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staging/lustre/fld: prepare FLD module for client server split

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Split FLD server from client, fld_{handler,index}.c are not compliled
unless server support is enabled.  Do not include dt_object.h or
lustre_mdt.h in lustre_fld.h and fix the minor breakages caused by
this elsewhere.  Generally cleanup includes in lustre/fld.

Signed-off-by: Liu Xuezhao <xuezhao.liu@emc.com>
Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-1330
Lustre-change: http://review.whamcloud.com/2675
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liu Xuezhao 2013-07-23 00:06:54 +08:00 committed by Greg Kroah-Hartman
parent 02524b200c
commit e62e5d9251
9 changed files with 37 additions and 1238 deletions
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2
drivers/staging/lustre/lustre/fld/Makefile
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@ -1,5 +1,5 @@
obj-$(CONFIG_LUSTRE_FS) += fld.o
fld-y := fld_handler.o fld_request.o fld_cache.o fld_index.o lproc_fld.o
fld-y := fld_request.o fld_cache.o lproc_fld.o
ccflags-y := -I$(src)/../include

447
drivers/staging/lustre/lustre/fld/fld_handler.c
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@ -1,447 +0,0 @@
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* 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.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/fld/fld_handler.c
*
* FLD (Fids Location Database)
*
* Author: Yury Umanets <umka@clusterfs.com>
* Author: WangDi <wangdi@clusterfs.com>
* Author: Pravin Shelar <pravin.shelar@sun.com>
*/
#define DEBUG_SUBSYSTEM S_FLD
# include <linux/libcfs/libcfs.h>
# include <linux/module.h>
# include <linux/jbd.h>
# include <asm/div64.h>
#include <obd.h>
#include <obd_class.h>
#include <lustre_ver.h>
#include <obd_support.h>
#include <lprocfs_status.h>
#include <md_object.h>
#include <lustre_fid.h>
#include <lustre_req_layout.h>
#include "fld_internal.h"
#include <lustre_fid.h>
/* context key constructor/destructor: fld_key_init, fld_key_fini */
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 | LCT_MG_THREAD);
proc_dir_entry_t *fld_type_proc_dir = NULL;
static int __init fld_mod_init(void)
{
fld_type_proc_dir = lprocfs_register(LUSTRE_FLD_NAME,
proc_lustre_root,
NULL, NULL);
if (IS_ERR(fld_type_proc_dir))
return PTR_ERR(fld_type_proc_dir);
LU_CONTEXT_KEY_INIT(&fld_thread_key);
lu_context_key_register(&fld_thread_key);
return 0;
}
static void __exit fld_mod_exit(void)
{
lu_context_key_degister(&fld_thread_key);
if (fld_type_proc_dir != NULL && !IS_ERR(fld_type_proc_dir)) {
lprocfs_remove(&fld_type_proc_dir);
fld_type_proc_dir = NULL;
}
}
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;
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.
*
* This function is called from the sequence allocator when a super-sequence
* is granted to a server.
*/
int fld_server_create(const struct lu_env *env, struct lu_server_fld *fld,
struct lu_seq_range *range, struct thandle *th)
{
int rc;
mutex_lock(&fld->lsf_lock);
rc = fld_index_create(env, fld, range, th);
mutex_unlock(&fld->lsf_lock);
RETURN(rc);
}
EXPORT_SYMBOL(fld_server_create);
/**
* Lookup mds by seq, returns a range for given seq.
*
* If that entry is not cached in fld cache, request is sent to super
* sequence controller node (MDT0). All other MDT[1...N] and client
* cache fld entries, but this cache is not persistent.
*/
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);
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(fld_range_type(erange) != fld_range_type(range) &&
!fld_range_is_any(range))) {
CERROR("%s: FLD cache range "DRANGE" does not match"
"requested flag %x: rc = %d\n", fld->lsf_name,
PRANGE(erange), range->lsr_flags, -EIO);
RETURN(-EIO);
}
*range = *erange;
RETURN(0);
}
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: Cannot find sequence "LPX64": rc = %d\n",
fld->lsf_name, seq, -EIO);
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);
/**
* All MDT server handle fld lookup operation. But only MDT0 has fld index.
* if entry is not found in cache we need to forward lookup request to MDT0
*/
static int fld_server_handle(struct lu_server_fld *fld,
const struct lu_env *env,
__u32 opc, struct lu_seq_range *range,
struct fld_thread_info *info)
{
int rc;
ENTRY;
switch (opc) {
case FLD_LOOKUP:
rc = fld_server_lookup(env, fld, range->lsr_start, range);
break;
default:
rc = -EINVAL;
break;
}
CDEBUG(D_INFO, "%s: FLD req handle: error %d (opc: %d, range: "
DRANGE"\n", fld->lsf_name, rc, opc, PRANGE(range));
RETURN(rc);
}
static int fld_req_handle(struct ptlrpc_request *req,
struct fld_thread_info *info)
{
struct obd_export *exp = req->rq_export;
struct lu_site *site = exp->exp_obd->obd_lu_dev->ld_site;
struct lu_seq_range *in;
struct lu_seq_range *out;
int rc;
__u32 *opc;
ENTRY;
rc = req_capsule_server_pack(info->fti_pill);
if (rc)
RETURN(err_serious(rc));
opc = req_capsule_client_get(info->fti_pill, &RMF_FLD_OPC);
if (opc != NULL) {
in = req_capsule_client_get(info->fti_pill, &RMF_FLD_MDFLD);
if (in == NULL)
RETURN(err_serious(-EPROTO));
out = req_capsule_server_get(info->fti_pill, &RMF_FLD_MDFLD);
if (out == NULL)
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. */
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)
fld_range_set_mdt(out);
rc = fld_server_handle(lu_site2seq(site)->ss_server_fld,
req->rq_svc_thread->t_env,
*opc, out, info);
} else {
rc = err_serious(-EPROTO);
}
RETURN(rc);
}
static void fld_thread_info_init(struct ptlrpc_request *req,
struct fld_thread_info *info)
{
info->fti_pill = &req->rq_pill;
/* Init request capsule. */
req_capsule_init(info->fti_pill, req, RCL_SERVER);
req_capsule_set(info->fti_pill, &RQF_FLD_QUERY);
}
static void fld_thread_info_fini(struct fld_thread_info *info)
{
req_capsule_fini(info->fti_pill);
}
static int fld_handle(struct ptlrpc_request *req)
{
struct fld_thread_info *info;
const struct lu_env *env;
int rc;
env = req->rq_svc_thread->t_env;
LASSERT(env != NULL);
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
LASSERT(info != NULL);
fld_thread_info_init(req, info);
rc = fld_req_handle(req, info);
fld_thread_info_fini(info);
return rc;
}
/*
* Entry point for handling FLD RPCs called from MDT.
*/
int fld_query(struct com_thread_info *info)
{
return fld_handle(info->cti_pill->rc_req);
}
EXPORT_SYMBOL(fld_query);
/*
* Returns true, if fid is local to this server node.
*
* WARNING: this function is *not* guaranteed to return false if fid is
* remote: it makes an educated conservative guess only.
*
* fid_is_local() is supposed to be used in assertion checks only.
*/
int fid_is_local(const struct lu_env *env,
struct lu_site *site, const struct lu_fid *fid)
{
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);
static void fld_server_proc_fini(struct lu_server_fld *fld);
#ifdef LPROCFS
static int fld_server_proc_init(struct lu_server_fld *fld)
{
int rc = 0;
ENTRY;
fld->lsf_proc_dir = lprocfs_register(fld->lsf_name,
fld_type_proc_dir,
fld_server_proc_list, fld);
if (IS_ERR(fld->lsf_proc_dir)) {
rc = PTR_ERR(fld->lsf_proc_dir);
RETURN(rc);
}
rc = lprocfs_seq_create(fld->lsf_proc_dir, "fldb", 0444,
&fld_proc_seq_fops, fld);
if (rc) {
lprocfs_remove(&fld->lsf_proc_dir);
fld->lsf_proc_dir = NULL;
}
RETURN(rc);
}
static void fld_server_proc_fini(struct lu_server_fld *fld)
{
ENTRY;
if (fld->lsf_proc_dir != NULL) {
if (!IS_ERR(fld->lsf_proc_dir))
lprocfs_remove(&fld->lsf_proc_dir);
fld->lsf_proc_dir = NULL;
}
EXIT;
}
#else
static int fld_server_proc_init(struct lu_server_fld *fld)
{
return 0;
}
static void fld_server_proc_fini(struct lu_server_fld *fld)
{
return;
}
#endif
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,
int type)
{
int cache_size, cache_threshold;
int rc;
ENTRY;
snprintf(fld->lsf_name, sizeof(fld->lsf_name),
"srv-%s", prefix);
cache_size = FLD_SERVER_CACHE_SIZE /
sizeof(struct fld_cache_entry);
cache_threshold = cache_size *
FLD_SERVER_CACHE_THRESHOLD / 100;
mutex_init(&fld->lsf_lock);
fld->lsf_cache = fld_cache_init(fld->lsf_name,
cache_size, cache_threshold);
if (IS_ERR(fld->lsf_cache)) {
rc = PTR_ERR(fld->lsf_cache);
fld->lsf_cache = NULL;
GOTO(out, rc);
}
if (!mds_node_id && type == LU_SEQ_RANGE_MDT) {
rc = fld_index_init(env, fld, dt);
if (rc)
GOTO(out, rc);
} else {
fld->lsf_obj = NULL;
}
rc = fld_server_proc_init(fld);
if (rc)
GOTO(out, rc);
fld->lsf_control_exp = NULL;
GOTO(out, rc);
out:
if (rc)
fld_server_fini(env, fld);
return rc;
}
EXPORT_SYMBOL(fld_server_init);
void fld_server_fini(const struct lu_env *env, struct lu_server_fld *fld)
{
ENTRY;
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;
}
EXIT;
}
EXPORT_SYMBOL(fld_server_fini);
MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre FLD");
MODULE_LICENSE("GPL");
cfs_module(mdd, "0.1.0", fld_mod_init, fld_mod_exit);

426
drivers/staging/lustre/lustre/fld/fld_index.c
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@ -1,426 +0,0 @@
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* 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.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/fld/fld_index.c
*
* Author: WangDi <wangdi@clusterfs.com>
* Author: Yury Umanets <umka@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_FLD
# include <linux/libcfs/libcfs.h>
# include <linux/module.h>
# include <linux/jbd.h>
#include <obd.h>
#include <obd_class.h>
#include <lustre_ver.h>
#include <obd_support.h>
#include <lprocfs_status.h>
#include <dt_object.h>
#include <md_object.h>
#include <lustre_mdc.h>
#include <lustre_fid.h>
#include <lustre_fld.h>
#include "fld_internal.h"
const char fld_index_name[] = "fld";
static const struct lu_seq_range IGIF_FLD_RANGE = {
.lsr_start = FID_SEQ_IGIF,
.lsr_end = FID_SEQ_IGIF_MAX + 1,
.lsr_index = 0,
.lsr_flags = LU_SEQ_RANGE_MDT
};
static const struct lu_seq_range DOT_LUSTRE_FLD_RANGE = {
.lsr_start = FID_SEQ_DOT_LUSTRE,
.lsr_end = FID_SEQ_DOT_LUSTRE + 1,
.lsr_index = 0,
.lsr_flags = LU_SEQ_RANGE_MDT
};
static const struct lu_seq_range ROOT_FLD_RANGE = {
.lsr_start = FID_SEQ_ROOT,
.lsr_end = FID_SEQ_ROOT + 1,
.lsr_index = 0,
.lsr_flags = LU_SEQ_RANGE_MDT
};
const struct dt_index_features fld_index_features = {
.dif_flags = DT_IND_UPDATE,
.dif_keysize_min = sizeof(seqno_t),
.dif_keysize_max = sizeof(seqno_t),
.dif_recsize_min = sizeof(struct lu_seq_range),
.dif_recsize_max = sizeof(struct lu_seq_range),
.dif_ptrsize = 4
};
extern struct lu_context_key fld_thread_key;
int fld_declare_index_create(const struct lu_env *env,
struct lu_server_fld *fld,
const struct lu_seq_range *new_range,
struct thandle *th)
{
struct lu_seq_range *tmp;
struct lu_seq_range *range;
struct fld_thread_info *info;
int rc = 0;
ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
range = &info->fti_lrange;
tmp = &info->fti_irange;
memset(range, 0, sizeof(*range));
rc = fld_index_lookup(env, fld, new_range->lsr_start, range);
if (rc == 0) {
/* In case of duplicate entry, the location must be same */
LASSERT((range_compare_loc(new_range, range) == 0));
GOTO(out, rc = -EEXIST);
}
if (rc != -ENOENT) {
CERROR("%s: lookup range "DRANGE" error: rc = %d\n",
fld->lsf_name, PRANGE(range), rc);
GOTO(out, rc);
}
/* Check for merge case, since the fld entry can only be increamental,
* so we will only check whether it can be merged from the left. */
if (new_range->lsr_start == range->lsr_end && range->lsr_end != 0 &&
range_compare_loc(new_range, range) == 0) {
range_cpu_to_be(tmp, range);
rc = dt_declare_delete(env, fld->lsf_obj,
(struct dt_key *)&tmp->lsr_start, th);
if (rc) {
CERROR("%s: declare record "DRANGE" failed: rc = %d\n",
fld->lsf_name, PRANGE(range), rc);
GOTO(out, rc);
}
memcpy(tmp, new_range, sizeof(*new_range));
tmp->lsr_start = range->lsr_start;
} else {
memcpy(tmp, new_range, sizeof(*new_range));
}
range_cpu_to_be(tmp, tmp);
rc = dt_declare_insert(env, fld->lsf_obj, (struct dt_rec *)tmp,
(struct dt_key *)&tmp->lsr_start, th);
out:
RETURN(rc);
}
/**
* insert range in fld store.
*
* \param range range to be inserted
* \param th transaction for this operation as it could compound
* transaction.
*
* \retval 0 success
* \retval -ve error
*
* The whole fld index insertion is protected by seq->lss_mutex (see
* seq_server_alloc_super), i.e. only one thread will access fldb each
* time, so we do not need worry the fld file and cache will being
* changed between declare and create.
* Because the fld entry can only be increamental, so we will only check
* whether it can be merged from the left.
**/
int fld_index_create(const struct lu_env *env, struct lu_server_fld *fld,
const struct lu_seq_range *new_range, struct thandle *th)
{
struct lu_seq_range *range;
struct lu_seq_range *tmp;
struct fld_thread_info *info;
int rc = 0;
int deleted = 0;
struct fld_cache_entry *flde;
ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
LASSERT(mutex_is_locked(&fld->lsf_lock));
range = &info->fti_lrange;
memset(range, 0, sizeof(*range));
tmp = &info->fti_irange;
rc = fld_index_lookup(env, fld, new_range->lsr_start, range);
if (rc != -ENOENT) {
rc = rc == 0 ? -EEXIST : rc;
GOTO(out, rc);
}
if (new_range->lsr_start == range->lsr_end && range->lsr_end != 0 &&
range_compare_loc(new_range, range) == 0) {
range_cpu_to_be(tmp, range);
rc = dt_delete(env, fld->lsf_obj,
(struct dt_key *)&tmp->lsr_start, th,
BYPASS_CAPA);
if (rc != 0)
GOTO(out, rc);
memcpy(tmp, new_range, sizeof(*new_range));
tmp->lsr_start = range->lsr_start;
deleted = 1;
} else {
memcpy(tmp, new_range, sizeof(*new_range));
}
range_cpu_to_be(tmp, tmp);
rc = dt_insert(env, fld->lsf_obj, (struct dt_rec *)tmp,
(struct dt_key *)&tmp->lsr_start, th, BYPASS_CAPA, 1);
if (rc != 0) {
CERROR("%s: insert range "DRANGE" failed: rc = %d\n",
fld->lsf_name, PRANGE(new_range), rc);
GOTO(out, rc);
}
flde = fld_cache_entry_create(new_range);
if (IS_ERR(flde))
GOTO(out, rc = PTR_ERR(flde));
write_lock(&fld->lsf_cache->fci_lock);
if (deleted)
fld_cache_delete_nolock(fld->lsf_cache, new_range);
rc = fld_cache_insert_nolock(fld->lsf_cache, flde);
write_unlock(&fld->lsf_cache->fci_lock);
if (rc)
OBD_FREE_PTR(flde);
out:
RETURN(rc);
}
/**
* 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.
*
* \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(const struct lu_env *env, struct lu_server_fld *fld,
seqno_t seq, struct lu_seq_range *range)
{
struct lu_seq_range *fld_rec;
struct fld_thread_info *info;
int rc;
ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
fld_rec = &info->fti_rec;
rc = fld_cache_lookup(fld->lsf_cache, seq, fld_rec);
if (rc == 0) {
*range = *fld_rec;
if (range_within(range, seq))
rc = 0;
else
rc = -ENOENT;
}
CDEBUG(D_INFO, "%s: lookup seq = "LPX64" range : "DRANGE" rc = %d\n",
fld->lsf_name, seq, PRANGE(range), rc);
RETURN(rc);
}
int fld_insert_entry(const struct lu_env *env,
struct lu_server_fld *fld,
const struct lu_seq_range *range)
{
struct thandle *th;
int rc;
ENTRY;
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(env, fld, range, th);
if (rc != 0) {
if (rc == -EEXIST)
rc = 0;
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(env, 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);
}
EXPORT_SYMBOL(fld_insert_entry);
static int fld_insert_special_entries(const struct lu_env *env,
struct lu_server_fld *fld)
{
int rc;
rc = fld_insert_entry(env, fld, &IGIF_FLD_RANGE);
if (rc != 0)
RETURN(rc);
rc = fld_insert_entry(env, fld, &DOT_LUSTRE_FLD_RANGE);
if (rc != 0)
RETURN(rc);
rc = fld_insert_entry(env, fld, &ROOT_FLD_RANGE);
RETURN(rc);
}
int fld_index_init(const struct lu_env *env, struct lu_server_fld *fld,
struct dt_device *dt)
{
struct dt_object *dt_obj = NULL;
struct lu_fid fid;
struct lu_attr *attr = NULL;
struct lu_seq_range *range = NULL;
struct fld_thread_info *info;
struct dt_object_format dof;
struct dt_it *it;
const struct dt_it_ops *iops;
int rc;
ENTRY;
info = lu_context_key_get(&env->le_ctx, &fld_thread_key);
LASSERT(info != NULL);
lu_local_obj_fid(&fid, FLD_INDEX_OID);
OBD_ALLOC_PTR(attr);
if (attr == NULL)
RETURN(-ENOMEM);
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)) {
rc = PTR_ERR(dt_obj);
CERROR("%s: Can't find \"%s\" obj %d\n", fld->lsf_name,
fld_index_name, rc);
dt_obj = NULL;
GOTO(out, rc);
}
fld->lsf_obj = dt_obj;
rc = dt_obj->do_ops->do_index_try(env, dt_obj, &fld_index_features);
if (rc != 0) {
CERROR("%s: File \"%s\" is not an index: rc = %d!\n",
fld->lsf_name, fld_index_name, rc);
GOTO(out, rc);
}
range = &info->fti_rec;
/* Load fld entry to cache */
iops = &dt_obj->do_index_ops->dio_it;
it = iops->init(env, dt_obj, 0, NULL);
if (IS_ERR(it))
GOTO(out, rc = PTR_ERR(it));
rc = iops->load(env, it, 0);
if (rc < 0)
GOTO(out_it_fini, rc);
if (rc > 0) {
/* Load FLD entry into server cache */
do {
rc = iops->rec(env, it, (struct dt_rec *)range, 0);
if (rc != 0)
GOTO(out_it_put, rc);
LASSERT(range != NULL);
range_be_to_cpu(range, range);
rc = fld_cache_insert(fld->lsf_cache, range);
if (rc != 0)
GOTO(out_it_put, rc);
rc = iops->next(env, it);
} while (rc == 0);
}
/* Note: fld_insert_entry will detect whether these
* special entries already exist inside FLDB */
mutex_lock(&fld->lsf_lock);
rc = fld_insert_special_entries(env, fld);
mutex_unlock(&fld->lsf_lock);
if (rc != 0) {
CERROR("%s: insert special entries failed!: rc = %d\n",
fld->lsf_name, rc);
GOTO(out_it_put, rc);
}
out_it_put:
iops->put(env, it);
out_it_fini:
iops->fini(env, it);
out:
if (attr != NULL)
OBD_FREE_PTR(attr);
if (rc != 0) {
if (dt_obj != NULL)
lu_object_put(env, &dt_obj->do_lu);
fld->lsf_obj = NULL;
}
RETURN(rc);
}
void fld_index_fini(const struct lu_env *env, struct lu_server_fld *fld)
{
ENTRY;
if (fld->lsf_obj != NULL) {
if (!IS_ERR(fld->lsf_obj))
lu_object_put(env, &fld->lsf_obj->do_lu);
fld->lsf_obj = NULL;
}
EXIT;
}

29
drivers/staging/lustre/lustre/fld/fld_internal.h
View File

@ -139,38 +139,10 @@ enum {
extern struct lu_fld_hash fld_hash[];
struct fld_thread_info {
struct req_capsule *fti_pill;
__u64 fti_key;
struct lu_seq_range fti_rec;
struct lu_seq_range fti_lrange;
struct lu_seq_range fti_irange;
};
extern struct lu_context_key fld_thread_key;
int fld_index_init(const struct lu_env *env, struct lu_server_fld *fld,
struct dt_device *dt);
void fld_index_fini(const struct lu_env *env, struct lu_server_fld *fld);
int fld_declare_index_create(const struct lu_env *env,
struct lu_server_fld *fld,
const struct lu_seq_range *new,
struct thandle *th);
int fld_index_create(const struct lu_env *env, struct lu_server_fld *fld,
const struct lu_seq_range *new, struct thandle *th);
int fld_index_lookup(const struct lu_env *env, struct lu_server_fld *fld,
seqno_t seq, struct lu_seq_range *range);
int fld_client_rpc(struct obd_export *exp,
struct lu_seq_range *range, __u32 fld_op);
#ifdef LPROCFS
extern struct lprocfs_vars fld_server_proc_list[];
extern struct lprocfs_vars fld_client_proc_list[];
#endif
@ -219,5 +191,4 @@ fld_target_name(struct lu_fld_target *tar)
}
extern proc_dir_entry_t *fld_type_proc_dir;
extern struct file_operations fld_proc_seq_fops;
#endif /* __FLD_INTERNAL_H */

40
drivers/staging/lustre/lustre/fld/fld_request.c
View File

@ -60,6 +60,8 @@
#include <lustre_mdc.h>
#include "fld_internal.h"
struct lu_context_key fld_thread_key;
/* TODO: these 3 functions are copies of flow-control code from mdc_lib.c
* It should be common thing. The same about mdc RPC lock */
static int fld_req_avail(struct client_obd *cli, struct mdc_cache_waiter *mcw)
@ -280,6 +282,8 @@ int fld_client_del_target(struct lu_client_fld *fld, __u64 idx)
EXPORT_SYMBOL(fld_client_del_target);
#ifdef LPROCFS
proc_dir_entry_t *fld_type_proc_dir = NULL;
static int fld_client_proc_init(struct lu_client_fld *fld)
{
int rc;
@ -496,12 +500,7 @@ int fld_client_lookup(struct lu_client_fld *fld, seqno_t seq, mdsno_t *mds,
res.lsr_start = seq;
fld_range_set_type(&res, flags);
if (target->ft_srv != NULL) {
LASSERT(env != NULL);
rc = fld_server_lookup(env, target->ft_srv, seq, &res);
} else {
rc = fld_client_rpc(target->ft_exp, &res, FLD_LOOKUP);
}
rc = fld_client_rpc(target->ft_exp, &res, FLD_LOOKUP);
if (rc == 0) {
*mds = res.lsr_index;
@ -517,3 +516,32 @@ void fld_client_flush(struct lu_client_fld *fld)
fld_cache_flush(fld->lcf_cache);
}
EXPORT_SYMBOL(fld_client_flush);
static int __init fld_mod_init(void)
{
fld_type_proc_dir = lprocfs_register(LUSTRE_FLD_NAME,
proc_lustre_root,
NULL, NULL);
if (IS_ERR(fld_type_proc_dir))
return PTR_ERR(fld_type_proc_dir);
LU_CONTEXT_KEY_INIT(&fld_thread_key);
lu_context_key_register(&fld_thread_key);
return 0;
}
static void __exit fld_mod_exit(void)
{
lu_context_key_degister(&fld_thread_key);
if (fld_type_proc_dir != NULL && !IS_ERR(fld_type_proc_dir)) {
lprocfs_remove(&fld_type_proc_dir);
fld_type_proc_dir = NULL;
}
}
MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre FLD");
MODULE_LICENSE("GPL");
module_init(fld_mod_init)
module_exit(fld_mod_exit)

205
drivers/staging/lustre/lustre/fld/lproc_fld.c
View File

@ -158,202 +158,6 @@ struct file_operations fld_proc_cache_flush_fops = {
.release = fld_proc_cache_flush_release,
};
struct fld_seq_param {
struct lu_env fsp_env;
struct dt_it *fsp_it;
struct lu_server_fld *fsp_fld;
unsigned int fsp_stop:1;
};
static void *fldb_seq_start(struct seq_file *p, loff_t *pos)
{
struct fld_seq_param *param = p->private;
struct lu_server_fld *fld;
struct dt_object *obj;
const struct dt_it_ops *iops;
if (param == NULL || param->fsp_stop)
return NULL;
fld = param->fsp_fld;
obj = fld->lsf_obj;
LASSERT(obj != NULL);
iops = &obj->do_index_ops->dio_it;
iops->load(&param->fsp_env, param->fsp_it, *pos);
*pos = be64_to_cpu(*(__u64 *)iops->key(&param->fsp_env, param->fsp_it));
return param;
}
static void fldb_seq_stop(struct seq_file *p, void *v)
{
struct fld_seq_param *param = p->private;
const struct dt_it_ops *iops;
struct lu_server_fld *fld;
struct dt_object *obj;
if (param == NULL)
return;
fld = param->fsp_fld;
obj = fld->lsf_obj;
LASSERT(obj != NULL);
iops = &obj->do_index_ops->dio_it;
iops->put(&param->fsp_env, param->fsp_it);
}
static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos)
{
struct fld_seq_param *param = p->private;
struct lu_server_fld *fld;
struct dt_object *obj;
const struct dt_it_ops *iops;
int rc;
if (param == NULL || param->fsp_stop)
return NULL;
fld = param->fsp_fld;
obj = fld->lsf_obj;
LASSERT(obj != NULL);
iops = &obj->do_index_ops->dio_it;
rc = iops->next(&param->fsp_env, param->fsp_it);
if (rc > 0) {
param->fsp_stop = 1;
return NULL;
}
*pos = be64_to_cpu(*(__u64 *)iops->key(&param->fsp_env, param->fsp_it));
return param;
}
static int fldb_seq_show(struct seq_file *p, void *v)
{
struct fld_seq_param *param = p->private;
struct lu_server_fld *fld;
struct dt_object *obj;
const struct dt_it_ops *iops;
struct fld_thread_info *info;
struct lu_seq_range *fld_rec;
int rc;
if (param == NULL || param->fsp_stop)
return 0;
fld = param->fsp_fld;
obj = fld->lsf_obj;
LASSERT(obj != NULL);
iops = &obj->do_index_ops->dio_it;
info = lu_context_key_get(&param->fsp_env.le_ctx,
&fld_thread_key);
fld_rec = &info->fti_rec;
rc = iops->rec(&param->fsp_env, param->fsp_it,
(struct dt_rec *)fld_rec, 0);
if (rc != 0) {
CERROR("%s:read record error: rc %d\n",
fld->lsf_name, rc);
} else if (fld_rec->lsr_start != 0) {
range_be_to_cpu(fld_rec, fld_rec);
rc = seq_printf(p, DRANGE"\n", PRANGE(fld_rec));
}
return rc;
}
struct seq_operations fldb_sops = {
.start = fldb_seq_start,
.stop = fldb_seq_stop,
.next = fldb_seq_next,
.show = fldb_seq_show,
};
static int fldb_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
struct lu_server_fld *fld = (struct lu_server_fld *)PDE_DATA(inode);
struct dt_object *obj;
const struct dt_it_ops *iops;
struct fld_seq_param *param = NULL;
int env_init = 0;
int rc;
rc = seq_open(file, &fldb_sops);
if (rc)
GOTO(out, rc);
obj = fld->lsf_obj;
if (obj == NULL) {
seq = file->private_data;
seq->private = NULL;
return 0;
}
OBD_ALLOC_PTR(param);
if (param == NULL)
GOTO(out, rc = -ENOMEM);
rc = lu_env_init(&param->fsp_env, LCT_MD_THREAD);
if (rc != 0)
GOTO(out, rc);
env_init = 1;
iops = &obj->do_index_ops->dio_it;
param->fsp_it = iops->init(&param->fsp_env, obj, 0, NULL);
if (IS_ERR(param->fsp_it))
GOTO(out, rc = PTR_ERR(param->fsp_it));
param->fsp_fld = fld;
param->fsp_stop = 0;
seq = file->private_data;
seq->private = param;
out:
if (rc != 0) {
if (env_init == 1)
lu_env_fini(&param->fsp_env);
if (param != NULL)
OBD_FREE_PTR(param);
}
return rc;
}
static int fldb_seq_release(struct inode *inode, struct file *file)
{
struct seq_file *seq = file->private_data;
struct fld_seq_param *param;
struct lu_server_fld *fld;
struct dt_object *obj;
const struct dt_it_ops *iops;
param = seq->private;
if (param == NULL) {
lprocfs_seq_release(inode, file);
return 0;
}
fld = param->fsp_fld;
obj = fld->lsf_obj;
LASSERT(obj != NULL);
iops = &obj->do_index_ops->dio_it;
LASSERT(iops != NULL);
LASSERT(obj != NULL);
LASSERT(param->fsp_it != NULL);
iops->fini(&param->fsp_env, param->fsp_it);
lu_env_fini(&param->fsp_env);
OBD_FREE_PTR(param);
lprocfs_seq_release(inode, file);
return 0;
}
struct lprocfs_vars fld_server_proc_list[] = {
{ NULL }};
LPROC_SEQ_FOPS_RO(fld_proc_targets);
LPROC_SEQ_FOPS(fld_proc_hash);
@ -363,11 +167,4 @@ struct lprocfs_vars fld_client_proc_list[] = {
{ "cache_flush", &fld_proc_cache_flush_fops },
{ NULL }};
struct file_operations fld_proc_seq_fops = {
.owner = THIS_MODULE,
.open = fldb_seq_open,
.read = seq_read,
.release = fldb_seq_release,
};
#endif
#endif /* LPROCFS */

41
drivers/staging/lustre/lustre/include/lustre_fld.h
View File

@ -43,9 +43,6 @@
*/
#include <lustre/lustre_idl.h>
#include <lustre_mdt.h>
#include <dt_object.h>
#include <linux/libcfs/libcfs.h>
struct lu_client_fld;
@ -129,47 +126,9 @@ struct lu_client_fld {
* Client fld proc entry name. */
char lcf_name[80];
const struct lu_context *lcf_ctx;
int lcf_flags;
};
/**
* number of blocks to reserve for particular operations. Should be function of
* ... something. Stub for now.
*/
enum {
/* one insert operation can involve two delete and one insert */
FLD_TXN_INDEX_INSERT_CREDITS = 60,
FLD_TXN_INDEX_DELETE_CREDITS = 20,
};
int fld_query(struct com_thread_info *info);
/* Server methods */
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,
int type);
void fld_server_fini(const struct lu_env *env, struct lu_server_fld *fld);
int fld_declare_server_create(const struct lu_env *env,
struct lu_server_fld *fld,
struct lu_seq_range *new,
struct thandle *th);
int fld_server_create(const struct lu_env *env,
struct lu_server_fld *fld,
struct lu_seq_range *add_range,
struct thandle *th);
int fld_insert_entry(const struct lu_env *env,
struct lu_server_fld *fld,
const 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);
/* Client methods */
int fld_client_init(struct lu_client_fld *fld,
const char *prefix, int hash);

84
drivers/staging/lustre/lustre/include/lustre_mdt.h
View File

@ -1,84 +0,0 @@
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* 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.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef __LINUX_MDT_H
#define __LINUX_MDT_H
/** \defgroup mdt mdt
*
* @{
*/
#include <lustre/lustre_idl.h>
#include <lustre_req_layout.h>
#include <md_object.h>
#include <dt_object.h>
#include <linux/libcfs/libcfs.h>
/*
* Common thread info for mdt, seq and fld
*/
struct com_thread_info {
/*
* for req-layout interface.
*/
struct req_capsule *cti_pill;
};
enum {
ESERIOUS = 0x0001000
};
static inline int err_serious(int rc)
{
LASSERT(rc < 0);
LASSERT(-rc < ESERIOUS);
return -(-rc | ESERIOUS);
}
static inline int clear_serious(int rc)
{
if (rc < 0)
rc = -(-rc & ~ESERIOUS);
return rc;
}
static inline int is_serious(int rc)
{
return (rc < 0 && -rc & ESERIOUS);
}
/** @} mdt */
#endif

1
drivers/staging/lustre/lustre/obdecho/echo_client.c
View File

@ -43,6 +43,7 @@
#include <lustre_debug.h>
#include <lprocfs_status.h>
#include <cl_object.h>
#include <md_object.h>
#include <lustre_fid.h>
#include <lustre_acl.h>
#include <lustre_net.h>