static int
ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
struct lu_fid *fid, int objcount, int niocount,
struct niobuf_local *lnb)
{
struct ofd_object *fo;
ENTRY;
LASSERT(niocount > 0);
fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo))
RETURN(PTR_ERR(fo));
LASSERT(fo != NULL);
LASSERT(ofd_object_exists(fo));
dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
/* second put is pair to object_get in ofd_preprw_read */
ofd_object_put(env, fo);
RETURN(0);
}
int ofd_object_ff_check(const struct lu_env *env, struct ofd_object *fo)
{
int rc = 0;
ENTRY;
if (!fo->ofo_ff_exists) {
/*
* This actually means that we don't know whether the object
* has the "fid" EA or not.
*/
rc = dt_xattr_get(env, ofd_object_child(fo), &LU_BUF_NULL,
XATTR_NAME_FID, BYPASS_CAPA);
if (rc >= 0 || rc == -ENODATA) {
/*
* Here we assume that, if the object doesn't have the
* "fid" EA, the caller will add one, unless a fatal
* error (e.g., a memory or disk failure) prevents it
* from doing so.
*/
fo->ofo_ff_exists = 1;
}
if (rc > 0)
rc = 0;
}
RETURN(rc);
}
/**
* Start transaction in OFD.
*
* This function updates the given \a obj object version and calls
* dt_trans_start().
*
* \param[in] env execution environment
* \param[in] ofd OFD device
* \param[in] obj OFD object affected by this transaction
* \param[in] th transaction handle
*
* \retval 0 if successful
* \retval negative value in case of error
*/
int ofd_trans_start(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *obj, struct thandle *th)
{
/* version change is required for this object */
if (obj != NULL)
tgt_vbr_obj_set(env, ofd_object_child(obj));
return dt_trans_start(env, ofd->ofd_osd, th);
}
int ofd_object_destroy(const struct lu_env *env, struct ofd_object *fo,
int orphan)
{
struct ofd_device *ofd = ofd_obj2dev(fo);
struct thandle *th;
int rc = 0;
ENTRY;
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
dt_declare_ref_del(env, ofd_object_child(fo), th);
dt_declare_destroy(env, ofd_object_child(fo), th);
if (orphan)
rc = dt_trans_start_local(env, ofd->ofd_osd, th);
else
rc = ofd_trans_start(env, ofd, NULL, th);
if (rc)
GOTO(stop, rc);
ofd_fmd_drop(ofd_info(env)->fti_exp, &fo->ofo_header.loh_fid);
dt_ref_del(env, ofd_object_child(fo), th);
dt_destroy(env, ofd_object_child(fo), th);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
RETURN(rc);
}
/*
* If the object still has SUID+SGID bits set (see ofd_precreate_object()) then
* we will accept the UID+GID if sent by the client for initializing the
* ownership of this object. We only allow this to happen once (so clear these
* bits) and later only allow setattr.
*/
int ofd_attr_handle_ugid(const struct lu_env *env, struct ofd_object *fo,
struct lu_attr *la, int is_setattr)
{
struct ofd_thread_info *info = ofd_info(env);
struct lu_attr *ln = &info->fti_attr2;
__u32 mask = 0;
int rc;
ENTRY;
if (!(la->la_valid & LA_UID) && !(la->la_valid & LA_GID))
RETURN(0);
rc = dt_attr_get(env, ofd_object_child(fo), ln, BYPASS_CAPA);
if (rc != 0)
RETURN(rc);
LASSERT(ln->la_valid & LA_MODE);
if (!is_setattr) {
if (!(ln->la_mode & S_ISUID))
la->la_valid &= ~LA_UID;
if (!(ln->la_mode & S_ISGID))
la->la_valid &= ~LA_GID;
}
if ((la->la_valid & LA_UID) && (ln->la_mode & S_ISUID))
mask |= S_ISUID;
if ((la->la_valid & LA_GID) && (ln->la_mode & S_ISGID))
mask |= S_ISGID;
if (mask != 0) {
if (!(la->la_valid & LA_MODE) || !is_setattr) {
la->la_mode = ln->la_mode;
la->la_valid |= LA_MODE;
}
la->la_mode &= ~mask;
}
RETURN(0);
}
int ofd_version_get_check(struct ofd_thread_info *info,
struct ofd_object *fo)
{
dt_obj_version_t curr_version;
LASSERT(ofd_object_exists(fo));
LASSERT(info->fti_exp);
curr_version = dt_version_get(info->fti_env, ofd_object_child(fo));
if ((__s64)curr_version == -EOPNOTSUPP)
RETURN(0);
/* VBR: version is checked always because costs nothing */
if (info->fti_pre_version != 0 &&
info->fti_pre_version != curr_version) {
CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
info->fti_pre_version, curr_version);
spin_lock(&info->fti_exp->exp_lock);
info->fti_exp->exp_vbr_failed = 1;
spin_unlock(&info->fti_exp->exp_lock);
RETURN (-EOVERFLOW);
}
info->fti_pre_version = curr_version;
RETURN(0);
}
/**
* Prepare buffers for write request processing.
*
* This function converts remote buffers from client to local buffers
* and prepares the latter. If there is recovery in progress and required
* object is missing then it can be re-created before write.
*
* \param[in] env execution environment
* \param[in] exp OBD export of client
* \param[in] ofd OFD device
* \param[in] fid FID of object
* \param[in] la object attributes
* \param[in] oa OBDO structure from client
* \param[in] objcount always 1
* \param[in] obj object data
* \param[in] rnb remote buffers
* \param[in] nr_local number of local buffers
* \param[in] lnb local buffers
* \param[in] jobid job ID name
*
* \retval 0 on successful prepare
* \retval negative value on error
*/
static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
struct ofd_device *ofd, const struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa,
int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb, char *jobid)
{
struct ofd_object *fo;
int i, j, k, rc = 0, tot_bytes = 0;
ENTRY;
LASSERT(env != NULL);
LASSERT(objcount == 1);
if (unlikely(exp->exp_obd->obd_recovering)) {
u64 seq = fid_seq(fid);
u64 oid = fid_oid(fid);
struct ofd_seq *oseq;
oseq = ofd_seq_load(env, ofd, seq);
if (IS_ERR(oseq)) {
CERROR("%s: Can't find FID Sequence "LPX64": rc = %d\n",
ofd_name(ofd), seq, (int)PTR_ERR(oseq));
GOTO(out, rc = -EINVAL);
}
if (oid > ofd_seq_last_oid(oseq)) {
int sync = 0;
int diff;
mutex_lock(&oseq->os_create_lock);
diff = oid - ofd_seq_last_oid(oseq);
/* Do sync create if the seq is about to used up */
if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
if (unlikely(oid >= IDIF_MAX_OID - 1))
sync = 1;
} else if (fid_seq_is_norm(seq)) {
if (unlikely(oid >=
LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
sync = 1;
} else {
CERROR("%s : invalid o_seq "DOSTID"\n",
ofd_name(ofd), POSTID(&oa->o_oi));
mutex_unlock(&oseq->os_create_lock);
ofd_seq_put(env, oseq);
GOTO(out, rc = -EINVAL);
}
while (diff > 0) {
u64 next_id = ofd_seq_last_oid(oseq) + 1;
int count = ofd_precreate_batch(ofd, diff);
rc = ofd_precreate_objects(env, ofd, next_id,
oseq, count, sync);
if (rc < 0) {
mutex_unlock(&oseq->os_create_lock);
ofd_seq_put(env, oseq);
GOTO(out, rc);
}
diff -= rc;
}
mutex_unlock(&oseq->os_create_lock);
}
ofd_seq_put(env, oseq);
}
fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo))
GOTO(out, rc = PTR_ERR(fo));
LASSERT(fo != NULL);
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo)) {
CERROR("%s: BRW to missing obj "DOSTID"\n",
exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
GOTO(out, rc = -ENOENT);
}
if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
rc = ofd_verify_ff(env, fo, oa);
if (rc != 0) {
ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
GOTO(out, rc);
}
}
/* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
* space back if possible */
ofd_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
/* parse remote buffers to local buffers and prepare the latter */
*nr_local = 0;
for (i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
rc = dt_bufs_get(env, ofd_object_child(fo),
rnb + i, lnb + j, 1);
if (unlikely(rc < 0))
GOTO(err, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
for (k = 0; k < rc; k++) {
lnb[j+k].lnb_flags = rnb[i].rnb_flags;
if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
lnb[j+k].lnb_rc = -ENOSPC;
}
j += rc;
*nr_local += rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
if (unlikely(rc != 0))
GOTO(err, rc);
ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid, tot_bytes);
RETURN(0);
err:
dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
/* ofd_grant_prepare_write() was called, so we must commit */
ofd_grant_commit(exp, oa->o_grant_used, rc);
out:
/* let's still process incoming grant information packed in the oa,
* but without enforcing grant since we won't proceed with the write.
* Just like a read request actually. */
ofd_grant_prepare_read(env, exp, oa);
return rc;
}
int ofd_object_punch(const struct lu_env *env, struct ofd_object *fo,
__u64 start, __u64 end, struct lu_attr *la,
struct filter_fid *ff, struct obdo *oa)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_obj2dev(fo);
struct ofd_mod_data *fmd;
struct dt_object *dob = ofd_object_child(fo);
struct thandle *th;
int ff_needed = 0;
int rc;
ENTRY;
/* we support truncate, not punch yet */
LASSERT(end == OBD_OBJECT_EOF);
fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
fmd->fmd_mactime_xid = info->fti_xid;
ofd_fmd_put(info->fti_exp, fmd);
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
rc = ofd_verify_ff(env, fo, oa);
if (rc != 0)
GOTO(unlock, rc);
}
/* VBR: version recovery check */
rc = ofd_version_get_check(info, fo);
if (rc)
GOTO(unlock, rc);
rc = ofd_attr_handle_ugid(env, fo, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(unlock, rc);
if (ff != NULL) {
rc = ofd_object_ff_load(env, fo);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(unlock, rc);
}
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
rc = dt_declare_attr_set(env, dob, la, th);
if (rc)
GOTO(stop, rc);
rc = dt_declare_punch(env, dob, start, OBD_OBJECT_EOF, th);
if (rc)
GOTO(stop, rc);
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, ofd_object_child(fo),
&info->fti_buf, XATTR_NAME_FID, 0,
th);
if (rc)
GOTO(stop, rc);
}
rc = ofd_trans_start(env, ofd, fo, th);
if (rc)
GOTO(stop, rc);
rc = dt_punch(env, dob, start, OBD_OBJECT_EOF, th,
ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, dob, la, th, ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
if (ff_needed) {
rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
XATTR_NAME_FID, 0, th, BYPASS_CAPA);
if (rc == 0) {
fo->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
fo->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
/* Currently, the filter_fid::ff_parent::f_ver is not
* the real parent MDT-object's FID::f_ver, instead it
* is the OST-object index in its parent MDT-object's
* layout EA. */
fo->ofo_pfid.f_stripe_idx =
le32_to_cpu(ff->ff_parent.f_stripe_idx);
}
}
GOTO(stop, rc);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
return rc;
}
int ofd_attr_set(const struct lu_env *env, struct ofd_object *fo,
struct lu_attr *la, struct filter_fid *ff)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_obj2dev(fo);
struct thandle *th;
struct ofd_mod_data *fmd;
int ff_needed = 0;
int rc;
ENTRY;
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
if (la->la_valid & (LA_ATIME | LA_MTIME | LA_CTIME)) {
fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
fmd->fmd_mactime_xid = info->fti_xid;
ofd_fmd_put(info->fti_exp, fmd);
}
/* VBR: version recovery check */
rc = ofd_version_get_check(info, fo);
if (rc)
GOTO(unlock, rc);
rc = ofd_attr_handle_ugid(env, fo, la, 1 /* is_setattr */);
if (rc != 0)
GOTO(unlock, rc);
if (ff != NULL) {
rc = ofd_object_ff_load(env, fo);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(unlock, rc);
}
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
rc = dt_declare_attr_set(env, ofd_object_child(fo), la, th);
if (rc)
GOTO(stop, rc);
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, ofd_object_child(fo),
&info->fti_buf, XATTR_NAME_FID, 0,
th);
if (rc)
GOTO(stop, rc);
}
rc = ofd_trans_start(env, ofd, la->la_valid & LA_SIZE ? fo : NULL, th);
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, ofd_object_child(fo), la, th,
ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
if (ff_needed) {
rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
XATTR_NAME_FID, 0, th, BYPASS_CAPA);
if (rc == 0) {
fo->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
fo->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
/* Currently, the filter_fid::ff_parent::f_ver is not
* the real parent MDT-object's FID::f_ver, instead it
* is the OST-object index in its parent MDT-object's
* layout EA. */
fo->ofo_pfid.f_stripe_idx =
le32_to_cpu(ff->ff_parent.f_stripe_idx);
}
}
GOTO(stop, rc);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
return rc;
}
int ofd_precreate_objects(const struct lu_env *env, struct ofd_device *ofd,
obd_id id, struct ofd_seq *oseq, int nr, int sync)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_object *fo = NULL;
struct dt_object *next;
struct thandle *th;
struct ofd_object **batch;
struct lu_fid *fid = &info->fti_fid;
obd_id tmp;
int rc;
int i;
int objects = 0;
int nr_saved = nr;
ENTRY;
/* Don't create objects beyond the valid range for this SEQ */
if (unlikely(fid_seq_is_mdt0(ostid_seq(&oseq->os_oi)) &&
(id + nr) >= IDIF_MAX_OID)) {
CERROR("%s:"DOSTID" hit the IDIF_MAX_OID (1<<48)!\n",
ofd_name(ofd), id, ostid_seq(&oseq->os_oi));
RETURN(rc = -ENOSPC);
} else if (unlikely(!fid_seq_is_mdt0(ostid_seq(&oseq->os_oi)) &&
(id + nr) >= OBIF_MAX_OID)) {
CERROR("%s:"DOSTID" hit the OBIF_MAX_OID (1<<32)!\n",
ofd_name(ofd), id, ostid_seq(&oseq->os_oi));
RETURN(rc = -ENOSPC);
}
OBD_ALLOC(batch, nr_saved * sizeof(struct ofd_object *));
if (batch == NULL)
RETURN(-ENOMEM);
info->fti_attr.la_valid = LA_TYPE | LA_MODE;
/*
* We mark object SUID+SGID to flag it for accepting UID+GID from
* client on first write. Currently the permission bits on the OST are
* never used, so this is OK.
*/
info->fti_attr.la_mode = S_IFREG | S_ISUID | S_ISGID | 0666;
info->fti_dof.dof_type = dt_mode_to_dft(S_IFREG);
/* Initialize a/c/m time so any client timestamp will always
* be newer and update the inode. ctime = 0 is also handled
* specially in osd_inode_setattr(). See LU-221, LU-1042 */
info->fti_attr.la_valid |= LA_ATIME | LA_MTIME | LA_CTIME;
info->fti_attr.la_atime = 0;
info->fti_attr.la_mtime = 0;
info->fti_attr.la_ctime = 0;
LASSERT(id != 0);
/* prepare objects */
*fid = *lu_object_fid(&oseq->os_lastid_obj->do_lu);
for (i = 0; i < nr; i++) {
rc = fid_set_id(fid, id + i);
if (rc != 0) {
if (i == 0)
GOTO(out, rc);
nr = i;
break;
}
fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo)) {
if (i == 0)
GOTO(out, rc = PTR_ERR(fo));
nr = i;
break;
}
ofd_write_lock(env, fo);
batch[i] = fo;
}
info->fti_buf.lb_buf = &tmp;
info->fti_buf.lb_len = sizeof(tmp);
info->fti_off = 0;
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
th->th_sync |= sync;
rc = dt_declare_record_write(env, oseq->os_lastid_obj, &info->fti_buf,
info->fti_off, th);
if (rc)
GOTO(trans_stop, rc);
for (i = 0; i < nr; i++) {
fo = batch[i];
LASSERT(fo);
if (unlikely(ofd_object_exists(fo))) {
/* object may exist being re-created by write replay */
CDEBUG(D_INODE, "object "LPX64"/"LPX64" exists: "
DFID"\n", ostid_seq(&oseq->os_oi), id,
PFID(lu_object_fid(&fo->ofo_obj.do_lu)));
continue;
}
next = ofd_object_child(fo);
LASSERT(next != NULL);
rc = dt_declare_create(env, next, &info->fti_attr, NULL,
&info->fti_dof, th);
if (rc) {
nr = i;
break;
}
}
rc = dt_trans_start_local(env, ofd->ofd_osd, th);
if (rc)
GOTO(trans_stop, rc);
CDEBUG(D_OTHER, "%s: create new object "DFID" nr %d\n",
ofd_name(ofd), PFID(fid), nr);
LASSERT(nr > 0);
/* When the LFSCK scanning the whole device to verify the LAST_ID file
* consistency, it will load the last_id into RAM firstly, and compare
* the last_id with each OST-object's ID. If the later one is larger,
* then it will regard the LAST_ID file crashed. But during the LFSCK
* scanning, the OFD may continue to create new OST-objects. Those new
* created OST-objects will have larger IDs than the LFSCK known ones.
* So from the LFSCK view, it needs to re-load the last_id from disk
* file, and if the latest last_id is still smaller than the object's
* ID, then the LAST_ID file is real crashed.
*
* To make above mechanism to work, before OFD pre-create OST-objects,
* it needs to update the LAST_ID file firstly, otherwise, the LFSCK
* may cannot get latest last_id although new OST-object created. */
if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_SKIP_LASTID)) {
tmp = cpu_to_le64(id + nr - 1);
dt_write_lock(env, oseq->os_lastid_obj, 0);
rc = dt_record_write(env, oseq->os_lastid_obj,
&info->fti_buf, &info->fti_off, th);
dt_write_unlock(env, oseq->os_lastid_obj);
if (rc != 0)
GOTO(trans_stop, rc);
}
for (i = 0; i < nr; i++) {
fo = batch[i];
LASSERT(fo);
/* Only the new created objects need to be recorded. */
if (ofd->ofd_osd->dd_record_fid_accessed) {
lfsck_pack_rfa(&ofd_info(env)->fti_lr,
lu_object_fid(&fo->ofo_obj.do_lu));
lfsck_in_notify(env, ofd->ofd_osd,
&ofd_info(env)->fti_lr);
}
if (likely(!ofd_object_exists(fo) &&
!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING))) {
next = ofd_object_child(fo);
LASSERT(next != NULL);
rc = dt_create(env, next, &info->fti_attr, NULL,
&info->fti_dof, th);
if (rc)
break;
LASSERT(ofd_object_exists(fo));
}
ofd_seq_last_oid_set(oseq, id + i);
}
objects = i;
/* NOT all the wanted objects have been created,
* set the LAST_ID as the real created. */
if (unlikely(objects < nr)) {
int rc1;
info->fti_off = 0;
tmp = cpu_to_le64(ofd_seq_last_oid(oseq));
dt_write_lock(env, oseq->os_lastid_obj, 0);
rc1 = dt_record_write(env, oseq->os_lastid_obj,
&info->fti_buf, &info->fti_off, th);
dt_write_unlock(env, oseq->os_lastid_obj);
if (rc1 != 0)
CERROR("%s: fail to reset the LAST_ID for seq ("LPX64
") from "LPU64" to "LPU64"\n", ofd_name(ofd),
ostid_seq(&oseq->os_oi), id + nr - 1,
ofd_seq_last_oid(oseq));
}
trans_stop:
ofd_trans_stop(env, ofd, th, rc);
out:
for (i = 0; i < nr_saved; i++) {
fo = batch[i];
if (fo) {
ofd_write_unlock(env, fo);
ofd_object_put(env, fo);
}
}
OBD_FREE(batch, nr_saved * sizeof(struct ofd_object *));
CDEBUG((objects == 0 && rc == 0) ? D_ERROR : D_OTHER,
"created %d/%d objects: %d\n", objects, nr_saved, rc);
LASSERT(ergo(objects == 0, rc < 0));
RETURN(objects > 0 ? objects : rc);
}
/**
* Prepare buffers for read request processing.
*
* This function converts remote buffers from client to local buffers
* and prepares the latter.
*
* \param[in] env execution environment
* \param[in] exp OBD export of client
* \param[in] ofd OFD device
* \param[in] fid FID of object
* \param[in] la object attributes
* \param[in] oa OBDO structure from client
* \param[in] niocount number of remote buffers
* \param[in] rnb remote buffers
* \param[in] nr_local number of local buffers
* \param[in] lnb local buffers
* \param[in] jobid job ID name
*
* \retval 0 on successful prepare
* \retval negative value on error
*/
static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
struct ofd_device *ofd, const struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa, int niocount,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb, char *jobid)
{
struct ofd_object *fo;
int i, j, rc, tot_bytes = 0;
enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
ENTRY;
LASSERT(env != NULL);
fo = ofd_object_find(env, ofd, fid);
if (IS_ERR(fo))
RETURN(PTR_ERR(fo));
LASSERT(fo != NULL);
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
rc = ofd_verify_ff(env, fo, oa);
if (rc != 0)
GOTO(unlock, rc);
}
if (ptlrpc_connection_is_local(exp->exp_connection))
dbt |= DT_BUFS_TYPE_LOCAL;
for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
lnb + j, dbt);
if (unlikely(rc < 0))
GOTO(buf_put, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
j += rc;
*nr_local += rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
rc = dt_attr_get(env, ofd_object_child(fo), la);
if (unlikely(rc))
GOTO(buf_put, rc);
rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
if (unlikely(rc))
GOTO(buf_put, rc);
ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid, tot_bytes);
RETURN(0);
buf_put:
dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
unlock:
ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
return rc;
}
int ofd_object_punch(const struct lu_env *env, struct ofd_object *fo,
__u64 start, __u64 end, struct lu_attr *la,
struct filter_fid *ff)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_obj2dev(fo);
struct ofd_mod_data *fmd;
struct dt_object *dob = ofd_object_child(fo);
struct thandle *th;
int ff_needed = 0;
int rc;
ENTRY;
/* we support truncate, not punch yet */
LASSERT(end == OBD_OBJECT_EOF);
fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
fmd->fmd_mactime_xid = info->fti_xid;
ofd_fmd_put(info->fti_exp, fmd);
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
/* VBR: version recovery check */
rc = ofd_version_get_check(info, fo);
if (rc)
GOTO(unlock, rc);
rc = ofd_attr_handle_ugid(env, fo, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(unlock, rc);
if (ff != NULL) {
rc = ofd_object_ff_check(env, fo);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(unlock, rc);
}
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
rc = dt_declare_attr_set(env, dob, la, th);
if (rc)
GOTO(stop, rc);
rc = dt_declare_punch(env, dob, start, OBD_OBJECT_EOF, th);
if (rc)
GOTO(stop, rc);
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, ofd_object_child(fo),
&info->fti_buf, XATTR_NAME_FID, 0,
th);
if (rc)
GOTO(stop, rc);
}
rc = ofd_trans_start(env, ofd, fo, th);
if (rc)
GOTO(stop, rc);
rc = dt_punch(env, dob, start, OBD_OBJECT_EOF, th,
ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, dob, la, th, ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
if (ff_needed)
rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
XATTR_NAME_FID, 0, th, BYPASS_CAPA);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
RETURN(rc);
}
int ofd_attr_set(const struct lu_env *env, struct ofd_object *fo,
struct lu_attr *la, struct filter_fid *ff)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_device *ofd = ofd_obj2dev(fo);
struct thandle *th;
struct ofd_mod_data *fmd;
int ff_needed = 0;
int rc;
ENTRY;
ofd_write_lock(env, fo);
if (!ofd_object_exists(fo))
GOTO(unlock, rc = -ENOENT);
if (la->la_valid & (LA_ATIME | LA_MTIME | LA_CTIME)) {
fmd = ofd_fmd_get(info->fti_exp, &fo->ofo_header.loh_fid);
if (fmd && fmd->fmd_mactime_xid < info->fti_xid)
fmd->fmd_mactime_xid = info->fti_xid;
ofd_fmd_put(info->fti_exp, fmd);
}
/* VBR: version recovery check */
rc = ofd_version_get_check(info, fo);
if (rc)
GOTO(unlock, rc);
rc = ofd_attr_handle_ugid(env, fo, la, 1 /* is_setattr */);
if (rc != 0)
GOTO(unlock, rc);
if (ff != NULL) {
rc = ofd_object_ff_check(env, fo);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(unlock, rc);
}
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(unlock, rc = PTR_ERR(th));
rc = dt_declare_attr_set(env, ofd_object_child(fo), la, th);
if (rc)
GOTO(stop, rc);
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, ofd_object_child(fo),
&info->fti_buf, XATTR_NAME_FID, 0,
th);
if (rc)
GOTO(stop, rc);
}
rc = ofd_trans_start(env, ofd, la->la_valid & LA_SIZE ? fo : NULL, th);
if (rc)
GOTO(stop, rc);
rc = dt_attr_set(env, ofd_object_child(fo), la, th,
ofd_object_capa(env, fo));
if (rc)
GOTO(stop, rc);
if (ff_needed)
rc = dt_xattr_set(env, ofd_object_child(fo), &info->fti_buf,
XATTR_NAME_FID, 0, th, BYPASS_CAPA);
stop:
ofd_trans_stop(env, ofd, th, rc);
unlock:
ofd_write_unlock(env, fo);
RETURN(rc);
}
int ofd_precreate_objects(const struct lu_env *env, struct ofd_device *ofd,
obd_id id, struct ofd_seq *oseq, int nr, int sync)
{
struct ofd_thread_info *info = ofd_info(env);
struct ofd_object *fo = NULL;
struct dt_object *next;
struct thandle *th;
struct ofd_object **batch;
obd_id tmp;
int rc;
int i;
int objects = 0;
int nr_saved = nr;
ENTRY;
/* Don't create objects beyond the valid range for this SEQ */
if (unlikely(fid_seq_is_mdt0(ostid_seq(&oseq->os_oi)) &&
(id + nr) >= IDIF_MAX_OID)) {
CERROR("%s:"DOSTID" hit the IDIF_MAX_OID (1<<48)!\n",
ofd_name(ofd), id, ostid_seq(&oseq->os_oi));
RETURN(rc = -ENOSPC);
} else if (unlikely(!fid_seq_is_mdt0(ostid_seq(&oseq->os_oi)) &&
(id + nr) >= OBIF_MAX_OID)) {
CERROR("%s:"DOSTID" hit the OBIF_MAX_OID (1<<32)!\n",
ofd_name(ofd), id, ostid_seq(&oseq->os_oi));
RETURN(rc = -ENOSPC);
}
OBD_ALLOC(batch, nr_saved * sizeof(struct ofd_object *));
if (batch == NULL)
RETURN(-ENOMEM);
info->fti_attr.la_valid = LA_TYPE | LA_MODE;
/*
* We mark object SUID+SGID to flag it for accepting UID+GID from
* client on first write. Currently the permission bits on the OST are
* never used, so this is OK.
*/
info->fti_attr.la_mode = S_IFREG | S_ISUID | S_ISGID | 0666;
info->fti_dof.dof_type = dt_mode_to_dft(S_IFREG);
/* Initialize a/c/m time so any client timestamp will always
* be newer and update the inode. ctime = 0 is also handled
* specially in osd_inode_setattr(). See LU-221, LU-1042 */
info->fti_attr.la_valid |= LA_ATIME | LA_MTIME | LA_CTIME;
info->fti_attr.la_atime = 0;
info->fti_attr.la_mtime = 0;
info->fti_attr.la_ctime = 0;
/* prepare objects */
ostid_set_seq(&info->fti_ostid, ostid_seq(&oseq->os_oi));
for (i = 0; i < nr; i++) {
ostid_set_id(&info->fti_ostid, id + i);
rc = ostid_to_fid(&info->fti_fid, &info->fti_ostid, 0);
if (rc) {
if (i == 0)
GOTO(out, rc);
nr = i;
break;
}
fo = ofd_object_find(env, ofd, &info->fti_fid);
if (IS_ERR(fo)) {
if (i == 0)
GOTO(out, rc = PTR_ERR(fo));
nr = i;
break;
}
ofd_write_lock(env, fo);
batch[i] = fo;
}
info->fti_buf.lb_buf = &tmp;
info->fti_buf.lb_len = sizeof(tmp);
info->fti_off = 0;
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
th->th_sync |= sync;
rc = dt_declare_record_write(env, oseq->os_lastid_obj, sizeof(tmp),
info->fti_off, th);
if (rc)
GOTO(trans_stop, rc);
for (i = 0; i < nr; i++) {
fo = batch[i];
LASSERT(fo);
if (unlikely(ofd_object_exists(fo))) {
/* object may exist being re-created by write replay */
CDEBUG(D_INODE, "object "LPX64"/"LPX64" exists: "
DFID"\n", ostid_seq(&oseq->os_oi), id,
PFID(&info->fti_fid));
continue;
}
next = ofd_object_child(fo);
LASSERT(next != NULL);
rc = dt_declare_create(env, next, &info->fti_attr, NULL,
&info->fti_dof, th);
if (rc) {
nr = i;
break;
}
}
rc = dt_trans_start_local(env, ofd->ofd_osd, th);
if (rc)
GOTO(trans_stop, rc);
CDEBUG(D_OTHER, "%s: create new object "DFID" nr %d\n",
ofd_name(ofd), PFID(&info->fti_fid), nr);
for (i = 0; i < nr; i++) {
fo = batch[i];
LASSERT(fo);
if (likely(!ofd_object_exists(fo))) {
next = ofd_object_child(fo);
LASSERT(next != NULL);
rc = dt_create(env, next, &info->fti_attr, NULL,
&info->fti_dof, th);
if (rc)
break;
LASSERT(ofd_object_exists(fo));
}
ofd_seq_last_oid_set(oseq, id + i);
}
objects = i;
if (objects > 0) {
tmp = cpu_to_le64(ofd_seq_last_oid(oseq));
rc = dt_record_write(env, oseq->os_lastid_obj,
&info->fti_buf, &info->fti_off, th);
}
trans_stop:
ofd_trans_stop(env, ofd, th, rc);
out:
for (i = 0; i < nr_saved; i++) {
fo = batch[i];
if (fo) {
ofd_write_unlock(env, fo);
ofd_object_put(env, fo);
}
}
OBD_FREE(batch, nr_saved * sizeof(struct ofd_object *));
CDEBUG((objects == 0 && rc == 0) ? D_ERROR : D_OTHER,
"created %d/%d objects: %d\n", objects, nr_saved, rc);
LASSERT(ergo(objects == 0, rc < 0));
RETURN(objects > 0 ? objects : rc);
}
static int
ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *ofd_obj, struct lu_attr *la,
struct filter_fid *ff)
{
struct ofd_thread_info *info = ofd_info(env);
__u64 valid = la->la_valid;
int rc;
struct thandle *th;
struct dt_object *dt_obj;
int ff_needed = 0;
ENTRY;
LASSERT(la);
dt_obj = ofd_object_child(ofd_obj);
LASSERT(dt_obj != NULL);
la->la_valid &= LA_UID | LA_GID;
rc = ofd_attr_handle_ugid(env, ofd_obj, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(out, rc);
if (ff != NULL) {
rc = ofd_object_ff_check(env, ofd_obj);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(out, rc);
}
if (!la->la_valid && !ff_needed)
/* no attributes to set */
GOTO(out, rc = 0);
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
if (la->la_valid) {
rc = dt_declare_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_tx, rc);
}
if (ff_needed) {
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
XATTR_NAME_FID, 0, th);
if (rc)
GOTO(out_tx, rc);
}
/* We don't need a transno for this operation which will be re-executed
* anyway when the OST_WRITE (with a transno assigned) is replayed */
rc = dt_trans_start_local(env, ofd->ofd_osd , th);
if (rc)
GOTO(out_tx, rc);
/* set uid/gid */
if (la->la_valid) {
rc = dt_attr_set(env, dt_obj, la, th,
ofd_object_capa(env, ofd_obj));
if (rc)
GOTO(out_tx, rc);
}
/* set filter fid EA */
if (ff_needed) {
rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID,
0, th, BYPASS_CAPA);
if (rc)
GOTO(out_tx, rc);
}
EXIT;
out_tx:
dt_trans_stop(env, ofd->ofd_osd, th);
out:
la->la_valid = valid;
return rc;
}
/**
* Set attributes of object during write bulk IO processing.
*
* Change object attributes and write parent FID into extended
* attributes when needed.
*
* \param[in] env execution environment
* \param[in] ofd OFD device
* \param[in] ofd_obj OFD object
* \param[in] la object attributes
* \param[in] ff parent FID
*
* \retval 0 on successful attributes update
* \retval negative value on error
*/
static int
ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *ofd_obj, struct lu_attr *la,
struct filter_fid *ff)
{
struct ofd_thread_info *info = ofd_info(env);
__u64 valid = la->la_valid;
int rc;
struct thandle *th;
struct dt_object *dt_obj;
int ff_needed = 0;
ENTRY;
LASSERT(la);
dt_obj = ofd_object_child(ofd_obj);
LASSERT(dt_obj != NULL);
la->la_valid &= LA_UID | LA_GID;
rc = ofd_attr_handle_ugid(env, ofd_obj, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(out, rc);
if (ff != NULL) {
rc = ofd_object_ff_load(env, ofd_obj);
if (rc == -ENODATA)
ff_needed = 1;
else if (rc < 0)
GOTO(out, rc);
}
if (!la->la_valid && !ff_needed)
/* no attributes to set */
GOTO(out, rc = 0);
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
if (la->la_valid) {
rc = dt_declare_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_tx, rc);
}
if (ff_needed) {
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
ff->ff_parent.f_oid =
cpu_to_le32(le32_to_cpu(ff->ff_parent.f_oid) - 1);
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
XATTR_NAME_FID, 0, th);
if (rc)
GOTO(out_tx, rc);
}
/* We don't need a transno for this operation which will be re-executed
* anyway when the OST_WRITE (with a transno assigned) is replayed */
rc = dt_trans_start_local(env, ofd->ofd_osd , th);
if (rc)
GOTO(out_tx, rc);
/* set uid/gid */
if (la->la_valid) {
rc = dt_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_tx, rc);
}
/* set filter fid EA */
if (ff_needed) {
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
GOTO(out_tx, rc);
rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID,
0, th);
if (rc == 0) {
ofd_obj->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
ofd_obj->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
/* Currently, the filter_fid::ff_parent::f_ver is not
* the real parent MDT-object's FID::f_ver, instead it
* is the OST-object index in its parent MDT-object's
* layout EA. */
ofd_obj->ofo_pfid.f_stripe_idx =
le32_to_cpu(ff->ff_parent.f_stripe_idx);
}
}
GOTO(out_tx, rc);
out_tx:
dt_trans_stop(env, ofd->ofd_osd, th);
out:
la->la_valid = valid;
return rc;
}
/**
* Set attributes of object during write bulk IO processing.
*
* Change object attributes and write parent FID into extended
* attributes when needed.
*
* \param[in] env execution environment
* \param[in] ofd OFD device
* \param[in] ofd_obj OFD object
* \param[in] la object attributes
* \param[in] oa obdo
*
* \retval 0 on successful attributes update
* \retval negative value on error
*/
static int
ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
struct ofd_object *ofd_obj, struct lu_attr *la,
struct obdo *oa)
{
struct ofd_thread_info *info = ofd_info(env);
struct filter_fid *ff = &info->fti_mds_fid;
__u64 valid = la->la_valid;
struct thandle *th;
struct dt_object *dt_obj;
int fl = 0;
int rc;
ENTRY;
LASSERT(la);
dt_obj = ofd_object_child(ofd_obj);
LASSERT(dt_obj != NULL);
la->la_valid &= LA_UID | LA_GID | LA_PROJID;
rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
if (rc != 0)
GOTO(out, rc);
fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
if (fl < 0)
GOTO(out, rc = fl);
if (!la->la_valid && !fl)
/* no attributes to set */
GOTO(out, rc = 0);
th = ofd_trans_create(env, ofd);
if (IS_ERR(th))
GOTO(out, rc = PTR_ERR(th));
if (la->la_valid) {
rc = dt_declare_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_tx, rc);
}
if (fl) {
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
else if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
le32_add_cpu(&ff->ff_parent.f_oid, -1);
rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
XATTR_NAME_FID, 0, th);
if (rc)
GOTO(out_tx, rc);
}
/* We don't need a transno for this operation which will be re-executed
* anyway when the OST_WRITE (with a transno assigned) is replayed */
rc = dt_trans_start_local(env, ofd->ofd_osd , th);
if (rc)
GOTO(out_tx, rc);
/* set uid/gid/projid */
if (la->la_valid) {
rc = dt_attr_set(env, dt_obj, la, th);
if (rc)
GOTO(out_tx, rc);
}
/* set filter fid EA.
* FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
* while the write lock should be held. However, it should work because
* write RPCs only modify ff_{parent,layout} and those information will
* be the same from all the write RPCs. The reason that fl is not used
* in dt_xattr_set() is to allow this race. */
if (fl) {
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
GOTO(out_tx, rc);
info->fti_buf.lb_buf = ff;
info->fti_buf.lb_len = sizeof(*ff);
rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID,
0, th);
if (rc == 0)
filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
}
GOTO(out_tx, rc);
out_tx:
dt_trans_stop(env, ofd->ofd_osd, th);
out:
la->la_valid = valid;
return rc;
}
static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
struct ofd_device *ofd, struct lu_fid *fid,
struct lu_attr *la, struct obdo *oa,
int objcount, struct obd_ioobj *obj,
struct niobuf_remote *rnb, int *nr_local,
struct niobuf_local *lnb, char *jobid)
{
struct ofd_object *fo;
int i, j, k, rc = 0, tot_bytes = 0;
ENTRY;
LASSERT(env != NULL);
LASSERT(objcount == 1);
if (unlikely(exp->exp_obd->obd_recovering)) {
struct ofd_thread_info *info = ofd_info(env);
/* copied from ofd_precreate_object */
/* XXX this should be consolidated to use the same code
* instead of a copy, due to the ongoing risk of bugs. */
memset(&info->fti_attr, 0, sizeof(info->fti_attr));
info->fti_attr.la_valid = LA_TYPE | LA_MODE;
info->fti_attr.la_mode = S_IFREG | S_ISUID | S_ISGID | 0666;
info->fti_attr.la_valid |= LA_ATIME | LA_MTIME | LA_CTIME;
/* Initialize a/c/m time so any client timestamp will always
* be newer and update the inode. ctime = 0 is also handled
* specially in osd_inode_setattr(). See LU-221, LU-1042 */
info->fti_attr.la_atime = 0;
info->fti_attr.la_mtime = 0;
info->fti_attr.la_ctime = 0;
fo = ofd_object_find_or_create(env, ofd, fid, &info->fti_attr);
} else {
fo = ofd_object_find(env, ofd, fid);
}
if (IS_ERR(fo))
GOTO(out, rc = PTR_ERR(fo));
LASSERT(fo != NULL);
ofd_read_lock(env, fo);
if (!ofd_object_exists(fo)) {
CERROR("%s: BRW to missing obj "DOSTID"\n",
exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
ofd_read_unlock(env, fo);
ofd_object_put(env, fo);
GOTO(out, rc = -ENOENT);
}
/* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
* space back if possible */
ofd_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
/* parse remote buffers to local buffers and prepare the latter */
*nr_local = 0;
for (i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
rc = dt_bufs_get(env, ofd_object_child(fo),
rnb + i, lnb + j, 1,
ofd_object_capa(env, fo));
if (unlikely(rc < 0))
GOTO(err, rc);
LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
/* correct index for local buffers to continue with */
for (k = 0; k < rc; k++) {
lnb[j+k].lnb_flags = rnb[i].rnb_flags;
if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
lnb[j+k].lnb_rc = -ENOSPC;
/* remote client can't break through quota */
if (exp_connect_rmtclient(exp))
lnb[j+k].lnb_flags &= ~OBD_BRW_NOQUOTA;
}
j += rc;
*nr_local += rc;
LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
tot_bytes += rnb[i].rnb_len;
}
LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
if (unlikely(rc != 0))
GOTO(err, rc);
ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid, tot_bytes);
RETURN(0);
err:
dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
ofd_read_unlock(env, fo);
/* ofd_grant_prepare_write() was called, so we must commit */
ofd_grant_commit(env, exp, rc);
out:
/* let's still process incoming grant information packed in the oa,
* but without enforcing grant since we won't proceed with the write.
* Just like a read request actually. */
ofd_grant_prepare_read(env, exp, oa);
return rc;
}