/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* if an OST or MDS fails it need only look at log(s) relevant to itself
*
* Author: Andreas Dilger <adilger@clusterfs.com>
+ * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
+ * Author: Mikhail Pershin <mike.pershin@intel.com>
*/
#define DEBUG_SUBSYSTEM S_LOG
*
* Assumes caller has already pushed us into the kernel context and is locking.
*/
-static struct llog_handle *llog_cat_new_log(const struct lu_env *env,
- struct llog_handle *cathandle)
+static int llog_cat_new_log(const struct lu_env *env,
+ struct llog_handle *cathandle,
+ struct llog_handle *loghandle,
+ struct thandle *th)
{
- struct llog_handle *loghandle;
+
struct llog_log_hdr *llh;
struct llog_logid_rec rec = { { 0 }, };
int rc, index, bitmap_size;
/* maximum number of available slots in catlog is bitmap_size - 2 */
if (llh->llh_cat_idx == index) {
CERROR("no free catalog slots for log...\n");
- RETURN(ERR_PTR(-ENOSPC));
- }
+ RETURN(-ENOSPC);
+ }
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
- RETURN(ERR_PTR(-ENOSPC));
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
+ RETURN(-ENOSPC);
- rc = llog_open_create(env, cathandle->lgh_ctxt, &loghandle, NULL,
- NULL);
- if (rc)
- RETURN(ERR_PTR(rc));
+ rc = llog_create(env, loghandle, th);
+ /* if llog is already created, no need to initialize it */
+ if (rc == -EEXIST) {
+ RETURN(0);
+ } else if (rc != 0) {
+ CERROR("%s: can't create new plain llog in catalog: rc = %d\n",
+ loghandle->lgh_ctxt->loc_obd->obd_name, rc);
+ RETURN(rc);
+ }
rc = llog_init_handle(env, loghandle,
LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY,
/* update the catalog: header and record */
rc = llog_write_rec(env, cathandle, &rec.lid_hdr,
- &loghandle->u.phd.phd_cookie, 1, NULL, index);
- if (rc < 0) {
- GOTO(out_destroy, rc);
- }
-
- loghandle->lgh_hdr->llh_cat_idx = index;
- cathandle->u.chd.chd_current_log = loghandle;
- LASSERT(cfs_list_empty(&loghandle->u.phd.phd_entry));
- cfs_list_add_tail(&loghandle->u.phd.phd_entry,
- &cathandle->u.chd.chd_head);
-
-out_destroy:
+ &loghandle->u.phd.phd_cookie, 1, NULL, index, th);
if (rc < 0)
- llog_destroy(env, loghandle);
+ GOTO(out_destroy, rc);
- RETURN(loghandle);
+ loghandle->lgh_hdr->llh_cat_idx = index;
+ RETURN(0);
+out_destroy:
+ llog_destroy(env, loghandle);
+ RETURN(rc);
}
/* Open an existent log handle and add it to the open list.
if (cathandle == NULL)
RETURN(-EBADF);
+ cfs_down_write(&cathandle->lgh_lock);
cfs_list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
u.phd.phd_entry) {
struct llog_logid *cgl = &loghandle->lgh_id;
continue;
}
loghandle->u.phd.phd_cat_handle = cathandle;
+ cfs_up_write(&cathandle->lgh_lock);
GOTO(out, rc = 0);
}
}
+ cfs_up_write(&cathandle->lgh_lock);
rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, logid, NULL,
LLOG_OPEN_EXISTS);
GOTO(out, rc);
}
+ cfs_down_write(&cathandle->lgh_lock);
cfs_list_add(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
+ cfs_up_write(&cathandle->lgh_lock);
loghandle->u.phd.phd_cat_handle = cathandle;
loghandle->u.phd.phd_cookie.lgc_lgl = cathandle->lgh_id;
- loghandle->u.phd.phd_cookie.lgc_index = loghandle->lgh_hdr->llh_cat_idx;
+ loghandle->u.phd.phd_cookie.lgc_index =
+ loghandle->lgh_hdr->llh_cat_idx;
EXIT;
out:
*res = loghandle;
*
* NOTE: loghandle is write-locked upon successful return
*/
-static struct llog_handle *llog_cat_current_log(const struct lu_env *env,
- struct llog_handle *cathandle,
- int create)
+static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle,
+ struct thandle *th)
{
struct llog_handle *loghandle = NULL;
ENTRY;
cfs_down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
loghandle = cathandle->u.chd.chd_current_log;
if (loghandle) {
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
+ struct llog_log_hdr *llh;
- cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
+ cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ llh = loghandle->lgh_hdr;
+ if (llh == NULL ||
+ loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
cfs_up_read(&cathandle->lgh_lock);
RETURN(loghandle);
} else {
cfs_up_write(&loghandle->lgh_lock);
}
}
- if (!create) {
- if (loghandle)
- cfs_down_write(&loghandle->lgh_lock);
- cfs_up_read(&cathandle->lgh_lock);
- RETURN(loghandle);
- }
cfs_up_read(&cathandle->lgh_lock);
- /* time to create new log */
+ /* time to use next log */
- /* first, we have to make sure the state hasn't changed */
- cfs_down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
- loghandle = cathandle->u.chd.chd_current_log;
- if (loghandle) {
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
+ /* first, we have to make sure the state hasn't changed */
+ cfs_down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ loghandle = cathandle->u.chd.chd_current_log;
+ if (loghandle) {
+ struct llog_log_hdr *llh;
- cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ llh = loghandle->lgh_hdr;
+ LASSERT(llh);
if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
cfs_up_write(&cathandle->lgh_lock);
RETURN(loghandle);
}
}
- CDEBUG(D_INODE, "creating new log\n");
- loghandle = llog_cat_new_log(env, cathandle);
- if (!IS_ERR(loghandle))
- cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- cfs_up_write(&cathandle->lgh_lock);
- RETURN(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;
+ cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ cfs_up_write(&cathandle->lgh_lock);
+ LASSERT(loghandle);
+ RETURN(loghandle);
}
/* Add a single record to the recovery log(s) using a catalog
*/
int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle,
struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
- void *buf)
+ void *buf, struct thandle *th)
{
struct llog_handle *loghandle;
int rc;
ENTRY;
LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE);
- loghandle = llog_cat_current_log(env, cathandle, 1);
- if (IS_ERR(loghandle))
- RETURN(PTR_ERR(loghandle));
+ loghandle = llog_cat_current_log(cathandle, th);
+ LASSERT(!IS_ERR(loghandle));
+
/* loghandle is already locked by llog_cat_current_log() for us */
- rc = llog_write_rec(env, loghandle, rec, reccookie, 1, buf, -1);
+ if (!llog_exist(loghandle)) {
+ rc = llog_cat_new_log(env, cathandle, loghandle, th);
+ if (rc < 0) {
+ cfs_up_write(&loghandle->lgh_lock);
+ RETURN(rc);
+ }
+ }
+ /* now let's try to add the record */
+ rc = llog_write_rec(env, loghandle, rec, reccookie, 1, buf, -1, th);
if (rc < 0)
CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle);
cfs_up_write(&loghandle->lgh_lock);
if (rc == -ENOSPC) {
- /* to create a new plain log */
- loghandle = llog_cat_current_log(env, cathandle, 1);
- if (IS_ERR(loghandle))
- RETURN(PTR_ERR(loghandle));
+ /* try to use next log */
+ loghandle = llog_cat_current_log(cathandle, th);
+ LASSERT(!IS_ERR(loghandle));
+ /* new llog can be created concurrently */
+ if (!llog_exist(loghandle)) {
+ rc = llog_cat_new_log(env, cathandle, loghandle, th);
+ if (rc < 0) {
+ cfs_up_write(&loghandle->lgh_lock);
+ RETURN(rc);
+ }
+ }
+ /* now let's try to add the record */
rc = llog_write_rec(env, loghandle, rec, reccookie, 1, buf,
- -1);
- cfs_up_write(&loghandle->lgh_lock);
- }
+ -1, th);
+ if (rc < 0)
+ CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle);
+ cfs_up_write(&loghandle->lgh_lock);
+ }
- RETURN(rc);
+ RETURN(rc);
}
EXPORT_SYMBOL(llog_cat_add_rec);
+int llog_cat_declare_add_rec(const struct lu_env *env,
+ struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct thandle *th)
+{
+ struct llog_handle *loghandle, *next;
+ int rc = 0;
+
+ ENTRY;
+
+ if (cathandle->u.chd.chd_current_log == NULL) {
+ /* declare new plain llog */
+ cfs_down_write(&cathandle->lgh_lock);
+ if (cathandle->u.chd.chd_current_log == NULL) {
+ rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
+ NULL, NULL, LLOG_OPEN_NEW);
+ if (rc == 0) {
+ cathandle->u.chd.chd_current_log = loghandle;
+ cfs_list_add_tail(&loghandle->u.phd.phd_entry,
+ &cathandle->u.chd.chd_head);
+ }
+ }
+ cfs_up_write(&cathandle->lgh_lock);
+ } else if (cathandle->u.chd.chd_next_log == NULL) {
+ /* declare next plain llog */
+ cfs_down_write(&cathandle->lgh_lock);
+ if (cathandle->u.chd.chd_next_log == NULL) {
+ rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
+ NULL, NULL, LLOG_OPEN_NEW);
+ if (rc == 0) {
+ cathandle->u.chd.chd_next_log = loghandle;
+ cfs_list_add_tail(&loghandle->u.phd.phd_entry,
+ &cathandle->u.chd.chd_head);
+ }
+ }
+ cfs_up_write(&cathandle->lgh_lock);
+ }
+ if (rc)
+ GOTO(out, rc);
+
+ if (!llog_exist(cathandle->u.chd.chd_current_log)) {
+ rc = llog_declare_create(env, cathandle->u.chd.chd_current_log,
+ th);
+ if (rc)
+ GOTO(out, rc);
+ llog_declare_write_rec(env, cathandle, NULL, -1, th);
+ }
+ /* declare records in the llogs */
+ rc = llog_declare_write_rec(env, cathandle->u.chd.chd_current_log,
+ rec, -1, th);
+ if (rc)
+ GOTO(out, rc);
+
+ next = cathandle->u.chd.chd_next_log;
+ if (next) {
+ if (!llog_exist(next)) {
+ rc = llog_declare_create(env, next, th);
+ llog_declare_write_rec(env, cathandle, NULL, -1, th);
+ }
+ llog_declare_write_rec(env, next, rec, -1, th);
+ }
+out:
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_cat_declare_add_rec);
+
+int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
+ void *buf)
+{
+ struct llog_ctxt *ctxt;
+ struct dt_device *dt;
+ struct thandle *th = NULL;
+ int rc;
+
+ ctxt = cathandle->lgh_ctxt;
+ LASSERT(ctxt);
+ LASSERT(ctxt->loc_exp);
+
+ if (cathandle->lgh_obj != NULL) {
+ dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt;
+ LASSERT(dt);
+
+ th = dt_trans_create(env, dt);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+
+ rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
+ if (rc)
+ GOTO(out_trans, rc);
+
+ rc = dt_trans_start_local(env, dt, th);
+ if (rc)
+ GOTO(out_trans, rc);
+ rc = llog_cat_add_rec(env, cathandle, rec, reccookie, buf, th);
+out_trans:
+ dt_trans_stop(env, dt, th);
+ } else { /* lvfs compat code */
+ LASSERT(cathandle->lgh_file != NULL);
+ rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
+ if (rc == 0)
+ rc = llog_cat_add_rec(env, cathandle, rec, reccookie,
+ buf, th);
+ }
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_cat_add);
+
/* For each cookie in the cookie array, we clear the log in-use bit and either:
* - the log is empty, so mark it free in the catalog header and delete it
* - the log is not empty, just write out the log header
struct llog_handle *cathandle, int count,
struct llog_cookie *cookies)
{
- int i, index, rc = 0;
+ int i, index, rc = 0, failed = 0;
ENTRY;
- cfs_down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
for (i = 0; i < count; i++, cookies++) {
struct llog_handle *loghandle;
struct llog_logid *lgl = &cookies->lgc_lgl;
+ int lrc;
rc = llog_cat_id2handle(env, cathandle, &loghandle, lgl);
if (rc) {
break;
}
- cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- rc = llog_cancel_rec(env, loghandle, cookies->lgc_index);
- cfs_up_write(&loghandle->lgh_lock);
-
- if (rc == 1) { /* log has been destroyed */
+ lrc = llog_cancel_rec(env, loghandle, cookies->lgc_index);
+ if (lrc == 1) { /* log has been destroyed */
index = loghandle->u.phd.phd_cookie.lgc_index;
+ cfs_down_write(&cathandle->lgh_lock);
if (cathandle->u.chd.chd_current_log == loghandle)
cathandle->u.chd.chd_current_log = NULL;
+ cfs_up_write(&cathandle->lgh_lock);
llog_close(env, loghandle);
LASSERT(index);
llog_cat_set_first_idx(cathandle, index);
- rc = llog_cancel_rec(env, cathandle, index);
- if (rc == 0)
- CDEBUG(D_RPCTRACE,"cancel plain log at index %u"
- " of catalog "LPX64"\n",
- index, cathandle->lgh_id.lgl_oid);
- }
- }
- cfs_up_write(&cathandle->lgh_lock);
+ lrc = llog_cancel_rec(env, cathandle, index);
+ if (lrc == 0)
+ CDEBUG(D_RPCTRACE, "cancel plain log at index"
+ " %u of catalog "LPX64"\n",
+ index, cathandle->lgh_id.lgl_oid);
+ } else if (lrc == -ENOENT) {
+ if (rc == 0) /* ENOENT shouldn't rewrite any error */
+ rc = lrc;
+ } else if (lrc < 0) {
+ failed++;
+ rc = lrc;
+ }
+ }
+ if (rc)
+ CERROR("%s: fail to cancel %d of %d llog-records: rc = %d\n",
+ cathandle->lgh_ctxt->loc_obd->obd_name, failed, count,
+ rc);
- RETURN(rc);
+ RETURN(rc);
}
EXPORT_SYMBOL(llog_cat_cancel_records);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff