* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include "tgt_internal.h"
+
+/* Allocate a bitmap for a chunk of reply data slots */
+static int tgt_bitmap_chunk_alloc(struct lu_target *lut, int chunk)
+{
+ unsigned long *bm;
+
+ OBD_ALLOC_LARGE(bm, BITS_TO_LONGS(LUT_REPLY_SLOTS_PER_CHUNK) *
+ sizeof(long));
+ if (bm == NULL)
+ return -ENOMEM;
+
+ spin_lock(&lut->lut_client_bitmap_lock);
+
+ if (lut->lut_reply_bitmap[chunk] != NULL) {
+ /* someone else already allocated the bitmap for this chunk */
+ spin_unlock(&lut->lut_client_bitmap_lock);
+ OBD_FREE_LARGE(bm, BITS_TO_LONGS(LUT_REPLY_SLOTS_PER_CHUNK) *
+ sizeof(long));
+ return 0;
+ }
+
+ lut->lut_reply_bitmap[chunk] = bm;
+
+ spin_unlock(&lut->lut_client_bitmap_lock);
+
+ return 0;
+}
+
+/* Look for an available reply data slot in the bitmap
+ * of the target @lut
+ * Allocate bitmap chunk when first used
+ * XXX algo could be improved if this routine limits performance
+ */
+static int tgt_find_free_reply_slot(struct lu_target *lut)
+{
+ unsigned long *bmp;
+ int chunk = 0;
+ int rc;
+ int b;
+
+ for (chunk = 0; chunk < LUT_REPLY_SLOTS_MAX_CHUNKS; chunk++) {
+ /* allocate the bitmap chunk if necessary */
+ if (unlikely(lut->lut_reply_bitmap[chunk] == NULL)) {
+ rc = tgt_bitmap_chunk_alloc(lut, chunk);
+ if (rc != 0)
+ return rc;
+ }
+ bmp = lut->lut_reply_bitmap[chunk];
+
+ /* look for an available slot in this chunk */
+ do {
+ b = find_first_zero_bit(bmp, LUT_REPLY_SLOTS_PER_CHUNK);
+ if (b >= LUT_REPLY_SLOTS_PER_CHUNK)
+ break;
+
+ /* found one */
+ if (test_and_set_bit(b, bmp) == 0)
+ return chunk * LUT_REPLY_SLOTS_PER_CHUNK + b;
+ } while (true);
+ }
+
+ return -ENOSPC;
+}
+
+/* Mark the reply data slot @idx 'used' in the corresponding bitmap chunk
+ * of the target @lut
+ * Allocate the bitmap chunk if necessary
+ */
+static int tgt_set_reply_slot(struct lu_target *lut, int idx)
+{
+ int chunk;
+ int b;
+ int rc;
+
+ chunk = idx / LUT_REPLY_SLOTS_PER_CHUNK;
+ b = idx % LUT_REPLY_SLOTS_PER_CHUNK;
+
+ LASSERT(chunk < LUT_REPLY_SLOTS_MAX_CHUNKS);
+ LASSERT(b < LUT_REPLY_SLOTS_PER_CHUNK);
+
+ /* allocate the bitmap chunk if necessary */
+ if (unlikely(lut->lut_reply_bitmap[chunk] == NULL)) {
+ rc = tgt_bitmap_chunk_alloc(lut, chunk);
+ if (rc != 0)
+ return rc;
+ }
+
+ /* mark the slot 'used' in this chunk */
+ if (test_and_set_bit(b, lut->lut_reply_bitmap[chunk]) != 0) {
+ CERROR("%s: slot %d already set in bitmap\n",
+ tgt_name(lut), idx);
+ return -EALREADY;
+ }
+
+ return 0;
+}
+
+
+/* Mark the reply data slot @idx 'unused' in the corresponding bitmap chunk
+ * of the target @lut
+ */
+static int tgt_clear_reply_slot(struct lu_target *lut, int idx)
+{
+ int chunk;
+ int b;
+
+ chunk = idx / LUT_REPLY_SLOTS_PER_CHUNK;
+ b = idx % LUT_REPLY_SLOTS_PER_CHUNK;
+
+ LASSERT(chunk < LUT_REPLY_SLOTS_MAX_CHUNKS);
+ LASSERT(b < LUT_REPLY_SLOTS_PER_CHUNK);
+
+ if (lut->lut_reply_bitmap[chunk] == NULL) {
+ CERROR("%s: slot %d not allocated\n",
+ tgt_name(lut), idx);
+ return -ENOENT;
+ }
+
+ if (test_and_clear_bit(b, lut->lut_reply_bitmap[chunk]) == 0) {
+ CERROR("%s: slot %d already clear in bitmap\n",
+ tgt_name(lut), idx);
+ return -EALREADY;
+ }
+
+ return 0;
+}
+
+
+/* Read header of reply_data file of target @tgt into structure @lrh */
+static int tgt_reply_header_read(const struct lu_env *env,
+ struct lu_target *tgt,
+ struct lsd_reply_header *lrh)
+{
+ int rc;
+ struct lsd_reply_header buf;
+ struct tgt_thread_info *tti = tgt_th_info(env);
+
+ tti->tti_off = 0;
+ tti->tti_buf.lb_buf = &buf;
+ tti->tti_buf.lb_len = sizeof(buf);
+
+ rc = dt_record_read(env, tgt->lut_reply_data, &tti->tti_buf,
+ &tti->tti_off);
+ if (rc != 0)
+ return rc;
+
+ lrh->lrh_magic = le32_to_cpu(buf.lrh_magic);
+ lrh->lrh_header_size = le32_to_cpu(buf.lrh_header_size);
+ lrh->lrh_reply_size = le32_to_cpu(buf.lrh_reply_size);
+
+ CDEBUG(D_HA, "%s: read %s header. magic=0x%08x "
+ "header_size=%d reply_size=%d\n",
+ tgt->lut_obd->obd_name, REPLY_DATA,
+ lrh->lrh_magic, lrh->lrh_header_size, lrh->lrh_reply_size);
+
+ return 0;
+}
+
+/* Write header into replay_data file of target @tgt from structure @lrh */
+static int tgt_reply_header_write(const struct lu_env *env,
+ struct lu_target *tgt,
+ struct lsd_reply_header *lrh)
+{
+ int rc;
+ struct lsd_reply_header buf;
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ struct thandle *th;
+ struct dt_object *dto;
+
+ CDEBUG(D_HA, "%s: write %s header. magic=0x%08x "
+ "header_size=%d reply_size=%d\n",
+ tgt->lut_obd->obd_name, REPLY_DATA,
+ lrh->lrh_magic, lrh->lrh_header_size, lrh->lrh_reply_size);
+
+ buf.lrh_magic = cpu_to_le32(lrh->lrh_magic);
+ buf.lrh_header_size = cpu_to_le32(lrh->lrh_header_size);
+ buf.lrh_reply_size = cpu_to_le32(lrh->lrh_reply_size);
+
+ th = dt_trans_create(env, tgt->lut_bottom);
+ if (IS_ERR(th))
+ return PTR_ERR(th);
+ th->th_sync = 1;
+
+ tti->tti_off = 0;
+ tti->tti_buf.lb_buf = &buf;
+ tti->tti_buf.lb_len = sizeof(buf);
+
+ rc = dt_declare_record_write(env, tgt->lut_reply_data,
+ &tti->tti_buf, tti->tti_off, th);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = dt_trans_start(env, tgt->lut_bottom, th);
+ if (rc)
+ GOTO(out, rc);
+
+ dto = dt_object_locate(tgt->lut_reply_data, th->th_dev);
+ rc = dt_record_write(env, dto, &tti->tti_buf, &tti->tti_off, th);
+out:
+ dt_trans_stop(env, tgt->lut_bottom, th);
+ return rc;
+}
+
+/* Write the reply data @lrd into reply_data file of target @tgt
+ * at offset @off
+ */
+static int tgt_reply_data_write(const struct lu_env *env, struct lu_target *tgt,
+ struct lsd_reply_data *lrd, loff_t off,
+ struct thandle *th)
+{
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ struct dt_object *dto;
+ struct lsd_reply_data *buf = &tti->tti_lrd;
+
+ lrd->lrd_result = ptlrpc_status_hton(lrd->lrd_result);
+
+ buf->lrd_transno = cpu_to_le64(lrd->lrd_transno);
+ buf->lrd_xid = cpu_to_le64(lrd->lrd_xid);
+ buf->lrd_data = cpu_to_le64(lrd->lrd_data);
+ buf->lrd_result = cpu_to_le32(lrd->lrd_result);
+ buf->lrd_client_gen = cpu_to_le32(lrd->lrd_client_gen);
+
+ lrd->lrd_result = ptlrpc_status_ntoh(lrd->lrd_result);
+
+ tti->tti_off = off;
+ tti->tti_buf.lb_buf = buf;
+ tti->tti_buf.lb_len = sizeof(*buf);
+
+ dto = dt_object_locate(tgt->lut_reply_data, th->th_dev);
+ return dt_record_write(env, dto, &tti->tti_buf, &tti->tti_off, th);
+}
+
+/* Read the reply data from reply_data file of target @tgt at offset @off
+ * into structure @lrd
+ */
+static int tgt_reply_data_read(const struct lu_env *env, struct lu_target *tgt,
+ struct lsd_reply_data *lrd, loff_t off)
+{
+ int rc;
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ struct lsd_reply_data *buf = &tti->tti_lrd;
+
+ tti->tti_off = off;
+ tti->tti_buf.lb_buf = buf;
+ tti->tti_buf.lb_len = sizeof(*buf);
+
+ rc = dt_record_read(env, tgt->lut_reply_data, &tti->tti_buf,
+ &tti->tti_off);
+ if (rc != 0)
+ return rc;
+
+ lrd->lrd_transno = le64_to_cpu(buf->lrd_transno);
+ lrd->lrd_xid = le64_to_cpu(buf->lrd_xid);
+ lrd->lrd_data = le64_to_cpu(buf->lrd_data);
+ lrd->lrd_result = le32_to_cpu(buf->lrd_result);
+ lrd->lrd_client_gen = le32_to_cpu(buf->lrd_client_gen);
+
+ return 0;
+}
+
+
+/* Free the in-memory reply data structure @trd and release
+ * the corresponding slot in the reply_data file of target @lut
+ * Called with ted_lcd_lock held
+ */
+static void tgt_free_reply_data(struct lu_target *lut,
+ struct tg_export_data *ted,
+ struct tg_reply_data *trd)
+{
+ CDEBUG(D_TRACE, "%s: free reply data %p: xid %llu, transno %llu, "
+ "client gen %u, slot idx %d\n",
+ lut == NULL ? "" : tgt_name(lut), trd, trd->trd_reply.lrd_xid,
+ trd->trd_reply.lrd_transno, trd->trd_reply.lrd_client_gen,
+ trd->trd_index);
+
+ LASSERT(mutex_is_locked(&ted->ted_lcd_lock));
+
+ list_del(&trd->trd_list);
+ ted->ted_reply_cnt--;
+ if (lut != NULL)
+ tgt_clear_reply_slot(lut, trd->trd_index);
+ OBD_FREE_PTR(trd);
+}
+
+/* Release the reply data @trd from target @lut
+ * The reply data with the highest transno for this export
+ * is retained to ensure correctness of target recovery
+ * Called with ted_lcd_lock held
+ */
+static void tgt_release_reply_data(struct lu_target *lut,
+ struct tg_export_data *ted,
+ struct tg_reply_data *trd)
+{
+ CDEBUG(D_TRACE, "%s: release reply data %p: xid %llu, transno %llu, "
+ "client gen %u, slot idx %d\n",
+ lut == NULL ? "" : tgt_name(lut), trd, trd->trd_reply.lrd_xid,
+ trd->trd_reply.lrd_transno, trd->trd_reply.lrd_client_gen,
+ trd->trd_index);
+
+ LASSERT(mutex_is_locked(&ted->ted_lcd_lock));
+
+ /* Do not free the reply data corresponding to the
+ * highest transno of this export.
+ * This ensures on-disk reply data is kept and
+ * last committed transno can be restored from disk in case
+ * of target recovery
+ */
+ if (trd->trd_reply.lrd_transno == ted->ted_lcd->lcd_last_transno) {
+ /* free previous retained reply */
+ if (ted->ted_reply_last != NULL)
+ tgt_free_reply_data(lut, ted, ted->ted_reply_last);
+ /* retain the reply */
+ list_del_init(&trd->trd_list);
+ ted->ted_reply_last = trd;
+ } else {
+ tgt_free_reply_data(lut, ted, trd);
+ }
+}
+
static inline struct lu_buf *tti_buf_lsd(struct tgt_thread_info *tti)
{
tti->tti_buf.lb_buf = &tti->tti_lsd;
ENTRY;
LASSERT(exp != exp->exp_obd->obd_self_export);
+ spin_lock_init(&exp->exp_target_data.ted_nodemap_lock);
+ INIT_LIST_HEAD(&exp->exp_target_data.ted_nodemap_member);
+
OBD_ALLOC_PTR(exp->exp_target_data.ted_lcd);
if (exp->exp_target_data.ted_lcd == NULL)
RETURN(-ENOMEM);
/* Mark that slot is not yet valid, 0 doesn't work here */
exp->exp_target_data.ted_lr_idx = -1;
+ INIT_LIST_HEAD(&exp->exp_target_data.ted_reply_list);
+ mutex_init(&exp->exp_target_data.ted_lcd_lock);
RETURN(0);
}
EXPORT_SYMBOL(tgt_client_alloc);
{
struct tg_export_data *ted = &exp->exp_target_data;
struct lu_target *lut = class_exp2tgt(exp);
+ struct tg_reply_data *trd, *tmp;
LASSERT(exp != exp->exp_obd->obd_self_export);
+ /* free reply data */
+ mutex_lock(&ted->ted_lcd_lock);
+ list_for_each_entry_safe(trd, tmp, &ted->ted_reply_list, trd_list) {
+ tgt_release_reply_data(lut, ted, trd);
+ }
+ if (ted->ted_reply_last != NULL) {
+ tgt_free_reply_data(lut, ted, ted->ted_reply_last);
+ ted->ted_reply_last = NULL;
+ }
+ mutex_unlock(&ted->ted_lcd_lock);
+
+ if (!hlist_unhashed(&exp->exp_gen_hash))
+ cfs_hash_del(exp->exp_obd->obd_gen_hash,
+ &ted->ted_lcd->lcd_generation,
+ &exp->exp_gen_hash);
+
OBD_FREE_PTR(ted->ted_lcd);
ted->ted_lcd = NULL;
- /* Slot may be not yet assigned */
- if (ted->ted_lr_idx < 0)
+ /* Target may have been freed (see LU-7430)
+ * Slot may be not yet assigned */
+ if (exp->exp_obd->u.obt.obt_magic != OBT_MAGIC ||
+ ted->ted_lr_idx < 0)
return;
+
/* Clear bit when lcd is freed */
- LASSERT(lut->lut_client_bitmap);
+ LASSERT(lut && lut->lut_client_bitmap);
if (!test_and_clear_bit(ted->ted_lr_idx, lut->lut_client_bitmap)) {
CERROR("%s: client %u bit already clear in bitmap\n",
exp->exp_obd->obd_name, ted->ted_lr_idx);
LBUG();
}
+
+ if (tgt_is_multimodrpcs_client(exp) && !exp->exp_obd->obd_stopping)
+ atomic_dec(&lut->lut_num_clients);
}
EXPORT_SYMBOL(tgt_client_free);
lcd->lcd_last_close_result, rc);
return rc;
}
-EXPORT_SYMBOL(tgt_client_data_read);
int tgt_client_data_write(const struct lu_env *env, struct lu_target *tgt,
struct lsd_client_data *lcd, loff_t *off,
struct thandle *th)
{
struct tgt_thread_info *tti = tgt_th_info(env);
+ struct dt_object *dto;
lcd->lcd_last_result = ptlrpc_status_hton(lcd->lcd_last_result);
lcd->lcd_last_close_result =
lcd_cpu_to_le(lcd, &tti->tti_lcd);
tti_buf_lcd(tti);
- return dt_record_write(env, tgt->lut_last_rcvd, &tti->tti_buf, off, th);
+ dto = dt_object_locate(tgt->lut_last_rcvd, th->th_dev);
+ return dt_record_write(env, dto, &tti->tti_buf, off, th);
}
-EXPORT_SYMBOL(tgt_client_data_write);
/**
* Update client data in last_rcvd
*/
-int tgt_client_data_update(const struct lu_env *env, struct obd_export *exp)
+static int tgt_client_data_update(const struct lu_env *env,
+ struct obd_export *exp)
{
struct tg_export_data *ted = &exp->exp_target_data;
struct lu_target *tgt = class_exp2tgt(exp);
ENTRY;
+ if (unlikely(tgt == NULL)) {
+ CDEBUG(D_ERROR, "%s: No target for connected export\n",
+ class_exp2obd(exp)->obd_name);
+ RETURN(-EINVAL);
+ }
+
th = dt_trans_create(env, tgt->lut_bottom);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
tti_buf_lcd(tti);
+ mutex_lock(&ted->ted_lcd_lock);
rc = dt_declare_record_write(env, tgt->lut_last_rcvd,
&tti->tti_buf,
ted->ted_lr_off, th);
rc = tgt_client_data_write(env, tgt, ted->ted_lcd, &tti->tti_off, th);
EXIT;
out:
+ mutex_unlock(&ted->ted_lcd_lock);
dt_trans_stop(env, tgt->lut_bottom, th);
CDEBUG(D_INFO, "%s: update last_rcvd client data for UUID = %s, "
"last_transno = "LPU64": rc = %d\n", tgt->lut_obd->obd_name,
tgt->lut_lsd.lsd_uuid, tgt->lut_lsd.lsd_last_transno, rc);
return rc;
}
-EXPORT_SYMBOL(tgt_server_data_read);
int tgt_server_data_write(const struct lu_env *env, struct lu_target *tgt,
struct thandle *th)
{
struct tgt_thread_info *tti = tgt_th_info(env);
+ struct dt_object *dto;
int rc;
ENTRY;
tti_buf_lsd(tti);
lsd_cpu_to_le(&tgt->lut_lsd, &tti->tti_lsd);
- rc = dt_record_write(env, tgt->lut_last_rcvd, &tti->tti_buf,
- &tti->tti_off, th);
+ dto = dt_object_locate(tgt->lut_last_rcvd, th->th_dev);
+ rc = dt_record_write(env, dto, &tti->tti_buf, &tti->tti_off, th);
CDEBUG(D_INFO, "%s: write last_rcvd server data for UUID = %s, "
"last_transno = "LPU64": rc = %d\n", tgt->lut_obd->obd_name,
RETURN(rc);
}
-EXPORT_SYMBOL(tgt_server_data_write);
/**
* Update server data in last_rcvd
if (rc)
GOTO(cleanup, rc);
- rc = dt_punch(env, dt, size, OBD_OBJECT_EOF, th, BYPASS_CAPA);
+ rc = dt_punch(env, dt, size, OBD_OBJECT_EOF, th);
if (rc == 0)
- rc = dt_attr_set(env, dt, &attr, th, BYPASS_CAPA);
+ rc = dt_attr_set(env, dt, &attr, th);
cleanup:
dt_trans_stop(env, tgt->lut_bottom, th);
RETURN(rc);
}
-EXPORT_SYMBOL(tgt_truncate_last_rcvd);
-void tgt_client_epoch_update(const struct lu_env *env, struct obd_export *exp)
+static void tgt_client_epoch_update(const struct lu_env *env,
+ struct obd_export *exp)
{
struct lsd_client_data *lcd = exp->exp_target_data.ted_lcd;
struct lu_target *tgt = class_exp2tgt(exp);
- LASSERT(tgt->lut_bottom);
+ LASSERT(tgt && tgt->lut_bottom);
/** VBR: set client last_epoch to current epoch */
if (lcd->lcd_last_epoch >= tgt->lut_lsd.lsd_start_epoch)
return;
struct lu_env env;
struct ptlrpc_request *req;
__u32 start_epoch;
- cfs_list_t client_list;
+ struct list_head client_list;
int rc;
if (tgt->lut_obd->obd_stopping)
tgt->lut_lsd.lsd_start_epoch = start_epoch;
spin_unlock(&tgt->lut_translock);
- CFS_INIT_LIST_HEAD(&client_list);
+ INIT_LIST_HEAD(&client_list);
/**
* The recovery is not yet finished and final queue can still be updated
* with resend requests. Move final list to separate one for processing
*/
spin_lock(&tgt->lut_obd->obd_recovery_task_lock);
- cfs_list_splice_init(&tgt->lut_obd->obd_final_req_queue, &client_list);
+ list_splice_init(&tgt->lut_obd->obd_final_req_queue, &client_list);
spin_unlock(&tgt->lut_obd->obd_recovery_task_lock);
/**
* go through list of exports participated in recovery and
* set new epoch for them
*/
- cfs_list_for_each_entry(req, &client_list, rq_list) {
+ list_for_each_entry(req, &client_list, rq_list) {
LASSERT(!req->rq_export->exp_delayed);
if (!req->rq_export->exp_vbr_failed)
tgt_client_epoch_update(&env, req->rq_export);
}
/** return list back at once */
spin_lock(&tgt->lut_obd->obd_recovery_task_lock);
- cfs_list_splice_init(&client_list, &tgt->lut_obd->obd_final_req_queue);
+ list_splice_init(&client_list, &tgt->lut_obd->obd_final_req_queue);
spin_unlock(&tgt->lut_obd->obd_recovery_task_lock);
+
+ /** Clear MULTI RPCS incompatibility flag if
+ * - target is MDT and
+ * - there is no client to recover or the recovery was aborted
+ */
+ if (!strncmp(tgt->lut_obd->obd_type->typ_name, LUSTRE_MDT_NAME, 3) &&
+ (tgt->lut_obd->obd_max_recoverable_clients == 0 ||
+ tgt->lut_obd->obd_abort_recovery))
+ tgt->lut_lsd.lsd_feature_incompat &= ~OBD_INCOMPAT_MULTI_RPCS;
+
/** update server epoch */
tgt_server_data_update(&env, tgt, 1);
lu_env_fini(&env);
}
-EXPORT_SYMBOL(tgt_boot_epoch_update);
/**
- * commit callback, need to update last_commited value
+ * commit callback, need to update last_committed value
*/
struct tgt_last_committed_callback {
struct dt_txn_commit_cb llcc_cb;
__u64 llcc_transno;
};
-void tgt_cb_last_committed(struct lu_env *env, struct thandle *th,
- struct dt_txn_commit_cb *cb, int err)
+static void tgt_cb_last_committed(struct lu_env *env, struct thandle *th,
+ struct dt_txn_commit_cb *cb, int err)
{
struct tgt_last_committed_callback *ccb;
ccb = container_of0(cb, struct tgt_last_committed_callback, llcc_cb);
+ LASSERT(ccb->llcc_exp);
LASSERT(ccb->llcc_tgt != NULL);
LASSERT(ccb->llcc_exp->exp_obd == ccb->llcc_tgt->lut_obd);
+ /* Fast path w/o spinlock, if exp_last_committed was updated
+ * with higher transno, no need to take spinlock and check,
+ * also no need to update obd_last_committed. */
+ if (ccb->llcc_transno <= ccb->llcc_exp->exp_last_committed)
+ goto out;
spin_lock(&ccb->llcc_tgt->lut_translock);
if (ccb->llcc_transno > ccb->llcc_tgt->lut_obd->obd_last_committed)
ccb->llcc_tgt->lut_obd->obd_last_committed = ccb->llcc_transno;
- LASSERT(ccb->llcc_exp);
if (ccb->llcc_transno > ccb->llcc_exp->exp_last_committed) {
ccb->llcc_exp->exp_last_committed = ccb->llcc_transno;
spin_unlock(&ccb->llcc_tgt->lut_translock);
+
ptlrpc_commit_replies(ccb->llcc_exp);
+ tgt_cancel_slc_locks(ccb->llcc_transno);
} else {
spin_unlock(&ccb->llcc_tgt->lut_translock);
}
+out:
class_export_cb_put(ccb->llcc_exp);
if (ccb->llcc_transno)
CDEBUG(D_HA, "%s: transno "LPD64" is committed\n",
dcb = &ccb->llcc_cb;
dcb->dcb_func = tgt_cb_last_committed;
- CFS_INIT_LIST_HEAD(&dcb->dcb_linkage);
- strncpy(dcb->dcb_name, "tgt_cb_last_committed", MAX_COMMIT_CB_STR_LEN);
- dcb->dcb_name[MAX_COMMIT_CB_STR_LEN - 1] = '\0';
+ INIT_LIST_HEAD(&dcb->dcb_linkage);
+ strlcpy(dcb->dcb_name, "tgt_cb_last_committed", sizeof(dcb->dcb_name));
rc = dt_trans_cb_add(th, dcb);
if (rc) {
return rc;
}
-EXPORT_SYMBOL(tgt_last_commit_cb_add);
struct tgt_new_client_callback {
struct dt_txn_commit_cb lncc_cb;
struct obd_export *lncc_exp;
};
-void tgt_cb_new_client(struct lu_env *env, struct thandle *th,
- struct dt_txn_commit_cb *cb, int err)
+static void tgt_cb_new_client(struct lu_env *env, struct thandle *th,
+ struct dt_txn_commit_cb *cb, int err)
{
struct tgt_new_client_callback *ccb;
ccb->lncc_exp->exp_client_uuid.uuid);
spin_lock(&ccb->lncc_exp->exp_lock);
- /* XXX: Currently, we use per-export based sync/async policy for
- * the update via OUT RPC, it is coarse-grained policy, and
- * will be changed as per-request based by DNE II patches. */
- if (!ccb->lncc_exp->exp_keep_sync)
- ccb->lncc_exp->exp_need_sync = 0;
+
+ ccb->lncc_exp->exp_need_sync = 0;
spin_unlock(&ccb->lncc_exp->exp_lock);
class_export_cb_put(ccb->lncc_exp);
dcb = &ccb->lncc_cb;
dcb->dcb_func = tgt_cb_new_client;
- CFS_INIT_LIST_HEAD(&dcb->dcb_linkage);
- strncpy(dcb->dcb_name, "tgt_cb_new_client", MAX_COMMIT_CB_STR_LEN);
- dcb->dcb_name[MAX_COMMIT_CB_STR_LEN - 1] = '\0';
+ INIT_LIST_HEAD(&dcb->dcb_linkage);
+ strlcpy(dcb->dcb_name, "tgt_cb_new_client", sizeof(dcb->dcb_name));
rc = dt_trans_cb_add(th, dcb);
if (rc) {
ENTRY;
- LASSERT(tgt->lut_client_bitmap != NULL);
+ LASSERT(tgt && tgt->lut_client_bitmap != NULL);
if (!strcmp(ted->ted_lcd->lcd_uuid, tgt->lut_obd->obd_uuid.uuid))
RETURN(0);
- mutex_init(&ted->ted_lcd_lock);
-
if (exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT)
RETURN(0);
goto repeat;
}
- CDEBUG(D_INFO, "%s: client at idx %d with UUID '%s' added\n",
- tgt->lut_obd->obd_name, idx, ted->ted_lcd->lcd_uuid);
-
ted->ted_lr_idx = idx;
ted->ted_lr_off = tgt->lut_lsd.lsd_client_start +
idx * tgt->lut_lsd.lsd_client_size;
LASSERTF(ted->ted_lr_off > 0, "ted_lr_off = %llu\n", ted->ted_lr_off);
- CDEBUG(D_INFO, "%s: new client at index %d (%llu) with UUID '%s'\n",
+ if (tgt_is_multimodrpcs_client(exp)) {
+ /* Set MULTI RPCS incompatibility flag to prevent previous
+ * Lustre versions to mount a target with reply_data file */
+ atomic_inc(&tgt->lut_num_clients);
+ if (!(tgt->lut_lsd.lsd_feature_incompat &
+ OBD_INCOMPAT_MULTI_RPCS)) {
+ tgt->lut_lsd.lsd_feature_incompat |=
+ OBD_INCOMPAT_MULTI_RPCS;
+ rc = tgt_server_data_update(env, tgt, 1);
+ if (rc < 0) {
+ CERROR("%s: unable to set MULTI RPCS "
+ "incompatibility flag\n",
+ exp->exp_obd->obd_name);
+ RETURN(rc);
+ }
+ }
+
+ /* assign client slot generation */
+ ted->ted_lcd->lcd_generation =
+ atomic_inc_return(&tgt->lut_client_generation);
+ } else {
+ ted->ted_lcd->lcd_generation = 0;
+ }
+
+ CDEBUG(D_INFO, "%s: new client at index %d (%llu) with UUID '%s' "
+ "generation %d\n",
tgt->lut_obd->obd_name, ted->ted_lr_idx, ted->ted_lr_off,
- ted->ted_lcd->lcd_uuid);
+ ted->ted_lcd->lcd_uuid, ted->ted_lcd->lcd_generation);
if (OBD_FAIL_CHECK(OBD_FAIL_TGT_CLIENT_ADD))
RETURN(-ENOSPC);
}
EXPORT_SYMBOL(tgt_client_new);
-/* 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.
+/* Add an existing client to the MDS in-memory state based on
+ * a client that was previously found in the last_rcvd file and
+ * already has an assigned slot (idx >= 0).
*
* It should not be possible to fail adding an existing client - otherwise
* mdt_init_server_data() callsite needs to be fixed.
ENTRY;
- LASSERT(tgt->lut_client_bitmap != NULL);
+ LASSERT(tgt && tgt->lut_client_bitmap != NULL);
LASSERTF(idx >= 0, "%d\n", idx);
if (!strcmp(ted->ted_lcd->lcd_uuid, tgt->lut_obd->obd_uuid.uuid) ||
tgt->lut_obd->obd_name, idx);
LBUG();
}
+ atomic_inc(&tgt->lut_num_clients);
- CDEBUG(D_INFO, "%s: client at idx %d with UUID '%s' added\n",
- tgt->lut_obd->obd_name, idx, ted->ted_lcd->lcd_uuid);
+ CDEBUG(D_INFO, "%s: client at idx %d with UUID '%s' added, "
+ "generation %d\n",
+ tgt->lut_obd->obd_name, idx, ted->ted_lcd->lcd_uuid,
+ ted->ted_lcd->lcd_generation);
ted->ted_lr_idx = idx;
ted->ted_lr_off = tgt->lut_lsd.lsd_client_start +
RETURN(0);
}
-EXPORT_SYMBOL(tgt_client_add);
int tgt_client_del(const struct lu_env *env, struct obd_export *exp)
{
LASSERT(ted->ted_lcd);
+ if (unlikely(tgt == NULL)) {
+ CDEBUG(D_ERROR, "%s: No target for connected export\n",
+ class_exp2obd(exp)->obd_name);
+ RETURN(-EINVAL);
+ }
+
/* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
if (!strcmp((char *)ted->ted_lcd->lcd_uuid,
(char *)tgt->lut_obd->obd_uuid.uuid) ||
RETURN(rc);
}
- mutex_lock(&ted->ted_lcd_lock);
memset(ted->ted_lcd->lcd_uuid, 0, sizeof ted->ted_lcd->lcd_uuid);
rc = tgt_client_data_update(env, exp);
- mutex_unlock(&ted->ted_lcd_lock);
CDEBUG(rc == 0 ? D_INFO : D_ERROR,
"%s: zeroing out client %s at idx %u (%llu), rc %d\n",
}
EXPORT_SYMBOL(tgt_client_del);
+int tgt_add_reply_data(const struct lu_env *env, struct lu_target *tgt,
+ struct tg_export_data *ted, struct tg_reply_data *trd,
+ struct thandle *th, bool update_lrd_file)
+{
+ struct lsd_reply_data *lrd;
+ int i;
+
+ lrd = &trd->trd_reply;
+ /* update export last transno */
+ mutex_lock(&ted->ted_lcd_lock);
+ if (lrd->lrd_transno > ted->ted_lcd->lcd_last_transno)
+ ted->ted_lcd->lcd_last_transno = lrd->lrd_transno;
+ mutex_unlock(&ted->ted_lcd_lock);
+
+ /* find a empty slot */
+ i = tgt_find_free_reply_slot(tgt);
+ if (unlikely(i < 0)) {
+ CERROR("%s: couldn't find a slot for reply data: "
+ "rc = %d\n", tgt_name(tgt), i);
+ RETURN(i);
+ }
+ trd->trd_index = i;
+
+ if (update_lrd_file) {
+ loff_t off;
+ int rc;
+
+ /* write reply data to disk */
+ off = sizeof(struct lsd_reply_header) + sizeof(*lrd) * i;
+ rc = tgt_reply_data_write(env, tgt, lrd, off, th);
+ if (unlikely(rc != 0)) {
+ CERROR("%s: can't update %s file: rc = %d\n",
+ tgt_name(tgt), REPLY_DATA, rc);
+ RETURN(rc);
+ }
+ }
+ /* add reply data to target export's reply list */
+ mutex_lock(&ted->ted_lcd_lock);
+ list_add(&trd->trd_list, &ted->ted_reply_list);
+ ted->ted_reply_cnt++;
+ if (ted->ted_reply_cnt > ted->ted_reply_max)
+ ted->ted_reply_max = ted->ted_reply_cnt;
+ mutex_unlock(&ted->ted_lcd_lock);
+
+ CDEBUG(D_TRACE, "add reply %p: xid %llu, transno %llu, "
+ "tag %hu, client gen %u, slot idx %d\n",
+ trd, lrd->lrd_xid, lrd->lrd_transno,
+ trd->trd_tag, lrd->lrd_client_gen, i);
+ RETURN(0);
+}
+EXPORT_SYMBOL(tgt_add_reply_data);
+
/*
* last_rcvd & last_committed update callbacks
*/
-int tgt_last_rcvd_update(const struct lu_env *env, struct lu_target *tgt,
- struct dt_object *obj, __u64 opdata,
- struct thandle *th, struct ptlrpc_request *req)
+static int tgt_last_rcvd_update(const struct lu_env *env, struct lu_target *tgt,
+ struct dt_object *obj, __u64 opdata,
+ struct thandle *th, struct ptlrpc_request *req)
{
struct tgt_thread_info *tti = tgt_th_info(env);
+ struct tgt_session_info *tsi = tgt_ses_info(env);
+ struct obd_export *exp = tsi->tsi_exp;
struct tg_export_data *ted;
__u64 *transno_p;
int rc = 0;
- bool lw_client, update = false;
+ bool lw_client;
ENTRY;
- ted = &req->rq_export->exp_target_data;
- lw_client = exp_connect_flags(req->rq_export) & OBD_CONNECT_LIGHTWEIGHT;
+ LASSERT(exp != NULL);
+ ted = &exp->exp_target_data;
+
+ lw_client = exp_connect_flags(exp) & OBD_CONNECT_LIGHTWEIGHT;
if (ted->ted_lr_idx < 0 && !lw_client)
/* ofd connect may cause transaction before export has
* last_rcvd slot */
RETURN(0);
- tti->tti_transno = lustre_msg_get_transno(req->rq_reqmsg);
+ if (req != NULL)
+ tti->tti_transno = lustre_msg_get_transno(req->rq_reqmsg);
+ else
+ /* From update replay, tti_transno should be set already */
+ LASSERT(tti->tti_transno != 0);
spin_lock(&tgt->lut_translock);
if (th->th_result != 0) {
spin_unlock(&tgt->lut_translock);
/** VBR: set new versions */
- if (th->th_result == 0 && obj != NULL)
- dt_version_set(env, obj, tti->tti_transno, th);
+ if (th->th_result == 0 && obj != NULL) {
+ struct dt_object *dto = dt_object_locate(obj, th->th_dev);
+ dt_version_set(env, dto, tti->tti_transno, th);
+ }
/* filling reply data */
CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
tti->tti_transno, tgt->lut_obd->obd_last_committed);
- req->rq_transno = tti->tti_transno;
- lustre_msg_set_transno(req->rq_repmsg, tti->tti_transno);
+ if (req != NULL) {
+ req->rq_transno = tti->tti_transno;
+ lustre_msg_set_transno(req->rq_repmsg, tti->tti_transno);
+ }
/* if can't add callback, do sync write */
- th->th_sync |= !!tgt_last_commit_cb_add(th, tgt, req->rq_export,
- tti->tti_transno);
+ th->th_sync |= !!tgt_last_commit_cb_add(th, tgt, exp, tti->tti_transno);
if (lw_client) {
/* All operations performed by LW clients are synchronous and
spin_lock(&tgt->lut_translock);
if (tti->tti_transno > tgt->lut_lsd.lsd_last_transno) {
tgt->lut_lsd.lsd_last_transno = tti->tti_transno;
- update = true;
+ spin_unlock(&tgt->lut_translock);
+ /* Although lightweight (LW) connections have no slot
+ * in the last_rcvd, we still want to maintain
+ * the in-memory lsd_client_data structure in order to
+ * properly handle reply reconstruction. */
+ rc = tgt_server_data_write(env, tgt, th);
+ } else {
+ spin_unlock(&tgt->lut_translock);
}
- spin_unlock(&tgt->lut_translock);
- /* Although lightweight (LW) connections have no slot in
- * last_rcvd, we still want to maintain the in-memory
- * lsd_client_data structure in order to properly handle reply
- * reconstruction. */
} else if (ted->ted_lr_off == 0) {
CERROR("%s: client idx %d has offset %lld\n",
tgt_name(tgt), ted->ted_lr_idx, ted->ted_lr_off);
RETURN(-EINVAL);
}
- /* if the export has already been disconnected, we have no last_rcvd
- * slot, update server data with latest transno then */
- if (ted->ted_lcd == NULL) {
- CWARN("commit transaction for disconnected client %s: rc %d\n",
- req->rq_export->exp_client_uuid.uuid, rc);
- GOTO(srv_update, rc = 0);
+ /* Target that supports multiple reply data */
+ if (tgt_is_multimodrpcs_client(exp)) {
+ struct tg_reply_data *trd;
+ struct lsd_reply_data *lrd;
+ __u64 *pre_versions;
+ bool write_update;
+
+ OBD_ALLOC_PTR(trd);
+ if (unlikely(trd == NULL))
+ RETURN(-ENOMEM);
+
+ /* fill reply data information */
+ lrd = &trd->trd_reply;
+ lrd->lrd_transno = tti->tti_transno;
+ if (req != NULL) {
+ lrd->lrd_xid = req->rq_xid;
+ trd->trd_tag = lustre_msg_get_tag(req->rq_reqmsg);
+ pre_versions = lustre_msg_get_versions(req->rq_repmsg);
+ lrd->lrd_result = th->th_result;
+ lrd->lrd_client_gen = ted->ted_lcd->lcd_generation;
+ write_update = true;
+ } else {
+ LASSERT(tsi->tsi_xid != 0);
+ lrd->lrd_xid = tsi->tsi_xid;
+ lrd->lrd_result = tsi->tsi_result;
+ lrd->lrd_client_gen = tsi->tsi_client_gen;
+ trd->trd_tag = 0;
+ pre_versions = NULL;
+ write_update = false;
+ }
+
+ lrd->lrd_data = opdata;
+ if (pre_versions) {
+ trd->trd_pre_versions[0] = pre_versions[0];
+ trd->trd_pre_versions[1] = pre_versions[1];
+ trd->trd_pre_versions[2] = pre_versions[2];
+ trd->trd_pre_versions[3] = pre_versions[3];
+ }
+
+ rc = tgt_add_reply_data(env, tgt, ted, trd, th, write_update);
+ if (rc < 0)
+ OBD_FREE_PTR(trd);
+ return rc;
}
+ /* Enough for update replay, let's return */
+ if (req == NULL)
+ RETURN(rc);
+
mutex_lock(&ted->ted_lcd_lock);
LASSERT(ergo(tti->tti_transno == 0, th->th_result != 0));
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
- lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
+ if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
transno_p = &ted->ted_lcd->lcd_last_close_transno;
ted->ted_lcd->lcd_last_close_xid = req->rq_xid;
ted->ted_lcd->lcd_last_close_result = th->th_result;
/* Update transno in slot only if non-zero number, i.e. no errors */
if (likely(tti->tti_transno != 0)) {
- if (*transno_p > tti->tti_transno &&
- !tgt->lut_no_reconstruct) {
- CERROR("%s: trying to overwrite bigger transno:"
- "on-disk: "LPU64", new: "LPU64" replay: %d. "
- "see LU-617.\n", tgt_name(tgt), *transno_p,
- tti->tti_transno, req_is_replay(req));
- if (req_is_replay(req)) {
- spin_lock(&req->rq_export->exp_lock);
- req->rq_export->exp_vbr_failed = 1;
- spin_unlock(&req->rq_export->exp_lock);
+ /* Don't overwrite bigger transaction number with lower one.
+ * That is not sign of problem in all cases, but in any case
+ * this value should be monotonically increased only. */
+ if (*transno_p > tti->tti_transno) {
+ if (!tgt->lut_no_reconstruct) {
+ CERROR("%s: trying to overwrite bigger transno:"
+ "on-disk: "LPU64", new: "LPU64" replay: "
+ "%d. See LU-617.\n", tgt_name(tgt),
+ *transno_p, tti->tti_transno,
+ req_is_replay(req));
+ if (req_is_replay(req)) {
+ spin_lock(&req->rq_export->exp_lock);
+ req->rq_export->exp_vbr_failed = 1;
+ spin_unlock(&req->rq_export->exp_lock);
+ }
+ mutex_unlock(&ted->ted_lcd_lock);
+ RETURN(req_is_replay(req) ? -EOVERFLOW : 0);
}
- mutex_unlock(&ted->ted_lcd_lock);
- RETURN(req_is_replay(req) ? -EOVERFLOW : 0);
+ } else {
+ *transno_p = tti->tti_transno;
}
- *transno_p = tti->tti_transno;
}
if (!lw_client) {
}
}
mutex_unlock(&ted->ted_lcd_lock);
- EXIT;
-srv_update:
- if (update)
- rc = tgt_server_data_write(env, tgt, th);
- return rc;
+ RETURN(rc);
}
/*
* It updates last_rcvd client slot and version of object in
* simple way but with all locks to simulate all drawbacks
*/
-int tgt_last_rcvd_update_echo(const struct lu_env *env, struct lu_target *tgt,
- struct dt_object *obj, struct thandle *th,
- struct obd_export *exp)
+static int tgt_last_rcvd_update_echo(const struct lu_env *env,
+ struct lu_target *tgt,
+ struct dt_object *obj,
+ struct thandle *th,
+ struct obd_export *exp)
{
struct tgt_thread_info *tti = tgt_th_info(env);
struct tg_export_data *ted = &exp->exp_target_data;
RETURN(rc);
}
-int tgt_clients_data_init(const struct lu_env *env, struct lu_target *tgt,
- unsigned long last_size)
+static int tgt_clients_data_init(const struct lu_env *env,
+ struct lu_target *tgt,
+ unsigned long last_size)
{
struct obd_device *obd = tgt->lut_obd;
struct lr_server_data *lsd = &tgt->lut_lsd;
int cl_idx;
int rc = 0;
loff_t off = lsd->lsd_client_start;
+ __u32 generation = 0;
+ struct cfs_hash *hash = NULL;
ENTRY;
if (lcd == NULL)
RETURN(-ENOMEM);
+ hash = cfs_hash_getref(tgt->lut_obd->obd_gen_hash);
+ if (hash == NULL)
+ GOTO(err_out, rc = -ENODEV);
+
for (cl_idx = 0; off < last_size; cl_idx++) {
struct obd_export *exp;
__u64 last_transno;
* need to be set up like real exports as 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));
+ " srv lr: "LPU64" lx: "LPU64" gen %u\n", lcd->lcd_uuid,
+ cl_idx, last_transno, lsd->lsd_last_transno,
+ lcd_last_xid(lcd), lcd->lcd_generation);
exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
if (IS_ERR(exp)) {
exp->exp_in_recovery = 0;
spin_unlock(&exp->exp_lock);
obd->obd_max_recoverable_clients++;
+
+ if (tgt->lut_lsd.lsd_feature_incompat &
+ OBD_INCOMPAT_MULTI_RPCS &&
+ lcd->lcd_generation != 0) {
+ /* compute the highest valid client generation */
+ generation = max(generation, lcd->lcd_generation);
+ /* fill client_generation <-> export hash table */
+ rc = cfs_hash_add_unique(hash, &lcd->lcd_generation,
+ &exp->exp_gen_hash);
+ if (rc != 0) {
+ CERROR("%s: duplicate export for client "
+ "generation %u\n",
+ tgt_name(tgt), lcd->lcd_generation);
+ class_export_put(exp);
+ GOTO(err_out, rc);
+ }
+ }
+
class_export_put(exp);
+ rc = rev_import_init(exp);
+ if (rc != 0) {
+ class_unlink_export(exp);
+ GOTO(err_out, rc);
+ }
+
/* Need to check last_rcvd even for duplicated exports. */
CDEBUG(D_OTHER, "client at idx %d has last_transno = "LPU64"\n",
cl_idx, last_transno);
spin_unlock(&tgt->lut_translock);
}
+ /* record highest valid client generation */
+ atomic_set(&tgt->lut_client_generation, generation);
+
err_out:
+ if (hash != NULL)
+ cfs_hash_putref(hash);
OBD_FREE_PTR(lcd);
RETURN(rc);
}
.rocompat = OBD_ROCOMPAT_LOVOBJID,
.incompat = OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR |
OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR |
- OBD_INCOMPAT_LMM_VER | OBD_INCOMPAT_MULTI_OI,
+ OBD_INCOMPAT_LMM_VER | OBD_INCOMPAT_MULTI_OI |
+ OBD_INCOMPAT_MULTI_RPCS,
.rocinit = OBD_ROCOMPAT_LOVOBJID,
.incinit = OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR |
OBD_INCOMPAT_MULTI_OI,
},
[LDD_F_SV_TYPE_OST] = {
- .rocompat = 0,
+ .rocompat = OBD_ROCOMPAT_IDX_IN_IDIF,
.incompat = OBD_INCOMPAT_OST | OBD_INCOMPAT_COMMON_LR |
OBD_INCOMPAT_FID,
- .rocinit = 0,
+ .rocinit = OBD_ROCOMPAT_IDX_IN_IDIF,
.incinit = OBD_INCOMPAT_OST | OBD_INCOMPAT_COMMON_LR,
}
};
__u32 index;
int rc, type;
- rc = dt_attr_get(env, tgt->lut_last_rcvd, &tti->tti_attr, BYPASS_CAPA);
+ rc = dt_attr_get(env, tgt->lut_last_rcvd, &tti->tti_attr);
if (rc)
RETURN(rc);
struct lu_target *tgt = cookie;
struct tgt_session_info *tsi;
struct tgt_thread_info *tti = tgt_th_info(env);
+ struct dt_object *dto;
int rc;
/* if there is no session, then this transaction is not result of
if (tsi->tsi_exp == NULL)
return 0;
- tti_buf_lcd(tti);
- rc = dt_declare_record_write(env, tgt->lut_last_rcvd,
- &tti->tti_buf,
- tsi->tsi_exp->exp_target_data.ted_lr_off,
- th);
- if (rc)
- return rc;
-
- tti_buf_lsd(tti);
- rc = dt_declare_record_write(env, tgt->lut_last_rcvd,
- &tti->tti_buf, 0, th);
- if (rc)
- return rc;
+ if (tgt_is_multimodrpcs_client(tsi->tsi_exp)) {
+ /*
+ * Use maximum possible file offset for declaration to ensure
+ * ZFS will reserve enough credits for a write anywhere in this
+ * file, since we don't know where in the file the write will be
+ * because a replay slot has not been assigned. This should be
+ * replaced by dmu_tx_hold_append() when available.
+ */
+ tti->tti_off = atomic_read(&tgt->lut_num_clients) * 8 *
+ sizeof(struct lsd_reply_data);
+ tti->tti_buf.lb_buf = NULL;
+ tti->tti_buf.lb_len = sizeof(struct lsd_reply_data);
+ dto = dt_object_locate(tgt->lut_reply_data, th->th_dev);
+ rc = dt_declare_record_write(env, dto, &tti->tti_buf,
+ tti->tti_off, th);
+ if (rc)
+ return rc;
+ } else {
+ dto = dt_object_locate(tgt->lut_last_rcvd, th->th_dev);
+ tti_buf_lcd(tti);
+ tti->tti_off = tsi->tsi_exp->exp_target_data.ted_lr_off;
+ rc = dt_declare_record_write(env, dto, &tti->tti_buf,
+ tti->tti_off, th);
+ if (rc)
+ return rc;
+ }
if (tsi->tsi_vbr_obj != NULL &&
- !lu_object_remote(&tsi->tsi_vbr_obj->do_lu))
- rc = dt_declare_version_set(env, tsi->tsi_vbr_obj, th);
+ !lu_object_remote(&tsi->tsi_vbr_obj->do_lu)) {
+ dto = dt_object_locate(tsi->tsi_vbr_obj, th->th_dev);
+ rc = dt_declare_version_set(env, dto, th);
+ }
return rc;
}
if (tsi->tsi_exp == NULL)
return 0;
- echo_client = (tgt_ses_req(tsi) == NULL);
+ echo_client = (tgt_ses_req(tsi) == NULL && tsi->tsi_xid == 0);
if (tti->tti_has_trans && !echo_client) {
if (tti->tti_mult_trans == 0) {
tgt_ses_req(tsi));
return rc;
}
+
+int tgt_reply_data_init(const struct lu_env *env, struct lu_target *tgt)
+{
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ struct lsd_reply_data *lrd = &tti->tti_lrd;
+ unsigned long reply_data_size;
+ int rc;
+ struct lsd_reply_header *lrh = NULL;
+ struct lsd_client_data *lcd = NULL;
+ struct tg_reply_data *trd = NULL;
+ int idx;
+ loff_t off;
+ struct cfs_hash *hash = NULL;
+ struct obd_export *exp;
+ struct tg_export_data *ted;
+ int reply_data_recovered = 0;
+
+ rc = dt_attr_get(env, tgt->lut_reply_data, &tti->tti_attr);
+ if (rc)
+ GOTO(out, rc);
+ reply_data_size = (unsigned long)tti->tti_attr.la_size;
+
+ OBD_ALLOC_PTR(lrh);
+ if (lrh == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ if (reply_data_size == 0) {
+ CDEBUG(D_INFO, "%s: new reply_data file, initializing\n",
+ tgt_name(tgt));
+ lrh->lrh_magic = LRH_MAGIC;
+ lrh->lrh_header_size = sizeof(struct lsd_reply_header);
+ lrh->lrh_reply_size = sizeof(struct lsd_reply_data);
+ rc = tgt_reply_header_write(env, tgt, lrh);
+ if (rc) {
+ CERROR("%s: error writing %s: rc = %d\n",
+ tgt_name(tgt), REPLY_DATA, rc);
+ GOTO(out, rc);
+ }
+ } else {
+ rc = tgt_reply_header_read(env, tgt, lrh);
+ if (rc) {
+ CERROR("%s: error reading %s: rc = %d\n",
+ tgt_name(tgt), REPLY_DATA, rc);
+ GOTO(out, rc);
+ }
+ if (lrh->lrh_magic != LRH_MAGIC ||
+ lrh->lrh_header_size != sizeof(struct lsd_reply_header) ||
+ lrh->lrh_reply_size != sizeof(struct lsd_reply_data)) {
+ CERROR("%s: invalid header in %s\n",
+ tgt_name(tgt), REPLY_DATA);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ hash = cfs_hash_getref(tgt->lut_obd->obd_gen_hash);
+ if (hash == NULL)
+ GOTO(out, rc = -ENODEV);
+
+ OBD_ALLOC_PTR(lcd);
+ if (lcd == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ OBD_ALLOC_PTR(trd);
+ if (trd == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ /* Load reply_data from disk */
+ for (idx = 0, off = sizeof(struct lsd_reply_header);
+ off < reply_data_size;
+ idx++, off += sizeof(struct lsd_reply_data)) {
+ rc = tgt_reply_data_read(env, tgt, lrd, off);
+ if (rc) {
+ CERROR("%s: error reading %s: rc = %d\n",
+ tgt_name(tgt), REPLY_DATA, rc);
+ GOTO(out, rc);
+ }
+
+ exp = cfs_hash_lookup(hash, &lrd->lrd_client_gen);
+ if (exp == NULL) {
+ /* old reply data from a disconnected client */
+ continue;
+ }
+ ted = &exp->exp_target_data;
+ mutex_lock(&ted->ted_lcd_lock);
+
+ /* create in-memory reply_data and link it to
+ * target export's reply list */
+ rc = tgt_set_reply_slot(tgt, idx);
+ if (rc != 0) {
+ mutex_unlock(&ted->ted_lcd_lock);
+ GOTO(out, rc);
+ }
+ trd->trd_reply = *lrd;
+ trd->trd_pre_versions[0] = 0;
+ trd->trd_pre_versions[1] = 0;
+ trd->trd_pre_versions[2] = 0;
+ trd->trd_pre_versions[3] = 0;
+ trd->trd_index = idx;
+ trd->trd_tag = 0;
+ list_add(&trd->trd_list, &ted->ted_reply_list);
+ ted->ted_reply_cnt++;
+ if (ted->ted_reply_cnt > ted->ted_reply_max)
+ ted->ted_reply_max = ted->ted_reply_cnt;
+
+ CDEBUG(D_HA, "%s: restore reply %p: xid %llu, "
+ "transno %llu, client gen %u, slot idx %d\n",
+ tgt_name(tgt), trd, lrd->lrd_xid,
+ lrd->lrd_transno, lrd->lrd_client_gen,
+ trd->trd_index);
+
+ /* update export last committed transation */
+ exp->exp_last_committed = max(exp->exp_last_committed,
+ lrd->lrd_transno);
+
+ mutex_unlock(&ted->ted_lcd_lock);
+ class_export_put(exp);
+
+ /* update target last committed transaction */
+ spin_lock(&tgt->lut_translock);
+ tgt->lut_last_transno = max(tgt->lut_last_transno,
+ lrd->lrd_transno);
+ spin_unlock(&tgt->lut_translock);
+
+ reply_data_recovered++;
+
+ OBD_ALLOC_PTR(trd);
+ if (trd == NULL)
+ GOTO(out, rc = -ENOMEM);
+ }
+ CDEBUG(D_INFO, "%s: %d reply data have been recovered\n",
+ tgt_name(tgt), reply_data_recovered);
+ }
+
+ spin_lock(&tgt->lut_translock);
+ /* obd_last_committed is used for compatibility
+ * with other lustre recovery code */
+ tgt->lut_obd->obd_last_committed = tgt->lut_last_transno;
+ spin_unlock(&tgt->lut_translock);
+
+ rc = 0;
+
+out:
+ if (hash != NULL)
+ cfs_hash_putref(hash);
+ if (lcd != NULL)
+ OBD_FREE_PTR(lcd);
+ if (trd != NULL)
+ OBD_FREE_PTR(trd);
+ if (lrh != NULL)
+ OBD_FREE_PTR(lrh);
+ return rc;
+}
+
+struct tg_reply_data *tgt_lookup_reply_by_xid(struct tg_export_data *ted,
+ __u64 xid)
+{
+ struct tg_reply_data *found = NULL;
+ struct tg_reply_data *reply;
+
+ mutex_lock(&ted->ted_lcd_lock);
+ list_for_each_entry(reply, &ted->ted_reply_list, trd_list) {
+ if (reply->trd_reply.lrd_xid == xid) {
+ found = reply;
+ break;
+ }
+ }
+ mutex_unlock(&ted->ted_lcd_lock);
+ return found;
+}
+EXPORT_SYMBOL(tgt_lookup_reply_by_xid);
+
+/* Look for a reply data matching specified request @req
+ * A copy is returned in @trd if the pointer is not NULL
+ */
+bool tgt_lookup_reply(struct ptlrpc_request *req, struct tg_reply_data *trd)
+{
+ struct tg_export_data *ted = &req->rq_export->exp_target_data;
+ struct tg_reply_data *reply;
+ bool found = false;
+
+ reply = tgt_lookup_reply_by_xid(ted, req->rq_xid);
+ if (reply != NULL) {
+ found = true;
+ if (trd != NULL)
+ *trd = *reply;
+ }
+
+ CDEBUG(D_TRACE, "%s: lookup reply xid %llu, found %d\n",
+ tgt_name(class_exp2tgt(req->rq_export)), req->rq_xid,
+ found ? 1 : 0);
+
+ return found;
+}
+EXPORT_SYMBOL(tgt_lookup_reply);
+
+int tgt_handle_received_xid(struct obd_export *exp, __u64 rcvd_xid)
+{
+ struct tg_export_data *ted = &exp->exp_target_data;
+ struct lu_target *lut = class_exp2tgt(exp);
+ struct tg_reply_data *trd, *tmp;
+
+ mutex_lock(&ted->ted_lcd_lock);
+ list_for_each_entry_safe(trd, tmp, &ted->ted_reply_list, trd_list) {
+ if (trd->trd_reply.lrd_xid > rcvd_xid)
+ continue;
+ ted->ted_release_xid++;
+ tgt_release_reply_data(lut, ted, trd);
+ }
+ mutex_unlock(&ted->ted_lcd_lock);
+
+ return 0;
+}
+
+int tgt_handle_tag(struct obd_export *exp, __u16 tag)
+{
+ struct tg_export_data *ted = &exp->exp_target_data;
+ struct lu_target *lut = class_exp2tgt(exp);
+ struct tg_reply_data *trd, *tmp;
+
+ if (tag == 0)
+ return 0;
+
+ mutex_lock(&ted->ted_lcd_lock);
+ list_for_each_entry_safe(trd, tmp, &ted->ted_reply_list, trd_list) {
+ if (trd->trd_tag != tag)
+ continue;
+ ted->ted_release_tag++;
+ tgt_release_reply_data(lut, ted, trd);
+ break;
+ }
+ mutex_unlock(&ted->ted_lcd_lock);
+
+ return 0;
+}
+
git://git.whamcloud.com / fs / lustre-release.git / blobdiff