X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Flmv%2Flmv_obd.c;h=643f5b3bd73f75477e2cdacdcdb7b41a6c445426;hp=e21076e756f47fdb3ee68717b9e81228f3ed06cf;hb=32becabb43b6e8f21c030c23c01c3f02e351eaea;hpb=39e41752293f4e34a32626b93a87455c61a42faa diff --git a/lustre/lmv/lmv_obd.c b/lustre/lmv/lmv_obd.c index e21076e..643f5b3 100644 --- a/lustre/lmv/lmv_obd.c +++ b/lustre/lmv/lmv_obd.c @@ -1,22 +1,37 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * - * Copyright (C) 2002, 2003 Cluster File Systems, Inc. + * GPL HEADER START * - * This file is part of Lustre, http://www.lustre.org. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. + * 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. * - * Lustre 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 for more details. + * 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 - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * 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. */ #ifndef EXPORT_SYMTAB @@ -29,49 +44,42 @@ #include #include #include +#include #include #include #include #else #include #endif -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "lmv_internal.h" -/* not defined for liblustre building */ -#if !defined(ATOMIC_INIT) -#define ATOMIC_INIT(val) { (val) } -#endif +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "lmv_internal.h" /* object cache. */ -kmem_cache_t *obj_cache; -atomic_t obj_cache_count = ATOMIC_INIT(0); +cfs_mem_cache_t *lmv_object_cache; +atomic_t lmv_object_count = ATOMIC_INIT(0); static void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt, int activate) { - if (tgt->active == activate) + if (tgt->ltd_active == activate) return; - - tgt->active = activate; + + tgt->ltd_active = activate; lmv->desc.ld_active_tgt_count += (activate ? 1 : -1); } -/* Error codes: +/** + * Error codes: * * -EINVAL : UUID can't be found in the LMV's target list * -ENOTCONN: The UUID is found, but the target connection is bad (!) @@ -80,9 +88,10 @@ static void lmv_activate_target(struct lmv_obd *lmv, static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid, int activate) { - struct lmv_tgt_desc *tgt; - struct obd_device *obd; - int i, rc = 0; + struct lmv_tgt_desc *tgt; + struct obd_device *obd; + int i; + int rc = 0; ENTRY; CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n", @@ -93,10 +102,10 @@ static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid, if (tgt->ltd_exp == NULL) continue; - CDEBUG(D_INFO, "lmv idx %d is %s conn "LPX64"\n", - i, tgt->uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie); + CDEBUG(D_INFO, "Target idx %d is %s conn "LPX64"\n", + i, tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie); - if (obd_uuid_equals(uuid, &tgt->uuid)) + if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) break; } @@ -110,123 +119,163 @@ static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid, CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n", obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd, obd->obd_type->typ_name, i); - LASSERT(strcmp(obd->obd_type->typ_name, OBD_MDC_DEVICENAME) == 0); + LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0); - if (tgt->active == activate) { + if (tgt->ltd_active == activate) { CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd, activate ? "" : "in"); GOTO(out_lmv_lock, rc); } - CDEBUG(D_INFO, "Marking OBD %p %sactive\n", - obd, activate ? "" : "in"); - + CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd, + activate ? "" : "in"); lmv_activate_target(lmv, tgt, activate); - EXIT; - + out_lmv_lock: spin_unlock(&lmv->lmv_lock); return rc; } +static int lmv_set_mdc_data(struct lmv_obd *lmv, struct obd_uuid *uuid, + struct obd_connect_data *data) +{ + struct lmv_tgt_desc *tgt; + int i; + ENTRY; + + LASSERT(data != NULL); + + spin_lock(&lmv->lmv_lock); + for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) { + if (tgt->ltd_exp == NULL) + continue; + + if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) { + lmv->datas[tgt->ltd_idx] = *data; + break; + } + } + spin_unlock(&lmv->lmv_lock); + RETURN(0); +} + +struct obd_uuid *lmv_get_uuid(struct obd_export *exp) { + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + return obd_get_uuid(lmv->tgts[0].ltd_exp); +} + static int lmv_notify(struct obd_device *obd, struct obd_device *watched, - int active, void *data) + enum obd_notify_event ev, void *data) { - struct obd_uuid *uuid; - int rc; + struct obd_connect_data *conn_data; + struct lmv_obd *lmv = &obd->u.lmv; + struct obd_uuid *uuid; + int rc = 0; ENTRY; - if (strcmp(watched->obd_type->typ_name, OBD_MDC_DEVICENAME)) { + if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) { CERROR("unexpected notification of %s %s!\n", watched->obd_type->typ_name, watched->obd_name); RETURN(-EINVAL); } - uuid = &watched->u.cli.cl_import->imp_target_uuid; - - /* Set MDC as active before notifying the observer, so the observer can - * use the MDC normally. - */ - rc = lmv_set_mdc_active(&obd->u.lmv, uuid, active); - if (rc) { - CERROR("%sactivation of %s failed: %d\n", - active ? "" : "de", uuid->uuid, rc); - RETURN(rc); - } - - if (obd->obd_observer) - /* Pass the notification up the chain. */ - rc = obd_notify(obd->obd_observer, watched, active, data); - RETURN(rc); -} + uuid = &watched->u.cli.cl_target_uuid; + if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) { + /* + * Set MDC as active before notifying the observer, so the + * observer can use the MDC normally. + */ + rc = lmv_set_mdc_active(lmv, uuid, + ev == OBD_NOTIFY_ACTIVE); + if (rc) { + CERROR("%sactivation of %s failed: %d\n", + ev == OBD_NOTIFY_ACTIVE ? "" : "de", + uuid->uuid, rc); + RETURN(rc); + } + } else if (ev == OBD_NOTIFY_OCD) { + conn_data = &watched->u.cli.cl_import->imp_connect_data; -static int lmv_attach(struct obd_device *dev, obd_count len, void *data) -{ - struct lprocfs_static_vars lvars; - int rc; - ENTRY; + /* + * Set connect data to desired target, update exp_connect_flags. + */ + rc = lmv_set_mdc_data(lmv, uuid, conn_data); + if (rc) { + CERROR("can't set connect data to target %s, rc %d\n", + uuid->uuid, rc); + RETURN(rc); + } - lprocfs_init_vars(lmv, &lvars); - rc = lprocfs_obd_attach(dev, lvars.obd_vars); -#ifdef __KERNEL__ - if (rc == 0) { - struct proc_dir_entry *entry; - - entry = create_proc_entry("target_obd_status", 0444, - dev->obd_proc_entry); - if (entry == NULL) - RETURN(-ENOMEM); - entry->proc_fops = &lmv_proc_target_fops; - entry->data = dev; - } + /* + * XXX: Make sure that ocd_connect_flags from all targets are + * the same. Otherwise one of MDTs runs wrong version or + * something like this. --umka + */ + obd->obd_self_export->exp_connect_flags = + conn_data->ocd_connect_flags; + } +#if 0 + else if (ev == OBD_NOTIFY_DISCON) { + /* + * For disconnect event, flush fld cache for failout MDS case. + */ + fld_client_flush(&lmv->lmv_fld); + } #endif - RETURN (rc); -} + /* + * Pass the notification up the chain. + */ + if (obd->obd_observer) + rc = obd_notify(obd->obd_observer, watched, ev, data); -static int lmv_detach(struct obd_device *dev) -{ - return lprocfs_obd_detach(dev); + RETURN(rc); } -/* this is fake connect function. Its purpose is to initialize lmv and say - * caller that everything is okay. Real connection will be performed later. */ -static int lmv_connect(struct lustre_handle *conn, struct obd_device *obd, +/** + * This is fake connect function. Its purpose is to initialize lmv and say + * caller that everything is okay. Real connection will be performed later. + */ +static int lmv_connect(const struct lu_env *env, + struct obd_export **exp, struct obd_device *obd, struct obd_uuid *cluuid, struct obd_connect_data *data, - unsigned long flags) + void *localdata) { #ifdef __KERNEL__ struct proc_dir_entry *lmv_proc_dir; #endif - struct lmv_obd *lmv = &obd->u.lmv; - struct obd_export *exp; - int rc = 0; + struct lmv_obd *lmv = &obd->u.lmv; + struct lustre_handle conn = { 0 }; + int rc = 0; ENTRY; - rc = class_connect(conn, obd, cluuid); + /* + * We don't want to actually do the underlying connections more than + * once, so keep track. + */ + lmv->refcount++; + if (lmv->refcount > 1) { + *exp = NULL; + RETURN(0); + } + + rc = class_connect(&conn, obd, cluuid); if (rc) { CERROR("class_connection() returned %d\n", rc); RETURN(rc); } - exp = class_conn2export(conn); - - /* we don't want to actually do the underlying connections more than - * once, so keep track. */ - lmv->refcount++; - if (lmv->refcount > 1) { - class_export_put(exp); - RETURN(0); - } + *exp = class_conn2export(&conn); + class_export_get(*exp); - lmv->exp = exp; + lmv->exp = *exp; lmv->connected = 0; lmv->cluuid = *cluuid; - lmv->connect_flags = flags; - sema_init(&lmv->init_sem, 1); + if (data) - memcpy(&lmv->conn_data, data, sizeof(*data)); + lmv->conn_data = *data; #ifdef __KERNEL__ lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry, @@ -238,19 +287,19 @@ static int lmv_connect(struct lustre_handle *conn, struct obd_device *obd, } #endif - /* - * all real clients shouls perform actual connection rightaway, because - * it is possible, that LMV will not have opportunity to connect - * targets, as MDC stuff will bit called directly, for instance while - * reading ../mdc/../kbytesfree procfs file, etc. + /* + * All real clients should perform actual connection right away, because + * it is possible, that LMV will not have opportunity to connect targets + * and MDC stuff will be called directly, for instance while reading + * ../mdc/../kbytesfree procfs file, etc. */ - if (flags & OBD_OPT_REAL_CLIENT) + if (data->ocd_connect_flags & OBD_CONNECT_REAL) rc = lmv_check_connect(obd); #ifdef __KERNEL__ if (rc) { if (lmv_proc_dir) - lprocfs_remove(lmv_proc_dir); + lprocfs_remove(&lmv_proc_dir); } #endif @@ -259,9 +308,9 @@ static int lmv_connect(struct lustre_handle *conn, struct obd_device *obd, static void lmv_set_timeouts(struct obd_device *obd) { - struct lmv_tgt_desc *tgts; - struct lmv_obd *lmv; - int i; + struct lmv_tgt_desc *tgts; + struct lmv_obd *lmv; + int i; lmv = &obd->u.lmv; if (lmv->server_timeout == 0) @@ -273,363 +322,849 @@ static void lmv_set_timeouts(struct obd_device *obd) for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) { if (tgts->ltd_exp == NULL) continue; - - obd_set_info(tgts->ltd_exp, strlen("inter_mds"), - "inter_mds", 0, NULL); + + obd_set_info_async(tgts->ltd_exp, sizeof(KEY_INTERMDS), + KEY_INTERMDS, 0, NULL, NULL); } } -#define MAX_STRING_SIZE 128 - -/* performs a check if passed obd is connected. If no - connect it. */ -int lmv_check_connect(struct obd_device *obd) +static int lmv_init_ea_size(struct obd_export *exp, int easize, + int def_easize, int cookiesize) { -#ifdef __KERNEL__ - struct proc_dir_entry *lmv_proc_dir; -#endif - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgts; - struct obd_uuid *cluuid; - struct obd_export *exp; - int rc, rc2, i; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int i; + int rc = 0; + int change = 0; ENTRY; - if (lmv->connected) - RETURN(0); - - down(&lmv->init_sem); - if (lmv->connected) { - up(&lmv->init_sem); - RETURN(0); + if (lmv->max_easize < easize) { + lmv->max_easize = easize; + change = 1; } + if (lmv->max_def_easize < def_easize) { + lmv->max_def_easize = def_easize; + change = 1; + } + if (lmv->max_cookiesize < cookiesize) { + lmv->max_cookiesize = cookiesize; + change = 1; + } + if (change == 0) + RETURN(0); - cluuid = &lmv->cluuid; - exp = lmv->exp; - - CDEBUG(D_OTHER, "time to connect %s to %s\n", - cluuid->uuid, obd->obd_name); - - for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) { - struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" }; - struct lustre_handle conn = {0, }; - struct obd_device *tgt_obd; - - LASSERT(tgts != NULL); - - tgt_obd = class_find_client_obd(&tgts->uuid, OBD_MDC_DEVICENAME, - &obd->obd_uuid); - if (!tgt_obd) { - CERROR("target %s not attached\n", tgts->uuid.uuid); - GOTO(out_disc, rc = -EINVAL); - } + if (lmv->connected == 0) + RETURN(0); - /* for MDS: don't connect to yourself */ - if (obd_uuid_equals(&tgts->uuid, cluuid)) { - CDEBUG(D_OTHER, "don't connect back to %s\n", - cluuid->uuid); - tgts->ltd_exp = NULL; + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + if (lmv->tgts[i].ltd_exp == NULL) { + CWARN("%s: NULL export for %d\n", obd->obd_name, i); continue; } - CDEBUG(D_OTHER, "connect to %s(%s) - %s, %s FOR %s\n", - tgt_obd->obd_name, tgt_obd->obd_uuid.uuid, - tgts->uuid.uuid, obd->obd_uuid.uuid, - cluuid->uuid); - - if (!tgt_obd->obd_set_up) { - CERROR("target %s not set up\n", tgts->uuid.uuid); - GOTO(out_disc, rc = -EINVAL); - } - - rc = obd_connect(&conn, tgt_obd, &lmv_mdc_uuid, &lmv->conn_data, - lmv->connect_flags); - if (rc) { - CERROR("target %s connect error %d\n", - tgts->uuid.uuid, rc); - GOTO(out_disc, rc); - } - tgts->ltd_exp = class_conn2export(&conn); - - obd_init_ea_size(tgts->ltd_exp, lmv->max_easize, - lmv->max_cookiesize); - - rc = obd_register_observer(tgt_obd, obd); + rc = md_init_ea_size(lmv->tgts[i].ltd_exp, easize, def_easize, + cookiesize); if (rc) { - CERROR("target %s register_observer error %d\n", - tgts->uuid.uuid, rc); - obd_disconnect(tgts->ltd_exp, 0); - GOTO(out_disc, rc); - } - - lmv->desc.ld_active_tgt_count++; - tgts->active = 1; - - CDEBUG(D_OTHER, "connected to %s(%s) successfully (%d)\n", - tgt_obd->obd_name, tgt_obd->obd_uuid.uuid, - atomic_read(&obd->obd_refcount)); - -#ifdef __KERNEL__ - lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); - if (lmv_proc_dir) { - struct obd_device *mdc_obd = class_conn2obd(&conn); - struct proc_dir_entry *mdc_symlink; - char name[MAX_STRING_SIZE + 1]; - - LASSERT(mdc_obd != NULL); - LASSERT(mdc_obd->obd_type != NULL); - LASSERT(mdc_obd->obd_type->typ_name != NULL); - name[MAX_STRING_SIZE] = '\0'; - snprintf(name, MAX_STRING_SIZE, "../../../%s/%s", - mdc_obd->obd_type->typ_name, - mdc_obd->obd_name); - mdc_symlink = proc_symlink(mdc_obd->obd_name, - lmv_proc_dir, name); - if (mdc_symlink == NULL) { - CERROR("could not register LMV target " - "/proc/fs/lustre/%s/%s/target_obds/%s.", - obd->obd_type->typ_name, obd->obd_name, - mdc_obd->obd_name); - lprocfs_remove(lmv_proc_dir); - lmv_proc_dir = NULL; - } + CERROR("obd_init_ea_size() failed on MDT target %d, " + "error %d.\n", i, rc); + break; } -#endif } - - lmv_set_timeouts(obd); - class_export_put(exp); - lmv->connected = 1; - up(&lmv->init_sem); - RETURN(0); - - out_disc: - while (i-- > 0) { - struct obd_uuid uuid; - --tgts; - --lmv->desc.ld_active_tgt_count; - tgts->active = 0; - /* save for CERROR below; (we know it's terminated) */ - uuid = tgts->uuid; - rc2 = obd_disconnect(tgts->ltd_exp, 0); - if (rc2) - CERROR("error: LMV target %s disconnect on MDC idx %d: " - "error %d\n", uuid.uuid, i, rc2); - } - class_disconnect(exp, 0); - up(&lmv->init_sem); - return rc; + RETURN(rc); } -static int lmv_disconnect(struct obd_export *exp, unsigned long flags) -{ - struct obd_device *obd = class_exp2obd(exp); - struct lmv_obd *lmv = &obd->u.lmv; +#define MAX_STRING_SIZE 128 +int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt) +{ #ifdef __KERNEL__ - struct proc_dir_entry *lmv_proc_dir; + struct proc_dir_entry *lmv_proc_dir; #endif - int rc, i; + struct lmv_obd *lmv = &obd->u.lmv; + struct obd_uuid *cluuid = &lmv->cluuid; + struct obd_connect_data *mdc_data = NULL; + struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" }; + struct obd_device *mdc_obd; + struct obd_export *mdc_exp; + struct lu_fld_target target; + int rc; ENTRY; - if (!lmv->tgts) - goto out_local; + mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME, + &obd->obd_uuid); + if (!mdc_obd) { + CERROR("target %s not attached\n", tgt->ltd_uuid.uuid); + RETURN(-EINVAL); + } - /* Only disconnect the underlying layers on the final disconnect. */ - lmv->refcount--; - if (lmv->refcount != 0) - goto out_local; + CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n", + mdc_obd->obd_name, mdc_obd->obd_uuid.uuid, + tgt->ltd_uuid.uuid, obd->obd_uuid.uuid, + cluuid->uuid); -#ifdef __KERNEL__ - lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); -#endif + if (!mdc_obd->obd_set_up) { + CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid); + RETURN(-EINVAL); + } - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - struct obd_device *mdc_obd; - - if (lmv->tgts[i].ltd_exp == NULL) - continue; + rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid, + &lmv->conn_data, NULL); + if (rc) { + CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc); + RETURN(rc); + } + + /* + * Init fid sequence client for this mdc and add new fld target. + */ + rc = obd_fid_init(mdc_exp); + if (rc) + RETURN(rc); - mdc_obd = class_exp2obd(lmv->tgts[i].ltd_exp); + target.ft_srv = NULL; + target.ft_exp = mdc_exp; + target.ft_idx = tgt->ltd_idx; - if (mdc_obd) - mdc_obd->obd_no_recov = obd->obd_no_recov; + fld_client_add_target(&lmv->lmv_fld, &target); -#ifdef __KERNEL__ - if (lmv_proc_dir) { - struct proc_dir_entry *mdc_symlink; + mdc_data = &class_exp2cliimp(mdc_exp)->imp_connect_data; - mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name); - if (mdc_symlink) { - lprocfs_remove(mdc_symlink); - } else { - CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n", - obd->obd_type->typ_name, obd->obd_name, - mdc_obd->obd_name); - } - } -#endif - CDEBUG(D_OTHER, "disconnected from %s(%s) successfully\n", - lmv->tgts[i].ltd_exp->exp_obd->obd_name, - lmv->tgts[i].ltd_exp->exp_obd->obd_uuid.uuid); + rc = obd_register_observer(mdc_obd, obd); + if (rc) { + obd_disconnect(mdc_exp); + CERROR("target %s register_observer error %d\n", + tgt->ltd_uuid.uuid, rc); + RETURN(rc); + } - obd_register_observer(lmv->tgts[i].ltd_exp->exp_obd, NULL); - rc = obd_disconnect(lmv->tgts[i].ltd_exp, flags); + if (obd->obd_observer) { + /* + * Tell the observer about the new target. + */ + rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd, + OBD_NOTIFY_ACTIVE, (void *)(tgt - lmv->tgts)); if (rc) { - if (lmv->tgts[i].active) { - CERROR("Target %s disconnect error %d\n", - lmv->tgts[i].uuid.uuid, rc); - } - rc = 0; + obd_disconnect(mdc_exp); + RETURN(rc); } - - lmv_activate_target(lmv, &lmv->tgts[i], 0); - lmv->tgts[i].ltd_exp = NULL; } + tgt->ltd_active = 1; + tgt->ltd_exp = mdc_exp; + lmv->desc.ld_active_tgt_count++; + + /* + * Copy connect data, it may be used later. + */ + lmv->datas[tgt->ltd_idx] = *mdc_data; + + md_init_ea_size(tgt->ltd_exp, lmv->max_easize, + lmv->max_def_easize, lmv->max_cookiesize); + + CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n", + mdc_obd->obd_name, mdc_obd->obd_uuid.uuid, + atomic_read(&obd->obd_refcount)); + #ifdef __KERNEL__ + lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); if (lmv_proc_dir) { - lprocfs_remove(lmv_proc_dir); - } else { - CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n", - obd->obd_type->typ_name, obd->obd_name); + struct proc_dir_entry *mdc_symlink; + char name[MAX_STRING_SIZE + 1]; + + LASSERT(mdc_obd->obd_type != NULL); + LASSERT(mdc_obd->obd_type->typ_name != NULL); + name[MAX_STRING_SIZE] = '\0'; + snprintf(name, MAX_STRING_SIZE, "../../../%s/%s", + mdc_obd->obd_type->typ_name, + mdc_obd->obd_name); + mdc_symlink = proc_symlink(mdc_obd->obd_name, + lmv_proc_dir, name); + if (mdc_symlink == NULL) { + CERROR("Could not register LMV target " + "/proc/fs/lustre/%s/%s/target_obds/%s.", + obd->obd_type->typ_name, obd->obd_name, + mdc_obd->obd_name); + lprocfs_remove(&lmv_proc_dir); + lmv_proc_dir = NULL; + } } #endif - -out_local: - /* this is the case when no real connection is established by - * lmv_check_connect(). */ - if (!lmv->connected) - class_export_put(exp); - rc = class_disconnect(exp, 0); - if (lmv->refcount == 0) - lmv->connected = 0; - RETURN(rc); + RETURN(0); } -static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp, - int len, void *karg, void *uarg) +int lmv_add_target(struct obd_device *obd, struct obd_uuid *tgt_uuid) { - struct obd_device *obddev = class_exp2obd(exp); - struct lmv_obd *lmv = &obddev->u.lmv; - int i, rc = 0, set = 0; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc = 0; ENTRY; - if (lmv->desc.ld_tgt_count == 0) - RETURN(-ENOTTY); - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - int err; + CDEBUG(D_CONFIG, "Target uuid: %s.\n", tgt_uuid->uuid); - if (lmv->tgts[i].ltd_exp == NULL) - continue; + lmv_init_lock(lmv); - err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len, karg, uarg); - if (err) { - if (lmv->tgts[i].active) { - CERROR("error: iocontrol MDC %s on MDT" - "idx %d: err = %d\n", - lmv->tgts[i].uuid.uuid, i, err); - if (!rc) - rc = err; - } - } else - set = 1; + if (lmv->desc.ld_active_tgt_count >= LMV_MAX_TGT_COUNT) { + lmv_init_unlock(lmv); + CERROR("Can't add %s, LMV module compiled for %d MDCs. " + "That many MDCs already configured.\n", + tgt_uuid->uuid, LMV_MAX_TGT_COUNT); + RETURN(-EINVAL); + } + if (lmv->desc.ld_tgt_count == 0) { + struct obd_device *mdc_obd; + + mdc_obd = class_find_client_obd(tgt_uuid, LUSTRE_MDC_NAME, + &obd->obd_uuid); + if (!mdc_obd) { + lmv_init_unlock(lmv); + CERROR("Target %s not attached\n", tgt_uuid->uuid); + RETURN(-EINVAL); + } + + rc = obd_llog_init(obd, &obd->obd_olg, mdc_obd, 0, NULL, tgt_uuid); + if (rc) { + lmv_init_unlock(lmv); + CERROR("lmv failed to setup llogging subsystems\n"); + } + } + spin_lock(&lmv->lmv_lock); + tgt = lmv->tgts + lmv->desc.ld_tgt_count++; + tgt->ltd_uuid = *tgt_uuid; + spin_unlock(&lmv->lmv_lock); + + if (lmv->connected) { + rc = lmv_connect_mdc(obd, tgt); + if (rc) { + spin_lock(&lmv->lmv_lock); + lmv->desc.ld_tgt_count--; + memset(tgt, 0, sizeof(*tgt)); + spin_unlock(&lmv->lmv_lock); + } else { + int easize = sizeof(struct lmv_stripe_md) + + lmv->desc.ld_tgt_count * + sizeof(struct lu_fid); + lmv_init_ea_size(obd->obd_self_export, easize, 0, 0); + } } - if (!set && !rc) - rc = -EIO; + lmv_init_unlock(lmv); RETURN(rc); } -static int lmv_setup(struct obd_device *obd, obd_count len, void *buf) +int lmv_check_connect(struct obd_device *obd) { - int i, rc = 0; - struct lmv_desc *desc; - struct obd_uuid *uuids; - struct lmv_tgt_desc *tgts; - struct obd_device *tgt_obd; - struct lustre_cfg *lcfg = buf; - struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int i; + int rc; + int easize; ENTRY; - if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { - CERROR("LMV setup requires a descriptor\n"); - RETURN(-EINVAL); - } + if (lmv->connected) + RETURN(0); - if (LUSTRE_CFG_BUFLEN(lcfg, 2) < 1) { - CERROR("LMV setup requires an MDT UUID list\n"); - RETURN(-EINVAL); + lmv_init_lock(lmv); + if (lmv->connected) { + lmv_init_unlock(lmv); + RETURN(0); } - desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1); - if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { - CERROR("descriptor size wrong: %d > %d\n", - (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); + if (lmv->desc.ld_tgt_count == 0) { + CERROR("%s: no targets configured.\n", obd->obd_name); RETURN(-EINVAL); } - uuids = (struct obd_uuid *)lustre_cfg_buf(lcfg, 2); - if (sizeof(*uuids) * desc->ld_tgt_count != LUSTRE_CFG_BUFLEN(lcfg, 2)) { - CERROR("UUID array size wrong: %u * %u != %u\n", - sizeof(*uuids), desc->ld_tgt_count, LUSTRE_CFG_BUFLEN(lcfg, 2)); + CDEBUG(D_CONFIG, "Time to connect %s to %s\n", + lmv->cluuid.uuid, obd->obd_name); + + LASSERT(lmv->tgts != NULL); + + for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) { + rc = lmv_connect_mdc(obd, tgt); + if (rc) + GOTO(out_disc, rc); + } + + lmv_set_timeouts(obd); + class_export_put(lmv->exp); + lmv->connected = 1; + easize = lmv_get_easize(lmv); + lmv_init_ea_size(obd->obd_self_export, easize, 0, 0); + lmv_init_unlock(lmv); + RETURN(0); + + out_disc: + while (i-- > 0) { + int rc2; + --tgt; + tgt->ltd_active = 0; + if (tgt->ltd_exp) { + --lmv->desc.ld_active_tgt_count; + rc2 = obd_disconnect(tgt->ltd_exp); + if (rc2) { + CERROR("LMV target %s disconnect on " + "MDC idx %d: error %d\n", + tgt->ltd_uuid.uuid, i, rc2); + } + } + } + class_disconnect(lmv->exp); + lmv_init_unlock(lmv); + RETURN(rc); +} + +static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt) +{ +#ifdef __KERNEL__ + struct proc_dir_entry *lmv_proc_dir; +#endif + struct lmv_obd *lmv = &obd->u.lmv; + struct obd_device *mdc_obd; + int rc; + ENTRY; + + LASSERT(tgt != NULL); + LASSERT(obd != NULL); + + mdc_obd = class_exp2obd(tgt->ltd_exp); + + if (mdc_obd) + mdc_obd->obd_no_recov = obd->obd_no_recov; + +#ifdef __KERNEL__ + lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); + if (lmv_proc_dir) { + struct proc_dir_entry *mdc_symlink; + + mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name); + if (mdc_symlink) { + lprocfs_remove(&mdc_symlink); + } else { + CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n", + obd->obd_type->typ_name, obd->obd_name, + mdc_obd->obd_name); + } + } +#endif + rc = obd_fid_fini(tgt->ltd_exp); + if (rc) + CERROR("Can't finanize fids factory\n"); + + CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n", + tgt->ltd_exp->exp_obd->obd_name, + tgt->ltd_exp->exp_obd->obd_uuid.uuid); + + obd_register_observer(tgt->ltd_exp->exp_obd, NULL); + rc = obd_disconnect(tgt->ltd_exp); + if (rc) { + if (tgt->ltd_active) { + CERROR("Target %s disconnect error %d\n", + tgt->ltd_uuid.uuid, rc); + } + } + + lmv_activate_target(lmv, tgt, 0); + tgt->ltd_exp = NULL; + RETURN(0); +} + +static int lmv_disconnect(struct obd_export *exp) +{ + struct obd_device *obd = class_exp2obd(exp); +#ifdef __KERNEL__ + struct proc_dir_entry *lmv_proc_dir; +#endif + struct lmv_obd *lmv = &obd->u.lmv; + int rc; + int i; + ENTRY; + + if (!lmv->tgts) + goto out_local; + + /* + * Only disconnect the underlying layers on the final disconnect. + */ + lmv->refcount--; + if (lmv->refcount != 0) + goto out_local; + + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + if (lmv->tgts[i].ltd_exp == NULL) + continue; + lmv_disconnect_mdc(obd, &lmv->tgts[i]); + } + +#ifdef __KERNEL__ + lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); + if (lmv_proc_dir) { + lprocfs_remove(&lmv_proc_dir); + } else { + CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n", + obd->obd_type->typ_name, obd->obd_name); + } +#endif + +out_local: + /* + * This is the case when no real connection is established by + * lmv_check_connect(). + */ + if (!lmv->connected) + class_export_put(exp); + rc = class_disconnect(exp); + if (lmv->refcount == 0) + lmv->connected = 0; + RETURN(rc); +} + +static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp, + int len, void *karg, void *uarg) +{ + struct obd_device *obddev = class_exp2obd(exp); + struct lmv_obd *lmv = &obddev->u.lmv; + int i = 0; + int rc = 0; + int set = 0; + int count = lmv->desc.ld_tgt_count; + ENTRY; + + if (count == 0) + RETURN(-ENOTTY); + + switch (cmd) { + case IOC_OBD_STATFS: { + struct obd_ioctl_data *data = karg; + struct obd_device *mdc_obd; + struct obd_statfs stat_buf = {0}; + __u32 index; + + memcpy(&index, data->ioc_inlbuf2, sizeof(__u32)); + LASSERT(data->ioc_plen1 == sizeof(struct obd_statfs)); + + if ((index >= count)) + RETURN(-ENODEV); + + if (!lmv->tgts[index].ltd_active) + RETURN(-ENODATA); + + mdc_obd = class_exp2obd(lmv->tgts[index].ltd_exp); + if (!mdc_obd) + RETURN(-EINVAL); + + rc = obd_statfs(mdc_obd, &stat_buf, + cfs_time_current_64() - HZ, 0); + if (rc) + RETURN(rc); + if (copy_to_user(data->ioc_pbuf1, &stat_buf, data->ioc_plen1)) + RETURN(-EFAULT); + if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd), + data->ioc_plen2)) + RETURN(-EFAULT); + break; + } + case OBD_IOC_QUOTACTL: { + struct if_quotactl *qctl = karg; + struct lmv_tgt_desc *tgt = NULL; + struct obd_quotactl *oqctl; + + if (qctl->qc_valid == QC_MDTIDX) { + if (qctl->qc_idx < 0 || count <= qctl->qc_idx) + RETURN(-EINVAL); + + tgt = &lmv->tgts[qctl->qc_idx]; + if (!tgt->ltd_exp) + RETURN(-EINVAL); + } else if (qctl->qc_valid == QC_UUID) { + for (i = 0; i < count; i++) { + tgt = &lmv->tgts[i]; + if (!obd_uuid_equals(&tgt->ltd_uuid, + &qctl->obd_uuid)) + continue; + + if (tgt->ltd_exp == NULL) + RETURN(-EINVAL); + + break; + } + } else { + RETURN(-EINVAL); + } + + if (i >= count) + RETURN(-EAGAIN); + + LASSERT(tgt && tgt->ltd_exp); + OBD_ALLOC_PTR(oqctl); + if (!oqctl) + RETURN(-ENOMEM); + + QCTL_COPY(oqctl, qctl); + rc = obd_quotactl(tgt->ltd_exp, oqctl); + if (rc == 0) { + QCTL_COPY(qctl, oqctl); + qctl->qc_valid = QC_MDTIDX; + qctl->obd_uuid = tgt->ltd_uuid; + } + OBD_FREE_PTR(oqctl); + break; + } + case OBD_IOC_CHANGELOG_CLEAR: { + struct ioc_changelog_clear *icc = karg; + + if (icc->icc_mdtindex >= count) + RETURN(-ENODEV); + + rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex].ltd_exp, + sizeof(*icc), icc, NULL); + break; + } + + default : { + for (i = 0; i < count; i++) { + int err; + + if (lmv->tgts[i].ltd_exp == NULL) + continue; + + err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len, + karg, uarg); + if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) { + RETURN(err); + } else if (err) { + if (lmv->tgts[i].ltd_active) { + CERROR("error: iocontrol MDC %s on MDT" + "idx %d cmd %x: err = %d\n", + lmv->tgts[i].ltd_uuid.uuid, + i, cmd, err); + if (!rc) + rc = err; + } + } else + set = 1; + } + if (!set && !rc) + rc = -EIO; + } + } + RETURN(rc); +} + +static int lmv_all_chars_policy(int count, const char *name, + int len) +{ + unsigned int c = 0; + + while (len > 0) + c += name[--len]; + c = c % count; + return c; +} + +static int lmv_nid_policy(struct lmv_obd *lmv) +{ + struct obd_import *imp; + __u32 id; + + /* + * XXX: To get nid we assume that underlying obd device is mdc. + */ + imp = class_exp2cliimp(lmv->tgts[0].ltd_exp); + id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32); + return id % lmv->desc.ld_tgt_count; +} + +static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data, + placement_policy_t placement) +{ + switch (placement) { + case PLACEMENT_CHAR_POLICY: + return lmv_all_chars_policy(lmv->desc.ld_tgt_count, + op_data->op_name, + op_data->op_namelen); + case PLACEMENT_NID_POLICY: + return lmv_nid_policy(lmv); + + default: + break; + } + + CERROR("Unsupported placement policy %x\n", placement); + return -EINVAL; +} + +/** + * This is _inode_ placement policy function (not name). + */ +static int lmv_placement_policy(struct obd_device *obd, + struct md_op_data *op_data, + mdsno_t *mds) +{ + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_object *obj; + int rc; + ENTRY; + + LASSERT(mds != NULL); + + if (lmv->desc.ld_tgt_count == 1) { + *mds = 0; + RETURN(0); + } + + /* + * Allocate new fid on target according to operation type and parent + * home mds. + */ + obj = lmv_object_find(obd, &op_data->op_fid1); + if (obj != NULL || op_data->op_name == NULL || + op_data->op_opc != LUSTRE_OPC_MKDIR) { + /* + * Allocate fid for non-dir or for null name or for case parent + * dir is split. + */ + if (obj) { + lmv_object_put(obj); + + /* + * If we have this flag turned on, and we see that + * parent dir is split, this means, that caller did not + * notice split yet. This is race and we would like to + * let caller know that. + */ + if (op_data->op_bias & MDS_CHECK_SPLIT) + RETURN(-ERESTART); + } + + /* + * Allocate new fid on same mds where parent fid is located and + * where operation will be sent. In case of split dir, ->op_fid1 + * and ->op_mds here will contain fid and mds of slave directory + * object (assigned by caller). + */ + *mds = op_data->op_mds; + rc = 0; + } else { + /* + * Parent directory is not split and we want to create a + * directory in it. Let's calculate where to place it according + * to operation data @op_data. + */ + *mds = lmv_choose_mds(lmv, op_data, lmv->lmv_placement); + rc = 0; + } + + if (rc) { + CERROR("Can't choose MDS, err = %d\n", rc); + } else { + LASSERT(*mds < lmv->desc.ld_tgt_count); + } + + RETURN(rc); +} + +int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, + mdsno_t mds) +{ + struct lmv_tgt_desc *tgt; + int rc; + ENTRY; + + tgt = lmv_get_target(lmv, mds); + + /* + * New seq alloc and FLD setup should be atomic. Otherwise we may find + * on server that seq in new allocated fid is not yet known. + */ + down(&tgt->ltd_fid_sem); + + if (!tgt->ltd_active) + GOTO(out, rc = -ENODEV); + + /* + * Asking underlaying tgt layer to allocate new fid. + */ + rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL); + if (rc > 0) { + LASSERT(fid_is_sane(fid)); + rc = 0; + } + + EXIT; +out: + up(&tgt->ltd_fid_sem); + return rc; +} + +int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid, + struct md_op_data *op_data) +{ + struct obd_device *obd = class_exp2obd(exp); + struct lmv_obd *lmv = &obd->u.lmv; + mdsno_t mds; + int rc; + ENTRY; + + LASSERT(op_data != NULL); + LASSERT(fid != NULL); + + rc = lmv_placement_policy(obd, op_data, &mds); + if (rc) { + CERROR("Can't get target for allocating fid, " + "rc %d\n", rc); + RETURN(rc); + } + + rc = __lmv_fid_alloc(lmv, fid, mds); + if (rc) { + CERROR("Can't alloc new fid, rc %d\n", rc); + RETURN(rc); + } + + RETURN(rc); +} + +static int lmv_fid_delete(struct obd_export *exp, const struct lu_fid *fid) +{ + ENTRY; + LASSERT(exp != NULL && fid != NULL); + if (lmv_object_delete(exp, fid)) { + CDEBUG(D_INODE, "Object "DFID" is destroyed.\n", + PFID(fid)); + } + RETURN(0); +} + +static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg) +{ + struct lmv_obd *lmv = &obd->u.lmv; + struct lprocfs_static_vars lvars; + struct lmv_desc *desc; + int rc; + int i = 0; + ENTRY; + + if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { + CERROR("LMV setup requires a descriptor\n"); + RETURN(-EINVAL); + } + + desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1); + if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { + CERROR("Lmv descriptor size wrong: %d > %d\n", + (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); RETURN(-EINVAL); } - lmv->tgts_size = sizeof(struct lmv_tgt_desc) * desc->ld_tgt_count; + lmv->tgts_size = LMV_MAX_TGT_COUNT * sizeof(struct lmv_tgt_desc); + OBD_ALLOC(lmv->tgts, lmv->tgts_size); - if (lmv->tgts == NULL) { - CERROR("Out of memory\n"); + if (lmv->tgts == NULL) RETURN(-ENOMEM); + + for (i = 0; i < LMV_MAX_TGT_COUNT; i++) { + sema_init(&lmv->tgts[i].ltd_fid_sem, 1); + lmv->tgts[i].ltd_idx = i; } - lmv->desc = *desc; - spin_lock_init(&lmv->lmv_lock); - - for (i = 0, tgts = lmv->tgts; i < desc->ld_tgt_count; i++, tgts++) - tgts->uuid = uuids[i]; - + lmv->datas_size = LMV_MAX_TGT_COUNT * sizeof(struct obd_connect_data); + + OBD_ALLOC(lmv->datas, lmv->datas_size); + if (lmv->datas == NULL) + GOTO(out_free_tgts, rc = -ENOMEM); + + obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid); + lmv->desc.ld_tgt_count = 0; + lmv->desc.ld_active_tgt_count = 0; lmv->max_cookiesize = 0; + lmv->max_def_easize = 0; + lmv->max_easize = 0; + lmv->lmv_placement = PLACEMENT_CHAR_POLICY; - lmv->max_easize = sizeof(struct lustre_id) * - desc->ld_tgt_count + sizeof(struct mea); - - rc = lmv_setup_mgr(obd); + spin_lock_init(&lmv->lmv_lock); + sema_init(&lmv->init_sem, 1); + + rc = lmv_object_setup(obd); if (rc) { - CERROR("Can't setup LMV object manager, " - "error %d.\n", rc); - OBD_FREE(lmv->tgts, lmv->tgts_size); + CERROR("Can't setup LMV object manager, error %d.\n", rc); + GOTO(out_free_datas, rc); } - tgt_obd = class_find_client_obd(&lmv->tgts->uuid, OBD_MDC_DEVICENAME, - &obd->obd_uuid); - if (!tgt_obd) { - CERROR("Target %s not attached\n", lmv->tgts->uuid.uuid); - RETURN(-EINVAL); + lprocfs_lmv_init_vars(&lvars); + lprocfs_obd_setup(obd, lvars.obd_vars); +#ifdef LPROCFS + { + rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd_status", + 0444, &lmv_proc_target_fops, obd); + if (rc) + CWARN("Error adding target_obd_stats file (%d)\n", rc); + } +#endif + rc = fld_client_init(&lmv->lmv_fld, obd->obd_name, + LUSTRE_CLI_FLD_HASH_DHT); + if (rc) { + CERROR("Can't init FLD, err %d\n", rc); + GOTO(out_free_datas, rc); } - RETURN(rc); + RETURN(0); + +out_free_datas: + OBD_FREE(lmv->datas, lmv->datas_size); + lmv->datas = NULL; +out_free_tgts: + OBD_FREE(lmv->tgts, lmv->tgts_size); + lmv->tgts = NULL; + return rc; } -static int lmv_cleanup(struct obd_device *obd, int flags) +static int lmv_cleanup(struct obd_device *obd) { - struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_obd *lmv = &obd->u.lmv; ENTRY; - lmv_cleanup_mgr(obd); + fld_client_fini(&lmv->lmv_fld); + lprocfs_obd_cleanup(obd); + lmv_object_cleanup(obd); + OBD_FREE(lmv->datas, lmv->datas_size); OBD_FREE(lmv->tgts, lmv->tgts_size); - + RETURN(0); } +static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf) +{ + struct lustre_cfg *lcfg = buf; + struct obd_uuid tgt_uuid; + int rc; + ENTRY; + + switch(lcfg->lcfg_command) { + case LCFG_ADD_MDC: + if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(tgt_uuid.uuid)) + GOTO(out, rc = -EINVAL); + + obd_str2uuid(&tgt_uuid, lustre_cfg_string(lcfg, 1)); + rc = lmv_add_target(obd, &tgt_uuid); + GOTO(out, rc); + default: { + CERROR("Unknown command: %d\n", lcfg->lcfg_command); + GOTO(out, rc = -EINVAL); + } + } +out: + RETURN(rc); +} + static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs, - unsigned long max_age) + __u64 max_age, __u32 flags) { - struct lmv_obd *lmv = &obd->u.lmv; - struct obd_statfs *temp; - int rc = 0, i; + struct lmv_obd *lmv = &obd->u.lmv; + struct obd_statfs *temp; + int rc = 0; + int i; ENTRY; - + rc = lmv_check_connect(obd); if (rc) RETURN(rc); @@ -637,12 +1172,13 @@ static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs, OBD_ALLOC(temp, sizeof(*temp)); if (temp == NULL) RETURN(-ENOMEM); - + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i].ltd_exp == NULL) continue; - rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, temp, max_age); + rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, temp, + max_age, flags); if (rc) { CERROR("can't stat MDS #%d (%s), error %d\n", i, lmv->tgts[i].ltd_exp->exp_obd->obd_name, @@ -650,7 +1186,7 @@ static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs, GOTO(out_free_temp, rc); } if (i == 0) { - memcpy(osfs, temp, sizeof(*temp)); + *osfs = *temp; } else { osfs->os_bavail += temp->os_bavail; osfs->os_blocks += temp->os_blocks; @@ -665,251 +1201,244 @@ out_free_temp: return rc; } -static int lmv_getstatus(struct obd_export *exp, struct lustre_id *id) +static int lmv_getstatus(struct obd_export *exp, + struct lu_fid *fid, + struct obd_capa **pc) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); - rc = md_getstatus(lmv->tgts[0].ltd_exp, id); - id_group(id) = 0; - + rc = md_getstatus(lmv->tgts[0].ltd_exp, fid, pc); RETURN(rc); } -static int lmv_getattr(struct obd_export *exp, struct lustre_id *id, - __u64 valid, const char *ea_name, int ea_namelen, - unsigned int ea_size, struct ptlrpc_request **request) +static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid, + struct obd_capa *oc, obd_valid valid, const char *name, + const char *input, int input_size, int output_size, + int flags, struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc, i = id_group(id); - struct lmv_obj *obj; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); - LASSERT(i < lmv->desc.ld_tgt_count); + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_getxattr(tgt->ltd_exp, fid, oc, valid, name, input, + input_size, output_size, flags, request); + RETURN(rc); +} - rc = md_getattr(lmv->tgts[i].ltd_exp, id, valid, - ea_name, ea_namelen, ea_size, request); +static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid, + struct obd_capa *oc, obd_valid valid, const char *name, + const char *input, int input_size, int output_size, + int flags, __u32 suppgid, + struct ptlrpc_request **request) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; + ENTRY; + + rc = lmv_check_connect(obd); if (rc) RETURN(rc); - - obj = lmv_grab_obj(obd, id); - - CDEBUG(D_OTHER, "GETATTR for "DLID4" %s\n", - OLID4(id), obj ? "(splitted)" : ""); + + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_setxattr(tgt->ltd_exp, fid, oc, valid, name, input, + input_size, output_size, flags, suppgid, + request); + + RETURN(rc); +} + +static int lmv_getattr(struct obd_export *exp, const struct lu_fid *fid, + struct obd_capa *oc, obd_valid valid, int ea_size, + struct ptlrpc_request **request) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + int rc; + int i; + ENTRY; + + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); + + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_getattr(tgt->ltd_exp, fid, oc, valid, ea_size, request); + if (rc) + RETURN(rc); + + obj = lmv_object_find_lock(obd, fid); + + CDEBUG(D_INODE, "GETATTR for "DFID" %s\n", PFID(fid), + obj ? "(split)" : ""); /* - * if object is splitted, then we loop over all the slaves and gather - * size attribute. In ideal world we would have to gather also mds field - * from all slaves, as object is spread over the cluster and this is + * If object is split, then we loop over all the slaves and gather size + * attribute. In ideal world we would have to gather also mds field from + * all slaves, as object is spread over the cluster and this is * definitely interesting information and it is not good to loss it, * but... */ if (obj) { - struct mds_body *body; + struct mdt_body *body; if (*request == NULL) { - lmv_put_obj(obj); + lmv_object_put(obj); RETURN(rc); } - - body = lustre_msg_buf((*request)->rq_repmsg, 0, - sizeof(*body)); - LASSERT(body != NULL); - lmv_lock_obj(obj); - - for (i = 0; i < obj->objcount; i++) { + body = req_capsule_server_get(&(*request)->rq_pill, + &RMF_MDT_BODY); + LASSERT(body != NULL); + for (i = 0; i < obj->lo_objcount; i++) { if (lmv->tgts[i].ltd_exp == NULL) { CWARN("%s: NULL export for %d\n", obd->obd_name, i); continue; } - /* skip master obj. */ - if (id_equal_fid(&obj->id, &obj->objs[i].id)) + /* + * Skip master object. + */ + if (lu_fid_eq(&obj->lo_fid, &obj->lo_stripes[i].ls_fid)) continue; - - body->size += obj->objs[i].size; + + body->size += obj->lo_stripes[i].ls_size; } - lmv_unlock_obj(obj); - lmv_put_obj(obj); + lmv_object_put_unlock(obj); } - - RETURN(rc); -} -static int lmv_access_check(struct obd_export *exp, - struct lustre_id *id, - struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc, i = id_group(id); - ENTRY; - - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - - LASSERT(i < lmv->desc.ld_tgt_count); - rc = md_access_check(lmv->tgts[i].ltd_exp, id, request); - RETURN(rc); -} - -static int lmv_change_cbdata(struct obd_export *exp, - struct lustre_id *id, - ldlm_iterator_t it, - void *data) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc = 0; - ENTRY; - - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - - CDEBUG(D_OTHER, "CBDATA for "DLID4"\n", OLID4(id)); - LASSERT(id_group(id) < lmv->desc.ld_tgt_count); - - rc = md_change_cbdata(lmv->tgts[id_group(id)].ltd_exp, - id, it, data); - RETURN(rc); } -static int lmv_change_cbdata_name(struct obd_export *exp, - struct lustre_id *pid, - char *name, int len, - struct lustre_id *cid, - ldlm_iterator_t it, - void *data) +static int lmv_change_cbdata(struct obd_export *exp, const struct lu_fid *fid, + ldlm_iterator_t it, void *data) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lustre_id rcid = *cid; - struct lmv_obj *obj; - int rc = 0, mds; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int i; + int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); - LASSERT(id_group(pid) < lmv->desc.ld_tgt_count); - LASSERT(id_group(cid) < lmv->desc.ld_tgt_count); - - CDEBUG(D_OTHER, "CBDATA for "DLID4":%*s -> "DLID4"\n", - OLID4(pid), len, name, OLID4(cid)); + CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid)); - /* this is default mds for directory name belongs to. */ - mds = id_group(pid); - obj = lmv_grab_obj(obd, pid); - if (obj) { - /* directory is splitted. look for right mds for this name. */ - mds = raw_name2idx(obj->hashtype, obj->objcount, name, len); - rcid = obj->objs[mds].id; - mds = id_group(&rcid); - lmv_put_obj(obj); - } - rc = md_change_cbdata(lmv->tgts[mds].ltd_exp, &rcid, it, data); - RETURN(rc); + /* + * With CMD every object can have two locks in different namespaces: + * lookup lock in space of mds storing direntry and update/open lock in + * space of mds storing inode. + */ + for (i = 0; i < lmv->desc.ld_tgt_count; i++) + md_change_cbdata(lmv->tgts[i].ltd_exp, fid, it, data); + + RETURN(0); } -static int lmv_valid_attrs(struct obd_export *exp, struct lustre_id *id) +static int lmv_close(struct obd_export *exp, struct md_op_data *op_data, + struct md_open_data *mod, struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc = 0; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); - CDEBUG(D_OTHER, "validate "DLID4"\n", OLID4(id)); - LASSERT(id_group(id) < lmv->desc.ld_tgt_count); - rc = md_valid_attrs(lmv->tgts[id_group(id)].ltd_exp, id); - RETURN(rc); -} - -static int lmv_close(struct obd_export *exp, struct obdo *obdo, - struct obd_client_handle *och, - struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc, i = obdo->o_mds; - ENTRY; - - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); + tgt = lmv_find_target(lmv, &op_data->op_fid1); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); - LASSERT(i < lmv->desc.ld_tgt_count); - CDEBUG(D_OTHER, "CLOSE %lu/%lu/%lu\n", (unsigned long)obdo->o_mds, - (unsigned long)obdo->o_id, (unsigned long)obdo->o_generation); - rc = md_close(lmv->tgts[i].ltd_exp, obdo, och, request); + CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1)); + rc = md_close(tgt->ltd_exp, op_data, mod, request); RETURN(rc); } -int lmv_get_mea_and_update_object(struct obd_export *exp, - struct lustre_id *id) +/** + * Called in the case MDS returns -ERESTART on create on open, what means that + * directory is split and its LMV presentation object has to be updated. + */ +int lmv_handle_split(struct obd_export *exp, const struct lu_fid *fid) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct ptlrpc_request *req = NULL; - struct lmv_obj *obj; - struct lustre_md md; - int mealen, rc; - __u64 valid; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct ptlrpc_request *req = NULL; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + struct lustre_md md; + int mealen; + int rc; + __u64 valid; ENTRY; md.mea = NULL; - mealen = MEA_SIZE_LMV(lmv); - + mealen = lmv_get_easize(lmv); + valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA | OBD_MD_MEA; - /* time to update mea of parent id */ - rc = md_getattr(lmv->tgts[id_group(id)].ltd_exp, - id, valid, NULL, 0, mealen, &req); + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + /* + * Time to update mea of parent fid. + */ + rc = md_getattr(tgt->ltd_exp, fid, NULL, valid, mealen, &req); if (rc) { CERROR("md_getattr() failed, error %d\n", rc); GOTO(cleanup, rc); } - rc = mdc_req2lustre_md(exp, req, 0, NULL, &md); + rc = md_get_lustre_md(tgt->ltd_exp, req, NULL, exp, &md); if (rc) { - CERROR("mdc_req2lustre_md() failed, error %d\n", rc); + CERROR("md_get_lustre_md() failed, error %d\n", rc); GOTO(cleanup, rc); } if (md.mea == NULL) GOTO(cleanup, rc = -ENODATA); - obj = lmv_create_obj(exp, id, md.mea); + obj = lmv_object_create(exp, fid, md.mea); if (IS_ERR(obj)) rc = PTR_ERR(obj); else - lmv_put_obj(obj); - - obd_free_memmd(exp, (struct lov_stripe_md **)&md.mea); + lmv_object_put(obj); + obd_free_memmd(exp, (void *)&md.mea); EXIT; cleanup: if (req) @@ -917,15 +1446,18 @@ cleanup: return rc; } -int lmv_create(struct obd_export *exp, struct mdc_op_data *op_data, +int lmv_create(struct obd_export *exp, struct md_op_data *op_data, const void *data, int datalen, int mode, __u32 uid, - __u32 gid, __u64 rdev, struct ptlrpc_request **request) + __u32 gid, cfs_cap_t cap_effective, __u64 rdev, + struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct mds_body *body; - struct lmv_obj *obj; - int rc, mds, loop = 0; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + int rc; + int loop = 0; + int sidx; ENTRY; rc = lmv_check_connect(obd); @@ -935,452 +1467,703 @@ int lmv_create(struct obd_export *exp, struct mdc_op_data *op_data, if (!lmv->desc.ld_active_tgt_count) RETURN(-EIO); repeat: - LASSERT(++loop <= 2); - obj = lmv_grab_obj(obd, &op_data->id1); + ++loop; + LASSERT(loop <= 2); + + obj = lmv_object_find(obd, &op_data->op_fid1); if (obj) { - mds = raw_name2idx(obj->hashtype, obj->objcount, - op_data->name, op_data->namelen); - op_data->id1 = obj->objs[mds].id; - lmv_put_obj(obj); - } - - CDEBUG(D_OTHER, "CREATE '%*s' on "DLID4"\n", op_data->namelen, - op_data->name, OLID4(&op_data->id1)); - - rc = md_create(lmv->tgts[id_group(&op_data->id1)].ltd_exp, - op_data, data, datalen, mode, uid, gid, rdev, - request); + sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount, + op_data->op_name, op_data->op_namelen); + op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid; + op_data->op_bias &= ~MDS_CHECK_SPLIT; + op_data->op_mds = obj->lo_stripes[sidx].ls_mds; + tgt = lmv_get_target(lmv, op_data->op_mds); + lmv_object_put(obj); + } else { + tgt = lmv_find_target(lmv, &op_data->op_fid1); + op_data->op_bias |= MDS_CHECK_SPLIT; + op_data->op_mds = tgt->ltd_idx; + } + + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data); + if (rc == -ERESTART) + goto repeat; + else if (rc) + RETURN(rc); + + CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n", + op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1), + op_data->op_mds); + + op_data->op_flags |= MF_MDC_CANCEL_FID1; + rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid, + cap_effective, rdev, request); if (rc == 0) { if (*request == NULL) RETURN(rc); - - body = lustre_msg_buf((*request)->rq_repmsg, 0, - sizeof(*body)); - if (body == NULL) - RETURN(-ENOMEM); - - CDEBUG(D_OTHER, "created. "DLID4"\n", OLID4(&op_data->id1)); + CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2)); } else if (rc == -ERESTART) { + LASSERT(*request != NULL); + DEBUG_REQ(D_WARNING|D_RPCTRACE, *request, + "Got -ERESTART during create!\n"); + ptlrpc_req_finished(*request); + *request = NULL; + /* - * directory got splitted. time to update local object and - * repeat the request with proper MDS. + * Directory got split. Time to update local object and repeat + * the request with proper MDS. */ - rc = lmv_get_mea_and_update_object(exp, &op_data->id1); + rc = lmv_handle_split(exp, &op_data->op_fid1); if (rc == 0) { - ptlrpc_req_finished(*request); + rc = lmv_allocate_slaves(obd, &op_data->op_fid1, + op_data, &op_data->op_fid2); + if (rc) + RETURN(rc); goto repeat; } } RETURN(rc); } -static int lmv_done_writing(struct obd_export *exp, struct obdo *obdo) +static int lmv_done_writing(struct obd_export *exp, + struct md_op_data *op_data, + struct md_open_data *mod) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; ENTRY; - + rc = lmv_check_connect(obd); if (rc) RETURN(rc); - /* FIXME: choose right MDC here */ - CWARN("this method isn't implemented yet\n"); - rc = md_done_writing(lmv->tgts[0].ltd_exp, obdo); + tgt = lmv_find_target(lmv, &op_data->op_fid1); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_done_writing(tgt->ltd_exp, op_data, mod); RETURN(rc); } static int -lmv_enqueue_slaves(struct obd_export *exp, int locktype, - struct lookup_intent *it, int lockmode, - struct mdc_op_data *data, struct lustre_handle *lockh, - void *lmm, int lmmsize, ldlm_completion_callback cb_compl, - ldlm_blocking_callback cb_blocking, void *cb_data) +lmv_enqueue_slaves(struct obd_export *exp, struct ldlm_enqueue_info *einfo, + struct lookup_intent *it, struct md_op_data *op_data, + struct lustre_handle *lockh, void *lmm, int lmmsize) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct mea *mea = data->mea1; - struct mdc_op_data *data2; - int i, rc, mds; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_stripe_md *mea = op_data->op_mea1; + struct md_op_data *op_data2; + struct lmv_tgt_desc *tgt; + int i; + int rc = 0; ENTRY; - OBD_ALLOC(data2, sizeof(*data2)); - if (data2 == NULL) + OBD_ALLOC_PTR(op_data2); + if (op_data2 == NULL) RETURN(-ENOMEM); - + LASSERT(mea != NULL); for (i = 0; i < mea->mea_count; i++) { - memset(data2, 0, sizeof(*data2)); - data2->id1 = mea->mea_ids[i]; - mds = id_group(&data2->id1); - - if (lmv->tgts[mds].ltd_exp == NULL) + memset(op_data2, 0, sizeof(*op_data2)); + op_data2->op_fid1 = mea->mea_ids[i]; + op_data2->op_bias = 0; + + tgt = lmv_find_target(lmv, &op_data2->op_fid1); + if (IS_ERR(tgt)) + GOTO(cleanup, rc = PTR_ERR(tgt)); + + if (tgt->ltd_exp == NULL) continue; - rc = md_enqueue(lmv->tgts[mds].ltd_exp, locktype, it, - lockmode, data2, lockh + i, lmm, lmmsize, - cb_compl, cb_blocking, cb_data); - - CDEBUG(D_OTHER, "take lock on slave "DLID4" -> %d/%d\n", - OLID4(&mea->mea_ids[i]), rc, LUSTRE_IT(it)->it_status); + rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data2, + lockh + i, lmm, lmmsize, NULL, 0); + + CDEBUG(D_INODE, "Take lock on slave "DFID" -> %d/%d\n", + PFID(&mea->mea_ids[i]), rc, it->d.lustre.it_status); + if (rc) GOTO(cleanup, rc); - if (LUSTRE_IT(it)->it_data) { + + if (it->d.lustre.it_data) { struct ptlrpc_request *req; - req = (struct ptlrpc_request *) LUSTRE_IT(it)->it_data; + req = (struct ptlrpc_request *)it->d.lustre.it_data; ptlrpc_req_finished(req); } - - if (LUSTRE_IT(it)->it_status) - GOTO(cleanup, rc = LUSTRE_IT(it)->it_status); + + if (it->d.lustre.it_status) + GOTO(cleanup, rc = it->d.lustre.it_status); } - - OBD_FREE(data2, sizeof(*data2)); - RETURN(0); + + EXIT; cleanup: - OBD_FREE(data2, sizeof(*data2)); - - /* drop all taken locks */ - while (--i >= 0) { - if (lockh[i].cookie) - ldlm_lock_decref(lockh + i, lockmode); - lockh[i].cookie = 0; + OBD_FREE_PTR(op_data2); + + if (rc != 0) { + /* + * Drop all taken locks. + */ + while (--i >= 0) { + if (lockh[i].cookie) + ldlm_lock_decref(lockh + i, einfo->ei_mode); + lockh[i].cookie = 0; + } } return rc; } static int -lmv_enqueue_remote(struct obd_export *exp, int lock_type, - struct lookup_intent *it, int lock_mode, - struct mdc_op_data *data, struct lustre_handle *lockh, - void *lmm, int lmmsize, ldlm_completion_callback cb_compl, - ldlm_blocking_callback cb_blocking, void *cb_data) +lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo, + struct lookup_intent *it, struct md_op_data *op_data, + struct lustre_handle *lockh, void *lmm, int lmmsize, + int extra_lock_flags) { - struct ptlrpc_request *req = LUSTRE_IT(it)->it_data; - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lustre_handle plock; - struct mdc_op_data rdata; - struct mds_body *body = NULL; - int rc = 0, pmode; + struct ptlrpc_request *req = it->d.lustre.it_data; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lustre_handle plock; + struct lmv_tgt_desc *tgt; + struct md_op_data *rdata; + struct lu_fid fid1; + struct mdt_body *body; + int rc = 0; + int pmode; ENTRY; - body = lustre_msg_buf(req->rq_repmsg, 1, sizeof(*body)); + body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); LASSERT(body != NULL); if (!(body->valid & OBD_MD_MDS)) RETURN(0); - CDEBUG(D_OTHER, "ENQUEUE '%s' on "DLID4" -> "DLID4"\n", - LL_IT2STR(it), OLID4(&data->id1), OLID4(&body->id1)); + CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n", + LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1)); - /* we got LOOKUP lock, but we really need attrs */ - pmode = LUSTRE_IT(it)->it_lock_mode; + /* + * We got LOOKUP lock, but we really need attrs. + */ + pmode = it->d.lustre.it_lock_mode; LASSERT(pmode != 0); memcpy(&plock, lockh, sizeof(plock)); - LUSTRE_IT(it)->it_lock_mode = 0; - LUSTRE_IT(it)->it_data = NULL; - LASSERT((body->valid & OBD_MD_FID) != 0); - - memcpy(&rdata, data, sizeof(rdata)); - rdata.id1 = body->id1; - rdata.name = NULL; - rdata.namelen = 0; + it->d.lustre.it_lock_mode = 0; + it->d.lustre.it_data = NULL; + fid1 = body->fid1; - LUSTRE_IT(it)->it_disposition &= ~DISP_ENQ_COMPLETE; + it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE; ptlrpc_req_finished(req); - rc = md_enqueue(lmv->tgts[id_group(&rdata.id1)].ltd_exp, - lock_type, it, lock_mode, &rdata, lockh, lmm, - lmmsize, cb_compl, cb_blocking, cb_data); + tgt = lmv_find_target(lmv, &fid1); + if (IS_ERR(tgt)) + GOTO(out, rc = PTR_ERR(tgt)); + + OBD_ALLOC_PTR(rdata); + if (rdata == NULL) + GOTO(out, rc = -ENOMEM); + + rdata->op_fid1 = fid1; + rdata->op_bias = MDS_CROSS_REF; + + rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh, + lmm, lmmsize, NULL, extra_lock_flags); + OBD_FREE_PTR(rdata); + EXIT; +out: ldlm_lock_decref(&plock, pmode); - RETURN(rc); + return rc; } static int -lmv_enqueue(struct obd_export *exp, int lock_type, - struct lookup_intent *it, int lock_mode, - struct mdc_op_data *data, struct lustre_handle *lockh, - void *lmm, int lmmsize, ldlm_completion_callback cb_compl, - ldlm_blocking_callback cb_blocking, void *cb_data) +lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo, + struct lookup_intent *it, struct md_op_data *op_data, + struct lustre_handle *lockh, void *lmm, int lmmsize, + struct ptlrpc_request **req, int extra_lock_flags) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_obj *obj; - int rc, mds; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + int sidx; + int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); - if (data->mea1 && it->it_op == IT_UNLINK) { - rc = lmv_enqueue_slaves(exp, lock_type, it, lock_mode, - data, lockh, lmm, lmmsize, - cb_compl, cb_blocking, cb_data); - RETURN(rc); + CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n", + LL_IT2STR(it), PFID(&op_data->op_fid1)); + + if (op_data->op_mea1 && it && it->it_op == IT_UNLINK) { + rc = lmv_enqueue_slaves(exp, einfo, it, op_data, + lockh, lmm, lmmsize); + RETURN(rc); + } + + obj = lmv_object_find(obd, &op_data->op_fid1); + if (obj && op_data->op_namelen) { + sidx = raw_name2idx(obj->lo_hashtype, + obj->lo_objcount, + (char *)op_data->op_name, + op_data->op_namelen); + op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid; + tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds); + } else { + tgt = lmv_find_target(lmv, &op_data->op_fid1); } + if (obj) + lmv_object_put(obj); - if (data->namelen) { - obj = lmv_grab_obj(obd, &data->id1); - if (obj) { - /* directory is splitted. look for right mds for this - * name */ - mds = raw_name2idx(obj->hashtype, obj->objcount, - (char *)data->name, data->namelen); - data->id1 = obj->objs[mds].id; - lmv_put_obj(obj); - } + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n", + LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx); + + rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh, + lmm, lmmsize, req, extra_lock_flags); + + if (rc == 0 && it && it->it_op == IT_OPEN) { + rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh, + lmm, lmmsize, extra_lock_flags); } - CDEBUG(D_OTHER, "ENQUEUE '%s' on "DLID4"\n", LL_IT2STR(it), - OLID4(&data->id1)); - - rc = md_enqueue(lmv->tgts[id_group(&data->id1)].ltd_exp, - lock_type, it, lock_mode, data, lockh, lmm, - lmmsize, cb_compl, cb_blocking, cb_data); - if (rc == 0 && it->it_op == IT_OPEN) - rc = lmv_enqueue_remote(exp, lock_type, it, lock_mode, - data, lockh, lmm, lmmsize, - cb_compl, cb_blocking, cb_data); RETURN(rc); } static int -lmv_getattr_lock(struct obd_export *exp, struct lustre_id *id, - char *filename, int namelen, __u64 valid, - unsigned int ea_size, struct ptlrpc_request **request) +lmv_getattr_name(struct obd_export *exp, const struct lu_fid *fid, + struct obd_capa *oc, const char *name, int namelen, + obd_valid valid, int ea_size, __u32 suppgid, + struct ptlrpc_request **request) { - int rc, mds = id_group(id), loop = 0; - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lustre_id rid = *id; - struct mds_body *body; - struct lmv_obj *obj; + struct ptlrpc_request *req = NULL; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lu_fid rid = *fid; + struct lmv_tgt_desc *tgt; + struct mdt_body *body; + struct lmv_object *obj; + int rc; + int loop = 0; + int sidx; ENTRY; - + rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); + if (rc) + RETURN(rc); + repeat: - LASSERT(++loop <= 2); - obj = lmv_grab_obj(obd, id); + ++loop; + LASSERT(loop <= 2); + obj = lmv_object_find(obd, &rid); if (obj) { - /* directory is splitted. look for right mds for this name */ - mds = raw_name2idx(obj->hashtype, obj->objcount, - filename, namelen - 1); - rid = obj->objs[mds].id; - lmv_put_obj(obj); - } - - CDEBUG(D_OTHER, "getattr_lock for %*s on "DLID4" -> "DLID4"\n", - namelen, filename, OLID4(id), OLID4(&rid)); - - rc = md_getattr_lock(lmv->tgts[id_group(&rid)].ltd_exp, - &rid, filename, namelen, - valid == OBD_MD_FLID ? valid : valid | OBD_MD_FID, - ea_size, request); + sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount, + name, namelen - 1); + rid = obj->lo_stripes[sidx].ls_fid; + tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds); + valid &= ~OBD_MD_FLCKSPLIT; + lmv_object_put(obj); + } else { + tgt = lmv_find_target(lmv, &rid); + valid |= OBD_MD_FLCKSPLIT; + } + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" - "DFID" -> mds #%d\n", + namelen, name, PFID(fid), PFID(&rid), tgt->ltd_idx); + + rc = md_getattr_name(tgt->ltd_exp, &rid, oc, name, namelen, valid, + ea_size, suppgid, request); if (rc == 0) { - /* - * this could be cross-node reference. in this case all we have - * right now is lustre_id triple. we'd like to find other - * attributes. - */ - body = lustre_msg_buf((*request)->rq_repmsg, 0, sizeof(*body)); + body = req_capsule_server_get(&(*request)->rq_pill, + &RMF_MDT_BODY); LASSERT(body != NULL); - LASSERT((body->valid & OBD_MD_FID) != 0 - || body->valid == OBD_MD_FLID); if (body->valid & OBD_MD_MDS) { - struct ptlrpc_request *req = NULL; - - rid = body->id1; - CDEBUG(D_OTHER, "request attrs for "DLID4"\n", OLID4(&rid)); + rid = body->fid1; + CDEBUG(D_INODE, "Request attrs for "DFID"\n", + PFID(&rid)); + + tgt = lmv_find_target(lmv, &rid); + if (IS_ERR(tgt)) { + ptlrpc_req_finished(*request); + RETURN(PTR_ERR(tgt)); + } - rc = md_getattr_lock(lmv->tgts[id_group(&rid)].ltd_exp, - &rid, NULL, 1, valid, ea_size, &req); + rc = md_getattr_name(tgt->ltd_exp, &rid, NULL, NULL, + 1, valid | OBD_MD_FLCROSSREF, + ea_size, suppgid, &req); ptlrpc_req_finished(*request); *request = req; } } else if (rc == -ERESTART) { - /* directory got splitted. time to update local object and - * repeat the request with proper MDS */ - rc = lmv_get_mea_and_update_object(exp, &rid); - if (rc == 0) { - ptlrpc_req_finished(*request); + LASSERT(*request != NULL); + DEBUG_REQ(D_WARNING|D_RPCTRACE, *request, + "Got -ERESTART during getattr!\n"); + ptlrpc_req_finished(*request); + *request = NULL; + + /* + * Directory got split. Time to update local object and repeat + * the request with proper MDS. + */ + rc = lmv_handle_split(exp, &rid); + if (rc == 0) goto repeat; + } + RETURN(rc); +} + +#define md_op_data_fid(op_data, fl) \ + (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \ + fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \ + fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \ + fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \ + NULL) + +static int lmv_early_cancel_slaves(struct obd_export *exp, + struct md_op_data *op_data, int op_tgt, + ldlm_mode_t mode, int bits, int flag) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + ldlm_policy_data_t policy = {{0}}; + struct lu_fid *op_fid; + struct lu_fid *st_fid; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + int rc = 0; + int i; + ENTRY; + + op_fid = md_op_data_fid(op_data, flag); + if (!fid_is_sane(op_fid)) + RETURN(0); + + obj = lmv_object_find(obd, op_fid); + if (obj == NULL) + RETURN(-EALREADY); + + policy.l_inodebits.bits = bits; + for (i = 0; i < obj->lo_objcount; i++) { + tgt = lmv_get_target(lmv, obj->lo_stripes[i].ls_mds); + st_fid = &obj->lo_stripes[i].ls_fid; + if (op_tgt != tgt->ltd_idx) { + CDEBUG(D_INODE, "EARLY_CANCEL slave "DFID" -> mds #%d\n", + PFID(st_fid), tgt->ltd_idx); + rc = md_cancel_unused(tgt->ltd_exp, st_fid, &policy, + mode, LDLM_FL_ASYNC, NULL); + if (rc) + GOTO(out_put_obj, rc); + } else { + CDEBUG(D_INODE, + "EARLY_CANCEL skip operation target %d on "DFID"\n", + op_tgt, PFID(st_fid)); + /* + * Do not cancel locks for operation target, they will + * be handled later in underlaying layer when calling + * function we run on behalf of. + */ + *op_fid = *st_fid; + op_data->op_flags |= flag; + } + } + EXIT; +out_put_obj: + lmv_object_put(obj); + return rc; +} + +static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data, + int op_tgt, ldlm_mode_t mode, int bits, int flag) +{ + struct lu_fid *fid = md_op_data_fid(op_data, flag); + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + ldlm_policy_data_t policy = {{0}}; + struct lmv_object *obj; + int rc = 0; + ENTRY; + + if (!fid_is_sane(fid)) + RETURN(0); + + obj = lmv_object_find(obd, fid); + if (obj) { + rc = lmv_early_cancel_slaves(exp, op_data, op_tgt, mode, + bits, flag); + lmv_object_put(obj); + } else { + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + if (tgt->ltd_idx != op_tgt) { + CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid)); + policy.l_inodebits.bits = bits; + rc = md_cancel_unused(tgt->ltd_exp, fid, &policy, + mode, LDLM_FL_ASYNC, NULL); + } else { + CDEBUG(D_INODE, + "EARLY_CANCEL skip operation target %d on "DFID"\n", + op_tgt, PFID(fid)); + op_data->op_flags |= flag; + rc = 0; } + } RETURN(rc); } /* - * llite passes id of an target inode in data->id1 and id of directory in - * data->id2 + * llite passes fid of an target inode in op_data->op_fid1 and id of directory in + * op_data->op_fid2 */ -static int lmv_link(struct obd_export *exp, struct mdc_op_data *data, +static int lmv_link(struct obd_export *exp, struct md_op_data *op_data, struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_obj *obj; - int rc, mds; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + int rc; + int loop = 0; + mdsno_t mds; + int sidx; ENTRY; - + rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); + if (rc) + RETURN(rc); - if (data->namelen != 0) { - /* usual link request */ - obj = lmv_grab_obj(obd, &data->id2); - if (obj) { - rc = raw_name2idx(obj->hashtype, obj->objcount, - data->name, data->namelen); - data->id2 = obj->objs[rc].id; - lmv_put_obj(obj); - } +repeat: + ++loop; + LASSERT(loop <= 2); + LASSERT(op_data->op_namelen != 0); - mds = id_group(&data->id2); - - CDEBUG(D_OTHER,"link "DLID4":%*s to "DLID4"\n", - OLID4(&data->id2), data->namelen, data->name, - OLID4(&data->id1)); + CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n", + PFID(&op_data->op_fid2), op_data->op_namelen, + op_data->op_name, PFID(&op_data->op_fid1)); + + obj = lmv_object_find(obd, &op_data->op_fid2); + if (obj) { + sidx = raw_name2idx(obj->lo_hashtype, + obj->lo_objcount, + op_data->op_name, + op_data->op_namelen); + op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid; + mds = obj->lo_stripes[sidx].ls_mds; + lmv_object_put(obj); } else { - mds = id_group(&data->id1); - - /* request from MDS to acquire i_links for inode by id1 */ - CDEBUG(D_OTHER, "inc i_nlinks for "DLID4"\n", - OLID4(&data->id1)); + rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds); + if (rc) + RETURN(rc); + } + + CDEBUG(D_INODE, "Forward to mds #%x ("DFID")\n", + mds, PFID(&op_data->op_fid1)); + + op_data->op_fsuid = current->fsuid; + op_data->op_fsgid = current->fsgid; + op_data->op_cap = cfs_curproc_cap_pack(); + tgt = lmv_get_target(lmv, mds); + + /* + * Cancel UPDATE lock on child (fid1). + */ + op_data->op_flags |= MF_MDC_CANCEL_FID2; + rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX, + MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1); + if (rc == 0) + rc = md_link(tgt->ltd_exp, op_data, request); + if (rc == -ERESTART) { + LASSERT(*request != NULL); + DEBUG_REQ(D_WARNING|D_RPCTRACE, *request, + "Got -ERESTART during link!\n"); + ptlrpc_req_finished(*request); + *request = NULL; + + /* + * Directory got split. Time to update local object and repeat + * the request with proper MDS. + */ + rc = lmv_handle_split(exp, &op_data->op_fid2); + if (rc == 0) + goto repeat; } - CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", - mds, OLID4(&data->id1)); - rc = md_link(lmv->tgts[mds].ltd_exp, data, request); - RETURN(rc); } -static int lmv_rename(struct obd_export *exp, struct mdc_op_data *data, +static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data, const char *old, int oldlen, const char *new, int newlen, struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_obj *obj; - int rc, mds; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *src_tgt; + struct lmv_tgt_desc *tgt_tgt; + int rc; + int sidx; + int loop = 0; + struct lmv_object *obj; + mdsno_t mds1; + mdsno_t mds2; ENTRY; - CDEBUG(D_OTHER, "rename %*s in "DLID4" to %*s in "DLID4"\n", - oldlen, old, OLID4(&data->id1), newlen, new, - OLID4(&data->id2)); + LASSERT(oldlen != 0); - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - - if (oldlen == 0) { - /* - * MDS with old dir entry is asking another MDS to create name - * there. - */ - CDEBUG(D_OTHER, - "create %*s(%d/%d) in "DLID4" pointing " - "to "DLID4"\n", newlen, new, oldlen, newlen, - OLID4(&data->id2), OLID4(&data->id1)); + CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n", + oldlen, old, PFID(&op_data->op_fid1), + newlen, new, PFID(&op_data->op_fid2)); - mds = id_group(&data->id2); + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); - /* - * target directory can be splitted, sowe should forward request - * to the right MDS. - */ - obj = lmv_grab_obj(obd, &data->id2); - if (obj) { - mds = raw_name2idx(obj->hashtype, obj->objcount, - (char *)new, newlen); - data->id2 = obj->objs[mds].id; - CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds, - OLID4(&data->id2)); - lmv_put_obj(obj); - } - goto request; +repeat: + ++loop; + LASSERT(loop <= 2); + obj = lmv_object_find(obd, &op_data->op_fid1); + if (obj) { + sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount, + (char *)old, oldlen); + op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid; + mds1 = obj->lo_stripes[sidx].ls_mds; + CDEBUG(D_INODE, "Parent obj "DFID"\n", PFID(&op_data->op_fid1)); + lmv_object_put(obj); + } else { + rc = lmv_fld_lookup(lmv, &op_data->op_fid1, &mds1); + if (rc) + RETURN(rc); } - obj = lmv_grab_obj(obd, &data->id1); + obj = lmv_object_find(obd, &op_data->op_fid2); if (obj) { /* - * directory is already splitted, so we have to forward request - * to the right MDS. + * Directory is already split, so we have to forward request to + * the right MDS. */ - mds = raw_name2idx(obj->hashtype, obj->objcount, - (char *)old, oldlen); - data->id1 = obj->objs[mds].id; - CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds, - OLID4(&data->id1)); - lmv_put_obj(obj); + sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount, + (char *)new, newlen); + + mds2 = obj->lo_stripes[sidx].ls_mds; + op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid; + CDEBUG(D_INODE, "Parent obj "DFID"\n", PFID(&op_data->op_fid2)); + lmv_object_put(obj); + } else { + rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds2); + if (rc) + RETURN(rc); } - obj = lmv_grab_obj(obd, &data->id2); - if (obj) { + op_data->op_fsuid = current->fsuid; + op_data->op_fsgid = current->fsgid; + op_data->op_cap = cfs_curproc_cap_pack(); + + src_tgt = lmv_get_target(lmv, mds1); + tgt_tgt = lmv_get_target(lmv, mds2); + + /* + * LOOKUP lock on src child (fid3) should also be cancelled for + * src_tgt in mdc_rename. + */ + op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3; + + /* + * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its + * own target. + */ + rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx, + LCK_EX, MDS_INODELOCK_UPDATE, + MF_MDC_CANCEL_FID2); + + /* + * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt. + */ + if (rc == 0) { + rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx, + LCK_EX, MDS_INODELOCK_LOOKUP, + MF_MDC_CANCEL_FID4); + } + + /* + * Cancel all the locks on tgt child (fid4). + */ + if (rc == 0) + rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx, + LCK_EX, MDS_INODELOCK_FULL, + MF_MDC_CANCEL_FID4); + + if (rc == 0) + rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen, + new, newlen, request); + + if (rc == -ERESTART) { + LASSERT(*request != NULL); + DEBUG_REQ(D_WARNING|D_RPCTRACE, *request, + "Got -ERESTART during rename!\n"); + ptlrpc_req_finished(*request); + *request = NULL; + /* - * directory is already splitted, so we have to forward request - * to the right MDS. + * Directory got split. Time to update local object and repeat + * the request with proper MDS. */ - mds = raw_name2idx(obj->hashtype, obj->objcount, - (char *)new, newlen); - - data->id2 = obj->objs[mds].id; - CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds, - OLID4(&data->id2)); - lmv_put_obj(obj); - } - - mds = id_group(&data->id1); - -request: - if (id_group(&data->id1) != id_group(&data->id2)) { - CDEBUG(D_OTHER,"cross-node rename "DLID4"/%*s to "DLID4"/%*s\n", - OLID4(&data->id1), oldlen, old, OLID4(&data->id2), - newlen, new); - } - - rc = md_rename(lmv->tgts[mds].ltd_exp, data, old, oldlen, - new, newlen, request); + rc = lmv_handle_split(exp, &op_data->op_fid1); + if (rc == 0) + goto repeat; + } RETURN(rc); } -static int lmv_setattr(struct obd_export *exp, struct mdc_op_data *data, - struct iattr *iattr, void *ea, int ealen, void *ea2, - int ea2len, struct ptlrpc_request **request) +static int lmv_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) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct ptlrpc_request *req; - struct mds_body *body; - struct lmv_obj *obj; - int rc = 0, i; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct ptlrpc_request *req; + struct lmv_tgt_desc *tgt; + struct lmv_object *obj; + int rc = 0; + int i; ENTRY; rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - - obj = lmv_grab_obj(obd, &data->id1); - - CDEBUG(D_OTHER, "SETATTR for "DLID4", valid 0x%x%s\n", - OLID4(&data->id1), iattr->ia_valid, obj ? ", splitted" : ""); - + if (rc) + RETURN(rc); + + obj = lmv_object_find(obd, &op_data->op_fid1); + + CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x%s\n", + PFID(&op_data->op_fid1), op_data->op_attr.ia_valid, + obj ? ", split" : ""); + + op_data->op_flags |= MF_MDC_CANCEL_FID1; if (obj) { - for (i = 0; i < obj->objcount; i++) { - data->id1 = obj->objs[i].id; - - rc = md_setattr(lmv->tgts[id_group(&data->id1)].ltd_exp, - data, iattr, ea, ealen, ea2, ea2len, &req); + for (i = 0; i < obj->lo_objcount; i++) { + op_data->op_fid1 = obj->lo_stripes[i].ls_fid; + + tgt = lmv_get_target(lmv, obj->lo_stripes[i].ls_mds); + if (IS_ERR(tgt)) { + rc = PTR_ERR(tgt); + break; + } - if (id_equal_fid(&obj->id, &obj->objs[i].id)) { + rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, + ea2, ea2len, &req, mod); + + if (lu_fid_eq(&obj->lo_fid, &obj->lo_stripes[i].ls_fid)) { /* - * this is master object and this request should + * This is master object and this request should * be returned back to llite. */ *request = req; @@ -1391,46 +2174,49 @@ static int lmv_setattr(struct obd_export *exp, struct mdc_op_data *data, if (rc) break; } - lmv_put_obj(obj); + lmv_object_put(obj); } else { - LASSERT(id_group(&data->id1) < lmv->desc.ld_tgt_count); - rc = md_setattr(lmv->tgts[id_group(&data->id1)].ltd_exp, - data, iattr, ea, ealen, ea2, ea2len, request); - if (rc == 0) { - body = lustre_msg_buf((*request)->rq_repmsg, 0, - sizeof(*body)); - LASSERT(body != NULL); - LASSERT((body->valid & OBD_MD_FID) != 0); - LASSERT(id_group(&body->id1) == id_group(&data->id1)); - } + tgt = lmv_find_target(lmv, &op_data->op_fid1); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2, + ea2len, request, mod); } RETURN(rc); } -static int lmv_sync(struct obd_export *exp, struct lustre_id *id, - struct ptlrpc_request **request) +static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid, + struct obd_capa *oc, struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; ENTRY; rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); + if (rc) + RETURN(rc); - rc = md_sync(lmv->tgts[id_group(id)].ltd_exp, - id, request); + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_sync(tgt->ltd_exp, fid, oc, request); RETURN(rc); } -int lmv_dirobj_blocking_ast(struct ldlm_lock *lock, - struct ldlm_lock_desc *desc, - void *data, int flag) +/** + * Main purpose of LMV blocking ast is to remove split directory LMV + * presentation object (struct lmv_object) attached to the lock being revoked. + */ +int lmv_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, + void *data, int flag) { - struct lustre_handle lockh; - struct lmv_obj *obj; - int rc; + struct lustre_handle lockh; + struct lmv_object *obj; + int rc; ENTRY; switch (flag) { @@ -1443,588 +2229,405 @@ int lmv_dirobj_blocking_ast(struct ldlm_lock *lock, } break; case LDLM_CB_CANCELING: - /* time to drop cached attrs for dirobj */ - obj = lock->l_ast_data; - if (obj) { - CDEBUG(D_OTHER, "cancel %s on "LPU64"/"LPU64 - ", master "DLID4"\n", - lock->l_resource->lr_name.name[3] == 1 ? - "LOOKUP" : "UPDATE", - lock->l_resource->lr_name.name[0], - lock->l_resource->lr_name.name[1], - OLID4(&obj->id)); - lmv_put_obj(obj); - } - break; - default: - LBUG(); - } - RETURN(0); -} - -static void lmv_remove_dots(struct page *page) -{ - unsigned limit = PAGE_CACHE_SIZE; - char *kaddr = page_address(page); - struct ext2_dir_entry_2 *p; - unsigned offs, rec_len; - - for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) { - p = (struct ext2_dir_entry_2 *)(kaddr + offs); - rec_len = le16_to_cpu(p->rec_len); - - if ((p->name_len == 1 && p->name[0] == '.') || - (p->name_len == 2 && p->name[0] == '.' && p->name[1] == '.')) - p->inode = 0; - } -} - -static int lmv_readpage(struct obd_export *exp, struct lustre_id *id, - __u64 offset, struct page *page, - struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lustre_id rid = *id; - struct lmv_obj *obj; - int rc, i; - ENTRY; - -#warning "we need well-desgined readdir() implementation" - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - - LASSERT(id_group(id) < lmv->desc.ld_tgt_count); - CDEBUG(D_OTHER, "READPAGE at %llu from "DLID4"\n", - offset, OLID4(&rid)); - - obj = lmv_grab_obj(obd, id); - if (obj) { - lmv_lock_obj(obj); - - /* find dirobj containing page with requested offset. */ - for (i = 0; i < obj->objcount; i++) { - if (offset < obj->objs[i].size) - break; - offset -= obj->objs[i].size; - } - rid = obj->objs[i].id; - - lmv_unlock_obj(obj); - lmv_put_obj(obj); - - CDEBUG(D_OTHER, "forward to "DLID4" with offset %lu\n", - OLID4(&rid), (unsigned long)offset); - } - rc = md_readpage(lmv->tgts[id_group(&rid)].ltd_exp, &rid, - offset, page, request); - - if (rc == 0 && !id_equal_fid(&rid, id)) - /* this page isn't from master object. To avoid "." and ".." - * duplication in directory, we have to remove them from all - * slave objects */ - lmv_remove_dots(page); - - RETURN(rc); -} - -static int lmv_unlink_slaves(struct obd_export *exp, struct mdc_op_data *data, - struct ptlrpc_request **req) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct mea *mea = data->mea1; - struct mdc_op_data *data2; - int i, rc = 0; - ENTRY; - - OBD_ALLOC(data2, sizeof(*data2)); - if (data2 == NULL) - RETURN(-ENOMEM); - - LASSERT(mea != NULL); - for (i = 0; i < mea->mea_count; i++) { - memset(data2, 0, sizeof(*data2)); - data2->id1 = mea->mea_ids[i]; - data2->create_mode = MDS_MODE_DONT_LOCK | S_IFDIR; - - if (lmv->tgts[id_group(&data2->id1)].ltd_exp == NULL) - continue; - - rc = md_unlink(lmv->tgts[id_group(&data2->id1)].ltd_exp, - data2, req); - - CDEBUG(D_OTHER, "unlink slave "DLID4" -> %d\n", - OLID4(&mea->mea_ids[i]), rc); - - if (*req) { - ptlrpc_req_finished(*req); - *req = NULL; - } - if (rc) - RETURN(rc); - } - OBD_FREE(data2, sizeof(*data2)); - RETURN(rc); -} - -static int lmv_delete_inode(struct obd_export *exp, struct lustre_id *id) -{ - ENTRY; - - LASSERT(exp && id); - if (lmv_delete_obj(exp, id)) { - CDEBUG(D_OTHER, "lmv object "DLID4" is destroyed.\n", - OLID4(id)); - } - RETURN(0); -} - -static int lmv_unlink(struct obd_export *exp, struct mdc_op_data *data, - struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc, i = 0; - ENTRY; - - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - - if (data->namelen == 0 && data->mea1 != NULL) { - /* mds asks to remove slave objects */ - rc = lmv_unlink_slaves(exp, data, request); - RETURN(rc); - } - - if (data->namelen != 0) { - struct lmv_obj *obj; - - obj = lmv_grab_obj(obd, &data->id1); - if (obj) { - i = raw_name2idx(obj->hashtype, obj->objcount, - data->name, data->namelen); - data->id1 = obj->objs[i].id; - lmv_put_obj(obj); - } - CDEBUG(D_OTHER, "unlink '%*s' in "DLID4" -> %u\n", - data->namelen, data->name, OLID4(&data->id1), - i); - } else { - CDEBUG(D_OTHER, "drop i_nlink on "DLID4"\n", - OLID4(&data->id1)); - } - rc = md_unlink(lmv->tgts[id_group(&data->id1)].ltd_exp, - data, request); - RETURN(rc); -} - -static struct obd_device *lmv_get_real_obd(struct obd_export *exp, - struct lustre_id *id) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc; - ENTRY; - - rc = lmv_check_connect(obd); - if (rc) - RETURN(ERR_PTR(rc)); - obd = lmv->tgts[id_group(id)].ltd_exp->exp_obd; - EXIT; - - return obd; -} - -static int lmv_init_ea_size(struct obd_export *exp, int easize, - int cookiesize) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int i, rc = 0, change = 0; - ENTRY; - - if (lmv->max_easize < easize) { - lmv->max_easize = easize; - change = 1; - } - if (lmv->max_cookiesize < cookiesize) { - lmv->max_cookiesize = cookiesize; - change = 1; - } - if (change == 0) - RETURN(0); - - if (lmv->connected == 0) - RETURN(0); - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - if (lmv->tgts[i].ltd_exp == NULL) { - CWARN("%s: NULL export for %d\n", obd->obd_name, i); - continue; - } - - rc = obd_init_ea_size(lmv->tgts[i].ltd_exp, easize, cookiesize); - if (rc) { - CERROR("obd_init_ea_size() failed on MDT target %d, " - "error %d.\n", i, rc); - break; + /* + * Time to drop cached attrs for split directory object + */ + obj = lock->l_ast_data; + if (obj) { + CDEBUG(D_INODE, "Cancel %s on "LPU64"/"LPU64 + ", master "DFID"\n", + lock->l_resource->lr_name.name[3] == 1 ? + "LOOKUP" : "UPDATE", + lock->l_resource->lr_name.name[0], + lock->l_resource->lr_name.name[1], + PFID(&obj->lo_fid)); + lmv_object_put(obj); } + break; + default: + LBUG(); } - RETURN(rc); + RETURN(0); } -static int lmv_obd_create_single(struct obd_export *exp, struct obdo *oa, - void *acl, int acl_size, - struct lov_stripe_md **ea, - struct obd_trans_info *oti) +static void lmv_hash_adjust(__u64 *hash, __u64 hash_adj) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lov_stripe_md obj_md; - struct lov_stripe_md *obj_mdp = &obj_md; - int rc = 0; - ENTRY; + __u64 val; + + val = le64_to_cpu(*hash); + if (val < hash_adj) + val += MAX_HASH_SIZE; + if (val != DIR_END_OFF) + *hash = cpu_to_le64(val - hash_adj); +} - LASSERT(ea == NULL); - LASSERT(oa->o_mds < lmv->desc.ld_tgt_count); +static __u32 lmv_node_rank(struct obd_export *exp, const struct lu_fid *fid) +{ + __u64 id; + struct obd_import *imp; - rc = obd_create(lmv->tgts[oa->o_mds].ltd_exp, oa, - acl, acl_size, &obj_mdp, oti); + /* + * XXX: to get nid we assume that underlying obd device is mdc. + */ + imp = class_exp2cliimp(exp); + id = imp->imp_connection->c_self + fid_flatten(fid); - RETURN(rc); + CDEBUG(D_INODE, "Readpage node rank: "LPX64" "DFID" "LPX64" "LPX64"\n", + imp->imp_connection->c_self, PFID(fid), id, id ^ (id >> 32)); + + return id ^ (id >> 32); } -/* - * to be called from MDS only. @oa should have correct store cookie and o_fid - * values for "master" object, as it will be used. - */ -int lmv_obd_create(struct obd_export *exp, struct obdo *oa, - void *acl, int acl_size, - struct lov_stripe_md **ea, struct obd_trans_info *oti) +static int lmv_readpage(struct obd_export *exp, const struct lu_fid *fid, + struct obd_capa *oc, __u64 offset64, struct page *page, + struct ptlrpc_request **request) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lustre_id mid; - int i, c, rc = 0; - struct mea *mea; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lu_fid rid = *fid; + struct lmv_object *obj; + __u64 offset; + __u64 hash_adj = 0; + __u32 rank = 0; + __u64 seg_size = 0; + __u64 tgt_tmp = 0; + int tgt_idx = 0; + int tgt0_idx = 0; + int rc; + int nr = 0; + struct lmv_stripe *los; + struct lmv_tgt_desc *tgt; + struct lu_dirpage *dp; + struct lu_dirent *ent; ENTRY; + offset = offset64; + rc = lmv_check_connect(obd); if (rc) RETURN(rc); - LASSERT(oa != NULL); - - if (ea == NULL) { - rc = lmv_obd_create_single(exp, oa, acl, acl_size, NULL, oti); - if (rc) - CERROR("Can't create object, rc = %d\n", rc); - RETURN(rc); - } - - /* acl is only suppied when mds create single remote obj */ - LASSERT(acl == NULL && acl_size == 0); - - if (*ea == NULL) { - rc = obd_alloc_diskmd(exp, (struct lov_mds_md **)ea); - if (rc < 0) { - CERROR("obd_alloc_diskmd() failed, error %d\n", - rc); - RETURN(rc); - } else - rc = 0; - - if (*ea == NULL) - RETURN(-ENOMEM); - } + CDEBUG(D_INODE, "READPAGE at "LPX64" from "DFID"\n", offset, PFID(&rid)); - /* - * here we should take care about splitted dir, so store cookie and fid - * for "master" object should already be allocated and passed in @oa. + /* + * This case handle directory lookup in clustered metadata case (i.e. + * split directory is located on multiple md servers.) + * each server keeps directory entries for certain range of hashes. + * E.g. we have N server and suppose hash range is 0 to MAX_HASH. + * first server will keep records with hashes [ 0 ... MAX_HASH / N - 1], + * second one with hashes [MAX_HASH / N ... 2 * MAX_HASH / N] and + * so on.... + * readdir can simply start reading entries from 0 - N server in + * order but that will not scale well as all client will request dir in + * to server in same order. + * Following algorithm does optimization: + * Instead of doing readdir in 1, 2, ...., N order, client with a + * rank R does readdir in R, R + 1, ..., N, 1, ... R - 1 order. + * (every client has rank R) + * But ll_readdir() expect offset range [0 to MAX_HASH/N) but + * since client ask dir from MDS{R} client has pages with offsets + * [R*MAX_HASH/N ... (R + 1)*MAX_HASH/N] there for we do hash_adj + * on hash values that we get. */ - LASSERT(oa->o_id != 0); - LASSERT(oa->o_fid != 0); - - /* save "master" object id */ - obdo2id(&mid, oa); + obj = lmv_object_find_lock(obd, fid); + if (obj) { + nr = obj->lo_objcount; + LASSERT(nr > 0); + seg_size = MAX_HASH_SIZE; + do_div(seg_size, nr); + los = obj->lo_stripes; + tgt = lmv_get_target(lmv, los[0].ls_mds); + rank = lmv_node_rank(tgt->ltd_exp, fid) % nr; + tgt_tmp = offset; + do_div(tgt_tmp, seg_size); + tgt0_idx = do_div(tgt_tmp, nr); + tgt_idx = (tgt0_idx + rank) % nr; + + if (tgt_idx < tgt0_idx) + /* + * Wrap around. + * + * Last segment has unusual length due to division + * rounding. + */ + hash_adj = MAX_HASH_SIZE - seg_size * nr; + else + hash_adj = 0; - mea = (struct mea *)*ea; - mea->mea_master = -1; - mea->mea_magic = MEA_MAGIC_ALL_CHARS; + hash_adj += rank * seg_size; - if (!mea->mea_count || mea->mea_count > lmv->desc.ld_tgt_count) - mea->mea_count = lmv->desc.ld_tgt_count; + CDEBUG(D_INODE, "Readpage hash adjustment: %x "LPX64" " + LPX64"/%x -> "LPX64"/%x\n", rank, hash_adj, + offset, tgt0_idx, offset + hash_adj, tgt_idx); - for (i = 0, c = 0; c < mea->mea_count && i < lmv->desc.ld_tgt_count; i++) { - struct lov_stripe_md obj_md; - struct lov_stripe_md *obj_mdp = &obj_md; - - if (lmv->tgts[i].ltd_exp == NULL) { - /* this is "master" MDS */ - mea->mea_master = i; - mea->mea_ids[c] = mid; - c++; - continue; - } + offset = (offset + hash_adj) & MAX_HASH_SIZE; + rid = obj->lo_stripes[tgt_idx].ls_fid; + tgt = lmv_get_target(lmv, los[tgt_idx].ls_mds); - /* - * "master" MDS should always be part of stripped dir, - * so scan for it. - */ - if (mea->mea_master == -1 && c == mea->mea_count - 1) - continue; + CDEBUG(D_INODE, "Forward to "DFID" with offset %lu i %d\n", + PFID(&rid), (unsigned long)offset, tgt_idx); + } else + tgt = lmv_find_target(lmv, &rid); - oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLTYPE | OBD_MD_FLMODE | - OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLID; + if (IS_ERR(tgt)) + GOTO(cleanup, rc = PTR_ERR(tgt)); - rc = obd_create(lmv->tgts[c].ltd_exp, oa, NULL, 0, - &obj_mdp, oti); - if (rc) { - CERROR("obd_create() failed on MDT target %d, " - "error %d\n", c, rc); - RETURN(rc); + rc = md_readpage(tgt->ltd_exp, &rid, oc, offset, page, request); + if (rc) + GOTO(cleanup, rc); + if (obj) { + dp = cfs_kmap(page); + + lmv_hash_adjust(&dp->ldp_hash_start, hash_adj); + lmv_hash_adjust(&dp->ldp_hash_end, hash_adj); + LASSERT(le64_to_cpu(dp->ldp_hash_start) <= offset64); + + for (ent = lu_dirent_start(dp); ent != NULL; + ent = lu_dirent_next(ent)) + lmv_hash_adjust(&ent->lde_hash, hash_adj); + + if (tgt0_idx != nr - 1) { + __u64 end; + + end = le64_to_cpu(dp->ldp_hash_end); + if (end == DIR_END_OFF) { + dp->ldp_hash_end = cpu_to_le32(seg_size * + (tgt0_idx + 1)); + CDEBUG(D_INODE, + ""DFID" reset end "LPX64" tgt %d\n", + PFID(&rid), + le64_to_cpu(dp->ldp_hash_end), tgt_idx); + } } + cfs_kunmap(page); + } + EXIT; +cleanup: + if (obj) + lmv_object_put_unlock(obj); + return rc; +} + +static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data, + struct ptlrpc_request **request) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt = NULL; + struct lmv_object *obj; + int rc; + int sidx; + int loop = 0; + ENTRY; - CDEBUG(D_OTHER, "dirobj at mds %d: "LPU64"/%u\n", - i, oa->o_id, oa->o_generation); + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); +repeat: + ++loop; + LASSERT(loop <= 2); + LASSERT(op_data->op_namelen != 0); - /* - * here, when object is created (or it is master and was passed - * from caller) on desired MDS we save its fid to local mea_ids. - */ - LASSERT(oa->o_fid); + obj = lmv_object_find(obd, &op_data->op_fid1); + if (obj) { + sidx = raw_name2idx(obj->lo_hashtype, + obj->lo_objcount, + op_data->op_name, + op_data->op_namelen); + op_data->op_bias &= ~MDS_CHECK_SPLIT; + op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid; + tgt = lmv_get_target(lmv, + obj->lo_stripes[sidx].ls_mds); + lmv_object_put(obj); + CDEBUG(D_INODE, "UNLINK '%*s' in "DFID" -> %u\n", + op_data->op_namelen, op_data->op_name, + PFID(&op_data->op_fid1), sidx); + } + + if (tgt == NULL) { + tgt = lmv_find_target(lmv, &op_data->op_fid1); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + op_data->op_bias |= MDS_CHECK_SPLIT; + } + + op_data->op_fsuid = current->fsuid; + op_data->op_fsgid = current->fsgid; + op_data->op_cap = cfs_curproc_cap_pack(); - /* - * store cookie should be defined here for both cases (master - * object and not master), because master is already created. - */ - LASSERT(oa->o_id); + /* + * If child's fid is given, cancel unused locks for it if it is from + * another export than parent. + * + * LOOKUP lock for child (fid3) should also be cancelled on parent + * tgt_tgt in mdc_unlink(). + */ + op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3; - /* fill mea by store cookie and fid */ - obdo2id(&mea->mea_ids[c], oa); - c++; - } - LASSERT(c == mea->mea_count); + /* + * Cancel FULL locks on child (fid3). + */ + rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX, + MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3); - CDEBUG(D_OTHER, "%d dirobjects created\n", - (int)mea->mea_count); - - RETURN(rc); -} + if (rc == 0) + rc = md_unlink(tgt->ltd_exp, op_data, request); -static int lmv_llog_init(struct obd_device *obd, struct obd_llogs *llogs, - struct obd_device *tgt, int count, - struct llog_catid *logid) -{ - struct llog_ctxt *ctxt; - int rc; - ENTRY; + if (rc == -ERESTART) { + LASSERT(*request != NULL); + DEBUG_REQ(D_WARNING|D_RPCTRACE, *request, + "Got -ERESTART during unlink!\n"); + ptlrpc_req_finished(*request); + *request = NULL; - rc = obd_llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL, - &llog_client_ops); - if (rc == 0) { - ctxt = llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT); - ctxt->loc_imp = tgt->u.cli.cl_import; + /* + * Directory got split. Time to update local object and repeat + * the request with proper MDS. + */ + rc = lmv_handle_split(exp, &op_data->op_fid1); + if (rc == 0) + goto repeat; } - RETURN(rc); } -static int lmv_llog_finish(struct obd_device *obd, - struct obd_llogs *llogs, int count) +static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) { - int rc; - ENTRY; + int rc = 0; - rc = obd_llog_cleanup(llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT)); + switch (stage) { + case OBD_CLEANUP_EARLY: + /* XXX: here should be calling obd_precleanup() down to + * stack. */ + break; + case OBD_CLEANUP_EXPORTS: + rc = obd_llog_finish(obd, 0); + if (rc != 0) + CERROR("failed to cleanup llogging subsystems\n"); + break; + default: + break; + } RETURN(rc); } static int lmv_get_info(struct obd_export *exp, __u32 keylen, - void *key, __u32 *vallen, void *val) + void *key, __u32 *vallen, void *val, + struct lov_stripe_md *lsm) { - struct obd_device *obd; - struct lmv_obd *lmv; - int rc = 0; + struct obd_device *obd; + struct lmv_obd *lmv; + int rc = 0; ENTRY; obd = class_exp2obd(exp); if (obd == NULL) { - CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n", + CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n", exp->exp_handle.h_cookie); RETURN(-EINVAL); } lmv = &obd->u.lmv; - if (keylen == 6 && memcmp(key, "mdsize", 6) == 0) { - __u32 *mdsize = val; - *vallen = sizeof(__u32); - *mdsize = sizeof(struct lustre_id) * lmv->desc.ld_tgt_count - + sizeof(struct mea); - RETURN(0); - } else if (keylen == 6 && memcmp(key, "mdsnum", 6) == 0) { - struct obd_uuid *cluuid = &lmv->cluuid; + if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) { struct lmv_tgt_desc *tgts; - __u32 *mdsnum = val; int i; - for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) { - if (obd_uuid_equals(&tgts->uuid, cluuid)) { - *vallen = sizeof(__u32); - *mdsnum = i; - RETURN(0); - } - } - LASSERT(0); - } else if (keylen == 6 && memcmp(key, "rootid", 6) == 0) { rc = lmv_check_connect(obd); if (rc) RETURN(rc); - - /* getting rootid from first MDS. */ - rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key, - vallen, val); - RETURN(rc); - } else if (keylen >= strlen("lmvdesc") && strcmp(key, "lmvdesc") == 0) { - struct lmv_desc *desc_ret = val; - *desc_ret = lmv->desc; - RETURN(0); - } else if (keylen == strlen("remote_flag") && - !strcmp(key, "remote_flag")) { - struct lmv_tgt_desc *tgts; - int i; - rc = lmv_check_connect(obd); - if (rc) - RETURN(rc); - LASSERT(*vallen == sizeof(__u32)); for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) { - /* all tgts should be connected when this get called. */ + /* + * All tgts should be connected when this gets called. + */ if (!tgts || !tgts->ltd_exp) { CERROR("target not setup?\n"); continue; } if (!obd_get_info(tgts->ltd_exp, keylen, key, - vallen, val)) + vallen, val, NULL)) RETURN(0); } RETURN(-EINVAL); - } else if (keylen >= strlen("lovdesc") && strcmp(key, "lovdesc") == 0) { + } else if (KEY_IS(KEY_MAX_EASIZE) || KEY_IS(KEY_CONN_DATA)) { rc = lmv_check_connect(obd); if (rc) RETURN(rc); - /* forwarding this request to first MDS, it should know LOV - * desc. */ + /* + * Forwarding this request to first MDS, it should know LOV + * desc. + */ rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key, - vallen, val); + vallen, val, NULL); + if (!rc && KEY_IS(KEY_CONN_DATA)) { + exp->exp_connect_flags = + ((struct obd_connect_data *)val)->ocd_connect_flags; + } RETURN(rc); } - CDEBUG(D_IOCTL, "invalid key\n"); + CDEBUG(D_IOCTL, "Invalid key\n"); RETURN(-EINVAL); } -int lmv_set_info(struct obd_export *exp, obd_count keylen, - void *key, obd_count vallen, void *val) +int lmv_set_info_async(struct obd_export *exp, obd_count keylen, + void *key, obd_count vallen, void *val, + struct ptlrpc_request_set *set) { struct lmv_tgt_desc *tgt; struct obd_device *obd; struct lmv_obd *lmv; + int rc = 0; ENTRY; obd = class_exp2obd(exp); if (obd == NULL) { - CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n", + CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n", exp->exp_handle.h_cookie); RETURN(-EINVAL); } lmv = &obd->u.lmv; - if (keylen >= strlen("inter_mds") && strcmp(key, "inter_mds") == 0) { - lmv->server_timeout = 1; - lmv_set_timeouts(obd); - RETURN(0); - } + if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) || + KEY_IS(KEY_INIT_RECOV_BACKUP)) { + int i, err = 0; - /* maybe this could be default */ - if ((keylen == strlen("sec") && strcmp(key, "sec") == 0) || - (keylen == strlen("sec_flags") && strcmp(key, "sec_flags") == 0) || - (keylen == strlen("nllu") && strcmp(key, "nllu") == 0)) { - struct obd_export *exp; - int rc = 0, err, i; + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + tgt = &lmv->tgts[i]; - spin_lock(&lmv->lmv_lock); - for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; - i++, tgt++) { - exp = tgt->ltd_exp; - /* during setup time the connections to mdc might - * haven't been established. - */ - if (exp == NULL) { - struct obd_device *tgt_obd; - - tgt_obd = class_find_client_obd(&tgt->uuid, - OBD_MDC_DEVICENAME, - &obd->obd_uuid); - if (!tgt_obd) { - CERROR("can't set info %s, " - "device %s not attached?\n", - (char *) key, tgt->uuid.uuid); - rc = -EINVAL; - continue; - } - exp = tgt_obd->obd_self_export; - } + if (!tgt->ltd_exp) + continue; - err = obd_set_info(exp, keylen, key, vallen, val); - if (!rc) + err = obd_set_info_async(tgt->ltd_exp, + keylen, key, vallen, val, set); + if (err && rc == 0) rc = err; } - spin_unlock(&lmv->lmv_lock); RETURN(rc); } - if ((keylen == strlen("flush_cred") && - strcmp(key, "flush_cred") == 0)) { - int rc = 0, i; - - for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; - i++, tgt++) { - if (!tgt->ltd_exp) - continue; - rc = obd_set_info(tgt->ltd_exp, - keylen, key, vallen, val); - if (rc) - RETURN(rc); - } - - RETURN(0); - } - RETURN(-EINVAL); } int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, struct lov_stripe_md *lsm) { - struct obd_device *obd = class_exp2obd(exp); - struct lmv_obd *lmv = &obd->u.lmv; - struct mea *meap, *lsmp; - int mea_size, i; + struct obd_device *obd = class_exp2obd(exp); + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_stripe_md *meap; + struct lmv_stripe_md *lsmp; + int mea_size; + int i; ENTRY; - mea_size = (sizeof(struct lustre_id) * - lmv->desc.ld_tgt_count) + sizeof(struct mea); + mea_size = lmv_get_easize(lmv); if (!lmmp) RETURN(mea_size); @@ -2043,8 +2646,8 @@ int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, if (!lsm) RETURN(mea_size); - lsmp = (struct mea *)lsm; - meap = (struct mea *)*lmmp; + lsmp = (struct lmv_stripe_md *)lsm; + meap = (struct lmv_stripe_md *)*lmmp; if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR && lsmp->mea_magic != MEA_MAGIC_ALL_CHARS) @@ -2056,7 +2659,7 @@ int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, for (i = 0; i < lmv->desc.ld_tgt_count; i++) { meap->mea_ids[i] = meap->mea_ids[i]; - id_cpu_to_le(&meap->mea_ids[i]); + fid_cpu_to_le(&meap->mea_ids[i], &meap->mea_ids[i]); } RETURN(mea_size); @@ -2065,22 +2668,22 @@ int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp, int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, struct lov_mds_md *lmm, int lmm_size) { - struct obd_device *obd = class_exp2obd(exp); - struct mea **tmea = (struct mea **)lsmp; - struct mea *mea = (struct mea *)lmm; - struct lmv_obd *lmv = &obd->u.lmv; - int mea_size, i, rc = 0; - __u32 magic; + struct obd_device *obd = class_exp2obd(exp); + struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp; + struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm; + struct lmv_obd *lmv = &obd->u.lmv; + int mea_size; + int i; + __u32 magic; ENTRY; - mea_size = sizeof(struct lustre_id) * - lmv->desc.ld_tgt_count + sizeof(struct mea); - + mea_size = lmv_get_easize(lmv); if (lsmp == NULL) return mea_size; if (*lsmp != NULL && lmm == NULL) { OBD_FREE(*tmea, mea_size); + *lsmp = NULL; RETURN(0); } @@ -2094,22 +2697,16 @@ int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, RETURN(mea_size); if (mea->mea_magic == MEA_MAGIC_LAST_CHAR || - mea->mea_magic == MEA_MAGIC_ALL_CHARS) + mea->mea_magic == MEA_MAGIC_ALL_CHARS || + mea->mea_magic == MEA_MAGIC_HASH_SEGMENT) { magic = le32_to_cpu(mea->mea_magic); } else { - struct mea_old *old = (struct mea_old *)lmm; - - mea_size = sizeof(struct lustre_id) * old->mea_count + - sizeof(struct mea_old); - - if (old->mea_count > 256 || old->mea_master > 256 || - lmm_size < mea_size || old->mea_master > old->mea_count) { - CWARN("bad MEA: count %u, master %u, size %u\n", - old->mea_count, old->mea_master, mea_size); - GOTO(out_free_mea, rc = -EINVAL); - } - magic = MEA_MAGIC_LAST_CHAR; + /* + * Old mea is not handled here. + */ + CERROR("Old not supportable EA is found\n"); + LBUG(); } (*tmea)->mea_magic = magic; @@ -2118,141 +2715,364 @@ int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, for (i = 0; i < (*tmea)->mea_count; i++) { (*tmea)->mea_ids[i] = mea->mea_ids[i]; - id_le_to_cpu(&(*tmea)->mea_ids[i]); + fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]); } RETURN(mea_size); - -out_free_mea: - OBD_FREE(*tmea, mea_size); - return rc; } -int lmv_brw(int rw, struct obd_export *exp, struct obdo *oa, - struct lov_stripe_md *ea, obd_count oa_bufs, - struct brw_page *pgarr, struct obd_trans_info *oti) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct mea *mea = (struct mea *) ea; - int err; - - LASSERT(oa != NULL); - LASSERT(ea != NULL); - LASSERT(pgarr != NULL); - LASSERT(oa->o_mds < lmv->desc.ld_tgt_count); - - oa->o_gr = id_gen(&mea->mea_ids[oa->o_mds]); - oa->o_id = id_ino(&mea->mea_ids[oa->o_mds]); - oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP; - - err = obd_brw(rw, lmv->tgts[oa->o_mds].ltd_exp, - oa, NULL, oa_bufs, pgarr, oti); - RETURN(err); -} - -static int lmv_cancel_unused(struct obd_export *exp, - struct lov_stripe_md *lsm, - int flags, void *opaque) +static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid, + ldlm_policy_data_t *policy, ldlm_mode_t mode, + int flags, void *opaque) { - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc = 0, err, i; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int rc = 0; + int err; + int i; ENTRY; - LASSERT(lsm == NULL); - + LASSERT(fid != NULL); + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].active) + if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].ltd_active) continue; - - err = obd_cancel_unused(lmv->tgts[i].ltd_exp, - NULL, flags, opaque); + + err = md_cancel_unused(lmv->tgts[i].ltd_exp, fid, + policy, mode, flags, opaque); if (!rc) rc = err; } RETURN(rc); } +int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data, + __u32 *bits) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int rc; + ENTRY; + + rc = md_set_lock_data(lmv->tgts[0].ltd_exp, lockh, data, bits); + RETURN(rc); +} + +ldlm_mode_t lmv_lock_match(struct obd_export *exp, int flags, + const struct lu_fid *fid, ldlm_type_t type, + ldlm_policy_data_t *policy, ldlm_mode_t mode, + struct lustre_handle *lockh) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + ldlm_mode_t rc; + int i; + ENTRY; + + CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid)); + + /* + * With CMD every object can have two locks in different namespaces: + * lookup lock in space of mds storing direntry and update/open lock in + * space of mds storing inode. Thus we check all targets, not only that + * one fid was created in. + */ + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + rc = md_lock_match(lmv->tgts[i].ltd_exp, flags, fid, + type, policy, mode, lockh); + if (rc) + RETURN(rc); + } + + RETURN(0); +} + +int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req, + struct obd_export *dt_exp, struct obd_export *md_exp, + struct lustre_md *md) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int rc; + ENTRY; + rc = md_get_lustre_md(lmv->tgts[0].ltd_exp, req, dt_exp, md_exp, md); + RETURN(rc); +} + +int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + ENTRY; + + if (md->mea) + obd_free_memmd(exp, (void *)&md->mea); + RETURN(md_free_lustre_md(lmv->tgts[0].ltd_exp, md)); +} + +int lmv_set_open_replay_data(struct obd_export *exp, + struct obd_client_handle *och, + struct ptlrpc_request *open_req) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + ENTRY; + + tgt = lmv_find_target(lmv, &och->och_fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + RETURN(md_set_open_replay_data(tgt->ltd_exp, och, open_req)); +} + +int lmv_clear_open_replay_data(struct obd_export *exp, + struct obd_client_handle *och) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + ENTRY; + + tgt = lmv_find_target(lmv, &och->och_fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + RETURN(md_clear_open_replay_data(tgt->ltd_exp, och)); +} + +static int lmv_get_remote_perm(struct obd_export *exp, + const struct lu_fid *fid, + struct obd_capa *oc, __u32 suppgid, + struct ptlrpc_request **request) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; + ENTRY; + + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); + + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_get_remote_perm(tgt->ltd_exp, fid, oc, suppgid, request); + RETURN(rc); +} + +static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc, + renew_capa_cb_t cb) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; + ENTRY; + + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); + + tgt = lmv_find_target(lmv, &oc->c_capa.lc_fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_renew_capa(tgt->ltd_exp, oc, cb); + RETURN(rc); +} + +int lmv_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req, + const struct req_msg_field *field, struct obd_capa **oc) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + int rc; + + ENTRY; + rc = md_unpack_capa(lmv->tgts[0].ltd_exp, req, field, oc); + RETURN(rc); +} + +int lmv_intent_getattr_async(struct obd_export *exp, + struct md_enqueue_info *minfo, + struct ldlm_enqueue_info *einfo) +{ + struct md_op_data *op_data = &minfo->mi_data; + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_object *obj; + struct lmv_tgt_desc *tgt; + int rc; + int sidx; + ENTRY; + + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); + + if (!fid_is_sane(&op_data->op_fid2)) { + obj = lmv_object_find(obd, &op_data->op_fid1); + if (obj && op_data->op_namelen) { + sidx = raw_name2idx(obj->lo_hashtype, + obj->lo_objcount, + (char *)op_data->op_name, + op_data->op_namelen); + op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid; + tgt = lmv_get_target(lmv, + obj->lo_stripes[sidx].ls_mds); + CDEBUG(D_INODE, + "Choose slave dir ("DFID") -> mds #%d\n", + PFID(&op_data->op_fid1), tgt->ltd_idx); + } else { + tgt = lmv_find_target(lmv, &op_data->op_fid1); + } + if (obj) + lmv_object_put(obj); + } else { + op_data->op_fid1 = op_data->op_fid2; + tgt = lmv_find_target(lmv, &op_data->op_fid2); + op_data->op_bias = MDS_CROSS_REF; + /* + * Unfortunately, we have to lie to MDC/MDS to retrieve + * attributes llite needs. + */ + if (minfo->mi_it.it_op & IT_LOOKUP) + minfo->mi_it.it_op = IT_GETATTR; + } + + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo); + RETURN(rc); +} + +int lmv_revalidate_lock(struct obd_export *exp, + struct lookup_intent *it, + struct lu_fid *fid) +{ + struct obd_device *obd = exp->exp_obd; + struct lmv_obd *lmv = &obd->u.lmv; + struct lmv_tgt_desc *tgt; + int rc; + ENTRY; + + rc = lmv_check_connect(obd); + if (rc) + RETURN(rc); + + tgt = lmv_find_target(lmv, fid); + if (IS_ERR(tgt)) + RETURN(PTR_ERR(tgt)); + + rc = md_revalidate_lock(tgt->ltd_exp, it, fid); + RETURN(rc); +} + + struct obd_ops lmv_obd_ops = { .o_owner = THIS_MODULE, - .o_attach = lmv_attach, - .o_detach = lmv_detach, .o_setup = lmv_setup, .o_cleanup = lmv_cleanup, + .o_precleanup = lmv_precleanup, + .o_process_config = lmv_process_config, .o_connect = lmv_connect, .o_disconnect = lmv_disconnect, .o_statfs = lmv_statfs, - .o_llog_init = lmv_llog_init, - .o_llog_finish = lmv_llog_finish, .o_get_info = lmv_get_info, - .o_set_info = lmv_set_info, - .o_create = lmv_obd_create, + .o_set_info_async = lmv_set_info_async, .o_packmd = lmv_packmd, .o_unpackmd = lmv_unpackmd, - .o_brw = lmv_brw, - .o_init_ea_size = lmv_init_ea_size, .o_notify = lmv_notify, + .o_get_uuid = lmv_get_uuid, .o_iocontrol = lmv_iocontrol, - .o_cancel_unused = lmv_cancel_unused, + .o_fid_delete = lmv_fid_delete }; struct md_ops lmv_md_ops = { - .m_getstatus = lmv_getstatus, - .m_getattr = lmv_getattr, - .m_change_cbdata = lmv_change_cbdata, - .m_change_cbdata_name = lmv_change_cbdata_name, - .m_close = lmv_close, - .m_create = lmv_create, - .m_done_writing = lmv_done_writing, - .m_enqueue = lmv_enqueue, - .m_getattr_lock = lmv_getattr_lock, - .m_intent_lock = lmv_intent_lock, - .m_link = lmv_link, - .m_rename = lmv_rename, - .m_setattr = lmv_setattr, - .m_sync = lmv_sync, - .m_readpage = lmv_readpage, - .m_unlink = lmv_unlink, - .m_get_real_obd = lmv_get_real_obd, - .m_valid_attrs = lmv_valid_attrs, - .m_delete_inode = lmv_delete_inode, - .m_access_check = lmv_access_check, + .m_getstatus = lmv_getstatus, + .m_change_cbdata = lmv_change_cbdata, + .m_close = lmv_close, + .m_create = lmv_create, + .m_done_writing = lmv_done_writing, + .m_enqueue = lmv_enqueue, + .m_getattr = lmv_getattr, + .m_getxattr = lmv_getxattr, + .m_getattr_name = lmv_getattr_name, + .m_intent_lock = lmv_intent_lock, + .m_link = lmv_link, + .m_rename = lmv_rename, + .m_setattr = lmv_setattr, + .m_setxattr = lmv_setxattr, + .m_sync = lmv_sync, + .m_readpage = lmv_readpage, + .m_unlink = lmv_unlink, + .m_init_ea_size = lmv_init_ea_size, + .m_cancel_unused = lmv_cancel_unused, + .m_set_lock_data = lmv_set_lock_data, + .m_lock_match = lmv_lock_match, + .m_get_lustre_md = lmv_get_lustre_md, + .m_free_lustre_md = lmv_free_lustre_md, + .m_set_open_replay_data = lmv_set_open_replay_data, + .m_clear_open_replay_data = lmv_clear_open_replay_data, + .m_renew_capa = lmv_renew_capa, + .m_unpack_capa = lmv_unpack_capa, + .m_get_remote_perm = lmv_get_remote_perm, + .m_intent_getattr_async = lmv_intent_getattr_async, + .m_revalidate_lock = lmv_revalidate_lock }; +static quota_interface_t *quota_interface; +extern quota_interface_t lmv_quota_interface; + int __init lmv_init(void) { struct lprocfs_static_vars lvars; - int rc; + int rc; - obj_cache = kmem_cache_create("lmv_objects", - sizeof(struct lmv_obj), - 0, 0, NULL, NULL); - if (!obj_cache) { - CERROR("error allocating lmv objects cache\n"); + lmv_object_cache = cfs_mem_cache_create("lmv_objects", + sizeof(struct lmv_object), + 0, 0); + if (!lmv_object_cache) { + CERROR("Error allocating lmv objects cache\n"); return -ENOMEM; } - lprocfs_init_vars(lmv, &lvars); + lprocfs_lmv_init_vars(&lvars); + + request_module("lquota"); + quota_interface = PORTAL_SYMBOL_GET(lmv_quota_interface); + init_obd_quota_ops(quota_interface, &lmv_obd_ops); + rc = class_register_type(&lmv_obd_ops, &lmv_md_ops, - lvars.module_vars, - OBD_LMV_DEVICENAME); - if (rc) - kmem_cache_destroy(obj_cache); - + lvars.module_vars, LUSTRE_LMV_NAME, NULL); + if (rc) { + if (quota_interface) + PORTAL_SYMBOL_PUT(lmv_quota_interface); + cfs_mem_cache_destroy(lmv_object_cache); + } + return rc; } #ifdef __KERNEL__ static void lmv_exit(void) { - class_unregister_type(OBD_LMV_DEVICENAME); + if (quota_interface) + PORTAL_SYMBOL_PUT(lmv_quota_interface); + + class_unregister_type(LUSTRE_LMV_NAME); - LASSERTF(kmem_cache_destroy(obj_cache) == 0, - "can't free lmv objects cache, %d object(s)" - "still in use\n", atomic_read(&obj_cache_count)); + LASSERTF(atomic_read(&lmv_object_count) == 0, + "Can't free lmv objects cache, %d object(s) busy\n", + atomic_read(&lmv_object_count)); + cfs_mem_cache_destroy(lmv_object_cache); } -MODULE_AUTHOR("Cluster File Systems, Inc. "); +MODULE_AUTHOR("Sun Microsystems, Inc. "); MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver"); MODULE_LICENSE("GPL");