, logid, gen, uuid);
RETURN(rc);
}