-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* 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
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#ifndef __KERNEL__
-#include <liblustre.h>
-#endif
#include <obd_class.h>
-#include <lustre_log.h>
-#include <libcfs/list.h>
+
+#include "llog_internal.h"
/* 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.
*
* Assumes caller has already pushed us into the kernel context and is locking.
*/
-static struct llog_handle *llog_cat_new_log(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;
- ENTRY;
-
- llh = cathandle->lgh_hdr;
- bitmap_size = LLOG_BITMAP_SIZE(llh);
-
- index = (cathandle->lgh_last_idx + 1) % 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));
- }
-
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED))
- RETURN(ERR_PTR(-ENOSPC));
-
- rc = llog_create(cathandle->lgh_ctxt, &loghandle, NULL, NULL);
- if (rc)
- RETURN(ERR_PTR(rc));
-
- rc = llog_init_handle(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;
- if (ext2_set_bit(index, llh->llh_bitmap)) {
- CERROR("argh, index %u already set in log bitmap?\n",
- index);
- LBUG(); /* should never happen */
- }
- cathandle->lgh_last_idx = index;
- llh->llh_count++;
- llh->llh_tail.lrt_index = index;
-
- CDEBUG(D_RPCTRACE,"new recovery log "LPX64":%x for index %u of catalog "
- LPX64"\n", loghandle->lgh_id.lgl_oid, loghandle->lgh_id.lgl_ogen,
- index, cathandle->lgh_id.lgl_oid);
- /* 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(cathandle, &rec.lid_hdr,
- &loghandle->u.phd.phd_cookie, 1, NULL, index);
- if (rc < 0) {
- GOTO(out_destroy, rc);
- }
+ 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;
+
+ ENTRY;
+
+ 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)) {
+ if (cathandle->lgh_name == NULL) {
+ CWARN("%s: there are no more free slots in catalog "
+ DFID":%x\n",
+ loghandle->lgh_ctxt->loc_obd->obd_name,
+ PFID(&cathandle->lgh_id.lgl_oi.oi_fid),
+ cathandle->lgh_id.lgl_ogen);
+ } else {
+ CWARN("%s: there are no more free slots in "
+ "catalog %s\n",
+ loghandle->lgh_ctxt->loc_obd->obd_name,
+ cathandle->lgh_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) {
+ 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);
+ 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 < 0)
+ GOTO(out, rc);
+
+ /* 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;
+
+ /* 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);
+
+ CDEBUG(D_OTHER, "new plain log "DFID".%u of catalog "DFID"\n",
+ PFID(&loghandle->lgh_id.lgl_oi.oi_fid), rec->lid_hdr.lrh_index,
+ PFID(&cathandle->lgh_id.lgl_oi.oi_fid));
+
+ 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;
- loghandle->lgh_hdr->llh_cat_idx = index;
- cathandle->u.chd.chd_current_log = loghandle;
- LASSERT(list_empty(&loghandle->u.phd.phd_entry));
- list_add_tail(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
+out:
+ if (handle != NULL) {
+ handle->th_result = rc >= 0 ? 0 : rc;
+ dt_trans_stop(env, dt, handle);
+ }
+ RETURN(rc);
out_destroy:
- if (rc < 0)
- llog_destroy(loghandle);
-
- RETURN(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);
}
/* Open an existent log handle and add it to the open list.
*
* Assumes caller has already pushed us into the kernel context and is locking.
* We return a lock on the handle to ensure nobody yanks it from us.
+ *
+ * This takes extra reference on llog_handle via llog_handle_get() and require
+ * this reference to be put by caller using llog_handle_put()
*/
-int llog_cat_id2handle(struct llog_handle *cathandle, struct llog_handle **res,
- struct llog_logid *logid)
+int llog_cat_id2handle(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_handle **res, struct llog_logid *logid)
{
- struct llog_handle *loghandle;
- int rc = 0;
- ENTRY;
-
- if (cathandle == NULL)
- RETURN(-EBADF);
-
- list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
- struct llog_logid *cgl = &loghandle->lgh_id;
- if (cgl->lgl_oid == logid->lgl_oid) {
- if (cgl->lgl_ogen != logid->lgl_ogen) {
- CERROR("log "LPX64" generation %x != %x\n",
- logid->lgl_oid, cgl->lgl_ogen,
- logid->lgl_ogen);
- continue;
- }
- loghandle->u.phd.phd_cat_handle = cathandle;
- GOTO(out, rc = 0);
- }
- }
-
- rc = llog_create(cathandle->lgh_ctxt, &loghandle, logid, NULL);
- if (rc) {
- CERROR("error opening log id "LPX64":%x: rc %d\n",
- logid->lgl_oid, logid->lgl_ogen, rc);
- } else {
- rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL);
- if (!rc) {
- list_add(&loghandle->u.phd.phd_entry,
- &cathandle->u.chd.chd_head);
- }
- }
- if (!rc) {
- 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;
- }
-
+ 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) {
+ struct llog_logid *cgl = &loghandle->lgh_id;
+
+ 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) {
+ CWARN("%s: log "DFID" generation %x != %x\n",
+ loghandle->lgh_ctxt->loc_obd->obd_name,
+ PFID(&logid->lgl_oi.oi_fid),
+ cgl->lgl_ogen, logid->lgl_ogen);
+ continue;
+ }
+ loghandle->u.phd.phd_cat_handle = cathandle;
+ up_write(&cathandle->lgh_lock);
+ GOTO(out, rc = 0);
+ }
+ }
+ 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 "DFID":%x: rc = %d\n",
+ cathandle->lgh_ctxt->loc_obd->obd_name,
+ PFID(&logid->lgl_oi.oi_fid), logid->lgl_ogen, rc);
+ RETURN(rc);
+ }
+
+ rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN | fmt, NULL);
+ if (rc < 0) {
+ llog_close(env, loghandle);
+ loghandle = NULL;
+ RETURN(rc);
+ }
+
+ down_write(&cathandle->lgh_lock);
+ 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:
- *res = loghandle;
- RETURN(rc);
+ llog_handle_get(loghandle);
+ *res = loghandle;
+ return 0;
}
-int llog_cat_put(struct llog_handle *cathandle)
+int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle)
{
- struct llog_handle *loghandle, *n;
- int rc;
- ENTRY;
-
- list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
- u.phd.phd_entry) {
- int err = llog_close(loghandle);
- if (err)
- CERROR("error closing loghandle\n");
- }
- rc = llog_close(cathandle);
- RETURN(rc);
+ struct llog_handle *loghandle, *n;
+ int rc;
+
+ 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 */
+ 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) &&
+ (llh->llh_count == 1)) {
+ rc = llog_destroy(env, loghandle);
+ if (rc)
+ CERROR("%s: failure destroying log during "
+ "cleanup: rc = %d\n",
+ loghandle->lgh_ctxt->loc_obd->obd_name,
+ rc);
+
+ index = loghandle->u.phd.phd_cookie.lgc_index;
+ llog_cat_cleanup(env, cathandle, NULL, index);
+ }
+ llog_close(env, loghandle);
+ }
+ /* if handle was stored in ctxt, remove it too */
+ if (cathandle->lgh_ctxt->loc_handle == cathandle)
+ cathandle->lgh_ctxt->loc_handle = NULL;
+ rc = llog_close(env, cathandle);
+ RETURN(rc);
}
-EXPORT_SYMBOL(llog_cat_put);
+EXPORT_SYMBOL(llog_cat_close);
/**
* lockdep markers for nested struct llog_handle::lgh_lock locking.
* NOTE: loghandle is write-locked upon successful return
*/
static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle,
- int create)
+ struct thandle *th)
{
struct llog_handle *loghandle = NULL;
ENTRY;
- 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;
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
- up_read(&cathandle->lgh_lock);
- RETURN(loghandle);
- } else {
- up_write(&loghandle->lgh_lock);
- }
- }
- if (!create) {
- if (loghandle)
- down_write(&loghandle->lgh_lock);
- up_read(&cathandle->lgh_lock);
- RETURN(loghandle);
- }
- up_read(&cathandle->lgh_lock);
- /* time to create new log */
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_LLOG_CREATE_FAILED2)) {
+ down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ GOTO(next, loghandle);
+ }
- /* first, we have to make sure the state hasn't changed */
- down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ 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;
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
- up_write(&cathandle->lgh_lock);
+ struct llog_log_hdr *llh;
+
+ down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ llh = loghandle->lgh_hdr;
+ if (llh == NULL || !llog_is_full(loghandle)) {
+ up_read(&cathandle->lgh_lock);
RETURN(loghandle);
} else {
- up_write(&loghandle->lgh_lock);
+ up_write(&loghandle->lgh_lock);
}
}
+ up_read(&cathandle->lgh_lock);
+
+ /* time to use next log */
+
+ /* first, we have to make sure the state hasn't changed */
+ down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+ loghandle = cathandle->u.chd.chd_current_log;
+ if (loghandle) {
+ struct llog_log_hdr *llh;
+
+ down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+ llh = loghandle->lgh_hdr;
+ LASSERT(llh);
+ 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);
+}
- CDEBUG(D_INODE, "creating new log\n");
- loghandle = llog_cat_new_log(cathandle);
- if (!IS_ERR(loghandle))
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- up_write(&cathandle->lgh_lock);
- 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
*
* Assumes caller has already pushed us into the kernel context.
*/
-int llog_cat_add_rec(struct llog_handle *cathandle, struct llog_rec_hdr *rec,
- struct llog_cookie *reccookie, void *buf)
+int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
+ 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);
+
+retry:
+ loghandle = llog_cat_current_log(cathandle, th);
+ 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) {
+ 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 == -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);
+}
+EXPORT_SYMBOL(llog_cat_add_rec);
- LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE);
- loghandle = llog_cat_current_log(cathandle, 1);
- if (IS_ERR(loghandle))
- RETURN(PTR_ERR(loghandle));
- /* loghandle is already locked by llog_cat_current_log() for us */
- rc = llog_write_rec(loghandle, rec, reccookie, 1, buf, -1);
- up_write(&loghandle->lgh_lock);
- if (rc == -ENOSPC) {
- /* to create a new plain log */
- loghandle = llog_cat_current_log(cathandle, 1);
- if (IS_ERR(loghandle))
- RETURN(PTR_ERR(loghandle));
- rc = llog_write_rec(loghandle, rec, reccookie, 1, buf, -1);
- up_write(&loghandle->lgh_lock);
- }
+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_thread_info *lgi = llog_info(env);
+ struct llog_logid_rec *lirec = &lgi->lgi_logid;
+ struct llog_handle *loghandle, *next;
+ int rc = 0;
+
+ 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 ||
+ 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 ||
+ IS_ERR(cathandle->u.chd.chd_next_log)) {
+ 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);
+ }
+ if (rc)
+ GOTO(out, rc);
+
+ lirec->lid_hdr.lrh_len = sizeof(*lirec);
+
+ if (!llog_exist(cathandle->u.chd.chd_current_log)) {
+ 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 == -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 (!IS_ERR_OR_NULL(next)) {
+ if (!llog_exist(next)) {
+ 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_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,
+ &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);*/
+ }
+out:
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_cat_declare_add_rec);
- RETURN(rc);
+int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct llog_cookie *reccookie)
+{
+ struct llog_ctxt *ctxt;
+ struct dt_device *dt;
+ struct thandle *th = NULL;
+ int rc;
+
+ ctxt = cathandle->lgh_ctxt;
+ LASSERT(ctxt);
+ LASSERT(ctxt->loc_exp);
+
+ 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));
+
+ 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, th);
+out_trans:
+ dt_trans_stop(env, dt, th);
+ RETURN(rc);
}
-EXPORT_SYMBOL(llog_cat_add_rec);
+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
*
* Assumes caller has already pushed us into the kernel context.
*/
-int llog_cat_cancel_records(struct llog_handle *cathandle, int count,
- struct llog_cookie *cookies)
+int llog_cat_cancel_records(const struct lu_env *env,
+ struct llog_handle *cathandle, int count,
+ struct llog_cookie *cookies)
{
- int i, index, rc = 0;
- ENTRY;
-
- 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;
-
- rc = llog_cat_id2handle(cathandle, &loghandle, lgl);
- if (rc) {
- CERROR("Cannot find log "LPX64"\n", lgl->lgl_oid);
- break;
- }
-
- down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
- rc = llog_cancel_rec(loghandle, cookies->lgc_index);
- up_write(&loghandle->lgh_lock);
-
- if (rc == 1) { /* log has been destroyed */
- index = loghandle->u.phd.phd_cookie.lgc_index;
- if (cathandle->u.chd.chd_current_log == loghandle)
- cathandle->u.chd.chd_current_log = NULL;
- llog_free_handle(loghandle);
-
- LASSERT(index);
- llog_cat_set_first_idx(cathandle, index);
- rc = llog_cancel_rec(cathandle, index);
- if (rc == 0)
- CDEBUG(D_RPCTRACE,"cancel plain log at index %u"
- " of catalog "LPX64"\n",
- index, cathandle->lgh_id.lgl_oid);
- }
- }
- up_write(&cathandle->lgh_lock);
-
- RETURN(rc);
+ int i, index, 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) {
+ CDEBUG(D_HA, "%s: cannot find llog for handle "DFID":%x"
+ ": rc = %d\n",
+ cathandle->lgh_ctxt->loc_obd->obd_name,
+ PFID(&lgl->lgl_oi.oi_fid), lgl->lgl_ogen, rc);
+ failed++;
+ continue;
+ }
+
+ 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.
+ */
+ lrc = -ENOENT;
+ CDEBUG(D_HA, "%s: llog "DFID":%x does not exist"
+ ": rc = %d\n",
+ cathandle->lgh_ctxt->loc_obd->obd_name,
+ PFID(&lgl->lgl_oi.oi_fid), lgl->lgl_ogen, lrc);
+ failed++;
+ if (rc == 0)
+ rc = lrc;
+ continue;
+ }
+
+ 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;
+ lrc = llog_cat_cleanup(env, cathandle, loghandle,
+ index);
+ if (rc == 0)
+ rc = lrc;
+ } else if (lrc == -ENOENT) {
+ if (rc == 0) /* ENOENT shouldn't rewrite any error */
+ rc = lrc;
+ } else if (lrc < 0) {
+ failed++;
+ if (rc == 0)
+ rc = lrc;
+ }
+ llog_handle_put(loghandle);
+ }
+ 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);
}
EXPORT_SYMBOL(llog_cat_cancel_records);
-int llog_cat_process_cb(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;
- int rc;
+ struct llog_logid_rec *lir = container_of(rec, typeof(*lir), lid_hdr);
+ struct llog_log_hdr *hdr;
+ int rc;
+
+ ENTRY;
+ if (rec->lrh_type != le32_to_cpu(LLOG_LOGID_MAGIC)) {
+ rc = -EINVAL;
+ CWARN("%s: invalid record in catalog "DFID":%x: rc = %d\n",
+ cat_llh->lgh_ctxt->loc_obd->obd_name,
+ PFID(&cat_llh->lgh_id.lgl_oi.oi_fid),
+ cat_llh->lgh_id.lgl_ogen, rc);
+ RETURN(rc);
+ }
+ CDEBUG(D_HA, "processing log "DFID":%x at index %u of catalog "DFID"\n",
+ PFID(&lir->lid_id.lgl_oi.oi_fid), lir->lid_id.lgl_ogen,
+ le32_to_cpu(rec->lrh_index),
+ PFID(&cat_llh->lgh_id.lgl_oi.oi_fid));
+
+ rc = llog_cat_id2handle(env, cat_llh, llhp, &lir->lid_id);
+ if (rc) {
+ /* 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":%x: rc = %d\n",
+ cat_llh->lgh_ctxt->loc_obd->obd_name,
+ PFID(&lir->lid_id.lgl_oi.oi_fid),
+ lir->lid_id.lgl_ogen, rc);
+
+ RETURN(rc);
+ }
+
+ /* clean old empty llogs, do not consider current llog in use */
+ /* ignore remote (lgh_obj == NULL) llogs */
+ hdr = (*llhp)->lgh_hdr;
+ if ((hdr->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
+ hdr->llh_count == 1 && cat_llh->lgh_obj != NULL &&
+ *llhp != cat_llh->u.chd.chd_current_log) {
+ rc = llog_destroy(env, *llhp);
+ if (rc)
+ CWARN("%s: can't destroy empty log "DFID": rc = %d\n",
+ (*llhp)->lgh_ctxt->loc_obd->obd_name,
+ PFID(&lir->lid_id.lgl_oi.oi_fid), rc);
+ rc = LLOG_DEL_PLAIN;
+ }
+
+ RETURN(rc);
+}
- ENTRY;
- if (rec->lrh_type != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- RETURN(-EINVAL);
- }
- CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
- LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
- rec->lrh_index, cat_llh->lgh_id.lgl_oid);
-
- rc = llog_cat_id2handle(cat_llh, &llh, &lir->lid_id);
- if (rc) {
- CERROR("Cannot find handle for log "LPX64"\n",
- lir->lid_id.lgl_oid);
- 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;
+ rc = llog_cat_process_common(env, cat_llh, rec, &llh);
+ if (rc)
+ GOTO(out, rc);
+
+ 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;
+ 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 */
+ d->lpd_startidx = 0;
+ } else {
+ rc = llog_process_or_fork(env, llh, d->lpd_cb, d->lpd_data,
+ NULL, false);
+ }
- rc = llog_process(llh, d->lpd_cb, d->lpd_data, NULL);
- RETURN(rc);
+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);
+ } else if (rc == LLOG_DEL_RECORD) {
+ /* clear wrong catalog entry */
+ rc = llog_cat_cleanup(env, cat_llh, NULL, rec->lrh_index);
+ }
+
+ if (llh)
+ llog_handle_put(llh);
+
+ RETURN(rc);
}
-int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data)
+int llog_cat_process_or_fork(const struct lu_env *env,
+ 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_process_cat_data cd;
struct llog_log_hdr *llh = cat_llh->lgh_hdr;
int rc;
ENTRY;
LASSERT(llh->llh_flags & LLOG_F_IS_CAT);
d.lpd_data = data;
d.lpd_cb = cb;
-
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
- CWARN("catlog "LPX64" crosses index zero\n",
- cat_llh->lgh_id.lgl_oid);
-
- cd.lpcd_first_idx = llh->llh_cat_idx;
- cd.lpcd_last_idx = 0;
- rc = llog_process(cat_llh, llog_cat_process_cb, &d, &cd);
- if (rc != 0)
- RETURN(rc);
-
- cd.lpcd_first_idx = 0;
- cd.lpcd_last_idx = cat_llh->lgh_last_idx;
- rc = llog_process(cat_llh, llog_cat_process_cb, &d, &cd);
+ d.lpd_startcat = startcat;
+ d.lpd_startidx = startidx;
+
+ if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
+ llh->llh_count > 1) {
+ struct llog_process_cat_data cd;
+
+ CWARN("%s: catlog "DFID" crosses index zero\n",
+ cat_llh->lgh_ctxt->loc_obd->obd_name,
+ PFID(&cat_llh->lgh_id.lgl_oi.oi_fid));
+
+ cd.lpcd_first_idx = llh->llh_cat_idx;
+ cd.lpcd_last_idx = 0;
+ 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, cat_cb,
+ &d, &cd, fork);
} else {
- rc = llog_process(cat_llh, llog_cat_process_cb, &d, NULL);
+ rc = llog_process_or_fork(env, cat_llh, cat_cb,
+ &d, NULL, fork);
}
RETURN(rc);
}
-EXPORT_SYMBOL(llog_cat_process);
-#ifdef __KERNEL__
-int llog_cat_process_thread(void *data)
+int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh,
+ llog_cb_t cb, void *data, int startcat, int startidx)
{
- struct llog_process_cat_args *args = data;
- struct llog_ctxt *ctxt = args->lpca_ctxt;
- struct llog_handle *llh = NULL;
- void *cb = args->lpca_cb;
- struct llog_logid logid;
- int rc;
- ENTRY;
+ return llog_cat_process_or_fork(env, cat_llh, llog_cat_process_cb,
+ cb, data, startcat, startidx, false);
+}
+EXPORT_SYMBOL(llog_cat_process);
- cfs_daemonize_ctxt("ll_log_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",
+ PFID(&llh->lgh_id.lgl_oi.oi_fid), size, *cum_size);
+ }
+
+ if (llh != NULL)
+ llog_handle_put(llh);
+
+ RETURN(0);
+}
- logid = *(struct llog_logid *)(args->lpca_arg);
- rc = llog_create(ctxt, &llh, &logid, NULL);
- if (rc) {
- CERROR("llog_create() failed %d\n", rc);
- GOTO(out, rc);
- }
- rc = llog_init_handle(llh, LLOG_F_IS_CAT, NULL);
- if (rc) {
- CERROR("llog_init_handle failed %d\n", rc);
- GOTO(release_llh, rc);
- }
+__u64 llog_cat_size(const struct lu_env *env, struct llog_handle *cat_llh)
+{
+ __u64 size = llog_size(env, cat_llh);
- if (cb) {
- rc = llog_cat_process(llh, (llog_cb_t)cb, NULL);
- if (rc != LLOG_PROC_BREAK)
- CERROR("llog_cat_process() failed %d\n", rc);
- } else {
- CWARN("No callback function for recovery\n");
- }
+ llog_cat_process_or_fork(env, cat_llh, llog_cat_size_cb,
+ NULL, &size, 0, 0, false);
- /*
- * Make sure that all cached data is sent.
- */
- llog_sync(ctxt, NULL);
- GOTO(release_llh, rc);
-release_llh:
- rc = llog_cat_put(llh);
- if (rc)
- CERROR("llog_cat_put() failed %d\n", rc);
-out:
- llog_ctxt_put(ctxt);
- OBD_FREE_PTR(args);
- return rc;
+ return size;
}
-EXPORT_SYMBOL(llog_cat_process_thread);
-#endif
+EXPORT_SYMBOL(llog_cat_size);
-static int llog_cat_reverse_process_cb(struct llog_handle *cat_llh,
- struct llog_rec_hdr *rec, void *data)
+/* 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)
{
- struct llog_process_data *d = data;
- struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
- struct llog_handle *llh;
- int rc;
+ /* simulate almost full Catalog */
+ if (OBD_FAIL_CHECK(OBD_FAIL_CAT_FREE_RECORDS))
+ return cfs_fail_val;
- if (le32_to_cpu(rec->lrh_type) != LLOG_LOGID_MAGIC) {
- CERROR("invalid record in catalog\n");
- RETURN(-EINVAL);
- }
- CDEBUG(D_HA, "processing log "LPX64":%x at index %u of catalog "
- LPX64"\n", lir->lid_id.lgl_oid, lir->lid_id.lgl_ogen,
- le32_to_cpu(rec->lrh_index), cat_llh->lgh_id.lgl_oid);
-
- rc = llog_cat_id2handle(cat_llh, &llh, &lir->lid_id);
- if (rc) {
- CERROR("Cannot find handle for log "LPX64"\n",
- lir->lid_id.lgl_oid);
- RETURN(rc);
- }
+ if (cat_llh->lgh_hdr->llh_count == 1)
+ return LLOG_HDR_BITMAP_SIZE(cat_llh->lgh_hdr) - 1;
- rc = llog_reverse_process(llh, d->lpd_cb, d->lpd_data, NULL);
- RETURN(rc);
+ if (cat_llh->lgh_last_idx > cat_llh->lgh_hdr->llh_cat_idx)
+ return LLOG_HDR_BITMAP_SIZE(cat_llh->lgh_hdr) - 1 +
+ 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_handle *llh;
+ int rc;
+
+ ENTRY;
+ rc = llog_cat_process_common(env, cat_llh, rec, &llh);
+
+ /* 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);
+ }
+ if (rc)
+ RETURN(rc);
+
+ rc = llog_reverse_process(env, llh, d->lpd_cb, d->lpd_data, NULL);
+
+ /* 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);
}
-int llog_cat_reverse_process(struct llog_handle *cat_llh,
- llog_cb_t cb, void *data)
+int llog_cat_reverse_process(const struct lu_env *env,
+ struct llog_handle *cat_llh,
+ llog_cb_t cb, void *data)
{
struct llog_process_data d;
struct llog_process_cat_data cd;
d.lpd_data = data;
d.lpd_cb = cb;
- if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
- CWARN("catalog "LPX64" crosses index zero\n",
- cat_llh->lgh_id.lgl_oid);
-
- cd.lpcd_first_idx = 0;
- cd.lpcd_last_idx = cat_llh->lgh_last_idx;
- rc = llog_reverse_process(cat_llh, llog_cat_reverse_process_cb,
- &d, &cd);
- if (rc != 0)
- RETURN(rc);
-
- cd.lpcd_first_idx = le32_to_cpu(llh->llh_cat_idx);
- cd.lpcd_last_idx = 0;
- rc = llog_reverse_process(cat_llh, llog_cat_reverse_process_cb,
- &d, &cd);
+ if (llh->llh_cat_idx >= cat_llh->lgh_last_idx &&
+ llh->llh_count > 1) {
+ CWARN("%s: catalog "DFID" crosses index zero\n",
+ cat_llh->lgh_ctxt->loc_obd->obd_name,
+ PFID(&cat_llh->lgh_id.lgl_oi.oi_fid));
+
+ 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);
+ if (rc != 0)
+ RETURN(rc);
+
+ 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);
} else {
- rc = llog_reverse_process(cat_llh, llog_cat_reverse_process_cb,
- &d, NULL);
+ rc = llog_reverse_process(env, cat_llh,
+ llog_cat_reverse_process_cb,
+ &d, NULL);
}
RETURN(rc);
}
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;
-
- 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 "LPX64" first idx %u\n",
- cathandle->lgh_id.lgl_oid, llh->llh_cat_idx);
- }
+ struct llog_log_hdr *llh = cathandle->lgh_hdr;
+ int bitmap_size;
+
+ 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, "catlog "DFID" first idx %u, last_idx %u\n",
+ PFID(&cathandle->lgh_id.lgl_oi.oi_fid),
+ llh->llh_cat_idx, cathandle->lgh_last_idx);
+ }
+
+ RETURN(0);
+}
- RETURN(0);
+/* Cleanup deleted plain llog traces from catalog */
+int llog_cat_cleanup(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_handle *loghandle, int index)
+{
+ int rc;
+
+ LASSERT(index);
+ if (loghandle != NULL) {
+ /* remove destroyed llog from catalog list and
+ * chd_current_log variable */
+ down_write(&cathandle->lgh_lock);
+ if (cathandle->u.chd.chd_current_log == loghandle)
+ 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);
+ /* 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 "DFID"\n",
+ index, PFID(&cathandle->lgh_id.lgl_oi.oi_fid));
+ return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff