X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fosd-ldiskfs%2Fosd_quota.c;h=804f045ee5f1a164d1c4faa28a8b527989df35eb;hb=2a42554850e92ef1aa515269e7d2a4020403c12d;hp=e636c6d80334b1fa64f2568b36b0656caa26a612;hpb=57df6353ca590f32a32c0f0dc4a1d10a86a027ec;p=fs%2Flustre-release.git

diff --git a/lustre/osd-ldiskfs/osd_quota.c b/lustre/osd-ldiskfs/osd_quota.c
index e636c6d..804f045 100644
--- a/lustre/osd-ldiskfs/osd_quota.c
+++ b/lustre/osd-ldiskfs/osd_quota.c
@@ -28,7 +28,7 @@
  * Author: Niu    Yawei    <niu@whamcloud.com>
  */
 
-#include <lquota.h>
+#include <lustre_quota.h>
 #include "osd_internal.h"
 
 /**
@@ -102,7 +102,7 @@ static int osd_acct_index_lookup(const struct lu_env *env,
 	struct osd_thread_info	*info = osd_oti_get(env);
 	struct if_dqblk		*dqblk = &info->oti_dqblk;
 	struct super_block	*sb = osd_sb(osd_obj2dev(osd_dt_obj(dtobj)));
-	struct acct_rec		*rec = (struct acct_rec *)dtrec;
+	struct lquota_acct_rec	*rec = (struct lquota_acct_rec *)dtrec;
 	__u64			 id = *((__u64 *)dtkey);
 	int			 rc;
 
@@ -120,7 +120,7 @@ static int osd_acct_index_lookup(const struct lu_env *env,
 #define QUOTA_IT_READ_ERROR(it, rc)                                    \
 	CERROR("%s: Error while trying to read quota information, "    \
 	       "failed with %d\n",                                     \
-	       it->oiq_obj->oo_dt.do_lu.lo_dev->ld_obd->obd_name, rc); \
+	       osd_dev(it->oiq_obj->oo_dt.do_lu.lo_dev)->od_svname, rc); \
 
 /**
  * Initialize osd Iterator for given osd index object.
@@ -149,6 +149,7 @@ static struct dt_it *osd_it_acct_init(const struct lu_env *env,
 	memset(it, 0, sizeof(*it));
 	lu_object_get(lo);
 	it->oiq_obj = obj;
+	CFS_INIT_LIST_HEAD(&it->oiq_list);
 
 	/* LUSTRE_DQTREEOFF is the initial offset where the tree can be found */
 	it->oiq_blk[0] = LUSTRE_DQTREEOFF;
@@ -167,9 +168,15 @@ static struct dt_it *osd_it_acct_init(const struct lu_env *env,
 static void osd_it_acct_fini(const struct lu_env *env, struct dt_it *di)
 {
 	struct osd_it_quota *it = (struct osd_it_quota *)di;
-
+	struct osd_quota_leaf *leaf, *tmp;
 	ENTRY;
+
 	lu_object_put(env, &it->oiq_obj->oo_dt.do_lu);
+
+	cfs_list_for_each_entry_safe(leaf, tmp, &it->oiq_list, oql_link) {
+		cfs_list_del_init(&leaf->oql_link);
+		OBD_FREE_PTR(leaf);
+	}
 	EXIT;
 }
 
@@ -227,6 +234,19 @@ static void osd_it_acct_put(const struct lu_env *env, struct dt_it *di)
 	return;
 }
 
+static int osd_it_add_processed(struct osd_it_quota *it, int depth)
+{
+	struct osd_quota_leaf *leaf;
+
+	OBD_ALLOC_PTR(leaf);
+	if (leaf == NULL)
+		RETURN(-ENOMEM);
+	CFS_INIT_LIST_HEAD(&leaf->oql_link);
+	leaf->oql_blk = it->oiq_blk[depth];
+	cfs_list_add_tail(&leaf->oql_link, &it->oiq_list);
+	RETURN(0);
+}
+
 /**
  * Move on to the next valid entry.
  *
@@ -250,8 +270,8 @@ static int osd_it_acct_next(const struct lu_env *env, struct dt_it *di)
 	/* Let's first check if there are any remaining valid entry in the
 	 * current leaf block. Start with the next entry after the current one.
 	 */
-	depth = LUSTRE_DQTREEDEPTH - 1;
-	index = GETIDINDEX(it->oiq_id, depth);
+	depth = LUSTRE_DQTREEDEPTH;
+	index = it->oiq_index[depth];
 	if (++index < LUSTRE_DQSTRINBLK) {
 		/* Search for the next valid entry from current index */
 		rc = walk_block_dqentry(env, it->oiq_obj, type,
@@ -263,7 +283,15 @@ static int osd_it_acct_next(const struct lu_env *env, struct dt_it *di)
 			/* Found on entry, @it is already updated to the
 			 * new position in walk_block_dqentry(). */
 			RETURN(0);
+		} else {
+			rc = osd_it_add_processed(it, depth);
+			if (rc)
+				RETURN(rc);
 		}
+	} else {
+		rc = osd_it_add_processed(it, depth);
+		if (rc)
+			RETURN(rc);
 	}
 	rc = 1;
 
@@ -274,7 +302,7 @@ static int osd_it_acct_next(const struct lu_env *env, struct dt_it *di)
 	/* We keep searching as long as walk_tree_dqentry() returns +1
 	 * (= no valid entry found). */
 	for (; depth >= 0 && rc > 0; depth--) {
-		index = GETIDINDEX(it->oiq_id, depth);
+		index = it->oiq_index[depth];
 		if (++index > 0xff)
 			continue;
 		rc = walk_tree_dqentry(env, it->oiq_obj, type,
@@ -387,3 +415,673 @@ const struct dt_index_operations osd_acct_index_ops = {
 	}
 };
 
+static inline void osd_quota_swab(char *ptr, size_t size)
+{
+	int offset;
+
+	LASSERT((size & (sizeof(__u64) - 1)) == 0);
+
+	for (offset = 0; offset < size; offset += sizeof(__u64))
+	     __swab64s((__u64 *)(ptr + offset));
+}
+
+const struct dt_rec *osd_quota_pack(struct osd_object *obj,
+				    const struct dt_rec *rec,
+				    union lquota_rec *quota_rec)
+{
+#ifdef __BIG_ENDIAN
+	struct iam_descr        *descr;
+
+	LASSERT(obj->oo_dir != NULL);
+	descr = obj->oo_dir->od_container.ic_descr;
+
+	memcpy(quota_rec, rec, descr->id_rec_size);
+
+	osd_quota_swab((char *)quota_rec, descr->id_rec_size);
+	return (const struct dt_rec *)quota_rec;
+#else
+	return rec;
+#endif
+}
+
+void osd_quota_unpack(struct osd_object *obj, const struct dt_rec *rec)
+{
+#ifdef __BIG_ENDIAN
+	struct iam_descr *descr;
+
+	LASSERT(obj->oo_dir != NULL);
+	descr = obj->oo_dir->od_container.ic_descr;
+
+	osd_quota_swab((char *)rec, descr->id_rec_size);
+#else
+	return;
+#endif
+}
+
+static inline int osd_qid_type(struct osd_thandle *oh, int i)
+{
+	return (oh->ot_id_type & (1 << i)) ? GRPQUOTA : USRQUOTA;
+}
+
+static inline void osd_qid_set_type(struct osd_thandle *oh, int i, int type)
+{
+	oh->ot_id_type |= ((type == GRPQUOTA) ? (1 << i) : 0);
+}
+
+/**
+ * Reserve journal credits for quota files update first, then call
+ * ->op_begin() to perform quota enforcement.
+ *
+ * \param  env    - the environment passed by the caller
+ * \param  oh     - osd transaction handle
+ * \param  qi     - quota id & space required for this operation
+ * \param  allocated - dquot entry in quota accounting file has been allocated
+ * \param  flags  - if the operation is write, return no user quota, no
+ *                  group quota, or sync commit flags to the caller
+ *
+ * \retval 0      - success
+ * \retval -ve    - failure
+ */
+int osd_declare_qid(const struct lu_env *env, struct osd_thandle *oh,
+                    struct lquota_id_info *qi, bool allocated, int *flags)
+{
+	struct osd_thread_info  *info = osd_oti_get(env);
+	struct osd_device       *dev = info->oti_dev;
+	struct qsd_instance     *qsd = dev->od_quota_slave;
+	int                      i, rc;
+	bool                     found = false;
+	ENTRY;
+
+	LASSERT(oh != NULL);
+	LASSERTF(oh->ot_id_cnt <= OSD_MAX_UGID_CNT, "count=%d\n",
+		 oh->ot_id_cnt);
+
+	for (i = 0; i < oh->ot_id_cnt; i++) {
+		if (oh->ot_id_array[i] == qi->lqi_id.qid_uid &&
+		    osd_qid_type(oh, i) == qi->lqi_type) {
+			found = true;
+			break;
+		}
+	}
+
+	if (!found) {
+		/* we need to account for credits for this new ID */
+		if (i >= OSD_MAX_UGID_CNT) {
+			CERROR("Too many(%d) trans qids!\n", i + 1);
+			RETURN(-EOVERFLOW);
+		}
+
+		OSD_DECLARE_OP(oh, quota,
+			       (allocated || qi->lqi_id.qid_uid == 0) ?
+			       1 : LDISKFS_QUOTA_INIT_BLOCKS(osd_sb(dev)));
+
+		oh->ot_id_array[i] = qi->lqi_id.qid_uid;
+		osd_qid_set_type(oh, i, qi->lqi_type);
+		oh->ot_id_cnt++;
+	}
+
+	if (unlikely(qsd == NULL))
+		/* quota slave instance hasn't been allocated yet */
+		RETURN(0);
+
+	/* check quota */
+	rc = qsd_op_begin(env, qsd, oh->ot_quota_trans, qi, flags);
+	RETURN(rc);
+}
+
+/**
+ * Wrapper for osd_declare_qid()
+ *
+ * \param  env    - the environment passed by the caller
+ * \param  uid    - user id of the inode
+ * \param  gid    - group id of the inode
+ * \param  space  - how many blocks/inodes will be consumed/released
+ * \param  oh     - osd transaction handle
+ * \param  is_blk - block quota or inode quota?
+ * \param  allocated - dquot entry in quota accounting file has been allocated
+ * \param  flags  - if the operation is write, return no user quota, no
+ *                  group quota, or sync commit flags to the caller
+ * \param force   - set to 1 when changes are performed by root user and thus
+ *                  can't failed with EDQUOT
+ *
+ * \retval 0      - success
+ * \retval -ve    - failure
+ */
+int osd_declare_inode_qid(const struct lu_env *env, qid_t uid, qid_t gid,
+			  long long space, struct osd_thandle *oh,
+			  bool is_blk, bool allocated, int *flags, bool force)
+{
+	struct osd_thread_info  *info = osd_oti_get(env);
+	struct lquota_id_info   *qi = &info->oti_qi;
+	int                      rcu, rcg; /* user & group rc */
+	ENTRY;
+
+	/* let's start with user quota */
+	qi->lqi_id.qid_uid = uid;
+	qi->lqi_type       = USRQUOTA;
+	qi->lqi_space      = space;
+	qi->lqi_is_blk     = is_blk;
+	rcu = osd_declare_qid(env, oh, qi, allocated, flags);
+
+	if (force && (rcu == -EDQUOT || rcu == -EINPROGRESS))
+		/* ignore EDQUOT & EINPROGRESS when changes are done by root */
+		rcu = 0;
+
+	/* For non-fatal error, we want to continue to get the noquota flags
+	 * for group id. This is only for commit write, which has @flags passed
+	 * in. See osd_declare_write_commit().
