/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * lov/lov.c
- *
- * Copyright (C) 2002 Cluster File Systems, Inc.
- * Author: Phil Schwan <phil@off.net>
+ * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
+ * Author: Phil Schwan <phil@clusterfs.com>
* Peter Braam <braam@clusterfs.com>
+ * Mike Shaver <shaver@clusterfs.com>
+ *
+ * This file is part of Lustre, http://www.lustre.org.
+ *
+ * Lustre is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * Lustre is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * This code is issued under the GNU General Public License.
- * See the file COPYING in this distribution
+ * You should have received a copy of the GNU General Public License
+ * along with Lustre; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#define EXPORT_SYMTAB
+#ifndef EXPORT_SYMTAB
+# define EXPORT_SYMTAB
+#endif
#define DEBUG_SUBSYSTEM S_LOV
-
+#ifdef __KERNEL__
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/seq_file.h>
+#include <asm/div64.h>
+#else
+#include <liblustre.h>
+#endif
+
#include <linux/obd_support.h>
#include <linux/lustre_lib.h>
#include <linux/lustre_net.h>
#include <linux/lustre_idl.h>
+#include <linux/lustre_dlm.h>
#include <linux/lustre_mds.h>
#include <linux/obd_class.h>
#include <linux/obd_lov.h>
-#include <linux/init.h>
-#include <asm/div64.h>
+#include <linux/obd_ost.h>
+#include <linux/lprocfs_status.h>
+
+#include "lov_internal.h"
/* obd methods */
-static int lov_connect(struct lustre_handle *conn, struct obd_device *obd,
- obd_uuid_t cluuid, struct recovd_obd *recovd,
- ptlrpc_recovery_cb_t recover)
+#define MAX_STRING_SIZE 128
+static int lov_connect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt,
+ int activate, struct obd_connect_data *conn_data,
+ unsigned long connect_flags)
{
- struct ptlrpc_request *req = NULL;
+ struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
+ struct obd_uuid *tgt_uuid = &tgt->uuid;
+
+#ifdef __KERNEL__
+ struct proc_dir_entry *lov_proc_dir;
+#endif
struct lov_obd *lov = &obd->u.lov;
- struct client_obd *mdc = &lov->mdcobd->u.cli;
- struct lov_desc *desc = &lov->desc;
- struct lustre_handle mdc_conn;
- obd_uuid_t *uuidarray;
- int rc, rc2, i;
+ struct lustre_handle conn = {0, };
+ struct obd_device *tgt_obd;
+ int rc;
+ ENTRY;
- MOD_INC_USE_COUNT;
- rc = class_connect(conn, obd, cluuid);
- if (rc) {
- MOD_DEC_USE_COUNT;
- RETURN(rc);
+ tgt_obd = class_find_client_obd(tgt_uuid, LUSTRE_OSC_NAME,
+ &obd->obd_uuid);
+
+ if (!tgt_obd) {
+ CERROR("Target %s not attached\n", tgt_uuid->uuid);
+ RETURN(-EINVAL);
}
- /* We don't want to actually do the underlying connections more than
- * once, so keep track. */
- lov->refcount++;
- if (lov->refcount > 1)
+ if (!tgt_obd->obd_set_up) {
+ CERROR("Target %s not set up\n", tgt_uuid->uuid);
+ RETURN(-EINVAL);
+ }
+
+ if (activate) {
+ tgt_obd->obd_no_recov = 0;
+ ptlrpc_activate_import(tgt_obd->u.cli.cl_import);
+ }
+
+ if (tgt_obd->u.cli.cl_import->imp_invalid) {
+ CERROR("not connecting OSC %s; administratively "
+ "disabled\n", tgt_uuid->uuid);
+ rc = obd_register_observer(tgt_obd, obd);
+ if (rc) {
+ CERROR("Target %s register_observer error %d; "
+ "will not be able to reactivate\n",
+ tgt_uuid->uuid, rc);
+ }
RETURN(0);
+ }
- /* retrieve LOV metadata from MDS */
- rc = obd_connect(&mdc_conn, lov->mdcobd, NULL, recovd, recover);
+ rc = obd_connect(&conn, tgt_obd, &lov_osc_uuid, conn_data,
+ connect_flags);
if (rc) {
- CERROR("cannot connect to mdc: rc = %d\n", rc);
- GOTO(out_conn, rc);
+ CERROR("Target %s connect error %d\n", tgt_uuid->uuid, rc);
+ RETURN(rc);
}
+ tgt->ltd_exp = class_conn2export(&conn);
- rc = mdc_getlovinfo(obd, &mdc_conn, &req);
- rc2 = obd_disconnect(&mdc_conn);
+ rc = obd_register_observer(tgt_obd, obd);
if (rc) {
- CERROR("cannot get lov info %d\n", rc);
- GOTO(out_conn, rc);
+ CERROR("Target %s register_observer error %d\n",
+ tgt_uuid->uuid, rc);
+ obd_disconnect(tgt->ltd_exp, 0);
+ tgt->ltd_exp = NULL;
+ RETURN(rc);
}
- if (rc2) {
- CERROR("error disconnecting from MDS %d\n", rc2);
- GOTO(out_conn, rc = rc2);
+ tgt->active = 1;
+ lov->desc.ld_active_tgt_count++;
+
+#ifdef __KERNEL__
+ lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
+ if (lov_proc_dir) {
+ struct obd_device *osc_obd = class_conn2obd(&conn);
+ struct proc_dir_entry *osc_symlink;
+ char name[MAX_STRING_SIZE + 1];
+
+ LASSERT(osc_obd != NULL);
+ LASSERT(osc_obd->obd_type != NULL);
+ LASSERT(osc_obd->obd_type->typ_name != NULL);
+ name[MAX_STRING_SIZE] = '\0';
+ snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
+ osc_obd->obd_type->typ_name,
+ osc_obd->obd_name);
+ osc_symlink = proc_symlink(osc_obd->obd_name, lov_proc_dir,
+ name);
+ if (osc_symlink == NULL) {
+ CERROR("could not register LOV target "
+ "/proc/fs/lustre/%s/%s/target_obds/%s\n",
+ obd->obd_type->typ_name, obd->obd_name,
+ osc_obd->obd_name);
+ lprocfs_remove(lov_proc_dir);
+ lov_proc_dir = NULL;
+ }
}
+#endif
- /* sanity... */
- if (req->rq_repmsg->bufcount < 2 ||
- req->rq_repmsg->buflens[0] < sizeof(*desc)) {
- CERROR("LOV desc: invalid descriptor returned\n");
- GOTO(out_conn, rc = -EINVAL);
- }
+ RETURN(0);
+}
- memcpy(desc, lustre_msg_buf(req->rq_repmsg, 0), sizeof(*desc));
- lov_unpackdesc(desc);
+static int lov_connect(struct lustre_handle *conn, struct obd_device *obd,
+ struct obd_uuid *cluuid, struct obd_connect_data *data,
+ unsigned long flags)
+{
+#ifdef __KERNEL__
+ struct proc_dir_entry *lov_proc_dir;
+#endif
+ struct lov_obd *lov = &obd->u.lov;
+ struct lov_tgt_desc *tgt;
+ struct obd_export *exp;
+ int rc, rc2, i;
+ ENTRY;
- if (req->rq_repmsg->buflens[1] < sizeof(*uuidarray)*desc->ld_tgt_count){
- CERROR("LOV desc: invalid uuid array returned\n");
- GOTO(out_conn, rc = -EINVAL);
- }
+ rc = class_connect(conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
- mdc->cl_max_mds_easize = lov_mds_md_size(desc->ld_tgt_count);
- mdc->cl_max_ost_easize = lov_stripe_md_size(desc->ld_tgt_count);
+ exp = class_conn2export(conn);
- if (memcmp(obd->obd_uuid, desc->ld_uuid, sizeof(desc->ld_uuid))) {
- CERROR("LOV desc: uuid %s not on mds device (%s)\n",
- obd->obd_uuid, desc->ld_uuid);
- GOTO(out_conn, rc = -EINVAL);
+ /* We don't want to actually do the underlying connections more than
+ * once, so keep track. */
+ lov->refcount++;
+ if (lov->refcount > 1) {
+ class_export_put(exp);
+ RETURN(0);
}
- if (desc->ld_tgt_count > 1000) {
- CERROR("LOV desc: target count > 1000 (%d)\n",
- desc->ld_tgt_count);
- GOTO(out_conn, rc = -EINVAL);
+#ifdef __KERNEL__
+ lov_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry,
+ NULL, NULL);
+ if (IS_ERR(lov_proc_dir)) {
+ CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.",
+ obd->obd_type->typ_name, obd->obd_name);
+ lov_proc_dir = NULL;
}
+#endif
- /* Because of 64-bit divide/mod operations only work with a 32-bit
- * divisor in a 32-bit kernel, we cannot support a stripe width
- * of 4GB or larger on 32-bit CPUs.
- */
- if ((desc->ld_default_stripe_count ?
- desc->ld_default_stripe_count : desc->ld_tgt_count) *
- desc->ld_default_stripe_size > ~0UL) {
- CERROR("LOV: stripe width "LPU64"x%u > %lu on 32-bit system\n",
- desc->ld_default_stripe_size,
- desc->ld_default_stripe_count ?
- desc->ld_default_stripe_count : desc->ld_tgt_count,~0UL);
- GOTO(out_conn, rc = -EINVAL);
+ /* connect_flags is the MDS number, save for use in lov_add_obd */
+ lov->lov_connect_flags = flags;
+ for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count; i++, tgt++) {
+ if (obd_uuid_empty(&tgt->uuid))
+ continue;
+ rc = lov_connect_obd(obd, tgt, 0, data, flags);
+ if (rc)
+ GOTO(out_disc, rc);
}
- lov->bufsize = sizeof(struct lov_tgt_desc) * desc->ld_tgt_count;
- OBD_ALLOC(lov->tgts, lov->bufsize);
- if (!lov->tgts) {
- CERROR("Out of memory\n");
- GOTO(out_conn, rc = -ENOMEM);
+ class_export_put(exp);
+ RETURN (0);
+
+ out_disc:
+#ifdef __KERNEL__
+ if (lov_proc_dir)
+ lprocfs_remove(lov_proc_dir);
+#endif
+
+ while (i-- > 0) {
+ struct obd_uuid uuid;
+ --tgt;
+ --lov->desc.ld_active_tgt_count;
+ tgt->active = 0;
+ /* save for CERROR below; (we know it's terminated) */
+ uuid = tgt->uuid;
+ rc2 = obd_disconnect(tgt->ltd_exp, 0);
+ if (rc2)
+ CERROR("error: LOV target %s disconnect on OST idx %d: "
+ "rc = %d\n", uuid.uuid, i, rc2);
}
+ class_disconnect(exp, 0);
+ RETURN (rc);
+}
+
+static int lov_disconnect_obd(struct obd_device *obd,
+ struct lov_tgt_desc *tgt,
+ unsigned long flags)
+{
+#ifdef __KERNEL__
+ struct proc_dir_entry *lov_proc_dir;
+#endif
+ struct obd_device *osc_obd = class_exp2obd(tgt->ltd_exp);
+ struct lov_obd *lov = &obd->u.lov;
+ int rc;
+ ENTRY;
- uuidarray = lustre_msg_buf(req->rq_repmsg, 1);
- for (i = 0; i < desc->ld_tgt_count; i++)
- memcpy(lov->tgts[i].uuid, uuidarray[i], sizeof(*uuidarray));
+#ifdef __KERNEL__
+ lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
+ if (lov_proc_dir) {
+ struct proc_dir_entry *osc_symlink;
- for (i = 0; i < desc->ld_tgt_count; i++) {
- struct obd_device *tgt = class_uuid2obd(uuidarray[i]);
- if (!tgt) {
- CERROR("Target %s not attached\n", uuidarray[i]);
- GOTO(out_disc, rc = -EINVAL);
- }
- if (!(tgt->obd_flags & OBD_SET_UP)) {
- CERROR("Target %s not set up\n", uuidarray[i]);
- GOTO(out_disc, rc = -EINVAL);
- }
- rc = obd_connect(&lov->tgts[i].conn, tgt, NULL, recovd,
- recover);
- if (rc) {
- CERROR("Target %s connect error %d\n",
- uuidarray[i], rc);
- GOTO(out_disc, rc);
+ osc_symlink = lprocfs_srch(lov_proc_dir, osc_obd->obd_name);
+ if (osc_symlink) {
+ lprocfs_remove(osc_symlink);
+ } else {
+ CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
+ obd->obd_type->typ_name, obd->obd_name,
+ osc_obd->obd_name);
}
- desc->ld_active_tgt_count++;
- lov->tgts[i].active = 1;
+ }
+#endif
+ if (obd->obd_no_recov) {
+ /* Pass it on to our clients.
+ * XXX This should be an argument to disconnect,
+ * XXX not a back-door flag on the OBD. Ah well.
