*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* 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, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/osd/osd_compat.c
*
- * on-disk compatibility stuff for OST
+ * on-disk structure for managing /O
*
* Author: Alex Zhuravlev <bzzz@whamcloud.com>
*/
-/* LUSTRE_VERSION_CODE */
-#include <lustre_ver.h>
/* prerequisite for linux/xattr.h */
#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"
#include "osd_oi.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];
-};
-
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;
-}
-
-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);
- }
-
- 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 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->umask = current_umask();
+ newctxt->dt = NULL;
+
+ push_ctxt(save, newctxt);
}
-int osd_last_rcvd_subdir_count(struct osd_device *osd)
+struct dentry *osd_lookup_one_len_common(struct osd_device *dev,
+ const char *name,
+ struct dentry *base, int len,
+ enum oi_check_flags flags)
+{
+ struct dentry *dchild;
+
+ /*
+ * We can't use inode_is_locked() directly since we can't know
+ * if the current thread context took the lock earlier or if
+ * another thread context took the lock. OI_LOCKED tells us
+ * if the current thread context has already taken the lock.
+ */
+ if (!(flags & OI_LOCKED)) {
+ /* If another thread took this lock already we will
+ * just have to wait until the other thread is done.
+ */
+ inode_lock(base->d_inode);
+ dchild = lookup_one_len(name, base, len);
+ inode_unlock(base->d_inode);
+ } else {
+ /* This thread context already has taken the lock.
+ * Other threads will have to wait until we are done.
+ */
+ dchild = lookup_one_len(name, base, len);
+ }
+ if (IS_ERR(dchild))
+ return dchild;
+
+ if (dchild->d_inode && unlikely(is_bad_inode(dchild->d_inode))) {
+ CERROR("%s: bad inode returned %lu/%u: rc = -ENOENT\n",
+ osd_name(dev), dchild->d_inode->i_ino,
+ dchild->d_inode->i_generation);
+ dput(dchild);
+ dchild = ERR_PTR(-ENOENT);
+ }
+
+ return dchild;
+}
+
+/**
+ * osd_lookup_one_len_unlocked
+ *
+ * @dev: obd device we are searching
+ * @name: pathname component to lookup
+ * @base: base directory to lookup from
+ * @len: maximum length @len should be interpreted to
+ *
+ * Unlike osd_lookup_one_len, this should be called without the parent
+ * i_mutex held, and will take the i_mutex itself.
+ */
+struct dentry *osd_lookup_one_len_unlocked(struct osd_device *dev,
+ const char *name,
+ struct dentry *base, int len)
+{
+ return osd_lookup_one_len_common(dev, name, base, len, ~OI_LOCKED);
+}
+
+/**
+ * osd_lookup_one_len - lookup single pathname component
+ *
+ * @dev: obd device we are searching
+ * @name: pathname component to lookup
+ * @base: base directory to lookup from
+ * @len: maximum length @len should be interpreted to
+ *
+ * The caller must hold inode lock
+ */
+struct dentry *osd_lookup_one_len(struct osd_device *dev, const char *name,
+ struct dentry *base, int len)
{
- struct lr_server_data lsd;
- struct dentry *dlast;
- loff_t off;
- int rc = 0;
- int count = FILTER_SUBDIR_COUNT;
+ return osd_lookup_one_len_common(dev, name, base, len, OI_LOCKED);
+}
+
+/* utility to make a directory */
+static struct dentry *
+simple_mkdir(const struct lu_env *env, struct osd_device *osd,
+ struct dentry *dir, const struct lu_fid *fid,
+ const char *name, __u32 compat, int mode, bool *created)
+{
