* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel, Inc.
+ * Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include "osp_internal.h"
+static void osp_object_assign_fid(const struct lu_env *env,
+ struct osp_device *d, struct osp_object *o)
+{
+ struct osp_thread_info *osi = osp_env_info(env);
+
+ LASSERT(fid_is_zero(lu_object_fid(&o->opo_obj.do_lu)));
+ LASSERT(o->opo_reserved);
+ o->opo_reserved = 0;
+
+ osp_precreate_get_fid(env, d, &osi->osi_fid);
+
+ 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)
+{
+ struct osp_device *d = lu2osp_dev(dt->do_lu.lo_dev);
+ struct osp_object *o = dt2osp_obj(dt);
+ 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.
+ *
+ * In this case we do the following:
+ *
+ * 1) grab id in declare - this can lead to leaked OST objects
+ * but we don't currently have proper mechanism and the only
+ * options we have are to do truncate RPC holding transaction
+ * open (very bad) or to grab id in declare at cost of leaked
+ * OST object in same very rare unfortunate case (just bad)
+ * notice 1.6-2.0 do assignment outside of running transaction
+ * all the time, meaning many more chances for leaked objects.
+ *
+ * 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);
+
+ if (attr->la_valid & LA_SIZE && attr->la_size > 0) {
+ 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);
+
+ /*
+ * track all UID/GID changes via llog
+ */
+ rc = osp_sync_declare_add(env, o, MDS_SETATTR64_REC, th);
+
+ 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 lustre_capa *capa)
+{
+ 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)))
+ 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);
+ }
+
+ /*
+ * 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? */
+
+ RETURN(rc);
+}
+
+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)
+{
+ 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;
+ int rc = 0;
+
+ ENTRY;
+
+ /* 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 */
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_CREATE_FAIL) && d->opd_index == 1)
+ 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
+ * XXX: we do not handle gaps yet, implemented before solution
+ * was found to be racy, so we disabled that. there is no
+ * point in making useless but expensive llog declaration.
+ */
+ /* rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th); */
+
+ if (unlikely(!fid_is_zero(fid))) {
+ /* replay case: caller knows fid */
+ osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
+ rc = dt_declare_record_write(env, d->opd_last_used_oid_file,
+ sizeof(osi->osi_id), osi->osi_off,
+ th);
+ RETURN(rc);
+ }
+
+ /*
+ * in declaration we need to reserve object so that we don't block
+ * awaiting precreation RPC to complete
+ */
+ rc = osp_precreate_reserve(env, d);
+ /*
+ * we also need to declare update to local "last used id" file for
+ * recovery if object isn't used for a reason, we need to release
+ * reservation, this can be made in osd_object_release()
+ */
+ if (rc == 0) {
+ /* mark id is reserved: in create we don't want to talk
+ * to OST */
+ LASSERT(o->opo_reserved == 0);
+ o->opo_reserved = 1;
+
+ /* common for all OSPs file hystorically */
+ osi->osi_off = sizeof(osi->osi_id) * d->opd_index;
+ rc = dt_declare_record_write(env, d->opd_last_used_oid_file,
+ sizeof(osi->osi_id), osi->osi_off,
+ th);
+ } else {
+ /* not needed in the cache anymore */
+ set_bit(LU_OBJECT_HEARD_BANSHEE,
+ &dt->do_lu.lo_header->loh_flags);
+ }
+ 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)
+{
+ 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;
+ ENTRY;
+
+ if (o->opo_reserved) {
+ /* regular case, fid is assigned holding trunsaction open */
+ osp_object_assign_fid(env, d, o);
+ }
+
+ memcpy(fid, lu_object_fid(&dt->do_lu), sizeof(*fid));
+
+ LASSERTF(fid_is_sane(fid), "fid for osp_obj %p is insane"DFID"!\n",
+ osp_obj, PFID(fid));
+
+ if (!o->opo_reserved) {
+ /* special case, id was assigned outside of transaction
+ * see comments in osp_declare_attr_set */
+ spin_lock(&d->opd_pre_lock);
+ osp_update_last_fid(d, fid);
+ spin_unlock(&d->opd_pre_lock);
+ }
+
+ CDEBUG(D_INODE, "fid for osp_obj %p is "DFID"!\n", osp_obj, PFID(fid));
+
+ /* If the precreate ends, it means it will be ready to rollover to
+ * the new sequence soon, all the creation should be synchronized,
+ * otherwise during replay, the replay fid will be inconsistent with
+ * last_used/create fid */
+ if (osp_precreate_end_seq(env, d) && osp_is_fid_client(d))
+ th->th_sync = 1;
+
+ /*
+ * 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
+ * once import is reconnected, OSP will claim this and other objects
+ * used and OST either keep them, if they exist or recreate
+ */
+
+ /* we might have lost precreated objects */
+ if (unlikely(d->opd_gap_count) > 0) {
+ spin_lock(&d->opd_pre_lock);
+ if (d->opd_gap_count > 0) {
+ int count = d->opd_gap_count;
+ osi->osi_oi.oi_id = fid_oid(&d->opd_gap_start_fid);
+ d->opd_gap_count = 0;
+ spin_unlock(&d->opd_pre_lock);
+
+ CDEBUG(D_HA, "Writting 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 */
+ } else {
+ spin_unlock(&d->opd_pre_lock);
+ }
+ }
+
+ /* 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);
+
+ rc = dt_record_write(env, d->opd_last_used_oid_file, &osi->osi_lb,
+ &osi->osi_off, 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);
+}
+
+static 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;
+
+ ENTRY;
+
+ /*
+ * track objects to be destroyed via llog
+ */
+ rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
+
+ RETURN(rc);
+}
+
+static 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;
+
+ /*
+ * 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);
+
+ /* 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 = {
+ .do_declare_attr_set = osp_declare_attr_set,
+ .do_attr_set = osp_attr_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,
};
+static int is_ost_obj(struct lu_object *lo)
+{
+ struct osp_device *osp = lu2osp_dev(lo->lo_dev);
+
+ return !osp->opd_connect_mdt;
+}
+
static int osp_object_init(const struct lu_env *env, struct lu_object *o,
- const struct lu_object_conf *unused)
+ const struct lu_object_conf *conf)
{
- struct osp_object *po = lu2osp_obj(o);
+ struct osp_object *po = lu2osp_obj(o);
+ int rc = 0;
+ ENTRY;
- po->opo_obj.do_ops = &osp_obj_ops;
+ if (is_ost_obj(o)) {
+ po->opo_obj.do_ops = &osp_obj_ops;
+ } else {
+ struct lu_attr *la = &osp_env_info(env)->osi_attr;
- return 0;
+ po->opo_obj.do_ops = &osp_md_obj_ops;
+ o->lo_header->loh_attr |= LOHA_REMOTE;
+ /* Do not need get attr for new object */
+ if (!(conf != NULL && (conf->loc_flags & LOC_F_NEW) != 0)) {
+ 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)
+ rc = 0;
+ }
+ }
+ RETURN(rc);
}
static void osp_object_free(const struct lu_env *env, struct lu_object *o)
static void osp_object_release(const struct lu_env *env, struct lu_object *o)
{
- return;
+ struct osp_object *po = lu2osp_obj(o);
+ struct osp_device *d = lu2osp_dev(o->lo_dev);
+
+ ENTRY;
+
+ /*
+ * release reservation if object was declared but not created
+ * this may require lu_object_put() in LOD
+ */
+ if (unlikely(po->opo_reserved)) {
+ LASSERT(d->opd_pre_reserved > 0);
+ spin_lock(&d->opd_pre_lock);
+ d->opd_pre_reserved--;
+ spin_unlock(&d->opd_pre_lock);
+
+ /* not needed in cache any more */
+ set_bit(LU_OBJECT_HEARD_BANSHEE, &o->lo_header->loh_flags);
+ }
+ EXIT;
}
static int osp_object_print(const struct lu_env *env, void *cookie,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff