--- /dev/null
+/*
+ * 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) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/ofd/ofd_fs.c
+ *
+ * Author: Alexey Zhuravlev <bzzz@whamcloud.com>
+ * Author: Mikhail Pershin <tappro@whamcloud.com>
+ */
+
+#define DEBUG_SUBSYSTEM S_FILTER
+
+#include "ofd_internal.h"
+
+int ofd_record_write(const struct lu_env *env, struct ofd_device *ofd,
+ struct dt_object *dt, struct lu_buf *buf, loff_t *off)
+{
+ struct thandle *th;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(dt);
+
+ th = dt_trans_create(env, ofd->ofd_osd);
+ if (IS_ERR(th))
+ RETURN(PTR_ERR(th));
+
+ rc = dt_declare_record_write(env, dt, buf->lb_len, *off, th);
+ if (rc == 0) {
+ rc = dt_trans_start_local(env, ofd->ofd_osd, th);
+ if (rc == 0)
+ rc = dt_record_write(env, dt, buf, off, th);
+ }
+ dt_trans_stop(env, ofd->ofd_osd, th);
+
+ RETURN(rc);
+}
+
+obd_id ofd_last_id(struct ofd_device *ofd, obd_seq group)
+{
+ obd_id id;
+
+ LASSERT(group <= ofd->ofd_max_group);
+
+ cfs_spin_lock(&ofd->ofd_objid_lock);
+ id = ofd->ofd_last_objids[group];
+ cfs_spin_unlock(&ofd->ofd_objid_lock);
+
+ return id;
+}
+
+void ofd_last_id_set(struct ofd_device *ofd, obd_id id, obd_seq group)
+{
+ LASSERT(group <= ofd->ofd_max_group);
+ cfs_spin_lock(&ofd->ofd_objid_lock);
+ if (ofd->ofd_last_objids[group] < id)
+ ofd->ofd_last_objids[group] = id;
+ cfs_spin_unlock(&ofd->ofd_objid_lock);
+}
+
+int ofd_last_id_write(const struct lu_env *env, struct ofd_device *ofd,
+ obd_seq group)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ obd_id tmp;
+ int rc;
+
+ ENTRY;
+
+ info->fti_buf.lb_buf = &tmp;
+ info->fti_buf.lb_len = sizeof(tmp);
+ info->fti_off = 0;
+
+ CDEBUG(D_INODE, "%s: write last_objid for group "LPU64": "LPU64"\n",
+ ofd_obd(ofd)->obd_name, group, ofd_last_id(ofd, group));
+
+ tmp = cpu_to_le64(ofd_last_id(ofd, group));
+
+ rc = ofd_record_write(env, ofd, ofd->ofd_lastid_obj[group],
+ &info->fti_buf, &info->fti_off);
+ RETURN(rc);
+}
+
+int ofd_last_group_write(const struct lu_env *env, struct ofd_device *ofd)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ obd_seq tmp;
+ int rc;
+
+ ENTRY;
+
+ info->fti_buf.lb_buf = &tmp;
+ info->fti_buf.lb_len = sizeof(tmp);
+ info->fti_off = 0;
+
+ tmp = cpu_to_le32(ofd->ofd_max_group);
+
+ rc = ofd_record_write(env, ofd, ofd->ofd_last_group_file,
+ &info->fti_buf, &info->fti_off);
+
+ RETURN(rc);
+}
+
+void ofd_group_fini(const struct lu_env *env, struct ofd_device *ofd,
+ int group)
+{
+ LASSERT(ofd->ofd_lastid_obj[group]);
+ lu_object_put(env, &ofd->ofd_lastid_obj[group]->do_lu);
+ ofd->ofd_lastid_obj[group] = NULL;
+}
+
+int ofd_group_load(const struct lu_env *env, struct ofd_device *ofd, int group)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ struct dt_object *dob;
+ obd_id lastid;
+ int rc;
+
+ ENTRY;
+
+ /* if group is already initialized */
+ if (ofd->ofd_lastid_obj[group])
+ RETURN(0);
+
+ lu_local_obj_fid(&info->fti_fid, OFD_GROUP0_LAST_OID + group);
+ memset(&info->fti_attr, 0, sizeof(info->fti_attr));
+ info->fti_attr.la_valid = LA_MODE;
+ info->fti_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
+ info->fti_dof.dof_type = dt_mode_to_dft(S_IFREG);
+
+ /* create object tracking per-group last created
+ * id to be used by orphan recovery mechanism */
+ dob = dt_find_or_create(env, ofd->ofd_osd, &info->fti_fid,
+ &info->fti_dof, &info->fti_attr);
+ if (IS_ERR(dob))
+ RETURN(PTR_ERR(dob));
+
+ ofd->ofd_lastid_obj[group] = dob;
+ cfs_mutex_init(&ofd->ofd_create_locks[group]);
+
+ rc = dt_attr_get(env, dob, &info->fti_attr, BYPASS_CAPA);
+ if (rc)
+ GOTO(cleanup, rc);
+
+ if (info->fti_attr.la_size == 0) {
+ /* object is just created, initialize last id */
+ ofd->ofd_last_objids[group] = OFD_INIT_OBJID;
+ ofd_last_id_set(ofd, OFD_INIT_OBJID, group);
+ ofd_last_id_write(env, ofd, group);
+ ofd_last_group_write(env, ofd);
+ } else if (info->fti_attr.la_size == sizeof(lastid)) {
+ info->fti_off = 0;
+ info->fti_buf.lb_buf = &lastid;
+ info->fti_buf.lb_len = sizeof(lastid);
+
+ rc = dt_record_read(env, dob, &info->fti_buf, &info->fti_off);
+ if (rc) {
+ CERROR("can't read last_id: %d\n", rc);
+ GOTO(cleanup, rc);
+ }
+ ofd->ofd_last_objids[group] = le64_to_cpu(lastid);
+ } else {
+ CERROR("corrupted size %Lu LAST_ID of group %u\n",
+ (unsigned long long)info->fti_attr.la_size, group);
+ rc = -EINVAL;
+ }
+
+ RETURN(0);
+cleanup:
+ ofd_group_fini(env, ofd, group);
+ RETURN(rc);
+}
+
+/* ofd groups managements */
+int ofd_groups_init(const struct lu_env *env, struct ofd_device *ofd)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ unsigned long groups_size;
+ obd_seq last_group;
+ int rc = 0;
+ int i;
+
+ ENTRY;
+
+ cfs_spin_lock_init(&ofd->ofd_objid_lock);
+
+ rc = dt_attr_get(env, ofd->ofd_last_group_file,
+ &info->fti_attr, BYPASS_CAPA);
+ if (rc)
+ GOTO(cleanup, rc);
+
+ groups_size = (unsigned long)info->fti_attr.la_size;
+
+ if (groups_size == sizeof(last_group)) {
+ info->fti_off = 0;
+ info->fti_buf.lb_buf = &last_group;
+ info->fti_buf.lb_len = sizeof(last_group);
+
+ rc = dt_record_read(env, ofd->ofd_last_group_file,
+ &info->fti_buf, &info->fti_off);
+ if (rc) {
+ CERROR("can't read LAST_GROUP: %d\n", rc);
+ GOTO(cleanup, rc);
+ }
+
+ ofd->ofd_max_group = le32_to_cpu(last_group);
+ LASSERT(ofd->ofd_max_group <= OFD_MAX_GROUPS);
+ } else if (groups_size == 0) {
+ ofd->ofd_max_group = 0;
+ } else {
+ CERROR("groups file is corrupted? size = %lu\n", groups_size);
+ GOTO(cleanup, rc = -EIO);
+ }
+
+ for (i = 0; i <= ofd->ofd_max_group; i++) {
+ rc = ofd_group_load(env, ofd, i);
+ if (rc) {
+ CERROR("can't load group %d: %d\n", i, rc);
+ /* Clean all previously set groups */
+ while (i > 0)
+ ofd_group_fini(env, ofd, --i);
+ GOTO(cleanup, rc);
+ }
+ }
+
+ CWARN("%s: %u groups initialized\n",
+ ofd_obd(ofd)->obd_name, ofd->ofd_max_group + 1);
+cleanup:
+ RETURN(rc);
+}
+
+int ofd_clients_data_init(const struct lu_env *env, struct ofd_device *ofd,
+ unsigned long fsize)
+{
+ struct obd_device *obd = ofd_obd(ofd);
+ struct lr_server_data *lsd = &ofd->ofd_lut.lut_lsd;
+ struct lsd_client_data *lcd = NULL;
+ struct filter_export_data *fed;
+ int cl_idx;
+ int rc = 0;
+ loff_t off = lsd->lsd_client_start;
+
+ CLASSERT(offsetof(struct lsd_client_data, lcd_padding) +
+ sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
+
+ OBD_ALLOC_PTR(lcd);
+ if (lcd == NULL)
+ RETURN(-ENOMEM);
+
+ for (cl_idx = 0; off < fsize; cl_idx++) {
+ struct obd_export *exp;
+ __u64 last_rcvd;
+
+ /* Don't assume off is incremented properly by
+ * fsfilt_read_record(), in case sizeof(*lcd)
+ * isn't the same as fsd->lsd_client_size. */
+ off = lsd->lsd_client_start + cl_idx * lsd->lsd_client_size;
+ rc = lut_client_data_read(env, &ofd->ofd_lut, lcd, &off, cl_idx);
+ if (rc) {
+ CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
+ LAST_RCVD, cl_idx, off, rc);
+ rc = 0;
+ break; /* read error shouldn't cause startup to fail */
+ }
+
+ if (lcd->lcd_uuid[0] == '\0') {
+ CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
+ cl_idx);
+ continue;
+ }
+
+ last_rcvd = lcd->lcd_last_transno;
+
+ /* These exports are cleaned up by ofd_disconnect(), so they
+ * need to be set up like real exports as ofd_connect() does.
+ */
+ exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
+
+ CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
+ " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
+ last_rcvd, lsd->lsd_last_transno);
+
+ if (IS_ERR(exp)) {
+ if (PTR_ERR(exp) == -EALREADY) {
+ /* export already exists, zero out this one */
+ CERROR("Duplicate export %s!\n", lcd->lcd_uuid);
+ continue;
+ }
+ GOTO(err_out, rc = PTR_ERR(exp));
+ }
+
+ fed = &exp->exp_filter_data;
+ *fed->fed_ted.ted_lcd = *lcd;
+
+ ofd_export_stats_init(ofd, exp, NULL);
+ rc = lut_client_add(env, exp, cl_idx);
+ LASSERTF(rc == 0, "rc = %d\n", rc); /* can't fail existing */
+ /* VBR: set export last committed version */
+ exp->exp_last_committed = last_rcvd;
+ cfs_spin_lock(&exp->exp_lock);
+ exp->exp_connecting = 0;
+ exp->exp_in_recovery = 0;
+ cfs_spin_unlock(&exp->exp_lock);
+ obd->obd_max_recoverable_clients++;
+ class_export_put(exp);
+
+ /* Need to check last_rcvd even for duplicated exports. */
+ CDEBUG(D_OTHER, "client at idx %d has last_rcvd = "LPU64"\n",
+ cl_idx, last_rcvd);
+
+ cfs_spin_lock(&ofd->ofd_lut.lut_translock);
+ if (last_rcvd > lsd->lsd_last_transno)
+ lsd->lsd_last_transno = last_rcvd;
+ cfs_spin_unlock(&ofd->ofd_lut.lut_translock);
+ }
+
+err_out:
+ OBD_FREE_PTR(lcd);
+ RETURN(rc);
+}
+
+int ofd_server_data_init(const struct lu_env *env, struct ofd_device *ofd)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ struct lr_server_data *lsd = &ofd->ofd_lut.lut_lsd;
+ struct obd_device *obd = ofd_obd(ofd);
+ unsigned long last_rcvd_size;
+ int rc;
+
+ rc = dt_attr_get(env, ofd->ofd_lut.lut_last_rcvd, &info->fti_attr,
+ BYPASS_CAPA);
+ if (rc)
+ RETURN(rc);
+
+ last_rcvd_size = (unsigned long)info->fti_attr.la_size;
+
+ /* ensure padding in the struct is the correct size */
+ CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
+ sizeof(lsd->lsd_padding) == LR_SERVER_SIZE);
+
+ if (last_rcvd_size == 0) {
+ LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
+
+ memcpy(lsd->lsd_uuid, obd->obd_uuid.uuid,
+ sizeof(lsd->lsd_uuid));
+ lsd->lsd_last_transno = 0;
+ lsd->lsd_mount_count = 0;
+ lsd->lsd_server_size = LR_SERVER_SIZE;
+ lsd->lsd_client_start = LR_CLIENT_START;
+ lsd->lsd_client_size = LR_CLIENT_SIZE;
+ lsd->lsd_subdir_count = FILTER_SUBDIR_COUNT;
+ lsd->lsd_feature_incompat = OBD_INCOMPAT_OST;
+ } else {
+ rc = lut_server_data_read(env, &ofd->ofd_lut);
+ if (rc) {
+ CDEBUG(D_INODE,"OBD ofd: error reading %s: rc %d\n",
+ LAST_RCVD, rc);
+ GOTO(err_fsd, rc);
+ }
+ if (strcmp((char *)lsd->lsd_uuid,
+ (char *)obd->obd_uuid.uuid)) {
+ LCONSOLE_ERROR("Trying to start OBD %s using the wrong"
+ " disk %s. Were the /dev/ assignments "
+ "rearranged?\n",
+ obd->obd_uuid.uuid, lsd->lsd_uuid);
+ GOTO(err_fsd, rc = -EINVAL);
+ }
+ }
+
+ lsd->lsd_mount_count++;
+ obd->u.obt.obt_mount_count = lsd->lsd_mount_count;
+ obd->u.obt.obt_instance = (__u32)obd->u.obt.obt_mount_count;
+ ofd->ofd_subdir_count = lsd->lsd_subdir_count;
+
+ if (lsd->lsd_feature_incompat & ~OFD_INCOMPAT_SUPP) {
+ CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
+ obd->obd_name,
+ lsd->lsd_feature_incompat & ~OFD_INCOMPAT_SUPP);
+ GOTO(err_fsd, rc = -EINVAL);
+ }
+ if (lsd->lsd_feature_rocompat & ~OFD_ROCOMPAT_SUPP) {
+ CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
+ obd->obd_name,
+ lsd->lsd_feature_rocompat & ~OFD_ROCOMPAT_SUPP);
+ /* Do something like remount filesystem read-only */
+ GOTO(err_fsd, rc = -EINVAL);
+ }
+
+ CDEBUG(D_INODE, "%s: server last_transno : "LPU64"\n",
+ obd->obd_name, lsd->lsd_last_transno);
+ CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
+ obd->obd_name, lsd->lsd_mount_count);
+ CDEBUG(D_INODE, "%s: server data size: %u\n",
+ obd->obd_name, lsd->lsd_server_size);
+ CDEBUG(D_INODE, "%s: per-client data start: %u\n",
+ obd->obd_name, lsd->lsd_client_start);
+ CDEBUG(D_INODE, "%s: per-client data size: %u\n",
+ obd->obd_name, lsd->lsd_client_size);
+ CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
+ obd->obd_name, lsd->lsd_subdir_count);
+ CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
+ last_rcvd_size <= lsd->lsd_client_start ? 0 :
+ (last_rcvd_size - lsd->lsd_client_start) /
+ lsd->lsd_client_size);
+
+ if (!obd->obd_replayable)
+ CWARN("%s: recovery support OFF\n", obd->obd_name);
+
+ rc = ofd_clients_data_init(env, ofd, last_rcvd_size);
+
+ cfs_spin_lock(&ofd->ofd_lut.lut_translock);
+ obd->obd_last_committed = lsd->lsd_last_transno;
+ cfs_spin_unlock(&ofd->ofd_lut.lut_translock);
+
+ /* save it, so mount count and last_transno is current */
+ rc = lut_server_data_update(env, &ofd->ofd_lut, 0);
+ if (rc)
+ GOTO(err_fsd, rc);
+
+ RETURN(0);
+
+err_fsd:
+ class_disconnect_exports(obd);
+ RETURN(rc);
+}
+
+int ofd_fs_setup(const struct lu_env *env, struct ofd_device *ofd,
+ struct obd_device *obd)
+{
+ struct ofd_thread_info *info = ofd_info(env);
+ struct dt_object *fo;
+ int rc = 0;
+
+ ENTRY;
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FS_SETUP))
+ RETURN (-ENOENT);
+
+ rc = ofd_server_data_init(env, ofd);
+ if (rc)
+ GOTO(out, rc);
+
+ lu_local_obj_fid(&info->fti_fid, OFD_HEALTH_CHECK_OID);
+ memset(&info->fti_attr, 0, sizeof(info->fti_attr));
+ info->fti_attr.la_valid = LA_MODE;
+ info->fti_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
+ info->fti_dof.dof_type = dt_mode_to_dft(S_IFREG);
+
+ fo = dt_find_or_create(env, ofd->ofd_osd, &info->fti_fid,
+ &info->fti_dof, &info->fti_attr);
+ if (IS_ERR(fo))
+ GOTO(out, rc = PTR_ERR(fo));
+
+ ofd->ofd_health_check_file = fo;
+
+ lu_local_obj_fid(&info->fti_fid, OFD_LAST_GROUP_OID);
+ memset(&info->fti_attr, 0, sizeof(info->fti_attr));
+ info->fti_attr.la_valid = LA_MODE;
+ info->fti_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR;
+ info->fti_dof.dof_type = dt_mode_to_dft(S_IFREG);
+
+ fo = dt_find_or_create(env, ofd->ofd_osd, &info->fti_fid,
+ &info->fti_dof, &info->fti_attr);
+ if (IS_ERR(fo))
+ GOTO(out_hc, rc = PTR_ERR(fo));
+
+ ofd->ofd_last_group_file = fo;
+
+ rc = ofd_groups_init(env, ofd);
+ if (rc)
+ GOTO(out_lg, rc);
+
+ RETURN(0);
+out_lg:
+ lu_object_put(env, &ofd->ofd_last_group_file->do_lu);
+out_hc:
+ lu_object_put(env, &ofd->ofd_health_check_file->do_lu);
+out:
+ return rc;
+}
+
+void ofd_fs_cleanup(const struct lu_env *env, struct ofd_device *ofd)
+{
+ int i;
+
+ ENTRY;
+
+ ofd_info_init(env, NULL);
+
+ for (i = 0; i <= ofd->ofd_max_group; i++) {
+ if (ofd->ofd_lastid_obj[i]) {
+ ofd_last_id_write(env, ofd, i);
+ ofd_group_fini(env, ofd, i);
+ }
+ }
+
+ i = dt_sync(env, ofd->ofd_osd);
+ if (i)
+ CERROR("can't sync: %d\n", i);
+
+ if (ofd->ofd_last_group_file) {
+ lu_object_put(env, &ofd->ofd_last_group_file->do_lu);
+ ofd->ofd_last_group_file = NULL;
+ }
+
+ if (ofd->ofd_health_check_file) {
+ lu_object_put(env, &ofd->ofd_health_check_file->do_lu);
+ ofd->ofd_health_check_file = NULL;
+ }
+
+ EXIT;
+}
+
git://git.whamcloud.com / fs / lustre-release.git / commitdiff