+ struct osd_thread_info *info = osd_oti_get(env);
+ struct lu_fid *tfid = &info->oti_fid3;
+ struct inode *inode;
+ 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 = osd_lookup_one_len_unlocked(osd, name, dir, strlen(name));
+ if (IS_ERR(dchild))
+ RETURN(dchild);
+
+ inode = dchild->d_inode;
+ if (inode) {
+ struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
+ int old_mode = inode->i_mode;
+
+ if (created)
+ *created = false;
+
+ if (!S_ISDIR(old_mode)) {
+ CERROR("found %s (%lu/%u) is mode %o\n", name,
+ inode->i_ino, inode->i_generation, old_mode);
+ GOTO(out_err, err = -ENOTDIR);
+ }
+
+ if (unlikely(osd->od_dt_dev.dd_rdonly))
+ RETURN(dchild);
+
+ /* Fixup directory permissions if necessary */
+ if ((old_mode & S_IALLUGO) != (mode & S_IALLUGO)) {
+ CDEBUG(D_CONFIG,
+ "fixing permissions on %s from %o to %o\n",
+ name, old_mode, mode);
+ inode->i_mode = (mode & S_IALLUGO) |
+ (old_mode & ~S_IALLUGO);
+ mark_inode_dirty(inode);
+ }
+
+ err = osd_get_lma(info, inode, &info->oti_obj_dentry,
+ &info->oti_ost_attrs);
+ if (err == -ENODATA)
+ goto set_fid;
+
+ if (err)
+ GOTO(out_err, err);
+
+ if ((fid && !lu_fid_eq(fid, &lma->lma_self_fid)) ||
+ lma->lma_compat != compat)
+ goto set_fid;
+
+ RETURN(dchild);
+ }
+
+ err = vfs_mkdir(&init_user_ns, dir->d_inode, dchild, mode);
+ if (err)
+ GOTO(out_err, err);
+
+ inode = dchild->d_inode;
+ if (created)
+ *created = true;
+
+set_fid:
+ if (fid)
+ *tfid = *fid;
+ else
+ lu_igif_build(tfid, inode->i_ino, inode->i_generation);
+ err = osd_ea_fid_set(info, inode, tfid, compat, 0);
+ if (err)
+ GOTO(out_err, err);
- ENTRY;
+ RETURN(dchild);
- dlast = ll_lookup_one_len(LAST_RCVD, osd_sb(osd)->s_root,
- strlen(LAST_RCVD));
- if (IS_ERR(dlast))
- return PTR_ERR(dlast);
- else if (dlast->d_inode == NULL)
- goto out;
+out_err:
+ dput(dchild);
+ return ERR_PTR(err);
+}
+
+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 = OBJ_SUBDIR_COUNT;
- off = 0;
- rc = osd_ldiskfs_read(dlast->d_inode, &lsd, sizeof(lsd), &off);
- if (rc == sizeof(lsd)) {
- CDEBUG(D_INFO, "read last_rcvd header, uuid = %s, "
- "subdir count = %d\n", lsd.lsd_uuid,
- lsd.lsd_subdir_count);
+ ENTRY;
+
+ dlast = osd_lookup_one_len_unlocked(osd, LAST_RCVD, osd_sb(osd)->s_root,
+ strlen(LAST_RCVD));
+ if (IS_ERR(dlast))
+ return PTR_ERR(dlast);
+ else if (dlast->d_inode == NULL)
+ goto out;
+
+ off = 0;
+ rc = osd_ldiskfs_read(dlast->d_inode, &lsd, sizeof(lsd), &off);
+ if (rc == sizeof(lsd)) {
+ CDEBUG(D_INFO,
+ "read last_rcvd header, uuid = %s, subdir count = %d\n",
+ lsd.lsd_uuid, lsd.lsd_subdir_count);
if (le16_to_cpu(lsd.lsd_subdir_count) > 0)
count = le16_to_cpu(lsd.lsd_subdir_count);
} else if (rc != 0) {
return count;
}
-void osd_compat_fini(struct osd_device *dev)
+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;
+
+ 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);
+
+ lu_local_obj_fid(fid, REMOTE_PARENT_DIR_OID);
+ d = simple_mkdir(env, dev, parent, fid, REMOTE_PARENT_DIR,
+ LMAC_NOT_IN_OI, 0755, NULL);
+ if (IS_ERR(d))
+ GOTO(cleanup, rc = PTR_ERR(d));
+
+ omm->omm_remote_parent = d;
+
+ GOTO(cleanup, rc = 0);
+
+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_ost_attrs.loa_lma;
+ char *name = oti->oti_name;
+ struct osd_thread_info *info = osd_oti_get(env);
+ struct dentry *dentry;
+ struct dentry *parent;
+ int rc;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AGENTENT))
+ RETURN(0);
+
+ /*
+ * 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,
+ &oti->oti_ost_attrs);
+ if (rc)
+ 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)
+ 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));
+ inode_lock(parent->d_inode);
+ rc = osd_ldiskfs_add_entry(info, osd, oh->ot_handle, dentry,
+ obj->oo_inode, NULL);
+ if (!rc && S_ISDIR(obj->oo_inode->i_mode))
+ ldiskfs_inc_count(oh->ot_handle, parent->d_inode);
+ else if (unlikely(rc == -EEXIST))
+ rc = 0;
+ if (!rc)
+ lu_object_set_agent_entry(&obj->oo_dt.do_lu);
+ CDEBUG(D_INODE, "%s: create agent entry for %s: rc = %d\n",
+ osd_name(osd), name, rc);
+ mark_inode_dirty(parent->d_inode);
+ inode_unlock(parent->d_inode);
+ 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, bool destroy)
+{
+ 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_ost_attrs.loa_lma;
+ char *name = oti->oti_name;
+ struct dentry *dentry;
+ struct dentry *parent;
+ struct ldiskfs_dir_entry_2 *de;
+ struct buffer_head *bh;
+ int 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));
+ inode_lock(parent->d_inode);
+ bh = osd_ldiskfs_find_entry(parent->d_inode, &dentry->d_name, &de,
+ NULL, NULL);
+ if (IS_ERR(bh)) {
+ inode_unlock(parent->d_inode);
+ rc = PTR_ERR(bh);
+ if (unlikely(rc == -ENOENT))
+ rc = 0;
+ } else {
+ rc = ldiskfs_delete_entry(oh->ot_handle, parent->d_inode,
+ de, bh);
+ if (!rc && S_ISDIR(obj->oo_inode->i_mode))
+ ldiskfs_dec_count(oh->ot_handle, parent->d_inode);
+ mark_inode_dirty(parent->d_inode);
+ inode_unlock(parent->d_inode);
+ brelse(bh);
+ CDEBUG(D_INODE, "%s: remove agent entry for %s: rc = %d\n",
+ osd_name(osd), name, rc);
+ }
+
+ if (destroy || rc) {
+ if (!rc)
+ lu_object_clear_agent_entry(&obj->oo_dt.do_lu);
+
+ RETURN(rc);
+ }
- ENTRY;
+ rc = osd_get_lma(oti, obj->oo_inode, &oti->oti_obj_dentry,
+ &oti->oti_ost_attrs);
+ if (rc)
+ RETURN(rc);
- if (dev->od_ost_map == NULL)
- RETURN_EXIT;
+ /* 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);
+ if (!rc)
+ lu_object_clear_agent_entry(&obj->oo_dt.do_lu);
+ RETURN(rc);
+}
- for (i = 0; i < MAX_OBJID_GROUP; i++)
- osd_compat_seq_fini(dev, i);
+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;
- dput(dev->od_ost_map->root);
- OBD_FREE_PTR(dev->od_ost_map);
- dev->od_ost_map = NULL;
+ ENTRY;
+
+ if (unlikely(osd->od_is_ost))
+ RETURN(-ENOENT);
+
+ 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));
+ inode_lock(parent->d_inode);
+ bh = osd_ldiskfs_find_entry(parent->d_inode, &dentry->d_name, &de,
+ NULL, NULL);
+ if (IS_ERR(bh)) {
+ rc = PTR_ERR(bh);
+ } else {
+ struct inode *inode;
- EXIT;
+ osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN);
+ brelse(bh);
+ inode = osd_iget(oti, osd, id);
+ if (IS_ERR(inode)) {
+ rc = PTR_ERR(inode);
+ if (rc == -ESTALE)
+ rc = -ENOENT;
+ } else {
+ iput(inode);
+ rc = 0;
+ }
+ }
+ inode_unlock(parent->d_inode);
+ 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 *d;
+ int rc;
+ bool created = false;
ENTRY;
/* to get subdir count from last_rcvd */
rc = osd_last_rcvd_subdir_count(dev);
- if (rc < 0) {
- OBD_FREE_PTR(dev->od_ost_map);
+ if (rc < 0)
+ GOTO(cleanup_alloc, rc);
+
+ dev->od_ost_map->om_subdir_count = rc;
+ 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);
+
+ osd_push_ctxt(dev, &new, &save);
+ d = simple_mkdir(env, dev, osd_sb(dev)->s_root, NULL, "O",
+ LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0755, &created);
+ if (IS_ERR(d))
+ GOTO(cleanup_ctxt, rc = PTR_ERR(d));
+
+ if (created)
+ /* It is quite probably that the device is new formatted. */
+ dev->od_maybe_new = 1;
+
+ dev->od_ost_map->om_root = d;
+
+ pop_ctxt(&save, &new);
+ RETURN(0);
+
+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_seq *osd_seq)
+{
+ int j;
+
+ 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_PTR_ARRAY(osd_seq->oos_dirs,
+ osd_seq->oos_subdir_count);
+ }
+
+ if (osd_seq->oos_root)
+ dput(osd_seq->oos_root);
+
+ OBD_FREE_PTR(osd_seq);
+}
+
+static void osd_ost_fini(struct osd_device *osd)
+{
+ 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) {
+ list_del_init(&osd_seq->oos_seq_list);
+ write_unlock(&map->om_seq_list_lock);
+ osd_seq_free(osd_seq);
+ write_lock(&map->om_seq_list_lock);
+ }
+ 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;
+}
+
+static int osd_index_backup_dir_init(const struct lu_env *env,
+ struct osd_device *dev)
+{
+ struct lu_fid *fid = &osd_oti_get(env)->oti_fid;
+ struct lvfs_run_ctxt new;
+ struct lvfs_run_ctxt save;
+ struct dentry *dentry;
+ int rc = 0;
+
+ ENTRY;
+
+ lu_local_obj_fid(fid, INDEX_BACKUP_OID);
+ osd_push_ctxt(dev, &new, &save);
+ dentry = simple_mkdir(env, dev, osd_sb(dev)->s_root, fid,
+ INDEX_BACKUP_DIR, LMAC_NOT_IN_OI, 0755, NULL);
+ if (IS_ERR(dentry)) {
+ rc = PTR_ERR(dentry);
+ } else {
+ dev->od_index_backup_inode = igrab(dentry->d_inode);
+ dput(dentry);
+ }
+ pop_ctxt(&save, &new);
+
+ RETURN(rc);
+}
+
+static void osd_index_backup_dir_fini(struct osd_device *dev)
+{
+ iput(dev->od_index_backup_inode);
+ dev->od_index_backup_inode = NULL;
+}
+
+int osd_obj_map_init(const struct lu_env *env, struct osd_device *dev)
+{
+ int rc;
+ bool mdt_init = false;
+
+ ENTRY;
+
+ rc = osd_ost_init(env, dev);
+ if (rc)
RETURN(rc);
+
+ if (!dev->od_is_ost) {
+ rc = osd_mdt_init(env, dev);
+ if (rc) {
+ osd_ost_fini(dev);
+ RETURN(rc);
+ }
+
+ mdt_init = true;
}
- dev->od_ost_map->subdir_count = rc;
- rc = 0;
+ rc = osd_index_backup_dir_init(env, dev);
+ if (rc) {
+ osd_ost_fini(dev);
+ if (mdt_init)
+ osd_mdt_fini(dev);
+ }
- LASSERT(dev->od_fsops);
- osd_push_ctxt(dev, &new, &save);
+ RETURN(rc);
+}
+
+static struct osd_obj_seq *osd_seq_find_locked(struct osd_obj_map *map, u64 seq)
+{
+ struct osd_obj_seq *osd_seq;
- 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));
- }
+ list_for_each_entry(osd_seq, &map->om_seq_list, oos_seq_list) {
+ if (osd_seq->oos_seq == seq)
+ return osd_seq;
+ }
+ return NULL;
+}
- dev->od_ost_map->root = d;
+static struct osd_obj_seq *osd_seq_find(struct osd_obj_map *map, u64 seq)
+{
+ struct osd_obj_seq *osd_seq;
- /* 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;
- }
- }
+ 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;
+}
- RETURN(rc);
+void osd_obj_map_fini(struct osd_device *dev)
+{
+ osd_index_backup_dir_fini(dev);
+ osd_ost_fini(dev);
+ osd_mdt_fini(dev);
}
-int osd_compat_del_entry(struct osd_thread_info *info, struct osd_device *osd,
- struct dentry *dird, char *name, struct thandle *th)
+/**
+ * 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 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 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_ost_attrs.loa_lma;
+ 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);
+
+ dquot_initialize(parent);
+ inode_lock(parent);
+ bh = osd_ldiskfs_find_entry(parent, &child->d_name, &de, NULL, NULL);
+ if (IS_ERR(bh))
+ GOTO(out, rc = PTR_ERR(bh));
+
+ 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);
+ }
+
+ /*
+ * The EA inode should NOT be in OI, old OI scrub may added
+ * such OI mapping by wrong, replace it.
+ */
+ if (unlikely(osd_is_ea_inode(inode))) {
+ iput(inode);
+ goto update;
+ }
+
+ rc = osd_get_lma(info, inode, dentry, &info->oti_ost_attrs);
+ if (rc == -ENODATA) {
+ rc = osd_get_idif(info, inode, dentry, oi_fid);
+ if (rc > 0 || rc == -ENODATA) {
+ oi_fid = NULL;
+ rc = 0;
+ }
+ }
+ iput(inode);
- ENTRY;
+ if (rc != 0)
+ GOTO(out, rc);
+
+ /*
+ * 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 (oi_fid != NULL && 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);
+ }
- oh = container_of(th, struct osd_thandle, ot_super);
- LASSERT(oh->ot_handle != NULL);
- LASSERT(oh->ot_handle->h_transaction != NULL);
+ if (fid_is_idif(fid) && oi_fid != NULL && fid_is_idif(oi_fid)) {
+ __u32 idx1 = fid_idif_ost_idx(fid);
+ __u32 idx2 = fid_idif_ost_idx(oi_fid);
+ struct ost_id *ostid = &info->oti_ostid;
+ struct lu_fid *tfid = &info->oti_fid3;
+
+ LASSERTF(idx1 == 0 || idx1 == osd->od_index,
+ "invalid given FID "DFID", not match the "
+ "device index %u\n", PFID(fid), osd->od_index);
+
+ if (idx1 != idx2) {
+ if (idx1 == 0 && idx2 == osd->od_index) {
+ fid_to_ostid(fid, ostid);
+ ostid_to_fid(tfid, ostid, idx2);
+ if (lu_fid_eq(tfid, oi_fid)) {
+ CERROR("%s: the FID "DFID" is used by "
+ "two objects(2): %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);
+ }
+ } else if (idx2 == 0 && idx1 == osd->od_index) {
+ fid_to_ostid(oi_fid, ostid);
+ ostid_to_fid(tfid, ostid, idx1);
+ if (lu_fid_eq(tfid, fid)) {
+ CERROR("%s: the FID "DFID" is used by "
+ "two objects(2): %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 = dird;
- child->d_inode = NULL;
+out:
+ if (!IS_ERR(bh))
+ brelse(bh);
+ inode_unlock(parent);
+ return rc;
+}
+
+int osd_obj_del_entry(struct osd_thread_info *info, struct osd_device *osd,
+ struct dentry *dird, char *name, int namelen,
+ handle_t *th)
+{
+ struct ldiskfs_dir_entry_2 *de;
+ struct buffer_head *bh;
+ struct dentry *child;
+ struct inode *dir = dird->d_inode;
+ int rc;
- mutex_lock(&dir->i_mutex);
- rc = -ENOENT;
- bh = osd_ldiskfs_find_entry(dir, child, &de, NULL);
- if (bh) {
- rc = ldiskfs_delete_entry(oh->ot_handle, dir, de, bh);
+ 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 = namelen;
+ child->d_parent = dird;
+ child->d_inode = NULL;
+
+ dquot_initialize(dir);
+ inode_lock(dir);
+ bh = osd_ldiskfs_find_entry(dir, &child->d_name, &de, NULL, NULL);
+ if (IS_ERR(bh)) {
+ rc = PTR_ERR(bh);
+ } else {
+ rc = ldiskfs_delete_entry(th, dir, de, bh);
brelse(bh);
}
- mutex_unlock(&dir->i_mutex);
+ inode_unlock(dir);
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)
+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 osd_thandle *oh;
- struct dentry *child;
- struct inode *inode;
- int rc;
+ struct dentry *child;
+ struct inode *inode;
+ int rc;
+
+ ENTRY;
- ENTRY;
+ if (OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_NO_ENTRY))
+ RETURN(0);
- oh = container_of(th, struct osd_thandle, ot_super);
- LASSERT(oh->ot_handle != NULL);
- LASSERT(oh->ot_handle->h_transaction != NULL);
+ LASSERT(th != NULL);
+ LASSERT(th->h_transaction != NULL);
- inode = &info->oti_inode;
- inode->i_sb = osd_sb(osd);
+ inode = info->oti_inode;
+ if (unlikely(inode == NULL)) {
+ struct ldiskfs_inode_info *lii;
+
+ OBD_ALLOC_PTR(lii);
+ if (lii == NULL)
+ RETURN(-ENOMEM);
+ inode = info->oti_inode = &lii->vfs_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;
+ 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;
- mutex_lock(&dir->d_inode->i_mutex);
- rc = osd_ldiskfs_add_entry(oh->ot_handle, child, inode, NULL);
- mutex_unlock(&dir->d_inode->i_mutex);
+ if (OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_INVALID_ENTRY))
+ inode->i_ino++;
+
+ dquot_initialize(dir->d_inode);
+ inode_lock(dir->d_inode);
+ rc = osd_ldiskfs_add_entry(info, osd, th, child, inode, NULL);
+ inode_unlock(dir->d_inode);
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)
-{
- struct osd_compat_objid *map;
- struct dentry *d;
- struct dentry *d_seq;
- 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;
- mutex_lock(&dir->i_mutex);
- bh = osd_ldiskfs_find_entry(dir, d_seq, &de, NULL);
- mutex_unlock(&dir->i_mutex);
-
- if (bh == NULL)
- RETURN(-ENOENT);
+/**
+ * Use %llu for legacy OST sequences, but use %llx 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)
+{
+ snprintf(seq_name, name_size,
+ (fid_seq_is_rsvd(seq) ||
+ fid_seq_is_mdt0(seq)) ? "%llu" : "%llx",
+ fid_seq_is_idif(seq) ? 0 : seq);
+}
+
+/* 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;
+ 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(info->oti_env, osd, map->om_root, NULL, dir_name,
+ LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0755, NULL);
+ 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);
+
+ osd_seq->oos_root = seq_dir;
+
+ LASSERT(osd_seq->oos_dirs == NULL);
+ OBD_ALLOC_PTR_ARRAY(osd_seq->oos_dirs, 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(info->oti_env, osd, osd_seq->oos_root, NULL,
+ dir_name, LMAC_NOT_IN_OI | LMAC_FID_ON_OST,
+ 0700, NULL);
+ if (IS_ERR(dir)) {
+ GOTO(out_free, rc = PTR_ERR(dir));
+ } else if (dir->d_inode == NULL) {
+ dput(dir);
+ GOTO(out_free, rc = -EFAULT);
+ }
+
+ osd_seq->oos_dirs[i] = dir;
+ }
+
+ 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_PTR_ARRAY(osd_seq->oos_dirs,
+ osd_seq->oos_subdir_count);
+out_put:
+ dput(seq_dir);
+ osd_seq->oos_root = NULL;
+ }
+out_err:
+ RETURN(rc);
+}
+
+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:
+ 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_obj_map_lookup(struct osd_thread_info *info, struct osd_device *dev,
+ const struct lu_fid *fid, struct osd_inode_id *id)
+{
+ 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->om_root);
+
+ 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;
+ inode_lock(dir);
+ bh = osd_ldiskfs_find_entry(dir, &child->d_name, &de, NULL, NULL);
+ inode_unlock(dir);
+
+ if (IS_ERR(bh))
+ RETURN(PTR_ERR(bh));
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));
+ if (IS_ERR(inode)) {
+ int rc = PTR_ERR(inode);
+
+ RETURN(rc == -ENOENT ? -ESTALE : rc);
+ }
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)
-{
- struct osd_compat_objid *map;
- 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);
-
- sprintf(name, "%llu", ostid->oi_id);
- rc = osd_compat_add_entry(info, osd, d, name, id, th);
-
- RETURN(rc);
-}
-
-int osd_compat_objid_delete(struct osd_thread_info *info,
- struct osd_device *osd,
- const struct lu_fid *fid, struct thandle *th)
-{
- struct osd_compat_objid *map;
- 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);
-
- sprintf(name, "%llu", ostid->oi_id);
- rc = osd_compat_del_entry(info, osd, d, name, th);
-
- 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 },
- { LFSCK_BOOKMARK_OID, "" /* "lfsck_bookmark" */ },
- { OTABLE_IT_OID, "" /* "otable iterator" */},
- { 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 i = 0;
-
- while (oids[i].oid) {
- if (oids[i].oid == oid)
- return oids[i].name;
- i++;
- }
- return NULL;
-}
-
-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)
-{
- 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/<group> hierarchy */
- LASSERT(map);
- seq = fid_oid(fid) - OFD_GROUP0_LAST_OID;
- LASSERT(seq < MAX_OBJID_GROUP);
- LASSERT(map->groups[seq].groot);
- rc = osd_compat_add_entry(info, osd, map->groups[seq].groot,
- "LAST_ID", id, th);
- } 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);
-}
-
-int osd_compat_spec_lookup(struct osd_thread_info *info,
- struct osd_device *osd, const struct lu_fid *fid,
- struct osd_inode_id *id)
-{
- struct dentry *root;
+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_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);
+
+ /* 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));
+
+ 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, strlen(name), th);
+cleanup:
+ RETURN(rc);
+}
+
+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)
+{
+ 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_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_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));
+
+ dquot_initialize(src_parent);
+ dquot_initialize(dir);
+
+ inode_lock(dir);
+ bh = osd_ldiskfs_find_entry(dir, &tgt_child->d_name, &de, NULL, NULL);
+ if (!IS_ERR(bh)) {
+ /*
+ * 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);
+ inode_unlock(dir);
+ 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(&init_user_ns, src_parent, src_child);
+ if (unlikely(rc == -ENOENT))
+ rc = 0;
+ }
+ if (rc)
+ RETURN(rc);
+ }
+
+ bh = osd_ldiskfs_find_entry(src_parent, &src_child->d_name, &de,
+ NULL, NULL);
+ if (unlikely(IS_ERR(bh)))
+ GOTO(unlock, rc = PTR_ERR(bh));
+
+ rc = ldiskfs_delete_entry(jh, src_parent, de, bh);
+ brelse(bh);
+ if (rc != 0)
+ GOTO(unlock, rc);
+
+ rc = osd_ldiskfs_add_entry(info, osd, jh, tgt_child, inode, NULL);
+
+ GOTO(unlock, rc);
+
+unlock:
+ inode_unlock(dir);
+ ldiskfs_journal_stop(jh);
+ return rc;
+}
+
+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 *root = ERR_PTR(-ENOENT);
+
+ if (fid_is_last_id(fid)) {
+ struct osd_obj_seq *osd_seq;
+
+ /* 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);
+
+ *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 = 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);
+}
+
+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,
+ enum oi_check_flags flags)
+{
+ struct dentry *root;
struct dentry *dentry;
- struct inode *inode;
- char *name;
- int rc = -ENOENT;
+ struct inode *inode;
+ char *name = NULL;
+ int rc = -ENOENT;
+
ENTRY;
- if (fid_oid(fid) >= OFD_GROUP0_LAST_OID &&
- fid_oid(fid) < OFD_GROUP4K_LAST_OID) {
- struct osd_compat_objid *map = osd->od_ost_map;
- int seq;
+ if (fid_is_last_id(fid)) {
+ struct osd_obj_seq *osd_seq;
- LASSERT(map);
- seq = fid_oid(fid) - OFD_GROUP0_LAST_OID;
- LASSERT(seq < MAX_OBJID_GROUP);
- LASSERT(map->groups[seq].groot);
- root = map->groups[seq].groot;
+ 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 = oid2name(fid_oid(fid));
+ name = osd_lf_fid2name(fid);
if (name == NULL || strlen(name) == 0)
RETURN(-ENOENT);
}
- dentry = ll_lookup_one_len(name, root, strlen(name));
+ dentry = osd_lookup_one_len_common(osd, name, root, strlen(name),
+ flags);
if (!IS_ERR(dentry)) {
inode = dentry->d_inode;
if (inode) {
rc = 0;
}
}
- /* if dentry is accessible after osd_compat_spec_insert it
- * will still contain NULL inode, so don't keep it in cache */
+ /*
+ * 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);
}
+
+#ifndef HAVE_BIO_INTEGRITY_ENABLED
+bool bio_integrity_enabled(struct bio *bio)
+{
+ struct blk_integrity *bi = blk_get_integrity(bio_get_disk(bio));
+
+ if (bio_op(bio) != REQ_OP_READ && bio_op(bio) != REQ_OP_WRITE)
+ return false;
+
+ if (!bio_sectors(bio))
+ return false;
+
+ /* Already protected? */
+ if (bio_integrity(bio))
+ return false;
+
+ if (bi == NULL)
+ return false;
+
+ if (bio_data_dir(bio) == READ && bi->profile->verify_fn != NULL &&
+ (bi->flags & BLK_INTEGRITY_VERIFY))
+ return true;
+
+ if (bio_data_dir(bio) == WRITE && bi->profile->generate_fn != NULL &&
+ (bi->flags & BLK_INTEGRITY_GENERATE))
+ return true;
+
+ return false;
+}
+#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff