* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
LU_KEY_INIT_FINI(fld, struct fld_thread_info);
/* context key: fld_thread_key */
-LU_CONTEXT_KEY_DEFINE(fld, LCT_MD_THREAD|LCT_DT_THREAD);
+LU_CONTEXT_KEY_DEFINE(fld, LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD);
cfs_proc_dir_entry_t *fld_type_proc_dir = NULL;
}
}
-int fld_declare_server_create(struct lu_server_fld *fld,
- const struct lu_env *env,
- struct thandle *th)
+int fld_declare_server_create(const struct lu_env *env,
+ struct lu_server_fld *fld,
+ struct lu_seq_range *range,
+ struct thandle *th)
{
- int rc;
-
- ENTRY;
-
- if (fld->lsf_no_range_lookup) {
- /* Stub for underlying FS which can't lookup ranges */
- return 0;
- }
+ int rc;
- /* for ldiskfs OSD it's enough to declare operation with any ops
- * with DMU we'll probably need to specify exact key/value */
- rc = dt_declare_delete(env, fld->lsf_obj, NULL, th);
- if (rc)
- GOTO(out, rc);
- rc = dt_declare_delete(env, fld->lsf_obj, NULL, th);
- if (rc)
- GOTO(out, rc);
- rc = dt_declare_insert(env, fld->lsf_obj, NULL, NULL, th);
-out:
+ rc = fld_declare_index_create(env, fld, range, th);
RETURN(rc);
}
EXPORT_SYMBOL(fld_declare_server_create);
/**
* Insert FLD index entry and update FLD cache.
*
- * First it try to merge given range with existing range then update
- * FLD index and FLD cache accordingly. FLD index consistency is maintained
- * by this function.
* This function is called from the sequence allocator when a super-sequence
* is granted to a server.
*/
-
-int fld_server_create(struct lu_server_fld *fld,
- const struct lu_env *env,
- struct lu_seq_range *add_range,
- struct thandle *th)
+int fld_server_create(const struct lu_env *env, struct lu_server_fld *fld,
+ struct lu_seq_range *range, struct thandle *th)
{
- struct lu_seq_range *erange;
- struct lu_seq_range *new;
- struct fld_thread_info *info;
- int rc = 0;
- int do_merge=0;
-
- ENTRY;
+ int rc;
- info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
mutex_lock(&fld->lsf_lock);
-
- erange = &info->fti_lrange;
- new = &info->fti_irange;
- *new = *add_range;
-
- /* STEP 1: try to merge with previous range */
- rc = fld_index_lookup(fld, env, new->lsr_start, erange);
- if (rc == 0) {
- /* in case of range overlap, the location must be same */
- if (range_compare_loc(new, erange) != 0) {
- CERROR("the start of given range "DRANGE" conflict to"
- "an existing range "DRANGE"\n",
- PRANGE(new), PRANGE(erange));
- GOTO(out, rc = -EIO);
- }
-
- if (new->lsr_end < erange->lsr_end)
- GOTO(out, rc);
- do_merge = 1;
- } else if (rc == -ENOENT) {
- /* check for merge case: optimizes for single mds lustre.
- * As entry does not exist, returned entry must be left side
- * entry compared to start of new range (ref dio_lookup()).
- * So try to merge from left.
- */
- if (new->lsr_start == erange->lsr_end &&
- range_compare_loc(new, erange) == 0)
- do_merge = 1;
- } else {
- /* no overlap allowed in fld, so failure in lookup is error */
- GOTO(out, rc);
- }
-
- if (do_merge) {
- /* new range will be merged with the existing one.
- * delete this range at first. */
- rc = fld_index_delete(fld, env, erange, th);
- if (rc != 0)
- GOTO(out, rc);
-
- new->lsr_start = min(erange->lsr_start, new->lsr_start);
- new->lsr_end = max(erange->lsr_end, new->lsr_end);
- do_merge = 0;
- }
-
- /* STEP 2: try to merge with next range */
- rc = fld_index_lookup(fld, env, new->lsr_end, erange);
- if (rc == 0) {
- /* found a matched range, meaning we're either
- * overlapping or ajacent, must merge with it. */
- do_merge = 1;
- } else if (rc == -ENOENT) {
- /* this range is left of new range end point */
- LASSERT(erange->lsr_end <= new->lsr_end);
- /*
- * the found left range must be either:
- * 1. withing new range.
- * 2. left of new range (no overlapping).
- * because if they're partly overlapping, the STEP 1 must have
- * been removed this range.
- */
- LASSERTF(erange->lsr_start > new->lsr_start ||
- erange->lsr_end < new->lsr_start ||
- (erange->lsr_end == new->lsr_start &&
- range_compare_loc(new, erange) != 0),
- "left "DRANGE", new "DRANGE"\n",
- PRANGE(erange), PRANGE(new));
-
- /* if it's within the new range, merge it */
- if (erange->lsr_start > new->lsr_start)
- do_merge = 1;
- } else {
- GOTO(out, rc);
- }
-
- if (do_merge) {
- if (range_compare_loc(new, erange) != 0) {
- CERROR("the end of given range "DRANGE" overlaps "
- "with an existing range "DRANGE"\n",
- PRANGE(new), PRANGE(erange));
- GOTO(out, rc = -EIO);
- }
-
- /* merge with next range */
- rc = fld_index_delete(fld, env, erange, th);
- if (rc != 0)
- GOTO(out, rc);
-
- new->lsr_start = min(erange->lsr_start, new->lsr_start);
- new->lsr_end = max(erange->lsr_end, new->lsr_end);
- }
-
- /* now update fld entry. */
- rc = fld_index_create(fld, env, new, th);
-
- LASSERT(rc != -EEXIST);
-out:
- if (rc == 0)
- fld_cache_insert(fld->lsf_cache, new);
-
+ rc = fld_index_create(env, fld, range, th);
mutex_unlock(&fld->lsf_lock);
- CDEBUG((rc != 0 ? D_ERROR : D_INFO),
- "%s: FLD create: given range : "DRANGE
- "after merge "DRANGE" rc = %d \n", fld->lsf_name,
- PRANGE(add_range), PRANGE(new), rc);
-
- RETURN(rc);
+ RETURN(rc);
}
EXPORT_SYMBOL(fld_server_create);
* cache fld entries, but this cache is not persistent.
*/
-int fld_server_lookup(struct lu_server_fld *fld,
- const struct lu_env *env,
- seqno_t seq, struct lu_seq_range *range)
+int fld_server_lookup(const struct lu_env *env, struct lu_server_fld *fld,
+ seqno_t seq, struct lu_seq_range *range)
{
struct lu_seq_range *erange;
struct fld_thread_info *info;
int rc;
ENTRY;
- info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
- erange = &info->fti_lrange;
+ info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
+ LASSERT(info != NULL);
+ erange = &info->fti_lrange;
/* Lookup it in the cache. */
rc = fld_cache_lookup(fld->lsf_cache, seq, erange);
if (rc == 0) {
- if (unlikely(erange->lsr_flags != range->lsr_flags)) {
+ if (unlikely(erange->lsr_flags != range->lsr_flags) &&
+ range->lsr_flags != -1) {
CERROR("FLD cache found a range "DRANGE" doesn't "
"match the requested flag %x\n",
PRANGE(erange), range->lsr_flags);
RETURN(0);
}
- if (fld->lsf_obj) {
- rc = fld_index_lookup(fld, env, seq, erange);
- if (rc == 0) {
- if (unlikely(erange->lsr_flags != range->lsr_flags)) {
- CERROR("FLD found a range "DRANGE" doesn't "
- "match the requested flag %x\n",
- PRANGE(erange), range->lsr_flags);
- RETURN(-EIO);
- }
- *range = *erange;
- }
- } else {
- LASSERT(fld->lsf_control_exp);
- /* send request to mdt0 i.e. super seq. controller.
- * This is temporary solution, long term solution is fld
- * replication on all mdt servers.
- */
- rc = fld_client_rpc(fld->lsf_control_exp,
- range, FLD_LOOKUP);
- }
-
- if (rc == 0)
- fld_cache_insert(fld->lsf_cache, range);
-
- RETURN(rc);
+ if (fld->lsf_obj) {
+ /* On server side, all entries should be in cache.
+ * If we can not find it in cache, just return error */
+ CERROR("%s: Can not found the seq "LPX64"\n",
+ fld->lsf_name, seq);
+ RETURN(-EIO);
+ } else {
+ LASSERT(fld->lsf_control_exp);
+ /* send request to mdt0 i.e. super seq. controller.
+ * This is temporary solution, long term solution is fld
+ * replication on all mdt servers.
+ */
+ range->lsr_start = seq;
+ rc = fld_client_rpc(fld->lsf_control_exp,
+ range, FLD_LOOKUP);
+ if (rc == 0)
+ fld_cache_insert(fld->lsf_cache, range);
+ }
+ RETURN(rc);
}
EXPORT_SYMBOL(fld_server_lookup);
switch (opc) {
case FLD_LOOKUP:
- rc = fld_server_lookup(fld, env,
- range->lsr_start, range);
+ rc = fld_server_lookup(env, fld, range->lsr_start, range);
break;
default:
rc = -EINVAL;
RETURN(err_serious(-EPROTO));
*out = *in;
- /* For old 2.0 client, the 'lsr_flags' is uninitialized.
- * Set it as 'LU_SEQ_RANGE_MDT' by default.
- * Old 2.0 liblustre client cannot talk with new 2.1 server. */
- if (!(exp->exp_connect_flags & OBD_CONNECT_64BITHASH) &&
- !exp->exp_libclient)
- out->lsr_flags = LU_SEQ_RANGE_MDT;
-
- rc = fld_server_handle(lu_site2md(site)->ms_server_fld,
- req->rq_svc_thread->t_env,
- *opc, out, info);
+ /* For old 2.0 client, the 'lsr_flags' is uninitialized.
