--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#define DEBUG_SUBSYSTEM S_LOV
+
+#include "../../include/linux/libcfs/libcfs.h"
+
+#include "../include/obd_class.h"
+#include "../include/lustre/lustre_idl.h"
+#include "lov_internal.h"
+
+static void lov_init_set(struct lov_request_set *set)
+{
+ set->set_count = 0;
+ atomic_set(&set->set_completes, 0);
+ atomic_set(&set->set_success, 0);
+ atomic_set(&set->set_finish_checked, 0);
+ set->set_cookies = NULL;
+ INIT_LIST_HEAD(&set->set_list);
+ atomic_set(&set->set_refcount, 1);
+ init_waitqueue_head(&set->set_waitq);
+ spin_lock_init(&set->set_lock);
+}
+
+void lov_finish_set(struct lov_request_set *set)
+{
+ struct list_head *pos, *n;
+
+ LASSERT(set);
+ list_for_each_safe(pos, n, &set->set_list) {
+ struct lov_request *req = list_entry(pos,
+ struct lov_request,
+ rq_link);
+ list_del_init(&req->rq_link);
+
+ if (req->rq_oi.oi_oa)
+ OBDO_FREE(req->rq_oi.oi_oa);
+ if (req->rq_oi.oi_md)
+ OBD_FREE_LARGE(req->rq_oi.oi_md, req->rq_buflen);
+ if (req->rq_oi.oi_osfs)
+ OBD_FREE(req->rq_oi.oi_osfs,
+ sizeof(*req->rq_oi.oi_osfs));
+ OBD_FREE(req, sizeof(*req));
+ }
+
+ if (set->set_pga) {
+ int len = set->set_oabufs * sizeof(*set->set_pga);
+ OBD_FREE_LARGE(set->set_pga, len);
+ }
+ if (set->set_lockh)
+ lov_llh_put(set->set_lockh);
+
+ OBD_FREE(set, sizeof(*set));
+}
+
+int lov_set_finished(struct lov_request_set *set, int idempotent)
+{
+ int completes = atomic_read(&set->set_completes);
+
+ CDEBUG(D_INFO, "check set %d/%d\n", completes, set->set_count);
+
+ if (completes == set->set_count) {
+ if (idempotent)
+ return 1;
+ if (atomic_inc_return(&set->set_finish_checked) == 1)
+ return 1;
+ }
+ return 0;
+}
+
+void lov_update_set(struct lov_request_set *set,
+ struct lov_request *req, int rc)
+{
+ req->rq_complete = 1;
+ req->rq_rc = rc;
+
+ atomic_inc(&set->set_completes);
+ if (rc == 0)
+ atomic_inc(&set->set_success);
+
+ wake_up(&set->set_waitq);
+}
+
+int lov_update_common_set(struct lov_request_set *set,
+ struct lov_request *req, int rc)
+{
+ struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
+
+ lov_update_set(set, req, rc);
+
+ /* grace error on inactive ost */
+ if (rc && !(lov->lov_tgts[req->rq_idx] &&
+ lov->lov_tgts[req->rq_idx]->ltd_active))
+ rc = 0;
+
+ /* FIXME in raid1 regime, should return 0 */
+ return rc;
+}
+
+void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
+{
+ list_add_tail(&req->rq_link, &set->set_list);
+ set->set_count++;
+ req->rq_rqset = set;
+}
+
+static int lov_check_set(struct lov_obd *lov, int idx)
+{
+ int rc;
+ struct lov_tgt_desc *tgt;
+
+ mutex_lock(&lov->lov_lock);
+ tgt = lov->lov_tgts[idx];
+ rc = !tgt || tgt->ltd_active ||
+ (tgt->ltd_exp &&
+ class_exp2cliimp(tgt->ltd_exp)->imp_connect_tried);
+ mutex_unlock(&lov->lov_lock);
+
+ return rc;
+}
+
+/* Check if the OSC connection exists and is active.
+ * If the OSC has not yet had a chance to connect to the OST the first time,
+ * wait once for it to connect instead of returning an error.
+ */
+int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx)
+{
+ wait_queue_head_t waitq;
+ struct l_wait_info lwi;
+ struct lov_tgt_desc *tgt;
+ int rc = 0;
+
+ mutex_lock(&lov->lov_lock);
+
+ tgt = lov->lov_tgts[ost_idx];
+
+ if (unlikely(tgt == NULL)) {
+ rc = 0;
+ goto out;
+ }
+
+ if (likely(tgt->ltd_active)) {
+ rc = 1;
+ goto out;
+ }
+
+ if (tgt->ltd_exp && class_exp2cliimp(tgt->ltd_exp)->imp_connect_tried) {
+ rc = 0;
+ goto out;
+ }
+
+ mutex_unlock(&lov->lov_lock);
+
+ init_waitqueue_head(&waitq);
+ lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(obd_timeout),
+ cfs_time_seconds(1), NULL, NULL);
+
+ rc = l_wait_event(waitq, lov_check_set(lov, ost_idx), &lwi);
+ if (tgt != NULL && tgt->ltd_active)
+ return 1;
+
+ return 0;
+
+out:
+ mutex_unlock(&lov->lov_lock);
+ return rc;
+}
+
+static int common_attr_done(struct lov_request_set *set)
+{
+ struct list_head *pos;
+ struct lov_request *req;
+ struct obdo *tmp_oa;
+ int rc = 0, attrset = 0;
+
+ LASSERT(set->set_oi != NULL);
+
+ if (set->set_oi->oi_oa == NULL)
+ return 0;
+
+ if (!atomic_read(&set->set_success))
+ return -EIO;
+
+ OBDO_ALLOC(tmp_oa);
+ if (tmp_oa == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ list_for_each(pos, &set->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ if (!req->rq_complete || req->rq_rc)
+ continue;
+ if (req->rq_oi.oi_oa->o_valid == 0) /* inactive stripe */
+ continue;
+ lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
+ req->rq_oi.oi_oa->o_valid,
+ set->set_oi->oi_md, req->rq_stripe, &attrset);
+ }
+ if (!attrset) {
+ CERROR("No stripes had valid attrs\n");
+ rc = -EIO;
+ }
+ if ((set->set_oi->oi_oa->o_valid & OBD_MD_FLEPOCH) &&
+ (set->set_oi->oi_md->lsm_stripe_count != attrset)) {
+ /* When we take attributes of some epoch, we require all the
+ * ost to be active. */
+ CERROR("Not all the stripes had valid attrs\n");
+ rc = -EIO;
+ goto out;
+ }
+
+ tmp_oa->o_oi = set->set_oi->oi_oa->o_oi;
+ memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
+out:
+ if (tmp_oa)
+ OBDO_FREE(tmp_oa);
+ return rc;
+
+}
+
+int lov_fini_getattr_set(struct lov_request_set *set)
+{
+ int rc = 0;
+
+ if (set == NULL)
+ return 0;
+ LASSERT(set->set_exp);
+ if (atomic_read(&set->set_completes))
+ rc = common_attr_done(set);
+
+ lov_put_reqset(set);
+
+ return rc;
+}
+
+/* The callback for osc_getattr_async that finalizes a request info when a
+ * response is received. */
+static int cb_getattr_update(void *cookie, int rc)
+{
+ struct obd_info *oinfo = cookie;
+ struct lov_request *lovreq;
+
+ lovreq = container_of(oinfo, struct lov_request, rq_oi);
+ return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
+}
+
+int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
+ struct lov_request_set **reqset)
+{
+ struct lov_request_set *set;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ int rc = 0, i;
+
+ OBD_ALLOC(set, sizeof(*set));
+ if (set == NULL)
+ return -ENOMEM;
+ lov_init_set(set);
+
+ set->set_exp = exp;
+ set->set_oi = oinfo;
+
+ for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
+ struct lov_oinfo *loi;
+ struct lov_request *req;
+
+ loi = oinfo->oi_md->lsm_oinfo[i];
+ if (lov_oinfo_is_dummy(loi))
+ continue;
+
+ if (!lov_check_and_wait_active(lov, loi->loi_ost_idx)) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
+ if (oinfo->oi_oa->o_valid & OBD_MD_FLEPOCH) {
+ /* SOM requires all the OSTs to be active. */
+ rc = -EIO;
+ goto out_set;
+ }
+ continue;
+ }
+
+ OBD_ALLOC(req, sizeof(*req));
+ if (req == NULL) {
+ rc = -ENOMEM;
+ goto out_set;
+ }
+
+ req->rq_stripe = i;
+ req->rq_idx = loi->loi_ost_idx;
+
+ OBDO_ALLOC(req->rq_oi.oi_oa);
+ if (req->rq_oi.oi_oa == NULL) {
+ OBD_FREE(req, sizeof(*req));
+ rc = -ENOMEM;
+ goto out_set;
+ }
+ memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
+ sizeof(*req->rq_oi.oi_oa));
+ req->rq_oi.oi_oa->o_oi = loi->loi_oi;
+ req->rq_oi.oi_cb_up = cb_getattr_update;
+ req->rq_oi.oi_capa = oinfo->oi_capa;
+
+ lov_set_add_req(req, set);
+ }
+ if (!set->set_count) {
+ rc = -EIO;
+ goto out_set;
+ }
+ *reqset = set;
+ return rc;
+out_set:
+ lov_fini_getattr_set(set);
+ return rc;
+}
+
+int lov_fini_destroy_set(struct lov_request_set *set)
+{
+ if (set == NULL)
+ return 0;
+ LASSERT(set->set_exp);
+ if (atomic_read(&set->set_completes)) {
+ /* FIXME update qos data here */
+ }
+
+ lov_put_reqset(set);
+
+ return 0;
+}
+
+int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
+ struct obdo *src_oa, struct lov_stripe_md *lsm,
+ struct obd_trans_info *oti,
+ struct lov_request_set **reqset)
+{
+ struct lov_request_set *set;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ int rc = 0, i;
+
+ OBD_ALLOC(set, sizeof(*set));
+ if (set == NULL)
+ return -ENOMEM;
+ lov_init_set(set);
+
+ set->set_exp = exp;
+ set->set_oi = oinfo;
+ set->set_oi->oi_md = lsm;
+ set->set_oi->oi_oa = src_oa;
+ set->set_oti = oti;
+ if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
+ set->set_cookies = oti->oti_logcookies;
+
+ for (i = 0; i < lsm->lsm_stripe_count; i++) {
+ struct lov_oinfo *loi;
+ struct lov_request *req;
+
+ loi = lsm->lsm_oinfo[i];
+ if (lov_oinfo_is_dummy(loi))
+ continue;
+
+ if (!lov_check_and_wait_active(lov, loi->loi_ost_idx)) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
+ continue;
+ }
+
+ OBD_ALLOC(req, sizeof(*req));
+ if (req == NULL) {
+ rc = -ENOMEM;
+ goto out_set;
+ }
+
+ req->rq_stripe = i;
+ req->rq_idx = loi->loi_ost_idx;
+
+ OBDO_ALLOC(req->rq_oi.oi_oa);
+ if (req->rq_oi.oi_oa == NULL) {
+ OBD_FREE(req, sizeof(*req));
+ rc = -ENOMEM;
+ goto out_set;
+ }
+ memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
+ req->rq_oi.oi_oa->o_oi = loi->loi_oi;
+ lov_set_add_req(req, set);
+ }
+ if (!set->set_count) {
+ rc = -EIO;
+ goto out_set;
+ }
+ *reqset = set;
+ return rc;
+out_set:
+ lov_fini_destroy_set(set);
+ return rc;
+}
+
+int lov_fini_setattr_set(struct lov_request_set *set)
+{
+ int rc = 0;
+
+ if (set == NULL)
+ return 0;
+ LASSERT(set->set_exp);
+ if (atomic_read(&set->set_completes)) {
+ rc = common_attr_done(set);
+ /* FIXME update qos data here */
+ }
+
+ lov_put_reqset(set);
+ return rc;
+}
+
+int lov_update_setattr_set(struct lov_request_set *set,
+ struct lov_request *req, int rc)
+{
+ struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
+ struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
+
+ lov_update_set(set, req, rc);
+
+ /* grace error on inactive ost */
+ if (rc && !(lov->lov_tgts[req->rq_idx] &&
+ lov->lov_tgts[req->rq_idx]->ltd_active))
+ rc = 0;
+
+ if (rc == 0) {
+ if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
+ lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
+ req->rq_oi.oi_oa->o_ctime;
+ if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
+ lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
+ req->rq_oi.oi_oa->o_mtime;
+ if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
+ lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
+ req->rq_oi.oi_oa->o_atime;
+ }
+
+ return rc;
+}
+
+/* The callback for osc_setattr_async that finalizes a request info when a
+ * response is received. */
+static int cb_setattr_update(void *cookie, int rc)
+{
+ struct obd_info *oinfo = cookie;
+ struct lov_request *lovreq;
+
+ lovreq = container_of(oinfo, struct lov_request, rq_oi);
+ return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
+}
+
+int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
+ struct obd_trans_info *oti,
+ struct lov_request_set **reqset)
+{
+ struct lov_request_set *set;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ int rc = 0, i;
+
+ OBD_ALLOC(set, sizeof(*set));
+ if (set == NULL)
+ return -ENOMEM;
+ lov_init_set(set);
+
+ set->set_exp = exp;
+ set->set_oti = oti;
+ set->set_oi = oinfo;
+ if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
+ set->set_cookies = oti->oti_logcookies;
+
+ for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
+ struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
+ struct lov_request *req;
+
+ if (lov_oinfo_is_dummy(loi))
+ continue;
+
+ if (!lov_check_and_wait_active(lov, loi->loi_ost_idx)) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
+ continue;
+ }
+
+ OBD_ALLOC(req, sizeof(*req));
+ if (req == NULL) {
+ rc = -ENOMEM;
+ goto out_set;
+ }
+ req->rq_stripe = i;
+ req->rq_idx = loi->loi_ost_idx;
+
+ OBDO_ALLOC(req->rq_oi.oi_oa);
+ if (req->rq_oi.oi_oa == NULL) {
+ OBD_FREE(req, sizeof(*req));
+ rc = -ENOMEM;
+ goto out_set;
+ }
+ memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
+ sizeof(*req->rq_oi.oi_oa));
+ req->rq_oi.oi_oa->o_oi = loi->loi_oi;
+ req->rq_oi.oi_oa->o_stripe_idx = i;
+ req->rq_oi.oi_cb_up = cb_setattr_update;
+ req->rq_oi.oi_capa = oinfo->oi_capa;
+
+ if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
+ int off = lov_stripe_offset(oinfo->oi_md,
+ oinfo->oi_oa->o_size, i,
+ &req->rq_oi.oi_oa->o_size);
+
+ if (off < 0 && req->rq_oi.oi_oa->o_size)
+ req->rq_oi.oi_oa->o_size--;
+
+ CDEBUG(D_INODE, "stripe %d has size %llu/%llu\n",
+ i, req->rq_oi.oi_oa->o_size,
+ oinfo->oi_oa->o_size);
+ }
+ lov_set_add_req(req, set);
+ }
+ if (!set->set_count) {
+ rc = -EIO;
+ goto out_set;
+ }
+ *reqset = set;
+ return rc;
+out_set:
+ lov_fini_setattr_set(set);
+ return rc;
+}
+
+#define LOV_U64_MAX ((__u64)~0ULL)
+#define LOV_SUM_MAX(tot, add) \
+ do { \
+ if ((tot) + (add) < (tot)) \
+ (tot) = LOV_U64_MAX; \
+ else \
+ (tot) += (add); \
+ } while (0)
+
+int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,
+ int success)
+{
+ if (success) {
+ __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov,
+ LOV_MAGIC, 0);
+ if (osfs->os_files != LOV_U64_MAX)
+ lov_do_div64(osfs->os_files, expected_stripes);
+ if (osfs->os_ffree != LOV_U64_MAX)
+ lov_do_div64(osfs->os_ffree, expected_stripes);
+
+ spin_lock(&obd->obd_osfs_lock);
+ memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
+ obd->obd_osfs_age = cfs_time_current_64();
+ spin_unlock(&obd->obd_osfs_lock);
+ return 0;
+ }
+
+ return -EIO;
+}
+
+int lov_fini_statfs_set(struct lov_request_set *set)
+{
+ int rc = 0;
+
+ if (set == NULL)
+ return 0;
+
+ if (atomic_read(&set->set_completes)) {
+ rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
+ atomic_read(&set->set_success));
+ }
+ lov_put_reqset(set);
+ return rc;
+}
+
+void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
+ int success)
+{
+ int shift = 0, quit = 0;
+ __u64 tmp;
+
+ if (success == 0) {
+ memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
+ } else {
+ if (osfs->os_bsize != lov_sfs->os_bsize) {
+ /* assume all block sizes are always powers of 2 */
+ /* get the bits difference */
+ tmp = osfs->os_bsize | lov_sfs->os_bsize;
+ for (shift = 0; shift <= 64; ++shift) {
+ if (tmp & 1) {
+ if (quit)
+ break;
+ else
+ quit = 1;
+ shift = 0;
+ }
+ tmp >>= 1;
+ }
+ }
+
+ if (osfs->os_bsize < lov_sfs->os_bsize) {
+ osfs->os_bsize = lov_sfs->os_bsize;
+
+ osfs->os_bfree >>= shift;
+ osfs->os_bavail >>= shift;
+ osfs->os_blocks >>= shift;
+ } else if (shift != 0) {
+ lov_sfs->os_bfree >>= shift;
+ lov_sfs->os_bavail >>= shift;
+ lov_sfs->os_blocks >>= shift;
+ }
+ osfs->os_bfree += lov_sfs->os_bfree;
+ osfs->os_bavail += lov_sfs->os_bavail;
+ osfs->os_blocks += lov_sfs->os_blocks;
+ /* XXX not sure about this one - depends on policy.
+ * - could be minimum if we always stripe on all OBDs
+ * (but that would be wrong for any other policy,
+ * if one of the OBDs has no more objects left)
+ * - could be sum if we stripe whole objects
+ * - could be average, just to give a nice number
+ *
+ * To give a "reasonable" (if not wholly accurate)
+ * number, we divide the total number of free objects
+ * by expected stripe count (watch out for overflow).
+ */
+ LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
+ LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
+ }
+}
+
+/* The callback for osc_statfs_async that finalizes a request info when a
+ * response is received. */
+static int cb_statfs_update(void *cookie, int rc)
+{
+ struct obd_info *oinfo = cookie;
+ struct lov_request *lovreq;
+ struct lov_request_set *set;
+ struct obd_statfs *osfs, *lov_sfs;
+ struct lov_obd *lov;
+ struct lov_tgt_desc *tgt;
+ struct obd_device *lovobd, *tgtobd;
+ int success;
+
+ lovreq = container_of(oinfo, struct lov_request, rq_oi);
+ set = lovreq->rq_rqset;
+ lovobd = set->set_obd;
+ lov = &lovobd->u.lov;
+ osfs = set->set_oi->oi_osfs;
+ lov_sfs = oinfo->oi_osfs;
+ success = atomic_read(&set->set_success);
+ /* XXX: the same is done in lov_update_common_set, however
+ lovset->set_exp is not initialized. */
+ lov_update_set(set, lovreq, rc);
+ if (rc)
+ goto out;
+
+ obd_getref(lovobd);
+ tgt = lov->lov_tgts[lovreq->rq_idx];
+ if (!tgt || !tgt->ltd_active)
+ goto out_update;
+
+ tgtobd = class_exp2obd(tgt->ltd_exp);
+ spin_lock(&tgtobd->obd_osfs_lock);
+ memcpy(&tgtobd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
+ if ((oinfo->oi_flags & OBD_STATFS_FROM_CACHE) == 0)
+ tgtobd->obd_osfs_age = cfs_time_current_64();
+ spin_unlock(&tgtobd->obd_osfs_lock);
+
+out_update:
+ lov_update_statfs(osfs, lov_sfs, success);
+ obd_putref(lovobd);
+
+out:
+ if (set->set_oi->oi_flags & OBD_STATFS_PTLRPCD &&
+ lov_set_finished(set, 0)) {
+ lov_statfs_interpret(NULL, set, set->set_count !=
+ atomic_read(&set->set_success));
+ }
+
+ return 0;
+}
+
+int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
+ struct lov_request_set **reqset)
+{
+ struct lov_request_set *set;
+ struct lov_obd *lov = &obd->u.lov;
+ int rc = 0, i;
+
+ OBD_ALLOC(set, sizeof(*set));
+ if (set == NULL)
+ return -ENOMEM;
+ lov_init_set(set);
+
+ set->set_obd = obd;
+ set->set_oi = oinfo;
+
+ /* We only get block data from the OBD */
+ for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+ struct lov_request *req;
+
+ if (lov->lov_tgts[i] == NULL ||
+ (!lov_check_and_wait_active(lov, i) &&
+ (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", i);
+ continue;
+ }
+
+ /* skip targets that have been explicitly disabled by the
+ * administrator */
+ if (!lov->lov_tgts[i]->ltd_exp) {
+ CDEBUG(D_HA, "lov idx %d administratively disabled\n", i);
+ continue;
+ }
+
+ OBD_ALLOC(req, sizeof(*req));
+ if (req == NULL) {
+ rc = -ENOMEM;
+ goto out_set;
+ }
+
+ OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
+ if (req->rq_oi.oi_osfs == NULL) {
+ OBD_FREE(req, sizeof(*req));
+ rc = -ENOMEM;
+ goto out_set;
+ }
+
+ req->rq_idx = i;
+ req->rq_oi.oi_cb_up = cb_statfs_update;
+ req->rq_oi.oi_flags = oinfo->oi_flags;
+
+ lov_set_add_req(req, set);
+ }
+ if (!set->set_count) {
+ rc = -EIO;
+ goto out_set;
+ }
+ *reqset = set;
+ return rc;
+out_set:
+ lov_fini_statfs_set(set);
+ return rc;
+}
Code Review / kvmfornfv.git / blobdiff