/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * 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 2008 Sun Microsystems, Inc. All rights reserved * Use is subject to license terms. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/ost/ost_handler.c * * Author: Peter J. Braam * Author: Phil Schwan */ #ifndef EXPORT_SYMTAB # define EXPORT_SYMTAB #endif #define DEBUG_SUBSYSTEM S_OST #include #include #include #include #include #include #include #include #include #include #include #include "ost_internal.h" static int oss_num_threads; CFS_MODULE_PARM(oss_num_threads, "i", int, 0444, "number of OSS service threads to start"); static int ost_num_threads; CFS_MODULE_PARM(ost_num_threads, "i", int, 0444, "number of OST service threads to start (deprecated)"); static int oss_num_create_threads; CFS_MODULE_PARM(oss_num_create_threads, "i", int, 0444, "number of OSS create threads to start"); /** * Do not return server-side uid/gid to remote client */ static void ost_drop_id(struct obd_export *exp, struct obdo *oa) { if (exp_connect_rmtclient(exp)) { oa->o_uid = -1; oa->o_gid = -1; oa->o_valid &= ~(OBD_MD_FLUID | OBD_MD_FLGID); } } void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req) { struct oti_req_ack_lock *ack_lock; int i; if (oti == NULL) return; if (req->rq_repmsg) lustre_msg_set_transno(req->rq_repmsg, oti->oti_transno); req->rq_transno = oti->oti_transno; /* XXX 4 == entries in oti_ack_locks??? */ for (ack_lock = oti->oti_ack_locks, i = 0; i < 4; i++, ack_lock++) { if (!ack_lock->mode) break; /* XXX not even calling target_send_reply in some cases... */ ptlrpc_save_lock (req, &ack_lock->lock, ack_lock->mode, 0); } } static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req, struct obd_trans_info *oti) { struct ost_body *body, *repbody; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) }; struct lustre_capa *capa = NULL; int rc; ENTRY; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_ost_body); if (body == NULL) RETURN(-EFAULT); if (body->oa.o_id == 0) RETURN(-EPROTO); if (lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1)) { struct ldlm_request *dlm; dlm = lustre_swab_reqbuf(req, REQ_REC_OFF + 1, sizeof(*dlm), lustre_swab_ldlm_request); if (dlm == NULL) RETURN (-EFAULT); ldlm_request_cancel(req, dlm, 0); } if (body->oa.o_valid & OBD_MD_FLOSSCAPA) capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 2); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); if (body->oa.o_valid & OBD_MD_FLCOOKIE) oti->oti_logcookies = &body->oa.o_lcookie; repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); memcpy(&repbody->oa, &body->oa, sizeof(body->oa)); req->rq_status = obd_destroy(exp, &body->oa, NULL, oti, NULL, capa); RETURN(0); } static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req) { struct ost_body *body, *repbody; struct obd_info oinfo = { { { 0 } } }; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) }; int rc; ENTRY; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_ost_body); if (body == NULL) RETURN(-EFAULT); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); repbody->oa = body->oa; oinfo.oi_oa = &repbody->oa; if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA) oinfo.oi_capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 1); req->rq_status = obd_getattr(exp, &oinfo); ost_drop_id(exp, &repbody->oa); RETURN(0); } static int ost_statfs(struct ptlrpc_request *req) { struct obd_statfs *osfs; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*osfs) }; int rc; ENTRY; rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); osfs = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*osfs)); req->rq_status = obd_statfs(req->rq_export->exp_obd, osfs, cfs_time_current_64() - HZ, 0); if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC)) osfs->os_bfree = osfs->os_bavail = 64; if (req->rq_status != 0) CERROR("ost: statfs failed: rc %d\n", req->rq_status); RETURN(0); } static int ost_create(struct obd_export *exp, struct ptlrpc_request *req, struct obd_trans_info *oti) { struct ost_body *body, *repbody; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) }; int rc; ENTRY; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_ost_body); if (body == NULL) RETURN(-EFAULT); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); memcpy(&repbody->oa, &body->oa, sizeof(body->oa)); oti->oti_logcookies = &repbody->oa.o_lcookie; req->rq_status = obd_create(exp, &repbody->oa, NULL, oti); //obd_log_cancel(conn, NULL, 1, oti->oti_logcookies, 0); RETURN(0); } /* * Helper function for ost_punch(): if asked by client, acquire [size, EOF] * lock on the file being truncated. */ static int ost_punch_lock_get(struct obd_export *exp, struct obdo *oa, struct lustre_handle *lh) { int flags; struct ldlm_res_id res_id; ldlm_policy_data_t policy; __u64 start; __u64 finis; ENTRY; osc_build_res_name(oa->o_id, oa->o_gr, &res_id); LASSERT(!lustre_handle_is_used(lh)); if (!(oa->o_valid & OBD_MD_FLFLAGS) || !(oa->o_flags & OBD_FL_TRUNCLOCK)) RETURN(0); CDEBUG(D_INODE, "OST-side truncate lock.\n"); start = oa->o_size; finis = start + oa->o_blocks; /* * standard truncate optimization: if file body is completely * destroyed, don't send data back to the server. */ flags = (start == 0) ? LDLM_AST_DISCARD_DATA : 0; policy.l_extent.start = start & CFS_PAGE_MASK; /* * If ->o_blocks is EOF it means "lock till the end of the * file". Otherwise, it's size of a hole being punched (in bytes) */ if (oa->o_blocks == OBD_OBJECT_EOF || finis < start) policy.l_extent.end = OBD_OBJECT_EOF; else policy.l_extent.end = finis | ~CFS_PAGE_MASK; RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id, LDLM_EXTENT, &policy, LCK_PW, &flags, ldlm_blocking_ast, ldlm_completion_ast, ldlm_glimpse_ast, NULL, 0, NULL, NULL, lh)); } /* * Helper function for ost_punch(): release lock acquired by * ost_punch_lock_get(), if any. */ static void ost_punch_lock_put(struct obd_export *exp, struct obdo *oa, struct lustre_handle *lh) { ENTRY; if (lustre_handle_is_used(lh)) ldlm_lock_decref(lh, LCK_PW); EXIT; } static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req, struct obd_trans_info *oti) { struct obd_info oinfo = { { { 0 } } }; struct ost_body *body, *repbody; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) }; int rc; struct lustre_handle lh = {0,}; ENTRY; /* check that we do support OBD_CONNECT_TRUNCLOCK. */ CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK); /* ost_body is varified and swabbed in ost_hpreq_handler() */ body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body)); LASSERT(body != NULL); oinfo.oi_oa = &body->oa; oinfo.oi_policy.l_extent.start = oinfo.oi_oa->o_size; oinfo.oi_policy.l_extent.end = oinfo.oi_oa->o_blocks; if ((oinfo.oi_oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) != (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) RETURN(-EPROTO); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); rc = ost_punch_lock_get(exp, oinfo.oi_oa, &lh); if (rc == 0) { if (oinfo.oi_oa->o_valid & OBD_MD_FLFLAGS && oinfo.oi_oa->o_flags == OBD_FL_TRUNCLOCK) /* * If OBD_FL_TRUNCLOCK is the only bit set in * ->o_flags, clear OBD_MD_FLFLAGS to avoid falling * through filter_setattr() to filter_iocontrol(). */ oinfo.oi_oa->o_valid &= ~OBD_MD_FLFLAGS; if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA) oinfo.oi_capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 1); req->rq_status = obd_punch(exp, &oinfo, oti, NULL); ost_punch_lock_put(exp, oinfo.oi_oa, &lh); } repbody->oa = *oinfo.oi_oa; ost_drop_id(exp, &repbody->oa); RETURN(rc); } static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req) { struct ost_body *body, *repbody; struct