X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdt%2Fmdt_open.c;h=af84bbad0b1aa360234254782c1132ee45ec97ca;hp=d197eb647e9f946c232c590b538c8bb1111d319e;hb=398397bef91e8faac15e3a527fe2974f73c63bd6;hpb=6fc61eea18e7fb48734ffef8aee4faa283f05e36 diff --git a/lustre/mdt/mdt_open.c b/lustre/mdt/mdt_open.c index d197eb6..af84bba 100644 --- a/lustre/mdt/mdt_open.c +++ b/lustre/mdt/mdt_open.c @@ -88,7 +88,7 @@ struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *info, if (mfd == NULL && lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) { struct mdt_export_data *med = &req->rq_export->exp_mdt_data; - list_for_each_entry(mfd, &med->med_open_head, mfd_list) { + cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) { if (mfd->mfd_old_handle.cookie == handle->cookie) RETURN (mfd); } @@ -100,7 +100,7 @@ struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *info, /* free mfd */ void mdt_mfd_free(struct mdt_file_data *mfd) { - LASSERT(list_empty(&mfd->mfd_list)); + LASSERT(cfs_list_empty(&mfd->mfd_list)); OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle); } @@ -123,32 +123,35 @@ static int mdt_create_data(struct mdt_thread_info *info, RETURN(rc); } -static int mdt_epoch_opened(struct mdt_object *mo) +static int mdt_ioepoch_opened(struct mdt_object *mo) { - return mo->mot_epochcount; + return mo->mot_ioepoch_count; } -int mdt_sizeonmds_enabled(struct mdt_object *mo) +int mdt_object_is_som_enabled(struct mdt_object *mo) { return !mo->mot_ioepoch; } -/* Re-enable Size-on-MDS. */ -void mdt_sizeonmds_enable(struct mdt_thread_info *info, - struct mdt_object *mo) +/** + * Re-enable Size-on-MDS. + * Call under ->mot_ioepoch_sem. + */ +static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch) { - spin_lock(&info->mti_mdt->mdt_ioepoch_lock); - if (info->mti_epoch->ioepoch == mo->mot_ioepoch) { - LASSERT(!mdt_epoch_opened(mo)); + if (ioepoch == mo->mot_ioepoch) { + LASSERT(!mdt_ioepoch_opened(mo)); mo->mot_ioepoch = 0; mo->mot_flags = 0; - } - spin_unlock(&info->mti_mdt->mdt_ioepoch_lock); + } } -/* Open the epoch. Epoch open is allowed if @writecount is not negative. - * The epoch and writecount handling is performed under the mdt_ioepoch_lock. */ -int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o) +/** + * Open the IOEpoch. It is allowed if @writecount is not negative. + * The epoch and writecount handling is performed under the mot_ioepoch_sem. + */ +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; @@ -159,27 +162,37 @@ int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o) !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) RETURN(0); - spin_lock(&mdt->mdt_ioepoch_lock); - if (mdt_epoch_opened(o)) { + cfs_down(&o->mot_ioepoch_sem); + 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 { - if (info->mti_replayepoch > mdt->mdt_ioepoch) + /* 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 - mdt->mdt_ioepoch++; - o->mot_ioepoch = info->mti_replayepoch ? - info->mti_replayepoch : mdt->mdt_ioepoch; + o->mot_ioepoch = mdt->mdt_ioepoch; + + cfs_spin_unlock(&mdt->mdt_ioepoch_lock); + CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n", - mdt->mdt_ioepoch, PFID(mdt_object_fid(o))); + o->mot_ioepoch, PFID(mdt_object_fid(o))); + if (created) + o->mot_flags |= MOF_SOM_CREATED; cancel = 1; } - o->mot_epochcount++; - spin_unlock(&mdt->mdt_ioepoch_lock); + o->mot_ioepoch_count++; + cfs_up(&o->mot_ioepoch_sem); - /* Cancel Size-on-MDS attributes on clients if not truncate. - * In the later case, mdt_reint_setattr will do it. */ + /* 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); @@ -191,148 +204,343 @@ int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o) RETURN(rc); } -/* Update the on-disk attributes if needed and re-enable Size-on-MDS caching. */ -static int mdt_sizeonmds_update(struct mdt_thread_info *info, - struct mdt_object *o) +/** + * Update SOM on-disk attributes. + * If enabling, write update inodes and lustre-ea with the proper IOEpoch, + * mountid and attributes. If disabling, zero IOEpoch id in lustre-ea. + * Call under ->mot_ioepoch_sem. + */ +static int mdt_som_attr_set(struct mdt_thread_info *info, + struct mdt_object *obj, __u64 ioepoch, int enable) { + struct md_attr *ma = &info->mti_attr; + int rc; ENTRY; - CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n", - o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_epochcount); - - if (info->mti_attr.ma_attr.la_valid & LA_SIZE) { - /* Do Size-on-MDS attribute update. - * Size-on-MDS is re-enabled inside. */ - /* XXX: since we have opened the file, it is unnecessary - * to check permission when close it. Between the "open" - * and "close", maybe someone has changed the file mode - * or flags, or the file created mode do not permit wirte, - * and so on. Just set MDS_PERM_BYPASS for all the cases. */ - info->mti_attr.ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM; - info->mti_attr.ma_attr.la_valid &= LA_SIZE | LA_BLOCKS | - LA_ATIME | LA_MTIME | LA_CTIME; - RETURN(mdt_attr_set(info, o, 0)); - } else - mdt_sizeonmds_enable(info, o); - RETURN(0); + CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64 + " on "DFID".\n", enable ? "update" : "disabling", + ioepoch, PFID(mdt_object_fid(obj))); + + ma->ma_valid |= MA_SOM; + ma->ma_som = &info->mti_u.som.data; + if (enable) { + struct mdt_device *mdt = info->mti_mdt; + struct lu_attr *la = &ma->ma_attr; + + ma->ma_som->msd_ioepoch = ioepoch; + ma->ma_som->msd_size = la->la_valid & LA_SIZE ? la->la_size : 0; + ma->ma_som->msd_blocks = la->la_valid & LA_BLOCKS ? + la->la_blocks : 0; + ma->ma_som->msd_mountid = mdt->mdt_mount_count; + ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME; + } else { + ma->ma_som->msd_ioepoch = IOEPOCH_INVAL; + ma->ma_attr.la_valid &= LA_ATIME; + } + + /* Since we have opened the file, it is unnecessary + * to check permission when close it. Between the "open" + * and "close", maybe someone has changed the file mode + * or flags, or the file created mode do not permit wirte, + * and so on. Just set MDS_PERM_BYPASS for all the cases. */ + ma->ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM; + + rc = mdt_attr_set(info, obj, ma, 0); + RETURN(rc); } -/* Epoch closes. - * Returns 1 if epoch does not close. - * Returns 0 if epoch closes. - * Returns -EAGAIN if epoch closes but an Size-on-MDS Update is still needed - * from the client. */ -static int mdt_epoch_close(struct mdt_thread_info *info, struct mdt_object *o) +/** 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 eviction = (mdt_info_req(info) == NULL ? 1 : 0); - struct lu_attr *la = &info->mti_attr.ma_attr; - int achange = 0; - int opened; - int rc = 1; + int rc = 0; + + cfs_down(&o->mot_ioepoch_sem); + 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_up(&o->mot_ioepoch_sem); + 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; - if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) || - !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) - RETURN(0); + cfs_down(&o->mot_ioepoch_sem); + 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--; - spin_lock(&info->mti_mdt->mdt_ioepoch_lock); + /* 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; - /* Epoch closes only if client tells about it or eviction occures. */ - if (eviction || (info->mti_epoch->flags & MF_EPOCH_CLOSE)) { - LASSERT(o->mot_epochcount); - o->mot_epochcount--; + if (!mdt_ioepoch_opened(o)) + mdt_object_som_enable(o, info->mti_ioepoch->ioepoch); + cfs_up(&o->mot_ioepoch_sem); - CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n", - o->mot_ioepoch, PFID(mdt_object_fid(o)), - o->mot_epochcount); + RETURN(rc); +} - if (!eviction) - achange = (info->mti_epoch->flags & MF_SOM_CHANGE); +/** + * 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; - rc = 0; - if (!eviction && !mdt_epoch_opened(o)) { - /* Epoch ends. Is an Size-on-MDS update needed? */ - if (o->mot_flags & MF_SOM_CHANGE) { - /* Some previous writer changed the attribute. - * Do not believe to the current Size-on-MDS - * update, re-ask client. */ - rc = -EAGAIN; - } else if (!(la->la_valid & LA_SIZE) && achange) { - /* Attributes were changed by the last writer - * only but no Size-on-MDS update is received.