static inline int out_check_resent(const struct lu_env *env, struct dt_device *dt, struct dt_object *obj, struct ptlrpc_request *req, out_reconstruct_t reconstruct, struct object_update_reply *reply, int index) { if (likely(!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))) return 0; if (req_xid_is_last(req)) { struct lsd_client_data *lcd; /* XXX this does not support mulitple transactions yet, i.e. * only 1 update RPC each time betwee MDTs */ lcd = req->rq_export->exp_target_data.ted_lcd; req->rq_transno = lcd->lcd_last_transno; req->rq_status = lcd->lcd_last_result; if (req->rq_status != 0) req->rq_transno = 0; lustre_msg_set_transno(req->rq_repmsg, req->rq_transno); lustre_msg_set_status(req->rq_repmsg, req->rq_status); DEBUG_REQ(D_RPCTRACE, req, "restoring transno "LPD64"status %d", req->rq_transno, req->rq_status); reconstruct(env, dt, obj, reply, index); return 1; } DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")", req->rq_export->exp_target_data.ted_lcd->lcd_last_xid); return 0; }
/** * Disconnect a bulk desc from the network. Idempotent. Not * thread-safe (i.e. only interlocks with completion callback). * Returns 1 on success or 0 if network unregistration failed for whatever * reason. */ int ptlrpc_unregister_bulk(struct ptlrpc_request *req, int async) { struct ptlrpc_bulk_desc *desc = req->rq_bulk; wait_queue_head_t *wq; int rc; LASSERT(!in_interrupt()); /* might sleep */ /* Let's setup deadline for reply unlink. */ if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_LONG_BULK_UNLINK) && async && req->rq_bulk_deadline == 0 && cfs_fail_val == 0) req->rq_bulk_deadline = ktime_get_real_seconds() + LONG_UNLINK; if (ptlrpc_client_bulk_active(req) == 0) /* completed or */ return 1; /* never registered */ LASSERT(desc->bd_req == req); /* bd_req NULL until registered */ /* the unlink ensures the callback happens ASAP and is the last * one. If it fails, it must be because completion just happened, * but we must still wait_event() in this case to give liblustre * a chance to run client_bulk_callback() */ mdunlink_iterate_helper(desc->bd_mds, desc->bd_md_max_brw); if (ptlrpc_client_bulk_active(req) == 0) /* completed or */ return 1; /* never registered */ /* Move to "Unregistering" phase as bulk was not unlinked yet. */ ptlrpc_rqphase_move(req, RQ_PHASE_UNREG_BULK); /* Do not wait for unlink to finish. */ if (async) return 0; if (req->rq_set) wq = &req->rq_set->set_waitq; else wq = &req->rq_reply_waitq; for (;;) { /* Network access will complete in finite time but the HUGE * timeout lets us CWARN for visibility of sluggish LNDs */ int cnt = 0; while (cnt < LONG_UNLINK && (rc = wait_event_idle_timeout(*wq, !ptlrpc_client_bulk_active(req), HZ)) == 0) cnt += 1; if (rc > 0) { ptlrpc_rqphase_move(req, req->rq_next_phase); return 1; } DEBUG_REQ(D_WARNING, req, "Unexpectedly long timeout: desc %p", desc); } return 0; }
/* * Client's outgoing request callback */ void request_out_callback(lnet_event_t *ev) { struct ptlrpc_cb_id *cbid = ev->md.user_ptr; struct ptlrpc_request *req = cbid->cbid_arg; LASSERT(ev->type == LNET_EVENT_SEND || ev->type == LNET_EVENT_UNLINK); LASSERT(ev->unlinked); DEBUG_REQ(D_NET, req, "type %d, status %d", ev->type, ev->status); sptlrpc_request_out_callback(req); req->rq_real_sent = cfs_time_current_sec(); if (ev->type == LNET_EVENT_UNLINK || ev->status != 0) { /* Failed send: make it seem like the reply timed out, just * like failing sends in client.c does currently... */ spin_lock(&req->rq_lock); req->rq_net_err = 1; spin_unlock(&req->rq_lock); ptlrpc_client_wake_req(req); } ptlrpc_req_finished(req); }
/** * Disconnect a bulk desc from the network. Idempotent. Not * thread-safe (i.e. only interlocks with completion callback). * Returns 1 on success or 0 if network unregistration failed for whatever * reason. */ int ptlrpc_unregister_bulk(struct ptlrpc_request *req, int async) { struct ptlrpc_bulk_desc *desc = req->rq_bulk; struct l_wait_info lwi; int rc; ENTRY; LASSERT(!in_interrupt()); /* might sleep */ /* Let's setup deadline for reply unlink. */ if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_LONG_BULK_UNLINK) && async && req->rq_bulk_deadline == 0) req->rq_bulk_deadline = cfs_time_current_sec() + LONG_UNLINK; if (ptlrpc_client_bulk_active(req) == 0) /* completed or */ RETURN(1); /* never registered */ LASSERT(desc->bd_req == req); /* bd_req NULL until registered */ /* the unlink ensures the callback happens ASAP and is the last * one. If it fails, it must be because completion just happened, * but we must still l_wait_event() in this case to give liblustre * a chance to run client_bulk_callback() */ mdunlink_iterate_helper(desc->bd_mds, desc->bd_md_max_brw); if (ptlrpc_client_bulk_active(req) == 0) /* completed or */ RETURN(1); /* never registered */ /* Move to "Unregistering" phase as bulk was not unlinked yet. */ ptlrpc_rqphase_move(req, RQ_PHASE_UNREGISTERING); /* Do not wait for unlink to finish. */ if (async) RETURN(0); for (;;) { #ifdef __KERNEL__ /* The wq argument is ignored by user-space wait_event macros */ wait_queue_head_t *wq = (req->rq_set != NULL) ? &req->rq_set->set_waitq : &req->rq_reply_waitq; #endif /* Network access will complete in finite time but the HUGE * timeout lets us CWARN for visibility of sluggish NALs */ lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(LONG_UNLINK), cfs_time_seconds(1), NULL, NULL); rc = l_wait_event(*wq, !ptlrpc_client_bulk_active(req), &lwi); if (rc == 0) { ptlrpc_rqphase_move(req, req->rq_next_phase); RETURN(1); } LASSERT(rc == -ETIMEDOUT); DEBUG_REQ(D_WARNING, req, "Unexpectedly long timeout: desc %p", desc); } RETURN(0); }
/* Setinfo coming from Server (eg MDT) to Client (eg MDC)! */ static int ldlm_handle_setinfo(struct ptlrpc_request *req) { struct obd_device *obd = req->rq_export->exp_obd; char *key; void *val; int keylen, vallen; int rc = -ENOSYS; DEBUG_REQ(D_HSM, req, "%s: handle setinfo\n", obd->obd_name); req_capsule_set(&req->rq_pill, &RQF_OBD_SET_INFO); key = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY); if (key == NULL) { DEBUG_REQ(D_IOCTL, req, "no set_info key"); return -EFAULT; } keylen = req_capsule_get_size(&req->rq_pill, &RMF_SETINFO_KEY, RCL_CLIENT); val = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL); if (val == NULL) { DEBUG_REQ(D_IOCTL, req, "no set_info val"); return -EFAULT; } vallen = req_capsule_get_size(&req->rq_pill, &RMF_SETINFO_VAL, RCL_CLIENT); /* We are responsible for swabbing contents of val */ if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) /* Pass it on to mdc (the "export" in this case) */ rc = obd_set_info_async(req->rq_svc_thread->t_env, req->rq_export, sizeof(KEY_HSM_COPYTOOL_SEND), KEY_HSM_COPYTOOL_SEND, vallen, val, NULL); else DEBUG_REQ(D_WARNING, req, "ignoring unknown key %s", key); return rc; }
static inline void ldlm_callback_errmsg(struct ptlrpc_request *req, const char *msg, int rc, struct lustre_handle *handle) { DEBUG_REQ((req->rq_no_reply || rc) ? D_WARNING : D_DLMTRACE, req, "%s: [nid %s] [rc %d] [lock "LPX64"]", msg, libcfs_id2str(req->rq_peer), rc, handle ? handle->cookie : 0); if (req->rq_no_reply) CWARN("No reply was sent, maybe cause bug 21636.\n"); else if (rc) CWARN("Send reply failed, maybe cause bug 21636.\n"); }
/* Partial request to create object only */ static int mdt_md_mkobj(struct mdt_thread_info *info) { struct mdt_device *mdt = info->mti_mdt; struct mdt_object *o; struct mdt_body *repbody; struct md_attr *ma = &info->mti_attr; int rc; ENTRY; DEBUG_REQ(D_INODE, mdt_info_req(info), "Partial create "DFID"", PFID(info->mti_rr.rr_fid2)); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); o = mdt_object_find(info->mti_env, mdt, info->mti_rr.rr_fid2, MDT_OBJ_MAY_NOT_EXIST); if (!IS_ERR(o)) { struct md_object *next = mdt_object_child(o); ma->ma_need = MA_INODE; ma->ma_valid = 0; /* * Cross-ref create can encounter already created obj in case of * recovery, just get attr in that case. */ if (mdt_object_exists(o) == 1) { rc = mo_attr_get(info->mti_env, next, ma); } else { /* * Here, NO permission check for object_create, * such check has been done on the original MDS. */ rc = mo_object_create(info->mti_env, next, &info->mti_spec, ma); } if (rc == 0) { /* Return fid & attr to client. */ if (ma->ma_valid & MA_INODE) mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(o)); } mdt_object_put(info->mti_env, o); } else rc = PTR_ERR(o); mdt_create_pack_capa(info, rc, o, repbody); RETURN(rc); }
static void ptlrpc_at_set_reply(struct ptlrpc_request *req, int flags) { struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt; struct ptlrpc_service *svc = svcpt->scp_service; int service_time = max_t(int, cfs_time_current_sec() - req->rq_arrival_time.tv_sec, 1); if (!(flags & PTLRPC_REPLY_EARLY) && (req->rq_type != PTL_RPC_MSG_ERR) && (req->rq_reqmsg != NULL) && !(lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY | MSG_REQ_REPLAY_DONE | MSG_LOCK_REPLAY_DONE))) { /* early replies, errors and recovery requests don't count * toward our service time estimate */ int oldse = at_measured(&svcpt->scp_at_estimate, service_time); if (oldse != 0) { DEBUG_REQ(D_ADAPTTO, req, "svc %s changed estimate from %d to %d", svc->srv_name, oldse, at_get(&svcpt->scp_at_estimate)); } } /* Report actual service time for client latency calc */ lustre_msg_set_service_time(req->rq_repmsg, service_time); /* Report service time estimate for future client reqs, but report 0 * (to be ignored by client) if it's a error reply during recovery. * (bz15815) */ if (req->rq_type == PTL_RPC_MSG_ERR && (req->rq_export == NULL || req->rq_export->exp_obd->obd_recovering)) lustre_msg_set_timeout(req->rq_repmsg, 0); else lustre_msg_set_timeout(req->rq_repmsg, at_get(&svcpt->scp_at_estimate)); if (req->rq_reqmsg && !(lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) { CDEBUG(D_ADAPTTO, "No early reply support: flags=%#x " "req_flags=%#x magic=%d:%x/%x len=%d\n", flags, lustre_msg_get_flags(req->rq_reqmsg), lustre_msg_is_v1(req->rq_reqmsg), lustre_msg_get_magic(req->rq_reqmsg), lustre_msg_get_magic(req->rq_repmsg), req->rq_replen); } }
static int ptlrpc_ping(struct obd_import *imp) { struct ptlrpc_request *req; req = ptlrpc_prep_ping(imp); if (!req) { CERROR("OOM trying to ping %s->%s\n", imp->imp_obd->obd_uuid.uuid, obd2cli_tgt(imp->imp_obd)); return -ENOMEM; } DEBUG_REQ(D_INFO, req, "pinging %s->%s", imp->imp_obd->obd_uuid.uuid, obd2cli_tgt(imp->imp_obd)); ptlrpcd_add_req(req); return 0; }
static inline int out_check_resent(const struct lu_env *env, struct dt_device *dt, struct dt_object *obj, struct ptlrpc_request *req, out_reconstruct_t reconstruct, struct update_reply *reply, int index) { if (likely(!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT))) return 0; if (req_xid_is_last(req)) { reconstruct(env, dt, obj, reply, index); return 1; } DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")", req->rq_export->exp_target_data.ted_lcd->lcd_last_xid); return 0; }
int ptlrpc_ping(struct obd_import *imp) { struct ptlrpc_request *req; ENTRY; req = ptlrpc_prep_ping(imp); if (req == NULL) { CERROR("OOM trying to ping %s->%s\n", imp->imp_obd->obd_uuid.uuid, obd2cli_tgt(imp->imp_obd)); RETURN(-ENOMEM); } DEBUG_REQ(D_INFO, req, "pinging %s->%s", imp->imp_obd->obd_uuid.uuid, obd2cli_tgt(imp->imp_obd)); ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1); RETURN(0); }
/* * Add a new non-blocking request to a non-blocking set. */ int pscrpc_nbreqset_add(struct pscrpc_request_set *set, struct pscrpc_request *rq) { int rc; rq->rq_compl = &set->set_compl; rc = pscrpc_push_req(rq); if (rc) { rq->rq_compl = NULL; DEBUG_REQ(PLL_ERROR, rq, "send failure: %s", pfl_strerror(rc)); } else { /* * Adding after is OK because it will sit on the list * marked COMPLETED if it finishes before this add * occurs. */ pscrpc_set_add_new_req(set, rq); } return (rc); }
/* * VBR: save parent version in reply and child version getting by its name. * Version of child is getting and checking during its lookup. If */ static int mdt_reint_unlink(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct lu_fid *child_fid = &info->mti_tmp_fid1; struct mdt_object *mp; struct mdt_object *mc; struct mdt_lock_handle *parent_lh; struct mdt_lock_handle *child_lh; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) RETURN(err_serious(-ENOENT)); /* * step 1: lock the parent. Note, this may be child in case of * remote operation denoted by ->mti_cross_ref flag. */ parent_lh = &info->mti_lh[MDT_LH_PARENT]; if (info->mti_cross_ref) { /* * Init reg lock for cross ref case when we need to do only * ref del locally. */ mdt_lock_reg_init(parent_lh, LCK_PW); } else { mdt_lock_pdo_init(parent_lh, LCK_PW, rr->rr_name, rr->rr_namelen); } mp = mdt_object_find_lock(info, rr->rr_fid1, parent_lh, MDS_INODELOCK_UPDATE, MDT_OBJ_MUST_EXIST); if (IS_ERR(mp)) { rc = PTR_ERR(mp); /* errors are possible here in cross-ref cases, see below */ if (info->mti_cross_ref) rc = 0; GOTO(out, rc); } rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(out_unlock_parent, rc); mdt_reint_init_ma(info, ma); if (!ma->ma_lmm || !ma->ma_cookie) GOTO(out_unlock_parent, rc = -EINVAL); if (info->mti_cross_ref) { /* * Remote partial operation. It is possible that replay may * happen on parent MDT and this operation will be repeated. * Therefore the object absense is allowed case and nothing * should be done here. */ if (mdt_object_exists(mp) > 0) { mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA); rc = mo_ref_del(info->mti_env, mdt_object_child(mp), ma); if (rc == 0) mdt_handle_last_unlink(info, mp, ma); } else rc = 0; GOTO(out_unlock_parent, rc); } /* step 2: find & lock the child */ lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); /* lookup child object along with version checking */ rc = mdt_lookup_version_check(info, mp, lname, child_fid, 1); if (rc != 0) GOTO(out_unlock_parent, rc); /* We will lock the child regardless it is local or remote. No harm. */ mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid, MDT_OBJ_MUST_EXIST); if (IS_ERR(mc)) GOTO(out_unlock_parent, rc = PTR_ERR(mc)); child_lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(child_lh, LCK_EX); rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_FULL, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mc); GOTO(out_unlock_parent, rc); } mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_UNLINK_WRITE); /* save version when object is locked */ mdt_version_get_save(info, mc, 1); /* * Now we can only make sure we need MA_INODE, in mdd layer, will check * whether need MA_LOV and MA_COOKIE. */ ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), mdt_object_child(mc), lname, ma); if (rc == 0) mdt_handle_last_unlink(info, mc, ma); if (ma->ma_valid & MA_INODE) { switch (ma->ma_attr.la_mode & S_IFMT) { case S_IFDIR: mdt_counter_incr(req->rq_export, LPROC_MDT_RMDIR); break; case S_IFREG: case S_IFLNK: case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: mdt_counter_incr(req->rq_export, LPROC_MDT_UNLINK); break; default: LASSERTF(0, "bad file type %o unlinking\n", ma->ma_attr.la_mode); } } EXIT; mdt_object_unlock_put(info, mc, child_lh, rc); out_unlock_parent: mdt_object_unlock_put(info, mp, parent_lh, rc); out: return rc; }
/** * Send request \a request. * if \a noreply is set, don't expect any reply back and don't set up * reply buffers. * Returns 0 on success or error code. */ int ptl_send_rpc(struct ptlrpc_request *request, int noreply) { int rc; int rc2; int mpflag = 0; struct ptlrpc_connection *connection; lnet_handle_me_t reply_me_h; lnet_md_t reply_md; struct obd_import *imp = request->rq_import; struct obd_device *obd = imp->imp_obd; ENTRY; if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_DROP_RPC)) RETURN(0); LASSERT(request->rq_type == PTL_RPC_MSG_REQUEST); LASSERT(request->rq_wait_ctx == 0); /* If this is a re-transmit, we're required to have disengaged * cleanly from the previous attempt */ LASSERT(!request->rq_receiving_reply); LASSERT(!((lustre_msg_get_flags(request->rq_reqmsg) & MSG_REPLAY) && (imp->imp_state == LUSTRE_IMP_FULL))); if (unlikely(obd != NULL && obd->obd_fail)) { CDEBUG(D_HA, "muting rpc for failed imp obd %s\n", obd->obd_name); /* this prevents us from waiting in ptlrpc_queue_wait */ spin_lock(&request->rq_lock); request->rq_err = 1; spin_unlock(&request->rq_lock); request->rq_status = -ENODEV; RETURN(-ENODEV); } connection = imp->imp_connection; lustre_msg_set_handle(request->rq_reqmsg, &imp->imp_remote_handle); lustre_msg_set_type(request->rq_reqmsg, PTL_RPC_MSG_REQUEST); lustre_msg_set_conn_cnt(request->rq_reqmsg, imp->imp_conn_cnt); lustre_msghdr_set_flags(request->rq_reqmsg, imp->imp_msghdr_flags); /* If it's the first time to resend the request for EINPROGRESS, * we need to allocate a new XID (see after_reply()), it's different * from the resend for reply timeout. */ if (request->rq_nr_resend != 0 && list_empty(&request->rq_unreplied_list)) { __u64 min_xid = 0; /* resend for EINPROGRESS, allocate new xid to avoid reply * reconstruction */ spin_lock(&imp->imp_lock); ptlrpc_assign_next_xid_nolock(request); request->rq_mbits = request->rq_xid; min_xid = ptlrpc_known_replied_xid(imp); spin_unlock(&imp->imp_lock); lustre_msg_set_last_xid(request->rq_reqmsg, min_xid); DEBUG_REQ(D_RPCTRACE, request, "Allocating new xid for " "resend on EINPROGRESS"); } else if (request->rq_bulk != NULL) { ptlrpc_set_bulk_mbits(request); lustre_msg_set_mbits(request->rq_reqmsg, request->rq_mbits); } if (list_empty(&request->rq_unreplied_list) || request->rq_xid <= imp->imp_known_replied_xid) { DEBUG_REQ(D_ERROR, request, "xid: "LPU64", replied: "LPU64", " "list_empty:%d\n", request->rq_xid, imp->imp_known_replied_xid, list_empty(&request->rq_unreplied_list)); LBUG(); } /** For enabled AT all request should have AT_SUPPORT in the * FULL import state when OBD_CONNECT_AT is set */ LASSERT(AT_OFF || imp->imp_state != LUSTRE_IMP_FULL || (imp->imp_msghdr_flags & MSGHDR_AT_SUPPORT) || !(imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_AT)); if (request->rq_resend) { lustre_msg_add_flags(request->rq_reqmsg, MSG_RESENT); if (request->rq_resend_cb != NULL) request->rq_resend_cb(request, &request->rq_async_args); } if (request->rq_memalloc) mpflag = cfs_memory_pressure_get_and_set(); rc = sptlrpc_cli_wrap_request(request); if (rc == -ENOMEM) /* set rq_sent so that this request is treated * as a delayed send in the upper layers */ request->rq_sent = cfs_time_current_sec(); if (rc) GOTO(out, rc); /* bulk register should be done after wrap_request() */ if (request->rq_bulk != NULL) { rc = ptlrpc_register_bulk (request); if (rc != 0) GOTO(out, rc); } if (!noreply) { LASSERT (request->rq_replen != 0); if (request->rq_repbuf == NULL) { LASSERT(request->rq_repdata == NULL); LASSERT(request->rq_repmsg == NULL); rc = sptlrpc_cli_alloc_repbuf(request, request->rq_replen); if (rc) { /* this prevents us from looping in * ptlrpc_queue_wait */ spin_lock(&request->rq_lock); request->rq_err = 1; spin_unlock(&request->rq_lock); request->rq_status = rc; GOTO(cleanup_bulk, rc); } } else { request->rq_repdata = NULL; request->rq_repmsg = NULL; } rc = LNetMEAttach(request->rq_reply_portal,/*XXX FIXME bug 249*/ connection->c_peer, request->rq_xid, 0, LNET_UNLINK, LNET_INS_AFTER, &reply_me_h); if (rc != 0) { CERROR("LNetMEAttach failed: %d\n", rc); LASSERT (rc == -ENOMEM); GOTO(cleanup_bulk, rc = -ENOMEM); } } spin_lock(&request->rq_lock); /* We are responsible for unlinking the reply buffer */ request->rq_reply_unlinked = noreply; request->rq_receiving_reply = !noreply; /* Clear any flags that may be present from previous sends. */ request->rq_req_unlinked = 0; request->rq_replied = 0; request->rq_err = 0; request->rq_timedout = 0; request->rq_net_err = 0; request->rq_resend = 0; request->rq_restart = 0; request->rq_reply_truncated = 0; spin_unlock(&request->rq_lock); if (!noreply) { reply_md.start = request->rq_repbuf; reply_md.length = request->rq_repbuf_len; /* Allow multiple early replies */ reply_md.threshold = LNET_MD_THRESH_INF; /* Manage remote for early replies */ reply_md.options = PTLRPC_MD_OPTIONS | LNET_MD_OP_PUT | LNET_MD_MANAGE_REMOTE | LNET_MD_TRUNCATE; /* allow to make EOVERFLOW error */; reply_md.user_ptr = &request->rq_reply_cbid; reply_md.eq_handle = ptlrpc_eq_h; /* We must see the unlink callback to set rq_reply_unlinked, * so we can't auto-unlink */ rc = LNetMDAttach(reply_me_h, reply_md, LNET_RETAIN, &request->rq_reply_md_h); if (rc != 0) { CERROR("LNetMDAttach failed: %d\n", rc); LASSERT (rc == -ENOMEM); spin_lock(&request->rq_lock); /* ...but the MD attach didn't succeed... */ request->rq_receiving_reply = 0; spin_unlock(&request->rq_lock); GOTO(cleanup_me, rc = -ENOMEM); } CDEBUG(D_NET, "Setup reply buffer: %u bytes, xid "LPU64 ", portal %u\n", request->rq_repbuf_len, request->rq_xid, request->rq_reply_portal); } /* add references on request for request_out_callback */ ptlrpc_request_addref(request); if (obd != NULL && obd->obd_svc_stats != NULL) lprocfs_counter_add(obd->obd_svc_stats, PTLRPC_REQACTIVE_CNTR, atomic_read(&imp->imp_inflight)); OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_DELAY_SEND, request->rq_timeout + 5); do_gettimeofday(&request->rq_sent_tv); request->rq_sent = cfs_time_current_sec(); /* We give the server rq_timeout secs to process the req, and add the network latency for our local timeout. */ request->rq_deadline = request->rq_sent + request->rq_timeout + ptlrpc_at_get_net_latency(request); ptlrpc_pinger_sending_on_import(imp); DEBUG_REQ(D_INFO, request, "send flg=%x", lustre_msg_get_flags(request->rq_reqmsg)); rc = ptl_send_buf(&request->rq_req_md_h, request->rq_reqbuf, request->rq_reqdata_len, LNET_NOACK_REQ, &request->rq_req_cbid, connection, request->rq_request_portal, request->rq_xid, 0); if (likely(rc == 0)) GOTO(out, rc); request->rq_req_unlinked = 1; ptlrpc_req_finished(request); if (noreply) GOTO(out, rc); cleanup_me: /* MEUnlink is safe; the PUT didn't even get off the ground, and * nobody apart from the PUT's target has the right nid+XID to * access the reply buffer. */ rc2 = LNetMEUnlink(reply_me_h); LASSERT (rc2 == 0); /* UNLINKED callback called synchronously */ LASSERT(!request->rq_receiving_reply); cleanup_bulk: /* We do sync unlink here as there was no real transfer here so * the chance to have long unlink to sluggish net is smaller here. */ ptlrpc_unregister_bulk(request, 0); out: if (request->rq_memalloc) cfs_memory_pressure_restore(mpflag); return rc; }
/* partial operation for rename */ static int mdt_reint_rename_tgt(struct mdt_thread_info *info) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct mdt_object *mtgtdir; struct mdt_object *mtgt = NULL; struct mdt_lock_handle *lh_tgtdir; struct mdt_lock_handle *lh_tgt = NULL; struct lu_fid *tgt_fid = &info->mti_tmp_fid1; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "rename_tgt: insert (%s->"DFID") in "DFID, rr->rr_tgt, PFID(rr->rr_fid2), PFID(rr->rr_fid1)); /* step 1: lookup & lock the tgt dir. */ lh_tgtdir = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lh_tgtdir, LCK_PW, rr->rr_tgt, rr->rr_tgtlen); mtgtdir = mdt_object_find_lock(info, rr->rr_fid1, lh_tgtdir, MDS_INODELOCK_UPDATE, MDT_OBJ_MUST_EXIST); if (IS_ERR(mtgtdir)) RETURN(PTR_ERR(mtgtdir)); /* step 2: find & lock the target object if exists. */ mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA); lname = mdt_name(info->mti_env, (char *)rr->rr_tgt, rr->rr_tgtlen); rc = mdo_lookup(info->mti_env, mdt_object_child(mtgtdir), lname, tgt_fid, &info->mti_spec); if (rc != 0 && rc != -ENOENT) { GOTO(out_unlock_tgtdir, rc); } else if (rc == 0) { /* * In case of replay that name can be already inserted, check * that and do nothing if so. */ if (lu_fid_eq(tgt_fid, rr->rr_fid2)) GOTO(out_unlock_tgtdir, rc); lh_tgt = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(lh_tgt, LCK_EX); mtgt = mdt_object_find_lock(info, tgt_fid, lh_tgt, MDS_INODELOCK_LOOKUP, MDT_OBJ_MUST_EXIST); if (IS_ERR(mtgt)) GOTO(out_unlock_tgtdir, rc = PTR_ERR(mtgt)); mdt_reint_init_ma(info, ma); if (!ma->ma_lmm || !ma->ma_cookie) GOTO(out_unlock_tgt, rc = -EINVAL); rc = mdo_rename_tgt(info->mti_env, mdt_object_child(mtgtdir), mdt_object_child(mtgt), rr->rr_fid2, lname, ma); } else /* -ENOENT */ { rc = mdo_name_insert(info->mti_env, mdt_object_child(mtgtdir), lname, rr->rr_fid2, ma); } /* handle last link of tgt object */ if (rc == 0 && mtgt) mdt_handle_last_unlink(info, mtgt, ma); EXIT; out_unlock_tgt: if (mtgt) mdt_object_unlock_put(info, mtgt, lh_tgt, rc); out_unlock_tgtdir: mdt_object_unlock_put(info, mtgtdir, lh_tgtdir, rc); return rc; }
/* * VBR: we save three versions in reply: * 0 - parent. Check that parent version is the same during replay. * 1 - name. Version of 'name' if file exists with the same name or * ENOENT_VERSION, it is needed because file may appear due to missed replays. * 2 - child. Version of child by FID. Must be ENOENT. It is mostly sanity * check. */ static int mdt_md_create(struct mdt_thread_info *info) { struct mdt_device *mdt = info->mti_mdt; struct mdt_object *parent; struct mdt_object *child; struct mdt_lock_handle *lh; struct mdt_body *repbody; struct md_attr *ma = &info->mti_attr; struct mdt_reint_record *rr = &info->mti_rr; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, mdt_info_req(info), "Create (%s->"DFID") in "DFID, rr->rr_name, PFID(rr->rr_fid2), PFID(rr->rr_fid1)); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); lh = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lh, LCK_PW, rr->rr_name, rr->rr_namelen); parent = mdt_object_find_lock(info, rr->rr_fid1, lh, MDS_INODELOCK_UPDATE); if (IS_ERR(parent)) RETURN(PTR_ERR(parent)); if (mdt_object_obf(parent)) GOTO(out_put_parent, rc = -EPERM); rc = mdt_version_get_check_save(info, parent, 0); if (rc) GOTO(out_put_parent, rc); /* * Check child name version during replay. * During create replay a file may exist with same name. */ lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); rc = mdt_lookup_version_check(info, parent, lname, &info->mti_tmp_fid1, 1); if (rc == 0) GOTO(out_put_parent, rc = -EEXIST); /* -ENOENT is expected here */ if (rc != -ENOENT) GOTO(out_put_parent, rc); /* save version of file name for replay, it must be ENOENT here */ mdt_enoent_version_save(info, 1); child = mdt_object_new(info->mti_env, mdt, rr->rr_fid2); if (likely(!IS_ERR(child))) { struct md_object *next = mdt_object_child(parent); if (mdt_object_remote(child)) { struct seq_server_site *ss; struct lu_ucred *uc = mdt_ucred(info); if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) { CERROR("%s: Creating remote dir is only " "permitted for administrator: rc = %d\n", mdt2obd_dev(mdt)->obd_name, -EPERM); GOTO(out_put_child, rc = -EPERM); } ss = mdt_seq_site(mdt); if (ss->ss_node_id != 0 && mdt->mdt_enable_remote_dir == 0) { CERROR("%s: remote dir is only permitted on" " MDT0 or set_param" " mdt.*.enable_remote_dir=1\n", mdt2obd_dev(mdt)->obd_name); GOTO(out_put_child, rc = -EPERM); } } ma->ma_need = MA_INODE; ma->ma_valid = 0; /* capa for cross-ref will be stored here */ ma->ma_capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1); LASSERT(ma->ma_capa); mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_CREATE_WRITE); /* Version of child will be updated on disk. */ info->mti_mos = child; rc = mdt_version_get_check_save(info, child, 2); if (rc) GOTO(out_put_child, rc); /* Let lower layer know current lock mode. */ info->mti_spec.sp_cr_mode = mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode); /* * Do not perform lookup sanity check. We know that name does * not exist. */ info->mti_spec.sp_cr_lookup = 0; info->mti_spec.sp_feat = &dt_directory_features; rc = mdo_create(info->mti_env, next, lname, mdt_object_child(child), &info->mti_spec, ma); if (rc == 0) rc = mdt_attr_get_complex(info, child, ma); if (rc == 0) { /* Return fid & attr to client. */ if (ma->ma_valid & MA_INODE) mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(child)); } out_put_child: mdt_object_put(info->mti_env, child); } else { rc = PTR_ERR(child); } mdt_create_pack_capa(info, rc, child, repbody); out_put_parent: mdt_object_unlock_put(info, parent, lh, rc); RETURN(rc); }
/* * Client's incoming reply callback */ void reply_in_callback(lnet_event_t *ev) { struct ptlrpc_cb_id *cbid = ev->md.user_ptr; struct ptlrpc_request *req = cbid->cbid_arg; DEBUG_REQ(D_NET, req, "type %d, status %d", ev->type, ev->status); LASSERT(ev->type == LNET_EVENT_PUT || ev->type == LNET_EVENT_UNLINK); LASSERT(ev->md.start == req->rq_repbuf); LASSERT(ev->offset + ev->mlength <= req->rq_repbuf_len); /* We've set LNET_MD_MANAGE_REMOTE for all outgoing requests for adaptive timeouts' early reply. */ LASSERT((ev->md.options & LNET_MD_MANAGE_REMOTE) != 0); spin_lock(&req->rq_lock); req->rq_receiving_reply = 0; req->rq_early = 0; if (ev->unlinked) req->rq_must_unlink = 0; if (ev->status) goto out_wake; if (ev->type == LNET_EVENT_UNLINK) { LASSERT(ev->unlinked); DEBUG_REQ(D_NET, req, "unlink"); goto out_wake; } if (ev->mlength < ev->rlength) { CDEBUG(D_RPCTRACE, "truncate req %p rpc %d - %d+%d\n", req, req->rq_replen, ev->rlength, ev->offset); req->rq_reply_truncate = 1; req->rq_replied = 1; req->rq_status = -EOVERFLOW; req->rq_nob_received = ev->rlength + ev->offset; goto out_wake; } if ((ev->offset == 0) && ((lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT))) { /* Early reply */ DEBUG_REQ(D_ADAPTTO, req, "Early reply received: mlen=%u offset=%d replen=%d " "replied=%d unlinked=%d", ev->mlength, ev->offset, req->rq_replen, req->rq_replied, ev->unlinked); req->rq_early_count++; /* number received, client side */ if (req->rq_replied) /* already got the real reply */ goto out_wake; req->rq_early = 1; req->rq_reply_off = ev->offset; req->rq_nob_received = ev->mlength; /* And we're still receiving */ req->rq_receiving_reply = 1; } else { /* Real reply */ req->rq_rep_swab_mask = 0; req->rq_replied = 1; req->rq_reply_off = ev->offset; req->rq_nob_received = ev->mlength; /* LNetMDUnlink can't be called under the LNET_LOCK, so we must unlink in ptlrpc_unregister_reply */ DEBUG_REQ(D_INFO, req, "reply in flags=%x mlen=%u offset=%d replen=%d", lustre_msg_get_flags(req->rq_reqmsg), ev->mlength, ev->offset, req->rq_replen); } req->rq_import->imp_last_reply_time = cfs_time_current_sec(); out_wake: /* NB don't unlock till after wakeup; req can disappear under us * since we don't have our own ref */ ptlrpc_client_wake_req(req); spin_unlock(&req->rq_lock); }
/* * VBR: save parent version in reply and child version getting by its name. * Version of child is getting and checking during its lookup. If */ static int mdt_reint_unlink(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct lu_fid *child_fid = &info->mti_tmp_fid1; struct mdt_object *mp; struct mdt_object *mc; struct mdt_lock_handle *parent_lh; struct mdt_lock_handle *child_lh; struct lu_name *lname; int rc; int no_name = 0; ENTRY; DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) RETURN(err_serious(-ENOENT)); if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1)) RETURN(-EPERM); /* * step 1: Found the parent. */ mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(mp)) { rc = PTR_ERR(mp); GOTO(out, rc); } parent_lh = &info->mti_lh[MDT_LH_PARENT]; lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); if (mdt_object_remote(mp)) { mdt_lock_reg_init(parent_lh, LCK_EX); rc = mdt_remote_object_lock(info, mp, &parent_lh->mlh_rreg_lh, parent_lh->mlh_rreg_mode, MDS_INODELOCK_UPDATE); if (rc != ELDLM_OK) GOTO(put_parent, rc); } else { mdt_lock_pdo_init(parent_lh, LCK_PW, rr->rr_name, rr->rr_namelen); rc = mdt_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE, MDT_LOCAL_LOCK); if (rc) GOTO(put_parent, rc); rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(unlock_parent, rc); } /* step 2: find & lock the child */ /* lookup child object along with version checking */ fid_zero(child_fid); rc = mdt_lookup_version_check(info, mp, lname, child_fid, 1); if (rc != 0) { /* Name might not be able to find during resend of * remote unlink, considering following case. * dir_A is a remote directory, the name entry of * dir_A is on MDT0, the directory is on MDT1, * * 1. client sends unlink req to MDT1. * 2. MDT1 sends name delete update to MDT0. * 3. name entry is being deleted in MDT0 synchronously. * 4. MDT1 is restarted. * 5. client resends unlink req to MDT1. So it can not * find the name entry on MDT0 anymore. * In this case, MDT1 only needs to destory the local * directory. * */ if (mdt_object_remote(mp) && rc == -ENOENT && !fid_is_zero(rr->rr_fid2) && lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { no_name = 1; *child_fid = *rr->rr_fid2; } else { GOTO(unlock_parent, rc); } } if (fid_is_obf(child_fid) || fid_is_dot_lustre(child_fid)) GOTO(unlock_parent, rc = -EPERM); mdt_reint_init_ma(info, ma); /* We will lock the child regardless it is local or remote. No harm. */ mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid); if (IS_ERR(mc)) GOTO(unlock_parent, rc = PTR_ERR(mc)); child_lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(child_lh, LCK_EX); if (mdt_object_remote(mc)) { struct mdt_body *repbody; if (!fid_is_zero(rr->rr_fid2)) { CDEBUG(D_INFO, "%s: name %s can not find "DFID"\n", mdt_obd_name(info->mti_mdt), (char *)rr->rr_name, PFID(mdt_object_fid(mc))); GOTO(put_child, rc = -ENOENT); } CDEBUG(D_INFO, "%s: name %s: "DFID" is another MDT\n", mdt_obd_name(info->mti_mdt), (char *)rr->rr_name, PFID(mdt_object_fid(mc))); if (!mdt_is_dne_client(req->rq_export)) /* Return -EIO for old client */ GOTO(put_child, rc = -EIO); if (info->mti_spec.sp_rm_entry) { struct lu_ucred *uc = mdt_ucred(info); if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) { CERROR("%s: unlink remote entry is only " "permitted for administrator: rc = %d\n", mdt_obd_name(info->mti_mdt), -EPERM); GOTO(put_child, rc = -EPERM); } ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), NULL, lname, ma, no_name); GOTO(put_child, rc); } /* Revoke the LOOKUP lock of the remote object granted by * this MDT. Since the unlink will happen on another MDT, * it will release the LOOKUP lock right away. Then What * would happen if another client try to grab the LOOKUP * lock at the same time with unlink XXX */ mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP, MDT_CROSS_LOCK); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); LASSERT(repbody != NULL); repbody->fid1 = *mdt_object_fid(mc); repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); GOTO(unlock_child, rc = -EREMOTE); } else if (info->mti_spec.sp_rm_entry) { rc = -EPERM; CDEBUG(D_INFO, "%s: no rm_entry on local dir '%s': rc = %d\n", mdt_obd_name(info->mti_mdt), (char *)rr->rr_name, rc); GOTO(put_child, rc); } /* We used to acquire MDS_INODELOCK_FULL here but we can't do * this now because a running HSM restore on the child (unlink * victim) will hold the layout lock. See LU-4002. */ rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE, MDT_CROSS_LOCK); if (rc != 0) GOTO(put_child, rc); mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_UNLINK_WRITE); /* save version when object is locked */ mdt_version_get_save(info, mc, 1); /* * Now we can only make sure we need MA_INODE, in mdd layer, will check * whether need MA_LOV and MA_COOKIE. */ ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); mutex_lock(&mc->mot_lov_mutex); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), mdt_object_child(mc), lname, ma, no_name); mutex_unlock(&mc->mot_lov_mutex); if (rc == 0 && !lu_object_is_dying(&mc->mot_header)) rc = mdt_attr_get_complex(info, mc, ma); if (rc == 0) mdt_handle_last_unlink(info, mc, ma); if (ma->ma_valid & MA_INODE) { switch (ma->ma_attr.la_mode & S_IFMT) { case S_IFDIR: mdt_counter_incr(req, LPROC_MDT_RMDIR); break; case S_IFREG: case S_IFLNK: case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: mdt_counter_incr(req, LPROC_MDT_UNLINK); break; default: LASSERTF(0, "bad file type %o unlinking\n", ma->ma_attr.la_mode); } } EXIT; unlock_child: mdt_object_unlock(info, mc, child_lh, rc); put_child: mdt_object_put(info->mti_env, mc); unlock_parent: mdt_object_unlock(info, mp, parent_lh, rc); put_parent: mdt_object_put(info->mti_env, mp); out: return rc; }
/** * rsx_bulkserver - Setup a source or sink for a server. * @rq: RPC request associated with GET. * @type: GET_SINK receive from client or PUT_SOURCE to push to a client. * @ptl: portal to issue bulk xfer across. * @iov: iovec array of receive buffer. * @n: #iovecs. * Returns: 0 or negative errno on error. */ int rsx_bulkserver(struct pscrpc_request *rq, int type, int ptl, struct iovec *iov, int n) { int sum, i, rc, comms_error; struct pscrpc_bulk_desc *desc; struct l_wait_info lwi; uint64_t *v8; uint8_t *v1; psc_assert(type == BULK_GET_SINK || type == BULK_PUT_SOURCE); desc = pscrpc_prep_bulk_exp(rq, n, type, ptl); if (desc == NULL) { psclog_warnx("pscrpc_prep_bulk_exp returned a null desc"); return (-ENOMEM); // XXX errno } desc->bd_nob = 0; desc->bd_iov_count = n; memcpy(desc->bd_iov, iov, n * sizeof(*iov)); for (i = 0; i < n; i++) desc->bd_nob += iov[i].iov_len; /* Check for client eviction during previous I/O before proceeding. */ if (desc->bd_export->exp_failed) rc = -ENOTCONN; else rc = pscrpc_start_bulk_transfer(desc); if (rc == 0) { lwi = LWI_TIMEOUT_INTERVAL(OBD_TIMEOUT / 2, 100, pfl_rsx_timeout, desc); rc = pscrpc_svr_wait_event(&desc->bd_waitq, (!pscrpc_bulk_active(desc) || desc->bd_export->exp_failed), &lwi, NULL); LASSERT(rc == 0 || rc == -ETIMEDOUT); if (rc == -ETIMEDOUT) { DEBUG_REQ(PLL_ERROR, rq, "timeout on bulk GET"); pscrpc_abort_bulk(desc); } else if (desc->bd_export->exp_failed) { DEBUG_REQ(PLL_ERROR, rq, "eviction on bulk GET"); rc = -ENOTCONN; pscrpc_abort_bulk(desc); } else if (!desc->bd_success || desc->bd_nob_transferred != desc->bd_nob) { DEBUG_REQ(PLL_ERROR, rq, "%s bulk GET %d(%d)", desc->bd_success ? "truncated" : "network error on", desc->bd_nob_transferred, desc->bd_nob); rc = -ETIMEDOUT; } } else { DEBUG_REQ(PLL_ERROR, rq, "pscrpc I/O bulk get failed: " "rc=%d", rc); } comms_error = (rc != 0); /* count the number of bytes received, and hold for later... */ if (rc == 0) { v1 = desc->bd_iov[0].iov_base; v8 = desc->bd_iov[0].iov_base; if (v1 == NULL) { DEBUG_REQ(PLL_ERROR, rq, "desc->bd_iov[0].iov_base is NULL"); rc = -ENXIO; goto out; } DEBUG_REQ(PLL_DIAG, rq, "got %u bytes of bulk data across %d IOVs: " "first byte is %#x (%"PRIx64")", desc->bd_nob, desc->bd_iov_count, *v1, *v8); sum = 0; for (i = 0; i < desc->bd_iov_count; i++) sum += desc->bd_iov[i].iov_len; if (sum != desc->bd_nob) DEBUG_REQ(PLL_WARN, rq, "sum (%d) does not match bd_nob (%d)", sum, desc->bd_nob); //rc = pscrpc_reply(rq); } out: if (rc == 0) ; else if (!comms_error) { /* Only reply if there were no comm problems with bulk. */ rq->rq_status = rc; pscrpc_error(rq); } else { #if 0 // For now let's not free the reply state.. if (rq->rq_reply_state != NULL) { /* reply out callback would free */ pscrpc_rs_decref(rq->rq_reply_state); rq->rq_reply_state = NULL; rq->rq_repmsg = NULL; } #endif DEBUG_REQ(PLL_WARN, rq, "ignoring bulk I/O comm error; " "id %s - client will retry", libcfs_id2str(rq->rq_peer)); } pscrpc_free_bulk(desc); return (rc); }
/* * VBR: save versions in reply: 0 - parent; 1 - child by fid; 2 - target by * name. */ static int mdt_reint_link(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct mdt_object *ms; struct mdt_object *mp; struct mdt_lock_handle *lhs; struct mdt_lock_handle *lhp; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "link "DFID" to "DFID"/%s", PFID(rr->rr_fid1), PFID(rr->rr_fid2), rr->rr_name); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_LINK)) RETURN(err_serious(-ENOENT)); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); /* Invalid case so return error immediately instead of * processing it */ if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) RETURN(-EPERM); /* step 1: find & lock the target parent dir */ lhp = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lhp, LCK_PW, rr->rr_name, rr->rr_namelen); mp = mdt_object_find_lock(info, rr->rr_fid2, lhp, MDS_INODELOCK_UPDATE); if (IS_ERR(mp)) RETURN(PTR_ERR(mp)); if (mdt_object_obf(mp)) GOTO(out_unlock_parent, rc = -EPERM); rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(out_unlock_parent, rc); /* step 2: find & lock the source */ lhs = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(lhs, LCK_EX); ms = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(ms)) GOTO(out_unlock_parent, rc = PTR_ERR(ms)); if (mdt_object_remote(ms)) { mdt_object_put(info->mti_env, ms); CERROR("Target directory "DFID" is on another MDT\n", PFID(rr->rr_fid1)); GOTO(out_unlock_parent, rc = -EXDEV); } rc = mdt_object_lock(info, ms, lhs, MDS_INODELOCK_UPDATE, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, ms); GOTO(out_unlock_parent, rc); } /* step 3: link it */ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_LINK_WRITE); info->mti_mos = ms; rc = mdt_version_get_check_save(info, ms, 1); if (rc) GOTO(out_unlock_child, rc); lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); /** check target version by name during replay */ rc = mdt_lookup_version_check(info, mp, lname, &info->mti_tmp_fid1, 2); if (rc != 0 && rc != -ENOENT) GOTO(out_unlock_child, rc); /* save version of file name for replay, it must be ENOENT here */ if (!req_is_replay(mdt_info_req(info))) { info->mti_ver[2] = ENOENT_VERSION; mdt_version_save(mdt_info_req(info), info->mti_ver[2], 2); } rc = mdo_link(info->mti_env, mdt_object_child(mp), mdt_object_child(ms), lname, ma); if (rc == 0) mdt_counter_incr(req, LPROC_MDT_LINK); EXIT; out_unlock_child: mdt_object_unlock_put(info, ms, lhs, rc); out_unlock_parent: mdt_object_unlock_put(info, mp, lhp, rc); return rc; }
/* * VBR: save parent version in reply and child version getting by its name. * Version of child is getting and checking during its lookup. If */ static int mdt_reint_unlink(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct lu_fid *child_fid = &info->mti_tmp_fid1; struct mdt_object *mp; struct mdt_object *mc; struct mdt_lock_handle *parent_lh; struct mdt_lock_handle *child_lh; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) RETURN(err_serious(-ENOENT)); /* * step 1: Found the parent. */ mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(mp)) { rc = PTR_ERR(mp); GOTO(out, rc); } if (mdt_object_obf(mp)) GOTO(put_parent, rc = -EPERM); parent_lh = &info->mti_lh[MDT_LH_PARENT]; lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); if (mdt_object_remote(mp)) { mdt_lock_reg_init(parent_lh, LCK_EX); rc = mdt_remote_object_lock(info, mp, &parent_lh->mlh_rreg_lh, parent_lh->mlh_rreg_mode, MDS_INODELOCK_UPDATE); if (rc != ELDLM_OK) GOTO(put_parent, rc); } else { mdt_lock_pdo_init(parent_lh, LCK_PW, rr->rr_name, rr->rr_namelen); rc = mdt_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE, MDT_LOCAL_LOCK); if (rc) GOTO(put_parent, rc); rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(unlock_parent, rc); } /* step 2: find & lock the child */ /* lookup child object along with version checking */ fid_zero(child_fid); rc = mdt_lookup_version_check(info, mp, lname, child_fid, 1); if (rc != 0) GOTO(unlock_parent, rc); mdt_reint_init_ma(info, ma); /* We will lock the child regardless it is local or remote. No harm. */ mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid); if (IS_ERR(mc)) GOTO(unlock_parent, rc = PTR_ERR(mc)); child_lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(child_lh, LCK_EX); if (mdt_object_remote(mc)) { struct mdt_body *repbody; if (!fid_is_zero(rr->rr_fid2)) { CDEBUG(D_INFO, "%s: name %s can not find "DFID"\n", mdt2obd_dev(info->mti_mdt)->obd_name, (char *)rr->rr_name, PFID(mdt_object_fid(mc))); GOTO(unlock_parent, rc = -ENOENT); } CDEBUG(D_INFO, "%s: name %s: "DFID" is another MDT\n", mdt2obd_dev(info->mti_mdt)->obd_name, (char *)rr->rr_name, PFID(mdt_object_fid(mc))); if (info->mti_spec.sp_rm_entry) { struct lu_ucred *uc = mdt_ucred(info); if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) { CERROR("%s: unlink remote entry is only " "permitted for administrator: rc = %d\n", mdt2obd_dev(info->mti_mdt)->obd_name, -EPERM); GOTO(unlock_parent, rc = -EPERM); } ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), NULL, lname, ma); mdt_object_put(info->mti_env, mc); GOTO(unlock_parent, rc); } /* Revoke the LOOKUP lock of the remote object granted by * this MDT. Since the unlink will happen on another MDT, * it will release the LOOKUP lock right away. Then What * would happen if another client try to grab the LOOKUP * lock at the same time with unlink XXX */ mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP, MDT_CROSS_LOCK); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); LASSERT(repbody != NULL); repbody->fid1 = *mdt_object_fid(mc); repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); mdt_object_unlock_put(info, mc, child_lh, rc); GOTO(unlock_parent, rc = -EREMOTE); } else if (info->mti_spec.sp_rm_entry) { CERROR("%s: lfs rmdir should not be used on local dir %s\n", mdt2obd_dev(info->mti_mdt)->obd_name, (char *)rr->rr_name); mdt_object_put(info->mti_env, mc); GOTO(unlock_parent, rc = -EPERM); } rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_FULL, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mc); GOTO(unlock_parent, rc); } mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_UNLINK_WRITE); /* save version when object is locked */ mdt_version_get_save(info, mc, 1); /* * Now we can only make sure we need MA_INODE, in mdd layer, will check * whether need MA_LOV and MA_COOKIE. */ ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), mdt_object_child(mc), lname, ma); if (rc == 0 && !lu_object_is_dying(&mc->mot_header)) rc = mdt_attr_get_complex(info, mc, ma); if (rc == 0) mdt_handle_last_unlink(info, mc, ma); if (ma->ma_valid & MA_INODE) { switch (ma->ma_attr.la_mode & S_IFMT) { case S_IFDIR: mdt_counter_incr(req, LPROC_MDT_RMDIR); break; case S_IFREG: case S_IFLNK: case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: mdt_counter_incr(req, LPROC_MDT_UNLINK); break; default: LASSERTF(0, "bad file type %o unlinking\n", ma->ma_attr.la_mode); } } EXIT; mdt_object_unlock_put(info, mc, child_lh, rc); unlock_parent: mdt_object_unlock(info, mp, parent_lh, rc); put_parent: mdt_object_put(info->mti_env, mp); out: return rc; }
static int mdt_reint_setattr(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct md_attr *ma = &info->mti_attr; struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct mdt_export_data *med = &req->rq_export->exp_mdt_data; struct mdt_file_data *mfd; struct mdt_object *mo; struct mdt_body *repbody; int som_au, rc, rc2; ENTRY; DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1), (unsigned int)ma->ma_attr.la_valid); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); mo = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(mo)) GOTO(out, rc = PTR_ERR(mo)); if (mdt_object_obf(mo)) GOTO(out_put, rc = -EPERM); /* start a log jounal handle if needed */ if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM)) { if ((ma->ma_attr.la_valid & LA_SIZE) || (rr->rr_flags & MRF_OPEN_TRUNC)) { /* Check write access for the O_TRUNC case */ if (mdt_write_read(mo) < 0) GOTO(out_put, rc = -ETXTBSY); } } else if (info->mti_ioepoch && (info->mti_ioepoch->flags & MF_EPOCH_OPEN)) { /* Truncate case. IOEpoch is opened. */ rc = mdt_write_get(mo); if (rc) GOTO(out_put, rc); mfd = mdt_mfd_new(); if (mfd == NULL) { mdt_write_put(mo); GOTO(out_put, rc = -ENOMEM); } mdt_ioepoch_open(info, mo, 0); repbody->ioepoch = mo->mot_ioepoch; mdt_object_get(info->mti_env, mo); mdt_mfd_set_mode(mfd, MDS_FMODE_TRUNC); mfd->mfd_object = mo; mfd->mfd_xid = req->rq_xid; spin_lock(&med->med_open_lock); cfs_list_add(&mfd->mfd_list, &med->med_open_head); spin_unlock(&med->med_open_lock); repbody->handle.cookie = mfd->mfd_handle.h_cookie; } som_au = info->mti_ioepoch && info->mti_ioepoch->flags & MF_SOM_CHANGE; if (som_au) { /* SOM Attribute update case. Find the proper mfd and update * SOM attributes on the proper object. */ LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM); LASSERT(info->mti_ioepoch); spin_lock(&med->med_open_lock); mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle); if (mfd == NULL) { spin_unlock(&med->med_open_lock); CDEBUG(D_INODE, "no handle for file close: " "fid = "DFID": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1), info->mti_ioepoch->handle.cookie); GOTO(out_put, rc = -ESTALE); } LASSERT(mfd->mfd_mode == MDS_FMODE_SOM); LASSERT(!(info->mti_ioepoch->flags & MF_EPOCH_CLOSE)); class_handle_unhash(&mfd->mfd_handle); cfs_list_del_init(&mfd->mfd_list); spin_unlock(&med->med_open_lock); mdt_mfd_close(info, mfd); } else if ((ma->ma_valid & MA_INODE) && ma->ma_attr.la_valid) { LASSERT((ma->ma_valid & MA_LOV) == 0); rc = mdt_attr_set(info, mo, ma, rr->rr_flags); if (rc) GOTO(out_put, rc); } else if ((ma->ma_valid & MA_LOV) && (ma->ma_valid & MA_INODE)) { struct lu_buf *buf = &info->mti_buf; LASSERT(ma->ma_attr.la_valid == 0); buf->lb_buf = ma->ma_lmm; buf->lb_len = ma->ma_lmm_size; rc = mo_xattr_set(info->mti_env, mdt_object_child(mo), buf, XATTR_NAME_LOV, 0); if (rc) GOTO(out_put, rc); } else LBUG(); /* If file data is modified, add the dirty flag */ if (ma->ma_attr_flags & MDS_DATA_MODIFIED) rc = mdt_add_dirty_flag(info, mo, ma); ma->ma_need = MA_INODE; ma->ma_valid = 0; rc = mdt_attr_get_complex(info, mo, ma); if (rc != 0) GOTO(out_put, rc); mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo)); if (info->mti_mdt->mdt_opts.mo_oss_capa && exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA && S_ISREG(lu_object_attr(&mo->mot_obj.mo_lu)) && (ma->ma_attr.la_valid & LA_SIZE) && !som_au) { struct lustre_capa *capa; capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2); LASSERT(capa); capa->lc_opc = CAPA_OPC_OSS_DEFAULT | CAPA_OPC_OSS_TRUNC; rc = mo_capa_get(info->mti_env, mdt_object_child(mo), capa, 0); if (rc) GOTO(out_put, rc); repbody->valid |= OBD_MD_FLOSSCAPA; } EXIT; out_put: mdt_object_put(info->mti_env, mo); out: if (rc == 0) mdt_counter_incr(req, LPROC_MDT_SETATTR); mdt_client_compatibility(info); rc2 = mdt_fix_reply(info); if (rc == 0) rc = rc2; return rc; }
/* If mdc_setattr is called with an 'iattr', then it is a normal RPC that * should take the normal semaphore and go to the normal portal. * * If it is called with iattr->ia_valid & ATTR_FROM_OPEN, then it is a * magic open-path setattr that should take the setattr semaphore and * go to the setattr portal. */ int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data, void *ea, int ealen, void *ea2, int ea2len, struct ptlrpc_request **request, struct md_open_data **mod) { CFS_LIST_HEAD(cancels); struct ptlrpc_request *req; struct mdc_rpc_lock *rpc_lock; struct obd_device *obd = exp->exp_obd; int count = 0, rc; __u64 bits; ENTRY; LASSERT(op_data != NULL); bits = MDS_INODELOCK_UPDATE; if (op_data->op_attr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) bits |= MDS_INODELOCK_LOOKUP; if ((op_data->op_flags & MF_MDC_CANCEL_FID1) && (fid_is_sane(&op_data->op_fid1))) count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels, LCK_EX, bits); req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_REINT_SETATTR); if (req == NULL) { ldlm_lock_list_put(&cancels, l_bl_ast, count); RETURN(-ENOMEM); } mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1); if ((op_data->op_flags & (MF_SOM_CHANGE | MF_EPOCH_OPEN)) == 0) req_capsule_set_size(&req->rq_pill, &RMF_MDT_EPOCH, RCL_CLIENT, 0); req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT, ealen); req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT, ea2len); rc = mdc_prep_elc_req(exp, req, &cancels, count); if (rc) { ptlrpc_request_free(req); RETURN(rc); } if (op_data->op_attr.ia_valid & ATTR_FROM_OPEN) { req->rq_request_portal = MDS_SETATTR_PORTAL; ptlrpc_at_set_req_timeout(req); rpc_lock = obd->u.cli.cl_setattr_lock; } else { rpc_lock = obd->u.cli.cl_rpc_lock; } if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME)) CDEBUG(D_INODE, "setting mtime "CFS_TIME_T ", ctime "CFS_TIME_T"\n", LTIME_S(op_data->op_attr.ia_mtime), LTIME_S(op_data->op_attr.ia_ctime)); mdc_setattr_pack(req, op_data, ea, ealen, ea2, ea2len); ptlrpc_request_set_replen(req); if (mod && (op_data->op_flags & MF_EPOCH_OPEN) && req->rq_import->imp_replayable) { LASSERT(*mod == NULL); *mod = obd_mod_alloc(); if (*mod == NULL) { DEBUG_REQ(D_ERROR, req, "Can't allocate " "md_open_data"); } else { req->rq_replay = 1; req->rq_cb_data = *mod; (*mod)->mod_open_req = req; req->rq_commit_cb = mdc_commit_open; /** * Take an extra reference on \var mod, it protects \var * mod from being freed on eviction (commit callback is * called despite rq_replay flag). * Will be put on mdc_done_writing(). */ obd_mod_get(*mod); } } rc = mdc_reint(req, rpc_lock, LUSTRE_IMP_FULL); /* Save the obtained info in the original RPC for the replay case. */ if (rc == 0 && (op_data->op_flags & MF_EPOCH_OPEN)) { struct mdt_ioepoch *epoch; struct mdt_body *body; epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH); body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); LASSERT(epoch != NULL); LASSERT(body != NULL); epoch->handle = body->handle; epoch->ioepoch = body->ioepoch; req->rq_replay_cb = mdc_replay_open; /** bug 3633, open may be committed and estale answer is not error */ } else if (rc == -ESTALE && (op_data->op_flags & MF_SOM_CHANGE)) { rc = 0; } else if (rc == -ERESTARTSYS) { rc = 0; } *request = req; if (rc && req->rq_commit_cb) { /* Put an extra reference on \var mod on error case. */ obd_mod_put(*mod); req->rq_commit_cb(req); } RETURN(rc); }
/* * VBR: rename versions in reply: 0 - src parent; 1 - tgt parent; * 2 - src child; 3 - tgt child. * Update on disk version of src child. */ static int mdt_reint_rename(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct md_attr *ma = &info->mti_attr; struct ptlrpc_request *req = mdt_info_req(info); struct mdt_object *msrcdir; struct mdt_object *mtgtdir; struct mdt_object *mold; struct mdt_object *mnew = NULL; struct mdt_lock_handle *lh_srcdirp; struct mdt_lock_handle *lh_tgtdirp; struct mdt_lock_handle *lh_oldp; struct mdt_lock_handle *lh_newp; struct lu_fid *old_fid = &info->mti_tmp_fid1; struct lu_fid *new_fid = &info->mti_tmp_fid2; struct lustre_handle rename_lh = { 0 }; struct lu_name slname = { 0 }; struct lu_name *lname; int rc; ENTRY; if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); DEBUG_REQ(D_INODE, req, "rename "DFID"/%s to "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name, PFID(rr->rr_fid2), rr->rr_tgt); rc = mdt_rename_lock(info, &rename_lh); if (rc) { CERROR("Can't lock FS for rename, rc %d\n", rc); RETURN(rc); } lh_newp = &info->mti_lh[MDT_LH_NEW]; /* step 1: lock the source dir. */ lh_srcdirp = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lh_srcdirp, LCK_PW, rr->rr_name, rr->rr_namelen); msrcdir = mdt_object_find_lock(info, rr->rr_fid1, lh_srcdirp, MDS_INODELOCK_UPDATE); if (IS_ERR(msrcdir)) GOTO(out_rename_lock, rc = PTR_ERR(msrcdir)); if (mdt_object_obf(msrcdir)) GOTO(out_unlock_source, rc = -EPERM); rc = mdt_version_get_check_save(info, msrcdir, 0); if (rc) GOTO(out_unlock_source, rc); /* step 2: find & lock the target dir. */ lh_tgtdirp = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_pdo_init(lh_tgtdirp, LCK_PW, rr->rr_tgt, rr->rr_tgtlen); if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) { mdt_object_get(info->mti_env, msrcdir); mtgtdir = msrcdir; if (lh_tgtdirp->mlh_pdo_hash != lh_srcdirp->mlh_pdo_hash) { rc = mdt_pdir_hash_lock(info, lh_tgtdirp, mtgtdir, MDS_INODELOCK_UPDATE); if (rc) GOTO(out_unlock_source, rc); OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK2, 10); } } else { mtgtdir = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2); if (IS_ERR(mtgtdir)) GOTO(out_unlock_source, rc = PTR_ERR(mtgtdir)); if (mdt_object_obf(mtgtdir)) GOTO(out_put_target, rc = -EPERM); /* check early, the real version will be saved after locking */ rc = mdt_version_get_check(info, mtgtdir, 1); if (rc) GOTO(out_put_target, rc); if (unlikely(mdt_object_remote(mtgtdir))) { CDEBUG(D_INFO, "Source dir "DFID" target dir "DFID "on different MDTs\n", PFID(rr->rr_fid1), PFID(rr->rr_fid2)); GOTO(out_put_target, rc = -EXDEV); } else { if (likely(mdt_object_exists(mtgtdir))) { /* we lock the target dir if it is local */ rc = mdt_object_lock(info, mtgtdir, lh_tgtdirp, MDS_INODELOCK_UPDATE, MDT_LOCAL_LOCK); if (rc != 0) GOTO(out_put_target, rc); /* get and save correct version after locking */ mdt_version_get_save(info, mtgtdir, 1); } else { GOTO(out_put_target, rc = -ESTALE); } } } /* step 3: find & lock the old object. */ lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); mdt_name_copy(&slname, lname); fid_zero(old_fid); rc = mdt_lookup_version_check(info, msrcdir, &slname, old_fid, 2); if (rc != 0) GOTO(out_unlock_target, rc); if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2)) GOTO(out_unlock_target, rc = -EINVAL); mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid); if (IS_ERR(mold)) GOTO(out_unlock_target, rc = PTR_ERR(mold)); if (mdt_object_remote(mold)) { mdt_object_put(info->mti_env, mold); CDEBUG(D_INFO, "Source child "DFID" is on another MDT\n", PFID(old_fid)); GOTO(out_unlock_target, rc = -EXDEV); } if (mdt_object_obf(mold)) { mdt_object_put(info->mti_env, mold); GOTO(out_unlock_target, rc = -EPERM); } lh_oldp = &info->mti_lh[MDT_LH_OLD]; mdt_lock_reg_init(lh_oldp, LCK_EX); rc = mdt_object_lock(info, mold, lh_oldp, MDS_INODELOCK_LOOKUP, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mold); GOTO(out_unlock_target, rc); } info->mti_mos = mold; /* save version after locking */ mdt_version_get_save(info, mold, 2); mdt_set_capainfo(info, 2, old_fid, BYPASS_CAPA); /* step 4: find & lock the new object. */ /* new target object may not exist now */ lname = mdt_name(info->mti_env, (char *)rr->rr_tgt, rr->rr_tgtlen); /* lookup with version checking */ fid_zero(new_fid); rc = mdt_lookup_version_check(info, mtgtdir, lname, new_fid, 3); if (rc == 0) { /* the new_fid should have been filled at this moment */ if (lu_fid_eq(old_fid, new_fid)) GOTO(out_unlock_old, rc); if (lu_fid_eq(new_fid, rr->rr_fid1) || lu_fid_eq(new_fid, rr->rr_fid2)) GOTO(out_unlock_old, rc = -EINVAL); mdt_lock_reg_init(lh_newp, LCK_EX); mnew = mdt_object_find(info->mti_env, info->mti_mdt, new_fid); if (IS_ERR(mnew)) GOTO(out_unlock_old, rc = PTR_ERR(mnew)); if (mdt_object_obf(mnew)) { mdt_object_put(info->mti_env, mnew); GOTO(out_unlock_old, rc = -EPERM); } if (mdt_object_remote(mnew)) { mdt_object_put(info->mti_env, mnew); CDEBUG(D_INFO, "src child "DFID" is on another MDT\n", PFID(new_fid)); GOTO(out_unlock_old, rc = -EXDEV); } rc = mdt_object_lock(info, mnew, lh_newp, MDS_INODELOCK_FULL, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mnew); GOTO(out_unlock_old, rc); } /* get and save version after locking */ mdt_version_get_save(info, mnew, 3); mdt_set_capainfo(info, 3, new_fid, BYPASS_CAPA); } else if (rc != -EREMOTE && rc != -ENOENT) { GOTO(out_unlock_old, rc); } else { mdt_enoent_version_save(info, 3); } /* step 5: rename it */ mdt_reint_init_ma(info, ma); mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_RENAME_WRITE); /* Check if @dst is subdir of @src. */ rc = mdt_rename_sanity(info, old_fid); if (rc) GOTO(out_unlock_new, rc); rc = mdo_rename(info->mti_env, mdt_object_child(msrcdir), mdt_object_child(mtgtdir), old_fid, &slname, (mnew ? mdt_object_child(mnew) : NULL), lname, ma); /* handle last link of tgt object */ if (rc == 0) { mdt_counter_incr(req, LPROC_MDT_RENAME); if (mnew) mdt_handle_last_unlink(info, mnew, ma); mdt_rename_counter_tally(info, info->mti_mdt, req, msrcdir, mtgtdir); } EXIT; out_unlock_new: if (mnew) mdt_object_unlock_put(info, mnew, lh_newp, rc); out_unlock_old: mdt_object_unlock_put(info, mold, lh_oldp, rc); out_unlock_target: mdt_object_unlock(info, mtgtdir, lh_tgtdirp, rc); out_put_target: mdt_object_put(info->mti_env, mtgtdir); out_unlock_source: mdt_object_unlock_put(info, msrcdir, lh_srcdirp, rc); out_rename_lock: if (lustre_handle_is_used(&rename_lh)) mdt_rename_unlock(&rename_lh); return rc; }
int llog_origin_handle_cancel(struct ptlrpc_request *req) { struct obd_device *obd = req->rq_export->exp_obd; int num_cookies, rc = 0, err, i, failed = 0; struct obd_device *disk_obd; struct llog_cookie *logcookies; struct llog_ctxt *ctxt = NULL; struct lvfs_run_ctxt saved; struct llog_handle *cathandle; struct inode *inode; void *handle; ENTRY; logcookies = req_capsule_client_get(&req->rq_pill, &RMF_LOGCOOKIES); num_cookies = req_capsule_get_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_CLIENT) / sizeof(*logcookies); if (logcookies == NULL || num_cookies == 0) { DEBUG_REQ(D_HA, req, "No llog cookies sent"); RETURN(-EFAULT); } ctxt = llog_get_context(obd, logcookies->lgc_subsys); if (ctxt == NULL) RETURN(-ENODEV); disk_obd = ctxt->loc_exp->exp_obd; push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL); for (i = 0; i < num_cookies; i++, logcookies++) { cathandle = ctxt->loc_handle; LASSERT(cathandle != NULL); inode = cathandle->lgh_file->f_dentry->d_inode; handle = fsfilt_start_log(disk_obd, inode, FSFILT_OP_CANCEL_UNLINK, NULL, 1); if (IS_ERR(handle)) { CERROR("fsfilt_start_log() failed: %ld\n", PTR_ERR(handle)); GOTO(pop_ctxt, rc = PTR_ERR(handle)); } rc = llog_cat_cancel_records(cathandle, 1, logcookies); /* * Do not raise -ENOENT errors for resent rpcs. This rec already * might be killed. */ if (rc == -ENOENT && (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT)) { /* * Do not change this message, reply-single.sh test_59b * expects to find this in log. */ CDEBUG(D_RPCTRACE, "RESENT cancel req %p - ignored\n", req); rc = 0; } else if (rc == 0) { CDEBUG(D_RPCTRACE, "Canceled %d llog-records\n", num_cookies); } err = fsfilt_commit(disk_obd, inode, handle, 0); if (err) { CERROR("Error committing transaction: %d\n", err); if (!rc) rc = err; failed++; GOTO(pop_ctxt, rc); } else if (rc) failed++; } GOTO(pop_ctxt, rc); pop_ctxt: pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL); if (rc) CERROR("Cancel %d of %d llog-records failed: %d\n", failed, num_cookies, rc); llog_ctxt_put(ctxt); return rc; }
/* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */ int mgs_handle(struct ptlrpc_request *req) { int fail = OBD_FAIL_MGS_ALL_REPLY_NET; int opc, rc = 0; ENTRY; req_capsule_init(&req->rq_pill, req, RCL_SERVER); CFS_FAIL_TIMEOUT_MS(OBD_FAIL_MGS_PAUSE_REQ, cfs_fail_val); if (CFS_FAIL_CHECK(OBD_FAIL_MGS_ALL_REQUEST_NET)) RETURN(0); LASSERT(current->journal_info == NULL); opc = lustre_msg_get_opc(req->rq_reqmsg); if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT || opc == SEC_CTX_FINI) GOTO(out, rc = 0); if (opc != MGS_CONNECT) { if (!class_connected_export(req->rq_export)) { DEBUG_REQ(D_MGS, req, "operation on unconnected MGS\n"); req->rq_status = -ENOTCONN; GOTO(out, rc = -ENOTCONN); } } switch (opc) { case MGS_CONNECT: DEBUG_REQ(D_MGS, req, "connect"); /* MGS and MDS have same request format for connect */ req_capsule_set(&req->rq_pill, &RQF_MDS_CONNECT); rc = target_handle_connect(req); if (rc == 0) rc = mgs_connect_check_sptlrpc(req); if (!rc && (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1)) /* Make clients trying to reconnect after a MGS restart happy; also requires obd_replayable */ lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT); break; case MGS_DISCONNECT: DEBUG_REQ(D_MGS, req, "disconnect"); /* MGS and MDS have same request format for disconnect */ req_capsule_set(&req->rq_pill, &RQF_MDS_DISCONNECT); rc = target_handle_disconnect(req); req->rq_status = rc; /* superfluous? */ break; case MGS_EXCEPTION: DEBUG_REQ(D_MGS, req, "exception"); rc = mgs_handle_exception(req); break; case MGS_TARGET_REG: DEBUG_REQ(D_MGS, req, "target add"); req_capsule_set(&req->rq_pill, &RQF_MGS_TARGET_REG); rc = mgs_handle_target_reg(req); break; case MGS_TARGET_DEL: DEBUG_REQ(D_MGS, req, "target del"); rc = mgs_handle_target_del(req); break; case MGS_SET_INFO: DEBUG_REQ(D_MGS, req, "set_info"); req_capsule_set(&req->rq_pill, &RQF_MGS_SET_INFO); rc = mgs_set_info_rpc(req); break; case MGS_CONFIG_READ: DEBUG_REQ(D_MGS, req, "read config"); req_capsule_set(&req->rq_pill, &RQF_MGS_CONFIG_READ); rc = mgs_config_read(req); break; case LDLM_ENQUEUE: DEBUG_REQ(D_MGS, req, "enqueue"); req_capsule_set(&req->rq_pill, &RQF_LDLM_ENQUEUE); rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast, ldlm_server_blocking_ast, NULL); break; case LDLM_BL_CALLBACK: case LDLM_CP_CALLBACK: DEBUG_REQ(D_MGS, req, "callback"); CERROR("callbacks should not happen on MGS\n"); LBUG(); break; case OBD_PING: DEBUG_REQ(D_INFO, req, "ping"); req_capsule_set(&req->rq_pill, &RQF_OBD_PING); rc = target_handle_ping(req); break; case OBD_LOG_CANCEL: DEBUG_REQ(D_MGS, req, "log cancel"); rc = -ENOTSUPP; /* la la la */ break; case LLOG_ORIGIN_HANDLE_CREATE: DEBUG_REQ(D_MGS, req, "llog_init"); req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_CREATE); rc = llog_origin_handle_create(req); if (rc == 0) (void)mgs_handle_fslog_hack(req); break; case LLOG_ORIGIN_HANDLE_NEXT_BLOCK: DEBUG_REQ(D_MGS, req, "llog next block"); req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK); rc = llog_origin_handle_next_block(req); break; case LLOG_ORIGIN_HANDLE_READ_HEADER: DEBUG_REQ(D_MGS, req, "llog read header"); req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER); rc = llog_origin_handle_read_header(req); break; case LLOG_ORIGIN_HANDLE_CLOSE: DEBUG_REQ(D_MGS, req, "llog close"); rc = llog_origin_handle_close(req); break; case LLOG_CATINFO: DEBUG_REQ(D_MGS, req, "llog catinfo"); req_capsule_set(&req->rq_pill, &RQF_LLOG_CATINFO); rc = llog_catinfo(req); break; default: req->rq_status = -ENOTSUPP; rc = ptlrpc_error(req); RETURN(rc); } LASSERT(current->journal_info == NULL); if (rc) CERROR("MGS handle cmd=%d rc=%d\n", opc, rc); out: target_send_reply(req, rc, fail); RETURN(0); }
/** * Send request \a request. * if \a noreply is set, don't expect any reply back and don't set up * reply buffers. * Returns 0 on success or error code. */ int ptl_send_rpc(struct ptlrpc_request *request, int noreply) { int rc; int rc2; int mpflag = 0; struct ptlrpc_connection *connection; lnet_handle_me_t reply_me_h; lnet_md_t reply_md; struct obd_device *obd = request->rq_import->imp_obd; if (OBD_FAIL_CHECK(OBD_FAIL_PTLRPC_DROP_RPC)) return 0; LASSERT(request->rq_type == PTL_RPC_MSG_REQUEST); LASSERT(request->rq_wait_ctx == 0); /* If this is a re-transmit, we're required to have disengaged * cleanly from the previous attempt */ LASSERT(!request->rq_receiving_reply); LASSERT(!((lustre_msg_get_flags(request->rq_reqmsg) & MSG_REPLAY) && (request->rq_import->imp_state == LUSTRE_IMP_FULL))); if (unlikely(obd != NULL && obd->obd_fail)) { CDEBUG(D_HA, "muting rpc for failed imp obd %s\n", obd->obd_name); /* this prevents us from waiting in ptlrpc_queue_wait */ spin_lock(&request->rq_lock); request->rq_err = 1; spin_unlock(&request->rq_lock); request->rq_status = -ENODEV; return -ENODEV; } connection = request->rq_import->imp_connection; lustre_msg_set_handle(request->rq_reqmsg, &request->rq_import->imp_remote_handle); lustre_msg_set_type(request->rq_reqmsg, PTL_RPC_MSG_REQUEST); lustre_msg_set_conn_cnt(request->rq_reqmsg, request->rq_import->imp_conn_cnt); lustre_msghdr_set_flags(request->rq_reqmsg, request->rq_import->imp_msghdr_flags); if (request->rq_resend) lustre_msg_add_flags(request->rq_reqmsg, MSG_RESENT); if (request->rq_memalloc) mpflag = cfs_memory_pressure_get_and_set(); rc = sptlrpc_cli_wrap_request(request); if (rc) goto out; /* bulk register should be done after wrap_request() */ if (request->rq_bulk != NULL) { rc = ptlrpc_register_bulk(request); if (rc != 0) goto out; } if (!noreply) { LASSERT(request->rq_replen != 0); if (request->rq_repbuf == NULL) { LASSERT(request->rq_repdata == NULL); LASSERT(request->rq_repmsg == NULL); rc = sptlrpc_cli_alloc_repbuf(request, request->rq_replen); if (rc) { /* this prevents us from looping in * ptlrpc_queue_wait */ spin_lock(&request->rq_lock); request->rq_err = 1; spin_unlock(&request->rq_lock); request->rq_status = rc; goto cleanup_bulk; } } else { request->rq_repdata = NULL; request->rq_repmsg = NULL; } rc = LNetMEAttach(request->rq_reply_portal,/*XXX FIXME bug 249*/ connection->c_peer, request->rq_xid, 0, LNET_UNLINK, LNET_INS_AFTER, &reply_me_h); if (rc != 0) { CERROR("LNetMEAttach failed: %d\n", rc); LASSERT(rc == -ENOMEM); rc = -ENOMEM; goto cleanup_bulk; } } spin_lock(&request->rq_lock); /* If the MD attach succeeds, there _will_ be a reply_in callback */ request->rq_receiving_reply = !noreply; request->rq_req_unlink = 1; /* We are responsible for unlinking the reply buffer */ request->rq_reply_unlink = !noreply; /* Clear any flags that may be present from previous sends. */ request->rq_replied = 0; request->rq_err = 0; request->rq_timedout = 0; request->rq_net_err = 0; request->rq_resend = 0; request->rq_restart = 0; request->rq_reply_truncate = 0; spin_unlock(&request->rq_lock); if (!noreply) { reply_md.start = request->rq_repbuf; reply_md.length = request->rq_repbuf_len; /* Allow multiple early replies */ reply_md.threshold = LNET_MD_THRESH_INF; /* Manage remote for early replies */ reply_md.options = PTLRPC_MD_OPTIONS | LNET_MD_OP_PUT | LNET_MD_MANAGE_REMOTE | LNET_MD_TRUNCATE; /* allow to make EOVERFLOW error */ reply_md.user_ptr = &request->rq_reply_cbid; reply_md.eq_handle = ptlrpc_eq_h; /* We must see the unlink callback to unset rq_reply_unlink, so we can't auto-unlink */ rc = LNetMDAttach(reply_me_h, reply_md, LNET_RETAIN, &request->rq_reply_md_h); if (rc != 0) { CERROR("LNetMDAttach failed: %d\n", rc); LASSERT(rc == -ENOMEM); spin_lock(&request->rq_lock); /* ...but the MD attach didn't succeed... */ request->rq_receiving_reply = 0; spin_unlock(&request->rq_lock); rc = -ENOMEM; goto cleanup_me; } CDEBUG(D_NET, "Setup reply buffer: %u bytes, xid %llu, portal %u\n", request->rq_repbuf_len, request->rq_xid, request->rq_reply_portal); } /* add references on request for request_out_callback */ ptlrpc_request_addref(request); if (obd != NULL && obd->obd_svc_stats != NULL) lprocfs_counter_add(obd->obd_svc_stats, PTLRPC_REQACTIVE_CNTR, atomic_read(&request->rq_import->imp_inflight)); OBD_FAIL_TIMEOUT(OBD_FAIL_PTLRPC_DELAY_SEND, request->rq_timeout + 5); ktime_get_real_ts64(&request->rq_arrival_time); request->rq_sent = ktime_get_real_seconds(); /* We give the server rq_timeout secs to process the req, and add the network latency for our local timeout. */ request->rq_deadline = request->rq_sent + request->rq_timeout + ptlrpc_at_get_net_latency(request); ptlrpc_pinger_sending_on_import(request->rq_import); DEBUG_REQ(D_INFO, request, "send flg=%x", lustre_msg_get_flags(request->rq_reqmsg)); rc = ptl_send_buf(&request->rq_req_md_h, request->rq_reqbuf, request->rq_reqdata_len, LNET_NOACK_REQ, &request->rq_req_cbid, connection, request->rq_request_portal, request->rq_xid, 0); if (rc == 0) goto out; ptlrpc_req_finished(request); if (noreply) goto out; cleanup_me: /* MEUnlink is safe; the PUT didn't even get off the ground, and * nobody apart from the PUT's target has the right nid+XID to * access the reply buffer. */ rc2 = LNetMEUnlink(reply_me_h); LASSERT(rc2 == 0); /* UNLINKED callback called synchronously */ LASSERT(!request->rq_receiving_reply); cleanup_bulk: /* We do sync unlink here as there was no real transfer here so * the chance to have long unlink to sluggish net is smaller here. */ ptlrpc_unregister_bulk(request, 0); out: if (request->rq_memalloc) cfs_memory_pressure_restore(mpflag); return rc; }
/* * VBR: we save three versions in reply: * 0 - parent. Check that parent version is the same during replay. * 1 - name. Version of 'name' if file exists with the same name or * ENOENT_VERSION, it is needed because file may appear due to missed replays. * 2 - child. Version of child by FID. Must be ENOENT. It is mostly sanity * check. */ static int mdt_md_create(struct mdt_thread_info *info) { struct mdt_device *mdt = info->mti_mdt; struct mdt_object *parent; struct mdt_object *child; struct mdt_lock_handle *lh; struct mdt_body *repbody; struct md_attr *ma = &info->mti_attr; struct mdt_reint_record *rr = &info->mti_rr; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, mdt_info_req(info), "Create (%s->"DFID") in "DFID, rr->rr_name, PFID(rr->rr_fid2), PFID(rr->rr_fid1)); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); lh = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lh, LCK_PW, rr->rr_name, rr->rr_namelen); parent = mdt_object_find_lock(info, rr->rr_fid1, lh, MDS_INODELOCK_UPDATE, MDT_OBJ_MUST_EXIST); if (IS_ERR(parent)) RETURN(PTR_ERR(parent)); rc = mdt_version_get_check_save(info, parent, 0); if (rc) GOTO(out_put_parent, rc); /* * Check child name version during replay. * During create replay a file may exist with same name. */ lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); rc = mdt_lookup_version_check(info, parent, lname, &info->mti_tmp_fid1, 1); /* -ENOENT is expected here */ if (rc != 0 && rc != -ENOENT) GOTO(out_put_parent, rc); /* save version of file name for replay, it must be ENOENT here */ mdt_enoent_version_save(info, 1); child = mdt_object_find(info->mti_env, mdt, rr->rr_fid2, MDT_OBJ_MAY_NOT_EXIST); if (likely(!IS_ERR(child))) { struct md_object *next = mdt_object_child(parent); ma->ma_need = MA_INODE; ma->ma_valid = 0; /* capa for cross-ref will be stored here */ ma->ma_capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1); LASSERT(ma->ma_capa); mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_CREATE_WRITE); /* Version of child will be updated on disk. */ info->mti_mos = child; rc = mdt_version_get_check_save(info, child, 2); if (rc) GOTO(out_put_child, rc); /* Let lower layer know current lock mode. */ info->mti_spec.sp_cr_mode = mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode); /* * Do perform lookup sanity check. We do not know if name exists * or not. */ info->mti_spec.sp_cr_lookup = 1; info->mti_spec.sp_feat = &dt_directory_features; rc = mdo_create(info->mti_env, next, lname, mdt_object_child(child), &info->mti_spec, ma); if (rc == 0) { /* Return fid & attr to client. */ if (ma->ma_valid & MA_INODE) mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(child)); } out_put_child: mdt_object_put(info->mti_env, child); } else { rc = PTR_ERR(child); } mdt_create_pack_capa(info, rc, child, repbody); out_put_parent: mdt_object_unlock_put(info, parent, lh, rc); RETURN(rc); }