-/* -*- 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.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* 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;
}
-static inline int mdt_trans_credit_get(const struct lu_env *env,
- struct mdt_device *mdt,
- enum mdt_txn_op op)
-{
- struct dt_device *dev = mdt->mdt_bottom;
- int cr;
- switch (op) {
- case MDT_TXN_CAPA_KEYS_WRITE_OP:
- case MDT_TXN_LAST_RCVD_WRITE_OP:
- cr = dev->dd_ops->dt_credit_get(env,
- dev,
- DTO_WRITE_BLOCK);
- break;
- default:
- LBUG();
- }
- return cr;
-}
-
-void mdt_trans_credit_init(const struct lu_env *env,
- struct mdt_device *mdt,
- enum mdt_txn_op op)
-{
- struct mdt_thread_info *mti;
- struct txn_param *p;
- int cr;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- p = &mti->mti_txn_param;
-
- cr = mdt_trans_credit_get(env, mdt, op);
- txn_param_init(p, cr);
-}
-
-struct thandle* mdt_trans_start(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- 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;
-
- /* 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)
-{
- mdt->mdt_bottom->dd_ops->dt_trans_stop(env, th);
-}
-
-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 = dt_record_read(env, mdt->mdt_last_rcvd,
- mdt_buf(env, &mti->mti_lsd, sizeof(mti->mti_lsd)),
- &mti->mti_off);
- if (rc == 0)
- lsd_le_to_cpu(&mti->mti_lsd, &mdt->mdt_lsd);
-
- CDEBUG(D_INFO, "read last_rcvd header rc = %d, uuid = %s, "
- "last_transno = "LPU64"\n", rc, mdt->mdt_lsd.lsd_uuid,
- mdt->mdt_lsd.lsd_last_transno);
- return rc;
-}
-
-static int mdt_last_rcvd_header_write(const struct lu_env *env,
- struct mdt_device *mdt,
- struct thandle *th)
-{
- struct mdt_thread_info *mti;
- int rc;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- mti->mti_off = 0;
- lsd_cpu_to_le(&mdt->mdt_lsd, &mti->mti_lsd);
-
- rc = dt_record_write(env, mdt->mdt_last_rcvd,
- mdt_buf_const(env, &mti->mti_lsd,
- sizeof(mti->mti_lsd)),
- &mti->mti_off, th);
-
- CDEBUG(D_INFO, "write last_rcvd header rc = %d, uuid = %s, "
- "last_transno = "LPU64"\n", rc, mdt->mdt_lsd.lsd_uuid,
- mdt->mdt_lsd.lsd_last_transno);
-
- RETURN(rc);
-}
-
-static int mdt_last_rcvd_read(const struct lu_env *env, struct mdt_device *mdt,
- struct lsd_client_data *lcd, loff_t *off,
- int index)
-{
- struct mdt_thread_info *mti;
- struct lsd_client_data *tmp;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- tmp = &mti->mti_lcd;
- rc = dt_record_read(env, mdt->mdt_last_rcvd,
- mdt_buf(env, tmp, sizeof(*tmp)), off);
- if (rc == 0) {
- check_lcd(mdt2obd_dev(mdt)->obd_name, index, tmp);
- lcd_le_to_cpu(tmp, lcd);
- }
-
- CDEBUG(D_INFO, "read lcd @%d rc = %d, uuid = %s, last_transno = "LPU64
- ", last_xid = "LPU64", last_result = %u, last_data = %u, "
- "last_close_transno = "LPU64", last_close_xid = "LPU64", "
- "last_close_result = %u\n", (int)(*off - sizeof(*tmp)),
- rc, lcd->lcd_uuid, lcd->lcd_last_transno, lcd->lcd_last_xid,
- lcd->lcd_last_result, lcd->lcd_last_data,
- lcd->lcd_last_close_transno, lcd->lcd_last_close_xid,
- lcd->lcd_last_close_result);
- return rc;
-}
-
-static int mdt_last_rcvd_write(const struct lu_env *env,
- struct mdt_device *mdt,
- struct lsd_client_data *lcd,
- loff_t *off, struct thandle *th)
-{