+	 * When force is set to true, we also want to proceed with the gid */
+	if (rcu && (rcu != -EDQUOT || flags == NULL))
+		RETURN(rcu);
+
+	/* and now group quota */
+	qi->lqi_id.qid_gid = gid;
+	qi->lqi_type       = GRPQUOTA;
+	rcg = osd_declare_qid(env, oh, qi, allocated, flags);
+
+	if (force && (rcg == -EDQUOT || rcg == -EINPROGRESS))
+		/* as before, ignore EDQUOT & EINPROGRESS for root */
+		rcg = 0;
+
+	RETURN(rcu ? rcu : rcg);
+}
+
+/* Following code is used to migrate old admin quota files (in Linux quota
+ * file v2 format) into the new quota global indexes (in IAM format). */
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
+
+/* copied from osd_it_acct_get(), only changed the 'type' to -1 */
+static int osd_it_admin_get(const struct lu_env *env, struct dt_it *di,
+			    const struct dt_key *key)
+{
+	struct osd_it_quota	*it = (struct osd_it_quota *)di;
+	int			 type = -1;
+	qid_t			 dqid = *(qid_t *)key;
+	loff_t			 offset;
+	int			 rc;
+	ENTRY;
+
+	offset = find_tree_dqentry(env, it->oiq_obj, type, dqid,
+				   LUSTRE_DQTREEOFF, 0, it);
+	if (offset > 0) { /* Found */
+		RETURN(+1);
+	} else if (offset < 0) { /* Error */
+		QUOTA_IT_READ_ERROR(it, (int)offset);
+		RETURN((int)offset);
+	}
+
+	/* The @key is not found, move to the first valid entry */
+	rc = walk_tree_dqentry(env, it->oiq_obj, type, it->oiq_blk[0], 0,
+			       0, it);
+	if (rc > 0)
+		/* no valid entry found */
+		rc = -ENOENT;
+	RETURN(rc);
+}
+
+static int osd_it_admin_load(const struct lu_env *env,
+			     const struct dt_it *di, __u64 hash)
+{
+	int rc;
+	ENTRY;
+
+	rc = osd_it_admin_get(env, (struct dt_it *)di,
+			      (const struct dt_key *)&hash);
+	RETURN(rc);
+}
+
+static int osd_it_admin_rec(const struct lu_env *env,
+			    const struct dt_it *di,
+			    struct dt_rec *dtrec, __u32 attr)
+{
+	struct osd_it_quota	*it = (struct osd_it_quota *)di;
+	struct lu_buf		 buf;
+	loff_t			 pos;
+	int			 rc;
+	struct lustre_disk_dqblk_v2 *dqblk =
+		(struct lustre_disk_dqblk_v2 *)dtrec;
+	ENTRY;
+
+	buf.lb_buf = dqblk;
+	buf.lb_len = sizeof(*dqblk);
+
+	pos = it->oiq_offset;
+	rc = dt_record_read(env, &it->oiq_obj->oo_dt, &buf, &pos);
+	RETURN(rc);
+}
+
+/* copied from osd_it_acct_next(), only changed the 'type' to -1 */
+static int osd_it_admin_next(const struct lu_env *env, struct dt_it *di)
+{
+	struct osd_it_quota	*it = (struct osd_it_quota *)di;
+	int			 type = -1;
+	int			 depth, rc;
+	uint			 index;
+	ENTRY;
+
+	/* Let's first check if there are any remaining valid entry in the
+	 * current leaf block. Start with the next entry after the current one.
+	 */
+	depth = LUSTRE_DQTREEDEPTH;
+	index = it->oiq_index[depth];
+	if (++index < LUSTRE_DQSTRINBLK) {
+		/* Search for the next valid entry from current index */
+		rc = walk_block_dqentry(env, it->oiq_obj, type,
+					it->oiq_blk[depth], index, it);
+		if (rc < 0) {
+			QUOTA_IT_READ_ERROR(it, rc);
+			RETURN(rc);
+		} else if (rc == 0) {
+			/* Found on entry, @it is already updated to the
+			 * new position in walk_block_dqentry(). */
+			RETURN(0);
+		} else {
+			rc = osd_it_add_processed(it, depth);
+			if (rc)
+				RETURN(rc);
+		}
+	} else {
+		rc = osd_it_add_processed(it, depth);
+		if (rc)
+			RETURN(rc);
+	}
+	rc = 1;
+
+	/* We have consumed all the entries of the current leaf block, move on
+	 * to the next one. */
+	depth--;
+
+	/* We keep searching as long as walk_tree_dqentry() returns +1
+	 * (= no valid entry found). */
+	for (; depth >= 0 && rc > 0; depth--) {
+		index = it->oiq_index[depth];
+		if (++index > 0xff)
+			continue;
+		rc = walk_tree_dqentry(env, it->oiq_obj, type,
+				       it->oiq_blk[depth], depth, index, it);
+	}
+
+	if (rc < 0)
+		QUOTA_IT_READ_ERROR(it, rc);
+	RETURN(rc);
+}
+
+const struct dt_index_operations osd_admin_index_ops = {
+	.dio_lookup	= osd_acct_index_lookup,
+	.dio_it		= {
+		.init     = osd_it_acct_init,
+		.fini     = osd_it_acct_fini,
+		.get      = osd_it_admin_get,
+		.put      = osd_it_acct_put,
+		.next     = osd_it_admin_next,
+		.key      = osd_it_acct_key,
+		.key_size = osd_it_acct_key_size,
+		.rec      = osd_it_admin_rec,
+		.store    = osd_it_acct_store,
+		.load     = osd_it_admin_load
+	}
+};
+
+static int convert_quota_file(const struct lu_env *env,
+			      struct dt_object *old, struct dt_object *new,
+			      bool isblk)
+{
+	const struct dt_it_ops	*iops = &old->do_index_ops->dio_it;
+	struct osd_object	*obj;
+	struct lu_buf		 buf;
+	struct dt_it		*it;
+	struct dt_key		*key;
+	__u32			 grace;
+	struct lquota_glb_rec	*glb_rec = NULL;
+	loff_t			 pos;
+	int			 rc;
+	struct lustre_disk_dqblk_v2	*dqblk = NULL;
+	struct lustre_disk_dqinfo	*dqinfo = NULL;
+	ENTRY;
+
+	obj = osd_dt_obj(old);
+	LASSERT(obj->oo_inode);
+
+	if (i_size_read(obj->oo_inode) == 0)
+		RETURN(0);
+
+	/* allocate buffers */
+	OBD_ALLOC_PTR(dqinfo);
+	if (dqinfo == NULL)
+		RETURN(-ENOMEM);
+
+	OBD_ALLOC_PTR(glb_rec);
+	if (glb_rec == NULL)
+		GOTO(out, rc = -ENOMEM);
+
+	OBD_ALLOC_PTR(dqblk);
+	if (dqblk == NULL)
+		GOTO(out, rc = -ENOMEM);
+
+	/* convert the old igrace/bgrace */
+	buf.lb_buf = dqinfo;
+	buf.lb_len = sizeof(*dqinfo);
+	pos = LUSTRE_DQINFOOFF;
+
+	rc = dt_record_read(env, old, &buf, &pos);
+	if (rc)
+		GOTO(out, rc);
+
+	/* keep it in little endian */
+	grace = isblk ? dqinfo->dqi_bgrace : dqinfo->dqi_igrace;
+	if (grace != 0) {
+		glb_rec->qbr_time = grace;
+		rc = lquota_disk_write_glb(env, new, 0, glb_rec);
+		if (rc)
+			GOTO(out, rc);
+		glb_rec->qbr_time = 0;
+	}
+
+	/* iterate the old admin file, insert each record into the
+	 * new index file. */
+	it = iops->init(env, old, 0, BYPASS_CAPA);
+	if (IS_ERR(it))
+		GOTO(out, rc = PTR_ERR(it));
+
+	rc = iops->load(env, it, 0);
+	if (rc == -ENOENT)
+		GOTO(out_it, rc = 0);
+	else if (rc < 0)
+		GOTO(out_it, rc);
+
+	do {
+		key = iops->key(env, it);
+		if (IS_ERR(key))
+			GOTO(out_it, rc = PTR_ERR(key));
+
+		/* skip the root user/group */
+		if (*((__u64 *)key) == 0)
+			goto next;
+
+		rc = iops->rec(env, it, (struct dt_rec *)dqblk, 0);
+		if (rc)
+			GOTO(out_it, rc);
+
+		/* keep the value in little endian */
+		glb_rec->qbr_hardlimit = isblk ? dqblk->dqb_bhardlimit :
+						 dqblk->dqb_ihardlimit;
+		glb_rec->qbr_softlimit = isblk ? dqblk->dqb_bsoftlimit :
+						 dqblk->dqb_isoftlimit;
+
+		rc = lquota_disk_write_glb(env, new, *((__u64 *)key), glb_rec);
+		if (rc)
+			GOTO(out_it, rc);
+next:
+		rc = iops->next(env, it);
+	} while (rc == 0);
+
+	/* reach the end */
+	if (rc > 0)
+		rc = 0;
+
+out_it:
+	iops->put(env, it);
+	iops->fini(env, it);
+out:
+	if (dqblk != NULL)
+		OBD_FREE_PTR(dqblk);
+	if (glb_rec != NULL)
+		OBD_FREE_PTR(glb_rec);
+	if (dqinfo != NULL)
+		OBD_FREE_PTR(dqinfo);
+	return rc;
+}
+
+static int truncate_quota_index(const struct lu_env *env, struct dt_object *dt,
+				const struct dt_index_features *feat)
+{
+	struct osd_device	*osd = osd_obj2dev(osd_dt_obj(dt));
+	struct thandle		*th;
+	struct lu_attr		*attr;
+	struct osd_thandle	*oth;
+	struct inode		*inode;
+	int			 rc;
+	ENTRY;
+
+	OBD_ALLOC_PTR(attr);
+	if (attr == NULL)
+		RETURN(-ENOMEM);
+
+	attr->la_size = 0;
+	attr->la_valid = LA_SIZE;
+
+	th = dt_trans_create(env, &osd->od_dt_dev);
+	if (IS_ERR(th)) {
+		OBD_FREE_PTR(attr);
+		RETURN(PTR_ERR(th));
+	}
+
+	rc = dt_declare_punch(env, dt, 0, OBD_OBJECT_EOF, th);
+	if (rc)
+		GOTO(out, rc);
+
+	rc = dt_declare_attr_set(env, dt, attr, th);
+	if (rc)
+		GOTO(out, rc);
+
+	inode = osd_dt_obj(dt)->oo_inode;
+	LASSERT(inode);
+
+	rc = dt_declare_record_write(env, dt, inode->i_sb->s_blocksize * 2, 0, th);
+	if (rc)
+		GOTO(out, rc);
+
+	rc = dt_trans_start_local(env, &osd->od_dt_dev, th);
+	if (rc)
+		GOTO(out, rc);
+
+	dt_write_lock(env, dt, 0);
+	rc = dt_punch(env, dt, 0, OBD_OBJECT_EOF, th, BYPASS_CAPA);
+	if (rc)
+		GOTO(out_lock, rc);
+
+	rc = dt_attr_set(env, dt, attr, th, BYPASS_CAPA);
+	if (rc)
+		GOTO(out_lock, rc);
+
+	oth = container_of(th, struct osd_thandle, ot_super);
+
+	if (feat->dif_flags & DT_IND_VARKEY)
+		rc = iam_lvar_create(osd_dt_obj(dt)->oo_inode,
+				     feat->dif_keysize_max,
+				     feat->dif_ptrsize,
+				     feat->dif_recsize_max, oth->ot_handle);
+	else
+		rc = iam_lfix_create(osd_dt_obj(dt)->oo_inode,
+				     feat->dif_keysize_max,
+				     feat->dif_ptrsize,
+				     feat->dif_recsize_max, oth->ot_handle);
+out_lock:
+	dt_write_unlock(env, dt);
+out:
+	dt_trans_stop(env, &osd->od_dt_dev, th);
+	OBD_FREE_PTR(attr);
+	RETURN(rc);
+}
+
+static int set_quota_index_version(const struct lu_env *env,
+				   struct dt_object *dt)
+{
+	struct osd_device	*osd = osd_obj2dev(osd_dt_obj(dt));
+	struct thandle		*th;
+	int			 rc;
+	ENTRY;
+
+	th = dt_trans_create(env, &osd->od_dt_dev);
+	if (IS_ERR(th))
+		RETURN(PTR_ERR(th));
+
+	rc = dt_declare_version_set(env, dt, th);
+	if (rc)
+		GOTO(out, rc);
+
+	rc = dt_trans_start_local(env, &osd->od_dt_dev, th);
+	if (rc)
+		GOTO(out, rc);
+
+	th->th_sync = 1;
+	dt_version_set(env, dt, 1, th);
+out:
+	dt_trans_stop(env, &osd->od_dt_dev, th);
+	RETURN(rc);
+}
+
+#define OBJECTS		"OBJECTS"
+#define ADMIN_USR	"admin_quotafile_v2.usr"
+#define ADMIN_GRP	"admin_quotafile_v2.grp"
+
+int osd_quota_migration(const struct lu_env *env, struct dt_object *dt,
+			const struct dt_index_features *feat)
+{
+	struct osd_thread_info	*oti = osd_oti_get(env);
+	struct osd_device	*osd = osd_obj2dev(osd_dt_obj(dt));
+	struct dt_object	*root, *parent = NULL, *admin = NULL;
+	dt_obj_version_t	 version;
+	char			*fname;
+	bool			 isblk, converted = false;
+	int			 rc;
+	ENTRY;
+
+	/* not newly created global index */
+	version = dt_version_get(env, dt);
+	if (version != 0)
+		RETURN(0);
+
+	/* locate root */
+	rc = dt_root_get(env, &osd->od_dt_dev, &oti->oti_fid);
+	if (rc) {
+		CERROR("%s: Can't get root FID, rc:%d\n", osd->od_svname, rc);
+		RETURN(rc);
+	}
+
+	root = dt_locate(env, &osd->od_dt_dev, &oti->oti_fid);
+	if (IS_ERR(root)) {
+		CERROR("%s: Failed to locate root "DFID", rc:%ld\n",
+		       osd->od_svname, PFID(&oti->oti_fid), PTR_ERR(root));
+		RETURN(PTR_ERR(root));
+	}
+
+	/* locate /OBJECTS */
+	rc = dt_lookup_dir(env, root, OBJECTS, &oti->oti_fid);
+	if (rc == -ENOENT) {
+		GOTO(out, rc = 0);
+	} else if (rc) {
+		CERROR("%s: Failed to lookup %s, rc:%d\n",
+		       osd->od_svname, OBJECTS, rc);
+		GOTO(out, rc);
+	}
+
+	parent = dt_locate(env, &osd->od_dt_dev, &oti->oti_fid);
+	if (IS_ERR(parent)) {
+		CERROR("%s: Failed to locate %s "DFID", rc:%ld\n",
+		       osd->od_svname, OBJECTS, PFID(&oti->oti_fid),
+		       PTR_ERR(parent));
+		GOTO(out, rc = PTR_ERR(parent));
+	}
+
+	/* locate quota admin file */
+	if (feat == &dt_quota_iusr_features) {
+		fname = ADMIN_USR;
+		isblk = false;
+	} else if (feat == &dt_quota_busr_features) {
+		fname = ADMIN_USR;
+		isblk = true;
+	} else if (feat == &dt_quota_igrp_features) {
+		fname = ADMIN_GRP;
+		isblk = false;
+	} else {
+		fname = ADMIN_GRP;
+		isblk = true;
+	}
+
+	rc = dt_lookup_dir(env, parent, fname, &oti->oti_fid);
+	if (rc == -ENOENT) {
+		GOTO(out, rc = 0);
+	} else if (rc) {
+		CERROR("%s: Failed to lookup %s, rc:%d\n",
+		       osd->od_svname, fname, rc);
+		GOTO(out, rc);
+	}
+
+	admin = dt_locate(env, &osd->od_dt_dev, &oti->oti_fid);
+	if (IS_ERR(admin)) {
+		CERROR("%s: Failed to locate %s "DFID", rc:%d\n",
+		       osd->od_svname, fname, PFID(&oti->oti_fid), rc);
+		GOTO(out, rc = PTR_ERR(admin));
+	}
+
+	if (!dt_object_exists(admin)) {
+		CERROR("%s: Old admin file %s doesn't exist, but is still "
+		       " referenced in parent directory.\n",
+		       osd->od_svname, fname);
+		GOTO(out, rc = -ENOENT);
+	}
+
+	/* truncate the new quota index file in case of any leftovers
+	 * from last failed migration */
+	rc = truncate_quota_index(env, dt, feat);
+	if (rc) {
+		CERROR("%s: Failed to truncate the quota index "DFID", rc:%d\n",
+		       osd->od_svname, PFID(lu_object_fid(&dt->do_lu)), rc);
+		RETURN(rc);
+	}
+
+	/* set up indexing operations for the admin file */
+	admin->do_index_ops = &osd_admin_index_ops;
+
+	LCONSOLE_INFO("%s: Migrate %s quota from old admin quota file(%s) to "
+		      "new IAM quota index("DFID").\n", osd->od_svname,
+		      isblk ? "block" : "inode", fname,
+		      PFID(lu_object_fid(&dt->do_lu)));
+
+	/* iterate the admin quota file, and insert each record into
+	 * the new index file */
+	rc = convert_quota_file(env, admin, dt, isblk);
+	if (rc)
+		CERROR("%s: Migrate old admin quota file(%s) failed, rc:%d\n",
+		       osd->od_svname, fname, rc);
+	converted = true;
+out:
+	/* if no migration happen, we need to set the default grace time. */
+	if (!converted && rc == 0) {
+		struct lquota_glb_rec *rec = &oti->oti_quota_rec.lqr_glb_rec;
+
+		rec->qbr_hardlimit = 0;
+		rec->qbr_softlimit = 0;
+		rec->qbr_granted = 0;
+		rec->qbr_time = isblk ? MAX_DQ_TIME : MAX_IQ_TIME;
+
+		rc = lquota_disk_write_glb(env, dt, 0, rec);
+		if (rc)
+			CERROR("%s: Failed to set default grace time for "
+			       "index("DFID"), rc:%d\n", osd->od_svname,
+			       PFID(lu_object_fid(&dt->do_lu)), rc);
+	}
+
+	/* bump index version to 1, so the migration will be skipped
+	 * next time. */
+	if (rc == 0) {
+		rc = set_quota_index_version(env , dt);
+		if (rc)
+			CERROR("%s: Failed to set quota index("DFID") "
+			       "version, rc:%d\n", osd->od_svname,
+			       PFID(lu_object_fid(&dt->do_lu)), rc);
+	}
+
+	if (admin && !IS_ERR(admin))
+		lu_object_put(env, &admin->do_lu);
+	if (parent && !IS_ERR(parent))
+		lu_object_put(env, &parent->do_lu);
+	lu_object_put(env, &root->do_lu);
+
+	RETURN(rc);
+}
+#else
+#warning "remove old quota compatibility code"
+#endif