+ * Set it as 'LU_SEQ_RANGE_MDT' by default. */
+ if (!(exp_connect_flags(exp) & OBD_CONNECT_64BITHASH) &&
+ !(exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS) &&
+ !(exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT) &&
+ !exp->exp_libclient)
+ out->lsr_flags = LU_SEQ_RANGE_MDT;
+
+ rc = fld_server_handle(lu_site2seq(site)->ss_server_fld,
+ req->rq_svc_thread->t_env,
+ *opc, out, info);
} else
rc = err_serious(-EPROTO);
int fid_is_local(const struct lu_env *env,
struct lu_site *site, const struct lu_fid *fid)
{
- int result;
- struct md_site *msite;
- struct lu_seq_range *range;
- struct fld_thread_info *info;
- ENTRY;
-
- info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
- range = &info->fti_lrange;
-
- result = 1; /* conservatively assume fid is local */
- msite = lu_site2md(site);
- if (msite->ms_client_fld != NULL) {
- int rc;
-
- rc = fld_cache_lookup(msite->ms_client_fld->lcf_cache,
- fid_seq(fid), range);
- if (rc == 0)
- result = (range->lsr_index == msite->ms_node_id);
- }
- return result;
+ int result;
+ struct seq_server_site *ss_site;
+ struct lu_seq_range *range;
+ struct fld_thread_info *info;
+ ENTRY;
+
+ info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
+ range = &info->fti_lrange;
+
+ result = 1; /* conservatively assume fid is local */
+ ss_site = lu_site2seq(site);
+ if (ss_site->ss_client_fld != NULL) {
+ int rc;
+
+ rc = fld_cache_lookup(ss_site->ss_client_fld->lcf_cache,
+ fid_seq(fid), range);
+ if (rc == 0)
+ result = (range->lsr_index == ss_site->ss_node_id);
+ }
+ return result;
}
EXPORT_SYMBOL(fid_is_local);
}
#endif
-int fld_server_init(struct lu_server_fld *fld, struct dt_device *dt,
- const char *prefix, const struct lu_env *env,
- int mds_node_id)
+int fld_server_init(const struct lu_env *env, struct lu_server_fld *fld,
+ struct dt_device *dt, const char *prefix, int mds_node_id,
+ __u32 lsr_flags)
{
int cache_size, cache_threshold;
struct lu_seq_range range;
GOTO(out, rc);
}
- if (!mds_node_id) {
- rc = fld_index_init(fld, env, dt);
+ if (!mds_node_id && lsr_flags == LU_SEQ_RANGE_MDT) {
+ rc = fld_index_init(env, fld, dt);
if (rc)
GOTO(out, rc);
} else
fld->lsf_control_exp = NULL;
- /* Insert reserved sequence number of ".lustre" into fld cache. */
- range.lsr_start = FID_SEQ_DOT_LUSTRE;
- range.lsr_end = FID_SEQ_DOT_LUSTRE + 1;
- range.lsr_index = 0;
- range.lsr_flags = LU_SEQ_RANGE_MDT;
- fld_cache_insert(fld->lsf_cache, &range);
-
+ if (lsr_flags == LU_SEQ_RANGE_MDT) {
+ /* Insert reserved sequence of "ROOT" and ".lustre"
+ * into fld cache. */
+ range.lsr_start = FID_SEQ_LOCAL_FILE;
+ range.lsr_end = FID_SEQ_DOT_LUSTRE + 1;
+ range.lsr_index = 0;
+ range.lsr_flags = lsr_flags;
+ fld_cache_insert(fld->lsf_cache, &range);
+ }
EXIT;
out:
- if (rc)
- fld_server_fini(fld, env);
- return rc;
+ if (rc)
+ fld_server_fini(env, fld);
+ return rc;
}
EXPORT_SYMBOL(fld_server_init);
-void fld_server_fini(struct lu_server_fld *fld,
- const struct lu_env *env)
+void fld_server_fini(const struct lu_env *env, struct lu_server_fld *fld)
{
- ENTRY;
+ ENTRY;
- fld_server_proc_fini(fld);
- fld_index_fini(fld, env);
+ fld_server_proc_fini(fld);
+ fld_index_fini(env, fld);
- if (fld->lsf_cache != NULL) {
- if (!IS_ERR(fld->lsf_cache))
- fld_cache_fini(fld->lsf_cache);
- fld->lsf_cache = NULL;
- }
+ if (fld->lsf_cache != NULL) {
+ if (!IS_ERR(fld->lsf_cache))
+ fld_cache_fini(fld->lsf_cache);
+ fld->lsf_cache = NULL;
+ }
- EXIT;
+ EXIT;
}
EXPORT_SYMBOL(fld_server_fini);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff