* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2014, Intel Corporation.
*/
/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
* lustre/osp/osp_object.c
*
- * Lustre OST Proxy Device
+ * Lustre OST Proxy Device (OSP) is the agent on the local MDT for the OST
+ * or remote MDT.
+ *
+ * OSP object attributes cache
+ * ---------------------------
+ * OSP object is the stub of the remote OST-object or MDT-object. Both the
+ * attribute and the extended attributes are stored on the peer side remotely.
+ * It is inefficient to send RPC to peer to fetch those attributes when every
+ * get_attr()/get_xattr() called. For a large system, the LFSCK synchronous
+ * mode scanning is prohibitively inefficient.
+ *
+ * So the OSP maintains the OSP object attributes cache to cache some
+ * attributes on the local MDT. The cache is organized against the OSP
+ * object as follows:
+ *
+ * struct osp_xattr_entry {
+ * struct list_head oxe_list;
+ * atomic_t oxe_ref;
+ * void *oxe_value;
+ * int oxe_buflen;
+ * int oxe_namelen;
+ * int oxe_vallen;
+ * unsigned int oxe_exist:1,
+ * oxe_ready:1;
+ * char oxe_buf[0];
+ * };
+ *
+ * struct osp_object_attr {
+ * struct lu_attr ooa_attr;
+ * struct list_head ooa_xattr_list;
+ * };
+ *
+ * struct osp_object {
+ * ...
+ * struct osp_object_attr *opo_ooa;
+ * spinlock_t opo_lock;
+ * ...
+ * };
+ *
+ * The basic attributes, such as owner/mode/flags, are stored in the
+ * osp_object_attr::ooa_attr. The extended attributes will be stored
+ * as osp_xattr_entry. Every extended attribute has an independent
+ * osp_xattr_entry, and all the osp_xattr_entry are linked into the
+ * osp_object_attr::ooa_xattr_list. The OSP object attributes cache
+ * is protected by the osp_object::opo_lock.
+ *
+ * Not all OSP objects have an attributes cache because maintaining
+ * the cache requires some resources. Currently, the OSP object
+ * attributes cache will be initialized when the attributes or the
+ * extended attributes are pre-fetched via osp_declare_attr_get()
+ * or osp_declare_xattr_get(). That is usually for LFSCK purpose,
+ * but it also can be shared by others.
*
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
* Author: Mikhail Pershin <mike.tappro@intel.com>
#include "osp_internal.h"
+static inline __u32 osp_dev2node(struct osp_device *osp)
+{
+ return osp->opd_storage->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
+}
+
+static inline bool is_ost_obj(struct lu_object *lo)
+{
+ return !lu2osp_dev(lo->lo_dev)->opd_connect_mdt;
+}
+
+/**
+ * Assign FID to the OST object.
+ *
+ * This function will assign the FID to the OST object of a striped file.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] d pointer to the OSP device
+ * \param[in] o pointer to the OSP object that the FID will be
+ * assigned to
+ */
static void osp_object_assign_fid(const struct lu_env *env,
- struct osp_device *d, struct osp_object *o)
+ struct osp_device *d, struct osp_object *o)
{
struct osp_thread_info *osi = osp_env_info(env);
lu_object_assign_fid(env, &o->opo_obj.do_lu, &osi->osi_fid);
}
-static int osp_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
- const struct lu_attr *attr, struct thandle *th)
+/**
+ * Initialize the OSP object attributes cache.
+ *
+ * \param[in] obj pointer to the OSP object
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_oac_init(struct osp_object *obj)
+{
+ struct osp_object_attr *ooa;
+
+ OBD_ALLOC_PTR(ooa);
+ if (ooa == NULL)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&ooa->ooa_xattr_list);
+ spin_lock(&obj->opo_lock);
+ if (likely(obj->opo_ooa == NULL)) {
+ obj->opo_ooa = ooa;
+ spin_unlock(&obj->opo_lock);
+ } else {
+ spin_unlock(&obj->opo_lock);
+ OBD_FREE_PTR(ooa);
+ }
+
+ return 0;
+}
+
+/**
+ * Find the named extended attribute in the OSP object attributes cache.
+ *
+ * The caller should take the osp_object::opo_lock before calling
+ * this function.
+ *
+ * \param[in] ooa pointer to the OSP object attributes cache
+ * \param[in] name the name of the extended attribute
+ * \param[in] namelen the name length of the extended attribute
+ *
+ * \retval pointer to the found extended attribute entry
+ * \retval NULL if the specified extended attribute is not
+ * in the cache
+ */
+static struct osp_xattr_entry *
+osp_oac_xattr_find_locked(struct osp_object_attr *ooa,
+ const char *name, size_t namelen)
+{
+ struct osp_xattr_entry *oxe;
+
+ list_for_each_entry(oxe, &ooa->ooa_xattr_list, oxe_list) {
+ if (namelen == oxe->oxe_namelen &&
+ strncmp(name, oxe->oxe_buf, namelen) == 0)
+ return oxe;
+ }
+
+ return NULL;
+}
+
+/**
+ * Find the named extended attribute in the OSP object attributes cache.
+ *
+ * Call osp_oac_xattr_find_locked() with the osp_object::opo_lock held.
+ *
+ * \param[in] obj pointer to the OSP object
+ * \param[in] name the name of the extended attribute
+ * \param[in] unlink true if the extended attribute entry is to be removed
+ * from the cache
+ *
+ * \retval pointer to the found extended attribute entry
+ * \retval NULL if the specified extended attribute is not
+ * in the cache
+ */
+static struct osp_xattr_entry *osp_oac_xattr_find(struct osp_object *obj,
+ const char *name, bool unlink)
+{
+ struct osp_xattr_entry *oxe = NULL;
+
+ spin_lock(&obj->opo_lock);
+ if (obj->opo_ooa != NULL) {
+ oxe = osp_oac_xattr_find_locked(obj->opo_ooa, name,
+ strlen(name));
+ if (oxe != NULL) {
+ if (unlink)
+ list_del_init(&oxe->oxe_list);
+ else
+ atomic_inc(&oxe->oxe_ref);
+ }
+ }
+ spin_unlock(&obj->opo_lock);
+
+ return oxe;
+}
+
+/**
+ * Find the named extended attribute in the OSP object attributes cache.
+ *
+ * If it is not in the cache, then add an empty entry (that will be
+ * filled later) to cache with the given name.
+ *
+ * \param[in] obj pointer to the OSP object
+ * \param[in] name the name of the extended attribute
+ * \param[in] len the length of the extended attribute value
+ *
+ * \retval pointer to the found or new-created extended
+ * attribute entry
+ * \retval NULL if the specified extended attribute is not in the
+ * cache or fail to add new empty entry to the cache.
+ */
+static struct osp_xattr_entry *
+osp_oac_xattr_find_or_add(struct osp_object *obj, const char *name, size_t len)
+{
+ struct osp_object_attr *ooa = obj->opo_ooa;
+ struct osp_xattr_entry *oxe;
+ struct osp_xattr_entry *tmp = NULL;
+ size_t namelen = strlen(name);
+ size_t size = sizeof(*oxe) + namelen + 1 + len;
+
+ LASSERT(ooa != NULL);
+
+ oxe = osp_oac_xattr_find(obj, name, false);
+ if (oxe != NULL)
+ return oxe;
+
+ OBD_ALLOC(oxe, size);
+ if (unlikely(oxe == NULL))
+ return NULL;
+
+ INIT_LIST_HEAD(&oxe->oxe_list);
+ oxe->oxe_buflen = size;
+ oxe->oxe_namelen = namelen;
+ memcpy(oxe->oxe_buf, name, namelen);
+ oxe->oxe_value = oxe->oxe_buf + namelen + 1;
+ /* One ref is for the caller, the other is for the entry on the list. */
+ atomic_set(&oxe->oxe_ref, 2);
+
+ spin_lock(&obj->opo_lock);
+ tmp = osp_oac_xattr_find_locked(ooa, name, namelen);
+ if (tmp == NULL)
+ list_add_tail(&oxe->oxe_list, &ooa->ooa_xattr_list);
+ else
+ atomic_inc(&tmp->oxe_ref);
+ spin_unlock(&obj->opo_lock);
+
+ if (tmp != NULL) {
+ OBD_FREE(oxe, size);
+ oxe = tmp;
+ }
+
+ return oxe;
+}
+
+/**
+ * Add the given extended attribute to the OSP object attributes cache.
+ *
+ * If there is an old extended attributed entry with the same name,
+ * remove it from the cache and return it via the parameter \a poxe.
+ *
+ * \param[in] obj pointer to the OSP object
+ * \param[in,out] poxe double pointer to the OSP object extended attribute
+ * entry: the new extended attribute entry is transfered
+ * via such pointer target, and if old the extended
+ * attribute entry exists, then it will be returned back
+ * via such pointer target.
+ * \param[in] len the length of the (new) extended attribute value
+ *
+ * \retval pointer to the new extended attribute entry
+ * \retval NULL for failure cases.
+ */
+static struct osp_xattr_entry *
+osp_oac_xattr_replace(struct osp_object *obj,
+ struct osp_xattr_entry **poxe, size_t len)
+{
+ struct osp_object_attr *ooa = obj->opo_ooa;
+ struct osp_xattr_entry *oxe;
+ size_t namelen = (*poxe)->oxe_namelen;
+ size_t size = sizeof(*oxe) + namelen + 1 + len;
+
+ LASSERT(ooa != NULL);
+
+ OBD_ALLOC(oxe, size);
+ if (unlikely(oxe == NULL))
+ return NULL;
+
+ INIT_LIST_HEAD(&oxe->oxe_list);
+ oxe->oxe_buflen = size;
+ oxe->oxe_namelen = namelen;
+ memcpy(oxe->oxe_buf, (*poxe)->oxe_buf, namelen);
+ oxe->oxe_value = oxe->oxe_buf + namelen + 1;
+ /* One ref is for the caller, the other is for the entry on the list. */
+ atomic_set(&oxe->oxe_ref, 2);
+
+ spin_lock(&obj->opo_lock);
+ *poxe = osp_oac_xattr_find_locked(ooa, oxe->oxe_buf, namelen);
+ LASSERT(*poxe != NULL);
+
+ list_del_init(&(*poxe)->oxe_list);
+ list_add_tail(&oxe->oxe_list, &ooa->ooa_xattr_list);
+ spin_unlock(&obj->opo_lock);
+
+ return oxe;
+}
+
+/**
+ * Release reference from the OSP object extended attribute entry.
+ *
+ * If it is the last reference, then free the entry.
+ *
+ * \param[in] oxe pointer to the OSP object extended attribute entry.
+ */
+static inline void osp_oac_xattr_put(struct osp_xattr_entry *oxe)
+{
+ if (atomic_dec_and_test(&oxe->oxe_ref)) {
+ LASSERT(list_empty(&oxe->oxe_list));
+
+ OBD_FREE(oxe, oxe->oxe_buflen);
+ }
+}
+
+/**
+ * Parse the OSP object attribute from the RPC reply.
+ *
+ * If the attribute is valid, then it will be added to the OSP object
+ * attributes cache.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] reply pointer to the RPC reply
+ * \param[in] req pointer to the RPC request
+ * \param[out] attr pointer to buffer to hold the output attribute
+ * \param[in] obj pointer to the OSP object
+ * \param[in] index the index of the attribute buffer in the reply
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_get_attr_from_reply(const struct lu_env *env,
+ struct object_update_reply *reply,
+ struct ptlrpc_request *req,
+ struct lu_attr *attr,
+ struct osp_object *obj, int index)
+{
+ struct osp_thread_info *osi = osp_env_info(env);
+ struct lu_buf *rbuf = &osi->osi_lb2;
+ struct obdo *lobdo = &osi->osi_obdo;
+ struct obdo *wobdo;
+ int rc;
+
+ rc = object_update_result_data_get(reply, rbuf, index);
+ if (rc < 0)
+ return rc;
+
+ wobdo = rbuf->lb_buf;
+ if (rbuf->lb_len != sizeof(*wobdo))
+ return -EPROTO;
+
+ LASSERT(req != NULL);
+ if (ptlrpc_req_need_swab(req))
+ lustre_swab_obdo(wobdo);
+
+ lustre_get_wire_obdo(NULL, lobdo, wobdo);
+ spin_lock(&obj->opo_lock);
+ if (obj->opo_ooa != NULL) {
+ la_from_obdo(&obj->opo_ooa->ooa_attr, lobdo, lobdo->o_valid);
+ if (attr != NULL)
+ *attr = obj->opo_ooa->ooa_attr;
+ } else {
+ LASSERT(attr != NULL);
+
+ la_from_obdo(attr, lobdo, lobdo->o_valid);
+ }
+ spin_unlock(&obj->opo_lock);
+
+ return 0;
+}
+
+/**
+ * Interpreter function for getting OSP object attribute asynchronously.
+ *
+ * Called to interpret the result of an async mode RPC for getting the
+ * OSP object attribute.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] reply pointer to the RPC reply
+ * \param[in] req pointer to the RPC request
+ * \param[in] obj pointer to the OSP object
+ * \param[out] data pointer to buffer to hold the output attribute
+ * \param[in] index the index of the attribute buffer in the reply
+ * \param[in] rc the result for handling the RPC
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_attr_get_interpterer(const struct lu_env *env,
+ struct object_update_reply *reply,
+ struct ptlrpc_request *req,
+ struct osp_object *obj,
+ void *data, int index, int rc)
+{
+ struct lu_attr *attr = data;
+
+ LASSERT(obj->opo_ooa != NULL);
+
+ if (rc == 0) {
+ osp2lu_obj(obj)->lo_header->loh_attr |= LOHA_EXISTS;
+ obj->opo_non_exist = 0;
+
+ return osp_get_attr_from_reply(env, reply, req, NULL, obj,
+ index);
+ } else {
+ if (rc == -ENOENT) {
+ osp2lu_obj(obj)->lo_header->loh_attr &= ~LOHA_EXISTS;
+ obj->opo_non_exist = 1;
+ }
+
+ spin_lock(&obj->opo_lock);
+ attr->la_valid = 0;
+ spin_unlock(&obj->opo_lock);
+ }
+
+ return 0;
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_declare_attr_get() interface.
+ *
+ * Declare that the caller will get attribute from the specified OST object.
+ *
+ * This function adds an Object Unified Target (OUT) sub-request to the per-OSP
+ * based shared asynchronous request queue. The osp_attr_get_interpterer()
+ * is registered as the interpreter function to handle the result of this
+ * sub-request.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_declare_attr_get(const struct lu_env *env, struct dt_object *dt,
+ struct lustre_capa *capa)
+{
+ struct osp_object *obj = dt2osp_obj(dt);
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+ int rc = 0;
+
+ if (obj->opo_ooa == NULL) {
+ rc = osp_oac_init(obj);
+ if (rc != 0)
+ return rc;
+ }
+
+ mutex_lock(&osp->opd_async_requests_mutex);
+ rc = osp_insert_async_request(env, OUT_ATTR_GET, obj, 0, NULL, NULL,
+ &obj->opo_ooa->ooa_attr,
+ osp_attr_get_interpterer);
+ mutex_unlock(&osp->opd_async_requests_mutex);
+
+ return rc;
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_attr_get() interface.
+ *
+ * Get attribute from the specified MDT/OST object.
+ *
+ * If the attribute is in the OSP object attributes cache, then return
+ * the cached attribute directly. Otherwise it will trigger an OUT RPC
+ * to the peer to get the attribute synchronously, if successful, add it
+ * to the OSP attributes cache. (\see lustre/osp/osp_trans.c for OUT RPC.)
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[out] attr pointer to the buffer to hold the output attribute
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
+ struct lu_attr *attr, struct lustre_capa *capa)
+{
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+ struct osp_object *obj = dt2osp_obj(dt);
+ struct dt_device *dev = &osp->opd_dt_dev;
+ struct dt_update_request *update;
+ struct object_update_reply *reply;
+ struct ptlrpc_request *req = NULL;
+ int rc = 0;
+ ENTRY;
+
+ if (is_ost_obj(&dt->do_lu) && obj->opo_non_exist)
+ RETURN(-ENOENT);
+
+ if (obj->opo_ooa != NULL) {
+ spin_lock(&obj->opo_lock);
+ if (obj->opo_ooa->ooa_attr.la_valid != 0) {
+ *attr = obj->opo_ooa->ooa_attr;
+ spin_unlock(&obj->opo_lock);
+
+ RETURN(0);
+ }
+ spin_unlock(&obj->opo_lock);
+ }
+
+ update = dt_update_request_create(dev);
+ if (IS_ERR(update))
+ RETURN(PTR_ERR(update));
+
+ rc = out_attr_get_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu));
+ if (rc != 0) {
+ CERROR("%s: Insert update error "DFID": rc = %d\n",
+ dev->dd_lu_dev.ld_obd->obd_name,
+ PFID(lu_object_fid(&dt->do_lu)), rc);
+
+ GOTO(out, rc);
+ }
+
+ rc = out_remote_sync(env, osp->opd_obd->u.cli.cl_import, update, &req);
+ if (rc != 0) {
+ if (rc == -ENOENT) {
+ osp2lu_obj(obj)->lo_header->loh_attr &= ~LOHA_EXISTS;
+ obj->opo_non_exist = 1;
+ } else {
+ CERROR("%s:osp_attr_get update error "DFID": rc = %d\n",
+ dev->dd_lu_dev.ld_obd->obd_name,
+ PFID(lu_object_fid(&dt->do_lu)), rc);
+ }
+
+ GOTO(out, rc);
+ }
+
+ osp2lu_obj(obj)->lo_header->loh_attr |= LOHA_EXISTS;
+ obj->opo_non_exist = 0;
+ reply = req_capsule_server_sized_get(&req->rq_pill,
+ &RMF_OUT_UPDATE_REPLY,
+ OUT_UPDATE_REPLY_SIZE);
+ if (reply == NULL || reply->ourp_magic != UPDATE_REPLY_MAGIC)
+ GOTO(out, rc = -EPROTO);
+
+ rc = osp_get_attr_from_reply(env, reply, req, attr, obj, 0);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ GOTO(out, rc = 0);
+
+out:
+ if (req != NULL)
+ ptlrpc_req_finished(req);
+
+ dt_update_request_destroy(update);
+
+ return rc;
+}
+
+static int __osp_attr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_attr *attr, struct thandle *th)
{
struct osp_device *d = lu2osp_dev(dt->do_lu.lo_dev);
struct osp_object *o = dt2osp_obj(dt);
+ struct lu_attr *la;
int rc = 0;
-
ENTRY;
/*
* Usually we don't allow server stack to manipulate size
* but there is a special case when striping is created
- * late, after stripless file got truncated to non-zero.
+ * late, after stripeless file got truncated to non-zero.
*
* In this case we do the following:
*
* 2) send synchronous truncate RPC with just assigned id
*/
- /* there are few places in MDD code still passing NULL
- * XXX: to be fixed soon */
- if (attr == NULL)
- RETURN(0);
+ /* there are few places in MDD code still passing NULL
+ * XXX: to be fixed soon */
+ if (attr == NULL)
+ RETURN(0);
+
+ if (attr->la_valid & LA_SIZE && attr->la_size > 0 &&
+ fid_is_zero(lu_object_fid(&o->opo_obj.do_lu))) {
+ LASSERT(!dt_object_exists(dt));
+ osp_object_assign_fid(env, d, o);
+ rc = osp_object_truncate(env, dt, attr->la_size);
+ if (rc)
+ RETURN(rc);
+ }
+
+ if (o->opo_new)
+ /* no need in logging for new objects being created */
+ RETURN(0);
+
+ if (!(attr->la_valid & (LA_UID | LA_GID)))
+ RETURN(0);
+
+ if (!is_only_remote_trans(th))
+ /*
+ * track all UID/GID changes via llog
+ */
+ rc = osp_sync_declare_add(env, o, MDS_SETATTR64_REC, th);
+ else
+ /* It is for OST-object attr_set directly without updating
+ * local MDT-object attribute. It is usually used by LFSCK. */
+ rc = osp_md_declare_attr_set(env, dt, attr, th);
+
+ if (rc != 0 || o->opo_ooa == NULL)
+ RETURN(rc);
+
+ /* Update the OSP object attributes cache. */
+ la = &o->opo_ooa->ooa_attr;
+ spin_lock(&o->opo_lock);
+ if (attr->la_valid & LA_UID) {
+ la->la_uid = attr->la_uid;
+ la->la_valid |= LA_UID;
+ }
+
+ if (attr->la_valid & LA_GID) {
+ la->la_gid = attr->la_gid;
+ la->la_valid |= LA_GID;
+ }
+ spin_unlock(&o->opo_lock);
+
+ RETURN(0);
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_declare_attr_set() interface.
+ * XXX: NOT prepare set_{attr,xattr} RPC for remote transaction.
+ *
+ * According to our current transaction/dt_object_lock framework (to make
+ * the cross-MDTs modification for DNE1 to be workable), the transaction
+ * sponsor will start the transaction firstly, then try to acquire related
+ * dt_object_lock if needed. Under such rules, if we want to prepare the
+ * set_{attr,xattr} RPC in the RPC declare phase, then related attr/xattr
+ * should be known without dt_object_lock. But such condition maybe not
+ * true for some remote transaction case. For example:
+ *
+ * For linkEA repairing (by LFSCK) case, before the LFSCK thread obtained
+ * the dt_object_lock on the target MDT-object, it cannot know whether
+ * the MDT-object has linkEA or not, neither invalid or not.
+ *
+ * Since the LFSCK thread cannot hold dt_object_lock before the (remote)
+ * transaction start (otherwise there will be some potential deadlock),
+ * it cannot prepare related RPC for repairing during the declare phase
+ * as other normal transactions do.
+ *
+ * To resolve the trouble, we will make OSP to prepare related RPC
+ * (set_attr/set_xattr/del_xattr) after remote transaction started,
+ * and trigger the remote updating (RPC sending) when trans_stop.
+ * Then the up layer users, such as LFSCK, can follow the general
+ * rule to handle trans_start/dt_object_lock for repairing linkEA
+ * inconsistency without distinguishing remote MDT-object.
+ *
+ * In fact, above solution for remote transaction should be the normal
+ * model without considering DNE1. The trouble brought by DNE1 will be
+ * resolved in DNE2. At that time, this patch can be removed.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] attr pointer to the attribute to be set
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_attr *attr, struct thandle *th)
+{
+ int rc = 0;
+
+ if (!is_only_remote_trans(th))
+ rc = __osp_attr_set(env, dt, attr, th);
+
+ return rc;
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_attr_set() interface.
+ *
+ * Set attribute to the specified OST object.
+ *
+ * If the transaction is a remote transaction, then related modification
+ * sub-request has been added in the declare phase and related OUT RPC
+ * has been triggered at transaction start. Otherwise it will generate
+ * a MDS_SETATTR64_REC record in the llog. There is a dedicated thread
+ * to handle the llog asynchronously.
+ *
+ * If the attribute entry exists in the OSP object attributes cache,
+ * then update the cached attribute according to given attribute.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] attr pointer to the attribute to be set
+ * \param[in] th pointer to the transaction handler
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_attr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_attr *attr, struct thandle *th,
+ struct lustre_capa *capa)
+{
+ struct osp_object *o = dt2osp_obj(dt);
+ int rc = 0;
+ ENTRY;
+
+ if (is_only_remote_trans(th)) {
+ rc = __osp_attr_set(env, dt, attr, th);
+ if (rc != 0)
+ RETURN(rc);
+ }
+
+ /* we're interested in uid/gid changes only */
+ if (!(attr->la_valid & (LA_UID | LA_GID)))
+ RETURN(0);
+
+ /* new object, the very first ->attr_set()
+ * initializing attributes needs no logging
+ * all subsequent one are subject to the
+ * logging and synchronization with OST */
+ if (o->opo_new) {
+ o->opo_new = 0;
+ RETURN(0);
+ }
+
+ if (!is_only_remote_trans(th))
+ /*
+ * once transaction is committed put proper command on
+ * the queue going to our OST
+ */
+ rc = osp_sync_add(env, o, MDS_SETATTR64_REC, th, attr);
+ /* XXX: send new uid/gid to OST ASAP? */
+ else
+ /* It is for OST-object attr_set directly without updating
+ * local MDT-object attribute. It is usually used by LFSCK. */
+ rc = osp_md_attr_set(env, dt, attr, th, capa);
+
+ RETURN(rc);
+}
+
+/**
+ * Interpreter function for getting OSP object extended attribute asynchronously
+ *
+ * Called to interpret the result of an async mode RPC for getting the
+ * OSP object extended attribute.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] reply pointer to the RPC reply
+ * \param[in] req pointer to the RPC request
+ * \param[in] obj pointer to the OSP object
+ * \param[out] data pointer to OSP object attributes cache
+ * \param[in] index the index of the attribute buffer in the reply
+ * \param[in] rc the result for handling the RPC
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_xattr_get_interpterer(const struct lu_env *env,
+ struct object_update_reply *reply,
+ struct ptlrpc_request *req,
+ struct osp_object *obj,
+ void *data, int index, int rc)
+{
+ struct osp_object_attr *ooa = obj->opo_ooa;
+ struct osp_xattr_entry *oxe = data;
+ struct lu_buf *rbuf = &osp_env_info(env)->osi_lb2;
+
+ LASSERT(ooa != NULL);
+
+ if (rc == 0) {
+ size_t len = sizeof(*oxe) + oxe->oxe_namelen + 1;
+
+ rc = object_update_result_data_get(reply, rbuf, index);
+ if (rc < 0 || rbuf->lb_len > (oxe->oxe_buflen - len)) {
+ spin_lock(&obj->opo_lock);
+ oxe->oxe_ready = 0;
+ spin_unlock(&obj->opo_lock);
+ osp_oac_xattr_put(oxe);
+
+ return rc < 0 ? rc : -ERANGE;
+ }
+
+ spin_lock(&obj->opo_lock);
+ oxe->oxe_vallen = rbuf->lb_len;
+ memcpy(oxe->oxe_value, rbuf->lb_buf, rbuf->lb_len);
+ oxe->oxe_exist = 1;
+ oxe->oxe_ready = 1;
+ spin_unlock(&obj->opo_lock);
+ } else if (rc == -ENOENT || rc == -ENODATA) {
+ spin_lock(&obj->opo_lock);
+ oxe->oxe_exist = 0;
+ oxe->oxe_ready = 1;
+ spin_unlock(&obj->opo_lock);
+ } else {
+ spin_lock(&obj->opo_lock);
+ oxe->oxe_ready = 0;
+ spin_unlock(&obj->opo_lock);
+ }
+
+ osp_oac_xattr_put(oxe);
+
+ return 0;
+}
+
+/**
+ * Implement OSP dt_object_operations::do_declare_xattr_get() interface.
+ *
+ * Declare that the caller will get extended attribute from the specified
+ * OST object.
+ *
+ * This function will add an OUT_XATTR_GET sub-request to the per OSP
+ * based shared asynchronous request queue with the interpreter function:
+ * osp_xattr_get_interpterer().
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[out] buf pointer to the lu_buf to hold the extended attribute
+ * \param[in] name the name for the expected extended attribute
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_declare_xattr_get(const struct lu_env *env, struct dt_object *dt,
+ struct lu_buf *buf, const char *name,
+ struct lustre_capa *capa)
+{
+ struct osp_object *obj = dt2osp_obj(dt);
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+ struct osp_xattr_entry *oxe;
+ __u16 namelen = strlen(name);
+ int rc = 0;
+
+ LASSERT(buf != NULL);
+ LASSERT(name != NULL);
+
+ /* If only for xattr size, return directly. */
+ if (unlikely(buf->lb_len == 0))
+ return 0;
+
+ if (obj->opo_ooa == NULL) {
+ rc = osp_oac_init(obj);
+ if (rc != 0)
+ return rc;
+ }
+
+ oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
+ if (oxe == NULL)
+ return -ENOMEM;
+
+ mutex_lock(&osp->opd_async_requests_mutex);
+ rc = osp_insert_async_request(env, OUT_XATTR_GET, obj, 1,
+ &namelen, (const void **)&name, oxe,
+ osp_xattr_get_interpterer);
+ if (rc != 0) {
+ mutex_unlock(&osp->opd_async_requests_mutex);
+ osp_oac_xattr_put(oxe);
+ } else {
+ struct dt_update_request *update;
+
+ /* XXX: Currently, we trigger the batched async OUT
+ * RPC via dt_declare_xattr_get(). It is not
+ * perfect solution, but works well now.
+ *
+ * We will improve it in the future. */
+ update = osp->opd_async_requests;
+ if (update != NULL && update->dur_buf.ub_req != NULL &&
+ update->dur_buf.ub_req->ourq_count > 0) {
+ osp->opd_async_requests = NULL;
+ mutex_unlock(&osp->opd_async_requests_mutex);
+ rc = osp_unplug_async_request(env, osp, update);
+ } else {
+ mutex_unlock(&osp->opd_async_requests_mutex);
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_xattr_get() interface.
+ *
+ * Get extended attribute from the specified MDT/OST object.
+ *
+ * If the extended attribute is in the OSP object attributes cache, then
+ * return the cached extended attribute directly. Otherwise it will get
+ * the extended attribute synchronously, if successful, add it to the OSP
+ * attributes cache. (\see lustre/osp/osp_trans.c for OUT RPC.)
+ *
+ * There is a race condition: some other thread has added the named extended
+ * attributed entry to the OSP object attributes cache during the current
+ * OUT_XATTR_GET handling. If such case happens, the OSP will replace the
+ * (just) existing extended attribute entry with the new replied one.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[out] buf pointer to the lu_buf to hold the extended attribute
+ * \param[in] name the name for the expected extended attribute
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
+ struct lu_buf *buf, const char *name,
+ struct lustre_capa *capa)
+{
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+ struct osp_object *obj = dt2osp_obj(dt);
+ struct dt_device *dev = &osp->opd_dt_dev;
+ struct lu_buf *rbuf = &osp_env_info(env)->osi_lb2;
+ struct dt_update_request *update = NULL;
+ struct ptlrpc_request *req = NULL;
+ struct object_update_reply *reply;
+ struct osp_xattr_entry *oxe = NULL;
+ const char *dname = dt->do_lu.lo_dev->ld_obd->obd_name;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(buf != NULL);
+ LASSERT(name != NULL);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NETWORK) &&
+ osp->opd_index == cfs_fail_val) {
+ if (is_ost_obj(&dt->do_lu)) {
+ if (osp_dev2node(osp) == cfs_fail_val)
+ RETURN(-ENOTCONN);
+ } else {
+ if (strcmp(name, XATTR_NAME_LINK) == 0)
+ RETURN(-ENOTCONN);
+ }
+ }
+
+ if (unlikely(obj->opo_non_exist))
+ RETURN(-ENOENT);
+
+ oxe = osp_oac_xattr_find(obj, name, false);
+ if (oxe != NULL) {
+ spin_lock(&obj->opo_lock);
+ if (oxe->oxe_ready) {
+ if (!oxe->oxe_exist)
+ GOTO(unlock, rc = -ENODATA);
+
+ if (buf->lb_buf == NULL)
+ GOTO(unlock, rc = oxe->oxe_vallen);
+
+ if (buf->lb_len < oxe->oxe_vallen)
+ GOTO(unlock, rc = -ERANGE);
+
+ memcpy(buf->lb_buf, oxe->oxe_value, oxe->oxe_vallen);
+
+ GOTO(unlock, rc = oxe->oxe_vallen);
+
+unlock:
+ spin_unlock(&obj->opo_lock);
+ osp_oac_xattr_put(oxe);
+
+ return rc;
+ }
+ spin_unlock(&obj->opo_lock);
+ }
+
+ update = dt_update_request_create(dev);
+ if (IS_ERR(update))
+ GOTO(out, rc = PTR_ERR(update));
+
+ rc = out_xattr_get_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu), name);
+ if (rc != 0) {
+ CERROR("%s: Insert update error "DFID": rc = %d\n",
+ dname, PFID(lu_object_fid(&dt->do_lu)), rc);
+ GOTO(out, rc);
+ }
+
+ rc = out_remote_sync(env, osp->opd_obd->u.cli.cl_import, update, &req);
+ if (rc != 0) {
+ if (rc == -ENOENT) {
+ dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
+ obj->opo_non_exist = 1;
+ }
+
+ if (obj->opo_ooa == NULL)
+ GOTO(out, rc);
+
+ if (oxe == NULL)
+ oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
+
+ if (oxe == NULL) {
+ CWARN("%s: Fail to add xattr (%s) to cache for "
+ DFID" (1): rc = %d\n", dname, name,
+ PFID(lu_object_fid(&dt->do_lu)), rc);
+
+ GOTO(out, rc);
+ }
+
+ spin_lock(&obj->opo_lock);
+ if (rc == -ENOENT || rc == -ENODATA) {
+ oxe->oxe_exist = 0;
+ oxe->oxe_ready = 1;
+ } else {
+ oxe->oxe_ready = 0;
+ }
+ spin_unlock(&obj->opo_lock);
+
+ GOTO(out, rc);
+ }
+
+ reply = req_capsule_server_sized_get(&req->rq_pill,
+ &RMF_OUT_UPDATE_REPLY,
+ OUT_UPDATE_REPLY_SIZE);
+ if (reply->ourp_magic != UPDATE_REPLY_MAGIC) {
+ CERROR("%s: Wrong version %x expected %x "DFID": rc = %d\n",
+ dname, reply->ourp_magic, UPDATE_REPLY_MAGIC,
+ PFID(lu_object_fid(&dt->do_lu)), -EPROTO);
+
+ GOTO(out, rc = -EPROTO);
+ }
+
+ rc = object_update_result_data_get(reply, rbuf, 0);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ if (buf->lb_buf == NULL)
+ GOTO(out, rc = rbuf->lb_len);
+
+ if (unlikely(buf->lb_len < rbuf->lb_len))
+ GOTO(out, rc = -ERANGE);
+
+ memcpy(buf->lb_buf, rbuf->lb_buf, rbuf->lb_len);
+ rc = rbuf->lb_len;
+ if (obj->opo_ooa == NULL)
+ GOTO(out, rc);
+
+ if (oxe == NULL) {
+ oxe = osp_oac_xattr_find_or_add(obj, name, rbuf->lb_len);
+ if (oxe == NULL) {
+ CWARN("%s: Fail to add xattr (%s) to "
+ "cache for "DFID" (2): rc = %d\n",
+ dname, name, PFID(lu_object_fid(&dt->do_lu)), rc);
+
+ GOTO(out, rc);
+ }
+ }
+
+ if (oxe->oxe_buflen - oxe->oxe_namelen - 1 < rbuf->lb_len) {
+ struct osp_xattr_entry *old = oxe;
+ struct osp_xattr_entry *tmp;
+
+ tmp = osp_oac_xattr_replace(obj, &old, rbuf->lb_len);
+ osp_oac_xattr_put(oxe);
+ oxe = tmp;
+ if (tmp == NULL) {
+ CWARN("%s: Fail to update xattr (%s) to "
+ "cache for "DFID": rc = %d\n",
+ dname, name, PFID(lu_object_fid(&dt->do_lu)), rc);
+ spin_lock(&obj->opo_lock);
+ old->oxe_ready = 0;
+ spin_unlock(&obj->opo_lock);
+
+ GOTO(out, rc);
+ }
+
+ /* Drop the ref for entry on list. */
+ osp_oac_xattr_put(old);
+ }
+
+ spin_lock(&obj->opo_lock);
+ oxe->oxe_vallen = rbuf->lb_len;
+ memcpy(oxe->oxe_value, rbuf->lb_buf, rbuf->lb_len);
+ oxe->oxe_exist = 1;
+ oxe->oxe_ready = 1;
+ spin_unlock(&obj->opo_lock);
+
+ GOTO(out, rc);
+
+out:
+ if (req != NULL)
+ ptlrpc_req_finished(req);
+
+ if (update != NULL && !IS_ERR(update))
+ dt_update_request_destroy(update);
+
+ if (oxe != NULL)
+ osp_oac_xattr_put(oxe);
+
+ return rc;
+}
+
+static int __osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_buf *buf, const char *name,
+ int flag, struct thandle *th)
+{
+ struct osp_object *o = dt2osp_obj(dt);
+ struct dt_update_request *update;
+ struct osp_xattr_entry *oxe;
+ int rc;
+ ENTRY;
+
+ LASSERT(buf->lb_len > 0 && buf->lb_buf != NULL);
+
+ update = dt_update_request_find_or_create(th, dt);
+ if (IS_ERR(update)) {
+ CERROR("%s: Get OSP update buf failed "DFID": rc = %d\n",
+ dt->do_lu.lo_dev->ld_obd->obd_name,
+ PFID(lu_object_fid(&dt->do_lu)),
+ (int)PTR_ERR(update));
+
+ RETURN(PTR_ERR(update));
+ }
+
+ rc = out_xattr_set_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu),
+ buf, name, flag, update->dur_batchid);
+ if (rc != 0 || o->opo_ooa == NULL)
+ RETURN(rc);
+
+ oxe = osp_oac_xattr_find_or_add(o, name, buf->lb_len);
+ if (oxe == NULL) {
+ CWARN("%s: Fail to add xattr (%s) to cache for "DFID,
+ dt->do_lu.lo_dev->ld_obd->obd_name,
+ name, PFID(lu_object_fid(&dt->do_lu)));
+
+ RETURN(0);
+ }
+
+ if (oxe->oxe_buflen - oxe->oxe_namelen - 1 < buf->lb_len) {
+ struct osp_xattr_entry *old = oxe;
+ struct osp_xattr_entry *tmp;
+
+ tmp = osp_oac_xattr_replace(o, &old, buf->lb_len);
+ osp_oac_xattr_put(oxe);
+ oxe = tmp;
+ if (tmp == NULL) {
+ CWARN("%s: Fail to update xattr (%s) to cache for "DFID,
+ dt->do_lu.lo_dev->ld_obd->obd_name,
+ name, PFID(lu_object_fid(&dt->do_lu)));
+ spin_lock(&o->opo_lock);
+ old->oxe_ready = 0;
+ spin_unlock(&o->opo_lock);
+
+ RETURN(0);
+ }
+
+ /* Drop the ref for entry on list. */
+ osp_oac_xattr_put(old);
+ }
+
+ spin_lock(&o->opo_lock);
+ oxe->oxe_vallen = buf->lb_len;
+ memcpy(oxe->oxe_value, buf->lb_buf, buf->lb_len);
+ oxe->oxe_exist = 1;
+ oxe->oxe_ready = 1;
+ spin_unlock(&o->opo_lock);
+ osp_oac_xattr_put(oxe);
+
+ RETURN(0);
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_declare_xattr_set() interface.
+ *
+ * Declare that the caller will set extended attribute to the specified
+ * MDT/OST object.
+ *
+ * This function will add an OUT_XATTR_SET sub-request to the per
+ * OSP-transaction based request queue which will be flushed when
+ * the transaction starts.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] buf pointer to the lu_buf to hold the extended attribute
+ * \param[in] name the name of the extended attribute to be set
+ * \param[in] flag to indicate the detailed set operation: LU_XATTR_CREATE
+ * or LU_XATTR_REPLACE or others
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_buf *buf, const char *name,
+ int flag, struct thandle *th)
+{
+ int rc = 0;
+
+ /* Please check the comment in osp_attr_set() for handling
+ * remote transaction. */
+ if (!is_only_remote_trans(th))
+ rc = __osp_xattr_set(env, dt, buf, name, flag, th);
+
+ return rc;
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_xattr_set() interface.
+ *
+ * Set extended attribute to the specified MDT/OST object.
+ *
+ * The real modification sub-request has been added in the declare phase
+ * and related (OUT) RPC has been triggered when transaction start.
+ *
+ * If the OSP attributes cache is initialized, then check whether the name
+ * extended attribute entry exists in the cache or not. If yes, replace it;
+ * otherwise, add the extended attribute to the cache.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] buf pointer to the lu_buf to hold the extended attribute
+ * \param[in] name the name of the extended attribute to be set
+ * \param[in] fl to indicate the detailed set operation: LU_XATTR_CREATE
+ * or LU_XATTR_REPLACE or others
+ * \param[in] th pointer to the transaction handler
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_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)
+{
+ int rc = 0;
+
+ CDEBUG(D_INFO, "xattr %s set object "DFID"\n", name,
+ PFID(&dt->do_lu.lo_header->loh_fid));
+
+ /* Please check the comment in osp_attr_set() for handling
+ * remote transaction. */
+ if (is_only_remote_trans(th))
+ rc = __osp_xattr_set(env, dt, buf, name, fl, th);
+
+ return rc;
+}
+
+static int __osp_xattr_del(const struct lu_env *env, struct dt_object *dt,
+ const char *name, struct thandle *th)
+{
+ struct dt_update_request *update;
+ const struct lu_fid *fid;
+ struct osp_object *o = dt2osp_obj(dt);
+ struct osp_xattr_entry *oxe;
+ int rc;
+
+ update = dt_update_request_find_or_create(th, dt);
+ if (IS_ERR(update))
+ return PTR_ERR(update);
- if (attr->la_valid & LA_SIZE && attr->la_size > 0 &&
- fid_is_zero(lu_object_fid(&o->opo_obj.do_lu))) {
- LASSERT(!dt_object_exists(dt));
- osp_object_assign_fid(env, d, o);
- rc = osp_object_truncate(env, dt, attr->la_size);
- if (rc)
- RETURN(rc);
- }
+ fid = lu_object_fid(&dt->do_lu);
- if (o->opo_new) {
- /* no need in logging for new objects being created */
- RETURN(0);
- }
+ rc = out_xattr_del_pack(env, &update->dur_buf, fid, name,
+ update->dur_batchid);
- if (!(attr->la_valid & (LA_UID | LA_GID)))
- RETURN(0);
+ if (rc != 0 || o->opo_ooa == NULL)
+ return rc;
- /*
- * track all UID/GID changes via llog
- */
- rc = osp_sync_declare_add(env, o, MDS_SETATTR64_REC, th);
+ oxe = osp_oac_xattr_find(o, name, true);
+ if (oxe != NULL)
+ /* Drop the ref for entry on list. */
+ osp_oac_xattr_put(oxe);
- RETURN(rc);
+ return 0;
}
-static int osp_attr_set(const struct lu_env *env, struct dt_object *dt,
- const struct lu_attr *attr, struct thandle *th,
- struct lustre_capa *capa)
+/**
+ * Implement OSP layer dt_object_operations::do_declare_xattr_del() interface.
+ *
+ * Declare that the caller will delete extended attribute on the specified
+ * MDT/OST object.
+ *
+ * This function will add an OUT_XATTR_DEL sub-request to the per
+ * OSP-transaction based request queue which will be flushed when
+ * transaction start.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] name the name of the extended attribute to be set
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
+ const char *name, struct thandle *th)
{
- struct osp_object *o = dt2osp_obj(dt);
- int rc = 0;
+ int rc = 0;
- ENTRY;
+ /* Please check the comment in osp_attr_set() for handling
+ * remote transaction. */
+ if (!is_only_remote_trans(th))
+ rc = __osp_xattr_del(env, dt, name, th);
- /* we're interested in uid/gid changes only */
- if (!(attr->la_valid & (LA_UID | LA_GID)))
- RETURN(0);
+ return rc;
+}
- /* new object, the very first ->attr_set()
- * initializing attributes needs no logging
- * all subsequent one are subject to the
- * logging and synchronization with OST */
- if (o->opo_new) {
- o->opo_new = 0;
- RETURN(0);
- }
+/**
+ * Implement OSP layer dt_object_operations::do_xattr_del() interface.
+ *
+ * Delete extended attribute on the specified MDT/OST object.
+ *
+ * The real modification sub-request has been added in the declare phase
+ * and related (OUT) RPC has been triggered when transaction start.
+ *
+ * If the name extended attribute entry exists in the OSP attributes
+ * cache, then remove it from the cache.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] name the name of the extended attribute to be set
+ * \param[in] th pointer to the transaction handler
+ * \param[in] capa the capability for this operation
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_xattr_del(const struct lu_env *env, struct dt_object *dt,
+ const char *name, struct thandle *th,
+ struct lustre_capa *capa)
+{
+ int rc = 0;
- /*
- * once transaction is committed put proper command on
- * the queue going to our OST
- */
- rc = osp_sync_add(env, o, MDS_SETATTR64_REC, th, attr);
+ CDEBUG(D_INFO, "xattr %s del object "DFID"\n", name,
+ PFID(&dt->do_lu.lo_header->loh_fid));
- /* XXX: send new uid/gid to OST ASAP? */
+ /* Please check the comment in osp_attr_set() for handling
+ * remote transaction. */
+ if (is_only_remote_trans(th))
+ rc = __osp_xattr_del(env, dt, name, th);
- RETURN(rc);
+ return rc;
}
+/**
+ * Implement OSP layer dt_object_operations::do_declare_create() interface.
+ *
+ * Declare that the caller will create the OST object.
+ *
+ * If the transaction is a remote transaction (please refer to the
+ * comment of osp_trans_create() for remote transaction), then the FID
+ * for the OST object has been assigned already, and will be handled
+ * as create (remote) MDT object via osp_md_declare_object_create().
+ * This function is usually used for LFSCK to re-create the lost OST
+ * object. Otherwise, if it is not replay case, the OSP will reserve
+ * pre-created object for the subsequent create operation; if the MDT
+ * side cached pre-created objects are less than some threshold, then
+ * it will wakeup the pre-create thread.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] attr the attribute for the object to be created
+ * \param[in] hint pointer to the hint for creating the object, such as
+ * the parent object
+ * \param[in] dof pointer to the dt_object_format for help the creation
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
static int osp_declare_object_create(const struct lu_env *env,
struct dt_object *dt,
struct lu_attr *attr,
struct osp_thread_info *osi = osp_env_info(env);
struct osp_device *d = lu2osp_dev(dt->do_lu.lo_dev);
struct osp_object *o = dt2osp_obj(dt);
- const struct lu_fid *fid;
+ const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
int rc = 0;
ENTRY;
+ if (is_only_remote_trans(th)) {
+ LASSERT(fid_is_sane(fid));
+
+ rc = osp_md_declare_object_create(env, dt, attr, hint, dof, th);
+
+ RETURN(rc);
+ }
+
/* should happen to non-0 OSP only so that at least one object
* has been already declared in the scenario and LOD should
* cleanup that */
RETURN(-ENOSPC);
LASSERT(d->opd_last_used_oid_file);
- fid = lu_object_fid(&dt->do_lu);
/*
* There can be gaps in precreated ids and record to unlink llog
if (unlikely(!fid_is_zero(fid))) {
/* replay case: caller knows fid */
osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
+ osi->osi_lb.lb_len = sizeof(osi->osi_id);
+ osi->osi_lb.lb_buf = NULL;
rc = dt_declare_record_write(env, d->opd_last_used_oid_file,
- sizeof(osi->osi_id), osi->osi_off,
- th);
+ &osi->osi_lb, osi->osi_off, th);
RETURN(rc);
}
/* common for all OSPs file hystorically */
osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
+ osi->osi_lb.lb_len = sizeof(osi->osi_id);
+ osi->osi_lb.lb_buf = NULL;
rc = dt_declare_record_write(env, d->opd_last_used_oid_file,
- sizeof(osi->osi_id), osi->osi_off,
- th);
+ &osi->osi_lb, osi->osi_off, th);
} else {
/* not needed in the cache anymore */
set_bit(LU_OBJECT_HEARD_BANSHEE,
RETURN(rc);
}
+/**
+ * Implement OSP layer dt_object_operations::do_create() interface.
+ *
+ * Create the OST object.
+ *
+ * For remote transaction case, the real create sub-request has been
+ * added in the declare phase and related (OUT) RPC has been triggered
+ * at transaction start. Here, like creating (remote) MDT object, the
+ * OSP will mark the object existence via osp_md_object_create().
+ *
+ * For non-remote transaction case, the OSP will assign FID to the
+ * object to be created, and update last_used Object ID (OID) file.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] attr the attribute for the object to be created
+ * \param[in] hint pointer to the hint for creating the object, such as
+ * the parent object
+ * \param[in] dof pointer to the dt_object_format for help the creation
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
static int osp_object_create(const struct lu_env *env, struct dt_object *dt,
struct lu_attr *attr,
struct dt_allocation_hint *hint,
struct lu_fid *fid = &osi->osi_fid;
ENTRY;
+ if (is_only_remote_trans(th)) {
+ LASSERT(fid_is_sane(lu_object_fid(&dt->do_lu)));
+
+ rc = osp_md_object_create(env, dt, attr, hint, dof, th);
+ if (rc == 0)
+ o->opo_non_exist = 0;
+
+ RETURN(rc);
+ }
+
+ o->opo_non_exist = 0;
if (o->opo_reserved) {
- /* regular case, fid is assigned holding trunsaction open */
+ /* regular case, fid is assigned holding transaction open */
osp_object_assign_fid(env, d, o);
}
if (!o->opo_reserved) {
/* special case, id was assigned outside of transaction
* see comments in osp_declare_attr_set */
+ LASSERT(d->opd_pre != NULL);
spin_lock(&d->opd_pre_lock);
osp_update_last_fid(d, fid);
spin_unlock(&d->opd_pre_lock);
/* we might have lost precreated objects */
if (unlikely(d->opd_gap_count) > 0) {
+ LASSERT(d->opd_pre != NULL);
spin_lock(&d->opd_pre_lock);
if (d->opd_gap_count > 0) {
int count = d->opd_gap_count;
d->opd_gap_count = 0;
spin_unlock(&d->opd_pre_lock);
- CDEBUG(D_HA, "Writting gap "DFID"+%d in llog\n",
+ CDEBUG(D_HA, "Writing gap "DFID"+%d in llog\n",
PFID(&d->opd_gap_start_fid), count);
/* real gap handling is disabled intil ORI-692 will be
* fixed, now we only report gaps */
RETURN(rc);
}
-static int osp_declare_object_destroy(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
+/**
+ * Implement OSP layer dt_object_operations::do_declare_destroy() interface.
+ *
+ * Declare that the caller will destroy the specified OST object.
+ *
+ * The OST object destroy will be handled via llog asynchronously. This
+ * function will declare the credits for generating MDS_UNLINK64_REC llog.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object to be destroyed
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_declare_object_destroy(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
{
struct osp_object *o = dt2osp_obj(dt);
int rc = 0;
RETURN(rc);
}
-static int osp_object_destroy(const struct lu_env *env, struct dt_object *dt,
- struct thandle *th)
+/**
+ * Implement OSP layer dt_object_operations::do_destroy() interface.
+ *
+ * Destroy the specified OST object.
+ *
+ * The OSP generates a MDS_UNLINK64_REC record in the llog. There
+ * will be some dedicated thread to handle the llog asynchronously.
+ *
+ * It also marks the object as non-cached.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object to be destroyed
+ * \param[in] th pointer to the transaction handler
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_object_destroy(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
{
struct osp_object *o = dt2osp_obj(dt);
int rc = 0;
ENTRY;
+ o->opo_non_exist = 1;
/*
* once transaction is committed put proper command on
* the queue going to our OST
RETURN(rc);
}
+static int osp_orphan_index_lookup(const struct lu_env *env,
+ struct dt_object *dt,
+ struct dt_rec *rec,
+ const struct dt_key *key,
+ struct lustre_capa *capa)
+{
+ return -EOPNOTSUPP;
+}
+
+static int osp_orphan_index_declare_insert(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_rec *rec,
+ const struct dt_key *key,
+ struct thandle *handle)
+{
+ return -EOPNOTSUPP;
+}
+
+static int osp_orphan_index_insert(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_rec *rec,
+ const struct dt_key *key,
+ struct thandle *handle,
+ struct lustre_capa *capa,
+ int ignore_quota)
+{
+ return -EOPNOTSUPP;
+}
+
+static int osp_orphan_index_declare_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_key *key,
+ struct thandle *handle)
+{
+ return -EOPNOTSUPP;
+}
+
+static int osp_orphan_index_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_key *key,
+ struct thandle *handle,
+ struct lustre_capa *capa)
+{
+ return -EOPNOTSUPP;
+}
+
+/**
+ * Initialize the OSP layer index iteration.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the index object to be iterated
+ * \param[in] attr unused
+ * \param[in] capa the capability for this operation
+ *
+ * \retval pointer to the iteration structure
+ * \retval negative error number on failure
+ */
+struct dt_it *osp_it_init(const struct lu_env *env, struct dt_object *dt,
+ __u32 attr, struct lustre_capa *capa)
+{
+ struct osp_it *it;
+
+ OBD_ALLOC_PTR(it);
+ if (it == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ it->ooi_pos_ent = -1;
+ it->ooi_obj = dt;
+
+ return (struct dt_it *)it;
+}
+
+/**
+ * Finalize the OSP layer index iteration.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] di pointer to the iteration structure
+ */
+void osp_it_fini(const struct lu_env *env, struct dt_it *di)
+{
+ struct osp_it *it = (struct osp_it *)di;
+ struct page **pages = it->ooi_pages;
+ int npages = it->ooi_total_npages;
+ int i;
+
+ if (pages != NULL) {
+ for (i = 0; i < npages; i++) {
+ if (pages[i] != NULL) {
+ if (pages[i] == it->ooi_cur_page) {
+ kunmap(pages[i]);
+ it->ooi_cur_page = NULL;
+ }
+ __free_page(pages[i]);
+ }
+ }
+ OBD_FREE(pages, npages * sizeof(*pages));
+ }
+ OBD_FREE_PTR(it);
+}
+
+/**
+ * Get more records for the iteration from peer.
+ *
+ * The new records will be filled in an array of pages. The OSP side
+ * allows 1MB bulk data to be transfered.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] it pointer to the iteration structure
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static int osp_it_fetch(const struct lu_env *env, struct osp_it *it)
+{
+ struct lu_device *dev = it->ooi_obj->do_lu.lo_dev;
+ struct osp_device *osp = lu2osp_dev(dev);
+ struct page **pages;
+ struct ptlrpc_request *req = NULL;
+ struct ptlrpc_bulk_desc *desc;
+ struct idx_info *ii;
+ int npages;
+ int rc;
+ int i;
+ ENTRY;
+
+ /* 1MB bulk */
+ npages = min_t(unsigned int, OFD_MAX_BRW_SIZE, 1 << 20);
+ npages /= PAGE_CACHE_SIZE;
+
+ OBD_ALLOC(pages, npages * sizeof(*pages));
+ if (pages == NULL)
+ RETURN(-ENOMEM);
+
+ it->ooi_pages = pages;
+ it->ooi_total_npages = npages;
+ for (i = 0; i < npages; i++) {
+ pages[i] = alloc_page(GFP_IOFS);
+ if (pages[i] == NULL)
+ RETURN(-ENOMEM);
+ }
+
+ req = ptlrpc_request_alloc(osp->opd_obd->u.cli.cl_import,
+ &RQF_OBD_IDX_READ);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OBD_VERSION, OBD_IDX_READ);
+ if (rc != 0) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+
+ req->rq_request_portal = OUT_PORTAL;
+ ii = req_capsule_client_get(&req->rq_pill, &RMF_IDX_INFO);
+ memset(ii, 0, sizeof(*ii));
+ if (fid_is_last_id(lu_object_fid(&it->ooi_obj->do_lu))) {
+ /* LFSCK will iterate orphan object[FID_SEQ_LAYOUT_BTREE,
+ * ost_index, 0] with LAST_ID FID, so it needs to replace
+ * the FID with orphan FID here */
+ ii->ii_fid.f_seq = FID_SEQ_LAYOUT_RBTREE;
+ ii->ii_fid.f_oid = osp->opd_index;
+ ii->ii_fid.f_ver = 0;
+ ii->ii_flags = II_FL_NOHASH;
+ } else {
+ ii->ii_fid = *lu_object_fid(&it->ooi_obj->do_lu);
+ ii->ii_flags = II_FL_NOHASH | II_FL_NOKEY | II_FL_VARKEY |
+ II_FL_VARREC;
+ }
+ ii->ii_magic = IDX_INFO_MAGIC;
+ ii->ii_count = npages * LU_PAGE_COUNT;
+ ii->ii_hash_start = it->ooi_next;
+ ii->ii_attrs = osp_dev2node(osp);
+
+ ptlrpc_at_set_req_timeout(req);
+
+ desc = ptlrpc_prep_bulk_imp(req, npages, 1, BULK_PUT_SINK,
+ MDS_BULK_PORTAL);
+ if (desc == NULL) {
+ ptlrpc_request_free(req);
+ RETURN(-ENOMEM);
+ }
+
+ for (i = 0; i < npages; i++)
+ ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
+
+ ptlrpc_request_set_replen(req);
+ rc = ptlrpc_queue_wait(req);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
+ req->rq_bulk->bd_nob_transferred);
+ if (rc < 0)
+ GOTO(out, rc);
+ rc = 0;
+
+ ii = req_capsule_server_get(&req->rq_pill, &RMF_IDX_INFO);
+ if (ii->ii_magic != IDX_INFO_MAGIC)
+ GOTO(out, rc = -EPROTO);
+
+ npages = (ii->ii_count + LU_PAGE_COUNT - 1) >>
+ (PAGE_CACHE_SHIFT - LU_PAGE_SHIFT);
+ if (npages > it->ooi_total_npages) {
+ CERROR("%s: returned more pages than expected, %u > %u\n",
+ osp->opd_obd->obd_name, npages, it->ooi_total_npages);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ it->ooi_valid_npages = npages;
+ if (ptlrpc_rep_need_swab(req))
+ it->ooi_swab = 1;
+
+ it->ooi_next = ii->ii_hash_end;
+
+out:
+ ptlrpc_req_finished(req);
+
+ return rc;
+}
+
+/**
+ * Move the iteration cursor to the next lu_page.
+ *
+ * One system page (PAGE_SIZE) may contain multiple lu_page (4KB),
+ * that depends on the LU_PAGE_COUNT. If it is not the last lu_page
+ * in current system page, then move the iteration cursor to the next
+ * lu_page in current system page. Otherwise, if there are more system
+ * pages in the cache, then move the iteration cursor to the next system
+ * page. If all the cached records (pages) have been iterated, then fetch
+ * more records via osp_it_fetch().
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] di pointer to the iteration structure
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_it_next_page(const struct lu_env *env, struct dt_it *di)
+{
+ struct osp_it *it = (struct osp_it *)di;
+ struct lu_idxpage *idxpage;
+ struct page **pages;
+ int rc;
+ int i;
+ ENTRY;
+
+again2:
+ idxpage = it->ooi_cur_idxpage;
+ if (idxpage != NULL) {
+ if (idxpage->lip_nr == 0)
+ RETURN(1);
+
+ if (it->ooi_pos_ent < idxpage->lip_nr) {
+ CDEBUG(D_INFO, "ooi_pos %d nr %d\n",
+ (int)it->ooi_pos_ent, (int)idxpage->lip_nr);
+ RETURN(0);
+ }
+ it->ooi_cur_idxpage = NULL;
+ it->ooi_pos_lu_page++;
+again1:
+ if (it->ooi_pos_lu_page < LU_PAGE_COUNT) {
+ it->ooi_cur_idxpage = (void *)it->ooi_cur_page +
+ LU_PAGE_SIZE * it->ooi_pos_lu_page;
+ if (it->ooi_swab)
+ lustre_swab_lip_header(it->ooi_cur_idxpage);
+ if (it->ooi_cur_idxpage->lip_magic != LIP_MAGIC) {
+ struct osp_device *osp =
+ lu2osp_dev(it->ooi_obj->do_lu.lo_dev);
+
+ CERROR("%s: invalid magic (%x != %x) for page "
+ "%d/%d while read layout orphan index\n",
+ osp->opd_obd->obd_name,
+ it->ooi_cur_idxpage->lip_magic,
+ LIP_MAGIC, it->ooi_pos_page,
+ it->ooi_pos_lu_page);
+ /* Skip this lu_page next time. */
+ it->ooi_pos_ent = idxpage->lip_nr - 1;
+ RETURN(-EINVAL);
+ }
+ it->ooi_pos_ent = -1;
+ goto again2;
+ }
+
+ kunmap(it->ooi_cur_page);
+ it->ooi_cur_page = NULL;
+ it->ooi_pos_page++;
+
+again0:
+ pages = it->ooi_pages;
+ if (it->ooi_pos_page < it->ooi_valid_npages) {
+ it->ooi_cur_page = kmap(pages[it->ooi_pos_page]);
+ it->ooi_pos_lu_page = 0;
+ goto again1;
+ }
+
+ for (i = 0; i < it->ooi_total_npages; i++) {
+ if (pages[i] != NULL)
+ __free_page(pages[i]);
+ }
+ OBD_FREE(pages, it->ooi_total_npages * sizeof(*pages));
+
+ it->ooi_pos_page = 0;
+ it->ooi_total_npages = 0;
+ it->ooi_valid_npages = 0;
+ it->ooi_swab = 0;
+ it->ooi_ent = NULL;
+ it->ooi_cur_page = NULL;
+ it->ooi_cur_idxpage = NULL;
+ it->ooi_pages = NULL;
+ }
+
+ if (it->ooi_next == II_END_OFF)
+ RETURN(1);
+
+ rc = osp_it_fetch(env, it);
+ if (rc == 0)
+ goto again0;
+
+ RETURN(rc);
+}
+
+/**
+ * Move the iteration cursor to the next record.
+ *
+ * If there are more records in the lu_page, then move the iteration
+ * cursor to the next record directly. Otherwise, move the iteration
+ * cursor to the record in the next lu_page via osp_it_next_page()
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] di pointer to the iteration structure
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_orphan_it_next(const struct lu_env *env, struct dt_it *di)
+{
+ struct osp_it *it = (struct osp_it *)di;
+ struct lu_idxpage *idxpage;
+ int rc;
+ ENTRY;
+
+again:
+ idxpage = it->ooi_cur_idxpage;
+ if (idxpage != NULL) {
+ if (idxpage->lip_nr == 0)
+ RETURN(1);
+
+ it->ooi_pos_ent++;
+ if (it->ooi_pos_ent < idxpage->lip_nr) {
+ it->ooi_ent =
+ (struct lu_orphan_ent *)idxpage->lip_entries +
+ it->ooi_pos_ent;
+ if (it->ooi_swab)
+ lustre_swab_orphan_ent(it->ooi_ent);
+ RETURN(0);
+ }
+ }
+
+ rc = osp_it_next_page(env, di);
+ if (rc == 0)
+ goto again;
+
+ RETURN(rc);
+}
+
+int osp_it_get(const struct lu_env *env, struct dt_it *di,
+ const struct dt_key *key)
+{
+ return 1;
+}
+
+void osp_it_put(const struct lu_env *env, struct dt_it *di)
+{
+}
+
+struct dt_key *osp_orphan_it_key(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ struct osp_it *it = (struct osp_it *)di;
+ struct lu_orphan_ent *ent = (struct lu_orphan_ent *)it->ooi_ent;
+
+ if (likely(ent != NULL))
+ return (struct dt_key *)(&ent->loe_key);
+
+ return NULL;
+}
+
+int osp_orphan_it_key_size(const struct lu_env *env, const struct dt_it *di)
+{
+ return sizeof(struct lu_fid);
+}
+
+int osp_orphan_it_rec(const struct lu_env *env, const struct dt_it *di,
+ struct dt_rec *rec, __u32 attr)
+{
+ struct osp_it *it = (struct osp_it *)di;
+ struct lu_orphan_ent *ent = (struct lu_orphan_ent *)it->ooi_ent;
+
+ if (likely(ent != NULL)) {
+ *(struct lu_orphan_rec *)rec = ent->loe_rec;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+__u64 osp_it_store(const struct lu_env *env, const struct dt_it *di)
+{
+ struct osp_it *it = (struct osp_it *)di;
+
+ return it->ooi_next;
+}
+
+/**
+ * Locate the iteration cursor to the specified position (cookie).
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] di pointer to the iteration structure
+ * \param[in] hash the specified position
+ *
+ * \retval positive number for locating to the exactly position
+ * or the next
+ * \retval 0 for arriving at the end of the iteration
+ * \retval negative error number on failure
+ */
+int osp_orphan_it_load(const struct lu_env *env, const struct dt_it *di,
+ __u64 hash)
+{
+ struct osp_it *it = (struct osp_it *)di;
+ int rc;
+
+ it->ooi_next = hash;
+ rc = osp_orphan_it_next(env, (struct dt_it *)di);
+ if (rc == 1)
+ return 0;
+
+ if (rc == 0)
+ return 1;
+
+ return rc;
+}
+
+int osp_it_key_rec(const struct lu_env *env, const struct dt_it *di,
+ void *key_rec)
+{
+ return 0;
+}
+
+static const struct dt_index_operations osp_orphan_index_ops = {
+ .dio_lookup = osp_orphan_index_lookup,
+ .dio_declare_insert = osp_orphan_index_declare_insert,
+ .dio_insert = osp_orphan_index_insert,
+ .dio_declare_delete = osp_orphan_index_declare_delete,
+ .dio_delete = osp_orphan_index_delete,
+ .dio_it = {
+ .init = osp_it_init,
+ .fini = osp_it_fini,
+ .next = osp_orphan_it_next,
+ .get = osp_it_get,
+ .put = osp_it_put,
+ .key = osp_orphan_it_key,
+ .key_size = osp_orphan_it_key_size,
+ .rec = osp_orphan_it_rec,
+ .store = osp_it_store,
+ .load = osp_orphan_it_load,
+ .key_rec = osp_it_key_rec,
+ }
+};
+
+/**
+ * Implement OSP layer dt_object_operations::do_index_try() interface.
+ *
+ * Negotiate the index type.
+ *
+ * If the target index is an IDIF object, then use osp_orphan_index_ops.
+ * Otherwise, assign osp_md_index_ops to the dt_object::do_index_ops.
+ * (\see lustre/include/lustre_fid.h for IDIF.)
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ * \param[in] feat unused
+ *
+ * \retval 0 for success
+ */
+static int osp_index_try(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_index_features *feat)
+{
+ const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
+
+ if (fid_is_last_id(fid) && fid_is_idif(fid))
+ dt->do_index_ops = &osp_orphan_index_ops;
+ else
+ dt->do_index_ops = &osp_md_index_ops;
+ return 0;
+}
+
struct dt_object_operations osp_obj_ops = {
+ .do_declare_attr_get = osp_declare_attr_get,
+ .do_attr_get = osp_attr_get,
.do_declare_attr_set = osp_declare_attr_set,
.do_attr_set = osp_attr_set,
+ .do_declare_xattr_get = osp_declare_xattr_get,
+ .do_xattr_get = osp_xattr_get,
+ .do_declare_xattr_set = osp_declare_xattr_set,
+ .do_xattr_set = osp_xattr_set,
.do_declare_create = osp_declare_object_create,
.do_create = osp_object_create,
.do_declare_destroy = osp_declare_object_destroy,
.do_destroy = osp_object_destroy,
+ .do_index_try = osp_index_try,
};
-static int is_ost_obj(struct lu_object *lo)
-{
- struct osp_device *osp = lu2osp_dev(lo->lo_dev);
-
- return !osp->opd_connect_mdt;
-}
-
+/**
+ * Implement OSP layer lu_object_operations::loo_object_init() interface.
+ *
+ * Initialize the object.
+ *
+ * If it is a remote MDT object, then call do_attr_get() to fetch
+ * the attribute from the peer.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] o pointer to the OSP layer lu_object
+ * \param[in] conf unused
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
static int osp_object_init(const struct lu_env *env, struct lu_object *o,
const struct lu_object_conf *conf)
{
int rc = 0;
ENTRY;
+ spin_lock_init(&po->opo_lock);
+ o->lo_header->loh_attr |= LOHA_REMOTE;
+
if (is_ost_obj(o)) {
po->opo_obj.do_ops = &osp_obj_ops;
} else {
- struct lu_attr *la = &osp_env_info(env)->osi_attr;
+ struct lu_attr *la = &osp_env_info(env)->osi_attr;
po->opo_obj.do_ops = &osp_md_obj_ops;
- o->lo_header->loh_attr |= LOHA_REMOTE;
+ po->opo_obj.do_body_ops = &osp_md_body_ops;
rc = po->opo_obj.do_ops->do_attr_get(env, lu2dt_obj(o),
la, NULL);
if (rc == 0)
o->lo_header->loh_attr |=
LOHA_EXISTS | (la->la_mode & S_IFMT);
- if (rc == -ENOENT)
+ if (rc == -ENOENT) {
+ po->opo_non_exist = 1;
rc = 0;
+ }
+ init_rwsem(&po->opo_sem);
}
RETURN(rc);
}
+/**
+ * Implement OSP layer lu_object_operations::loo_object_free() interface.
+ *
+ * Finalize the object.
+ *
+ * If the OSP object has attributes cache, then destroy the cache.
+ * Free the object finally.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] o pointer to the OSP layer lu_object
+ */
static void osp_object_free(const struct lu_env *env, struct lu_object *o)
{
struct osp_object *obj = lu2osp_obj(o);
dt_object_fini(&obj->opo_obj);
lu_object_header_fini(h);
+ if (obj->opo_ooa != NULL) {
+ struct osp_xattr_entry *oxe;
+ struct osp_xattr_entry *tmp;
+ int count;
+
+ list_for_each_entry_safe(oxe, tmp,
+ &obj->opo_ooa->ooa_xattr_list,
+ oxe_list) {
+ list_del(&oxe->oxe_list);
+ count = atomic_read(&oxe->oxe_ref);
+ LASSERTF(count == 1,
+ "Still has %d users on the xattr entry %.*s\n",
+ count-1, (int)oxe->oxe_namelen, oxe->oxe_buf);
+
+ OBD_FREE(oxe, oxe->oxe_buflen);
+ }
+ OBD_FREE_PTR(obj->opo_ooa);
+ }
OBD_SLAB_FREE_PTR(obj, osp_object_kmem);
}
+/**
+ * Implement OSP layer lu_object_operations::loo_object_release() interface.
+ *
+ * Cleanup (not free) the object.
+ *
+ * If it is a reserved object but failed to be created, or it is an OST
+ * object, then mark the object as non-cached.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] o pointer to the OSP layer lu_object
+ */
static void osp_object_release(const struct lu_env *env, struct lu_object *o)
{
struct osp_object *po = lu2osp_obj(o);
* this may require lu_object_put() in LOD
*/
if (unlikely(po->opo_reserved)) {
+ LASSERT(d->opd_pre != NULL);
LASSERT(d->opd_pre_reserved > 0);
spin_lock(&d->opd_pre_lock);
d->opd_pre_reserved--;
/* not needed in cache any more */
set_bit(LU_OBJECT_HEARD_BANSHEE, &o->lo_header->loh_flags);
}
+
+ if (is_ost_obj(o))
+ /* XXX: Currently, NOT cache OST-object on MDT because:
+ * 1. it is not often accessed on MDT.
+ * 2. avoid up layer (such as LFSCK) to load too many
+ * once-used OST-objects. */
+ set_bit(LU_OBJECT_HEARD_BANSHEE, &o->lo_header->loh_flags);
+
EXIT;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff