*
* 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, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/obdclass/llog_cat.c
*
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef __KERNEL__
-#include <liblustre.h>
-#endif
#include <obd_class.h>
#include "llog_internal.h"
+
+/**
+ * lockdep markers for nested struct llog_handle::lgh_lock locking.
+ */
+enum {
+ LLOGH_CAT,
+ LLOGH_LOG,
+};
+
/* Create a new log handle and add it to the open list.
* This log handle will be closed when all of the records in it are removed.
*
{
struct llog_thread_info *lgi = llog_info(env);
struct llog_logid_rec *rec = &lgi->lgi_logid;
- int rc;
+ struct thandle *handle = NULL;
+ struct dt_device *dt = NULL;
+ struct llog_log_hdr *llh = cathandle->lgh_hdr;
+ int rc, index;
ENTRY;
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
+ index = (cathandle->lgh_last_idx + 1) % (llog_max_idx(llh) + 1);
+
+ /* check that new llog index will not overlap with the first one.
+ * - llh_cat_idx is the index just before the first/oldest still in-use
+ * index in catalog
+ * - lgh_last_idx is the last/newest used index in catalog
+ *
+ * When catalog is not wrapped yet then lgh_last_idx is always larger
+ * than llh_cat_idx. After the wrap around lgh_last_idx re-starts
+ * from 0 and llh_cat_idx becomes the upper limit for it
+ *
+ * Check if catalog has already wrapped around or not by comparing
+ * last_idx and cat_idx */
+ if ((index == llh->llh_cat_idx + 1 && llh->llh_count > 1) ||
+ (index == 0 && llh->llh_cat_idx == 0)) {
+ if (cathandle->lgh_name == NULL) {
+ CWARN("%s: there are no more free slots in catalog "DFID"\n",
+ loghandle2name(loghandle),
+ PLOGID(&cathandle->lgh_id));
+ } else {
+ CWARN("%s: there are no more free slots in catalog %s\n",
+ loghandle2name(loghandle), cathandle->lgh_name);
+ }
+ RETURN(-ENOSPC);
+ }
+
+ if (CFS_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
RETURN(-ENOSPC);
+ if (loghandle->lgh_hdr != NULL) {
+ /* 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_LARGE(loghandle->lgh_hdr, loghandle->lgh_hdr_size);
+ loghandle->lgh_hdr = NULL;
+ }
+
+ if (th == NULL) {
+ dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
+
+ handle = dt_trans_create(env, dt);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ /* Create update llog object synchronously, which
+ * happens during inialization process see
+ * lod_sub_prep_llog(), to make sure the update
+ * llog object is created before corss-MDT writing
+ * updates into the llog object */
+ if (cathandle->lgh_ctxt->loc_flags & LLOG_CTXT_FLAG_NORMAL_FID)
+ handle->th_sync = 1;
+
+ handle->th_wait_submit = 1;
+
+ rc = llog_declare_create(env, loghandle, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rec->lid_hdr.lrh_len = sizeof(*rec);
+ rec->lid_hdr.lrh_type = LLOG_LOGID_MAGIC;
+ rec->lid_id = loghandle->lgh_id;
+ rc = llog_declare_write_rec(env, cathandle, &rec->lid_hdr, -1,
+ handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = dt_trans_start_local(env, dt, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ th = handle;
+ }
+
rc = llog_create(env, loghandle, th);
/* if llog is already created, no need to initialize it */
if (rc == -EEXIST) {
- RETURN(0);
+ GOTO(out, rc = 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);
+ loghandle2name(loghandle), rc);
+ GOTO(out, rc);
}
rc = llog_init_handle(env, loghandle,
LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY,
&cathandle->lgh_hdr->llh_tgtuuid);
- if (rc)
- GOTO(out_destroy, rc);
+ if (rc < 0)
+ GOTO(out, rc);
/* build the record for this log in the catalog */
rec->lid_hdr.lrh_len = sizeof(*rec);
if (rc < 0)
GOTO(out_destroy, rc);
- CDEBUG(D_OTHER, "new recovery log "DOSTID":%x for index %u of catalog"
- DOSTID"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, rec->lid_hdr.lrh_index,
- POSTID(&cathandle->lgh_id.lgl_oi));
+ CDEBUG(D_OTHER, "new plain log "DFID".%u of catalog "DFID"\n",
+ PLOGID(&loghandle->lgh_id), rec->lid_hdr.lrh_index,
+ PLOGID(&cathandle->lgh_id));
loghandle->lgh_hdr->llh_cat_idx = rec->lid_hdr.lrh_index;
- RETURN(0);
+
+ /* 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;
+ }
+ if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PLAIN_RECORDS) ||
+ CFS_FAIL_PRECHECK(OBD_FAIL_CATALOG_FULL_CHECK))) {
+ // limit the numer of plain records for test
+ loghandle->lgh_max_size = loghandle->lgh_hdr_size +
+ cfs_fail_val * 64;
+ }
+
+ rc = 0;
+
+out:
+ if (handle != NULL) {
+ handle->th_result = rc >= 0 ? 0 : rc;
+ dt_trans_stop(env, dt, handle);
+ }
+ RETURN(rc);
+
out_destroy:
- llog_destroy(env, loghandle);
+ /* to signal llog_cat_close() it shouldn't try to destroy the llog,
+ * we want to destroy it in this transaction, otherwise the object
+ * becomes an orphan */
+ loghandle->lgh_hdr->llh_flags &= ~LLOG_F_ZAP_WHEN_EMPTY;
+ /* this is to mimic full log, so another llog_cat_current_log()
+ * can skip it and ask for another onet */
+ loghandle->lgh_last_idx = llog_max_idx(loghandle->lgh_hdr) + 1;
+ llog_trans_destroy(env, loghandle, th);
+ if (handle != NULL)
+ dt_trans_stop(env, dt, handle);
RETURN(rc);
}
+static int llog_cat_refresh(const struct lu_env *env,
+ struct llog_handle *cathandle)
+{
+ struct llog_handle *loghandle;
+ int rc;
+
+ down_write(&cathandle->lgh_lock);
+ list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
+ u.phd.phd_entry) {
+ if (!llog_exist(loghandle))
+ continue;
+
+ down_write(&loghandle->lgh_lock);
+ rc = llog_read_header(env, loghandle, NULL);
+ up_write(&loghandle->lgh_lock);
+ if (rc)
+ goto unlock;
+ }
+
+ rc = llog_read_header(env, cathandle, NULL);
+unlock:
+ up_write(&cathandle->lgh_lock);
+
+ return rc;
+}
+
+/*
+ * prepare current/next log for catalog.
