* 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, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef __KERNEL__
-#include <liblustre.h>
-#endif
#include <obd_class.h>
struct llog_handle *loghandle,
struct thandle *th)
{
+ struct llog_thread_info *lgi = llog_info(env);
+ struct llog_logid_rec *rec = &lgi->lgi_logid;
+ struct thandle *handle = NULL;
+ struct dt_device *dt = NULL;
+ struct llog_log_hdr *llh = cathandle->lgh_hdr;
+ int rc, index;
- struct llog_log_hdr *llh;
- struct llog_logid_rec rec = { { 0 }, };
- int rc, index, bitmap_size;
- ENTRY;
-
- llh = cathandle->lgh_hdr;
- bitmap_size = LLOG_BITMAP_SIZE(llh);
-
- index = (cathandle->lgh_last_idx + 1) % bitmap_size;
+ ENTRY;
- /* 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");
+ index = (cathandle->lgh_last_idx + 1) %
+ (OBD_FAIL_PRECHECK(OBD_FAIL_CAT_RECORDS) ? (cfs_fail_val + 1) :
+ LLOG_HDR_BITMAP_SIZE(llh));
+
+ /* 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)) {
+ CWARN("%s: there are no more free slots in catalog\n",
+ loghandle->lgh_ctxt->loc_obd->obd_name);
RETURN(-ENOSPC);
}
if (OBD_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);
+ 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 (index == 0)
- index = 1;
-
- spin_lock(&loghandle->lgh_hdr_lock);
- llh->llh_count++;
- if (ext2_set_bit(index, llh->llh_bitmap)) {
- CERROR("argh, index %u already set in log bitmap?\n",
- index);
- spin_unlock(&loghandle->lgh_hdr_lock);
- LBUG(); /* should never happen */
- }
- spin_unlock(&loghandle->lgh_hdr_lock);
+ LLOG_F_IS_PLAIN | LLOG_F_ZAP_WHEN_EMPTY,
+ &cathandle->lgh_hdr->llh_tgtuuid);
+ if (rc < 0)
+ GOTO(out, rc);
- cathandle->lgh_last_idx = index;
- llh->llh_tail.lrt_index = index;
+ /* build the record for this log in the catalog */
+ rec->lid_hdr.lrh_len = sizeof(*rec);
+ rec->lid_hdr.lrh_type = LLOG_LOGID_MAGIC;
+ rec->lid_id = loghandle->lgh_id;
- CDEBUG(D_RPCTRACE,"new recovery log "DOSTID":%x for index %u of catalog"
- DOSTID"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, index,
- POSTID(&cathandle->lgh_id.lgl_oi));
- /* build the record for this log in the catalog */
- rec.lid_hdr.lrh_len = sizeof(rec);
- rec.lid_hdr.lrh_index = index;
- rec.lid_hdr.lrh_type = LLOG_LOGID_MAGIC;
- rec.lid_id = loghandle->lgh_id;
- rec.lid_tail.lrt_len = sizeof(rec);
- rec.lid_tail.lrt_index = index;
-
- /* update the catalog: header and record */
- rc = llog_write_rec(env, cathandle, &rec.lid_hdr,
- &loghandle->u.phd.phd_cookie, 1, NULL, index, th);
+ /* append the new record into catalog. The new index will be
+ * assigned to the record and updated in rec header */
+ rc = llog_write_rec(env, cathandle, &rec->lid_hdr,
+ &loghandle->u.phd.phd_cookie, LLOG_NEXT_IDX, th);
if (rc < 0)
GOTO(out_destroy, rc);
- loghandle->lgh_hdr->llh_cat_idx = index;
- RETURN(0);
+ CDEBUG(D_OTHER, "new plain 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));
+
+ loghandle->lgh_hdr->llh_cat_idx = rec->lid_hdr.lrh_index;
+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_HDR_BITMAP_SIZE(llh) + 1;
+ llog_trans_destroy(env, loghandle, th);
RETURN(rc);
}
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);
- cfs_list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
+ list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
+ u.phd.phd_entry) {
struct llog_logid *cgl = &loghandle->lgh_id;
if (ostid_id(&cgl->lgl_oi) == ostid_id(&logid->lgl_oi) &&
RETURN(rc);
}
- rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL);
+ rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN | fmt, NULL);
if (rc < 0) {
llog_close(env, loghandle);
loghandle = NULL;
}
down_write(&cathandle->lgh_lock);
- cfs_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;
ENTRY;
- cfs_list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
+ list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
+ u.phd.phd_entry) {
struct llog_log_hdr *llh = loghandle->lgh_hdr;
int index;
/* unlink open-not-created llogs */
- cfs_list_del_init(&loghandle->u.phd.phd_entry);
+ list_del_init(&loghandle->u.phd.phd_entry);
llh = loghandle->lgh_hdr;
if (loghandle->lgh_obj != NULL && llh != NULL &&
(llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
struct llog_handle *loghandle = NULL;
ENTRY;
+
+ if (OBD_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) {
+ if (!llog_is_full(loghandle)) {
up_write(&cathandle->lgh_lock);
- RETURN(loghandle);
- } else {
+ RETURN(loghandle);
+ } else {
up_write(&loghandle->lgh_lock);
- }
+ }
}
+next:
CDEBUG(D_INODE, "use next log\n");
loghandle = cathandle->u.chd.chd_next_log;
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
*
*/
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, struct thandle *th)
+ struct thandle *th)
{
struct llog_handle *loghandle;
- int rc;
- ENTRY;
+ int rc, retried = 0;
+ ENTRY;
+
+ LASSERT(rec->lrh_len <= cathandle->lgh_ctxt->loc_chunk_size);
- LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE);
+retry:
loghandle = llog_cat_current_log(cathandle, th);
LASSERT(!IS_ERR(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, 1, buf, -1, th);
- if (rc < 0)
+ rc = llog_write_rec(env, loghandle, rec, reccookie, LLOG_NEXT_IDX, th);
+ 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, 1, buf,
- -1, 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",
+ cathandle->lgh_ctxt->loc_obd->obd_name, 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;
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);
+ list_add_tail(&loghandle->u.phd.phd_entry,
+ &cathandle->u.chd.chd_head);
}
}
up_write(&cathandle->lgh_lock);
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);
+ list_add_tail(&loghandle->u.phd.phd_entry,
+ &cathandle->u.chd.chd_head);
}
}
up_write(&cathandle->lgh_lock);
if (rc)
GOTO(out, rc);
+ lirec->lid_hdr.lrh_len = sizeof(*lirec);
+
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);
+ if (dt_object_remote(cathandle->lgh_obj)) {
+ /* 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);
+ if (rc)
+ GOTO(out, rc);
+ llog_declare_write_rec(env, cathandle,
+ &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 (!llog_exist(next)) {
- rc = llog_declare_create(env, next, th);
- llog_declare_write_rec(env, cathandle, NULL, -1, th);
+ if (dt_object_remote(cathandle->lgh_obj)) {
+ /* 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_read_nested(&cathandle->lgh_lock,
+ LLOGH_CAT);
+ next = cathandle->u.chd.chd_next_log;
+ down_write_nested(&next->lgh_lock, LLOGH_LOG);
+ if (!llog_exist(next))
+ rc = llog_cat_new_log(env, cathandle,
+ next, NULL);
+ up_write(&next->lgh_lock);
+ up_read(&cathandle->lgh_lock);
+ if (rc < 0)
+ GOTO(out, rc);
+ } else {
+ rc = llog_declare_create(env, next, th);
+ llog_declare_write_rec(env, cathandle,
+ &lirec->lid_hdr, -1, th);
+ }
}
- llog_declare_write_rec(env, next, rec, -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);*/
}
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_rec_hdr *rec, struct llog_cookie *reccookie)
{
struct llog_ctxt *ctxt;
struct dt_device *dt;
LASSERT(ctxt);
LASSERT(ctxt->loc_exp);
- if (cathandle->lgh_obj != NULL) {
- dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt;
- LASSERT(dt);
+ LASSERT(cathandle->lgh_obj != NULL);
+ dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
- th = dt_trans_create(env, dt);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
+ 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 = 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);
+ rc = dt_trans_start_local(env, dt, th);
+ if (rc)
+ GOTO(out_trans, rc);
+ rc = llog_cat_add_rec(env, cathandle, rec, reccookie, 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);
- }
+ dt_trans_stop(env, dt, th);
RETURN(rc);
}
EXPORT_SYMBOL(llog_cat_add);
}
lrc = llog_cancel_rec(env, loghandle, cookies->lgc_index);
- if (lrc == 1) { /* log has been destroyed */
+ 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);
}
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_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;
ENTRY;
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);
}
- if (rec->lrh_index < d->lpd_startcat)
- /* Skip processing of the logs until startcat */
- RETURN(0);
+ /* clean old empty llogs, do not consider current llog in use */
+ /* ignore remote (lgh_obj=NULL) llogs */
+ hdr = llh->lgh_hdr;
+ if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
+ hdr->llh_count == 1 && cat_llh->lgh_obj != NULL &&
+ 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);
+ }
- if (d->lpd_startidx > 0) {
+ 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;
cd.lpcd_first_idx = d->lpd_startidx;
rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
NULL, false);
}
+
+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);
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)
{
d.lpd_startcat = startcat;
d.lpd_startidx = startidx;
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
+ if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
+ llh->llh_count > 1) {
struct llog_process_cat_data cd;
CWARN("catlog "DOSTID" crosses index zero\n",
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);
+ 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,
+ cd.lpcd_first_idx = 0;
+ cd.lpcd_last_idx = cat_llh->lgh_last_idx;
+ 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);
}
RETURN(rc);
}
-EXPORT_SYMBOL(llog_cat_process_or_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 "LPU64"\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)
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("%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);
}
+ /* 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);
+ }
+
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);
RETURN(rc);
}
d.lpd_data = data;
d.lpd_cb = cb;
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
+ if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
+ llh->llh_count > 1) {
CWARN("catalog "DOSTID" crosses index zero\n",
POSTID(&cat_llh->lgh_id.lgl_oi));
rc = llog_reverse_process(env, cat_llh,
llog_cat_reverse_process_cb,
&d, &cd);
- if (rc != 0)
- RETURN(rc);
+ if (rc != 0)
+ RETURN(rc);
- cd.lpcd_first_idx = le32_to_cpu(llh->llh_cat_idx);
- cd.lpcd_last_idx = 0;
+ cd.lpcd_first_idx = le32_to_cpu(llh->llh_cat_idx);
+ cd.lpcd_last_idx = 0;
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 bitmap_size;
- 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;
+
+ bitmap_size = LLOG_HDR_BITMAP_SIZE(llh);
+ /*
+ * 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) % bitmap_size;
+ if (!ext2_test_bit(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_RPCTRACE, "Set catlog "DOSTID" first idx %u,"
+ " (last_idx %u)\n", POSTID(&cathandle->lgh_id.lgl_oi),
+ llh->llh_cat_idx, cathandle->lgh_last_idx);
}
RETURN(0);
down_write(&cathandle->lgh_lock);
if (cathandle->u.chd.chd_current_log == loghandle)
cathandle->u.chd.chd_current_log = NULL;
- cfs_list_del_init(&loghandle->u.phd.phd_entry);
+ list_del_init(&loghandle->u.phd.phd_entry);
up_write(&cathandle->lgh_lock);
LASSERT(index == loghandle->u.phd.phd_cookie.lgc_index);
/* 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);
return rc;
}
-int cat_cancel_cb(const struct lu_env *env, struct llog_handle *cathandle,
- 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);
- }
-
- 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_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);
-
- llog_cat_cleanup(env, cathandle, loghandle,
- loghandle->u.phd.phd_cookie.lgc_index);
- }
- llog_handle_put(loghandle);
-
- 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)
if (rc)
RETURN(rc);
- rc = llog_process_or_fork(env, llh, cat_cancel_cb, NULL, NULL, false);
- if (rc)
- CERROR("%s: llog_process() with cat_cancel_cb failed: rc = "
- "%d\n", llh->lgh_ctxt->loc_obd->obd_name, rc);
RETURN(0);
}
EXPORT_SYMBOL(llog_cat_init_and_process);
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff