* 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, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
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,
return dt_record_write(env, tgt->lut_last_rcvd, &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);
if (IS_ERR(th))
RETURN(PTR_ERR(th));
+ tti_buf_lcd(tti);
rc = dt_declare_record_write(env, tgt->lut_last_rcvd,
- sizeof(struct lsd_client_data),
+ &tti->tti_buf,
ted->ted_lr_off, th);
if (rc)
GOTO(out, rc);
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)
RETURN(rc);
}
-EXPORT_SYMBOL(tgt_server_data_write);
/**
* Update server data in last_rcvd
th->th_sync = sync;
+ tti_buf_lsd(tti);
rc = dt_declare_record_write(env, tgt->lut_last_rcvd,
- sizeof(struct lr_server_data),
- tti->tti_off, th);
+ &tti->tti_buf, tti->tti_off, th);
if (rc)
GOTO(out, rc);
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);
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);
/** 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
__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;
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);
- ccb->lncc_exp->exp_need_sync = 0;
+ /* 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;
+
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) {
RETURN(0);
}
-EXPORT_SYMBOL(tgt_client_add);
int tgt_client_del(const struct lu_env *env, struct obd_export *exp)
{
/*
* 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 tg_export_data *ted;
__u64 *transno_p;
int rc = 0;
ENTRY;
- if (tsi->tsi_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",
- tti->tti_transno);
- return 0;
- }
-
- tsi->tsi_has_trans = 1;
- /* that can be OUT target and we need tgt_session_info */
- if (req == NULL) {
- req = tgt_ses_req(tsi);
- if (req == NULL) /* echo client case */
- RETURN(0);
- }
-
ted = &req->rq_export->exp_target_data;
lw_client = exp_connect_flags(req->rq_export) & 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);
+
spin_lock(&tgt->lut_translock);
if (th->th_result != 0) {
if (tti->tti_transno != 0) {
* 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) {
+ } 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);
ted->ted_lcd->lcd_last_close_result = th->th_result;
} else {
/* VBR: save versions in last_rcvd for reconstruct. */
- __u64 *pre_versions = lustre_msg_get_versions(req->rq_reqmsg);
+ __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
if (pre_versions) {
ted->ted_lcd->lcd_pre_versions[0] = pre_versions[0];
/* 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) {
+ 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,
rc = tgt_server_data_write(env, tgt, th);
return rc;
}
-EXPORT_SYMBOL(tgt_last_rcvd_update);
+/*
+ * last_rcvd update for echo client simulation.
+ * It updates last_rcvd client slot and version of object in
+ * simple way but with all locks to simulate all drawbacks
+ */
+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;
+ int rc = 0;
+
+ ENTRY;
+
+ tti->tti_transno = 0;
+
+ spin_lock(&tgt->lut_translock);
+ if (th->th_result == 0)
+ tti->tti_transno = ++tgt->lut_last_transno;
+ 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 can't add callback, do sync write */
+ th->th_sync |= !!tgt_last_commit_cb_add(th, tgt, exp,
+ tti->tti_transno);
+
+ LASSERT(ted->ted_lr_off > 0);
+
+ mutex_lock(&ted->ted_lcd_lock);
+ LASSERT(ergo(tti->tti_transno == 0, th->th_result != 0));
+ ted->ted_lcd->lcd_last_transno = tti->tti_transno;
+ ted->ted_lcd->lcd_last_result = th->th_result;
+
+ tti->tti_off = ted->ted_lr_off;
+ rc = tgt_client_data_write(env, tgt, ted->ted_lcd, &tti->tti_off, th);
+ mutex_unlock(&ted->ted_lcd_lock);
+ RETURN(rc);
+}
+
+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;
+ struct lsd_client_data *lcd = NULL;
+ struct tg_export_data *ted;
+ int cl_idx;
+ int rc = 0;
+ loff_t off = lsd->lsd_client_start;
+
+ ENTRY;
+
+ CLASSERT(offsetof(struct lsd_client_data, lcd_padding) +
+ sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
+
+ OBD_ALLOC_PTR(lcd);
+ if (lcd == NULL)
+ RETURN(-ENOMEM);
+
+ for (cl_idx = 0; off < last_size; cl_idx++) {
+ struct obd_export *exp;
+ __u64 last_transno;
+
+ /* Don't assume off is incremented properly by
+ * read_record(), in case sizeof(*lcd)
+ * isn't the same as fsd->lsd_client_size. */
+ off = lsd->lsd_client_start + cl_idx * lsd->lsd_client_size;
+ rc = tgt_client_data_read(env, tgt, lcd, &off, cl_idx);
+ if (rc) {
+ CERROR("%s: error reading last_rcvd %s idx %d off "
+ "%llu: rc = %d\n", tgt_name(tgt), 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 disconnect, so they
+ * 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));
+
+ 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 */
+ CERROR("%s: Duplicate export %s!\n",
+ tgt_name(tgt), lcd->lcd_uuid);
+ continue;
+ }
+ GOTO(err_out, rc = PTR_ERR(exp));
+ }
+
+ ted = &exp->exp_target_data;
+ *ted->ted_lcd = *lcd;
+
+ rc = tgt_client_add(env, exp, cl_idx);
+ LASSERTF(rc == 0, "rc = %d\n", rc); /* can't fail existing */
+ /* VBR: set export last committed version */
+ exp->exp_last_committed = last_transno;
+ 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);
+
+ /* 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_lock(&tgt->lut_translock);
+ tgt->lut_last_transno = max(last_transno,
+ tgt->lut_last_transno);
+ spin_unlock(&tgt->lut_translock);
+ }
+
+err_out:
+ OBD_FREE_PTR(lcd);
+ RETURN(rc);
+}
+
+struct server_compat_data {
+ __u32 rocompat;
+ __u32 incompat;
+ __u32 rocinit;
+ __u32 incinit;
+};
+
+static struct server_compat_data tgt_scd[] = {
+ [LDD_F_SV_TYPE_MDT] = {
+ .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,
+ .rocinit = OBD_ROCOMPAT_LOVOBJID,
+ .incinit = OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR |
+ OBD_INCOMPAT_MULTI_OI,
+ },
+ [LDD_F_SV_TYPE_OST] = {
+ .rocompat = OBD_ROCOMPAT_IDX_IN_IDIF,
+ .incompat = OBD_INCOMPAT_OST | OBD_INCOMPAT_COMMON_LR |
+ OBD_INCOMPAT_FID,
+ .rocinit = OBD_ROCOMPAT_IDX_IN_IDIF,
+ .incinit = OBD_INCOMPAT_OST | OBD_INCOMPAT_COMMON_LR,
+ }
+};
+
+int tgt_server_data_init(const struct lu_env *env, struct lu_target *tgt)
+{
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ struct lr_server_data *lsd = &tgt->lut_lsd;
+ unsigned long last_rcvd_size;
+ __u32 index;
+ int rc, type;
+
+ rc = dt_attr_get(env, tgt->lut_last_rcvd, &tti->tti_attr, BYPASS_CAPA);
+ if (rc)
+ RETURN(rc);
+
+ last_rcvd_size = (unsigned long)tti->tti_attr.la_size;
+
+ /* ensure padding in the struct is the correct size */
+ CLASSERT(offsetof(struct lr_server_data, lsd_padding) +
+ sizeof(lsd->lsd_padding) == LR_SERVER_SIZE);
+
+ rc = server_name2index(tgt_name(tgt), &index, NULL);
+ if (rc < 0) {
+ CERROR("%s: Can not get index from name: rc = %d\n",
+ tgt_name(tgt), rc);
+ RETURN(rc);
+ }
+ /* server_name2index() returns type */
+ type = rc;
+ if (type != LDD_F_SV_TYPE_MDT && type != LDD_F_SV_TYPE_OST) {
+ CERROR("%s: unknown target type %x\n", tgt_name(tgt), type);
+ RETURN(-EINVAL);
+ }
+
+ /* last_rcvd on OST doesn't provide reconstruct support because there
+ * may be up to 8 in-flight write requests per single slot in
+ * last_rcvd client data
+ */
+ tgt->lut_no_reconstruct = (type == LDD_F_SV_TYPE_OST);
+
+ if (last_rcvd_size == 0) {
+ LCONSOLE_WARN("%s: new disk, initializing\n", tgt_name(tgt));
+
+ memcpy(lsd->lsd_uuid, tgt->lut_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_subdir_count = OBJ_SUBDIR_COUNT;
+ lsd->lsd_osd_index = index;
+ lsd->lsd_feature_rocompat = tgt_scd[type].rocinit;
+ lsd->lsd_feature_incompat = tgt_scd[type].incinit;
+ } else {
+ rc = tgt_server_data_read(env, tgt);
+ if (rc) {
+ CERROR("%s: error reading LAST_RCVD: rc= %d\n",
+ tgt_name(tgt), rc);
+ RETURN(rc);
+ }
+ if (strcmp(lsd->lsd_uuid, tgt->lut_obd->obd_uuid.uuid)) {
+ LCONSOLE_ERROR_MSG(0x157, "Trying to start OBD %s "
+ "using the wrong disk %s. Were the"
+ " /dev/ assignments rearranged?\n",
+ tgt->lut_obd->obd_uuid.uuid,
+ lsd->lsd_uuid);
+ RETURN(-EINVAL);
+ }
+
+ if (lsd->lsd_osd_index != index) {
+ LCONSOLE_ERROR_MSG(0x157, "%s: index %d in last rcvd "
+ "is different with the index %d in"
+ "config log, It might be disk"
+ "corruption!\n", tgt_name(tgt),
+ lsd->lsd_osd_index, index);
+ RETURN(-EINVAL);
+ }
+ }
+
+ if (lsd->lsd_feature_incompat & ~tgt_scd[type].incompat) {
+ CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
+ tgt_name(tgt),
+ lsd->lsd_feature_incompat & ~tgt_scd[type].incompat);
+ RETURN(-EINVAL);
+ }
+
+ if (type == LDD_F_SV_TYPE_MDT)
+ lsd->lsd_feature_incompat |= OBD_INCOMPAT_FID;
+
+ if (lsd->lsd_feature_rocompat & ~tgt_scd[type].rocompat) {
+ CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
+ tgt_name(tgt),
+ lsd->lsd_feature_rocompat & ~tgt_scd[type].rocompat);
+ RETURN(-EINVAL);
+ }
+ /** Interop: evict all clients at first boot with 1.8 last_rcvd */
+ if (type == LDD_F_SV_TYPE_MDT &&
+ !(lsd->lsd_feature_compat & OBD_COMPAT_20)) {
+ if (last_rcvd_size > lsd->lsd_client_start) {
+ LCONSOLE_WARN("%s: mounting at first time on 1.8 FS, "
+ "remove all clients for interop needs\n",
+ tgt_name(tgt));
+ rc = tgt_truncate_last_rcvd(env, tgt,
+ lsd->lsd_client_start);
+ if (rc)
+ RETURN(rc);
+ 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;
+ }
+
+ spin_lock(&tgt->lut_translock);
+ tgt->lut_last_transno = lsd->lsd_last_transno;
+ spin_unlock(&tgt->lut_translock);
+
+ lsd->lsd_mount_count++;
+
+ CDEBUG(D_INODE, "=======,=BEGIN DUMPING LAST_RCVD========\n");
+ CDEBUG(D_INODE, "%s: server last_transno: "LPU64"\n",
+ tgt_name(tgt), tgt->lut_last_transno);
+ CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
+ tgt_name(tgt), lsd->lsd_mount_count);
+ CDEBUG(D_INODE, "%s: server data size: %u\n",
+ tgt_name(tgt), lsd->lsd_server_size);
+ CDEBUG(D_INODE, "%s: per-client data start: %u\n",
+ tgt_name(tgt), lsd->lsd_client_start);
+ CDEBUG(D_INODE, "%s: per-client data size: %u\n",
+ tgt_name(tgt), lsd->lsd_client_size);
+ CDEBUG(D_INODE, "%s: last_rcvd size: %lu\n",
+ tgt_name(tgt), last_rcvd_size);
+ CDEBUG(D_INODE, "%s: server subdir_count: %u\n",
+ tgt_name(tgt), lsd->lsd_subdir_count);
+ CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", tgt_name(tgt),
+ 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 == 0 || lsd->lsd_client_start == 0 ||
+ lsd->lsd_client_size == 0) {
+ CERROR("%s: bad last_rcvd contents!\n", tgt_name(tgt));
+ RETURN(-EINVAL);
+ }
+
+ if (!tgt->lut_obd->obd_replayable)
+ CWARN("%s: recovery support OFF\n", tgt_name(tgt));
+
+ rc = tgt_clients_data_init(env, tgt, last_rcvd_size);
+ if (rc < 0)
+ GOTO(err_client, rc);
+
+ 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);
+
+ tgt->lut_obd->u.obt.obt_mount_count = lsd->lsd_mount_count;
+ tgt->lut_obd->u.obt.obt_instance = (__u32)lsd->lsd_mount_count;
+
+ /* save it, so mount count and last_transno is current */
+ rc = tgt_server_data_update(env, tgt, 0);
+ if (rc < 0)
+ GOTO(err_client, rc);
+
+ RETURN(0);
+
+err_client:
+ class_disconnect_exports(tgt->lut_obd);
+ return rc;
+}
+
+/* add credits for last_rcvd update */
+int tgt_txn_start_cb(const struct lu_env *env, struct thandle *th,
+ void *cookie)
+{
+ struct lu_target *tgt = cookie;
+ struct tgt_session_info *tsi;
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ int rc;
+
+ /* if there is no session, then this transaction is not result of
+ * request processing but some local operation */
+ if (env->le_ses == NULL)
+ return 0;
+
+ LASSERT(tgt->lut_last_rcvd);
+ tsi = tgt_ses_info(env);
+ /* OFD may start transaction without export assigned */
+ 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 (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);
+
+ return rc;
+}
+
+/* Update last_rcvd records with latests transaction data */
+int tgt_txn_stop_cb(const struct lu_env *env, struct thandle *th,
+ void *cookie)
+{
+ struct lu_target *tgt = cookie;
+ struct tgt_session_info *tsi;
+ struct tgt_thread_info *tti = tgt_th_info(env);
+ struct dt_object *obj = NULL;
+ int rc;
+ bool echo_client;
+
+ if (env->le_ses == NULL)
+ return 0;
+
+ tsi = tgt_ses_info(env);
+ /* OFD may start transaction without export assigned */
+ if (tsi->tsi_exp == NULL)
+ return 0;
+
+ echo_client = (tgt_ses_req(tsi) == NULL);
+
+ if (tti->tti_has_trans && !echo_client) {
+ if (tti->tti_mult_trans == 0) {
+ CDEBUG(D_HA, "More than one transaction "LPU64"\n",
+ tti->tti_transno);
+ RETURN(0);
+ }
+ /* we need another transno to be assigned */
+ tti->tti_transno = 0;
+ } else if (th->th_result == 0) {
+ tti->tti_has_trans = 1;
+ }
+
+ if (tsi->tsi_vbr_obj != NULL &&
+ !lu_object_remote(&tsi->tsi_vbr_obj->do_lu)) {
+ obj = tsi->tsi_vbr_obj;
+ }
+
+ if (unlikely(echo_client)) /* echo client special case */
+ rc = tgt_last_rcvd_update_echo(env, tgt, obj, th,
+ tsi->tsi_exp);
+ else
+ rc = tgt_last_rcvd_update(env, tgt, obj, tsi->tsi_opdata, th,
+ tgt_ses_req(tsi));
+ return rc;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff