* Copyright (C) 2003 Cluster File Systems, Inc.
* Author: Andreas Dilger <adilger@clusterfs.com>
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of Cluster File Systems, Inc.
*
- * 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.
+ * You may have signed or agreed to another license before downloading
+ * this software. If so, you are bound by the terms and conditions
+ * of that agreement, and the following does not apply to you. See the
+ * LICENSE file included with this distribution for more information.
*
- * 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.
+ * If you did not agree to a different license, then this copy of Lustre
+ * is open source 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.
*
- * 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.
+ * In either case, 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
+ * license text for more details.
*
* OST<->MDS recovery logging thread.
*
# define EXPORT_SYMTAB
#endif
-#ifndef __KERNEL__
-# include <portals/list.h>
+#ifdef __KERNEL__
+# include <libcfs/libcfs.h>
+#else
+# include <libcfs/list.h>
# include <liblustre.h>
#endif
-#include <linux/kp30.h>
-#include <linux/fs.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_commit_confd.h>
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_net.h>
-#include <portals/types.h>
-#include <portals/list.h>
+
+#include <libcfs/kp30.h>
+#include <obd_class.h>
+#include <lustre_commit_confd.h>
+#include <obd_support.h>
+#include <obd_class.h>
+#include <lustre_net.h>
+#include <lnet/types.h>
+#include <libcfs/list.h>
+#include <lustre_log.h>
#include "ptlrpc_internal.h"
+#ifdef __KERNEL__
+
static struct llog_commit_master lustre_lcm;
static struct llog_commit_master *lcm = &lustre_lcm;
-/* Allocate new commit structs in case we do not have enough */
+/* Allocate new commit structs in case we do not have enough.
+ * Make the llcd size small enough that it fits into a single page when we
+ * are sending/receiving it. */
static int llcd_alloc(void)
{
- struct llog_commit_data *llcd;
+ struct llog_canceld_ctxt *llcd;
+ int llcd_size;
- OBD_ALLOC(llcd, PAGE_SIZE);
+ /* payload of lustre_msg V2 is bigger */
+ llcd_size = 4096 - lustre_msg_size(LUSTRE_MSG_MAGIC_V2, 1, NULL);
+ OBD_ALLOC(llcd,
+ llcd_size + offsetof(struct llog_canceld_ctxt, llcd_cookies));
if (llcd == NULL)
return -ENOMEM;
+ llcd->llcd_size = llcd_size;
llcd->llcd_lcm = lcm;
spin_lock(&lcm->lcm_llcd_lock);
}
/* Get a free cookie struct from the list */
-struct llog_commit_data *llcd_grab(void)
+struct llog_canceld_ctxt *llcd_grab(void)
{
- struct llog_commit_data *llcd;
+ struct llog_canceld_ctxt *llcd;
+repeat:
spin_lock(&lcm->lcm_llcd_lock);
if (list_empty(&lcm->lcm_llcd_free)) {
spin_unlock(&lcm->lcm_llcd_lock);
CERROR("unable to allocate log commit data!\n");
return NULL;
}
- spin_lock(&lcm->lcm_llcd_lock);
+ /* check new llcd wasn't grabbed while lock dropped, b=7407 */
+ goto repeat;
}
llcd = list_entry(lcm->lcm_llcd_free.next, typeof(*llcd), llcd_list);
atomic_dec(&lcm->lcm_llcd_numfree);
spin_unlock(&lcm->lcm_llcd_lock);
- llcd->llcd_tries = 0;
llcd->llcd_cookiebytes = 0;
return llcd;
}
EXPORT_SYMBOL(llcd_grab);
-static void llcd_put(struct llog_commit_data *llcd)
+static void llcd_put(struct llog_canceld_ctxt *llcd)
{
if (atomic_read(&lcm->lcm_llcd_numfree) >= lcm->lcm_llcd_maxfree) {
- OBD_FREE(llcd, PAGE_SIZE);
+ int llcd_size = llcd->llcd_size +
+ offsetof(struct llog_canceld_ctxt, llcd_cookies);
+ OBD_FREE(llcd, llcd_size);
} else {
spin_lock(&lcm->lcm_llcd_lock);
list_add(&llcd->llcd_list, &lcm->lcm_llcd_free);
}
/* Send some cookies to the appropriate target */
-void llcd_send(struct llog_commit_data *llcd)
+void llcd_send(struct llog_canceld_ctxt *llcd)
{
spin_lock(&llcd->llcd_lcm->lcm_llcd_lock);
list_add_tail(&llcd->llcd_list, &llcd->llcd_lcm->lcm_llcd_pending);
spin_unlock(&llcd->llcd_lcm->lcm_llcd_lock);
- wake_up_nr(&llcd->llcd_lcm->lcm_waitq, 1);
+ cfs_waitq_signal_nr(&llcd->llcd_lcm->lcm_waitq, 1);
}
EXPORT_SYMBOL(llcd_send);
+/* deleted objects have a commit callback that cancels the MDS
+ * log record for the deletion. The commit callback calls this
+ * function
+ */
+int llog_obd_repl_cancel(struct llog_ctxt *ctxt,
+ struct lov_stripe_md *lsm, int count,
+ struct llog_cookie *cookies, int flags)
+{
+ struct llog_canceld_ctxt *llcd;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(ctxt);
+
+ mutex_down(&ctxt->loc_sem);
+ if (ctxt->loc_imp == NULL) {
+ CDEBUG(D_HA, "no import for ctxt %p\n", ctxt);
+ GOTO(out, rc = 0);
+ }
+
+ llcd = ctxt->loc_llcd;
+
+ if (count > 0 && cookies != NULL) {
+ if (llcd == NULL) {
+ llcd = llcd_grab();
+ if (llcd == NULL) {
+ CERROR("couldn't get an llcd - dropped "LPX64
+ ":%x+%u\n",
+ cookies->lgc_lgl.lgl_oid,
+ cookies->lgc_lgl.lgl_ogen,
+ cookies->lgc_index);
+ GOTO(out, rc = -ENOMEM);
+ }
+ llcd->llcd_ctxt = ctxt;
+ ctxt->loc_llcd = llcd;
+ }
+
+ memcpy((char *)llcd->llcd_cookies + llcd->llcd_cookiebytes,
+ cookies, sizeof(*cookies));
+ llcd->llcd_cookiebytes += sizeof(*cookies);
+ } else {
+ if (llcd == NULL || !(flags & OBD_LLOG_FL_SENDNOW))
+ GOTO(out, rc);
+ }
+
+ if ((llcd->llcd_size - llcd->llcd_cookiebytes) < sizeof(*cookies) ||
+ (flags & OBD_LLOG_FL_SENDNOW)) {
+ CDEBUG(D_HA, "send llcd %p:%p\n", llcd, llcd->llcd_ctxt);
+ ctxt->loc_llcd = NULL;
+ llcd_send(llcd);
+ }
+out:
+ mutex_up(&ctxt->loc_sem);
+ return rc;
+}
+EXPORT_SYMBOL(llog_obd_repl_cancel);
+
+int llog_obd_repl_sync(struct llog_ctxt *ctxt, struct obd_export *exp)
+{
+ int rc = 0;
+ ENTRY;
+
+ if (exp && (ctxt->loc_imp == exp->exp_imp_reverse)) {
+ CDEBUG(D_HA, "reverse import disconnected, put llcd %p:%p\n",
+ ctxt->loc_llcd, ctxt);
+ mutex_down(&ctxt->loc_sem);
+ if (ctxt->loc_llcd != NULL) {
+ llcd_put(ctxt->loc_llcd);
+ ctxt->loc_llcd = NULL;
+ }
+ ctxt->loc_imp = NULL;
+ mutex_up(&ctxt->loc_sem);
+ } else {
+ rc = llog_cancel(ctxt, NULL, 0, NULL, OBD_LLOG_FL_SENDNOW);
+ }
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_obd_repl_sync);
+
static int log_commit_thread(void *arg)
{
struct llog_commit_master *lcm = arg;
struct llog_commit_daemon *lcd;
- struct llog_commit_data *llcd, *n;
- unsigned long flags;
+ struct llog_canceld_ctxt *llcd, *n;
+ struct obd_import *import = NULL;
ENTRY;
OBD_ALLOC(lcd, sizeof(*lcd));
if (lcd == NULL)
RETURN(-ENOMEM);
- lock_kernel();
- ptlrpc_daemonize(); /* thread never needs to do IO */
-
- SIGNAL_MASK_LOCK(current, flags);
- sigfillset(¤t->blocked);
- RECALC_SIGPENDING;
- SIGNAL_MASK_UNLOCK(current, flags);
-
spin_lock(&lcm->lcm_thread_lock);
- THREAD_NAME(current->comm, "ll_log_commit_%d",
- atomic_read(&lcm->lcm_thread_total));
+ THREAD_NAME(cfs_curproc_comm(), CFS_CURPROC_COMM_MAX - 1,
+ "ll_log_comt_%02d", atomic_read(&lcm->lcm_thread_total));
atomic_inc(&lcm->lcm_thread_total);
spin_unlock(&lcm->lcm_thread_lock);
- unlock_kernel();
- INIT_LIST_HEAD(&lcd->lcd_lcm_list);
- INIT_LIST_HEAD(&lcd->lcd_llcd_list);
+ ptlrpc_daemonize(cfs_curproc_comm()); /* thread never needs to do IO */
+
+ CFS_INIT_LIST_HEAD(&lcd->lcd_lcm_list);
+ CFS_INIT_LIST_HEAD(&lcd->lcd_llcd_list);
lcd->lcd_lcm = lcm;
- CDEBUG(D_HA, "%s started\n", current->comm);
+ CDEBUG(D_HA, "%s started\n", cfs_curproc_comm());
do {
struct ptlrpc_request *request;
- struct obd_import *import = NULL;
struct list_head *sending_list;
int rc = 0;
+ if (import)
+ class_import_put(import);
+ import = NULL;
+
/* If we do not have enough pages available, allocate some */
while (atomic_read(&lcm->lcm_llcd_numfree) <
lcm->lcm_llcd_minfree) {
sending_list = &lcm->lcm_llcd_pending;
resend:
+ if (import)
+ class_import_put(import);
+ import = NULL;
if (lcm->lcm_flags & LLOG_LCM_FL_EXIT) {
lcm->lcm_llcd_maxfree = 0;
lcm->lcm_llcd_minfree = 0;
llcd = list_entry(lcd->lcd_llcd_list.next,
typeof(*llcd), llcd_list);
LASSERT(llcd->llcd_lcm == lcm);
- import = llcd->llcd_import;
+ import = llcd->llcd_ctxt->loc_imp;
+ if (import)
+ class_import_get(import);
}
list_for_each_entry_safe(llcd, n, sending_list, llcd_list) {
LASSERT(llcd->llcd_lcm == lcm);
- if (import == llcd->llcd_import)
+ if (import == llcd->llcd_ctxt->loc_imp)
list_move_tail(&llcd->llcd_list,
&lcd->lcd_llcd_list);
}
list_for_each_entry_safe(llcd, n, &lcm->lcm_llcd_resend,
llcd_list) {
LASSERT(llcd->llcd_lcm == lcm);
- if (import == llcd->llcd_import)
+ if (import == llcd->llcd_ctxt->loc_imp)
list_move_tail(&llcd->llcd_list,
&lcd->lcd_llcd_list);
}
/* We are the only one manipulating our local list - no lock */
list_for_each_entry_safe(llcd,n, &lcd->lcd_llcd_list,llcd_list){
- char *bufs[1] = {(char *)llcd->llcd_cookies};
+ int size[2] = { sizeof(struct ptlrpc_body),
+ llcd->llcd_cookiebytes };
+ char *bufs[2] = { NULL, (char *)llcd->llcd_cookies };
+
list_del(&llcd->llcd_list);
+ if (llcd->llcd_cookiebytes == 0) {
+ CDEBUG(D_HA, "put empty llcd %p:%p\n",
+ llcd, llcd->llcd_ctxt);
+ llcd_put(llcd);
+ continue;
+ }
- request = ptlrpc_prep_req(import, OBD_LOG_CANCEL, 1,
- &llcd->llcd_cookiebytes,
- bufs);
+ mutex_down(&llcd->llcd_ctxt->loc_sem);
+ if (llcd->llcd_ctxt->loc_imp == NULL) {
+ mutex_up(&llcd->llcd_ctxt->loc_sem);
+ CWARN("import will be destroyed, put "
+ "llcd %p:%p\n", llcd, llcd->llcd_ctxt);
+ llcd_put(llcd);
+ continue;
+ }
+ mutex_up(&llcd->llcd_ctxt->loc_sem);
+
+ if (!import || (import == LP_POISON) ||
+ (import->imp_client == LP_POISON)) {
+ CERROR("No import %p (llcd=%p, ctxt=%p)\n",
+ import, llcd, llcd->llcd_ctxt);
+ llcd_put(llcd);
+ continue;
+ }
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_DELAY_RECOV, 10);
+
+ request = ptlrpc_prep_req(import, LUSTRE_LOG_VERSION,
+ OBD_LOG_CANCEL, 2, size,bufs);
if (request == NULL) {
rc = -ENOMEM;
CERROR("error preparing commit: rc %d\n", rc);
spin_lock(&lcm->lcm_llcd_lock);
list_splice(&lcd->lcd_llcd_list,
&lcm->lcm_llcd_resend);
- INIT_LIST_HEAD(&lcd->lcd_llcd_list);
+ CFS_INIT_LIST_HEAD(&lcd->lcd_llcd_list);
spin_unlock(&lcm->lcm_llcd_lock);
break;
}
- request->rq_replen = lustre_msg_size(0, NULL);
+ /* XXX FIXME bug 249, 5515 */
+ request->rq_request_portal = LDLM_CANCEL_REQUEST_PORTAL;
+ request->rq_reply_portal = LDLM_CANCEL_REPLY_PORTAL;
+
+ ptlrpc_req_set_repsize(request, 1, NULL);
+ mutex_down(&llcd->llcd_ctxt->loc_sem);
+ if (llcd->llcd_ctxt->loc_imp == NULL) {
+ mutex_up(&llcd->llcd_ctxt->loc_sem);
+ CWARN("import will be destroyed, put "
+ "llcd %p:%p\n", llcd, llcd->llcd_ctxt);
+ llcd_put(llcd);
+ ptlrpc_req_finished(request);
+ continue;
+ }
+ mutex_up(&llcd->llcd_ctxt->loc_sem);
rc = ptlrpc_queue_wait(request);
ptlrpc_req_finished(request);
continue;
}
- spin_lock(&lcm->lcm_llcd_lock);
- list_splice(&lcd->lcd_llcd_list, &lcm->lcm_llcd_resend);
- if (++llcd->llcd_tries < 5) {
