-/* -*- 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.
+ *
+ * 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.
*
- * linux/mdt/mdt_recovery.c
- * Lustre Metadata Target (mdt) recovery-related methods
+ * 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).
*
- * Copyright (C) 2002-2006 Cluster File Systems, Inc.
- * Author: Huang Hua <huanghua@clusterfs.com>
- * Author: Pershin Mike <tappro@clusterfs.com>
+ * 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
*
- * This file is part of the Lustre file system, http://www.lustre.org
- * Lustre is a trademark of Cluster File Systems, Inc.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2014, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*
- * 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.
+ * lustre/mdt/mdt_recovery.c
*
- * 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.
+ * Lustre Metadata Target (mdt) recovery-related methods
*
- * 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.
+ * Author: Huang Hua <huanghua@clusterfs.com>
+ * Author: Pershin Mike <tappro@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
+
#define DEBUG_SUBSYSTEM S_MDS
#include "mdt_internal.h"
-static int mdt_server_data_update(const struct lu_env *env,
- struct mdt_device *mdt);
-
struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len)
{
struct lu_buf *buf;
return buf;
}
-int mdt_record_read(const struct lu_env *env,
- struct dt_object *dt, struct lu_buf *buf, loff_t *pos)
-{
- int rc;
-
- LASSERTF(dt != NULL, "dt is NULL when we want to read record\n");
-
- rc = dt->do_body_ops->dbo_read(env, dt, buf, pos, BYPASS_CAPA);
-
- if (rc == buf->lb_len)
- rc = 0;
- else if (rc >= 0)
- rc = -EFAULT;
- return rc;
-}
-
-int mdt_record_write(const struct lu_env *env,
- struct dt_object *dt, const struct lu_buf *buf,
- loff_t *pos, struct thandle *th)
-{
- int rc;
-
- LASSERTF(dt != NULL, "dt is NULL when we want to write record\n");
- LASSERT(th != NULL);
- rc = dt->do_body_ops->dbo_write(env, dt, buf, pos, th, BYPASS_CAPA);
- if (rc == buf->lb_len)
- rc = 0;
- else if (rc >= 0)
- rc = -EFAULT;
- return rc;
-}
-/* only one record write */
-
-enum {
- MDT_TXN_LAST_RCVD_WRITE_CREDITS = 3
-};
-
-struct thandle* mdt_trans_start(const struct lu_env *env,
- struct mdt_device *mdt, int credits)
-{
- struct mdt_thread_info *mti;
- struct txn_param *p;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- p = &mti->mti_txn_param;
- txn_param_init(p, credits);
-
- /* export can require sync operations */
- if (mti->mti_exp != NULL)
- p->tp_sync = mti->mti_exp->exp_need_sync;
-
- return mdt->mdt_bottom->dd_ops->dt_trans_start(env, mdt->mdt_bottom, p);
-}
-
void mdt_trans_stop(const struct lu_env *env,
- struct mdt_device *mdt, struct thandle *th)
+ struct mdt_device *mdt, struct thandle *th)
{
- mdt->mdt_bottom->dd_ops->dt_trans_stop(env, th);
-}
-
-/* last_rcvd handling */
-static inline void msd_le_to_cpu(struct mdt_server_data *buf,
- struct mdt_server_data *msd)
-{
- memcpy(msd->msd_uuid, buf->msd_uuid, sizeof (msd->msd_uuid));
- msd->msd_last_transno = le64_to_cpu(buf->msd_last_transno);
- msd->msd_mount_count = le64_to_cpu(buf->msd_mount_count);
- msd->msd_feature_compat = le32_to_cpu(buf->msd_feature_compat);
- msd->msd_feature_rocompat = le32_to_cpu(buf->msd_feature_rocompat);
- msd->msd_feature_incompat = le32_to_cpu(buf->msd_feature_incompat);
- msd->msd_server_size = le32_to_cpu(buf->msd_server_size);
- msd->msd_client_start = le32_to_cpu(buf->msd_client_start);
- msd->msd_client_size = le16_to_cpu(buf->msd_client_size);
-}
-
-static inline void msd_cpu_to_le(struct mdt_server_data *msd,
- struct mdt_server_data *buf)
-{
- memcpy(buf->msd_uuid, msd->msd_uuid, sizeof (msd->msd_uuid));
- buf->msd_last_transno = cpu_to_le64(msd->msd_last_transno);
- buf->msd_mount_count = cpu_to_le64(msd->msd_mount_count);
- buf->msd_feature_compat = cpu_to_le32(msd->msd_feature_compat);
- buf->msd_feature_rocompat = cpu_to_le32(msd->msd_feature_rocompat);
- buf->msd_feature_incompat = cpu_to_le32(msd->msd_feature_incompat);
- buf->msd_server_size = cpu_to_le32(msd->msd_server_size);
- buf->msd_client_start = cpu_to_le32(msd->msd_client_start);
- buf->msd_client_size = cpu_to_le16(msd->msd_client_size);
-}
-
-static inline void mcd_le_to_cpu(struct mdt_client_data *buf,
- struct mdt_client_data *mcd)
-{
- memcpy(mcd->mcd_uuid, buf->mcd_uuid, sizeof (mcd->mcd_uuid));
- mcd->mcd_last_transno = le64_to_cpu(buf->mcd_last_transno);
- mcd->mcd_last_xid = le64_to_cpu(buf->mcd_last_xid);
- mcd->mcd_last_result = le32_to_cpu(buf->mcd_last_result);
- mcd->mcd_last_data = le32_to_cpu(buf->mcd_last_data);
- mcd->mcd_last_close_transno = le64_to_cpu(buf->mcd_last_close_transno);
- mcd->mcd_last_close_xid = le64_to_cpu(buf->mcd_last_close_xid);
- mcd->mcd_last_close_result = le32_to_cpu(buf->mcd_last_close_result);
-}
-
-static inline void mcd_cpu_to_le(struct mdt_client_data *mcd,
- struct mdt_client_data *buf)
-{
- memcpy(buf->mcd_uuid, mcd->mcd_uuid, sizeof (mcd->mcd_uuid));
- buf->mcd_last_transno = cpu_to_le64(mcd->mcd_last_transno);
- buf->mcd_last_xid = cpu_to_le64(mcd->mcd_last_xid);
- buf->mcd_last_result = cpu_to_le32(mcd->mcd_last_result);
- buf->mcd_last_data = cpu_to_le32(mcd->mcd_last_data);
- buf->mcd_last_close_transno = cpu_to_le64(mcd->mcd_last_close_transno);
- buf->mcd_last_close_xid = cpu_to_le64(mcd->mcd_last_close_xid);
- buf->mcd_last_close_result = cpu_to_le32(mcd->mcd_last_close_result);
-}
-
-static inline int mdt_last_rcvd_header_read(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- struct mdt_thread_info *mti;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- mti->mti_off = 0;
- rc = mdt_record_read(env, mdt->mdt_last_rcvd,
- mdt_buf(env, &mti->mti_msd, sizeof(mti->mti_msd)),
- &mti->mti_off);
- if (rc == 0)
- msd_le_to_cpu(&mti->mti_msd, &mdt->mdt_msd);
-
- CDEBUG(D_INFO, "read last_rcvd header rc = %d:\n"
- "uuid = %s\n"
- "last_transno = "LPU64"\n",
- rc, mdt->mdt_msd.msd_uuid,
- mdt->mdt_msd.msd_last_transno);
- return rc;
-}
-
-static inline int mdt_last_rcvd_header_write(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- struct mdt_thread_info *mti;
- struct thandle *th;
- int rc;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- th = mdt_trans_start(env, mdt, MDT_TXN_LAST_RCVD_WRITE_CREDITS);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- mti->mti_off = 0;
- msd_cpu_to_le(&mdt->mdt_msd, &mti->mti_msd);
-
- rc = mdt_record_write(env, mdt->mdt_last_rcvd,
- mdt_buf_const(env, &mti->mti_msd, sizeof(mti->mti_msd)),
- &mti->mti_off, th);
-
- mdt_trans_stop(env, mdt, th);
-
- CDEBUG(D_INFO, "write last_rcvd header rc = %d:\n"
- "uuid = %s\nlast_transno = "LPU64"\n",
- rc, mdt->mdt_msd.msd_uuid, mdt->mdt_msd.msd_last_transno);
-
- RETURN(rc);
-}
-
-static int mdt_last_rcvd_read(const struct lu_env *env,
- struct mdt_device *mdt,
- struct mdt_client_data *mcd, loff_t *off)
-{
- struct mdt_thread_info *mti;
- struct mdt_client_data *tmp;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- tmp = &mti->mti_mcd;
- rc = mdt_record_read(env, mdt->mdt_last_rcvd,
- mdt_buf(env, tmp, sizeof(*tmp)), off);
- if (rc == 0)
- mcd_le_to_cpu(tmp, mcd);
-
- CDEBUG(D_INFO, "read mcd @%d rc = %d:\n"
- "uuid = %s\n"
- "last_transno = "LPU64"\n"
- "last_xid = "LPU64"\n"
- "last_result = %d\n"
- "last_data = %d\n"
- "last_close_transno = "LPU64"\n"
- "last_close_xid = "LPU64"\n"
- "last_close_result = %d\n",
- (int)*off - sizeof(*tmp),
- rc,
- mcd->mcd_uuid,
- mcd->mcd_last_transno,
- mcd->mcd_last_xid,
- mcd->mcd_last_result,
- mcd->mcd_last_data,
- mcd->mcd_last_close_transno,
- mcd->mcd_last_close_xid,
- mcd->mcd_last_close_result);
- return rc;
-}
-
-static int mdt_last_rcvd_write(const struct lu_env *env,
- struct mdt_device *mdt,
- struct mdt_client_data *mcd,
- loff_t *off, struct thandle *th)
-{
- struct mdt_thread_info *mti;
- struct mdt_client_data *tmp;
- int rc;
-
- LASSERT(th != NULL);
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- tmp = &mti->mti_mcd;
-
- mcd_cpu_to_le(mcd, tmp);
-
- rc = mdt_record_write(env, mdt->mdt_last_rcvd,
- mdt_buf_const(env, tmp, sizeof(*tmp)), off, th);
-
- CDEBUG(D_INFO, "write mcd @%d rc = %d:\n"
- "uuid = %s\n"
- "last_transno = "LPU64"\n"
- "last_xid = "LPU64"\n"
- "last_result = %d\n"
- "last_data = %d\n"
- "last_close_transno = "LPU64"\n"
- "last_close_xid = "LPU64"\n"
- "last_close_result = %d\n",
- (int)*off - sizeof(*tmp),
- rc,
- mcd->mcd_uuid,
- mcd->mcd_last_transno,
- mcd->mcd_last_xid,
- mcd->mcd_last_result,
- mcd->mcd_last_data,
- mcd->mcd_last_close_transno,
- mcd->mcd_last_close_xid,
- mcd->mcd_last_close_result);
- return rc;
+ dt_trans_stop(env, mdt->mdt_bottom, th);
}
+/*
+ * last_rcvd & last_committed update callbacks
+ */
+extern struct lu_context_key mdt_thread_key;
-static int mdt_clients_data_init(const struct lu_env *env,
- struct mdt_device *mdt,
- unsigned long last_size)
+/* This callback notifies MDT that transaction was done. This is needed by
+ * mdt_save_lock() only. It is similar to new target code and will be removed
+ * as mdt_save_lock() will be converted to use target structures */
+static int mdt_txn_stop_cb(const struct lu_env *env,
+ struct thandle *txn, void *cookie)
{
- struct mdt_server_data *msd = &mdt->mdt_msd;
- struct mdt_client_data *mcd = NULL;
- struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
- loff_t off;
- int cl_idx;
- int rc = 0;
- ENTRY;
-
- /* When we do a clean MDS shutdown, we save the last_transno into
- * the header. If we find clients with higher last_transno values
- * then those clients may need recovery done. */
- LASSERT(atomic_read(&obd->obd_req_replay_clients) == 0);
- for (cl_idx = 0, off = msd->msd_client_start;
- off < last_size; cl_idx++) {
- __u64 last_transno;
- struct obd_export *exp;
-
- if (!mcd) {
- OBD_ALLOC_PTR(mcd);
- if (!mcd)
- RETURN(-ENOMEM);
- }
-
- off = msd->msd_client_start +
- cl_idx * msd->msd_client_size;
+ struct mdt_thread_info *mti;
- rc = mdt_last_rcvd_read(env, mdt, mcd, &off);
- if (rc) {
- CERROR("error reading MDS %s idx %d, off %llu: rc %d\n",
- LAST_RCVD, cl_idx, off, rc);
- rc = 0;
- break; /* read error shouldn't cause startup to fail */
- }
+ mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
+ LASSERT(mti);
- if (mcd->mcd_uuid[0] == '\0') {
- CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
- cl_idx);
- continue;
- }
-
- last_transno = mcd_last_transno(mcd);
-
- /* These exports are cleaned up by mdt_obd_disconnect(), so
- * they need to be set up like real exports as
- * mdt_obd_connect() does.
- */
- CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
- " srv lr: "LPU64" lx: "LPU64"\n", mcd->mcd_uuid, cl_idx,
- last_transno, msd->msd_last_transno,
- mcd_last_xid(mcd));
-
- exp = class_new_export(obd, (struct obd_uuid *)mcd->mcd_uuid);
- if (IS_ERR(exp)) {
- if (PTR_ERR(exp) == -EALREADY) {
- /* export already exists, zero out this one */
- mcd->mcd_uuid[0] = '\0';
- } else
- GOTO(err_client, rc = PTR_ERR(exp));
- } else {
- struct mdt_thread_info *mti;
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
- mti->mti_exp = exp;
- exp->exp_mdt_data.med_mcd = mcd;
- rc = mdt_client_add(env, mdt, cl_idx);
- /* can't fail existing */
- LASSERTF(rc == 0, "rc = %d\n", rc);
- mcd = NULL;
- spin_lock(&exp->exp_lock);
- exp->exp_connecting = 0;
- exp->exp_in_recovery = 0;
- spin_unlock(&exp->exp_lock);
- obd->obd_max_recoverable_clients++;
- class_export_put(exp);
- }
-
- CDEBUG(D_OTHER, "client at idx %d has last_transno="LPU64"\n",
- cl_idx, last_transno);
- /* protect __u64 value update */
- spin_lock(&mdt->mdt_transno_lock);
- mdt->mdt_last_transno = max(last_transno,
- mdt->mdt_last_transno);
- spin_unlock(&mdt->mdt_transno_lock);
- }
-
-err_client:
- if (mcd)
- OBD_FREE_PTR(mcd);
- RETURN(rc);
+ if (mti->mti_has_trans)
+ CDEBUG(D_INFO, "More than one transaction\n");
+ else
+ mti->mti_has_trans = 1;
+ return 0;
}
-static int mdt_server_data_init(const struct lu_env *env,
- struct mdt_device *mdt)
+int mdt_fs_setup(const struct lu_env *env, struct mdt_device *mdt,
+ struct obd_device *obd, struct lustre_sb_info *lsi)
{
- struct mdt_server_data *msd = &mdt->mdt_msd;
- struct mdt_client_data *mcd = NULL;
- struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
- struct mdt_thread_info *mti;
- struct dt_object *obj;
- struct lu_attr *la;
- unsigned long last_rcvd_size;
- __u64 mount_count;
- int rc;
- ENTRY;
-
- /* ensure padding in the struct is the correct size */
- CLASSERT(offsetof(struct mdt_server_data, msd_padding) +
- sizeof(msd->msd_padding) == LR_SERVER_SIZE);
- CLASSERT(offsetof(struct mdt_client_data, mcd_padding) +
- sizeof(mcd->mcd_padding) == LR_CLIENT_SIZE);
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
- la = &mti->mti_attr.ma_attr;
-
- obj = mdt->mdt_last_rcvd;
- rc = obj->do_ops->do_attr_get(env, mdt->mdt_last_rcvd, la, BYPASS_CAPA);
- if (rc)
- RETURN(rc);
-
- last_rcvd_size = (unsigned long)la->la_size;
-
- if (last_rcvd_size == 0) {
- LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
-
- memcpy(msd->msd_uuid, obd->obd_uuid.uuid,
- sizeof(msd->msd_uuid));
- msd->msd_last_transno = 0;
- msd->msd_mount_count = 0;
- msd->msd_server_size = LR_SERVER_SIZE;
- msd->msd_client_start = LR_CLIENT_START;
- msd->msd_client_size = LR_CLIENT_SIZE;
- msd->msd_feature_rocompat = OBD_ROCOMPAT_LOVOBJID;
- msd->msd_feature_incompat = OBD_INCOMPAT_MDT |
- OBD_INCOMPAT_COMMON_LR;
- } else {
- LCONSOLE_WARN("%s: used disk, loading\n", obd->obd_name);
- rc = mdt_last_rcvd_header_read(env, mdt);
- if (rc) {
- CERROR("error reading MDS %s: rc %d\n", LAST_RCVD, rc);
- GOTO(out, rc);
- }
- if (strcmp(msd->msd_uuid, obd->obd_uuid.uuid) != 0) {
- LCONSOLE_ERROR_MSG(0x157, "Trying to start OBD %s using"
- "the wrong disk %s. Were the /dev/ "
- "assignments rearranged?\n",
- obd->obd_uuid.uuid, msd->msd_uuid);
- GOTO(out, rc = -EINVAL);
- }
- }
- mount_count = msd->msd_mount_count;
-
- msd->msd_feature_compat = OBD_COMPAT_MDT;
-
- spin_lock(&mdt->mdt_transno_lock);
- mdt->mdt_last_transno = msd->msd_last_transno;
- spin_unlock(&mdt->mdt_transno_lock);
-
- CDEBUG(D_INODE, "========BEGIN DUMPING LAST_RCVD========\n");
- CDEBUG(D_INODE, "%s: server last_transno: "LPU64"\n",
- obd->obd_name, mdt->mdt_last_transno);
- CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
- obd->obd_name, mount_count + 1);
- CDEBUG(D_INODE, "%s: server data size: %u\n",
- obd->obd_name, msd->msd_server_size);
- CDEBUG(D_INODE, "%s: per-client data start: %u\n",
- obd->obd_name, msd->msd_client_start);
- CDEBUG(D_INODE, "%s: per-client data size: %u\n",
- obd->obd_name, msd->msd_client_size);
- CDEBUG(D_INODE, "%s: last_rcvd size: %lu\n",
- obd->obd_name, last_rcvd_size);
- CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
- last_rcvd_size <= msd->msd_client_start ? 0 :
- (last_rcvd_size - msd->msd_client_start) /
- msd->msd_client_size);
- CDEBUG(D_INODE, "========END DUMPING LAST_RCVD========\n");
-
- if (!msd->msd_server_size || !msd->msd_client_start ||
- !msd->msd_client_size) {
- CERROR("Bad last_rcvd contents!\n");
- GOTO(out, rc = -EINVAL);
- }
+ int rc = 0;
- rc = mdt_clients_data_init(env, mdt, last_rcvd_size);
- if (rc)
- GOTO(err_client, rc);
+ ENTRY;
- spin_lock(&mdt->mdt_transno_lock);
- /* obd_last_committed is used for compatibility
- * with other lustre recovery code */
- obd->obd_last_committed = mdt->mdt_last_transno;
- spin_unlock(&mdt->mdt_transno_lock);
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FS_SETUP))
+ RETURN(-ENOENT);
- mdt->mdt_mount_count++;
- msd->msd_mount_count = mdt->mdt_mount_count;
+ /* prepare transactions callbacks */
+ mdt->mdt_txn_cb.dtc_txn_start = NULL;
+ mdt->mdt_txn_cb.dtc_txn_stop = mdt_txn_stop_cb;
+ mdt->mdt_txn_cb.dtc_txn_commit = NULL;
+ mdt->mdt_txn_cb.dtc_cookie = NULL;
+ mdt->mdt_txn_cb.dtc_tag = LCT_MD_THREAD;
+ INIT_LIST_HEAD(&mdt->mdt_txn_cb.dtc_linkage);
- /* save it, so mount count and last_transno is current */
- rc = mdt_server_data_update(env, mdt);
- if (rc)
- GOTO(err_client, rc);
+ dt_txn_callback_add(mdt->mdt_bottom, &mdt->mdt_txn_cb);
- RETURN(0);
-
-err_client:
- target_recovery_fini(obd);
-out:
- return rc;
+ RETURN(rc);
}
-static int mdt_server_data_update(const struct lu_env *env,
- struct mdt_device *mdt)
+void mdt_fs_cleanup(const struct lu_env *env, struct mdt_device *mdt)
{
- int rc = 0;
ENTRY;
- CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
- mdt->mdt_mount_count, mdt->mdt_last_transno);
-
- spin_lock(&mdt->mdt_transno_lock);
- mdt->mdt_msd.msd_last_transno = mdt->mdt_last_transno;
- spin_unlock(&mdt->mdt_transno_lock);
-
- /*
- * This may be called from difficult reply handler and
- * mdt->mdt_last_rcvd may be NULL that time.
- */
- if (mdt->mdt_last_rcvd != NULL)
- rc = mdt_last_rcvd_header_write(env, mdt);
- RETURN(rc);
+ /* Remove transaction callback */
+ dt_txn_callback_del(mdt->mdt_bottom, &mdt->mdt_txn_cb);
+ if (mdt->mdt_ck_obj)
+ lu_object_put(env, &mdt->mdt_ck_obj->do_lu);
+ mdt->mdt_ck_obj = NULL;
+ EXIT;
}
-void mdt_cb_new_client(const struct mdt_device *mdt, __u64 transno,
- void *data, int err)
+/* reconstruction code */
+static void mdt_steal_ack_locks(struct ptlrpc_request *req)
{
- struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
-
- target_client_add_cb(obd, transno, data, err);
-}
+ struct ptlrpc_service_part *svcpt;
+ struct obd_export *exp = req->rq_export;
+ struct list_head *tmp;
+ struct ptlrpc_reply_state *oldrep;
+ int i;
-int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt)
-{
- unsigned long *bitmap = mdt->mdt_client_bitmap;
- struct mdt_thread_info *mti;
- struct mdt_export_data *med;
- struct mdt_client_data *mcd;
- struct mdt_server_data *msd = &mdt->mdt_msd;
- struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
- struct thandle *th;
- loff_t off;
- int rc;
- int cl_idx;
- ENTRY;
+ /* CAVEAT EMPTOR: spinlock order */
+ spin_lock(&exp->exp_lock);
+ list_for_each(tmp, &exp->exp_outstanding_replies) {
+ oldrep = list_entry(tmp, struct ptlrpc_reply_state,
+ rs_exp_list);
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- med = &mti->mti_exp->exp_mdt_data;
- mcd = med->med_mcd;
+ if (oldrep->rs_xid != req->rq_xid)
+ continue;
- LASSERT(bitmap != NULL);
- if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
- RETURN(0);
+ if (oldrep->rs_opc != lustre_msg_get_opc(req->rq_reqmsg))
+ CERROR ("Resent req xid "LPU64" has mismatched opc: "
+ "new %d old %d\n", req->rq_xid,
+ lustre_msg_get_opc(req->rq_reqmsg),
+ oldrep->rs_opc);
- /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
- * there's no need for extra complication here
- */
- spin_lock(&mdt->mdt_client_bitmap_lock);
- cl_idx = find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
- if (cl_idx >= LR_MAX_CLIENTS ||
- MDT_FAIL_CHECK_ONCE(OBD_FAIL_MDS_CLIENT_ADD)) {
- CERROR("no room for %u clients - fix LR_MAX_CLIENTS\n",
- cl_idx);
- spin_unlock(&mdt->mdt_client_bitmap_lock);
- RETURN(-EOVERFLOW);
- }
- set_bit(cl_idx, bitmap);
- spin_unlock(&mdt->mdt_client_bitmap_lock);
+ svcpt = oldrep->rs_svcpt;
+ spin_lock(&svcpt->scp_rep_lock);
- CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
- cl_idx, med->med_mcd->mcd_uuid);
+ list_del_init(&oldrep->rs_exp_list);
- med->med_lr_idx = cl_idx;
- med->med_lr_off = msd->msd_client_start +
- (cl_idx * msd->msd_client_size);
- init_mutex(&med->med_mcd_lock);
+ CDEBUG(D_HA, "Stealing %d locks from rs %p x"LPD64".t"LPD64
+ " o%d NID %s\n",
+ oldrep->rs_nlocks, oldrep,
+ oldrep->rs_xid, oldrep->rs_transno, oldrep->rs_opc,
+ libcfs_nid2str(exp->exp_connection->c_peer.nid));
- LASSERTF(med->med_lr_off > 0, "med_lr_off = %llu\n", med->med_lr_off);
- /* write new client data */
- off = med->med_lr_off;
- th = mdt_trans_start(env, mdt, MDT_TXN_LAST_RCVD_WRITE_CREDITS);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
+ for (i = 0; i < oldrep->rs_nlocks; i++)
+ ptlrpc_save_lock(req, &oldrep->rs_locks[i],
+ oldrep->rs_modes[i], 0);
+ oldrep->rs_nlocks = 0;
- /* until this operations will be committed the sync is needed for this
- * export */
- mdt_trans_add_cb(th, mdt_cb_new_client, mti->mti_exp);
- spin_lock(&mti->mti_exp->exp_lock);
- mti->mti_exp->exp_need_sync = 1;
- spin_unlock(&mti->mti_exp->exp_lock);
+ DEBUG_REQ(D_HA, req, "stole locks for");
+ spin_lock(&oldrep->rs_lock);
+ ptlrpc_schedule_difficult_reply(oldrep);
+ spin_unlock(&oldrep->rs_lock);
- rc = mdt_last_rcvd_write(env, mdt, mcd, &off, th);
- CDEBUG(D_INFO, "wrote client mcd at idx %u off %llu (len %u)\n",
- cl_idx, med->med_lr_off, sizeof(*mcd));
- mdt_trans_stop(env, mdt, th);
-
- RETURN(rc);
+ spin_unlock(&svcpt->scp_rep_lock);
+ break;
+ }
+ spin_unlock(&exp->exp_lock);
}
-/* Add client data to the MDS. We use a bitmap to locate a free space
- * in the last_rcvd file if cl_off is -1 (i.e. a new client).
- * Otherwise, we just have to read the data from the last_rcvd file and
- * we know its offset.
- *
- * It should not be possible to fail adding an existing client - otherwise
- * mdt_init_server_data() callsite needs to be fixed.
+/**
+ * VBR: restore versions
*/
-int mdt_client_add(const struct lu_env *env,
- struct mdt_device *mdt, int cl_idx)
-{
- struct mdt_thread_info *mti;
- struct mdt_export_data *med;
- unsigned long *bitmap = mdt->mdt_client_bitmap;
- struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
- struct mdt_server_data *msd = &mdt->mdt_msd;
- int rc = 0;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- med = &mti->mti_exp->exp_mdt_data;
-
- LASSERT(bitmap != NULL);
- LASSERTF(cl_idx >= 0, "%d\n", cl_idx);
-
- if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
- RETURN(0);
-
- spin_lock(&mdt->mdt_client_bitmap_lock);
- if (test_and_set_bit(cl_idx, bitmap)) {
- CERROR("MDS client %d: bit already set in bitmap!!\n",
- cl_idx);
- LBUG();
- }
- spin_unlock(&mdt->mdt_client_bitmap_lock);
-
- CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
- cl_idx, med->med_mcd->mcd_uuid);
-
- med->med_lr_idx = cl_idx;
- med->med_lr_off = msd->msd_client_start +
- (cl_idx * msd->msd_client_size);
- init_mutex(&med->med_mcd_lock);
-
- LASSERTF(med->med_lr_off > 0, "med_lr_off = %llu\n", med->med_lr_off);
-
- RETURN(rc);
-}
-
-int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
+static void mdt_vbr_reconstruct(struct ptlrpc_request *req,
+ struct lsd_client_data *lcd)
{
- struct mdt_thread_info *mti;
- struct mdt_export_data *med;
- struct mdt_client_data *mcd;
- struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
- struct thandle *th;
- loff_t off;
- int rc = 0;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- med = &mti->mti_exp->exp_mdt_data;
- mcd = med->med_mcd;
- if (!mcd)
- RETURN(0);
-
- /* XXX: If mcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
- if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
- GOTO(free, 0);
-
- CDEBUG(D_INFO, "freeing client at idx %u, offset %lld\n",
- med->med_lr_idx, med->med_lr_off);
-
- off = med->med_lr_off;
-
- /*
- * Don't clear med_lr_idx here as it is likely also unset. At worst we
- * leak a client slot that will be cleaned on the next recovery.
- */
- if (off <= 0) {
- CERROR("client idx %d has offset %lld\n",
- med->med_lr_idx, off);
- GOTO(free, rc = -EINVAL);
- }
-
- /*
- * Clear the bit _after_ zeroing out the client so we don't race with
- * mdt_client_add and zero out new clients.
- */
- if (!test_bit(med->med_lr_idx, mdt->mdt_client_bitmap)) {
- CERROR("MDT client %u: bit already clear in bitmap!!\n",
- med->med_lr_idx);
- LBUG();
- }
-
- /*
- * This may be called from difficult reply handler path and
- * mdt->mdt_last_rcvd may be NULL that time.
- */
- if (mdt->mdt_last_rcvd != NULL) {
- th = mdt_trans_start(env, mdt, MDT_TXN_LAST_RCVD_WRITE_CREDITS);
- if (IS_ERR(th))
- GOTO(free, rc = PTR_ERR(th));
-
- mutex_down(&med->med_mcd_lock);
- memset(mcd, 0, sizeof *mcd);
-
- rc = mdt_last_rcvd_write(env, mdt, mcd, &off, th);
- mutex_up(&med->med_mcd_lock);
- mdt_trans_stop(env, mdt, th);
- }
-
- CDEBUG(rc == 0 ? D_INFO : D_ERROR, "Zeroing out client idx %u in "
- "%s rc %d\n", med->med_lr_idx, LAST_RCVD, rc);
-
- spin_lock(&mdt->mdt_client_bitmap_lock);
- clear_bit(med->med_lr_idx, mdt->mdt_client_bitmap);
- spin_unlock(&mdt->mdt_client_bitmap_lock);
-
- /*
- * Make sure the server's last_transno is up to date. Do this after the
- * client is freed so we know all the client's transactions have been
- * committed.
- */
- mdt_server_data_update(env, mdt);
- EXIT;
-free:
- OBD_FREE_PTR(mcd);
- med->med_mcd = NULL;
- return 0;
+ __u64 pre_versions[4] = {0};
+ pre_versions[0] = lcd->lcd_pre_versions[0];
+ pre_versions[1] = lcd->lcd_pre_versions[1];
+ pre_versions[2] = lcd->lcd_pre_versions[2];
+ pre_versions[3] = lcd->lcd_pre_versions[3];
+ lustre_msg_set_versions(req->rq_repmsg, pre_versions);
}
-/*
- * last_rcvd & last_committed update callbacks
- */
-static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
- struct thandle *th)
+void mdt_req_from_lcd(struct ptlrpc_request *req, struct lsd_client_data *lcd)
{
- struct mdt_device *mdt = mti->mti_mdt;
- struct ptlrpc_request *req = mdt_info_req(mti);
- struct mdt_export_data *med;
- struct mdt_client_data *mcd;
- loff_t off;
- int err;
- __s32 rc = th->th_result;
- __u64 *transno_p;
-
- ENTRY;
- LASSERT(req);
- LASSERT(req->rq_export);
- LASSERT(mdt);
- med = &req->rq_export->exp_mdt_data;
- LASSERT(med);
- mcd = med->med_mcd;
- /* if the export has already been failed, we have no last_rcvd slot */
- if (req->rq_export->exp_failed) {
- CWARN("commit transaction for disconnected client %s: rc %d\n",
- req->rq_export->exp_client_uuid.uuid, rc);
- if (rc == 0)
- rc = -ENOTCONN;
- RETURN(rc);
- }
+ DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
+ lcd->lcd_last_transno, lcd->lcd_last_result);
- off = med->med_lr_off;
- mutex_down(&med->med_mcd_lock);
if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
- lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
- transno_p = &mcd->mcd_last_close_transno;
- mcd->mcd_last_close_xid = req->rq_xid;
- mcd->mcd_last_close_result = rc;
- } else {
- transno_p = &mcd->mcd_last_transno;
- mcd->mcd_last_xid = req->rq_xid;
- mcd->mcd_last_result = rc;
- /*XXX: save intent_disposition in mdt_thread_info?
- * also there is bug - intent_dispostion is __u64,
- * see struct ldlm_reply->lock_policy_res1; */
- mcd->mcd_last_data = mti->mti_opdata;
- }
-
- /*
- * When we store zero transno in mcd we can lost last transno value
- * because mcd contains 0, but msd is not yet written
- * The server data should be updated also if the latest
- * transno is rewritten by zero. See the bug 11125 for details.
- */
- if (mti->mti_transno == 0 &&
- *transno_p == mdt->mdt_last_transno)
- mdt_server_data_update(mti->mti_env, mdt);
-
- *transno_p = mti->mti_transno;
-
- if (off <= 0) {
- CERROR("client idx %d has offset %lld\n", med->med_lr_idx, off);
- err = -EINVAL;
- } else {
- err = mdt_last_rcvd_write(mti->mti_env, mdt, mcd, &off, th);
- }
- mutex_up(&med->med_mcd_lock);
- RETURN(err);
-}
-
-extern struct lu_context_key mdt_thread_key;
-
-/* add credits for last_rcvd update */
-static int mdt_txn_start_cb(const struct lu_env *env,
- struct txn_param *param, void *cookie)
-{
- param->tp_credits += MDT_TXN_LAST_RCVD_WRITE_CREDITS;
- return 0;
-}
-
-/* Update last_rcvd records with latests transaction data */
-static int mdt_txn_stop_cb(const struct lu_env *env,
- struct thandle *txn, void *cookie)
-{
- struct mdt_device *mdt = cookie;
- struct mdt_txn_info *txi;
- struct mdt_thread_info *mti;
- struct ptlrpc_request *req;
-
- /* transno in two contexts - for commit_cb and for thread */
- txi = lu_context_key_get(&txn->th_ctx, &mdt_txn_key);
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- req = mdt_info_req(mti);
-
- if (mti->mti_mdt == NULL || req == NULL || mti->mti_no_need_trans) {
- txi->txi_transno = 0;
- mti->mti_no_need_trans = 0;
- return 0;
- }
-
- if (mti->mti_has_trans) {
- /* XXX: currently there are allowed cases, but the wrong cases
- * are also possible, so better check is needed here */
- CDEBUG(D_INFO, "More than one transaction "LPU64"\n", mti->mti_transno);
- return 0;
- }
-
- mti->mti_has_trans = 1;
- spin_lock(&mdt->mdt_transno_lock);
- if (txn->th_result != 0) {
- if (mti->mti_transno != 0) {
- CERROR("Replay transno "LPU64" failed: rc %i\n",
- mti->mti_transno, txn->th_result);
- mti->mti_transno = 0;
- }
- } else if (mti->mti_transno == 0) {
- mti->mti_transno = ++ mdt->mdt_last_transno;
- } else {
- /* should be replay */
- if (mti->mti_transno > mdt->mdt_last_transno)
- mdt->mdt_last_transno = mti->mti_transno;
- }
-
- /* sometimes the reply message has not been successfully packed */
- LASSERT(req != NULL && req->rq_repmsg != NULL);
-
- /* filling reply data */
- CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n",
- mti->mti_transno, req->rq_export->exp_obd->obd_last_committed);
-
- req->rq_transno = mti->mti_transno;
- lustre_msg_set_transno(req->rq_repmsg, mti->mti_transno);
- lustre_msg_set_last_xid(req->rq_repmsg,
- mcd_last_xid(req->rq_export->exp_mdt_data.med_mcd));
- /* save transno for the commit callback */
- txi->txi_transno = mti->mti_transno;
- spin_unlock(&mdt->mdt_transno_lock);
-
- return mdt_last_rcvd_update(mti, txn);
-}
-
-/* commit callback, need to update last_commited value */
-static int mdt_txn_commit_cb(const struct lu_env *env,
- struct thandle *txn, void *cookie)
-{
- struct mdt_device *mdt = cookie;
- struct obd_device *obd = md2lu_dev(&mdt->mdt_md_dev)->ld_obd;
- struct mdt_txn_info *txi;
- int i;
-
- txi = lu_context_key_get(&txn->th_ctx, &mdt_txn_key);
-
- /* copy of obd_transno_commit_cb() but with locking */
- spin_lock(&mdt->mdt_transno_lock);
- if (txi->txi_transno > obd->obd_last_committed) {
- obd->obd_last_committed = txi->txi_transno;
- spin_unlock(&mdt->mdt_transno_lock);
- ptlrpc_commit_replies(obd);
- } else
- spin_unlock(&mdt->mdt_transno_lock);
-
- if (txi->txi_transno)
- CDEBUG(D_HA, "%s: transno "LPD64" is committed\n",
- obd->obd_name, txi->txi_transno);
-
- /* iterate through all additional callbacks */
- for (i = 0; i < txi->txi_cb_count; i++) {
- txi->txi_cb[i].mdt_cb_func(mdt, txi->txi_transno,
- txi->txi_cb[i].mdt_cb_data, 0);
- }
- return 0;
-}
-
-int mdt_fs_setup(const struct lu_env *env, struct mdt_device *mdt,
- struct obd_device *obd)
-{
- struct lu_fid fid;
- struct dt_object *o;
- int rc = 0;
- ENTRY;
-
- OBD_FAIL_RETURN(OBD_FAIL_MDS_FS_SETUP, -ENOENT);
-
- /* prepare transactions callbacks */
- mdt->mdt_txn_cb.dtc_txn_start = mdt_txn_start_cb;
- mdt->mdt_txn_cb.dtc_txn_stop = mdt_txn_stop_cb;
- mdt->mdt_txn_cb.dtc_txn_commit = mdt_txn_commit_cb;
- mdt->mdt_txn_cb.dtc_cookie = mdt;
- INIT_LIST_HEAD(&mdt->mdt_txn_cb.dtc_linkage);
-
- dt_txn_callback_add(mdt->mdt_bottom, &mdt->mdt_txn_cb);
-
- o = dt_store_open(env, mdt->mdt_bottom, LAST_RCVD, &fid);
- if (!IS_ERR(o)) {
- mdt->mdt_last_rcvd = o;
- rc = mdt_server_data_init(env, mdt);
- if (rc)
- GOTO(put_last_rcvd, rc);
- } else {
- rc = PTR_ERR(o);
- CERROR("cannot open %s: rc = %d\n", LAST_RCVD, rc);
- RETURN(rc);
- }
-
- o = dt_store_open(env, mdt->mdt_bottom, CAPA_KEYS, &fid);
- if (!IS_ERR(o)) {
- mdt->mdt_ck_obj = o;
- rc = mdt_capa_keys_init(env, mdt);
- if (rc)
- GOTO(put_ck_object, rc);
+ lustre_msg_get_opc(req->rq_repmsg) == MDS_DONE_WRITING) {
+ req->rq_transno = lcd->lcd_last_close_transno;
+ req->rq_status = lcd->lcd_last_close_result;
} else {
- rc = PTR_ERR(o);
- CERROR("cannot open %s: rc = %d\n", CAPA_KEYS, rc);
- GOTO(put_last_rcvd, rc);
+ req->rq_transno = lcd->lcd_last_transno;
+ req->rq_status = lcd->lcd_last_result;
+ mdt_vbr_reconstruct(req, lcd);
}
- RETURN(0);
-
-put_ck_object:
- lu_object_put(env, &o->do_lu);
- mdt->mdt_ck_obj = NULL;
-put_last_rcvd:
- lu_object_put(env, &mdt->mdt_last_rcvd->do_lu);
- mdt->mdt_last_rcvd = NULL;
- return rc;
-}
-
+ if (req->rq_status != 0)
+ req->rq_transno = 0;
+ lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
+ lustre_msg_set_status(req->rq_repmsg, req->rq_status);
+ DEBUG_REQ(D_RPCTRACE, req, "restoring transno "LPD64"/status %d",
+ req->rq_transno, req->rq_status);
-void mdt_fs_cleanup(const struct lu_env *env, struct mdt_device *mdt)
-{
- ENTRY;
-
- /* Remove transaction callback */
- dt_txn_callback_del(mdt->mdt_bottom, &mdt->mdt_txn_cb);
- if (mdt->mdt_last_rcvd)
- lu_object_put(env, &mdt->mdt_last_rcvd->do_lu);
- mdt->mdt_last_rcvd = NULL;
- if (mdt->mdt_ck_obj)
- lu_object_put(env, &mdt->mdt_ck_obj->do_lu);
- mdt->mdt_ck_obj = NULL;
- EXIT;
+ mdt_steal_ack_locks(req);
}
-/* reconstruction code */
-extern void mds_steal_ack_locks(struct ptlrpc_request *req);
-void mdt_req_from_mcd(struct ptlrpc_request *req,
- struct mdt_client_data *mcd)
+void mdt_reconstruct_generic(struct mdt_thread_info *mti,
+ struct mdt_lock_handle *lhc)
{
- DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
- mcd->mcd_last_transno, mcd->mcd_last_result);
+ struct ptlrpc_request *req = mdt_info_req(mti);
+ struct tg_export_data *ted = &req->rq_export->exp_target_data;
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
- lustre_msg_get_opc(req->rq_repmsg) == MDS_DONE_WRITING) {
- req->rq_transno = mcd->mcd_last_close_transno;
- req->rq_status = mcd->mcd_last_close_result;
- lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
- lustre_msg_set_status(req->rq_repmsg, req->rq_status);
- } else {
- req->rq_transno = mcd->mcd_last_transno;
- req->rq_status = mcd->mcd_last_result;
- lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
- lustre_msg_set_status(req->rq_repmsg, req->rq_status);
- }
- mds_steal_ack_locks(req);
+ return mdt_req_from_lcd(req, ted->ted_lcd);
}
-static void mdt_reconstruct_generic(struct mdt_thread_info *mti,
- struct mdt_lock_handle *lhc)
+/**
+ * Generate fake attributes for a non-existing object
+ *
+ * While the client was waiting for the reply, the original transaction
+ * got committed and corresponding rep-ack lock got released, then another
+ * client was able to destroy the object. But we still need to send some
+ * attributes back. So we fake them and set nlink=0, so the client will
+ * be able to detect a non-existing object and drop it from the cache
+ * immediately.
+ *
+ * \param[out] ma attributes to fill
+ */
+static void mdt_fake_ma(struct md_attr *ma)
{
- struct ptlrpc_request *req = mdt_info_req(mti);
- struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
-
- return mdt_req_from_mcd(req, med->med_mcd);
+ ma->ma_valid = MA_INODE;
+ memset(&ma->ma_attr, 0, sizeof(ma->ma_attr));
+ ma->ma_attr.la_valid = LA_NLINK;
+ ma->ma_attr.la_mode = S_IFREG;
}
static void mdt_reconstruct_create(struct mdt_thread_info *mti,
struct mdt_lock_handle *lhc)
{
struct ptlrpc_request *req = mdt_info_req(mti);
- struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
+ struct obd_export *exp = req->rq_export;
+ struct tg_export_data *ted = &exp->exp_target_data;
struct mdt_device *mdt = mti->mti_mdt;
struct mdt_object *child;
struct mdt_body *body;
int rc;
- mdt_req_from_mcd(req, med->med_mcd);
+ mdt_req_from_lcd(req, ted->ted_lcd);
if (req->rq_status)
return;
- /* if no error, so child was created with requested fid */
- child = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid2);
- LASSERT(!IS_ERR(child));
-
- body = req_capsule_server_get(&mti->mti_pill, &RMF_MDT_BODY);
- rc = mo_attr_get(mti->mti_env, mdt_object_child(child), &mti->mti_attr);
- if (rc == -EREMOTE) {
- /* object was created on remote server */
- req->rq_status = rc;
- body->valid |= OBD_MD_MDS;
- }
- mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr, mdt_object_fid(child));
- mdt_object_put(mti->mti_env, child);
+ /* if no error, so child was created with requested fid */
+ child = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid2);
+ if (IS_ERR(child)) {
+ rc = PTR_ERR(child);
+ LCONSOLE_WARN("cannot lookup child "DFID": rc = %d; "
+ "evicting client %s with export %s\n",
+ PFID(mti->mti_rr.rr_fid2), rc,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp));
+ mdt_export_evict(exp);
+ RETURN_EXIT;
+ }
+
+ body = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
+ mti->mti_attr.ma_need = MA_INODE;
+ mti->mti_attr.ma_valid = 0;
+ rc = mdt_attr_get_complex(mti, child, &mti->mti_attr);
+ if (rc == -ENOENT) {
+ mdt_fake_ma(&mti->mti_attr);
+ } else if (rc == -EREMOTE) {
+ /* object was created on remote server */
+ if (!mdt_is_dne_client(exp))
+ /* Return -EIO for old client */
+ rc = -EIO;
+
+ req->rq_status = rc;
+ body->mbo_valid |= OBD_MD_MDS;
+ }
+ mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr,
+ mdt_object_fid(child));
+ mdt_object_put(mti->mti_env, child);
}
static void mdt_reconstruct_setattr(struct mdt_thread_info *mti,
struct mdt_lock_handle *lhc)
{
struct ptlrpc_request *req = mdt_info_req(mti);
- struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
+ struct obd_export *exp = req->rq_export;
+ struct mdt_export_data *med = &exp->exp_mdt_data;
struct mdt_device *mdt = mti->mti_mdt;
struct mdt_object *obj;
struct mdt_body *body;
+ int rc;
- mdt_req_from_mcd(req, med->med_mcd);
+ mdt_req_from_lcd(req, med->med_ted.ted_lcd);
if (req->rq_status)
return;
- body = req_capsule_server_get(&mti->mti_pill, &RMF_MDT_BODY);
+ body = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
obj = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid1);
- LASSERT(!IS_ERR(obj));
- mo_attr_get(mti->mti_env, mdt_object_child(obj), &mti->mti_attr);
- mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr, mdt_object_fid(obj));
-
- /* Don't return OST-specific attributes if we didn't just set them */
-/*
- if (rec->ur_iattr.ia_valid & ATTR_SIZE)
- body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
- if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
- body->valid |= OBD_MD_FLMTIME;
- if (rec->ur_iattr.ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
- body->valid |= OBD_MD_FLATIME;
-*/
- mdt_object_put(mti->mti_env, obj);
-}
-
-static void mdt_reconstruct_with_shrink(struct mdt_thread_info *mti,
- struct mdt_lock_handle *lhc)
-{
- mdt_reconstruct_generic(mti, lhc);
- mdt_shrink_reply(mti);
+ if (IS_ERR(obj)) {
+ rc = PTR_ERR(obj);
+ LCONSOLE_WARN("cannot lookup "DFID": rc = %d; "
+ "evicting client %s with export %s\n",
+ PFID(mti->mti_rr.rr_fid1), rc,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp));
+ mdt_export_evict(exp);
+ RETURN_EXIT;
+ }
+
+ mti->mti_attr.ma_need = MA_INODE;
+ mti->mti_attr.ma_valid = 0;
+
+ rc = mdt_attr_get_complex(mti, obj, &mti->mti_attr);
+ if (rc == -ENOENT)
+ mdt_fake_ma(&mti->mti_attr);
+ mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr,
+ mdt_object_fid(obj));
+ if (mti->mti_ioepoch && (mti->mti_ioepoch->flags & MF_EPOCH_OPEN)) {
+ struct mdt_file_data *mfd;
+ struct mdt_body *repbody;
+
+ repbody = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
+ repbody->mbo_ioepoch = obj->mot_ioepoch;
+ spin_lock(&med->med_open_lock);
+ list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
+ if (mfd->mfd_xid == req->rq_xid)
+ break;
+ }
+ LASSERT(&mfd->mfd_list != &med->med_open_head);
+ spin_unlock(&med->med_open_lock);
+ repbody->mbo_handle.cookie = mfd->mfd_handle.h_cookie;
+ }
+
+ mdt_object_put(mti->mti_env, obj);
}
typedef void (*mdt_reconstructor)(struct mdt_thread_info *mti,
[REINT_SETATTR] = mdt_reconstruct_setattr,
[REINT_CREATE] = mdt_reconstruct_create,
[REINT_LINK] = mdt_reconstruct_generic,
- [REINT_UNLINK] = mdt_reconstruct_with_shrink,
- [REINT_RENAME] = mdt_reconstruct_with_shrink,
- [REINT_OPEN] = mdt_reconstruct_open
+ [REINT_UNLINK] = mdt_reconstruct_generic,
+ [REINT_RENAME] = mdt_reconstruct_generic,
+ [REINT_OPEN] = mdt_reconstruct_open,
+ [REINT_SETXATTR] = mdt_reconstruct_generic
};
void mdt_reconstruct(struct mdt_thread_info *mti,
reconstructors[mti->mti_rr.rr_opcode](mti, lhc);
EXIT;
}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff