X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdt%2Fmdt_open.c;h=e1717ddfccc8721f52ca9d599af1a24178436a0f;hp=38853b6b03f6c89e3e8388abc146fe7b7783a6ae;hb=9ddec96478d83afccec1d09266e063b2a5a0f71a;hpb=e3a7c58aebafce40323db54bf6056029e5af4a70 diff --git a/lustre/mdt/mdt_open.c b/lustre/mdt/mdt_open.c index 38853b6..e1717dd 100644 --- a/lustre/mdt/mdt_open.c +++ b/lustre/mdt/mdt_open.c @@ -27,7 +27,7 @@ * 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, 2012, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -40,9 +40,6 @@ * Author: Huang Hua */ -#ifndef EXPORT_SYMTAB -# define EXPORT_SYMTAB -#endif #define DEBUG_SUBSYSTEM S_MDS #include @@ -54,6 +51,11 @@ static void mdt_mfd_get(void *mfdp) { } +static struct portals_handle_ops mfd_handle_ops = { + .hop_addref = mdt_mfd_get, + .hop_free = NULL, +}; + /* Create a new mdt_file_data struct, initialize it, * and insert it to global hash table */ struct mdt_file_data *mdt_mfd_new(void) @@ -65,7 +67,7 @@ struct mdt_file_data *mdt_mfd_new(void) if (mfd != NULL) { CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link); CFS_INIT_LIST_HEAD(&mfd->mfd_list); - class_handle_hash(&mfd->mfd_handle, mdt_mfd_get); + class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops); } RETURN(mfd); } @@ -106,26 +108,34 @@ void mdt_mfd_free(struct mdt_file_data *mfd) static int mdt_create_data(struct mdt_thread_info *info, struct mdt_object *p, struct mdt_object *o) { - struct md_op_spec *spec = &info->mti_spec; - struct md_attr *ma = &info->mti_attr; - int rc = 0; - ENTRY; - - if (!md_should_create(spec->sp_cr_flags)) - RETURN(0); - - ma->ma_need = MA_INODE | MA_LOV; - ma->ma_valid = 0; - cfs_mutex_lock(&o->mot_lov_mutex); - if (!(o->mot_flags & MOF_LOV_CREATED)) { - rc = mdo_create_data(info->mti_env, - p ? mdt_object_child(p) : NULL, - mdt_object_child(o), spec, ma); - if (rc == 0 && ma->ma_valid & MA_LOV) - o->mot_flags |= MOF_LOV_CREATED; - } - cfs_mutex_unlock(&o->mot_lov_mutex); - RETURN(rc); + struct md_op_spec *spec = &info->mti_spec; + struct md_attr *ma = &info->mti_attr; + int rc = 0; + ENTRY; + + if (!md_should_create(spec->sp_cr_flags)) + RETURN(0); + + ma->ma_need = MA_INODE | MA_LOV; + ma->ma_valid = 0; + mutex_lock(&o->mot_lov_mutex); + if (!(o->mot_flags & MOF_LOV_CREATED)) { + if (p != NULL && (fid_is_obf(mdt_object_fid(p)) || + fid_is_dot_lustre(mdt_object_fid(p)))) + GOTO(unlock, rc = -EPERM); + + rc = mdo_create_data(info->mti_env, + p ? mdt_object_child(p) : NULL, + mdt_object_child(o), spec, ma); + if (rc == 0) + rc = mdt_attr_get_complex(info, o, ma); + + if (rc == 0 && ma->ma_valid & MA_LOV) + o->mot_flags |= MOF_LOV_CREATED; + } +unlock: + mutex_unlock(&o->mot_lov_mutex); + RETURN(rc); } static int mdt_ioepoch_opened(struct mdt_object *mo) @@ -167,14 +177,14 @@ int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o, !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) RETURN(0); - cfs_mutex_lock(&o->mot_ioepoch_mutex); - if (mdt_ioepoch_opened(o)) { - /* Epoch continues even if there is no writers yet. */ - CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n", - o->mot_ioepoch, PFID(mdt_object_fid(o))); - } else { - /* XXX: ->mdt_ioepoch is not initialized at the mount */ - cfs_spin_lock(&mdt->mdt_ioepoch_lock); + mutex_lock(&o->mot_ioepoch_mutex); + if (mdt_ioepoch_opened(o)) { + /* Epoch continues even if there is no writers yet. */ + CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n", + o->mot_ioepoch, PFID(mdt_object_fid(o))); + } else { + /* XXX: ->mdt_ioepoch is not initialized at the mount */ + spin_lock(&mdt->mdt_ioepoch_lock); if (mdt->mdt_ioepoch < info->mti_replayepoch) mdt->mdt_ioepoch = info->mti_replayepoch; @@ -185,16 +195,16 @@ int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o, else o->mot_ioepoch = mdt->mdt_ioepoch; - cfs_spin_unlock(&mdt->mdt_ioepoch_lock); + spin_unlock(&mdt->mdt_ioepoch_lock); - CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n", - o->mot_ioepoch, PFID(mdt_object_fid(o))); - if (created) - o->mot_flags |= MOF_SOM_CREATED; - cancel = 1; - } - o->mot_ioepoch_count++; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n", + o->mot_ioepoch, PFID(mdt_object_fid(o))); + if (created) + o->mot_flags |= MOF_SOM_CREATED; + cancel = 1; + } + o->mot_ioepoch_count++; + mutex_unlock(&o->mot_ioepoch_mutex); /* Cancel Size-on-MDS attributes cached on clients for the open case. * In the truncate case, see mdt_reint_setattr(). */ @@ -212,45 +222,49 @@ int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o, /** * Update SOM on-disk attributes. * If enabling, write update inodes and lustre-ea with the proper IOEpoch, - * mountid and attributes. If disabling, zero IOEpoch id in lustre-ea. + * mountid and attributes. If disabling, clean SOM xattr. * Call under ->mot_ioepoch_mutex. */ static int mdt_som_attr_set(struct mdt_thread_info *info, - struct mdt_object *obj, __u64 ioepoch, int enable) + struct mdt_object *obj, __u64 ioepoch, bool enable) { - struct md_attr *ma = &info->mti_attr; - int rc; + struct md_object *next = mdt_object_child(obj); + int rc; ENTRY; CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64 " on "DFID".\n", enable ? "update" : "disabling", ioepoch, PFID(mdt_object_fid(obj))); - ma->ma_valid |= MA_SOM; - ma->ma_som = &info->mti_u.som.data; - if (enable) { - struct mdt_device *mdt = info->mti_mdt; - struct lu_attr *la = &ma->ma_attr; - - ma->ma_som->msd_ioepoch = ioepoch; - ma->ma_som->msd_size = la->la_valid & LA_SIZE ? la->la_size : 0; - ma->ma_som->msd_blocks = la->la_valid & LA_BLOCKS ? - la->la_blocks : 0; - ma->ma_som->msd_mountid = mdt->mdt_lut.lut_obd->u.obt.obt_mount_count; - ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME; - } else { - ma->ma_som->msd_ioepoch = IOEPOCH_INVAL; - ma->ma_attr.la_valid &= LA_ATIME; - } - - /* Since we have opened the file, it is unnecessary - * to check permission when close it. Between the "open" - * and "close", maybe someone has changed the file mode - * or flags, or the file created mode do not permit wirte, - * and so on. Just set MDS_PERM_BYPASS for all the cases. */ - ma->ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM; + if (enable) { + struct lu_buf *buf = &info->mti_buf; + struct som_attrs *attrs; + struct md_attr *ma = &info->mti_attr; + struct lu_attr *la = &ma->ma_attr; + struct obd_device *obd = info->mti_mdt->mdt_lut.lut_obd; + + attrs = (struct som_attrs *)info->mti_xattr_buf; + CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs)); + + /* pack SOM attributes */ + memset(attrs, 0, sizeof(*attrs)); + attrs->som_ioepoch = ioepoch; + attrs->som_mountid = obd->u.obt.obt_mount_count; + if ((la->la_valid & LA_SIZE) != 0) + attrs->som_size = la->la_size; + if ((la->la_valid & LA_BLOCKS) != 0) + attrs->som_blocks = la->la_blocks; + lustre_som_swab(attrs); + + /* update SOM attributes */ + buf->lb_buf = attrs; + buf->lb_len = sizeof(*attrs); + rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_SOM, 0); + } else { + /* delete SOM attributes */ + rc = mo_xattr_del(info->mti_env, next, XATTR_NAME_SOM); + } - rc = mdt_attr_set(info, obj, ma, 0); RETURN(rc); } @@ -260,7 +274,7 @@ static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info, { int rc = 0; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". " "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count); @@ -273,7 +287,7 @@ static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info, rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE); mdt_object_som_enable(o, o->mot_ioepoch); } - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); RETURN(rc); } @@ -288,7 +302,7 @@ static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info, int rc = MDT_IOEPOCH_CLOSED; ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count); o->mot_ioepoch_count--; @@ -300,7 +314,7 @@ static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info, if (!mdt_ioepoch_opened(o)) mdt_object_som_enable(o, info->mti_ioepoch->ioepoch); - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); RETURN(rc); } @@ -329,7 +343,7 @@ static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info, la = &info->mti_attr.ma_attr; achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE); - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); o->mot_ioepoch_count--; tmp_ma = &info->mti_u.som.attr; @@ -338,7 +352,7 @@ static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info, tmp_ma->ma_som = &info->mti_u.som.data; tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM; tmp_ma->ma_valid = 0; - rc = mo_attr_get(info->mti_env, mdt_object_child(o), tmp_ma); + rc = mdt_attr_get_complex(info, o, tmp_ma); if (rc) GOTO(error_up, rc); @@ -396,7 +410,7 @@ static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info, mdt_object_som_enable(o, o->mot_ioepoch); } - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); /* If recovery is needed, tell the client to perform GETATTR under * the lock. */ if (ret == MDT_IOEPOCH_GETATTR && recovery) { @@ -408,7 +422,7 @@ static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info, RETURN(rc ? : ret); error_up: - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); return rc; } @@ -477,7 +491,7 @@ int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o) !(info->mti_attr.ma_attr.la_valid & LA_SIZE))) act = MDT_SOM_DISABLE; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); /* Mark the object it is the recovery state if we failed to obtain * SOM attributes. */ if (act == MDT_SOM_DISABLE) @@ -491,7 +505,7 @@ int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o) rc = mdt_som_attr_set(info, o, ioepoch, act); mdt_object_som_enable(o, ioepoch); } - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); RETURN(rc); } @@ -499,9 +513,9 @@ int mdt_write_read(struct mdt_object *o) { int rc = 0; ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); rc = o->mot_writecount; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); RETURN(rc); } @@ -509,21 +523,21 @@ int mdt_write_get(struct mdt_object *o) { int rc = 0; ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); if (o->mot_writecount < 0) rc = -ETXTBSY; else o->mot_writecount++; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); RETURN(rc); } void mdt_write_put(struct mdt_object *o) { ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); o->mot_writecount--; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); EXIT; } @@ -531,21 +545,21 @@ static int mdt_write_deny(struct mdt_object *o) { int rc = 0; ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); if (o->mot_writecount > 0) rc = -ETXTBSY; else o->mot_writecount--; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); RETURN(rc); } static void mdt_write_allow(struct mdt_object *o) { ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); + mutex_lock(&o->mot_ioepoch_mutex); o->mot_writecount++; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); + mutex_unlock(&o->mot_ioepoch_mutex); EXIT; } @@ -562,15 +576,26 @@ static void mdt_empty_transno(struct mdt_thread_info *info, int rc) if (lustre_msg_get_transno(req->rq_repmsg) != 0) RETURN_EXIT; - cfs_spin_lock(&mdt->mdt_lut.lut_translock); - if (info->mti_transno == 0) { - info->mti_transno = ++ mdt->mdt_lut.lut_last_transno; - } else { - /* should be replay */ - if (info->mti_transno > mdt->mdt_lut.lut_last_transno) - mdt->mdt_lut.lut_last_transno = info->mti_transno; - } - cfs_spin_unlock(&mdt->mdt_lut.lut_translock); + spin_lock(&mdt->mdt_lut.lut_translock); + if (rc != 0) { + if (info->mti_transno != 0) { + struct obd_export *exp = req->rq_export; + + CERROR("%s: replay trans "LPU64" NID %s: rc = %d\n", + mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name, + info->mti_transno, + libcfs_nid2str(exp->exp_connection->c_peer.nid), + rc); + RETURN_EXIT; + } + } else if (info->mti_transno == 0) { + info->mti_transno = ++mdt->mdt_lut.lut_last_transno; + } else { + /* should be replay */ + if (info->mti_transno > mdt->mdt_lut.lut_last_transno) + mdt->mdt_lut.lut_last_transno = info->mti_transno; + } + spin_unlock(&mdt->mdt_lut.lut_translock); CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n", info->mti_transno, @@ -582,12 +607,25 @@ static void mdt_empty_transno(struct mdt_thread_info *info, int rc) /* update lcd in memory only for resent cases */ ted = &req->rq_export->exp_target_data; LASSERT(ted); - cfs_mutex_lock(&ted->ted_lcd_lock); + mutex_lock(&ted->ted_lcd_lock); lcd = ted->ted_lcd; + if (info->mti_transno < lcd->lcd_last_transno && + info->mti_transno != 0) { + /* This should happen during replay. Do not update + * last rcvd info if replay req transno < last transno, + * otherwise the following resend(after replay) can not + * be checked correctly by xid */ + mutex_unlock(&ted->ted_lcd_lock); + CDEBUG(D_HA, "%s: transno = "LPU64" < last_transno = "LPU64"\n", + mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name, + info->mti_transno, lcd->lcd_last_transno); + RETURN_EXIT; + } + if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE || lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) { - if (info->mti_transno != 0) - lcd->lcd_last_close_transno = info->mti_transno; + if (info->mti_transno != 0) + lcd->lcd_last_close_transno = info->mti_transno; lcd->lcd_last_close_xid = req->rq_xid; lcd->lcd_last_close_result = rc; } else { @@ -599,13 +637,14 @@ static void mdt_empty_transno(struct mdt_thread_info *info, int rc) lcd->lcd_pre_versions[2] = pre_versions[2]; lcd->lcd_pre_versions[3] = pre_versions[3]; } - if (info->mti_transno != 0) - lcd->lcd_last_transno = info->mti_transno; - lcd->lcd_last_xid = req->rq_xid; + if (info->mti_transno != 0) + lcd->lcd_last_transno = info->mti_transno; + + lcd->lcd_last_xid = req->rq_xid; lcd->lcd_last_result = rc; lcd->lcd_last_data = info->mti_opdata; } - cfs_mutex_unlock(&ted->ted_lcd_lock); + mutex_unlock(&ted->ted_lcd_lock); EXIT; } @@ -670,7 +709,13 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, repbody->ioepoch = o->mot_ioepoch; } } else if (flags & MDS_FMODE_EXEC) { - rc = mdt_write_deny(o); + /* if file is released, we can't deny write because we must + * restore (write) it to access it.*/ + if ((ma->ma_valid & MA_HSM) && + (ma->ma_hsm.mh_flags & HS_RELEASED)) + rc = 0; + else + rc = mdt_write_deny(o); } if (rc) RETURN(rc); @@ -715,10 +760,10 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, "cookie=" LPX64"\n", mfd, PFID(mdt_object_fid(mfd->mfd_object)), info->mti_rr.rr_handle->cookie); - cfs_spin_lock(&med->med_open_lock); - class_handle_unhash(&old_mfd->mfd_handle); - cfs_list_del_init(&old_mfd->mfd_list); - cfs_spin_unlock(&med->med_open_lock); + spin_lock(&med->med_open_lock); + class_handle_unhash(&old_mfd->mfd_handle); + cfs_list_del_init(&old_mfd->mfd_list); + spin_unlock(&med->med_open_lock); /* no attr update for that close */ la->la_valid = 0; ma->ma_valid |= MA_FLAGS; @@ -735,15 +780,15 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, repbody->handle.cookie = mfd->mfd_handle.h_cookie; if (req->rq_export->exp_disconnected) { - cfs_spin_lock(&med->med_open_lock); - class_handle_unhash(&mfd->mfd_handle); - cfs_list_del_init(&mfd->mfd_list); - cfs_spin_unlock(&med->med_open_lock); - mdt_mfd_close(info, mfd); - } else { - cfs_spin_lock(&med->med_open_lock); - cfs_list_add(&mfd->mfd_list, &med->med_open_head); - cfs_spin_unlock(&med->med_open_lock); + spin_lock(&med->med_open_lock); + class_handle_unhash(&mfd->mfd_handle); + cfs_list_del_init(&mfd->mfd_list); + spin_unlock(&med->med_open_lock); + mdt_mfd_close(info, mfd); + } else { + spin_lock(&med->med_open_lock); + cfs_list_add(&mfd->mfd_list, &med->med_open_head); + spin_unlock(&med->med_open_lock); } mdt_empty_transno(info, rc); @@ -788,6 +833,21 @@ int mdt_finish_open(struct mdt_thread_info *info, islnk = S_ISLNK(la->la_mode); mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o)); + /* LU-2275, simulate broken behaviour (esp. prevalent in + * pre-2.4 servers where a very strange reply is sent on error + * that looks like it was actually almost succesful and a failure at the + * same time */ + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) { + mdt_set_disposition(info, rep, DISP_OPEN_OPEN | + DISP_LOOKUP_NEG | + DISP_LOOKUP_POS); + + if (flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, rep, DISP_OPEN_LOCK); + + RETURN(-ENOENT); + } + if (exp_connect_rmtclient(exp)) { void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL); @@ -801,7 +861,7 @@ int mdt_finish_open(struct mdt_thread_info *info, } } #ifdef CONFIG_FS_POSIX_ACL - else if (exp->exp_connect_flags & OBD_CONNECT_ACL) { + else if (exp_connect_flags(exp) & OBD_CONNECT_ACL) { const struct lu_env *env = info->mti_env; struct md_object *next = mdt_object_child(o); struct lu_buf *buf = &info->mti_buf; @@ -831,8 +891,8 @@ int mdt_finish_open(struct mdt_thread_info *info, } #endif - if (info->mti_mdt->mdt_opts.mo_mds_capa && - exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) { + if (info->mti_mdt->mdt_opts.mo_mds_capa && + exp_connect_flags(exp) & OBD_CONNECT_MDS_CAPA) { struct lustre_capa *capa; capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1); @@ -843,9 +903,9 @@ int mdt_finish_open(struct mdt_thread_info *info, RETURN(rc); repbody->valid |= OBD_MD_FLMDSCAPA; } - if (info->mti_mdt->mdt_opts.mo_oss_capa && - exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA && - S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) { + if (info->mti_mdt->mdt_opts.mo_oss_capa && + exp_connect_flags(exp) & OBD_CONNECT_OSS_CAPA && + S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) { struct lustre_capa *capa; capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2); @@ -861,13 +921,11 @@ int mdt_finish_open(struct mdt_thread_info *info, * If we are following a symlink, don't open; and do not return open * handle for special nodes as client required. */ - if (islnk || (!isreg && !isdir && - (req->rq_export->exp_connect_flags & OBD_CONNECT_NODEVOH))) { - lustre_msg_set_transno(req->rq_repmsg, 0); - RETURN(0); - } - - mdt_set_disposition(info, rep, DISP_OPEN_OPEN); + if (islnk || (!isreg && !isdir && + (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) { + lustre_msg_set_transno(req->rq_repmsg, 0); + RETURN(0); + } /* * We need to return the existing object's fid back, so it is done here, @@ -892,15 +950,14 @@ int mdt_finish_open(struct mdt_thread_info *info, mfd = NULL; if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { - cfs_spin_lock(&med->med_open_lock); - cfs_list_for_each(t, &med->med_open_head) { - mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list); - if (mfd->mfd_xid == req->rq_xid) { - break; - } - mfd = NULL; - } - cfs_spin_unlock(&med->med_open_lock); + spin_lock(&med->med_open_lock); + cfs_list_for_each(t, &med->med_open_head) { + mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list); + if (mfd->mfd_xid == req->rq_xid) + break; + mfd = NULL; + } + spin_unlock(&med->med_open_lock); if (mfd != NULL) { repbody->handle.cookie = mfd->mfd_handle.h_cookie; @@ -913,11 +970,15 @@ int mdt_finish_open(struct mdt_thread_info *info, else repbody->valid |= OBD_MD_FLEASIZE; } + mdt_set_disposition(info, rep, DISP_OPEN_OPEN); RETURN(0); } } rc = mdt_mfd_open(info, p, o, flags, created); + if (!rc) + mdt_set_disposition(info, rep, DISP_OPEN_OPEN); + RETURN(rc); } @@ -950,7 +1011,7 @@ void mdt_reconstruct_open(struct mdt_thread_info *info, ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD); ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER); - ma->ma_need = MA_INODE; + ma->ma_need = MA_INODE | MA_HSM; if (ma->ma_lmm_size > 0) ma->ma_need |= MA_LOV; @@ -996,27 +1057,35 @@ void mdt_reconstruct_open(struct mdt_thread_info *info, mdt_export_evict(exp); RETURN_EXIT; } - rc = mdt_object_exists(child); - if (rc > 0) { - struct md_object *next; - - mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA); - next = mdt_object_child(child); - rc = mo_attr_get(env, next, ma); - if (rc == 0) - rc = mdt_finish_open(info, parent, child, - flags, 1, ldlm_rep); - } else if (rc < 0) { - /* the child object was created on remote server */ - repbody->fid1 = *rr->rr_fid2; - repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); - rc = 0; - } else if (rc == 0) { - /* the child does not exist, we should do regular open */ - mdt_object_put(env, parent); - mdt_object_put(env, child); - GOTO(regular_open, 0); - } + + if (unlikely(mdt_object_remote(child))) { + /* the child object was created on remote server */ + if (!mdt_is_dne_client(exp)) { + /* Return -EIO for old client */ + mdt_object_put(env, parent); + mdt_object_put(env, child); + GOTO(out, rc = -EIO); + } + repbody->fid1 = *rr->rr_fid2; + repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); + rc = 0; + } else { + if (mdt_object_exists(child)) { + mdt_set_capainfo(info, 1, rr->rr_fid2, + BYPASS_CAPA); + rc = mdt_attr_get_complex(info, child, ma); + if (rc == 0) + rc = mdt_finish_open(info, parent, + child, flags, + 1, ldlm_rep); + } else { + /* the child does not exist, we should do + * regular open */ + mdt_object_put(env, parent); + mdt_object_put(env, child); + GOTO(regular_open, 0); + } + } mdt_object_put(env, parent); mdt_object_put(env, child); GOTO(out, rc); @@ -1036,7 +1105,6 @@ out: int mdt_open_by_fid(struct mdt_thread_info* info, struct ldlm_reply *rep) { - const struct lu_env *env = info->mti_env; __u32 flags = info->mti_spec.sp_cr_flags; struct mdt_reint_record *rr = &info->mti_rr; struct md_attr *ma = &info->mti_attr; @@ -1048,33 +1116,158 @@ int mdt_open_by_fid(struct mdt_thread_info* info, if (IS_ERR(o)) RETURN(rc = PTR_ERR(o)); - rc = mdt_object_exists(o); - if (rc > 0) { - mdt_set_disposition(info, rep, (DISP_IT_EXECD | - DISP_LOOKUP_EXECD | - DISP_LOOKUP_POS)); - - rc = mo_attr_get(env, mdt_object_child(o), ma); - if (rc == 0) - rc = mdt_finish_open(info, NULL, o, flags, 0, rep); - } else if (rc == 0) { - rc = -ENOENT; - } else { + if (unlikely(mdt_object_remote(o))) { /* the child object was created on remote server */ struct mdt_body *repbody; + + mdt_set_disposition(info, rep, (DISP_IT_EXECD | + DISP_LOOKUP_EXECD | + DISP_LOOKUP_POS)); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); repbody->fid1 = *rr->rr_fid2; repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); rc = 0; - } + } else { + if (mdt_object_exists(o)) { + mdt_set_disposition(info, rep, (DISP_IT_EXECD | + DISP_LOOKUP_EXECD | + DISP_LOOKUP_POS)); + + rc = mdt_attr_get_complex(info, o, ma); + if (rc == 0) + rc = mdt_finish_open(info, NULL, o, flags, 0, + rep); + } else { + rc = -ENOENT; + } + } mdt_object_put(info->mti_env, o); RETURN(rc); } -int mdt_open_anon_by_fid(struct mdt_thread_info *info, - struct ldlm_reply *rep, - struct mdt_lock_handle *lhc) +/* lock object for open */ +static int mdt_object_open_lock(struct mdt_thread_info *info, + struct mdt_object *obj, + struct mdt_lock_handle *lhc, + __u64 *ibits) +{ + struct md_attr *ma = &info->mti_attr; + __u64 open_flags = info->mti_spec.sp_cr_flags; + ldlm_mode_t lm = LCK_CR; + bool try_layout = false; + bool create_layout = false; + int rc = 0; + ENTRY; + + *ibits = 0; + if (open_flags & MDS_OPEN_LOCK) { + if (open_flags & FMODE_WRITE) + lm = LCK_CW; + /* if file is released, we can't deny write because we must + * restore (write) it to access it. */ + else if ((open_flags & MDS_FMODE_EXEC) && + !((ma->ma_valid & MA_HSM) && + (ma->ma_hsm.mh_flags & HS_RELEASED))) + lm = LCK_PR; + else + lm = LCK_CR; + + *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN; + } + + if (S_ISREG(lu_object_attr(&obj->mot_obj.mo_lu))) { + if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) && + md_should_create(open_flags)) + create_layout = true; + if (exp_connect_layout(info->mti_exp) && !create_layout && + ma->ma_need & MA_LOV) + try_layout = true; + } + + mdt_lock_handle_init(lhc); + mdt_lock_reg_init(lhc, lm); + + /* one problem to return layout lock on open is that it may result + * in too many layout locks cached on the client side. */ + if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) { + /* return lookup lock to validate inode at the client side, + * this is pretty important otherwise mdt will return layout + * lock for each open. + * However this is a double-edged sword because changing + * permission will revoke huge # of LOOKUP locks. */ + *ibits |= MDS_INODELOCK_LAYOUT | MDS_INODELOCK_LOOKUP; + if (!mdt_object_lock_try(info, obj, lhc, *ibits, + MDT_CROSS_LOCK)) { + *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP); + if (*ibits != 0) + rc = mdt_object_lock(info, obj, lhc, *ibits, + MDT_CROSS_LOCK); + } + } else if (*ibits != 0) { + rc = mdt_object_lock(info, obj, lhc, *ibits, MDT_CROSS_LOCK); + } + + CDEBUG(D_INODE, "Requested bits lock:"DFID ", ibits = "LPX64 + ", open_flags = "LPO64", try_layout = %d, rc = %d\n", + PFID(mdt_object_fid(obj)), *ibits, open_flags, try_layout, rc); + + /* will change layout, revoke layout locks by enqueuing EX lock. */ + if (rc == 0 && create_layout) { + struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT]; + + CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID + ", open_flags = "LPO64"\n", + PFID(mdt_object_fid(obj)), open_flags); + + LASSERT(!try_layout); + mdt_lock_handle_init(ll); + mdt_lock_reg_init(ll, LCK_EX); + rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT, + MDT_LOCAL_LOCK); + + OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2); + } + + RETURN(rc); +} + +static void mdt_object_open_unlock(struct mdt_thread_info *info, + struct mdt_object *obj, + struct mdt_lock_handle *lhc, + __u64 ibits, int rc) +{ + __u64 open_flags = info->mti_spec.sp_cr_flags; + struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT]; + + /* Release local layout lock - the layout lock put in MDT_LH_LAYOUT + * will never return to client side. */ + if (lustre_handle_is_used(&ll->mlh_reg_lh)) { + LASSERT(!(ibits & MDS_INODELOCK_LAYOUT)); + mdt_object_unlock(info, obj, ll, 1); + } + + /* Cross-ref case, the lock should be returned to the client */ + if (ibits == 0 || rc == -EREMOTE) + return; + + if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT)) { + /* for the open request, the lock will only return to client + * if open or layout lock is granted. */ + rc = 1; + } + + if (rc != 0) { + struct ldlm_reply *ldlm_rep; + + ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP); + mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK); + mdt_object_unlock(info, obj, lhc, 1); + } +} + +int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep, + struct mdt_lock_handle *lhc) { const struct lu_env *env = info->mti_env; struct mdt_device *mdt = info->mti_mdt; @@ -1084,10 +1277,10 @@ int mdt_open_anon_by_fid(struct mdt_thread_info *info, struct mdt_object *parent= NULL; struct mdt_object *o; int rc; - ldlm_mode_t lm; + __u64 ibits; ENTRY; - if (md_should_create(flags)) { + if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) { if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) { parent = mdt_object_find(env, mdt, rr->rr_fid1); if (IS_ERR(parent)) { @@ -1106,35 +1299,26 @@ int mdt_open_anon_by_fid(struct mdt_thread_info *info, if (IS_ERR(o)) RETURN(rc = PTR_ERR(o)); - rc = mdt_object_exists(o); - if (rc == 0) { - mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD | - DISP_LOOKUP_NEG)); - GOTO(out, rc = -ENOENT); - } else if (rc < 0) { - CERROR("NFS remote open shouldn't happen.\n"); - GOTO(out, rc); - } - mdt_set_disposition(info, rep, (DISP_IT_EXECD | - DISP_LOOKUP_EXECD | - DISP_LOOKUP_POS)); - - if (flags & FMODE_WRITE) - lm = LCK_CW; - else if (flags & MDS_FMODE_EXEC) - lm = LCK_PR; - else - lm = LCK_CR; - - mdt_lock_handle_init(lhc); - mdt_lock_reg_init(lhc, lm); - rc = mdt_object_lock(info, o, lhc, - MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN, - MDT_CROSS_LOCK); + if (mdt_object_remote(o)) { + CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n", + info->mti_mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name, + PFID(rr->rr_fid2)); + GOTO(out, rc = -EREMOTE); + } else if (!mdt_object_exists(o)) { + mdt_set_disposition(info, rep, + DISP_IT_EXECD | + DISP_LOOKUP_EXECD | + DISP_LOOKUP_NEG); + GOTO(out, rc = -ENOENT); + } + + mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD)); + + rc = mdt_attr_get_complex(info, o, ma); if (rc) GOTO(out, rc); - rc = mo_attr_get(env, mdt_object_child(o), ma); + rc = mdt_object_open_lock(info, o, lhc, &ibits); if (rc) GOTO(out, rc); @@ -1149,15 +1333,16 @@ int mdt_open_anon_by_fid(struct mdt_thread_info *info, } } - if (flags & MDS_OPEN_LOCK) - mdt_set_disposition(info, rep, DISP_OPEN_LOCK); rc = mdt_finish_open(info, parent, o, flags, 0, rep); - - if (!(flags & MDS_OPEN_LOCK) || rc) - mdt_object_unlock(info, o, lhc, 1); - + if (!rc) { + mdt_set_disposition(info, rep, DISP_LOOKUP_POS); + if (flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, rep, DISP_OPEN_LOCK); + } GOTO(out, rc); + out: + mdt_object_open_unlock(info, o, lhc, ibits, rc); mdt_object_put(env, o); if (parent != NULL) mdt_object_put(env, parent); @@ -1171,9 +1356,10 @@ int mdt_pin(struct mdt_thread_info* info) } /* Cross-ref request. Currently it can only be a pure open (w/o create) */ -int mdt_cross_open(struct mdt_thread_info* info, - const struct lu_fid *fid, - struct ldlm_reply *rep, __u32 flags) +static int mdt_cross_open(struct mdt_thread_info *info, + const struct lu_fid *parent_fid, + const struct lu_fid *fid, + struct ldlm_reply *rep, __u32 flags) { struct md_attr *ma = &info->mti_attr; struct mdt_object *o; @@ -1184,35 +1370,46 @@ int mdt_cross_open(struct mdt_thread_info* info, if (IS_ERR(o)) RETURN(rc = PTR_ERR(o)); - rc = mdt_object_exists(o); - if (rc > 0) { - /* Do permission check for cross-open. */ - rc = mo_permission(info->mti_env, NULL, mdt_object_child(o), - NULL, flags | MDS_OPEN_CROSS); - if (rc) - goto out; - - mdt_set_capainfo(info, 0, fid, BYPASS_CAPA); - rc = mo_attr_get(info->mti_env, mdt_object_child(o), ma); - if (rc == 0) - rc = mdt_finish_open(info, NULL, o, flags, 0, rep); - } else if (rc == 0) { - /* - * Something is wrong here. lookup was positive but there is - * no object! - */ - CERROR("Cross-ref object doesn't exist!\n"); - rc = -EFAULT; - } else { - /* Something is wrong here, the object is on another MDS! */ - CERROR("The object isn't on this server! FLD error?\n"); - LU_OBJECT_DEBUG(D_WARNING, info->mti_env, - &o->mot_obj.mo_lu, - "Object isn't on this server! FLD error?\n"); - + if (mdt_object_remote(o)) { + /* Something is wrong here, the object is on another MDS! */ + CERROR("%s: "DFID" isn't on this server!: rc = %d\n", + mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT); + LU_OBJECT_DEBUG(D_WARNING, info->mti_env, + &o->mot_obj.mo_lu, + "Object isn't on this server! FLD error?\n"); rc = -EFAULT; + } else { + if (mdt_object_exists(o)) { + /* Do permission check for cross-open. */ + rc = mo_permission(info->mti_env, NULL, + mdt_object_child(o), + NULL, flags | MDS_OPEN_CROSS); + if (rc) + goto out; + + mdt_set_capainfo(info, 0, fid, BYPASS_CAPA); + rc = mdt_attr_get_complex(info, o, ma); + if (rc != 0) + GOTO(out, rc); + + /* Do not create lov object if the fid is opened + * under OBF */ + if (S_ISREG(ma->ma_attr.la_mode) && + !(ma->ma_valid & MA_LOV) && (flags & FMODE_WRITE) && + fid_is_obf(parent_fid)) + GOTO(out, rc = -EPERM); + + rc = mdt_finish_open(info, NULL, o, flags, 0, rep); + } else { + /* + * Something is wrong here. lookup was positive but + * there is no object! + */ + CERROR("%s: "DFID" doesn't exist!: rc = %d\n", + mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT); + rc = -EFAULT; + } } - out: mdt_object_put(info->mti_env, o); RETURN(rc); @@ -1230,6 +1427,7 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) struct lu_fid *child_fid = &info->mti_tmp_fid1; struct md_attr *ma = &info->mti_attr; __u64 create_flags = info->mti_spec.sp_cr_flags; + __u64 ibits; struct mdt_reint_record *rr = &info->mti_rr; struct lu_name *lname; int result, rc; @@ -1240,7 +1438,7 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE, (obd_timeout + 1) / 4); - mdt_counter_incr(req->rq_export, LPROC_MDT_OPEN); + mdt_counter_incr(req, LPROC_MDT_OPEN); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD); @@ -1270,34 +1468,53 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) PFID(rr->rr_fid1), rr->rr_name, PFID(rr->rr_fid2), create_flags, ma->ma_attr.la_mode, msg_flags); - - if (req_is_replay(req) || - (req->rq_export->exp_libclient && create_flags&MDS_OPEN_HAS_EA)) { - /* This is a replay request or from liblustre with ea. */ - result = mdt_open_by_fid(info, ldlm_rep); - - if (result != -ENOENT) { - if (req->rq_export->exp_libclient && - create_flags & MDS_OPEN_HAS_EA) - GOTO(out, result = 0); - GOTO(out, result); - } - /* - * We didn't find the correct object, so we need to re-create it - * via a regular replay. - */ - if (!(create_flags & MDS_OPEN_CREAT)) { - DEBUG_REQ(D_ERROR, req, - "OPEN & CREAT not in open replay."); - GOTO(out, result = -EFAULT); - } - CDEBUG(D_INFO, "Open replay did find object, continue as " - "regular open\n"); - } else if (rr->rr_namelen == 0 && !info->mti_cross_ref && - create_flags & MDS_OPEN_LOCK) { - result = mdt_open_anon_by_fid(info, ldlm_rep, lhc); - GOTO(out, result); - } + if (info->mti_cross_ref) { + /* This is cross-ref open */ + mdt_set_disposition(info, ldlm_rep, + (DISP_IT_EXECD | DISP_LOOKUP_EXECD | + DISP_LOOKUP_POS)); + result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1, + ldlm_rep, create_flags); + GOTO(out, result); + } else if (req_is_replay(req) || + (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) { + /* This is a replay request or from liblustre with ea. */ + result = mdt_open_by_fid(info, ldlm_rep); + + if (result != -ENOENT) { + if (req->rq_export->exp_libclient && + create_flags & MDS_OPEN_HAS_EA) + GOTO(out, result = 0); + GOTO(out, result); + } + /* We didn't find the correct object, so we need to re-create it + * via a regular replay. */ + if (!(create_flags & MDS_OPEN_CREAT)) { + DEBUG_REQ(D_ERROR, req, + "OPEN & CREAT not in open replay/by_fid."); + GOTO(out, result = -EFAULT); + } + CDEBUG(D_INFO, "No object(1), continue as regular open.\n"); + } else if ((rr->rr_namelen == 0 && create_flags & MDS_OPEN_LOCK) || + (create_flags & MDS_OPEN_BY_FID)) { + result = mdt_open_by_fid_lock(info, ldlm_rep, lhc); + /* If result is 0 then open by FID has found the file + * and there is nothing left for us to do here. More + * generally if it is anything other than -ENOENT or + * -EREMOTE then we return that now. If -ENOENT and + * MDS_OPEN_CREAT is set then we must create the file + * below. If -EREMOTE then we need to return a LOOKUP + * lock to the client, which we do below. Hence this + * odd looking condition. See LU-2523. */ + if (!(result == -ENOENT && (create_flags & MDS_OPEN_CREAT)) && + result != -EREMOTE) + GOTO(out, result); + + if (unlikely(rr->rr_namelen == 0)) + GOTO(out, result = -EINVAL); + + CDEBUG(D_INFO, "No object(2), continue as regular open.\n"); + } if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) GOTO(out, result = err_serious(-ENOMEM)); @@ -1305,14 +1522,6 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) mdt_set_disposition(info, ldlm_rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD)); - if (info->mti_cross_ref) { - /* This is cross-ref open */ - mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS); - result = mdt_cross_open(info, rr->rr_fid1, ldlm_rep, - create_flags); - GOTO(out, result); - } - lh = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ? LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen); @@ -1354,15 +1563,18 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) *child_fid = *info->mti_rr.rr_fid2; LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n", PFID(child_fid)); - } else { - /* - * Check for O_EXCL is moved to the mdt_finish_open(), we need to - * return FID back in that case. - */ - mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS); - } - - child = mdt_object_find(info->mti_env, mdt, child_fid); + /* In the function below, .hs_keycmp resolves to + * lu_obj_hop_keycmp() */ + /* coverity[overrun-buffer-val] */ + child = mdt_object_new(info->mti_env, mdt, child_fid); + } else { + /* + * Check for O_EXCL is moved to the mdt_finish_open(), we need to + * return FID back in that case. + */ + mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS); + child = mdt_object_find(info->mti_env, mdt, child_fid); + } if (IS_ERR(child)) GOTO(out_parent, result = PTR_ERR(child)); @@ -1373,8 +1585,9 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); if (result == -ENOENT) { - if (mdt_object_obf(parent)) - GOTO(out_child, result = -EPERM); + /* Create under OBF and .lustre is not permitted */ + if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1)) + GOTO(out_child, result = -EPERM); /* save versions in reply */ mdt_version_get_save(info, parent, 0); @@ -1407,18 +1620,20 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE); GOTO(out_child, result); } else { + + /* XXX: we should call this once, see few lines below */ + if (result == 0) + result = mdt_attr_get_complex(info, child, ma); + if (result != 0) GOTO(out_child, result); } created = 1; } else { - /* We have to get attr & lov ea for this object */ - result = mo_attr_get(info->mti_env, mdt_object_child(child), - ma); /* * The object is on remote node, return its FID for remote open. */ - if (result == -EREMOTE) { + if (mdt_object_remote(child)) { /* * Check if this lock already was sent to client and * this is resent case. For resent case do not take lock @@ -1453,68 +1668,66 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); if (rc != 0) result = rc; + else + result = -EREMOTE; GOTO(out_child, result); - } + } else { + if (mdt_object_exists(child)) { + /* We have to get attr & LOV EA & HSM for this + * object */ + ma->ma_need |= MA_HSM; + result = mdt_attr_get_complex(info, child, ma); + } else { + /*object non-exist!!!*/ + LBUG(); + } + } } LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh)); - /* get openlock if this is not replay and if a client requested it */ - if (!req_is_replay(req) && create_flags & MDS_OPEN_LOCK) { - ldlm_mode_t lm; - - if (create_flags & FMODE_WRITE) - lm = LCK_CW; - else if (create_flags & MDS_FMODE_EXEC) - lm = LCK_PR; - else - lm = LCK_CR; - mdt_lock_handle_init(lhc); - mdt_lock_reg_init(lhc, lm); - rc = mdt_object_lock(info, child, lhc, - MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN, - MDT_CROSS_LOCK); - if (rc) { - result = rc; - GOTO(out_child, result); - } else { - result = -EREMOTE; - mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK); - } - } - - /* Try to open it now. */ - rc = mdt_finish_open(info, parent, child, create_flags, - created, ldlm_rep); - if (rc) { - result = rc; - if (lustre_handle_is_used(&lhc->mlh_reg_lh)) - /* openlock was acquired and mdt_finish_open failed - - drop the openlock */ - mdt_object_unlock(info, child, lhc, 1); - if (created) { - ma->ma_need = 0; - ma->ma_valid = 0; - ma->ma_cookie_size = 0; - info->mti_no_need_trans = 1; - rc = mdo_unlink(info->mti_env, - mdt_object_child(parent), - mdt_object_child(child), - lname, - &info->mti_attr); - if (rc != 0) - CERROR("Error in cleanup of open\n"); - } - } + /* get openlock if this is not replay and if a client requested it */ + if (!req_is_replay(req)) { + rc = mdt_object_open_lock(info, child, lhc, &ibits); + if (rc != 0) + GOTO(out_child, result = rc); + else if (create_flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK); + } + + /* Try to open it now. */ + rc = mdt_finish_open(info, parent, child, create_flags, + created, ldlm_rep); + if (rc) { + result = rc; + /* openlock will be released if mdt_finish_open failed */ + mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK); + if (created) { + ma->ma_need = 0; + ma->ma_valid = 0; + ma->ma_cookie_size = 0; + rc = mdo_unlink(info->mti_env, + mdt_object_child(parent), + mdt_object_child(child), + lname, + &info->mti_attr, 0); + if (rc != 0) + CERROR("%s: "DFID" cleanup of open: rc = %d\n", + mdt_obd_name(info->mti_mdt), + PFID(mdt_object_fid(child)), rc); + mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE); + } + } EXIT; out_child: + mdt_object_open_unlock(info, child, lhc, ibits, result); mdt_object_put(info->mti_env, child); out_parent: mdt_object_unlock_put(info, parent, lh, result || !created); out: - if (result && result != -EREMOTE) - lustre_msg_set_transno(req->rq_repmsg, 0); - return result; + if (result) + lustre_msg_set_transno(req->rq_repmsg, 0); + return result; } #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \ @@ -1557,6 +1770,24 @@ int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd) rc = mo_attr_set(info->mti_env, next, ma); } + /* If file data is modified, add the dirty flag. + * + * If MDS_CLOSE_CLEANUP is set, this file is being closed due to an + * eviction, file could have been modified and now dirty + * regarding to HSM archive, check this! + * The logic here is to mark a file dirty if there's a chance it was + * dirtied before the client was evicted, so that we don't have to wait + * for a release attempt before finding out the file was actually dirty + * and fail the release. Aggressively marking it dirty here will cause + * the policy engine to attempt to re-archive it; when rearchiving, we + * can compare the current version to the LMA data_version and make the + * archive request into a noop if it's not actually dirty. + */ + if ((ma->ma_attr_flags & MDS_DATA_MODIFIED) || + ((ma->ma_attr_flags & MDS_CLOSE_CLEANUP) && + (mode & (FMODE_WRITE|MDS_FMODE_TRUNC)))) + rc = mdt_add_dirty_flag(info, o, ma); + ma->ma_need |= MA_INODE; ma->ma_valid &= ~MA_INODE; @@ -1574,10 +1805,10 @@ int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd) LASSERT(mdt_info_req(info)); med = &mdt_info_req(info)->rq_export->exp_mdt_data; - cfs_spin_lock(&med->med_open_lock); - cfs_list_add(&mfd->mfd_list, &med->med_open_head); - class_handle_hash_back(&mfd->mfd_handle); - cfs_spin_unlock(&med->med_open_lock); + spin_lock(&med->med_open_lock); + cfs_list_add(&mfd->mfd_list, &med->med_open_head); + class_handle_hash_back(&mfd->mfd_handle); + spin_unlock(&med->med_open_lock); if (ret == MDT_IOEPOCH_OPENED) { ret = 0; @@ -1605,7 +1836,7 @@ int mdt_close(struct mdt_thread_info *info) int rc, ret = 0; ENTRY; - mdt_counter_incr(req->rq_export, LPROC_MDT_CLOSE); + mdt_counter_incr(req, LPROC_MDT_CLOSE); /* Close may come with the Size-on-MDS update. Unpack it. */ rc = mdt_close_unpack(info); if (rc) @@ -1622,6 +1853,7 @@ int mdt_close(struct mdt_thread_info *info) mdt_client_compatibility(info); if (rc == 0) mdt_fix_reply(info); + mdt_exit_ucred(info); RETURN(lustre_msg_get_status(req->rq_repmsg)); } @@ -1647,19 +1879,19 @@ int mdt_close(struct mdt_thread_info *info) } med = &req->rq_export->exp_mdt_data; - cfs_spin_lock(&med->med_open_lock); - mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); - if (mdt_mfd_closed(mfd)) { - cfs_spin_unlock(&med->med_open_lock); - CDEBUG(D_INODE, "no handle for file close: fid = "DFID - ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1), - info->mti_ioepoch->handle.cookie); - /** not serious error since bug 3633 */ - rc = -ESTALE; - } else { - class_handle_unhash(&mfd->mfd_handle); - cfs_list_del_init(&mfd->mfd_list); - cfs_spin_unlock(&med->med_open_lock); + spin_lock(&med->med_open_lock); + mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); + if (mdt_mfd_closed(mfd)) { + spin_unlock(&med->med_open_lock); + CDEBUG(D_INODE, "no handle for file close: fid = "DFID + ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1), + info->mti_ioepoch->handle.cookie); + /** not serious error since bug 3633 */ + rc = -ESTALE; + } else { + class_handle_unhash(&mfd->mfd_handle); + cfs_list_del_init(&mfd->mfd_list); + spin_unlock(&med->med_open_lock); /* Do not lose object before last unlink. */ o = mfd->mfd_object; @@ -1675,6 +1907,7 @@ int mdt_close(struct mdt_thread_info *info) rc = mdt_fix_reply(info); } + mdt_exit_ucred(info); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) RETURN(err_serious(-ENOMEM)); @@ -1715,14 +1948,16 @@ int mdt_done_writing(struct mdt_thread_info *info) if (rc) RETURN(err_serious(rc)); - if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) - RETURN(lustre_msg_get_status(req->rq_repmsg)); + if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) { + mdt_exit_ucred(info); + RETURN(lustre_msg_get_status(req->rq_repmsg)); + } med = &info->mti_exp->exp_mdt_data; - cfs_spin_lock(&med->med_open_lock); - mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); - if (mfd == NULL) { - cfs_spin_unlock(&med->med_open_lock); + spin_lock(&med->med_open_lock); + mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); + if (mfd == NULL) { + spin_unlock(&med->med_open_lock); CDEBUG(D_INODE, "no handle for done write: fid = "DFID ": cookie = "LPX64" ioepoch = "LPU64"\n", PFID(info->mti_rr.rr_fid1), @@ -1733,16 +1968,16 @@ int mdt_done_writing(struct mdt_thread_info *info) rc = info->mti_ioepoch->flags & MF_SOM_AU ? -EAGAIN : 0; mdt_empty_transno(info, rc); - RETURN(rc); - } - RETURN(-ESTALE); + } else + rc = -ESTALE; + GOTO(error_ucred, rc); } LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH || mfd->mfd_mode == MDS_FMODE_TRUNC); class_handle_unhash(&mfd->mfd_handle); cfs_list_del_init(&mfd->mfd_list); - cfs_spin_unlock(&med->med_open_lock); + spin_unlock(&med->med_open_lock); /* Set EPOCH CLOSE flag if not set by client. */ info->mti_ioepoch->flags |= MF_EPOCH_CLOSE; @@ -1750,12 +1985,14 @@ int mdt_done_writing(struct mdt_thread_info *info) info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize; OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize); - if (info->mti_attr.ma_lmm == NULL) - RETURN(-ENOMEM); + if (info->mti_attr.ma_lmm == NULL) + GOTO(error_ucred, rc = -ENOMEM); rc = mdt_mfd_close(info, mfd); OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize); mdt_empty_transno(info, rc); - RETURN(rc); +error_ucred: + mdt_exit_ucred(info); + RETURN(rc); }