* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* lustre/lod/lod_object.c
* local OSD object interface to the MDD layer, and abstracts the
* addressing of local (OSD) and remote (OSP) objects. The API is
* described in the file lustre/include/dt_object.h and in
- * lustre/doc/osd-api.txt.
+ * Documentation/osd-api.txt.
*
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
*/
#include <obd.h>
#include <obd_class.h>
-#include <lustre_ver.h>
#include <obd_support.h>
-#include <lprocfs_status.h>
#include <lustre_fid.h>
-#include <lustre_param.h>
-#include <lustre_fid.h>
+#include <lustre_linkea.h>
#include <lustre_lmv.h>
+#include <lustre_param.h>
+#include <lustre_swab.h>
+#include <lustre_ver.h>
+#include <lprocfs_status.h>
#include <md_object.h>
-#include <lustre_linkea.h>
#include "lod_internal.h"
static const char dotdot[] = "..";
static const struct dt_body_operations lod_body_lnk_ops;
+static const struct dt_body_operations lod_body_ops;
/**
* Implementation of dt_index_operations::dio_lookup
struct lod_object *lo = lod_dt_obj(it->lit_obj);
struct dt_object *next;
- LOD_CHECK_STRIPED_IT(env, it, lo);
+ /* If lit_it == NULL, then it means the sub_it has been finished,
+ * which only happens in failure cases, see lod_striped_it_next() */
+ if (it->lit_it != NULL) {
+ LOD_CHECK_STRIPED_IT(env, it, lo);
- next = lo->ldo_stripe[it->lit_stripe_index];
- LASSERT(next != NULL);
- LASSERT(next->do_index_ops != NULL);
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
+ LASSERT(next->do_index_ops != NULL);
- next->do_index_ops->dio_it.fini(env, it->lit_it);
+ next->do_index_ops->dio_it.fini(env, it->lit_it);
+ }
/* the iterator not in use any more */
it->lit_obj = NULL;
next->do_index_ops->dio_it.put(env, it->lit_it);
next->do_index_ops->dio_it.fini(env, it->lit_it);
+ it->lit_it = NULL;
+ next = lo->ldo_stripe[it->lit_stripe_index];
+ LASSERT(next != NULL);
rc = next->do_ops->do_index_try(env, next, &dt_directory_features);
if (rc != 0)
RETURN(rc);
- next = lo->ldo_stripe[it->lit_stripe_index];
- LASSERT(next != NULL);
LASSERT(next->do_index_ops != NULL);
it_next = next->do_index_ops->dio_it.init(env, next, it->lit_attr);
}
/**
- * Mark all of the striped directory sub-stripes dead.
- *
- * When a striped object is a subject to removal, we have
- * to mark all the stripes to prevent further access to
- * them (e.g. create a new file in those). So we mark
- * all the stripes with LMV_HASH_FLAG_DEAD. The function
- * can be used to declare the changes and to apply them.
- * If the object isn't striped, then just return success.
- *
- * \param[in] env execution environment
- * \param[in] dt the striped object
- * \param[in] handle transaction handle
- * \param[in] declare whether to declare the change or apply
- *
- * \retval 0 on success
- * \retval negative if failed
- **/
-static int lod_mark_dead_object(const struct lu_env *env,
- struct dt_object *dt,
- struct thandle *th,
- bool declare)
-{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lmv_mds_md_v1 *lmv;
- __u32 dead_hash_type;
- int rc;
- int i;
-
- ENTRY;
-
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(0);
-
- rc = lod_load_striping_locked(env, lo);
- if (rc != 0)
- RETURN(rc);
-
- if (lo->ldo_stripenr == 0)
- RETURN(0);
-
- rc = lod_get_lmv_ea(env, lo);
- if (rc <= 0)
- RETURN(rc);
-
- lmv = lod_env_info(env)->lti_ea_store;
- lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_STRIPE);
- dead_hash_type = le32_to_cpu(lmv->lmv_hash_type) | LMV_HASH_FLAG_DEAD;
- lmv->lmv_hash_type = cpu_to_le32(dead_hash_type);
- for (i = 0; i < lo->ldo_stripenr; i++) {
- struct lu_buf buf;
-
- lmv->lmv_master_mdt_index = i;
- buf.lb_buf = lmv;
- buf.lb_len = sizeof(*lmv);
- if (declare) {
- rc = lod_sub_object_declare_xattr_set(env,
- lo->ldo_stripe[i], &buf,
- XATTR_NAME_LMV,
- LU_XATTR_REPLACE, th);
- } else {
- rc = lod_sub_object_xattr_set(env, lo->ldo_stripe[i],
- &buf, XATTR_NAME_LMV,
- LU_XATTR_REPLACE, th);
- }
- if (rc != 0)
- break;
- }
-
- RETURN(rc);
-}
-
-/**
* Implementation of dt_object_operations::do_declare_attr_set.
*
* If the object is striped, then apply the changes to all the stripes.
int rc, i;
ENTRY;
- /* Set dead object on all other stripes */
- if (attr->la_valid & LA_FLAGS && !(attr->la_valid & ~LA_FLAGS) &&
- attr->la_flags & LUSTRE_SLAVE_DEAD_FL) {
- rc = lod_mark_dead_object(env, dt, th, true);
- RETURN(rc);
- }
-
/*
* declare setattr on the local object
*/
int rc, i;
ENTRY;
- /* Set dead object on all other stripes */
- if (attr->la_valid & LA_FLAGS && !(attr->la_valid & ~LA_FLAGS) &&
- attr->la_flags & LUSTRE_SLAVE_DEAD_FL) {
- rc = lod_mark_dead_object(env, dt, th, false);
- RETURN(rc);
- }
-
/*
* apply changes to the local object
*/
}
/**
- * Create a striped directory.
+ * Declare create a striped directory.
*
- * Create a striped directory with a given stripe pattern on the specified MDTs.
- * A striped directory is represented as a regular directory - an index listing
- * all the stripes. The stripes point back to the master object with ".." and
- * LinkEA. The master object gets LMV EA which identifies it as a striped
- * directory. The function allocates FIDs for all the stripes.
+ * Declare creating a striped directory with a given stripe pattern on the
+ * specified MDTs. A striped directory is represented as a regular directory
+ * - an index listing all the stripes. The stripes point back to the master
+ * object with ".." and LinkEA. The master object gets LMV EA which
+ * identifies it as a striped directory. The function allocates FIDs
+ * for all stripes.
*
* \param[in] env execution environment
* \param[in] dt object
* \param[in] attr attributes to initialize the objects with
- * \param[in] lum a pattern specifying the number of stripes and
- * MDT to start from
* \param[in] dof type of objects to be created
* \param[in] th transaction handle
*
PFID(lu_object_fid(&dto->do_lu)), i);
sname = lod_name_get(env, stripe_name, strlen(stripe_name));
- rc = linkea_data_new(&ldata, &info->lti_linkea_buf);
- if (rc != 0)
- GOTO(out, rc);
-
- rc = linkea_add_buf(&ldata, sname, lu_object_fid(&dt->do_lu));
+ rc = linkea_links_new(&ldata, &info->lti_linkea_buf,
+ sname, lu_object_fid(&dt->do_lu));
if (rc != 0)
GOTO(out, rc);
struct dt_object **stripe;
__u32 stripe_count;
int *idx_array;
+ __u32 master_index;
int rc = 0;
__u32 i;
__u32 j;
stripe_count = le32_to_cpu(lum->lum_stripe_count);
- /* shrink the stripe_count to the avaible MDT count */
- if (stripe_count > lod->lod_remote_mdt_count + 1)
- stripe_count = lod->lod_remote_mdt_count + 1;
+ OBD_ALLOC(idx_array, sizeof(idx_array[0]) * stripe_count);
+ if (idx_array == NULL)
+ RETURN(-ENOMEM);
OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_count);
if (stripe == NULL)
- RETURN(-ENOMEM);
-
- OBD_ALLOC(idx_array, sizeof(idx_array[0]) * stripe_count);
- if (idx_array == NULL)
GOTO(out_free, rc = -ENOMEM);
+ /* Start index will be the master MDT */
+ master_index = lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
+ idx_array[0] = master_index;
for (i = 0; i < stripe_count; i++) {
struct lod_tgt_desc *tgt = NULL;
struct dt_object *dto;
struct lu_object_conf conf = { 0 };
struct dt_device *tgt_dt = NULL;
- if (i == 0) {
- /* Right now, master stripe and master object are
- * on the same MDT */
- idx = lu_site2seq(lod2lu_dev(lod)->ld_site)->ss_node_id;
- rc = obd_fid_alloc(env, lod->lod_child_exp, &fid,
- NULL);
- if (rc < 0)
- GOTO(out_put, rc);
- tgt_dt = lod->lod_child;
- goto next;
- }
-
- idx = (idx_array[i - 1] + 1) % (lod->lod_remote_mdt_count + 1);
-
+ /* Try to find next avaible target */
+ idx = idx_array[i];
for (j = 0; j < lod->lod_remote_mdt_count;
j++, idx = (idx + 1) % (lod->lod_remote_mdt_count + 1)) {
bool already_allocated = false;
__u32 k;
- CDEBUG(D_INFO, "try idx %d, mdt cnt %u,"
- " allocated %u, last allocated %d\n", idx,
- lod->lod_remote_mdt_count, i, idx_array[i - 1]);
+ CDEBUG(D_INFO, "try idx %d, mdt cnt %u, allocated %u\n",
+ idx, lod->lod_remote_mdt_count + 1, i);
+ if (idx == master_index) {
+ /* Allocate the FID locally */
+ rc = obd_fid_alloc(env, lod->lod_child_exp,
+ &fid, NULL);
+ if (rc < 0)
+ GOTO(out_put, rc);
+ tgt_dt = lod->lod_child;
+ break;
+ }
/* Find next available target */
if (!cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx))
continue;
- /* check whether the idx already exists
- * in current allocated array */
- for (k = 0; k < i; k++) {
- if (idx_array[k] == idx) {
- already_allocated = true;
- break;
+ if (likely(!OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))) {
+ /* check whether the idx already exists
+ * in current allocated array */
+ for (k = 0; k < i; k++) {
+ if (idx_array[k] == idx) {
+ already_allocated = true;
+ break;
+ }
}
- }
- if (already_allocated)
- continue;
+ if (already_allocated)
+ continue;
+ }
/* check the status of the OSP */
tgt = LTD_TGT(ltd, idx);
break;
}
- CDEBUG(D_INFO, "idx %d, mdt cnt %u,"
- " allocated %u, last allocated %d\n", idx,
- lod->lod_remote_mdt_count, i, idx_array[i - 1]);
-
-next:
+ CDEBUG(D_INFO, "Get idx %d, for stripe %d "DFID"\n",
+ idx, i, PFID(&fid));
+ idx_array[i] = idx;
+ /* Set the start index for next stripe allocation */
+ if (i < stripe_count - 1)
+ idx_array[i + 1] = (idx + 1) %
+ (lod->lod_remote_mdt_count + 1);
/* tgt_dt and fid must be ready after search avaible OSP
* in the above loop */
LASSERT(tgt_dt != NULL);
if (IS_ERR(dto))
GOTO(out_put, rc = PTR_ERR(dto));
stripe[i] = dto;
- idx_array[i] = idx;
}
lo->ldo_dir_striped = 1;
}
out_free:
- if (idx_array != NULL)
- OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
+ OBD_FREE(idx_array, sizeof(idx_array[0]) * stripe_count);
RETURN(rc);
}
RETURN(rc);
}
-
/**
* Implementation of dt_object_operations::do_declare_xattr_set.
*
if (rc != 0)
RETURN(rc);
+ /* Note: Do not set LinkEA on sub-stripes, otherwise
+ * it will confuse the fid2path process(see mdt_path_current()).
+ * The linkEA between master and sub-stripes is set in
+ * lod_xattr_set_lmv(). */
+ if (strcmp(name, XATTR_NAME_LINK) == 0)
+ RETURN(0);
+
/* set xattr to each stripes, if needed */
rc = lod_load_striping(env, lo);
if (rc != 0)
RETURN(rc);
- /* Note: Do not set LinkEA on sub-stripes, otherwise
- * it will confuse the fid2path process(see mdt_path_current()).
- * The linkEA between master and sub-stripes is set in
- * lod_xattr_set_lmv(). */
- if (lo->ldo_stripenr == 0 || strcmp(name, XATTR_NAME_LINK) == 0)
+ if (lo->ldo_stripenr == 0)
RETURN(0);
for (i = 0; i < lo->ldo_stripenr; i++) {
}
/**
+ * Reset parent FID on OST object
+ *
+ * Replace parent FID with @dt object FID, which is only called during migration
+ * to reset the parent FID after the MDT object is migrated to the new MDT, i.e.
+ * the FID is changed.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt dt_object whose stripes's parent FID will be reset
+ * \parem[in] th thandle
+ * \param[in] declare if it is declare
+ *
+ * \retval 0 if reset succeeds
+ * \retval negative errno if reset fais
+ */
+static int lod_object_replace_parent_fid(const struct lu_env *env,
+ struct dt_object *dt,
+ struct thandle *th, bool declare)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lu_buf *buf = &info->lti_buf;
+ struct filter_fid *ff;
+ int i, rc;
+ ENTRY;
+
+ LASSERT(S_ISREG(dt->do_lu.lo_header->loh_attr));
+
+ /* set xattr to each stripes, if needed */
+ rc = lod_load_striping(env, lo);
+ if (rc != 0)
+ RETURN(rc);
+
+ if (lo->ldo_stripenr == 0)
+ RETURN(0);
+
+ if (info->lti_ea_store_size < sizeof(*ff)) {
+ rc = lod_ea_store_resize(info, sizeof(*ff));
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ buf->lb_buf = info->lti_ea_store;
+ buf->lb_len = info->lti_ea_store_size;
+
+ for (i = 0; i < lo->ldo_stripenr; i++) {
+ if (lo->ldo_stripe[i] == NULL)
+ continue;
+
+ rc = dt_xattr_get(env, lo->ldo_stripe[i], buf,
+ XATTR_NAME_FID);
+ if (rc < 0) {
+ rc = 0;
+ continue;
+ }
+
+ ff = buf->lb_buf;
+ fid_le_to_cpu(&ff->ff_parent, &ff->ff_parent);
+ ff->ff_parent.f_seq = lu_object_fid(&dt->do_lu)->f_seq;
+ ff->ff_parent.f_oid = lu_object_fid(&dt->do_lu)->f_oid;
+ fid_cpu_to_le(&ff->ff_parent, &ff->ff_parent);
+
+ if (declare) {
+ rc = lod_sub_object_declare_xattr_set(env,
+ lo->ldo_stripe[i], buf,
+ XATTR_NAME_FID,
+ LU_XATTR_REPLACE, th);
+ } else {
+ rc = lod_sub_object_xattr_set(env, lo->ldo_stripe[i],
+ buf, XATTR_NAME_FID,
+ LU_XATTR_REPLACE, th);
+ }
+ if (rc < 0)
+ break;
+ }
+
+ RETURN(rc);
+}
+
+/**
* Implementation of dt_object_operations::do_declare_xattr_set.
*
* \see dt_object_operations::do_declare_xattr_set() in the API description
rc = lod_declare_striped_object(env, dt, attr, buf, th);
} else if (S_ISDIR(mode)) {
rc = lod_dir_declare_xattr_set(env, dt, buf, name, fl, th);
+ } else if (strcmp(name, XATTR_NAME_FID) == 0) {
+ rc = lod_object_replace_parent_fid(env, dt, th, true);
} else {
rc = lod_sub_object_declare_xattr_set(env, next, buf, name,
fl, th);
}
/**
- * Resets cached default striping in the object.
- *
- * \param[in] lo object
- */
-static void lod_lov_stripe_cache_clear(struct lod_object *lo)
-{
- lo->ldo_def_striping_set = 0;
- lo->ldo_def_striping_cached = 0;
- lod_object_set_pool(lo, NULL);
- lo->ldo_def_stripe_size = 0;
- lo->ldo_def_stripenr = 0;
- if (lo->ldo_dir_stripe != NULL)
- lo->ldo_dir_def_striping_cached = 0;
-}
-
-/**
* Apply xattr changes to the object.
*
* Applies xattr changes to the object and the stripes if the latter exist.
static int lod_xattr_set_internal(const struct lu_env *env,
struct dt_object *dt,
const struct lu_buf *buf,
- const char *name, int fl, struct thandle *th)
+ const char *name, int fl,
+ struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
struct lod_object *lo = lod_dt_obj(dt);
struct thandle *th)
{
struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
- struct lod_object *l = lod_dt_obj(dt);
struct lov_user_md_v1 *lum;
struct lov_user_md_v3 *v3 = NULL;
const char *pool_name = NULL;
int rc;
ENTRY;
- /* If it is striped dir, we should clear the stripe cache for
- * slave stripe as well, but there are no effective way to
- * notify the LOD on the slave MDT, so we do not cache stripe
- * information for slave stripe for now. XXX*/
- lod_lov_stripe_cache_clear(l);
LASSERT(buf != NULL && buf->lb_buf != NULL);
lum = buf->lb_buf;
const char *name, int fl,
struct thandle *th)
{
- struct lod_object *l = lod_dt_obj(dt);
struct lmv_user_md_v1 *lum;
int rc;
ENTRY;
RETURN(rc);
}
- /* Update default stripe cache */
- if (l->ldo_dir_stripe == NULL) {
- OBD_ALLOC_PTR(l->ldo_dir_stripe);
- if (l->ldo_dir_stripe == NULL)
- RETURN(-ENOMEM);
- }
-
- l->ldo_dir_def_striping_cached = 0;
RETURN(rc);
}
PFID(lu_object_fid(&dto->do_lu)), i);
sname = lod_name_get(env, stripe_name, strlen(stripe_name));
- rc = linkea_data_new(&ldata, &info->lti_linkea_buf);
- if (rc != 0)
- GOTO(out, rc);
-
- rc = linkea_add_buf(&ldata, sname, lu_object_fid(&dt->do_lu));
+ rc = linkea_links_new(&ldata, &info->lti_linkea_buf,
+ sname, lu_object_fid(&dt->do_lu));
if (rc != 0)
GOTO(out, rc);
struct thandle *th,
bool declare)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_object *lo = lod_dt_obj(dt);
+ const struct lod_default_striping *lds = lo->ldo_def_striping;
+ const char *poolname = NULL;
+ int rc;
ENTRY;
+ LASSERT(ergo(lds != NULL,
+ lds->lds_def_striping_set ||
+ lds->lds_dir_def_striping_set));
+
if (!LMVEA_DELETE_VALUES(lo->ldo_stripenr,
lo->ldo_dir_stripe_offset)) {
struct lmv_user_md_v1 *v1 = info->lti_ea_store;
}
/* Transfer default LMV striping from the parent */
- if (lo->ldo_dir_def_striping_set &&
- !LMVEA_DELETE_VALUES(lo->ldo_dir_def_stripenr,
- lo->ldo_dir_def_stripe_offset)) {
+ if (lds != NULL && lds->lds_dir_def_striping_set &&
+ !LMVEA_DELETE_VALUES(lds->lds_dir_def_stripenr,
+ lds->lds_dir_def_stripe_offset)) {
struct lmv_user_md_v1 *v1 = info->lti_ea_store;
- int def_stripe_count = lo->ldo_dir_def_stripenr;
if (info->lti_ea_store_size < sizeof(*v1)) {
rc = lod_ea_store_resize(info, sizeof(*v1));
memset(v1, 0, sizeof(*v1));
v1->lum_magic = cpu_to_le32(LMV_USER_MAGIC);
- v1->lum_stripe_count = cpu_to_le32(def_stripe_count);
+ v1->lum_stripe_count = cpu_to_le32(lds->lds_dir_def_stripenr);
v1->lum_stripe_offset =
- cpu_to_le32(lo->ldo_dir_def_stripe_offset);
+ cpu_to_le32(lds->lds_dir_def_stripe_offset);
v1->lum_hash_type =
- cpu_to_le32(lo->ldo_dir_def_hash_type);
+ cpu_to_le32(lds->lds_dir_def_hash_type);
info->lti_buf.lb_buf = v1;
info->lti_buf.lb_len = sizeof(*v1);
RETURN(rc);
}
+ if (lds != NULL && lds->lds_def_pool[0] != '\0')
+ poolname = lds->lds_def_pool;
+
/* Transfer default LOV striping from the parent */
- if (lo->ldo_def_striping_set &&
- !LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size,
- lo->ldo_def_stripenr,
- lo->ldo_def_stripe_offset,
- lo->ldo_pool)) {
+ if (lds != NULL && lds->lds_def_striping_set &&
+ !LOVEA_DELETE_VALUES(lds->lds_def_stripe_size,
+ lds->lds_def_stripenr,
+ lds->lds_def_stripe_offset,
+ poolname)) {
struct lov_user_md_v3 *v3 = info->lti_ea_store;
if (info->lti_ea_store_size < sizeof(*v3)) {
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);
- 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,
+ v3->lmm_stripe_count = cpu_to_le16(lds->lds_def_stripenr);
+ v3->lmm_stripe_offset = cpu_to_le16(lds->lds_def_stripe_offset);
+ v3->lmm_stripe_size = cpu_to_le32(lds->lds_def_stripe_size);
+ if (poolname != NULL)
+ strlcpy(v3->lmm_pool_name, poolname,
sizeof(v3->lmm_pool_name));
info->lti_buf.lb_buf = v3;
struct dt_object_format *dof,
struct thandle *th)
{
- struct lod_object *lo = lod_dt_obj(dt);
- int rc;
-
- rc = lod_dir_striping_create_internal(env, dt, attr, dof, th, false);
- if (rc == 0)
- lo->ldo_striping_cached = 1;
-
- return rc;
+ return lod_dir_striping_create_internal(env, dt, attr, dof, th, false);
}
/**
rc = lod_striping_create(env, dt, NULL, NULL, th);
}
RETURN(rc);
+ } else if (strcmp(name, XATTR_NAME_FID) == 0) {
+ rc = lod_object_replace_parent_fid(env, dt, th, false);
+
+ RETURN(rc);
}
/* then all other xattr */
return dt_xattr_list(env, dt_object_child(dt), buf);
}
-/**
- * Initialize a pool the object belongs to.
- *
- * When a striped object is being created, striping configuration
- * may demand the stripes are allocated on a limited set of the
- * targets. These limited sets are known as "pools". So we copy
- * a pool name into the object and later actual creation methods
- * (like lod_object_create()) will use this information to allocate
- * the stripes properly.
- *
- * \param[in] o object
- * \param[in] pool pool name
- */
-int lod_object_set_pool(struct lod_object *o, char *pool)
-{
- int len;
-
- if (o->ldo_pool) {
- len = strlen(o->ldo_pool);
- OBD_FREE(o->ldo_pool, len + 1);
- o->ldo_pool = NULL;
- }
- if (pool) {
- len = strlen(pool);
- OBD_ALLOC(o->ldo_pool, len + 1);
- if (o->ldo_pool == NULL)
- return -ENOMEM;
- strcpy(o->ldo_pool, pool);
- }
- return 0;
-}
-
static inline int lod_object_will_be_striped(int is_reg, const struct lu_fid *fid)
{
return (is_reg && fid_seq(fid) != FID_SEQ_LOCAL_FILE);
/**
- * Cache default regular striping in the object.
- *
- * To improve performance of striped regular object creation we cache
- * default LOV striping (if it exists) in the parent directory object.
+ * Get default striping.
*
* \param[in] env execution environment
- * \param[in] lp object
+ * \param[in] lo object
+ * \param[out] lds default striping
*
* \retval 0 on success
* \retval negative if failed
*/
-static int lod_cache_parent_lov_striping(const struct lu_env *env,
- struct lod_object *lp)
+static int lod_get_default_lov_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds)
{
- struct lod_thread_info *info = lod_env_info(env);
- struct lov_user_md_v1 *v1 = NULL;
- struct lov_user_md_v3 *v3 = NULL;
- int rc;
- ENTRY;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lov_user_md_v1 *v1 = NULL;
+ struct lov_user_md_v3 *v3 = NULL;
+ int rc;
- /* called from MDD without parent being write locked,
- * lock it here */
- dt_write_lock(env, dt_object_child(&lp->ldo_obj), 0);
- rc = lod_get_lov_ea(env, lp);
+ rc = lod_get_lov_ea(env, lo);
if (rc < 0)
- GOTO(unlock, rc);
-
- if (rc < (typeof(rc))sizeof(struct lov_user_md)) {
- /* don't lookup for non-existing or invalid striping */
- lp->ldo_def_striping_set = 0;
- lp->ldo_def_striping_cached = 1;
- lp->ldo_def_stripe_size = 0;
- lp->ldo_def_stripenr = 0;
- lp->ldo_def_stripe_offset = (typeof(v1->lmm_stripe_offset))(-1);
- GOTO(unlock, rc = 0);
- }
+ return rc;
+
+ if (rc < (typeof(rc))sizeof(struct lov_user_md))
+ return 0;
- rc = 0;
v1 = info->lti_ea_store;
if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
lustre_swab_lov_user_md_v1(v1);
}
if (v1->lmm_magic != LOV_MAGIC_V3 && v1->lmm_magic != LOV_MAGIC_V1)
- GOTO(unlock, rc = 0);
+ return 0;
if (v1->lmm_pattern != LOV_PATTERN_RAID0 && v1->lmm_pattern != 0)
- GOTO(unlock, rc = 0);
-
- CDEBUG(D_INFO, DFID" stripe_count=%d stripe_size=%d stripe_offset=%d\n",
- PFID(lu_object_fid(&lp->ldo_obj.do_lu)),
- (int)v1->lmm_stripe_count,
- (int)v1->lmm_stripe_size, (int)v1->lmm_stripe_offset);
-
- lp->ldo_def_stripenr = v1->lmm_stripe_count;
- lp->ldo_def_stripe_size = v1->lmm_stripe_size;
- lp->ldo_def_stripe_offset = v1->lmm_stripe_offset;
- lp->ldo_def_striping_cached = 1;
- lp->ldo_def_striping_set = 1;
+ return 0;
+
+ lds->lds_def_stripenr = v1->lmm_stripe_count;
+ lds->lds_def_stripe_size = v1->lmm_stripe_size;
+ lds->lds_def_stripe_offset = v1->lmm_stripe_offset;
+ lds->lds_def_striping_set = 1;
if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
- /* XXX: sanity check here */
- v3 = (struct lov_user_md_v3 *) v1;
- if (v3->lmm_pool_name[0])
- lod_object_set_pool(lp, v3->lmm_pool_name);
+ v3 = (struct lov_user_md_v3 *)v1;
+ if (v3->lmm_pool_name[0] != '\0')
+ strlcpy(lds->lds_def_pool, v3->lmm_pool_name,
+ sizeof(lds->lds_def_pool));
}
- EXIT;
-unlock:
- dt_write_unlock(env, dt_object_child(&lp->ldo_obj));
- return rc;
-}
+ return 0;
+}
/**
- * Cache default directory striping in the object.
- *
- * To improve performance of striped directory creation we cache default
- * directory striping (if it exists) in the parent directory object.
+ * Get default directory striping.
*
* \param[in] env execution environment
- * \param[in] lp object
+ * \param[in] lo object
+ * \param[out] lds default striping
*
* \retval 0 on success
* \retval negative if failed
*/
-static int lod_cache_parent_lmv_striping(const struct lu_env *env,
- struct lod_object *lp)
+static int lod_get_default_lmv_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds)
{
struct lod_thread_info *info = lod_env_info(env);
struct lmv_user_md_v1 *v1 = NULL;
int rc;
- ENTRY;
- /* called from MDD without parent being write locked,
- * lock it here */
- dt_write_lock(env, dt_object_child(&lp->ldo_obj), 0);
- rc = lod_get_default_lmv_ea(env, lp);
+ rc = lod_get_default_lmv_ea(env, lo);
if (rc < 0)
- GOTO(unlock, rc);
-
- if (rc < (typeof(rc))sizeof(struct lmv_user_md)) {
- /* don't lookup for non-existing or invalid striping */
- lp->ldo_dir_def_striping_set = 0;
- lp->ldo_dir_def_striping_cached = 1;
- lp->ldo_dir_def_stripenr = 0;
- lp->ldo_dir_def_stripe_offset =
- (typeof(v1->lum_stripe_offset))(-1);
- lp->ldo_dir_def_hash_type = LMV_HASH_TYPE_FNV_1A_64;
- GOTO(unlock, rc = 0);
- }
+ return rc;
+
+ if (rc < (typeof(rc))sizeof(struct lmv_user_md))
+ return 0;
- rc = 0;
v1 = info->lti_ea_store;
- lp->ldo_dir_def_stripenr = le32_to_cpu(v1->lum_stripe_count);
- lp->ldo_dir_def_stripe_offset = le32_to_cpu(v1->lum_stripe_offset);
- lp->ldo_dir_def_hash_type = le32_to_cpu(v1->lum_hash_type);
- lp->ldo_dir_def_striping_set = 1;
- lp->ldo_dir_def_striping_cached = 1;
+ lds->lds_dir_def_stripenr = le32_to_cpu(v1->lum_stripe_count);
+ lds->lds_dir_def_stripe_offset = le32_to_cpu(v1->lum_stripe_offset);
+ lds->lds_dir_def_hash_type = le32_to_cpu(v1->lum_hash_type);
+ lds->lds_dir_def_striping_set = 1;
- EXIT;
-unlock:
- dt_write_unlock(env, dt_object_child(&lp->ldo_obj));
- return rc;
+ return 0;
}
/**
- * Cache default striping in the object.
+ * Get default striping in the object.
*
- * To improve performance of striped object creation we cache default striping
- * (if it exists) in the parent directory object. We always cache default
- * striping for the regular files (stored in LOV EA) and we cache default
- * striping for the directories if requested by \a child_mode (when a new
- * directory is being created).
+ * Get object default striping and default directory striping.
*
* \param[in] env execution environment
- * \param[in] lp object
- * \param[in] child_mode new object's mode
+ * \param[in] lo object
+ * \param[out] lds default striping
*
* \retval 0 on success
* \retval negative if failed
*/
-static int lod_cache_parent_striping(const struct lu_env *env,
- struct lod_object *lp,
- umode_t child_mode)
+static int lod_get_default_striping(const struct lu_env *env,
+ struct lod_object *lo,
+ struct lod_default_striping *lds)
{
- int rc = 0;
- ENTRY;
-
- if (!lp->ldo_def_striping_cached) {
- /* we haven't tried to get default striping for
- * the directory yet, let's cache it in the object */
- rc = lod_cache_parent_lov_striping(env, lp);
- if (rc != 0)
- RETURN(rc);
- }
+ int rc;
- /* If the parent is on the remote MDT, we should always
- * try to refresh the default stripeEA cache, because we
- * do not cache default striping information for remote
- * object. */
- if (S_ISDIR(child_mode) && (!lp->ldo_dir_def_striping_cached ||
- dt_object_remote(&lp->ldo_obj)))
- rc = lod_cache_parent_lmv_striping(env, lp);
+ rc = lod_get_default_lov_striping(env, lo, lds);
+ if (rc == 0)
+ rc = lod_get_default_lmv_striping(env, lo, lds);
+ return rc;
+}
- RETURN(rc);
+/**
+ * Apply default striping on object.
+ *
+ * If object striping pattern is not set, set to the one in default striping.
+ * The default striping is from parent or fs.
+ *
+ * \param[in] lo new object
+ * \param[in] lds default striping
+ * \param[in] mode new object's mode
+ */
+static void lod_striping_from_default(struct lod_object *lo,
+ const struct lod_default_striping *lds,
+ umode_t mode)
+{
+ if (lds->lds_def_striping_set && S_ISREG(mode)) {
+ if (lo->ldo_stripenr == 0)
+ lo->ldo_stripenr = lds->lds_def_stripenr;
+ if (lo->ldo_stripe_size == 0)
+ lo->ldo_stripe_size = lds->lds_def_stripe_size;
+ if (lo->ldo_stripe_offset == LOV_OFFSET_DEFAULT)
+ lo->ldo_stripe_offset = lds->lds_def_stripe_offset;
+ if (lo->ldo_pool == NULL && lds->lds_def_pool[0] != '\0')
+ lod_object_set_pool(lo, lds->lds_def_pool);
+
+ CDEBUG(D_INFO, "striping from default: count %hu, size %u, "
+ "offset %d, pool %s\n",
+ lo->ldo_stripenr, lo->ldo_stripe_size,
+ (int)lo->ldo_stripe_offset, lo->ldo_pool ?: "");
+ } else if (lds->lds_dir_def_striping_set && S_ISDIR(mode)) {
+ if (lo->ldo_stripenr == 0)
+ lo->ldo_stripenr = lds->lds_dir_def_stripenr;
+ if (lo->ldo_dir_stripe_offset == -1)
+ lo->ldo_dir_stripe_offset =
+ lds->lds_dir_def_stripe_offset;
+ if (lo->ldo_dir_hash_type == 0)
+ lo->ldo_dir_hash_type = lds->lds_dir_def_hash_type;
+
+ CDEBUG(D_INFO, "striping from default: count %hu, offset %d, "
+ "hash_type %u\n",
+ lo->ldo_stripenr, (int)lo->ldo_dir_stripe_offset,
+ lo->ldo_dir_hash_type);
+ }
}
/**
umode_t child_mode)
{
struct lod_device *d = lu2lod_dev(child->do_lu.lo_dev);
- struct dt_object *nextp = NULL;
- struct dt_object *nextc;
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_default_striping *lds = &info->lti_def_striping;
+ struct dt_object *nextp = NULL;
+ struct dt_object *nextc;
struct lod_object *lp = NULL;
struct lod_object *lc;
- struct lov_desc *desc;
- int rc;
+ struct lov_desc *desc;
ENTRY;
LASSERT(child);
if (likely(parent)) {
nextp = dt_object_child(parent);
lp = lod_dt_obj(parent);
- rc = lod_load_striping(env, lp);
- if (rc != 0)
- return;
}
nextc = dt_object_child(child);
LASSERT(lc->ldo_stripenr == 0);
LASSERT(lc->ldo_stripe == NULL);
- /*
- * local object may want some hints
- * in case of late striping creation, ->ah_init()
- * can be called with local object existing
- */
- if (!dt_object_exists(nextc) || dt_object_remote(nextc)) {
- struct dt_object *obj;
-
- obj = (nextp != NULL && dt_object_remote(nextp)) ? NULL : nextp;
- nextc->do_ops->do_ah_init(env, ah, obj, nextc, child_mode);
- }
+ if (!dt_object_exists(nextc))
+ nextc->do_ops->do_ah_init(env, ah, nextp, nextc, child_mode);
if (S_ISDIR(child_mode)) {
- if (lc->ldo_dir_stripe == NULL) {
- OBD_ALLOC_PTR(lc->ldo_dir_stripe);
- if (lc->ldo_dir_stripe == NULL)
- return;
- }
+ /* other default values are 0 */
+ lc->ldo_dir_stripe_offset = -1;
- LASSERT(lp != NULL);
- if (lp->ldo_dir_stripe == NULL) {
- OBD_ALLOC_PTR(lp->ldo_dir_stripe);
- if (lp->ldo_dir_stripe == NULL)
- return;
- }
+ memset(lds, 0, sizeof(*lds));
+ lod_get_default_striping(env, lp, lds);
- rc = lod_cache_parent_striping(env, lp, child_mode);
- if (rc != 0)
- return;
-
- /* transfer defaults to new directory */
- if (lp->ldo_def_striping_set) {
- if (lp->ldo_pool)
- lod_object_set_pool(lc, lp->ldo_pool);
- lc->ldo_def_stripenr = lp->ldo_def_stripenr;
- lc->ldo_def_stripe_size = lp->ldo_def_stripe_size;
- lc->ldo_def_stripe_offset = lp->ldo_def_stripe_offset;
- lc->ldo_def_striping_set = 1;
- lc->ldo_def_striping_cached = 1;
- CDEBUG(D_OTHER, "inherite EA sz:%d off:%d nr:%d\n",
- (int)lc->ldo_def_stripe_size,
- (int)lc->ldo_def_stripe_offset,
- (int)lc->ldo_def_stripenr);
- }
-
- /* transfer dir defaults to new directory */
- if (lp->ldo_dir_def_striping_set) {
- lc->ldo_dir_def_stripenr = lp->ldo_dir_def_stripenr;
- lc->ldo_dir_def_stripe_offset =
- lp->ldo_dir_def_stripe_offset;
- lc->ldo_dir_def_hash_type =
- lp->ldo_dir_def_hash_type;
- lc->ldo_dir_def_striping_set = 1;
- lc->ldo_dir_def_striping_cached = 1;
- CDEBUG(D_INFO, "inherit default EA nr:%d off:%d t%u\n",
- (int)lc->ldo_dir_def_stripenr,
- (int)lc->ldo_dir_def_stripe_offset,
- lc->ldo_dir_def_hash_type);
- }
+ /* inherit parent default striping */
+ if (lds->lds_def_striping_set || lds->lds_dir_def_striping_set)
+ lc->ldo_def_striping = lds;
/* It should always honour the specified stripes */
- if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0) {
+ if (ah->dah_eadata != NULL && ah->dah_eadata_len != 0 &&
+ lod_verify_md_striping(d, ah->dah_eadata) == 0) {
const struct lmv_user_md_v1 *lum1 = ah->dah_eadata;
- rc = lod_verify_md_striping(d, lum1);
- if (rc == 0 &&
- le32_to_cpu(lum1->lum_stripe_count) > 1) {
- /* Directory will be striped only if
- * stripe_count > 1 */
- lc->ldo_stripenr =
- le32_to_cpu(lum1->lum_stripe_count);
- lc->ldo_dir_stripe_offset =
- le32_to_cpu(lum1->lum_stripe_offset);
- lc->ldo_dir_hash_type =
- le32_to_cpu(lum1->lum_hash_type);
- CDEBUG(D_INFO, "set stripe EA nr:%hu off:%d\n",
- lc->ldo_stripenr,
- (int)lc->ldo_dir_stripe_offset);
- }
- /* then check whether there is default stripes from parent */
- } else if (lp->ldo_dir_def_striping_set) {
- /* If there are default dir stripe from parent */
- lc->ldo_stripenr = lp->ldo_dir_def_stripenr;
+ lc->ldo_stripenr = le32_to_cpu(lum1->lum_stripe_count);
lc->ldo_dir_stripe_offset =
- lp->ldo_dir_def_stripe_offset;
+ le32_to_cpu(lum1->lum_stripe_offset);
lc->ldo_dir_hash_type =
- lp->ldo_dir_def_hash_type;
- CDEBUG(D_INFO, "inherit EA nr:%hu off:%d\n",
- lc->ldo_stripenr,
- (int)lc->ldo_dir_stripe_offset);
+ le32_to_cpu(lum1->lum_hash_type);
+ CDEBUG(D_INFO, "set dir stripe: count %hu, offset %d, "
+ "hash_type %u\n",
+ lc->ldo_stripenr,
+ (int)lc->ldo_dir_stripe_offset,
+ lc->ldo_dir_hash_type);
} else {
- /* set default stripe for this directory */
- lc->ldo_stripenr = 0;
- lc->ldo_dir_stripe_offset = -1;
+ lod_striping_from_default(lc, lds, child_mode);
}
- CDEBUG(D_INFO, "final striping count:%hu, offset:%d\n",
- lc->ldo_stripenr, (int)lc->ldo_dir_stripe_offset);
+ /* shrink the stripe_count to the avaible MDT count */
+ if (lc->ldo_stripenr > d->lod_remote_mdt_count + 1 &&
+ !OBD_FAIL_CHECK(OBD_FAIL_LARGE_STRIPE))
+ lc->ldo_stripenr = d->lod_remote_mdt_count + 1;
+
+ /* Directory will be striped only if stripe_count > 1, if
+ * stripe_count == 1, let's reset stripenr = 0 to avoid
+ * create single master stripe and also help to unify the
+ * stripe handling of directories and files */
+ if (lc->ldo_stripenr == 1)
+ lc->ldo_stripenr = 0;
- goto out;
+ CDEBUG(D_INFO, "final dir stripe [%hu %d %u]\n",
+ lc->ldo_stripenr, (int)lc->ldo_dir_stripe_offset,
+ lc->ldo_dir_hash_type);
+
+ RETURN_EXIT;
}
/*
*/
if (!lod_object_will_be_striped(S_ISREG(child_mode),
lu_object_fid(&child->do_lu)))
- goto out;
- /*
- * try from the parent
- */
+ RETURN_EXIT;
+
+ /* other default values are 0 */
+ lc->ldo_stripe_offset = LOV_OFFSET_DEFAULT;
+
+ /* striping from parent default */
if (likely(parent)) {
- lod_cache_parent_striping(env, lp, child_mode);
-
- lc->ldo_def_stripe_offset = LOV_OFFSET_DEFAULT;
-
- if (lp->ldo_def_striping_set) {
- if (lp->ldo_pool)
- lod_object_set_pool(lc, lp->ldo_pool);
- lc->ldo_stripenr = lp->ldo_def_stripenr;
- lc->ldo_stripe_size = lp->ldo_def_stripe_size;
- lc->ldo_def_stripe_offset = lp->ldo_def_stripe_offset;
- CDEBUG(D_OTHER, "striping from parent: #%d, sz %d %s\n",
- lc->ldo_stripenr, lc->ldo_stripe_size,
- lp->ldo_pool ? lp->ldo_pool : "");
+ memset(lds, 0, sizeof(*lds));
+ lod_get_default_lov_striping(env, lp, lds);
+ lod_striping_from_default(lc, lds, child_mode);
+ }
+
+ if (d->lod_md_root == NULL) {
+ struct dt_object *root;
+ struct lod_object *lroot;
+
+ lu_root_fid(&info->lti_fid);
+ root = dt_locate(env, &d->lod_dt_dev, &info->lti_fid);
+ if (!IS_ERR(root)) {
+ lroot = lod_dt_obj(root);
+
+ spin_lock(&d->lod_lock);
+ if (d->lod_md_root != NULL)
+ lu_object_put(env,
+ &d->lod_md_root->ldo_obj.do_lu);
+ d->lod_md_root = lroot;
+ spin_unlock(&d->lod_lock);
}
}
+ /* if parent doesn't provide all defaults, striping from fs default */
+ if (d->lod_md_root != NULL &&
+ (lc->ldo_stripenr == 0 ||
+ lc->ldo_stripe_size == 0 ||
+ lc->ldo_stripe_offset == LOV_OFFSET_DEFAULT ||
+ lc->ldo_pool == NULL)) {
+ memset(lds, 0, sizeof(*lds));
+ lod_get_default_lov_striping(env, d->lod_md_root, lds);
+ lod_striping_from_default(lc, lds, child_mode);
+ }
+
/*
- * if the parent doesn't provide with specific pattern, grab fs-wide one
+ * fs default striping may not be explicitly set, or historically set
+ * in config log, check striping sanity here and fix to sane values.
*/
desc = &d->lod_desc;
if (lc->ldo_stripenr == 0)
lc->ldo_stripenr = desc->ld_default_stripe_count;
if (lc->ldo_stripe_size == 0)
lc->ldo_stripe_size = desc->ld_default_stripe_size;
- CDEBUG(D_OTHER, "final striping: # %d stripes, sz %d from %s\n",
- lc->ldo_stripenr, lc->ldo_stripe_size,
- lc->ldo_pool ? lc->ldo_pool : "");
-
-out:
- /* we do not cache stripe information for slave stripe, see
- * lod_xattr_set_lov_on_dir */
- if (lp != NULL && lp->ldo_dir_slave_stripe)
- lod_lov_stripe_cache_clear(lp);
+ CDEBUG(D_INFO, "final striping [%hu %u %d %s]\n",
+ lc->ldo_stripenr, lc->ldo_stripe_size,
+ (int)lc->ldo_stripe_offset, lc->ldo_pool ?: "");
EXIT;
}
LASSERT(lo->ldo_stripe || lo->ldo_stripenr == 0);
LASSERT(lo->ldo_stripe_size > 0);
+ if (lo->ldo_stripenr == 0)
+ RETURN(0);
+
rc = dt_attr_get(env, next, attr);
LASSERT(attr->la_valid & LA_SIZE);
if (rc)
int rc;
ENTRY;
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_ALLOC_OBDO)) {
- /* failed to create striping, let's reset
- * config so that others don't get confused */
- lod_object_free_striping(env, lo);
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_ALLOC_OBDO))
GOTO(out, rc = -ENOMEM);
- }
if (!dt_object_remote(next)) {
/* choose OST and generate appropriate objects */
rc = lod_qos_prep_create(env, lo, attr, lovea, th);
- if (rc) {
- /* failed to create striping, let's reset
- * config so that others don't get confused */
- lod_object_free_striping(env, lo);
+ if (rc)
GOTO(out, rc);
- }
/*
* declare storage for striping data
rc = lod_declare_init_size(env, dt, th);
out:
+ /* failed to create striping or to set initial size, let's reset
+ * config so that others don't get confused */
+ if (rc)
+ lod_object_free_striping(env, lo);
+
RETURN(rc);
}
if (dof->dof_type == DFT_SYM)
dt->do_body_ops = &lod_body_lnk_ops;
+ else if (dof->dof_type == DFT_REGULAR)
+ dt->do_body_ops = &lod_body_ops;
/*
* it's lod_ah_init() that has decided the object will be striped
* Note: if dah_eadata != NULL, it means creating the
* striped directory with specified stripeEA, then it
* should ignore the default stripeEA */
- if ((hint == NULL || hint->dah_eadata == NULL) &&
- lo->ldo_dir_stripe_offset != -1 &&
- lo->ldo_dir_stripe_offset != ss->ss_node_id)
- GOTO(out, rc = -EREMOTE);
-
- /* Orphan object (like migrating object) does not have
- * lod_dir_stripe, see lod_ah_init */
- if (lo->ldo_dir_stripe != NULL)
- rc = lod_declare_dir_striping_create(env, dt, attr,
- dof, th);
+ if (hint != NULL && hint->dah_eadata == NULL) {
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_STALE_DIR_LAYOUT))
+ GOTO(out, rc = -EREMOTE);
+
+ if (lo->ldo_dir_stripe_offset == -1) {
+ /* child and parent should be in the same MDT */
+ if (hint->dah_parent != NULL &&
+ dt_object_remote(hint->dah_parent))
+ GOTO(out, rc = -EREMOTE);
+ } else if (lo->ldo_dir_stripe_offset !=
+ ss->ss_node_id) {
+ struct lod_device *lod;
+ struct lod_tgt_descs *ltd;
+ struct lod_tgt_desc *tgt = NULL;
+ bool found_mdt = false;
+ int i;
+
+ lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
+ ltd = &lod->lod_mdt_descs;
+ cfs_foreach_bit(ltd->ltd_tgt_bitmap, i) {
+ tgt = LTD_TGT(ltd, i);
+ if (tgt->ltd_index ==
+ lo->ldo_dir_stripe_offset) {
+ found_mdt = true;
+ break;
+ }
+ }
+
+ /* If the MDT indicated by stripe_offset can be
+ * found, then tell client to resend the create
+ * request to the correct MDT, otherwise return
+ * error to client */
+ if (found_mdt)
+ GOTO(out, rc = -EREMOTE);
+ else
+ GOTO(out, rc = -EINVAL);
+ }
+ }
+
+ rc = lod_declare_dir_striping_create(env, dt, attr, dof, th);
}
out:
RETURN(rc);
int rc = 0, i;
ENTRY;
- LASSERT(lo->ldo_striping_cached == 0);
-
/* create all underlying objects */
for (i = 0; i < lo->ldo_stripenr; i++) {
LASSERT(lo->ldo_stripe[i]);
break;
}
- if (rc == 0) {
+ if (rc == 0)
rc = lod_generate_and_set_lovea(env, lo, th);
- if (rc == 0)
- lo->ldo_striping_cached = 1;
- }
RETURN(rc);
}
if (rc)
RETURN(rc);
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ) ||
+ OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ2))
RETURN(0);
/* declare destroy all striped objects */
if (rc != 0)
RETURN(rc);
- if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ) ||
+ OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ2))
RETURN(0);
/* destroy all striped objects */
return dt_object_sync(env, dt_object_child(dt), start, end);
}
-struct lod_slave_locks {
- int lsl_lock_count;
- struct lustre_handle lsl_handle[0];
-};
-
/**
* Release LDLM locks on the stripes of a striped directory.
*
* Iterates over all the locks taken on the stripe objects and
- * release them using ->do_object_unlock() method.
+ * cancel them.
*
* \param[in] env execution environment
* \param[in] dt striped object
static int lod_object_unlock_internal(const struct lu_env *env,
struct dt_object *dt,
struct ldlm_enqueue_info *einfo,
- ldlm_policy_data_t *policy)
+ union ldlm_policy_data *policy)
{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lod_slave_locks *slave_locks = einfo->ei_cbdata;
+ struct lustre_handle_array *slave_locks = einfo->ei_cbdata;
int rc = 0;
int i;
ENTRY;
if (slave_locks == NULL)
RETURN(0);
- for (i = 1; i < slave_locks->lsl_lock_count; i++) {
- if (lustre_handle_is_used(&slave_locks->lsl_handle[i])) {
- int rc1;
-
- einfo->ei_cbdata = &slave_locks->lsl_handle[i];
- rc1 = dt_object_unlock(env, lo->ldo_stripe[i], einfo,
- policy);
- if (rc1 < 0)
- rc = rc == 0 ? rc1 : rc;
- }
+ for (i = 1; i < slave_locks->count; i++) {
+ if (lustre_handle_is_used(&slave_locks->handles[i]))
+ ldlm_lock_decref_and_cancel(&slave_locks->handles[i],
+ einfo->ei_mode);
}
RETURN(rc);
struct ldlm_enqueue_info *einfo,
union ldlm_policy_data *policy)
{
- struct lod_object *lo = lod_dt_obj(dt);
- struct lod_slave_locks *slave_locks = einfo->ei_cbdata;
- int slave_locks_size;
- int rc;
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lustre_handle_array *slave_locks = einfo->ei_cbdata;
+ int slave_locks_size;
+ int i;
ENTRY;
if (slave_locks == NULL)
RETURN(0);
- if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(-ENOTDIR);
-
- rc = lod_load_striping(env, lo);
- if (rc != 0)
- RETURN(rc);
-
+ LASSERT(S_ISDIR(dt->do_lu.lo_header->loh_attr));
+ LASSERT(lo->ldo_stripenr > 1);
/* Note: for remote lock for single stripe dir, MDT will cancel
* the lock by lockh directly */
- if (lo->ldo_stripenr <= 1 && dt_object_remote(dt_object_child(dt)))
- RETURN(0);
+ LASSERT(!dt_object_remote(dt_object_child(dt)));
- /* Only cancel slave lock for striped dir */
- rc = lod_object_unlock_internal(env, dt, einfo, policy);
+ /* locks were unlocked in MDT layer */
+ for (i = 1; i < slave_locks->count; i++) {
+ LASSERT(!lustre_handle_is_used(&slave_locks->handles[i]));
+ dt_invalidate(env, lo->ldo_stripe[i]);
+ }
- slave_locks_size = sizeof(*slave_locks) + slave_locks->lsl_lock_count *
- sizeof(slave_locks->lsl_handle[0]);
+ slave_locks_size = sizeof(*slave_locks) + slave_locks->count *
+ sizeof(slave_locks->handles[0]);
OBD_FREE(slave_locks, slave_locks_size);
einfo->ei_cbdata = NULL;
- RETURN(rc);
+ RETURN(0);
}
/**
int rc = 0;
int i;
int slave_locks_size;
- struct lod_slave_locks *slave_locks = NULL;
+ struct lustre_handle_array *slave_locks = NULL;
ENTRY;
/* remote object lock */
}
if (!S_ISDIR(dt->do_lu.lo_header->loh_attr))
- RETURN(-ENOTDIR);
+ GOTO(out, rc = -ENOTDIR);
rc = lod_load_striping(env, lo);
if (rc != 0)
- RETURN(rc);
+ GOTO(out, rc);
/* No stripes */
- if (lo->ldo_stripenr <= 1)
- RETURN(0);
+ if (lo->ldo_stripenr <= 1) {
+ /*
+ * NB, ei_cbdata stores pointer to slave locks, if no locks
+ * taken, make sure it's set to NULL, otherwise MDT will try to
+ * unlock them.
+ */
+ einfo->ei_cbdata = NULL;
+ GOTO(out, rc = 0);
+ }
slave_locks_size = sizeof(*slave_locks) + lo->ldo_stripenr *
- sizeof(slave_locks->lsl_handle[0]);
+ sizeof(slave_locks->handles[0]);
/* Freed in lod_object_unlock */
OBD_ALLOC(slave_locks, slave_locks_size);
if (slave_locks == NULL)
- RETURN(-ENOMEM);
- slave_locks->lsl_lock_count = lo->ldo_stripenr;
+ GOTO(out, rc = -ENOMEM);
+ slave_locks->count = lo->ldo_stripenr;
/* striped directory lock */
for (i = 1; i < lo->ldo_stripenr; i++) {
res_id);
einfo->ei_res_id = res_id;
- LASSERT(lo->ldo_stripe[i]);
- rc = dt_object_lock(env, lo->ldo_stripe[i], &lockh, einfo,
- policy);
+ LASSERT(lo->ldo_stripe[i] != NULL);
+ if (likely(dt_object_remote(lo->ldo_stripe[i]))) {
+ rc = dt_object_lock(env, lo->ldo_stripe[i], &lockh,
+ einfo, policy);
+ } else {
+ struct ldlm_namespace *ns = einfo->ei_namespace;
+ ldlm_blocking_callback blocking = einfo->ei_cb_local_bl;
+ ldlm_completion_callback completion = einfo->ei_cb_cp;
+ __u64 dlmflags = LDLM_FL_ATOMIC_CB;
+
+ if (einfo->ei_mode == LCK_PW ||
+ einfo->ei_mode == LCK_EX)
+ dlmflags |= LDLM_FL_COS_INCOMPAT;
+
+ /* This only happens if there are mulitple stripes
+ * on the master MDT, i.e. except stripe0, there are
+ * other stripes on the Master MDT as well, Only
+ * happens in the test case right now. */
+ LASSERT(ns != NULL);
+ rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS,
+ policy, einfo->ei_mode,
+ &dlmflags, blocking,
+ completion, NULL,
+ NULL, 0, LVB_T_NONE,
+ NULL, &lockh);
+ }
if (rc != 0)
- GOTO(out, rc);
- slave_locks->lsl_handle[i] = lockh;
+ break;
+ slave_locks->handles[i] = lockh;
}
-
einfo->ei_cbdata = slave_locks;
-out:
if (rc != 0 && slave_locks != NULL) {
- einfo->ei_cbdata = slave_locks;
lod_object_unlock_internal(env, dt, einfo, policy);
OBD_FREE(slave_locks, slave_locks_size);
- einfo->ei_cbdata = NULL;
}
-
+ EXIT;
+out:
+ if (rc != 0)
+ einfo->ei_cbdata = NULL;
RETURN(rc);
}
+/**
+ * Implementation of dt_object_operations::do_invalidate.
+ *
+ * \see dt_object_operations::do_invalidate() in the API description for details
+ */
+static int lod_invalidate(const struct lu_env *env, struct dt_object *dt)
+{
+ return dt_invalidate(env, dt_object_child(dt));
+}
+
struct dt_object_operations lod_obj_ops = {
.do_read_lock = lod_object_read_lock,
.do_write_lock = lod_object_write_lock,
.do_object_sync = lod_object_sync,
.do_object_lock = lod_object_lock,
.do_object_unlock = lod_object_unlock,
+ .do_invalidate = lod_invalidate,
};
/**
return lod_sub_object_write(env, dt_object_child(dt), buf, pos, th, iq);
}
+static int lod_declare_punch(const struct lu_env *env, struct dt_object *dt,
+ __u64 start, __u64 end, struct thandle *th)
+{
+ if (dt_object_remote(dt))
+ return -ENOTSUPP;
+
+ return lod_sub_object_declare_punch(env, dt_object_child(dt), start,
+ end, th);
+}
+
+static int lod_punch(const struct lu_env *env, struct dt_object *dt,
+ __u64 start, __u64 end, struct thandle *th)
+{
+ if (dt_object_remote(dt))
+ return -ENOTSUPP;
+
+ return lod_sub_object_punch(env, dt_object_child(dt), start, end, th);
+}
+
static const struct dt_body_operations lod_body_lnk_ops = {
.dbo_read = lod_read,
.dbo_declare_write = lod_declare_write,
.dbo_write = lod_write
};
+static const struct dt_body_operations lod_body_ops = {
+ .dbo_read = lod_read,
+ .dbo_declare_write = lod_declare_write,
+ .dbo_write = lod_write,
+ .dbo_declare_punch = lod_declare_punch,
+ .dbo_punch = lod_punch,
+};
+
/**
* Implementation of lu_object_operations::loo_object_init.
*
*/
void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo)
{
- int i;
+ int len;
- if (lo->ldo_dir_stripe != NULL) {
- OBD_FREE_PTR(lo->ldo_dir_stripe);
- lo->ldo_dir_stripe = NULL;
- }
+ if (lo->ldo_stripe != NULL) {
+ int i;
- if (lo->ldo_stripe) {
LASSERT(lo->ldo_stripes_allocated > 0);
for (i = 0; i < lo->ldo_stripenr; i++) {
lu_object_put(env, &lo->ldo_stripe[i]->do_lu);
}
- i = sizeof(struct dt_object *) * lo->ldo_stripes_allocated;
- OBD_FREE(lo->ldo_stripe, i);
+ len = sizeof(struct dt_object *) * lo->ldo_stripes_allocated;
+ OBD_FREE(lo->ldo_stripe, len);
lo->ldo_stripe = NULL;
lo->ldo_stripes_allocated = 0;
}
- lo->ldo_striping_cached = 0;
lo->ldo_stripenr = 0;
- lo->ldo_pattern = 0;
}
/**
*/
static int lod_object_start(const struct lu_env *env, struct lu_object *o)
{
- if (S_ISLNK(o->lo_header->loh_attr & S_IFMT))
+ if (S_ISLNK(o->lo_header->loh_attr & S_IFMT)) {
lu2lod_obj(o)->ldo_obj.do_body_ops = &lod_body_lnk_ops;
+ } else if (S_ISREG(o->lo_header->loh_attr & S_IFMT) ||
+ fid_is_local_file(lu_object_fid(o))) {
+ /* Note: some local file (like last rcvd) is created
+ * through bottom layer (OSD), so the object initialization
+ * comes to lod, it does not set loh_attr yet, so
+ * set do_body_ops for local file anyway */
+ lu2lod_obj(o)->ldo_obj.do_body_ops = &lod_body_ops;
+ }
return 0;
}
*/
static void lod_object_free(const struct lu_env *env, struct lu_object *o)
{
- struct lod_object *mo = lu2lod_obj(o);
-
- /*
- * release all underlying object pinned
- */
-
- lod_object_free_striping(env, mo);
-
- lod_object_set_pool(mo, NULL);
+ struct lod_object *lo = lu2lod_obj(o);
+ lod_object_set_pool(lo, NULL);
+ /* release all underlying object pinned */
+ lod_object_free_striping(env, lo);
lu_object_fini(o);
- OBD_SLAB_FREE_PTR(mo, lod_object_kmem);
+ OBD_SLAB_FREE_PTR(lo, lod_object_kmem);
}
/**
git://git.whamcloud.com / fs / lustre-release.git / blobdiff