X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ffld%2Ffld_handler.c;h=c234179760aec0e9a293cc5a14fce8cbccee9136;hb=ac5044566b97c7f6881bed817c2ed9752a0c6d63;hp=5f902d2778c3f8538715867ac6fa96ceb83e88fa;hpb=f89a61cada93accbd02beee89f0610756ca595e9;p=fs%2Flustre-release.git diff --git a/lustre/fld/fld_handler.c b/lustre/fld/fld_handler.c index 5f902d2..c234179 100644 --- a/lustre/fld/fld_handler.c +++ b/lustre/fld/fld_handler.c @@ -1,280 +1,364 @@ -/* -*- MODE: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * lustre/fld/fld_handler.c - * FLD (Fids Location Database) + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * Copyright (C) 2006 Cluster File Systems, Inc. - * Author: Yury Umanets - * WangDi + * 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 file is part of the Lustre file system, http://www.lustre.org - * Lustre is a trademark of Cluster File Systems, Inc. + * 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 may have signed or agreed to another license before downloading - * this software. If so, you are bound by the terms and conditions - * of that agreement, and the following does not apply to you. See the - * LICENSE file included with this distribution for more information. + * 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 * - * If you did not agree to a different license, then this copy of Lustre - * is open source software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. + * 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. * - * In either case, Lustre 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 - * license text for more details. + * GPL HEADER END */ -#ifndef EXPORT_SYMTAB -# define EXPORT_SYMTAB -#endif +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, 2015, 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 + * Author: WangDi + * Author: Pravin Shelar + */ + #define DEBUG_SUBSYSTEM S_FLD -#ifdef __KERNEL__ -# include -# include -# include -# include -#else /* __KERNEL__ */ -# include -# include -#endif +#include +#include #include -#include -#include #include -#include - -#include +#include +#include #include +#include #include "fld_internal.h" -#ifdef __KERNEL__ - +/* context key constructor/destructor: fld_key_init, fld_key_fini */ LU_KEY_INIT_FINI(fld, struct fld_thread_info); -struct lu_context_key fld_thread_key = { - .lct_tags = LCT_MD_THREAD|LCT_DT_THREAD, - .lct_init = fld_key_init, - .lct_fini = fld_key_fini -}; - -cfs_proc_dir_entry_t *fld_type_proc_dir = NULL; +/* context key: fld_thread_key */ +/* MGS thread may create llog file causing FLD lookup */ +LU_CONTEXT_KEY_DEFINE(fld, LCT_MD_THREAD | LCT_DT_THREAD | LCT_MG_THREAD); -static int __init fld_mod_init(void) +int fld_server_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; + LU_CONTEXT_KEY_INIT(&fld_thread_key); + return lu_context_key_register(&fld_thread_key); } -static void __exit fld_mod_exit(void) +void fld_server_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; - } + lu_context_key_degister(&fld_thread_key); } -/* Insert index entry and update cache. */ -int fld_server_create(struct lu_server_fld *fld, - const struct lu_env *env, - seqno_t seq, mdsno_t mds) +int fld_declare_server_create(const struct lu_env *env, + struct lu_server_fld *fld, + const struct lu_seq_range *range, + struct thandle *th) { - int rc; - ENTRY; - - rc = fld_index_create(fld, env, seq, mds); - - if (rc == 0) { - /* - * Do not return result of calling fld_cache_insert() - * here. First of all because it may return -EEXISTS. Another - * reason is that, we do not want to stop proceeding even after - * cache errors. - */ - fld_cache_insert(fld->lsf_cache, seq, mds); - } + int rc; - RETURN(rc); + rc = fld_declare_index_create(env, fld, range, th); + RETURN(rc); } -EXPORT_SYMBOL(fld_server_create); +EXPORT_SYMBOL(fld_declare_server_create); -/* Delete index entry. */ -int fld_server_delete(struct lu_server_fld *fld, - const struct lu_env *env, - seqno_t seq) +/** + * 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, + const struct lu_seq_range *range, struct thandle *th) { - int rc; - ENTRY; + int rc; - fld_cache_delete(fld->lsf_cache, seq); - rc = fld_index_delete(fld, env, seq); - - RETURN(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_delete); +EXPORT_SYMBOL(fld_server_create); -/* Lookup mds by seq. */ -int fld_server_lookup(struct lu_server_fld *fld, - const struct lu_env *env, - seqno_t seq, mdsno_t *mds) +/** + * Extract index information from fld name like srv-fsname-MDT0000 + **/ +int fld_name_to_index(const char *name, __u32 *index) { - int rc; - ENTRY; - - /* Lookup it in the cache. */ - rc = fld_cache_lookup(fld->lsf_cache, seq, mds); - if (rc == 0) - RETURN(0); - - rc = fld_index_lookup(fld, env, seq, mds); - if (rc == 0) { - /* - * Do not return error here as well. See previous comment in - * same situation in function fld_server_create(). - */ - fld_cache_insert(fld->lsf_cache, seq, *mds); - } - RETURN(rc); + char *dash; + int rc; + ENTRY; + + CDEBUG(D_INFO, "get index from %s\n", name); + dash = strrchr(name, '-'); + if (dash == NULL) + RETURN(-EINVAL); + dash++; + rc = target_name2index(dash, index, NULL); + RETURN(rc); } -EXPORT_SYMBOL(fld_server_lookup); -static int fld_server_handle(struct lu_server_fld *fld, - const struct lu_env *env, - __u32 opc, struct md_fld *mf, - struct fld_thread_info *info) +/** + * Retrieve fldb entry from MDT0 and add to local FLDB and cache. + **/ +int fld_update_from_controller(const struct lu_env *env, + struct lu_server_fld *fld) { - int rc; - ENTRY; - - switch (opc) { - case FLD_CREATE: - rc = fld_server_create(fld, env, - mf->mf_seq, mf->mf_mds); - - /* Do not return -EEXIST error for resent case */ - if ((info->fti_flags & MSG_RESENT) && rc == -EEXIST) - rc = 0; - break; - case FLD_DELETE: - rc = fld_server_delete(fld, env, mf->mf_seq); - - /* Do not return -ENOENT error for resent case */ - if ((info->fti_flags & MSG_RESENT) && rc == -ENOENT) - rc = 0; - break; - case FLD_LOOKUP: - rc = fld_server_lookup(fld, env, - mf->mf_seq, &mf->mf_mds); - break; - default: - rc = -EINVAL; - break; - } - - CDEBUG(D_INFO, "%s: FLD req handle: error %d (opc: %d, seq: " - LPX64", mds: "LPU64")\n", fld->lsf_name, rc, opc, - mf->mf_seq, mf->mf_mds); - - RETURN(rc); + struct fld_thread_info *info; + struct lu_seq_range *range; + struct lu_seq_range_array *lsra; + __u32 index; + struct ptlrpc_request *req; + int rc; + int i; + ENTRY; + + /* Update only happens during initalization, i.e. local FLDB + * does not exist yet */ + if (!fld->lsf_new) + RETURN(0); + + rc = fld_name_to_index(fld->lsf_name, &index); + if (rc < 0) + RETURN(rc); + + /* No need update fldb for MDT0 */ + if (index == 0) + RETURN(0); + + info = lu_context_key_get(&env->le_ctx, &fld_thread_key); + LASSERT(info != NULL); + range = &info->fti_lrange; + memset(range, 0, sizeof(*range)); + range->lsr_index = index; + fld_range_set_mdt(range); + + do { + rc = fld_client_rpc(fld->lsf_control_exp, range, FLD_READ, + &req); + if (rc != 0 && rc != -EAGAIN) + GOTO(out, rc); + + LASSERT(req != NULL); + lsra = (struct lu_seq_range_array *)req_capsule_server_get( + &req->rq_pill, &RMF_GENERIC_DATA); + if (lsra == NULL) + GOTO(out, rc = -EPROTO); + + range_array_le_to_cpu(lsra, lsra); + for (i = 0; i < lsra->lsra_count; i++) { + int rc1; + + if (lsra->lsra_lsr[i].lsr_flags != LU_SEQ_RANGE_MDT) + GOTO(out, rc = -EINVAL); + + if (lsra->lsra_lsr[i].lsr_index != index) + GOTO(out, rc = -EINVAL); + + mutex_lock(&fld->lsf_lock); + rc1 = fld_insert_entry(env, fld, &lsra->lsra_lsr[i]); + mutex_unlock(&fld->lsf_lock); + + if (rc1 != 0) + GOTO(out, rc = rc1); + } + if (rc == -EAGAIN) + *range = lsra->lsra_lsr[lsra->lsra_count - 1]; + } while (rc == -EAGAIN); + + fld->lsf_new = 1; +out: + if (req != NULL) + ptlrpc_req_finished(req); + RETURN(rc); } +EXPORT_SYMBOL(fld_update_from_controller); -static int fld_req_handle(struct ptlrpc_request *req, - struct fld_thread_info *info) +/** + * Lookup sequece in local cache/fldb. + **/ +int fld_local_lookup(const struct lu_env *env, struct lu_server_fld *fld, + u64 seq, struct lu_seq_range *range) { - struct lu_site *site; - struct md_fld *in; - struct md_fld *out; - int rc; - __u32 *opc; - ENTRY; + 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); + } + RETURN(rc); +} +EXPORT_SYMBOL(fld_local_lookup); - site = req->rq_export->exp_obd->obd_lu_dev->ld_site; - - rc = req_capsule_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; - - rc = fld_server_handle(site->ls_server_fld, - req->rq_svc_thread->t_env, - *opc, out, info); - } else - rc = err_serious(-EPROTO); - - RETURN(rc); +/** + * Lookup MDT/OST 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, + u64 seq, struct lu_seq_range *range) +{ + __u32 index; + int rc; + ENTRY; + + rc = fld_local_lookup(env, fld, seq, range); + if (likely(rc == 0)) + RETURN(rc); + + rc = fld_name_to_index(fld->lsf_name, &index); + if (rc < 0) + RETURN(rc); + + if (index == 0 && rc == LDD_F_SV_TYPE_MDT) { + /* 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, -ENOENT); + RETURN(-ENOENT); + } else { + if (fld->lsf_control_exp == NULL) { + CERROR("%s: lookup "LPX64", but not connects to MDT0" + "yet: rc = %d.\n", fld->lsf_name, seq, -EIO); + RETURN(-EIO); + } + /* 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_QUERY, NULL); + if (rc == 0) + fld_cache_insert(fld->lsf_cache, range); + } + RETURN(rc); } +EXPORT_SYMBOL(fld_server_lookup); -static void fld_thread_info_init(struct ptlrpc_request *req, - struct fld_thread_info *info) +/** + * 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_handle_lookup(struct tgt_session_info *tsi) { - int i; + struct obd_export *exp = tsi->tsi_exp; + struct lu_site *site = exp->exp_obd->obd_lu_dev->ld_site; + struct lu_server_fld *fld; + struct lu_seq_range *in; + struct lu_seq_range *out; + int rc; - info->fti_flags = lustre_msg_get_flags(req->rq_reqmsg); + ENTRY; - /* Mark rep buffer as req-layout stuff expects. */ - for (i = 0; i < ARRAY_SIZE(info->fti_rep_buf_size); i++) - info->fti_rep_buf_size[i] = -1; + in = req_capsule_client_get(tsi->tsi_pill, &RMF_FLD_MDFLD); + if (in == NULL) + RETURN(err_serious(-EPROTO)); - /* Init request capsule. */ - req_capsule_init(&info->fti_pill, req, RCL_SERVER, - info->fti_rep_buf_size); + rc = req_capsule_server_pack(tsi->tsi_pill); + if (unlikely(rc != 0)) + RETURN(err_serious(rc)); - req_capsule_set(&info->fti_pill, &RQF_FLD_QUERY); -} + out = req_capsule_server_get(tsi->tsi_pill, &RMF_FLD_MDFLD); + if (out == NULL) + RETURN(err_serious(-EPROTO)); + *out = *in; -static void fld_thread_info_fini(struct fld_thread_info *info) -{ - req_capsule_fini(&info->fti_pill); + fld = lu_site2seq(site)->ss_server_fld; + + rc = fld_server_lookup(tsi->tsi_env, fld, in->lsr_start, out); + + CDEBUG(D_INFO, "%s: FLD req handle: error %d (range: "DRANGE")\n", + fld->lsf_name, rc, PRANGE(out)); + + RETURN(rc); } -static int fld_handle(struct ptlrpc_request *req) +static int fld_handle_read(struct tgt_session_info *tsi) { - struct fld_thread_info *info; - const struct lu_env *env; - int rc; + struct obd_export *exp = tsi->tsi_exp; + struct lu_site *site = exp->exp_obd->obd_lu_dev->ld_site; + struct lu_seq_range *in; + void *data; + int rc; + + ENTRY; + + req_capsule_set(tsi->tsi_pill, &RQF_FLD_READ); - env = req->rq_svc_thread->t_env; - LASSERT(env != NULL); + in = req_capsule_client_get(tsi->tsi_pill, &RMF_FLD_MDFLD); + if (in == NULL) + RETURN(err_serious(-EPROTO)); - info = lu_context_key_get(&env->le_ctx, &fld_thread_key); - LASSERT(info != NULL); + req_capsule_set_size(tsi->tsi_pill, &RMF_GENERIC_DATA, RCL_SERVER, + PAGE_CACHE_SIZE); - fld_thread_info_init(req, info); - rc = fld_req_handle(req, info); - fld_thread_info_fini(info); + rc = req_capsule_server_pack(tsi->tsi_pill); + if (unlikely(rc != 0)) + RETURN(err_serious(rc)); - return rc; + data = req_capsule_server_get(tsi->tsi_pill, &RMF_GENERIC_DATA); + + rc = fld_server_read(tsi->tsi_env, lu_site2seq(site)->ss_server_fld, + in, data, PAGE_CACHE_SIZE); + RETURN(rc); } -/* - * Entry point for handling FLD RPCs called from MDT. - */ -int fld_query(struct com_thread_info *info) +static int fld_handle_query(struct tgt_session_info *tsi) { - return fld_handle(info->cti_pill.rc_req); + int rc; + + ENTRY; + + req_capsule_set(tsi->tsi_pill, &RQF_FLD_QUERY); + + rc = fld_handle_lookup(tsi); + + RETURN(rc); } -EXPORT_SYMBOL(fld_query); /* * Returns true, if fid is local to this server node. @@ -284,41 +368,54 @@ EXPORT_SYMBOL(fld_query); * * fid_is_local() is supposed to be used in assertion checks only. */ -int fid_is_local(struct lu_site *site, const struct lu_fid *fid) +int fid_is_local(const struct lu_env *env, + struct lu_site *site, const struct lu_fid *fid) { - int result; - - result = 1; /* conservatively assume fid is local */ - if (site->ls_client_fld != NULL) { - mdsno_t mds; - int rc; - - rc = fld_cache_lookup(site->ls_client_fld->lcf_cache, - fid_seq(fid), &mds); - if (rc == 0) - result = (mds == site->ls_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); static void fld_server_proc_fini(struct lu_server_fld *fld); -#ifdef LPROCFS +#ifdef CONFIG_PROC_FS 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); - } - - RETURN(rc); + 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) @@ -343,68 +440,69 @@ static void fld_server_proc_fini(struct lu_server_fld *fld) } #endif -int fld_server_init(struct lu_server_fld *fld, struct dt_device *dt, - const char *prefix, const struct lu_env *env) +int fld_server_init(const struct lu_env *env, struct lu_server_fld *fld, + struct dt_device *dt, const char *prefix, int type) { - int cache_size, cache_threshold; - int rc; - ENTRY; + int cache_size, cache_threshold; + int rc; - snprintf(fld->lsf_name, sizeof(fld->lsf_name), - "srv-%s", prefix); + ENTRY; - cache_size = FLD_SERVER_CACHE_SIZE / - sizeof(struct fld_cache_entry); + snprintf(fld->lsf_name, sizeof(fld->lsf_name), "srv-%s", prefix); - cache_threshold = cache_size * - FLD_SERVER_CACHE_THRESHOLD / 100; + cache_size = FLD_SERVER_CACHE_SIZE / sizeof(struct fld_cache_entry); - fld->lsf_cache = fld_cache_init(fld->lsf_name, - FLD_SERVER_HTABLE_SIZE, - cache_size, cache_threshold); - if (IS_ERR(fld->lsf_cache)) { - rc = PTR_ERR(fld->lsf_cache); - fld->lsf_cache = NULL; - GOTO(out, rc); - } + cache_threshold = cache_size * FLD_SERVER_CACHE_THRESHOLD / 100; - rc = fld_index_init(fld, env, dt); - if (rc) - GOTO(out, rc); + 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; + RETURN(rc); + } - rc = fld_server_proc_init(fld); - if (rc) - GOTO(out, rc); + rc = fld_index_init(env, fld, dt, type); + if (rc) + GOTO(out_cache, rc); - EXIT; -out: - if (rc) - fld_server_fini(fld, env); - return rc; + rc = fld_server_proc_init(fld); + if (rc) + GOTO(out_index, rc); + + fld->lsf_control_exp = NULL; + fld->lsf_seq_lookup = fld_server_lookup; + + fld->lsf_seq_lookup = fld_server_lookup; + RETURN(0); +out_index: + fld_index_fini(env, fld); +out_cache: + fld_cache_fini(fld->lsf_cache); + 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); -MODULE_AUTHOR("Cluster File Systems, Inc. "); -MODULE_DESCRIPTION("Lustre FLD"); -MODULE_LICENSE("GPL"); - -cfs_module(mdd, "0.1.0", fld_mod_init, fld_mod_exit); -#endif +struct tgt_handler fld_handlers[] = { +TGT_FLD_HDL_VAR(0, FLD_QUERY, fld_handle_query), +TGT_FLD_HDL_VAR(0, FLD_READ, fld_handle_read), +}; +EXPORT_SYMBOL(fld_handlers);