/* * 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) 2012, Intel Corporation. */ /* * 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 * Author: Mikhail Pershin */ #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) CDEBUG(D_CACHE, "%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; /* * no updates till reply */ cfs_timer_disarm(&d->opd_statfs_timer); d->opd_statfs_fresh_till = cfs_time_shift(obd_timeout * 1000); d->opd_statfs_update_in_progress = 1; ptlrpcd_add_req(req, PDL_POLICY_ROUND, -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_used_id; /* 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? */ spin_lock(&d->opd_pre_lock); rc = osp_precreate_near_empty_nolock(d); 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); } 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; 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, "%s: new last_created "LPU64"\n", d->opd_obd->obd_name, body->oa.o_id); LASSERT(body->oa.o_id > d->opd_pre_used_id); diff = body->oa.o_id - d->opd_pre_last_created; 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; spin_unlock(&d->opd_pre_lock); CDEBUG(D_OTHER, "current precreated pool: %llu-%llu\n", d->opd_pre_used_id, 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); } static int osp_get_lastid_from_ost(struct osp_device *d) { struct ptlrpc_request *req; struct obd_import *imp; obd_id *reply; char *tmp; int rc; imp = d->opd_obd->u.cli.cl_import; LASSERT(imp); req = ptlrpc_request_alloc(imp, &RQF_OST_GET_INFO_LAST_ID); if (req == NULL) RETURN(-ENOMEM); req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY, RCL_CLIENT, sizeof(KEY_LAST_ID)); rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO); if (rc) { ptlrpc_request_free(req); RETURN(rc); } tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); memcpy(tmp, KEY_LAST_ID, sizeof(KEY_LAST_ID)); req->rq_no_delay = req->rq_no_resend = 1; ptlrpc_request_set_replen(req); rc = ptlrpc_queue_wait(req); if (rc) { /* bad-bad OST.. let sysadm sort this out */ ptlrpc_set_import_active(imp, 0); GOTO(out, rc); } reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID); if (reply == NULL) GOTO(out, rc = -EPROTO); d->opd_last_used_id = *reply; CDEBUG(D_HA, "%s: got last_id "LPU64" from OST\n", d->opd_obd->obd_name, d->opd_last_used_id); out: 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; struct l_wait_info lwi = { 0 }; int update_status = 0; int rc; ENTRY; /* * 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. also can't we allow new reservations because they may * end up getting orphans being cleaned up below. so we block * new reservations and wait till all reserved objects either * user or released. */ spin_lock(&d->opd_pre_lock); d->opd_pre_recovering = 1; spin_unlock(&d->opd_pre_lock); /* * The locking above makes sure the opd_pre_reserved check below will * catch all osp_precreate_reserve() calls who find * "!opd_pre_recovering". */ 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) GOTO(out, rc = -EAGAIN); CDEBUG(D_HA, "%s: going to cleanup orphans since "LPU64"\n", d->opd_obd->obd_name, d->opd_last_used_id); if (d->opd_last_used_id < 2) { /* lastid looks strange... ask OST */ rc = osp_get_lastid_from_ost(d); if (rc) GOTO(out, rc); } imp = d->opd_obd->u.cli.cl_import; LASSERT(imp); req = ptlrpc_request_alloc(imp, &RQF_OST_CREATE); if (req == NULL) GOTO(out, rc = -ENOMEM); rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE); if (rc) { ptlrpc_request_free(req); GOTO(out, rc); } body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY); if (body == NULL) GOTO(out, 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; body->oa.o_id = d->opd_last_used_id; 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) { update_status = 1; GOTO(out, rc); } body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY); if (body == NULL) GOTO(out, rc = -EPROTO); /* * OST provides us with id new pool starts from in body->oa.o_id */ 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); } else { d->opd_pre_grow_count = OST_MIN_PRECREATE; d->opd_pre_last_created = body->oa.o_id; } /* * This empties the pre-creation pool and effectively blocks any new * reservations. */ d->opd_pre_used_id = d->opd_pre_last_created; d->opd_pre_grow_slow = 0; spin_unlock(&d->opd_pre_lock); CDEBUG(D_HA, "%s: Got last_id "LPU64" from OST, last_used is "LPU64 ", pre_used "LPU64"\n", d->opd_obd->obd_name, body->oa.o_id, le64_to_cpu(d->opd_last_used_id), d->opd_pre_used_id); out: if (req) ptlrpc_req_finished(req); d->opd_pre_recovering = 0; /* * If rc is zero, the pre-creation window should have been emptied. * Since waking up the herd would be useless without pre-created * objects, we defer the signal to osp_precreate_send() in that case. */ if (rc != 0) { if (update_status) { CERROR("%s: cannot cleanup orphans: rc = %d\n", d->opd_obd->obd_name, rc); /* we can't proceed from here, OST seem to * be in a bad shape, better to wait for * a new instance of the server and repeat * from the beginning. notify possible waiters * this OSP isn't quite functional yet */ osp_pre_update_status(d, rc); } else { cfs_waitq_signal(&d->opd_pre_user_waitq); } } 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; /* Add a bit of hysteresis so this flag isn't continually flapping, * and ensure that new files don't get extremely fragmented due to * only a small amount of available space in the filesystem. * We want to set the NOSPC flag when there is less than ~0.1% free * and clear it when there is at least ~0.2% free space, so: * avail < ~0.1% max max = avail + used * 1025 * avail < avail + used used = blocks - free * 1024 * avail < used * 1024 * avail < blocks - free * avail < ((blocks - free) >> 10) * * On very large disk, say 16TB 0.1% will be 16 GB. We don't want to * lose that amount of space so in those cases we report no space left * if their is less than 1 GB left. */ 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); CDEBUG(D_INFO, "non-commited changes: %lu, in progress: %u\n", d->opd_syn_changes, d->opd_syn_rpc_in_progress); } 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); spin_lock(&d->opd_pre_lock); thread->t_flags = SVC_RUNNING; 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); /* * Clean up orphans or recreate missing objects. */ rc = osp_precreate_cleanup_orphans(d); if (rc != 0) continue; /* * 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) { __u64 next; if (d->opd_pre_recovering) return 0; /* ready if got enough precreated objects */ /* we need to wait for others (opd_pre_reserved) and our object (+1) */ next = d->opd_pre_used_id + d->opd_pre_reserved + 1; if (next <= d->opd_pre_last_created) return 1; /* ready if OST reported no space and no destoys in progress */ if (d->opd_syn_changes + d->opd_syn_rpc_in_progress == 0 && 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", syn_changes=%lu, " "syn_rpc_in_progress=%d, status=%d\n", d->opd_obd->obd_name, d->opd_pre_last_created, d->opd_pre_used_id, d->opd_pre_reserved, d->opd_syn_changes, d->opd_syn_rpc_in_progress, d->opd_pre_status); return 1; } /* * 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; int count = 0; ENTRY; LASSERT(d->opd_pre_last_created >= d->opd_pre_used_id); 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; } #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 3, 90, 0) /* * to address Andreas's concern on possible busy-loop * between this thread and osp_precreate_send() */ if (unlikely(count++ == 1000)) { osp_precreate_timeout_condition(d); LBUG(); } #endif /* * 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_used_id <= d->opd_pre_grow_count / 4 + 1)) { spin_lock(&d->opd_pre_lock); d->opd_pre_grow_slow = 1; d->opd_pre_grow_count *= 2; spin_unlock(&d->opd_pre_lock); } spin_lock(&d->opd_pre_lock); precreated = d->opd_pre_last_created - d->opd_pre_used_id; if (precreated > d->opd_pre_reserved && !d->opd_pre_recovering) { d->opd_pre_reserved++; 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; } spin_unlock(&d->opd_pre_lock); /* * all precreated objects have been used and no-space * status leave us no chance to succeed very soon * but if there is destroy in progress, then we should * wait till that is done - some space might be released */ if (unlikely(rc == -ENOSPC)) { if (d->opd_syn_changes) { /* force local commit to release space */ dt_commit_async(env, d->opd_storage); } if (d->opd_syn_rpc_in_progress) { /* just wait till destroys are done */ /* see l_wait_even() few lines below */ } if (d->opd_syn_changes + d->opd_syn_rpc_in_progress == 0) { /* no hope for free space */ break; } } /* 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 */ spin_lock(&d->opd_pre_lock); LASSERT(d->opd_pre_used_id < d->opd_pre_last_created); objid = ++d->opd_pre_used_id; 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); 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_used_id = 0; d->opd_pre_last_created = 0; 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; 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; }