lustre_capa *capa = NULL; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) }; int rc; ENTRY; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_ost_body); if (body == NULL) RETURN(-EFAULT); if (body->oa.o_valid & OBD_MD_FLOSSCAPA) capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 1); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); memcpy(&repbody->oa, &body->oa, sizeof(body->oa)); req->rq_status = obd_sync(exp, &repbody->oa, NULL, repbody->oa.o_size, repbody->oa.o_blocks, capa); ost_drop_id(exp, &repbody->oa); RETURN(0); } static int ost_setattr(struct obd_export *exp, struct ptlrpc_request *req, struct obd_trans_info *oti) { struct ost_body *body, *repbody; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) }; int rc; struct obd_info oinfo = { { { 0 } } }; ENTRY; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_ost_body); if (body == NULL) RETURN(-EFAULT); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); repbody->oa = body->oa; oinfo.oi_oa = &repbody->oa; if (oinfo.oi_oa->o_valid & OBD_MD_FLOSSCAPA) oinfo.oi_capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 1); req->rq_status = obd_setattr(exp, &oinfo, oti); ost_drop_id(exp, &repbody->oa); RETURN(0); } static int ost_bulk_timeout(void *data) { ENTRY; /* We don't fail the connection here, because having the export * killed makes the (vital) call to commitrw very sad. */ RETURN(1); } static __u32 ost_checksum_bulk(struct ptlrpc_bulk_desc *desc, int opc, cksum_type_t cksum_type) { __u32 cksum; int i; cksum = init_checksum(cksum_type); for (i = 0; i < desc->bd_iov_count; i++) { struct page *page = desc->bd_iov[i].kiov_page; int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK; char *ptr = kmap(page) + off; int len = desc->bd_iov[i].kiov_len; /* corrupt the data before we compute the checksum, to * simulate a client->OST data error */ if (i == 0 && opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) memcpy(ptr, "bad3", min(4, len)); cksum = compute_checksum(cksum, ptr, len, cksum_type); /* corrupt the data after we compute the checksum, to * simulate an OST->client data error */ if (i == 0 && opc == OST_READ && OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) { memcpy(ptr, "bad4", min(4, len)); /* nobody should use corrupted page again */ ClearPageUptodate(page); } kunmap(page); } return cksum; } static int ost_brw_lock_get(int mode, struct obd_export *exp, struct obd_ioobj *obj, struct niobuf_remote *nb, struct lustre_handle *lh) { int flags = 0; int nrbufs = obj->ioo_bufcnt; struct ldlm_res_id res_id; ldlm_policy_data_t policy; int i; ENTRY; osc_build_res_name(obj->ioo_id, obj->ioo_gr, &res_id); LASSERT(mode == LCK_PR || mode == LCK_PW); LASSERT(!lustre_handle_is_used(lh)); if (nrbufs == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK)) RETURN(0); /* EXPENSIVE ASSERTION */ for (i = 1; i < nrbufs; i ++) LASSERT((nb[0].flags & OBD_BRW_SRVLOCK) == (nb[i].flags & OBD_BRW_SRVLOCK)); policy.l_extent.start = nb[0].offset & CFS_PAGE_MASK; policy.l_extent.end = (nb[nrbufs - 1].offset + nb[nrbufs - 1].len - 1) | ~CFS_PAGE_MASK; RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id, LDLM_EXTENT, &policy, mode, &flags, ldlm_blocking_ast, ldlm_completion_ast, ldlm_glimpse_ast, NULL, 0, NULL, NULL, lh)); } static void ost_brw_lock_put(int mode, struct obd_ioobj *obj, struct niobuf_remote *niob, struct lustre_handle *lh) { ENTRY; LASSERT(mode == LCK_PR || mode == LCK_PW); LASSERT((obj->ioo_bufcnt > 0 && (niob[0].flags & OBD_BRW_SRVLOCK)) == lustre_handle_is_used(lh)); if (lustre_handle_is_used(lh)) ldlm_lock_decref(lh, mode); EXIT; } struct ost_prolong_data { struct obd_export *opd_exp; ldlm_policy_data_t opd_policy; struct obdo *opd_oa; ldlm_mode_t opd_mode; int opd_lock_match; int opd_timeout; }; static int ost_prolong_locks_iter(struct ldlm_lock *lock, void *data) { struct ost_prolong_data *opd = data; LASSERT(lock->l_resource->lr_type == LDLM_EXTENT); if (lock->l_req_mode != lock->l_granted_mode) { /* scan granted locks only */ return LDLM_ITER_STOP; } if (lock->l_export != opd->opd_exp) { /* prolong locks only for given client */ return LDLM_ITER_CONTINUE; } if (!(lock->l_granted_mode & opd->opd_mode)) { /* we aren't interesting in all type of locks */ return LDLM_ITER_CONTINUE; } if (lock->l_policy_data.l_extent.end < opd->opd_policy.l_extent.start || lock->l_policy_data.l_extent.start > opd->opd_policy.l_extent.end) { /* the request doesn't cross the lock, skip it */ return LDLM_ITER_CONTINUE; } /* Fill the obdo with the matched lock handle. * XXX: it is possible in some cases the IO RPC is covered by several * locks, even for the write case, so it may need to be a lock list. */ if (opd->opd_oa && !(opd->opd_oa->o_valid & OBD_MD_FLHANDLE)) { opd->opd_oa->o_handle.cookie = lock->l_handle.h_cookie; opd->opd_oa->o_valid |= OBD_MD_FLHANDLE; } if (!(lock->l_flags & LDLM_FL_AST_SENT)) { /* ignore locks not being cancelled */ return LDLM_ITER_CONTINUE; } CDEBUG(D_DLMTRACE,"refresh lock: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n", lock->l_resource->lr_name.name[0], lock->l_resource->lr_name.name[1], opd->opd_policy.l_extent.start, opd->opd_policy.l_extent.end); /* OK. this is a possible lock the user holds doing I/O * let's refresh eviction timer for it */ ldlm_refresh_waiting_lock(lock, opd->opd_timeout); opd->opd_lock_match = 1; return LDLM_ITER_CONTINUE; } static int ost_rw_prolong_locks(struct ptlrpc_request *req, struct obd_ioobj *obj, struct niobuf_remote *nb, struct obdo *oa, ldlm_mode_t mode) { struct ldlm_res_id res_id; int nrbufs = obj->ioo_bufcnt; struct ost_prolong_data opd = { 0 }; ENTRY; osc_build_res_name(obj->ioo_id, obj->ioo_gr, &res_id); opd.opd_mode = mode; opd.opd_exp = req->rq_export; opd.opd_policy.l_extent.start = nb[0].offset & CFS_PAGE_MASK; opd.opd_policy.l_extent.end = (nb[nrbufs - 1].offset + nb[nrbufs - 1].len - 1) | ~CFS_PAGE_MASK; /* prolong locks for the current service time of the corresponding * portal (= OST_IO_PORTAL) */ opd.opd_timeout = AT_OFF ? obd_timeout / 2: max(at_est2timeout(at_get(&req->rq_rqbd-> rqbd_service->srv_at_estimate)), ldlm_timeout); CDEBUG(D_INFO,"refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n", res_id.name[0], res_id.name[1], opd.opd_policy.l_extent.start, opd.opd_policy.l_extent.end); if (oa->o_valid & OBD_MD_FLHANDLE) { struct ldlm_lock *lock; lock = ldlm_handle2lock(&oa->o_handle); if (lock != NULL) { ost_prolong_locks_iter(lock, &opd); if (opd.opd_lock_match) { LDLM_LOCK_PUT(lock); RETURN(1); } /* Check if the lock covers the whole IO region, * otherwise iterate through the resource. */ if (lock->l_policy_data.l_extent.end >= opd.opd_policy.l_extent.end && lock->l_policy_data.l_extent.start <= opd.opd_policy.l_extent.start) { LDLM_LOCK_PUT(lock); RETURN(0); } LDLM_LOCK_PUT(lock); } } opd.opd_oa = oa; ldlm_resource_iterate(req->rq_export->exp_obd->obd_namespace, &res_id, ost_prolong_locks_iter, &opd); RETURN(opd.opd_lock_match); } static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti) { struct ptlrpc_bulk_desc *desc = NULL; struct obd_export *exp = req->rq_export; struct niobuf_remote *remote_nb; struct niobuf_local *local_nb; struct obd_ioobj *ioo; struct ost_body *body, *repbody; struct lustre_capa *capa = NULL; struct l_wait_info lwi; struct lustre_handle lockh = { 0 }; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) }; int niocount, npages, nob = 0, rc, i; int no_reply = 0; ENTRY; req->rq_bulk_read = 1; if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK)) GOTO(out, rc = -EIO); OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, (obd_timeout + 1) / 4); /* Check if there is eviction in progress, and if so, wait for it to * finish */ if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) { lwi = LWI_INTR(NULL, NULL); // We do not care how long it takes rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq, !atomic_read(&exp->exp_obd->obd_evict_inprogress), &lwi); } if (exp->exp_failed) GOTO(out, rc = -ENOTCONN); /* ost_body, ioobj & noibuf_remote are verified and swabbed in * ost_rw_hpreq_check(). */ body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body)); LASSERT(body != NULL); ioo = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, sizeof(*ioo)); LASSERT(ioo != NULL); niocount = ioo->ioo_bufcnt; remote_nb = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, niocount * sizeof(*remote_nb)); LASSERT(remote_nb != NULL); if (body->oa.o_valid & OBD_MD_FLOSSCAPA) capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 3); rc = lustre_pack_reply(req, 2, size, NULL); if (rc) GOTO(out, rc); /* * Per-thread array of struct niobuf_{local,remote}'s was allocated by * ost_thread_init(). */ local_nb = ost_tls(req)->local; rc = ost_brw_lock_get(LCK_PR, exp, ioo, remote_nb, &lockh); if (rc != 0) GOTO(out_bulk, rc); /* * If getting the lock took more time than * client was willing to wait, drop it. b=11330 */ if (cfs_time_current_sec() > req->rq_deadline || OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) { no_reply = 1; CERROR("Dropping timed-out read from %s because locking" "object "LPX64" took %ld seconds (limit was %ld).\n", libcfs_id2str(req->rq_peer), ioo->ioo_id, cfs_time_current_sec() - req->rq_arrival_time.tv_sec, req->rq_deadline - req->rq_arrival_time.tv_sec); GOTO(out_lock, rc = -ETIMEDOUT); } npages = OST_THREAD_POOL_SIZE; rc = obd_preprw(OBD_BRW_READ, exp, &body->oa, 1, ioo, remote_nb, &npages, local_nb, oti, capa); if (rc != 0) GOTO(out_lock, rc); desc = ptlrpc_prep_bulk_exp(req, npages, BULK_PUT_SOURCE, OST_BULK_PORTAL); if (desc == NULL) /* XXX: check all cleanup stuff */ GOTO(out, rc = -ENOMEM); ost_rw_prolong_locks(req, ioo, remote_nb, &body->oa, LCK_PW | LCK_PR); nob = 0; for (i = 0; i < npages; i++) { int page_rc = local_nb[i].rc; if (page_rc < 0) { /* error */ rc = page_rc; break; } nob += page_rc; if (page_rc != 0) { /* some data! */ LASSERT (local_nb[i].page != NULL); ptlrpc_prep_bulk_page(desc, local_nb[i].page, local_nb[i].offset & ~CFS_PAGE_MASK, page_rc); } if (page_rc != local_nb[i].len) { /* short read */ /* All subsequent pages should be 0 */ while(++i < npages) LASSERT(local_nb[i].rc == 0); break; } } if (body->oa.o_valid & OBD_MD_FLCKSUM) { cksum_type_t cksum_type = OBD_CKSUM_CRC32; if (body->oa.o_valid & OBD_MD_FLFLAGS) cksum_type = cksum_type_unpack(body->oa.o_flags); body->oa.o_flags = cksum_type_pack(cksum_type); body->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; body->oa.o_cksum = ost_checksum_bulk(desc, OST_READ, cksum_type); CDEBUG(D_PAGE,"checksum at read origin: %x\n",body->oa.o_cksum); } else { body->oa.o_valid = 0; } /* We're finishing using body->oa as an input variable */ /* Check if client was evicted while we were doing i/o before touching network */ if (rc == 0) { /* Check if there is eviction in progress, and if so, wait for * it to finish */ if (unlikely(atomic_read(&exp->exp_obd-> obd_evict_inprogress))) { lwi = LWI_INTR(NULL, NULL); rc = l_wait_event(exp->exp_obd-> obd_evict_inprogress_waitq, !atomic_read(&exp->exp_obd-> obd_evict_inprogress), &lwi); } if (exp->exp_failed) rc = -ENOTCONN; else { rc = sptlrpc_svc_wrap_bulk(req, desc); if (rc == 0) rc = ptlrpc_start_bulk_transfer(desc); } if (rc == 0) { time_t start = cfs_time_current_sec(); do { long timeoutl = req->rq_deadline - cfs_time_current_sec(); cfs_duration_t timeout = (timeoutl <= 0 || rc) ? CFS_TICK : cfs_time_seconds(timeoutl); lwi = LWI_TIMEOUT_INTERVAL(timeout, cfs_time_seconds(1), ost_bulk_timeout, desc); rc = l_wait_event(desc->bd_waitq, !ptlrpc_server_bulk_active(desc) || exp->exp_failed, &lwi); LASSERT(rc == 0 || rc == -ETIMEDOUT); /* Wait again if we changed deadline */ } while ((rc == -ETIMEDOUT) && (req->rq_deadline > cfs_time_current_sec())); if (rc == -ETIMEDOUT) { DEBUG_REQ(D_ERROR, req, "timeout on bulk PUT after %ld%+lds", req->rq_deadline - start, cfs_time_current_sec() - req->rq_deadline); ptlrpc_abort_bulk(desc); } else if (exp->exp_failed) { DEBUG_REQ(D_ERROR, req, "Eviction on bulk PUT"); rc = -ENOTCONN; ptlrpc_abort_bulk(desc); } else if (!desc->bd_success || desc->bd_nob_transferred != desc->bd_nob) { DEBUG_REQ(D_ERROR, req, "%s bulk PUT %d(%d)", desc->bd_success ? "truncated" : "network error on", desc->bd_nob_transferred, desc->bd_nob); /* XXX should this be a different errno? */ rc = -ETIMEDOUT; } } else { DEBUG_REQ(D_ERROR, req, "bulk PUT failed: rc %d", rc); } no_reply = rc != 0; } /* Must commit after prep above in all cases */ rc = obd_commitrw(OBD_BRW_READ, exp, &body->oa, 1, ioo, remote_nb, npages, local_nb, oti, rc); if (rc == 0) { repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa)); ost_drop_id(exp, &repbody->oa); } out_lock: ost_brw_lock_put(LCK_PR, ioo, remote_nb, &lockh); out_bulk: if (desc) ptlrpc_free_bulk(desc); out: LASSERT(rc <= 0); if (rc == 0) { req->rq_status = nob; ptlrpc_lprocfs_brw(req, nob); target_committed_to_req(req); ptlrpc_reply(req); } else if (!no_reply) { /* Only reply if there was no comms problem with bulk */ target_committed_to_req(req); req->rq_status = rc; ptlrpc_error(req); } else { /* reply out callback would free */ ptlrpc_req_drop_rs(req); CWARN("%s: ignoring bulk IO comm error with %s@%s id %s - " "client will retry\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp->exp_connection->c_remote_uuid.uuid, libcfs_id2str(req->rq_peer)); } RETURN(rc); } static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti) { struct ptlrpc_bulk_desc *desc = NULL; struct obd_export *exp = req->rq_export; struct niobuf_remote *remote_nb; struct niobuf_local *local_nb; struct obd_ioobj *ioo; struct ost_body *body, *repbody; struct l_wait_info lwi; struct lustre_handle lockh = {0}; struct lustre_capa *capa = NULL; __u32 *rcs; __u32 size[3] = { sizeof(struct ptlrpc_body), sizeof(*body) }; int objcount, niocount, npages; int rc, i, j; obd_count client_cksum = 0, server_cksum = 0; cksum_type_t cksum_type = OBD_CKSUM_CRC32; int no_reply = 0; __u32 o_uid = 0, o_gid = 0; ENTRY; req->rq_bulk_write = 1; if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK)) GOTO(out, rc = -EIO); if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2)) GOTO(out, rc = -EFAULT); /* pause before transaction has been started */ OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, (obd_timeout + 1) / 4); /* Check if there is eviction in progress, and if so, wait for it to * finish */ if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) { lwi = LWI_INTR(NULL, NULL); // We do not care how long it takes rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq, !atomic_read(&exp->exp_obd->obd_evict_inprogress), &lwi); } if (exp->exp_failed) GOTO(out, rc = -ENOTCONN); /* ost_body, ioobj & noibuf_remote are verified and swabbed in * ost_rw_hpreq_check(). */ body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body)); LASSERT(body != NULL); objcount = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1) / sizeof(*ioo); ioo = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, objcount * sizeof(*ioo)); LASSERT(ioo != NULL); for (niocount = i = 0; i < objcount; i++) niocount += ioo[i].ioo_bufcnt; remote_nb = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, niocount * sizeof(*remote_nb)); LASSERT(remote_nb != NULL); if (body->oa.o_valid & OBD_MD_FLOSSCAPA) capa = lustre_unpack_capa(req->rq_reqmsg, REQ_REC_OFF + 3); size[REPLY_REC_OFF + 1] = niocount * sizeof(*rcs); rc = lustre_pack_reply(req, 3, size, NULL); if (rc != 0) GOTO(out, rc); OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, obd_fail_val); rcs = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1, niocount * sizeof(*rcs)); /* * Per-thread array of struct niobuf_{local,remote}'s was allocated by * ost_thread_init(). */ local_nb = ost_tls(req)->local; rc = ost_brw_lock_get(LCK_PW, exp, ioo, remote_nb, &lockh); if (rc != 0) GOTO(out_bulk, rc); /* * If getting the lock took more time than * client was willing to wait, drop it. b=11330 */ if (cfs_time_current_sec() > req->rq_deadline || OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) { no_reply = 1; CERROR("Dropping timed-out write from %s because locking " "object "LPX64" took %ld seconds (limit was %ld).\n", libcfs_id2str(req->rq_peer), ioo->ioo_id, cfs_time_current_sec() - req->rq_arrival_time.tv_sec, req->rq_deadline - req->rq_arrival_time.tv_sec); GOTO(out_lock, rc = -ETIMEDOUT); } ost_rw_prolong_locks(req, ioo, remote_nb,&body->oa, LCK_PW); /* obd_preprw clobbers oa->valid, so save what we need */ if (body->oa.o_valid & OBD_MD_FLCKSUM) { client_cksum = body->oa.o_cksum; if (body->oa.o_valid & OBD_MD_FLFLAGS) cksum_type = cksum_type_unpack(body->oa.o_flags); } /* Because we already sync grant info with client when reconnect, * grant info will be cleared for resent req, then fed_grant and * total_grant will not be modified in following preprw_write */ if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) { DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info"); body->oa.o_valid &= ~OBD_MD_FLGRANT; } if (exp_connect_rmtclient(exp)) { o_uid = body->oa.o_uid; o_gid = body->oa.o_gid; } npages = OST_THREAD_POOL_SIZE; rc = obd_preprw(OBD_BRW_WRITE, exp, &body->oa, objcount, ioo, remote_nb, &npages, local_nb, oti, capa); if (rc != 0) GOTO(out_lock, rc); desc = ptlrpc_prep_bulk_exp(req, npages, BULK_GET_SINK, OST_BULK_PORTAL); if (desc == NULL) GOTO(out, rc = -ENOMEM); /* NB Having prepped, we must commit... */ for (i = 0; i < npages; i++) ptlrpc_prep_bulk_page(desc, local_nb[i].page, local_nb[i].offset & ~CFS_PAGE_MASK, local_nb[i].len); rc = sptlrpc_svc_prep_bulk(req, desc); if (rc != 0) GOTO(out_lock, rc); /* Check if client was evicted while we were doing i/o before touching network */ if (desc->bd_export->exp_failed) rc = -ENOTCONN; else rc = ptlrpc_start_bulk_transfer(desc); if (rc == 0) { time_t start = cfs_time_current_sec(); do { long timeoutl = req->rq_deadline - cfs_time_current_sec(); cfs_duration_t timeout = (timeoutl <= 0 || rc) ? CFS_TICK : cfs_time_seconds(timeoutl); lwi = LWI_TIMEOUT_INTERVAL(timeout, cfs_time_seconds(1), ost_bulk_timeout, desc); rc = l_wait_event(desc->bd_waitq, !ptlrpc_server_bulk_active(desc) || desc->bd_export->exp_failed, &lwi); LASSERT(rc == 0 || rc == -ETIMEDOUT); /* Wait again if we changed deadline */ } while ((rc == -ETIMEDOUT) && (req->rq_deadline > cfs_time_current_sec())); if (rc == -ETIMEDOUT) { DEBUG_REQ(D_ERROR, req, "timeout on bulk GET after %ld%+lds", req->rq_deadline - start, cfs_time_current_sec() - req->rq_deadline); ptlrpc_abort_bulk(desc); } else if (desc->bd_export->exp_failed) { DEBUG_REQ(D_ERROR, req, "Eviction on bulk GET"); rc = -ENOTCONN; ptlrpc_abort_bulk(desc); } else if (!desc->bd_success) { DEBUG_REQ(D_ERROR, req, "network error on bulk GET"); /* XXX should this be a different errno? */ rc = -ETIMEDOUT; } else { rc = sptlrpc_svc_unwrap_bulk(req, desc); } } else { DEBUG_REQ(D_ERROR, req, "ptlrpc_bulk_get failed: rc %d", rc); } no_reply = rc != 0; repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa)); if (unlikely(client_cksum != 0 && rc == 0)) { static int cksum_counter; repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS; repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL; repbody->oa.o_flags |= cksum_type_pack(cksum_type); server_cksum = ost_checksum_bulk(desc, OST_WRITE, cksum_type); repbody->oa.o_cksum = server_cksum; cksum_counter++; if (unlikely(client_cksum != server_cksum)) { CERROR("client csum %x, server csum %x\n", client_cksum, server_cksum); cksum_counter = 0; } else if ((cksum_counter & (-cksum_counter)) == cksum_counter){ CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n", cksum_counter, libcfs_id2str(req->rq_peer), server_cksum); } } /* Must commit after prep above in all cases */ rc = obd_commitrw(OBD_BRW_WRITE, exp, &repbody->oa, objcount, ioo, remote_nb, npages, local_nb, oti, rc); if (exp_connect_rmtclient(exp)) { repbody->oa.o_uid = o_uid; repbody->oa.o_gid = o_gid; } if (unlikely(client_cksum != server_cksum && rc == 0)) { int new_cksum = ost_checksum_bulk(desc, OST_WRITE, cksum_type); char *msg; char *via; char *router; if (new_cksum == server_cksum) msg = "changed in transit before arrival at OST"; else if (new_cksum == client_cksum) msg = "initial checksum before message complete"; else msg = "changed in transit AND after initial checksum"; if (req->rq_peer.nid == desc->bd_sender) { via = router = ""; } else { via = " via "; router = libcfs_nid2str(desc->bd_sender); } LCONSOLE_ERROR_MSG(0x168, "%s: BAD WRITE CHECKSUM: %s from " "%s%s%s inum "LPU64"/"LPU64" object " LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n", exp->exp_obd->obd_name, msg, libcfs_id2str(req->rq_peer), via, router, body->oa.o_valid & OBD_MD_FLFID ? body->oa.o_fid : (__u64)0, body->oa.o_valid & OBD_MD_FLFID ? body->oa.o_generation :(__u64)0, body->oa.o_id, body->oa.o_valid & OBD_MD_FLGROUP ? body->oa.o_gr : (__u64)0, local_nb[0].offset, local_nb[npages-1].offset + local_nb[npages-1].len - 1 ); CERROR("client csum %x, original server csum %x, " "server csum now %x\n", client_cksum, server_cksum, new_cksum); } if (rc == 0) { int nob = 0; /* set per-requested niobuf return codes */ for (i = j = 0; i < niocount; i++) { int len = remote_nb[i].len; nob += len; rcs[i] = 0; do { LASSERT(j < npages); if (local_nb[j].rc < 0) rcs[i] = local_nb[j].rc; len -= local_nb[j].len; j++; } while (len > 0); LASSERT(len == 0); } LASSERT(j == npages); ptlrpc_lprocfs_brw(req, nob); } out_lock: ost_brw_lock_put(LCK_PW, ioo, remote_nb, &lockh); out_bulk: if (desc) ptlrpc_free_bulk(desc); out: if (rc == 0) { oti_to_request(oti, req); target_committed_to_req(req); rc = ptlrpc_reply(req); } else if (!no_reply) { /* Only reply if there was no comms problem with bulk */ target_committed_to_req(req); req->rq_status = rc; ptlrpc_error(req); } else { /* reply out callback would free */ ptlrpc_req_drop_rs(req); CWARN("%s: ignoring bulk IO comm error with %s@%s id %s - " "client will retry\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp->exp_connection->c_remote_uuid.uuid, libcfs_id2str(req->rq_peer)); } RETURN(rc); } static int ost_set_info(struct obd_export *exp, struct ptlrpc_request *req) { struct ost_body *body = NULL, *repbody; __u32 size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) }; char *key, *val = NULL; int keylen, vallen, rc = 0; ENTRY; key = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, 1); if (key == NULL) { DEBUG_REQ(D_HA, req, "no set_info key"); RETURN(-EFAULT); } keylen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF); if (KEY_IS(KEY_GRANT_SHRINK)) { rc = lustre_pack_reply(req, 2, size, NULL); if (rc) RETURN(rc); } else { rc = lustre_pack_reply(req, 1, NULL, NULL); if (rc) RETURN(rc); } vallen = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1); if (vallen) { if (KEY_IS(KEY_GRANT_SHRINK)) { body = lustre_swab_reqbuf(req, REQ_REC_OFF + 1, sizeof(*body), lustre_swab_ost_body); if (!body) RETURN(-EFAULT); repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*repbody)); memcpy(repbody, body, sizeof(*body)); val = (char*)repbody; } else val = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1,0); } if (KEY_IS(KEY_EVICT_BY_NID)) { if (val && vallen) obd_export_evict_by_nid(exp->exp_obd, val); GOTO(out, rc = 0); } else if (KEY_IS(KEY_MDS_CONN) && lustre_msg_swabbed(req->rq_reqmsg)) { /* Val's are not swabbed automatically */ __swab32s((__u32 *)val); } rc = obd_set_info_async(exp, keylen, key, vallen, val, NULL); out: lustre_msg_set_status(req->rq_repmsg, 0); RETURN(rc); } static int ost_get_info(struct obd_export *exp, struct ptlrpc_request *req) { void *key, *reply; int keylen, replylen, rc = 0; struct req_capsule *pill = &req->rq_pill; ENTRY; req_capsule_set(&req->rq_pill, &RQF_OST_GET_INFO_GENERIC); /* this common part for get_info rpc */ key = req_capsule_client_get(pill, &RMF_SETINFO_KEY); if (key == NULL) { DEBUG_REQ(D_HA, req, "no get_info key"); RETURN(-EFAULT); } keylen = req_capsule_get_size(pill, &RMF_SETINFO_KEY, RCL_CLIENT); rc = obd_get_info(exp, keylen, key, &replylen, NULL, NULL); if (rc) RETURN(rc); req_capsule_set_size(pill, &RMF_GENERIC_DATA, RCL_SERVER, replylen); rc = req_capsule_server_pack(pill); if (rc) RETURN(rc); reply = req_capsule_server_get(pill, &RMF_GENERIC_DATA); if (reply == NULL) RETURN(-ENOMEM); /* call again to fill in the reply buffer */ rc = obd_get_info(exp, keylen, key, &replylen, reply, NULL); lustre_msg_set_status(req->rq_repmsg, 0); RETURN(rc); } #ifdef HAVE_QUOTA_SUPPORT static int ost_handle_quotactl(struct ptlrpc_request *req) { struct obd_quotactl *oqctl, *repoqc; int rc; ENTRY; oqctl = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL); if (oqctl == NULL) GOTO(out, rc = -EPROTO); rc = req_capsule_server_pack(&req->rq_pill); if (rc) GOTO(out, rc); repoqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL); req->rq_status = obd_quotactl(req->rq_export, oqctl); *repoqc = *oqctl; out: RETURN(rc); } static int ost_handle_quotacheck(struct ptlrpc_request *req) { struct obd_quotactl *oqctl; int rc; ENTRY; oqctl = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL); if (oqctl == NULL) RETURN(-EPROTO); rc = req_capsule_server_pack(&req->rq_pill); if (rc) RETURN(-ENOMEM); req->rq_status = obd_quotacheck(req->rq_export, oqctl); RETURN(0); } static int ost_handle_quota_adjust_qunit(struct ptlrpc_request *req) { struct quota_adjust_qunit *oqaq, *repoqa; struct lustre_quota_ctxt *qctxt; int rc; ENTRY; qctxt = &req->rq_export->exp_obd->u.obt.obt_qctxt; oqaq = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT); if (oqaq == NULL) GOTO(out, rc = -EPROTO); rc = req_capsule_server_pack(&req->rq_pill); if (rc) GOTO(out, rc); repoqa = req_capsule_server_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT); req->rq_status = obd_quota_adjust_qunit(req->rq_export, oqaq, qctxt); *repoqa = *oqaq; out: RETURN(rc); } #endif static int ost_llog_handle_connect(struct obd_export *exp, struct ptlrpc_request *req) { struct llogd_conn_body *body; int rc; ENTRY; body = lustre_msg_buf(req->rq_reqmsg, 1, sizeof(*body)); rc = obd_llog_connect(exp, body); RETURN(rc); } #define ost_init_sec_none(reply, exp) \ do { \ reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT | \ OBD_CONNECT_RMT_CLIENT_FORCE | \ OBD_CONNECT_OSS_CAPA); \ spin_lock(&exp->exp_lock); \ exp->exp_connect_flags = reply->ocd_connect_flags; \ spin_unlock(&exp->exp_lock); \ } while (0) static int ost_init_sec_level(struct ptlrpc_request *req) { struct obd_export *exp = req->rq_export; struct req_capsule *pill = &req->rq_pill; struct obd_device *obd = exp->exp_obd; struct filter_obd *filter = &obd->u.filter; char *client = libcfs_nid2str(req->rq_peer.nid); struct obd_connect_data *data, *reply; int rc = 0, remote; ENTRY; data = req_capsule_client_get(pill, &RMF_CONNECT_DATA); reply = req_capsule_server_get(pill, &RMF_CONNECT_DATA); if (data == NULL || reply == NULL) RETURN(-EFAULT); /* connection from MDT is always trusted */ if (req->rq_auth_usr_mdt) { ost_init_sec_none(reply, exp); RETURN(0); } /* no GSS support case */ if (!req->rq_auth_gss) { if (filter->fo_sec_level > LUSTRE_SEC_NONE) { CWARN("client %s -> target %s does not user GSS, " "can not run under security level %d.\n", client, obd->obd_name, filter->fo_sec_level); RETURN(-EACCES); } else { ost_init_sec_none(reply, exp); RETURN(0); } } /* old version case */ if (unlikely(!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) || !(data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA))) { if (filter->fo_sec_level > LUSTRE_SEC_NONE) { CWARN("client %s -> target %s uses old version, " "can not run under security level %d.\n", client, obd->obd_name, filter->fo_sec_level); RETURN(-EACCES); } else { CWARN("client %s -> target %s uses old version, " "run under security level %d.\n", client, obd->obd_name, filter->fo_sec_level); ost_init_sec_none(reply, exp); RETURN(0); } } remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT_FORCE; if (remote) { if (!req->rq_auth_remote) CDEBUG(D_SEC, "client (local realm) %s -> target %s " "asked to be remote.\n", client, obd->obd_name); } else if (req->rq_auth_remote) { remote = 1; CDEBUG(D_SEC, "client (remote realm) %s -> target %s is set " "as remote by default.\n", client, obd->obd_name); } if (remote) { if (!filter->fo_fl_oss_capa) { CDEBUG(D_SEC, "client %s -> target %s is set as remote," " but OSS capabilities are not enabled: %d.\n", client, obd->obd_name, filter->fo_fl_oss_capa); RETURN(-EACCES); } } switch (filter->fo_sec_level) { case LUSTRE_SEC_NONE: if (!remote) { ost_init_sec_none(reply, exp); break; } else { CDEBUG(D_SEC, "client %s -> target %s is set as remote, " "can not run under security level %d.\n", client, obd->obd_name, filter->fo_sec_level); RETURN(-EACCES); } case LUSTRE_SEC_REMOTE: if (!remote) ost_init_sec_none(reply, exp); break; case LUSTRE_SEC_ALL: if (!remote) { reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_RMT_CLIENT_FORCE); if (!filter->fo_fl_oss_capa) reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA; spin_lock(&exp->exp_lock); exp->exp_connect_flags = reply->ocd_connect_flags; spin_unlock(&exp->exp_lock); } break; default: RETURN(-EINVAL); } RETURN(rc); } /* * FIXME * this should be done in filter_connect()/filter_reconnect(), but * we can't obtain information like NID, which stored in incoming * request, thus can't decide what flavor to use. so we do it here. * * This hack should be removed after the OST stack be rewritten, just * like what we are doing in mdt_obd_connect()/mdt_obd_reconnect(). */ static int ost_connect_check_sptlrpc(struct ptlrpc_request *req) { struct obd_export *exp = req->rq_export; struct filter_obd *filter = &exp->exp_obd->u.filter; struct sptlrpc_flavor flvr; int rc = 0; if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) { read_lock(&filter->fo_sptlrpc_lock); sptlrpc_target_choose_flavor(&filter->fo_sptlrpc_rset, req->rq_sp_from, req->rq_peer.nid, &flvr); read_unlock(&filter->fo_sptlrpc_lock); spin_lock(&exp->exp_lock); exp->exp_sp_peer = req->rq_sp_from; exp->exp_flvr = flvr; if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY && exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) { CERROR("unauthorized rpc flavor %x from %s, " "expect %x\n", req->rq_flvr.sf_rpc, libcfs_nid2str(req->rq_peer.nid), exp->exp_flvr.sf_rpc); rc = -EACCES; } spin_unlock(&exp->exp_lock); } else { if (exp->exp_sp_peer != req->rq_sp_from) { CERROR("RPC source %s doesn't match %s\n", sptlrpc_part2name(req->rq_sp_from), sptlrpc_part2name(exp->exp_sp_peer)); rc = -EACCES; } else { rc = sptlrpc_target_export_check(exp, req); } } return rc; } static int ost_filter_recovery_request(struct ptlrpc_request *req, struct obd_device *obd, int *process) { switch (lustre_msg_get_opc(req->rq_reqmsg)) { case OST_CONNECT: /* This will never get here, but for completeness. */ case OST_DISCONNECT: *process = 1; RETURN(0); case OBD_PING: case OST_CREATE: case OST_DESTROY: case OST_PUNCH: case OST_SETATTR: case OST_SYNC: case OST_WRITE: case OBD_LOG_CANCEL: case LDLM_ENQUEUE: *process = target_queue_recovery_request(req, obd); RETURN(0); default: DEBUG_REQ(D_ERROR, req, "not permitted during recovery"); *process = -EAGAIN; RETURN(0); } } int ost_msg_check_version(struct lustre_msg *msg) { int rc; switch(lustre_msg_get_opc(msg)) { case OST_CONNECT: case OST_DISCONNECT: case OBD_PING: case SEC_CTX_INIT: case SEC_CTX_INIT_CONT: case SEC_CTX_FINI: rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION); if (rc) CERROR("bad opc %u version %08x, expecting %08x\n", lustre_msg_get_opc(msg), lustre_msg_get_version(msg), LUSTRE_OBD_VERSION); break; case OST_CREATE: case OST_DESTROY: case OST_GETATTR: case OST_SETATTR: case OST_WRITE: case OST_READ: case OST_PUNCH: case OST_STATFS: case OST_SYNC: case OST_SET_INFO: case OST_GET_INFO: #ifdef HAVE_QUOTA_SUPPORT case OST_QUOTACHECK: case OST_QUOTACTL: case OST_QUOTA_ADJUST_QUNIT: #endif rc = lustre_msg_check_version(msg, LUSTRE_OST_VERSION); if (rc) CERROR("bad opc %u version %08x, expecting %08x\n", lustre_msg_get_opc(msg), lustre_msg_get_version(msg), LUSTRE_OST_VERSION); break; case LDLM_ENQUEUE: case LDLM_CONVERT: case LDLM_CANCEL: case LDLM_BL_CALLBACK: case LDLM_CP_CALLBACK: rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION); if (rc) CERROR("bad opc %u version %08x, expecting %08x\n", lustre_msg_get_opc(msg), lustre_msg_get_version(msg), LUSTRE_DLM_VERSION); break; case LLOG_ORIGIN_CONNECT: case OBD_LOG_CANCEL: rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION); if (rc) CERROR("bad opc %u version %08x, expecting %08x\n", lustre_msg_get_opc(msg), lustre_msg_get_version(msg), LUSTRE_LOG_VERSION); break; default: CERROR("Unexpected opcode %d\n", lustre_msg_get_opc(msg)); rc = -ENOTSUPP; } return rc; } static int ost_rw_hpreq_lock_match(struct ptlrpc_request *req, struct ldlm_lock *lock) { struct niobuf_remote *nb; struct obd_ioobj *ioo; struct ost_body *body; int objcount, niocount; int mode, opc, i; __u64 start, end; ENTRY; opc = lustre_msg_get_opc(req->rq_reqmsg); LASSERT(opc == OST_READ || opc == OST_WRITE); /* As the request may be covered by several locks, do not look at * o_handle, look at the RPC IO region. */ body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_obdo); objcount = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1) / sizeof(*ioo); ioo = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, objcount * sizeof(*ioo)); LASSERT(ioo != NULL); for (niocount = i = 0; i < objcount; i++) niocount += ioo[i].ioo_bufcnt; nb = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, niocount * sizeof(*nb)); LASSERT(nb != NULL); mode = LCK_PW; if (opc == OST_READ) mode |= LCK_PR; start = nb[0].offset & CFS_PAGE_MASK; end = (nb[ioo->ioo_bufcnt - 1].offset + nb[ioo->ioo_bufcnt - 1].len - 1) | ~CFS_PAGE_MASK; LASSERT(lock->l_resource != NULL); if (!osc_res_name_eq(ioo->ioo_id, ioo->ioo_gr, &lock->l_resource->lr_name)) RETURN(0); if (!(lock->l_granted_mode & mode)) RETURN(0); if (lock->l_policy_data.l_extent.end < start || lock->l_policy_data.l_extent.start > end) RETURN(0); RETURN(1); } /** * Swab buffers needed to call ost_rw_prolong_locks() and call it. * Return the value from ost_rw_prolong_locks() which is non-zero if * there is a cancelled lock which is waiting for this IO request. */ static int ost_rw_hpreq_check(struct ptlrpc_request *req) { struct niobuf_remote *nb; struct obd_ioobj *ioo; struct ost_body *body; int objcount, niocount; int mode, opc, i; ENTRY; opc = lustre_msg_get_opc(req->rq_reqmsg); LASSERT(opc == OST_READ || opc == OST_WRITE); body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body)); LASSERT(body != NULL); objcount = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1) / sizeof(*ioo); ioo = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 1, objcount * sizeof(*ioo)); LASSERT(ioo != NULL); for (niocount = i = 0; i < objcount; i++) niocount += ioo[i].ioo_bufcnt; nb = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF + 2, niocount * sizeof(*nb)); LASSERT(nb != NULL); LASSERT(niocount == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK)); mode = LCK_PW; if (opc == OST_READ) mode |= LCK_PR; RETURN(ost_rw_prolong_locks(req, ioo, nb, &body->oa, mode)); } static int ost_punch_prolong_locks(struct ptlrpc_request *req, struct obdo *oa) { struct ldlm_res_id res_id = { .name = { oa->o_id } }; struct ost_prolong_data opd = { 0 }; __u64 start, end; ENTRY; start = oa->o_size; end = start + oa->o_blocks; opd.opd_mode = LCK_PW; opd.opd_exp = req->rq_export; opd.opd_policy.l_extent.start = start & CFS_PAGE_MASK; if (oa->o_blocks == OBD_OBJECT_EOF || end < start) opd.opd_policy.l_extent.end = OBD_OBJECT_EOF; else opd.opd_policy.l_extent.end = end | ~CFS_PAGE_MASK; /* prolong locks for the current service time of the corresponding * portal (= OST_IO_PORTAL) */ opd.opd_timeout = AT_OFF ? obd_timeout / 2: max(at_est2timeout(at_get(&req->rq_rqbd-> rqbd_service->srv_at_estimate)), ldlm_timeout); CDEBUG(D_DLMTRACE,"refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n", res_id.name[0], res_id.name[1], opd.opd_policy.l_extent.start, opd.opd_policy.l_extent.end); opd.opd_oa = oa; ldlm_resource_iterate(req->rq_export->exp_obd->obd_namespace, &res_id, ost_prolong_locks_iter, &opd); RETURN(opd.opd_lock_match); } static int ost_punch_hpreq_lock_match(struct ptlrpc_request *req, struct ldlm_lock *lock) { struct ost_body *body; ENTRY; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_obdo); LASSERT(body != NULL); if (body->oa.o_valid & OBD_MD_FLHANDLE && body->oa.o_handle.cookie == lock->l_handle.h_cookie) RETURN(1); RETURN(0); } static int ost_punch_hpreq_check(struct ptlrpc_request *req) { struct ost_body *body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body)); LASSERT(body != NULL); LASSERT(!(body->oa.o_valid & OBD_MD_FLFLAGS) || !(body->oa.o_flags & OBD_FL_TRUNCLOCK)); RETURN(ost_punch_prolong_locks(req, &body->oa)); } struct ptlrpc_hpreq_ops ost_hpreq_rw = { .hpreq_lock_match = ost_rw_hpreq_lock_match, .hpreq_check = ost_rw_hpreq_check, }; struct ptlrpc_hpreq_ops ost_hpreq_punch = { .hpreq_lock_match = ost_punch_hpreq_lock_match, .hpreq_check = ost_punch_hpreq_check, }; /** Assign high priority operations to the request if needed. */ static int ost_hpreq_handler(struct ptlrpc_request *req) { ENTRY; if (req->rq_export) { int opc = lustre_msg_get_opc(req->rq_reqmsg); struct ost_body *body; if (opc == OST_READ || opc == OST_WRITE) { struct niobuf_remote *nb; struct obd_ioobj *ioo; int objcount, niocount; int swab, i; body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_obdo); if (!body) { CERROR("Missing/short ost_body\n"); RETURN(-EFAULT); } objcount = lustre_msg_buflen(req->rq_reqmsg, REQ_REC_OFF + 1) / sizeof(*ioo); if (objcount == 0) { CERROR("Missing/short ioobj\n"); RETURN(-EFAULT); } if (objcount > 1) { CERROR("too many ioobjs (%d)\n", objcount); RETURN(-EFAULT); } swab = !lustre_req_swabbed(req, REQ_REC_OFF + 1) && lustre_msg_swabbed(req->rq_reqmsg); ioo = lustre_swab_reqbuf(req, REQ_REC_OFF + 1, objcount * sizeof(*ioo), lustre_swab_obd_ioobj); if (!ioo) { CERROR("Missing/short ioobj\n"); RETURN(-EFAULT); } for (niocount = i = 0; i < objcount; i++) { if (i > 0 && swab) lustre_swab_obd_ioobj(&ioo[i]); if (ioo[i].ioo_bufcnt == 0) { CERROR("ioo[%d] has zero bufcnt\n", i); RETURN(-EFAULT); } niocount += ioo[i].ioo_bufcnt; } if (niocount > PTLRPC_MAX_BRW_PAGES) { DEBUG_REQ(D_ERROR, req, "bulk has too many " "pages (%d)", niocount); RETURN(-EFAULT); } swab = !lustre_req_swabbed(req, REQ_REC_OFF + 2) && lustre_msg_swabbed(req->rq_reqmsg); nb = lustre_swab_reqbuf(req, REQ_REC_OFF + 2, niocount * sizeof(*nb), lustre_swab_niobuf_remote); if (!nb) { CERROR("Missing/short niobuf\n"); RETURN(-EFAULT); } if (swab) { /* swab remaining niobufs */ for (i = 1; i < niocount; i++) lustre_swab_niobuf_remote(&nb[i]); } if (niocount == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK)) req->rq_ops = &ost_hpreq_rw; } else if (opc == OST_PUNCH) { body = lustre_swab_reqbuf(req, REQ_REC_OFF, sizeof(*body), lustre_swab_obdo); if (!body) { CERROR("Missing/short ost_body\n"); RETURN(-EFAULT); } if (!(body->oa.o_valid & OBD_MD_FLFLAGS) || !(body->oa.o_flags & OBD_FL_TRUNCLOCK)) req->rq_ops = &ost_hpreq_punch; } } RETURN(0); } /* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */ int ost_handle(struct ptlrpc_request *req) { struct obd_trans_info trans_info = { 0, }; struct obd_trans_info *oti = &trans_info; int should_process, fail = OBD_FAIL_OST_ALL_REPLY_NET, rc = 0; struct obd_device *obd = NULL; ENTRY; LASSERT(current->journal_info == NULL); /* primordial rpcs don't affect server recovery */ switch (lustre_msg_get_opc(req->rq_reqmsg)) { case SEC_CTX_INIT: case SEC_CTX_INIT_CONT: case SEC_CTX_FINI: GOTO(out, rc = 0); } req_capsule_init(&req->rq_pill, req, RCL_SERVER); /* XXX identical to MDS */ if (lustre_msg_get_opc(req->rq_reqmsg) != OST_CONNECT) { int recovering; if (req->rq_export == NULL) { CDEBUG(D_HA,"operation %d on unconnected OST from %s\n", lustre_msg_get_opc(req->rq_reqmsg), libcfs_id2str(req->rq_peer)); req->rq_status = -ENOTCONN; GOTO(out, rc = -ENOTCONN); } obd = req->rq_export->exp_obd; /* Check for aborted recovery. */ spin_lock_bh(&obd->obd_processing_task_lock); recovering = obd->obd_recovering; spin_unlock_bh(&obd->obd_processing_task_lock); if (recovering) { rc = ost_filter_recovery_request(req, obd, &should_process); if (rc || !should_process) RETURN(rc); else if (should_process < 0) { req->rq_status = should_process; rc = ptlrpc_error(req); RETURN(rc); } } } oti_init(oti, req); rc = ost_msg_check_version(req->rq_reqmsg); if (rc) RETURN(rc); switch (lustre_msg_get_opc(req->rq_reqmsg)) { case OST_CONNECT: { CDEBUG(D_INODE, "connect\n"); req_capsule_set(&req->rq_pill, &RQF_OST_CONNECT); if (OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET)) RETURN(0); rc = target_handle_connect(req); if (OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)) RETURN(0); if (!rc) { rc = ost_init_sec_level(req); if (!rc) rc = ost_connect_check_sptlrpc(req); } break; } case OST_DISCONNECT: CDEBUG(D_INODE, "disconnect\n"); req_capsule_set(&req->rq_pill, &RQF_OST_DISCONNECT); if (OBD_FAIL_CHECK(OBD_FAIL_OST_DISCONNECT_NET)) RETURN(0); rc = target_handle_disconnect(req); break; case OST_CREATE: CDEBUG(D_INODE, "create\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_CREATE_NET)) RETURN(0); if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC)) GOTO(out, rc = -ENOSPC); if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS)) GOTO(out, rc = -EROFS); rc = ost_create(req->rq_export, req, oti); break; case OST_DESTROY: CDEBUG(D_INODE, "destroy\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_DESTROY_NET)) RETURN(0); if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS)) GOTO(out, rc = -EROFS); rc = ost_destroy(req->rq_export, req, oti); break; case OST_GETATTR: CDEBUG(D_INODE, "getattr\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_GETATTR_NET)) RETURN(0); rc = ost_getattr(req->rq_export, req); break; case OST_SETATTR: CDEBUG(D_INODE, "setattr\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_NET)) RETURN(0); rc = ost_setattr(req->rq_export, req, oti); break; case OST_WRITE: CDEBUG(D_INODE, "write\n"); /* req->rq_request_portal would be nice, if it was set */ if (req->rq_rqbd->rqbd_service->srv_req_portal !=OST_IO_PORTAL){ CERROR("%s: deny write request from %s to portal %u\n", req->rq_export->exp_obd->obd_name, obd_export_nid2str(req->rq_export), req->rq_rqbd->rqbd_service->srv_req_portal); GOTO(out, rc = -EPROTO); } if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_NET)) RETURN(0); if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC)) GOTO(out, rc = -ENOSPC); if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS)) GOTO(out, rc = -EROFS); rc = ost_brw_write(req, oti); LASSERT(current->journal_info == NULL); /* ost_brw_write sends its own replies */ RETURN(rc); case OST_READ: CDEBUG(D_INODE, "read\n"); /* req->rq_request_portal would be nice, if it was set */ if (req->rq_rqbd->rqbd_service->srv_req_portal !=OST_IO_PORTAL){ CERROR("%s: deny read request from %s to portal %u\n", req->rq_export->exp_obd->obd_name, obd_export_nid2str(req->rq_export), req->rq_rqbd->rqbd_service->srv_req_portal); GOTO(out, rc = -EPROTO); } if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_NET)) RETURN(0); rc = ost_brw_read(req, oti); LASSERT(current->journal_info == NULL); /* ost_brw_read sends its own replies */ RETURN(rc); case OST_PUNCH: CDEBUG(D_INODE, "punch\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_PUNCH_NET)) RETURN(0); if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS)) GOTO(out, rc = -EROFS); rc = ost_punch(req->rq_export, req, oti); break; case OST_STATFS: CDEBUG(D_INODE, "statfs\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_NET)) RETURN(0); rc = ost_statfs(req); break; case OST_SYNC: CDEBUG(D_INODE, "sync\n"); if (OBD_FAIL_CHECK(OBD_FAIL_OST_SYNC_NET)) RETURN(0); rc = ost_sync(req->rq_export, req); break; case OST_SET_INFO: DEBUG_REQ(D_INODE, req, "set_info"); req_capsule_set(&req->rq_pill, &RQF_OST_SET_INFO); rc = ost_set_info(req->rq_export, req); break; case OST_GET_INFO: DEBUG_REQ(D_INODE, req, "get_info"); rc = ost_get_info(req->rq_export, req); break; #ifdef HAVE_QUOTA_SUPPORT case OST_QUOTACHECK: CDEBUG(D_INODE, "quotacheck\n"); req_capsule_set(&req->rq_pill, &RQF_OST_QUOTACHECK); if (OBD_FAIL_CHECK(OBD_FAIL_OST_QUOTACHECK_NET)) RETURN(0); rc = ost_handle_quotacheck(req); break; case OST_QUOTACTL: CDEBUG(D_INODE, "quotactl\n"); req_capsule_set(&req->rq_pill, &RQF_OST_QUOTACTL); if (OBD_FAIL_CHECK(OBD_FAIL_OST_QUOTACTL_NET)) RETURN(0); rc = ost_handle_quotactl(req); break; case OST_QUOTA_ADJUST_QUNIT: CDEBUG(D_INODE, "quota_adjust_qunit\n"); req_capsule_set(&req->rq_pill, &RQF_OST_QUOTA_ADJUST_QUNIT); rc = ost_handle_quota_adjust_qunit(req); break; #endif case OBD_PING: DEBUG_REQ(D_INODE, req, "ping"); req_capsule_set(&req->rq_pill, &RQF_OBD_PING); rc = target_handle_ping(req); break; /* FIXME - just reply status */ case LLOG_ORIGIN_CONNECT: DEBUG_REQ(D_INODE, req, "log connect"); req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_CONNECT); rc = ost_llog_handle_connect(req->rq_export, req); req->rq_status = rc; rc = req_capsule_server_pack(&req->rq_pill); if (rc) RETURN(rc); RETURN(ptlrpc_reply(req)); case OBD_LOG_CANCEL: CDEBUG(D_INODE, "log cancel\n"); req_capsule_set(&req->rq_pill, &RQF_LOG_CANCEL); if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOG_CANCEL_NET)) RETURN(0); rc = llog_origin_handle_cancel(req); if (OBD_FAIL_CHECK(OBD_FAIL_OBD_LOG_CANCEL_REP)) RETURN(0); req->rq_status = rc; rc = req_capsule_server_pack(&req->rq_pill); if (rc) RETURN(rc); RETURN(ptlrpc_reply(req)); case LDLM_ENQUEUE: CDEBUG(D_INODE, "enqueue\n"); req_capsule_set(&req->rq_pill, &RQF_LDLM_ENQUEUE); if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE)) RETURN(0); rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast, ldlm_server_blocking_ast, ldlm_server_glimpse_ast); fail = OBD_FAIL_OST_LDLM_REPLY_NET; break; case LDLM_CONVERT: CDEBUG(D_INODE, "convert\n"); req_capsule_set(&req->rq_pill, &RQF_LDLM_CONVERT); if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CONVERT)) RETURN(0); rc = ldlm_handle_convert(req); break; case LDLM_CANCEL: CDEBUG(D_INODE, "cancel\n"); req_capsule_set(&req->rq_pill, &RQF_LDLM_CANCEL); if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL)) RETURN(0); rc = ldlm_handle_cancel(req); break; case LDLM_BL_CALLBACK: case LDLM_CP_CALLBACK: CDEBUG(D_INODE, "callback\n"); CERROR("callbacks should not happen on OST\n"); /* fall through */ default: CERROR("Unexpected opcode %d\n", lustre_msg_get_opc(req->rq_reqmsg)); req->rq_status = -ENOTSUPP; rc = ptlrpc_error(req); RETURN(rc); } LASSERT(current->journal_info == NULL); EXIT; /* If we're DISCONNECTing, the export_data is already freed */ if (!rc && lustre_msg_get_opc(req->rq_reqmsg) != OST_DISCONNECT) target_committed_to_req(req); out: if (!rc) oti_to_request(oti, req); target_send_reply(req, rc, fail); return 0; } EXPORT_SYMBOL(ost_handle); /* * free per-thread pool created by ost_thread_init(). */ static void ost_thread_done(struct ptlrpc_thread *thread) { struct ost_thread_local_cache *tls; /* TLS stands for Thread-Local * Storage */ ENTRY; LASSERT(thread != NULL); /* * be prepared to handle partially-initialized pools (because this is * called from ost_thread_init() for cleanup. */ tls = thread->t_data; if (tls != NULL) { OBD_FREE_PTR(tls); thread->t_data = NULL; } EXIT; } /* * initialize per-thread page pool (bug 5137). */ static int ost_thread_init(struct ptlrpc_thread *thread) { struct ost_thread_local_cache *tls; ENTRY; LASSERT(thread != NULL); LASSERT(thread->t_data == NULL); LASSERTF(thread->t_id <= OSS_THREADS_MAX, "%u\n", thread->t_id); OBD_ALLOC_PTR(tls); if (tls == NULL) RETURN(-ENOMEM); thread->t_data = tls; RETURN(0); } #define OST_WATCHDOG_TIMEOUT (obd_timeout * 1000) /* Sigh - really, this is an OSS, the _server_, not the _target_ */ static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg) { struct ost_obd *ost = &obd->u.ost; struct lprocfs_static_vars lvars; int oss_min_threads; int oss_max_threads; int oss_min_create_threads; int oss_max_create_threads; int rc; ENTRY; rc = cleanup_group_info(); if (rc) RETURN(rc); lprocfs_ost_init_vars(&lvars); lprocfs_obd_setup(obd, lvars.obd_vars); sema_init(&ost->ost_health_sem, 1); if (oss_num_threads) { /* If oss_num_threads is set, it is the min and the max. */ if (oss_num_threads > OSS_THREADS_MAX) oss_num_threads = OSS_THREADS_MAX; if (oss_num_threads < OSS_THREADS_MIN) oss_num_threads = OSS_THREADS_MIN; oss_max_threads = oss_min_threads = oss_num_threads; } else { /* Base min threads on memory and cpus */ oss_min_threads = num_possible_cpus() * num_physpages >> (27 - CFS_PAGE_SHIFT); if (oss_min_threads < OSS_THREADS_MIN) oss_min_threads = OSS_THREADS_MIN; /* Insure a 4x range for dynamic threads */ if (oss_min_threads > OSS_THREADS_MAX / 4) oss_min_threads = OSS_THREADS_MAX / 4; oss_max_threads = min(OSS_THREADS_MAX, oss_min_threads * 4 + 1); } ost->ost_service = ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE, OST_MAXREPSIZE, OST_REQUEST_PORTAL, OSC_REPLY_PORTAL, OSS_SERVICE_WATCHDOG_FACTOR, ost_handle, LUSTRE_OSS_NAME, obd->obd_proc_entry, target_print_req, oss_min_threads, oss_max_threads, "ll_ost", LCT_DT_THREAD, NULL); if (ost->ost_service == NULL) { CERROR("failed to start service\n"); GOTO(out_lprocfs, rc = -ENOMEM); } rc = ptlrpc_start_threads(obd, ost->ost_service); if (rc) GOTO(out_service, rc = -EINVAL); if (oss_num_create_threads) { if (oss_num_create_threads > OSS_MAX_CREATE_THREADS) oss_num_create_threads = OSS_MAX_CREATE_THREADS; if (oss_num_create_threads < OSS_MIN_CREATE_THREADS) oss_num_create_threads = OSS_MIN_CREATE_THREADS; oss_min_create_threads = oss_max_create_threads = oss_num_create_threads; } else { oss_min_create_threads = OSS_MIN_CREATE_THREADS; oss_max_create_threads = OSS_MAX_CREATE_THREADS; } ost->ost_create_service = ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE, OST_MAXREPSIZE, OST_CREATE_PORTAL, OSC_REPLY_PORTAL, OSS_SERVICE_WATCHDOG_FACTOR, ost_handle, "ost_create", obd->obd_proc_entry, target_print_req, oss_min_create_threads, oss_max_create_threads, "ll_ost_creat", LCT_DT_THREAD, NULL); if (ost->ost_create_service == NULL) { CERROR("failed to start OST create service\n"); GOTO(out_service, rc = -ENOMEM); } rc = ptlrpc_start_threads(obd, ost->ost_create_service); if (rc) GOTO(out_create, rc = -EINVAL); ost->ost_io_service = ptlrpc_init_svc(OST_NBUFS, OST_BUFSIZE, OST_MAXREQSIZE, OST_MAXREPSIZE, OST_IO_PORTAL, OSC_REPLY_PORTAL, OSS_SERVICE_WATCHDOG_FACTOR, ost_handle, "ost_io", obd->obd_proc_entry, target_print_req, oss_min_threads, oss_max_threads, "ll_ost_io", LCT_DT_THREAD, ost_hpreq_handler); if (ost->ost_io_service == NULL) { CERROR("failed to start OST I/O service\n"); GOTO(out_create, rc = -ENOMEM); } ost->ost_io_service->srv_init = ost_thread_init; ost->ost_io_service->srv_done = ost_thread_done; ost->ost_io_service->srv_cpu_affinity = 1; rc = ptlrpc_start_threads(obd, ost->ost_io_service); if (rc) GOTO(out_io, rc = -EINVAL); ping_evictor_start(); RETURN(0); out_io: ptlrpc_unregister_service(ost->ost_io_service); ost->ost_io_service = NULL; out_create: ptlrpc_unregister_service(ost->ost_create_service); ost->ost_create_service = NULL; out_service: ptlrpc_unregister_service(ost->ost_service); ost->ost_service = NULL; out_lprocfs: lprocfs_obd_cleanup(obd); RETURN(rc); } static int ost_cleanup(struct obd_device *obd) { struct ost_obd *ost = &obd->u.ost; int err = 0; ENTRY; ping_evictor_stop(); spin_lock_bh(&obd->obd_processing_task_lock); if (obd->obd_recovering) { target_cancel_recovery_timer(obd); obd->obd_recovering = 0; } spin_unlock_bh(&obd->obd_processing_task_lock); down(&ost->ost_health_sem); ptlrpc_unregister_service(ost->ost_service); ptlrpc_unregister_service(ost->ost_create_service); ptlrpc_unregister_service(ost->ost_io_service); ost->ost_service = NULL; ost->ost_create_service = NULL; up(&ost->ost_health_sem); lprocfs_obd_cleanup(obd); RETURN(err); } static int ost_health_check(struct obd_device *obd) { struct ost_obd *ost = &obd->u.ost; int rc = 0; down(&ost->ost_health_sem); rc |= ptlrpc_service_health_check(ost->ost_service); rc |= ptlrpc_service_health_check(ost->ost_create_service); rc |= ptlrpc_service_health_check(ost->ost_io_service); up(&ost->ost_health_sem); /* * health_check to return 0 on healthy * and 1 on unhealthy. */ if( rc != 0) rc = 1; return rc; } struct ost_thread_local_cache *ost_tls(struct ptlrpc_request *r) { return (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data); } /* use obd ops to offer management infrastructure */ static struct obd_ops ost_obd_ops = { .o_owner = THIS_MODULE, .o_setup = ost_setup, .o_cleanup = ost_cleanup, .o_health_check = ost_health_check, }; static int __init ost_init(void) { struct lprocfs_static_vars lvars; int rc; ENTRY; lprocfs_ost_init_vars(&lvars); rc = class_register_type(&ost_obd_ops, NULL, lvars.module_vars, LUSTRE_OSS_NAME, NULL); if (ost_num_threads != 0 && oss_num_threads == 0) { LCONSOLE_INFO("ost_num_threads module parameter is deprecated, " "use oss_num_threads instead or unset both for " "dynamic thread startup\n"); oss_num_threads = ost_num_threads; } RETURN(rc); } static void /*__exit*/ ost_exit(void) { class_unregister_type(LUSTRE_OSS_NAME); } MODULE_AUTHOR("Sun Microsystems, Inc. "); MODULE_DESCRIPTION("Lustre Object Storage Target (OST) v0.01"); MODULE_LICENSE("GPL"); module_init(ost_init); module_exit(ost_exit);