X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Ffid%2Ffid_handler.c;h=537ea6d152d2bc8254a16f6ff1504a79e4ee53e6;hp=d4c2611befdcd70dcc27a24c7482368a04042629;hb=cc6ef11d2f972ebc440013bddda87a536a09750c;hpb=9b922184db95a042f465612baeb5924f19d2ae7a diff --git a/lustre/fid/fid_handler.c b/lustre/fid/fid_handler.c index d4c2611..537ea6d 100644 --- a/lustre/fid/fid_handler.c +++ b/lustre/fid/fid_handler.c @@ -15,11 +15,7 @@ * * 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. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ @@ -27,7 +23,7 @@ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2012, Intel Corporation. + * Copyright (c) 2011, 2015, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -42,27 +38,21 @@ #define DEBUG_SUBSYSTEM S_FID -#ifdef __KERNEL__ -# include -# include -#else /* __KERNEL__ */ -# include -#endif - +#include +#include #include #include #include -#include #include #include #include #include "fid_internal.h" -#ifdef __KERNEL__ +static void seq_server_proc_fini(struct lu_server_seq *seq); + /* Assigns client to sequence controller node. */ -int seq_server_set_cli(struct lu_server_seq *seq, - struct lu_client_seq *cli, - const struct lu_env *env) +int seq_server_set_cli(const struct lu_env *env, struct lu_server_seq *seq, + struct lu_client_seq *cli) { int rc = 0; ENTRY; @@ -73,18 +63,17 @@ int seq_server_set_cli(struct lu_server_seq *seq, */ mutex_lock(&seq->lss_mutex); - if (cli == NULL) { - CDEBUG(D_INFO, "%s: Detached sequence client %s\n", - seq->lss_name, cli->lcs_name); - seq->lss_cli = cli; - GOTO(out_up, rc = 0); - } + if (cli == NULL) { + CDEBUG(D_INFO, "%s: Detached sequence client\n", seq->lss_name); + seq->lss_cli = NULL; + GOTO(out_up, rc = 0); + } - if (seq->lss_cli != NULL) { - CERROR("%s: Sequence controller is already " - "assigned\n", seq->lss_name); - GOTO(out_up, rc = -EINVAL); - } + if (seq->lss_cli != NULL) { + CDEBUG(D_HA, "%s: Sequence controller is already " + "assigned\n", seq->lss_name); + GOTO(out_up, rc = -EEXIST); + } CDEBUG(D_INFO, "%s: Attached sequence controller %s\n", seq->lss_name, cli->lcs_name); @@ -101,13 +90,13 @@ EXPORT_SYMBOL(seq_server_set_cli); * allocate \a w units of sequence from range \a from. */ static inline void range_alloc(struct lu_seq_range *to, - struct lu_seq_range *from, - __u64 width) + struct lu_seq_range *from, + __u64 width) { - width = min(range_space(from), width); - to->lsr_start = from->lsr_start; - to->lsr_end = from->lsr_start + width; - from->lsr_start += width; + width = min(lu_seq_range_space(from), width); + to->lsr_start = from->lsr_start; + to->lsr_end = from->lsr_start + width; + from->lsr_start += width; } /** @@ -125,9 +114,9 @@ static int __seq_server_alloc_super(struct lu_server_seq *seq, int rc; ENTRY; - LASSERT(range_is_sane(space)); + LASSERT(lu_seq_range_is_sane(space)); - if (range_is_exhausted(space)) { + if (lu_seq_range_is_exhausted(space)) { CERROR("%s: Sequences space is exhausted\n", seq->lss_name); RETURN(-ENOSPC); @@ -157,6 +146,41 @@ int seq_server_alloc_super(struct lu_server_seq *seq, RETURN(rc); } +int seq_server_alloc_spec(struct lu_server_seq *seq, + struct lu_seq_range *spec, + const struct lu_env *env) +{ + struct lu_seq_range *space = &seq->lss_space; + int rc = -ENOSPC; + ENTRY; + + /* + * In some cases (like recovery after a disaster) + * we may need to allocate sequences manually + * Notice some sequences can be lost if requested + * range doesn't start at the beginning of current + * free space. Also notice it's not possible now + * to allocate sequences out of natural order. + */ + if (spec->lsr_start >= spec->lsr_end) + RETURN(-EINVAL); + if (spec->lsr_flags != LU_SEQ_RANGE_MDT && + spec->lsr_flags != LU_SEQ_RANGE_OST) + RETURN(-EINVAL); + + mutex_lock(&seq->lss_mutex); + if (spec->lsr_start >= space->lsr_start) { + space->lsr_start = spec->lsr_end; + rc = seq_store_update(env, seq, spec, 1 /* sync */); + + LCONSOLE_INFO("%s: "DRANGE" sequences allocated: rc = %d \n", + seq->lss_name, PRANGE(spec), rc); + } + mutex_unlock(&seq->lss_mutex); + + RETURN(rc); +} + static int __seq_set_init(const struct lu_env *env, struct lu_server_seq *seq) { @@ -183,66 +207,77 @@ static int __seq_set_init(const struct lu_env *env, * * when lss_lowater_set reaches the end it is replaced with hiwater one and * a write operation is initiated to allocate new hiwater range. - * if last seq write opearion is still not commited, current operation is + * if last seq write opearion is still not committed, current operation is * flaged as sync write op. */ static int range_alloc_set(const struct lu_env *env, - struct lu_seq_range *out, - struct lu_server_seq *seq) + struct lu_seq_range *out, + struct lu_server_seq *seq) { - struct lu_seq_range *space = &seq->lss_space; - struct lu_seq_range *loset = &seq->lss_lowater_set; - struct lu_seq_range *hiset = &seq->lss_hiwater_set; - int rc = 0; + struct lu_seq_range *space = &seq->lss_space; + struct lu_seq_range *loset = &seq->lss_lowater_set; + struct lu_seq_range *hiset = &seq->lss_hiwater_set; + int rc = 0; - if (range_is_zero(loset)) - __seq_set_init(env, seq); + if (lu_seq_range_is_zero(loset)) + __seq_set_init(env, seq); - if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_ALLOC)) /* exhaust set */ - loset->lsr_start = loset->lsr_end; + if (OBD_FAIL_CHECK(OBD_FAIL_SEQ_ALLOC)) /* exhaust set */ + loset->lsr_start = loset->lsr_end; - if (range_is_exhausted(loset)) { - /* reached high water mark. */ + if (lu_seq_range_is_exhausted(loset)) { + /* reached high water mark. */ struct lu_device *dev = seq->lss_site->ss_lu->ls_top_dev; - int obd_num_clients = dev->ld_obd->obd_num_exports; - __u64 set_sz; + int obd_num_clients = dev->ld_obd->obd_num_exports; + __u64 set_sz; - /* calculate new seq width based on number of clients */ - set_sz = max(seq->lss_set_width, - obd_num_clients * seq->lss_width); - set_sz = min(range_space(space), set_sz); + /* calculate new seq width based on number of clients */ + set_sz = max(seq->lss_set_width, + obd_num_clients * seq->lss_width); + set_sz = min(lu_seq_range_space(space), set_sz); - /* Switch to hiwater range now */ - *loset = *hiset; - /* allocate new hiwater range */ - range_alloc(hiset, space, set_sz); + /* Switch to hiwater range now */ + *loset = *hiset; + /* allocate new hiwater range */ + range_alloc(hiset, space, set_sz); - /* update ondisk seq with new *space */ - rc = seq_store_update(env, seq, NULL, seq->lss_need_sync); - } + /* update ondisk seq with new *space */ + rc = seq_store_update(env, seq, NULL, seq->lss_need_sync); + } - LASSERTF(!range_is_exhausted(loset) || range_is_sane(loset), - DRANGE"\n", PRANGE(loset)); + LASSERTF(!lu_seq_range_is_exhausted(loset) || + lu_seq_range_is_sane(loset), + DRANGE"\n", PRANGE(loset)); - if (rc == 0) - range_alloc(out, loset, seq->lss_width); + if (rc == 0) + range_alloc(out, loset, seq->lss_width); - RETURN(rc); + RETURN(rc); } -static int __seq_server_alloc_meta(struct lu_server_seq *seq, - struct lu_seq_range *out, - const struct lu_env *env) +/** + * Check if the sequence server has sequence avaible + * + * Check if the sequence server has sequence avaible, if not, then + * allocating super sequence from sequence manager (MDT0). + * + * \param[in] env execution environment + * \param[in] seq server sequence + * + * \retval negative errno if allocating new sequence fails + * \retval 0 if there is enough sequence or allocating + * new sequence succeeds + */ +int seq_server_check_and_alloc_super(const struct lu_env *env, + struct lu_server_seq *seq) { struct lu_seq_range *space = &seq->lss_space; int rc = 0; ENTRY; - LASSERT(range_is_sane(space)); - /* Check if available space ends and allocate new super seq */ - if (range_is_exhausted(space)) { + if (lu_seq_range_is_exhausted(space)) { if (!seq->lss_cli) { CERROR("%s: No sequence controller is attached.\n", seq->lss_name); @@ -251,14 +286,48 @@ static int __seq_server_alloc_meta(struct lu_server_seq *seq, rc = seq_client_alloc_super(seq->lss_cli, env); if (rc) { - CERROR("%s: Can't allocate super-sequence, rc %d\n", - seq->lss_name, rc); + CDEBUG(D_HA, "%s: Can't allocate super-sequence:" + " rc %d\n", seq->lss_name, rc); RETURN(rc); } /* Saving new range to allocation space. */ *space = seq->lss_cli->lcs_space; - LASSERT(range_is_sane(space)); + LASSERT(lu_seq_range_is_sane(space)); + if (seq->lss_cli->lcs_srv == NULL) { + struct lu_server_fld *fld; + + /* Insert it to the local FLDB */ + fld = seq->lss_site->ss_server_fld; + mutex_lock(&fld->lsf_lock); + rc = fld_insert_entry(env, fld, space); + mutex_unlock(&fld->lsf_lock); + } + } + + if (lu_seq_range_is_zero(&seq->lss_lowater_set)) + __seq_set_init(env, seq); + + RETURN(rc); +} +EXPORT_SYMBOL(seq_server_check_and_alloc_super); + +static int __seq_server_alloc_meta(struct lu_server_seq *seq, + struct lu_seq_range *out, + const struct lu_env *env) +{ + struct lu_seq_range *space = &seq->lss_space; + int rc = 0; + + ENTRY; + + LASSERT(lu_seq_range_is_sane(space)); + + rc = seq_server_check_and_alloc_super(env, seq); + if (rc < 0) { + CERROR("%s: Allocated super-sequence failed: rc = %d\n", + seq->lss_name, rc); + RETURN(rc); } rc = range_alloc_set(env, out, seq); @@ -295,9 +364,11 @@ static int seq_server_handle(struct lu_site *site, { int rc; struct seq_server_site *ss_site; + struct dt_device *dev; ENTRY; ss_site = lu_site2seq(site); + switch (opc) { case SEQ_ALLOC_META: if (!ss_site->ss_server_seq) { @@ -305,6 +376,11 @@ static int seq_server_handle(struct lu_site *site, "initialized\n"); RETURN(-EINVAL); } + + dev = lu2dt_dev(ss_site->ss_server_seq->lss_obj->do_lu.lo_dev); + if (dev->dd_rdonly) + RETURN(-EROFS); + rc = seq_server_alloc_meta(ss_site->ss_server_seq, out, env); break; case SEQ_ALLOC_SUPER: @@ -313,6 +389,11 @@ static int seq_server_handle(struct lu_site *site, "initialized\n"); RETURN(-EINVAL); } + + dev = lu2dt_dev(ss_site->ss_control_seq->lss_obj->do_lu.lo_dev); + if (dev->dd_rdonly) + RETURN(-EROFS); + rc = seq_server_alloc_super(ss_site->ss_control_seq, out, env); break; default: @@ -323,128 +404,97 @@ static int seq_server_handle(struct lu_site *site, RETURN(rc); } -static int seq_req_handle(struct ptlrpc_request *req, - const struct lu_env *env, - struct seq_thread_info *info) +static int seq_handler(struct tgt_session_info *tsi) { - struct lu_seq_range *out, *tmp; - struct lu_site *site; - int rc = -EPROTO; - __u32 *opc; - ENTRY; + struct lu_seq_range *out, *tmp; + struct lu_site *site; + int rc; + __u32 *opc; - LASSERT(!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)); - site = req->rq_export->exp_obd->obd_lu_dev->ld_site; - LASSERT(site != NULL); + ENTRY; - rc = req_capsule_server_pack(info->sti_pill); - if (rc) - RETURN(err_serious(rc)); + LASSERT(!(lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY)); + site = tsi->tsi_exp->exp_obd->obd_lu_dev->ld_site; + LASSERT(site != NULL); - opc = req_capsule_client_get(info->sti_pill, &RMF_SEQ_OPC); - if (opc != NULL) { - out = req_capsule_server_get(info->sti_pill, &RMF_SEQ_RANGE); - if (out == NULL) - RETURN(err_serious(-EPROTO)); + opc = req_capsule_client_get(tsi->tsi_pill, &RMF_SEQ_OPC); + if (opc != NULL) { + out = req_capsule_server_get(tsi->tsi_pill, &RMF_SEQ_RANGE); + if (out == NULL) + RETURN(err_serious(-EPROTO)); - tmp = req_capsule_client_get(info->sti_pill, &RMF_SEQ_RANGE); + tmp = req_capsule_client_get(tsi->tsi_pill, &RMF_SEQ_RANGE); - /* seq client passed mdt id, we need to pass that using out - * range parameter */ + /* seq client passed mdt id, we need to pass that using out + * range parameter */ - out->lsr_index = tmp->lsr_index; - out->lsr_flags = tmp->lsr_flags; - rc = seq_server_handle(site, env, *opc, out); - } else - rc = err_serious(-EPROTO); + out->lsr_index = tmp->lsr_index; + out->lsr_flags = tmp->lsr_flags; + rc = seq_server_handle(site, tsi->tsi_env, *opc, out); + } else { + rc = err_serious(-EPROTO); + } - RETURN(rc); + RETURN(rc); } +struct tgt_handler seq_handlers[] = { +TGT_SEQ_HDL(HABEO_REFERO, SEQ_QUERY, seq_handler), +}; +EXPORT_SYMBOL(seq_handlers); + /* context key constructor/destructor: seq_key_init, seq_key_fini */ LU_KEY_INIT_FINI(seq, struct seq_thread_info); /* context key: seq_thread_key */ -LU_CONTEXT_KEY_DEFINE(seq, LCT_MD_THREAD); +LU_CONTEXT_KEY_DEFINE(seq, LCT_MD_THREAD | LCT_DT_THREAD); -static void seq_thread_info_init(struct ptlrpc_request *req, - struct seq_thread_info *info) -{ - info->sti_pill = &req->rq_pill; - /* Init request capsule */ - req_capsule_init(info->sti_pill, req, RCL_SERVER); - req_capsule_set(info->sti_pill, &RQF_SEQ_QUERY); -} - -static void seq_thread_info_fini(struct seq_thread_info *info) -{ - req_capsule_fini(info->sti_pill); -} - -static int seq_handle(struct ptlrpc_request *req) -{ - const struct lu_env *env; - struct seq_thread_info *info; - int rc; +extern const struct file_operations seq_fld_proc_seq_fops; - env = req->rq_svc_thread->t_env; - LASSERT(env != NULL); - - info = lu_context_key_get(&env->le_ctx, &seq_thread_key); - LASSERT(info != NULL); - - seq_thread_info_init(req, info); - rc = seq_req_handle(req, env, info); - /* XXX: we don't need replay but MDT assign transno in any case, - * remove it manually before reply*/ - lustre_msg_set_transno(req->rq_repmsg, 0); - seq_thread_info_fini(info); - - return rc; -} - -/* - * Entry point for handling FLD RPCs called from MDT. - */ -int seq_query(struct com_thread_info *info) -{ - return seq_handle(info->cti_pill->rc_req); -} -EXPORT_SYMBOL(seq_query); - -static void seq_server_proc_fini(struct lu_server_seq *seq); - -#ifdef LPROCFS static int seq_server_proc_init(struct lu_server_seq *seq) { - int rc; - ENTRY; +#ifdef CONFIG_PROC_FS + int rc; + ENTRY; - seq->lss_proc_dir = lprocfs_register(seq->lss_name, - seq_type_proc_dir, - NULL, NULL); - if (IS_ERR(seq->lss_proc_dir)) { - rc = PTR_ERR(seq->lss_proc_dir); - RETURN(rc); - } + seq->lss_proc_dir = lprocfs_register(seq->lss_name, + seq_type_proc_dir, + NULL, NULL); + if (IS_ERR(seq->lss_proc_dir)) { + rc = PTR_ERR(seq->lss_proc_dir); + RETURN(rc); + } - rc = lprocfs_add_vars(seq->lss_proc_dir, - seq_server_proc_list, seq); - if (rc) { - CERROR("%s: Can't init sequence manager " - "proc, rc %d\n", seq->lss_name, rc); - GOTO(out_cleanup, rc); - } + rc = lprocfs_add_vars(seq->lss_proc_dir, seq_server_proc_list, seq); + if (rc) { + CERROR("%s: Can't init sequence manager " + "proc, rc %d\n", seq->lss_name, rc); + GOTO(out_cleanup, rc); + } - RETURN(0); + if (seq->lss_type == LUSTRE_SEQ_CONTROLLER) { + rc = lprocfs_seq_create(seq->lss_proc_dir, "fldb", 0644, + &seq_fld_proc_seq_fops, seq); + if (rc) { + CERROR("%s: Can't create fldb for sequence manager " + "proc: rc = %d\n", seq->lss_name, rc); + GOTO(out_cleanup, rc); + } + } + + RETURN(0); out_cleanup: - seq_server_proc_fini(seq); - return rc; + seq_server_proc_fini(seq); + return rc; +#else /* !CONFIG_PROC_FS */ + return 0; +#endif /* CONFIG_PROC_FS */ } static void seq_server_proc_fini(struct lu_server_seq *seq) { +#ifdef CONFIG_PROC_FS ENTRY; if (seq->lss_proc_dir != NULL) { if (!IS_ERR(seq->lss_proc_dir)) @@ -452,43 +502,43 @@ static void seq_server_proc_fini(struct lu_server_seq *seq) seq->lss_proc_dir = NULL; } EXIT; +#endif /* CONFIG_PROC_FS */ } -#else -static int seq_server_proc_init(struct lu_server_seq *seq) -{ - return 0; -} - -static void seq_server_proc_fini(struct lu_server_seq *seq) -{ - return; -} -#endif - -int seq_server_init(struct lu_server_seq *seq, +int seq_server_init(const struct lu_env *env, + struct lu_server_seq *seq, struct dt_device *dev, const char *prefix, enum lu_mgr_type type, - struct seq_server_site *ss, - const struct lu_env *env) + struct seq_server_site *ss) { - int rc, is_srv = (type == LUSTRE_SEQ_SERVER); - ENTRY; + int rc, is_srv = (type == LUSTRE_SEQ_SERVER); + ENTRY; - LASSERT(dev != NULL); - LASSERT(prefix != NULL); + LASSERT(dev != NULL); + LASSERT(prefix != NULL); LASSERT(ss != NULL); LASSERT(ss->ss_lu != NULL); + /* A compile-time check for FIDs that used to be in lustre_idl.h + * but is moved here to remove CLASSERT/LASSERT in that header. + * Check all lu_fid fields are converted in fid_cpu_to_le() and friends + * and that there is no padding added by compiler to the struct. */ + { + struct lu_fid tst; + + CLASSERT(sizeof(tst) == sizeof(tst.f_seq) + + sizeof(tst.f_oid) + sizeof(tst.f_ver)); + } + seq->lss_cli = NULL; seq->lss_type = type; seq->lss_site = ss; - range_init(&seq->lss_space); + lu_seq_range_init(&seq->lss_space); - range_init(&seq->lss_lowater_set); - range_init(&seq->lss_hiwater_set); - seq->lss_set_width = LUSTRE_SEQ_BATCH_WIDTH; + lu_seq_range_init(&seq->lss_lowater_set); + lu_seq_range_init(&seq->lss_hiwater_set); + seq->lss_set_width = LUSTRE_SEQ_BATCH_WIDTH; mutex_init(&seq->lss_mutex); @@ -526,12 +576,12 @@ int seq_server_init(struct lu_server_seq *seq, GOTO(out, rc); } - if (is_srv) { - LASSERT(range_is_sane(&seq->lss_space)); - } else { - LASSERT(!range_is_zero(&seq->lss_space) && - range_is_sane(&seq->lss_space)); - } + if (is_srv) { + LASSERT(lu_seq_range_is_sane(&seq->lss_space)); + } else { + LASSERT(!lu_seq_range_is_zero(&seq->lss_space) && + lu_seq_range_is_sane(&seq->lss_space)); + } rc = seq_server_proc_init(seq); if (rc) @@ -557,33 +607,40 @@ void seq_server_fini(struct lu_server_seq *seq, } EXPORT_SYMBOL(seq_server_fini); -cfs_proc_dir_entry_t *seq_type_proc_dir = NULL; - -static int __init fid_mod_init(void) +int seq_site_fini(const struct lu_env *env, struct seq_server_site *ss) { - seq_type_proc_dir = lprocfs_register(LUSTRE_SEQ_NAME, - proc_lustre_root, - NULL, NULL); - if (IS_ERR(seq_type_proc_dir)) - return PTR_ERR(seq_type_proc_dir); - - LU_CONTEXT_KEY_INIT(&seq_thread_key); - lu_context_key_register(&seq_thread_key); - return 0; + if (ss == NULL) + RETURN(0); + + if (ss->ss_server_seq) { + seq_server_fini(ss->ss_server_seq, env); + OBD_FREE_PTR(ss->ss_server_seq); + ss->ss_server_seq = NULL; + } + + if (ss->ss_control_seq) { + seq_server_fini(ss->ss_control_seq, env); + OBD_FREE_PTR(ss->ss_control_seq); + ss->ss_control_seq = NULL; + } + + if (ss->ss_client_seq) { + seq_client_fini(ss->ss_client_seq); + OBD_FREE_PTR(ss->ss_client_seq); + ss->ss_client_seq = NULL; + } + + RETURN(0); } +EXPORT_SYMBOL(seq_site_fini); -static void __exit fid_mod_exit(void) +int fid_server_mod_init(void) { - lu_context_key_degister(&seq_thread_key); - if (seq_type_proc_dir != NULL && !IS_ERR(seq_type_proc_dir)) { - lprocfs_remove(&seq_type_proc_dir); - seq_type_proc_dir = NULL; - } + LU_CONTEXT_KEY_INIT(&seq_thread_key); + return lu_context_key_register(&seq_thread_key); } -MODULE_AUTHOR("Sun Microsystems, Inc. "); -MODULE_DESCRIPTION("Lustre FID Module"); -MODULE_LICENSE("GPL"); - -cfs_module(fid, "0.1.0", fid_mod_init, fid_mod_exit); -#endif +void fid_server_mod_exit(void) +{ + lu_context_key_degister(&seq_thread_key); +}