+ */
+ if (osc_obd)
+ osc_obd->obd_no_recov = 1;
}
- out:
- ptlrpc_req_finished(req);
- return rc;
+ obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
+ rc = obd_disconnect(tgt->ltd_exp, flags);
+ if (rc) {
+ if (tgt->active) {
+ CERROR("Target %s disconnect error %d\n",
+ tgt->uuid.uuid, rc);
+ }
+ rc = 0;
+ }
- out_disc:
- while (i-- > 0) {
- desc->ld_active_tgt_count--;
- lov->tgts[i].active = 0;
- rc2 = obd_disconnect(&lov->tgts[i].conn);
- if (rc2)
- CERROR("LOV Target %s disconnect error: rc = %d\n",
- uuidarray[i], rc2);
+ if (tgt->active) {
+ tgt->active = 0;
+ lov->desc.ld_active_tgt_count--;
}
- OBD_FREE(lov->tgts, lov->bufsize);
- out_conn:
- class_disconnect(conn);
- goto out;
+ tgt->ltd_exp = NULL;
+ RETURN(0);
}
-static int lov_disconnect(struct lustre_handle *conn)
+static int lov_disconnect(struct obd_export *exp, unsigned long flags)
{
- struct obd_device *obd = class_conn2obd(conn);
+ struct obd_device *obd = class_exp2obd(exp);
+#ifdef __KERNEL__
+ struct proc_dir_entry *lov_proc_dir;
+#endif
struct lov_obd *lov = &obd->u.lov;
+ struct lov_tgt_desc *tgt;
int rc, i;
+ ENTRY;
if (!lov->tgts)
goto out_local;
- /* Only disconnect the underlying laters on the final disconnect. */
+ /* Only disconnect the underlying layers on the final disconnect. */
lov->refcount--;
if (lov->refcount != 0)
goto out_local;
- for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- if (!lov->tgts[i].active) {
- CERROR("Skipping disconnect for inactive OSC %s\n",
- lov->tgts[i].uuid);
- continue;
- }
-
- lov->desc.ld_active_tgt_count--;
- lov->tgts[i].active = 0;
- rc = obd_disconnect(&lov->tgts[i].conn);
- if (rc) {
- CERROR("Target %s disconnect error %d\n",
- lov->tgts[i].uuid, rc);
- RETURN(rc);
- }
+ for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count; i++, tgt++) {
+ if (tgt->ltd_exp)
+ lov_disconnect_obd(obd, tgt, flags);
}
- OBD_FREE(lov->tgts, lov->bufsize);
- lov->bufsize = 0;
- lov->tgts = NULL;
+#ifdef __KERNEL__
+ lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
+ if (lov_proc_dir) {
+ lprocfs_remove(lov_proc_dir);
+ } else {
+ CERROR("/proc/fs/lustre/%s/%s/target_obds missing.",
+ obd->obd_type->typ_name, obd->obd_name);
+ }
+#endif
+
out_local:
- rc = class_disconnect(conn);
- if (!rc)
- MOD_DEC_USE_COUNT;
- return rc;
+ rc = class_disconnect(exp, 0);
+ RETURN(rc);
}
/* Error codes:
* -EINVAL : UUID can't be found in the LOV's target list
* -ENOTCONN: The UUID is found, but the target connection is bad (!)
* -EBADF : The UUID is found, but the OBD is the wrong type (!)
- * -EALREADY: The OSC is already marked (in)active
*/
-static int lov_set_osc_active(struct lov_obd *lov, obd_uuid_t uuid,
+static int lov_set_osc_active(struct lov_obd *lov, struct obd_uuid *uuid,
int activate)
{
- struct obd_device *obd;
+ struct lov_tgt_desc *tgt;
int i, rc = 0;
ENTRY;
CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n",
- lov, uuid, activate);
+ lov, uuid->uuid, activate);
spin_lock(&lov->lov_lock);
- for (i = 0; i < lov->desc.ld_tgt_count; i++)
- if (strncmp(uuid, lov->tgts[i].uuid,
- sizeof(lov->tgts[i].uuid)) == 0)
+ for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count; i++, tgt++) {
+ if (tgt->ltd_exp == NULL)
+ continue;
+
+ CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n",
+ i, tgt->uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
+
+ if (obd_uuid_equals(uuid, &tgt->uuid))
break;
+ }
if (i == lov->desc.ld_tgt_count)
GOTO(out, rc = -EINVAL);
- obd = class_conn2obd(&lov->tgts[i].conn);
- if (obd == NULL) {
- LBUG();
- GOTO(out, rc = -ENOTCONN);
- }
-
- CDEBUG(D_INFO, "Found OBD %p type %s\n", obd, obd->obd_type->typ_name);
- if (strcmp(obd->obd_type->typ_name, "osc") != 0) {
- LBUG();
- GOTO(out, rc = -EBADF);
- }
- if (lov->tgts[i].active == activate) {
- CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
- activate ? "" : "in");
- GOTO(out, rc = -EALREADY);
+ if (tgt->active == activate) {
+ CDEBUG(D_INFO, "OSC %s already %sactive!\n", uuid->uuid,
+ activate ? "" : "in");
+ GOTO(out, rc);
}
- CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd, activate ? "" : "in");
+ CDEBUG(D_INFO, "Marking OSC %s %sactive\n", uuid->uuid,
+ activate ? "" : "in");
- lov->tgts[i].active = activate;
+ tgt->active = activate;
if (activate)
lov->desc.ld_active_tgt_count++;
else
return rc;
}
-static int lov_setup(struct obd_device *obd, obd_count len, void *buf)
+static int lov_notify(struct obd_device *obd, struct obd_device *watched,
+ int active, void *data)
{
- struct obd_ioctl_data* data = buf;
- struct lov_obd *lov = &obd->u.lov;
- int rc = 0;
+ struct obd_uuid *uuid;
+ int rc;
ENTRY;
- if (data->ioc_inllen1 < 1) {
- CERROR("osc setup requires an MDC UUID\n");
- RETURN(-EINVAL);
+ if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
+ CERROR("unexpected notification of %s %s!\n",
+ watched->obd_type->typ_name,
+ watched->obd_name);
+ return -EINVAL;
}
+ uuid = &watched->u.cli.cl_import->imp_target_uuid;
- if (data->ioc_inllen1 > 37) {
- CERROR("mdc UUID must be 36 characters or less\n");
- RETURN(-EINVAL);
+ /* Set OSC as active before notifying the observer, so the
+ * observer can use the OSC normally.
+ */
+ rc = lov_set_osc_active(&obd->u.lov, uuid, active);
+ if (rc) {
+ CERROR("%sactivation of %s failed: %d\n",
+ active ? "" : "de", uuid->uuid, rc);
+ RETURN(rc);
}
- spin_lock_init(&lov->lov_lock);
- lov->mdcobd = class_uuid2obd(data->ioc_inlbuf1);
- if (!lov->mdcobd) {
- CERROR("LOV %s cannot locate MDC %s\n", obd->obd_uuid,
- data->ioc_inlbuf1);
- rc = -EINVAL;
- }
+ if (obd->obd_observer)
+ /* Pass the notification up the chain. */
+ rc = obd_notify(obd->obd_observer, watched, active, data);
+
RETURN(rc);
}
+int lov_attach(struct obd_device *dev, obd_count len, void *data)
+{
+ struct lprocfs_static_vars lvars;
+ int rc;
+
+ lprocfs_init_vars(lov, &lvars);
+ rc = lprocfs_obd_attach(dev, lvars.obd_vars);
+ if (rc == 0) {
+#ifdef __KERNEL__
+ struct proc_dir_entry *entry;
+
+ entry = create_proc_entry("target_obd_status", 0444,
+ dev->obd_proc_entry);
+ if (entry == NULL) {
+ rc = -ENOMEM;
+ } else {
+ entry->proc_fops = &lov_proc_target_fops;
+ entry->data = dev;
+ }
+#endif
+ }
+ return rc;
+}
-/* the LOV expects oa->o_id to be set to the LOV object id */
-static int lov_create(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md **ea)
+int lov_detach(struct obd_device *dev)
{
- struct obd_export *export = class_conn2export(conn);
- struct lov_obd *lov;
- struct lov_stripe_md *lsm;
- struct lov_oinfo *loi;
- struct obdo *tmp;
- int ost_count, ost_idx, i, rc = 0;
- ENTRY;
+ return lprocfs_obd_detach(dev);
+}
- LASSERT(ea);
+static int lov_setup(struct obd_device *obd, obd_count len, void *buf)
+{
+ struct lov_obd *lov = &obd->u.lov;
+ struct lustre_cfg *lcfg = buf;
+ struct lov_desc *desc;
+ int count;
+ ENTRY;
- if (!export)
+ if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
+ CERROR("LOV setup requires a descriptor\n");
RETURN(-EINVAL);
-
- tmp = obdo_alloc();
- if (!tmp)
- RETURN(-ENOMEM);
-
- lov = &export->exp_obd->u.lov;
-
- spin_lock(&lov->lov_lock);
- ost_count = lov->desc.ld_tgt_count;
- oa->o_easize = lov_stripe_md_size(ost_count);
-
- lsm = *ea;
- if (!lsm) {
- OBD_ALLOC(lsm, oa->o_easize);
- if (!lsm) {
- spin_unlock(&lov->lov_lock);
- GOTO(out_tmp, rc = -ENOMEM);
- }
}
- LASSERT(oa->o_valid & OBD_MD_FLID);
- lsm->lsm_magic = LOV_MAGIC;
- lsm->lsm_mds_easize = lov_mds_md_size(ost_count);
- lsm->lsm_object_id = oa->o_id;
- if (!lsm->lsm_stripe_count)
- lsm->lsm_stripe_count = lov->desc.ld_default_stripe_count;
- if (!lsm->lsm_stripe_count)
- lsm->lsm_stripe_count = lov->desc.ld_active_tgt_count;
- else if (lsm->lsm_stripe_count > lov->desc.ld_active_tgt_count)
- lsm->lsm_stripe_count = lov->desc.ld_active_tgt_count;
-
- if (!lsm->lsm_stripe_size)
- lsm->lsm_stripe_size = lov->desc.ld_default_stripe_size;
-
+ desc = (struct lov_desc *)lustre_cfg_string(lcfg, 1);
+ if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
+ CERROR("descriptor size wrong: %d > %d\n",
+ (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
+ RETURN(-EINVAL);
+ }
+
/* Because of 64-bit divide/mod operations only work with a 32-bit
* divisor in a 32-bit kernel, we cannot support a stripe width
* of 4GB or larger on 32-bit CPUs.
*/
- if (lsm->lsm_stripe_size * lsm->lsm_stripe_count > ~0UL) {
+
+ count = desc->ld_default_stripe_count;
+ if (count && (count * desc->ld_default_stripe_size) > ~0UL) {
CERROR("LOV: stripe width "LPU64"x%u > %lu on 32-bit system\n",
- lsm->lsm_stripe_size, lsm->lsm_stripe_count, ~0UL);
- spin_unlock(&lov->lov_lock);
- GOTO(out_free, rc = -EINVAL);
+ desc->ld_default_stripe_size, count, ~0UL);
+ RETURN(-EINVAL);
+ }
+ if (desc->ld_tgt_count > 0) {
+ lov->bufsize= sizeof(struct lov_tgt_desc) * desc->ld_tgt_count;
+ } else {
+ lov->bufsize = sizeof(struct lov_tgt_desc) * LOV_MAX_TGT_COUNT;
+ }
+ OBD_ALLOC(lov->tgts, lov->bufsize);
+ if (lov->tgts == NULL) {
+ lov->bufsize = 0;
+ CERROR("couldn't allocate %d bytes for target table.\n",
+ lov->bufsize);
+ RETURN(-EINVAL);
}
- lsm->lsm_ost_count = ost_count;
- if (!lsm->lsm_stripe_offset) {
- int mult = lsm->lsm_object_id * lsm->lsm_stripe_count;
- int stripe_offset = mult % ost_count;
- int sub_offset = (mult / ost_count) % lsm->lsm_stripe_count;
+ desc->ld_tgt_count = 0;
+ desc->ld_active_tgt_count = 0;
+ lov->desc = *desc;
+ spin_lock_init(&lov->lov_lock);
+ sema_init(&lov->lov_llog_sem, 1);
+
+ RETURN(0);
+}
+
+static int lov_cleanup(struct obd_device *obd, int flags)
+{
+ struct lov_obd *lov = &obd->u.lov;
+
+ OBD_FREE(lov->tgts, lov->bufsize);
+ RETURN(0);
+}
+
+static int
+lov_add_obd(struct obd_device *obd, struct obd_uuid *uuidp, int index, int gen)
+{
+ struct lov_obd *lov = &obd->u.lov;
+ struct lov_tgt_desc *tgt;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d\n",
+ uuidp->uuid, index, gen);
- lsm->lsm_stripe_offset = stripe_offset + sub_offset;
+ if ((index < 0) || (index >= LOV_MAX_TGT_COUNT)) {
+ CERROR("request to add OBD %s at invalid index: %d\n",
+ uuidp->uuid, index);
+ RETURN(-EINVAL);
}
- /* Pick the OSTs before we release the lock */
- ost_idx = lsm->lsm_stripe_offset;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- do {
- ost_idx = (ost_idx + 1) % ost_count;
- } while (!lov->tgts[ost_idx].active);
- CDEBUG(D_INFO, "Using ost_idx %d (uuid %s)\n", ost_idx,
- lov->tgts[ost_idx].uuid);
- loi->loi_ost_idx = ost_idx;
+ if (gen <= 0) {
+ CERROR("request to add OBD %s with invalid generation: %d\n",
+ uuidp->uuid, gen);
+ RETURN(-EINVAL);
}
- spin_unlock(&lov->lov->lock);
+ tgt = lov->tgts + index;
+ if (!obd_uuid_empty(&tgt->uuid)) {
+ CERROR("OBD already assigned at LOV target index %d\n",
+ index);
+ RETURN(-EEXIST);
+ }
- CDEBUG(D_INODE, "allocating %d subobjs for objid "LPX64" at idx %d\n",
- lsm->lsm_stripe_count,lsm->lsm_object_id,lsm->lsm_stripe_offset);
+ tgt->uuid = *uuidp;
+ /* XXX - add a sanity check on the generation number. */
+ tgt->ltd_gen = gen;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- struct lov_stripe_md obj_md;
- struct lov_stripe_md *obj_mdp = &obj_md;
+ if (index >= lov->desc.ld_tgt_count)
+ lov->desc.ld_tgt_count = index + 1;
- ost_idx = loi->loi_ost_idx;
+ CDEBUG(D_CONFIG, "idx: %d ltd_gen: %d ld_tgt_count: %d\n",
+ index, tgt->ltd_gen, lov->desc.ld_tgt_count);
- /* create data objects with "parent" OA */
- memcpy(tmp, oa, sizeof(*tmp));
- tmp->o_easize = sizeof(struct lov_stripe_md);
- rc = obd_create(&lov->tgts[ost_idx].conn, tmp, &obj_mdp);
- if (rc) {
- CERROR("error creating objid "LPX64" sub-object on "
- "OST idx %d: rc = %d\n", oa->o_id, ost_idx, rc);
- GOTO(out_cleanup, rc);
- }
- loi->loi_id = tmp->o_id;
- loi->loi_size = tmp->o_size;
- CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64" at idx %d\n",
- lsm->lsm_object_id, loi->loi_id, ost_idx);
- }
+ if (lov->refcount == 0)
+ RETURN(0);
- *ea = lsm;
+ if (tgt->ltd_exp) {
+ struct obd_device *osc_obd;
- out_tmp:
- obdo_free(tmp);
- return rc;
+ osc_obd = class_exp2obd(tgt->ltd_exp);
+ if (osc_obd)
+ osc_obd->obd_no_recov = 0;
+ }
- out_cleanup:
- while (i-- > 0) {
- int err;
+ rc = lov_connect_obd(obd, tgt, 1, NULL, lov->lov_connect_flags);
+ if (rc)
+ GOTO(out, rc);
- --loi;
- /* destroy already created objects here */
- memcpy(tmp, oa, sizeof(*tmp));
- tmp->o_id = loi->loi_id;
- err = obd_destroy(&lov->tgts[loi->loi_ost_idx].conn, tmp, NULL);
- if (err)
- CERROR("Failed to uncreate objid "LPX64" subobj "
- LPX64" on OST idx %d: rc = %d\n",
- oa->o_id, loi->loi_id, loi->loi_ost_idx,
- err);
+ if (obd->obd_observer) {
+ /* tell the mds_lov about the new target */
+ rc = obd_notify(obd->obd_observer, tgt->ltd_exp->exp_obd, 1,
+ (void *)index);
}
- out_free:
- OBD_FREE(lsm, oa->o_easize);
- goto out_tmp;
+
+ GOTO(out, rc);
+ out:
+ if (rc && tgt->ltd_exp != NULL)
+ lov_disconnect_obd(obd, tgt, 0);
+ return rc;
}
-static int lov_destroy(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *lsm)
+static int
+lov_del_obd(struct obd_device *obd, struct obd_uuid *uuidp, int index, int gen)
{
- struct obdo tmp;
- struct obd_export *export = class_conn2export(conn);
- struct lov_obd *lov;
- struct lov_oinfo *loi;
- int rc = 0, i;
+ struct lov_obd *lov = &obd->u.lov;
+ struct lov_tgt_desc *tgt;
+ int count = lov->desc.ld_tgt_count;
+ int rc = 0;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea for destruction\n");
+ CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d\n",
+ uuidp->uuid, index, gen);
+
+ if (index >= count) {
+ CERROR("LOV target index %d >= number of LOV OBDs %d.\n",
+ index, count);
RETURN(-EINVAL);
}
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
+ tgt = lov->tgts + index;
+
+ if (obd_uuid_empty(&tgt->uuid)) {
+ CERROR("LOV target at index %d is not setup.\n", index);
RETURN(-EINVAL);
}
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
-
- lov = &export->exp_obd->u.lov;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- /* create data objects with "parent" OA */
- memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = loi->loi_id;
- rc = obd_destroy(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL);
- if (rc)
- CERROR("Error destroying objid "LPX64" subobj "LPX64
- " on OST idx %d\n: rc = %d",
- oa->o_id, loi->loi_id, loi->loi_ost_idx, rc);
+ if (!obd_uuid_equals(uuidp, &tgt->uuid)) {
+ CERROR("LOV target UUID %s at index %d doesn't match %s.\n",
+ tgt->uuid.uuid, index, uuidp->uuid);
+ RETURN(-EINVAL);
}
- RETURN(rc);
-}
-/* compute object size given "stripeno" and the ost size */
-static obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size,
- int stripeno)
-{
- unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_size;
- obd_size lov_size;
+ if (tgt->ltd_exp) {
+ struct obd_device *osc_obd;
+
+ osc_obd = class_exp2obd(tgt->ltd_exp);
+ if (osc_obd) {
+ osc_obd->obd_no_recov = 1;
+ rc = obd_llog_finish(osc_obd, &osc_obd->obd_llogs, 1);
+ if (rc)
+ CERROR("osc_llog_finish error: %d\n", rc);
+ }
+ lov_disconnect_obd(obd, tgt, 0);
+ }
- if (ost_size == 0)
- return 0;
+ /* XXX - right now there is a dependency on ld_tgt_count being the
+ * maximum tgt index for computing the mds_max_easize. So we can't
+ * shrink it. */
- /* do_div(a, b) returns a % b, and a = a / b */
- stripe_size = do_div(ost_size, ssize);
+ /* lt_gen = 0 will mean it will not match the gen of any valid loi */
+ memset(tgt, 0, sizeof(*tgt));
- if (stripe_size)
- lov_size = ost_size * swidth + stripeno * ssize + stripe_size;
- else
- lov_size = (ost_size - 1) * swidth + (stripeno + 1) * ssize;
+ CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n",
+ tgt->uuid.uuid, index, tgt->ltd_gen, tgt->ltd_exp, tgt->active);
- return lov_size;
+ RETURN(rc);
}
-static void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_flag valid,
- struct lov_stripe_md *lsm, int stripeno, int *new)
+static int lov_process_config(struct obd_device *obd, obd_count len, void *buf)
{
- if (*new) {
- obdo_cpy_md(tgt, src, valid);
- if (valid & OBD_MD_FLSIZE)
- tgt->o_size = lov_stripe_size(lsm,src->o_size,stripeno);
- *new = 0;
- } else {
- if (valid & OBD_MD_FLSIZE) {
- /* this handles sparse files properly */
- obd_size lov_size;
+ struct lustre_cfg *lcfg = buf;
+ struct obd_uuid obd_uuid;
+ int cmd;
+ int index;
+ int gen;
+ int rc = 0;
+ ENTRY;
- lov_size = lov_stripe_size(lsm, src->o_size, stripeno);
- if (lov_size > tgt->o_size)
- tgt->o_size = lov_size;
- }
- if (valid & OBD_MD_FLBLOCKS)
- tgt->o_blocks += src->o_blocks;
- if (valid & OBD_MD_FLCTIME && tgt->o_ctime < src->o_ctime)
- tgt->o_ctime = src->o_ctime;
- if (valid & OBD_MD_FLMTIME && tgt->o_mtime < src->o_mtime)
- tgt->o_mtime = src->o_mtime;
+ switch(cmd = lcfg->lcfg_command) {
+ case LCFG_LOV_ADD_OBD:
+ case LCFG_LOV_DEL_OBD: {
+ if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
+ GOTO(out, rc = -EINVAL);
+
+ obd_str2uuid(&obd_uuid, lustre_cfg_string(lcfg, 1));
+
+ if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1)
+ GOTO(out, rc = -EINVAL);
+ if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
+ GOTO(out, rc = -EINVAL);
+ if (cmd == LCFG_LOV_ADD_OBD)
+ rc = lov_add_obd(obd, &obd_uuid, index, gen);
+ else
+ rc = lov_del_obd(obd, &obd_uuid, index, gen);
+ GOTO(out, rc);
}
+ default: {
+ CERROR("Unknown command: %d\n", lcfg->lcfg_command);
+ GOTO(out, rc = -EINVAL);
+
+ }
+ }
+out:
+ RETURN(rc);
}
-static int lov_getattr(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *lsm)
+#ifndef log2
+#define log2(n) ffz(~(n))
+#endif
+
+static int lov_clear_orphans(struct obd_export *export,
+ struct obdo *src_oa,
+ struct lov_stripe_md **ea,
+ struct obd_trans_info *oti)
{
- struct obdo tmp;
- struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
- struct lov_oinfo *loi;
+ struct obdo *tmp_oa;
+ struct obd_uuid *ost_uuid = NULL;
int rc = 0, i;
- int new = 1;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
- RETURN(-EINVAL);
- }
+ LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
+ src_oa->o_flags == OBD_FL_DELORPHAN);
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
- RETURN(-EINVAL);
- }
+ lov = &export->exp_obd->u.lov;
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
+ tmp_oa = obdo_alloc();
+ if (tmp_oa == NULL)
+ RETURN(-ENOMEM);
- lov = &export->exp_obd->u.lov;
- oa->o_size = 0;
- oa->o_blocks = 0;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ if (src_oa->o_valid & OBD_MD_FLINLINE) {
+ ost_uuid = (struct obd_uuid *)src_oa->o_inline;
+ CDEBUG(D_HA, "clearing orphans only for %s\n",
+ ost_uuid->uuid);
+ }
+
+ for (i = 0; i < lov->desc.ld_tgt_count; i++) {
int err;
+ struct lov_stripe_md obj_md;
+ struct lov_stripe_md *obj_mdp = &obj_md;
+
+ /*
+ * if called for a specific target, we don't care if it is not
+ * active.
+ */
+ if (lov->tgts[i].active == 0 && ost_uuid == NULL) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", i);
+ continue;
+ }
- if (loi->loi_id == 0)
+ if (ost_uuid && !obd_uuid_equals(ost_uuid, &lov->tgts[i].uuid))
continue;
- /* create data objects with "parent" OA */
- memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = loi->loi_id;
+ /*
+ * setting up objid OSS objects should be destroyed starting
+ * from it.
+ */
+ memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
+ tmp_oa->o_valid |= OBD_MD_FLID;
+ tmp_oa->o_id = oti->oti_objid[i];
- err = obd_getattr(&lov->tgts[loi->loi_ost_idx].conn, &tmp,NULL);
+ /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
+ err = obd_create(lov->tgts[i].ltd_exp, tmp_oa, NULL, 0,
+ &obj_mdp, oti);
if (err) {
- CERROR("Error getattr objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n",
- oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
- if (!rc)
- rc = err;
- continue; /* XXX or break? */
+ /*
+ * this export will be disabled until it is recovered,
+ * and then orphan recovery will be completed.
+ */
+ CERROR("error in orphan recovery on OST idx %d/%d: "
+ "rc = %d\n", i, lov->desc.ld_tgt_count, err);
}
- lov_merge_attrs(oa, &tmp, tmp.o_valid, lsm, i, &new);
+
+ if (ost_uuid)
+ break;
}
+ obdo_free(tmp_oa);
RETURN(rc);
}
-static int lov_setattr(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *lsm)
+/* the LOV expects oa->o_id to be set to the LOV object id */
+static int
+lov_create(struct obd_export *exp, struct obdo *src_oa,
+ void *acl, int acl_size, struct lov_stripe_md **ea,
+ struct obd_trans_info *oti)
{
- struct obdo tmp;
- struct obd_export *export = class_conn2export(conn);
+ struct lov_request_set *set = NULL;
+ struct list_head *pos;
struct lov_obd *lov;
- struct lov_oinfo *loi;
- int rc = 0, i;
+ int rc = 0;
ENTRY;
- /* Note that this code is currently unused, hence LBUG(), just
- * to know when/if it is ever revived that it needs cleanups.
- */
- LBUG();
-
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
+ LASSERT(ea != NULL);
+ if (exp == NULL)
RETURN(-EINVAL);
+
+ if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
+ src_oa->o_flags == OBD_FL_DELORPHAN) {
+ rc = lov_clear_orphans(exp, src_oa, ea, oti);
+ RETURN(rc);
}
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
- RETURN(-EINVAL);
+ lov = &exp->exp_obd->u.lov;
+ if (!lov->desc.ld_active_tgt_count)
+ RETURN(-EIO);
+
+ LASSERT(oti->oti_flags & OBD_MODE_CROW);
+
+ /* main creation loop */
+ rc = lov_prep_create_set(exp, ea, src_oa, oti, &set);
+ if (rc)
+ RETURN(rc);
+
+ list_for_each (pos, &set->set_list) {
+ struct lov_request *req =
+ list_entry(pos, struct lov_request, rq_link);
+
+ /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
+ rc = obd_create(lov->tgts[req->rq_idx].ltd_exp,
+ req->rq_oa, NULL, 0, &req->rq_md, oti);
+ lov_update_create_set(set, req, rc);
}
+ rc = lov_fini_create_set(set, ea);
+ RETURN(rc);
+}
+
+#define lsm_bad_magic(LSMP) \
+({ \
+ struct lov_stripe_md *_lsm__ = (LSMP); \
+ int _ret__ = 0; \
+ if (!_lsm__) { \
+ CERROR("LOV requires striping ea\n"); \
+ _ret__ = 1; \
+ } else if (_lsm__->lsm_magic != LOV_MAGIC) { \
+ CERROR("LOV striping magic bad %#x != %#x\n", \
+ _lsm__->lsm_magic, LOV_MAGIC); \
+ _ret__ = 1; \
+ } \
+ _ret__; \
+})
+
+static int lov_destroy(struct obd_export *exp, struct obdo *oa,
+ struct lov_stripe_md *lsm, struct obd_trans_info *oti)
+{
+ struct lov_request_set *set;
+ struct lov_request *req;
+ struct list_head *pos;
+ struct lov_obd *lov;
+ int rc = 0;
+ ENTRY;
- if (!export || !export->exp_obd)
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ if (!exp || !exp->exp_obd)
RETURN(-ENODEV);
- /* size changes should go through punch and not setattr */
- LASSERT(!(oa->o_valid & OBD_MD_FLSIZE));
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_destroy_set(exp, oa, lsm, oti, &set);
+ if (rc)
+ RETURN(rc);
- lov = &export->exp_obd->u.lov;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
+ list_for_each (pos, &set->set_list) {
int err;
+ req = list_entry(pos, struct lov_request, rq_link);
- /* create data objects with "parent" OA */
- memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = loi->loi_id;
-
- err = obd_setattr(&lov->tgts[loi->loi_ost_idx].conn, &tmp,NULL);
- if (err) {
- CERROR("Error setattr objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n",
- oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
+ /* XXX update the cookie position */
+ oti->oti_logcookies = set->set_cookies + req->rq_stripe;
+ rc = obd_destroy(lov->tgts[req->rq_idx].ltd_exp, req->rq_oa,
+ NULL, oti);
+ err = lov_update_common_set(set, req, rc);
+ if (rc) {
+ CERROR("error: destroying objid "LPX64" subobj "
+ LPX64" on OST idx %d: rc = %d\n",
+ set->set_oa->o_id, req->rq_oa->o_id,
+ req->rq_idx, rc);
if (!rc)
rc = err;
}
}
+ lov_fini_destroy_set(set);
RETURN(rc);
}
-static int lov_open(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *lsm)
+static int lov_getattr(struct obd_export *exp, struct obdo *oa,
+ struct lov_stripe_md *lsm)
{
- struct obdo *tmp;
- struct obd_export *export = class_conn2export(conn);
+ struct lov_request_set *set;
+ struct lov_request *req;
+ struct list_head *pos;
struct lov_obd *lov;
- struct lov_oinfo *loi;
- int new = 1;
- int rc = 0, i;
+ int err = 0, rc = 0;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea for opening\n");
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
- }
-
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
- RETURN(-EINVAL);
- }
- if (!export || !export->exp_obd)
+ if (!exp || !exp->exp_obd)
RETURN(-ENODEV);
- tmp = obdo_alloc();
- if (!tmp)
- RETURN(-ENOMEM);
-
- lov = &export->exp_obd->u.lov;
- oa->o_size = 0;
- oa->o_blocks = 0;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- int err;
+ lov = &exp->exp_obd->u.lov;
+
+ rc = lov_prep_getattr_set(exp, oa, lsm, &set);
+ if (rc)
+ RETURN(rc);
- /* create data objects with "parent" OA */
- memcpy(tmp, oa, sizeof(*tmp));
- tmp->o_id = loi->loi_id;
+ list_for_each (pos, &set->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
+ "%u\n", oa->o_id, req->rq_stripe, req->rq_oa->o_id,
+ req->rq_idx);
- err = obd_open(&lov->tgts[loi->loi_ost_idx].conn, tmp, NULL);
+ rc = obd_getattr(lov->tgts[req->rq_idx].ltd_exp,
+ req->rq_oa, NULL);
+ err = lov_update_common_set(set, req, rc);
if (err) {
- CERROR("Error open objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n",
- oa->o_id, lsm->lsm_oinfo[i].loi_id,
- loi->loi_ost_idx, rc);
- if (!rc)
- rc = err;
+ CERROR("error: getattr objid "LPX64" subobj "
+ LPX64" on OST idx %d: rc = %d\n",
+ set->set_oa->o_id, req->rq_oa->o_id,
+ req->rq_idx, err);
+ break;
}
-
- lov_merge_attrs(oa, tmp, tmp->o_valid, lsm, i, &new);
}
- /* FIXME: returning an error, but having opened some objects is a bad
- * idea, since they will likely never be closed. We either
- * need to not return an error if _some_ objects could be
- * opened, and leave it to read/write to return -EIO (with
- * hopefully partial error status) or close all opened objects
- * and return an error. I think the former is preferred.
- */
- obdo_free(tmp);
+
+ rc = lov_fini_getattr_set(set);
+ if (err)
+ rc = err;
RETURN(rc);
}
-static int lov_close(struct lustre_handle *conn, struct obdo *oa,
- struct lov_stripe_md *lsm)
+static int lov_getattr_interpret(struct ptlrpc_request_set *rqset, void *data,
+ int rc)
{
- struct obdo tmp;
- struct obd_export *export = class_conn2export(conn);
+ struct lov_request_set *lovset = (struct lov_request_set *)data;
+ ENTRY;
+
+ /* don't do attribute merge if this aysnc op failed */
+ if (rc) {
+ lovset->set_completes = 0;
+ lov_fini_getattr_set(lovset);
+ } else {
+ rc = lov_fini_getattr_set(lovset);
+ }
+ RETURN (rc);
+}
+
+static int lov_getattr_async(struct obd_export *exp, struct obdo *oa,
+ struct lov_stripe_md *lsm,
+ struct ptlrpc_request_set *rqset)
+{
+ struct lov_request_set *lovset;
struct lov_obd *lov;
- struct lov_oinfo *loi;
- int rc = 0, i;
+ struct list_head *pos;
+ struct lov_request *req;
+ int rc = 0;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
+
+ if (!exp || !exp->exp_obd)
+ RETURN(-ENODEV);
+
+ lov = &exp->exp_obd->u.lov;
+
+ rc = lov_prep_getattr_set(exp, oa, lsm, &lovset);
+ if (rc)
+ RETURN(rc);
+
+ CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
+ lsm->lsm_object_id, lsm->lsm_stripe_count, lsm->lsm_stripe_size);
+
+ list_for_each (pos, &lovset->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
+ "%u\n", oa->o_id, req->rq_stripe, req->rq_oa->o_id,
+ req->rq_idx);
+ rc = obd_getattr_async(lov->tgts[req->rq_idx].ltd_exp,
+ req->rq_oa, NULL, rqset);
+ if (rc) {
+ CERROR("error: getattr objid "LPX64" subobj "
+ LPX64" on OST idx %d: rc = %d\n",
+ lovset->set_oa->o_id, req->rq_oa->o_id,
+ req->rq_idx, rc);
+ GOTO(out, rc);
+ }
+ lov_update_common_set(lovset, req, rc);
}
+
+ LASSERT(rc == 0);
+ LASSERT (rqset->set_interpret == NULL);
+ rqset->set_interpret = lov_getattr_interpret;
+ rqset->set_arg = (void *)lovset;
+ RETURN(rc);
+out:
+ LASSERT(rc);
+ lov_fini_getattr_set(lovset);
+ RETURN(rc);
+}
+
+static int lov_setattr(struct obd_export *exp, struct obdo *src_oa,
+ struct lov_stripe_md *lsm, struct obd_trans_info *oti)
+{
+ struct lov_request_set *set;
+ struct lov_obd *lov;
+ struct list_head *pos;
+ struct lov_request *req;
+ int err = 0, rc = 0;
+ ENTRY;
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
- }
- if (!export || !export->exp_obd)
+ if (!exp || !exp->exp_obd)
RETURN(-ENODEV);
- lov = &export->exp_obd->u.lov;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- int err;
+ LASSERT(!(src_oa->o_valid & ~(OBD_MD_FLID|OBD_MD_FLTYPE | OBD_MD_FLMODE|
+ OBD_MD_FLATIME | OBD_MD_FLMTIME |
+ OBD_MD_FLCTIME | OBD_MD_FLFLAGS |
+ OBD_MD_FLSIZE | OBD_MD_FLGROUP |
+ OBD_MD_FLUID | OBD_MD_FLGID)));
+
+ LASSERT(!(src_oa->o_valid & OBD_MD_FLGROUP) || src_oa->o_gr > 0);
- /* create data objects with "parent" OA */
- memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = loi->loi_id;
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_setattr_set(exp, src_oa, lsm, NULL, &set);
+ if (rc)
+ RETURN(rc);
- err = obd_close(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL);
+ list_for_each (pos, &set->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ rc = obd_setattr(lov->tgts[req->rq_idx].ltd_exp, req->rq_oa,
+ NULL, NULL);
+ err = lov_update_common_set(set, req, rc);
if (err) {
- CERROR("Error close objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n",
- oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
+ CERROR("error: setattr objid "LPX64" subobj "
+ LPX64" on OST idx %d: rc = %d\n",
+ set->set_oa->o_id, req->rq_oa->o_id,
+ req->rq_idx, err);
if (!rc)
rc = err;
}
}
+ err = lov_fini_setattr_set(set);
+ if (!rc)
+ rc = err;
RETURN(rc);
}
-#ifndef log2
-#define log2(n) ffz(~(n))
-#endif
-
-#warning FIXME: merge these two functions now that they are nearly the same
-
-/* compute ost offset in stripe "stripeno" corresponding to offset "lov_off" */
-static obd_off lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off,
- int stripeno)
+static int lov_revalidate_policy(struct lov_obd *lov, struct lov_stripe_md *lsm)
{
- unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_off, this_stripe;
+ static int next_idx = 0;
+ struct lov_tgt_desc *tgt;
+ int i, count;
- if (lov_off == OBD_OBJECT_EOF || lov_off == 0)
- return lov_off;
+ /* XXX - we should do something clever and take lsm
+ * into account but just do round robin for now. */
- /* do_div(a, b) returns a % b, and a = a / b */
- stripe_off = do_div(lov_off, swidth);
+ /* last_idx must always be less that count because
+ * ld_tgt_count currently cannot shrink. */
+ count = lov->desc.ld_tgt_count;
- this_stripe = stripeno * ssize;
- if (stripe_off <= this_stripe)
- stripe_off = 0;
- else {
- stripe_off -= this_stripe;
-
- if (stripe_off > ssize)
- stripe_off = ssize;
+ for (i = next_idx, tgt = lov->tgts + i; i < count; i++, tgt++) {
+ if (tgt->active) {
+ next_idx = (i + 1) % count;
+ RETURN(i);
+ }
}
+ for (i = 0, tgt = lov->tgts; i < next_idx; i++, tgt++) {
+ if (tgt->active) {
+ next_idx = (i + 1) % count;
+ RETURN(i);
+ }
+ }
- return lov_off * ssize + stripe_off;
+ RETURN(-EIO);
}
-/* compute which stripe number "lov_off" will be written into */
-static int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off)
+static int lov_revalidate_md(struct obd_export *exp, struct obdo *src_oa,
+ struct lov_stripe_md *ea,
+ struct obd_trans_info *oti)
{
- unsigned long ssize = lsm->lsm_stripe_size;
- unsigned long swidth = ssize * lsm->lsm_stripe_count;
- unsigned long stripe_off;
+ struct obd_export *osc_exp;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lov_stripe_md *lsm = ea;
+ struct lov_stripe_md obj_md;
+ struct lov_stripe_md *obj_mdp = &obj_md;
+ struct lov_oinfo *loi;
+ struct obdo *tmp_oa;
+ int ost_idx, updates = 0, i;
+ ENTRY;
- stripe_off = do_div(lov_off, swidth);
+ tmp_oa = obdo_alloc();
+ if (tmp_oa == NULL)
+ RETURN(-ENOMEM);
- return stripe_off / ssize;
-}
+ loi = lsm->lsm_oinfo;
+ for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
+ int rc;
+ if (!obd_uuid_empty(&lov->tgts[loi->loi_ost_idx].uuid))
+ continue;
+ ost_idx = lov_revalidate_policy(lov, lsm);
+ if (ost_idx < 0) {
+ /* FIXME: punt for now. */
+ CERROR("lov_revalidate_policy failed; no active "
+ "OSCs?\n");
+ continue;
+ }
+
+ /* create a new object */
+ memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
+ /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
+ osc_exp = lov->tgts[ost_idx].ltd_exp;
+ rc = obd_create(osc_exp, tmp_oa, NULL, 0, &obj_mdp, oti);
+ if (rc) {
+ CERROR("error creating new subobj at idx %d; "
+ "rc = %d\n", ost_idx, rc);
+ continue;
+ }
+ if (oti->oti_objid)
+ oti->oti_objid[ost_idx] = tmp_oa->o_id;
+ loi->loi_id = tmp_oa->o_id;
+ loi->loi_gr = tmp_oa->o_gr;
+ loi->loi_ost_idx = ost_idx;
+ loi->loi_ost_gen = lov->tgts[ost_idx].ltd_gen;
+ CDEBUG(D_INODE, "replacing objid "LPX64" subobj "LPX64
+ " with idx %d gen %d.\n", lsm->lsm_object_id,
+ loi->loi_id, ost_idx, loi->loi_ost_gen);
+ updates = 1;
+ }
+
+ /* If we got an error revalidating an entry there's no need to
+ * cleanup up objects we allocated here because the bad entry
+ * still points to a deleted OST. */
+
+ obdo_free(tmp_oa);
+ RETURN(updates);
+}
/* FIXME: maybe we'll just make one node the authoritative attribute node, then
* we can send this 'punch' to just the authoritative node and the nodes
* that the punch will affect. */
-static int lov_punch(struct lustre_handle *conn, struct obdo *oa,
+static int lov_punch(struct obd_export *exp, struct obdo *oa,
struct lov_stripe_md *lsm,
- obd_off start, obd_off end)
+ obd_off start, obd_off end, struct obd_trans_info *oti)
{
- struct obdo tmp;
- struct obd_export *export = class_conn2export(conn);
+ struct lov_request_set *set;
struct lov_obd *lov;
- struct lov_oinfo *loi;
- int rc = 0, i;
+ struct list_head *pos;
+ struct lov_request *req;
+ int err = 0, rc = 0;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
+
+ if (!exp || !exp->exp_obd)
+ RETURN(-ENODEV);
+
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_punch_set(exp, oa, lsm, start, end, oti, &set);
+ if (rc)
+ RETURN(rc);
+
+ list_for_each (pos, &set->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ rc = obd_punch(lov->tgts[req->rq_idx].ltd_exp, req->rq_oa,
+ NULL, req->rq_extent.start,
+ req->rq_extent.end, NULL);
+ err = lov_update_punch_set(set, req, rc);
+ if (err) {
+ CERROR("error: punch objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n", set->set_oa->o_id,
+ req->rq_oa->o_id, req->rq_idx, rc);
+ if (!rc)
+ rc = err;
+ }
}
+ err = lov_fini_punch_set(set);
+ if (!rc)
+ rc = err;
+ RETURN(rc);
+}
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
+static int lov_sync(struct obd_export *exp, struct obdo *oa,
+ struct lov_stripe_md *lsm, obd_off start, obd_off end)
+{
+ struct lov_request_set *set;
+ struct lov_obd *lov;
+ struct list_head *pos;
+ struct lov_request *req;
+ int err = 0, rc = 0;
+ ENTRY;
+
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
- }
- if (!export || !export->exp_obd)
+ if (!exp->exp_obd)
RETURN(-ENODEV);
- lov = &export->exp_obd->u.lov;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- obd_off starti = lov_stripe_offset(lsm, start, i);
- obd_off endi = lov_stripe_offset(lsm, end, i);
- int err;
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_sync_set(exp, oa, lsm, start, end, &set);
+ if (rc)
+ RETURN(rc);
- if (starti == endi)
- continue;
- /* create data objects with "parent" OA */
- memcpy(&tmp, oa, sizeof(tmp));
- tmp.o_id = loi->loi_id;
+ list_for_each (pos, &set->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
- err = obd_punch(&lov->tgts[loi->loi_ost_idx].conn, &tmp, NULL,
- starti, endi);
+ rc = obd_sync(lov->tgts[req->rq_idx].ltd_exp, req->rq_oa,
+ NULL, req->rq_extent.start, req->rq_extent.end);
+ err = lov_update_common_set(set, req, rc);
if (err) {
- CERROR("Error punch objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n",
- oa->o_id, loi->loi_id, loi->loi_ost_idx, err);
+ CERROR("error: fsync objid "LPX64" subobj "LPX64
+ " on OST idx %d: rc = %d\n", set->set_oa->o_id,
+ req->rq_oa->o_id, req->rq_idx, rc);
if (!rc)
rc = err;
}
}
+ err = lov_fini_sync_set(set);
+ if (!rc)
+ rc = err;
RETURN(rc);
}
-static int lov_osc_brw_callback(struct io_cb_data *cbd, int err, int phase)
+static int lov_brw_check(struct lov_obd *lov, struct obdo *oa,
+ struct lov_stripe_md *lsm,
+ obd_count oa_bufs, struct brw_page *pga)
{
- int ret = 0;
+ int i, rc = 0;
ENTRY;
- if (phase == CB_PHASE_START)
- RETURN(0);
+ /* The caller just wants to know if there's a chance that this
+ * I/O can succeed */
+ for (i = 0; i < oa_bufs; i++) {
+ int stripe = lov_stripe_number(lsm, pga[i].disk_offset);
+ int ost = lsm->lsm_oinfo[stripe].loi_ost_idx;
+ obd_off start, end;
- if (phase == CB_PHASE_FINISH) {
- if (err)
- cbd->err = err;
- if (atomic_dec_and_test(&cbd->refcount))
- ret = cbd->cb(cbd->data, cbd->err, phase);
- RETURN(ret);
- }
+ if (!lov_stripe_intersects(lsm, i, pga[i].disk_offset,
+ pga[i].disk_offset + pga[i].count,
+ &start, &end))
+ continue;
- LBUG();
- return 0;
+ if (lov->tgts[ost].active == 0) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", ost);
+ RETURN(-EIO);
+ }
+ rc = obd_brw(OBD_BRW_CHECK, lov->tgts[ost].ltd_exp, oa,
+ NULL, 1, &pga[i], NULL);
+ if (rc)
+ break;
+ }
+ RETURN(rc);
}
-static inline int lov_brw(int cmd, struct lustre_handle *conn,
- struct lov_stripe_md *lsm, obd_count oa_bufs,
- struct brw_page *pga,
- brw_callback_t callback, struct io_cb_data *cbd)
+static int lov_brw(int cmd, struct obd_export *exp, struct obdo *src_oa,
+ struct lov_stripe_md *lsm, obd_count oa_bufs,
+ struct brw_page *pga, struct obd_trans_info *oti)
{
- int stripe_count = lsm->lsm_stripe_count;
- struct obd_export *export = class_conn2export(conn);
- struct lov_obd *lov;
- struct {
- int bufct;
- int index;
- int subcount;
- struct lov_stripe_md lsm;
- int ost_idx;
- } *stripeinfo, *si, *si_last;
- struct brw_page *ioarr;
- int rc, i;
- struct io_cb_data *our_cb;
- struct lov_oinfo *loi;
- int *where;
+ struct lov_request_set *set;
+ struct lov_request *req;
+ struct list_head *pos;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ int err, rc = 0;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
+
+ if (cmd == OBD_BRW_CHECK) {
+ rc = lov_brw_check(lov, src_oa, lsm, oa_bufs, pga);
+ RETURN(rc);
+ }
+
+ rc = lov_prep_brw_set(exp, src_oa, lsm, oa_bufs, pga, oti, &set);
+ if (rc)
+ RETURN(rc);
+
+ list_for_each (pos, &set->set_list) {
+ struct obd_export *sub_exp;
+ struct brw_page *sub_pga;
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ sub_exp = lov->tgts[req->rq_idx].ltd_exp;
+ sub_pga = set->set_pga + req->rq_pgaidx;
+ rc = obd_brw(cmd, sub_exp, req->rq_oa, req->rq_md,
+ req->rq_oabufs, sub_pga, oti);
+ if (rc)
+ break;
+ lov_update_common_set(set, req, rc);
}
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
+ err = lov_fini_brw_set(set);
+ if (!rc)
+ rc = err;
+ RETURN(rc);
+}
+
+static int lov_brw_interpret(struct ptlrpc_request_set *reqset, void *data,
+ int rc)
+{
+ struct lov_request_set *lovset = (struct lov_request_set *)data;
+ ENTRY;
+
+ if (rc) {
+ lovset->set_completes = 0;
+ lov_fini_brw_set(lovset);
+ } else {
+ rc = lov_fini_brw_set(lovset);
+ }
+
+ RETURN(rc);
+}
+
+static int lov_brw_async(int cmd, struct obd_export *exp, struct obdo *oa,
+ struct lov_stripe_md *lsm, obd_count oa_bufs,
+ struct brw_page *pga, struct ptlrpc_request_set *set,
+ struct obd_trans_info *oti)
+{
+ struct lov_request_set *lovset;
+ struct lov_request *req;
+ struct list_head *pos;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ int rc = 0;
+ ENTRY;
+
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
+
+ if (cmd == OBD_BRW_CHECK) {
+ rc = lov_brw_check(lov, oa, lsm, oa_bufs, pga);
+ RETURN(rc);
}
- lov = &export->exp_obd->u.lov;
+ rc = lov_prep_brw_set(exp, oa, lsm, oa_bufs, pga, oti, &lovset);
+ if (rc)
+ RETURN(rc);
- our_cb = ll_init_cb();
- if (!our_cb)
- RETURN(-ENOMEM);
+ list_for_each (pos, &lovset->set_list) {
+ struct obd_export *sub_exp;
+ struct brw_page *sub_pga;
+ req = list_entry(pos, struct lov_request, rq_link);
+
+ sub_exp = lov->tgts[req->rq_idx].ltd_exp;
+ sub_pga = lovset->set_pga + req->rq_pgaidx;
+ rc = obd_brw_async(cmd, sub_exp, req->rq_oa, req->rq_md,
+ req->rq_oabufs, sub_pga, set, oti);
+ if (rc)
+ GOTO(out, rc);
+ lov_update_common_set(lovset, req, rc);
+ }
+ LASSERT(rc == 0);
+ LASSERT(set->set_interpret == NULL);
+ set->set_interpret = (set_interpreter_func)lov_brw_interpret;
+ set->set_arg = (void *)lovset;
+
+ RETURN(rc);
+out:
+ lov_fini_brw_set(lovset);
+ RETURN(rc);
+}
+
+static int lov_ap_make_ready(void *data, int cmd)
+{
+ struct lov_async_page *lap = LAP_FROM_COOKIE(data);
+
+ return lap->lap_caller_ops->ap_make_ready(lap->lap_caller_data, cmd);
+}
+static int lov_ap_refresh_count(void *data, int cmd)
+{
+ struct lov_async_page *lap = LAP_FROM_COOKIE(data);
- OBD_ALLOC(stripeinfo, stripe_count * sizeof(*stripeinfo));
- if (!stripeinfo)
- GOTO(out_cbdata, rc = -ENOMEM);
+ return lap->lap_caller_ops->ap_refresh_count(lap->lap_caller_data,
+ cmd);
+}
+static void lov_ap_fill_obdo(void *data, int cmd, struct obdo *oa)
+{
+ struct lov_async_page *lap = LAP_FROM_COOKIE(data);
- OBD_ALLOC(where, sizeof(*where) * oa_bufs);
- if (!where)
- GOTO(out_sinfo, rc = -ENOMEM);
+ lap->lap_caller_ops->ap_fill_obdo(lap->lap_caller_data, cmd, oa);
+ /* XXX woah, shouldn't we be altering more here? size? */
+ oa->o_id = lap->lap_loi_id;
+}
- OBD_ALLOC(ioarr, sizeof(*ioarr) * oa_bufs);
- if (!ioarr)
- GOTO(out_where, rc = -ENOMEM);
+static void lov_ap_completion(void *data, int cmd, struct obdo *oa, int rc)
+{
+ struct lov_async_page *lap = LAP_FROM_COOKIE(data);
- /* This is the only race-free way I can think of to get the refcount
- * correct. -phil */
- atomic_set(&our_cb->refcount, 0);
- our_cb->cb = callback;
- our_cb->data = cbd;
+ /* in a raid1 regime this would down a count of many ios
+ * in flight, onl calling the caller_ops completion when all
+ * the raid1 ios are complete */
+ lap->lap_caller_ops->ap_completion(lap->lap_caller_data, cmd, oa, rc);
+}
- for (i = 0; i < oa_bufs; i++) {
- where[i] = lov_stripe_number(lsm, pga[i].off);
- if (stripeinfo[where[i]].bufct++ == 0)
- atomic_inc(&our_cb->refcount);
+static struct obd_async_page_ops lov_async_page_ops = {
+ .ap_make_ready = lov_ap_make_ready,
+ .ap_refresh_count = lov_ap_refresh_count,
+ .ap_fill_obdo = lov_ap_fill_obdo,
+ .ap_completion = lov_ap_completion,
+};
+
+static int lov_prep_async_page(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, struct page *page,
+ obd_off offset, struct obd_async_page_ops *ops,
+ void *data, void **res)
+{
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lov_async_page *lap;
+ int rc, stripe;
+ ENTRY;
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+ LASSERT(loi == NULL);
+
+ stripe = lov_stripe_number(lsm, offset);
+ loi = &lsm->lsm_oinfo[stripe];
+
+ if (obd_uuid_empty(&lov->tgts[loi->loi_ost_idx].uuid))
+ RETURN(-EIO);
+ if (lov->tgts[loi->loi_ost_idx].active == 0)
+ RETURN(-EIO);
+ if (lov->tgts[loi->loi_ost_idx].ltd_exp == NULL) {
+ CERROR("ltd_exp == NULL, but OST idx %d doesn't appear to be "
+ "deleted or inactive.\n", loi->loi_ost_idx);
+ RETURN(-EIO);
}
- for (i = 0, loi = lsm->lsm_oinfo, si_last = si = stripeinfo;
- i < stripe_count; i++, loi++, si_last = si, si++) {
- if (i > 0)
- si->index = si_last->index + si_last->bufct;
- si->lsm.lsm_object_id = loi->loi_id;
- si->ost_idx = loi->loi_ost_idx;
+ OBD_ALLOC(lap, sizeof(*lap));
+ if (lap == NULL)
+ RETURN(-ENOMEM);
+
+ lap->lap_magic = LAP_MAGIC;
+ lap->lap_caller_ops = ops;
+ lap->lap_caller_data = data;
+
+ /* FIXME handle multiple oscs after landing b_raid1 */
+ lap->lap_stripe = stripe;
+ switch (lsm->lsm_pattern) {
+ case LOV_PATTERN_RAID0:
+ lov_stripe_offset(lsm, offset, lap->lap_stripe,
+ &lap->lap_sub_offset);
+ break;
+ case LOV_PATTERN_CMOBD:
+ lap->lap_sub_offset = offset;
+ break;
+ default:
+ LBUG();
}
- for (i = 0; i < oa_bufs; i++) {
- int which = where[i];
- int shift;
+ /* so the callback doesn't need the lsm */
+ lap->lap_loi_id = loi->loi_id;
- shift = stripeinfo[which].index + stripeinfo[which].subcount;
- LASSERT(shift < oa_bufs);
- ioarr[shift] = pga[i];
- ioarr[shift].off = lov_stripe_offset(lsm, pga[i].off, which);
- stripeinfo[which].subcount++;
+ rc = obd_prep_async_page(lov->tgts[loi->loi_ost_idx].ltd_exp,
+ lsm, loi, page, lap->lap_sub_offset,
+ &lov_async_page_ops, lap,
+ &lap->lap_sub_cookie);
+ if (rc) {
+ OBD_FREE(lap, sizeof(*lap));
+ RETURN(rc);
}
+ CDEBUG(D_CACHE, "lap %p page %p cookie %p off "LPU64"\n", lap, page,
+ lap->lap_sub_cookie, offset);
+ *res = lap;
+ RETURN(0);
+}
+
+static int lov_queue_async_io(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, void *cookie,
+ int cmd, obd_off off, int count,
+ obd_flags brw_flags, obd_flags async_flags)
+{
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lov_async_page *lap;
+ int rc;
+
+ LASSERT(loi == NULL);
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ lap = LAP_FROM_COOKIE(cookie);
+
+ loi = &lsm->lsm_oinfo[lap->lap_stripe];
+
+ rc = obd_queue_async_io(lov->tgts[loi->loi_ost_idx].ltd_exp, lsm,
+ loi, lap->lap_sub_cookie, cmd, off, count,
+ brw_flags, async_flags);
+ RETURN(rc);
+}
+
+static int lov_set_async_flags(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, void *cookie,
+ obd_flags async_flags)
+{
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lov_async_page *lap;
+ int rc;
- for (i = 0, si = stripeinfo; i < stripe_count; i++, si++) {
- int shift = si->index;
+ LASSERT(loi == NULL);
- if (si->bufct) {
- LASSERT(shift < oa_bufs);
- /* XXX handle error returns here */
- obd_brw(cmd, &lov->tgts[si->ost_idx].conn,
- &si->lsm, si->bufct, &ioarr[shift],
- lov_osc_brw_callback, our_cb);
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ lap = LAP_FROM_COOKIE(cookie);
+
+ loi = &lsm->lsm_oinfo[lap->lap_stripe];
+
+ rc = obd_set_async_flags(lov->tgts[loi->loi_ost_idx].ltd_exp,
+ lsm, loi, lap->lap_sub_cookie, async_flags);
+ RETURN(rc);
+}
+
+static int lov_queue_group_io(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi,
+ struct obd_io_group *oig, void *cookie,
+ int cmd, obd_off off, int count,
+ obd_flags brw_flags, obd_flags async_flags)
+{
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lov_async_page *lap;
+ int rc;
+
+ LASSERT(loi == NULL);
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ lap = LAP_FROM_COOKIE(cookie);
+
+ loi = &lsm->lsm_oinfo[lap->lap_stripe];
+
+ rc = obd_queue_group_io(lov->tgts[loi->loi_ost_idx].ltd_exp, lsm, loi,
+ oig, lap->lap_sub_cookie, cmd, off, count,
+ brw_flags, async_flags);
+ RETURN(rc);
+}
+
+/* this isn't exactly optimal. we may have queued sync io in oscs on
+ * all stripes, but we don't record that fact at queue time. so we
+ * trigger sync io on all stripes. */
+static int lov_trigger_group_io(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi,
+ struct obd_io_group *oig)
+{
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ int rc = 0, i, err;
+
+ LASSERT(loi == NULL);
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ loi = lsm->lsm_oinfo;
+ for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
+ if (lov->tgts[loi->loi_ost_idx].active == 0) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
+ continue;
}
- }
- rc = callback(cbd, 0, CB_PHASE_START);
+ err = obd_trigger_group_io(lov->tgts[loi->loi_ost_idx].ltd_exp,
+ lsm, loi, oig);
+ if (rc == 0 && err != 0)
+ rc = err;
+ };
+ RETURN(rc);
+}
+
+static int lov_teardown_async_page(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ struct lov_oinfo *loi, void *cookie)
+{
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lov_async_page *lap;
+ int rc;
+
+ LASSERT(loi == NULL);
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ lap = LAP_FROM_COOKIE(cookie);
- OBD_FREE(ioarr, sizeof(*ioarr) * oa_bufs);
- out_where:
- OBD_FREE(where, sizeof(*where) * oa_bufs);
- out_sinfo:
- OBD_FREE(stripeinfo, stripe_count * sizeof(*stripeinfo));
- out_cbdata:
- OBD_FREE(our_cb, sizeof(*our_cb));
+ loi = &lsm->lsm_oinfo[lap->lap_stripe];
+
+ rc = obd_teardown_async_page(lov->tgts[loi->loi_ost_idx].ltd_exp,
+ lsm, loi, lap->lap_sub_cookie);
+ if (rc) {
+ CERROR("unable to teardown sub cookie %p: %d\n",
+ lap->lap_sub_cookie, rc);
+ RETURN(rc);
+ }
+ OBD_FREE(lap, sizeof(*lap));
RETURN(rc);
}
-static int lov_enqueue(struct lustre_handle *conn, struct lov_stripe_md *lsm,
- struct lustre_handle *parent_lock,
- __u32 type, void *cookie, int cookielen, __u32 mode,
- int *flags, void *cb, void *data, int datalen,
- struct lustre_handle *lockhs)
+static int lov_enqueue(struct obd_export *exp, struct lov_stripe_md *lsm,
+ __u32 type, ldlm_policy_data_t *policy, __u32 mode,
+ int *flags, void *bl_cb, void *cp_cb, void *gl_cb,
+ void *data,__u32 lvb_len, void *lvb_swabber,
+ struct lustre_handle *lockh)
{
- struct obd_export *export = class_conn2export(conn);
+ struct lov_request_set *set;
+ struct lov_request *req;
+ struct list_head *pos;
+ struct lustre_handle *lov_lockhp;
struct lov_obd *lov;
- struct lov_oinfo *loi;
- int rc = 0, i;
+ ldlm_error_t rc;
+ int save_flags = *flags;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
+
+ /* we should never be asked to replay a lock this way. */
+ LASSERT((*flags & LDLM_FL_REPLAY) == 0);
+
+ if (!exp || !exp->exp_obd)
+ RETURN(-ENODEV);
+
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_enqueue_set(exp, lsm, policy, mode, lockh, &set);
+ if (rc)
+ RETURN(rc);
+
+ list_for_each (pos, &set->set_list) {
+ ldlm_policy_data_t sub_policy;
+ req = list_entry(pos, struct lov_request, rq_link);
+ lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
+ LASSERT(lov_lockhp);
+
+ *flags = save_flags;
+ sub_policy.l_extent.start = req->rq_extent.start;
+ sub_policy.l_extent.end = req->rq_extent.end;
+
+ rc = obd_enqueue(lov->tgts[req->rq_idx].ltd_exp, req->rq_md,
+ type, &sub_policy, mode, flags, bl_cb,
+ cp_cb, gl_cb, data, lvb_len, lvb_swabber,
+ lov_lockhp);
+ rc = lov_update_enqueue_set(set, req, rc, save_flags);
+ if (rc != ELDLM_OK)
+ break;
}
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
+ lov_fini_enqueue_set(set, mode);
+ RETURN(rc);
+}
+
+static int lov_match(struct obd_export *exp, struct lov_stripe_md *lsm,
+ __u32 type, ldlm_policy_data_t *policy, __u32 mode,
+ int *flags, void *data, struct lustre_handle *lockh)
+{
+ struct lov_request_set *set;
+ struct lov_request *req;
+ struct list_head *pos;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lustre_handle *lov_lockhp;
+ int lov_flags, rc = 0;
+ ENTRY;
+
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
- }
- if (!export || !export->exp_obd)
+ if (!exp || !exp->exp_obd)
RETURN(-ENODEV);
- lov = &export->exp_obd->u.lov;
- for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
- struct ldlm_extent *extent = (struct ldlm_extent *)cookie;
- struct ldlm_extent sub_ext;
- struct lov_stripe_md submd;
-
- sub_ext.start = lov_stripe_offset(lsm, extent->start, i);
- sub_ext.end = lov_stripe_offset(lsm, extent->end, i);
- if (sub_ext.start == sub_ext.end)
- continue;
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_match_set(exp, lsm, policy, mode, lockh, &set);
+ if (rc)
+ RETURN(rc);
- submd.lsm_object_id = loi->loi_id;
- /* XXX submd lsm_mds_easize should be that from the subobj,
- * and the subobj should get it opaquely from the LOV.
- */
- submd.lsm_mds_easize = lov_mds_md_size(lsm->lsm_ost_count);
- submd.lsm_stripe_count = 0;
- /* XXX submd is not fully initialized here */
- rc = obd_enqueue(&(lov->tgts[loi->loi_ost_idx].conn), &submd,
- parent_lock, type, &sub_ext, sizeof(sub_ext),
- mode, flags, cb, data, datalen, &(lockhs[i]));
- // XXX add a lock debug statement here
- if (rc)
- CERROR("Error enqueue objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
- loi->loi_id, loi->loi_ost_idx, rc);
+ list_for_each (pos, &set->set_list) {
+ ldlm_policy_data_t sub_policy;
+ req = list_entry(pos, struct lov_request, rq_link);
+ lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
+ LASSERT(lov_lockhp);
+
+ sub_policy.l_extent.start = req->rq_extent.start;
+ sub_policy.l_extent.end = req->rq_extent.end;
+ lov_flags = *flags;
+
+ rc = obd_match(lov->tgts[req->rq_idx].ltd_exp, req->rq_md,
+ type, &sub_policy, mode, &lov_flags, data,
+ lov_lockhp);
+ rc = lov_update_match_set(set, req, rc);
+ if (rc != 1)
+ break;
}
+ lov_fini_match_set(set, mode, *flags);
RETURN(rc);
}
-static int lov_cancel(struct lustre_handle *conn, struct lov_stripe_md *lsm,
- __u32 mode, struct lustre_handle *lockhs)
+static int lov_change_cbdata(struct obd_export *exp,
+ struct lov_stripe_md *lsm, ldlm_iterator_t it,
+ void *data)
{
- struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
struct lov_oinfo *loi;
int rc = 0, i;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea\n");
+ if (lsm_bad_magic(lsm))
RETURN(-EINVAL);
- }
- if (lsm->lsm_magic != LOV_MAGIC) {
- CERROR("LOV striping magic bad %#lx != %#lx\n",
- lsm->lsm_magic, LOV_MAGIC);
- RETURN(-EINVAL);
- }
-
- if (!export || !export->exp_obd)
+ if (!exp || !exp->exp_obd)
RETURN(-ENODEV);
- lov = &export->exp_obd->u.lov;
+ LASSERT(lsm->lsm_object_gr > 0);
+
+ lov = &exp->exp_obd->u.lov;
for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
struct lov_stripe_md submd;
-
- if (lockhs[i].addr == 0)
+ if (lov->tgts[loi->loi_ost_idx].active == 0) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
continue;
+ }
submd.lsm_object_id = loi->loi_id;
- submd.lsm_mds_easize = lov_mds_md_size(lsm->lsm_ost_count);
+ submd.lsm_object_gr = lsm->lsm_object_gr;
submd.lsm_stripe_count = 0;
- rc = obd_cancel(&lov->tgts[loi->loi_ost_idx].conn, &submd,
- mode, &lockhs[i]);
- if (rc)
- CERROR("Error cancel objid "LPX64" subobj "LPX64
- " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
- loi->loi_id, loi->loi_ost_idx, rc);
+ rc = obd_change_cbdata(lov->tgts[loi->loi_ost_idx].ltd_exp,
+ &submd, it, data);
}
RETURN(rc);
}
-static int lov_cancel_unused(struct lustre_handle *conn,
- struct lov_stripe_md *lsm, int local_only)
+static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
+ __u32 mode, struct lustre_handle *lockh)
+{
+ struct lov_request_set *set;
+ struct lov_request *req;
+ struct list_head *pos;
+ struct lov_obd *lov = &exp->exp_obd->u.lov;
+ struct lustre_handle *lov_lockhp;
+ int err = 0, rc = 0;
+ ENTRY;
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ if (!exp || !exp->exp_obd)
+ RETURN(-ENODEV);
+
+ LASSERT(lsm->lsm_object_gr > 0);
+
+ LASSERT(lockh);
+ lov = &exp->exp_obd->u.lov;
+ rc = lov_prep_cancel_set(exp, lsm, mode, lockh, &set);
+ if (rc)
+ RETURN(rc);
+
+ list_for_each (pos, &set->set_list) {
+ req = list_entry(pos, struct lov_request, rq_link);
+ lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
+
+ rc = obd_cancel(lov->tgts[req->rq_idx].ltd_exp, req->rq_md,
+ mode, lov_lockhp);
+ rc = lov_update_common_set(set, req, rc);
+ if (rc) {
+ CERROR("error: cancel objid "LPX64" subobj "
+ LPX64" on OST idx %d: rc = %d\n",
+ lsm->lsm_object_id,
+ req->rq_md->lsm_object_id, req->rq_idx, rc);
+ err = rc;
+ }
+
+ }
+ lov_fini_cancel_set(set);
+ RETURN(err);
+}
+
+static int lov_cancel_unused(struct obd_export *exp,
+ struct lov_stripe_md *lsm,
+ int flags, void *opaque)
{
- struct obd_export *export = class_conn2export(conn);
struct lov_obd *lov;
struct lov_oinfo *loi;
int rc = 0, i;
ENTRY;
- if (!lsm) {
- CERROR("LOV requires striping ea for lock cancellation\n");
- RETURN(-EINVAL);
+ lov = &exp->exp_obd->u.lov;
+ if (lsm == NULL) {
+ for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+ int err = obd_cancel_unused(lov->tgts[i].ltd_exp,
+ NULL, flags, opaque);
+ if (!rc)
+ rc = err;
+ }
+ RETURN(rc);
}
- if (!export || !export->exp_obd)
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
+
+ if (!exp || !exp->exp_obd)
RETURN(-ENODEV);
- lov = &export->exp_obd->u.lov;
+ LASSERT(lsm->lsm_object_gr > 0);
+
for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++,loi++) {
struct lov_stripe_md submd;
+ int err;
+
+ if (lov->tgts[loi->loi_ost_idx].active == 0)
+ CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
submd.lsm_object_id = loi->loi_id;
- submd.lsm_mds_easize = lov_mds_md_size(lsm->lsm_ost_count);
+ submd.lsm_object_gr = lsm->lsm_object_gr;
submd.lsm_stripe_count = 0;
- rc = obd_cancel_unused(&lov->tgts[loi->loi_ost_idx].conn,
- &submd, local_only);
- if (rc)
- CERROR("Error cancel unused objid "LPX64" subobj "LPX64
+ err = obd_cancel_unused(lov->tgts[loi->loi_ost_idx].ltd_exp,
+ &submd, flags, opaque);
+ if (err && lov->tgts[loi->loi_ost_idx].active) {
+ CERROR("error: cancel unused objid "LPX64" subobj "LPX64
" on OST idx %d: rc = %d\n", lsm->lsm_object_id,
- loi->loi_id, loi->loi_ost_idx, rc);
+ loi->loi_id, loi->loi_ost_idx, err);
+ if (!rc)
+ rc = err;
+ }
}
RETURN(rc);
}
-static int lov_statfs(struct lustre_handle *conn, struct obd_statfs *osfs)
+#define LOV_U64_MAX ((__u64)~0ULL)
+#define LOV_SUM_MAX(tot, add) \
+ do { \
+ if ((tot) + (add) < (tot)) \
+ (tot) = LOV_U64_MAX; \
+ else \
+ (tot) += (add); \
+ } while(0)
+
+static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs,
+ unsigned long max_age)
{
- struct obd_export *export = class_conn2export(conn);
- struct lov_obd *lov;
+ struct lov_obd *lov = &obd->u.lov;
struct obd_statfs lov_sfs;
int set = 0;
int rc = 0;
int i;
ENTRY;
- if (!export || !export->exp_obd)
- RETURN(-ENODEV);
-
- lov = &export->exp_obd->u.lov;
/* We only get block data from the OBD */
for (i = 0; i < lov->desc.ld_tgt_count; i++) {
int err;
+ if (!lov->tgts[i].active) {
+ CDEBUG(D_HA, "lov idx %d inactive\n", i);
+ continue;
+ }
- err = obd_statfs(&lov->tgts[i].conn, &lov_sfs);
+ err = obd_statfs(class_exp2obd(lov->tgts[i].ltd_exp), &lov_sfs,
+ max_age);
if (err) {
- CERROR("Error statfs OSC %s idx %d: err = %d\n",
- lov->tgts[i].uuid, i, err);
- if (!rc)
+ if (lov->tgts[i].active && !rc)
rc = err;
- continue; /* XXX or break? - probably OK to continue */
+ continue;
}
+
if (!set) {
memcpy(osfs, &lov_sfs, sizeof(lov_sfs));
set = 1;
* if one of the OBDs has no more objects left)
* - could be sum if we stripe whole objects
* - could be average, just to give a nice number
- * - we just pick first OST and hope it is enough
- sfs->f_ffree += lov_sfs.f_ffree;
+ *
+ * To give a "reasonable" (if not wholly accurate)
+ * number, we divide the total number of free objects
+ * by expected stripe count (watch out for overflow).
*/
+ LOV_SUM_MAX(osfs->os_files, lov_sfs.os_files);
+ LOV_SUM_MAX(osfs->os_ffree, lov_sfs.os_ffree);
}
}
+
+ if (set) {
+ __u32 expected_stripes = lov->desc.ld_default_stripe_count ?
+ lov->desc.ld_default_stripe_count :
+ lov->desc.ld_active_tgt_count;
+
+ if (osfs->os_files != LOV_U64_MAX)
+ do_div(osfs->os_files, expected_stripes);
+ if (osfs->os_ffree != LOV_U64_MAX)
+ do_div(osfs->os_ffree, expected_stripes);
+ } else if (!rc)
+ rc = -EIO;
+
RETURN(rc);
}
-static int lov_iocontrol(long cmd, struct lustre_handle *conn, int len,
+static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
void *karg, void *uarg)
{
- struct obd_device *obddev = class_conn2obd(conn);
- struct obd_ioctl_data *data = karg;
+ struct obd_device *obddev = class_exp2obd(exp);
struct lov_obd *lov = &obddev->u.lov;
- int rc, i;
+ int i, rc, count = lov->desc.ld_tgt_count;
+ struct obd_uuid *uuidp;
ENTRY;
switch (cmd) {
- case IOC_LOV_SET_OSC_ACTIVE:
- rc = lov_set_osc_active(lov,data->ioc_inlbuf1,data->ioc_offset);
+ case OBD_IOC_LOV_GET_CONFIG: {
+ struct obd_ioctl_data *data = karg;
+ struct lov_tgt_desc *tgtdesc;
+ struct lov_desc *desc;
+ char *buf = NULL;
+ __u32 *genp;
+
+ buf = NULL;
+ len = 0;
+ if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
+ RETURN(-EINVAL);
+
+ data = (struct obd_ioctl_data *)buf;
+
+ if (sizeof(*desc) > data->ioc_inllen1) {
+ obd_ioctl_freedata(buf, len);
+ RETURN(-EINVAL);
+ }
+
+ if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) {
+ obd_ioctl_freedata(buf, len);
+ RETURN(-EINVAL);
+ }
+
+ if (sizeof(__u32) * count > data->ioc_inllen3) {
+ obd_ioctl_freedata(buf, len);
+ RETURN(-EINVAL);
+ }
+
+ desc = (struct lov_desc *)data->ioc_inlbuf1;
+ memcpy(desc, &(lov->desc), sizeof(*desc));
+
+ uuidp = (struct obd_uuid *)data->ioc_inlbuf2;
+ genp = (__u32 *)data->ioc_inlbuf3;
+ tgtdesc = lov->tgts;
+ /* the uuid will be empty for deleted OSTs */
+ for (i = 0; i < count; i++, uuidp++, genp++, tgtdesc++) {
+ obd_str2uuid(uuidp, (char *)tgtdesc->uuid.uuid);
+ *genp = tgtdesc->ltd_gen;
+ }
+
+ rc = copy_to_user((void *)uarg, buf, len);
+ if (rc)
+ rc = -EFAULT;
+ obd_ioctl_freedata(buf, len);
break;
- default:
- rc = -ENOTTY;
+ }
+ case LL_IOC_LOV_SETSTRIPE:
+ rc = lov_setstripe(exp, karg, uarg);
+ break;
+ case LL_IOC_LOV_GETSTRIPE:
+ rc = lov_getstripe(exp, karg, uarg);
+ break;
+ case LL_IOC_LOV_SETEA:
+ rc = lov_setea(exp, karg, uarg);
+ break;
+ default: {
+ int set = 0;
+ if (count == 0)
+ RETURN(-ENOTTY);
+ rc = 0;
+ for (i = 0; i < count; i++) {
+ int err;
+
+ /* OST was deleted */
+ if (obd_uuid_empty(&lov->tgts[i].uuid))
+ continue;
+
+ err = obd_iocontrol(cmd, lov->tgts[i].ltd_exp,
+ len, karg, uarg);
+ if (err) {
+ if (lov->tgts[i].active) {
+ CERROR("error: iocontrol OSC %s on OST "
+ "idx %d cmd %x: err = %d\n",
+ lov->tgts[i].uuid.uuid, i,
+ cmd, err);
+ if (!rc)
+ rc = err;
+ }
+ } else
+ set = 1;
+ }
+ if (!set && !rc)
+ rc = -EIO;
+ }
+ }
+
+ RETURN(rc);
+}
+
+static int lov_get_info(struct obd_export *exp, __u32 keylen,
+ void *key, __u32 *vallen, void *val)
+{
+ struct obd_device *obddev = class_exp2obd(exp);
+ struct lov_obd *lov = &obddev->u.lov;
+ int i;
+ ENTRY;
+
+ if (!vallen || !val)
+ RETURN(-EFAULT);
+
+ if (keylen > strlen("lock_to_stripe") &&
+ strcmp(key, "lock_to_stripe") == 0) {
+ struct {
+ char name[16];
+ struct ldlm_lock *lock;
+ struct lov_stripe_md *lsm;
+ } *data = key;
+ struct lov_oinfo *loi;
+ struct ldlm_res_id *res_id = &data->lock->l_resource->lr_name;
+ __u32 *stripe = val;
+
+ if (*vallen < sizeof(*stripe))
+ RETURN(-EFAULT);
+ *vallen = sizeof(*stripe);
+
+ /* XXX This is another one of those bits that will need to
+ * change if we ever actually support nested LOVs. It uses
+ * the lock's export to find out which stripe it is. */
+ /* XXX - it's assumed all the locks for deleted OSTs have
+ * been cancelled. Also, the export for deleted OSTs will
+ * be NULL and won't match the lock's export. */
+ for (i = 0, loi = data->lsm->lsm_oinfo;
+ i < data->lsm->lsm_stripe_count;
+ i++, loi++) {
+ if (lov->tgts[loi->loi_ost_idx].ltd_exp ==
+ data->lock->l_conn_export &&
+ loi->loi_id == res_id->name[0] &&
+ loi->loi_gr == res_id->name[2]) {
+ *stripe = i;
+ RETURN(0);
+ }
+ }
+ LDLM_ERROR(data->lock, "lock on inode without such object\n");
+ dump_lsm(D_ERROR, data->lsm);
+ RETURN(-ENXIO);
+ } else if (keylen >= strlen("size_to_stripe") &&
+ strcmp(key, "size_to_stripe") == 0) {
+ struct {
+ int stripe_number;
+ __u64 size;
+ struct lov_stripe_md *lsm;
+ } *data = val;
+
+ if (*vallen < sizeof(*data))
+ RETURN(-EFAULT);
+
+ data->size = lov_size_to_stripe(data->lsm, data->size,
+ data->stripe_number);
+ RETURN(0);
+ } else if (keylen >= strlen("last_id") && strcmp(key, "last_id") == 0) {
+ __u32 size = sizeof(obd_id);
+ obd_id *ids = val;
+ int rc = 0;
+
for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- int err = obd_iocontrol(cmd, &lov->tgts[i].conn,
- len, data, NULL);
- if (err && !rc)
+ if (!lov->tgts[i].active)
+ continue;
+ rc = obd_get_info(lov->tgts[i].ltd_exp,
+ keylen, key, &size, &(ids[i]));
+ if (rc != 0)
+ RETURN(rc);
+ }
+ RETURN(0);
+ } else if (keylen >= strlen("lovdesc") && strcmp(key, "lovdesc") == 0) {
+ struct lov_desc *desc_ret = val;
+ *desc_ret = lov->desc;
+
+ RETURN(0);
+ }
+
+ RETURN(-EINVAL);
+}
+
+static int lov_set_info(struct obd_export *exp, obd_count keylen,
+ void *key, obd_count vallen, void *val)
+{
+ struct obd_device *obddev = class_exp2obd(exp);
+ struct lov_obd *lov = &obddev->u.lov;
+ int i, rc = 0, err;
+ ENTRY;
+
+#define KEY_IS(str) \
+ (keylen == strlen(str) && memcmp(key, str, keylen) == 0)
+
+ if (KEY_IS("async")) {
+ struct lov_desc *desc = &lov->desc;
+ struct lov_tgt_desc *tgts = lov->tgts;
+
+ if (vallen != sizeof(int))
+ RETURN(-EINVAL);
+ lov->async = *((int*) val);
+
+ for (i = 0; i < desc->ld_tgt_count; i++, tgts++) {
+ struct obd_uuid *tgt_uuid = &tgts->uuid;
+ struct obd_device *tgt_obd;
+
+ tgt_obd = class_find_client_obd(tgt_uuid,
+ LUSTRE_OSC_NAME,
+ &obddev->obd_uuid);
+ if (!tgt_obd) {
+ CERROR("Target %s not attached\n",
+ tgt_uuid->uuid);
+ if (!rc)
+ rc = -EINVAL;
+ continue;
+ }
+
+ err = obd_set_info(tgt_obd->obd_self_export,
+ keylen, key, vallen, val);
+ if (err) {
+ CERROR("Failed to set async on target %s\n",
+ tgt_obd->obd_name);
+ if (!rc)
+ rc = err;
+ }
+ }
+ RETURN(rc);
+ }
+
+ if (KEY_IS("mds_conn")) {
+ if (vallen != sizeof(__u32))
+ RETURN(-EINVAL);
+ } else if (KEY_IS("unlinked") || KEY_IS("unrecovery")) {
+ if (vallen != 0)
+ RETURN(-EINVAL);
+ } else if (KEY_IS("sec")) {
+ struct lov_tgt_desc *tgt;
+ struct obd_export *exp;
+ int rc = 0, err, i;
+
+ spin_lock(&lov->lov_lock);
+ for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count;
+ i++, tgt++) {
+ exp = tgt->ltd_exp;
+ /* during setup time the connections to osc might
+ * haven't been established.
+ */
+ if (exp == NULL) {
+ struct obd_device *tgt_obd;
+
+ tgt_obd = class_find_client_obd(&tgt->uuid,
+ LUSTRE_OSC_NAME,
+ &obddev->obd_uuid);
+ if (!tgt_obd) {
+ CERROR("can't set security flavor, "
+ "device %s not attached?\n",
+ tgt->uuid.uuid);
+ rc = -EINVAL;
+ continue;
+ }
+ exp = tgt_obd->obd_self_export;
+ }
+
+ err = obd_set_info(exp, keylen, key, vallen, val);
+ if (!rc)
rc = err;
}
+ spin_unlock(&lov->lov_lock);
+
+ RETURN(rc);
+ } else if (KEY_IS("flush_cred")) {
+ struct lov_tgt_desc *tgt;
+ int rc = 0, i;
+
+ for (i = 0, tgt = lov->tgts; i < lov->desc.ld_tgt_count;
+ i++, tgt++) {
+ if (!tgt->ltd_exp)
+ continue;
+ rc = obd_set_info(tgt->ltd_exp,
+ keylen, key, vallen, val);
+ if (rc)
+ RETURN(rc);
+ }
+
+ RETURN(0);
+ } else {
+ RETURN(-EINVAL);
}
+ for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+ if (val && !obd_uuid_equals(val, &lov->tgts[i].uuid))
+ continue;
+
+ if (!val && !lov->tgts[i].active)
+ continue;
+
+ err = obd_set_info(lov->tgts[i].ltd_exp,
+ keylen, key, vallen, val);
+ if (!rc)
+ rc = err;
+ }
RETURN(rc);
+#undef KEY_IS
}
-struct obd_ops lov_obd_ops = {
- o_setup: lov_setup,
- o_connect: lov_connect,
- o_disconnect: lov_disconnect,
- o_create: lov_create,
- o_destroy: lov_destroy,
- o_getattr: lov_getattr,
- o_setattr: lov_setattr,
- o_statfs: lov_statfs,
- o_open: lov_open,
- o_close: lov_close,
- o_brw: lov_brw,
- o_punch: lov_punch,
- o_enqueue: lov_enqueue,
- o_cancel: lov_cancel,
- o_cancel_unused: lov_cancel_unused,
- o_iocontrol: lov_iocontrol
+#if 0
+struct lov_multi_wait {
+ struct ldlm_lock *lock;
+ wait_queue_t wait;
+ int completed;
+ int generation;
};
+int lov_complete_many(struct obd_export *exp, struct lov_stripe_md *lsm,
+ struct lustre_handle *lockh)
+{
+ struct lov_lock_handles *lov_lockh = NULL;
+ struct lustre_handle *lov_lockhp;
+ struct lov_obd *lov;
+ struct lov_oinfo *loi;
+ struct lov_multi_wait *queues;
+ int rc = 0, i;
+ ENTRY;
+
+ if (lsm_bad_magic(lsm))
+ RETURN(-EINVAL);
-#define LOV_VERSION "v0.1"
+ if (!exp || !exp->exp_obd)
+ RETURN(-ENODEV);
+
+ LASSERT(lockh != NULL);
+ if (lsm->lsm_stripe_count > 1) {
+ lov_lockh = lov_handle2llh(lockh);
+ if (lov_lockh == NULL) {
+ CERROR("LOV: invalid lov lock handle %p\n", lockh);
+ RETURN(-EINVAL);
+ }
-static int __init lov_init(void)
+ lov_lockhp = lov_lockh->llh_handles;
+ } else {
+ lov_lockhp = lockh;
+ }
+
+ OBD_ALLOC(queues, lsm->lsm_stripe_count * sizeof(*queues));
+ if (queues == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ lov = &exp->exp_obd->u.lov;
+ for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
+ i++, loi++, lov_lockhp++) {
+ struct ldlm_lock *lock;
+ struct obd_device *obd;
+ unsigned long irqflags;
+
+ lock = ldlm_handle2lock(lov_lockhp);
+ if (lock == NULL) {
+ CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n",
+ loi->loi_ost_idx, loi->loi_id);
+ queues[i].completed = 1;
+ continue;
+ }
+
+ queues[i].lock = lock;
+ init_waitqueue_entry(&(queues[i].wait), current);
+ add_wait_queue(lock->l_waitq, &(queues[i].wait));
+
+ obd = class_exp2obd(lock->l_conn_export);
+ if (obd != NULL)
+ imp = obd->u.cli.cl_import;
+ if (imp != NULL) {
+ spin_lock_irqsave(&imp->imp_lock, irqflags);
+ queues[i].generation = imp->imp_generation;
+ spin_unlock_irqrestore(&imp->imp_lock, irqflags);
+ }
+ }
+
+ lwi = LWI_TIMEOUT_INTR(obd_timeout * HZ, ldlm_expired_completion_wait,
+ interrupted_completion_wait, &lwd);
+ rc = l_wait_event_added(check_multi_complete(queues, lsm), &lwi);
+
+ for (i = 0; i < lsm->lsm_stripe_count; i++)
+ remove_wait_queue(lock->l_waitq, &(queues[i].wait));
+
+ if (rc == -EINTR || rc == -ETIMEDOUT) {
+
+
+ }
+
+ out:
+ if (lov_lockh != NULL)
+ lov_llh_put(lov_lockh);
+ RETURN(rc);
+}
+#endif
+
+struct obd_ops lov_obd_ops = {
+ .o_owner = THIS_MODULE,
+ .o_attach = lov_attach,
+ .o_detach = lov_detach,
+ .o_setup = lov_setup,
+ .o_cleanup = lov_cleanup,
+ .o_process_config = lov_process_config,
+ .o_connect = lov_connect,
+ .o_disconnect = lov_disconnect,
+ .o_statfs = lov_statfs,
+ .o_packmd = lov_packmd,
+ .o_unpackmd = lov_unpackmd,
+ .o_revalidate_md = lov_revalidate_md,
+ .o_create = lov_create,
+ .o_destroy = lov_destroy,
+ .o_getattr = lov_getattr,
+ .o_getattr_async = lov_getattr_async,
+ .o_setattr = lov_setattr,
+ .o_brw = lov_brw,
+ .o_brw_async = lov_brw_async,
+ .o_prep_async_page = lov_prep_async_page,
+ .o_queue_async_io = lov_queue_async_io,
+ .o_set_async_flags = lov_set_async_flags,
+ .o_queue_group_io = lov_queue_group_io,
+ .o_trigger_group_io = lov_trigger_group_io,
+ .o_teardown_async_page = lov_teardown_async_page,
+ .o_adjust_kms = lov_adjust_kms,
+ .o_punch = lov_punch,
+ .o_sync = lov_sync,
+ .o_enqueue = lov_enqueue,
+ .o_match = lov_match,
+ .o_change_cbdata = lov_change_cbdata,
+ .o_cancel = lov_cancel,
+ .o_cancel_unused = lov_cancel_unused,
+ .o_iocontrol = lov_iocontrol,
+ .o_get_info = lov_get_info,
+ .o_set_info = lov_set_info,
+ .o_llog_init = lov_llog_init,
+ .o_llog_finish = lov_llog_finish,
+ .o_notify = lov_notify,
+};
+
+int __init lov_init(void)
{
- printk(KERN_INFO "Lustre Logical Object Volume driver " LOV_VERSION
- ", info@clusterfs.com\n");
- return class_register_type(&lov_obd_ops, OBD_LOV_DEVICENAME);
+ struct lprocfs_static_vars lvars;
+ int rc;
+ ENTRY;
+
+ lprocfs_init_vars(lov, &lvars);
+ rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars,
+ OBD_LOV_DEVICENAME);
+ RETURN(rc);
}
-static void __exit lov_exit(void)
+#ifdef __KERNEL__
+static void /*__exit*/ lov_exit(void)
{
class_unregister_type(OBD_LOV_DEVICENAME);
}
MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver v0.1");
+MODULE_DESCRIPTION("Lustre Logical Object Volume OBD driver");
MODULE_LICENSE("GPL");
module_init(lov_init);
module_exit(lov_exit);
+#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff