* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
}
void mdt_trans_stop(const struct lu_env *env,
- struct mdt_device *mdt, struct thandle *th)
+ struct mdt_device *mdt, struct thandle *th)
{
dt_trans_stop(env, mdt->mdt_bottom, th);
}
-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_lut.lut_lsd;
- struct lsd_client_data *lcd;
- struct obd_device *obd = mdt2obd_dev(mdt);
- loff_t off;
- int cl_idx;
- int rc = 0;
- ENTRY;
-
- OBD_ALLOC_PTR(lcd);
- if (!lcd)
- RETURN(-ENOMEM);
-
- /* 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;
- struct mdt_thread_info *mti;
-
- off = lsd->lsd_client_start +
- cl_idx * lsd->lsd_client_size;
-
- rc = tgt_client_data_read(env, &mdt->mdt_lut, 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 */
- CERROR("Duplicate export %s!\n", lcd->lcd_uuid);
- continue;
- }
- GOTO(err_client, rc = PTR_ERR(exp));
- }
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
- mti->mti_exp = exp;
- /* copy on-disk lcd to the export */
- *exp->exp_target_data.ted_lcd = *lcd;
- rc = tgt_client_add(env, exp, 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;
- spin_lock(&exp->exp_lock);
- exp->exp_connecting = 0;
- exp->exp_in_recovery = 0;
- spin_unlock(&exp->exp_lock);
- obd->obd_max_recoverable_clients++;
- class_export_put(exp);
-
- CDEBUG(D_OTHER, "client at idx %d has last_transno ="LPU64"\n",
- cl_idx, last_transno);
- /* protect __u64 value update */
- spin_lock(&mdt->mdt_lut.lut_translock);
- mdt->mdt_lut.lut_last_transno = max(last_transno,
- mdt->mdt_lut.lut_last_transno);
- spin_unlock(&mdt->mdt_lut.lut_translock);
- }
-
-err_client:
- 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_lut.lut_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;
- unsigned long last_rcvd_size;
- __u32 index;
- __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);
-
- rc = server_name2index(obd->obd_name, &index, NULL);
- if (rc < 0) {
- CERROR("%s: Can not get index from obd_name: rc = %d\n",
- obd->obd_name, rc);
- RETURN(rc);
- }
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- LASSERT(mti != NULL);
- la = &mti->mti_attr.ma_attr;
-
- obj = mdt->mdt_lut.lut_last_rcvd;
- rc = dt_attr_get(env, obj, 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 |
- OBD_INCOMPAT_MULTI_OI;
- lsd->lsd_osd_index = index;
- } else {
- LCONSOLE_WARN("%s: used disk, loading\n", obd->obd_name);
- rc = tgt_server_data_read(env, &mdt->mdt_lut);
- 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;
- 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", obd->obd_name,
- lsd->lsd_osd_index, index);
- GOTO(out, rc = -EINVAL);
- }
- }
- mount_count = lsd->lsd_mount_count;
-
- 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)) {
- if (last_rcvd_size > lsd->lsd_client_start) {
- LCONSOLE_WARN("Mounting %s at first time on 1.8 FS, "
- "remove all clients for interop needs\n",
- obd->obd_name);
- rc = tgt_truncate_last_rcvd(env, &mdt->mdt_lut,
- lsd->lsd_client_start);
- if (rc)
- GOTO(out, 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;
- }
-
- lsd->lsd_feature_incompat |= OBD_INCOMPAT_FID;
-
- spin_lock(&mdt->mdt_lut.lut_translock);
- mdt->mdt_lut.lut_last_transno = lsd->lsd_last_transno;
- spin_unlock(&mdt->mdt_lut.lut_translock);
-
- CDEBUG(D_INODE, "========BEGIN DUMPING LAST_RCVD========\n");
- CDEBUG(D_INODE, "%s: server last_transno: "LPU64"\n",
- obd->obd_name, mdt->mdt_lut.lut_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);
-
- spin_lock(&mdt->mdt_lut.lut_translock);
- /* obd_last_committed is used for compatibility
- * with other lustre recovery code */
- obd->obd_last_committed = mdt->mdt_lut.lut_last_transno;
- spin_unlock(&mdt->mdt_lut.lut_translock);
-
- obd->u.obt.obt_mount_count = mount_count + 1;
- obd->u.obt.obt_instance = (__u32)obd->u.obt.obt_mount_count;
- lsd->lsd_mount_count = obd->u.obt.obt_mount_count;
-
- /* save it, so mount count and last_transno is current */
- rc = tgt_server_data_update(env, &mdt->mdt_lut, 0);
- if (rc)
- GOTO(err_client, rc);
-
- RETURN(0);
-
-err_client:
- class_disconnect_exports(obd);
-out:
- return rc;
-}
-
/*
* 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 tg_export_data *ted;
- struct lsd_client_data *lcd;
- loff_t off;
- int err;
- __s32 rc = th->th_result;
-
- ENTRY;
- LASSERT(req);
- LASSERT(req->rq_export);
- LASSERT(mdt);
- ted = &req->rq_export->exp_target_data;
- LASSERT(ted);
-
- mutex_lock(&ted->ted_lcd_lock);
- lcd = ted->ted_lcd;
- /* if the export has already been disconnected, we have no last_rcvd
- * slot, update server data with latest transno then */
- if (lcd == NULL) {
- mutex_unlock(&ted->ted_lcd_lock);
- CWARN("commit transaction for disconnected client %s: rc %d\n",
- req->rq_export->exp_client_uuid.uuid, rc);
- err = tgt_server_data_write(mti->mti_env, &mdt->mdt_lut, th);
- RETURN(err);
- }
-
- off = ted->ted_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) {
- if (lcd->lcd_last_close_transno > mti->mti_transno) {
- CERROR("Trying to overwrite bigger transno:"
- "on-disk: "LPU64", new: "LPU64" "
- "replay: %d. see LU-617.\n",
- lcd->lcd_last_close_transno,
- mti->mti_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);
- }
- 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) {
- if (lcd->lcd_last_transno > mti->mti_transno) {
- CERROR("Trying to overwrite bigger transno:"
- "on-disk: "LPU64", new: "LPU64" "
- "replay: %d. see LU-617.\n",
- lcd->lcd_last_transno,
- mti->mti_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);
- }
- 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 (exp_connect_flags(mti->mti_exp) & OBD_CONNECT_LIGHTWEIGHT) {
- /* 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. */
- struct lu_target *tg = &mdt->mdt_lut;
- bool update = false;
-
- mutex_unlock(&ted->ted_lcd_lock);
- err = 0;
-
- /* All operations performed by LW clients are synchronous and
- * we store the committed transno in the last_rcvd header */
- spin_lock(&tg->lut_translock);
- if (mti->mti_transno > tg->lut_lsd.lsd_last_transno) {
- tg->lut_lsd.lsd_last_transno = mti->mti_transno;
- update = true;
- }
- spin_unlock(&tg->lut_translock);
-
- if (update)
- err = tgt_server_data_write(mti->mti_env, tg, th);
- } else if (off <= 0) {
- CERROR("%s: client idx %d has offset %lld\n",
- mdt2obd_dev(mdt)->obd_name, ted->ted_lr_idx, off);
- mutex_unlock(&ted->ted_lcd_lock);
- err = -EINVAL;
- } else {
- err = tgt_client_data_write(mti->mti_env, &mdt->mdt_lut, lcd,
- &off, th);
- mutex_unlock(&ted->ted_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 thandle *th, void *cookie)
-{
- struct mdt_device *mdt = cookie;
- struct mdt_thread_info *mti;
- int rc;
- ENTRY;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-
- LASSERT(mdt->mdt_lut.lut_last_rcvd);
- if (mti->mti_exp == NULL)
- RETURN(0);
-
- rc = dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- sizeof(struct lsd_client_data),
- mti->mti_exp->exp_target_data.ted_lr_off,
- th);
- if (rc)
- return rc;
-
- rc = dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
- sizeof(struct lr_server_data), 0, th);
- if (rc)
- return rc;
-
- if (mti->mti_mos != NULL)
- rc = dt_declare_version_set(env, mdt_obj2dt(mti->mti_mos), th);
-
- return rc;
-}
-
-/* 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_thread_info *mti;
- struct ptlrpc_request *req;
-
- mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
- req = mdt_info_req(mti);
-
- if (mti->mti_mdt == NULL || req == NULL)
- return 0;
+ struct mdt_thread_info *mti;
- if (mti->mti_has_trans) {
- /* XXX: currently there are allowed cases, but the wrong cases
- * are also possible, so better check is needed here */
- CDEBUG(D_INFO, "More than one transaction "LPU64"\n",
- mti->mti_transno);
- return 0;
- }
-
- mti->mti_has_trans = 1;
- spin_lock(&mdt->mdt_lut.lut_translock);
- if (txn->th_result != 0) {
- if (mti->mti_transno != 0) {
- CERROR("Replay transno "LPU64" failed: rc %d\n",
- mti->mti_transno, txn->th_result);
- return 0;
- }
- } else if (mti->mti_transno == 0) {
- mti->mti_transno = ++ mdt->mdt_lut.lut_last_transno;
- } else {
- /* should be replay */
- if (mti->mti_transno > mdt->mdt_lut.lut_last_transno)
- mdt->mdt_lut.lut_last_transno = mti->mti_transno;
- }
- spin_unlock(&mdt->mdt_lut.lut_translock);
- /* sometimes the reply message has not been successfully packed */
- LASSERT(req != NULL && req->rq_repmsg != NULL);
-
- /** VBR: set new versions */
- if (txn->th_result == 0 && mti->mti_mos != NULL) {
- dt_version_set(env, mdt_obj2dt(mti->mti_mos),
- mti->mti_transno, txn);
- mti->mti_mos = NULL;
- }
+ 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);
- /* if can't add callback, do sync write */
- txn->th_sync |= !!tgt_last_commit_cb_add(txn, &mdt->mdt_lut,
- mti->mti_exp,
- mti->mti_transno);
- return mdt_last_rcvd_update(mti, txn);
+ 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)
{
- 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 = NULL;
- 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_txn_commit = NULL;
+ mdt->mdt_txn_cb.dtc_cookie = NULL;
+ mdt->mdt_txn_cb.dtc_tag = LCT_MD_THREAD;
+ INIT_LIST_HEAD(&mdt->mdt_txn_cb.dtc_linkage);
- rc = mdt_server_data_init(env, mdt, lsi);
+ dt_txn_callback_add(mdt->mdt_bottom, &mdt->mdt_txn_cb);
RETURN(rc);
}
static void mdt_steal_ack_locks(struct ptlrpc_request *req)
{
struct ptlrpc_service_part *svcpt;
- struct obd_export *exp = req->rq_export;
- cfs_list_t *tmp;
- struct ptlrpc_reply_state *oldrep;
- int i;
+ struct obd_export *exp = req->rq_export;
+ struct list_head *tmp;
+ struct ptlrpc_reply_state *oldrep;
+ int i;
- /* CAVEAT EMPTOR: spinlock order */
+ /* CAVEAT EMPTOR: spinlock order */
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);
+ list_for_each(tmp, &exp->exp_outstanding_replies) {
+ oldrep = list_entry(tmp, struct ptlrpc_reply_state,
+ rs_exp_list);
if (oldrep->rs_xid != req->rq_xid)
continue;
svcpt = oldrep->rs_svcpt;
spin_lock(&svcpt->scp_rep_lock);
- cfs_list_del_init (&oldrep->rs_exp_list);
+ list_del_init(&oldrep->rs_exp_list);
CDEBUG(D_HA, "Stealing %d locks from rs %p x"LPD64".t"LPD64
" o%d NID %s\n",
/**
* VBR: restore versions
*/
-void mdt_vbr_reconstruct(struct ptlrpc_request *req,
- struct lsd_client_data *lcd)
+static 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];
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_req_from_lcd(struct ptlrpc_request *req, struct lsd_client_data *lcd)
{
DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
lcd->lcd_last_transno, lcd->lcd_last_result);
return mdt_req_from_lcd(req, ted->ted_lcd);
}
+/**
+ * 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)
+{
+ 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)
{
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;
- }
+ /* if no error, so child was created with requested fid */
+ child = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid2);
+ if (IS_ERR(child)) {
+ rc = PTR_ERR(child);
+ LCONSOLE_WARN("cannot lookup child "DFID": rc = %d; "
+ "evicting client %s with export %s\n",
+ PFID(mti->mti_rr.rr_fid2), rc,
+ obd_uuid2str(&exp->exp_client_uuid),
+ obd_export_nid2str(exp));
+ mdt_export_evict(exp);
+ RETURN_EXIT;
+ }
body = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
mti->mti_attr.ma_need = MA_INODE;
mti->mti_attr.ma_valid = 0;
rc = mdt_attr_get_complex(mti, child, &mti->mti_attr);
- if (rc == -EREMOTE) {
- /* object was created on remote server */
- req->rq_status = rc;
- body->valid |= OBD_MD_MDS;
- }
- mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr,
- mdt_object_fid(child));
- mdt_object_put(mti->mti_env, child);
+ if (rc == -ENOENT) {
+ mdt_fake_ma(&mti->mti_attr);
+ } else if (rc == -EREMOTE) {
+ /* object was created on remote server */
+ if (!mdt_is_dne_client(exp))
+ /* Return -EIO for old client */
+ rc = -EIO;
+
+ req->rq_status = rc;
+ body->mbo_valid |= OBD_MD_MDS;
+ }
+ mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr,
+ mdt_object_fid(child));
+ mdt_object_put(mti->mti_env, child);
}
static void mdt_reconstruct_setattr(struct mdt_thread_info *mti,
struct mdt_device *mdt = mti->mti_mdt;
struct mdt_object *obj;
struct mdt_body *body;
+ int rc;
mdt_req_from_lcd(req, med->med_ted.ted_lcd);
if (req->rq_status)
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;
- mdt_attr_get_complex(mti, 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_body *repbody;
repbody = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
- repbody->ioepoch = obj->mot_ioepoch;
+ repbody->mbo_ioepoch = obj->mot_ioepoch;
spin_lock(&med->med_open_lock);
- cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
+ list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
if (mfd->mfd_xid == req->rq_xid)
break;
}
LASSERT(&mfd->mfd_list != &med->med_open_head);
spin_unlock(&med->med_open_lock);
- repbody->handle.cookie = mfd->mfd_handle.h_cookie;
+ repbody->mbo_handle.cookie = mfd->mfd_handle.h_cookie;
}
mdt_object_put(mti->mti_env, obj);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff