*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* 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) 2012, 2017, 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 {
+ * ...
+ * struct lu_attr opo_attr;
+ * struct list_head opo_xattr_list;
+ * spinlock_t opo_lock;
+ * ...
+ * };
+ *
+ * The basic attributes, such as owner/mode/flags, are stored in the
+ * osp_object::opo_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::opo_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.
+ *
+ *
+ * XXX: NOT prepare out RPC for remote transaction. ((please refer to the
+ * comment of osp_trans_create() 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
+ * OUT RPC in the transaction 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 OUT RPC for repairing during the declare
+ * phase as other normal transactions do.
+ *
+ * To resolve the trouble, we will make OSP to prepare related OUT RPC
+ * after remote transaction started, and trigger the remote updating
+ * (send RPC) 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.
+ *
*
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
* Author: Mikhail Pershin <mike.tappro@intel.com>
#define DEBUG_SUBSYSTEM S_MDS
+#include <lustre_obdo.h>
+#include <lustre_swab.h>
+
#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 const char *osp_dto2name(struct osp_object *obj)
+{
+ return obj->opo_obj.do_lu.lo_dev->ld_obd->obd_name;
+}
+
static inline bool is_ost_obj(struct lu_object *lo)
{
return !lu2osp_dev(lo->lo_dev)->opd_connect_mdt;
}
+static inline void __osp_oac_xattr_assignment(struct osp_object *obj,
+ struct osp_xattr_entry *oxe,
+ const struct lu_buf *buf)
+{
+ if (buf->lb_len > 0)
+ memcpy(oxe->oxe_value, buf->lb_buf, buf->lb_len);
+
+ oxe->oxe_vallen = buf->lb_len;
+ oxe->oxe_exist = 1;
+ oxe->oxe_ready = 1;
+}
+
+/**
+ * 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_oac_init(struct osp_object *obj)
-{
- struct osp_object_attr *ooa;
+#define OXE_DEFAULT_LEN 16
- OBD_ALLOC_PTR(ooa);
- if (ooa == NULL)
- return -ENOMEM;
+/**
+ * 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));
- 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);
+ OBD_FREE_LARGE(oxe, oxe->oxe_buflen);
}
-
- 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] obj pointer to the OSP object
+ * \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, int namelen, bool unlink)
+osp_oac_xattr_find_locked(struct osp_object *obj, const char *name,
+ size_t namelen)
{
struct osp_xattr_entry *oxe;
- list_for_each_entry(oxe, &ooa->ooa_xattr_list, oxe_list) {
+ list_for_each_entry(oxe, &obj->opo_xattr_list, oxe_list) {
if (namelen == oxe->oxe_namelen &&
- strncmp(name, oxe->oxe_buf, namelen) == 0) {
- if (unlink)
- list_del_init(&oxe->oxe_list);
- else
- atomic_inc(&oxe->oxe_ref);
-
+ 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)
+ 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), false);
+ oxe = osp_oac_xattr_find_locked(obj, name, strlen(name));
+ if (oxe) {
+ 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, int len)
+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;
- int namelen = strlen(name);
- int size = sizeof(*oxe) + namelen + 1 + len;
+ struct osp_xattr_entry *tmp = NULL;
+ size_t namelen = strlen(name);
+ size_t size = sizeof(*oxe) + namelen + 1 +
+ (len ? len : OXE_DEFAULT_LEN);
- LASSERT(ooa != NULL);
-
- oxe = osp_oac_xattr_find(obj, name);
- if (oxe != NULL)
+ oxe = osp_oac_xattr_find(obj, name, false);
+ if (oxe)
return oxe;
- OBD_ALLOC(oxe, size);
- if (unlikely(oxe == NULL))
+ OBD_ALLOC_LARGE(oxe, size);
+ if (unlikely(!oxe))
return NULL;
INIT_LIST_HEAD(&oxe->oxe_list);
atomic_set(&oxe->oxe_ref, 2);
spin_lock(&obj->opo_lock);
- tmp = osp_oac_xattr_find_locked(ooa, name, namelen, false);
- if (tmp == NULL)
- list_add_tail(&oxe->oxe_list, &ooa->ooa_xattr_list);
+ tmp = osp_oac_xattr_find_locked(obj, name, namelen);
+ if (!tmp)
+ list_add_tail(&oxe->oxe_list, &obj->opo_xattr_list);
+ else
+ atomic_inc(&tmp->oxe_ref);
spin_unlock(&obj->opo_lock);
- if (tmp != NULL) {
- OBD_FREE(oxe, size);
+ if (tmp) {
+ OBD_FREE_LARGE(oxe, size);
oxe = tmp;
}
return oxe;
}
+/**
+ * Assign the cached OST-object's EA with the given value.
+ *
+ * If the current EA entry in cache has not enough space to hold the new
+ * value, remove it, create a new one, then assign with the given value.
+ *
+ * \param[in] obj pointer to the OSP object
+ * \param[in] oxe pointer to the cached EA entry to be assigned
+ * \param[in] buf pointer to the buffer with new EA value
+ *
+ * \retval pointer to the new created EA entry in cache if
+ * current entry is not big enough; otherwise, the
+ * input 'oxe' will be returned.
+ */
static struct osp_xattr_entry *
-osp_oac_xattr_replace(struct osp_object *obj,
- struct osp_xattr_entry **poxe, int len)
+osp_oac_xattr_assignment(struct osp_object *obj, struct osp_xattr_entry *oxe,
+ const struct lu_buf *buf)
{
- struct osp_object_attr *ooa = obj->opo_ooa;
- struct osp_xattr_entry *old = *poxe;
- struct osp_xattr_entry *oxe;
- struct osp_xattr_entry *tmp = NULL;
- int namelen = old->oxe_namelen;
- int 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, old->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);
+ struct osp_xattr_entry *new = NULL;
+ struct osp_xattr_entry *old = NULL;
+ int namelen = oxe->oxe_namelen;
+ size_t size = sizeof(*oxe) + namelen + 1 + buf->lb_len;
+ bool unlink_only = false;
+
+ if (oxe->oxe_buflen < size) {
+ OBD_ALLOC_LARGE(new, size);
+ if (likely(new)) {
+ INIT_LIST_HEAD(&new->oxe_list);
+ new->oxe_buflen = size;
+ new->oxe_namelen = namelen;
+ memcpy(new->oxe_buf, oxe->oxe_buf, namelen);
+ new->oxe_value = new->oxe_buf + namelen + 1;
+ /* One ref is for the caller,
+ * the other is for the entry on the list. */
+ atomic_set(&new->oxe_ref, 2);
+ __osp_oac_xattr_assignment(obj, new, buf);
+ } else {
+ unlink_only = true;
+ CWARN("%s: cannot update cached xattr %.*s of "DFID"\n",
+ osp_dto2name(obj), namelen, oxe->oxe_buf,
+ PFID(lu_object_fid(&obj->opo_obj.do_lu)));
+ }
+ }
spin_lock(&obj->opo_lock);
- tmp = osp_oac_xattr_find_locked(ooa, oxe->oxe_buf, namelen, true);
- list_add_tail(&oxe->oxe_list, &ooa->ooa_xattr_list);
- spin_unlock(&obj->opo_lock);
+ old = osp_oac_xattr_find_locked(obj, oxe->oxe_buf, namelen);
+ if (likely(old)) {
+ if (new) {
+ /* Unlink the 'old'. */
+ list_del_init(&old->oxe_list);
- *poxe = tmp;
- LASSERT(tmp != NULL);
+ /* Drop the ref for 'old' on list. */
+ osp_oac_xattr_put(old);
- return oxe;
-}
+ /* Drop the ref for current using. */
+ osp_oac_xattr_put(oxe);
+ oxe = new;
-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));
+ /* Insert 'new' into list. */
+ list_add_tail(&new->oxe_list, &obj->opo_xattr_list);
+ } else if (unlink_only) {
+ /* Unlink the 'old'. */
+ list_del_init(&old->oxe_list);
+
+ /* Drop the ref for 'old' on list. */
+ osp_oac_xattr_put(old);
+ } else {
+ __osp_oac_xattr_assignment(obj, oxe, buf);
+ }
+ } else if (new) {
+ /* Drop the ref for current using. */
+ osp_oac_xattr_put(oxe);
+ oxe = new;
- OBD_FREE(oxe, oxe->oxe_buflen);
+ /* Someone unlinked the 'old' by race,
+ * insert the 'new' one into list. */
+ list_add_tail(&new->oxe_list, &obj->opo_xattr_list);
}
+ spin_unlock(&obj->opo_lock);
+
+ return oxe;
}
+/**
+ * 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 update_reply *reply,
+ struct object_update_reply *reply,
+ struct ptlrpc_request *req,
struct lu_attr *attr,
struct osp_object *obj, int index)
{
struct lu_buf *rbuf = &osi->osi_lb2;
struct obdo *lobdo = &osi->osi_obdo;
struct obdo *wobdo;
- int rc;
+ int rc;
- rc = update_get_reply_buf(reply, rbuf, index);
+ rc = object_update_result_data_get(reply, rbuf, index);
if (rc < 0)
return rc;
if (rbuf->lb_len != sizeof(*wobdo))
return -EPROTO;
- obdo_le_to_cpu(wobdo, 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);
+ LASSERT(req != NULL);
+ if (ptlrpc_req_need_swab(req))
+ lustre_swab_obdo(wobdo);
- la_from_obdo(attr, lobdo, lobdo->o_valid);
+ lustre_get_wire_obdo(NULL, lobdo, wobdo);
+ if (obj) {
+ spin_lock(&obj->opo_lock);
+ la_from_obdo(&obj->opo_attr, lobdo, lobdo->o_valid);
+ spin_unlock(&obj->opo_lock);
}
- spin_unlock(&obj->opo_lock);
+ if (attr)
+ la_from_obdo(attr, lobdo, lobdo->o_valid);
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 update_reply *reply,
+ 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, NULL, obj, index);
+ 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;
return 0;
}
-static int osp_declare_attr_get(const struct lu_env *env, struct dt_object *dt,
- struct lustre_capa *capa)
+/**
+ * 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
+ *
+ * \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 osp_object *obj = dt2osp_obj(dt);
struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
- struct update_request *update;
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);
- update = osp_find_or_create_async_update_request(osp);
- if (IS_ERR(update))
- rc = PTR_ERR(update);
- else
- rc = osp_insert_async_update(env, update, OBJ_ATTR_GET, obj, 0,
- NULL, NULL,
- &obj->opo_ooa->ooa_attr,
- osp_attr_get_interpterer);
+ rc = osp_insert_async_request(env, OUT_ATTR_GET, obj, 0, NULL, NULL,
+ &obj->opo_attr, sizeof(struct obdo),
+ 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
+ *
+ * \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 lu_attr *attr)
{
- 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 update_request *update;
