* 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, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* lustre/osd/osd_compat.c
*
- * on-disk compatibility stuff for OST
+ * on-disk structure for managing /O
*
* Author: Alex Zhuravlev <bzzz@whamcloud.com>
*/
#include <linux/types.h>
/* prerequisite for linux/xattr.h */
#include <linux/fs.h>
+/* XATTR_{REPLACE,CREATE} */
+#include <linux/xattr.h>
/*
* struct OBD_{ALLOC,FREE}*()
* OBD_FAIL_CHECK
*/
#include <obd_support.h>
-#include <lvfs.h>
#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/<seq> */
- struct dentry **dirs; /* O/<seq>/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();
+ 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);
+ push_ctxt(save, newctxt);
}
-void osd_compat_seq_fini(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 = 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;
-}
-
-int osd_compat_seq_init(struct osd_device *osd, int seq)
-{
- 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);
- }
+ struct dentry *dchild;
+ int err = 0;
+ ENTRY;
- LASSERT(grp->dirs == NULL);
- OBD_ALLOC(grp->dirs, sizeof(d) * map->subdir_count);
- if (grp->dirs == NULL) {
- dput(d);
- GOTO(out, rc = -ENOMEM);
- }
+ // 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);
+ }
- 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;
- }
+ err = vfs_mkdir(dir->d_inode, dchild, mode);
+ if (err)
+ GOTO(out_err, err);
- grp->dirs[i] = d;
- }
+ RETURN(dchild);
- if (rc)
- osd_compat_seq_fini(osd, seq);
-out:
- cfs_up(&grp->dir_init_sem);
- RETURN(rc);
+out_err:
+ dput(dchild);
+ dchild = ERR_PTR(err);
+out_up:
+ return dchild;
}
int osd_last_rcvd_subdir_count(struct osd_device *osd)
struct dentry *dlast;
loff_t off;
int rc = 0;
- int count = FILTER_SUBDIR_COUNT;
+ int count = OBJ_SUBDIR_COUNT;
ENTRY;
rc = -EFAULT;
dput(dlast);
return rc;
- } else {
- count = FILTER_SUBDIR_COUNT;
}
out:
dput(dlast);
LASSERT(count > 0);
+ return count;
+}
+
+static const char remote_parent_dir[] = "REMOTE_PARENT_DIR";
+static int osd_mdt_init(const struct lu_env *env, struct osd_device *dev)
+{
+ 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;
+
+ 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));
+
+ ldiskfs_set_inode_state(d->d_inode, LDISKFS_STATE_LUSTRE_NO_OI);
+ omm->omm_remote_parent = d;
+
+ /* 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);
+
+ GOTO(cleanup, rc);
+
+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;
}
-void osd_compat_fini(struct osd_device *dev)
+static void osd_mdt_fini(struct osd_device *osd)
{
- int i;
+ struct osd_mdobj_map *omm = osd->od_mdt_map;
- ENTRY;
+ if (omm == NULL)
+ return;
- if (dev->od_ost_map == NULL)
- RETURN_EXIT;
+ if (omm->omm_remote_parent)
+ dput(omm->omm_remote_parent);
- for (i = 0; i < MAX_OBJID_GROUP; i++)
- osd_compat_seq_fini(dev, i);
+ OBD_FREE_PTR(omm);
+ osd->od_ost_map = NULL;
+}
- dput(dev->od_ost_map->root);
- OBD_FREE_PTR(dev->od_ost_map);
- dev->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;
- EXIT;
+ 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);
}
/*
* 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;
-
+ 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);
RETURN(rc);
}
- dev->od_ost_map->subdir_count = rc;
+ dev->od_ost_map->om_subdir_count = rc;
rc = 0;
- LASSERT(dev->od_fsops);
+ CFS_INIT_LIST_HEAD(&dev->od_ost_map->om_seq_list);
+ rwlock_init(&dev->od_ost_map->om_seq_list_lock);
+ sema_init(&dev->od_ost_map->om_dir_init_sem, 1);
+
osd_push_ctxt(dev, &new, &save);
- d = simple_mkdir(rootd, dev->od_mnt, "O", 0755, 1);
- pop_ctxt(&save, &new, NULL);
+ d = ll_lookup_one_len("O", rootd, strlen("O"));
+ if (IS_ERR(d))
+ GOTO(cleanup, 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, rc = PTR_ERR(d));
+
+ /* It is quite probably that the device is new formatted. */
+ dev->od_maybe_new = 1;
+ }
+
+ inode = d->d_inode;
+ ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NO_OI);
+ 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);
+
+ GOTO(cleanup, rc);
+
+cleanup:
+ pop_ctxt(&save, &new);
if (IS_ERR(d)) {
OBD_FREE_PTR(dev->od_ost_map);
RETURN(PTR_ERR(d));
}
+ 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;
+ cfs_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;
- ENTRY;
+ if (map == NULL)
+ return;
- oh = container_of(th, struct osd_thandle, ot_super);
- LASSERT(oh->ot_handle != NULL);
- LASSERT(oh->ot_handle->h_transaction != NULL);
+ write_lock(&map->om_seq_list_lock);
+ cfs_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;
+}
+int osd_obj_map_init(const struct lu_env *env, struct osd_device *dev)
+{
+ int rc;
+ 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 = dird;
- child->d_inode = NULL;
+ /* prepare structures for OST */
+ rc = osd_ost_init(env, dev);
+ if (rc)
+ 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);
+ /* prepare structures for MDS */
+ rc = osd_mdt_init(env, dev);
RETURN(rc);
}
-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)
+struct osd_obj_seq *osd_seq_find_locked(struct osd_obj_map *map, obd_seq seq)
{
- struct osd_thandle *oh;
- struct dentry *child;
- struct inode *inode;
- int rc;
+ struct osd_obj_seq *osd_seq;
- ENTRY;
+ cfs_list_for_each_entry(osd_seq, &map->om_seq_list, oos_seq_list) {
+ if (osd_seq->oos_seq == seq)
+ return osd_seq;
+ }
+ return NULL;
+}
+
+struct osd_obj_seq *osd_seq_find(struct osd_obj_map *map, obd_seq seq)
+{
+ struct osd_obj_seq *osd_seq;
- oh = container_of(th, struct osd_thandle, ot_super);
- LASSERT(oh->ot_handle != NULL);
- LASSERT(oh->ot_handle->h_transaction != NULL);
+ 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;
+}
- inode = &info->oti_inode;
- inode->i_sb = osd_sb(osd);
- inode->i_ino = id->oii_ino;
- inode->i_generation = id->oii_gen;
+void osd_obj_map_fini(struct osd_device *dev)
+{
+ osd_ost_fini(dev);
+ osd_mdt_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 = dir;
- child->d_inode = inode;
+/**
+ * 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;
- LOCK_INODE_MUTEX(dir->d_inode);
- rc = osd_ldiskfs_add_entry(oh->ot_handle, child, inode, NULL);
- UNLOCK_INODE_MUTEX(dir->d_inode);
+ 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);
+ }
- RETURN(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_journal_dirty_metadata(th, bh);
+
+ GOTO(out, rc);
+
+out:
+ brelse(bh);
+ mutex_unlock(&parent->i_mutex);
+ return rc;
+}
+
+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);
+}
+
+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;
+ 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);
+}
+
+/**
+ * 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, obd_seq seq)
+{
+ snprintf(seq_name, name_size,
+ (fid_seq_is_rsvd(seq) ||
+ fid_seq_is_mdt0(seq)) ? LPU64 : LPX64i,
+ fid_seq_is_idif(seq) ? 0 : seq);
+}
+
+static inline void osd_oid_name(char *name, size_t name_size,
+ const struct lu_fid *fid, obd_id 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);
+}
+
+/* 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;
+ ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NO_OI);
+ 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;
+ ldiskfs_set_inode_state(inode, LDISKFS_STATE_LUSTRE_NO_OI);
+ 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, obd_seq 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 */
+ down(&map->om_dir_init_sem);
+
+ /* 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);
+
+ CFS_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);
+ cfs_list_add(&osd_seq->oos_seq_list, &map->om_seq_list);
+ write_unlock(&map->om_seq_list_lock);
+
+cleanup:
+ up(&map->om_dir_init_sem);
+ if (rc != 0) {
+ if (osd_seq != NULL)
+ OBD_FREE_PTR(osd_seq);
+ RETURN(ERR_PTR(rc));
+ }
+
+ RETURN(osd_seq);
}
-int osd_compat_objid_lookup(struct osd_thread_info *info,
- struct osd_device *dev, const struct lu_fid *fid,
- struct osd_inode_id *id)
+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 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;
+ 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;
/* on the very first lookup we find and open directories */
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);
- }
+ LASSERT(map->om_root);
-cleanup:
- RETURN(rc);
+ 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));
+
+ dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1);
+ d_seq = osd_seq->oos_dirs[dirn];
+ LASSERT(d_seq);
+
+ 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))
+ RETURN(PTR_ERR(inode));
+
+ iput(inode);
+ RETURN(0);
}
-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_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];
- ENTRY;
+ struct osd_obj_map *map;
+ struct osd_obj_seq *osd_seq;
+ struct dentry *d;
+ struct ost_id *ostid = &info->oti_ostid;
+ obd_id oid;
+ 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 = osd->od_ost_map;
+ LASSERT(map);
- /* 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);
- sprintf(name, "%llu", ostid->oi_id);
- rc = osd_compat_add_entry(info, osd, d, name, id, th);
+ oid = ostid_id(ostid);
+ osd_seq = osd_seq_load(info, osd, ostid_seq(ostid));
+ if (IS_ERR(osd_seq))
+ RETURN(PTR_ERR(osd_seq));
- RETURN(rc);
+ 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_compat_objid_delete(struct osd_thread_info *info,
- struct osd_device *osd,
- const struct lu_fid *fid, struct thandle *th)
+int osd_obj_map_delete(struct osd_thread_info *info, struct osd_device *osd,
+ const struct lu_fid *fid, 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;
+ 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);
- sprintf(name, "%llu", ostid->oi_id);
- rc = osd_compat_del_entry(info, osd, d, name, th);
+ osd_seq = osd_seq_load(info, osd, ostid_seq(ostid));
+ if (IS_ERR(osd_seq))
+ GOTO(cleanup, rc = 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_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;
+ struct osd_obj_seq *osd_seq;
+ struct dentry *d;
+ struct ost_id *ostid = &info->oti_ostid;
+ int dirn, rc = 0;
+ char name[32];
+ ENTRY;
- while (oids[i].oid) {
- if (oids[i].oid == oid)
- return oids[i].name;
- i++;
- }
- return NULL;
+ 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;
+ 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_oid(fid) >= OFD_GROUP0_LAST_OID &&
- fid_oid(fid) < OFD_GROUP4K_LAST_OID) {
- /* on creation of LAST_ID we create O/<group> 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);
- }
+ 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));
- RETURN(rc);
+ 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/<seq>/d<x>. 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 = 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;
+ struct dentry *root = ERR_PTR(-ENOENT);
- ENTRY;
+ if (fid_is_last_id(fid)) {
+ struct osd_obj_seq *osd_seq;
- 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);
- }
+ /* on creation of LAST_ID we create O/<seq> hierarchy */
+ osd_seq = osd_seq_load(info, osd, fid_seq(fid));
+ if (IS_ERR(osd_seq))
+ RETURN((struct dentry *)osd_seq);
- RETURN(rc);
+ *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;
}
+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;
+ 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);
+}
+
+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;
+ 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;
+ 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);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff