X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdt%2Fmdt_open.c;h=9bd929f62ad4da42c19916acc598966ed50e4705;hp=d1fe09725abc4e4d91aa348696b721996a5e4a52;hb=1bf196aaf5adb9a1c67886c0cd6a780ec6838040;hpb=3402e6c6517cc15f159b19bf4462279285cd83f2 diff --git a/lustre/mdt/mdt_open.c b/lustre/mdt/mdt_open.c index d1fe097..9bd929f 100644 --- a/lustre/mdt/mdt_open.c +++ b/lustre/mdt/mdt_open.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, Whamcloud, Inc. + * Copyright (c) 2011, 2015, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -45,6 +41,7 @@ #include #include #include "mdt_internal.h" +#include /* we do nothing because we do not have refcount now */ static void mdt_mfd_get(void *mfdp) @@ -58,509 +55,138 @@ static struct portals_handle_ops mfd_handle_ops = { /* Create a new mdt_file_data struct, initialize it, * and insert it to global hash table */ -struct mdt_file_data *mdt_mfd_new(void) +struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med) { - struct mdt_file_data *mfd; - ENTRY; - - OBD_ALLOC_PTR(mfd); - if (mfd != NULL) { - CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link); - CFS_INIT_LIST_HEAD(&mfd->mfd_list); + struct mdt_file_data *mfd; + ENTRY; + + OBD_ALLOC_PTR(mfd); + if (mfd != NULL) { + INIT_LIST_HEAD(&mfd->mfd_handle.h_link); + mfd->mfd_handle.h_owner = med; + INIT_LIST_HEAD(&mfd->mfd_list); class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops); - } - RETURN(mfd); + } + + RETURN(mfd); } /* * Find the mfd pointed to by handle in global hash table. * In case of replay the handle is obsoleted - * but mfd can be found in mfd list by that handle + * but mfd can be found in mfd list by that handle. + * Callers need to be holding med_open_lock. */ -struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *info, - const struct lustre_handle *handle) +struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med, + const struct lustre_handle *handle, + bool is_replay_or_resent) { - struct ptlrpc_request *req = mdt_info_req(info); - struct mdt_file_data *mfd; - ENTRY; + struct mdt_file_data *mfd; + ENTRY; + + LASSERT(handle != NULL); + mfd = class_handle2object(handle->cookie, med); + /* during dw/setattr replay the mfd can be found by old handle */ + if (mfd == NULL && is_replay_or_resent) { + list_for_each_entry(mfd, &med->med_open_head, mfd_list) { + if (mfd->mfd_old_handle.cookie == handle->cookie) + RETURN(mfd); + } + mfd = NULL; + } - LASSERT(handle != NULL); - mfd = class_handle2object(handle->cookie); - /* during dw/setattr replay the mfd can be found by old handle */ - if (mfd == NULL && req_is_replay(req)) { - struct mdt_export_data *med = &req->rq_export->exp_mdt_data; - cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) { - if (mfd->mfd_old_handle.cookie == handle->cookie) - RETURN (mfd); - } - mfd = NULL; - } - RETURN (mfd); + RETURN(mfd); } /* free mfd */ void mdt_mfd_free(struct mdt_file_data *mfd) { - LASSERT(cfs_list_empty(&mfd->mfd_list)); - OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle); + LASSERT(list_empty(&mfd->mfd_list)); + OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle); } 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); + 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_lov_created) { + 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; - } - cfs_mutex_unlock(&o->mot_lov_mutex); - RETURN(rc); -} - -static int mdt_ioepoch_opened(struct mdt_object *mo) -{ - return mo->mot_ioepoch_count; -} - -int mdt_object_is_som_enabled(struct mdt_object *mo) -{ - return !mo->mot_ioepoch; -} - -/** - * Re-enable Size-on-MDS. - * Call under ->mot_ioepoch_mutex. - */ -static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch) -{ - if (ioepoch == mo->mot_ioepoch) { - LASSERT(!mdt_ioepoch_opened(mo)); - mo->mot_ioepoch = 0; - mo->mot_flags = 0; - } -} - -/** - * Open the IOEpoch. It is allowed if @writecount is not negative. - * The epoch and writecount handling is performed under the mot_ioepoch_mutex. - */ -int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o, - int created) -{ - struct mdt_device *mdt = info->mti_mdt; - int cancel = 0; - int rc = 0; - ENTRY; - - if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) || - !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); - if (mdt->mdt_ioepoch < info->mti_replayepoch) - mdt->mdt_ioepoch = info->mti_replayepoch; - - if (info->mti_replayepoch) - o->mot_ioepoch = info->mti_replayepoch; - else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL) - o->mot_ioepoch = ++mdt->mdt_ioepoch; - else - o->mot_ioepoch = mdt->mdt_ioepoch; - - cfs_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); - - /* Cancel Size-on-MDS attributes cached on clients for the open case. - * In the truncate case, see mdt_reint_setattr(). */ - if (cancel && (info->mti_rr.rr_fid1 != NULL)) { - struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD]; - mdt_lock_reg_init(lh, LCK_EX); - rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE, - MDT_LOCAL_LOCK); - if (rc == 0) - mdt_object_unlock(info, o, lh, 1); - } - RETURN(rc); -} - -/** - * 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. - * 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 lustre_mdt_attrs *lma; - struct md_attr *ma = &info->mti_attr; - struct lu_buf *buf = &info->mti_buf; - struct md_object *next = mdt_object_child(obj); - struct mdt_device *mdt = info->mti_mdt; - struct lu_attr *la = &ma->ma_attr; - 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))); - - lma = (struct lustre_mdt_attrs *) info->mti_xattr_buf; - CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*lma)); - - buf->lb_buf = lma; - buf->lb_len = sizeof(info->mti_xattr_buf); - rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LMA); - if (rc > 0) { - lustre_lma_swab(lma); - } else if (rc == -ENODATA) { - memset(lma, 0, sizeof(*lma)); - } else { - RETURN(rc); + if (rc == 0 && ma->ma_valid & MA_LOV) + o->mot_lov_created = 1; } - /* Copy FID */ - memcpy(&lma->lma_self_fid, mdt_object_fid(obj), sizeof(lma->lma_self_fid)); - - /* Copy SOM data */ - lma->lma_ioepoch = ioepoch; - lma->lma_som_size = la->la_valid & LA_SIZE ? la->la_size : 0; - lma->lma_som_blocks = la->la_valid & LA_BLOCKS ? la->la_blocks : 0; - lma->lma_som_mountid = mdt->mdt_lut.lut_obd->u.obt.obt_mount_count; - if (enable) - lma->lma_compat |= LMAC_SOM; - else - lma->lma_compat &= ~LMAC_SOM; - - rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_LMA, 0); - - RETURN(rc); -} - -/** Perform the eviction specific actions on ioepoch close. */ -static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info, - struct mdt_object *o) -{ - int rc = 0; - - cfs_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); - o->mot_ioepoch_count--; - - /* If eviction occured set MOF_SOM_RECOV, - * if no other epoch holders, disable SOM on disk. */ - o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV; - if (!mdt_ioepoch_opened(o)) { - 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); - RETURN(rc); -} - -/** - * Perform the replay specific actions on ioepoch close. - * Skip SOM attribute update if obtained and just forget about the inode state - * for the last ioepoch holder. The SOM cache is invalidated on MDS failure. - */ -static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info, - struct mdt_object *o) -{ - int rc = MDT_IOEPOCH_CLOSED; - ENTRY; - - cfs_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--; - - /* Get an info from the replayed request if client is supposed - * to send an Attibute Update, reconstruct @rc if so */ - if (info->mti_ioepoch->flags & MF_SOM_AU) - rc = MDT_IOEPOCH_GETATTR; - - if (!mdt_ioepoch_opened(o)) - mdt_object_som_enable(o, info->mti_ioepoch->ioepoch); - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - - RETURN(rc); -} - -/** - * Regular file IOepoch close. - * Closes the ioepoch, checks the object state, apply obtained attributes and - * re-enable SOM on the object, if possible. Also checks if the recovery is - * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client - * to obtain SOM attributes under the server-side OST locks. - * - * Return value: - * MDT_IOEPOCH_CLOSED if ioepoch is closed. - * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed. - */ -static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info, - struct mdt_object *o) -{ - struct md_attr *tmp_ma; - struct lu_attr *la; - int achange, opened; - int recovery = 0; - int rc = 0, ret = MDT_IOEPOCH_CLOSED; - ENTRY; - - la = &info->mti_attr.ma_attr; - achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE); - - cfs_mutex_lock(&o->mot_ioepoch_mutex); - o->mot_ioepoch_count--; - - tmp_ma = &info->mti_u.som.attr; - tmp_ma->ma_lmm = info->mti_attr.ma_lmm; - tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size; - 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 = mdt_attr_get_complex(info, o, tmp_ma); - if (rc) - GOTO(error_up, rc); - - /* Check the on-disk SOM state. */ - if (o->mot_flags & MOF_SOM_RECOV) - recovery = 1; - else if (!(o->mot_flags & MOF_SOM_CREATED) && - !(tmp_ma->ma_valid & MA_SOM)) - recovery = 1; - - CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n", - o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count); - - opened = mdt_ioepoch_opened(o); - /** - * If IOEpoch is not opened, check if a Size-on-MDS update is needed. - * Skip the check for file with no LOV or for unlink files. - */ - if (!opened && tmp_ma->ma_valid & MA_LOV && - !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) { - if (recovery) - /* If some previous writer was evicted, re-ask the - * client for attributes. Even if attributes are - * provided, we cannot believe in them. - * Another use case is that there is no SOM cache on - * disk -- first access with SOM or there was an MDS - * failure. */ - ret = MDT_IOEPOCH_GETATTR; - else if (o->mot_flags & MOF_SOM_CHANGE) - /* Some previous writer changed the attribute. - * Do not believe to the current Size-on-MDS - * update, re-ask client. */ - ret = MDT_IOEPOCH_GETATTR; - else if (!(la->la_valid & LA_SIZE) && achange) - /* Attributes were changed by the last writer - * only but no Size-on-MDS update is received.*/ - ret = MDT_IOEPOCH_GETATTR; - } - - if (achange || ret == MDT_IOEPOCH_GETATTR) - o->mot_flags |= MOF_SOM_CHANGE; - - /* If epoch ends and relable SOM attributes are obtained, update them. - * Create SOM ea for new files even if there is no attributes obtained - * (0-length file). */ - if (ret == MDT_IOEPOCH_CLOSED && !opened) { - if (achange || o->mot_flags & MOF_SOM_CREATED) { - LASSERT(achange || !(la->la_valid & LA_SIZE)); - rc = mdt_som_attr_set(info, o, o->mot_ioepoch, - MDT_SOM_ENABLE); - /* Avoid the following setattrs of these attributes, - * e.g. for atime update. */ - info->mti_attr.ma_valid = 0; - } - mdt_object_som_enable(o, o->mot_ioepoch); - } - - cfs_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) { - struct mdt_body *rep; - rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); - rep->valid |= OBD_MD_FLGETATTRLOCK; - } - - RETURN(rc ? : ret); - -error_up: - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - return rc; -} - -/** - * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if: - * - a client closes the IOEpoch; - * - a client eviction occured. - * Return values: - * MDT_IOEPOCH_OPENED if the client does not close IOEpoch. - * MDT_IOEPOCH_CLOSED if the client closes IOEpoch. - * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute - * update is needed. - */ -static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o) -{ - struct ptlrpc_request *req = mdt_info_req(info); - ENTRY; - - if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) || - !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) - RETURN(0); - - LASSERT(o->mot_ioepoch_count); - LASSERT(info->mti_ioepoch == NULL || - info->mti_ioepoch->ioepoch == o->mot_ioepoch); - - /* IOEpoch is closed only if client tells about it or eviction occures. - * In the replay case, always close the epoch. */ - if (req == NULL) - RETURN(mdt_ioepoch_close_on_eviction(info, o)); - if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) - RETURN(mdt_ioepoch_close_on_replay(info, o)); - if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE) - RETURN(mdt_ioepoch_close_reg(info, o)); - /* IO epoch is not closed. */ - RETURN(MDT_IOEPOCH_OPENED); -} - -/** - * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting - * for attribute update. It happens if: - * - SOM Attribute Update is obtained; - * - the client failed to obtain it and informs MDS about it; - * - a client eviction occured. - * Apply obtained attributes for the 1st case, wipe out the on-disk SOM - * cache otherwise. - */ -int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o) -{ - struct ptlrpc_request *req = mdt_info_req(info); - __u64 ioepoch = 0; - int act = MDT_SOM_ENABLE; - int rc = 0; - ENTRY; - - LASSERT(!req || info->mti_ioepoch); - if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) || - !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) - RETURN(0); - - /* No size whereas MF_SOM_CHANGE is set means client failed to - * obtain ost attributes, drop the SOM cache on disk if so. */ - if (!req || - (info->mti_ioepoch && - info->mti_ioepoch->flags & MF_SOM_CHANGE && - !(info->mti_attr.ma_attr.la_valid & LA_SIZE))) - act = MDT_SOM_DISABLE; - - cfs_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) - o->mot_flags |= MOF_SOM_RECOV; - - if (!mdt_ioepoch_opened(o)) { - ioepoch = info->mti_ioepoch ? - info->mti_ioepoch->ioepoch : o->mot_ioepoch; - - if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)) - rc = mdt_som_attr_set(info, o, ioepoch, act); - mdt_object_som_enable(o, ioepoch); - } - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - RETURN(rc); + mutex_unlock(&o->mot_lov_mutex); + RETURN(rc); } int mdt_write_read(struct mdt_object *o) { - int rc = 0; - ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); - rc = o->mot_writecount; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - RETURN(rc); + int rc = 0; + ENTRY; + spin_lock(&o->mot_write_lock); + rc = o->mot_write_count; + spin_unlock(&o->mot_write_lock); + RETURN(rc); } int mdt_write_get(struct mdt_object *o) { - int rc = 0; - ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); - if (o->mot_writecount < 0) - rc = -ETXTBSY; - else - o->mot_writecount++; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - RETURN(rc); + int rc = 0; + ENTRY; + spin_lock(&o->mot_write_lock); + if (o->mot_write_count < 0) + rc = -ETXTBSY; + else + o->mot_write_count++; + spin_unlock(&o->mot_write_lock); + + RETURN(rc); } void mdt_write_put(struct mdt_object *o) { - ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); - o->mot_writecount--; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - EXIT; + ENTRY; + spin_lock(&o->mot_write_lock); + o->mot_write_count--; + spin_unlock(&o->mot_write_lock); + EXIT; } static int mdt_write_deny(struct mdt_object *o) { - int rc = 0; - ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); - if (o->mot_writecount > 0) - rc = -ETXTBSY; - else - o->mot_writecount--; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - RETURN(rc); + int rc = 0; + ENTRY; + spin_lock(&o->mot_write_lock); + if (o->mot_write_count > 0) + rc = -ETXTBSY; + else + o->mot_write_count--; + spin_unlock(&o->mot_write_lock); + RETURN(rc); } static void mdt_write_allow(struct mdt_object *o) { - ENTRY; - cfs_mutex_lock(&o->mot_ioepoch_mutex); - o->mot_writecount++; - cfs_mutex_unlock(&o->mot_ioepoch_mutex); - EXIT; + ENTRY; + spin_lock(&o->mot_write_lock); + o->mot_write_count++; + spin_unlock(&o->mot_write_lock); + EXIT; } /* there can be no real transaction so prepare the fake one */ @@ -576,54 +202,66 @@ 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 (tgt_is_multimodrpcs_client(req->rq_export)) { + struct thandle *th; + + /* generate an empty transaction to get a transno + * and reply data */ + th = dt_trans_create(info->mti_env, mdt->mdt_bottom); + if (!IS_ERR(th)) { + rc = dt_trans_start(info->mti_env, mdt->mdt_bottom, th); + dt_trans_stop(info->mti_env, mdt->mdt_bottom, th); + } + RETURN_EXIT; + } + + 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); + CERROR("%s: replay trans %llu NID %s: rc = %d\n", + mdt_obd_name(mdt), info->mti_transno, + libcfs_nid2str(exp->exp_connection->c_peer.nid), + rc); + spin_unlock(&mdt->mdt_lut.lut_translock); 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; + 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_unlock(&mdt->mdt_lut.lut_translock); - CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n", - info->mti_transno, - req->rq_export->exp_obd->obd_last_committed); + CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n", + info->mti_transno, + req->rq_export->exp_obd->obd_last_committed); - req->rq_transno = info->mti_transno; - lustre_msg_set_transno(req->rq_repmsg, info->mti_transno); + req->rq_transno = info->mti_transno; + lustre_msg_set_transno(req->rq_repmsg, info->mti_transno); - /* update lcd in memory only for resent cases */ - ted = &req->rq_export->exp_target_data; - LASSERT(ted); - cfs_mutex_lock(&ted->ted_lcd_lock); - lcd = ted->ted_lcd; + /* update lcd in memory only for resent cases */ + ted = &req->rq_export->exp_target_data; + LASSERT(ted); + 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 */ - cfs_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); + mutex_unlock(&ted->ted_lcd_lock); + CDEBUG(D_HA, "%s: transno = %llu < last_transno = %llu\n", + mdt_obd_name(mdt), 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 (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) { if (info->mti_transno != 0) lcd->lcd_last_close_transno = info->mti_transno; lcd->lcd_last_close_xid = req->rq_xid; @@ -644,23 +282,51 @@ static void mdt_empty_transno(struct mdt_thread_info *info, int rc) 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; } -void mdt_mfd_set_mode(struct mdt_file_data *mfd, int mode) +void mdt_mfd_set_mode(struct mdt_file_data *mfd, __u64 mode) { - LASSERT(mfd != NULL); + LASSERT(mfd != NULL); - CDEBUG(D_HA, "Change mfd %p mode 0x%x->0x%x\n", - mfd, (unsigned int)mfd->mfd_mode, (unsigned int)mode); + CDEBUG(D_HA, DFID " Change mfd mode %#llo -> %#llo.\n", + PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_mode, mode); - mfd->mfd_mode = mode; + mfd->mfd_mode = mode; +} + +/** + * prep ma_lmm/ma_lmv for md_attr from reply + */ +static void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info, + struct mdt_object *obj, + struct md_attr *ma) +{ + LASSERT(ma->ma_lmv == NULL && ma->ma_lmm == NULL); + if (S_ISDIR(obj->mot_header.loh_attr)) { + ma->ma_lmv = req_capsule_server_get(info->mti_pill, + &RMF_MDT_MD); + ma->ma_lmv_size = req_capsule_get_size(info->mti_pill, + &RMF_MDT_MD, + RCL_SERVER); + if (ma->ma_lmv_size > 0) + ma->ma_need |= MA_LMV; + } else { + ma->ma_lmm = req_capsule_server_get(info->mti_pill, + &RMF_MDT_MD); + ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, + &RMF_MDT_MD, + RCL_SERVER); + if (ma->ma_lmm_size > 0) + ma->ma_need |= MA_LOV; + } } static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, - struct mdt_object *o, __u64 flags, int created) + struct mdt_object *o, __u64 flags, int created, + struct ldlm_reply *rep) { struct ptlrpc_request *req = mdt_info_req(info); struct mdt_export_data *med = &req->rq_export->exp_mdt_data; @@ -675,7 +341,7 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, isreg = S_ISREG(la->la_mode); isdir = S_ISDIR(la->la_mode); - if (isreg && !