- struct update_reply *reply;
- struct ptlrpc_request *req = NULL;
- int rc = 0;
+ 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 osp_update_request *update;
+ struct object_update_reply *reply;
+ struct ptlrpc_request *req = NULL;
+ int invalidated, cache = 0, 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_lock(&obj->opo_lock);
+ if (obj->opo_attr.la_valid != 0 && !obj->opo_stale) {
+ *attr = obj->opo_attr;
spin_unlock(&obj->opo_lock);
+
+ RETURN(0);
}
+ spin_unlock(&obj->opo_lock);
- update = out_create_update_req(dev);
+ update = osp_update_request_create(dev);
if (IS_ERR(update))
RETURN(PTR_ERR(update));
- rc = out_insert_update(env, update, OBJ_ATTR_GET,
- lu_object_fid(&dt->do_lu), 0, NULL, NULL);
+ rc = OSP_UPDATE_RPC_PACK(env, out_attr_get_pack, update,
+ 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);
+ GOTO(out_req, rc);
+ }
+
+ invalidated = atomic_read(&obj->opo_invalidate_seq);
+
+ rc = osp_remote_sync(env, osp, update, &req);
+
+ down_read(&obj->opo_invalidate_sem);
+ if (invalidated == atomic_read(&obj->opo_invalidate_seq)) {
+ /* no invalited has came so far, we can cache the attrs */
+ cache = 1;
}
- 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;
+ if (cache)
+ 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,
osp2lu_obj(obj)->lo_header->loh_attr |= LOHA_EXISTS;
obj->opo_non_exist = 0;
- reply = req_capsule_server_sized_get(&req->rq_pill, &RMF_UPDATE_REPLY,
- UPDATE_BUFFER_SIZE);
- if (reply == NULL || reply->ur_version != UPDATE_REPLY_V1)
+ 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, attr, obj, 0);
+ rc = osp_get_attr_from_reply(env, reply, req, attr,
+ cache ? obj : NULL, 0);
if (rc != 0)
GOTO(out, rc);
- if (!is_ost_obj(&dt->do_lu)) {
- if (attr->la_flags == 1)
- obj->opo_empty = 0;
- else
- obj->opo_empty = 1;
- }
+ spin_lock(&obj->opo_lock);
+ if (cache)
+ obj->opo_stale = 0;
+ spin_unlock(&obj->opo_lock);
- GOTO(out, rc = 0);
+ GOTO(out, rc);
out:
+ up_read(&obj->opo_invalidate_sem);
+
+out_req:
if (req != NULL)
ptlrpc_req_finished(req);
- out_destroy_update_req(update);
+ osp_update_request_destroy(env, update);
return rc;
}
+/**
+ * Implement OSP layer dt_object_operations::do_declare_attr_set() interface.
+ *
+ * If the transaction is not remote one, then declare the credits that will
+ * be used for the subsequent llog record for the object's attributes.
+ *
+ * \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)
{
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;
+ int rc;
+ if (is_only_remote_trans(th))
+ return osp_md_declare_attr_set(env, dt, attr, th);
/*
* 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:
*
LASSERT(!dt_object_exists(dt));
osp_object_assign_fid(env, d, o);
rc = osp_object_truncate(env, dt, attr->la_size);
- if (rc)
+ if (rc != 0)
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)))
+ if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
RETURN(0);
- /*
- * track all UID/GID changes via llog
- */
+ /* track all UID/GID, projid, and layout version changes via llog */
rc = osp_sync_declare_add(env, o, MDS_SETATTR64_REC, th);
- if (rc != 0 || o->opo_ooa == NULL)
- RETURN(rc);
- 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);
+ return 0;
}
+/**
+ * Implement OSP layer dt_object_operations::do_attr_set() interface.
+ *
+ * Set attribute to the specified OST object.
+ *
+ * If the transaction is a remote one, then add OUT_ATTR_SET sub-request
+ * in the OUT RPC that will be flushed when the remote transaction stop.
+ * Otherwise, it will generate a MDS_SETATTR64_REC record in the llog that
+ * will be handled by a dedicated thread 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
+ *
+ * \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)
+ const struct lu_attr *attr, struct thandle *th)
{
struct osp_object *o = dt2osp_obj(dt);
int rc = 0;
-
ENTRY;
- /* we're interested in uid/gid changes only */
- if (!(attr->la_valid & (LA_UID | LA_GID)))
+ /* we're interested in uid/gid/projid/layout version changes only */
+ if (!(attr->la_valid & LA_REMOTE_ATTR_SET))
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)) {
+ if (attr->la_flags & LUSTRE_SET_SYNC_FL) {
+ struct ptlrpc_request *req = NULL;
+ struct osp_update_request *update = NULL;
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+
+ update = osp_update_request_create(&osp->opd_dt_dev);
+ if (IS_ERR(update))
+ RETURN(PTR_ERR(update));
+
+ rc = OSP_UPDATE_RPC_PACK(env, out_attr_set_pack, update,
+ lu_object_fid(&dt->do_lu),
+ attr);
+ if (rc != 0) {
+ CERROR("%s: update error "DFID": rc = %d\n",
+ osp->opd_obd->obd_name,
+ PFID(lu_object_fid(&dt->do_lu)), rc);
+
+ osp_update_request_destroy(env, update);
+ RETURN(rc);
+ }
- /*
- * 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);
+ rc = osp_remote_sync(env, osp, update, &req);
+ if (req != NULL)
+ ptlrpc_req_finished(req);
+
+ osp_update_request_destroy(env, update);
+ } else {
+ rc = osp_sync_add(env, o, MDS_SETATTR64_REC, th, attr);
+ /* XXX: send new uid/gid to OST ASAP? */
+ }
+ } else {
+ struct lu_attr *la;
+
+ /* 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);
+ CDEBUG(D_INFO, "(1) set attr "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+
+ if (rc != 0)
+ RETURN(rc);
+
+ /* Update the OSP object attributes cache. */
+ la = &o->opo_attr;
+ spin_lock(&o->opo_lock);
+ if (attr->la_valid & LA_UID) {
+ la->la_uid = attr->la_uid;
+ la->la_valid |= LA_UID;
+ }
- /* XXX: send new uid/gid to OST ASAP? */
+ if (attr->la_valid & LA_GID) {
+ la->la_gid = attr->la_gid;
+ la->la_valid |= LA_GID;
+ }
+ if (attr->la_valid & LA_PROJID) {
+ la->la_projid = attr->la_projid;
+ la->la_valid |= LA_PROJID;
+ }
+ spin_unlock(&o->opo_lock);
+ }
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 update_reply *reply,
+ 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;
+ struct osp_xattr_entry *oxe = data;
- LASSERT(ooa != NULL);
+ spin_lock(&obj->opo_lock);
+ if (rc >= 0) {
+ struct lu_buf *rbuf = &osp_env_info(env)->osi_lb2;
+ size_t len = sizeof(*oxe) + oxe->oxe_namelen + 1;
- if (rc == 0) {
- int len = sizeof(*oxe) + oxe->oxe_namelen + 1;
+ rc = object_update_result_data_get(reply, rbuf, index);
+ if (rc == -ENOENT || rc == -ENODATA || rc == 0) {
+ oxe->oxe_exist = 0;
+ oxe->oxe_ready = 1;
+ goto unlock;
+ }
- rc = update_get_reply_buf(reply, rbuf, index);
- if (rc < 0 || rbuf->lb_len > (oxe->oxe_buflen - len)) {
- spin_lock(&obj->opo_lock);
+ if (unlikely(rc < 0) ||
+ rbuf->lb_len > (oxe->oxe_buflen - len)) {
oxe->oxe_ready = 0;
- spin_unlock(&obj->opo_lock);
- osp_oac_xattr_put(oxe);
-
- return rc < 0 ? rc : -ERANGE;
+ goto unlock;
}
- 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);
+ __osp_oac_xattr_assignment(obj, oxe, rbuf);
} 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);
}
+unlock:
+ spin_unlock(&obj->opo_lock);
+
+ /* Put the reference obtained in the osp_declare_xattr_get(). */
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
+ *
+ * \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 lu_buf *buf, const char *name)
{
struct osp_object *obj = dt2osp_obj(dt);
struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
- struct update_request *update;
struct osp_xattr_entry *oxe;
- int namelen = strlen(name);
int rc = 0;
+ __u16 len;
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;
- }
+ return -EINVAL;
oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
if (oxe == NULL)
return -ENOMEM;
+ len = strlen(name) + 1;
mutex_lock(&osp->opd_async_requests_mutex);
- update = osp_find_or_create_async_update_request(osp);
- if (IS_ERR(update)) {
- rc = PTR_ERR(update);
+ rc = osp_insert_async_request(env, OUT_XATTR_GET, obj, 1,
+ &len, (const void **)&name,
+ oxe, buf->lb_len,
+ osp_xattr_get_interpterer);
+ if (rc != 0) {
mutex_unlock(&osp->opd_async_requests_mutex);
osp_oac_xattr_put(oxe);
} else {
- rc = osp_insert_async_update(env, update, OBJ_XATTR_GET, obj,
- 1, &namelen, &name, oxe,
- osp_xattr_get_interpterer);
- if (rc != 0) {
+ struct osp_update_request *our;
+ struct osp_update_request_sub *ours;
+
+ /* 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. */
+ our = osp->opd_async_requests;
+ ours = osp_current_object_update_request(our);
+ if (ours != NULL && ours->ours_req != NULL &&
+ ours->ours_req->ourq_count > 0) {
+ osp->opd_async_requests = NULL;
mutex_unlock(&osp->opd_async_requests_mutex);
- osp_oac_xattr_put(oxe);
+ rc = osp_unplug_async_request(env, osp, our);
} else {
- /* 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->ur_buf != NULL &&
- update->ur_buf->ub_count > 0) {
- osp->opd_async_requests = NULL;
- mutex_unlock(&osp->opd_async_requests_mutex);
- rc = osp_unplug_async_update(env, osp, update);
- } else {
- mutex_unlock(&osp->opd_async_requests_mutex);
- }
+ 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
+ *
+ * \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 lu_buf *buf, const char *name)
{
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 update_request *update = NULL;
+ struct osp_update_request *update = NULL;
struct ptlrpc_request *req = NULL;
- struct update_reply *reply;
+ struct object_update_reply *reply;
struct osp_xattr_entry *oxe = NULL;
- const char *dname = dt->do_lu.lo_dev->ld_obd->obd_name;
- int namelen;
- int rc = 0;
+ const char *dname = osp_dto2name(obj);
+ int invalidated, 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);
+ invalidated = atomic_read(&obj->opo_invalidate_seq);
+
+ oxe = osp_oac_xattr_find(obj, name, false);
if (oxe != NULL) {
spin_lock(&obj->opo_lock);
if (oxe->oxe_ready) {
if (buf->lb_len < oxe->oxe_vallen)
GOTO(unlock, rc = -ERANGE);
- memcpy(buf->lb_buf, oxe->oxe_value, oxe->oxe_vallen);
+ memcpy(buf->lb_buf, oxe->oxe_value,
+ oxe->oxe_vallen);
GOTO(unlock, rc = oxe->oxe_vallen);
}
spin_unlock(&obj->opo_lock);
}
-
- update = out_create_update_req(dev);
+ update = osp_update_request_create(dev);
if (IS_ERR(update))
- GOTO(out, rc = PTR_ERR(update));
+ GOTO(out_req, rc = PTR_ERR(update));
- namelen = strlen(name);
- rc = out_insert_update(env, update, OBJ_XATTR_GET,
- lu_object_fid(&dt->do_lu), 1, &namelen, &name);
+ rc = OSP_UPDATE_RPC_PACK(env, out_xattr_get_pack, update,
+ lu_object_fid(&dt->do_lu), name, buf->lb_len);
if (rc != 0) {
CERROR("%s: Insert update error "DFID": rc = %d\n",
dname, PFID(lu_object_fid(&dt->do_lu)), rc);
+ GOTO(out_req, rc);
+ }
+ rc = osp_remote_sync(env, osp, update, &req);
+
+ down_read(&obj->opo_invalidate_sem);
+ if (invalidated != atomic_read(&obj->opo_invalidate_seq)) {
+ /* invalidated has been requested, we can't cache the result */
+ if (rc < 0) {
+ if (rc == -ENOENT)
+ dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
+ 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);
GOTO(out, rc);
}
- rc = out_remote_sync(env, osp->opd_obd->u.cli.cl_import, update, &req);
- if (rc != 0) {
- if (obj->opo_ooa == NULL)
- GOTO(out, rc);
+ if (rc < 0) {
+ if (rc == -ENOENT) {
+ dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
+ obj->opo_non_exist = 1;
+ }
if (oxe == NULL)
oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
GOTO(out, rc);
}
- reply = req_capsule_server_sized_get(&req->rq_pill, &RMF_UPDATE_REPLY,
- UPDATE_BUFFER_SIZE);
- if (reply->ur_version != UPDATE_REPLY_V1) {
+ 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->ur_version, UPDATE_REPLY_V1,
+ dname, reply->ourp_magic, UPDATE_REPLY_MAGIC,
PFID(lu_object_fid(&dt->do_lu)), -EPROTO);
GOTO(out, rc = -EPROTO);
}
- rc = update_get_reply_buf(reply, rbuf, 0);
- if (rc < 0)
- GOTO(out, rc);
-
- LASSERT(rbuf->lb_len > 0 && rbuf->lb_len < PAGE_CACHE_SIZE);
+ rc = object_update_result_data_get(reply, rbuf, 0);
+ if (rc < 0 || rbuf->lb_len == 0) {
+ if (oxe == NULL && rc == -ENODATA) {
+ oxe = osp_oac_xattr_find_or_add(obj, name, buf->lb_len);
+ if (oxe == NULL) {
+ rc = -ENOMEM;
+ 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);
+ }
+ }
- if (buf->lb_buf == NULL)
- GOTO(out, rc = rbuf->lb_len);
+ if (oxe) {
+ spin_lock(&obj->opo_lock);
+ if (unlikely(rc == -ENODATA)) {
+ oxe->oxe_exist = 0;
+ oxe->oxe_ready = 1;
+ } else {
+ oxe->oxe_ready = 0;
+ }
+ spin_unlock(&obj->opo_lock);
+ }
- if (unlikely(buf->lb_len < rbuf->lb_len))
- GOTO(out, rc = -ERANGE);
+ GOTO(out, rc);
+ }
- memcpy(buf->lb_buf, rbuf->lb_buf, rbuf->lb_len);
- rc = rbuf->lb_len;
- if (obj->opo_ooa == NULL)
+ /* For detecting EA size. */
+ if (!buf->lb_buf)
GOTO(out, rc);
- if (oxe == NULL) {
+ if (!oxe) {
oxe = osp_oac_xattr_find_or_add(obj, name, rbuf->lb_len);
- if (oxe == NULL) {
+ if (!oxe) {
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);
}
}
- if (oxe->oxe_buflen - oxe->oxe_namelen - 1 < rbuf->lb_len) {
- struct osp_xattr_entry *old = oxe;
- struct osp_xattr_entry *tmp;
+ oxe = osp_oac_xattr_assignment(obj, oxe, rbuf);
- 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);
- oxe->oxe_ready = 0;
- spin_unlock(&obj->opo_lock);
+ GOTO(out, rc);
- GOTO(out, rc);
- }
+out:
+ up_read(&obj->opo_invalidate_sem);
- /* Drop the ref for entry on list. */
- osp_oac_xattr_put(old);
+out_req:
+ if (rc > 0 && buf->lb_buf) {
+ if (unlikely(buf->lb_len < rbuf->lb_len))
+ rc = -ERANGE;
+ else
+ memcpy(buf->lb_buf, rbuf->lb_buf, rbuf->lb_len);
}
- 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)
+ if (req)
ptlrpc_req_finished(req);
- if (update != NULL && !IS_ERR(update))
- out_destroy_update_req(update);
+ if (update && !IS_ERR(update))
+ osp_update_request_destroy(env, update);
- if (oxe != NULL)
+ if (oxe)
osp_oac_xattr_put(oxe);
return rc;
}
+/**
+ * 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.
+ *
+ * If it is non-remote transaction, it will add an OUT_XATTR_SET sub-request
+ * to the OUT RPC that will be flushed when the transaction start. And 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] 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)
{
- struct osp_object *o = dt2osp_obj(dt);
- struct update_request *update;
- struct lu_fid *fid;
- struct osp_xattr_entry *oxe;
- int sizes[3] = {strlen(name), buf->lb_len,
- sizeof(int)};
- char *bufs[3] = {(char *)name, (char *)buf->lb_buf };
- int rc;
+ return osp_trans_update_request_create(th);
+}
- LASSERT(buf->lb_len > 0 && buf->lb_buf != NULL);
+/**
+ * Implement OSP layer dt_object_operations::do_xattr_set() interface.
+ *
+ * Set extended attribute to the specified MDT/OST object.
+ *
+ * Add an OUT_XATTR_SET sub-request into the OUT RPC that will be flushed in
+ * the transaction stop. And 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
+ *
+ * \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 osp_object *o = dt2osp_obj(dt);
+ struct osp_update_request *update;
+ struct osp_xattr_entry *oxe;
+ int rc;
+ ENTRY;
- update = out_find_create_update_loc(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));
+ update = thandle_to_osp_update_request(th);
+ LASSERT(update != NULL);
- return PTR_ERR(update);
- }
+ CDEBUG(D_INODE, DFID" set xattr '%s' with size %zd\n",
+ PFID(lu_object_fid(&dt->do_lu)), name, buf->lb_len);
- flag = cpu_to_le32(flag);
- bufs[2] = (char *)&flag;
+ rc = OSP_UPDATE_RPC_PACK(env, out_xattr_set_pack, update,
+ lu_object_fid(&dt->do_lu), buf, name, fl);
+ if (rc != 0)
+ RETURN(rc);
- fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
- rc = out_insert_update(env, update, OBJ_XATTR_SET, fid,
- ARRAY_SIZE(sizes), sizes, (const char **)bufs);
- if (rc != 0 || o->opo_ooa == NULL)
- return rc;
+ /* Do not cache linkEA that may be self-adjusted by peers
+ * under EA overflow case. */
+ if (strcmp(name, XATTR_NAME_LINK) == 0) {
+ oxe = osp_oac_xattr_find(o, name, true);
+ if (oxe != NULL)
+ osp_oac_xattr_put(oxe);
+
+ RETURN(0);
+ }
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
- ": rc = %d\n", dt->do_lu.lo_dev->ld_obd->obd_name,
- name, PFID(lu_object_fid(&dt->do_lu)), rc);
+ CWARN("%s: cannot cache xattr '%s' of "DFID"\n",
+ osp_dto2name(o), name, PFID(lu_object_fid(&dt->do_lu)));
- return 0;
+ 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);
+ oxe = osp_oac_xattr_assignment(o, oxe, buf);
+ if (oxe)
osp_oac_xattr_put(oxe);
- oxe = tmp;
- if (tmp == NULL) {
- CWARN("%s: Fail to update xattr (%s) to cache for "DFID
- ": rc = %d\n", dt->do_lu.lo_dev->ld_obd->obd_name,
- name, PFID(lu_object_fid(&dt->do_lu)), rc);
- spin_lock(&o->opo_lock);
- oxe->oxe_ready = 0;
- spin_unlock(&o->opo_lock);
- return 0;
- }
+ RETURN(0);
+}
+/**
+ * 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.
+ *
+ * If it is non-remote transaction, it will add an OUT_XATTR_DEL sub-request
+ * to the OUT RPC that will be flushed when the transaction start. And 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
+ *
+ * \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)
+{
+ return osp_trans_update_request_create(th);
+}
+
+/**
+ * Implement OSP layer dt_object_operations::do_xattr_del() interface.
+ *
+ * Delete extended attribute on the specified MDT/OST object.
+ *
+ * If it is remote transaction, it will add an OUT_XATTR_DEL sub-request into
+ * the OUT RPC that will be flushed when the transaction stop. And 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
+ *
+ * \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 osp_update_request *update;
+ const struct lu_fid *fid = lu_object_fid(&dt->do_lu);
+ struct osp_object *o = dt2osp_obj(dt);
+ struct osp_xattr_entry *oxe;
+ int rc;
+
+ update = thandle_to_osp_update_request(th);
+ LASSERT(update != NULL);
+
+ rc = OSP_UPDATE_RPC_PACK(env, out_xattr_del_pack, update, fid, name);
+ if (rc != 0)
+ return rc;
+
+ oxe = osp_oac_xattr_find(o, name, true);
+ if (oxe != NULL)
/* Drop the ref for entry on list. */
- osp_oac_xattr_put(old);
+ osp_oac_xattr_put(oxe);
+
+ return 0;
+}
+
+void osp_obj_invalidate_cache(struct osp_object *obj)
+{
+ struct osp_xattr_entry *oxe;
+ struct osp_xattr_entry *tmp;
+
+ spin_lock(&obj->opo_lock);
+ list_for_each_entry_safe(oxe, tmp, &obj->opo_xattr_list, oxe_list) {
+ oxe->oxe_ready = 0;
+ list_del_init(&oxe->oxe_list);
+ osp_oac_xattr_put(oxe);
}
+ obj->opo_attr.la_valid = 0;
+ spin_unlock(&obj->opo_lock);
+}
- 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);
+/**
+ * Implement OSP layer dt_object_operations::do_invalidate() interface.
+ *
+ * Invalidate attributes cached on the specified MDT/OST object.
+ *
+ * \param[in] env pointer to the thread context
+ * \param[in] dt pointer to the OSP layer dt_object
+ *
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+int osp_invalidate(const struct lu_env *env, struct dt_object *dt)
+{
+ struct osp_object *obj = dt2osp_obj(dt);
+ ENTRY;
- return 0;
+ CDEBUG(D_HA, "Invalidate osp_object "DFID"\n",
+ PFID(lu_object_fid(&dt->do_lu)));
+
+ /* serialize attr/EA set vs. invalidation */
+ down_write(&obj->opo_invalidate_sem);
+
+ /* this should invalidate all in-flights */
+ atomic_inc(&obj->opo_invalidate_seq);
+
+ spin_lock(&obj->opo_lock);
+ /* do not mark new objects stale */
+ if (obj->opo_attr.la_valid)
+ obj->opo_stale = 1;
+ obj->opo_non_exist = 0;
+ spin_unlock(&obj->opo_lock);
+
+ osp_obj_invalidate_cache(obj);
+
+ up_write(&obj->opo_invalidate_sem);
+
+ RETURN(0);
}
-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)
+bool osp_check_stale(struct dt_object *dt)
{
- CDEBUG(D_INFO, "xattr %s set object "DFID"\n", name,
- PFID(&dt->do_lu.lo_header->loh_fid));
+ struct osp_object *obj = dt2osp_obj(dt);
- return 0;
+ if (is_ost_obj(&dt->do_lu) && obj->opo_non_exist)
+ return true;
+
+ return obj->opo_stale;
}
-static int osp_declare_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)
+
+/**
+ * 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 and the FID for the OST-object
+ * has been assigned already, then handle it as creating (remote) MDT object
+ * via osp_md_declare_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_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 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 = lu_object_fid(&dt->do_lu);
+ struct thandle *local_th;
int rc = 0;
ENTRY;
- if (is_remote_trans(th)) {
+ if (is_only_remote_trans(th) && !fid_is_zero(fid)) {
LASSERT(fid_is_sane(fid));
- rc = osp_md_declare_object_create(env, dt, attr, hint, dof, th);
+ rc = osp_md_declare_create(env, dt, attr, hint, dof, th);
RETURN(rc);
}
*/
/* rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th); */
+ local_th = osp_get_storage_thandle(env, th, d);
+ if (IS_ERR(local_th))
+ RETURN(PTR_ERR(local_th));
+
if (unlikely(!fid_is_zero(fid))) {
/* replay case: caller knows fid */
- osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
+ osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, NULL,
+ d->opd_index);
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,
+ local_th);
RETURN(rc);
}
o->opo_reserved = 1;
/* common for all OSPs file hystorically */
- osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
+ osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, NULL,
+ d->opd_index);
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,
+ local_th);
} else {
/* not needed in the cache anymore */
set_bit(LU_OBJECT_HEARD_BANSHEE,
RETURN(rc);
}
-static int osp_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)
+/**
+ * Implement OSP layer dt_object_operations::do_create() interface.
+ *
+ * Create the OST object.
+ *
+ * If the transaction is a remote transaction and the FID for the OST-object
+ * has been assigned already, then handle it as handling MDT object via the
+ * osp_md_create(). For other cases, 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_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 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);
int rc = 0;
struct lu_fid *fid = &osi->osi_fid;
+ struct thandle *local_th;
ENTRY;
- if (is_remote_trans(th)) {
+ if (is_only_remote_trans(th) &&
+ !fid_is_zero(lu_object_fid(&dt->do_lu))) {
LASSERT(fid_is_sane(lu_object_fid(&dt->do_lu)));
- rc = osp_md_object_create(env, dt, attr, hint, dof, th);
+ rc = osp_md_create(env, dt, attr, hint, dof, th);
if (rc == 0)
o->opo_non_exist = 0;
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 (osp_precreate_end_seq(env, d) && osp_is_fid_client(d))
th->th_sync = 1;
+ local_th = osp_get_storage_thandle(env, th, d);
+ if (IS_ERR(local_th))
+ RETURN(PTR_ERR(local_th));
/*
* it's OK if the import is inactive by this moment - id was created
* by OST earlier, we just need to maintain it consistently on the disk
if (d->opd_gap_count > 0) {
int count = d->opd_gap_count;
- ostid_set_id(&osi->osi_oi,
- fid_oid(&d->opd_gap_start_fid));
+ rc = ostid_set_id(&osi->osi_oi,
+ fid_oid(&d->opd_gap_start_fid));
+ if (rc) {
+ spin_unlock(&d->opd_pre_lock);
+ RETURN(rc);
+ }
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 */
}
}
- /* new object, the very first ->attr_set()
- * initializing attributes needs no logging */
- o->opo_new = 1;
-
/* Only need update last_used oid file, seq file will only be update
* during seq rollover */
osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off,
- &d->opd_last_used_fid.f_oid, d->opd_index);
+ &d->opd_last_id, d->opd_index);
rc = dt_record_write(env, d->opd_last_used_oid_file, &osi->osi_lb,
- &osi->osi_off, th);
+ &osi->osi_off, local_th);
CDEBUG(D_HA, "%s: Wrote last used FID: "DFID", index %d: %d\n",
d->opd_obd->obd_name, PFID(fid), d->opd_index, rc);
RETURN(rc);
}
-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_destroy(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
{
struct osp_object *o = dt2osp_obj(dt);
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
int rc = 0;
ENTRY;
- /*
- * track objects to be destroyed via llog
- */
- rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
+ LASSERT(!osp->opd_connect_mdt);
+
+ if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ))
+ rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
RETURN(rc);
}
-int osp_object_destroy(const struct lu_env *env, struct dt_object *dt,
+/**
+ * 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
+ */
+static int osp_destroy(const struct lu_env *env, struct dt_object *dt,
struct thandle *th)
{
struct osp_object *o = dt2osp_obj(dt);
+ struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
int rc = 0;
ENTRY;
o->opo_non_exist = 1;
- /*
- * once transaction is committed put proper command on
- * the queue going to our OST
- */
- rc = osp_sync_add(env, o, MDS_UNLINK64_REC, th, NULL);
+
+ LASSERT(!osp->opd_connect_mdt);
+
+ if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LOST_MDTOBJ)) {
+ /* once transaction is committed put proper command on
+ * the queue going to our OST. */
+ rc = osp_sync_add(env, o, MDS_UNLINK64_REC, th, NULL);
+ if (rc < 0)
+ RETURN(rc);
+ }
/* not needed in cache any more */
set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
RETURN(rc);
}
-struct dt_object_operations osp_obj_ops = {
+static int osp_orphan_index_lookup(const struct lu_env *env,
+ struct dt_object *dt,
+ struct dt_rec *rec,
+ const struct dt_key *key)
+{
+ 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)
+{
+ 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)
+{
+ 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
+ *
+ * \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 osp_it *it;
+
+ OBD_ALLOC_PTR(it);
+ if (it == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ it->ooi_pos_ent = -1;
+ it->ooi_obj = dt;
+ it->ooi_attr = attr;
+
+ 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_PTR_ARRAY(pages, npages);
+ }
+ 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 transferred.
+ *
+ * \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_SIZE;
+
+ OBD_ALLOC_PTR_ARRAY(pages, npages);
+ 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_NOFS);
+ 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);
+ }
+
+ osp_set_req_replay(osp, req);
+ 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;
+ ii->ii_attrs = osp_dev2node(osp);
+ } 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_attrs = it->ooi_attr;
+ }
+ ii->ii_magic = IDX_INFO_MAGIC;
+ ii->ii_count = npages * LU_PAGE_COUNT;
+ ii->ii_hash_start = it->ooi_next;
+
+ ptlrpc_at_set_req_timeout(req);
+
+ desc = ptlrpc_prep_bulk_imp(req, npages, 1,
+ PTLRPC_BULK_PUT_SINK,
+ MDS_BULK_PORTAL,
+ &ptlrpc_bulk_kiov_pin_ops);
+ if (desc == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ for (i = 0; i < npages; i++)
+ desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
+ PAGE_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_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_rec_size = ii->ii_recsize;
+ 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 positive for end of the directory
+ * \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_PTR_ARRAY(pages, it->ooi_total_npages);
+
+ 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 positive for end of the directory
+ * \retval 0 for success
+ * \retval negative error number on failure
+ */
+static 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) {
+ if (it->ooi_rec_size ==
+ sizeof(struct lu_orphan_rec_v3)) {
+ it->ooi_ent =
+ (struct lu_orphan_ent_v3 *)idxpage->lip_entries+
+ it->ooi_pos_ent;
+ if (it->ooi_swab)
+ lustre_swab_orphan_ent_v3(it->ooi_ent);
+ } else if (it->ooi_rec_size ==
+ sizeof(struct lu_orphan_rec_v2)) {
+ it->ooi_ent =
+ (struct lu_orphan_ent_v2 *)idxpage->lip_entries+
+ it->ooi_pos_ent;
+ if (it->ooi_swab)
+ lustre_swab_orphan_ent_v2(it->ooi_ent);
+ } else {
+ 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)
+{
+}
+
+static 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;
+}
+
+static int osp_orphan_it_key_size(const struct lu_env *env,
+ const struct dt_it *di)
+{
+ return sizeof(struct lu_fid);
+}
+
+static 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;
+
+ if (likely(it->ooi_ent)) {
+ if (it->ooi_rec_size == sizeof(struct lu_orphan_rec_v3)) {
+ struct lu_orphan_ent_v3 *ent =
+ (struct lu_orphan_ent_v3 *)it->ooi_ent;
+
+ *(struct lu_orphan_rec_v3 *)rec = ent->loe_rec;
+ } else if (it->ooi_rec_size ==
+ sizeof(struct lu_orphan_rec_v2)) {
+ struct lu_orphan_ent_v2 *ent =
+ (struct lu_orphan_ent_v2 *)it->ooi_ent;
+
+ *(struct lu_orphan_rec_v2 *)rec = ent->loe_rec;
+ } else {
+ struct lu_orphan_ent *ent =
+ (struct lu_orphan_ent *)it->ooi_ent;
+
+ *(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;
+}
+
+static 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_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_declare_create = osp_declare_create,
+ .do_create = osp_create,
+ .do_declare_destroy = osp_declare_destroy,
+ .do_destroy = osp_destroy,
+ .do_index_try = osp_index_try,
};
+/**
+ * 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)
{
spin_lock_init(&po->opo_lock);
o->lo_header->loh_attr |= LOHA_REMOTE;
+ INIT_LIST_HEAD(&po->opo_xattr_list);
+ INIT_LIST_HEAD(&po->opo_invalidate_cb_list);
+ init_rwsem(&po->opo_invalidate_sem);
if (is_ost_obj(o)) {
po->opo_obj.do_ops = &osp_obj_ops;
struct lu_attr *la = &osp_env_info(env)->osi_attr;
po->opo_obj.do_ops = &osp_md_obj_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) {
+ po->opo_obj.do_body_ops = &osp_md_body_ops;
+
+ if (conf != NULL && conf->loc_flags & LOC_F_NEW) {
po->opo_non_exist = 1;
- rc = 0;
+ } else {
+ rc = po->opo_obj.do_ops->do_attr_get(env, lu2dt_obj(o),
+ la);
+ if (rc == 0)
+ o->lo_header->loh_attr |=
+ LOHA_EXISTS | (la->la_mode & S_IFMT);
+ if (rc == -ENOENT) {
+ po->opo_non_exist = 1;
+ rc = 0;
+ }
}
init_rwsem(&po->opo_sem);
}
RETURN(rc);
}
+static void osp_object_free_rcu(struct rcu_head *head)
+{
+ struct osp_object *obj = container_of(head, struct osp_object,
+ opo_header.loh_rcu);
+
+ kmem_cache_free(osp_object_kmem, obj);
+}
+
+/**
+ * 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);
struct lu_object_header *h = o->lo_header;
+ struct osp_xattr_entry *oxe;
+ struct osp_xattr_entry *tmp;
+ int count;
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, oxe->oxe_namelen, oxe->oxe_buf);
-
- OBD_FREE(oxe, oxe->oxe_buflen);
- }
- OBD_FREE_PTR(obj->opo_ooa);
+ list_for_each_entry_safe(oxe, tmp, &obj->opo_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_LARGE(oxe, oxe->oxe_buflen);
}
- OBD_SLAB_FREE_PTR(obj, osp_object_kmem);
+ OBD_FREE_PRE(obj, sizeof(*obj), "slab-freed");
+ call_rcu(&obj->opo_header.loh_rcu, osp_object_free_rcu);
}
+/**
+ * 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);
d->opd_pre_reserved--;
spin_unlock(&d->opd_pre_lock);
+ /*
+ * Check that osp_precreate_cleanup_orphans is not blocked
+ * due to opd_pre_reserved > 0.
+ */
+ if (unlikely(d->opd_pre_reserved == 0 &&
+ (d->opd_pre_recovering || d->opd_pre_status)))
+ wake_up(&d->opd_pre_waitq);
+
/* not needed in cache any more */
set_bit(LU_OBJECT_HEARD_BANSHEE, &o->lo_header->loh_flags);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff