diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/lmv/lmv_obd.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/lmv/lmv_obd.c | 3131 |
1 files changed, 0 insertions, 3131 deletions
diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c deleted file mode 100644 index e8a9b9902c37..000000000000 --- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c +++ /dev/null @@ -1,3131 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2015, 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 -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/pagemap.h> -#include <linux/mm.h> -#include <asm/div64.h> -#include <linux/seq_file.h> -#include <linux/namei.h> -#include <linux/uaccess.h> - -#include <obd_support.h> -#include <lustre_net.h> -#include <obd_class.h> -#include <lustre_lmv.h> -#include <lprocfs_status.h> -#include <cl_object.h> -#include <lustre_fid.h> -#include <uapi/linux/lustre/lustre_ioctl.h> -#include <lustre_kernelcomm.h> -#include "lmv_internal.h" - -static int lmv_check_connect(struct obd_device *obd); - -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); - tgt->ltd_exp->exp_obd->obd_inactive = !activate; -} - -/** - * 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, const struct obd_uuid *uuid, - int activate) -{ - struct lmv_tgt_desc *tgt = NULL; - struct obd_device *obd; - u32 i; - int rc = 0; - - 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 || !tgt->ltd_exp) - continue; - - CDEBUG(D_INFO, "Target idx %d is %s conn %#llx\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) { - rc = -EINVAL; - goto out_lmv_lock; - } - - obd = class_exp2obd(tgt->ltd_exp); - if (!obd) { - rc = -ENOTCONN; - goto out_lmv_lock; - } - - 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; - } - - CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd, - activate ? "" : "in"); - lmv_activate_target(lmv, tgt, activate); - - out_lmv_lock: - spin_unlock(&lmv->lmv_lock); - return rc; -} - -static struct obd_uuid *lmv_get_uuid(struct obd_export *exp) -{ - struct lmv_obd *lmv = &exp->exp_obd->u.lmv; - struct lmv_tgt_desc *tgt = lmv->tgts[0]; - - return tgt ? obd_get_uuid(tgt->ltd_exp) : NULL; -} - -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; - - 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_data = *conn_data; - } - - /* - * Pass the notification up the chain. - */ - if (obd->obd_observer) - rc = obd_notify(obd->obd_observer, watched, ev, data); - - return rc; -} - -static int lmv_connect(const struct lu_env *env, - struct obd_export **pexp, struct obd_device *obd, - struct obd_uuid *cluuid, struct obd_connect_data *data, - void *localdata) -{ - struct lmv_obd *lmv = &obd->u.lmv; - struct lustre_handle conn = { 0 }; - struct obd_export *exp; - int rc = 0; - - rc = class_connect(&conn, obd, cluuid); - if (rc) { - CERROR("class_connection() returned %d\n", rc); - return rc; - } - - exp = class_conn2export(&conn); - - lmv->connected = 0; - lmv->cluuid = *cluuid; - lmv->conn_data = *data; - - lmv->lmv_tgts_kobj = kobject_create_and_add("target_obds", - &obd->obd_kobj); - rc = lmv_check_connect(obd); - if (rc) - goto out_sysfs; - - *pexp = exp; - - return rc; - -out_sysfs: - if (lmv->lmv_tgts_kobj) - kobject_put(lmv->lmv_tgts_kobj); - - class_disconnect(exp); - - return rc; -} - -static int lmv_init_ea_size(struct obd_export *exp, u32 easize, u32 def_easize) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - u32 i; - int rc = 0; - int change = 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 (change == 0) - return 0; - - if (lmv->connected == 0) - return 0; - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - struct lmv_tgt_desc *tgt = lmv->tgts[i]; - - if (!tgt || !tgt->ltd_exp || !tgt->ltd_active) { - CWARN("%s: NULL export for %d\n", obd->obd_name, i); - continue; - } - - rc = md_init_ea_size(tgt->ltd_exp, easize, def_easize); - 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 - -static int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt) -{ - struct lmv_obd *lmv = &obd->u.lmv; - struct obd_uuid *cluuid = &lmv->cluuid; - 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; - - 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); - - 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); - - CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n", - mdc_obd->obd_name, mdc_obd->obd_uuid.uuid, - atomic_read(&obd->obd_refcount)); - - if (lmv->lmv_tgts_kobj) - /* Even if we failed to create the link, that's fine */ - rc = sysfs_create_link(lmv->lmv_tgts_kobj, &mdc_obd->obd_kobj, - mdc_obd->obd_name); - return 0; -} - -static void lmv_del_target(struct lmv_obd *lmv, int index) -{ - if (!lmv->tgts[index]) - return; - - kfree(lmv->tgts[index]); - lmv->tgts[index] = NULL; -} - -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 obd_device *mdc_obd; - struct lmv_tgt_desc *tgt; - int orig_tgt_count = 0; - int rc = 0; - - CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index); - - mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME, - &obd->obd_uuid); - if (!mdc_obd) { - CERROR("%s: Target %s not attached: rc = %d\n", - obd->obd_name, uuidp->uuid, -EINVAL); - return -EINVAL; - } - - mutex_lock(&lmv->lmv_init_mutex); - - if ((index < lmv->tgts_size) && lmv->tgts[index]) { - 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); - mutex_unlock(&lmv->lmv_init_mutex); - 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 <<= 1; - newtgts = kcalloc(newsize, sizeof(*newtgts), GFP_NOFS); - if (!newtgts) { - mutex_unlock(&lmv->lmv_init_mutex); - 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(); - kfree(old); - - CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts, - lmv->tgts_size); - } - - tgt = kzalloc(sizeof(*tgt), GFP_NOFS); - if (!tgt) { - mutex_unlock(&lmv->lmv_init_mutex); - 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) { - orig_tgt_count = lmv->desc.ld_tgt_count; - lmv->desc.ld_tgt_count = index + 1; - } - - if (!lmv->connected) { - /* lmv_check_connect() will connect this target. */ - mutex_unlock(&lmv->lmv_init_mutex); - return rc; - } - - /* Otherwise let's connect it ourselves */ - mutex_unlock(&lmv->lmv_init_mutex); - rc = lmv_connect_mdc(obd, tgt); - if (rc) { - spin_lock(&lmv->lmv_lock); - if (lmv->desc.ld_tgt_count == index + 1) - lmv->desc.ld_tgt_count = orig_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); - } - - return rc; -} - -static int lmv_check_connect(struct obd_device *obd) -{ - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgt; - u32 i; - int rc; - int easize; - - if (lmv->connected) - return 0; - - mutex_lock(&lmv->lmv_init_mutex); - if (lmv->connected) { - mutex_unlock(&lmv->lmv_init_mutex); - return 0; - } - - if (lmv->desc.ld_tgt_count == 0) { - mutex_unlock(&lmv->lmv_init_mutex); - CERROR("%s: no targets configured.\n", obd->obd_name); - return -EINVAL; - } - - LASSERT(lmv->tgts); - - if (!lmv->tgts[0]) { - mutex_unlock(&lmv->lmv_init_mutex); - CERROR("%s: no target configured for index 0.\n", - obd->obd_name); - return -EINVAL; - } - - CDEBUG(D_CONFIG, "Time to connect %s to %s\n", - lmv->cluuid.uuid, obd->obd_name); - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - tgt = lmv->tgts[i]; - if (!tgt) - continue; - rc = lmv_connect_mdc(obd, tgt); - if (rc) - goto out_disc; - } - - lmv->connected = 1; - easize = lmv_mds_md_size(lmv->desc.ld_tgt_count, LMV_MAGIC); - lmv_init_ea_size(obd->obd_self_export, easize, 0); - mutex_unlock(&lmv->lmv_init_mutex); - return 0; - - out_disc: - while (i-- > 0) { - int rc2; - - tgt = lmv->tgts[i]; - if (!tgt) - 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); - } - } - } - - mutex_unlock(&lmv->lmv_init_mutex); - return rc; -} - -static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt) -{ - struct lmv_obd *lmv = &obd->u.lmv; - struct obd_device *mdc_obd; - int rc; - - 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; - - if (lmv->lmv_tgts_kobj) - sysfs_remove_link(lmv->lmv_tgts_kobj, - mdc_obd->obd_name); - } - - rc = obd_fid_fini(tgt->ltd_exp->exp_obd); - if (rc) - CERROR("Can't finalize 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); - struct lmv_obd *lmv = &obd->u.lmv; - int rc; - u32 i; - - if (!lmv->tgts) - goto out_local; - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp) - continue; - - lmv_disconnect_mdc(obd, lmv->tgts[i]); - } - - if (lmv->lmv_tgts_kobj) - kobject_put(lmv->lmv_tgts_kobj); - -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); - lmv->connected = 0; - return rc; -} - -static int lmv_fid2path(struct obd_export *exp, int len, void *karg, - void __user *uarg) -{ - struct obd_device *obddev = class_exp2obd(exp); - struct lmv_obd *lmv = &obddev->u.lmv; - struct getinfo_fid2path *gf; - struct lmv_tgt_desc *tgt; - struct getinfo_fid2path *remote_gf = NULL; - int remote_gf_size = 0; - int rc; - - gf = karg; - tgt = lmv_find_target(lmv, &gf->gf_fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - -repeat_fid2path: - rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg); - if (rc != 0 && rc != -EREMOTE) - goto out_fid2path; - - /* If remote_gf != NULL, it means just building the - * path on the remote MDT, copy this path segment to gf - */ - if (remote_gf) { - struct getinfo_fid2path *ori_gf; - char *ptr; - - ori_gf = karg; - if (strlen(ori_gf->gf_path) + 1 + - strlen(gf->gf_path) + 1 > ori_gf->gf_pathlen) { - rc = -EOVERFLOW; - goto out_fid2path; - } - - ptr = ori_gf->gf_path; - - memmove(ptr + strlen(gf->gf_path) + 1, ptr, - strlen(ori_gf->gf_path)); - - strncpy(ptr, gf->gf_path, strlen(gf->gf_path)); - ptr += strlen(gf->gf_path); - *ptr = '/'; - } - - CDEBUG(D_INFO, "%s: get path %s " DFID " rec: %llu ln: %u\n", - tgt->ltd_exp->exp_obd->obd_name, - gf->gf_path, PFID(&gf->gf_fid), gf->gf_recno, - gf->gf_linkno); - - if (rc == 0) - goto out_fid2path; - - /* sigh, has to go to another MDT to do path building further */ - if (!remote_gf) { - remote_gf_size = sizeof(*remote_gf) + PATH_MAX; - remote_gf = kzalloc(remote_gf_size, GFP_NOFS); - if (!remote_gf) { - rc = -ENOMEM; - goto out_fid2path; - } - remote_gf->gf_pathlen = PATH_MAX; - } - - if (!fid_is_sane(&gf->gf_fid)) { - CERROR("%s: invalid FID " DFID ": rc = %d\n", - tgt->ltd_exp->exp_obd->obd_name, - PFID(&gf->gf_fid), -EINVAL); - rc = -EINVAL; - goto out_fid2path; - } - - tgt = lmv_find_target(lmv, &gf->gf_fid); - if (IS_ERR(tgt)) { - rc = -EINVAL; - goto out_fid2path; - } - - remote_gf->gf_fid = gf->gf_fid; - remote_gf->gf_recno = -1; - remote_gf->gf_linkno = -1; - memset(remote_gf->gf_path, 0, remote_gf->gf_pathlen); - gf = remote_gf; - goto repeat_fid2path; - -out_fid2path: - kfree(remote_gf); - return rc; -} - -static int lmv_hsm_req_count(struct lmv_obd *lmv, - const struct hsm_user_request *hur, - const struct lmv_tgt_desc *tgt_mds) -{ - u32 i, nr = 0; - struct lmv_tgt_desc *curr_tgt; - - /* count how many requests must be sent to the given target */ - for (i = 0; i < hur->hur_request.hr_itemcount; i++) { - curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid); - if (IS_ERR(curr_tgt)) - return PTR_ERR(curr_tgt); - if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) - nr++; - } - return nr; -} - -static int lmv_hsm_req_build(struct lmv_obd *lmv, - struct hsm_user_request *hur_in, - const struct lmv_tgt_desc *tgt_mds, - struct hsm_user_request *hur_out) -{ - int i, nr_out; - struct lmv_tgt_desc *curr_tgt; - - /* build the hsm_user_request for the given target */ - hur_out->hur_request = hur_in->hur_request; - nr_out = 0; - for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) { - curr_tgt = lmv_find_target(lmv, - &hur_in->hur_user_item[i].hui_fid); - if (IS_ERR(curr_tgt)) - return PTR_ERR(curr_tgt); - if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) { - hur_out->hur_user_item[nr_out] = - hur_in->hur_user_item[i]; - nr_out++; - } - } - hur_out->hur_request.hr_itemcount = nr_out; - memcpy(hur_data(hur_out), hur_data(hur_in), - hur_in->hur_request.hr_data_len); - - return 0; -} - -static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len, - struct lustre_kernelcomm *lk, - void __user *uarg) -{ - __u32 i; - - /* unregister request (call from llapi_hsm_copytool_fini) */ - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - struct lmv_tgt_desc *tgt = lmv->tgts[i]; - - if (!tgt || !tgt->ltd_exp) - continue; - - /* best effort: try to clean as much as possible - * (continue on error) - */ - obd_iocontrol(cmd, lmv->tgts[i]->ltd_exp, len, lk, uarg); - } - - /* Whatever the result, remove copytool from kuc groups. - * Unreached coordinators will get EPIPE on next requests - * and will unregister automatically. - */ - return libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group); -} - -static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len, - struct lustre_kernelcomm *lk, void __user *uarg) -{ - struct file *filp; - __u32 i, j; - int err, rc = 0; - bool any_set = false; - struct kkuc_ct_data kcd = { 0 }; - - /* All or nothing: try to register to all MDS. - * In case of failure, unregister from previous MDS, - * except if it because of inactive target. - */ - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - struct lmv_tgt_desc *tgt = lmv->tgts[i]; - - if (!tgt || !tgt->ltd_exp) - continue; - - err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg); - if (err) { - if (tgt->ltd_active) { - /* permanent error */ - CERROR("error: iocontrol MDC %s on MDTidx %d cmd %x: err = %d\n", - tgt->ltd_uuid.uuid, i, cmd, err); - rc = err; - lk->lk_flags |= LK_FLG_STOP; - /* unregister from previous MDS */ - for (j = 0; j < i; j++) { - tgt = lmv->tgts[j]; - - if (!tgt || !tgt->ltd_exp) - continue; - obd_iocontrol(cmd, tgt->ltd_exp, len, - lk, uarg); - } - return rc; - } - /* else: transient error. - * kuc will register to the missing MDT when it is back - */ - } else { - any_set = true; - } - } - - if (!any_set) - /* no registration done: return error */ - return -ENOTCONN; - - /* at least one registration done, with no failure */ - filp = fget(lk->lk_wfd); - if (!filp) - return -EBADF; - - kcd.kcd_magic = KKUC_CT_DATA_MAGIC; - kcd.kcd_uuid = lmv->cluuid; - kcd.kcd_archive = lk->lk_data; - - rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group, - &kcd, sizeof(kcd)); - if (rc) - fput(filp); - - return rc; -} - -static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp, - int len, void *karg, void __user *uarg) -{ - struct obd_device *obddev = class_exp2obd(exp); - struct lmv_obd *lmv = &obddev->u.lmv; - struct lmv_tgt_desc *tgt = NULL; - u32 i = 0; - int rc = 0; - int set = 0; - u32 count = lmv->desc.ld_tgt_count; - - 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; - - tgt = lmv->tgts[index]; - if (!tgt || !tgt->ltd_active) - return -ENODATA; - - mdc_obd = class_exp2obd(tgt->ltd_exp); - if (!mdc_obd) - return -EINVAL; - - /* copy UUID */ - if (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, tgt->ltd_exp, &stat_buf, - cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), - 0); - if (rc) - return rc; - if (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 obd_quotactl *oqctl; - - if (qctl->qc_valid == QC_MDTIDX) { - if (count <= qctl->qc_idx) - return -EINVAL; - - tgt = lmv->tgts[qctl->qc_idx]; - if (!tgt || !tgt->ltd_exp) - return -EINVAL; - } else if (qctl->qc_valid == QC_UUID) { - for (i = 0; i < count; i++) { - tgt = lmv->tgts[i]; - if (!tgt) - continue; - if (!obd_uuid_equals(&tgt->ltd_uuid, - &qctl->obd_uuid)) - continue; - - if (!tgt->ltd_exp) - return -EINVAL; - - break; - } - } else { - return -EINVAL; - } - - if (i >= count) - return -EAGAIN; - - LASSERT(tgt && tgt->ltd_exp); - oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS); - 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; - } - kfree(oqctl); - break; - } - case OBD_IOC_CHANGELOG_SEND: - case OBD_IOC_CHANGELOG_CLEAR: { - struct ioc_changelog *icc = karg; - - if (icc->icc_mdtindex >= count) - return -ENODEV; - - tgt = lmv->tgts[icc->icc_mdtindex]; - if (!tgt || !tgt->ltd_exp || !tgt->ltd_active) - return -ENODEV; - rc = obd_iocontrol(cmd, tgt->ltd_exp, sizeof(*icc), icc, NULL); - break; - } - case LL_IOC_GET_CONNECT_FLAGS: { - tgt = lmv->tgts[0]; - - if (!tgt || !tgt->ltd_exp) - return -ENODATA; - rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); - break; - } - case LL_IOC_FID2MDTIDX: { - struct lu_fid *fid = karg; - int mdt_index; - - rc = lmv_fld_lookup(lmv, fid, &mdt_index); - if (rc) - return rc; - - /* - * Note: this is from llite(see ll_dir_ioctl()), @uarg does not - * point to user space memory for FID2MDTIDX. - */ - *(__u32 *)uarg = mdt_index; - break; - } - case OBD_IOC_FID2PATH: { - rc = lmv_fid2path(exp, len, karg, uarg); - break; - } - case LL_IOC_HSM_STATE_GET: - case LL_IOC_HSM_STATE_SET: - case LL_IOC_HSM_ACTION: { - struct md_op_data *op_data = karg; - - tgt = lmv_find_target(lmv, &op_data->op_fid1); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - if (!tgt->ltd_exp) - return -EINVAL; - - rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); - break; - } - case LL_IOC_HSM_PROGRESS: { - const struct hsm_progress_kernel *hpk = karg; - - tgt = lmv_find_target(lmv, &hpk->hpk_fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); - break; - } - case LL_IOC_HSM_REQUEST: { - struct hsm_user_request *hur = karg; - unsigned int reqcount = hur->hur_request.hr_itemcount; - - if (reqcount == 0) - return 0; - - /* if the request is about a single fid - * or if there is a single MDS, no need to split - * the request. - */ - if (reqcount == 1 || count == 1) { - tgt = lmv_find_target(lmv, - &hur->hur_user_item[0].hui_fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); - } else { - /* split fid list to their respective MDS */ - for (i = 0; i < count; i++) { - struct hsm_user_request *req; - size_t reqlen; - int nr, rc1; - - tgt = lmv->tgts[i]; - if (!tgt || !tgt->ltd_exp) - continue; - - nr = lmv_hsm_req_count(lmv, hur, tgt); - if (nr < 0) - return nr; - if (nr == 0) /* nothing for this MDS */ - continue; - - /* build a request with fids for this MDS */ - reqlen = offsetof(typeof(*hur), - hur_user_item[nr]) - + hur->hur_request.hr_data_len; - req = kvzalloc(reqlen, GFP_NOFS); - if (!req) - return -ENOMEM; - - rc1 = lmv_hsm_req_build(lmv, hur, tgt, req); - if (rc1 < 0) - goto hsm_req_err; - - rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen, - req, uarg); -hsm_req_err: - if (rc1 != 0 && rc == 0) - rc = rc1; - kvfree(req); - } - } - break; - } - case LL_IOC_LOV_SWAP_LAYOUTS: { - struct md_op_data *op_data = karg; - struct lmv_tgt_desc *tgt1, *tgt2; - - tgt1 = lmv_find_target(lmv, &op_data->op_fid1); - if (IS_ERR(tgt1)) - return PTR_ERR(tgt1); - - tgt2 = lmv_find_target(lmv, &op_data->op_fid2); - if (IS_ERR(tgt2)) - return PTR_ERR(tgt2); - - if (!tgt1->ltd_exp || !tgt2->ltd_exp) - return -EINVAL; - - /* only files on same MDT can have their layouts swapped */ - if (tgt1->ltd_idx != tgt2->ltd_idx) - return -EPERM; - - rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg); - break; - } - case LL_IOC_HSM_CT_START: { - struct lustre_kernelcomm *lk = karg; - - if (lk->lk_flags & LK_FLG_STOP) - rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg); - else - rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg); - break; - } - default: - for (i = 0; i < count; i++) { - struct obd_device *mdc_obd; - int err; - - tgt = lmv->tgts[i]; - if (!tgt || !tgt->ltd_exp) - continue; - /* ll_umount_begin() sets force flag but for lmv, not - * mdc. Let's pass it through - */ - mdc_obd = class_exp2obd(tgt->ltd_exp); - mdc_obd->obd_force = obddev->obd_force; - err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg); - if (err) { - if (tgt->ltd_active) { - CERROR("%s: error: iocontrol MDC %s on MDTidx %d cmd %x: err = %d\n", - lmv2obd_dev(lmv)->obd_name, - tgt->ltd_uuid.uuid, i, cmd, err); - if (!rc) - rc = err; - } - } else { - set = 1; - } - } - if (!set && !rc) - rc = -EIO; - } - return rc; -} - -/** - * This is _inode_ placement policy function (not name). - */ -static int lmv_placement_policy(struct obd_device *obd, - struct md_op_data *op_data, u32 *mds) -{ - struct lmv_obd *lmv = &obd->u.lmv; - - LASSERT(mds); - - if (lmv->desc.ld_tgt_count == 1) { - *mds = 0; - return 0; - } - - if (op_data->op_default_stripe_offset != -1) { - *mds = op_data->op_default_stripe_offset; - return 0; - } - - /** - * If stripe_offset is provided during setdirstripe - * (setdirstripe -i xx), xx MDS will be chosen. - */ - if (op_data->op_cli_flags & CLI_SET_MEA && op_data->op_data) { - struct lmv_user_md *lum; - - lum = op_data->op_data; - if (le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) { - *mds = le32_to_cpu(lum->lum_stripe_offset); - } else { - /* - * -1 means default, which will be in the same MDT with - * the stripe - */ - *mds = op_data->op_mds; - lum->lum_stripe_offset = cpu_to_le32(op_data->op_mds); - } - } else { - /* - * Allocate new fid on target according to operation type and - * parent home mds. - */ - *mds = op_data->op_mds; - } - - return 0; -} - -int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds) -{ - struct lmv_tgt_desc *tgt; - int rc; - - tgt = lmv_get_target(lmv, mds, NULL); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - /* - * 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->ltd_active == 0 || !tgt->ltd_exp) { - rc = -ENODEV; - goto out; - } - - /* - * Asking underlaying tgt layer to allocate new fid. - */ - rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL); - if (rc > 0) { - LASSERT(fid_is_sane(fid)); - rc = 0; - } - -out: - mutex_unlock(&tgt->ltd_fid_mutex); - return rc; -} - -int lmv_fid_alloc(const struct lu_env *env, 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; - u32 mds = 0; - int rc; - - LASSERT(op_data); - LASSERT(fid); - - 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 = { NULL }; - struct lmv_desc *desc; - int rc; - - 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 = 32U; - lmv->tgts = kcalloc(lmv->tgts_size, sizeof(*lmv->tgts), GFP_NOFS); - if (!lmv->tgts) - return -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_def_easize = 0; - lmv->max_easize = 0; - - spin_lock_init(&lmv->lmv_lock); - mutex_init(&lmv->lmv_init_mutex); - - lprocfs_lmv_init_vars(&lvars); - - lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars); - rc = ldebugfs_seq_create(obd->obd_debugfs_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); - 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; - } - - return 0; - -out: - return rc; -} - -static int lmv_cleanup(struct obd_device *obd) -{ - struct lmv_obd *lmv = &obd->u.lmv; - - fld_client_fini(&lmv->lmv_fld); - if (lmv->tgts) { - int i; - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - if (!lmv->tgts[i]) - continue; - lmv_del_target(lmv, i); - } - kfree(lmv->tgts); - lmv->tgts_size = 0; - } - return 0; -} - -static int lmv_process_config(struct obd_device *obd, u32 len, void *buf) -{ - struct lustre_cfg *lcfg = buf; - struct obd_uuid obd_uuid; - int gen; - __u32 index; - int rc; - - 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)) { - rc = -EINVAL; - goto out; - } - - obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); - - if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1) { - rc = -EINVAL; - goto out; - } - if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1) { - rc = -EINVAL; - goto out; - } - rc = lmv_add_target(obd, &obd_uuid, index, gen); - goto out; - default: - CERROR("Unknown command: %d\n", lcfg->lcfg_command); - rc = -EINVAL; - goto out; - } -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; - u32 i; - - temp = kzalloc(sizeof(*temp), GFP_NOFS); - if (!temp) - return -ENOMEM; - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - if (!lmv->tgts[i] || !lmv->tgts[i]->ltd_exp) - 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; - } - - 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; - } 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; - } - } - -out_free_temp: - kfree(temp); - return rc; -} - -static int lmv_getstatus(struct obd_export *exp, - struct lu_fid *fid) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - - return md_getstatus(lmv->tgts[0]->ltd_exp, fid); -} - -static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid, - u64 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; - - tgt = lmv_find_target(lmv, fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - return md_getxattr(tgt->ltd_exp, fid, valid, name, input, - input_size, output_size, flags, request); -} - -static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid, - u64 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; - - tgt = lmv_find_target(lmv, fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - return md_setxattr(tgt->ltd_exp, fid, valid, name, input, - input_size, output_size, flags, suppgid, - request); -} - -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; - - 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; - } - - return md_getattr(tgt->ltd_exp, op_data, request); -} - -static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - u32 i; - - 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] || !lmv->tgts[i]->ltd_exp) - continue; - md_null_inode(lmv->tgts[i]->ltd_exp, fid); - } - - return 0; -} - -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; - - 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)); - return md_close(tgt->ltd_exp, op_data, mod, request); -} - -/** - * Choosing the MDT by name or FID in @op_data. - * For non-striped directory, it will locate MDT by fid. - * For striped-directory, it will locate MDT by name. And also - * it will reset op_fid1 with the FID of the chosen stripe. - **/ -static struct lmv_tgt_desc * -lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm, - const char *name, int namelen, struct lu_fid *fid, - u32 *mds) -{ - const struct lmv_oinfo *oinfo; - struct lmv_tgt_desc *tgt; - - if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) { - if (cfs_fail_val >= lsm->lsm_md_stripe_count) - return ERR_PTR(-EBADF); - oinfo = &lsm->lsm_md_oinfo[cfs_fail_val]; - } else { - oinfo = lsm_name_to_stripe_info(lsm, name, namelen); - if (IS_ERR(oinfo)) - return ERR_CAST(oinfo); - } - - if (fid) - *fid = oinfo->lmo_fid; - if (mds) - *mds = oinfo->lmo_mds; - - tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL); - - CDEBUG(D_INFO, "locate on mds %u " DFID "\n", oinfo->lmo_mds, - PFID(&oinfo->lmo_fid)); - return tgt; -} - -/** - * Locate mds by fid or name - * - * For striped directory (lsm != NULL), it will locate the stripe - * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type - * is unknown, it will return -EBADFD, and lmv_intent_lookup might need - * walk through all of stripes to locate the entry. - * - * For normal direcotry, it will locate MDS by FID directly. - * \param[in] lmv LMV device - * \param[in] op_data client MD stack parameters, name, namelen - * mds_num etc. - * \param[in] fid object FID used to locate MDS. - * - * retval pointer to the lmv_tgt_desc if succeed. - * ERR_PTR(errno) if failed. - */ -struct lmv_tgt_desc* -lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data, - struct lu_fid *fid) -{ - struct lmv_stripe_md *lsm = op_data->op_mea1; - struct lmv_tgt_desc *tgt; - - /* - * During creating VOLATILE file, it should honor the mdt - * index if the file under striped dir is being restored, see - * ct_restore(). - */ - if (op_data->op_bias & MDS_CREATE_VOLATILE && - (int)op_data->op_mds != -1) { - int i; - - tgt = lmv_get_target(lmv, op_data->op_mds, NULL); - if (IS_ERR(tgt)) - return tgt; - - if (lsm) { - /* refill the right parent fid */ - for (i = 0; i < lsm->lsm_md_stripe_count; i++) { - struct lmv_oinfo *oinfo; - - oinfo = &lsm->lsm_md_oinfo[i]; - if (oinfo->lmo_mds == op_data->op_mds) { - *fid = oinfo->lmo_fid; - break; - } - } - - if (i == lsm->lsm_md_stripe_count) - *fid = lsm->lsm_md_oinfo[0].lmo_fid; - } - - return tgt; - } - - if (!lsm || !op_data->op_namelen) { - tgt = lmv_find_target(lmv, fid); - if (IS_ERR(tgt)) - return tgt; - - op_data->op_mds = tgt->ltd_idx; - - return tgt; - } - - return lmv_locate_target_for_name(lmv, lsm, op_data->op_name, - op_data->op_namelen, fid, - &op_data->op_mds); -} - -static int lmv_create(struct obd_export *exp, struct md_op_data *op_data, - const void *data, size_t datalen, umode_t mode, - uid_t uid, gid_t 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; - - 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); - - CDEBUG(D_INODE, "CREATE name '%.*s' on " DFID " -> mds #%x\n", - (int)op_data->op_namelen, op_data->op_name, - PFID(&op_data->op_fid1), op_data->op_mds); - - rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data); - if (rc) - return rc; - - if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) { - /* - * Send the create request to the MDT where the object - * will be located - */ - tgt = lmv_find_target(lmv, &op_data->op_fid2); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - op_data->op_mds = tgt->ltd_idx; - } else { - CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n"); - } - - CDEBUG(D_INODE, "CREATE obj " DFID " -> mds #%x\n", - 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) - return rc; - CDEBUG(D_INODE, "Created - " DFID "\n", PFID(&op_data->op_fid2)); - } - return rc; -} - -static int -lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo, - const union ldlm_policy_data *policy, - struct lookup_intent *it, struct md_op_data *op_data, - struct lustre_handle *lockh, __u64 extra_lock_flags) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgt; - - 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 #%u\n", - LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx); - - return md_enqueue(tgt->ltd_exp, einfo, policy, it, op_data, lockh, - extra_lock_flags); -} - -static int -lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data, - struct ptlrpc_request **preq) -{ - 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; - - 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 #%u\n", - (int)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, preq); - if (rc != 0) - return rc; - - body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY); - if (body->mbo_valid & OBD_MD_MDS) { - struct lu_fid rid = body->mbo_fid1; - - CDEBUG(D_INODE, "Request attrs for " DFID "\n", - PFID(&rid)); - - tgt = lmv_find_target(lmv, &rid); - if (IS_ERR(tgt)) { - ptlrpc_req_finished(*preq); - *preq = NULL; - 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(*preq); - *preq = 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 lmv_tgt_desc *tgt, - struct md_op_data *op_data, int op_tgt, - enum ldlm_mode 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; - union ldlm_policy_data policy = { { 0 } }; - int rc = 0; - - if (!fid_is_sane(fid)) - return 0; - - if (!tgt) { - 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; - - LASSERT(op_data->op_namelen != 0); - - CDEBUG(D_INODE, "LINK " DFID ":%*s to " DFID "\n", - PFID(&op_data->op_fid2), (int)op_data->op_namelen, - op_data->op_name, PFID(&op_data->op_fid1)); - - op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); - op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); - op_data->op_cap = cfs_curproc_cap_pack(); - if (op_data->op_mea2) { - struct lmv_stripe_md *lsm = op_data->op_mea2; - const struct lmv_oinfo *oinfo; - - oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name, - op_data->op_namelen); - if (IS_ERR(oinfo)) - return PTR_ERR(oinfo); - - op_data->op_fid2 = oinfo->lmo_fid; - } - - 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, NULL, op_data, tgt->ltd_idx, LCK_EX, - MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1); - if (rc != 0) - return rc; - - return md_link(tgt->ltd_exp, op_data, request); -} - -static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data, - const char *old, size_t oldlen, - const char *new, size_t newlen, - struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct obd_export *target_exp; - struct lmv_tgt_desc *src_tgt; - struct lmv_tgt_desc *tgt_tgt; - struct mdt_body *body; - int rc; - - LASSERT(oldlen != 0); - - CDEBUG(D_INODE, "RENAME %.*s in " DFID ":%d to %.*s in " DFID ":%d\n", - (int)oldlen, old, PFID(&op_data->op_fid1), - op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0, - (int)newlen, new, PFID(&op_data->op_fid2), - op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0); - - op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); - op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); - op_data->op_cap = cfs_curproc_cap_pack(); - - if (op_data->op_cli_flags & CLI_MIGRATE) { - LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID " DFID "\n", - PFID(&op_data->op_fid3)); - - if (op_data->op_mea1) { - struct lmv_stripe_md *lsm = op_data->op_mea1; - struct lmv_tgt_desc *tmp; - - /* Fix the parent fid for striped dir */ - tmp = lmv_locate_target_for_name(lmv, lsm, old, - oldlen, - &op_data->op_fid1, - NULL); - if (IS_ERR(tmp)) - return PTR_ERR(tmp); - } - - rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data); - if (rc) - return rc; - src_tgt = lmv_find_target(lmv, &op_data->op_fid3); - if (IS_ERR(src_tgt)) - return PTR_ERR(src_tgt); - - target_exp = src_tgt->ltd_exp; - } else { - if (op_data->op_mea1) { - struct lmv_stripe_md *lsm = op_data->op_mea1; - - src_tgt = lmv_locate_target_for_name(lmv, lsm, old, - oldlen, - &op_data->op_fid1, - &op_data->op_mds); - } else { - src_tgt = lmv_find_target(lmv, &op_data->op_fid1); - } - if (IS_ERR(src_tgt)) - return PTR_ERR(src_tgt); - - if (op_data->op_mea2) { - struct lmv_stripe_md *lsm = op_data->op_mea2; - - tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new, - newlen, - &op_data->op_fid2, - &op_data->op_mds); - } else { - tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2); - } - if (IS_ERR(tgt_tgt)) - return PTR_ERR(tgt_tgt); - - target_exp = tgt_tgt->ltd_exp; - } - - /* - * 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, NULL, op_data, src_tgt->ltd_idx, - LCK_EX, MDS_INODELOCK_UPDATE, - MF_MDC_CANCEL_FID2); - if (rc) - return rc; - /* - * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt. - */ - if (fid_is_sane(&op_data->op_fid3)) { - struct lmv_tgt_desc *tgt; - - tgt = lmv_find_target(lmv, &op_data->op_fid1); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - /* Cancel LOOKUP lock on its parent */ - rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx, - LCK_EX, MDS_INODELOCK_LOOKUP, - MF_MDC_CANCEL_FID3); - if (rc) - return rc; - - rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx, - LCK_EX, MDS_INODELOCK_FULL, - MF_MDC_CANCEL_FID3); - if (rc) - return rc; - } - -retry_rename: - /* - * Cancel all the locks on tgt child (fid4). - */ - if (fid_is_sane(&op_data->op_fid4)) { - struct lmv_tgt_desc *tgt; - - rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx, - LCK_EX, MDS_INODELOCK_FULL, - MF_MDC_CANCEL_FID4); - if (rc) - return rc; - - tgt = lmv_find_target(lmv, &op_data->op_fid4); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - /* - * Since the target child might be destroyed, and it might - * become orphan, and we can only check orphan on the local - * MDT right now, so we send rename request to the MDT where - * target child is located. If target child does not exist, - * then it will send the request to the target parent - */ - target_exp = tgt->ltd_exp; - } - - rc = md_rename(target_exp, op_data, old, oldlen, new, newlen, request); - if (rc && rc != -EREMOTE) - return rc; - - body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY); - if (!body) - return -EPROTO; - - /* Not cross-ref case, just get out of here. */ - if (likely(!(body->mbo_valid & OBD_MD_MDS))) - return rc; - - CDEBUG(D_INODE, "%s: try rename to another MDT for " DFID "\n", - exp->exp_obd->obd_name, PFID(&body->mbo_fid1)); - - op_data->op_fid4 = body->mbo_fid1; - ptlrpc_req_finished(*request); - *request = NULL; - goto retry_rename; -} - -static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data, - void *ea, size_t ealen, struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgt; - - 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); - - return md_setattr(tgt->ltd_exp, op_data, ea, ealen, request); -} - -static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid, - struct ptlrpc_request **request) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgt; - - tgt = lmv_find_target(lmv, fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - return md_sync(tgt->ltd_exp, fid, request); -} - -/** - * Get current minimum entry from striped directory - * - * This function will search the dir entry, whose hash value is the - * closest(>=) to @hash_offset, from all of sub-stripes, and it is - * only being called for striped directory. - * - * \param[in] exp export of LMV - * \param[in] op_data parameters transferred beween client MD stack - * stripe_information will be included in this - * parameter - * \param[in] cb_op ldlm callback being used in enqueue in - * mdc_read_page - * \param[in] hash_offset the hash value, which is used to locate - * minum(closet) dir entry - * \param[in|out] stripe_offset the caller use this to indicate the stripe - * index of last entry, so to avoid hash conflict - * between stripes. It will also be used to - * return the stripe index of current dir entry. - * \param[in|out] entp the minum entry and it also is being used - * to input the last dir entry to resolve the - * hash conflict - * - * \param[out] ppage the page which holds the minum entry - * - * \retval = 0 get the entry successfully - * negative errno (< 0) does not get the entry - */ -static int lmv_get_min_striped_entry(struct obd_export *exp, - struct md_op_data *op_data, - struct md_callback *cb_op, - __u64 hash_offset, int *stripe_offset, - struct lu_dirent **entp, - struct page **ppage) -{ - struct lmv_stripe_md *lsm = op_data->op_mea1; - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lu_dirent *min_ent = NULL; - struct page *min_page = NULL; - struct lmv_tgt_desc *tgt; - int stripe_count; - int min_idx = 0; - int rc = 0; - int i; - - stripe_count = lsm->lsm_md_stripe_count; - for (i = 0; i < stripe_count; i++) { - __u64 stripe_hash = hash_offset; - struct lu_dirent *ent = NULL; - struct page *page = NULL; - struct lu_dirpage *dp; - - tgt = lmv_get_target(lmv, lsm->lsm_md_oinfo[i].lmo_mds, NULL); - if (IS_ERR(tgt)) { - rc = PTR_ERR(tgt); - goto out; - } - - /* - * op_data will be shared by each stripe, so we need - * reset these value for each stripe - */ - op_data->op_fid1 = lsm->lsm_md_oinfo[i].lmo_fid; - op_data->op_fid2 = lsm->lsm_md_oinfo[i].lmo_fid; - op_data->op_data = lsm->lsm_md_oinfo[i].lmo_root; -next: - rc = md_read_page(tgt->ltd_exp, op_data, cb_op, stripe_hash, - &page); - if (rc) - goto out; - - dp = page_address(page); - for (ent = lu_dirent_start(dp); ent; - ent = lu_dirent_next(ent)) { - /* Skip dummy entry */ - if (!le16_to_cpu(ent->lde_namelen)) - continue; - - if (le64_to_cpu(ent->lde_hash) < hash_offset) - continue; - - if (le64_to_cpu(ent->lde_hash) == hash_offset && - (*entp == ent || i < *stripe_offset)) - continue; - - /* skip . and .. for other stripes */ - if (i && (!strncmp(ent->lde_name, ".", - le16_to_cpu(ent->lde_namelen)) || - !strncmp(ent->lde_name, "..", - le16_to_cpu(ent->lde_namelen)))) - continue; - break; - } - - if (!ent) { - stripe_hash = le64_to_cpu(dp->ldp_hash_end); - - kunmap(page); - put_page(page); - page = NULL; - - /* - * reach the end of current stripe, go to next stripe - */ - if (stripe_hash == MDS_DIR_END_OFF) - continue; - else - goto next; - } - - if (min_ent) { - if (le64_to_cpu(min_ent->lde_hash) > - le64_to_cpu(ent->lde_hash)) { - min_ent = ent; - kunmap(min_page); - put_page(min_page); - min_idx = i; - min_page = page; - } else { - kunmap(page); - put_page(page); - page = NULL; - } - } else { - min_ent = ent; - min_page = page; - min_idx = i; - } - } - -out: - if (*ppage) { - kunmap(*ppage); - put_page(*ppage); - } - *stripe_offset = min_idx; - *entp = min_ent; - *ppage = min_page; - return rc; -} - -/** - * Build dir entry page from a striped directory - * - * This function gets one entry by @offset from a striped directory. It will - * read entries from all of stripes, and choose one closest to the required - * offset(&offset). A few notes - * 1. skip . and .. for non-zero stripes, because there can only have one . - * and .. in a directory. - * 2. op_data will be shared by all of stripes, instead of allocating new - * one, so need to restore before reusing. - * 3. release the entry page if that is not being chosen. - * - * \param[in] exp obd export refer to LMV - * \param[in] op_data hold those MD parameters of read_entry - * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry - * \param[out] ldp the entry being read - * \param[out] ppage the page holding the entry. Note: because the entry - * will be accessed in upper layer, so we need hold the - * page until the usages of entry is finished, see - * ll_dir_entry_next. - * - * retval =0 if get entry successfully - * <0 cannot get entry - */ -static int lmv_read_striped_page(struct obd_export *exp, - struct md_op_data *op_data, - struct md_callback *cb_op, - __u64 offset, struct page **ppage) -{ - struct inode *master_inode = op_data->op_data; - struct lu_fid master_fid = op_data->op_fid1; - __u64 hash_offset = offset; - __u32 ldp_flags; - struct page *min_ent_page = NULL; - struct page *ent_page = NULL; - struct lu_dirent *min_ent = NULL; - struct lu_dirent *last_ent; - struct lu_dirent *ent; - struct lu_dirpage *dp; - size_t left_bytes; - int ent_idx = 0; - void *area; - int rc; - - /* - * Allocate a page and read entries from all of stripes and fill - * the page by hash order - */ - ent_page = alloc_page(GFP_KERNEL); - if (!ent_page) - return -ENOMEM; - - /* Initialize the entry page */ - dp = kmap(ent_page); - memset(dp, 0, sizeof(*dp)); - dp->ldp_hash_start = cpu_to_le64(offset); - ldp_flags = LDF_COLLIDE; - - area = dp + 1; - left_bytes = PAGE_SIZE - sizeof(*dp); - ent = area; - last_ent = ent; - do { - __u16 ent_size; - - /* Find the minum entry from all sub-stripes */ - rc = lmv_get_min_striped_entry(exp, op_data, cb_op, hash_offset, - &ent_idx, &min_ent, - &min_ent_page); - if (rc) - goto out; - - /* - * If it can not get minum entry, it means it already reaches - * the end of this directory - */ - if (!min_ent) { - last_ent->lde_reclen = 0; - hash_offset = MDS_DIR_END_OFF; - goto out; - } - - ent_size = le16_to_cpu(min_ent->lde_reclen); - - /* - * the last entry lde_reclen is 0, but it might not - * the end of this entry of this temporay entry - */ - if (!ent_size) - ent_size = lu_dirent_calc_size( - le16_to_cpu(min_ent->lde_namelen), - le32_to_cpu(min_ent->lde_attrs)); - if (ent_size > left_bytes) { - last_ent->lde_reclen = cpu_to_le16(0); - hash_offset = le64_to_cpu(min_ent->lde_hash); - goto out; - } - - memcpy(ent, min_ent, ent_size); - - /* - * Replace . with master FID and Replace .. with the parent FID - * of master object - */ - if (!strncmp(ent->lde_name, ".", - le16_to_cpu(ent->lde_namelen)) && - le16_to_cpu(ent->lde_namelen) == 1) - fid_cpu_to_le(&ent->lde_fid, &master_fid); - else if (!strncmp(ent->lde_name, "..", - le16_to_cpu(ent->lde_namelen)) && - le16_to_cpu(ent->lde_namelen) == 2) - fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3); - - left_bytes -= ent_size; - ent->lde_reclen = cpu_to_le16(ent_size); - last_ent = ent; - ent = (void *)ent + ent_size; - hash_offset = le64_to_cpu(min_ent->lde_hash); - if (hash_offset == MDS_DIR_END_OFF) { - last_ent->lde_reclen = 0; - break; - } - } while (1); -out: - if (min_ent_page) { - kunmap(min_ent_page); - put_page(min_ent_page); - } - - if (unlikely(rc)) { - __free_page(ent_page); - ent_page = NULL; - } else { - if (ent == area) - ldp_flags |= LDF_EMPTY; - dp->ldp_flags |= cpu_to_le32(ldp_flags); - dp->ldp_hash_end = cpu_to_le64(hash_offset); - } - - /* - * We do not want to allocate md_op_data during each - * dir entry reading, so op_data will be shared by every stripe, - * then we need to restore it back to original value before - * return to the upper layer - */ - op_data->op_fid1 = master_fid; - op_data->op_fid2 = master_fid; - op_data->op_data = master_inode; - - *ppage = ent_page; - - return rc; -} - -static int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data, - struct md_callback *cb_op, __u64 offset, - struct page **ppage) -{ - struct lmv_stripe_md *lsm = op_data->op_mea1; - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgt; - - if (unlikely(lsm)) - return lmv_read_striped_page(exp, op_data, cb_op, offset, ppage); - - tgt = lmv_find_target(lmv, &op_data->op_fid1); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - return md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage); -} - -/** - * Unlink a file/directory - * - * Unlink a file or directory under the parent dir. The unlink request - * usually will be sent to the MDT where the child is located, but if - * the client does not have the child FID then request will be sent to the - * MDT where the parent is located. - * - * If the parent is a striped directory then it also needs to locate which - * stripe the name of the child is located, and replace the parent FID - * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown, - * it will walk through all of sub-stripes until the child is being - * unlinked finally. - * - * \param[in] exp export refer to LMV - * \param[in] op_data different parameters transferred beween client - * MD stacks, name, namelen, FIDs etc. - * op_fid1 is the parent FID, op_fid2 is the child - * FID. - * \param[out] request point to the request of unlink. - * - * retval 0 if succeed - * negative errno if failed. - */ -static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data, - struct ptlrpc_request **request) -{ - struct lmv_stripe_md *lsm = op_data->op_mea1; - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *parent_tgt = NULL; - struct lmv_tgt_desc *tgt = NULL; - struct mdt_body *body; - int stripe_index = 0; - int rc; - -retry_unlink: - /* For striped dir, we need to locate the parent as well */ - if (lsm) { - struct lmv_tgt_desc *tmp; - - LASSERT(op_data->op_name && op_data->op_namelen); - - tmp = lmv_locate_target_for_name(lmv, lsm, - op_data->op_name, - op_data->op_namelen, - &op_data->op_fid1, - &op_data->op_mds); - - /* - * return -EBADFD means unknown hash type, might - * need try all sub-stripe here - */ - if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD) - return PTR_ERR(tmp); - - /* - * Note: both migrating dir and unknown hash dir need to - * try all of sub-stripes, so we need start search the - * name from stripe 0, but migrating dir is already handled - * inside lmv_locate_target_for_name(), so we only check - * unknown hash type directory here - */ - if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) { - struct lmv_oinfo *oinfo; - - oinfo = &lsm->lsm_md_oinfo[stripe_index]; - - op_data->op_fid1 = oinfo->lmo_fid; - op_data->op_mds = oinfo->lmo_mds; - } - } - -try_next_stripe: - /* Send unlink requests to the MDT where the child is located */ - if (likely(!fid_is_zero(&op_data->op_fid2))) - tgt = lmv_find_target(lmv, &op_data->op_fid2); - else if (lsm) - tgt = lmv_get_target(lmv, op_data->op_mds, NULL); - else - tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); - - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); - op_data->op_fsgid = from_kgid(&init_user_ns, current_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). - */ - parent_tgt = lmv_find_target(lmv, &op_data->op_fid1); - if (IS_ERR(parent_tgt)) - return PTR_ERR(parent_tgt); - - if (parent_tgt != tgt) { - rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx, - LCK_EX, MDS_INODELOCK_LOOKUP, - MF_MDC_CANCEL_FID3); - } - - rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX, - MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3); - if (rc != 0) - return rc; - - CDEBUG(D_INODE, "unlink with fid=" DFID "/" DFID " -> mds #%u\n", - PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx); - - rc = md_unlink(tgt->ltd_exp, op_data, request); - if (rc != 0 && rc != -EREMOTE && rc != -ENOENT) - return rc; - - /* Try next stripe if it is needed. */ - if (rc == -ENOENT && lsm && lmv_need_try_all_stripes(lsm)) { - struct lmv_oinfo *oinfo; - - stripe_index++; - if (stripe_index >= lsm->lsm_md_stripe_count) - return rc; - - oinfo = &lsm->lsm_md_oinfo[stripe_index]; - - op_data->op_fid1 = oinfo->lmo_fid; - op_data->op_mds = oinfo->lmo_mds; - - ptlrpc_req_finished(*request); - *request = NULL; - - goto try_next_stripe; - } - - body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY); - if (!body) - return -EPROTO; - - /* Not cross-ref case, just get out of here. */ - if (likely(!(body->mbo_valid & OBD_MD_MDS))) - return rc; - - CDEBUG(D_INODE, "%s: try unlink to another MDT for " DFID "\n", - exp->exp_obd->obd_name, PFID(&body->mbo_fid1)); - - /* This is a remote object, try remote MDT, Note: it may - * try more than 1 time here, Considering following case - * /mnt/lustre is root on MDT0, remote1 is on MDT1 - * 1. Initially A does not know where remote1 is, it send - * unlink RPC to MDT0, MDT0 return -EREMOTE, it will - * resend unlink RPC to MDT1 (retry 1st time). - * - * 2. During the unlink RPC in flight, - * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2 - * and create new remote1, but on MDT0 - * - * 3. MDT1 get unlink RPC(from A), then do remote lock on - * /mnt/lustre, then lookup get fid of remote1, and find - * it is remote dir again, and replay -EREMOTE again. - * - * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times). - * - * In theory, it might try unlimited time here, but it should - * be very rare case. - */ - op_data->op_fid2 = body->mbo_fid1; - ptlrpc_req_finished(*request); - *request = NULL; - - goto retry_unlink; -} - -static int lmv_precleanup(struct obd_device *obd) -{ - fld_client_debugfs_fini(&obd->u.lmv.lmv_fld); - lprocfs_obd_cleanup(obd); - return 0; -} - -/** - * Get by key a value associated with a LMV device. - * - * Dispatch request to lower-layer devices as needed. - * - * \param[in] env execution environment for this thread - * \param[in] exp export for the LMV device - * \param[in] keylen length of key identifier - * \param[in] key identifier of key to get value for - * \param[in] vallen size of \a val - * \param[out] val pointer to storage location for value - * - * \retval 0 on success - * \retval negative negated errno on failure - */ -static int lmv_get_info(const struct lu_env *env, struct obd_export *exp, - __u32 keylen, void *key, __u32 *vallen, void *val) -{ - struct obd_device *obd; - struct lmv_obd *lmv; - int rc = 0; - - obd = class_exp2obd(exp); - if (!obd) { - CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n", - exp->exp_handle.h_cookie); - return -EINVAL; - } - - lmv = &obd->u.lmv; - if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) { - int i; - - LASSERT(*vallen == sizeof(__u32)); - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - struct lmv_tgt_desc *tgt = lmv->tgts[i]; - - /* - * All tgts should be connected when this gets called. - */ - if (!tgt || !tgt->ltd_exp) - continue; - - if (!obd_get_info(env, tgt->ltd_exp, keylen, key, - vallen, val)) - return 0; - } - return -EINVAL; - } else if (KEY_IS(KEY_MAX_EASIZE) || - KEY_IS(KEY_DEFAULT_EASIZE) || - KEY_IS(KEY_CONN_DATA)) { - /* - * 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); - if (!rc && KEY_IS(KEY_CONN_DATA)) - exp->exp_connect_data = *(struct obd_connect_data *)val; - 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; -} - -/** - * Asynchronously set by key a value associated with a LMV device. - * - * Dispatch request to lower-layer devices as needed. - * - * \param[in] env execution environment for this thread - * \param[in] exp export for the LMV device - * \param[in] keylen length of key identifier - * \param[in] key identifier of key to store value for - * \param[in] vallen size of value to store - * \param[in] val pointer to data to be stored - * \param[in] set optional list of related ptlrpc requests - * - * \retval 0 on success - * \retval negative negated errno on failure - */ -static int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp, - u32 keylen, void *key, u32 vallen, - void *val, struct ptlrpc_request_set *set) -{ - struct lmv_tgt_desc *tgt; - struct obd_device *obd; - struct lmv_obd *lmv; - int rc = 0; - - obd = class_exp2obd(exp); - if (!obd) { - CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n", - exp->exp_handle.h_cookie); - return -EINVAL; - } - lmv = &obd->u.lmv; - - if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) || - KEY_IS(KEY_DEFAULT_EASIZE)) { - int i, err = 0; - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - tgt = lmv->tgts[i]; - - if (!tgt || !tgt->ltd_exp) - 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; -} - -static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm, - const struct lmv_mds_md_v1 *lmm1) -{ - struct lmv_obd *lmv = &exp->exp_obd->u.lmv; - int stripe_count; - int rc = 0; - int cplen; - int i; - - lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic); - lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count); - lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index); - if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE)) - lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN; - else - lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type); - lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version); - cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name, - sizeof(lsm->lsm_md_pool_name)); - - if (cplen >= sizeof(lsm->lsm_md_pool_name)) - return -E2BIG; - - CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d layout_version %d\n", - lsm->lsm_md_stripe_count, lsm->lsm_md_master_mdt_index, - lsm->lsm_md_hash_type, lsm->lsm_md_layout_version); - - stripe_count = le32_to_cpu(lmm1->lmv_stripe_count); - for (i = 0; i < stripe_count; i++) { - fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid, - &lmm1->lmv_stripe_fids[i]); - rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid, - &lsm->lsm_md_oinfo[i].lmo_mds); - if (rc) - return rc; - CDEBUG(D_INFO, "unpack fid #%d " DFID "\n", i, - PFID(&lsm->lsm_md_oinfo[i].lmo_fid)); - } - - return rc; -} - -static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp, - const union lmv_mds_md *lmm, size_t lmm_size) -{ - struct lmv_stripe_md *lsm; - bool allocated = false; - int lsm_size, rc; - - LASSERT(lsmp); - - lsm = *lsmp; - /* Free memmd */ - if (lsm && !lmm) { - int i; - - for (i = 0; i < lsm->lsm_md_stripe_count; i++) { - /* - * For migrating inode, the master stripe and master - * object will be the same, so do not need iput, see - * ll_update_lsm_md - */ - if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && - !i) && lsm->lsm_md_oinfo[i].lmo_root) - iput(lsm->lsm_md_oinfo[i].lmo_root); - } - - kvfree(lsm); - *lsmp = NULL; - return 0; - } - - if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE) - return -EPERM; - - /* Unpack memmd */ - if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 && - le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) { - CERROR("%s: invalid lmv magic %x: rc = %d\n", - exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic), - -EIO); - return -EIO; - } - - if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1) - lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm)); - else - /** - * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md, - * stripecount should be 0 then. - */ - lsm_size = lmv_stripe_md_size(0); - - if (!lsm) { - lsm = kvzalloc(lsm_size, GFP_NOFS); - if (!lsm) - return -ENOMEM; - allocated = true; - *lsmp = lsm; - } - - switch (le32_to_cpu(lmm->lmv_magic)) { - case LMV_MAGIC_V1: - rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1); - break; - default: - CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name, - le32_to_cpu(lmm->lmv_magic)); - rc = -EINVAL; - break; - } - - if (rc && allocated) { - kvfree(lsm); - *lsmp = NULL; - lsm_size = rc; - } - return lsm_size; -} - -void lmv_free_memmd(struct lmv_stripe_md *lsm) -{ - lmv_unpackmd(NULL, &lsm, NULL, 0); -} -EXPORT_SYMBOL(lmv_free_memmd); - -static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid, - union ldlm_policy_data *policy, - enum ldlm_mode mode, enum ldlm_cancel_flags flags, - void *opaque) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - int rc = 0; - int err; - u32 i; - - LASSERT(fid); - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - struct lmv_tgt_desc *tgt = lmv->tgts[i]; - - if (!tgt || !tgt->ltd_exp || !tgt->ltd_active) - continue; - - err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags, - opaque); - if (!rc) - rc = err; - } - return rc; -} - -static int lmv_set_lock_data(struct obd_export *exp, - const struct lustre_handle *lockh, - void *data, __u64 *bits) -{ - struct lmv_obd *lmv = &exp->exp_obd->u.lmv; - struct lmv_tgt_desc *tgt = lmv->tgts[0]; - - if (!tgt || !tgt->ltd_exp) - return -EINVAL; - - return md_set_lock_data(tgt->ltd_exp, lockh, data, bits); -} - -static enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags, - const struct lu_fid *fid, - enum ldlm_type type, - union ldlm_policy_data *policy, - enum ldlm_mode mode, - struct lustre_handle *lockh) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - enum ldlm_mode rc; - int tgt; - u32 i; - - CDEBUG(D_INODE, "Lock match 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. Try the MDT that the FID maps to first, - * since this can be easily found, and only try others if that fails. - */ - for (i = 0, tgt = lmv_find_target_index(lmv, fid); - i < lmv->desc.ld_tgt_count; - i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) { - if (tgt < 0) { - CDEBUG(D_HA, "%s: " DFID " is inaccessible: rc = %d\n", - obd->obd_name, PFID(fid), tgt); - tgt = 0; - } - - if (!lmv->tgts[tgt] || !lmv->tgts[tgt]->ltd_exp || - !lmv->tgts[tgt]->ltd_active) - continue; - - rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid, - type, policy, mode, lockh); - if (rc) - return rc; - } - - return 0; -} - -static 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; - struct lmv_tgt_desc *tgt = lmv->tgts[0]; - - if (!tgt || !tgt->ltd_exp) - return -EINVAL; - return md_get_lustre_md(tgt->ltd_exp, req, dt_exp, md_exp, md); -} - -static 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; - struct lmv_tgt_desc *tgt = lmv->tgts[0]; - - if (md->lmv) { - lmv_free_memmd(md->lmv); - md->lmv = NULL; - } - if (!tgt || !tgt->ltd_exp) - return -EINVAL; - return md_free_lustre_md(tgt->ltd_exp, md); -} - -static int lmv_set_open_replay_data(struct obd_export *exp, - struct obd_client_handle *och, - struct lookup_intent *it) -{ - struct obd_device *obd = exp->exp_obd; - struct lmv_obd *lmv = &obd->u.lmv; - struct lmv_tgt_desc *tgt; - - 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, it); -} - -static 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; - - 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_intent_getattr_async(struct obd_export *exp, - struct md_enqueue_info *minfo) -{ - 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 *ptgt = NULL; - struct lmv_tgt_desc *ctgt = NULL; - - if (!fid_is_sane(&op_data->op_fid2)) - return -EINVAL; - - ptgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1); - if (IS_ERR(ptgt)) - return PTR_ERR(ptgt); - - ctgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2); - if (IS_ERR(ctgt)) - return PTR_ERR(ctgt); - - /* - * if child is on remote MDT, we need 2 async RPCs to fetch both LOOKUP - * lock on parent, and UPDATE lock on child MDT, which makes all - * complicated. Considering remote dir is rare case, and not supporting - * it in statahead won't cause any issue, drop its support for now. - */ - if (ptgt != ctgt) - return -ENOTSUPP; - - return md_intent_getattr_async(ptgt->ltd_exp, minfo); -} - -static 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; - - tgt = lmv_find_target(lmv, fid); - if (IS_ERR(tgt)) - return PTR_ERR(tgt); - - return md_revalidate_lock(tgt->ltd_exp, it, fid, bits); -} - -static int -lmv_get_fid_from_lsm(struct obd_export *exp, - const struct lmv_stripe_md *lsm, - const char *name, int namelen, struct lu_fid *fid) -{ - const struct lmv_oinfo *oinfo; - - LASSERT(lsm); - oinfo = lsm_name_to_stripe_info(lsm, name, namelen); - if (IS_ERR(oinfo)) - return PTR_ERR(oinfo); - - *fid = oinfo->lmo_fid; - - return 0; -} - -/** - * 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. - */ -static 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; - __u64 curspace = 0, curinodes = 0; - u32 i; - - if (!tgt || !tgt->ltd_exp || !tgt->ltd_active || - !lmv->desc.ld_tgt_count) { - CERROR("master lmv inactive\n"); - return -EIO; - } - - if (oqctl->qc_cmd != Q_GETOQUOTA) - return obd_quotactl(tgt->ltd_exp, oqctl); - - for (i = 0; i < lmv->desc.ld_tgt_count; i++) { - int err; - - tgt = lmv->tgts[i]; - - if (!tgt || !tgt->ltd_exp || !tgt->ltd_active) - 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; -} - -static int lmv_merge_attr(struct obd_export *exp, - const struct lmv_stripe_md *lsm, - struct cl_attr *attr, - ldlm_blocking_callback cb_blocking) -{ - int rc, i; - - rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0); - if (rc < 0) - return rc; - - for (i = 0; i < lsm->lsm_md_stripe_count; i++) { - struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root; - - CDEBUG(D_INFO, "" DFID " size %llu, blocks %llu nlink %u, atime %lu ctime %lu, mtime %lu.\n", - PFID(&lsm->lsm_md_oinfo[i].lmo_fid), - i_size_read(inode), (unsigned long long)inode->i_blocks, - inode->i_nlink, LTIME_S(inode->i_atime), - LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime)); - - /* for slave stripe, it needs to subtract nlink for . and .. */ - if (i) - attr->cat_nlink += inode->i_nlink - 2; - else - attr->cat_nlink = inode->i_nlink; - - attr->cat_size += i_size_read(inode); - attr->cat_blocks += inode->i_blocks; - - if (attr->cat_atime < LTIME_S(inode->i_atime)) - attr->cat_atime = LTIME_S(inode->i_atime); - - if (attr->cat_ctime < LTIME_S(inode->i_ctime)) - attr->cat_ctime = LTIME_S(inode->i_ctime); - - if (attr->cat_mtime < LTIME_S(inode->i_mtime)) - attr->cat_mtime = LTIME_S(inode->i_mtime); - } - return 0; -} - -static struct obd_ops lmv_obd_ops = { - .owner = THIS_MODULE, - .setup = lmv_setup, - .cleanup = lmv_cleanup, - .precleanup = lmv_precleanup, - .process_config = lmv_process_config, - .connect = lmv_connect, - .disconnect = lmv_disconnect, - .statfs = lmv_statfs, - .get_info = lmv_get_info, - .set_info_async = lmv_set_info_async, - .notify = lmv_notify, - .get_uuid = lmv_get_uuid, - .iocontrol = lmv_iocontrol, - .quotactl = lmv_quotactl -}; - -static struct md_ops lmv_md_ops = { - .getstatus = lmv_getstatus, - .null_inode = lmv_null_inode, - .close = lmv_close, - .create = lmv_create, - .enqueue = lmv_enqueue, - .getattr = lmv_getattr, - .getxattr = lmv_getxattr, - .getattr_name = lmv_getattr_name, - .intent_lock = lmv_intent_lock, - .link = lmv_link, - .rename = lmv_rename, - .setattr = lmv_setattr, - .setxattr = lmv_setxattr, - .sync = lmv_sync, - .read_page = lmv_read_page, - .unlink = lmv_unlink, - .init_ea_size = lmv_init_ea_size, - .cancel_unused = lmv_cancel_unused, - .set_lock_data = lmv_set_lock_data, - .lock_match = lmv_lock_match, - .get_lustre_md = lmv_get_lustre_md, - .free_lustre_md = lmv_free_lustre_md, - .merge_attr = lmv_merge_attr, - .set_open_replay_data = lmv_set_open_replay_data, - .clear_open_replay_data = lmv_clear_open_replay_data, - .intent_getattr_async = lmv_intent_getattr_async, - .revalidate_lock = lmv_revalidate_lock, - .get_fid_from_lsm = lmv_get_fid_from_lsm, - .unpackmd = lmv_unpackmd, -}; - -static int __init lmv_init(void) -{ - struct lprocfs_static_vars lvars; - - lprocfs_lmv_init_vars(&lvars); - - return class_register_type(&lmv_obd_ops, &lmv_md_ops, - LUSTRE_LMV_NAME, NULL); -} - -static void lmv_exit(void) -{ - class_unregister_type(LUSTRE_LMV_NAME); -} - -MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); -MODULE_DESCRIPTION("Lustre Logical Metadata Volume"); -MODULE_VERSION(LUSTRE_VERSION_STRING); -MODULE_LICENSE("GPL"); - -module_init(lmv_init); -module_exit(lmv_exit); |