X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fosd-ldiskfs%2Fosd_compat.c;h=bf317d0919040e950070f3a7b82144b13ba8f620;hp=c89094795cfef24446db080be5b5a7c49b54c5bf;hb=948794929c5724e6a78b2c470bf97bcea1a67555;hpb=e3a7c58aebafce40323db54bf6056029e5af4a70 diff --git a/lustre/osd-ldiskfs/osd_compat.c b/lustre/osd-ldiskfs/osd_compat.c index c890947..bf317d0 100644 --- a/lustre/osd-ldiskfs/osd_compat.c +++ b/lustre/osd-ldiskfs/osd_compat.c @@ -27,7 +27,7 @@ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2012, Whamcloud, Inc. + * Copyright (c) 2012, 2014, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -35,7 +35,7 @@ * * lustre/osd/osd_compat.c * - * on-disk compatibility stuff for OST + * on-disk structure for managing /O * * Author: Alex Zhuravlev */ @@ -46,139 +46,87 @@ #include /* prerequisite for linux/xattr.h */ #include +/* XATTR_{REPLACE,CREATE} */ +#include /* * struct OBD_{ALLOC,FREE}*() * OBD_FAIL_CHECK */ #include -#include #include "osd_internal.h" - -struct osd_compat_objid_seq { - /* protects on-fly initialization */ - cfs_semaphore_t dir_init_sem; - /* file storing last created objid */ - struct osd_inode_id last_id; - struct dentry *groot; /* O/ */ - struct dentry **dirs; /* O//d0-dXX */ -}; - -#define MAX_OBJID_GROUP (FID_SEQ_ECHO + 1) - -struct osd_compat_objid { - int subdir_count; - struct dentry *root; - struct osd_inode_id last_rcvd_id; - struct osd_inode_id last_seq_id; - struct osd_compat_objid_seq groups[MAX_OBJID_GROUP]; -}; +#include "osd_oi.h" static void osd_push_ctxt(const struct osd_device *dev, struct lvfs_run_ctxt *newctxt, struct lvfs_run_ctxt *save) { - OBD_SET_CTXT_MAGIC(newctxt); - newctxt->pwdmnt = dev->od_mnt; - newctxt->pwd = dev->od_mnt->mnt_root; - newctxt->fs = get_ds(); - - push_ctxt(save, newctxt, NULL); -} - -void osd_compat_seq_fini(struct osd_device *osd, int seq) -{ - struct osd_compat_objid_seq *grp; - struct osd_compat_objid *map = osd->od_ost_map; - int i; - - ENTRY; - - grp = &map->groups[seq]; - if (grp->groot ==NULL) - RETURN_EXIT; - LASSERT(grp->dirs); - - for (i = 0; i < map->subdir_count; i++) { - if (grp->dirs[i] == NULL) - break; - dput(grp->dirs[i]); - } - - OBD_FREE(grp->dirs, sizeof(struct dentry *) * map->subdir_count); - dput(grp->groot); - EXIT; + OBD_SET_CTXT_MAGIC(newctxt); + newctxt->pwdmnt = dev->od_mnt; + newctxt->pwd = dev->od_mnt->mnt_root; + newctxt->fs = get_ds(); + newctxt->umask = current_umask(); + newctxt->dt = NULL; + + push_ctxt(save, newctxt); } -int osd_compat_seq_init(struct osd_device *osd, int seq) +/* utility to make a directory */ +static struct dentry *simple_mkdir(struct dentry *dir, struct vfsmount *mnt, + const char *name, int mode, int fix) { - struct osd_compat_objid_seq *grp; - struct osd_compat_objid *map; - struct dentry *d; - int rc = 0; - char name[32]; - int i; - ENTRY; - - map = osd->od_ost_map; - LASSERT(map); - LASSERT(map->root); - grp = &map->groups[seq]; - - if (grp->groot != NULL) - RETURN(0); - - cfs_down(&grp->dir_init_sem); - - sprintf(name, "%d", seq); - d = simple_mkdir(map->root, osd->od_mnt, name, 0755, 1); - if (IS_ERR(d)) { - rc = PTR_ERR(d); - GOTO(out, rc); - } else if (d->d_inode == NULL) { - rc = -EFAULT; - dput(d); - GOTO(out, rc); - } - - LASSERT(grp->dirs == NULL); - OBD_ALLOC(grp->dirs, sizeof(d) * map->subdir_count); - if (grp->dirs == NULL) { - dput(d); - GOTO(out, rc = -ENOMEM); - } - - grp->groot = d; - for (i = 0; i < map->subdir_count; i++) { - sprintf(name, "d%d", i); - d = simple_mkdir(grp->groot, osd->od_mnt, name, 0755, 1); - if (IS_ERR(d)) { - rc = PTR_ERR(d); - break; - } else if (d->d_inode == NULL) { - rc = -EFAULT; - dput(d); - break; - } - - grp->dirs[i] = d; - } - - if (rc) - osd_compat_seq_fini(osd, seq); -out: - cfs_up(&grp->dir_init_sem); - RETURN(rc); + struct dentry *dchild; + int err = 0; + ENTRY; + + // ASSERT_KERNEL_CTXT("kernel doing mkdir outside kernel context\n"); + CDEBUG(D_INODE, "creating directory %.*s\n", (int)strlen(name), name); + dchild = ll_lookup_one_len(name, dir, strlen(name)); + if (IS_ERR(dchild)) + GOTO(out_up, dchild); + + if (dchild->d_inode) { + int old_mode = dchild->d_inode->i_mode; + if (!S_ISDIR(old_mode)) { + CERROR("found %s (%lu/%u) is mode %o\n", name, + dchild->d_inode->i_ino, + dchild->d_inode->i_generation, old_mode); + GOTO(out_err, err = -ENOTDIR); + } + + /* Fixup directory permissions if necessary */ + if (fix && (old_mode & S_IALLUGO) != (mode & S_IALLUGO)) { + CDEBUG(D_CONFIG, + "fixing permissions on %s from %o to %o\n", + name, old_mode, mode); + dchild->d_inode->i_mode = (mode & S_IALLUGO) | + (old_mode & ~S_IALLUGO); + mark_inode_dirty(dchild->d_inode); + } + GOTO(out_up, dchild); + } + + err = vfs_mkdir(dir->d_inode, dchild, mode); + if (err) + GOTO(out_err, err); + + RETURN(dchild); + +out_err: + dput(dchild); + dchild = ERR_PTR(err); +out_up: + return dchild; } -int osd_last_rcvd_subdir_count(struct osd_device *osd) +static int osd_last_rcvd_subdir_count(struct osd_device *osd) { struct lr_server_data lsd; struct dentry *dlast; loff_t off; int rc = 0; - int count = 0; + int count = OBJ_SUBDIR_COUNT; ENTRY; @@ -195,39 +143,202 @@ int osd_last_rcvd_subdir_count(struct osd_device *osd) CDEBUG(D_INFO, "read last_rcvd header, uuid = %s, " "subdir count = %d\n", lsd.lsd_uuid, lsd.lsd_subdir_count); - count = le16_to_cpu(lsd.lsd_subdir_count); - } else if (rc != 0) { - CERROR("Can't read last_rcvd file, rc = %d\n", rc); - if (rc > 0) - rc = -EFAULT; - goto out; - } else { - count = FILTER_SUBDIR_COUNT; - } - - rc = count; + if (le16_to_cpu(lsd.lsd_subdir_count) > 0) + count = le16_to_cpu(lsd.lsd_subdir_count); + } else if (rc != 0) { + CERROR("Can't read last_rcvd file, rc = %d\n", rc); + if (rc > 0) + rc = -EFAULT; + dput(dlast); + return rc; + } out: - dput(dlast); - return rc; + dput(dlast); + LASSERT(count > 0); + return count; } -void osd_compat_fini(struct osd_device *dev) +static const char remote_parent_dir[] = "REMOTE_PARENT_DIR"; +static int osd_mdt_init(const struct lu_env *env, struct osd_device *dev) { - int i; + struct lvfs_run_ctxt new; + struct lvfs_run_ctxt save; + struct dentry *parent; + struct osd_mdobj_map *omm; + struct dentry *d; + struct osd_thread_info *info = osd_oti_get(env); + struct lu_fid *fid = &info->oti_fid3; + int rc = 0; + ENTRY; - ENTRY; + OBD_ALLOC_PTR(dev->od_mdt_map); + if (dev->od_mdt_map == NULL) + RETURN(-ENOMEM); + + omm = dev->od_mdt_map; + + parent = osd_sb(dev)->s_root; + osd_push_ctxt(dev, &new, &save); + + d = simple_mkdir(parent, dev->od_mnt, remote_parent_dir, + 0755, 1); + if (IS_ERR(d)) + GOTO(cleanup, rc = PTR_ERR(d)); - if (dev->od_ost_map == NULL) - RETURN_EXIT; + omm->omm_remote_parent = d; - for (i = 0; i < MAX_OBJID_GROUP; i++) - osd_compat_seq_fini(dev, i); + /* Set LMA for remote parent inode */ + lu_local_obj_fid(fid, REMOTE_PARENT_DIR_OID); + rc = osd_ea_fid_set(info, d->d_inode, fid, LMAC_NOT_IN_OI, 0); - dput(dev->od_ost_map->root); - OBD_FREE_PTR(dev->od_ost_map); - dev->od_ost_map = NULL; + GOTO(cleanup, rc); - EXIT; +cleanup: + pop_ctxt(&save, &new); + if (rc) { + if (omm->omm_remote_parent != NULL) + dput(omm->omm_remote_parent); + OBD_FREE_PTR(omm); + dev->od_mdt_map = NULL; + } + return rc; +} + +static void osd_mdt_fini(struct osd_device *osd) +{ + struct osd_mdobj_map *omm = osd->od_mdt_map; + + if (omm == NULL) + return; + + if (omm->omm_remote_parent) + dput(omm->omm_remote_parent); + + OBD_FREE_PTR(omm); + osd->od_ost_map = NULL; +} + +int osd_add_to_remote_parent(const struct lu_env *env, struct osd_device *osd, + struct osd_object *obj, struct osd_thandle *oh) +{ + struct osd_mdobj_map *omm = osd->od_mdt_map; + struct osd_thread_info *oti = osd_oti_get(env); + struct lustre_mdt_attrs *lma = &oti->oti_mdt_attrs; + char *name = oti->oti_name; + struct dentry *dentry; + struct dentry *parent; + int rc; + + /* Set REMOTE_PARENT in lma, so other process like unlink or lfsck + * can identify this object quickly */ + rc = osd_get_lma(oti, obj->oo_inode, &oti->oti_obj_dentry, lma); + if (rc != 0) + RETURN(rc); + + lma->lma_incompat |= LMAI_REMOTE_PARENT; + lustre_lma_swab(lma); + rc = __osd_xattr_set(oti, obj->oo_inode, XATTR_NAME_LMA, lma, + sizeof(*lma), XATTR_REPLACE); + if (rc != 0) + RETURN(rc); + + parent = omm->omm_remote_parent; + sprintf(name, DFID_NOBRACE, PFID(lu_object_fid(&obj->oo_dt.do_lu))); + dentry = osd_child_dentry_by_inode(env, parent->d_inode, + name, strlen(name)); + mutex_lock(&parent->d_inode->i_mutex); + rc = osd_ldiskfs_add_entry(oh->ot_handle, dentry, obj->oo_inode, + NULL); + CDEBUG(D_INODE, "%s: add %s:%lu to remote parent %lu.\n", osd_name(osd), + name, obj->oo_inode->i_ino, parent->d_inode->i_ino); + ldiskfs_inc_count(oh->ot_handle, parent->d_inode); + mark_inode_dirty(parent->d_inode); + mutex_unlock(&parent->d_inode->i_mutex); + RETURN(rc); +} + +int osd_delete_from_remote_parent(const struct lu_env *env, + struct osd_device *osd, + struct osd_object *obj, + struct osd_thandle *oh) +{ + struct osd_mdobj_map *omm = osd->od_mdt_map; + struct osd_thread_info *oti = osd_oti_get(env); + struct lustre_mdt_attrs *lma = &oti->oti_mdt_attrs; + char *name = oti->oti_name; + struct dentry *dentry; + struct dentry *parent; + struct ldiskfs_dir_entry_2 *de; + struct buffer_head *bh; + int rc; + + /* Check lma to see whether it is remote object */ + rc = osd_get_lma(oti, obj->oo_inode, &oti->oti_obj_dentry, lma); + if (rc != 0) + RETURN(rc); + + if (likely(!(lma->lma_incompat & LMAI_REMOTE_PARENT))) + RETURN(0); + + parent = omm->omm_remote_parent; + sprintf(name, DFID_NOBRACE, PFID(lu_object_fid(&obj->oo_dt.do_lu))); + dentry = osd_child_dentry_by_inode(env, parent->d_inode, + name, strlen(name)); + mutex_lock(&parent->d_inode->i_mutex); + bh = osd_ldiskfs_find_entry(parent->d_inode, &dentry->d_name, &de, + NULL, NULL); + if (bh == NULL) { + mutex_unlock(&parent->d_inode->i_mutex); + RETURN(-ENOENT); + } + CDEBUG(D_INODE, "%s: el %s:%lu to remote parent %lu.\n", osd_name(osd), + name, obj->oo_inode->i_ino, parent->d_inode->i_ino); + rc = ldiskfs_delete_entry(oh->ot_handle, parent->d_inode, de, bh); + ldiskfs_dec_count(oh->ot_handle, parent->d_inode); + mark_inode_dirty(parent->d_inode); + mutex_unlock(&parent->d_inode->i_mutex); + brelse(bh); + + /* Get rid of REMOTE_PARENT flag from incompat */ + lma->lma_incompat &= ~LMAI_REMOTE_PARENT; + lustre_lma_swab(lma); + rc = __osd_xattr_set(oti, obj->oo_inode, XATTR_NAME_LMA, lma, + sizeof(*lma), XATTR_REPLACE); + RETURN(rc); +} + +int osd_lookup_in_remote_parent(struct osd_thread_info *oti, + struct osd_device *osd, + const struct lu_fid *fid, + struct osd_inode_id *id) +{ + struct osd_mdobj_map *omm = osd->od_mdt_map; + char *name = oti->oti_name; + struct dentry *parent; + struct dentry *dentry; + struct ldiskfs_dir_entry_2 *de; + struct buffer_head *bh; + int rc; + ENTRY; + + parent = omm->omm_remote_parent; + sprintf(name, DFID_NOBRACE, PFID(fid)); + dentry = osd_child_dentry_by_inode(oti->oti_env, parent->d_inode, + name, strlen(name)); + mutex_lock(&parent->d_inode->i_mutex); + bh = osd_ldiskfs_find_entry(parent->d_inode, &dentry->d_name, &de, + NULL, NULL); + if (bh == NULL) { + rc = -ENOENT; + } else { + rc = 0; + osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN); + brelse(bh); + } + mutex_unlock(&parent->d_inode->i_mutex); + if (rc == 0) + osd_add_oi_cache(oti, osd, id, fid); + RETURN(rc); } /* @@ -240,341 +351,912 @@ void osd_compat_fini(struct osd_device *dev) * CONFIGS * */ -int osd_compat_init(struct osd_device *dev) +static int osd_ost_init(const struct lu_env *env, struct osd_device *dev) { - struct lvfs_run_ctxt new; - struct lvfs_run_ctxt save; - struct dentry *rootd = osd_sb(dev)->s_root; - struct dentry *d; - int rc; - int i; - - ENTRY; - - /* to get subdir count from last_rcvd */ - rc = osd_last_rcvd_subdir_count(dev); - if (rc <= 0) - RETURN(rc); - - dev->od_ost_map->subdir_count = rc; + struct lvfs_run_ctxt new; + struct lvfs_run_ctxt save; + struct dentry *rootd = osd_sb(dev)->s_root; + struct dentry *d; + struct osd_thread_info *info = osd_oti_get(env); + struct inode *inode; + struct lu_fid *fid = &info->oti_fid3; + int rc; + ENTRY; + + OBD_ALLOC_PTR(dev->od_ost_map); + if (dev->od_ost_map == NULL) + RETURN(-ENOMEM); + + /* to get subdir count from last_rcvd */ + rc = osd_last_rcvd_subdir_count(dev); + if (rc < 0) + GOTO(cleanup_alloc, rc); + + dev->od_ost_map->om_subdir_count = rc; rc = 0; - OBD_ALLOC_PTR(dev->od_ost_map); - if (dev->od_ost_map == NULL) - RETURN(-ENOMEM); + INIT_LIST_HEAD(&dev->od_ost_map->om_seq_list); + rwlock_init(&dev->od_ost_map->om_seq_list_lock); + mutex_init(&dev->od_ost_map->om_dir_init_mutex); - LASSERT(dev->od_fsops); osd_push_ctxt(dev, &new, &save); - d = simple_mkdir(rootd, dev->od_mnt, "O", 0755, 1); - pop_ctxt(&save, &new, NULL); - if (IS_ERR(d)) { - OBD_FREE_PTR(dev->od_ost_map); - RETURN(PTR_ERR(d)); - } + d = ll_lookup_one_len("O", rootd, strlen("O")); + if (IS_ERR(d)) + GOTO(cleanup_ctxt, rc = PTR_ERR(d)); + if (d->d_inode == NULL) { + dput(d); + /* The lookup() may be called again inside simple_mkdir(). + * Since the repeated lookup() only be called for "/O" at + * mount time, it will not affect the whole performance. */ + d = simple_mkdir(rootd, dev->od_mnt, "O", 0755, 1); + if (IS_ERR(d)) + GOTO(cleanup_ctxt, rc = PTR_ERR(d)); + + /* It is quite probably that the device is new formatted. */ + dev->od_maybe_new = 1; + } + + inode = d->d_inode; + dev->od_ost_map->om_root = d; + + /* 'What the @fid is' is not imporatant, because the object + * has no OI mapping, and only is visible inside the OSD.*/ + lu_igif_build(fid, inode->i_ino, inode->i_generation); + rc = osd_ea_fid_set(info, inode, fid, + LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0); + if (rc) + GOTO(cleanup_dentry, rc); + + pop_ctxt(&save, &new); + RETURN(0); + +cleanup_dentry: + dput(d); +cleanup_ctxt: + pop_ctxt(&save, &new); +cleanup_alloc: + OBD_FREE_PTR(dev->od_ost_map); + return rc; +} + +static void osd_seq_free(struct osd_obj_map *map, + struct osd_obj_seq *osd_seq) +{ + int j; - dev->od_ost_map->root = d; + list_del_init(&osd_seq->oos_seq_list); - /* Initialize all groups */ - for (i = 0; i < MAX_OBJID_GROUP; i++) { - cfs_sema_init(&dev->od_ost_map->groups[i].dir_init_sem, 1); - rc = osd_compat_seq_init(dev, i); - if (rc) { - osd_compat_fini(dev); - break; + if (osd_seq->oos_dirs) { + for (j = 0; j < osd_seq->oos_subdir_count; j++) { + if (osd_seq->oos_dirs[j]) + dput(osd_seq->oos_dirs[j]); } + OBD_FREE(osd_seq->oos_dirs, + sizeof(struct dentry *) * osd_seq->oos_subdir_count); } - RETURN(rc); + if (osd_seq->oos_root) + dput(osd_seq->oos_root); + + OBD_FREE_PTR(osd_seq); } -int osd_compat_del_entry(struct osd_thread_info *info, struct osd_device *osd, - struct dentry *dird, char *name, struct thandle *th) +static void osd_ost_fini(struct osd_device *osd) { - struct ldiskfs_dir_entry_2 *de; - struct buffer_head *bh; - struct osd_thandle *oh; - struct dentry *child; - struct inode *dir = dird->d_inode; - int rc; + struct osd_obj_seq *osd_seq; + struct osd_obj_seq *tmp; + struct osd_obj_map *map = osd->od_ost_map; + ENTRY; + + if (map == NULL) + return; + + write_lock(&map->om_seq_list_lock); + list_for_each_entry_safe(osd_seq, tmp, &map->om_seq_list, + oos_seq_list) { + osd_seq_free(map, osd_seq); + } + write_unlock(&map->om_seq_list_lock); + if (map->om_root) + dput(map->om_root); + OBD_FREE_PTR(map); + osd->od_ost_map = NULL; + EXIT; +} - ENTRY; +int osd_obj_map_init(const struct lu_env *env, struct osd_device *dev) +{ + int rc; + ENTRY; - oh = container_of(th, struct osd_thandle, ot_super); - LASSERT(oh->ot_handle != NULL); - LASSERT(oh->ot_handle->h_transaction != NULL); + /* prepare structures for OST */ + rc = osd_ost_init(env, dev); + if (rc) + RETURN(rc); + /* prepare structures for MDS */ + rc = osd_mdt_init(env, dev); + if (rc) + osd_ost_fini(dev); - child = &info->oti_child_dentry; - child->d_name.hash = 0; - child->d_name.name = name; - child->d_name.len = strlen(name); - child->d_parent = dird; - child->d_inode = NULL; + RETURN(rc); +} - LOCK_INODE_MUTEX(dir); - rc = -ENOENT; - bh = osd_ldiskfs_find_entry(dir, child, &de, NULL); - if (bh) { - rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh); - brelse(bh); - } - UNLOCK_INODE_MUTEX(dir); +static struct osd_obj_seq *osd_seq_find_locked(struct osd_obj_map *map, u64 seq) +{ + struct osd_obj_seq *osd_seq; - RETURN(rc); + list_for_each_entry(osd_seq, &map->om_seq_list, oos_seq_list) { + if (osd_seq->oos_seq == seq) + return osd_seq; + } + return NULL; } -int osd_compat_add_entry(struct osd_thread_info *info, struct osd_device *osd, - struct dentry *dir, char *name, - const struct osd_inode_id *id, struct thandle *th) +static struct osd_obj_seq *osd_seq_find(struct osd_obj_map *map, u64 seq) { - struct osd_thandle *oh; - struct dentry *child; - struct inode *inode; - int rc; + struct osd_obj_seq *osd_seq; - ENTRY; + read_lock(&map->om_seq_list_lock); + osd_seq = osd_seq_find_locked(map, seq); + read_unlock(&map->om_seq_list_lock); + return osd_seq; +} - oh = container_of(th, struct osd_thandle, ot_super); - LASSERT(oh->ot_handle != NULL); - LASSERT(oh->ot_handle->h_transaction != NULL); +void osd_obj_map_fini(struct osd_device *dev) +{ + osd_ost_fini(dev); + osd_mdt_fini(dev); +} - inode = &info->oti_inode; - inode->i_sb = osd_sb(osd); - inode->i_ino = id->oii_ino; - inode->i_generation = id->oii_gen; +/** + * Update the specified OI mapping. + * + * \retval 1, changed nothing + * \retval 0, changed successfully + * \retval -ve, on error + */ +static int osd_obj_update_entry(struct osd_thread_info *info, + struct osd_device *osd, + struct dentry *dir, const char *name, + const struct lu_fid *fid, + const struct osd_inode_id *id, + handle_t *th) +{ + struct inode *parent = dir->d_inode; + struct dentry *child; + struct ldiskfs_dir_entry_2 *de; + struct buffer_head *bh; + struct inode *inode; + struct dentry *dentry = &info->oti_obj_dentry; + struct osd_inode_id *oi_id = &info->oti_id3; + struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs; + struct lu_fid *oi_fid = &lma->lma_self_fid; + int rc; + ENTRY; + + LASSERT(th != NULL); + LASSERT(th->h_transaction != NULL); + + child = &info->oti_child_dentry; + child->d_parent = dir; + child->d_name.hash = 0; + child->d_name.name = name; + child->d_name.len = strlen(name); + + ll_vfs_dq_init(parent); + mutex_lock(&parent->i_mutex); + bh = osd_ldiskfs_find_entry(parent, &child->d_name, &de, NULL, NULL); + if (bh == NULL) + GOTO(out, rc = -ENOENT); + + if (le32_to_cpu(de->inode) == id->oii_ino) + GOTO(out, rc = 1); + + osd_id_gen(oi_id, le32_to_cpu(de->inode), OSD_OII_NOGEN); + inode = osd_iget(info, osd, oi_id); + if (IS_ERR(inode)) { + rc = PTR_ERR(inode); + if (rc == -ENOENT || rc == -ESTALE) + goto update; + GOTO(out, rc); + } + + rc = osd_get_lma(info, inode, dentry, lma); + if (rc == -ENODATA) { + rc = osd_get_idif(info, inode, dentry, oi_fid); + if (rc > 0) { + oi_fid = NULL; + rc = 0; + } + } + iput(inode); + + /* If the OST-object has neither FID-in-LMA nor FID-in-ff, it is + * either a crashed object or a uninitialized one. Replace it. */ + if (rc == -ENODATA || oi_fid == NULL) + goto update; + + if (rc != 0) + GOTO(out, rc); + + if (lu_fid_eq(fid, oi_fid)) { + CERROR("%s: the FID "DFID" is used by two objects: " + "%u/%u %u/%u\n", osd_name(osd), PFID(fid), + oi_id->oii_ino, oi_id->oii_gen, + id->oii_ino, id->oii_gen); + GOTO(out, rc = -EEXIST); + } + +update: + /* There may be temporary inconsistency: On one hand, the new + * object may be referenced by multiple entries, which is out + * of our control unless we traverse the whole /O completely, + * which is non-flat order and inefficient, should be avoided; + * On the other hand, the old object may become orphan if it + * is still valid. Since it was referenced by an invalid entry, + * making it as invisible temporary may be not worse. OI scrub + * will process it later. */ + rc = ldiskfs_journal_get_write_access(th, bh); + if (rc != 0) + GOTO(out, rc); + + de->inode = cpu_to_le32(id->oii_ino); + rc = ldiskfs_handle_dirty_metadata(th, NULL, bh); + + GOTO(out, rc); - child = &info->oti_child_dentry; - child->d_name.hash = 0; - child->d_name.name = name; - child->d_name.len = strlen(name); - child->d_parent = dir; - child->d_inode = inode; +out: + brelse(bh); + mutex_unlock(&parent->i_mutex); + return rc; +} - LOCK_INODE_MUTEX(dir->d_inode); - rc = osd_ldiskfs_add_entry(oh->ot_handle, child, inode, NULL); - UNLOCK_INODE_MUTEX(dir->d_inode); +static int osd_obj_del_entry(struct osd_thread_info *info, + struct osd_device *osd, + struct dentry *dird, char *name, + handle_t *th) +{ + struct ldiskfs_dir_entry_2 *de; + struct buffer_head *bh; + struct dentry *child; + struct inode *dir = dird->d_inode; + int rc; + ENTRY; + + LASSERT(th != NULL); + LASSERT(th->h_transaction != NULL); + + + child = &info->oti_child_dentry; + child->d_name.hash = 0; + child->d_name.name = name; + child->d_name.len = strlen(name); + child->d_parent = dird; + child->d_inode = NULL; + + ll_vfs_dq_init(dir); + mutex_lock(&dir->i_mutex); + rc = -ENOENT; + bh = osd_ldiskfs_find_entry(dir, &child->d_name, &de, NULL, NULL); + if (bh) { + rc = ldiskfs_delete_entry(th, dir, de, bh); + brelse(bh); + } + mutex_unlock(&dir->i_mutex); + + RETURN(rc); +} - RETURN(rc); +static int osd_obj_add_entry(struct osd_thread_info *info, + struct osd_device *osd, + struct dentry *dir, char *name, + const struct osd_inode_id *id, + handle_t *th) +{ + struct dentry *child; + struct inode *inode; + int rc; + + ENTRY; + + if (OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_NO_ENTRY)) + RETURN(0); + + LASSERT(th != NULL); + LASSERT(th->h_transaction != NULL); + + inode = info->oti_inode; + if (unlikely(inode == NULL)) { + OBD_ALLOC_PTR(inode); + if (inode == NULL) + RETURN(-ENOMEM); + info->oti_inode = inode; + } + + inode->i_sb = osd_sb(osd); + osd_id_to_inode(inode, id); + inode->i_mode = S_IFREG; /* for type in ldiskfs dir entry */ + + child = &info->oti_child_dentry; + child->d_name.hash = 0; + child->d_name.name = name; + child->d_name.len = strlen(name); + child->d_parent = dir; + child->d_inode = inode; + + if (OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_INVALID_ENTRY)) + inode->i_ino++; + + ll_vfs_dq_init(dir->d_inode); + mutex_lock(&dir->d_inode->i_mutex); + rc = osd_ldiskfs_add_entry(th, child, inode, NULL); + mutex_unlock(&dir->d_inode->i_mutex); + + RETURN(rc); } -int osd_compat_objid_lookup(struct osd_thread_info *info, - struct osd_device *dev, const struct lu_fid *fid, - struct osd_inode_id *id) +/** + * Use LPU64 for legacy OST sequences, but use LPX64i for new + * sequences names, so that the O/{seq}/dN/{oid} more closely + * follows the DFID/PFID format. This makes it easier to map from + * debug messages to objects in the future, and the legacy space + * of FID_SEQ_OST_MDT0 will be unused in the future. + **/ +static inline void osd_seq_name(char *seq_name, size_t name_size, u64 seq) { - struct osd_compat_objid *map; - struct dentry *d; - struct dentry *d_seq; - struct ost_id *ostid = &info->oti_ostid; - int rc = 0; - int dirn; - char name[32]; - struct ldiskfs_dir_entry_2 *de; - struct buffer_head *bh; - struct inode *dir; - ENTRY; + snprintf(seq_name, name_size, + (fid_seq_is_rsvd(seq) || + fid_seq_is_mdt0(seq)) ? LPU64 : LPX64i, + fid_seq_is_idif(seq) ? 0 : seq); +} - /* on the very first lookup we find and open directories */ +static inline void osd_oid_name(char *name, size_t name_size, + const struct lu_fid *fid, u64 id) +{ + snprintf(name, name_size, + (fid_seq_is_rsvd(fid_seq(fid)) || + fid_seq_is_mdt0(fid_seq(fid)) || + fid_seq_is_idif(fid_seq(fid))) ? LPU64 : LPX64i, id); +} - map = dev->od_ost_map; - LASSERT(map); - LASSERT(map->root); - - fid_ostid_pack(fid, ostid); - LASSERT(ostid->oi_seq < MAX_OBJID_GROUP); - LASSERT(map->subdir_count > 0); - LASSERT(map->groups[ostid->oi_seq].groot); - - dirn = ostid->oi_id & (map->subdir_count - 1); - d = map->groups[ostid->oi_seq].dirs[dirn]; - LASSERT(d); - - sprintf(name, "%llu", ostid->oi_id); - d_seq = &info->oti_child_dentry; - d_seq->d_parent = d; - d_seq->d_name.hash = 0; - d_seq->d_name.name = name; - /* XXX: we can use rc from sprintf() instead of strlen() */ - d_seq->d_name.len = strlen(name); - - dir = d->d_inode; - LOCK_INODE_MUTEX(dir); - bh = osd_ldiskfs_find_entry(dir, d_seq, &de, NULL); - UNLOCK_INODE_MUTEX(dir); - - rc = -ENOENT; - if (bh) { - struct inode *inode; - - id->oii_ino = le32_to_cpu(de->inode); - brelse(bh); - - id->oii_gen = OSD_OII_NOGEN; - inode = osd_iget(info, dev, id); - - if (IS_ERR(inode)) - GOTO(cleanup, rc = PTR_ERR(inode)); - rc = 0; - id->oii_gen = inode->i_generation; - iput(inode); - } +/* external locking is required */ +static int osd_seq_load_locked(struct osd_thread_info *info, + struct osd_device *osd, + struct osd_obj_seq *osd_seq) +{ + struct osd_obj_map *map = osd->od_ost_map; + struct dentry *seq_dir; + struct inode *inode; + struct lu_fid *fid = &info->oti_fid3; + int rc = 0; + int i; + char dir_name[32]; + ENTRY; + + if (osd_seq->oos_root != NULL) + RETURN(0); + + LASSERT(map); + LASSERT(map->om_root); + + osd_seq_name(dir_name, sizeof(dir_name), osd_seq->oos_seq); + + seq_dir = simple_mkdir(map->om_root, osd->od_mnt, dir_name, 0755, 1); + if (IS_ERR(seq_dir)) + GOTO(out_err, rc = PTR_ERR(seq_dir)); + else if (seq_dir->d_inode == NULL) + GOTO(out_put, rc = -EFAULT); + + inode = seq_dir->d_inode; + osd_seq->oos_root = seq_dir; + + /* 'What the @fid is' is not imporatant, because the object + * has no OI mapping, and only is visible inside the OSD.*/ + lu_igif_build(fid, inode->i_ino, inode->i_generation); + rc = osd_ea_fid_set(info, inode, fid, + LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0); + if (rc != 0) + GOTO(out_put, rc); + + LASSERT(osd_seq->oos_dirs == NULL); + OBD_ALLOC(osd_seq->oos_dirs, + sizeof(seq_dir) * osd_seq->oos_subdir_count); + if (osd_seq->oos_dirs == NULL) + GOTO(out_put, rc = -ENOMEM); + + for (i = 0; i < osd_seq->oos_subdir_count; i++) { + struct dentry *dir; + + snprintf(dir_name, sizeof(dir_name), "d%u", i); + dir = simple_mkdir(osd_seq->oos_root, osd->od_mnt, dir_name, + 0700, 1); + if (IS_ERR(dir)) { + GOTO(out_free, rc = PTR_ERR(dir)); + } else if (dir->d_inode == NULL) { + dput(dir); + GOTO(out_free, rc = -EFAULT); + } + + inode = dir->d_inode; + osd_seq->oos_dirs[i] = dir; + + /* 'What the @fid is' is not imporatant, because the object + * has no OI mapping, and only is visible inside the OSD.*/ + lu_igif_build(fid, inode->i_ino, inode->i_generation); + rc = osd_ea_fid_set(info, inode, fid, + LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0); + if (rc != 0) + GOTO(out_free, rc); + } + + if (rc != 0) { +out_free: + for (i = 0; i < osd_seq->oos_subdir_count; i++) { + if (osd_seq->oos_dirs[i] != NULL) + dput(osd_seq->oos_dirs[i]); + } + OBD_FREE(osd_seq->oos_dirs, + sizeof(seq_dir) * osd_seq->oos_subdir_count); +out_put: + dput(seq_dir); + osd_seq->oos_root = NULL; + } +out_err: + RETURN(rc); +} + +static struct osd_obj_seq *osd_seq_load(struct osd_thread_info *info, + struct osd_device *osd, u64 seq) +{ + struct osd_obj_map *map; + struct osd_obj_seq *osd_seq; + int rc = 0; + ENTRY; + + map = osd->od_ost_map; + LASSERT(map); + LASSERT(map->om_root); + + osd_seq = osd_seq_find(map, seq); + if (likely(osd_seq != NULL)) + RETURN(osd_seq); + + /* Serializing init process */ + mutex_lock(&map->om_dir_init_mutex); + + /* Check whether the seq has been added */ + read_lock(&map->om_seq_list_lock); + osd_seq = osd_seq_find_locked(map, seq); + if (osd_seq != NULL) { + read_unlock(&map->om_seq_list_lock); + GOTO(cleanup, rc = 0); + } + read_unlock(&map->om_seq_list_lock); + + OBD_ALLOC_PTR(osd_seq); + if (osd_seq == NULL) + GOTO(cleanup, rc = -ENOMEM); + + INIT_LIST_HEAD(&osd_seq->oos_seq_list); + osd_seq->oos_seq = seq; + /* Init subdir count to be 32, but each seq can have + * different subdir count */ + osd_seq->oos_subdir_count = map->om_subdir_count; + rc = osd_seq_load_locked(info, osd, osd_seq); + if (rc != 0) + GOTO(cleanup, rc); + + write_lock(&map->om_seq_list_lock); + list_add(&osd_seq->oos_seq_list, &map->om_seq_list); + write_unlock(&map->om_seq_list_lock); cleanup: - RETURN(rc); + mutex_unlock(&map->om_dir_init_mutex); + if (rc != 0) { + if (osd_seq != NULL) + OBD_FREE_PTR(osd_seq); + RETURN(ERR_PTR(rc)); + } + + RETURN(osd_seq); } -int osd_compat_objid_insert(struct osd_thread_info *info, - struct osd_device *osd, - const struct lu_fid *fid, - const struct osd_inode_id *id, - struct thandle *th) +int osd_obj_map_lookup(struct osd_thread_info *info, struct osd_device *dev, + const struct lu_fid *fid, struct osd_inode_id *id) { - struct osd_compat_objid *map; - struct dentry *d; - struct ost_id *ostid = &info->oti_ostid; - int dirn, rc = 0; - char name[32]; + struct osd_obj_map *map; + struct osd_obj_seq *osd_seq; + struct dentry *d_seq; + struct dentry *child; + struct ost_id *ostid = &info->oti_ostid; + int dirn; + char name[32]; + struct ldiskfs_dir_entry_2 *de; + struct buffer_head *bh; + struct inode *dir; + struct inode *inode; ENTRY; - map = osd->od_ost_map; + /* on the very first lookup we find and open directories */ + + map = dev->od_ost_map; LASSERT(map); - LASSERT(map->root); - LASSERT(map->subdir_count > 0); - LASSERT(map->groups[ostid->oi_seq].groot); + LASSERT(map->om_root); - /* map fid to group:objid */ - fid_ostid_pack(fid, ostid); - dirn = ostid->oi_id & (map->subdir_count - 1); - d = map->groups[ostid->oi_seq].dirs[dirn]; - LASSERT(d); + fid_to_ostid(fid, ostid); + osd_seq = osd_seq_load(info, dev, ostid_seq(ostid)); + if (IS_ERR(osd_seq)) + RETURN(PTR_ERR(osd_seq)); - sprintf(name, "%llu", ostid->oi_id); - rc = osd_compat_add_entry(info, osd, d, name, id, th); + dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1); + d_seq = osd_seq->oos_dirs[dirn]; + LASSERT(d_seq); - RETURN(rc); + osd_oid_name(name, sizeof(name), fid, ostid_id(ostid)); + + child = &info->oti_child_dentry; + child->d_parent = d_seq; + child->d_name.hash = 0; + child->d_name.name = name; + /* XXX: we can use rc from sprintf() instead of strlen() */ + child->d_name.len = strlen(name); + + dir = d_seq->d_inode; + mutex_lock(&dir->i_mutex); + bh = osd_ldiskfs_find_entry(dir, &child->d_name, &de, NULL, NULL); + mutex_unlock(&dir->i_mutex); + + if (bh == NULL) + RETURN(-ENOENT); + + osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN); + brelse(bh); + + inode = osd_iget(info, dev, id); + if (IS_ERR(inode)) { + int rc = PTR_ERR(inode); + + RETURN(rc == -ENOENT ? -ESTALE : rc); + } + + iput(inode); + RETURN(0); } -int osd_compat_objid_delete(struct osd_thread_info *info, - struct osd_device *osd, - const struct lu_fid *fid, struct thandle *th) +int osd_obj_map_insert(struct osd_thread_info *info, + struct osd_device *osd, + const struct lu_fid *fid, + const struct osd_inode_id *id, + handle_t *th) { - struct osd_compat_objid *map; - struct dentry *d; - struct ost_id *ostid = &info->oti_ostid; - int dirn, rc = 0; - char name[32]; + struct osd_obj_map *map; + struct osd_obj_seq *osd_seq; + struct dentry *d; + struct ost_id *ostid = &info->oti_ostid; + u64 oid; + int dirn, rc = 0; + char name[32]; + ENTRY; + + map = osd->od_ost_map; + LASSERT(map); + + /* map fid to seq:objid */ + fid_to_ostid(fid, ostid); + + oid = ostid_id(ostid); + osd_seq = osd_seq_load(info, osd, ostid_seq(ostid)); + if (IS_ERR(osd_seq)) + RETURN(PTR_ERR(osd_seq)); + + dirn = oid & (osd_seq->oos_subdir_count - 1); + d = osd_seq->oos_dirs[dirn]; + LASSERT(d); + + osd_oid_name(name, sizeof(name), fid, oid); + +again: + rc = osd_obj_add_entry(info, osd, d, name, id, th); + if (rc == -EEXIST) { + rc = osd_obj_update_entry(info, osd, d, name, fid, id, th); + if (unlikely(rc == -ENOENT)) + goto again; + + if (unlikely(rc == 1)) + RETURN(0); + } + + RETURN(rc); +} + +int osd_obj_map_delete(struct osd_thread_info *info, struct osd_device *osd, + const struct lu_fid *fid, handle_t *th) +{ + struct osd_obj_map *map; + struct osd_obj_seq *osd_seq; + struct dentry *d; + struct ost_id *ostid = &info->oti_ostid; + int dirn, rc = 0; + char name[32]; ENTRY; map = osd->od_ost_map; LASSERT(map); - LASSERT(map->root); - LASSERT(map->subdir_count > 0); - LASSERT(map->groups[ostid->oi_seq].groot); - /* map fid to group:objid */ - fid_ostid_pack(fid, ostid); - dirn = ostid->oi_id & (map->subdir_count - 1); - d = map->groups[ostid->oi_seq].dirs[dirn]; - LASSERT(d); + /* map fid to seq:objid */ + fid_to_ostid(fid, ostid); + + osd_seq = osd_seq_load(info, osd, ostid_seq(ostid)); + if (IS_ERR(osd_seq)) + GOTO(cleanup, rc = PTR_ERR(osd_seq)); - sprintf(name, "%llu", ostid->oi_id); - rc = osd_compat_del_entry(info, osd, d, name, th); + dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1); + d = osd_seq->oos_dirs[dirn]; + LASSERT(d); + osd_oid_name(name, sizeof(name), fid, ostid_id(ostid)); + rc = osd_obj_del_entry(info, osd, d, name, th); +cleanup: RETURN(rc); } -struct named_oid { - unsigned long oid; - char *name; -}; - -static const struct named_oid oids[] = { - { FLD_INDEX_OID, "" /* "fld" */ }, - { FID_SEQ_CTL_OID, "" /* "seq_ctl" */ }, - { FID_SEQ_SRV_OID, "" /* "seq_srv" */ }, - { MDD_ROOT_INDEX_OID, "" /* "ROOT" */ }, - { MDD_ORPHAN_OID, "" /* "PENDING" */ }, - { MDD_LOV_OBJ_OID, "" /* LOV_OBJID */ }, - { MDD_CAPA_KEYS_OID, "" /* CAPA_KEYS */ }, - { MDT_LAST_RECV_OID, "" /* LAST_RCVD */ }, - { OFD_LAST_RECV_OID, "" /* LAST_RCVD */ }, - { OFD_LAST_GROUP_OID, "" /* "LAST_GROUP" */ }, - { LLOG_CATALOGS_OID, "" /* "CATALOGS" */ }, - { MGS_CONFIGS_OID, "" /* MOUNT_CONFIGS_DIR */ }, - { OFD_HEALTH_CHECK_OID, "" /* HEALTH_CHECK */ }, - { 0, NULL } -}; - -static char *oid2name(const unsigned long oid) +int osd_obj_map_update(struct osd_thread_info *info, + struct osd_device *osd, + const struct lu_fid *fid, + const struct osd_inode_id *id, + handle_t *th) { - int i = 0; - - while (oids[i].oid) { - if (oids[i].oid == oid) - return oids[i].name; - i++; - } - return NULL; + struct osd_obj_seq *osd_seq; + struct dentry *d; + struct ost_id *ostid = &info->oti_ostid; + int dirn, rc = 0; + char name[32]; + ENTRY; + + fid_to_ostid(fid, ostid); + osd_seq = osd_seq_load(info, osd, ostid_seq(ostid)); + if (IS_ERR(osd_seq)) + RETURN(PTR_ERR(osd_seq)); + + dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1); + d = osd_seq->oos_dirs[dirn]; + LASSERT(d); + + osd_oid_name(name, sizeof(name), fid, ostid_id(ostid)); + rc = osd_obj_update_entry(info, osd, d, name, fid, id, th); + + RETURN(rc); } -int osd_compat_spec_insert(struct osd_thread_info *info, - struct osd_device *osd, const struct lu_fid *fid, - const struct osd_inode_id *id, struct thandle *th) +int osd_obj_map_recover(struct osd_thread_info *info, + struct osd_device *osd, + struct inode *src_parent, + struct dentry *src_child, + const struct lu_fid *fid) { - struct osd_compat_objid *map = osd->od_ost_map; - struct dentry *root = osd_sb(osd)->s_root; - char *name; - int rc = 0; - int seq; - ENTRY; - - if (fid_oid(fid) >= OFD_GROUP0_LAST_OID && - fid_oid(fid) < OFD_GROUP4K_LAST_OID) { - /* on creation of LAST_ID we create O/ hierarchy */ - LASSERT(map); - seq = fid_oid(fid) - OFD_GROUP0_LAST_OID; - LASSERT(seq < MAX_OBJID_GROUP); - LASSERT(map->groups[seq].groot); - } else { - name = oid2name(fid_oid(fid)); - if (name == NULL) - CWARN("UNKNOWN COMPAT FID "DFID"\n", PFID(fid)); - else if (name[0]) - rc = osd_compat_add_entry(info, osd, root, name, id, - th); - } - - RETURN(rc); + struct osd_obj_seq *osd_seq; + struct dentry *tgt_parent; + struct dentry *tgt_child = &info->oti_child_dentry; + struct inode *dir; + struct inode *inode = src_child->d_inode; + struct ost_id *ostid = &info->oti_ostid; + handle_t *jh; + struct ldiskfs_dir_entry_2 *de; + struct buffer_head *bh; + char name[32]; + int dirn; + int rc = 0; + ENTRY; + + if (fid_is_last_id(fid)) { + osd_seq = osd_seq_load(info, osd, fid_seq(fid)); + if (IS_ERR(osd_seq)) + RETURN(PTR_ERR(osd_seq)); + + tgt_parent = osd_seq->oos_root; + tgt_child->d_name.name = "LAST_ID"; + tgt_child->d_name.len = strlen("LAST_ID"); + } else { + fid_to_ostid(fid, ostid); + osd_seq = osd_seq_load(info, osd, ostid_seq(ostid)); + if (IS_ERR(osd_seq)) + RETURN(PTR_ERR(osd_seq)); + + dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1); + tgt_parent = osd_seq->oos_dirs[dirn]; + osd_oid_name(name, sizeof(name), fid, ostid_id(ostid)); + tgt_child->d_name.name = name; + tgt_child->d_name.len = strlen(name); + } + LASSERT(tgt_parent != NULL); + + dir = tgt_parent->d_inode; + tgt_child->d_name.hash = 0; + tgt_child->d_parent = tgt_parent; + tgt_child->d_inode = inode; + + /* The non-initialized src_child may be destroyed. */ + jh = osd_journal_start_sb(osd_sb(osd), LDISKFS_HT_MISC, + osd_dto_credits_noquota[DTO_INDEX_DELETE] + + osd_dto_credits_noquota[DTO_INDEX_INSERT] + + osd_dto_credits_noquota[DTO_OBJECT_DELETE]); + if (IS_ERR(jh)) + RETURN(PTR_ERR(jh)); + + ll_vfs_dq_init(src_parent); + ll_vfs_dq_init(dir); + + mutex_lock(&src_parent->i_mutex); + mutex_lock(&dir->i_mutex); + bh = osd_ldiskfs_find_entry(dir, &tgt_child->d_name, &de, NULL, NULL); + if (bh != NULL) { + /* XXX: If some other object occupied the same slot. And If such + * inode is zero-sized and with SUID+SGID, then means it is + * a new created one. Maybe we can remove it and insert the + * original one back to the /O//d. But there are + * something to be considered: + * + * 1) The OST-object under /lost+found has crashed LMA. + * So it should not conflict with the current one. + * + * 2) There are race conditions that: someone may just want + * to modify the current one. Even if the OI scrub takes + * the object lock when remove the current one, it still + * cause the modification to be lost becasue the target + * has been removed when the RPC service thread waiting + * for the lock. + * + * So keep it there before we have suitable solution. */ + brelse(bh); + mutex_unlock(&dir->i_mutex); + mutex_unlock(&src_parent->i_mutex); + ldiskfs_journal_stop(jh); + + rc = -EEXIST; + /* If the src object has never been modified, then remove it. */ + if (inode->i_size == 0 && inode->i_mode & S_ISUID && + inode->i_mode & S_ISGID) { + rc = ll_vfs_unlink(src_parent, src_child); + if (unlikely(rc == -ENOENT)) + rc = 0; + } + RETURN(rc); + } + + bh = osd_ldiskfs_find_entry(src_parent, &src_child->d_name, &de, + NULL, NULL); + if (unlikely(bh == NULL)) + GOTO(unlock, rc = -ENOENT); + + rc = ldiskfs_delete_entry(jh, src_parent, de, bh); + brelse(bh); + if (rc != 0) + GOTO(unlock, rc); + + rc = osd_ldiskfs_add_entry(jh, tgt_child, inode, NULL); + + GOTO(unlock, rc); + +unlock: + mutex_unlock(&dir->i_mutex); + mutex_unlock(&src_parent->i_mutex); + ldiskfs_journal_stop(jh); + return rc; } -int osd_compat_spec_lookup(struct osd_thread_info *info, - struct osd_device *osd, const struct lu_fid *fid, - struct osd_inode_id *id) +static struct dentry * +osd_object_spec_find(struct osd_thread_info *info, struct osd_device *osd, + const struct lu_fid *fid, char **name) { - struct dentry *dentry; - char *name; - int rc = -ERESTART; - - ENTRY; + struct dentry *root = ERR_PTR(-ENOENT); + + if (fid_is_last_id(fid)) { + struct osd_obj_seq *osd_seq; + + /* on creation of LAST_ID we create O/ hierarchy */ + osd_seq = osd_seq_load(info, osd, fid_seq(fid)); + if (IS_ERR(osd_seq)) + RETURN((struct dentry *)osd_seq); + + *name = "LAST_ID"; + root = osd_seq->oos_root; + } else { + *name = osd_lf_fid2name(fid); + if (*name == NULL) + CWARN("UNKNOWN COMPAT FID "DFID"\n", PFID(fid)); + else if ((*name)[0]) + root = osd_sb(osd)->s_root; + } + + return root; +} - name = oid2name(fid_oid(fid)); - if (name == NULL || strlen(name) == 0) - return -ERESTART; - - dentry = ll_lookup_one_len(name, osd_sb(osd)->s_root, strlen(name)); - if (!IS_ERR(dentry)) { - if (dentry->d_inode) { - if (is_bad_inode(dentry->d_inode)) { - rc = -EIO; - } else { - id->oii_ino = dentry->d_inode->i_ino; - id->oii_gen = dentry->d_inode->i_generation; - rc = 0; - } - } - dput(dentry); - } +int osd_obj_spec_update(struct osd_thread_info *info, struct osd_device *osd, + const struct lu_fid *fid, const struct osd_inode_id *id, + handle_t *th) +{ + struct dentry *root; + char *name = NULL; + int rc; + ENTRY; + + root = osd_object_spec_find(info, osd, fid, &name); + if (!IS_ERR(root)) { + rc = osd_obj_update_entry(info, osd, root, name, fid, id, th); + } else { + rc = PTR_ERR(root); + if (rc == -ENOENT) + rc = 1; + } + + RETURN(rc); +} - RETURN(rc); +int osd_obj_spec_insert(struct osd_thread_info *info, struct osd_device *osd, + const struct lu_fid *fid, const struct osd_inode_id *id, + handle_t *th) +{ + struct dentry *root; + char *name = NULL; + int rc; + ENTRY; + + root = osd_object_spec_find(info, osd, fid, &name); + if (!IS_ERR(root)) { + rc = osd_obj_add_entry(info, osd, root, name, id, th); + } else { + rc = PTR_ERR(root); + if (rc == -ENOENT) + rc = 0; + } + + RETURN(rc); } +int osd_obj_spec_lookup(struct osd_thread_info *info, struct osd_device *osd, + const struct lu_fid *fid, struct osd_inode_id *id) +{ + struct dentry *root; + struct dentry *dentry; + struct inode *inode; + char *name = NULL; + int rc = -ENOENT; + ENTRY; + + if (fid_is_last_id(fid)) { + struct osd_obj_seq *osd_seq; + + osd_seq = osd_seq_load(info, osd, fid_seq(fid)); + if (IS_ERR(osd_seq)) + RETURN(PTR_ERR(osd_seq)); + root = osd_seq->oos_root; + name = "LAST_ID"; + } else { + root = osd_sb(osd)->s_root; + name = osd_lf_fid2name(fid); + if (name == NULL || strlen(name) == 0) + RETURN(-ENOENT); + } + + dentry = ll_lookup_one_len(name, root, strlen(name)); + if (!IS_ERR(dentry)) { + inode = dentry->d_inode; + if (inode) { + if (is_bad_inode(inode)) { + rc = -EIO; + } else { + osd_id_gen(id, inode->i_ino, + inode->i_generation); + rc = 0; + } + } + /* if dentry is accessible after osd_compat_spec_insert it + * will still contain NULL inode, so don't keep it in cache */ + d_invalidate(dentry); + dput(dentry); + } + + RETURN(rc); +}