*/ - rc = -EAGAIN; - } + la = &info->mti_attr.ma_attr; + achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE); + + cfs_down(&o->mot_ioepoch_sem); + 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 = mo_attr_get(info->mti_env, mdt_object_child(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); + } - if (achange || eviction) - o->mot_flags |= MF_SOM_CHANGE; + cfs_up(&o->mot_ioepoch_sem); + /* 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; } - opened = mdt_epoch_opened(o); - spin_unlock(&info->mti_mdt->mdt_ioepoch_lock); + RETURN(rc ? : ret); + +error_up: + cfs_up(&o->mot_ioepoch_sem); + return rc; +} + +/** + * Close IOEpoch (opened file or 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); +} - /* If eviction occurred, do nothing. */ - if ((rc == 0) && !opened && !eviction) { - /* Epoch ends and wanted Size-on-MDS update is obtained. */ - rc = mdt_sizeonmds_update(info, o); - /* Avoid the following setattrs of these attributes, e.g. - * for atime update. */ - info->mti_attr.ma_valid = 0; +/** + * Close 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_down(&o->mot_ioepoch_sem); + /* 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_up(&o->mot_ioepoch_sem); RETURN(rc); } -int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o) +int mdt_write_read(struct mdt_object *o) { int rc = 0; ENTRY; - spin_lock(&mdt->mdt_ioepoch_lock); + cfs_down(&o->mot_ioepoch_sem); rc = o->mot_writecount; - spin_unlock(&mdt->mdt_ioepoch_lock); + cfs_up(&o->mot_ioepoch_sem); RETURN(rc); } -int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o) +int mdt_write_get(struct mdt_object *o) { int rc = 0; ENTRY; - spin_lock(&mdt->mdt_ioepoch_lock); + cfs_down(&o->mot_ioepoch_sem); if (o->mot_writecount < 0) rc = -ETXTBSY; else o->mot_writecount++; - spin_unlock(&mdt->mdt_ioepoch_lock); + cfs_up(&o->mot_ioepoch_sem); RETURN(rc); } -static void mdt_write_put(struct mdt_device *mdt, struct mdt_object *o) +void mdt_write_put(struct mdt_object *o) { ENTRY; - spin_lock(&mdt->mdt_ioepoch_lock); + cfs_down(&o->mot_ioepoch_sem); o->mot_writecount--; - spin_unlock(&mdt->mdt_ioepoch_lock); + cfs_up(&o->mot_ioepoch_sem); EXIT; } -static int mdt_write_deny(struct mdt_device *mdt, struct mdt_object *o) +static int mdt_write_deny(struct mdt_object *o) { int rc = 0; ENTRY; - spin_lock(&mdt->mdt_ioepoch_lock); + cfs_down(&o->mot_ioepoch_sem); if (o->mot_writecount > 0) rc = -ETXTBSY; else o->mot_writecount--; - spin_unlock(&mdt->mdt_ioepoch_lock); + cfs_up(&o->mot_ioepoch_sem); RETURN(rc); } -static void mdt_write_allow(struct mdt_device *mdt, struct mdt_object *o) +static void mdt_write_allow(struct mdt_object *o) { ENTRY; - spin_lock(&mdt->mdt_ioepoch_lock); + cfs_down(&o->mot_ioepoch_sem); o->mot_writecount++; - spin_unlock(&mdt->mdt_ioepoch_lock); + cfs_up(&o->mot_ioepoch_sem); EXIT; } @@ -343,13 +551,13 @@ static void mdt_empty_transno(struct mdt_thread_info* info) struct ptlrpc_request *req = mdt_info_req(info); ENTRY; - /* transaction is occured already */ + /* transaction has occurred already */ if (lustre_msg_get_transno(req->rq_repmsg) != 0) { EXIT; return; } - spin_lock(&mdt->mdt_transno_lock); + cfs_spin_lock(&mdt->mdt_transno_lock); if (info->mti_transno == 0) { info->mti_transno = ++ mdt->mdt_last_transno; } else { @@ -357,15 +565,14 @@ static void mdt_empty_transno(struct mdt_thread_info* info) if (info->mti_transno > mdt->mdt_last_transno) mdt->mdt_last_transno = info->mti_transno; } - spin_unlock(&mdt->mdt_transno_lock); + cfs_spin_unlock(&mdt->mdt_transno_lock); - CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n", + CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\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); - lustre_msg_set_last_xid(req->rq_repmsg, req->rq_xid); EXIT; } @@ -395,7 +602,7 @@ 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)) { /* * 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 @@ -423,13 +630,13 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, } if (flags & FMODE_WRITE) { - rc = mdt_write_get(info->mti_mdt, o); + rc = mdt_write_get(o); if (rc == 0) { - mdt_epoch_open(info, o); + mdt_ioepoch_open(info, o, created); repbody->ioepoch = o->mot_ioepoch; } } else if (flags & MDS_FMODE_EXEC) { - rc = mdt_write_deny(info->mti_mdt, o); + rc = mdt_write_deny(o); } if (rc) RETURN(rc); @@ -470,24 +677,36 @@ static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p, 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 cookie" LPX64"\n", - mfd, info->mti_rr.rr_handle->cookie); - spin_lock(&med->med_open_lock); + 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); - list_del_init(&old_mfd->mfd_list); - spin_unlock(&med->med_open_lock); - mdt_mfd_free(old_mfd); + cfs_list_del_init(&old_mfd->mfd_list); + cfs_spin_unlock(&med->med_open_lock); + mdt_mfd_close(info, old_mfd); } 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; } - spin_lock(&med->med_open_lock); - list_add(&mfd->mfd_list, &med->med_open_head); - spin_unlock(&med->med_open_lock); - 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); + } + mdt_empty_transno(info); } else rc = -ENOMEM; @@ -501,15 +720,15 @@ static int mdt_finish_open(struct mdt_thread_info *info, int 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 mdt_device *mdt = info->mti_mdt; 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; + cfs_list_t *t; ENTRY; LASSERT(ma->ma_valid & MA_INODE); @@ -521,7 +740,7 @@ static 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 (med->med_rmtclient) { + if (exp_connect_rmtclient(exp)) { void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL); rc = mdt_pack_remote_perm(info, o, buf); @@ -534,7 +753,7 @@ static int mdt_finish_open(struct mdt_thread_info *info, } } #ifdef CONFIG_FS_POSIX_ACL - else if (req->rq_export->exp_connect_flags & OBD_CONNECT_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; @@ -564,26 +783,26 @@ static int mdt_finish_open(struct mdt_thread_info *info, } #endif - if (mdt->mdt_opts.mo_mds_capa) { + if (info->mti_mdt->mdt_opts.mo_mds_capa && + exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) { struct lustre_capa *capa; capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1); LASSERT(capa); capa->lc_opc = CAPA_OPC_MDS_DEFAULT; - capa->lc_uid = 0; rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0); if (rc) RETURN(rc); repbody->valid |= OBD_MD_FLMDSCAPA; } - if (mdt->mdt_opts.mo_oss_capa && + 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); - capa->lc_uid = 0; rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0); if (rc) RETURN(rc); @@ -625,15 +844,15 @@ static int mdt_finish_open(struct mdt_thread_info *info, 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); + 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; } - spin_unlock(&med->med_open_lock); + cfs_spin_unlock(&med->med_open_lock); if (mfd != NULL) { repbody->handle.cookie = mfd->mfd_handle.h_cookie; @@ -683,7 +902,10 @@ void mdt_reconstruct_open(struct mdt_thread_info *info, ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD); ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD, RCL_SERVER); - ma->ma_need = MA_INODE | MA_LOV; + ma->ma_need = MA_INODE; + if (ma->ma_lmm_size > 0) + ma->ma_need |= MA_LOV; + ma->ma_valid = 0; mdt_req_from_lcd(req, med->med_lcd); @@ -717,12 +939,13 @@ void mdt_reconstruct_open(struct mdt_thread_info *info, } child = mdt_object_find(env, mdt, rr->rr_fid2); if (IS_ERR(child)) { - rc = PTR_ERR(parent); + 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); EXIT; return; @@ -803,6 +1026,68 @@ static int mdt_open_by_fid(struct mdt_thread_info* info, RETURN(rc); } +static int mdt_open_anon_by_fid(struct mdt_thread_info* info, + struct ldlm_reply *rep, + struct mdt_lock_handle *lhc) +{ + __u32 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; + int rc; + ldlm_mode_t lm; + ENTRY; + + o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2); + if (IS_ERR(o)) + RETURN(rc = PTR_ERR(o)); + + rc = mdt_object_exists(o); + if (rc == 0) { + mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD | + DISP_LOOKUP_NEG)); + GOTO(out, rc = -ENOENT); + } else if (rc < 0) { + CERROR("NFS remote open shouldn't happen.\n"); + GOTO(out, rc); + } + + mdt_set_disposition(info, rep, (DISP_IT_EXECD | + DISP_LOOKUP_EXECD | + DISP_LOOKUP_POS)); + + if (flags & FMODE_WRITE) + lm = LCK_CW; + else if (flags & MDS_FMODE_EXEC) + lm = LCK_PR; + else + lm = LCK_CR; + + mdt_lock_handle_init(lhc); + mdt_lock_reg_init(lhc, lm); + rc = mdt_object_lock(info, o, lhc, + MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN, + MDT_CROSS_LOCK); + if (rc) + GOTO(out, rc); + + rc = mo_attr_get(info->mti_env, mdt_object_child(o), ma); + if (rc) + GOTO(out, rc); + + if (flags & MDS_OPEN_LOCK) + mdt_set_disposition(info, rep, DISP_OPEN_LOCK); + rc = mdt_finish_open(info, NULL, o, flags, 0, rep); + + if (!(flags & MDS_OPEN_LOCK)) + mdt_object_unlock(info, o, lhc, 1); + + GOTO(out, rc); +out: + mdt_object_put(info->mti_env, o); + return rc; +} + int mdt_pin(struct mdt_thread_info* info) { ENTRY; @@ -884,19 +1169,25 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) 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 | MA_LOV; + 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); ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP); - /* TODO: JOIN file */ - if (create_flags & MDS_OPEN_JOIN_FILE) { - CERROR("JOIN file will be supported soon\n"); + if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) { + CERROR("file join is not supported anymore.\n"); GOTO(out, result = err_serious(-EOPNOTSUPP)); } msg_flags = lustre_msg_get_flags(req->rq_reqmsg); + if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) && + 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=0%o mode=0%06o msg_flag=0x%x\n", PFID(rr->rr_fid1), rr->rr_name, @@ -924,6 +1215,10 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) } CDEBUG(D_INFO, "Open replay did find object, continue as " "regular open\n"); + } else if (rr->rr_namelen == 0 && !info->mti_cross_ref && + create_flags & MDS_OPEN_LOCK) { + result = mdt_open_anon_by_fid(info, ldlm_rep, lhc); + GOTO(out, result); } if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) @@ -994,6 +1289,12 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) /* Not found and with MDS_OPEN_CREAT: let's create it. */ mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE); + info->mti_mos[0] = parent; + info->mti_mos[1] = child; + result = mdt_version_get_check(info, 0); + if (result) + GOTO(out_child, result); + /* Let lower layers know what is lock mode on directory. */ info->mti_spec.sp_cr_mode = mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode); @@ -1003,6 +1304,7 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) * not exist. */ 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), @@ -1070,7 +1372,6 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) if (!(msg_flags & MSG_REPLAY) && create_flags & MDS_OPEN_LOCK) { ldlm_mode_t lm; - LASSERT(!created); if (create_flags & FMODE_WRITE) lm = LCK_CW; else if (create_flags & MDS_FMODE_EXEC) @@ -1118,7 +1419,7 @@ int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) out_child: mdt_object_put(info->mti_env, child); out_parent: - mdt_object_unlock_put(info, parent, lh, result); + mdt_object_unlock_put(info, parent, lh, result || !created); out: if (result && result != -EREMOTE) lustre_msg_set_transno(req->rq_repmsg, 0); @@ -1126,7 +1427,7 @@ out: } #define MFD_CLOSED(mode) (((mode) & ~(FMODE_EPOCH | FMODE_SOM | \ - FMODE_EPOCHLCK)) == FMODE_CLOSED) + FMODE_TRUNC)) == FMODE_CLOSED) static int mdt_mfd_closed(struct mdt_file_data *mfd) { @@ -1138,19 +1439,22 @@ 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 rc = 0, ret = 0; + int ret = MDT_IOEPOCH_CLOSED; + int rc = 0; int mode; ENTRY; mode = mfd->mfd_mode; - if ((mode & FMODE_WRITE) || (mode & FMODE_EPOCHLCK)) { - mdt_write_put(info->mti_mdt, o); - ret = mdt_epoch_close(info, o); + if ((mode & FMODE_WRITE) || (mode & FMODE_TRUNC)) { + mdt_write_put(o); + ret = mdt_ioepoch_close(info, o); } else if (mode & MDS_FMODE_EXEC) { - mdt_write_allow(info->mti_mdt, o); + mdt_write_allow(o); } else if (mode & FMODE_EPOCH) { - ret = mdt_epoch_close(info, o); + ret = mdt_ioepoch_close(info, o); + } else if (mode & FMODE_SOM) { + ret = mdt_som_au_close(info, o); } /* Update atime on close only. */ @@ -1166,33 +1470,27 @@ int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd) if (!MFD_CLOSED(mode)) rc = mo_close(info->mti_env, next, ma); - else if (ret == -EAGAIN) - rc = mo_attr_get(info->mti_env, next, ma); - - /* If the object is unlinked, do not try to re-enable SIZEONMDS */ - if ((ret == -EAGAIN) && (ma->ma_valid & MA_INODE) && - (ma->ma_attr.la_nlink == 0)) { - ret = 0; - } - if ((ret == -EAGAIN) || (ret == 1)) { + if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) { struct mdt_export_data *med; - /* The epoch has not closed or Size-on-MDS update is needed. + /* 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 == 1 ? FMODE_EPOCH : FMODE_SOM)); + mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ? + FMODE_EPOCH : FMODE_SOM); LASSERT(mdt_info_req(info)); med = &mdt_info_req(info)->rq_export->exp_mdt_data; - spin_lock(&med->med_open_lock); - list_add(&mfd->mfd_list, &med->med_open_head); + cfs_spin_lock(&med->med_open_lock); + cfs_list_add(&mfd->mfd_list, &med->med_open_head); class_handle_hash_back(&mfd->mfd_handle); - spin_unlock(&med->med_open_lock); + cfs_spin_unlock(&med->med_open_lock); - if (ret == 1) { + 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))); } @@ -1220,15 +1518,18 @@ int mdt_close(struct mdt_thread_info *info) if (rc) RETURN(err_serious(rc)); - LASSERT(info->mti_epoch); + LASSERT(info->mti_ioepoch); req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER, info->mti_mdt->mdt_max_mdsize); req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER, info->mti_mdt->mdt_max_cookiesize); rc = req_capsule_server_pack(info->mti_pill); - if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) + if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) { + if (rc == 0) + mdt_shrink_reply(info); RETURN(lustre_msg_get_status(req->rq_repmsg)); + } /* Continue to close handle even if we can not pack reply */ if (rc == 0) { @@ -1247,22 +1548,24 @@ int mdt_close(struct mdt_thread_info *info) ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE; repbody->eadatasize = 0; repbody->aclsize = 0; - } else + } else { rc = err_serious(rc); + } med = &req->rq_export->exp_mdt_data; - spin_lock(&med->med_open_lock); - mfd = mdt_handle2mfd(info, &info->mti_epoch->handle); + cfs_spin_lock(&med->med_open_lock); + mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); if (mdt_mfd_closed(mfd)) { - spin_unlock(&med->med_open_lock); + 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_epoch->handle.cookie); - rc = err_serious(-ESTALE); + info->mti_ioepoch->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); + 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; @@ -1285,8 +1588,17 @@ int mdt_close(struct mdt_thread_info *info) 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; @@ -1308,29 +1620,45 @@ int mdt_done_writing(struct mdt_thread_info *info) RETURN(err_serious(rc)); if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) - RETURN(lustre_msg_get_status(mdt_info_req(info)->rq_repmsg)); + RETURN(lustre_msg_get_status(req->rq_repmsg)); med = &info->mti_exp->exp_mdt_data; - spin_lock(&med->med_open_lock); - mfd = mdt_handle2mfd(info, &info->mti_epoch->handle); + cfs_spin_lock(&med->med_open_lock); + mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); if (mfd == NULL) { - spin_unlock(&med->med_open_lock); + cfs_spin_unlock(&med->med_open_lock); CDEBUG(D_INODE, "no handle for done write: fid = "DFID - ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1), - info->mti_epoch->handle.cookie); + ": 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) { + mdt_empty_transno(info); + RETURN(info->mti_ioepoch->flags & MF_SOM_AU ? + -EAGAIN : 0); + } RETURN(-ESTALE); } LASSERT(mfd->mfd_mode == FMODE_EPOCH || - mfd->mfd_mode == FMODE_EPOCHLCK); + mfd->mfd_mode == FMODE_TRUNC); class_handle_unhash(&mfd->mfd_handle); - list_del_init(&mfd->mfd_list); - spin_unlock(&med->med_open_lock); + 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_epoch->flags |= MF_EPOCH_CLOSE; + 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(info->mti_attr.ma_lmm, info->mti_attr.ma_lmm_size); + if (info->mti_attr.ma_lmm == NULL) + RETURN(-ENOMEM); + rc = mdt_mfd_close(info, mfd); + + OBD_FREE(info->mti_attr.ma_lmm, info->mti_attr.ma_lmm_size); mdt_empty_transno(info); RETURN(rc); }