-/* -*- MODE: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * mdd/mdd_handler.c
- * Lustre Metadata Server (mdd) routines
+ * 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.
*
- * Copyright (C) 2006 Cluster File Systems, Inc.
- * Author: Wang Di <wangdi@clusterfs.com>
+ * 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).
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * 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
*
- * You may have signed or agreed to another license before downloading
- * this software. If so, you are bound by the terms and conditions
- * of that agreement, and the following does not apply to you. See the
- * LICENSE file included with this distribution for more information.
+ * 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.
*
- * If you did not agree to a different license, then this copy of Lustre
- * is open source software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * In either case, Lustre is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * license text for more details.
+ * Copyright (c) 2011, 2012, Intel Corporation.
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/mdd/mdd_device.c
+ *
+ * Lustre Metadata Server (mdd) routines
+ *
+ * Author: Wang Di <wangdi@clusterfs.com>
+ */
+
#define DEBUG_SUBSYSTEM S_MDS
#include <linux/module.h>
-#include <linux/jbd.h>
-#include <obd.h>
#include <obd_class.h>
-#include <lustre_ver.h>
-#include <obd_support.h>
-#include <lprocfs_status.h>
-
-#include <linux/ldiskfs_fs.h>
#include <lustre_mds.h>
-#include <lustre/lustre_idl.h>
+#include <obd_support.h>
+#include <lu_object.h>
+#include <lustre_param.h>
+#include <lustre_fid.h>
#include "mdd_internal.h"
-struct md_device_operations mdd_ops;
+const struct md_device_operations mdd_ops;
+static struct lu_device_type mdd_device_type;
+
+static const char mdd_root_dir_name[] = "ROOT";
+static const char mdd_obf_dir_name[] = "fid";
+
+/* Slab for MDD object allocation */
+cfs_mem_cache_t *mdd_object_kmem;
-static const char *mdd_root_dir_name = "root";
-static int mdd_device_init(const struct lu_env *env, struct lu_device *d,
- const char *name, struct lu_device *next)
+static struct lu_kmem_descr mdd_caches[] = {
+ {
+ .ckd_cache = &mdd_object_kmem,
+ .ckd_name = "mdd_obj",
+ .ckd_size = sizeof(struct mdd_object)
+ },
+ {
+ .ckd_cache = NULL
+ }
+};
+
+static int mdd_connect_to_next(const struct lu_env *env, struct mdd_device *m,
+ const char *nextdev)
{
- struct mdd_device *mdd = lu2mdd_dev(d);
- int rc;
- ENTRY;
+ struct obd_connect_data *data = NULL;
+ struct lu_device *lud = mdd2lu_dev(m);
+ struct obd_device *obd;
+ int rc;
+ ENTRY;
+
+ LASSERT(m->mdd_child_exp == NULL);
+
+ OBD_ALLOC(data, sizeof(*data));
+ if (data == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ obd = class_name2obd(nextdev);
+ if (obd == NULL) {
+ CERROR("can't locate next device: %s\n", nextdev);
+ GOTO(out, rc = -ENOTCONN);
+ }
+
+ data->ocd_connect_flags = OBD_CONNECT_VERSION;
+ data->ocd_version = LUSTRE_VERSION_CODE;
+
+ rc = obd_connect(NULL, &m->mdd_child_exp, obd, &obd->obd_uuid, data, NULL);
+ if (rc) {
+ CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
+ GOTO(out, rc);
+ }
+
+ lud->ld_site = m->mdd_child_exp->exp_obd->obd_lu_dev->ld_site;
+ LASSERT(lud->ld_site);
+ m->mdd_child = lu2dt_dev(m->mdd_child_exp->exp_obd->obd_lu_dev);
+ m->mdd_bottom = lu2dt_dev(lud->ld_site->ls_bottom_dev);
+ lu_dev_add_linkage(lud->ld_site, lud);
- mdd->mdd_child = lu2dt_dev(next);
+out:
+ if (data)
+ OBD_FREE(data, sizeof(*data));
+ RETURN(rc);
+}
- /* Prepare transactions callbacks. */
- mdd->mdd_txn_cb.dtc_txn_start = mdd_txn_start_cb;
- mdd->mdd_txn_cb.dtc_txn_stop = mdd_txn_stop_cb;
- mdd->mdd_txn_cb.dtc_txn_commit = mdd_txn_commit_cb;
- mdd->mdd_txn_cb.dtc_cookie = mdd;
- CFS_INIT_LIST_HEAD(&mdd->mdd_txn_cb.dtc_linkage);
- mdd->mdd_atime_diff = MAX_ATIME_DIFF;
+static int mdd_init0(const struct lu_env *env, struct mdd_device *mdd,
+ struct lu_device_type *t, struct lustre_cfg *lcfg)
+{
+ int rc;
+ ENTRY;
+
+ mdd->mdd_md_dev.md_lu_dev.ld_ops = &mdd_lu_ops;
+ mdd->mdd_md_dev.md_ops = &mdd_ops;
+
+ rc = mdd_connect_to_next(env, mdd, lustre_cfg_string(lcfg, 3));
+ if (rc)
+ RETURN(rc);
+
+ mdd->mdd_atime_diff = MAX_ATIME_DIFF;
+ /* sync permission changes */
+ mdd->mdd_sync_permission = 1;
+
+ dt_conf_get(env, mdd->mdd_child, &mdd->mdd_dt_conf);
+
+ /* we are using service name but not mdd obd name
+ * for compatibility reasons.
+ * It is passed from MDT in lustre_cfg[2] buffer */
+ rc = mdd_procfs_init(mdd, lustre_cfg_string(lcfg, 2));
+ if (rc < 0)
+ obd_disconnect(mdd->mdd_child_exp);
- rc = mdd_procfs_init(mdd, name);
RETURN(rc);
}
static struct lu_device *mdd_device_fini(const struct lu_env *env,
struct lu_device *d)
{
- struct mdd_device *mdd = lu2mdd_dev(d);
- struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
+ struct mdd_device *mdd = lu2mdd_dev(d);
int rc;
+ if (d->ld_site)
+ lu_dev_del_linkage(d->ld_site, d);
+
rc = mdd_procfs_fini(mdd);
if (rc) {
CERROR("proc fini error %d \n", rc);
return ERR_PTR(rc);
}
- return next;
+ return NULL;
}
-static int mdd_mount(const struct lu_env *env, struct mdd_device *mdd)
-{
- int rc;
- struct dt_object *root;
- ENTRY;
-
- dt_txn_callback_add(mdd->mdd_child, &mdd->mdd_txn_cb);
- root = dt_store_open(env, mdd->mdd_child, mdd_root_dir_name,
- &mdd->mdd_root_fid);
- if (!IS_ERR(root)) {
- LASSERT(root != NULL);
- lu_object_put(env, &root->do_lu);
- rc = orph_index_init(env, mdd);
- } else
- rc = PTR_ERR(root);
-
- RETURN(rc);
-}
+static void mdd_changelog_fini(const struct lu_env *env,
+ struct mdd_device *mdd);
static void mdd_device_shutdown(const struct lu_env *env,
struct mdd_device *m, struct lustre_cfg *cfg)
{
ENTRY;
- dt_txn_callback_del(m->mdd_child, &m->mdd_txn_cb);
- if (m->mdd_obd_dev)
- mdd_fini_obd(env, m, cfg);
+ mdd_changelog_fini(env, m);
+ if (m->mdd_dot_lustre_objs.mdd_obf)
+ mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf);
+ if (m->mdd_dot_lustre)
+ mdd_object_put(env, m->mdd_dot_lustre);
orph_index_fini(env, m);
+ if (m->mdd_capa != NULL) {
+ lu_object_put(env, &m->mdd_capa->do_lu);
+ m->mdd_capa = NULL;
+ }
+ lu_site_purge(env, m->mdd_md_dev.md_lu_dev.ld_site, -1);
/* remove upcall device*/
md_upcall_fini(&m->mdd_md_dev);
+
+ if (m->mdd_child_exp)
+ obd_disconnect(m->mdd_child_exp);
+
EXIT;
}
+static int changelog_init_cb(const struct lu_env *env, struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct mdd_device *mdd = (struct mdd_device *)data;
+ struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cr_hdr.lrh_type == CHANGELOG_REC);
+
+ CDEBUG(D_INFO,
+ "seeing record at index %d/%d/"LPU64" t=%x %.*s in log "LPX64"\n",
+ hdr->lrh_index, rec->cr_hdr.lrh_index, rec->cr.cr_index,
+ rec->cr.cr_type, rec->cr.cr_namelen, rec->cr.cr_name,
+ llh->lgh_id.lgl_oid);
+
+ mdd->mdd_cl.mc_index = rec->cr.cr_index;
+ return LLOG_PROC_BREAK;
+}
+
+static int changelog_user_init_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct mdd_device *mdd = (struct mdd_device *)data;
+ struct llog_changelog_user_rec *rec =
+ (struct llog_changelog_user_rec *)hdr;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC);
+
+ CDEBUG(D_INFO, "seeing user at index %d/%d id=%d endrec="LPU64
+ " in log "LPX64"\n", hdr->lrh_index, rec->cur_hdr.lrh_index,
+ rec->cur_id, rec->cur_endrec, llh->lgh_id.lgl_oid);
+
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = rec->cur_id;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ return LLOG_PROC_BREAK;
+}
+
+static int llog_changelog_cancel_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
+ struct llog_cookie cookie;
+ long long endrec = *(long long *)data;
+ int rc;
+
+ ENTRY;
+
+ /* This is always a (sub)log, not the catalog */
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ if (rec->cr.cr_index > endrec)
+ /* records are in order, so we're done */
+ RETURN(LLOG_PROC_BREAK);
+
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_index = hdr->lrh_index;
+
+ /* cancel them one at a time. I suppose we could store up the cookies
+ * and cancel them all at once; probably more efficient, but this is
+ * done as a user call, so who cares... */
+ rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle, 1,
+ &cookie);
+ RETURN(rc < 0 ? rc : 0);
+}
+
+static int llog_changelog_cancel(const struct lu_env *env,
+ struct llog_ctxt *ctxt,
+ struct lov_stripe_md *lsm, int count,
+ struct llog_cookie *cookies, int flags)
+{
+ struct llog_handle *cathandle = ctxt->loc_handle;
+ int rc;
+
+ ENTRY;
+
+ /* This should only be called with the catalog handle */
+ LASSERT(cathandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
+
+ rc = llog_cat_process(env, cathandle, llog_changelog_cancel_cb,
+ (void *)cookies, 0, 0);
+ if (rc >= 0)
+ /* 0 or 1 means we're done */
+ rc = 0;
+ else
+ CERROR("%s: cancel idx %u of catalog "LPX64" rc=%d\n",
+ ctxt->loc_obd->obd_name, cathandle->lgh_last_idx,
+ cathandle->lgh_id.lgl_oid, rc);
+
+ RETURN(rc);
+}
+
+static struct llog_operations changelog_orig_logops;
+
+int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on);
+
+static int mdd_changelog_llog_init(const struct lu_env *env,
+ struct mdd_device *mdd)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_ctxt *ctxt = NULL, *uctxt = NULL;
+ struct lu_fid rfid;
+ int rc;
+
+ OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
+ obd->obd_lvfs_ctxt.dt = mdd->mdd_bottom;
+ rc = dt_root_get(env, mdd->mdd_bottom, &rfid);
+ if (rc)
+ RETURN(-ENODEV);
+
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CHANGELOG_ORIG_CTXT,
+ obd, &changelog_orig_logops);
+ if (rc) {
+ CERROR("%s: changelog llog setup failed: rc = %d\n",
+ obd->obd_name, rc);
+ RETURN(rc);
+ }
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_open_create(env, ctxt, &ctxt->loc_handle, NULL,
+ CHANGELOG_CATALOG);
+ if (rc)
+ GOTO(out_cleanup, rc);
+
+ rc = llog_cat_init_and_process(env, ctxt->loc_handle);
+ if (rc)
+ GOTO(out_close, rc);
+
+ rc = llog_cat_reverse_process(env, ctxt->loc_handle,
+ changelog_init_cb, mdd);
+
+ if (rc < 0) {
+ CERROR("%s: changelog init failed: rc = %d\n", obd->obd_name,
+ rc);
+ GOTO(out_close, rc);
+ }
+
+ CDEBUG(D_IOCTL, "changelog starting index="LPU64"\n",
+ mdd->mdd_cl.mc_index);
+
+ /* setup user changelog */
+ rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CHANGELOG_USER_ORIG_CTXT,
+ obd, &changelog_orig_logops);
+ if (rc) {
+ CERROR("%s: changelog users llog setup failed: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_close, rc);
+ }
+
+ uctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_open_create(env, uctxt, &uctxt->loc_handle, NULL,
+ CHANGELOG_USERS);
+ if (rc)
+ GOTO(out_ucleanup, rc);
+
+ uctxt->loc_handle->lgh_logops->lop_add = llog_cat_add_rec;
+ uctxt->loc_handle->lgh_logops->lop_declare_add = llog_cat_declare_add_rec;
+
+ rc = llog_cat_init_and_process(env, uctxt->loc_handle);
+ if (rc)
+ GOTO(out_uclose, rc);
+
+ rc = llog_cat_reverse_process(env, uctxt->loc_handle,
+ changelog_user_init_cb, mdd);
+ if (rc < 0) {
+ CERROR("%s: changelog user init failed: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_uclose, rc);
+ }
+
+ /* If we have registered users, assume we want changelogs on */
+ if (mdd->mdd_cl.mc_lastuser > 0) {
+ rc = mdd_changelog_on(env, mdd, 1);
+ if (rc < 0)
+ GOTO(out_uclose, rc);
+ }
+ llog_ctxt_put(ctxt);
+ llog_ctxt_put(uctxt);
+ RETURN(0);
+out_uclose:
+ llog_cat_close(env, uctxt->loc_handle);
+out_ucleanup:
+ llog_cleanup(env, uctxt);
+out_close:
+ llog_cat_close(env, ctxt->loc_handle);
+out_cleanup:
+ llog_cleanup(env, ctxt);
+ return rc;
+}
+
+static int mdd_changelog_init(const struct lu_env *env, struct mdd_device *mdd)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ int rc;
+
+ mdd->mdd_cl.mc_index = 0;
+ spin_lock_init(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ mdd->mdd_cl.mc_flags = 0; /* off by default */
+ mdd->mdd_cl.mc_mask = CHANGELOG_DEFMASK;
+ spin_lock_init(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = 0;
+
+ rc = mdd_changelog_llog_init(env, mdd);
+ if (rc) {
+ CERROR("%s: changelog setup during init failed: rc = %d\n",
+ obd->obd_name, rc);
+ mdd->mdd_cl.mc_flags |= CLM_ERR;
+ }
+
+ return rc;
+}
+
+static void mdd_changelog_fini(const struct lu_env *env,
+ struct mdd_device *mdd)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_ctxt *ctxt;
+
+ mdd->mdd_cl.mc_flags = 0;
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ if (ctxt) {
+ llog_cat_close(env, ctxt->loc_handle);
+ llog_cleanup(env, ctxt);
+ }
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt) {
+ llog_cat_close(env, ctxt->loc_handle);
+ llog_cleanup(env, ctxt);
+ }
+}
+
+int mdd_changelog_write_header(const struct lu_env *env,
+ struct mdd_device *mdd, int markerflags);
+
+/* Start / stop recording */
+int mdd_changelog_on(const struct lu_env *env, struct mdd_device *mdd, int on)
+{
+ int rc = 0;
+
+ if ((on == 1) && ((mdd->mdd_cl.mc_flags & CLM_ON) == 0)) {
+ LCONSOLE_INFO("%s: changelog on\n", mdd2obd_dev(mdd)->obd_name);
+ if (mdd->mdd_cl.mc_flags & CLM_ERR) {
+ CERROR("Changelogs cannot be enabled due to error "
+ "condition (see %s log).\n",
+ mdd2obd_dev(mdd)->obd_name);
+ rc = -ESRCH;
+ } else {
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags |= CLM_ON;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ rc = mdd_changelog_write_header(env, mdd, CLM_START);
+ }
+ } else if ((on == 0) && ((mdd->mdd_cl.mc_flags & CLM_ON) == CLM_ON)) {
+ LCONSOLE_INFO("%s: changelog off\n",mdd2obd_dev(mdd)->obd_name);
+ rc = mdd_changelog_write_header(env, mdd, CLM_FINI);
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags &= ~CLM_ON;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ }
+ return rc;
+}
+
+/** Remove entries with indicies up to and including \a endrec from the
+ * changelog
+ * \param mdd
+ * \param endrec
+ * \retval 0 ok
+ */
+int mdd_changelog_llog_cancel(const struct lu_env *env,
+ struct mdd_device *mdd, long long endrec)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_ctxt *ctxt;
+ long long unsigned cur;
+ int rc;
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ if (ctxt == NULL)
+ return -ENXIO;
+
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ cur = (long long)mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ if (endrec > cur)
+ endrec = cur;
+
+ /* purge to "0" is shorthand for everything */
+ if (endrec == 0)
+ endrec = cur;
+
+ /* If purging all records, write a header entry so we don't have an
+ empty catalog and we're sure to have a valid starting index next
+ time. In case of crash, we just restart with old log so we're
+ allright. */
+ if (endrec == cur) {
+ /* XXX: transaction is started by llog itself */
+ rc = mdd_changelog_write_header(env, mdd, CLM_PURGE);
+ if (rc)
+ goto out;
+ }
+
+ /* Some records were purged, so reset repeat-access time (so we
+ record new mtime update records, so users can see a file has been
+ changed since the last purge) */
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+
+ rc = llog_cancel(env, ctxt, NULL, 1, (struct llog_cookie *)&endrec, 0);
+out:
+ llog_ctxt_put(ctxt);
+ return rc;
+}
+
+/** Add a CL_MARK record to the changelog
+ * \param mdd
+ * \param markerflags - CLM_*
+ * \retval 0 ok
+ */
+int mdd_changelog_write_header(const struct lu_env *env,
+ struct mdd_device *mdd, int markerflags)
+{
+ struct obd_device *obd = mdd2obd_dev(mdd);
+ struct llog_changelog_rec *rec;
+ struct lu_buf *buf;
+ struct llog_ctxt *ctxt;
+ int reclen;
+ int len = strlen(obd->obd_name);
+ int rc;
+
+ ENTRY;
+
+ if (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) {
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ RETURN(0);
+ }
+
+ reclen = llog_data_len(sizeof(*rec) + len);
+ buf = mdd_buf_alloc(env, reclen);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ rec = buf->lb_buf;
+
+ rec->cr.cr_flags = CLF_VERSION;
+ rec->cr.cr_type = CL_MARK;
+ rec->cr.cr_namelen = len;
+ memcpy(rec->cr.cr_name, obd->obd_name, rec->cr.cr_namelen);
+ /* Status and action flags */
+ rec->cr.cr_markerflags = mdd->mdd_cl.mc_flags | markerflags;
+ rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr.cr_namelen);
+ rec->cr_hdr.lrh_type = CHANGELOG_REC;
+ rec->cr.cr_time = cl_time();
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
+ LASSERT(ctxt);
+
+ rc = llog_cat_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, NULL);
+ if (rc > 0)
+ rc = 0;
+ llog_ctxt_put(ctxt);
+
+ /* assume on or off event; reset repeat-access time */
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
+ RETURN(rc);
+}
+
+/**
+ * Create ".lustre" directory.
+ */
+static int create_dot_lustre_dir(const struct lu_env *env, struct mdd_device *m)
+{
+ struct lu_fid *fid = &mdd_env_info(env)->mti_fid;
+ struct md_object *mdo;
+ int rc;
+
+ memcpy(fid, &LU_DOT_LUSTRE_FID, sizeof(struct lu_fid));
+ mdo = llo_store_create_index(env, &m->mdd_md_dev, m->mdd_child,
+ mdd_root_dir_name, dot_lustre_name,
+ fid, &dt_directory_features);
+ /* .lustre dir may be already present */
+ if (IS_ERR(mdo) && PTR_ERR(mdo) != -EEXIST) {
+ rc = PTR_ERR(mdo);
+ CERROR("creating obj [%s] fid = "DFID" rc = %d\n",
+ dot_lustre_name, PFID(fid), rc);
+ return rc;
+ }
+
+ if (!IS_ERR(mdo))
+ lu_object_put(env, &mdo->mo_lu);
+
+ return 0;
+}
+
+
+static int dot_lustre_mdd_permission(const struct lu_env *env,
+ struct md_object *pobj,
+ struct md_object *cobj,
+ struct md_attr *attr, int mask)
+{
+ if (mask & ~(MAY_READ | MAY_EXEC))
+ return -EPERM;
+ else
+ return 0;
+}
+
+static int dot_lustre_mdd_xattr_get(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf,
+ const char *name)
+{
+ return 0;
+}
+
+static int dot_lustre_mdd_xattr_list(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf)
+{
+ return 0;
+}
+
+static int dot_lustre_mdd_xattr_set(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_buf *buf, const char *name,
+ int fl)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_xattr_del(const struct lu_env *env,
+ struct md_object *obj,
+ const char *name)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_swap_layouts(const struct lu_env *env,
+ struct md_object *obj1,
+ struct md_object *obj2,
+ __u64 flags)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_readlink(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf)
+{
+ return 0;
+}
+
+static int dot_lustre_mdd_object_create(const struct lu_env *env,
+ struct md_object *obj,
+ const struct md_op_spec *spec,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_ref_add(const struct lu_env *env,
+ struct md_object *obj,
+ const struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_ref_del(const struct lu_env *env,
+ struct md_object *obj,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_open(const struct lu_env *env, struct md_object *obj,
+ int flags)
+{
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ mdd_obj->mod_count++;
+ mdd_write_unlock(env, mdd_obj);
+
+ return 0;
+}
+
+static int dot_lustre_mdd_close(const struct lu_env *env, struct md_object *obj,
+ struct md_attr *ma, int mode)
+{
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ mdd_obj->mod_count--;
+ mdd_write_unlock(env, mdd_obj);
+
+ return 0;
+}
+
+static int dot_lustre_mdd_object_sync(const struct lu_env *env,
+ struct md_object *obj)
+{
+ return -ENOSYS;
+}
+
+static int dot_lustre_mdd_path(const struct lu_env *env, struct md_object *obj,
+ char *path, int pathlen, __u64 *recno, int *linkno)
+{
+ return -ENOSYS;
+}
+
+static int dot_file_lock(const struct lu_env *env, struct md_object *obj,
+ struct lov_mds_md *lmm, struct ldlm_extent *extent,
+ struct lustre_handle *lockh)
+{
+ return -ENOSYS;
+}
+
+static int dot_file_unlock(const struct lu_env *env, struct md_object *obj,
+ struct lov_mds_md *lmm, struct lustre_handle *lockh)
+{
+ return -ENOSYS;
+}
+
+static struct md_object_operations mdd_dot_lustre_obj_ops = {
+ .moo_permission = dot_lustre_mdd_permission,
+ .moo_attr_get = mdd_attr_get,
+ .moo_attr_set = mdd_attr_set,
+ .moo_xattr_get = dot_lustre_mdd_xattr_get,
+ .moo_xattr_list = dot_lustre_mdd_xattr_list,
+ .moo_xattr_set = dot_lustre_mdd_xattr_set,
+ .moo_xattr_del = dot_lustre_mdd_xattr_del,
+ .moo_swap_layouts = dot_lustre_mdd_swap_layouts,
+ .moo_readpage = mdd_readpage,
+ .moo_readlink = dot_lustre_mdd_readlink,
+ .moo_object_create = dot_lustre_mdd_object_create,
+ .moo_ref_add = dot_lustre_mdd_ref_add,
+ .moo_ref_del = dot_lustre_mdd_ref_del,
+ .moo_open = dot_lustre_mdd_open,
+ .moo_close = dot_lustre_mdd_close,
+ .moo_capa_get = mdd_capa_get,
+ .moo_object_sync = dot_lustre_mdd_object_sync,
+ .moo_path = dot_lustre_mdd_path,
+ .moo_file_lock = dot_file_lock,
+ .moo_file_unlock = dot_file_unlock,
+};
+
+
+static int dot_lustre_mdd_lookup(const struct lu_env *env, struct md_object *p,
+ const struct lu_name *lname, struct lu_fid *f,
+ struct md_op_spec *spec)
+{
+ if (strcmp(lname->ln_name, mdd_obf_dir_name) == 0)
+ *f = LU_OBF_FID;
+ else
+ return -ENOENT;
+
+ return 0;
+}
+
+static mdl_mode_t dot_lustre_mdd_lock_mode(const struct lu_env *env,
+ struct md_object *obj,
+ mdl_mode_t mode)
+{
+ return MDL_MINMODE;
+}
+
+static int dot_lustre_mdd_create(const struct lu_env *env,
+ struct md_object *pobj,
+ const struct lu_name *lname,
+ struct md_object *child,
+ struct md_op_spec *spec,
+ struct md_attr* ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_create_data(const struct lu_env *env,
+ struct md_object *p,
+ struct md_object *o,
+ const struct md_op_spec *spec,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_rename(const struct lu_env *env,
+ struct md_object *src_pobj,
+ struct md_object *tgt_pobj,
+ const struct lu_fid *lf,
+ const struct lu_name *lsname,
+ struct md_object *tobj,
+ const struct lu_name *ltname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_link(const struct lu_env *env,
+ struct md_object *tgt_obj,
+ struct md_object *src_obj,
+ const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_unlink(const struct lu_env *env,
+ struct md_object *pobj,
+ struct md_object *cobj,
+ const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_name_insert(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_name *lname,
+ const struct lu_fid *fid,
+ const struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_name_remove(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_name *lname,
+ const struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_rename_tgt(const struct lu_env *env,
+ struct md_object *pobj,
+ struct md_object *tobj,
+ const struct lu_fid *fid,
+ const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+
+static struct md_dir_operations mdd_dot_lustre_dir_ops = {
+ .mdo_is_subdir = mdd_is_subdir,
+ .mdo_lookup = dot_lustre_mdd_lookup,
+ .mdo_lock_mode = dot_lustre_mdd_lock_mode,
+ .mdo_create = dot_lustre_mdd_create,
+ .mdo_create_data = dot_lustre_mdd_create_data,
+ .mdo_rename = dot_lustre_mdd_rename,
+ .mdo_link = dot_lustre_mdd_link,
+ .mdo_unlink = dot_lustre_mdd_unlink,
+ .mdo_name_insert = dot_lustre_mdd_name_insert,
+ .mdo_name_remove = dot_lustre_mdd_name_remove,
+ .mdo_rename_tgt = dot_lustre_mdd_rename_tgt,
+};
+
+static int obf_attr_get(const struct lu_env *env, struct md_object *obj,
+ struct md_attr *ma)
+{
+ struct mdd_device *mdd = mdo2mdd(obj);
+
+ /* "fid" is a virtual object and hence does not have any "real"
+ * attributes. So we reuse attributes of .lustre for "fid" dir */
+ return mdd_attr_get(env, &mdd->mdd_dot_lustre->mod_obj, ma);
+}
+
+static int obf_attr_set(const struct lu_env *env, struct md_object *obj,
+ const struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int obf_xattr_list(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf)
+{
+ return 0;
+}
+
+static int obf_xattr_get(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf,
+ const char *name)
+{
+ struct mdd_device *mdd = mdo2mdd(obj);
+ struct mdd_object *root;
+ struct lu_fid rootfid;
+ int rc = 0;
+
+ /*
+ * .lustre returns default striping which is 'stored'
+ * in the root
+ */
+ if (strcmp(name, XATTR_NAME_LOV) == 0) {
+ rc = dt_root_get(env, mdd->mdd_child, &rootfid);
+ if (rc)
+ return rc;
+ root = mdd_object_find(env, mdd, &rootfid);
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+ rc = mdo_xattr_get(env, root, buf, name,
+ mdd_object_capa(env, md2mdd_obj(obj)));
+ mdd_object_put(env, root);
+ }
+
+ return rc;
+}
+
+static int obf_xattr_set(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_buf *buf, const char *name,
+ int fl)
+{
+ return -EPERM;
+}
+
+static int obf_xattr_del(const struct lu_env *env,
+ struct md_object *obj,
+ const char *name)
+{
+ return -EPERM;
+}
+
+static int obf_mdd_open(const struct lu_env *env, struct md_object *obj,
+ int flags)
+{
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ mdd_obj->mod_count++;
+ mdd_write_unlock(env, mdd_obj);
+
+ return 0;
+}
+
+static int obf_mdd_close(const struct lu_env *env, struct md_object *obj,
+ struct md_attr *ma, int mode)
+{
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ mdd_obj->mod_count--;
+ mdd_write_unlock(env, mdd_obj);
+
+ return 0;
+}
+
+/** Nothing to list in "fid" directory */
+static int obf_mdd_readpage(const struct lu_env *env, struct md_object *obj,
+ const struct lu_rdpg *rdpg)
+{
+ return -EPERM;
+}
+
+static int obf_path(const struct lu_env *env, struct md_object *obj,
+ char *path, int pathlen, __u64 *recno, int *linkno)
+{
+ return -ENOSYS;
+}
+
+static struct md_object_operations mdd_obf_obj_ops = {
+ .moo_attr_get = obf_attr_get,
+ .moo_attr_set = obf_attr_set,
+ .moo_xattr_list = obf_xattr_list,
+ .moo_xattr_get = obf_xattr_get,
+ .moo_xattr_set = obf_xattr_set,
+ .moo_xattr_del = obf_xattr_del,
+ .moo_open = obf_mdd_open,
+ .moo_close = obf_mdd_close,
+ .moo_readpage = obf_mdd_readpage,
+ .moo_path = obf_path
+};
+
+/**
+ * Lookup method for "fid" object. Only filenames with correct SEQ:OID format
+ * are valid. We also check if object with passed fid exists or not.
+ */
+static int obf_lookup(const struct lu_env *env, struct md_object *p,
+ const struct lu_name *lname, struct lu_fid *f,
+ struct md_op_spec *spec)
+{
+ char *name = (char *)lname->ln_name;
+ struct mdd_device *mdd = mdo2mdd(p);
+ struct mdd_object *child;
+ int rc = 0;
+
+ while (*name == '[')
+ name++;
+
+ sscanf(name, SFID, RFID(f));
+ if (!fid_is_sane(f)) {
+ CWARN("%s: bad FID format [%s], should be "DFID"\n",
+ mdd2obd_dev(mdd)->obd_name, lname->ln_name,
+ (__u64)FID_SEQ_NORMAL, 1, 0);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ if (!fid_is_norm(f)) {
+ CWARN("%s: "DFID" is invalid, sequence should be "
+ ">= "LPX64"\n", mdd2obd_dev(mdd)->obd_name, PFID(f),
+ (__u64)FID_SEQ_NORMAL);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ /* Check if object with this fid exists */
+ child = mdd_object_find(env, mdd, f);
+ if (child == NULL)
+ GOTO(out, rc = 0);
+ if (IS_ERR(child))
+ GOTO(out, rc = PTR_ERR(child));
+
+ if (mdd_object_exists(child) == 0)
+ rc = -ENOENT;
+
+ mdd_object_put(env, child);
+
+out:
+ return rc;
+}
+
+static int obf_create(const struct lu_env *env, struct md_object *pobj,
+ const struct lu_name *lname, struct md_object *child,
+ struct md_op_spec *spec, struct md_attr* ma)
+{
+ return -EPERM;
+}
+
+static int obf_rename(const struct lu_env *env,
+ struct md_object *src_pobj, struct md_object *tgt_pobj,
+ const struct lu_fid *lf, const struct lu_name *lsname,
+ struct md_object *tobj, const struct lu_name *ltname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int obf_link(const struct lu_env *env, struct md_object *tgt_obj,
+ struct md_object *src_obj, const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int obf_unlink(const struct lu_env *env, struct md_object *pobj,
+ struct md_object *cobj, const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static struct md_dir_operations mdd_obf_dir_ops = {
+ .mdo_lookup = obf_lookup,
+ .mdo_create = obf_create,
+ .mdo_rename = obf_rename,
+ .mdo_link = obf_link,
+ .mdo_unlink = obf_unlink
+};
+
+/**
+ * Create special in-memory "fid" object for open-by-fid.
+ */
+static int mdd_obf_setup(const struct lu_env *env, struct mdd_device *m)
+{
+ struct mdd_object *mdd_obf;
+ struct lu_object *obf_lu_obj;
+ int rc = 0;
+
+ m->mdd_dot_lustre_objs.mdd_obf = mdd_object_find(env, m,
+ &LU_OBF_FID);
+ if (m->mdd_dot_lustre_objs.mdd_obf == NULL ||
+ IS_ERR(m->mdd_dot_lustre_objs.mdd_obf))
+ GOTO(out, rc = -ENOENT);
+
+ mdd_obf = m->mdd_dot_lustre_objs.mdd_obf;
+ mdd_obf->mod_obj.mo_dir_ops = &mdd_obf_dir_ops;
+ mdd_obf->mod_obj.mo_ops = &mdd_obf_obj_ops;
+ /* Don't allow objects to be created in "fid" dir */
+ mdd_obf->mod_flags |= IMMUTE_OBJ;
+
+ obf_lu_obj = mdd2lu_obj(mdd_obf);
+ obf_lu_obj->lo_header->loh_attr |= (LOHA_EXISTS | S_IFDIR);
+
+out:
+ return rc;
+}
+
+/** Setup ".lustre" directory object */
+static int mdd_dot_lustre_setup(const struct lu_env *env, struct mdd_device *m)
+{
+ struct dt_object *dt_dot_lustre;
+ struct lu_fid *fid = &mdd_env_info(env)->mti_fid;
+ int rc;
+
+ rc = create_dot_lustre_dir(env, m);
+ if (rc)
+ return rc;
+
+ dt_dot_lustre = dt_store_open(env, m->mdd_child, mdd_root_dir_name,
+ dot_lustre_name, fid);
+ if (IS_ERR(dt_dot_lustre)) {
+ rc = PTR_ERR(dt_dot_lustre);
+ GOTO(out, rc);
+ }
+
+ /* references are released in mdd_device_shutdown() */
+ m->mdd_dot_lustre = lu2mdd_obj(lu_object_locate(dt_dot_lustre->do_lu.lo_header,
+ &mdd_device_type));
+
+ m->mdd_dot_lustre->mod_obj.mo_dir_ops = &mdd_dot_lustre_dir_ops;
+ m->mdd_dot_lustre->mod_obj.mo_ops = &mdd_dot_lustre_obj_ops;
+
+ rc = mdd_obf_setup(env, m);
+ if (rc)
+ CERROR("Error initializing \"fid\" object - %d.\n", rc);
+
+out:
+ RETURN(rc);
+}
+
static int mdd_process_config(const struct lu_env *env,
struct lu_device *d, struct lustre_cfg *cfg)
{
ENTRY;
switch (cfg->lcfg_command) {
+ case LCFG_PARAM: {
+ struct lprocfs_static_vars lvars;
+
+ lprocfs_mdd_init_vars(&lvars);
+ rc = class_process_proc_param(PARAM_MDD, lvars.obd_vars, cfg,m);
+ if (rc > 0 || rc == -ENOSYS)
+ /* we don't understand; pass it on */
+ rc = next->ld_ops->ldo_process_config(env, next, cfg);
+ break;
+ }
case LCFG_SETUP:
rc = next->ld_ops->ldo_process_config(env, next, cfg);
if (rc)
GOTO(out, rc);
dt->dd_ops->dt_conf_get(env, dt, &m->mdd_dt_conf);
-
- rc = mdd_init_obd(env, m, cfg);
- if (rc) {
- CERROR("lov init error %d \n", rc);
- GOTO(out, rc);
- }
- rc = mdd_mount(env, m);
- if (rc)
- GOTO(out, rc);
- rc = mdd_txn_init_credits(env, m);
break;
case LCFG_CLEANUP:
+ mdd_lfsck_cleanup(env, m);
+ rc = next->ld_ops->ldo_process_config(env, next, cfg);
+ lu_dev_del_linkage(d->ld_site, d);
mdd_device_shutdown(env, m, cfg);
+ break;
default:
rc = next->ld_ops->ldo_process_config(env, next, cfg);
break;
out:
RETURN(rc);
}
-#if 0
-static int mdd_lov_set_nextid(const struct lu_env *env,
- struct mdd_device *mdd)
+
+static int mdd_recovery_complete(const struct lu_env *env,
+ struct lu_device *d)
{
- struct mds_obd *mds = &mdd->mdd_obd_dev->u.mds;
+ struct mdd_device *mdd = lu2mdd_dev(d);
+ struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
int rc;
ENTRY;
- LASSERT(mds->mds_lov_objids != NULL);
- rc = obd_set_info_async(mds->mds_osc_exp, strlen(KEY_NEXT_ID),
- KEY_NEXT_ID, mds->mds_lov_desc.ld_tgt_count,
- mds->mds_lov_objids, NULL);
+ LASSERT(mdd != NULL);
- RETURN(rc);
-}
+ /* XXX: orphans handling. */
+ __mdd_orphan_cleanup(env, mdd);
+ rc = next->ld_ops->ldo_recovery_complete(env, next);
-static int mdd_cleanup_unlink_llog(const struct lu_env *env,
- struct mdd_device *mdd)
-{
- /* XXX: to be implemented! */
- return 0;
+ RETURN(rc);
}
-#endif
-static int mdd_recovery_complete(const struct lu_env *env,
- struct lu_device *d)
+static int mdd_prepare(const struct lu_env *env,
+ struct lu_device *pdev,
+ struct lu_device *cdev)
{
- struct mdd_device *mdd = lu2mdd_dev(d);
+ struct mdd_device *mdd = lu2mdd_dev(cdev);
struct lu_device *next = &mdd->mdd_child->dd_lu_dev;
- struct obd_device *obd = mdd2obd_dev(mdd);
+ struct dt_object *root;
+ struct lu_fid fid;
int rc;
+
ENTRY;
+ rc = next->ld_ops->ldo_prepare(env, cdev, next);
+ if (rc)
+ GOTO(out, rc);
- LASSERT(mdd != NULL);
- LASSERT(obd != NULL);
-#if 0
- /* XXX: Do we need this in new stack? */
- rc = mdd_lov_set_nextid(env, mdd);
- if (rc) {
- CERROR("mdd_lov_set_nextid() failed %d\n",
- rc);
- RETURN(rc);
+ root = dt_store_open(env, mdd->mdd_child, "", mdd_root_dir_name,
+ &mdd->mdd_root_fid);
+ if (!IS_ERR(root)) {
+ LASSERT(root != NULL);
+ lu_object_put(env, &root->do_lu);
+ rc = orph_index_init(env, mdd);
+ } else {
+ rc = PTR_ERR(root);
}
+ if (rc)
+ GOTO(out, rc);
- /* XXX: cleanup unlink. */
- rc = mdd_cleanup_unlink_llog(env, mdd);
+ rc = mdd_dot_lustre_setup(env, mdd);
if (rc) {
- CERROR("mdd_cleanup_unlink_llog() failed %d\n",
- rc);
- RETURN(rc);
+ CERROR("Error(%d) initializing .lustre objects\n", rc);
+ GOTO(out, rc);
}
-#endif
- /* Call that with obd_recovering = 1 just to update objids */
- obd_notify(obd->u.mds.mds_osc_obd, NULL, (obd->obd_async_recov ?
- OBD_NOTIFY_SYNC_NONBLOCK : OBD_NOTIFY_SYNC), NULL);
- /* Drop obd_recovering to 0 and call o_postrecov to recover mds_lov */
- obd->obd_recovering = 0;
- obd->obd_type->typ_dt_ops->o_postrecov(obd);
+ /* we use capa file to declare llog changes,
+ * will be fixed with new llog in 2.3 */
+ root = dt_store_open(env, mdd->mdd_child, "", CAPA_KEYS, &fid);
+ if (IS_ERR(root))
+ GOTO(out, rc = PTR_ERR(root));
- /* XXX: orphans handling. */
- __mdd_orphan_cleanup(env, mdd);
- rc = next->ld_ops->ldo_recovery_complete(env, next);
+ mdd->mdd_capa = root;
- RETURN(rc);
+ rc = mdd_lfsck_setup(env, mdd);
+ if (rc) {
+ CERROR("%s: failed to initialize lfsck: rc = %d\n",
+ mdd2obd_dev(mdd)->obd_name, rc);
+ GOTO(out, rc);
+ }
+ rc = mdd_changelog_init(env, mdd);
+
+ GOTO(out, rc);
+
+out:
+ return rc;
}
-struct lu_device_operations mdd_lu_ops = {
- .ldo_object_alloc = mdd_object_alloc,
+const struct lu_device_operations mdd_lu_ops = {
+ .ldo_object_alloc = mdd_object_alloc,
.ldo_process_config = mdd_process_config,
- .ldo_recovery_complete = mdd_recovery_complete
+ .ldo_recovery_complete = mdd_recovery_complete,
+ .ldo_prepare = mdd_prepare,
};
/*
* No permission check is needed.
*/
static int mdd_statfs(const struct lu_env *env, struct md_device *m,
- struct kstatfs *sfs)
+ struct obd_statfs *sfs)
{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
int rc;
ENTRY;
/*
* No permission check is needed.
*/
-static int mdd_maxsize_get(const struct lu_env *env, struct md_device *m,
- int *md_size, int *cookie_size)
-{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- ENTRY;
-
- *md_size = mdd_lov_mdsize(env, mdd);
- *cookie_size = mdd_lov_cookiesize(env, mdd);
-
- RETURN(0);
-}
-
static int mdd_init_capa_ctxt(const struct lu_env *env, struct md_device *m,
int mode, unsigned long timeout, __u32 alg,
struct lustre_capa_key *keys)
{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- struct mds_obd *mds = &mdd2obd_dev(mdd)->u.mds;
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
int rc;
ENTRY;
- mds->mds_capa_keys = keys;
+ /* need barrier for mds_capa_keys access. */
+
rc = mdd_child_ops(mdd)->dt_init_capa_ctxt(env, mdd->mdd_child, mode,
timeout, alg, keys);
RETURN(rc);
struct md_device *m,
struct lustre_capa_key *key)
{
- struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- struct obd_export *lov_exp = mdd2obd_dev(mdd)->u.mds.mds_osc_exp;
- int rc;
- ENTRY;
+ /* we do not support capabilities ... */
+ return -EINVAL;
+}
- rc = obd_set_info_async(lov_exp, strlen(KEY_CAPA_KEY), KEY_CAPA_KEY,
- sizeof(*key), key, NULL);
- RETURN(rc);
+static int mdd_llog_ctxt_get(const struct lu_env *env, struct md_device *m,
+ int idx, void **h)
+{
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ *h = llog_group_get_ctxt(&mdd2obd_dev(mdd)->obd_olg, idx);
+ return (*h == NULL ? -ENOENT : 0);
+}
+
+static struct lu_device *mdd_device_free(const struct lu_env *env,
+ struct lu_device *lu)
+{
+ struct mdd_device *m = lu2mdd_dev(lu);
+ ENTRY;
+
+ LASSERT(cfs_atomic_read(&lu->ld_ref) == 0);
+ md_device_fini(&m->mdd_md_dev);
+ OBD_FREE_PTR(m);
+ RETURN(NULL);
}
static struct lu_device *mdd_device_alloc(const struct lu_env *env,
if (m == NULL) {
l = ERR_PTR(-ENOMEM);
} else {
- md_device_init(&m->mdd_md_dev, t);
+ int rc;
+
l = mdd2lu_dev(m);
- l->ld_ops = &mdd_lu_ops;
- m->mdd_md_dev.md_ops = &mdd_ops;
- md_upcall_init(&m->mdd_md_dev, NULL);
+ md_device_init(&m->mdd_md_dev, t);
+ rc = mdd_init0(env, m, t, lcfg);
+ if (rc != 0) {
+ mdd_device_free(env, l);
+ l = ERR_PTR(rc);
+ }
}
return l;
}
-static struct lu_device *mdd_device_free(const struct lu_env *env,
- struct lu_device *lu)
+/*
+ * we use exports to track all mdd users
+ */
+static int mdd_obd_connect(const struct lu_env *env, struct obd_export **exp,
+ struct obd_device *obd, struct obd_uuid *cluuid,
+ struct obd_connect_data *data, void *localdata)
{
- struct mdd_device *m = lu2mdd_dev(lu);
- struct lu_device *next = &m->mdd_child->dd_lu_dev;
- ENTRY;
+ struct mdd_device *mdd = lu2mdd_dev(obd->obd_lu_dev);
+ struct lustre_handle conn;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_CONFIG, "connect #%d\n", mdd->mdd_connects);
- LASSERT(atomic_read(&lu->ld_ref) == 0);
- md_device_fini(&m->mdd_md_dev);
- OBD_FREE_PTR(m);
- RETURN(next);
+ rc = class_connect(&conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
+
+ *exp = class_conn2export(&conn);
+
+ /* Why should there ever be more than 1 connect? */
+ LASSERT(mdd->mdd_connects == 0);
+ mdd->mdd_connects++;
+
+ RETURN(0);
}
-static struct obd_ops mdd_obd_device_ops = {
- .o_owner = THIS_MODULE
-};
+/*
+ * once last export (we don't count self-export) disappeared
+ * mdd can be released
+ */
+static int mdd_obd_disconnect(struct obd_export *exp)
+{
+ struct obd_device *obd = exp->exp_obd;
+ struct mdd_device *mdd = lu2mdd_dev(obd->obd_lu_dev);
+ int rc, release = 0;
+ ENTRY;
-/* context key constructor/destructor: mdd_ucred_key_init, mdd_ucred_key_fini */
-LU_KEY_INIT_FINI(mdd_ucred, struct md_ucred);
+ mdd->mdd_connects--;
+ if (mdd->mdd_connects == 0)
+ release = 1;
-static struct lu_context_key mdd_ucred_key = {
- .lct_tags = LCT_SESSION,
- .lct_init = mdd_ucred_key_init,
- .lct_fini = mdd_ucred_key_fini
-};
+ rc = class_disconnect(exp);
-struct md_ucred *md_ucred(const struct lu_env *env)
+ if (rc == 0 && release)
+ class_manual_cleanup(obd);
+ RETURN(rc);
+}
+
+static int mdd_obd_health_check(const struct lu_env *env,
+ struct obd_device *obd)
{
- LASSERT(env->le_ses != NULL);
- return lu_context_key_get(env->le_ses, &mdd_ucred_key);
+ struct mdd_device *mdd = lu2mdd_dev(obd->obd_lu_dev);
+ int rc;
+ ENTRY;
+
+ LASSERT(mdd);
+ rc = obd_health_check(env, mdd->mdd_child_exp->exp_obd);
+ RETURN(rc);
}
-EXPORT_SYMBOL(md_ucred);
+
+static struct obd_ops mdd_obd_device_ops = {
+ .o_owner = THIS_MODULE,
+ .o_connect = mdd_obd_connect,
+ .o_disconnect = mdd_obd_disconnect,
+ .o_health_check = mdd_obd_health_check
+};
/*
* context key constructor/destructor:
}
EXPORT_SYMBOL(md_capainfo);
+static int mdd_changelog_user_register(const struct lu_env *env,
+ struct mdd_device *mdd, int *id)
+{
+ struct llog_ctxt *ctxt;
+ struct llog_changelog_user_rec *rec;
+ int rc;
+ ENTRY;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),
+ LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ RETURN(-ENXIO);
+
+ OBD_ALLOC_PTR(rec);
+ if (rec == NULL) {
+ llog_ctxt_put(ctxt);
+ RETURN(-ENOMEM);
+ }
+
+ /* Assume we want it on since somebody registered */
+ rc = mdd_changelog_on(env, mdd, 1);
+ if (rc)
+ GOTO(out, rc);
+
+ rec->cur_hdr.lrh_len = sizeof(*rec);
+ rec->cur_hdr.lrh_type = CHANGELOG_USER_REC;
+ spin_lock(&mdd->mdd_cl.mc_user_lock);
+ if (mdd->mdd_cl.mc_lastuser == (unsigned int)(-1)) {
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+ CERROR("Maximum number of changelog users exceeded!\n");
+ GOTO(out, rc = -EOVERFLOW);
+ }
+ *id = rec->cur_id = ++mdd->mdd_cl.mc_lastuser;
+ rec->cur_endrec = mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ rc = llog_cat_add(env, ctxt->loc_handle, &rec->cur_hdr, NULL, NULL);
+
+ CDEBUG(D_IOCTL, "Registered changelog user %d\n", *id);
+out:
+ OBD_FREE_PTR(rec);
+ llog_ctxt_put(ctxt);
+ RETURN(rc);
+}
+
+struct mdd_changelog_user_data {
+ __u64 mcud_endrec; /**< purge record for this user */
+ __u64 mcud_minrec; /**< lowest changelog recno still referenced */
+ __u32 mcud_id;
+ __u32 mcud_minid; /**< user id with lowest rec reference */
+ __u32 mcud_usercount;
+ int mcud_found:1;
+};
+#define MCUD_UNREGISTER -1LL
+
+/** Two things:
+ * 1. Find the smallest record everyone is willing to purge
+ * 2. Update the last purgeable record for this user
+ */
+static int mdd_changelog_user_purge_cb(const struct lu_env *env,
+ struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct llog_changelog_user_rec *rec;
+ struct mdd_changelog_user_data *mcud = data;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ rec = (struct llog_changelog_user_rec *)hdr;
+
+ mcud->mcud_usercount++;
+
+ /* If we have a new endrec for this id, use it for the following
+ min check instead of its old value */
+ if (rec->cur_id == mcud->mcud_id)
+ rec->cur_endrec = max(rec->cur_endrec, mcud->mcud_endrec);
+
+ /* Track the minimum referenced record */
+ if (mcud->mcud_minid == 0 || mcud->mcud_minrec > rec->cur_endrec) {
+ mcud->mcud_minid = rec->cur_id;
+ mcud->mcud_minrec = rec->cur_endrec;
+ }
+
+ if (rec->cur_id != mcud->mcud_id)
+ RETURN(0);
+
+ /* Update this user's record */
+ mcud->mcud_found = 1;
+
+ /* Special case: unregister this user */
+ if (mcud->mcud_endrec == MCUD_UNREGISTER) {
+ struct llog_cookie cookie;
+
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_index = hdr->lrh_index;
+
+ rc = llog_cat_cancel_records(env, llh->u.phd.phd_cat_handle,
+ 1, &cookie);
+ if (rc == 0)
+ mcud->mcud_usercount--;
+
+ RETURN(rc);
+ }
+
+ /* Update the endrec */
+ CDEBUG(D_IOCTL, "Rewriting changelog user %d endrec to "LPU64"\n",
+ mcud->mcud_id, rec->cur_endrec);
+
+ /* hdr+1 is loc of data */
+ hdr->lrh_len -= sizeof(*hdr) + sizeof(struct llog_rec_tail);
+ rc = llog_write(env, llh, hdr, NULL, 0, (void *)(hdr + 1),
+ hdr->lrh_index);
+
+ RETURN(rc);
+}
+
+static int mdd_changelog_user_purge(const struct lu_env *env,
+ struct mdd_device *mdd, int id,
+ long long endrec)
+{
+ struct mdd_changelog_user_data data;
+ struct llog_ctxt *ctxt;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_IOCTL, "Purge request: id=%d, endrec=%lld\n", id, endrec);
+
+ data.mcud_id = id;
+ data.mcud_minid = 0;
+ data.mcud_minrec = 0;
+ data.mcud_usercount = 0;
+ data.mcud_endrec = endrec;
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ endrec = mdd->mdd_cl.mc_index;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+ if ((data.mcud_endrec == 0) ||
+ ((data.mcud_endrec > endrec) &&
+ (data.mcud_endrec != MCUD_UNREGISTER)))
+ data.mcud_endrec = endrec;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),
+ LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ return -ENXIO;
+
+ LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
+
+ rc = llog_cat_process(env, ctxt->loc_handle,
+ mdd_changelog_user_purge_cb, (void *)&data,
+ 0, 0);
+ if ((rc >= 0) && (data.mcud_minrec > 0)) {
+ CDEBUG(D_IOCTL, "Purging changelog entries up to "LPD64
+ ", referenced by "CHANGELOG_USER_PREFIX"%d\n",
+ data.mcud_minrec, data.mcud_minid);
+ rc = mdd_changelog_llog_cancel(env, mdd, data.mcud_minrec);
+ } else {
+ CWARN("Could not determine changelog records to purge; rc=%d\n",
+ rc);
+ }
+
+ llog_ctxt_put(ctxt);
+
+ if (!data.mcud_found) {
+ CWARN("No entry for user %d. Last changelog reference is "
+ LPD64" by changelog user %d\n", data.mcud_id,
+ data.mcud_minrec, data.mcud_minid);
+ rc = -ENOENT;
+ }
+
+ if (!rc && data.mcud_usercount == 0)
+ /* No more users; turn changelogs off */
+ rc = mdd_changelog_on(env, mdd, 0);
+
+ RETURN (rc);
+}
+
+/** mdd_iocontrol
+ * May be called remotely from mdt_iocontrol_handle or locally from
+ * mdt_iocontrol. Data may be freeform - remote handling doesn't enforce
+ * an obd_ioctl_data format (but local ioctl handler does).
+ * \param cmd - ioc
+ * \param len - data len
+ * \param karg - ioctl data, in kernel space
+ */
+static int mdd_iocontrol(const struct lu_env *env, struct md_device *m,
+ unsigned int cmd, int len, void *karg)
+{
+ struct mdd_device *mdd;
+ struct obd_ioctl_data *data = karg;
+ int rc;
+ ENTRY;
+
+ mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ /* Doesn't use obd_ioctl_data */
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_CLEAR: {
+ struct changelog_setinfo *cs = karg;
+ rc = mdd_changelog_user_purge(env, mdd, cs->cs_id,
+ cs->cs_recno);
+ RETURN(rc);
+ }
+ case OBD_IOC_GET_MNTOPT: {
+ mntopt_t *mntopts = (mntopt_t *)karg;
+ *mntopts = mdd->mdd_dt_conf.ddp_mntopts;
+ RETURN(0);
+ }
+ case OBD_IOC_START_LFSCK: {
+ struct lfsck_start *start = karg;
+ struct md_lfsck *lfsck = &mdd->mdd_lfsck;
+
+ /* Return the kernel service version. */
+ /* XXX: version can be used for compatibility in the future. */
+ start->ls_version = lfsck->ml_version;
+ rc = mdd_lfsck_start(env, lfsck, start);
+ RETURN(rc);
+ }
+ case OBD_IOC_STOP_LFSCK: {
+ rc = mdd_lfsck_stop(env, &mdd->mdd_lfsck);
+ RETURN(rc);
+ }
+ }
+
+ /* Below ioctls use obd_ioctl_data */
+ if (len != sizeof(*data)) {
+ CERROR("Bad ioctl size %d\n", len);
+ RETURN(-EINVAL);
+ }
+ if (data->ioc_version != OBD_IOCTL_VERSION) {
+ CERROR("Bad magic %x != %x\n", data->ioc_version,
+ OBD_IOCTL_VERSION);
+ RETURN(-EINVAL);
+ }
+
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_REG:
+ rc = mdd_changelog_user_register(env, mdd, &data->ioc_u32_1);
+ break;
+ case OBD_IOC_CHANGELOG_DEREG:
+ rc = mdd_changelog_user_purge(env, mdd, data->ioc_u32_1,
+ MCUD_UNREGISTER);
+ break;
+ default:
+ rc = -ENOTTY;
+ }
+
+ RETURN (rc);
+}
+
/* type constructor/destructor: mdd_type_init, mdd_type_fini */
-LU_TYPE_INIT_FINI(mdd, &mdd_thread_key, &mdd_ucred_key, &mdd_capainfo_key);
+LU_TYPE_INIT_FINI(mdd, &mdd_thread_key, &mdd_capainfo_key);
-struct md_device_operations mdd_ops = {
+const struct md_device_operations mdd_ops = {
.mdo_statfs = mdd_statfs,
.mdo_root_get = mdd_root_get,
- .mdo_maxsize_get = mdd_maxsize_get,
.mdo_init_capa_ctxt = mdd_init_capa_ctxt,
.mdo_update_capa_key= mdd_update_capa_key,
+ .mdo_llog_ctxt_get = mdd_llog_ctxt_get,
+ .mdo_iocontrol = mdd_iocontrol,
};
static struct lu_device_type_operations mdd_device_type_ops = {
.ldto_init = mdd_type_init,
.ldto_fini = mdd_type_fini,
+ .ldto_start = mdd_type_start,
+ .ldto_stop = mdd_type_stop,
+
.ldto_device_alloc = mdd_device_alloc,
.ldto_device_free = mdd_device_free,
- .ldto_device_init = mdd_device_init,
.ldto_device_fini = mdd_device_fini
};
OBD_FREE(info->mti_max_lmm, info->mti_max_lmm_size);
if (info->mti_max_cookie != NULL)
OBD_FREE(info->mti_max_cookie, info->mti_max_cookie_size);
+ mdd_buf_put(&info->mti_big_buf);
+
OBD_FREE_PTR(info);
}
/* context key: mdd_thread_key */
LU_CONTEXT_KEY_DEFINE(mdd, LCT_MD_THREAD);
+static struct lu_local_obj_desc llod_capa_key = {
+ .llod_name = CAPA_KEYS,
+ .llod_oid = MDD_CAPA_KEYS_OID,
+ .llod_is_index = 0,
+};
+
+static struct lu_local_obj_desc llod_mdd_orphan = {
+ .llod_name = orph_index_name,
+ .llod_oid = MDD_ORPHAN_OID,
+ .llod_is_index = 1,
+ .llod_feat = &dt_directory_features,
+};
+
+static struct lu_local_obj_desc llod_mdd_root = {
+ .llod_name = mdd_root_dir_name,
+ .llod_oid = MDD_ROOT_INDEX_OID,
+ .llod_is_index = 1,
+ .llod_feat = &dt_directory_features,
+};
+
+static struct lu_local_obj_desc llod_lfsck_bookmark = {
+ .llod_name = lfsck_bookmark_name,
+ .llod_oid = LFSCK_BOOKMARK_OID,
+ .llod_is_index = 0,
+};
+
static int __init mdd_mod_init(void)
{
- struct lprocfs_static_vars lvars;
- lprocfs_mdd_init_vars(&lvars);
- return class_register_type(&mdd_obd_device_ops, NULL, lvars.module_vars,
- LUSTRE_MDD_NAME, &mdd_device_type);
+ struct lprocfs_static_vars lvars;
+ int rc;
+
+ lprocfs_mdd_init_vars(&lvars);
+
+ rc = lu_kmem_init(mdd_caches);
+ if (rc)
+ return rc;
+
+ changelog_orig_logops = llog_osd_ops;
+ changelog_orig_logops.lop_cancel = llog_changelog_cancel;
+ changelog_orig_logops.lop_add = llog_cat_add_rec;
+ changelog_orig_logops.lop_declare_add = llog_cat_declare_add_rec;
+
+ llo_local_obj_register(&llod_capa_key);
+ llo_local_obj_register(&llod_mdd_orphan);
+ llo_local_obj_register(&llod_mdd_root);
+ llo_local_obj_register(&llod_lfsck_bookmark);
+
+ rc = class_register_type(&mdd_obd_device_ops, NULL, lvars.module_vars,
+ LUSTRE_MDD_NAME, &mdd_device_type);
+ if (rc)
+ lu_kmem_fini(mdd_caches);
+ return rc;
}
static void __exit mdd_mod_exit(void)
{
- class_unregister_type(LUSTRE_MDD_NAME);
+ llo_local_obj_unregister(&llod_capa_key);
+ llo_local_obj_unregister(&llod_mdd_orphan);
+ llo_local_obj_unregister(&llod_mdd_root);
+ llo_local_obj_unregister(&llod_lfsck_bookmark);
+
+ class_unregister_type(LUSTRE_MDD_NAME);
+ lu_kmem_fini(mdd_caches);
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Meta-data Device Prototype ("LUSTRE_MDD_NAME")");
MODULE_LICENSE("GPL");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff