*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
/* If llog object is remote and creation is failed, lgh_hdr
* might be left over here, free it first */
LASSERT(!llog_exist(loghandle));
- OBD_FREE_PTR(loghandle->lgh_hdr);
+ OBD_FREE_LARGE(loghandle->lgh_hdr, loghandle->lgh_hdr_size);
loghandle->lgh_hdr = NULL;
}
POSTID(&cathandle->lgh_id.lgl_oi));
loghandle->lgh_hdr->llh_cat_idx = rec->lid_hdr.lrh_index;
+
+ /* limit max size of plain llog so that space can be
+ * released sooner, especially on small filesystems */
+ /* 2MB for the cases when free space hasn't been learned yet */
+ loghandle->lgh_max_size = 2 << 20;
+ dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
+ rc = dt_statfs(env, dt, &lgi->lgi_statfs);
+ if (rc == 0 && lgi->lgi_statfs.os_bfree > 0) {
+ __u64 freespace = (lgi->lgi_statfs.os_bfree *
+ lgi->lgi_statfs.os_bsize) >> 6;
+ if (freespace < loghandle->lgh_max_size)
+ loghandle->lgh_max_size = freespace;
+ /* shouldn't be > 128MB in any case?
+ * it's 256K records of 512 bytes each */
+ if (freespace > (128 << 20))
+ loghandle->lgh_max_size = 128 << 20;
+ }
+ rc = 0;
+
out:
- if (handle != NULL)
+ if (handle != NULL) {
+ handle->th_result = rc >= 0 ? 0 : rc;
dt_trans_stop(env, dt, handle);
-
- RETURN(0);
+ }
+ RETURN(rc);
out_destroy:
/* to signal llog_cat_close() it shouldn't try to destroy the llog,
down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
llh = loghandle->lgh_hdr;
LASSERT(llh);
- if (!llog_is_full(loghandle)) {
- up_write(&cathandle->lgh_lock);
- RETURN(loghandle);
- } else {
+ if (!llog_is_full(loghandle))
+ GOTO(out_unlock, loghandle);
+ else
up_write(&loghandle->lgh_lock);
- }
- }
+ }
next:
+ /* Sigh, the chd_next_log and chd_current_log is initialized
+ * in declare phase, and we do not serialize the catlog
+ * accessing, so it might be possible the llog creation
+ * thread (see llog_cat_declare_add_rec()) did not create
+ * llog successfully, then the following thread might
+ * meet this situation. */
+ if (IS_ERR_OR_NULL(cathandle->u.chd.chd_next_log)) {
+ CERROR("%s: next log does not exist!\n",
+ cathandle->lgh_ctxt->loc_obd->obd_name);
+ loghandle = ERR_PTR(-EIO);
+ if (cathandle->u.chd.chd_next_log == NULL) {
+ /* Store the error in chd_next_log, so
+ * the following process can get correct
+ * failure value */
+ cathandle->u.chd.chd_next_log = loghandle;
+ }
+ GOTO(out_unlock, loghandle);
+ }
+
CDEBUG(D_INODE, "use next log\n");
loghandle = cathandle->u.chd.chd_next_log;
cathandle->u.chd.chd_current_log = loghandle;
cathandle->u.chd.chd_next_log = NULL;
down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+
+out_unlock:
up_write(&cathandle->lgh_lock);
LASSERT(loghandle);
RETURN(loghandle);
}
+static int llog_cat_update_header(const struct lu_env *env,
+ struct llog_handle *cathandle)
+{
+ struct llog_handle *loghandle;
+ int rc;
+ ENTRY;
+
+ /* refresh llog */
+ down_write(&cathandle->lgh_lock);
+ if (!cathandle->lgh_stale) {
+ up_write(&cathandle->lgh_lock);
+ RETURN(0);
+ }
+ list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
+ u.phd.phd_entry) {
+ if (!llog_exist(loghandle))
+ continue;
+
+ rc = llog_read_header(env, loghandle, NULL);
+ if (rc != 0) {
+ up_write(&cathandle->lgh_lock);
+ GOTO(out, rc);
+ }
+ }
+ rc = llog_read_header(env, cathandle, NULL);
+ if (rc == 0)
+ cathandle->lgh_stale = 0;
+ up_write(&cathandle->lgh_lock);
+ if (rc != 0)
+ GOTO(out, rc);
+out:
+ RETURN(rc);
+}
+
/* Add a single record to the recovery log(s) using a catalog
* Returns as llog_write_record
*
retry:
loghandle = llog_cat_current_log(cathandle, th);
- LASSERT(!IS_ERR(loghandle));
+ if (IS_ERR(loghandle))
+ RETURN(PTR_ERR(loghandle));
/* loghandle is already locked by llog_cat_current_log() for us */
if (!llog_exist(loghandle)) {
}
}
up_write(&cathandle->lgh_lock);
- } else if (cathandle->u.chd.chd_next_log == NULL) {
+ } else if (cathandle->u.chd.chd_next_log == NULL ||
+ IS_ERR(cathandle->u.chd.chd_next_log)) {
/* declare next plain llog */
down_write(&cathandle->lgh_lock);
- if (cathandle->u.chd.chd_next_log == NULL) {
+ if (cathandle->u.chd.chd_next_log == NULL ||
+ IS_ERR(cathandle->u.chd.chd_next_log)) {
rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
NULL, NULL, LLOG_OPEN_NEW);
if (rc == 0) {
if (!llog_exist(cathandle->u.chd.chd_current_log)) {
if (dt_object_remote(cathandle->lgh_obj)) {
- /* If it is remote cat-llog here, let's create the
- * remote llog object synchronously, so other threads
- * can use it correctly. */
- rc = llog_cat_new_log(env, cathandle,
- cathandle->u.chd.chd_current_log, NULL);
+ /* For remote operation, if we put the llog object
+ * creation in the current transaction, then the
+ * llog object will not be created on the remote
+ * target until the transaction stop, if other
+ * operations start before the transaction stop,
+ * and use the same llog object, will be dependent
+ * on the success of this transaction. So let's
+ * create the llog object synchronously here to
+ * remove the dependency. */
+create_again:
+ down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ loghandle = cathandle->u.chd.chd_current_log;
+ down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ if (cathandle->lgh_stale) {
+ up_write(&loghandle->lgh_lock);
+ up_read(&cathandle->lgh_lock);
+ GOTO(out, rc = -EIO);
+ }
+ if (!llog_exist(loghandle)) {
+ rc = llog_cat_new_log(env, cathandle, loghandle,
+ NULL);
+ if (rc == -ESTALE)
+ cathandle->lgh_stale = 1;
+ }
+ up_write(&loghandle->lgh_lock);
+ up_read(&cathandle->lgh_lock);
+ if (rc == -ESTALE) {
+ rc = llog_cat_update_header(env, cathandle);
+ if (rc != 0)
+ GOTO(out, rc);
+ goto create_again;
+ } else if (rc < 0) {
+ GOTO(out, rc);
+ }
} else {
rc = llog_declare_create(env,
cathandle->u.chd.chd_current_log, th);
&lirec->lid_hdr, -1, th);
}
}
+
+write_again:
/* declare records in the llogs */
rc = llog_declare_write_rec(env, cathandle->u.chd.chd_current_log,
rec, -1, th);
- if (rc)
+ if (rc == -ESTALE) {
+ down_write(&cathandle->lgh_lock);
+ if (cathandle->lgh_stale) {
+ up_write(&cathandle->lgh_lock);
+ GOTO(out, rc = -EIO);
+ }
+
+ cathandle->lgh_stale = 1;
+ up_write(&cathandle->lgh_lock);
+ rc = llog_cat_update_header(env, cathandle);
+ if (rc != 0)
+ GOTO(out, rc);
+ goto write_again;
+ } else if (rc < 0) {
GOTO(out, rc);
+ }
next = cathandle->u.chd.chd_next_log;
- if (next) {
+ if (!IS_ERR_OR_NULL(next)) {
if (!llog_exist(next)) {
if (dt_object_remote(cathandle->lgh_obj)) {
- /* If it is remote cat-llog here, let's create
- * the remote remote llog object synchronously,
- * so other threads can use it correctly. */
- rc = llog_cat_new_log(env, cathandle, next,
- NULL);
+ /* For remote operation, if we put the llog
+ * object creation in the current transaction,
+ * then the llog object will not be created on
+ * the remote target until the transaction stop,
+ * if other operations start before the
+ * transaction stop, and use the same llog
+ * object, will be dependent on the success of
+ * this transaction. So let's create the llog
+ * object synchronously here to remove the
+ * dependency. */
+ down_write_nested(&cathandle->lgh_lock,
+ LLOGH_CAT);
+ next = cathandle->u.chd.chd_next_log;
+ if (IS_ERR_OR_NULL(next)) {
+ /* Sigh, another thread just tried,
+ * let's fail as well */
+ up_write(&cathandle->lgh_lock);
+ if (next == NULL)
+ rc = -EIO;
+ else
+ rc = PTR_ERR(next);
+ GOTO(out, rc);
+ }
+
+ down_write_nested(&next->lgh_lock, LLOGH_LOG);
+ if (!llog_exist(next)) {
+ rc = llog_cat_new_log(env, cathandle,
+ next, NULL);
+ if (rc < 0)
+ cathandle->u.chd.chd_next_log =
+ ERR_PTR(rc);
+ }
+ up_write(&next->lgh_lock);
+ up_write(&cathandle->lgh_lock);
+ if (rc < 0)
+ GOTO(out, rc);
} else {
rc = llog_declare_create(env, next, th);
llog_declare_write_rec(env, cathandle,
}
int llog_cat_process_or_fork(const struct lu_env *env,
- struct llog_handle *cat_llh,
+ struct llog_handle *cat_llh, llog_cb_t cat_cb,
llog_cb_t cb, void *data, int startcat,
int startidx, bool fork)
{
cd.lpcd_first_idx = llh->llh_cat_idx;
cd.lpcd_last_idx = 0;
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
+ rc = llog_process_or_fork(env, cat_llh, cat_cb,
&d, &cd, fork);
if (rc != 0)
RETURN(rc);
cd.lpcd_first_idx = 0;
cd.lpcd_last_idx = cat_llh->lgh_last_idx;
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
+ rc = llog_process_or_fork(env, cat_llh, cat_cb,
&d, &cd, fork);
} else {
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
+ rc = llog_process_or_fork(env, cat_llh, cat_cb,
&d, NULL, fork);
}
int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh,
llog_cb_t cb, void *data, int startcat, int startidx)
{
- return llog_cat_process_or_fork(env, cat_llh, cb, data, startcat,
- startidx, false);
+ return llog_cat_process_or_fork(env, cat_llh, llog_cat_process_cb,
+ cb, data, startcat, startidx, false);
}
EXPORT_SYMBOL(llog_cat_process);
+static int llog_cat_size_cb(const struct lu_env *env,
+ struct llog_handle *cat_llh,
+ struct llog_rec_hdr *rec, void *data)
+{
+ struct llog_process_data *d = data;
+ struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
+ struct llog_handle *llh;
+ int rc;
+ __u64 *cum_size = d->lpd_data;
+ __u64 size;
+
+ ENTRY;
+ if (rec->lrh_type != LLOG_LOGID_MAGIC) {
+ CERROR("%s: invalid record in catalog, rc = %d\n",
+ cat_llh->lgh_ctxt->loc_obd->obd_name, -EINVAL);
+ RETURN(-EINVAL);
+ }
+ CDEBUG(D_HA, "processing log "DOSTID":%x at index %u of catalog "
+ DOSTID"\n", POSTID(&lir->lid_id.lgl_oi), lir->lid_id.lgl_ogen,
+ rec->lrh_index, POSTID(&cat_llh->lgh_id.lgl_oi));
+
+ rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id);
+ if (rc) {
+ CWARN("%s: cannot find handle for llog "DOSTID": rc = %d\n",
+ cat_llh->lgh_ctxt->loc_obd->obd_name,
+ POSTID(&lir->lid_id.lgl_oi), rc);
+ RETURN(0);
+ }
+ size = llog_size(env, llh);
+ *cum_size += size;
+
+ CDEBUG(D_INFO, "Add llog entry "DOSTID" size %llu\n",
+ POSTID(&llh->lgh_id.lgl_oi), size);
+
+ llog_handle_put(llh);
+
+ RETURN(0);
+
+}
+
+__u64 llog_cat_size(const struct lu_env *env, struct llog_handle *cat_llh)
+{
+ __u64 size = llog_size(env, cat_llh);
+
+ llog_cat_process_or_fork(env, cat_llh, llog_cat_size_cb,
+ NULL, &size, 0, 0, false);
+
+ return size;
+}
+EXPORT_SYMBOL(llog_cat_size);
+
static int llog_cat_reverse_process_cb(const struct lu_env *env,
struct llog_handle *cat_llh,
struct llog_rec_hdr *rec, void *data)
index, POSTID(&cathandle->lgh_id.lgl_oi));
return rc;
}
-
-/* helper to initialize catalog llog and process it to cancel */
-int llog_cat_init_and_process(const struct lu_env *env,
- struct llog_handle *llh)
-{
- int rc;
-
- rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, NULL);
- if (rc)
- RETURN(rc);
-
- RETURN(0);
-}
-EXPORT_SYMBOL(llog_cat_init_and_process);