X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Flod%2Flod_lov.c;h=80e96cd5a75995d6934a1926b465e1947afd1209;hp=e99f6466011742031c95df94aa66451a942a0102;hb=de2d5808bd2987f76d2486272e1a9c192ba277d4;hpb=deb7a5c9f42c1fb7a6f225e2eb09b64b79efc64c

diff --git a/lustre/lod/lod_lov.c b/lustre/lod/lod_lov.c
index e99f646..80e96cd 100644
--- a/lustre/lod/lod_lov.c
+++ b/lustre/lod/lod_lov.c
@@ -23,21 +23,19 @@
  * Copyright  2009 Sun Microsystems, Inc. All rights reserved
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2012, 2013, Intel Corporation.
  */
 /*
  * lustre/lod/lod_lov.c
  *
- * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com> 
+ * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_MDS
 
 #include <obd_class.h>
-#include <obd_lov.h>
+#include <lustre_lfsck.h>
+#include <lustre_lmv.h>
 
 #include "lod_internal.h"
 
@@ -187,6 +185,7 @@ int lod_add_device(const struct lu_env *env, struct lod_device *lod,
 	struct lod_tgt_desc     *tgt_desc;
 	struct lod_tgt_descs    *ltd;
 	struct obd_uuid		obd_uuid;
+	bool			for_ost;
 	ENTRY;
 
 	CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, index, gen);
@@ -215,6 +214,7 @@ int lod_add_device(const struct lu_env *env, struct lod_device *lod,
 	data->ocd_index = index;
 
 	if (strcmp(LUSTRE_OSC_NAME, type) == 0) {
+		for_ost = true;
 		data->ocd_connect_flags |= OBD_CONNECT_AT |
 					   OBD_CONNECT_FULL20 |
 					   OBD_CONNECT_INDEX |
@@ -228,13 +228,15 @@ int lod_add_device(const struct lu_env *env, struct lod_device *lod,
 					   OBD_CONNECT_FID |
 					   OBD_CONNECT_LVB_TYPE |
 					   OBD_CONNECT_VERSION |
-					   OBD_CONNECT_PINGLESS;
+					   OBD_CONNECT_PINGLESS |
+					   OBD_CONNECT_LFSCK;
 
 		data->ocd_group = tgt_index;
 		ltd = &lod->lod_ost_descs;
 	} else {
 		struct obd_import *imp = obd->u.cli.cl_import;
 
+		for_ost = false;
 		data->ocd_ibits_known = MDS_INODELOCK_UPDATE;
 		data->ocd_connect_flags |= OBD_CONNECT_ACL |
 					   OBD_CONNECT_MDS_CAPA |
@@ -243,14 +245,15 @@ int lod_add_device(const struct lu_env *env, struct lod_device *lod,
 					   OBD_CONNECT_MDS_MDS |
 					   OBD_CONNECT_FID |
 					   OBD_CONNECT_AT |
-					   OBD_CONNECT_FULL20;
+					   OBD_CONNECT_FULL20 |
+					   OBD_CONNECT_LFSCK;
 		/* XXX set MDS-MDS flags, remove this when running this
 		 * on client*/
 		data->ocd_connect_flags |= OBD_CONNECT_MDS_MDS;
 		spin_lock(&imp->imp_lock);
 		imp->imp_server_timeout = 1;
 		spin_unlock(&imp->imp_lock);
-		imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
+		imp->imp_client->cli_request_portal = OUT_PORTAL;
 		CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
 		      obd->obd_name);
 		ltd = &lod->lod_mdt_descs;
@@ -350,7 +353,12 @@ int lod_add_device(const struct lu_env *env, struct lod_device *lod,
 	if (lod->lod_recovery_completed)
 		ldev->ld_ops->ldo_recovery_complete(env, ldev);
 
-	RETURN(0);
+	rc = lfsck_add_target(env, lod->lod_child, d, exp, index, for_ost);
+	if (rc != 0)
+		CERROR("Fail to add LFSCK target: name = %s, type = %s, "
+		       "index = %u, rc = %d\n", osp, type, index, rc);
+
+	RETURN(rc);
 
 out_pool:
 	lod_ost_pool_remove(&lod->lod_pool_info, index);
@@ -368,17 +376,23 @@ out_free:
 /*
  * helper function to schedule OST removal from the device table
  */
-static void __lod_del_device(struct lod_tgt_descs *ltd,
-			     unsigned idx)
+static void __lod_del_device(const struct lu_env *env, struct lod_device *lod,
+			     struct lod_tgt_descs *ltd, unsigned idx,
+			     bool for_ost)
 {
 	LASSERT(LTD_TGT(ltd, idx));
+
+	lfsck_del_target(env, lod->lod_child, LTD_TGT(ltd, idx)->ltd_tgt,
+			 idx, for_ost);
+
 	if (LTD_TGT(ltd, idx)->ltd_reap == 0) {
 		LTD_TGT(ltd, idx)->ltd_reap = 1;
 		ltd->ltd_death_row++;
 	}
 }
 