+ *
+ * if \a *ploghandle is NULL, open it, and declare create, NB, if \a
+ * *ploghandle is remote, create it synchronously here, see comments
+ * below.
+ *
+ * \a cathandle->lgh_lock is down_read-ed, it gets down_write-ed if \a
+ * *ploghandle has to be opened.
+ */
+static int llog_cat_prep_log(const struct lu_env *env,
+ struct llog_handle *cathandle,
+ struct llog_handle **ploghandle,
+ struct thandle *th)
+{
+ int rc;
+ int sem_upgraded;
+
+start:
+ rc = 0;
+ sem_upgraded = 0;
+ if (IS_ERR_OR_NULL(*ploghandle)) {
+ up_read(&cathandle->lgh_lock);
+ down_write(&cathandle->lgh_lock);
+ sem_upgraded = 1;
+ if (IS_ERR_OR_NULL(*ploghandle)) {
+ struct llog_handle *loghandle;
+
+ rc = llog_open(env, cathandle->lgh_ctxt, &loghandle,
+ NULL, NULL, LLOG_OPEN_NEW);
+ if (!rc) {
+ *ploghandle = loghandle;
+ list_add_tail(&loghandle->u.phd.phd_entry,
+ &cathandle->u.chd.chd_head);
+ }
+ }
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ rc = llog_exist(*ploghandle);
+ if (rc < 0)
+ GOTO(out, rc);
+ if (rc)
+ GOTO(out, rc = 0);
+
+ if (dt_object_remote(cathandle->lgh_obj)) {
+ down_write_nested(&(*ploghandle)->lgh_lock, LLOGH_LOG);
+ if (!llog_exist(*ploghandle)) {
+ /* 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. */
+ rc = llog_cat_new_log(env, cathandle, *ploghandle,
+ NULL);
+ if (rc == -ESTALE) {
+ up_write(&(*ploghandle)->lgh_lock);
+ if (sem_upgraded)
+ up_write(&cathandle->lgh_lock);
+ else
+ up_read(&cathandle->lgh_lock);
+
+ rc = llog_cat_refresh(env, cathandle);
+ down_read_nested(&cathandle->lgh_lock,
+ LLOGH_CAT);
+ if (rc)
+ return rc;
+ /* *ploghandle might become NULL, restart */
+ goto start;
+ }
+ }
+ up_write(&(*ploghandle)->lgh_lock);
+ } else {
+ struct llog_thread_info *lgi = llog_info(env);
+ struct llog_logid_rec *lirec = &lgi->lgi_logid;
+
+ rc = llog_declare_create(env, *ploghandle, th);
+ if (rc)
+ GOTO(out, rc);
+
+ lirec->lid_hdr.lrh_len = sizeof(*lirec);
+ rc = llog_declare_write_rec(env, cathandle, &lirec->lid_hdr, -1,
+ th);
+ }
+
+out:
+ if (sem_upgraded) {
+ up_write(&cathandle->lgh_lock);
+ down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ if (rc == 0)
+ goto start;
+ }
+ return rc;
+}
+
/* Open an existent log handle and add it to the open list.
* This log handle will be closed when all of the records in it are removed.
*
struct llog_handle **res, struct llog_logid *logid)
{
struct llog_handle *loghandle;
+ enum llog_flag fmt;
int rc = 0;
ENTRY;
if (cathandle == NULL)
RETURN(-EBADF);
+ fmt = cathandle->lgh_hdr->llh_flags & LLOG_F_EXT_MASK;
down_write(&cathandle->lgh_lock);
list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
u.phd.phd_entry) {
if (ostid_id(&cgl->lgl_oi) == ostid_id(&logid->lgl_oi) &&
ostid_seq(&cgl->lgl_oi) == ostid_seq(&logid->lgl_oi)) {
- if (cgl->lgl_ogen != logid->lgl_ogen) {
- CERROR("%s: log "DOSTID" generation %x != %x\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), cgl->lgl_ogen,
- logid->lgl_ogen);
+ *res = llog_handle_get(loghandle);
+ if (!*res) {
+ CERROR("%s: log "DFID" refcount is zero!\n",
+ loghandle2name(loghandle),
+ PLOGID(logid));
continue;
}
loghandle->u.phd.phd_cat_handle = cathandle;
up_write(&cathandle->lgh_lock);
- GOTO(out, rc = 0);
+ RETURN(rc);
}
}
up_write(&cathandle->lgh_lock);
rc = llog_open(env, cathandle->lgh_ctxt, &loghandle, logid, NULL,
LLOG_OPEN_EXISTS);
if (rc < 0) {
- CERROR("%s: error opening log id "DOSTID":%x: rc = %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), logid->lgl_ogen, rc);
+ CERROR("%s: error opening log id "DFID": rc = %d\n",
+ loghandle2name(cathandle), PLOGID(logid), rc);
RETURN(rc);
}
- rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL);
+ rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN |
+ LLOG_F_ZAP_WHEN_EMPTY | fmt, NULL);
if (rc < 0) {
llog_close(env, loghandle);
- loghandle = NULL;
+ *res = NULL;
RETURN(rc);
}
+ *res = llog_handle_get(loghandle);
+ LASSERT(*res);
down_write(&cathandle->lgh_lock);
- list_add(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
+ list_add_tail(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
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;
- EXIT;
-out:
- llog_handle_get(loghandle);
- *res = loghandle;
- return 0;
+ RETURN(0);
}
int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle)
if (rc)
CERROR("%s: failure destroying log during "
"cleanup: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name,
- rc);
+ loghandle2name(loghandle), rc);
index = loghandle->u.phd.phd_cookie.lgc_index;
llog_cat_cleanup(env, cathandle, NULL, index);
}
EXPORT_SYMBOL(llog_cat_close);
-/**
- * lockdep markers for nested struct llog_handle::lgh_lock locking.
- */
-enum {
- LLOGH_CAT,
- LLOGH_LOG
-};
-
/** Return the currently active log handle. If the current log handle doesn't
* have enough space left for the current record, start a new one.
*
struct llog_handle *loghandle = NULL;
ENTRY;
+
+ if (CFS_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED2)) {
+ down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ GOTO(next, loghandle);
+ }
+
down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
loghandle = cathandle->u.chd.chd_current_log;
if (loghandle) {
down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
llh = loghandle->lgh_hdr;
- if (llh == NULL ||
- loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
+ if (llh == NULL || !llog_is_full(loghandle)) {
up_read(&cathandle->lgh_lock);
RETURN(loghandle);
} else {
down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
llh = loghandle->lgh_hdr;
- LASSERT(llh);
- if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
- up_write(&cathandle->lgh_lock);
- RETURN(loghandle);
- } else {
+ if (llh == NULL || !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",
+ loghandle2name(cathandle));
+ 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");
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);
struct thandle *th)
{
struct llog_handle *loghandle;
- int rc;
- ENTRY;
+ int rc, retried = 0;
+ ENTRY;
- LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE);
+ LASSERT(rec->lrh_len <= cathandle->lgh_ctxt->loc_chunk_size);
+
+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)) {
rc = llog_cat_new_log(env, cathandle, loghandle, th);
if (rc < 0) {
up_write(&loghandle->lgh_lock);
+ /* nobody should be trying to use this llog */
+ down_write(&cathandle->lgh_lock);
+ if (cathandle->u.chd.chd_current_log == loghandle)
+ cathandle->u.chd.chd_current_log = NULL;
+ up_write(&cathandle->lgh_lock);
RETURN(rc);
}
}
/* now let's try to add the record */
rc = llog_write_rec(env, loghandle, rec, reccookie, LLOG_NEXT_IDX, th);
- if (rc < 0)
+ if (rc < 0) {
CDEBUG_LIMIT(rc == -ENOSPC ? D_HA : D_ERROR,
"llog_write_rec %d: lh=%p\n", rc, loghandle);
+ /* -ENOSPC is returned if no empty records left
+ * and when it's lack of space on the stogage.
+ * there is no point to try again if it's the second
+ * case. many callers (like llog test) expect ENOSPC,
+ * so we preserve this error code, but look for the
+ * actual cause here */
+ if (rc == -ENOSPC && llog_is_full(loghandle))
+ rc = -ENOBUFS;
+ }
up_write(&loghandle->lgh_lock);
- if (rc == -ENOSPC) {
- /* 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) {
- up_write(&loghandle->lgh_lock);
- RETURN(rc);
- }
- }
- /* now let's try to add the record */
- rc = llog_write_rec(env, loghandle, rec, reccookie,
- LLOG_NEXT_IDX, th);
- if (rc < 0)
- CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle);
- up_write(&loghandle->lgh_lock);
+
+ if (rc == -ENOBUFS) {
+ if (retried++ == 0)
+ GOTO(retry, rc);
+ CERROR("%s: error on 2nd llog: rc = %d\n",
+ loghandle2name(cathandle), rc);
}
RETURN(rc);
struct llog_handle *cathandle,
struct llog_rec_hdr *rec, struct thandle *th)
{
- struct llog_thread_info *lgi = llog_info(env);
- struct llog_logid_rec *lirec = &lgi->lgi_logid;
- struct llog_handle *loghandle, *next;
- int rc = 0;
+ int rc;
ENTRY;
- if (cathandle->u.chd.chd_current_log == NULL) {
- /* declare new plain llog */
- 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;
- list_add_tail(&loghandle->u.phd.phd_entry,
- &cathandle->u.chd.chd_head);
- }
- }
- up_write(&cathandle->lgh_lock);
- } else if (cathandle->u.chd.chd_next_log == NULL) {
- /* declare next plain llog */
- 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;
- list_add_tail(&loghandle->u.phd.phd_entry,
- &cathandle->u.chd.chd_head);
- }
- }
- up_write(&cathandle->lgh_lock);
- }
+start:
+ down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ rc = llog_cat_prep_log(env, cathandle,
+ &cathandle->u.chd.chd_current_log, th);
if (rc)
- GOTO(out, rc);
+ GOTO(unlock, rc);
- lirec->lid_hdr.lrh_len = sizeof(*lirec);
+ rc = llog_cat_prep_log(env, cathandle, &cathandle->u.chd.chd_next_log,
+ th);
+ if (rc)
+ GOTO(unlock, 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, &lirec->lid_hdr, -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, &lirec->lid_hdr,
- -1, th);
- }
- /* XXX: we hope for declarations made for existing llog
- * this might be not correct with some backends
- * where declarations are expected against specific
- * object like ZFS with full debugging enabled */
- /*llog_declare_write_rec(env, next, rec, -1, th);*/
+ if (rc == -ESTALE && dt_object_remote(cathandle->lgh_obj)) {
+ up_read(&cathandle->lgh_lock);
+ rc = llog_cat_refresh(env, cathandle);
+ if (rc)
+ RETURN(rc);
+ goto start;
}
-out:
+
+#if 0
+ /*
+ * XXX: we hope for declarations made for existing llog this might be
+ * not correct with some backends where declarations are expected
+ * against specific object like ZFS with full debugging enabled.
+ */
+ rc = llog_declare_write_rec(env, cathandle->u.chd.chd_next_log, rec, -1,
+ th);
+#endif
+unlock:
+ up_read(&cathandle->lgh_lock);
RETURN(rc);
}
EXPORT_SYMBOL(llog_cat_declare_add_rec);
}
EXPORT_SYMBOL(llog_cat_add);
+int llog_cat_cancel_arr_rec(const struct lu_env *env,
+ struct llog_handle *cathandle,
+ struct llog_logid *lgl, int count, int *index)
+{
+ struct llog_handle *loghandle;
+ int rc;
+
+ ENTRY;
+ rc = llog_cat_id2handle(env, cathandle, &loghandle, lgl);
+ if (rc) {
+ CDEBUG(D_HA, "%s: can't find llog handle for "DFID": rc = %d\n",
+ loghandle2name(cathandle), PLOGID(lgl), rc);
+ RETURN(rc);
+ }
+
+ if ((cathandle->lgh_ctxt->loc_flags &
+ LLOG_CTXT_FLAG_NORMAL_FID) && !llog_exist(loghandle)) {
+ /* For update log, some of loghandles of cathandle
+ * might not exist because remote llog creation might
+ * be failed, so let's skip the record cancellation
+ * for these non-exist llogs.
+ */
+ rc = -ENOENT;
+ CDEBUG(D_HA, "%s: llog "DFID" does not exist: rc = %d\n",
+ loghandle2name(cathandle), PLOGID(lgl), rc);
+ llog_handle_put(env, loghandle);
+ RETURN(rc);
+ }
+
+ rc = llog_cancel_arr_rec(env, loghandle, count, index);
+ if (rc == LLOG_DEL_PLAIN) { /* log has been destroyed */
+ int cat_index;
+
+ cat_index = loghandle->u.phd.phd_cookie.lgc_index;
+ rc = llog_cat_cleanup(env, cathandle, loghandle, cat_index);
+ if (rc)
+ CERROR("%s: fail to cancel catalog record: rc = %d\n",
+ loghandle2name(cathandle), rc);
+ rc = 0;
+
+ }
+ llog_handle_put(env, loghandle);
+
+ if (rc)
+ CERROR("%s: fail to cancel %d llog-records: rc = %d\n",
+ loghandle2name(cathandle), count, rc);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_cat_cancel_arr_rec);
+
/* 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, failed = 0;
+ int i, rc = 0, failed = 0;
ENTRY;
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) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lgl->lgl_oi), rc);
- failed++;
- continue;
- }
+ int lrc;
- lrc = llog_cancel_rec(env, loghandle, cookies->lgc_index);
- if (lrc == LLOG_DEL_PLAIN) { /* log has been destroyed */
- index = loghandle->u.phd.phd_cookie.lgc_index;
- rc = llog_cat_cleanup(env, cathandle, loghandle,
- index);
- } else if (lrc == -ENOENT) {
- if (rc == 0) /* ENOENT shouldn't rewrite any error */
- rc = lrc;
- } else if (lrc < 0) {
+ lrc = llog_cat_cancel_arr_rec(env, cathandle, &cookies->lgc_lgl,
+ 1, &cookies->lgc_index);
+ if (lrc) {
failed++;
- rc = lrc;
+ if (!rc)
+ rc = lrc;
}
- llog_handle_put(loghandle);
}
- if (rc)
+ if (failed)
CERROR("%s: fail to cancel %d of %d llog-records: rc = %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name, failed, count,
- rc);
-
+ loghandle2name(cathandle), failed, count, rc);
RETURN(rc);
}
EXPORT_SYMBOL(llog_cat_cancel_records);
-int llog_cat_process_cb(const struct lu_env *env, struct llog_handle *cat_llh,
- struct llog_rec_hdr *rec, void *data)
+static int llog_cat_process_common(const struct lu_env *env,
+ struct llog_handle *cat_llh,
+ struct llog_rec_hdr *rec,
+ struct llog_handle **llhp)
{
- struct llog_process_data *d = data;
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *llh;
+ struct llog_logid_rec *lir = container_of(rec, typeof(*lir), lid_hdr);
struct llog_log_hdr *hdr;
- int rc;
+ int rc;
- ENTRY;
- if (rec->lrh_type != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- 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));
+ ENTRY;
+ if (rec->lrh_type != le32_to_cpu(LLOG_LOGID_MAGIC)) {
+ rc = -EINVAL;
+ CWARN("%s: invalid record in catalog "DFID": rc = %d\n",
+ loghandle2name(cat_llh), PLOGID(&cat_llh->lgh_id), rc);
+ RETURN(rc);
+ }
+ CDEBUG(D_HA, "processing log "DFID" at index %u of catalog "DFID"\n",
+ PLOGID(&lir->lid_id), le32_to_cpu(rec->lrh_index),
+ PLOGID(&cat_llh->lgh_id));
- rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id);
+ rc = llog_cat_id2handle(env, cat_llh, llhp, &lir->lid_id);
if (rc) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cat_llh->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lir->lid_id.lgl_oi), rc);
- if (rc == -ENOENT || rc == -ESTALE) {
- /* After a server crash, a stub of index
- * record in catlog could be kept, because
- * plain log destroy + catlog index record
- * deletion are not atomic. So we end up with
- * an index but no actual record. Destroy the
- * index and move on. */
- rc = llog_cat_cleanup(env, cat_llh, NULL,
- rec->lrh_index);
- }
+ /* After a server crash, a stub of index record in catlog could
+ * be kept, because plain log destroy + catlog index record
+ * deletion are not atomic. So we end up with an index but no
+ * actual record. Destroy the index and move on. */
+ if (rc == -ENOENT || rc == -ESTALE)
+ rc = LLOG_DEL_RECORD;
+ else if (rc)
+ CWARN("%s: can't find llog handle "DFID": rc = %d\n",
+ loghandle2name(cat_llh), PLOGID(&lir->lid_id),
+ rc);
RETURN(rc);
}
/* clean old empty llogs, do not consider current llog in use */
- hdr = llh->lgh_hdr;
+ /* ignore remote (lgh_obj == NULL) llogs */
+ hdr = (*llhp)->lgh_hdr;
if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- hdr->llh_count == 1 &&
- llh != cat_llh->u.chd.chd_current_log) {
- rc = llog_destroy(env, llh);
+ hdr->llh_count == 1 && cat_llh->lgh_obj != NULL &&
+ *llhp != cat_llh->u.chd.chd_current_log &&
+ *llhp != cat_llh->u.chd.chd_next_log) {
+ rc = llog_destroy(env, *llhp);
if (rc)
- CERROR("%s: fail to destroy empty log: rc = %d\n",
- llh->lgh_ctxt->loc_obd->obd_name, rc);
- GOTO(out, rc = LLOG_DEL_PLAIN);
+ CWARN("%s: can't destroy empty log "DFID": rc = %d\n",
+ loghandle2name((*llhp)), PLOGID(&lir->lid_id),
+ rc);
+ rc = LLOG_DEL_PLAIN;
}
- if (rec->lrh_index < d->lpd_startcat) {
- /* Skip processing of the logs until startcat */
- rc = 0;
- } else if (d->lpd_startidx > 0) {
- struct llog_process_cat_data cd;
+ RETURN(rc);
+}
+
+static int llog_cat_process_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_handle *llh = NULL;
+ int rc;
+
+ ENTRY;
+
+ /* Skip processing of the logs until startcat */
+ if (rec->lrh_index < d->lpd_startcat)
+ RETURN(0);
+
+ rc = llog_cat_process_common(env, cat_llh, rec, &llh);
+ if (rc)
+ GOTO(out, rc);
+
+ if (d->lpd_startidx > 0) {
+ struct llog_process_cat_data cd = {
+ .lpcd_first_idx = 0,
+ .lpcd_last_idx = 0,
+ .lpcd_read_mode = LLOG_READ_MODE_NORMAL,
+ };
+
+ /* startidx is always associated with a catalog index */
+ if (d->lpd_startcat == rec->lrh_index)
+ cd.lpcd_first_idx = d->lpd_startidx;
- cd.lpcd_first_idx = d->lpd_startidx;
- cd.lpcd_last_idx = 0;
rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
&cd, false);
/* Continue processing the next log from idx 0 */
rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
NULL, false);
}
+ if (rc == -ENOENT && (cat_llh->lgh_hdr->llh_flags & LLOG_F_RM_ON_ERR)) {
+ /*
+ * plain llog is reported corrupted, so better to just remove
+ * it if the caller is fine with that.
+ */
+ CERROR("%s: remove corrupted/missing llog "DFID"\n",
+ loghandle2name(cat_llh), PLOGID(&llh->lgh_id));
+ rc = LLOG_DEL_PLAIN;
+ }
out:
/* The empty plain log was destroyed while processing */
- if (rc == LLOG_DEL_PLAIN)
- rc = llog_cat_cleanup(env, cat_llh, llh,
- llh->u.phd.phd_cookie.lgc_index);
- llog_handle_put(llh);
+ if (rc == LLOG_DEL_PLAIN || rc == LLOG_DEL_RECORD)
+ /* clear wrong catalog entry */
+ rc = llog_cat_cleanup(env, cat_llh, llh, rec->lrh_index);
+ else if (rc == LLOG_SKIP_PLAIN)
+ /* processing callback ask to skip the llog -> continue */
+ rc = 0;
+
+ if (llh)
+ llog_handle_put(env, llh);
RETURN(rc);
}
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)
{
- struct llog_process_data d;
- struct llog_log_hdr *llh = cat_llh->lgh_hdr;
- int rc;
- ENTRY;
+ struct llog_log_hdr *llh = cat_llh->lgh_hdr;
+ struct llog_process_data d;
+ struct llog_process_cat_data cd;
+ int rc;
- LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
- d.lpd_data = data;
- d.lpd_cb = cb;
- d.lpd_startcat = startcat;
- d.lpd_startidx = startidx;
+ ENTRY;
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
- struct llog_process_cat_data cd;
+ LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
+ d.lpd_data = data;
+ d.lpd_cb = cb;
+
+ /* default: start from the oldest record */
+ d.lpd_startidx = 0;
+ d.lpd_startcat = llh->llh_cat_idx + 1;
+ cd.lpcd_first_idx = llh->llh_cat_idx;
+ cd.lpcd_last_idx = 0;
+ cd.lpcd_read_mode = LLOG_READ_MODE_NORMAL;
+
+ if (startcat > 0 && startcat <= llog_max_idx(llh)) {
+ /* start from a custom catalog/llog plain indexes*/
+ d.lpd_startidx = startidx;
+ d.lpd_startcat = startcat;
+ cd.lpcd_first_idx = startcat - 1;
+ } else if (startcat != 0) {
+ CWARN("%s: startcat %d out of range for catlog "DFID"\n",
+ loghandle2name(cat_llh), startcat,
+ PLOGID(&cat_llh->lgh_id));
+ RETURN(-EINVAL);
+ }
- CWARN("catlog "DOSTID" crosses index zero\n",
- POSTID(&cat_llh->lgh_id.lgl_oi));
+ startcat = d.lpd_startcat;
- 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,
- &d, &cd, fork);
- if (rc != 0)
+ /* if startcat <= lgh_last_idx, we only need to process the first part
+ * of the catalog (from startcat).
+ */
+ if (llog_cat_is_wrapped(cat_llh) && startcat > cat_llh->lgh_last_idx) {
+ int cat_idx_origin = llh->llh_cat_idx;
+
+ CWARN("%s: catlog "DFID" crosses index zero\n",
+ loghandle2name(cat_llh),
+ PLOGID(&cat_llh->lgh_id));
+
+ /* processing the catalog part at the end */
+ rc = llog_process_or_fork(env, cat_llh, cat_cb, &d, &cd, fork);
+ if (rc)
RETURN(rc);
+ /* Reset the startcat because it has already reached catalog
+ * bottom.
+ * lgh_last_idx value could be increased during processing. So
+ * we process the remaining of catalog entries to be sure.
+ */
+ d.lpd_startcat = 1;
+ d.lpd_startidx = 0;
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,
- &d, &cd, fork);
- } else {
- rc = llog_process_or_fork(env, cat_llh, llog_cat_process_cb,
- &d, NULL, fork);
- }
+ cd.lpcd_last_idx = max(cat_idx_origin, cat_llh->lgh_last_idx);
+ } else if (llog_cat_is_wrapped(cat_llh)) {
+ /* only process 1st part -> stop before reaching 2sd part */
+ cd.lpcd_last_idx = llh->llh_cat_idx;
+ }
- RETURN(rc);
+ /* processing the catalog part at the begining */
+ rc = llog_process_or_fork(env, cat_llh, cat_cb, &d, &cd, fork);
+
+ RETURN(rc);
}
EXPORT_SYMBOL(llog_cat_process_or_fork);
+/**
+ * Process catalog records with a callback
+ *
+ * \note
+ * If "starcat = 0", this is the default processing. "startidx" argument is
+ * ignored and processing begin from the oldest record.
+ * If "startcat > 0", this is a custom starting point. Processing begin with
+ * the llog plain defined in the catalog record at index "startcat". The first
+ * llog plain record to process is at index "startidx + 1".
+ *
+ * \param env Lustre environnement
+ * \param cat_llh Catalog llog handler
+ * \param cb Callback executed for each records (in llog plain files)
+ * \param data Callback data argument
+ * \param startcat Catalog index of the llog plain to start with.
+ * \param startidx Index of the llog plain to start processing. The first
+ * record to process is at startidx + 1.
+ *
+ * \retval 0 processing successfully completed
+ * \retval LLOG_PROC_BREAK processing was stopped by the callback.
+ * \retval -errno on error.
+ */
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_handle *llh = NULL;
+ __u64 *cum_size = d->lpd_data;
+ __u64 size;
+ int rc;
+
+ ENTRY;
+ rc = llog_cat_process_common(env, cat_llh, rec, &llh);
+
+ if (rc == LLOG_DEL_PLAIN) {
+ /* empty log was deleted, don't count it */
+ rc = llog_cat_cleanup(env, cat_llh, llh,
+ llh->u.phd.phd_cookie.lgc_index);
+ } else if (rc == LLOG_DEL_RECORD) {
+ /* clear wrong catalog entry */
+ rc = llog_cat_cleanup(env, cat_llh, NULL, rec->lrh_index);
+ } else {
+ size = llog_size(env, llh);
+ *cum_size += size;
+
+ CDEBUG(D_INFO, "Add llog entry "DFID" size=%llu, tot=%llu\n",
+ PLOGID(&llh->lgh_id), size, *cum_size);
+ }
+
+ if (llh != NULL)
+ llog_handle_put(env, 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);
+
+/* currently returns the number of "free" entries in catalog,
+ * ie the available entries for a new plain LLOG file creation,
+ * even if catalog has wrapped
+ */
+__u32 llog_cat_free_space(struct llog_handle *cat_llh)
+{
+ /* simulate almost full Catalog */
+ if (CFS_FAIL_CHECK(OBD_FAIL_CAT_FREE_RECORDS))
+ return cfs_fail_val;
+
+ if (cat_llh->lgh_hdr->llh_count == 1)
+ return llog_max_idx(cat_llh->lgh_hdr);
+
+ if (cat_llh->lgh_last_idx > cat_llh->lgh_hdr->llh_cat_idx)
+ return llog_max_idx(cat_llh->lgh_hdr) +
+ cat_llh->lgh_hdr->llh_cat_idx - cat_llh->lgh_last_idx;
+
+ /* catalog is presently wrapped */
+ return cat_llh->lgh_hdr->llh_cat_idx - cat_llh->lgh_last_idx;
+}
+EXPORT_SYMBOL(llog_cat_free_space);
+
static int llog_cat_reverse_process_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;
- struct llog_log_hdr *hdr;
int rc;
- if (le32_to_cpu(rec->lrh_type) != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- 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,
- le32_to_cpu(rec->lrh_index), POSTID(&cat_llh->lgh_id.lgl_oi));
-
- rc = llog_cat_id2handle(env, cat_llh, &llh, &lir->lid_id);
- if (rc) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cat_llh->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lir->lid_id.lgl_oi), rc);
- if (rc == -ENOENT || rc == -ESTALE) {
- /* After a server crash, a stub of index
- * record in catlog could be kept, because
- * plain log destroy + catlog index record
- * deletion are not atomic. So we end up with
- * an index but no actual record. Destroy the
- * index and move on. */
- rc = llog_cat_cleanup(env, cat_llh, NULL,
- rec->lrh_index);
- }
-
- RETURN(rc);
- }
+ ENTRY;
+ rc = llog_cat_process_common(env, cat_llh, rec, &llh);
- /* clean old empty llogs, do not consider current llog in use */
- hdr = llh->lgh_hdr;
- if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- hdr->llh_count == 1 &&
- llh != cat_llh->u.chd.chd_current_log) {
- rc = llog_destroy(env, llh);
- if (rc)
- CERROR("%s: fail to destroy empty log: rc = %d\n",
- llh->lgh_ctxt->loc_obd->obd_name, rc);
- GOTO(out, rc = LLOG_DEL_PLAIN);
+ /* The empty plain log was destroyed while processing */
+ if (rc == LLOG_DEL_PLAIN) {
+ rc = llog_cat_cleanup(env, cat_llh, llh,
+ llh->u.phd.phd_cookie.lgc_index);
+ } else if (rc == LLOG_DEL_RECORD) {
+ /* clear wrong catalog entry */
+ rc = llog_cat_cleanup(env, cat_llh, NULL, rec->lrh_index);
+ } else if (rc == LLOG_SKIP_PLAIN) {
+ /* processing callback ask to skip the llog -> continue */
+ rc = 0;
}
+ if (rc)
+ RETURN(rc);
rc = llog_reverse_process(env, llh, d->lpd_cb, d->lpd_data, NULL);
-out:
/* The empty plain was destroyed while processing */
if (rc == LLOG_DEL_PLAIN)
rc = llog_cat_cleanup(env, cat_llh, llh,
llh->u.phd.phd_cookie.lgc_index);
- llog_handle_put(llh);
+ llog_handle_put(env, llh);
RETURN(rc);
}
ENTRY;
LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
+ cd.lpcd_read_mode = LLOG_READ_MODE_NORMAL;
d.lpd_data = data;
d.lpd_cb = cb;
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
- CWARN("catalog "DOSTID" crosses index zero\n",
- POSTID(&cat_llh->lgh_id.lgl_oi));
+ if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
+ llh->llh_count > 1) {
+ CWARN("%s: catalog "DFID" crosses index zero\n",
+ loghandle2name(cat_llh),
+ PLOGID(&cat_llh->lgh_id));
- cd.lpcd_first_idx = 0;
- cd.lpcd_last_idx = cat_llh->lgh_last_idx;
+ cd.lpcd_first_idx = 0;
+ cd.lpcd_last_idx = cat_llh->lgh_last_idx;
rc = llog_reverse_process(env, cat_llh,
llog_cat_reverse_process_cb,
&d, &cd);
}
EXPORT_SYMBOL(llog_cat_reverse_process);
-int llog_cat_set_first_idx(struct llog_handle *cathandle, int index)
+static int llog_cat_set_first_idx(struct llog_handle *cathandle, int idx)
{
- struct llog_log_hdr *llh = cathandle->lgh_hdr;
- int i, bitmap_size, idx;
- ENTRY;
+ struct llog_log_hdr *llh = cathandle->lgh_hdr;
+ int idx_nbr;
- bitmap_size = LLOG_BITMAP_SIZE(llh);
- if (llh->llh_cat_idx == (index - 1)) {
- idx = llh->llh_cat_idx + 1;
- llh->llh_cat_idx = idx;
- if (idx == cathandle->lgh_last_idx)
- goto out;
- for (i = (index + 1) % bitmap_size;
- i != cathandle->lgh_last_idx;
- i = (i + 1) % bitmap_size) {
- if (!ext2_test_bit(i, llh->llh_bitmap)) {
- idx = llh->llh_cat_idx + 1;
- llh->llh_cat_idx = idx;
- } else if (i == 0) {
- llh->llh_cat_idx = 0;
- } else {
- break;
- }
- }
-out:
- CDEBUG(D_RPCTRACE, "set catlog "DOSTID" first idx %u\n",
- POSTID(&cathandle->lgh_id.lgl_oi), llh->llh_cat_idx);
+ ENTRY;
+
+ idx_nbr = llog_max_idx(llh) + 1;
+ /*
+ * The llh_cat_idx equals to the first used index minus 1
+ * so if we canceled the first index then llh_cat_idx
+ * must be renewed.
+ */
+ if (llh->llh_cat_idx == (idx - 1)) {
+ llh->llh_cat_idx = idx;
+
+ while (idx != cathandle->lgh_last_idx) {
+ idx = (idx + 1) % idx_nbr;
+ if (!test_bit_le(idx, LLOG_HDR_BITMAP(llh))) {
+ /* update llh_cat_idx for each unset bit,
+ * expecting the next one is set */
+ llh->llh_cat_idx = idx;
+ } else if (idx == 0) {
+ /* skip header bit */
+ llh->llh_cat_idx = 0;
+ continue;
+ } else {
+ /* the first index is found */
+ break;
+ }
+ }
+
+ CDEBUG(D_HA, "catlog "DFID" first idx %u, last_idx %u\n",
+ PLOGID(&cathandle->lgh_id), llh->llh_cat_idx,
+ cathandle->lgh_last_idx);
}
RETURN(0);
cathandle->u.chd.chd_current_log = NULL;
list_del_init(&loghandle->u.phd.phd_entry);
up_write(&cathandle->lgh_lock);
- LASSERT(index == loghandle->u.phd.phd_cookie.lgc_index);
+ LASSERT(index == loghandle->u.phd.phd_cookie.lgc_index ||
+ loghandle->u.phd.phd_cookie.lgc_index == 0);
/* llog was opened and keep in a list, close it now */
llog_close(env, loghandle);
}
+
+ /* do not attempt to cleanup on-disk llog if on client side */
+ if (cathandle->lgh_obj == NULL)
+ return 0;
+
/* remove plain llog entry from catalog by index */
llog_cat_set_first_idx(cathandle, index);
rc = llog_cancel_rec(env, cathandle, index);
- if (rc == 0)
- CDEBUG(D_HA, "cancel plain log at index"
- " %u of catalog "DOSTID"\n",
- index, POSTID(&cathandle->lgh_id.lgl_oi));
+ if (!rc && loghandle)
+ CDEBUG(D_HA,
+ "cancel plain log "DFID" at index %u of catalog "DFID"\n",
+ PLOGID(&loghandle->lgh_id), index,
+ PLOGID(&cathandle->lgh_id));
return rc;
}
-int cat_cancel_cb(const struct lu_env *env, struct llog_handle *cathandle,
- struct llog_rec_hdr *rec, void *data)
+/* retain log in catalog, and zap it if log is empty */
+int llog_cat_retain_cb(const struct lu_env *env, struct llog_handle *cat,
+ struct llog_rec_hdr *rec, void *data)
{
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *loghandle;
- struct llog_log_hdr *llh;
- int rc;
-
- ENTRY;
-
- if (rec->lrh_type != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- RETURN(-EINVAL);
- }
+ struct llog_handle *log = NULL;
+ int rc;
- 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(&cathandle->lgh_id.lgl_oi));
+ rc = llog_cat_process_common(env, cat, rec, &log);
- rc = llog_cat_id2handle(env, cathandle, &loghandle, &lir->lid_id);
- if (rc) {
- CERROR("%s: cannot find handle for llog "DOSTID": %d\n",
- cathandle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&lir->lid_id.lgl_oi), rc);
- if (rc == -ENOENT || rc == -ESTALE) {
- /* remove index from catalog */
- llog_cat_cleanup(env, cathandle, NULL, rec->lrh_index);
- }
- RETURN(rc);
- }
-
- llh = loghandle->lgh_hdr;
- if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1)) {
- rc = llog_destroy(env, loghandle);
- if (rc)
- CERROR("%s: fail to destroy empty log: rc = %d\n",
- loghandle->lgh_ctxt->loc_obd->obd_name, rc);
+ /* The empty plain log was destroyed while processing */
+ if (rc == LLOG_DEL_PLAIN || rc == LLOG_DEL_RECORD)
+ /* clear wrong catalog entry */
+ rc = llog_cat_cleanup(env, cat, log, rec->lrh_index);
+ else if (!rc)
+ llog_retain(env, log);
- llog_cat_cleanup(env, cathandle, loghandle,
- loghandle->u.phd.phd_cookie.lgc_index);
- }
- llog_handle_put(loghandle);
+ if (log)
+ llog_handle_put(env, log);
- RETURN(rc);
+ return rc;
}
-EXPORT_SYMBOL(cat_cancel_cb);
-
-/* 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;
+EXPORT_SYMBOL(llog_cat_retain_cb);
- rc = llog_init_handle(env, llh, LLOG_F_IS_CAT, NULL);
- if (rc)
- RETURN(rc);
-
- RETURN(0);
-}
-EXPORT_SYMBOL(llog_cat_init_and_process);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff