-/* -*- 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.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: WangDi <wangdi@clusterfs.com>
* Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
+
#define DEBUG_SUBSYSTEM S_FLD
#ifdef __KERNEL__
const char fld_index_name[] = "fld";
static const struct lu_seq_range IGIF_FLD_RANGE = {
- .lsr_start = 1,
- .lsr_end = FID_SEQ_IDIF,
- .lsr_mdt = 0
+ .lsr_start = FID_SEQ_IGIF,
+ .lsr_end = FID_SEQ_IGIF_MAX + 1,
+ .lsr_index = 0,
+ .lsr_flags = LU_SEQ_RANGE_MDT
};
const struct dt_index_features fld_index_features = {
- .dif_flags = DT_IND_UPDATE,
+ .dif_flags = DT_IND_UPDATE | DT_IND_RANGE,
.dif_keysize_min = sizeof(seqno_t),
.dif_keysize_max = sizeof(seqno_t),
.dif_recsize_min = sizeof(struct lu_seq_range),
extern struct lu_context_key fld_thread_key;
-static struct dt_key *fld_key(const struct lu_env *env,
- const seqno_t seq)
+static struct dt_key *fld_key(const struct lu_env *env, const seqno_t seq)
{
struct fld_thread_info *info;
ENTRY;
RETURN((void *)rec);
}
-struct thandle* fld_trans_start(struct lu_server_fld *fld,
- const struct lu_env *env, int credit)
+int fld_declare_index_create(struct lu_server_fld *fld,
+ const struct lu_env *env,
+ const struct lu_seq_range *range,
+ struct thandle *th)
{
- struct fld_thread_info *info;
- struct dt_device *dt_dev;
- struct txn_param *p;
+ int rc;
- dt_dev = lu2dt_dev(fld->lsf_obj->do_lu.lo_dev);
- info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
- p = &info->fti_txn_param;
- txn_param_init(p, credit);
+ ENTRY;
- return dt_dev->dd_ops->dt_trans_start(env, dt_dev, p);
-}
+ if (fld->lsf_no_range_lookup) {
+ /* Stub for underlying FS which can't lookup ranges */
+ return 0;
+ }
-void fld_trans_stop(struct lu_server_fld *fld,
- const struct lu_env *env, struct thandle* th)
-{
- struct dt_device *dt_dev;
+ LASSERT(range_is_sane(range));
- dt_dev = lu2dt_dev(fld->lsf_obj->do_lu.lo_dev);
- dt_dev->dd_ops->dt_trans_stop(env, th);
+ rc = dt_declare_insert(env, fld->lsf_obj, fld_rec(env, range),
+ fld_key(env, range->lsr_start), th);
+ RETURN(rc);
}
/**
* \retval 0 success
* \retval -ve error
*/
-
int fld_index_create(struct lu_server_fld *fld,
const struct lu_env *env,
const struct lu_seq_range *range,
struct thandle *th)
{
- struct dt_object *dt_obj = fld->lsf_obj;
- struct dt_device *dt_dev;
- seqno_t start;
int rc;
ENTRY;
- start = range->lsr_start;
- LASSERT(range_is_sane(range));
- dt_dev = lu2dt_dev(fld->lsf_obj->do_lu.lo_dev);
+ if (fld->lsf_no_range_lookup) {
+ /* Stub for underlying FS which can't lookup ranges */
+ if (range->lsr_index != 0) {
+ CERROR("%s: FLD backend does not support range"
+ "lookups, so DNE and FIDs-on-OST are not"
+ "supported in this configuration\n",
+ fld->lsf_name);
+ return -EINVAL;
+ }
+ }
- rc = dt_obj->do_index_ops->dio_insert(env, dt_obj,
- fld_rec(env, range),
- fld_key(env, start),
- th, BYPASS_CAPA, 1);
+ LASSERT(range_is_sane(range));
+ rc = dt_insert(env, fld->lsf_obj, fld_rec(env, range),
+ fld_key(env, range->lsr_start), th, BYPASS_CAPA, 1);
CDEBUG(D_INFO, "%s: insert given range : "DRANGE" rc = %d\n",
fld->lsf_name, PRANGE(range), rc);
RETURN(rc);
* \retval 0 success
* \retval -ve error
*/
-
int fld_index_delete(struct lu_server_fld *fld,
const struct lu_env *env,
struct lu_seq_range *range,
struct thandle *th)
{
- struct dt_object *dt_obj = fld->lsf_obj;
- struct dt_device *dt_dev;
- seqno_t seq = range->lsr_start;
int rc;
ENTRY;
- dt_dev = lu2dt_dev(fld->lsf_obj->do_lu.lo_dev);
- rc = dt_obj->do_index_ops->dio_delete(env, dt_obj,
- fld_key(env, seq), th,
- BYPASS_CAPA);
-
+ rc = dt_delete(env, fld->lsf_obj, fld_key(env, range->lsr_start), th,
+ BYPASS_CAPA);
CDEBUG(D_INFO, "%s: delete given range : "DRANGE" rc = %d\n",
fld->lsf_name, PRANGE(range), rc);
-
RETURN(rc);
}
/**
- * lookup range for a seq passed
+ * lookup range for a seq passed. note here we only care about the start/end,
+ * caller should handle the attached location data (flags, index).
*
- * \param seq seq for lookup.
- * \param range result of lookup.
+ * \param seq seq for lookup.
+ * \param range result of lookup.
*
- * \retval 0 success
- * \retval -ve error
+ * \retval 0 found, \a range is the matched range;
+ * \retval -ENOENT not found, \a range is the left-side range;
+ * \retval -ve other error;
*/
int fld_index_lookup(struct lu_server_fld *fld,
ENTRY;
+ if (fld->lsf_no_range_lookup) {
+ /* Stub for underlying FS which can't lookup ranges */
+ range->lsr_start = 0;
+ range->lsr_end = ~0;
+ range->lsr_index = 0;
+ range->lsr_flags = LU_SEQ_RANGE_MDT;
+
+ range_cpu_to_be(range, range);
+ return 0;
+ }
+
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
fld_rec = &info->fti_rec;
{
struct thandle *th;
int rc;
-
ENTRY;
- th = fld_trans_start(fld, env, FLD_TXN_INDEX_INSERT_CREDITS);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- rc = fld_index_create(fld, env, &IGIF_FLD_RANGE, th);
- fld_trans_stop(fld, env, th);
- if (rc == -EEXIST)
- rc = 0;
- RETURN(rc);
+
+ th = dt_trans_create(env, lu2dt_dev(fld->lsf_obj->do_lu.lo_dev));
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+ rc = fld_declare_index_create(fld, env, &IGIF_FLD_RANGE, th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = dt_trans_start_local(env, lu2dt_dev(fld->lsf_obj->do_lu.lo_dev),
+ th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = fld_index_create(fld, env, &IGIF_FLD_RANGE, th);
+ if (rc == -EEXIST)
+ rc = 0;
+out:
+ dt_trans_stop(env, lu2dt_dev(fld->lsf_obj->do_lu.lo_dev), th);
+ RETURN(rc);
}
int fld_index_init(struct lu_server_fld *fld,
{
struct dt_object *dt_obj;
struct lu_fid fid;
+ struct lu_attr attr;
+ struct dt_object_format dof;
int rc;
ENTRY;
- dt_obj = dt_store_open(env, dt, "", fld_index_name, &fid);
+ lu_local_obj_fid(&fid, FLD_INDEX_OID);
+
+ memset(&attr, 0, sizeof(attr));
+ attr.la_valid = LA_MODE;
+ attr.la_mode = S_IFREG | 0666;
+ dof.dof_type = DFT_INDEX;
+ dof.u.dof_idx.di_feat = &fld_index_features;
+
+ dt_obj = dt_find_or_create(env, dt, &fid, &dof, &attr);
if (!IS_ERR(dt_obj)) {
fld->lsf_obj = dt_obj;
rc = dt_obj->do_ops->do_index_try(env, dt_obj,
lu_object_put(env, &dt_obj->do_lu);
fld->lsf_obj = NULL;
}
- } else
- CERROR("%s: File \"%s\" is not an index!\n",
- fld->lsf_name, fld_index_name);
+ } else if (rc == -ERANGE) {
+ CWARN("%s: File \"%s\" doesn't support range lookup, "
+ "using stub. DNE and FIDs on OST will not work "
+ "with this backend\n",
+ fld->lsf_name, fld_index_name);
+
+ LASSERT(dt_obj->do_index_ops == NULL);
+ fld->lsf_no_range_lookup = 1;
+ rc = 0;
+ } else {
+ CERROR("%s: File \"%s\" is not index, rc %d!\n",
+ fld->lsf_name, fld_index_name, rc);
+ lu_object_put(env, &fld->lsf_obj->do_lu);
+ fld->lsf_obj = NULL;
+ }
} else {
git://git.whamcloud.com / fs / lustre-release.git / blobdiff