--- /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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/osp/osp_sync.c
+ *
+ * Lustre OST Proxy Device
+ *
+ * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
+ * Author: Mikhail Pershin <mike.pershin@intel.com>
+ */
+
+#ifndef EXPORT_SYMTAB
+# define EXPORT_SYMTAB
+#endif
+#define DEBUG_SUBSYSTEM S_MDS
+
+#include "osp_internal.h"
+
+/*
+ * there are two specific states to take care about:
+ *
+ * = import is disconnected =
+ *
+ * = import is inactive =
+ * in this case osp_declare_object_create() returns an error
+ *
+ */
+
+/*
+ * statfs
+ */
+static inline int osp_statfs_need_update(struct osp_device *d)
+{
+ return !cfs_time_before(cfs_time_current(),
+ d->opd_statfs_fresh_till);
+}
+
+static void osp_statfs_timer_cb(unsigned long _d)
+{
+ struct osp_device *d = (struct osp_device *) _d;
+
+ LASSERT(d);
+ cfs_waitq_signal(&d->opd_pre_waitq);
+}
+
+static int osp_statfs_interpret(const struct lu_env *env,
+ struct ptlrpc_request *req,
+ union ptlrpc_async_args *aa, int rc)
+{
+ struct obd_import *imp = req->rq_import;
+ struct obd_statfs *msfs;
+ struct osp_device *d;
+
+ ENTRY;
+
+ aa = ptlrpc_req_async_args(req);
+ d = aa->pointer_arg[0];
+ LASSERT(d);
+
+ if (rc != 0)
+ GOTO(out, rc);
+
+ msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
+ if (msfs == NULL)
+ GOTO(out, rc = -EPROTO);
+
+ d->opd_statfs = *msfs;
+
+ osp_pre_update_status(d, rc);
+
+ /* schedule next update */
+ d->opd_statfs_fresh_till = cfs_time_shift(d->opd_statfs_maxage);
+ cfs_timer_arm(&d->opd_statfs_timer, d->opd_statfs_fresh_till);
+ d->opd_statfs_update_in_progress = 0;
+
+ CDEBUG(D_CACHE, "updated statfs %p\n", d);
+
+ RETURN(0);
+out:
+ /* couldn't update statfs, try again as soon as possible */
+ cfs_waitq_signal(&d->opd_pre_waitq);
+ if (req->rq_import_generation == imp->imp_generation)
+ CERROR("%s: couldn't update statfs: rc = %d\n",
+ d->opd_obd->obd_name, rc);
+ RETURN(rc);
+}
+
+static int osp_statfs_update(struct osp_device *d)
+{
+ struct ptlrpc_request *req;
+ struct obd_import *imp;
+ union ptlrpc_async_args *aa;
+ int rc;
+
+ ENTRY;
+
+ CDEBUG(D_CACHE, "going to update statfs\n");
+
+ imp = d->opd_obd->u.cli.cl_import;
+ LASSERT(imp);
+
+ req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
+ if (rc) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+ ptlrpc_request_set_replen(req);
+ req->rq_request_portal = OST_CREATE_PORTAL;
+ ptlrpc_at_set_req_timeout(req);
+
+ req->rq_interpret_reply = (ptlrpc_interpterer_t)osp_statfs_interpret;
+ aa = ptlrpc_req_async_args(req);
+ aa->pointer_arg[0] = d;
+
+ ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
+
+ cfs_timer_disarm(&d->opd_statfs_timer);
+
+ /*
+ * no updates till reply
+ */
+ d->opd_statfs_fresh_till = cfs_time_shift(obd_timeout * 1000);
+ d->opd_statfs_update_in_progress = 1;
+
+ RETURN(0);
+}
+
+/*
+ * XXX: there might be a case where removed object(s) do not add free
+ * space (empty object). if the number of such deletions is high, then
+ * we can start to update statfs too often - a rpc storm
+ * TODO: some throttling is needed
+ */
+void osp_statfs_need_now(struct osp_device *d)
+{
+ if (!d->opd_statfs_update_in_progress) {
+ /*
+ * if current status is -ENOSPC (lack of free space on OST)
+ * then we should poll OST immediately once object destroy
+ * is replied
+ */
+ d->opd_statfs_fresh_till = cfs_time_shift(-1);
+ cfs_timer_disarm(&d->opd_statfs_timer);
+ cfs_waitq_signal(&d->opd_pre_waitq);
+ }
+}
+
+
+/*
+ * OSP tries to maintain pool of available objects so that calls to create
+ * objects don't block most of time
+ *
+ * each time OSP gets connected to OST, we should start from precreation cleanup
+ */
+static inline int osp_precreate_running(struct osp_device *d)
+{
+ return !!(d->opd_pre_thread.t_flags & SVC_RUNNING);
+}
+
+static inline int osp_precreate_stopped(struct osp_device *d)
+{
+ return !!(d->opd_pre_thread.t_flags & SVC_STOPPED);
+}
+
+static inline int osp_precreate_near_empty_nolock(struct osp_device *d)
+{
+ int window = d->opd_pre_last_created - d->opd_pre_next;
+
+ /* don't consider new precreation till OST is healty and
+ * has free space */
+ return ((window - d->opd_pre_reserved < d->opd_pre_grow_count / 2) &&
+ (d->opd_pre_status == 0));
+}
+
+static inline int osp_precreate_near_empty(struct osp_device *d)
+{
+ int rc;
+
+ /* XXX: do we really need locking here? */
+ cfs_spin_lock(&d->opd_pre_lock);
+ rc = osp_precreate_near_empty_nolock(d);
+ cfs_spin_unlock(&d->opd_pre_lock);
+ return rc;
+}
+
+static int osp_precreate_send(struct osp_device *d)
+{
+ struct ptlrpc_request *req;
+ struct obd_import *imp;
+ struct ost_body *body;
+ int rc, grow, diff;
+
+ ENTRY;
+
+ /* don't precreate new objects till OST healthy and has free space */
+ if (unlikely(d->opd_pre_status)) {
+ CDEBUG(D_INFO, "%s: don't send new precreate: rc = %d\n",
+ d->opd_obd->obd_name, d->opd_pre_status);
+ RETURN(0);
+ }
+
+ /*
+ * if not connection/initialization is compeleted, ignore
+ */
+ imp = d->opd_obd->u.cli.cl_import;
+ LASSERT(imp);
+
+ req = ptlrpc_request_alloc(imp, &RQF_OST_CREATE);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+ req->rq_request_portal = OST_CREATE_PORTAL;
+ /* we should not resend create request - anyway we will have delorphan
+ * and kill these objects */
+ req->rq_no_delay = req->rq_no_resend = 1;
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
+ if (rc) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+
+ cfs_spin_lock(&d->opd_pre_lock);
+ if (d->opd_pre_grow_count > d->opd_pre_max_grow_count / 2)
+ d->opd_pre_grow_count = d->opd_pre_max_grow_count / 2;
+ grow = d->opd_pre_grow_count;
+ cfs_spin_unlock(&d->opd_pre_lock);
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+ LASSERT(body);
+ body->oa.o_id = d->opd_pre_last_created + grow;
+ body->oa.o_seq = FID_SEQ_OST_MDT0; /* XXX: support for CMD? */
+ body->oa.o_valid = OBD_MD_FLGROUP;
+
+ ptlrpc_request_set_replen(req);
+
+ rc = ptlrpc_queue_wait(req);
+ if (rc) {
+ CERROR("%s: can't precreate: rc = %d\n",
+ d->opd_obd->obd_name, rc);
+ GOTO(out_req, rc);
+ }
+ LASSERT(req->rq_transno == 0);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+ if (body == NULL)
+ GOTO(out_req, rc = -EPROTO);
+
+ CDEBUG(D_HA, "new last_created %lu\n", (unsigned long) body->oa.o_id);
+ LASSERT(body->oa.o_id > d->opd_pre_next);
+
+ diff = body->oa.o_id - d->opd_pre_last_created;
+
+ cfs_spin_lock(&d->opd_pre_lock);
+ if (diff < grow) {
+ /* the OST has not managed to create all the
+ * objects we asked for */
+ d->opd_pre_grow_count = max(diff, OST_MIN_PRECREATE);
+ d->opd_pre_grow_slow = 1;
+ } else {
+ /* the OST is able to keep up with the work,
+ * we could consider increasing grow_count
+ * next time if needed */
+ d->opd_pre_grow_slow = 0;
+ }
+ d->opd_pre_last_created = body->oa.o_id;
+ cfs_spin_unlock(&d->opd_pre_lock);
+ CDEBUG(D_OTHER, "current precreated pool: %llu-%llu\n",
+ d->opd_pre_next, d->opd_pre_last_created);
+
+out_req:
+ /* now we can wakeup all users awaiting for objects */
+ osp_pre_update_status(d, rc);
+ cfs_waitq_signal(&d->opd_pre_user_waitq);
+
+ ptlrpc_req_finished(req);
+ RETURN(rc);
+}
+
+/**
+ * asks OST to clean precreate orphans
+ * and gets next id for new objects
+ */
+static int osp_precreate_cleanup_orphans(struct osp_device *d)
+{
+ struct ptlrpc_request *req = NULL;
+ struct obd_import *imp;
+ struct ost_body *body;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(d->opd_recovery_completed);
+ LASSERT(d->opd_pre_reserved == 0);
+
+ imp = d->opd_obd->u.cli.cl_import;
+ LASSERT(imp);
+
+ req = ptlrpc_request_alloc(imp, &RQF_OST_CREATE);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
+ if (rc) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+ if (body == NULL)
+ GOTO(out_req, rc = -EPROTO);
+
+ body->oa.o_flags = OBD_FL_DELORPHAN;
+ body->oa.o_valid = OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
+ body->oa.o_seq = FID_SEQ_OST_MDT0;
+
+ /* remove from NEXT after used one */
+ body->oa.o_id = d->opd_last_used_id + 1;
+
+ ptlrpc_request_set_replen(req);
+
+ /* Don't resend the delorphan req */
+ req->rq_no_resend = req->rq_no_delay = 1;
+
+ rc = ptlrpc_queue_wait(req);
+ if (rc)
+ GOTO(out_req, rc);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+ if (body == NULL)
+ GOTO(out_req, rc = -EPROTO);
+
+ /*
+ * OST provides us with id new pool starts from in body->oa.o_id
+ */
+ cfs_spin_lock(&d->opd_pre_lock);
+ if (le64_to_cpu(d->opd_last_used_id) > body->oa.o_id) {
+ d->opd_pre_grow_count = OST_MIN_PRECREATE +
+ le64_to_cpu(d->opd_last_used_id) -
+ body->oa.o_id;
+ d->opd_pre_last_created = le64_to_cpu(d->opd_last_used_id) + 1;
+ } else {
+ d->opd_pre_grow_count = OST_MIN_PRECREATE;
+ d->opd_pre_last_created = body->oa.o_id + 1;
+ }
+ d->opd_pre_next = d->opd_pre_last_created;
+ d->opd_pre_grow_slow = 0;
+ cfs_spin_unlock(&d->opd_pre_lock);
+
+ /* now we can wakeup all users awaiting for objects */
+ osp_pre_update_status(d, rc);
+ cfs_waitq_signal(&d->opd_pre_user_waitq);
+
+ CDEBUG(D_HA, "Got last_id "LPU64" from OST, last_used is "LPU64
+ ", next "LPU64"\n", body->oa.o_id,
+ le64_to_cpu(d->opd_last_used_id), d->opd_pre_next);
+
+out_req:
+ ptlrpc_req_finished(req);
+ RETURN(rc);
+}
+
+/*
+ * the function updates current precreation status used: functional or not
+ *
+ * rc is a last code from the transport, rc == 0 meaning transport works
+ * well and users of lod can use objects from this OSP
+ *
+ * the status depends on current usage of OST
+ */
+void osp_pre_update_status(struct osp_device *d, int rc)
+{
+ struct obd_statfs *msfs = &d->opd_statfs;
+ int old = d->opd_pre_status;
+ __u64 used;
+
+ d->opd_pre_status = rc;
+ if (rc)
+ goto out;
+
+ if (likely(msfs->os_type)) {
+ used = min_t(__u64, (msfs->os_blocks - msfs->os_bfree) >> 10,
+ 1 << 30);
+ if ((msfs->os_ffree < 32) || (msfs->os_bavail < used)) {
+ d->opd_pre_status = -ENOSPC;
+ if (old != -ENOSPC)
+ CDEBUG(D_INFO, "%s: status: "LPU64" blocks, "
+ LPU64" free, "LPU64" used, "LPU64" "
+ "avail -> %d: rc = %d\n",
+ d->opd_obd->obd_name, msfs->os_blocks,
+ msfs->os_bfree, used, msfs->os_bavail,
+ d->opd_pre_status, rc);
+ } else if (old == -ENOSPC) {
+ d->opd_pre_status = 0;
+ d->opd_pre_grow_slow = 0;
+ d->opd_pre_grow_count = OST_MIN_PRECREATE;
+ cfs_waitq_signal(&d->opd_pre_waitq);
+ CDEBUG(D_INFO, "%s: no space: "LPU64" blocks, "LPU64
+ " free, "LPU64" used, "LPU64" avail -> %d: "
+ "rc = %d\n", d->opd_obd->obd_name,
+ msfs->os_blocks, msfs->os_bfree, used,
+ msfs->os_bavail, d->opd_pre_status, rc);
+ }
+ }
+
+out:
+ cfs_waitq_signal(&d->opd_pre_user_waitq);
+}
+
+static int osp_precreate_thread(void *_arg)
+{
+ struct osp_device *d = _arg;
+ struct ptlrpc_thread *thread = &d->opd_pre_thread;
+ struct l_wait_info lwi = { 0 };
+ char pname[16];
+ int rc;
+
+ ENTRY;
+
+ sprintf(pname, "osp-pre-%u\n", d->opd_index);
+ cfs_daemonize(pname);
+
+ cfs_spin_lock(&d->opd_pre_lock);
+ thread->t_flags = SVC_RUNNING;
+ cfs_spin_unlock(&d->opd_pre_lock);
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+
+ while (osp_precreate_running(d)) {
+ /*
+ * need to be connected to OST
+ */
+ while (osp_precreate_running(d)) {
+ l_wait_event(d->opd_pre_waitq,
+ !osp_precreate_running(d) ||
+ d->opd_new_connection, &lwi);
+
+ if (!osp_precreate_running(d))
+ break;
+
+ if (!d->opd_new_connection)
+ continue;
+
+ /* got connected */
+ d->opd_new_connection = 0;
+ d->opd_got_disconnected = 0;
+ break;
+ }
+
+ osp_statfs_update(d);
+
+ /*
+ * wait for local recovery to finish, so we can cleanup orphans
+ * orphans are all objects since "last used" (assigned), but
+ * there might be objects reserved and in some cases they won't
+ * be used. we can't cleanup them till we're sure they won't be
+ * used. so we block new reservations and wait till all reserved
+ * objects either user or released.
+ */
+ l_wait_event(d->opd_pre_waitq, (!d->opd_pre_reserved &&
+ d->opd_recovery_completed) ||
+ !osp_precreate_running(d) ||
+ d->opd_got_disconnected, &lwi);
+
+ if (osp_precreate_running(d) && !d->opd_got_disconnected) {
+ rc = osp_precreate_cleanup_orphans(d);
+ if (rc) {
+ CERROR("%s: cannot cleanup orphans: rc = %d\n",
+ d->opd_obd->obd_name, rc);
+ }
+ }
+
+ /*
+ * connected, can handle precreates now
+ */
+ while (osp_precreate_running(d)) {
+ l_wait_event(d->opd_pre_waitq,
+ !osp_precreate_running(d) ||
+ osp_precreate_near_empty(d) ||
+ osp_statfs_need_update(d) ||
+ d->opd_got_disconnected, &lwi);
+
+ if (!osp_precreate_running(d))
+ break;
+
+ /* something happened to the connection
+ * have to start from the beginning */
+ if (d->opd_got_disconnected)
+ break;
+
+ if (osp_statfs_need_update(d))
+ osp_statfs_update(d);
+
+ if (osp_precreate_near_empty(d)) {
+ rc = osp_precreate_send(d);
+ /* osp_precreate_send() sets opd_pre_status
+ * in case of error, that prevent the using of
+ * failed device. */
+ if (rc != 0 && rc != -ENOSPC &&
+ rc != -ETIMEDOUT && rc != -ENOTCONN)
+ CERROR("%s: cannot precreate objects:"
+ " rc = %d\n",
+ d->opd_obd->obd_name, rc);
+ }
+ }
+ }
+
+ thread->t_flags = SVC_STOPPED;
+ cfs_waitq_signal(&thread->t_ctl_waitq);
+
+ RETURN(0);
+}
+
+static int osp_precreate_ready_condition(struct osp_device *d)
+{
+ /* ready if got enough precreated objects */
+ if (d->opd_pre_next + d->opd_pre_reserved < d->opd_pre_last_created)
+ return 1;
+
+ /* ready if OST reported no space */
+ if (d->opd_pre_status != 0)
+ return 1;
+
+ return 0;
+}
+
+static int osp_precreate_timeout_condition(void *data)
+{
+ struct osp_device *d = data;
+
+ LCONSOLE_WARN("%s: slow creates, last="LPU64", next="LPU64", "
+ "reserved="LPU64", status=%d\n",
+ d->opd_obd->obd_name, d->opd_pre_last_created,
+ d->opd_pre_next, d->opd_pre_reserved,
+ d->opd_pre_status);
+
+ return 0;
+}
+
+/*
+ * called to reserve object in the pool
+ * return codes:
+ * ENOSPC - no space on corresponded OST
+ * EAGAIN - precreation is in progress, try later
+ * EIO - no access to OST
+ */
+int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d)
+{
+ struct l_wait_info lwi;
+ cfs_time_t expire = cfs_time_shift(obd_timeout);
+ int precreated, rc;
+
+ ENTRY;
+
+ LASSERT(d->opd_pre_last_created >= d->opd_pre_next);
+
+ lwi = LWI_TIMEOUT(cfs_time_seconds(obd_timeout),
+ osp_precreate_timeout_condition, d);
+
+ /*
+ * wait till:
+ * - preallocation is done
+ * - no free space expected soon
+ * - can't connect to OST for too long (obd_timeout)
+ */
+ while ((rc = d->opd_pre_status) == 0 || rc == -ENOSPC ||
+ rc == -ENODEV) {
+ if (unlikely(rc == -ENODEV)) {
+ if (cfs_time_aftereq(cfs_time_current(), expire))
+ break;
+ }
+
+ /*
+ * increase number of precreations
+ */
+ if (d->opd_pre_grow_count < d->opd_pre_max_grow_count &&
+ d->opd_pre_grow_slow == 0 &&
+ (d->opd_pre_last_created - d->opd_pre_next <=
+ d->opd_pre_grow_count / 4 + 1)) {
+ cfs_spin_lock(&d->opd_pre_lock);
+ d->opd_pre_grow_slow = 1;
+ d->opd_pre_grow_count *= 2;
+ cfs_spin_unlock(&d->opd_pre_lock);
+ }
+
+ /*
+ * we never use the last object in the window
+ */
+ cfs_spin_lock(&d->opd_pre_lock);
+ precreated = d->opd_pre_last_created - d->opd_pre_next;
+ if (precreated > d->opd_pre_reserved) {
+ d->opd_pre_reserved++;
+ cfs_spin_unlock(&d->opd_pre_lock);
+ rc = 0;
+
+ /* XXX: don't wake up if precreation is in progress */
+ if (osp_precreate_near_empty_nolock(d))
+ cfs_waitq_signal(&d->opd_pre_waitq);
+
+ break;
+ }
+ cfs_spin_unlock(&d->opd_pre_lock);
+
+ /* XXX: don't wake up if precreation is in progress */
+ cfs_waitq_signal(&d->opd_pre_waitq);
+
+ l_wait_event(d->opd_pre_user_waitq,
+ osp_precreate_ready_condition(d), &lwi);
+ }
+
+ RETURN(rc);
+}
+
+/*
+ * this function relies on reservation made before
+ */
+__u64 osp_precreate_get_id(struct osp_device *d)
+{
+ obd_id objid;
+
+ /* grab next id from the pool */
+ cfs_spin_lock(&d->opd_pre_lock);
+ LASSERT(d->opd_pre_next <= d->opd_pre_last_created);
+ objid = d->opd_pre_next++;
+ d->opd_pre_reserved--;
+ /*
+ * last_used_id must be changed along with getting new id otherwise
+ * we might miscalculate gap causing object loss or leak
+ */
+ osp_update_last_id(d, objid);
+ cfs_spin_unlock(&d->opd_pre_lock);
+
+ /*
+ * probably main thread suspended orphan cleanup till
+ * all reservations are released, see comment in
+ * osp_precreate_thread() just before orphan cleanup
+ */
+ if (unlikely(d->opd_pre_reserved == 0 && d->opd_pre_status))
+ cfs_waitq_signal(&d->opd_pre_waitq);
+
+ return objid;
+}
+
+/*
+ *
+ */
+int osp_object_truncate(const struct lu_env *env, struct dt_object *dt,
+ __u64 size)
+{
+ struct osp_device *d = lu2osp_dev(dt->do_lu.lo_dev);
+ struct ptlrpc_request *req = NULL;
+ struct obd_import *imp;
+ struct ost_body *body;
+ struct obdo *oa = NULL;
+ int rc;
+
+ ENTRY;
+
+ imp = d->opd_obd->u.cli.cl_import;
+ LASSERT(imp);
+
+ req = ptlrpc_request_alloc(imp, &RQF_OST_PUNCH);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ /* XXX: capa support? */
+ /* osc_set_capa_size(req, &RMF_CAPA1, capa); */
+ rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
+ if (rc) {
+ ptlrpc_request_free(req);
+ RETURN(rc);
+ }
+
+ /*
+ * XXX: decide how do we do here with resend
+ * if we don't resend, then client may see wrong file size
+ * if we do resend, then MDS thread can get stuck for quite long
+ */
+ req->rq_no_resend = req->rq_no_delay = 1;
+
+ req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
+ ptlrpc_at_set_req_timeout(req);
+
+ OBD_ALLOC_PTR(oa);
+ if (oa == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ rc = fid_ostid_pack(lu_object_fid(&dt->do_lu), &oa->o_oi);
+ LASSERT(rc == 0);
+ oa->o_size = size;
+ oa->o_blocks = OBD_OBJECT_EOF;
+ oa->o_valid = OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
+ OBD_MD_FLID | OBD_MD_FLGROUP;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
+ LASSERT(body);
+ lustre_set_wire_obdo(&body->oa, oa);
+
+ /* XXX: capa support? */
+ /* osc_pack_capa(req, body, capa); */
+
+ ptlrpc_request_set_replen(req);
+
+ rc = ptlrpc_queue_wait(req);
+ if (rc)
+ CERROR("can't punch object: %d\n", rc);
+out:
+ ptlrpc_req_finished(req);
+ if (oa)
+ OBD_FREE_PTR(oa);
+ RETURN(rc);
+}
+
+int osp_init_precreate(struct osp_device *d)
+{
+ struct l_wait_info lwi = { 0 };
+ int rc;
+
+ ENTRY;
+
+ /* initially precreation isn't ready */
+ d->opd_pre_status = -EAGAIN;
+ d->opd_pre_next = 1;
+ d->opd_pre_last_created = 1;
+ d->opd_pre_reserved = 0;
+ d->opd_got_disconnected = 1;
+ d->opd_pre_grow_slow = 0;
+ d->opd_pre_grow_count = OST_MIN_PRECREATE;
+ d->opd_pre_min_grow_count = OST_MIN_PRECREATE;
+ d->opd_pre_max_grow_count = OST_MAX_PRECREATE;
+
+ cfs_spin_lock_init(&d->opd_pre_lock);
+ cfs_waitq_init(&d->opd_pre_waitq);
+ cfs_waitq_init(&d->opd_pre_user_waitq);
+ cfs_waitq_init(&d->opd_pre_thread.t_ctl_waitq);
+
+ /*
+ * Initialize statfs-related things
+ */
+ d->opd_statfs_maxage = 5; /* default update interval */
+ d->opd_statfs_fresh_till = cfs_time_shift(-1000);
+ CDEBUG(D_OTHER, "current %llu, fresh till %llu\n",
+ (unsigned long long)cfs_time_current(),
+ (unsigned long long)d->opd_statfs_fresh_till);
+ cfs_timer_init(&d->opd_statfs_timer, osp_statfs_timer_cb, d);
+
+ /*
+ * start thread handling precreation and statfs updates
+ */
+ rc = cfs_create_thread(osp_precreate_thread, d, 0);
+ if (rc < 0) {
+ CERROR("can't start precreate thread %d\n", rc);
+ RETURN(rc);
+ }
+
+ l_wait_event(d->opd_pre_thread.t_ctl_waitq,
+ osp_precreate_running(d) || osp_precreate_stopped(d),
+ &lwi);
+
+ RETURN(0);
+}
+
+void osp_precreate_fini(struct osp_device *d)
+{
+ struct ptlrpc_thread *thread = &d->opd_pre_thread;
+
+ ENTRY;
+
+ cfs_timer_disarm(&d->opd_statfs_timer);
+
+ thread->t_flags = SVC_STOPPING;
+ cfs_waitq_signal(&d->opd_pre_waitq);
+
+ cfs_wait_event(thread->t_ctl_waitq, thread->t_flags & SVC_STOPPED);
+
+ EXIT;
+}
+
git://git.whamcloud.com / fs / lustre-release.git / commitdiff