- CERROR("commit %p failed %dx: rc %d\n",
- llcd, llcd->llcd_tries, rc);
-
- list_add_tail(&llcd->llcd_list,
- &lcm->lcm_llcd_resend);
- spin_unlock(&lcm->lcm_llcd_lock);
- } else {
- spin_unlock(&lcm->lcm_llcd_lock);
- CERROR("commit %p dropped %d cookies: rc %d\n",
- llcd, (int)(llcd->llcd_cookiebytes /
- sizeof(*llcd->llcd_cookies)),
- rc);
- llcd_put(llcd);
- }
- break;
+ CERROR("commit %p:%p drop %d cookies: rc %d\n",
+ llcd, llcd->llcd_ctxt,
+ (int)(llcd->llcd_cookiebytes /
+ sizeof(*llcd->llcd_cookies)), rc);
+ llcd_put(llcd);
}
if (rc == 0) {
}
} while(1);
+ if (import)
+ class_import_put(import);
+
/* If we are force exiting, just drop all of the cookies. */
if (lcm->lcm_flags & LLOG_LCM_FL_EXIT_FORCE) {
spin_lock(&lcm->lcm_llcd_lock);
llcd_put(llcd);
}
+ spin_lock(&lcm->lcm_thread_lock);
+ list_del(&lcd->lcd_lcm_list);
+ spin_unlock(&lcm->lcm_thread_lock);
OBD_FREE(lcd, sizeof(*lcd));
+ CDEBUG(D_HA, "%s exiting\n", cfs_curproc_comm());
+
spin_lock(&lcm->lcm_thread_lock);
atomic_dec(&lcm->lcm_thread_total);
spin_unlock(&lcm->lcm_thread_lock);
- wake_up(&lcm->lcm_waitq);
+ cfs_waitq_signal(&lcm->lcm_waitq);
- CDEBUG(D_HA, "%s exiting\n", current->comm);
return 0;
}
if (atomic_read(&lcm->lcm_thread_total) >= lcm->lcm_thread_max)
RETURN(0);
- rc = kernel_thread(log_commit_thread, lcm, CLONE_VM | CLONE_FILES);
+ rc = cfs_kernel_thread(log_commit_thread, lcm, CLONE_VM | CLONE_FILES);
if (rc < 0) {
CERROR("error starting thread #%d: %d\n",
atomic_read(&lcm->lcm_thread_total), rc);
}
EXPORT_SYMBOL(llog_start_commit_thread);
+static struct llog_process_args {
+ struct semaphore llpa_sem;
+ struct llog_ctxt *llpa_ctxt;
+ void *llpa_cb;
+ void *llpa_arg;
+} llpa;
+
int llog_init_commit_master(void)
{
- INIT_LIST_HEAD(&lcm->lcm_thread_busy);
- INIT_LIST_HEAD(&lcm->lcm_thread_idle);
+ CFS_INIT_LIST_HEAD(&lcm->lcm_thread_busy);
+ CFS_INIT_LIST_HEAD(&lcm->lcm_thread_idle);
spin_lock_init(&lcm->lcm_thread_lock);
atomic_set(&lcm->lcm_thread_numidle, 0);
- init_waitqueue_head(&lcm->lcm_waitq);
- INIT_LIST_HEAD(&lcm->lcm_llcd_pending);
- INIT_LIST_HEAD(&lcm->lcm_llcd_resend);
- INIT_LIST_HEAD(&lcm->lcm_llcd_free);
+ cfs_waitq_init(&lcm->lcm_waitq);
+ CFS_INIT_LIST_HEAD(&lcm->lcm_llcd_pending);
+ CFS_INIT_LIST_HEAD(&lcm->lcm_llcd_resend);
+ CFS_INIT_LIST_HEAD(&lcm->lcm_llcd_free);
spin_lock_init(&lcm->lcm_llcd_lock);
atomic_set(&lcm->lcm_llcd_numfree, 0);
lcm->lcm_llcd_minfree = 0;
lcm->lcm_thread_max = 5;
+ /* FIXME initialize semaphore for llog_process_args */
+ sema_init(&llpa.llpa_sem, 1);
return 0;
}
lcm->lcm_flags |= LLOG_LCM_FL_EXIT;
if (force)
lcm->lcm_flags |= LLOG_LCM_FL_EXIT_FORCE;
- wake_up(&lcm->lcm_waitq);
+ cfs_waitq_signal(&lcm->lcm_waitq);
wait_event_interruptible(lcm->lcm_waitq,
atomic_read(&lcm->lcm_thread_total) == 0);
return 0;
}
+
+static int log_process_thread(void *args)
+{
+ struct llog_process_args *data = args;
+ struct llog_ctxt *ctxt = data->llpa_ctxt;
+ void *cb = data->llpa_cb;
+ struct llog_logid logid = *(struct llog_logid *)(data->llpa_arg);
+ struct llog_handle *llh = NULL;
+ int rc;
+ ENTRY;
+
+ mutex_up(&data->llpa_sem);
+ ptlrpc_daemonize("llog_process"); /* thread does IO to log files */
+
+ rc = llog_create(ctxt, &llh, &logid, NULL);
+ if (rc) {
+ CERROR("llog_create failed %d\n", rc);
+ RETURN(rc);
+ }
+ rc = llog_init_handle(llh, LLOG_F_IS_CAT, NULL);
+ if (rc) {
+ CERROR("llog_init_handle failed %d\n", rc);
+ GOTO(out, rc);
+ }
+
+ if (cb) {
+ rc = llog_cat_process(llh, (llog_cb_t)cb, NULL);
+ if (rc != LLOG_PROC_BREAK)
+ CERROR("llog_cat_process failed %d\n", rc);
+ } else {
+ CWARN("no callback function for recovery\n");
+ }
+
+ CDEBUG(D_HA, "send llcd %p:%p forcibly after recovery\n",
+ ctxt->loc_llcd, ctxt);
+ llog_sync(ctxt, NULL);
+out:
+ rc = llog_cat_put(llh);
+ if (rc)
+ CERROR("llog_cat_put failed %d\n", rc);
+
+ RETURN(rc);
+}
+
+static int llog_recovery_generic(struct llog_ctxt *ctxt, void *handle,void *arg)
+{
+ int rc;
+ ENTRY;
+
+ mutex_down(&llpa.llpa_sem);
+ llpa.llpa_ctxt = ctxt;
+ llpa.llpa_cb = handle;
+ llpa.llpa_arg = arg;
+
+ rc = cfs_kernel_thread(log_process_thread, &llpa, CLONE_VM | CLONE_FILES);
+ if (rc < 0)
+ CERROR("error starting log_process_thread: %d\n", rc);
+ else {
+ CDEBUG(D_HA, "log_process_thread: %d\n", rc);
+ rc = 0;
+ }
+
+ RETURN(rc);
+}
+
+int llog_repl_connect(struct llog_ctxt *ctxt, int count,
+ struct llog_logid *logid, struct llog_gen *gen,
+ struct obd_uuid *uuid)
+{
+ struct llog_canceld_ctxt *llcd;
+ int rc;
+ ENTRY;
+
+ /* send back llcd before recovery from llog */
+ if (ctxt->loc_llcd != NULL) {
+ CWARN("llcd %p:%p not empty\n", ctxt->loc_llcd, ctxt);
+ llog_sync(ctxt, NULL);
+ }
+
+ mutex_down(&ctxt->loc_sem);
+ ctxt->loc_gen = *gen;
+ llcd = llcd_grab();
+ if (llcd == NULL) {
+ CERROR("couldn't get an llcd\n");
+ mutex_up(&ctxt->loc_sem);
+ RETURN(-ENOMEM);
+ }
+ llcd->llcd_ctxt = ctxt;
+ ctxt->loc_llcd = llcd;
+ mutex_up(&ctxt->loc_sem);
+
+ rc = llog_recovery_generic(ctxt, ctxt->llog_proc_cb, logid);
+ if (rc != 0)
+ CERROR("error recovery process: %d\n", rc);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_repl_connect);
+
+#else /* !__KERNEL__ */
+
+int llog_obd_repl_cancel(struct llog_ctxt *ctxt,
+ struct lov_stripe_md *lsm, int count,
+ struct llog_cookie *cookies, int flags)
+{
+ return 0;
+}
+#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff