X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ffld%2Ffld_handler.c;h=d54a21aef2b74d5f1e772bf374de39c47ef92ca1;hb=e0702769f267dd009a6287bbc9da2760079a101d;hp=e44195901a80bcefc799b4ae29804fdebee21b3d;hpb=08aa217ce49aba1ded52e0f7adb8a607035123fd;p=fs%2Flustre-release.git diff --git a/lustre/fld/fld_handler.c b/lustre/fld/fld_handler.c index e441959..d54a21a 100644 --- a/lustre/fld/fld_handler.c +++ b/lustre/fld/fld_handler.c @@ -44,63 +44,39 @@ #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 #include "fld_internal.h" -#include - -#ifdef __KERNEL__ /* 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); - -cfs_proc_dir_entry_t *fld_type_proc_dir = NULL; +/* 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); } int fld_declare_server_create(const struct lu_env *env, struct lu_server_fld *fld, - struct lu_seq_range *range, + const struct lu_seq_range *range, struct thandle *th) { int rc; @@ -117,7 +93,7 @@ EXPORT_SYMBOL(fld_declare_server_create); * 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) + const struct lu_seq_range *range, struct thandle *th) { int rc; @@ -136,43 +112,49 @@ EXPORT_SYMBOL(fld_server_create); * 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; + 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; - - /* 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)) { - CERROR("FLD cache found a range "DRANGE" doesn't " - "match the requested flag %x\n", - PRANGE(erange), range->lsr_flags); - RETURN(-EIO); - } - *range = *erange; - RETURN(0); - } + 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: Can not found the seq "LPX64"\n", - fld->lsf_name, seq); + CERROR("%s: Cannot find sequence "LPX64": rc = %d\n", + fld->lsf_name, seq, -EIO); RETURN(-EIO); } else { - LASSERT(fld->lsf_control_exp); + 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_LOOKUP); if (rc == 0) @@ -186,113 +168,66 @@ 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) + const struct lu_env *env, + __u32 opc, struct lu_seq_range *range) { - 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); - -} + int 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; + 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. - * 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); - } else - rc = err_serious(-EPROTO); - - RETURN(rc); -} + switch (opc) { + case FLD_LOOKUP: + rc = fld_server_lookup(env, fld, range->lsr_start, range); + break; + default: + rc = -EINVAL; + break; + } -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); -} + CDEBUG(D_INFO, "%s: FLD req handle: error %d (opc: %d, range: " + DRANGE"\n", fld->lsf_name, rc, opc, PRANGE(range)); -static void fld_thread_info_fini(struct fld_thread_info *info) -{ - req_capsule_fini(info->fti_pill); + RETURN(rc); } -static int fld_handle(struct ptlrpc_request *req) +static int fld_handler(struct tgt_session_info *tsi) { - 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); + struct obd_export *exp = tsi->tsi_exp; + 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; - fld_thread_info_init(req, info); - rc = fld_req_handle(req, info); - fld_thread_info_fini(info); + ENTRY; - return rc; -} + opc = req_capsule_client_get(tsi->tsi_pill, &RMF_FLD_OPC); + if (opc != NULL) { + in = req_capsule_client_get(tsi->tsi_pill, &RMF_FLD_MDFLD); + if (in == NULL) + RETURN(err_serious(-EPROTO)); + out = req_capsule_server_get(tsi->tsi_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, + tsi->tsi_env, *opc, out); + } else { + rc = err_serious(-EPROTO); + } -/* - * 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); + RETURN(rc); } -EXPORT_SYMBOL(fld_query); /* * Returns true, if fid is local to this server node. @@ -305,26 +240,26 @@ EXPORT_SYMBOL(fld_query); 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; + 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; + 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; + 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(msite->ms_client_fld->lcf_cache, - fid_seq(fid), range); - if (rc == 0) - result = (range->lsr_index == msite->ms_node_id); - } - return result; + 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); @@ -377,55 +312,49 @@ static void fld_server_proc_fini(struct lu_server_fld *fld) #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) + struct dt_device *dt, const char *prefix, int mds_node_id, + int type) { - int cache_size, cache_threshold; - struct lu_seq_range range; - int rc; - ENTRY; + int cache_size, cache_threshold; + int rc; + + ENTRY; - snprintf(fld->lsf_name, sizeof(fld->lsf_name), - "srv-%s", prefix); + snprintf(fld->lsf_name, sizeof(fld->lsf_name), + "srv-%s", prefix); - cache_size = FLD_SERVER_CACHE_SIZE / - sizeof(struct fld_cache_entry); + cache_size = FLD_SERVER_CACHE_SIZE / sizeof(struct fld_cache_entry); - cache_threshold = cache_size * - FLD_SERVER_CACHE_THRESHOLD / 100; + 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); - } + 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); + } - if (!mds_node_id) { + 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); + if (rc) + GOTO(out_cache, rc); + } else { + fld->lsf_obj = NULL; + } - fld->lsf_control_exp = NULL; + rc = fld_server_proc_init(fld); + if (rc) + GOTO(out_index, rc); - /* 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); + fld->lsf_control_exp = NULL; - EXIT; -out: - if (rc) - fld_server_fini(env, fld); + RETURN(0); +out_index: + fld_index_fini(env, fld); +out_cache: + fld_cache_fini(fld->lsf_cache); return rc; } EXPORT_SYMBOL(fld_server_init); @@ -447,9 +376,7 @@ void fld_server_fini(const struct lu_env *env, struct lu_server_fld *fld) } EXPORT_SYMBOL(fld_server_fini); -MODULE_AUTHOR("Sun Microsystems, 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(HABEO_REFERO, FLD_QUERY, fld_handler), +}; +EXPORT_SYMBOL(fld_handlers);