(ma->ma_valid & MA_LOV)) { + if (isreg && !(ma->ma_valid & MA_LOV) && !(flags & MDS_OPEN_RELEASE)) { /* * No EA, check whether it is will set regEA and dirEA since in * above attr get, these size might be zero, so reset it, to @@ -688,135 +354,160 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, rc = mdt_create_data(info, p, o); if (rc) RETURN(rc); + + if (exp_connect_flags(req->rq_export) & OBD_CONNECT_DISP_STRIPE) + mdt_set_disposition(info, rep, DISP_OPEN_STRIPE); } - CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n", - ma->ma_valid, ma->ma_lmm_size); + CDEBUG(D_INODE, "after open, ma_valid bit = %#llx lmm_size = %d\n", + ma->ma_valid, ma->ma_lmm_size); if (ma->ma_valid & MA_LOV) { LASSERT(ma->ma_lmm_size != 0); - repbody->eadatasize = ma->ma_lmm_size; - if (isdir) - repbody->valid |= OBD_MD_FLDIREA; - else - repbody->valid |= OBD_MD_FLEASIZE; - } + repbody->mbo_eadatasize = ma->ma_lmm_size; + if (isdir) + repbody->mbo_valid |= OBD_MD_FLDIREA; + else + repbody->mbo_valid |= OBD_MD_FLEASIZE; + } + + if (ma->ma_valid & MA_LMV) { + LASSERT(ma->ma_lmv_size != 0); + repbody->mbo_eadatasize = ma->ma_lmv_size; + LASSERT(isdir); + repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA; + } + + if (flags & FMODE_WRITE) + rc = mdt_write_get(o); + else if (flags & MDS_FMODE_EXEC) + rc = mdt_write_deny(o); - if (flags & FMODE_WRITE) { - rc = mdt_write_get(o); - if (rc == 0) { - mdt_ioepoch_open(info, o, created); - repbody->ioepoch = o->mot_ioepoch; - } - } else if (flags & MDS_FMODE_EXEC) { - rc = mdt_write_deny(o); - } if (rc) RETURN(rc); rc = mo_open(info->mti_env, mdt_object_child(o), created ? flags | MDS_OPEN_CREATED : flags); - if (rc) - GOTO(err_out, rc); + if (rc != 0) { + /* If we allow the client to chgrp (CFS_SETGRP_PERM), but the + * client does not know which suppgid should be sent to the MDS, + * or some other(s) changed the target file's GID after this RPC + * sent to the MDS with the suppgid as the original GID, then we + * give the client another chance to send the right suppgid. */ + if (rc == -EACCES && + allow_client_chgrp(info, lu_ucred(info->mti_env))) + mdt_set_disposition(info, rep, DISP_OPEN_DENY); + + GOTO(err_out, rc); + } - mfd = mdt_mfd_new(); - if (mfd != NULL) { - /* - * Keep a reference on this object for this open, and is - * released by mdt_mfd_close(). - */ - mdt_object_get(info->mti_env, o); + mfd = mdt_mfd_new(med); + if (mfd == NULL) + GOTO(err_out, rc = -ENOMEM); + + /* + * Keep a reference on this object for this open, and is + * released by mdt_mfd_close(). + */ + mdt_object_get(info->mti_env, o); + mfd->mfd_object = o; + mfd->mfd_xid = req->rq_xid; + + /* + * @flags is always not zero. At least it should be FMODE_READ, + * FMODE_WRITE or MDS_FMODE_EXEC. + */ + LASSERT(flags != 0); + + /* Open handling. */ + mdt_mfd_set_mode(mfd, flags); + + atomic_inc(&o->mot_open_count); + if (flags & MDS_OPEN_LEASE) + atomic_inc(&o->mot_lease_count); + + /* replay handle */ + if (req_is_replay(req)) { + struct mdt_file_data *old_mfd; + /* Check wheather old cookie already exist in + * the list, becasue when do recovery, client + * might be disconnected from server, and + * restart replay, so there maybe some orphan + * mfd here, we should remove them */ + LASSERT(info->mti_rr.rr_handle != NULL); + spin_lock(&med->med_open_lock); + old_mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle, true); + if (old_mfd != NULL) { + CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", " + "cookie = %#llx\n", mfd, + PFID(mdt_object_fid(mfd->mfd_object)), + info->mti_rr.rr_handle->cookie); + class_handle_unhash(&old_mfd->mfd_handle); + 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; + ma->ma_attr_flags |= MDS_RECOV_OPEN; + mdt_mfd_close(info, old_mfd); + ma->ma_attr_flags &= ~MDS_RECOV_OPEN; + ma->ma_valid &= ~MA_FLAGS; + } else { + spin_unlock(&med->med_open_lock); + CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", " + "cookie = %#llx\n", + PFID(mdt_object_fid(mfd->mfd_object)), + info->mti_rr.rr_handle->cookie); + } - /* - * @flags is always not zero. At least it should be FMODE_READ, - * FMODE_WRITE or MDS_FMODE_EXEC. - */ - LASSERT(flags != 0); - - /* Open handling. */ - mdt_mfd_set_mode(mfd, flags); - - mfd->mfd_object = o; - mfd->mfd_xid = req->rq_xid; - - /* replay handle */ - if (req_is_replay(req)) { - struct mdt_file_data *old_mfd; - /* Check wheather old cookie already exist in - * the list, becasue when do recovery, client - * might be disconnected from server, and - * restart replay, so there maybe some orphan - * mfd here, we should remove them */ - LASSERT(info->mti_rr.rr_handle != NULL); - old_mfd = mdt_handle2mfd(info, info->mti_rr.rr_handle); - if (old_mfd) { - CDEBUG(D_HA, "del orph mfd %p fid=("DFID") " - "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); - /* no attr update for that close */ - la->la_valid = 0; - ma->ma_valid |= MA_FLAGS; - ma->ma_attr_flags |= MDS_RECOV_OPEN; - mdt_mfd_close(info, old_mfd); - ma->ma_attr_flags &= ~MDS_RECOV_OPEN; - ma->ma_valid &= ~MA_FLAGS; - } - CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n", - info->mti_rr.rr_handle->cookie); - mfd->mfd_old_handle.cookie = - info->mti_rr.rr_handle->cookie; - } - 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); - } + CDEBUG(D_HA, "Store old cookie %#llx in new mfd\n", + info->mti_rr.rr_handle->cookie); - mdt_empty_transno(info, rc); - } else { - GOTO(err_out, rc = -ENOMEM); - } + mfd->mfd_old_handle.cookie = info->mti_rr.rr_handle->cookie; + } + + repbody->mbo_handle.cookie = mfd->mfd_handle.h_cookie; + + if (req->rq_export->exp_disconnected) { + spin_lock(&med->med_open_lock); + class_handle_unhash(&mfd->mfd_handle); + list_del_init(&mfd->mfd_list); + spin_unlock(&med->med_open_lock); + mdt_mfd_close(info, mfd); + } else { + spin_lock(&med->med_open_lock); + list_add(&mfd->mfd_list, &med->med_open_head); + spin_unlock(&med->med_open_lock); + } + + mdt_empty_transno(info, rc); RETURN(rc); err_out: - if (flags & FMODE_WRITE) - /* XXX We also need to close io epoch here. - * See LU-1220 - green */ - mdt_write_put(o); - else if (flags & FMODE_EXEC) - mdt_write_allow(o); - return rc; + if (flags & FMODE_WRITE) + mdt_write_put(o); + else if (flags & MDS_FMODE_EXEC) + mdt_write_allow(o); + + return rc; } -int mdt_finish_open(struct mdt_thread_info *info, - struct mdt_object *p, struct mdt_object *o, - __u64 flags, int created, struct ldlm_reply *rep) +static int mdt_finish_open(struct mdt_thread_info *info, + struct mdt_object *p, struct mdt_object *o, + __u64 flags, int created, struct ldlm_reply *rep) { - struct ptlrpc_request *req = mdt_info_req(info); - struct obd_export *exp = req->rq_export; - struct mdt_export_data *med = &req->rq_export->exp_mdt_data; - struct md_attr *ma = &info->mti_attr; - struct lu_attr *la = &ma->ma_attr; - struct mdt_file_data *mfd; - struct mdt_body *repbody; - int rc = 0; - int isreg, isdir, islnk; - cfs_list_t *t; - ENTRY; + struct ptlrpc_request *req = mdt_info_req(info); + struct obd_export *exp = req->rq_export; + struct mdt_export_data *med = &req->rq_export->exp_mdt_data; + struct md_attr *ma = &info->mti_attr; + struct lu_attr *la = &ma->ma_attr; + struct mdt_file_data *mfd; + struct mdt_body *repbody; + int rc = 0; + int isreg, isdir, islnk; + struct list_head *t; + ENTRY; LASSERT(ma->ma_valid & MA_INODE); @@ -827,86 +518,43 @@ 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)); - if (exp_connect_rmtclient(exp)) { - void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL); + /* 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 successful 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); - rc = mdt_pack_remote_perm(info, o, buf); - if (rc) { - repbody->valid &= ~OBD_MD_FLRMTPERM; - repbody->aclsize = 0; - } else { - repbody->valid |= OBD_MD_FLRMTPERM; - repbody->aclsize = sizeof(struct mdt_remote_perm); - } - } -#ifdef CONFIG_FS_POSIX_ACL - else if (exp->exp_connect_flags & 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; - - buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL); - buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL, - RCL_SERVER); - if (buf->lb_len > 0) { - rc = mo_xattr_get(env, next, buf, - XATTR_NAME_ACL_ACCESS); - if (rc < 0) { - if (rc == -ENODATA) { - repbody->aclsize = 0; - repbody->valid |= OBD_MD_FLACL; - rc = 0; - } else if (rc == -EOPNOTSUPP) { - rc = 0; - } else { - CERROR("got acl size: %d\n", rc); - } - } else { - repbody->aclsize = rc; - repbody->valid |= OBD_MD_FLACL; - rc = 0; - } - } - } -#endif + if (flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, rep, DISP_OPEN_LOCK); - if (info->mti_mdt->mdt_opts.mo_mds_capa && - exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) { - struct lustre_capa *capa; + RETURN(-ENOENT); + } - capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1); - LASSERT(capa); - capa->lc_opc = CAPA_OPC_MDS_DEFAULT; - rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0); - if (rc) - 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))) { - struct lustre_capa *capa; - - capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2); - LASSERT(capa); - capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags); - rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0); - if (rc) - RETURN(rc); - repbody->valid |= OBD_MD_FLOSSCAPA; - } +#ifdef CONFIG_FS_POSIX_ACL + if (exp_connect_flags(exp) & OBD_CONNECT_ACL) { + struct lu_nodemap *nodemap = nodemap_get_from_exp(exp); + if (IS_ERR(nodemap)) + RETURN(PTR_ERR(nodemap)); + + rc = mdt_pack_acl2body(info, repbody, o, nodemap); + nodemap_putref(nodemap); + if (rc) + RETURN(rc); + } +#endif /* * 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, @@ -929,39 +577,39 @@ int mdt_finish_open(struct mdt_thread_info *info, RETURN(-EAGAIN); } - 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); + mfd = NULL; + if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { + spin_lock(&med->med_open_lock); + list_for_each(t, &med->med_open_head) { + mfd = 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; - /*set repbody->ea_size for resent case*/ - if (ma->ma_valid & MA_LOV) { - LASSERT(ma->ma_lmm_size != 0); - repbody->eadatasize = ma->ma_lmm_size; - if (isdir) - repbody->valid |= OBD_MD_FLDIREA; - else - repbody->valid |= OBD_MD_FLEASIZE; + repbody->mbo_handle.cookie = mfd->mfd_handle.h_cookie; + /* set repbody->ea_size for resent case */ + if (ma->ma_valid & MA_LOV) { + LASSERT(ma->ma_lmm_size != 0); + repbody->mbo_eadatasize = ma->ma_lmm_size; + if (isdir) + repbody->mbo_valid |= OBD_MD_FLDIREA; + else + repbody->mbo_valid |= OBD_MD_FLEASIZE; } - RETURN(0); - } - } + mdt_set_disposition(info, rep, DISP_OPEN_OPEN); + RETURN(0); + } + } - rc = mdt_mfd_open(info, p, o, flags, created); - RETURN(rc); -} + rc = mdt_mfd_open(info, p, o, flags, created, rep); + if (!rc) + mdt_set_disposition(info, rep, DISP_OPEN_OPEN); -extern void mdt_req_from_lcd(struct ptlrpc_request *req, - struct lsd_client_data *lcd); + RETURN(rc); +} void mdt_reconstruct_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) @@ -970,35 +618,28 @@ void mdt_reconstruct_open(struct mdt_thread_info *info, struct mdt_device *mdt = info->mti_mdt; struct req_capsule *pill = info->mti_pill; struct ptlrpc_request *req = mdt_info_req(info); - struct tg_export_data *ted = &req->rq_export->exp_target_data; - struct lsd_client_data *lcd = ted->ted_lcd; struct md_attr *ma = &info->mti_attr; struct mdt_reint_record *rr = &info->mti_rr; - __u32 flags = info->mti_spec.sp_cr_flags; + __u64 flags = info->mti_spec.sp_cr_flags; struct ldlm_reply *ldlm_rep; struct mdt_object *parent; struct mdt_object *child; struct mdt_body *repbody; int rc; - ENTRY; + __u64 opdata; + ENTRY; LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN); ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP); repbody = req_capsule_server_get(pill, &RMF_MDT_BODY); - 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; - if (ma->ma_lmm_size > 0) - ma->ma_need |= MA_LOV; - - ma->ma_valid = 0; + ma->ma_need = MA_INODE | MA_HSM; + ma->ma_valid = 0; - mdt_req_from_lcd(req, lcd); - mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data); + opdata = mdt_req_from_lrd(req, info->mti_reply_data); + mdt_set_disposition(info, ldlm_rep, opdata); - CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n", + CDEBUG(D_INODE, "This is reconstruct open: disp=%#llx, result=%d\n", ldlm_rep->lock_policy_res1, req->rq_status); if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) && @@ -1023,37 +664,47 @@ void mdt_reconstruct_open(struct mdt_thread_info *info, mdt_export_evict(exp); RETURN_EXIT; } - child = mdt_object_find(env, mdt, rr->rr_fid2); - if (IS_ERR(child)) { - rc = PTR_ERR(child); - LCONSOLE_WARN("Child "DFID" lookup error %d." - " Evicting client %s with export %s.\n", - PFID(mdt_object_fid(child)), rc, - obd_uuid2str(&exp->exp_client_uuid), - obd_export_nid2str(exp)); - mdt_object_put(env, parent); - mdt_export_evict(exp); - RETURN_EXIT; - } - rc = mdt_object_exists(child); - if (rc > 0) { - - 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 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); - } + + child = mdt_object_find(env, mdt, rr->rr_fid2); + if (IS_ERR(child)) { + rc = PTR_ERR(child); + LCONSOLE_WARN("cannot lookup child "DFID": rc = %d; " + "evicting client %s with export %s\n", + PFID(rr->rr_fid2), rc, + obd_uuid2str(&exp->exp_client_uuid), + obd_export_nid2str(exp)); + mdt_object_put(env, parent); + mdt_export_evict(exp); + RETURN_EXIT; + } + + 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->mbo_fid1 = *rr->rr_fid2; + repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS); + rc = 0; + } else { + if (mdt_object_exists(child)) { + mdt_prep_ma_buf_from_rep(info, child, ma); + 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); @@ -1070,10 +721,9 @@ out: LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0)); } -int mdt_open_by_fid(struct mdt_thread_info* info, - struct ldlm_reply *rep) +static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep) { - __u32 flags = info->mti_spec.sp_cr_flags; + __u64 flags = info->mti_spec.sp_cr_flags; struct mdt_reint_record *rr = &info->mti_rr; struct md_attr *ma = &info->mti_attr; struct mdt_object *o; @@ -1084,42 +734,294 @@ 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 = mdt_attr_get_complex(info, 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); + repbody->mbo_fid1 = *rr->rr_fid2; + repbody->mbo_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)); + mdt_prep_ma_buf_from_rep(info, o, ma); + 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_by_fid_lock(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; + enum ldlm_mode lm = LCK_CR; + bool acq_lease = !!(open_flags & MDS_OPEN_LEASE); + bool try_layout = false; + bool create_layout = false; + int rc = 0; + ENTRY; + + *ibits = 0; + mdt_lock_handle_init(lhc); + + if (req_is_replay(mdt_info_req(info))) + RETURN(0); + + if (S_ISREG(lu_object_attr(&obj->mot_obj))) { + 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; + } + + if (acq_lease) { + /* lease open, acquire write mode of open sem */ + down_write(&obj->mot_open_sem); + + /* Lease exists and ask for new lease */ + if (atomic_read(&obj->mot_lease_count) > 0) { + /* only exclusive open is supported, so lease + * are conflicted to each other */ + GOTO(out, rc = -EBUSY); + } + + /* Lease must be with open lock */ + if (!(open_flags & MDS_OPEN_LOCK)) { + CERROR("%s: Request lease for file:"DFID ", but open lock " + "is missed, open_flags = %#llo : rc = %d\n", + mdt_obd_name(info->mti_mdt), + PFID(mdt_object_fid(obj)), open_flags, -EPROTO); + GOTO(out, rc = -EPROTO); + } + + /* XXX: only exclusive open is supported. */ + lm = LCK_EX; + *ibits = MDS_INODELOCK_OPEN; + + /* never grant LCK_EX layout lock to client */ + try_layout = false; + } else { /* normal open */ + /* normal open holds read mode of open sem */ + down_read(&obj->mot_open_sem); + + if (open_flags & MDS_OPEN_LOCK) { + if (open_flags & FMODE_WRITE) + lm = LCK_CW; + else if (open_flags & MDS_FMODE_EXEC) + lm = LCK_PR; + else + lm = LCK_CR; + + *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN; + } else if (atomic_read(&obj->mot_lease_count) > 0) { + if (open_flags & FMODE_WRITE) + lm = LCK_CW; + else + lm = LCK_CR; + + /* revoke lease */ + *ibits = MDS_INODELOCK_OPEN; + try_layout = false; + + lhc = &info->mti_lh[MDT_LH_LOCAL]; + } + CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n", + PFID(mdt_object_fid(obj)), + atomic_read(&obj->mot_open_count), lm); + } + + 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)) { + *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP); + if (*ibits != 0) + rc = mdt_object_lock(info, obj, lhc, *ibits); + } + } else if (*ibits != 0) { + rc = mdt_object_lock(info, obj, lhc, *ibits); + } + + CDEBUG(D_INODE, "%s: Requested bits lock:"DFID ", ibits = %#llx" + ", open_flags = %#llo, try_layout = %d : rc = %d\n", + mdt_obd_name(info->mti_mdt), 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 = %#llo\n", + PFID(mdt_object_fid(obj)), open_flags); + + /* We cannot enqueue another lock for the same resource we + * already have a lock for, due to mechanics of waiting list + * iterating in ldlm, see LU-3601. + * As such we'll drop the open lock we just got above here, + * it's ok not to have this open lock as it's main purpose is to + * flush unused cached client open handles. */ + if (lustre_handle_is_used(&lhc->mlh_reg_lh)) + mdt_object_unlock(info, obj, lhc, 1); + + 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); + + OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2); + } + + /* Check if there is any other open handles after acquiring + * open lock. At this point, caching open handles have been revoked + * by open lock. + * XXX: Now only exclusive open is supported. Need to check the + * type of open for generic lease support. */ + if (rc == 0 && acq_lease) { + struct ptlrpc_request *req = mdt_info_req(info); + struct mdt_export_data *med = &req->rq_export->exp_mdt_data; + struct mdt_file_data *mfd; + bool is_replay_or_resent; + int open_count = 0; + + /* For lease: application can open a file and then apply lease, + * @handle contains original open handle in that case. + * In recovery, open REQ will be replayed and the lease REQ may + * be resent that means the open handle is already stale, so we + * need to fix it up here by finding new handle. */ + is_replay_or_resent = req_is_replay(req) || + lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT; + + /* if the request is _not_ a replay request, rr_handle + * may be used to hold an openhandle which is issuing the + * lease request, so that this openhandle doesn't count. */ + mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle, + is_replay_or_resent); + if (mfd != NULL) + ++open_count; + + CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n", + PFID(mdt_object_fid(obj)), + atomic_read(&obj->mot_open_count), open_count); + + if (atomic_read(&obj->mot_open_count) > open_count) + GOTO(out, rc = -EBUSY); + } + GOTO(out, rc); + +out: + 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_LOCAL]; + ENTRY; + + if (req_is_replay(mdt_info_req(info))) + RETURN_EXIT; + + /* Release local lock - the lock put in MDT_LH_LOCAL will never + * return to client side. */ + if (lustre_handle_is_used(&ll->mlh_reg_lh)) + mdt_object_unlock(info, obj, ll, 1); + + ll = &info->mti_lh[MDT_LH_LAYOUT]; + /* Release local layout lock, layout was created */ + if (lustre_handle_is_used(&ll->mlh_reg_lh)) { + LASSERT(!