- struct mdt_thread_info *mti;
- struct lsd_client_data *tmp;
- int rc;
-
- LASSERT(th != NULL);
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- tmp = &mti->mti_lcd;
-
- lcd_cpu_to_le(lcd, tmp);
-
- rc = dt_record_write(env, mdt->mdt_last_rcvd,
- mdt_buf_const(env, tmp, sizeof(*tmp)), off, th);
-
- CDEBUG(D_INFO, "write lcd @%d rc = %d, uuid = %s, last_transno = "LPU64
- ", last_xid = "LPU64", last_result = %u, last_data = %u, "
- "last_close_transno = "LPU64", last_close_xid = "LPU64" ,"
- "last_close_result = %u\n", (int)(*off - sizeof(*tmp)),
- rc, lcd->lcd_uuid, lcd->lcd_last_transno, lcd->lcd_last_xid,
- lcd->lcd_last_result, lcd->lcd_last_data,
- lcd->lcd_last_close_transno, lcd->lcd_last_close_xid,
- lcd->lcd_last_close_result);
- return rc;
-}
-
-static int mdt_clients_data_init(const struct lu_env *env,
- struct mdt_device *mdt,
- unsigned long last_size)
-{
- struct lr_server_data *lsd = &mdt->mdt_lsd;
- struct lsd_client_data *lcd = NULL;
- struct obd_device *obd = mdt2obd_dev(mdt);
- 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(cfs_atomic_read(&obd->obd_req_replay_clients) == 0);
- for (cl_idx = 0, off = lsd->lsd_client_start;
- off < last_size; cl_idx++) {
- __u64 last_transno;
- struct obd_export *exp;
-
- if (!lcd) {
- OBD_ALLOC_PTR(lcd);
- if (!lcd)
- RETURN(-ENOMEM);
- }
-
- off = lsd->lsd_client_start +
- cl_idx * lsd->lsd_client_size;
-
- rc = mdt_last_rcvd_read(env, mdt, lcd, &off, cl_idx);
- 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 */
- }
-
- if (lcd->lcd_uuid[0] == '\0') {
- CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
- cl_idx);
- continue;
- }
-
- last_transno = lcd_last_transno(lcd);
-
- /* 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", lcd->lcd_uuid, cl_idx,
- last_transno, lsd->lsd_last_transno,
- lcd_last_xid(lcd));
-
- exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
- if (IS_ERR(exp)) {
- if (PTR_ERR(exp) == -EALREADY) {
- /* export already exists, zero out this one */
- lcd->lcd_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_lcd = lcd;
- rc = mdt_client_add(env, mdt, cl_idx);
- /* can't fail existing */
- LASSERTF(rc == 0, "rc = %d\n", rc);
- /* VBR: set export last committed version */
- exp->exp_last_committed = last_transno;
- lcd = NULL;
- cfs_spin_lock(&exp->exp_lock);
- exp->exp_connecting = 0;
- exp->exp_in_recovery = 0;
- cfs_spin_unlock(&exp->exp_lock);
- obd->obd_max_recoverable_clients++;
- class_export_put(exp);
- }
-
- CDEBUG(D_OTHER, "client at idx %d has last_transno="LPU64"\n",
- cl_idx, last_transno);
- /* protect __u64 value update */
- cfs_spin_lock(&mdt->mdt_transno_lock);
- mdt->mdt_last_transno = max(last_transno,
- mdt->mdt_last_transno);
- cfs_spin_unlock(&mdt->mdt_transno_lock);
- }
-
-err_client:
- if (lcd)
- OBD_FREE_PTR(lcd);
- RETURN(rc);
-}
-
-static int mdt_server_data_init(const struct lu_env *env,
- struct mdt_device *mdt,
- struct lustre_sb_info *lsi)
-{
- struct lr_server_data *lsd = &mdt->mdt_lsd;
- struct lsd_client_data *lcd = NULL;
- struct obd_device *obd = mdt2obd_dev(mdt);
- struct mdt_thread_info *mti;
- struct dt_object *obj;
- struct lu_attr *la;
- struct lustre_disk_data *ldd;
- unsigned long last_rcvd_size;
- __u64 mount_count;
- int rc;
- ENTRY;
-
- /* ensure padding in the struct is the correct size */
- CLASSERT(offsetof(struct lr_server_data, lsd_padding) +
- sizeof(lsd->lsd_padding) == LR_SERVER_SIZE);
- CLASSERT(offsetof(struct lsd_client_data, lcd_padding) +
- sizeof(lcd->lcd_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(lsd->lsd_uuid, obd->obd_uuid.uuid,
- sizeof(lsd->lsd_uuid));
- lsd->lsd_last_transno = 0;
- lsd->lsd_mount_count = 0;
- lsd->lsd_server_size = LR_SERVER_SIZE;
- lsd->lsd_client_start = LR_CLIENT_START;
- lsd->lsd_client_size = LR_CLIENT_SIZE;
- lsd->lsd_feature_compat = OBD_COMPAT_MDT;
- lsd->lsd_feature_rocompat = OBD_ROCOMPAT_LOVOBJID;
- lsd->lsd_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(lsd->lsd_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, lsd->lsd_uuid);
- GOTO(out, rc = -EINVAL);
- }
- lsd->lsd_feature_compat |= OBD_COMPAT_MDT;
- lsd->lsd_feature_incompat |= OBD_INCOMPAT_MDT |
- OBD_INCOMPAT_COMMON_LR;
- }
- mount_count = lsd->lsd_mount_count;
-
- ldd = lsi->lsi_ldd;
-
- if (lsd->lsd_feature_incompat & ~MDT_INCOMPAT_SUPP) {
- CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
- obd->obd_name,
- lsd->lsd_feature_incompat & ~MDT_INCOMPAT_SUPP);
- GOTO(out, rc = -EINVAL);
- }
- if (lsd->lsd_feature_rocompat & ~MDT_ROCOMPAT_SUPP) {
- CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
- obd->obd_name,
- lsd->lsd_feature_rocompat & ~MDT_ROCOMPAT_SUPP);
- /* XXX: Do something like remount filesystem read-only */
- GOTO(out, rc = -EINVAL);
- }
- /** Interop: evict all clients at first boot with 1.8 last_rcvd */
- if (!(lsd->lsd_feature_compat & OBD_COMPAT_20)) {
- LCONSOLE_WARN("Mounting %s at first time on 1.8 FS, remove all"
- " clients for interop needs\n", obd->obd_name);
- simple_truncate(lsi->lsi_srv_mnt->mnt_sb->s_root,
- lsi->lsi_srv_mnt, LAST_RCVD,
- lsd->lsd_client_start);
- last_rcvd_size = lsd->lsd_client_start;
- /** set 2.0 flag to upgrade/downgrade between 1.8 and 2.0 */
- lsd->lsd_feature_compat |= OBD_COMPAT_20;
- }
-
- if (ldd->ldd_flags & LDD_F_IAM_DIR)
- lsd->lsd_feature_incompat |= OBD_INCOMPAT_IAM_DIR;
-
- lsd->lsd_feature_incompat |= OBD_INCOMPAT_FID;
-
- cfs_spin_lock(&mdt->mdt_transno_lock);
- mdt->mdt_last_transno = lsd->lsd_last_transno;
- cfs_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, lsd->lsd_server_size);
- CDEBUG(D_INODE, "%s: per-client data start: %u\n",
- obd->obd_name, lsd->lsd_client_start);
- CDEBUG(D_INODE, "%s: per-client data size: %u\n",
- obd->obd_name, lsd->lsd_client_size);
- CDEBUG(D_INODE, "%s: 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 <= lsd->lsd_client_start ? 0 :
- (last_rcvd_size - lsd->lsd_client_start) /
- lsd->lsd_client_size);
- CDEBUG(D_INODE, "========END DUMPING LAST_RCVD========\n");
-
- if (!lsd->lsd_server_size || !lsd->lsd_client_start ||
- !lsd->lsd_client_size) {
- CERROR("Bad last_rcvd contents!\n");
- GOTO(out, rc = -EINVAL);
- }
-
- rc = mdt_clients_data_init(env, mdt, last_rcvd_size);
- if (rc)
- GOTO(err_client, rc);
-
- cfs_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;
- cfs_spin_unlock(&mdt->mdt_transno_lock);
-
- mdt->mdt_mount_count = mount_count + 1;
- lsd->lsd_mount_count = mdt->mdt_mount_count;
-
- /* save it, so mount count and last_transno is current */
- rc = mdt_server_data_update(env, mdt);
- if (rc)
- GOTO(err_client, rc);
-
- RETURN(0);
-
-err_client:
- class_disconnect_exports(obd);
-out:
- return rc;
-}
-
-static int mdt_server_data_update(const struct lu_env *env,
- struct mdt_device *mdt)
-{
- struct mdt_thread_info *mti;
- struct thandle *th;
- int rc;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- mdt_trans_credit_init(env, mdt, MDT_TXN_LAST_RCVD_WRITE_OP);
- th = mdt_trans_start(env, mdt);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- CDEBUG(D_SUPER, "MDS mount_count is "LPU64", last_transno is "LPU64"\n",
- mdt->mdt_mount_count, mdt->mdt_last_transno);
-
- cfs_spin_lock(&mdt->mdt_transno_lock);
- mdt->mdt_lsd.lsd_last_transno = mdt->mdt_last_transno;
- cfs_spin_unlock(&mdt->mdt_transno_lock);
-
- rc = mdt_last_rcvd_header_write(env, mdt, th);
- mdt_trans_stop(env, mdt, th);
- return rc;
-}
-
-
-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 lsd_client_data *lcd;
- struct lr_server_data *lsd = &mdt->mdt_lsd;
- struct obd_device *obd = mdt2obd_dev(mdt);
- struct thandle *th;
- loff_t off;
- int rc;
- int cl_idx;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- med = &mti->mti_exp->exp_mdt_data;
- lcd = med->med_lcd;
-
- LASSERT(bitmap != NULL);
- if (!strcmp(med->med_lcd->lcd_uuid, obd->obd_uuid.uuid))
- RETURN(0);
-
- /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
- * there's no need for extra complication here
- */
- cfs_spin_lock(&mdt->mdt_client_bitmap_lock);
- cl_idx = cfs_find_first_zero_bit(bitmap, LR_MAX_CLIENTS);
- if (cl_idx >= LR_MAX_CLIENTS ||
- OBD_FAIL_CHECK(OBD_FAIL_MDS_CLIENT_ADD)) {
- CERROR("no room for %u clients - fix LR_MAX_CLIENTS\n",
- cl_idx);
- cfs_spin_unlock(&mdt->mdt_client_bitmap_lock);
- RETURN(-EOVERFLOW);
- }
- cfs_set_bit(cl_idx, bitmap);
- cfs_spin_unlock(&mdt->mdt_client_bitmap_lock);
-
- CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
- cl_idx, med->med_lcd->lcd_uuid);
-
- med->med_lr_idx = cl_idx;
- med->med_lr_off = lsd->lsd_client_start +
- (cl_idx * lsd->lsd_client_size);
- cfs_init_mutex(&med->med_lcd_lock);
-
- LASSERTF(med->med_lr_off > 0, "med_lr_off = %llu\n", med->med_lr_off);
-
- /* Write new client data. */
- off = med->med_lr_off;
-
- if (OBD_FAIL_CHECK(OBD_FAIL_TGT_CLIENT_ADD))
- RETURN(-ENOSPC);
-
- mdt_trans_credit_init(env, mdt, MDT_TXN_LAST_RCVD_WRITE_OP);
-
- th = mdt_trans_start(env, mdt);
- if (IS_ERR(th))
- RETURN(PTR_ERR(th));
-
- /*
- * Until this operations will be committed the sync is needed
- * for this export. This should be done _after_ starting the
- * transaction so that many connecting clients will not bring
- * server down with lots of sync writes.
- */
- mdt_trans_add_cb(th, lut_cb_client, class_export_cb_get(mti->mti_exp));
- cfs_spin_lock(&mti->mti_exp->exp_lock);
- mti->mti_exp->exp_need_sync = 1;
- cfs_spin_unlock(&mti->mti_exp->exp_lock);
-
- rc = mdt_last_rcvd_write(env, mdt, lcd, &off, th);
- CDEBUG(D_INFO, "wrote client lcd at idx %u off %llu (len %u)\n",
- cl_idx, med->med_lr_off, (int)sizeof(*lcd));
- mdt_trans_stop(env, mdt, th);
-
- RETURN(rc);
-}
-
-/* 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.
- */
-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 = mdt2obd_dev(mdt);
- struct lr_server_data *lsd = &mdt->mdt_lsd;
- 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_lcd->lcd_uuid, obd->obd_uuid.uuid))
- RETURN(0);
-
- cfs_spin_lock(&mdt->mdt_client_bitmap_lock);
- if (cfs_test_and_set_bit(cl_idx, bitmap)) {
- CERROR("MDS client %d: bit already set in bitmap!!\n",
- cl_idx);
- LBUG();
- }
- cfs_spin_unlock(&mdt->mdt_client_bitmap_lock);
-
- CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
- cl_idx, med->med_lcd->lcd_uuid);
-
- med->med_lr_idx = cl_idx;
- med->med_lr_off = lsd->lsd_client_start +
- (cl_idx * lsd->lsd_client_size);
- cfs_init_mutex(&med->med_lcd_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)
-{
- struct mdt_thread_info *mti;
- struct mdt_export_data *med;
- struct lsd_client_data *lcd;
- struct obd_device *obd = mdt2obd_dev(mdt);
- struct obd_export *exp;
- struct thandle *th;
- loff_t off;
- int rc = 0;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
-
- exp = mti->mti_exp;
- med = &exp->exp_mdt_data;
- lcd = med->med_lcd;
- if (!lcd)
- RETURN(0);
-
- /* XXX: If lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
- if (!strcmp(lcd->lcd_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 (!cfs_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();
- }
-
- /* Make sure the server's last_transno is up to date.
- * This should be done before zeroing client slot so last_transno will
- * be in server data or in client data in case of failure */
- mdt_server_data_update(env, mdt);
-
- mdt_trans_credit_init(env, mdt, MDT_TXN_LAST_RCVD_WRITE_OP);
- th = mdt_trans_start(env, mdt);
- if (IS_ERR(th))
- GOTO(free, rc = PTR_ERR(th));
-
- cfs_mutex_down(&med->med_lcd_lock);
- memset(lcd->lcd_uuid, 0, sizeof lcd->lcd_uuid);
- rc = mdt_last_rcvd_write(env, mdt, lcd, &off, th);
- cfs_mutex_up(&med->med_lcd_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);
- RETURN(0);
-free:
- return 0;
-}
-
/*
* last_rcvd & last_committed update callbacks
*/
-static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
- struct thandle *th)
-{
- struct mdt_device *mdt = mti->mti_mdt;
- struct ptlrpc_request *req = mdt_info_req(mti);
- struct mdt_export_data *med;
- struct lsd_client_data *lcd;
- loff_t off;
- int err;
- __s32 rc = th->th_result;
-
- ENTRY;
- LASSERT(req);
- LASSERT(req->rq_export);
- LASSERT(mdt);
- med = &req->rq_export->exp_mdt_data;
- LASSERT(med);
-
- cfs_mutex_down(&med->med_lcd_lock);
- lcd = med->med_lcd;
- /* if the export has already been disconnected, we have no last_rcvd slot,
- * update server data with latest transno then */
- if (lcd == NULL) {
- cfs_mutex_up(&med->med_lcd_lock);
- CWARN("commit transaction for disconnected client %s: rc %d\n",
- req->rq_export->exp_client_uuid.uuid, rc);
- err = mdt_last_rcvd_header_write(mti->mti_env, mdt, th);
- RETURN(err);
- }
-
- off = med->med_lr_off;
- LASSERT(ergo(mti->mti_transno == 0, rc != 0));
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
- lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
- if (mti->mti_transno != 0)
- lcd->lcd_last_close_transno = mti->mti_transno;
- lcd->lcd_last_close_xid = req->rq_xid;
- lcd->lcd_last_close_result = rc;
- } else {
- /* VBR: save versions in last_rcvd for reconstruct. */
- __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
- if (pre_versions) {
- lcd->lcd_pre_versions[0] = pre_versions[0];
- lcd->lcd_pre_versions[1] = pre_versions[1];
- lcd->lcd_pre_versions[2] = pre_versions[2];
- lcd->lcd_pre_versions[3] = pre_versions[3];
- }
- if (mti->mti_transno != 0)
- lcd->lcd_last_transno = mti->mti_transno;
- lcd->lcd_last_xid = req->rq_xid;
- lcd->lcd_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; */
- lcd->lcd_last_data = mti->mti_opdata;
- }
-
- 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, lcd, &off, th);
- }
- cfs_mutex_up(&med->med_lcd_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)
-{
- struct mdt_device *mdt = cookie;
-
- param->tp_credits += mdt_trans_credit_get(env, mdt,
- MDT_TXN_LAST_RCVD_WRITE_OP);
- return 0;
-}
-
-/* Set new object versions */
-static void mdt_versions_set(struct mdt_thread_info *info)
-{
- int i;
- for (i = 0; i < PTLRPC_NUM_VERSIONS; i++)
- if (info->mti_mos[i] != NULL)
- mo_version_set(info->mti_env,
- mdt_object_child(info->mti_mos[i]),
- info->mti_transno);
-}
-
-/* Update last_rcvd records with latests transaction data */
+/* 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_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;
- cfs_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);
- }
- } 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;
- }
- cfs_spin_unlock(&mdt->mdt_transno_lock);
- /* sometimes the reply message has not been successfully packed */
- LASSERT(req != NULL && req->rq_repmsg != NULL);
+ struct mdt_thread_info *mti;
- /** VBR: set new versions */
- if (txn->th_result == 0)
- mdt_versions_set(mti);
+ mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
+ LASSERT(mti);
- /* filling reply data */
- CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\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);
- /* save transno for the commit callback */
- txi->txi_transno = mti->mti_transno;
-
- /* add separate commit callback for transaction handling because we need
- * export as parameter */
- mdt_trans_add_cb(txn, lut_cb_last_committed,
- class_export_cb_get(mti->mti_exp));
-
- return mdt_last_rcvd_update(mti, txn);
-}
-
-/* commit callback, need to update last_committed value */
-static int mdt_txn_commit_cb(const struct lu_env *env,
- struct thandle *txn, void *cookie)
-{
- struct mdt_device *mdt = cookie;
- struct mdt_txn_info *txi;
- int i;
-
- txi = lu_context_key_get(&txn->th_ctx, &mdt_txn_key);
-
- /* iterate through all additional callbacks */
- for (i = 0; i < txi->txi_cb_count; i++) {
- txi->txi_cb[i].lut_cb_func(&mdt->mdt_lut, txi->txi_transno,
- txi->txi_cb[i].lut_cb_data, 0);
- }
- return 0;
+ if (mti->mti_has_trans)
+ CDEBUG(D_INFO, "More than one transaction\n");
+ else
+ mti->mti_has_trans = 1;
+ return 0;
}
int mdt_fs_setup(const struct lu_env *env, struct mdt_device *mdt,
- struct obd_device *obd,
- struct lustre_sb_info *lsi)
+ struct obd_device *obd, struct lustre_sb_info *lsi)
{
- struct lu_fid fid;
- struct dt_object *o;
- int rc = 0;
- ENTRY;
+ int rc = 0;
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FS_SETUP))
- RETURN(-ENOENT);
+ ENTRY;
- /* 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;
- mdt->mdt_txn_cb.dtc_tag = LCT_MD_THREAD;
- CFS_INIT_LIST_HEAD(&mdt->mdt_txn_cb.dtc_linkage);
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FS_SETUP))
+ RETURN(-ENOENT);
- dt_txn_callback_add(mdt->mdt_bottom, &mdt->mdt_txn_cb);
+ /* 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_cookie = NULL;
+ mdt->mdt_txn_cb.dtc_tag = LCT_MD_THREAD;
+ INIT_LIST_HEAD(&mdt->mdt_txn_cb.dtc_linkage);
- rc = mdt_server_data_init(env, mdt, lsi);
- if (rc)
- RETURN(rc);
+ dt_txn_callback_add(mdt->mdt_bottom, &mdt->mdt_txn_cb);
- 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);
- } else {
- rc = PTR_ERR(o);
- CERROR("cannot open %s: rc = %d\n", CAPA_KEYS, rc);
- GOTO(disconnect_exports, rc);
- }
- RETURN(0);
-
-put_ck_object:
- lu_object_put(env, &o->do_lu);
- mdt->mdt_ck_obj = NULL;
-disconnect_exports:
- class_disconnect_exports(obd);
- return rc;
+ RETURN(rc);
}
void mdt_fs_cleanup(const struct lu_env *env, struct mdt_device *mdt)
/* 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;
}
/* reconstruction code */
static void mdt_steal_ack_locks(struct ptlrpc_request *req)
{
- struct obd_export *exp = req->rq_export;
- cfs_list_t *tmp;
- struct ptlrpc_reply_state *oldrep;
- struct ptlrpc_service *svc;
- int i;
+ struct ptlrpc_service_part *svcpt;
+ struct obd_export *exp = req->rq_export;
+ struct list_head *tmp;
+ struct ptlrpc_reply_state *rs;
+ int i;
+
+ /* CAVEAT EMPTOR: spinlock order */
+ spin_lock(&exp->exp_lock);
+ list_for_each(tmp, &exp->exp_outstanding_replies) {
+ rs = list_entry(tmp, struct ptlrpc_reply_state,
+ rs_exp_list);
+
+ if (rs->rs_xid != req->rq_xid)
+ continue;
+
+ if (rs->rs_opc != lustre_msg_get_opc(req->rq_reqmsg))
+ CERROR("%s: Resent req xid %llu has mismatched opc: "
+ "new %d old %d\n", exp->exp_obd->obd_name,
+ req->rq_xid, lustre_msg_get_opc(req->rq_reqmsg),
+ rs->rs_opc);
+
+ svcpt = rs->rs_svcpt;
+
+ CDEBUG(D_HA, "Stealing %d locks from rs %p x%lld.t%lld"
+ " o%d NID %s\n",
+ rs->rs_nlocks, rs,
+ rs->rs_xid, rs->rs_transno, rs->rs_opc,
+ obd_export_nid2str(exp));
+
+ spin_lock(&svcpt->scp_rep_lock);
+ list_del_init(&rs->rs_exp_list);
+
+ spin_lock(&rs->rs_lock);
+ for (i = 0; i < rs->rs_nlocks; i++)
+ ptlrpc_save_lock(req, &rs->rs_locks[i],
+ rs->rs_modes[i], rs->rs_no_ack,
+ rs->rs_convert_lock);
+ rs->rs_nlocks = 0;
+
+ DEBUG_REQ(D_HA, req, "stole locks for");
+ ptlrpc_schedule_difficult_reply(rs);
+ spin_unlock(&rs->rs_lock);
+
+ spin_unlock(&svcpt->scp_rep_lock);
+ break;
+ }
+ spin_unlock(&exp->exp_lock);
+
+ /* if exp_disconnected, decref stolen locks */
+ if (exp->exp_disconnected) {
+ rs = req->rq_reply_state;
+
+ for (i = 0; i < rs->rs_nlocks; i++)
+ ldlm_lock_decref(&rs->rs_locks[i], rs->rs_modes[i]);
+
+ rs->rs_nlocks = 0;
+ }
+}
- /* CAVEAT EMPTOR: spinlock order */
- cfs_spin_lock(&exp->exp_lock);
- cfs_list_for_each (tmp, &exp->exp_outstanding_replies) {
- oldrep = cfs_list_entry(tmp, struct ptlrpc_reply_state,
- rs_exp_list);
+__u64 mdt_req_from_lrd(struct ptlrpc_request *req,
+ struct tg_reply_data *trd)
+{
+ struct lsd_reply_data *lrd;
- if (oldrep->rs_xid != req->rq_xid)
- continue;
+ LASSERT(trd != NULL);
+ lrd = &trd->trd_reply;
- 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);
+ DEBUG_REQ(D_HA, req, "restoring transno %lld/status %d",
+ lrd->lrd_transno, lrd->lrd_result);
- svc = oldrep->rs_service;
- cfs_spin_lock (&svc->srv_lock);
+ req->rq_transno = lrd->lrd_transno;
+ req->rq_status = lrd->lrd_result;
- cfs_list_del_init (&oldrep->rs_exp_list);
+ lustre_msg_set_versions(req->rq_repmsg, trd->trd_pre_versions);
- CWARN("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));
+ 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);
- 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;
+ DEBUG_REQ(D_RPCTRACE, req, "restoring transno %lld/status %d",
+ req->rq_transno, req->rq_status);
- DEBUG_REQ(D_HA, req, "stole locks for");
- cfs_spin_lock(&oldrep->rs_lock);
- ptlrpc_schedule_difficult_reply (oldrep);
- cfs_spin_unlock(&oldrep->rs_lock);
+ mdt_steal_ack_locks(req);
- cfs_spin_unlock (&svc->srv_lock);
- break;
- }
- cfs_spin_unlock(&exp->exp_lock);
+ return lrd->lrd_data;
}
-/**
- * VBR: restore versions
- */
-void mdt_vbr_reconstruct(struct ptlrpc_request *req,
- struct lsd_client_data *lcd)
-{
- __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);
-}
-void mdt_req_from_lcd(struct ptlrpc_request *req,
- struct lsd_client_data *lcd)
+void mdt_reconstruct_generic(struct mdt_thread_info *mti,
+ struct mdt_lock_handle *lhc)
{
- DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
- lcd->lcd_last_transno, lcd->lcd_last_result);
-
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
- 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 {
- req->rq_transno = lcd->lcd_last_transno;
- req->rq_status = lcd->lcd_last_result;
- mdt_vbr_reconstruct(req, lcd);
- }
- 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);
+ struct ptlrpc_request *req = mdt_info_req(mti);
- mdt_steal_ack_locks(req);
+ mdt_req_from_lrd(req, mti->mti_reply_data);
+ return;
}
-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_lcd(req, med->med_lcd);
+ 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 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 *child;
- struct mdt_body *body;
- int rc;
-
- mdt_req_from_lcd(req, med->med_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);
- if (IS_ERR(child)) {
- rc = PTR_ERR(child);
- LCONSOLE_WARN("Child "DFID" lookup error %d."
- " Evicting client %s with export %s.\n",
- PFID(mdt_object_fid(child)), rc,
- obd_uuid2str(&exp->exp_client_uuid),
- obd_export_nid2str(exp));
- mdt_export_evict(exp);
- EXIT;
- return;
- }
+ struct ptlrpc_request *req = mdt_info_req(mti);
+ struct obd_export *exp = req->rq_export;
+ struct mdt_device *mdt = mti->mti_mdt;
+ struct mdt_object *child;
+ struct mdt_body *body;
+ int rc;
+
+ mdt_req_from_lrd(req, mti->mti_reply_data);
+ 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);
+ 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 = 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);
+ 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 ptlrpc_request *req = mdt_info_req(mti);
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_lcd(req, med->med_lcd);
- if (req->rq_status)
- return;
+ mdt_req_from_lrd(req, mti->mti_reply_data);
+ if (req->rq_status)
+ return;
body = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
obj = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid1);
- if (IS_ERR(obj)) {
- int rc = PTR_ERR(obj);
- LCONSOLE_WARN(""DFID" lookup error %d."
- " Evicting client %s with export %s.\n",
- PFID(mdt_object_fid(obj)), rc,
- obd_uuid2str(&exp->exp_client_uuid),
- obd_export_nid2str(exp));
- mdt_export_evict(exp);
- EXIT;
- return;
- }
+ 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;
- mo_attr_get(mti->mti_env, mdt_object_child(obj), &mti->mti_attr);
+
+ 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->ioepoch = obj->mot_ioepoch;
- cfs_spin_lock(&med->med_open_lock);
- cfs_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);
- cfs_spin_unlock(&med->med_open_lock);
- repbody->handle.cookie = mfd->mfd_handle.h_cookie;
- }
- mdt_object_put(mti->mti_env, obj);
+ mdt_object_put(mti->mti_env, obj);
}
typedef void (*mdt_reconstructor)(struct mdt_thread_info *mti,
[REINT_UNLINK] = mdt_reconstruct_generic,
[REINT_RENAME] = mdt_reconstruct_generic,
[REINT_OPEN] = mdt_reconstruct_open,
- [REINT_SETXATTR] = mdt_reconstruct_generic
+ [REINT_SETXATTR] = mdt_reconstruct_generic,
+ [REINT_RMENTRY] = mdt_reconstruct_generic,
+ [REINT_MIGRATE] = mdt_reconstruct_generic
};
void mdt_reconstruct(struct mdt_thread_info *mti,
struct mdt_lock_handle *lhc)
{
+ mdt_reconstructor reconst;
ENTRY;
- reconstructors[mti->mti_rr.rr_opcode](mti, lhc);
+ LASSERT(mti->mti_rr.rr_opcode < REINT_MAX &&
+ (reconst = reconstructors[mti->mti_rr.rr_opcode]) != NULL);
+ reconst(mti, lhc);
EXIT;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff