/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2011, 2012, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ #define DEBUG_SUBSYSTEM S_LMV #ifdef __KERNEL__ #include #include #include #include #include #include #include #include #include #else #include #endif #include #include #include #include #include #include #include #include #include "lmv_internal.h" static void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt, int activate) { if (tgt->ltd_active == activate) return; tgt->ltd_active = activate; lmv->desc.ld_active_tgt_count += (activate ? 1 : -1); } /** * 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 (!) * -EBADF : The UUID is found, but the OBD of the wrong type (!) */ 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; int rc = 0; ENTRY; CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n", lmv, uuid->uuid, activate); spin_lock(&lmv->lmv_lock); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { tgt = lmv->tgts[i]; if (tgt == NULL || tgt->ltd_exp == NULL) continue; 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->ltd_uuid)) break; } if (i == lmv->desc.ld_tgt_count) GOTO(out_lmv_lock, rc = -EINVAL); obd = class_exp2obd(tgt->ltd_exp); if (obd == NULL) GOTO(out_lmv_lock, rc = -ENOTCONN); 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, LUSTRE_MDC_NAME) == 0); 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"); lmv_activate_target(lmv, tgt, activate); EXIT; out_lmv_lock: spin_unlock(&lmv->lmv_lock); return rc; } struct obd_uuid *lmv_get_uuid(struct obd_export *exp) { struct lmv_obd *lmv = &exp->exp_obd->u.lmv; return obd_get_uuid(lmv->tgts[0]->ltd_exp); } static int lmv_notify(struct obd_device *obd, struct obd_device *watched, enum obd_notify_event ev, void *data) { 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, 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_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; /* * 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 /* * Pass the notification up the chain. */ if (obd->obd_observer) rc = obd_notify(obd->obd_observer, watched, ev, data); 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(const struct lu_env *env, struct obd_export **exp, struct obd_device *obd, struct obd_uuid *cluuid, struct obd_connect_data *data, void *localdata) { #ifdef __KERNEL__ struct proc_dir_entry *lmv_proc_dir; #endif struct lmv_obd *lmv = &obd->u.lmv; struct lustre_handle conn = { 0 }; int rc = 0; ENTRY; /* * 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); class_export_get(*exp); lmv->exp = *exp; lmv->connected = 0; lmv->cluuid = *cluuid; if (data) lmv->conn_data = *data; #ifdef __KERNEL__ lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry, NULL, NULL); if (IS_ERR(lmv_proc_dir)) { CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.", obd->obd_type->typ_name, obd->obd_name); lmv_proc_dir = NULL; } #endif /* * 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 (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); } #endif RETURN(rc); } static void lmv_set_timeouts(struct obd_device *obd) { struct lmv_tgt_desc *tgt; struct lmv_obd *lmv; int i; lmv = &obd->u.lmv; if (lmv->server_timeout == 0) return; if (lmv->connected == 0) return; for (i = 0; i < lmv->desc.ld_tgt_count; i++) { tgt = lmv->tgts[i]; if (tgt == NULL || tgt->ltd_exp == NULL || tgt->ltd_active == 0) continue; obd_set_info_async(NULL, tgt->ltd_exp, sizeof(KEY_INTERMDS), KEY_INTERMDS, 0, NULL, NULL); } } static int lmv_init_ea_size(struct obd_export *exp, int easize, int def_easize, int cookiesize) { 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->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); if (lmv->connected == 0) RETURN(0); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL || lmv->tgts[i]->ltd_active == 0) { CWARN("%s: NULL export for %d\n", obd->obd_name, i); continue; } rc = md_init_ea_size(lmv->tgts[i]->ltd_exp, easize, def_easize, cookiesize); if (rc) { CERROR("%s: obd_init_ea_size() failed on MDT target %d:" " rc = %d.\n", obd->obd_name, i, rc); break; } } RETURN(rc); } #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; #endif 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; 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); } 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); if (!mdc_obd->obd_set_up) { CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid); RETURN(-EINVAL); } 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_obd, mdc_exp, LUSTRE_SEQ_METADATA); if (rc) RETURN(rc); target.ft_srv = NULL; target.ft_exp = mdc_exp; target.ft_idx = tgt->ltd_idx; fld_client_add_target(&lmv->lmv_fld, &target); mdc_data = &class_exp2cliimp(mdc_exp)->imp_connect_data; 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); } 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[0])); if (rc) { obd_disconnect(mdc_exp); RETURN(rc); } } tgt->ltd_active = 1; tgt->ltd_exp = mdc_exp; lmv->desc.ld_active_tgt_count++; 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, cfs_atomic_read(&obd->obd_refcount)); #ifdef __KERNEL__ lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds"); if (lmv_proc_dir) { struct proc_dir_entry *mdc_symlink; LASSERT(mdc_obd->obd_type != NULL); LASSERT(mdc_obd->obd_type->typ_name != NULL); mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name, lmv_proc_dir, "../../../%s/%s", mdc_obd->obd_type->typ_name, mdc_obd->obd_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 RETURN(0); } static void lmv_del_target(struct lmv_obd *lmv, int index) { if (lmv->tgts[index] == NULL) return; OBD_FREE_PTR(lmv->tgts[index]); lmv->tgts[index] = NULL; return; } static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp, __u32 index, int gen) { struct lmv_obd *lmv = &obd->u.lmv; struct lmv_tgt_desc *tgt; int rc = 0; ENTRY; CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index); lmv_init_lock(lmv); if (lmv->desc.ld_tgt_count == 0) { struct obd_device *mdc_obd; mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, &obd->obd_uuid); if (!mdc_obd) { lmv_init_unlock(lmv); CERROR("%s: Target %s not attached: rc = %d\n", obd->obd_name, uuidp->uuid, -EINVAL); RETURN(-EINVAL); } } if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) { tgt = lmv->tgts[index]; CERROR("%s: UUID %s already assigned at LOV target index %d:" " rc = %d\n", obd->obd_name, obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST); lmv_init_unlock(lmv); RETURN(-EEXIST); } if (index >= lmv->tgts_size) { /* We need to reallocate the lmv target array. */ struct lmv_tgt_desc **newtgts, **old = NULL; __u32 newsize = 1; __u32 oldsize = 0; while (newsize < index + 1) newsize = newsize << 1; OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize); if (newtgts == NULL) { lmv_init_unlock(lmv); RETURN(-ENOMEM); } if (lmv->tgts_size) { memcpy(newtgts, lmv->tgts, sizeof(*newtgts) * lmv->tgts_size); old = lmv->tgts; oldsize = lmv->tgts_size; } lmv->tgts = newtgts; lmv->tgts_size = newsize; smp_rmb(); if (old) OBD_FREE(old, sizeof(*old) * oldsize); CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts, lmv->tgts_size); } OBD_ALLOC_PTR(tgt); if (!tgt) { lmv_init_unlock(lmv); RETURN(-ENOMEM); } mutex_init(&tgt->ltd_fid_mutex); tgt->ltd_idx = index; tgt->ltd_uuid = *uuidp; tgt->ltd_active = 0; lmv->tgts[index] = tgt; if (index >= lmv->desc.ld_tgt_count) lmv->desc.ld_tgt_count = index + 1; 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); } } lmv_init_unlock(lmv); RETURN(rc); } int lmv_check_connect(struct obd_device *obd) { struct lmv_obd *lmv = &obd->u.lmv; struct lmv_tgt_desc *tgt; int i; int rc; int easize; ENTRY; if (lmv->connected) RETURN(0); lmv_init_lock(lmv); if (lmv->connected) { lmv_init_unlock(lmv); RETURN(0); } if (lmv->desc.ld_tgt_count == 0) { lmv_init_unlock(lmv); CERROR("%s: no targets configured.\n", obd->obd_name); RETURN(-EINVAL); } CDEBUG(D_CONFIG, "Time to connect %s to %s\n", lmv->cluuid.uuid, obd->obd_name); LASSERT(lmv->tgts != NULL); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { tgt = lmv->tgts[i]; if (tgt == NULL) continue; 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 = lmv->tgts[i]; if (tgt == NULL) continue; 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_force = obd->obd_force; mdc_obd->obd_fail = obd->obd_fail; 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->exp_obd); 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] == NULL || 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)); if ((index >= count)) RETURN(-ENODEV); if (lmv->tgts[index] == NULL || lmv->tgts[index]->ltd_active == 0) RETURN(-ENODATA); mdc_obd = class_exp2obd(lmv->tgts[index]->ltd_exp); if (!mdc_obd) RETURN(-EINVAL); /* copy UUID */ if (cfs_copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd), min((int) data->ioc_plen2, (int) sizeof(struct obd_uuid)))) RETURN(-EFAULT); rc = obd_statfs(NULL, lmv->tgts[index]->ltd_exp, &stat_buf, cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0); if (rc) RETURN(rc); if (cfs_copy_to_user(data->ioc_pbuf1, &stat_buf, min((int) data->ioc_plen1, (int) sizeof(stat_buf)))) 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 == NULL || tgt->ltd_exp == NULL) RETURN(-EINVAL); } else if (qctl->qc_valid == QC_UUID) { for (i = 0; i < count; i++) { tgt = lmv->tgts[i]; if (tgt == NULL) continue; 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_SEND: case OBD_IOC_CHANGELOG_CLEAR: { struct ioc_changelog *icc = karg; if (icc->icc_mdtindex >= count) RETURN(-ENODEV); if (lmv->tgts[icc->icc_mdtindex] == NULL || lmv->tgts[icc->icc_mdtindex]->ltd_exp == NULL || lmv->tgts[icc->icc_mdtindex]->ltd_active == 0) RETURN(-ENODEV); rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex]->ltd_exp, sizeof(*icc), icc, NULL); break; } case LL_IOC_GET_CONNECT_FLAGS: { if (lmv->tgts[0] == NULL) RETURN(-ENODATA); rc = obd_iocontrol(cmd, lmv->tgts[0]->ltd_exp, len, karg, uarg); break; } case OBD_IOC_FID2PATH: { struct getinfo_fid2path *gf; struct lmv_tgt_desc *tgt; gf = (struct getinfo_fid2path *)karg; tgt = lmv_find_target(lmv, &gf->gf_fid); if (IS_ERR(tgt)) RETURN(PTR_ERR(tgt)); rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); break; } default: for (i = 0; i < count; i++) { struct obd_device *mdc_obd; int err; if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) continue; /* ll_umount_begin() sets force flag but for lmv, not * mdc. Let's pass it through */ mdc_obd = class_exp2obd(lmv->tgts[i]->ltd_exp); mdc_obd->obd_force = obddev->obd_force; 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); } #if 0 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; } #endif /** * 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) { LASSERT(mds != NULL); /* Allocate new fid on target according to to different * QOS policy. In DNE phase I, llite should always tell * which MDT where the dir will be located */ *mds = op_data->op_mds; RETURN(0); } 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. */ mutex_lock(&tgt->ltd_fid_mutex); if (tgt == NULL || tgt->ltd_active == 0 || tgt->ltd_exp == NULL) 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: mutex_unlock(&tgt->ltd_fid_mutex); 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 = 0; 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_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; 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); } OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * 32); if (lmv->tgts == NULL) RETURN(-ENOMEM); lmv->tgts_size = 32; 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; spin_lock_init(&lmv->lmv_lock); mutex_init(&lmv->init_mutex); lprocfs_lmv_init_vars(&lvars); lprocfs_obd_setup(obd, lvars.obd_vars); #ifdef LPROCFS { rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd", 0444, &lmv_proc_target_fops, obd); if (rc) CWARN("%s: error adding LMV target_obd file: rc = %d\n", obd->obd_name, 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, rc); } RETURN(0); out: return rc; } static int lmv_cleanup(struct obd_device *obd) { struct lmv_obd *lmv = &obd->u.lmv; ENTRY; fld_client_fini(&lmv->lmv_fld); if (lmv->tgts != NULL) { int i; for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i] == NULL) continue; lmv_del_target(lmv, i); } OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size); lmv->tgts_size = 0; } RETURN(0); } static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf) { struct lustre_cfg *lcfg = buf; struct obd_uuid obd_uuid; int gen; __u32 index; int rc; ENTRY; switch (lcfg->lcfg_command) { case LCFG_ADD_MDC: /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */ if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) GOTO(out, rc = -EINVAL); obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1) GOTO(out, rc = -EINVAL); if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1) GOTO(out, rc = -EINVAL); rc = lmv_add_target(obd, &obd_uuid, index, gen); GOTO(out, rc); default: CERROR("Unknown command: %d\n", lcfg->lcfg_command); GOTO(out, rc = -EINVAL); } out: RETURN(rc); } static int lmv_statfs(const struct lu_env *env, struct obd_export *exp, struct obd_statfs *osfs, __u64 max_age, __u32 flags) { struct obd_device *obd = class_exp2obd(exp); 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); OBD_ALLOC(temp, sizeof(*temp)); if (temp == NULL) RETURN(-ENOMEM); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) continue; rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, 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, rc); GOTO(out_free_temp, rc); } if (i == 0) { *osfs = *temp; /* If the statfs is from mount, it will needs * retrieve necessary information from MDT0. * i.e. mount does not need the merged osfs * from all of MDT. * And also clients can be mounted as long as * MDT0 is in service*/ if (flags & OBD_STATFS_FOR_MDT0) GOTO(out_free_temp, rc); } else { osfs->os_bavail += temp->os_bavail; osfs->os_blocks += temp->os_blocks; osfs->os_ffree += temp->os_ffree; osfs->os_files += temp->os_files; } } EXIT; out_free_temp: OBD_FREE(temp, sizeof(*temp)); return rc; } 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; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); rc = md_getstatus(lmv->tgts[0]->ltd_exp, fid, pc); RETURN(rc); } 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; 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_getxattr(tgt->ltd_exp, fid, oc, valid, name, input, input_size, output_size, flags, request); RETURN(rc); } 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); 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, 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; int rc; 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)); if (op_data->op_flags & MF_GET_MDT_IDX) { op_data->op_mds = tgt->ltd_idx; RETURN(0); } rc = md_getattr(tgt->ltd_exp, op_data, request); RETURN(rc); } 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; int i; int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid)); /* * With DNE every object can have two locks in different namespaces: * lookup lock in space of MDT storing direntry and update/open lock in * space of MDT storing inode. */ for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) continue; md_change_cbdata(lmv->tgts[i]->ltd_exp, fid, it, data); } RETURN(0); } static int lmv_find_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; int i; int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid)); /* * With DNE every object can have two locks in different namespaces: * lookup lock in space of MDT storing direntry and update/open lock in * space of MDT storing inode. */ for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL) continue; rc = md_find_cbdata(lmv->tgts[i]->ltd_exp, fid, it, data); if (rc) RETURN(rc); } RETURN(rc); } 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; struct lmv_tgt_desc *tgt; int rc; 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)); CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1)); rc = md_close(tgt->ltd_exp, op_data, mod, request); RETURN(rc); } struct lmv_tgt_desc *lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data, struct lu_fid *fid) { struct lmv_tgt_desc *tgt; tgt = lmv_find_target(lmv, fid); op_data->op_mds = tgt->ltd_idx; return tgt; } int lmv_create(struct obd_export *exp, struct md_op_data *op_data, const void *data, int datalen, int mode, __u32 uid, __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 lmv_tgt_desc *tgt; int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); if (!lmv->desc.ld_active_tgt_count) RETURN(-EIO); tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); if (IS_ERR(tgt)) RETURN(PTR_ERR(tgt)); rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data); 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); CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2)); } RETURN(rc); } 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; struct lmv_tgt_desc *tgt; int rc; 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)); rc = md_done_writing(tgt->ltd_exp, op_data, mod); RETURN(rc); } static int 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 = 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 = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); LASSERT(body != NULL); if (!(body->valid & OBD_MD_MDS)) RETURN(0); 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 = it->d.lustre.it_lock_mode; LASSERT(pmode != 0); memcpy(&plock, lockh, sizeof(plock)); it->d.lustre.it_lock_mode = 0; it->d.lustre.it_data = NULL; fid1 = body->fid1; it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE; ptlrpc_req_finished(req); 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; } static int 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, __u64 extra_lock_flags) { 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_INODE, "ENQUEUE '%s' on "DFID"\n", LL_IT2STR(it), PFID(&op_data->op_fid1)); tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); 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); } RETURN(rc); } static int lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data, struct ptlrpc_request **request) { struct ptlrpc_request *req = NULL; struct obd_device *obd = exp->exp_obd; struct lmv_obd *lmv = &obd->u.lmv; struct lmv_tgt_desc *tgt; struct mdt_body *body; int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); if (IS_ERR(tgt)) RETURN(PTR_ERR(tgt)); CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n", op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1), tgt->ltd_idx); rc = md_getattr_name(tgt->ltd_exp, op_data, request); if (rc != 0) RETURN(rc); body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY); LASSERT(body != NULL); if (body->valid & OBD_MD_MDS) { struct lu_fid 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)); } op_data->op_fid1 = rid; op_data->op_valid |= OBD_MD_FLCROSSREF; op_data->op_namelen = 0; op_data->op_name = NULL; rc = md_getattr_name(tgt->ltd_exp, op_data, &req); ptlrpc_req_finished(*request); *request = req; } 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(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}}; int rc = 0; ENTRY; if (!fid_is_sane(fid)) RETURN(0); 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, LCF_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 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 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; int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); LASSERT(op_data->op_namelen != 0); 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)); op_data->op_fsuid = cfs_curproc_fsuid(); op_data->op_fsgid = cfs_curproc_fsgid(); op_data->op_cap = cfs_curproc_cap_pack(); tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2); if (IS_ERR(tgt)) RETURN(PTR_ERR(tgt)); /* * 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) RETURN(rc); rc = md_link(tgt->ltd_exp, op_data, request); RETURN(rc); } 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_tgt_desc *src_tgt; struct lmv_tgt_desc *tgt_tgt; int rc; ENTRY; LASSERT(oldlen != 0); 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)); rc = lmv_check_connect(obd); if (rc) RETURN(rc); op_data->op_fsuid = cfs_curproc_fsuid(); op_data->op_fsgid = cfs_curproc_fsgid(); op_data->op_cap = cfs_curproc_cap_pack(); src_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); if (IS_ERR(src_tgt)) RETURN(PTR_ERR(src_tgt)); tgt_tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2); if (IS_ERR(tgt_tgt)) RETURN(PTR_ERR(tgt_tgt)); /* * 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); RETURN(rc); } 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 lmv_tgt_desc *tgt; int rc = 0; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n", PFID(&op_data->op_fid1), op_data->op_attr.ia_valid); op_data->op_flags |= MF_MDC_CANCEL_FID1; 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, 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; 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_sync(tgt->ltd_exp, fid, oc, request); RETURN(rc); } static int lmv_readpage(struct obd_export *exp, struct md_op_data *op_data, struct page **pages, struct ptlrpc_request **request) { struct obd_device *obd = exp->exp_obd; struct lmv_obd *lmv = &obd->u.lmv; __u64 offset = op_data->op_offset; int rc; int i; /* number of pages read, in CFS_PAGE_SIZE */ int nrdpgs; /* number of pages transferred in LU_PAGE_SIZE */ int nlupgs; struct lmv_tgt_desc *tgt; struct lu_dirpage *dp; struct lu_dirent *ent; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); CDEBUG(D_INODE, "READPAGE at "LPX64" from "DFID"\n", offset, PFID(&op_data->op_fid1)); /* * 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. * Since these codes might be still useful for sharded directory, so * Keeping this code for further reference if (0) { 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; hash_adj += rank * seg_size; CDEBUG(D_INODE, "Readpage hash adjustment: %x "LPX64" " LPX64"/%x -> "LPX64"/%x\n", rank, hash_adj, offset, tgt0_idx, offset + hash_adj, tgt_idx); offset = (offset + hash_adj) & MAX_HASH_SIZE; rid = lsm->mea_oinfo[tgt_idx].lmo_fid; tgt = lmv_get_target(lmv, lsm->mea_oinfo[tgt_idx].lmo_mds); CDEBUG(D_INODE, "Forward to "DFID" with offset %lu i %d\n", PFID(&rid), (unsigned long)offset, tgt_idx); } */ tgt = lmv_find_target(lmv, &op_data->op_fid1); if (IS_ERR(tgt)) RETURN(PTR_ERR(tgt)); rc = md_readpage(tgt->ltd_exp, op_data, pages, request); if (rc != 0) RETURN(rc); nrdpgs = ((*request)->rq_bulk->bd_nob_transferred + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT; nlupgs = (*request)->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT; LASSERT(!((*request)->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK)); LASSERT(nrdpgs > 0 && nrdpgs <= op_data->op_npages); CDEBUG(D_INODE, "read %d(%d)/%d pages\n", nrdpgs, nlupgs, op_data->op_npages); for (i = 0; i < nrdpgs; i++) { #if CFS_PAGE_SIZE > LU_PAGE_SIZE struct lu_dirpage *first; __u64 hash_end = 0; __u32 flags = 0; #endif struct lu_dirent *tmp = NULL; dp = cfs_kmap(pages[i]); ent = lu_dirent_start(dp); #if CFS_PAGE_SIZE > LU_PAGE_SIZE first = dp; hash_end = dp->ldp_hash_end; repeat: #endif nlupgs--; for (tmp = ent; ent != NULL; tmp = ent, ent = lu_dirent_next(ent)); #if CFS_PAGE_SIZE > LU_PAGE_SIZE dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE); if (((unsigned long)dp & ~CFS_PAGE_MASK) && nlupgs > 0) { ent = lu_dirent_start(dp); if (tmp) { /* enlarge the end entry lde_reclen from 0 to * first entry of next lu_dirpage, in this way * several lu_dirpages can be stored into one * client page on client. */ tmp = ((void *)tmp) + le16_to_cpu(tmp->lde_reclen); tmp->lde_reclen = cpu_to_le16((char *)(dp->ldp_entries) - (char *)tmp); goto repeat; } } first->ldp_hash_end = hash_end; first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE); first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE); #else SET_BUT_UNUSED(tmp); #endif cfs_kunmap(pages[i]); } 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; int rc; ENTRY; rc = lmv_check_connect(obd); if (rc) RETURN(rc); tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); if (IS_ERR(tgt)) RETURN(PTR_ERR(tgt)); op_data->op_fsuid = cfs_curproc_fsuid(); op_data->op_fsgid = cfs_curproc_fsgid(); op_data->op_cap = cfs_curproc_cap_pack(); /* * 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; /* * 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); if (rc != 0) RETURN(rc); rc = md_unlink(tgt->ltd_exp, op_data, request); RETURN(rc); } static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) { struct lmv_obd *lmv = &obd->u.lmv; int rc = 0; switch (stage) { case OBD_CLEANUP_EARLY: /* XXX: here should be calling obd_precleanup() down to * stack. */ break; case OBD_CLEANUP_EXPORTS: fld_client_proc_fini(&lmv->lmv_fld); lprocfs_obd_cleanup(obd); break; default: break; } RETURN(rc); } static int lmv_get_info(const struct lu_env *env, struct obd_export *exp, __u32 keylen, void *key, __u32 *vallen, void *val, struct lov_stripe_md *lsm) { 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", exp->exp_handle.h_cookie); RETURN(-EINVAL); } lmv = &obd->u.lmv; if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) { struct lmv_tgt_desc *tgt; int i; rc = lmv_check_connect(obd); if (rc) RETURN(rc); LASSERT(*vallen == sizeof(__u32)); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { tgt = lmv->tgts[i]; /* * All tgts should be connected when this gets called. */ if (tgt == NULL || tgt->ltd_exp == NULL) continue; if (!obd_get_info(env, tgt->ltd_exp, keylen, key, vallen, val, NULL)) RETURN(0); } RETURN(-EINVAL); } 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. */ rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key, vallen, val, NULL); if (!rc && KEY_IS(KEY_CONN_DATA)) { exp->exp_connect_flags = ((struct obd_connect_data *)val)->ocd_connect_flags; } RETURN(rc); } else if (KEY_IS(KEY_TGT_COUNT)) { *((int *)val) = lmv->desc.ld_tgt_count; RETURN(0); } CDEBUG(D_IOCTL, "Invalid key\n"); RETURN(-EINVAL); } int lmv_set_info_async(const struct lu_env *env, 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", exp->exp_handle.h_cookie); RETURN(-EINVAL); } lmv = &obd->u.lmv; if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX)) { int i, err = 0; for (i = 0; i < lmv->desc.ld_tgt_count; i++) { tgt = lmv->tgts[i]; if (tgt == NULL || tgt->ltd_exp == NULL) continue; err = obd_set_info_async(env, tgt->ltd_exp, keylen, key, vallen, val, set); if (err && rc == 0) rc = err; } RETURN(rc); } 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 lmv_stripe_md *meap; struct lmv_stripe_md *lsmp; int mea_size; int i; ENTRY; mea_size = lmv_get_easize(lmv); if (!lmmp) RETURN(mea_size); if (*lmmp && !lsm) { OBD_FREE_LARGE(*lmmp, mea_size); *lmmp = NULL; RETURN(0); } if (*lmmp == NULL) { OBD_ALLOC_LARGE(*lmmp, mea_size); if (*lmmp == NULL) RETURN(-ENOMEM); } if (!lsm) RETURN(mea_size); 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) RETURN(-EINVAL); meap->mea_magic = cpu_to_le32(lsmp->mea_magic); meap->mea_count = cpu_to_le32(lsmp->mea_count); meap->mea_master = cpu_to_le32(lsmp->mea_master); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { meap->mea_ids[i] = meap->mea_ids[i]; fid_cpu_to_le(&meap->mea_ids[i], &meap->mea_ids[i]); } RETURN(mea_size); } 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 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 = lmv_get_easize(lmv); if (lsmp == NULL) return mea_size; if (*lsmp != NULL && lmm == NULL) { OBD_FREE_LARGE(*tmea, mea_size); *lsmp = NULL; RETURN(0); } LASSERT(mea_size == lmm_size); OBD_ALLOC_LARGE(*tmea, mea_size); if (*tmea == NULL) RETURN(-ENOMEM); if (!lmm) RETURN(mea_size); if (mea->mea_magic == MEA_MAGIC_LAST_CHAR || mea->mea_magic == MEA_MAGIC_ALL_CHARS || mea->mea_magic == MEA_MAGIC_HASH_SEGMENT) { magic = le32_to_cpu(mea->mea_magic); } else { /* * Old mea is not handled here. */ CERROR("Old not supportable EA is found\n"); LBUG(); } (*tmea)->mea_magic = magic; (*tmea)->mea_count = le32_to_cpu(mea->mea_count); (*tmea)->mea_master = le32_to_cpu(mea->mea_master); for (i = 0; i < (*tmea)->mea_count; i++) { (*tmea)->mea_ids[i] = mea->mea_ids[i]; fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]); } RETURN(mea_size); } static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid, ldlm_policy_data_t *policy, ldlm_mode_t mode, ldlm_cancel_flags_t flags, void *opaque) { struct obd_device *obd = exp->exp_obd; struct lmv_obd *lmv = &obd->u.lmv; int rc = 0; int err; int i; ENTRY; LASSERT(fid != NULL); for (i = 0; i < lmv->desc.ld_tgt_count; i++) { if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL || lmv->tgts[i]->ltd_active == 0) continue; 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, __u64 *bits) { struct lmv_obd *lmv = &exp->exp_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, __u64 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++) { if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL || lmv->tgts[i]->ltd_active == 0) continue; 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 lmv_obd *lmv = &exp->exp_obd->u.lmv; return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md); } 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 lmv_obd *lmv = &exp->exp_obd->u.lmv; return md_unpack_capa(lmv->tgts[0]->ltd_exp, req, field, oc); } 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_tgt_desc *tgt = NULL; int rc; 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)); 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, __u64 *bits) { 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, bits); RETURN(rc); } /** * For lmv, only need to send request to master MDT, and the master MDT will * process with other slave MDTs. The only exception is Q_GETOQUOTA for which * we directly fetch data from the slave MDTs. */ int lmv_quotactl(struct obd_device *unused, struct obd_export *exp, struct obd_quotactl *oqctl) { struct obd_device *obd = class_exp2obd(exp); struct lmv_obd *lmv = &obd->u.lmv; struct lmv_tgt_desc *tgt = lmv->tgts[0]; int rc = 0, i; __u64 curspace, curinodes; ENTRY; if (!lmv->desc.ld_tgt_count || !tgt->ltd_active) { CERROR("master lmv inactive\n"); RETURN(-EIO); } if (oqctl->qc_cmd != Q_GETOQUOTA) { rc = obd_quotactl(tgt->ltd_exp, oqctl); RETURN(rc); } curspace = curinodes = 0; for (i = 0; i < lmv->desc.ld_tgt_count; i++) { int err; tgt = lmv->tgts[i]; if (tgt == NULL || tgt->ltd_exp == NULL || tgt->ltd_active == 0) continue; if (!tgt->ltd_active) { CDEBUG(D_HA, "mdt %d is inactive.\n", i); continue; } err = obd_quotactl(tgt->ltd_exp, oqctl); if (err) { CERROR("getquota on mdt %d failed. %d\n", i, err); if (!rc) rc = err; } else { curspace += oqctl->qc_dqblk.dqb_curspace; curinodes += oqctl->qc_dqblk.dqb_curinodes; } } oqctl->qc_dqblk.dqb_curspace = curspace; oqctl->qc_dqblk.dqb_curinodes = curinodes; RETURN(rc); } int lmv_quotacheck(struct obd_device *unused, struct obd_export *exp, struct obd_quotactl *oqctl) { struct obd_device *obd = class_exp2obd(exp); struct lmv_obd *lmv = &obd->u.lmv; struct lmv_tgt_desc *tgt; int i, rc = 0; ENTRY; for (i = 0; i < lmv->desc.ld_tgt_count; i++) { int err; tgt = lmv->tgts[i]; if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) { CERROR("lmv idx %d inactive\n", i); RETURN(-EIO); } err = obd_quotacheck(tgt->ltd_exp, oqctl); if (err && !rc) rc = err; } RETURN(rc); } struct obd_ops lmv_obd_ops = { .o_owner = THIS_MODULE, .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_get_info = lmv_get_info, .o_set_info_async = lmv_set_info_async, .o_packmd = lmv_packmd, .o_unpackmd = lmv_unpackmd, .o_notify = lmv_notify, .o_get_uuid = lmv_get_uuid, .o_iocontrol = lmv_iocontrol, .o_quotacheck = lmv_quotacheck, .o_quotactl = lmv_quotactl }; struct md_ops lmv_md_ops = { .m_getstatus = lmv_getstatus, .m_change_cbdata = lmv_change_cbdata, .m_find_cbdata = lmv_find_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 }; int __init lmv_init(void) { struct lprocfs_static_vars lvars; int rc; lprocfs_lmv_init_vars(&lvars); rc = class_register_type(&lmv_obd_ops, &lmv_md_ops, lvars.module_vars, LUSTRE_LMV_NAME, NULL); return rc; } #ifdef __KERNEL__ static void lmv_exit(void) { class_unregister_type(LUSTRE_LMV_NAME); } MODULE_AUTHOR("Sun Microsystems, Inc. "); MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver"); MODULE_LICENSE("GPL"); module_init(lmv_init); module_exit(lmv_exit); #endif