(ibits & MDS_INODELOCK_LAYOUT)); + mdt_object_unlock(info, obj, ll, 1); + } + + if (open_flags & MDS_OPEN_LEASE) + up_write(&obj->mot_open_sem); + else + up_read(&obj->mot_open_sem); + + /* Cross-ref case, the lock should be returned to the client */ + if (ibits == 0 || rc == -MDT_EREMOTE_OPEN) + RETURN_EXIT; + + 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 || !lustre_handle_is_used(&lhc->mlh_reg_lh)) { + 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); + if (lustre_handle_is_used(&lhc->mlh_reg_lh)) + mdt_object_unlock(info, obj, lhc, 1); + } + RETURN_EXIT; +} + +/** + * Check release is permitted for the current HSM flags. + */ +static bool mdt_hsm_release_allow(const struct md_attr *ma) +{ + if (!(ma->ma_valid & MA_HSM)) + return false; + + if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST)) + return false; + + if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED)) + return false; + + return true; +} + +static 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; - __u32 flags = info->mti_spec.sp_cr_flags; + __u64 flags = info->mti_spec.sp_cr_flags; struct mdt_reint_record *rr = &info->mti_rr; struct md_attr *ma = &info->mti_attr; struct mdt_object *parent= NULL; struct mdt_object *o; int rc; - ldlm_mode_t lm; + bool object_locked = false; + __u64 ibits = 0; ENTRY; if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) { @@ -1137,41 +1039,51 @@ int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep, ma->ma_need |= MA_PFID; } - o = mdt_object_find(env, mdt, rr->rr_fid2); - if (IS_ERR(o)) - RETURN(rc = PTR_ERR(o)); + o = mdt_object_find(env, mdt, rr->rr_fid2); + if (IS_ERR(o)) + GOTO(out_parent_put, rc = PTR_ERR(o)); + + if (mdt_object_remote(o)) { + CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n", + mdt_obd_name(info->mti_mdt), + 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); + } - 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 (rc) - GOTO(out, rc); + mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD)); + mdt_prep_ma_buf_from_rep(info, o, ma); + if (flags & MDS_OPEN_RELEASE) + ma->ma_need |= MA_HSM; rc = mdt_attr_get_complex(info, o, ma); - if (rc) - GOTO(out, rc); + if (rc) + GOTO(out, rc); + + /* We should not change file's existing LOV EA */ + if (S_ISREG(lu_object_attr(&o->mot_obj)) && + flags & MDS_OPEN_HAS_EA && ma->ma_valid & MA_LOV) + GOTO(out, rc = -EEXIST); + + /* If a release request, check file flags are fine and ask for an + * exclusive open access. */ + if (flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma)) + GOTO(out, rc = -EPERM); + + rc = mdt_check_resent_lock(info, o, lhc); + if (rc < 0) { + GOTO(out, rc); + } else if (rc > 0) { + rc = mdt_object_open_lock(info, o, lhc, &ibits); + object_locked = true; + if (rc) + GOTO(out_unlock, rc); + } if (ma->ma_valid & MA_PFID) { parent = mdt_object_find(env, mdt, &ma->ma_pfid); @@ -1184,31 +1096,32 @@ int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep, } } - if (flags & MDS_OPEN_LOCK) - mdt_set_disposition(info, rep, DISP_OPEN_LOCK); rc = mdt_finish_open(info, parent, o, flags, 0, rep); + if (!rc) { + mdt_set_disposition(info, rep, DISP_LOOKUP_POS); + if (flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, rep, DISP_OPEN_LOCK); + if (flags & MDS_OPEN_LEASE) + mdt_set_disposition(info, rep, DISP_OPEN_LEASE); + } + GOTO(out_unlock, rc); - if (!(flags & MDS_OPEN_LOCK) || rc) - mdt_object_unlock(info, o, lhc, 1); - - GOTO(out, rc); +out_unlock: + if (object_locked) + mdt_object_open_unlock(info, o, lhc, ibits, rc); out: - mdt_object_put(env, o); - if (parent != NULL) - mdt_object_put(env, parent); - return rc; -} - -int mdt_pin(struct mdt_thread_info* info) -{ - ENTRY; - RETURN(err_serious(-EOPNOTSUPP)); + mdt_object_put(env, o); +out_parent_put: + if (parent != NULL) + mdt_object_put(env, parent); + return rc; } /* 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; @@ -1219,40 +1132,98 @@ 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 = mdt_attr_get_complex(info, 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, + "Object isn't on this server! FLD error?"); 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_prep_ma_buf_from_rep(info, o, ma); + rc = mdt_attr_get_complex(info, o, ma); + if (rc != 0) + GOTO(out, rc); + + 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); } +/* + * find root object and take its xattr lock if it's on remote MDT, later create + * may use fs default striping (which is stored in root xattr). + */ +static int mdt_lock_root_xattr(struct mdt_thread_info *info, + struct mdt_device *mdt) +{ + struct mdt_object *md_root = mdt->mdt_md_root; + struct lustre_handle lhroot; + int rc; + + if (md_root == NULL) { + lu_root_fid(&info->mti_tmp_fid1); + md_root = mdt_object_find(info->mti_env, mdt, + &info->mti_tmp_fid1); + if (IS_ERR(md_root)) + return PTR_ERR(md_root); + + spin_lock(&mdt->mdt_lock); + if (mdt->mdt_md_root != NULL) { + spin_unlock(&mdt->mdt_lock); + + LASSERTF(mdt->mdt_md_root == md_root, + "Different root object (" + DFID") instances, %p, %p\n", + PFID(&info->mti_tmp_fid1), + mdt->mdt_md_root, md_root); + LASSERT(atomic_read( + &md_root->mot_obj.lo_header->loh_ref) > 1); + + mdt_object_put(info->mti_env, md_root); + } else { + mdt->mdt_md_root = md_root; + spin_unlock(&mdt->mdt_lock); + } + } + + if (md_root->mot_cache_attr || !mdt_object_remote(md_root)) + return 0; + + rc = mdt_remote_object_lock(info, md_root, mdt_object_fid(md_root), + &lhroot, LCK_PR, MDS_INODELOCK_XATTR, + false, true); + if (rc < 0) + return rc; + + md_root->mot_cache_attr = 1; + + /* don't cancel this lock, so that we know the cached xattr is valid. */ + ldlm_lock_decref(&lhroot, LCK_PR); + + return 0; +} + int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_device *mdt = info->mti_mdt; @@ -1265,10 +1236,11 @@ 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 = 0; struct mdt_reint_record *rr = &info->mti_rr; - struct lu_name *lname; int result, rc; int created = 0; + int object_locked = 0; __u32 msg_flags; ENTRY; @@ -1278,13 +1250,7 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) 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); - ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD, - RCL_SERVER); ma->ma_need = MA_INODE; - if (ma->ma_lmm_size > 0) - ma->ma_need |= MA_LOV; - ma->ma_valid = 0; LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN); @@ -1300,13 +1266,25 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) info->mti_spec.u.sp_ea.eadata == NULL) GOTO(out, result = err_serious(-EINVAL)); - CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") " - "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n", - 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) || + if (create_flags & FMODE_WRITE && + exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY) + GOTO(out, result = -EROFS); + + CDEBUG(D_INODE, "I am going to open "DFID"/("DNAME"->"DFID") " + "cr_flag=%#llo mode=0%06o msg_flag=0x%x\n", + PFID(rr->rr_fid1), PNAME(&rr->rr_name), + PFID(rr->rr_fid2), create_flags, + ma->ma_attr.la_mode, msg_flags); + + 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); @@ -1325,39 +1303,46 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) GOTO(out, result = -EFAULT); } CDEBUG(D_INFO, "No object(1), continue as regular open.\n"); - } else if ((rr->rr_namelen == 0 && !info->mti_cross_ref && - create_flags & MDS_OPEN_LOCK) || - (create_flags & MDS_OPEN_BY_FID)) { + } else if (create_flags & (MDS_OPEN_BY_FID | MDS_OPEN_LOCK)) { + /* + * MDS_OPEN_LOCK is checked for backward compatibility with 2.1 + * client. + */ result = mdt_open_by_fid_lock(info, ldlm_rep, lhc); - if (result != -ENOENT && !(create_flags & MDS_OPEN_CREAT)) - 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 (result < 0) + CDEBUG(D_INFO, "no object for "DFID": %d\n", + PFID(rr->rr_fid2), result); + GOTO(out, result); } - if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) - GOTO(out, result = err_serious(-ENOMEM)); + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) + GOTO(out, result = err_serious(-ENOMEM)); - mdt_set_disposition(info, ldlm_rep, - (DISP_IT_EXECD | DISP_LOOKUP_EXECD)); + 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); - } + if (!lu_name_is_valid(&rr->rr_name)) + GOTO(out, result = -EPROTO); + + result = mdt_lock_root_xattr(info, mdt); + if (result < 0) + GOTO(out, result); + +again: + lh = &info->mti_lh[MDT_LH_PARENT]; + mdt_lock_pdo_init(lh, + (create_flags & MDS_OPEN_CREAT) ? LCK_PW : LCK_PR, + &rr->rr_name); - 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); + parent = mdt_object_find(info->mti_env, mdt, rr->rr_fid1); + if (IS_ERR(parent)) + GOTO(out, result = PTR_ERR(parent)); - parent = mdt_object_find_lock(info, rr->rr_fid1, lh, - MDS_INODELOCK_UPDATE); - if (IS_ERR(parent)) - GOTO(out, result = PTR_ERR(parent)); + result = mdt_object_lock(info, parent, lh, MDS_INODELOCK_UPDATE); + if (result != 0) { + mdt_object_put(info->mti_env, parent); + GOTO(out, result); + } /* get and check version of parent */ result = mdt_version_get_check(info, parent, 0); @@ -1366,28 +1351,60 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) fid_zero(child_fid); - lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); - result = mdo_lookup(info->mti_env, mdt_object_child(parent), - lname, child_fid, &info->mti_spec); - LASSERTF(ergo(result == 0, fid_is_sane(child_fid)), - "looking for "DFID"/%s, result fid="DFID"\n", - PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid)); + result = mdo_lookup(info->mti_env, mdt_object_child(parent), + &rr->rr_name, child_fid, &info->mti_spec); + + LASSERTF(ergo(result == 0, fid_is_sane(child_fid)), + "looking for "DFID"/"DNAME", found FID = "DFID"\n", + PFID(mdt_object_fid(parent)), PNAME(&rr->rr_name), + PFID(child_fid)); if (result != 0 && result != -ENOENT && result != -ESTALE) GOTO(out_parent, result); - if (result == -ENOENT || result == -ESTALE) { - mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG); - if (result == -ESTALE) { - /* - * -ESTALE means the parent is a dead(unlinked) dir, so - * it should return -ENOENT to in accordance with the - * original mds implementaion. - */ - GOTO(out_parent, result = -ENOENT); - } + if (result == -ENOENT || result == -ESTALE) { + /* If the object is dead, let's check if the object + * is being migrated to a new object */ + if (result == -ESTALE) { + struct lu_buf lmv_buf; + + lmv_buf.lb_buf = info->mti_xattr_buf; + lmv_buf.lb_len = sizeof(info->mti_xattr_buf); + rc = mo_xattr_get(info->mti_env, + mdt_object_child(parent), + &lmv_buf, XATTR_NAME_LMV); + if (rc > 0) { + struct lmv_mds_md_v1 *lmv; + + lmv = lmv_buf.lb_buf; + if (le32_to_cpu(lmv->lmv_hash_type) & + LMV_HASH_FLAG_MIGRATION) { + /* Get the new parent FID and retry */ + mdt_object_unlock_put(info, parent, + lh, 1); + mdt_lock_handle_init(lh); + fid_le_to_cpu( + (struct lu_fid *)rr->rr_fid1, + &lmv->lmv_stripe_fids[1]); + goto again; + } + } + } + + mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG); + if (result == -ESTALE) { + /* + * -ESTALE means the parent is a dead(unlinked) dir, so + * it should return -ENOENT to in accordance with the + * original mds implementaion. + */ + GOTO(out_parent, result = -ENOENT); + } + if (!(create_flags & MDS_OPEN_CREAT)) GOTO(out_parent, result); + if (exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY) + GOTO(out_parent, result = -EROFS); *child_fid = *info->mti_rr.rr_fid2; LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n", PFID(child_fid)); @@ -1411,17 +1428,17 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) if (rc) GOTO(out_child, result = rc); - 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_md_operative(rr->rr_fid1)) + GOTO(out_child, result = -EPERM); - /* save versions in reply */ - mdt_version_get_save(info, parent, 0); - mdt_version_get_save(info, child, 1); + /* save versions in reply */ + mdt_version_get_save(info, parent, 0); + mdt_version_get_save(info, child, 1); - /* version of child will be changed */ - info->mti_mos = child; + /* version of child will be changed */ + tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child)); /* Not found and with MDS_OPEN_CREAT: let's create it. */ mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE); @@ -1437,17 +1454,17 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) info->mti_spec.sp_cr_lookup = 0; info->mti_spec.sp_feat = &dt_directory_features; - result = mdo_create(info->mti_env, - mdt_object_child(parent), - lname, - mdt_object_child(child), - &info->mti_spec, - &info->mti_attr); + result = mdo_create(info->mti_env, + mdt_object_child(parent), + &rr->rr_name, + mdt_object_child(child), + &info->mti_spec, + &info->mti_attr); if (result == -ERESTART) { mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE); GOTO(out_child, result); } else { - + mdt_prep_ma_buf_from_rep(info, child, ma); /* XXX: we should call this once, see few lines below */ if (result == 0) result = mdt_attr_get_complex(info, child, ma); @@ -1455,14 +1472,13 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) if (result != 0) GOTO(out_child, result); } - created = 1; + created = 1; + mdt_counter_incr(req, LPROC_MDT_MKNOD); } else { - /* We have to get attr & lov ea for this object */ - result = mdt_attr_get_complex(info, 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 @@ -1470,99 +1486,503 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) */ LASSERT(lhc != NULL); - if (lustre_handle_is_used(&lhc->mlh_reg_lh)) { - struct ldlm_lock *lock; - - LASSERT(msg_flags & MSG_RESENT); - - lock = ldlm_handle2lock(&lhc->mlh_reg_lh); - if (!lock) { - CERROR("Invalid lock handle "LPX64"\n", - lhc->mlh_reg_lh.cookie); - LBUG(); - } - LASSERT(fid_res_name_eq(mdt_object_fid(child), - &lock->l_resource->lr_name)); - LDLM_LOCK_PUT(lock); - rc = 0; - } else { - mdt_lock_handle_init(lhc); - mdt_lock_reg_init(lhc, LCK_PR); - - rc = mdt_object_lock(info, child, lhc, - MDS_INODELOCK_LOOKUP, - MDT_CROSS_LOCK); - } - repbody->fid1 = *mdt_object_fid(child); - repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); + rc = mdt_check_resent_lock(info, child, lhc); + if (rc < 0) { + GOTO(out_child, result = rc); + } else if (rc > 0) { + mdt_lock_handle_init(lhc); + mdt_lock_reg_init(lhc, LCK_PR); + + rc = mdt_object_lock(info, child, lhc, + MDS_INODELOCK_LOOKUP); + } + repbody->mbo_fid1 = *mdt_object_fid(child); + repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS); if (rc != 0) result = rc; + else + result = -MDT_EREMOTE_OPEN; GOTO(out_child, result); - } + } else if (mdt_object_exists(child)) { + /* We have to get attr & LOV EA & HSM for this + * object. */ + mdt_prep_ma_buf_from_rep(info, child, ma); + ma->ma_need |= MA_HSM; + result = mdt_attr_get_complex(info, child, ma); + if (result != 0) + GOTO(out_child, result); + } else { + /* Object does not exist. Likely FS corruption. */ + CERROR("%s: name '"DNAME"' present, but FID " + DFID" is invalid\n", mdt_obd_name(info->mti_mdt), + PNAME(&rr->rr_name), PFID(child_fid)); + GOTO(out_child, result = -EIO); + } } - 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); - } - } + rc = mdt_check_resent_lock(info, child, lhc); + if (rc < 0) { + GOTO(out_child, result = rc); + } else if (rc == 0) { + /* the open lock might already be gotten in + * ldlm_handle_enqueue() */ + LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT); + if (create_flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK); + } else { + /* get openlock if this isn't replay and client requested it */ + if (!req_is_replay(req)) { + rc = mdt_object_open_lock(info, child, lhc, &ibits); + object_locked = 1; + if (rc != 0) + GOTO(out_child_unlock, 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 && create_flags & MDS_OPEN_VOLATILE) { + CERROR("%s: cannot open volatile file "DFID", orphan " + "file will be left in PENDING directory until " + "next reboot, rc = %d\n", mdt_obd_name(mdt), + PFID(mdt_object_fid(child)), rc); + GOTO(out_child_unlock, result); + } - /* 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; - 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"); - } - } - EXIT; + if (created) { + ma->ma_need = 0; + ma->ma_valid = 0; + rc = mdo_unlink(info->mti_env, + mdt_object_child(parent), + mdt_object_child(child), + &rr->rr_name, + &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_unlock: + if (object_locked) + mdt_object_open_unlock(info, child, lhc, ibits, result); out_child: - mdt_object_put(info->mti_env, child); + mdt_object_put(info->mti_env, child); out_parent: - mdt_object_unlock_put(info, parent, lh, result || !created); + mdt_object_unlock_put(info, parent, lh, result || !created); +out: + if (result) + lustre_msg_set_transno(req->rq_repmsg, 0); + return result; +} + +/** + * Create an orphan object use local root. + */ +static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info, + struct mdt_device *mdt, + const struct lu_fid *fid, + struct md_attr *attr, fmode_t fmode) +{ + const struct lu_env *env = info->mti_env; + struct md_op_spec *spec = &info->mti_spec; + struct lu_fid *local_root_fid = &info->mti_tmp_fid1; + struct mdt_object *obj = NULL; + struct mdt_object *local_root; + static const struct lu_name lname = { + .ln_name = "i_am_nobody", + .ln_namelen = sizeof("i_am_nobody") - 1, + }; + struct lu_ucred *uc; + cfs_cap_t uc_cap_save; + int rc; + ENTRY; + + rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid); + if (rc != 0) + RETURN(ERR_PTR(rc)); + + local_root = mdt_object_find(env, mdt, local_root_fid); + if (IS_ERR(local_root)) + RETURN(local_root); + + obj = mdt_object_new(env, mdt, fid); + if (IS_ERR(obj)) + GOTO(out, rc = PTR_ERR(obj)); + + spec->sp_cr_lookup = 0; + spec->sp_feat = &dt_directory_features; + spec->sp_cr_mode = MDL_MINMODE; /* no lock */ + spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode; + if (attr->ma_valid & MA_LOV) { + spec->u.sp_ea.eadata = attr->ma_lmm; + spec->u.sp_ea.eadatalen = attr->ma_lmm_size; + spec->sp_cr_flags |= MDS_OPEN_HAS_EA; + } else { + spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE; + } + + uc = lu_ucred(env); + uc_cap_save = uc->uc_cap; + uc->uc_cap |= 1 << CFS_CAP_DAC_OVERRIDE; + rc = mdo_create(env, mdt_object_child(local_root), &lname, + mdt_object_child(obj), spec, attr); + uc->uc_cap = uc_cap_save; + if (rc < 0) { + CERROR("%s: cannot create volatile file "DFID": rc = %d\n", + mdt_obd_name(mdt), PFID(fid), rc); + GOTO(out, rc); + } + + rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED); + if (rc < 0) + CERROR("%s: cannot open volatile file "DFID", orphan " + "file will be left in PENDING directory until " + "next reboot, rc = %d\n", mdt_obd_name(mdt), + PFID(fid), rc); + GOTO(out, rc); + out: - if (result && result != -EREMOTE) - lustre_msg_set_transno(req->rq_repmsg, 0); - return result; + if (rc < 0) { + if (!IS_ERR(obj)) + mdt_object_put(env, obj); + obj = ERR_PTR(rc); + } + mdt_object_put(env, local_root); + return obj; +} + +static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o, + struct md_attr *ma) +{ + struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT]; + struct close_data *data; + struct ldlm_lock *lease; + struct mdt_object *orphan; + struct md_attr *orp_ma; + struct lu_buf *buf; + bool lease_broken; + int rc; + int rc2; + ENTRY; + + if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY) + RETURN(-EROFS); + + data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA); + if (data == NULL) + RETURN(-EPROTO); + + lease = ldlm_handle2lock(&data->cd_handle); + if (lease == NULL) + RETURN(-ESTALE); + + /* try to hold open_sem so that nobody else can open the file */ + if (!down_write_trylock(&o->mot_open_sem)) { + ldlm_lock_cancel(lease); + GOTO(out_reprocess, rc = -EBUSY); + } + + /* Check if the lease open lease has already canceled */ + lock_res_and_lock(lease); + lease_broken = ldlm_is_cancel(lease); + unlock_res_and_lock(lease); + + LDLM_DEBUG(lease, DFID " lease broken? %d", + PFID(mdt_object_fid(o)), lease_broken); + + /* Cancel server side lease. Client side counterpart should + * have been cancelled. It's okay to cancel it now as we've + * held mot_open_sem. */ + ldlm_lock_cancel(lease); + + if (lease_broken) /* don't perform release task */ + GOTO(out_unlock, rc = -ESTALE); + + if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid)) + GOTO(out_unlock, rc = -EINVAL); + + /* ma_need was set before but it seems fine to change it in order to + * avoid modifying the one from RPC */ + ma->ma_need = MA_HSM; + rc = mdt_attr_get_complex(info, o, ma); + if (rc != 0) + GOTO(out_unlock, rc); + + if (!mdt_hsm_release_allow(ma)) + GOTO(out_unlock, rc = -EPERM); + + /* already released? */ + if (ma->ma_hsm.mh_flags & HS_RELEASED) + GOTO(out_unlock, rc = 0); + + /* Compare on-disk and packed data_version */ + if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) { + CDEBUG(D_HSM, DFID" data_version mismatches: packed=%llu" + " and on-disk=%llu\n", PFID(mdt_object_fid(o)), + data->cd_data_version, ma->ma_hsm.mh_arch_ver); + GOTO(out_unlock, rc = -EPERM); + } + + ma->ma_valid = MA_INODE; + ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE; + rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma); + if (rc < 0) + GOTO(out_unlock, rc); + + ma->ma_need = MA_INODE | MA_LOV; + rc = mdt_attr_get_complex(info, o, ma); + if (rc < 0) + GOTO(out_unlock, rc); + + if (!(ma->ma_valid & MA_LOV)) { + /* Even empty file are released */ + memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm)); + ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF); + ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0); + ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE); + ma->ma_lmm_size = sizeof(*ma->ma_lmm); + } else { + /* Magic must be LOV_MAGIC_Vx_DEF otherwise LOD will interpret + * ma_lmm as lov_user_md, then it will be confused by union of + * layout_gen and stripe_offset. */ + if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V1) + ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF); + else if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V3) + ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V3_DEF); + else + GOTO(out_unlock, rc = -EINVAL); + } + + /* Set file as released */ + ma->ma_lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED); + + orp_ma = &info->mti_u.hsm.attr; + orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR; + orp_ma->ma_attr.la_uid = ma->ma_attr.la_uid; + orp_ma->ma_attr.la_gid = ma->ma_attr.la_gid; + orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID; + orp_ma->ma_lmm = ma->ma_lmm; + orp_ma->ma_lmm_size = ma->ma_lmm_size; + orp_ma->ma_valid = MA_INODE | MA_LOV; + orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma, + FMODE_WRITE); + if (IS_ERR(orphan)) { + CERROR("%s: cannot open orphan file "DFID": rc = %ld\n", + mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), + PTR_ERR(orphan)); + GOTO(out_unlock, rc = PTR_ERR(orphan)); + } + + /* Set up HSM attribute for orphan object */ + CLASSERT(sizeof(struct hsm_attrs) <= sizeof(info->mti_xattr_buf)); + buf = &info->mti_buf; + buf->lb_buf = info->mti_xattr_buf; + buf->lb_len = sizeof(struct hsm_attrs); + ma->ma_hsm.mh_flags |= HS_RELEASED; + lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm); + ma->ma_hsm.mh_flags &= ~HS_RELEASED; + + mdt_lock_reg_init(lh, LCK_EX); + rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT | + MDS_INODELOCK_XATTR); + if (rc != 0) + GOTO(out_close, rc); + + rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf, + XATTR_NAME_HSM, 0); + + if (rc == 0) + /* Swap layout with orphan object */ + rc = mo_swap_layouts(info->mti_env, mdt_object_child(o), + mdt_object_child(orphan), + SWAP_LAYOUTS_MDS_HSM); + + /* Release exclusive LL */ + mdt_object_unlock(info, o, lh, 1); + + EXIT; + +out_close: + /* Close orphan object anyway */ + rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma, + FMODE_WRITE); + if (rc2 < 0) + CERROR("%s: error closing volatile file "DFID": rc = %d\n", + mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2); + LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj, + "object closed"); + mdt_object_put(info->mti_env, orphan); + +out_unlock: + up_write(&o->mot_open_sem); + + /* already released */ + if (rc == 0) { + struct mdt_body *repbody; + + repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); + LASSERT(repbody != NULL); + repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED; + } + +out_reprocess: + ldlm_reprocess_all(lease->l_resource); + LDLM_LOCK_PUT(lease); + + ma->ma_valid = 0; + ma->ma_need = 0; + + return rc; } -#define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \ - MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED) +int mdt_close_swap_layouts(struct mdt_thread_info *info, + struct mdt_object *o, struct md_attr *ma) +{ + struct mdt_lock_handle *lh1 = &info->mti_lh[MDT_LH_NEW]; + struct mdt_lock_handle *lh2 = &info->mti_lh[MDT_LH_OLD]; + struct close_data *data; + struct ldlm_lock *lease; + struct mdt_object *o1 = o, *o2; + bool lease_broken; + bool swap_objects; + int rc; + ENTRY; + + if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY) + RETURN(-EROFS); + + if (!S_ISREG(lu_object_attr(&o1->mot_obj))) + RETURN(-EINVAL); + + data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA); + if (data == NULL) + RETURN(-EPROTO); + + if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid)) + RETURN(-EINVAL); + + rc = lu_fid_cmp(&data->cd_fid, mdt_object_fid(o)); + if (unlikely(rc == 0)) + RETURN(-EINVAL); + + /* Exchange o1 and o2, to enforce locking order */ + swap_objects = (rc < 0); + + lease = ldlm_handle2lock(&data->cd_handle); + if (lease == NULL) + RETURN(-ESTALE); + + o2 = mdt_object_find(info->mti_env, info->mti_mdt, &data->cd_fid); + if (IS_ERR(o2)) + GOTO(out_lease, rc = PTR_ERR(o2)); + + if (!S_ISREG(lu_object_attr(&o2->mot_obj))) { + swap_objects = false; /* not swapped yet */ + GOTO(out_obj, rc = -EINVAL); + } + + if (swap_objects) + swap(o1, o2); + + rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL, + MAY_WRITE); + if (rc < 0) + GOTO(out_obj, rc); + + rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL, + MAY_WRITE); + if (rc < 0) + GOTO(out_obj, rc); + + /* try to hold open_sem so that nobody else can open the file */ + if (!down_write_trylock(&o->mot_open_sem)) { + ldlm_lock_cancel(lease); + GOTO(out_obj, rc = -EBUSY); + } + + /* Check if the lease open lease has already canceled */ + lock_res_and_lock(lease); + lease_broken = ldlm_is_cancel(lease); + unlock_res_and_lock(lease); + + LDLM_DEBUG(lease, DFID " lease broken? %d", + PFID(mdt_object_fid(o)), lease_broken); + + /* Cancel server side lease. Client side counterpart should + * have been cancelled. It's okay to cancel it now as we've + * held mot_open_sem. */ + ldlm_lock_cancel(lease); + + if (lease_broken) + GOTO(out_unlock_sem, rc = -ESTALE); + + mdt_lock_reg_init(lh1, LCK_EX); + rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT | + MDS_INODELOCK_XATTR); + if (rc < 0) + GOTO(out_unlock_sem, rc); + + mdt_lock_reg_init(lh2, LCK_EX); + rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT | + MDS_INODELOCK_XATTR); + if (rc < 0) + GOTO(out_unlock1, rc); + + /* Swap layout with orphan object */ + rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1), + mdt_object_child(o2), 0); + if (rc < 0) + GOTO(out_unlock2, rc); + + EXIT; + +out_unlock2: + /* Release exclusive LL */ + mdt_object_unlock(info, o2, lh2, 1); +out_unlock1: + mdt_object_unlock(info, o1, lh1, 1); + +out_unlock_sem: + up_write(&o->mot_open_sem); + + /* already swapped */ + if (rc == 0) { + struct mdt_body *repbody; + + repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); + LASSERT(repbody != NULL); + repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED; + } + +out_obj: + mdt_object_put(info->mti_env, swap_objects ? o1 : o2); + + ldlm_reprocess_all(lease->l_resource); + +out_lease: + LDLM_LOCK_PUT(lease); + + if (ma != NULL) { + ma->ma_valid = 0; + ma->ma_need = 0; + } + + return rc; +} + +#define MFD_CLOSED(mode) ((mode) == MDS_FMODE_CLOSED) static int mdt_mfd_closed(struct mdt_file_data *mfd) { return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode)); @@ -1573,23 +1993,37 @@ int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd) struct mdt_object *o = mfd->mfd_object; struct md_object *next = mdt_object_child(o); struct md_attr *ma = &info->mti_attr; - int ret = MDT_IOEPOCH_CLOSED; int rc = 0; - int mode; + __u64 mode; ENTRY; mode = mfd->mfd_mode; - if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) { - mdt_write_put(o); - ret = mdt_ioepoch_close(info, o); - } else if (mode & MDS_FMODE_EXEC) { - mdt_write_allow(o); - } else if (mode & MDS_FMODE_EPOCH) { - ret = mdt_ioepoch_close(info, o); - } else if (mode & MDS_FMODE_SOM) { - ret = mdt_som_au_close(info, o); - } + if (ma->ma_attr_flags & MDS_HSM_RELEASE) { + rc = mdt_hsm_release(info, o, ma); + if (rc < 0) { + CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n", + mdt_obd_name(info->mti_mdt), + PFID(mdt_object_fid(o)), rc); + /* continue to close even error occurred. */ + } + } + + if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP) { + rc = mdt_close_swap_layouts(info, o, ma); + if (rc < 0) { + CDEBUG(D_INODE, + "%s: cannot swap layout of "DFID": rc=%d\n", + mdt_obd_name(info->mti_mdt), + PFID(mdt_object_fid(o)), rc); + /* continue to close even if error occurred. */ + } + } + + if (mode & FMODE_WRITE) + mdt_write_put(o); + else if (mode & MDS_FMODE_EXEC) + mdt_write_allow(o); /* Update atime on close only. */ if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE) @@ -1600,72 +2034,96 @@ 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 (ma->ma_attr_flags & MDS_DATA_MODIFIED) + rc = mdt_add_dirty_flag(info, o, ma); + ma->ma_need |= MA_INODE; ma->ma_valid &= ~MA_INODE; if (!MFD_CLOSED(mode)) rc = mo_close(info->mti_env, next, ma, mode); - if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) { - struct mdt_export_data *med; + /* adjust open and lease count */ + if (mode & MDS_OPEN_LEASE) { + LASSERT(atomic_read(&o->mot_lease_count) > 0); + atomic_dec(&o->mot_lease_count); + } - /* The IOepoch is still opened or SOM update is needed. - * Put mfd back into the list. */ - LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM); - mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ? - MDS_FMODE_EPOCH : MDS_FMODE_SOM); + LASSERT(atomic_read(&o->mot_open_count) > 0); + atomic_dec(&o->mot_open_count); + mdt_mfd_free(mfd); + mdt_object_put(info->mti_env, o); - 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); + RETURN(rc); +} - if (ret == MDT_IOEPOCH_OPENED) { - ret = 0; - } else { - ret = -EAGAIN; - CDEBUG(D_INODE, "Size-on-MDS attribute update is " - "needed on "DFID"\n", PFID(mdt_object_fid(o))); - } - } else { - mdt_mfd_free(mfd); - mdt_object_put(info->mti_env, o); - } +int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req, + struct mdt_body *repbody) +{ + struct mdt_export_data *med; + struct mdt_file_data *mfd; + struct mdt_object *o; + struct md_attr *ma = &info->mti_attr; + int ret = 0; + int rc = 0; + ENTRY; + + med = &req->rq_export->exp_mdt_data; + spin_lock(&med->med_open_lock); + mfd = mdt_handle2mfd(med, &info->mti_close_handle, req_is_replay(req)); + if (mdt_mfd_closed(mfd)) { + spin_unlock(&med->med_open_lock); + CDEBUG(D_INODE, "no handle for file close: fid = "DFID + ": cookie = %#llx\n", PFID(info->mti_rr.rr_fid1), + info->mti_close_handle.cookie); + /** not serious error since bug 3633 */ + rc = -ESTALE; + } else { + class_handle_unhash(&mfd->mfd_handle); + list_del_init(&mfd->mfd_list); + spin_unlock(&med->med_open_lock); + + /* Do not lose object before last unlink. */ + o = mfd->mfd_object; + mdt_object_get(info->mti_env, o); + ret = mdt_mfd_close(info, mfd); + if (repbody != NULL) + rc = mdt_handle_last_unlink(info, o, ma); + mdt_object_put(info->mti_env, o); + } - RETURN(rc ? rc : ret); + RETURN(rc ? rc : ret); } -int mdt_close(struct mdt_thread_info *info) +int mdt_close(struct tgt_session_info *tsi) { - struct mdt_export_data *med; - struct mdt_file_data *mfd; - struct mdt_object *o; + struct mdt_thread_info *info = tsi2mdt_info(tsi); + struct ptlrpc_request *req = tgt_ses_req(tsi); struct md_attr *ma = &info->mti_attr; struct mdt_body *repbody = NULL; - struct ptlrpc_request *req = mdt_info_req(info); int rc, ret = 0; ENTRY; 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) - RETURN(err_serious(rc)); - - LASSERT(info->mti_ioepoch); + /* Close may come with the Size-on-MDS update. Unpack it. */ + rc = mdt_close_unpack(info); + if (rc) + GOTO(out, rc = err_serious(rc)); + /* These fields are no longer used and are left for compatibility. + * size is always zero */ req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER, - info->mti_mdt->mdt_max_mdsize); + 0); req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER, - info->mti_mdt->mdt_max_cookiesize); + 0); rc = req_capsule_server_pack(info->mti_pill); if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) { mdt_client_compatibility(info); if (rc == 0) mdt_fix_reply(info); - RETURN(lustre_msg_get_status(req->rq_repmsg)); + mdt_exit_ucred(info); + GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg)); } /* Continue to close handle even if we can not pack reply */ @@ -1677,128 +2135,30 @@ int mdt_close(struct mdt_thread_info *info) ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER); - ma->ma_cookie = req_capsule_server_get(info->mti_pill, - &RMF_LOGCOOKIES); - ma->ma_cookie_size = req_capsule_get_size(info->mti_pill, - &RMF_LOGCOOKIES, - RCL_SERVER); - ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE; - repbody->eadatasize = 0; - repbody->aclsize = 0; + ma->ma_need = MA_INODE | MA_LOV; + repbody->mbo_eadatasize = 0; + repbody->mbo_aclsize = 0; } else { rc = err_serious(rc); } - 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); - - /* Do not lose object before last unlink. */ - o = mfd->mfd_object; - mdt_object_get(info->mti_env, o); - ret = mdt_mfd_close(info, mfd); - if (repbody != NULL) - rc = mdt_handle_last_unlink(info, o, ma); - mdt_empty_transno(info, rc); - mdt_object_put(info->mti_env, o); - } + rc = mdt_close_internal(info, req, repbody); + if (rc != -ESTALE) + mdt_empty_transno(info, rc); + if (repbody != NULL) { mdt_client_compatibility(info); rc = mdt_fix_reply(info); } - if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) - RETURN(err_serious(-ENOMEM)); - - if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP, - OBD_FAIL_MDS_CLOSE_NET_REP)) - info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP; - RETURN(rc ? rc : ret); -} - -/** - * DONE_WRITING rpc handler. - * - * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()), - * only those DONE_WRITING rpc will be replayed which really wrote smth on disk, - * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just - * skip attributes and reconstruct the reply here. - */ -int mdt_done_writing(struct mdt_thread_info *info) -{ - struct ptlrpc_request *req = mdt_info_req(info); - struct mdt_body *repbody = NULL; - struct mdt_export_data *med; - struct mdt_file_data *mfd; - int rc; - ENTRY; - - rc = req_capsule_server_pack(info->mti_pill); - if (rc) - RETURN(err_serious(rc)); - - repbody = req_capsule_server_get(info->mti_pill, - &RMF_MDT_BODY); - repbody->eadatasize = 0; - repbody->aclsize = 0; - - /* Done Writing may come with the Size-on-MDS update. Unpack it. */ - rc = mdt_close_unpack(info); - if (rc) - RETURN(err_serious(rc)); - - if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) - 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); - CDEBUG(D_INODE, "no handle for done write: fid = "DFID - ": cookie = "LPX64" ioepoch = "LPU64"\n", - PFID(info->mti_rr.rr_fid1), - info->mti_ioepoch->handle.cookie, - info->mti_ioepoch->ioepoch); - /* If this is a replay, reconstruct the transno. */ - if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) { - rc = info->mti_ioepoch->flags & MF_SOM_AU ? - -EAGAIN : 0; - mdt_empty_transno(info, rc); - RETURN(rc); - } - RETURN(-ESTALE); - } - - 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); - - /* Set EPOCH CLOSE flag if not set by client. */ - info->mti_ioepoch->flags |= MF_EPOCH_CLOSE; - info->mti_attr.ma_valid = 0; - - 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); + mdt_exit_ucred(info); + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) + GOTO(out, rc = err_serious(-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); + if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP, + OBD_FAIL_MDS_CLOSE_NET_REP)) + tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP; +out: + mdt_thread_info_fini(info); + RETURN(rc ? rc : ret); }