-int lod_fini_tgt(struct lod_device *lod, struct lod_tgt_descs *ltd)
+int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
+		 struct lod_tgt_descs *ltd, bool for_ost)
 {
 	int idx;
 
@@ -387,7 +401,7 @@ int lod_fini_tgt(struct lod_device *lod, struct lod_tgt_descs *ltd)
 	lod_getref(ltd);
 	mutex_lock(&ltd->ltd_mutex);
 	cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx)
-		__lod_del_device(ltd, idx);
+		__lod_del_device(env, lod, ltd, idx, for_ost);
 	mutex_unlock(&ltd->ltd_mutex);
 	lod_putref(lod, ltd);
 	CFS_FREE_BITMAP(ltd->ltd_tgt_bitmap);
@@ -414,7 +428,7 @@ int lod_fini_tgt(struct lod_device *lod, struct lod_tgt_descs *ltd)
  */
 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
 		   struct lod_tgt_descs *ltd, char *osp, unsigned idx,
-		   unsigned gen)
+		   unsigned gen, bool for_ost)
 {
 	struct obd_device *obd;
 	int                rc = 0;
@@ -457,7 +471,7 @@ int lod_del_device(const struct lu_env *env, struct lod_device *lod,
 		GOTO(out, rc = -EINVAL);
 	}
 
-	__lod_del_device(ltd, idx);
+	__lod_del_device(env, lod, ltd, idx, for_ost);
 	EXIT;
 out:
 	mutex_unlock(&ltd->ltd_mutex);
@@ -469,7 +483,8 @@ int lod_ea_store_resize(struct lod_thread_info *info, int size)
 {
 	int round = size_roundup_power2(size);
 
-	LASSERT(round <= lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
+	LASSERT(round <=
+		lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
 	if (info->lti_ea_store) {
 		LASSERT(info->lti_ea_store_size);
 		LASSERT(info->lti_ea_store_size < round);
@@ -504,9 +519,8 @@ int lod_generate_and_set_lovea(const struct lu_env *env,
 	ENTRY;
 
 	LASSERT(lo);
-	LASSERT(lo->ldo_stripenr > 0);
 
-	magic = lo->ldo_pool ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
+	magic = lo->ldo_pool != NULL ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
 	lmm_size = lov_mds_md_size(lo->ldo_stripenr, magic);
 	if (info->lti_ea_store_size < lmm_size) {
 		rc = lod_ea_store_resize(info, lmm_size);
@@ -514,14 +528,21 @@ int lod_generate_and_set_lovea(const struct lu_env *env,
 			RETURN(rc);
 	}
 
+	if (lo->ldo_pattern == 0) /* default striping */
+		lo->ldo_pattern = LOV_PATTERN_RAID0;
+
 	lmm = info->lti_ea_store;
 
 	lmm->lmm_magic = cpu_to_le32(magic);
-	lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
-	fid_ostid_pack(fid, &lmm->lmm_oi);
-	ostid_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
+	lmm->lmm_pattern = cpu_to_le32(lo->ldo_pattern);
+	fid_to_lmm_oi(fid, &lmm->lmm_oi);
+	if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_LMMOI))
+		lmm->lmm_oi.oi.oi_id++;
+	lmm_oi_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
 	lmm->lmm_stripe_size = cpu_to_le32(lo->ldo_stripe_size);
 	lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_stripenr);
+	if (lo->ldo_pattern & LOV_PATTERN_F_RELEASED)
+		lmm->lmm_stripe_count = cpu_to_le16(lo->ldo_released_stripenr);
 	lmm->lmm_layout_gen = 0;
 	if (magic == LOV_MAGIC_V1) {
 		objs = &lmm->lmm_objects[0];
@@ -535,23 +556,32 @@ int lod_generate_and_set_lovea(const struct lu_env *env,
 	}
 
 	for (i = 0; i < lo->ldo_stripenr; i++) {
-		const struct lu_fid	*fid;
+		struct lu_fid		*fid	= &info->lti_fid;
 		struct lod_device	*lod;
 		__u32			index;
+		int			type	= LU_SEQ_RANGE_OST;
 
 		lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
 		LASSERT(lo->ldo_stripe[i]);
-		fid = lu_object_fid(&lo->ldo_stripe[i]->do_lu);
 
-		rc = fid_ostid_pack(fid, &info->lti_ostid);
+		*fid = *lu_object_fid(&lo->ldo_stripe[i]->do_lu);
+		if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MULTIPLE_REF)) {
+			if (cfs_fail_val == 0)
+				cfs_fail_val = fid->f_oid;
+			else
+				fid->f_oid = cfs_fail_val;
+		}
+
+		rc = fid_to_ostid(fid, &info->lti_ostid);
 		LASSERT(rc == 0);
 
 		ostid_cpu_to_le(&info->lti_ostid, &objs[i].l_ost_oi);
 		objs[i].l_ost_gen    = cpu_to_le32(0);
-		rc = lod_fld_lookup(env, lod, fid, &index, LU_SEQ_RANGE_OST);
+		rc = lod_fld_lookup(env, lod, fid, &index, &type);
 		if (rc < 0) {
 			CERROR("%s: Can not locate "DFID": rc = %d\n",
 			       lod2obd(lod)->obd_name, PFID(fid), rc);
+			lod_object_free_striping(env, lo);
 			RETURN(rc);
 		}
 		objs[i].l_ost_idx = cpu_to_le32(index);
@@ -561,38 +591,41 @@ int lod_generate_and_set_lovea(const struct lu_env *env,
 	info->lti_buf.lb_len = lmm_size;
 	rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0,
 			  th, BYPASS_CAPA);
+	if (rc < 0)
+		lod_object_free_striping(env, lo);
 
 	RETURN(rc);
 }
 
-int lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
+int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
+	       const char *name)
 {
-	struct lod_thread_info *info = lod_env_info(env);
-	struct dt_object       *next = dt_object_child(&lo->ldo_obj);
+	struct lod_thread_info	*info = lod_env_info(env);
+	struct dt_object	*next = dt_object_child(&lo->ldo_obj);
 	int			rc;
 	ENTRY;
 
 	LASSERT(info);
 
-	if (unlikely(info->lti_ea_store_size == 0)) {
+	if (unlikely(info->lti_ea_store == NULL)) {
 		/* just to enter in allocation block below */
 		rc = -ERANGE;
 	} else {
 repeat:
 		info->lti_buf.lb_buf = info->lti_ea_store;
 		info->lti_buf.lb_len = info->lti_ea_store_size;
-		rc = dt_xattr_get(env, next, &info->lti_buf, XATTR_NAME_LOV,
-				  BYPASS_CAPA);
+		rc = dt_xattr_get(env, next, &info->lti_buf, name, BYPASS_CAPA);
 	}
+
 	/* if object is not striped or inaccessible */
-	if (rc == -ENODATA)
+	if (rc == -ENODATA || rc == -ENOENT)
 		RETURN(0);
 
 	if (rc == -ERANGE) {
 		/* EA doesn't fit, reallocate new buffer */
-		rc = dt_xattr_get(env, next, &LU_BUF_NULL, XATTR_NAME_LOV,
+		rc = dt_xattr_get(env, next, &LU_BUF_NULL, name,
 				  BYPASS_CAPA);
-		if (rc == -ENODATA)
+		if (rc == -ENODATA || rc == -ENOENT)
 			RETURN(0);
 		else if (rc < 0)
 			RETURN(rc);
@@ -615,11 +648,10 @@ int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
 	struct dt_object	*next = dt_object_child(dt);
 	struct lov_user_md_v3	*v3;
 	int			 rc;
-	int			 cplen = 0;
 	ENTRY;
 
-	LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
-
+	if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
+		RETURN(-ENOTDIR);
 	/*
 	 * store striping defaults into new directory
 	 * used to implement defaults inheritance
@@ -633,35 +665,53 @@ int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
 				lo->ldo_def_stripe_offset))
 		RETURN(0);
 
-	/* XXX: use thread info */
-	OBD_ALLOC_PTR(v3);
-	if (v3 == NULL)
-		RETURN(-ENOMEM);
-
-	v3->lmm_magic = cpu_to_le32(LOV_MAGIC_V3);
-	v3->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
-	v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
+	v3 = info->lti_ea_store;
+	if (info->lti_ea_store_size < sizeof(*v3)) {
+		rc = lod_ea_store_resize(info, sizeof(*v3));
+		if (rc != 0)
+			RETURN(rc);
+		v3 = info->lti_ea_store;
+	}
+	memset(v3, 0, sizeof(*v3));
+	v3->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V3);
 	v3->lmm_stripe_count = cpu_to_le16(lo->ldo_def_stripenr);
 	v3->lmm_stripe_offset = cpu_to_le16(lo->ldo_def_stripe_offset);
-	if (lo->ldo_pool) {
-		cplen = strlcpy(v3->lmm_pool_name, lo->ldo_pool,
-				sizeof(v3->lmm_pool_name));
-		if (cplen >= sizeof(v3->lmm_pool_name)) {
-			OBD_FREE_PTR(v3);
-			RETURN(-E2BIG);
-		}
-	}
-
+	v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
+	if (lo->ldo_pool != NULL)
+		strlcpy(v3->lmm_pool_name, lo->ldo_pool,
+			sizeof(v3->lmm_pool_name));
 	info->lti_buf.lb_buf = v3;
 	info->lti_buf.lb_len = sizeof(*v3);
 	rc = dt_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV, 0, th,
 			BYPASS_CAPA);
 
-	OBD_FREE_PTR(v3);
-
 	RETURN(rc);
 }
 
+static int validate_lod_and_idx(struct lod_device *md, int idx)
+{
+	if (unlikely(idx >= md->lod_ost_descs.ltd_tgts_size ||
+		     !cfs_bitmap_check(md->lod_ost_bitmap, idx))) {
+		CERROR("%s: bad idx: %d of %d\n", lod2obd(md)->obd_name, idx,
+		       md->lod_ost_descs.ltd_tgts_size);
+		return -EINVAL;
+	}
+
+	if (unlikely(OST_TGT(md, idx) == NULL)) {
+		CERROR("%s: bad lod_tgt_desc for idx: %d\n",
+		       lod2obd(md)->obd_name, idx);
+		return -EINVAL;
+	}
+
+	if (unlikely(OST_TGT(md, idx)->ltd_ost == NULL)) {
+		CERROR("%s: invalid lod device, for idx: %d\n",
+		       lod2obd(md)->obd_name , idx);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 /*
  * allocate array of objects pointers, find/create objects
  * stripenr and other fields should be initialized by this moment
@@ -670,7 +720,7 @@ int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
 			   struct lov_ost_data_v1 *objs)
 {
 	struct lod_thread_info	*info = lod_env_info(env);
-	struct lod_device	*md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+	struct lod_device	*md;
 	struct lu_object	*o, *n;
 	struct lu_device	*nd;
 	struct dt_object       **stripe;
@@ -678,7 +728,8 @@ int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
 	int			 i, idx, rc = 0;
 	ENTRY;
 
-	LASSERT(lo);
+	LASSERT(lo != NULL);
+	md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
 	LASSERT(lo->ldo_stripe == NULL);
 	LASSERT(lo->ldo_stripenr > 0);
 	LASSERT(lo->ldo_stripe_size > 0);
@@ -689,21 +740,24 @@ int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
 		RETURN(-ENOMEM);
 
 	for (i = 0; i < lo->ldo_stripenr; i++) {
+		if (unlikely(lovea_slot_is_dummy(&objs[i])))
+			continue;
+
 		ostid_le_to_cpu(&objs[i].l_ost_oi, &info->lti_ostid);
-		idx = le64_to_cpu(objs[i].l_ost_idx);
-		fid_ostid_unpack(&info->lti_fid, &info->lti_ostid, idx);
+		idx = le32_to_cpu(objs[i].l_ost_idx);
+		rc = ostid_to_fid(&info->lti_fid, &info->lti_ostid, idx);
+		if (rc != 0)
+			GOTO(out, rc);
 		LASSERTF(fid_is_sane(&info->lti_fid), ""DFID" insane!\n",
 			 PFID(&info->lti_fid));
-		/*
-		 * XXX: assertion is left for testing, to make
-		 * sure we never process requests till configuration
-		 * is completed. to be changed to -EINVAL
-		 */
-
 		lod_getref(&md->lod_ost_descs);
-		LASSERT(cfs_bitmap_check(md->lod_ost_bitmap, idx));
-		LASSERT(OST_TGT(md,idx));
-		LASSERTF(OST_TGT(md,idx)->ltd_ost, "idx %d\n", idx);
+
+		rc = validate_lod_and_idx(md, idx);
+		if (unlikely(rc != 0)) {
+			lod_putref(md, &md->lod_ost_descs);
+			GOTO(out, rc);
+		}
+
 		nd = &OST_TGT(md,idx)->ltd_ost->dd_lu_dev;
 		lod_putref(md, &md->lod_ost_descs);
 
@@ -727,6 +781,7 @@ out:
 				lu_object_put(env, &stripe[i]->do_lu);
 
 		OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
+		lo->ldo_stripenr = 0;
 	} else {
 		lo->ldo_stripe = stripe;
 		lo->ldo_stripes_allocated = stripe_len;
@@ -744,6 +799,7 @@ int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
 	struct lov_mds_md_v1	*lmm;
 	struct lov_ost_data_v1	*objs;
 	__u32			 magic;
+	__u32			 pattern;
 	int			 rc = 0;
 	ENTRY;
 
@@ -753,15 +809,20 @@ int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
 
 	lmm = (struct lov_mds_md_v1 *) buf->lb_buf;
 	magic = le32_to_cpu(lmm->lmm_magic);
+	pattern = le32_to_cpu(lmm->lmm_pattern);
 
 	if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
 		GOTO(out, rc = -EINVAL);
-	if (le32_to_cpu(lmm->lmm_pattern) != LOV_PATTERN_RAID0)
+	if (lov_pattern(pattern) != LOV_PATTERN_RAID0)
 		GOTO(out, rc = -EINVAL);
 
+	lo->ldo_pattern = pattern;
 	lo->ldo_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
-	lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
 	lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
+	lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
+	/* released file stripenr fixup. */
+	if (pattern & LOV_PATTERN_F_RELEASED)
+		lo->ldo_stripenr = 0;
 
 	LASSERT(buf->lb_len >= lov_mds_md_size(lo->ldo_stripenr, magic));
 
@@ -773,155 +834,223 @@ int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
 		objs = &lmm->lmm_objects[0];
 	}
 
-	rc = lod_initialize_objects(env, lo, objs);
+	if (lo->ldo_stripenr > 0)
+		rc = lod_initialize_objects(env, lo, objs);
 
 out:
 	RETURN(rc);
 }
 
-/*
- * Load and parse striping information, create in-core representation for the
- * stripes
- */
-int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
+int lod_load_striping_locked(const struct lu_env *env, struct lod_object *lo)
 {
 	struct lod_thread_info	*info = lod_env_info(env);
+	struct lu_buf		*buf  = &info->lti_buf;
 	struct dt_object	*next = dt_object_child(&lo->ldo_obj);
-	int			 rc;
+	int			 rc = 0;
 	ENTRY;
 
-	/*
-	 * currently this code is supposed to be called from declaration
-	 * phase only, thus the object is not expected to be locked by caller
-	 */
-	dt_write_lock(env, next, 0);
 	/* already initialized? */
-	if (lo->ldo_stripe) {
-		int i;
-		/* check validity */
-		for (i = 0; i < lo->ldo_stripenr; i++)
-			LASSERTF(lo->ldo_stripe[i], "stripe %d is NULL\n", i);
+	if (lo->ldo_stripe != NULL)
 		GOTO(out, rc = 0);
-	}
 
 	if (!dt_object_exists(next))
 		GOTO(out, rc = 0);
 
-	/* only regular files can be striped */
-	if (!(lu_object_attr(lod2lu_obj(lo)) & S_IFREG))
+	/* Do not load stripe for slaves of striped dir */
+	if (lo->ldo_dir_slave_stripe)
 		GOTO(out, rc = 0);
 
-	LASSERT(lo->ldo_stripenr == 0);
+	if (S_ISREG(lu_object_attr(lod2lu_obj(lo)))) {
+		rc = lod_get_lov_ea(env, lo);
+		if (rc <= 0)
+			GOTO(out, rc);
+		/*
+		 * there is LOV EA (striping information) in this object
+		 * let's parse it and create in-core objects for the stripes
+		 */
+		buf->lb_buf = info->lti_ea_store;
+		buf->lb_len = info->lti_ea_store_size;
+		rc = lod_parse_striping(env, lo, buf);
+	} else if (S_ISDIR(lu_object_attr(lod2lu_obj(lo)))) {
+		rc = lod_get_lmv_ea(env, lo);
+		if (rc < sizeof(struct lmv_mds_md_v1))
+			GOTO(out, rc = rc > 0 ? -EINVAL : rc);
+
+		buf->lb_buf = info->lti_ea_store;
+		buf->lb_len = info->lti_ea_store_size;
+		if (rc == sizeof(struct lmv_mds_md_v1)) {
+			rc = lod_load_lmv_shards(env, lo, buf, true);
+			if (buf->lb_buf != info->lti_ea_store) {
+				OBD_FREE_LARGE(info->lti_ea_store,
+					       info->lti_ea_store_size);
+				info->lti_ea_store = buf->lb_buf;
+				info->lti_ea_store_size = buf->lb_len;
+			}
 
-	rc = lod_get_lov_ea(env, lo);
-	if (rc <= 0)
-		GOTO(out, rc);
+			if (rc < 0)
+				GOTO(out, rc);
+		}
 
-	/*
-	 * there is LOV EA (striping information) in this object
-	 * let's parse it and create in-core objects for the stripes
-	 */
-	info->lti_buf.lb_buf = info->lti_ea_store;
-	info->lti_buf.lb_len = info->lti_ea_store_size;
-	rc = lod_parse_striping(env, lo, &info->lti_buf);
+		/*
+		 * there is LOV EA (striping information) in this object
+		 * let's parse it and create in-core objects for the stripes
+		 */
+		rc = lod_parse_dir_striping(env, lo, buf);
+	}
 out:
-	dt_write_unlock(env, next);
 	RETURN(rc);
 }
 
+/**
+ * Load and parse striping information, create in-core representation for the
+ * stripes
+ **/
+int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
+{
+	struct dt_object	*next = dt_object_child(&lo->ldo_obj);
+	int			rc = 0;
+
+	/* currently this code is supposed to be called from declaration
+	 * phase only, thus the object is not expected to be locked by caller */
+	dt_write_lock(env, next, 0);
+	rc = lod_load_striping_locked(env, lo);
+	dt_write_unlock(env, next);
+	return rc;
+}
+
+/* verify the striping information for directory */
 int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf,
-			int specific)
+			bool is_from_disk)
 {
 	struct lov_user_md_v1	*lum;
-	struct lov_user_md_v3	*v3 = NULL;
+	struct lov_user_md_v3	*lum3;
 	struct pool_desc	*pool = NULL;
-	int			 rc;
+	__u32			 magic;
+	__u32			 stripe_size;
+	__u16			 stripe_count;
+	__u16			 stripe_offset;
+	size_t			 lum_size;
+	int			 rc = 0;
 	ENTRY;
 
 	lum = buf->lb_buf;
 
-	if (lum->lmm_magic != LOV_USER_MAGIC_V1 &&
-	    lum->lmm_magic != LOV_USER_MAGIC_V3 &&
-	    lum->lmm_magic != LOV_MAGIC_V1_DEF &&
-	    lum->lmm_magic != LOV_MAGIC_V3_DEF) {
-		CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#x\n",
-		       lum->lmm_magic);
-		RETURN(-EINVAL);
+	LASSERT(sizeof(*lum) < sizeof(*lum3));
+
+	if (buf->lb_len < sizeof(*lum)) {
+		CDEBUG(D_IOCTL, "buf len %zd too small for lov_user_md\n",
+		       buf->lb_len);
+		GOTO(out, rc = -EINVAL);
 	}
 
-	if ((specific && lum->lmm_pattern != LOV_PATTERN_RAID0) ||
-	    (specific == 0 && lum->lmm_pattern != 0)) {
+	magic = le32_to_cpu(lum->lmm_magic);
+	if (magic != LOV_USER_MAGIC_V1 &&
+	    magic != LOV_USER_MAGIC_V3 &&
+	    magic != LOV_MAGIC_V1_DEF &&
+	    magic != LOV_MAGIC_V3_DEF) {
+		CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#x\n", magic);
+		GOTO(out, rc = -EINVAL);
+	}
+
+	/* the user uses "0" for default stripe pattern normally. */
+	if (!is_from_disk && lum->lmm_pattern == 0)
+		lum->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
+
+	if (le32_to_cpu(lum->lmm_pattern) != LOV_PATTERN_RAID0) {
 		CDEBUG(D_IOCTL, "bad userland stripe pattern: %#x\n",
-		       lum->lmm_pattern);
-		RETURN(-EINVAL);
+		       le32_to_cpu(lum->lmm_pattern));
+		GOTO(out, rc = -EINVAL);
 	}
 
 	/* 64kB is the largest common page size we see (ia64), and matches the
 	 * check in lfs */
-	if (lum->lmm_stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
-		CDEBUG(D_IOCTL, "stripe size %u not multiple of %u, fixing\n",
-		       lum->lmm_stripe_size, LOV_MIN_STRIPE_SIZE);
-		RETURN(-EINVAL);
+	stripe_size = le32_to_cpu(lum->lmm_stripe_size);
+	if (stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
+		CDEBUG(D_IOCTL, "stripe size %u not a multiple of %u\n",
+		       stripe_size, LOV_MIN_STRIPE_SIZE);
+		GOTO(out, rc = -EINVAL);
 	}
 
 	/* an offset of -1 is treated as a "special" valid offset */
-	if (lum->lmm_stripe_offset != (typeof(lum->lmm_stripe_offset))(-1)) {
+	stripe_offset = le16_to_cpu(lum->lmm_stripe_offset);
+	if (stripe_offset != (typeof(stripe_offset))-1) {
 		/* if offset is not within valid range [0, osts_size) */
-		if (lum->lmm_stripe_offset >= d->lod_osts_size) {
+		if (stripe_offset >= d->lod_osts_size) {
 			CDEBUG(D_IOCTL, "stripe offset %u >= bitmap size %u\n",
-			       lum->lmm_stripe_offset, d->lod_osts_size);
-			RETURN(-EINVAL);
+			       stripe_offset, d->lod_osts_size);
+			GOTO(out, rc = -EINVAL);
 		}
 
 		/* if lmm_stripe_offset is *not* in bitmap */
-		if (!cfs_bitmap_check(d->lod_ost_bitmap,
-				      lum->lmm_stripe_offset)) {
+		if (!cfs_bitmap_check(d->lod_ost_bitmap, stripe_offset)) {
 			CDEBUG(D_IOCTL, "stripe offset %u not in bitmap\n",
-			       lum->lmm_stripe_offset);
-			RETURN(-EINVAL);
+			       stripe_offset);
+			GOTO(out, rc = -EINVAL);
 		}
 	}
 
-	if (lum->lmm_magic == LOV_USER_MAGIC_V3)
-		v3 = buf->lb_buf;
+	if (magic == LOV_USER_MAGIC_V1 || magic == LOV_MAGIC_V1_DEF)
+		lum_size = offsetof(struct lov_user_md_v1,
+				    lmm_objects[0]);
+	else if (magic == LOV_USER_MAGIC_V3 || magic == LOV_MAGIC_V3_DEF)
+		lum_size = offsetof(struct lov_user_md_v3,
+				    lmm_objects[0]);
+	else
+		GOTO(out, rc = -EINVAL);
 
-	if (v3)
-		/* In the function below, .hs_keycmp resolves to
-		 * pool_hashkey_keycmp() */
-		/* coverity[overrun-buffer-val] */
-		pool = lod_find_pool(d, v3->lmm_pool_name);
+	stripe_count = le16_to_cpu(lum->lmm_stripe_count);
+	if (buf->lb_len != lum_size) {
+		CDEBUG(D_IOCTL, "invalid buf len %zd for lov_user_md with "
+		       "magic %#x and stripe_count %u\n",
+		       buf->lb_len, magic, stripe_count);
+		GOTO(out, rc = -EINVAL);
+	}
 
-	if (pool != NULL) {
-		__u16 offs = v3->lmm_stripe_offset;
+	if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_MAGIC_V3_DEF))
+		goto out;
 
-		if (offs != (typeof(v3->lmm_stripe_offset))(-1)) {
-			rc = lod_check_index_in_pool(offs, pool);
-			if (rc < 0) {
-				lod_pool_putref(pool);
-				RETURN(-EINVAL);
-			}
-		}
+	lum3 = buf->lb_buf;
+	if (buf->lb_len < sizeof(*lum3)) {
+		CDEBUG(D_IOCTL, "buf len %zd too small for lov_user_md_v3\n",
+		       buf->lb_len);
+		GOTO(out, rc = -EINVAL);
+	}
 
-		if (specific && lum->lmm_stripe_count > pool_tgt_count(pool)) {
-			CDEBUG(D_IOCTL,
-			       "stripe count %u > # OSTs %u in the pool\n",
-			       lum->lmm_stripe_count, pool_tgt_count(pool));
-			lod_pool_putref(pool);
-			RETURN(-EINVAL);
-		}
+	/* In the function below, .hs_keycmp resolves to
+	 * pool_hashkey_keycmp() */
+	/* coverity[overrun-buffer-val] */
+	pool = lod_find_pool(d, lum3->lmm_pool_name);
+	if (pool == NULL)
+		goto out;
+
+	if (stripe_offset != (typeof(stripe_offset))-1) {
+		rc = lod_check_index_in_pool(stripe_offset, pool);
+		if (rc < 0)
+			GOTO(out, rc = -EINVAL);
+	}
 
-		lod_pool_putref(pool);
+	if (is_from_disk && stripe_count > pool_tgt_count(pool)) {
+		CDEBUG(D_IOCTL,
+		       "stripe count %u > # OSTs %u in the pool\n",
+		       stripe_count, pool_tgt_count(pool));
+		GOTO(out, rc = -EINVAL);
 	}
 
-	RETURN(0);
+out:
+	if (pool != NULL)
+		lod_pool_putref(pool);
+
+	RETURN(rc);
 }
 
 void lod_fix_desc_stripe_size(__u64 *val)
 {
-	if (*val < LOV_DEFAULT_STRIPE_SIZE) {
-		LCONSOLE_WARN("Increasing default stripe size to min %u\n",
-			      LOV_DEFAULT_STRIPE_SIZE);
-		*val = LOV_DEFAULT_STRIPE_SIZE;
+	if (*val < LOV_MIN_STRIPE_SIZE) {
+		if (*val != 0)
+			LCONSOLE_INFO("Increasing default stripe size to "
+				      "minimum value %u\n",
+				      LOV_DESC_STRIPE_SIZE_DEFAULT);
+		*val = LOV_DESC_STRIPE_SIZE_DEFAULT;
 	} else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
 		*val &= ~(LOV_MIN_STRIPE_SIZE - 1);
 		LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
@@ -949,7 +1078,7 @@ void lod_fix_desc_qos_maxage(__u32 *val)
 {
 	/* fix qos_maxage */
 	if (*val == 0)
-		*val = QOS_DEFAULT_MAXAGE;
+		*val = LOV_DESC_QOS_MAXAGE_DEFAULT;
 }
 
 void lod_fix_desc(struct lov_desc *desc)
@@ -1013,11 +1142,6 @@ int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
 	lod->lod_qos.lq_prio_free = 232;
 	/* Default threshold for rr (roughly 17%) */
 	lod->lod_qos.lq_threshold_rr = 43;
-	/* Init statfs fields */
-	OBD_ALLOC_PTR(lod->lod_qos.lq_statfs_data);
-	if (NULL == lod->lod_qos.lq_statfs_data)
-		RETURN(-ENOMEM);
-	cfs_waitq_init(&lod->lod_qos.lq_statfs_waitq);
 
 	/* Set up OST pool environment */
 	lod->lod_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
@@ -1027,8 +1151,9 @@ int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
 						   CFS_HASH_MAX_THETA,
 						   &pool_hash_operations,
 						   CFS_HASH_DEFAULT);
-	if (!lod->lod_pools_hash_body)
-		GOTO(out_statfs, rc = -ENOMEM);
+	if (lod->lod_pools_hash_body == NULL)
+		RETURN(-ENOMEM);
+
 	CFS_INIT_LIST_HEAD(&lod->lod_pool_list);
 	lod->lod_pool_count = 0;
 	rc = lod_ost_pool_init(&lod->lod_pool_info, 0);
@@ -1044,8 +1169,7 @@ out_pool_info:
 	lod_ost_pool_free(&lod->lod_pool_info);
 out_hash:
 	cfs_hash_putref(lod->lod_pools_hash_body);
-out_statfs:
-	OBD_FREE_PTR(lod->lod_qos.lq_statfs_data);
+
 	return rc;
 }
 
@@ -1069,7 +1193,7 @@ int lod_pools_fini(struct lod_device *lod)
 	cfs_hash_putref(lod->lod_pools_hash_body);
 	lod_ost_pool_free(&(lod->lod_qos.lq_rr.lqr_pool));
 	lod_ost_pool_free(&lod->lod_pool_info);
-	OBD_FREE_PTR(lod->lod_qos.lq_statfs_data);
+
 	RETURN(0);
 }