* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* lustre/lod/lod_object.c
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include <obd.h>
#include "lod_internal.h"
-extern cfs_mem_cache_t *lod_object_kmem;
+extern struct kmem_cache *lod_object_kmem;
static const struct dt_body_operations lod_body_lnk_ops;
static int lod_index_lookup(const struct lu_env *env, struct dt_object *dt,
struct dt_object *dt, __u32 attr,
struct lustre_capa *capa)
{
- struct dt_object *next = dt_object_child(dt);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_it *it = &lod_env_info(env)->lti_it;
+ struct dt_it *it_next;
+
+
+ it_next = next->do_index_ops->dio_it.init(env, next, attr, capa);
+ if (IS_ERR(it_next))
+ return it_next;
+
+ /* currently we do not use more than one iterator per thread
+ * so we store it in thread info. if at some point we need
+ * more active iterators in a single thread, we can allocate
+ * additional ones */
+ LASSERT(it->lit_obj == NULL);
+
+ it->lit_it = it_next;
+ it->lit_obj = next;
+
+ return (struct dt_it *)it;
+}
+
+#define LOD_CHECK_IT(env, it) \
+{ \
+ LASSERT((it)->lit_obj != NULL); \
+ LASSERT((it)->lit_it != NULL); \
+} while(0)
+
+void lod_it_fini(const struct lu_env *env, struct dt_it *di)
+{
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ it->lit_obj->do_index_ops->dio_it.fini(env, it->lit_it);
+
+ /* the iterator not in use any more */
+ it->lit_obj = NULL;
+ it->lit_it = NULL;
+}
+
+int lod_it_get(const struct lu_env *env, struct dt_it *di,
+ const struct dt_key *key)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.get(env, it->lit_it, key);
+}
+
+void lod_it_put(const struct lu_env *env, struct dt_it *di)
+{
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.put(env, it->lit_it);
+}
+
+int lod_it_next(const struct lu_env *env, struct dt_it *di)
+{
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.next(env, it->lit_it);
+}
+
+struct dt_key *lod_it_key(const struct lu_env *env, const struct dt_it *di)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.key(env, it->lit_it);
+}
+
+int lod_it_key_size(const struct lu_env *env, const struct dt_it *di)
+{
+ struct lod_it *it = (struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.key_size(env, it->lit_it);
+}
+
+int lod_it_rec(const struct lu_env *env, const struct dt_it *di,
+ struct dt_rec *rec, __u32 attr)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.rec(env, it->lit_it, rec, attr);
+}
+
+__u64 lod_it_store(const struct lu_env *env, const struct dt_it *di)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.store(env, it->lit_it);
+}
+
+int lod_it_load(const struct lu_env *env, const struct dt_it *di, __u64 hash)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.load(env, it->lit_it, hash);
+}
- return next->do_index_ops->dio_it.init(env, next, attr, capa);
+int lod_it_key_rec(const struct lu_env *env, const struct dt_it *di,
+ void* key_rec)
+{
+ const struct lod_it *it = (const struct lod_it *)di;
+
+ LOD_CHECK_IT(env, it);
+ return it->lit_obj->do_index_ops->dio_it.key_rec(env, it->lit_it, key_rec);
}
static struct dt_index_operations lod_index_ops = {
- .dio_lookup = lod_index_lookup,
- .dio_declare_insert = lod_declare_index_insert,
- .dio_insert = lod_index_insert,
- .dio_declare_delete = lod_declare_index_delete,
- .dio_delete = lod_index_delete,
- .dio_it = {
- .init = lod_it_init,
+ .dio_lookup = lod_index_lookup,
+ .dio_declare_insert = lod_declare_index_insert,
+ .dio_insert = lod_index_insert,
+ .dio_declare_delete = lod_declare_index_delete,
+ .dio_delete = lod_index_delete,
+ .dio_it = {
+ .init = lod_it_init,
+ .fini = lod_it_fini,
+ .get = lod_it_get,
+ .put = lod_it_put,
+ .next = lod_it_next,
+ .key = lod_it_key,
+ .key_size = lod_it_key_size,
+ .rec = lod_it_rec,
+ .store = lod_it_store,
+ .load = lod_it_load,
+ .key_rec = lod_it_key_rec,
}
};
if (rc)
RETURN(rc);
+ /* osp_declare_attr_set() ignores all attributes other than
+ * UID, GID, and size, and osp_attr_set() ignores all but UID
+ * and GID. Declaration of size attr setting happens through
+ * lod_declare_init_size(), and not through this function.
+ * Therefore we need not load striping unless ownership is
+ * changing. This should save memory and (we hope) speed up
+ * rename(). */
+ if (!(attr->la_valid & (LA_UID | LA_GID)))
+ RETURN(rc);
+
/*
* load striping information, notice we don't do this when object
* is being initialized as we don't need this information till
if (rc)
RETURN(rc);
+ if (!(attr->la_valid & (LA_UID | LA_GID)))
+ RETURN(rc);
+
/*
* if object is striped, apply changes to all the stripes
*/
struct lu_buf *buf, const char *name,
struct lustre_capa *capa)
{
- return dt_xattr_get(env, dt_object_child(dt), buf, name, capa);
+ struct lod_thread_info *info = lod_env_info(env);
+ struct lod_device *dev = lu2lod_dev(dt->do_lu.lo_dev);
+ int rc, is_root;
+ ENTRY;
+
+ rc = dt_xattr_get(env, dt_object_child(dt), buf, name, capa);
+ if (rc != -ENODATA || !S_ISDIR(dt->do_lu.lo_header->loh_attr & S_IFMT))
+ RETURN(rc);
+
+ /*
+ * lod returns default striping on the real root of the device
+ * this is like the root stores default striping for the whole
+ * filesystem. historically we've been using a different approach
+ * and store it in the config.
+ */
+ dt_root_get(env, dev->lod_child, &info->lti_fid);
+ is_root = lu_fid_eq(&info->lti_fid, lu_object_fid(&dt->do_lu));
+
+ if (is_root && strcmp(XATTR_NAME_LOV, name) == 0) {
+ struct lov_user_md *lum = buf->lb_buf;
+ struct lov_desc *desc = &dev->lod_desc;
+
+ if (buf->lb_buf == NULL) {
+ rc = sizeof(*lum);
+ } else if (buf->lb_len >= sizeof(*lum)) {
+ lum->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V1);
+ lmm_oi_set_seq(&lum->lmm_oi, FID_SEQ_LOV_DEFAULT);
+ lmm_oi_set_id(&lum->lmm_oi, 0);
+ lmm_oi_cpu_to_le(&lum->lmm_oi, &lum->lmm_oi);
+ lum->lmm_pattern = cpu_to_le32(desc->ld_pattern);
+ lum->lmm_stripe_size = cpu_to_le32(
+ desc->ld_default_stripe_size);
+ lum->lmm_stripe_count = cpu_to_le16(
+ desc->ld_default_stripe_count);
+ lum->lmm_stripe_offset = cpu_to_le16(
+ desc->ld_default_stripe_offset);
+ rc = sizeof(*lum);
+ } else {
+ rc = -ERANGE;
+ }
+ }
+
+ RETURN(rc);
}
/*
struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ __u32 mode;
int rc;
ENTRY;
+ /*
+ * allow to declare predefined striping on a new (!mode) object
+ * which is supposed to be replay of regular file creation
+ * (when LOV setting is declared)
+ * LU_XATTR_REPLACE is set to indicate a layout swap
+ */
+ mode = dt->do_lu.lo_header->loh_attr & S_IFMT;
+ if ((S_ISREG(mode) || !mode) && !strcmp(name, XATTR_NAME_LOV) &&
+ !(fl & LU_XATTR_REPLACE)) {
+ /*
+ * this is a request to manipulate object's striping
+ */
+ if (dt_object_exists(dt)) {
+ rc = dt_attr_get(env, next, attr, BYPASS_CAPA);
+ if (rc)
+ RETURN(rc);
+ } else {
+ memset(attr, 0, sizeof(*attr));
+ attr->la_valid = LA_TYPE | LA_MODE;
+ attr->la_mode = S_IFREG;
+ }
+ rc = lod_declare_striped_object(env, dt, attr, buf, th);
+ if (rc)
+ RETURN(rc);
+ }
+
rc = dt_declare_xattr_set(env, next, buf, name, fl, th);
RETURN(rc);
}
+static int lod_xattr_set_lov_on_dir(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct lu_buf *buf,
+ const char *name, int fl,
+ struct thandle *th,
+ struct lustre_capa *capa)
+{
+ struct lod_device *d = lu2lod_dev(dt->do_lu.lo_dev);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *l = lod_dt_obj(dt);
+ struct lov_user_md_v1 *lum;
+ struct lov_user_md_v3 *v3 = NULL;
+ int rc;
+ ENTRY;
+
+ LASSERT(l->ldo_stripe == NULL);
+ l->ldo_striping_cached = 0;
+ l->ldo_def_striping_set = 0;
+ lod_object_set_pool(l, NULL);
+ l->ldo_def_stripe_size = 0;
+ l->ldo_def_stripenr = 0;
+
+ LASSERT(buf != NULL && buf->lb_buf != NULL);
+ lum = buf->lb_buf;
+
+ rc = lod_verify_striping(d, buf, 0);
+ if (rc)
+ RETURN(rc);
+
+ if (lum->lmm_magic == LOV_USER_MAGIC_V3)
+ v3 = buf->lb_buf;
+
+ /* if { size, offset, count } = { 0, -1, 0 } and no pool
+ * (i.e. all default values specified) then delete default
+ * striping from dir. */
+ CDEBUG(D_OTHER,
+ "set default striping: sz %u # %u offset %d %s %s\n",
+ (unsigned)lum->lmm_stripe_size,
+ (unsigned)lum->lmm_stripe_count,
+ (int)lum->lmm_stripe_offset,
+ v3 ? "from" : "", v3 ? v3->lmm_pool_name : "");
+
+ if (LOVEA_DELETE_VALUES((lum->lmm_stripe_size),
+ (lum->lmm_stripe_count),
+ (lum->lmm_stripe_offset)) &&
+ lum->lmm_magic == LOV_USER_MAGIC_V1) {
+ rc = dt_xattr_del(env, next, name, th, capa);
+ if (rc == -ENODATA)
+ rc = 0;
+ } else {
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ }
+
+ RETURN(rc);
+}
+
static int lod_xattr_set(const struct lu_env *env,
struct dt_object *dt, const struct lu_buf *buf,
const char *name, int fl, struct thandle *th,
struct lustre_capa *capa)
{
- struct dt_object *next = dt_object_child(dt);
- int rc;
+ struct dt_object *next = dt_object_child(dt);
+ __u32 attr;
+ int rc;
ENTRY;
- /*
- * behave transparantly for all other EAs
- */
- rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ attr = dt->do_lu.lo_header->loh_attr & S_IFMT;
+ if (S_ISDIR(attr)) {
+ if (strncmp(name, XATTR_NAME_LOV, strlen(XATTR_NAME_LOV)) == 0)
+ rc = lod_xattr_set_lov_on_dir(env, dt, buf, name,
+ fl, th, capa);
+ else
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+
+ } else if (S_ISREG(attr) && !strcmp(name, XATTR_NAME_LOV)) {
+ /* in case of lov EA swap, just set it
+ * if not, it is a replay so check striping match what we
+ * already have during req replay, declare_xattr_set()
+ * defines striping, then create() does the work
+ */
+ if (fl & LU_XATTR_REPLACE) {
+ /* free stripes, then update disk */
+ lod_object_free_striping(env, lod_dt_obj(dt));
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ } else {
+ rc = lod_striping_create(env, dt, NULL, NULL, th);
+ }
+ RETURN(rc);
+ } else {
+ /*
+ * behave transparantly for all other EAs
+ */
+ rc = dt_xattr_set(env, next, buf, name, fl, th, capa);
+ }
RETURN(rc);
}
const char *name, struct thandle *th,
struct lustre_capa *capa)
{
+ if (!strcmp(name, XATTR_NAME_LOV))
+ lod_object_free_striping(env, lod_dt_obj(dt));
return dt_xattr_del(env, dt_object_child(dt), name, th, capa);
}
struct dt_allocation_hint *ah,
struct dt_object *parent,
struct dt_object *child,
- cfs_umode_t child_mode)
+ umode_t child_mode)
{
struct lod_device *d = lu2lod_dev(child->do_lu.lo_dev);
struct dt_object *nextp = NULL;
* in case of late striping creation, ->ah_init()
* can be called with local object existing
*/
- if (!dt_object_exists(nextc))
- nextc->do_ops->do_ah_init(env, ah, nextp, nextc, child_mode);
+ if (!dt_object_exists(nextc) || dt_object_remote(nextc))
+ nextc->do_ops->do_ah_init(env, ah, dt_object_remote(nextp) ?
+ NULL : nextp, nextc, child_mode);
if (S_ISDIR(child_mode)) {
if (lp->ldo_striping_cached == 0) {
lc->ldo_def_stripe_offset = lp->ldo_def_stripe_offset;
lc->ldo_striping_cached = 1;
lc->ldo_def_striping_set = 1;
- CDEBUG(D_OTHER, "inherite striping defaults\n");
+ CDEBUG(D_OTHER, "inherite EA sz:%d off:%d nr:%d\n",
+ (int)lc->ldo_def_stripenr,
+ (int)lc->ldo_def_stripe_size,
+ (int)lc->ldo_def_stripe_offset);
}
return;
}
EXIT;
}
+#define ll_do_div64(aaa,bbb) do_div((aaa), (bbb))
+/*
+ * this function handles a special case when truncate was done
+ * on a stripeless object and now striping is being created
+ * we can't lose that size, so we have to propagate it to newly
+ * created object
+ */
+static int lod_declare_init_size(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
+{
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ struct lu_attr *attr = &lod_env_info(env)->lti_attr;
+ uint64_t size, offs;
+ int rc, stripe;
+ ENTRY;
+
+ /* XXX: we support the simplest (RAID0) striping so far */
+ LASSERT(lo->ldo_stripe || lo->ldo_stripenr == 0);
+ LASSERT(lo->ldo_stripe_size > 0);
+
+ rc = dt_attr_get(env, next, attr, BYPASS_CAPA);
+ LASSERT(attr->la_valid & LA_SIZE);
+ if (rc)
+ RETURN(rc);
+
+ size = attr->la_size;
+ if (size == 0)
+ RETURN(0);
+
+ /* ll_do_div64(a, b) returns a % b, and a = a / b */
+ ll_do_div64(size, (__u64) lo->ldo_stripe_size);
+ stripe = ll_do_div64(size, (__u64) lo->ldo_stripenr);
+
+ size = size * lo->ldo_stripe_size;
+ offs = attr->la_size;
+ size += ll_do_div64(offs, lo->ldo_stripe_size);
+
+ attr->la_valid = LA_SIZE;
+ attr->la_size = size;
+
+ rc = dt_declare_attr_set(env, lo->ldo_stripe[stripe], attr, th);
+
+ RETURN(rc);
+}
+
+
+/**
+ * Create declaration of striped object
+ */
+int lod_declare_striped_object(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr,
+ const struct lu_buf *lovea, struct thandle *th)
+{
+ struct lod_thread_info *info = lod_env_info(env);
+ struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
+ 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);
+ GOTO(out, rc = -ENOMEM);
+ }
+
+ /* 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);
+ GOTO(out, rc);
+ }
+
+ /*
+ * declare storage for striping data
+ */
+ info->lti_buf.lb_len = lov_mds_md_size(lo->ldo_stripenr,
+ lo->ldo_pool ? LOV_MAGIC_V3 : LOV_MAGIC_V1);
+ rc = dt_declare_xattr_set(env, next, &info->lti_buf, XATTR_NAME_LOV,
+ 0, th);
+ if (rc)
+ GOTO(out, rc);
+
+ /*
+ * if striping is created with local object's size > 0,
+ * we have to propagate this size to specific object
+ * the case is possible only when local object was created previously
+ */
+ if (dt_object_exists(next))
+ rc = lod_declare_init_size(env, dt, th);
+
+out:
+ RETURN(rc);
+}
+
static int lod_declare_object_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
int rc;
ENTRY;
LASSERT(dof);
LASSERT(attr);
LASSERT(th);
- LASSERT(!dt_object_exists(next));
/*
* first of all, we declare creation of local object
if (dof->dof_type == DFT_SYM)
dt->do_body_ops = &lod_body_lnk_ops;
+ /*
+ * it's lod_ah_init() who has decided the object will striped
+ */
+ if (dof->dof_type == DFT_REGULAR) {
+ /* callers don't want stripes */
+ /* XXX: all tricky interactions with ->ah_make_hint() decided
+ * to use striping, then ->declare_create() behaving differently
+ * should be cleaned */
+ if (dof->u.dof_reg.striped == 0)
+ lo->ldo_stripenr = 0;
+ if (lo->ldo_stripenr > 0)
+ rc = lod_declare_striped_object(env, dt, attr,
+ NULL, th);
+ } else if (dof->dof_type == DFT_DIR && lo->ldo_striping_cached) {
+ struct lod_thread_info *info = lod_env_info(env);
+
+ struct lov_user_md_v3 *v3;
+
+ if (LOVEA_DELETE_VALUES(lo->ldo_def_stripe_size,
+ lo->ldo_def_stripenr,
+ lo->ldo_def_stripe_offset))
+ RETURN(0);
+
+ 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);
+ fid_to_lmm_oi(lu_object_fid(&dt->do_lu), &v3->lmm_oi);
+ lmm_oi_cpu_to_le(&v3->lmm_oi, &v3->lmm_oi);
+ v3->lmm_stripe_size = cpu_to_le32(lo->ldo_def_stripe_size);
+ v3->lmm_stripe_count = cpu_to_le32(lo->ldo_def_stripenr);
+ v3->lmm_stripe_offset = cpu_to_le16(lo->ldo_def_stripe_offset);
+ if (lo->ldo_pool)
+ strncpy(v3->lmm_pool_name, lo->ldo_pool,
+ LOV_MAXPOOLNAME);
+
+ info->lti_buf.lb_buf = v3;
+ info->lti_buf.lb_len = sizeof(*v3);
+
+ /* to transfer default striping from the parent */
+ rc = dt_declare_xattr_set(env, next, &info->lti_buf,
+ XATTR_NAME_LOV, 0, th);
+ OBD_FREE_PTR(v3);
+ }
+
out:
RETURN(rc);
}
+int lod_striping_create(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr, struct dt_object_format *dof,
+ struct thandle *th)
+{
+ struct lod_object *lo = lod_dt_obj(dt);
+ 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]);
+ rc = dt_create(env, lo->ldo_stripe[i], attr, NULL, dof, th);
+
+ if (rc)
+ break;
+ }
+ if (rc == 0)
+ rc = lod_generate_and_set_lovea(env, lo, th);
+
+ RETURN(rc);
+}
+
static int lod_object_create(const struct lu_env *env, struct dt_object *dt,
struct lu_attr *attr,
struct dt_allocation_hint *hint,
struct dt_object_format *dof, struct thandle *th)
{
struct dt_object *next = dt_object_child(dt);
+ struct lod_object *lo = lod_dt_obj(dt);
int rc;
ENTRY;
/* create local object */
rc = dt_create(env, next, attr, hint, dof, th);
+ if (rc == 0) {
+ if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
+ rc = lod_store_def_striping(env, dt, th);
+ else if (lo->ldo_stripe)
+ rc = lod_striping_create(env, dt, attr, dof, th);
+ }
+
RETURN(rc);
}
LASSERT(next->do_ops->do_index_try);
rc = next->do_ops->do_index_try(env, next, feat);
- if (next->do_index_ops && dt->do_index_ops == NULL) {
+ if (next->do_index_ops && dt->do_index_ops == NULL)
dt->do_index_ops = &lod_index_ops;
- /* XXX: iterators don't accept device, so bypass LOD */
- /* will be fixed with DNE */
- if (lod_index_ops.dio_it.fini == NULL) {
- lod_index_ops.dio_it = next->do_index_ops->dio_it;
- lod_index_ops.dio_it.init = lod_it_init;
- }
- }
RETURN(rc);
}
return dt_object_sync(env, dt_object_child(dt));
}
+static int lod_object_lock(const struct lu_env *env,
+ struct dt_object *dt, struct lustre_handle *lh,
+ struct ldlm_enqueue_info *einfo,
+ void *policy)
+{
+ struct dt_object *next = dt_object_child(dt);
+ int rc;
+ ENTRY;
+
+ /*
+ * declare setattr on the local object
+ */
+ rc = dt_object_lock(env, next, lh, einfo, policy);
+
+ RETURN(rc);
+}
+
struct dt_object_operations lod_obj_ops = {
.do_read_lock = lod_object_read_lock,
.do_write_lock = lod_object_write_lock,
.do_ref_del = lod_ref_del,
.do_capa_get = lod_capa_get,
.do_object_sync = lod_object_sync,
+ .do_object_lock = lod_object_lock,
};
static ssize_t lod_read(const struct lu_env *env, struct dt_object *dt,
lo->ldo_stripes_allocated = 0;
}
lo->ldo_stripenr = 0;
+ lo->ldo_pattern = 0;
}
/*
.loo_object_release = lod_object_release,
.loo_object_print = lod_object_print,
};
+
+/**
+ * Init remote lod object
+ */
+static int lod_robject_init(const struct lu_env *env, struct lu_object *lo,
+ const struct lu_object_conf *conf)
+{
+ struct lod_device *lod = lu2lod_dev(lo->lo_dev);
+ struct lod_tgt_descs *ltd = &lod->lod_mdt_descs;
+ struct lu_device *c_dev = NULL;
+ struct lu_object *c_obj;
+ int i;
+ ENTRY;
+
+ lod_getref(ltd);
+ if (ltd->ltd_tgts_size > 0) {
+ cfs_foreach_bit(ltd->ltd_tgt_bitmap, i) {
+ struct lod_tgt_desc *tgt;
+ tgt = LTD_TGT(ltd, i);
+ LASSERT(tgt && tgt->ltd_tgt);
+ if (tgt->ltd_index ==
+ lu2lod_obj(lo)->ldo_mds_num) {
+ c_dev = &(tgt->ltd_tgt->dd_lu_dev);
+ break;
+ }
+ }
+ }
+ lod_putref(lod, ltd);
+
+ if (unlikely(c_dev == NULL))
+ RETURN(-ENOENT);
+
+ c_obj = c_dev->ld_ops->ldo_object_alloc(env, lo->lo_header, c_dev);
+ if (unlikely(c_obj == NULL))
+ RETURN(-ENOMEM);
+
+ lu_object_add(lo, c_obj);
+
+ RETURN(0);
+}
+
+struct lu_object_operations lod_lu_robj_ops = {
+ .loo_object_init = lod_robject_init,
+ .loo_object_start = lod_object_start,
+ .loo_object_free = lod_object_free,
+ .loo_object_release = lod_object_release,
+ .loo_object_print = lod_object_print,
+};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff