* 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.
*/
/*
LASSERT(handle != NULL);
mfd = class_handle2object(handle->cookie);
/* during dw/setattr replay the mfd can be found by old handle */
- if (mfd == NULL &&
- lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+ if (mfd == NULL && req_is_replay(req)) {
struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
- list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
+ cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
if (mfd->mfd_old_handle.cookie == handle->cookie)
RETURN (mfd);
}
/* free mfd */
void mdt_mfd_free(struct mdt_file_data *mfd)
{
- LASSERT(list_empty(&mfd->mfd_list));
+ LASSERT(cfs_list_empty(&mfd->mfd_list));
OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
}
RETURN(rc);
}
-static int mdt_epoch_opened(struct mdt_object *mo)
+static int mdt_ioepoch_opened(struct mdt_object *mo)
{
- return mo->mot_epochcount;
+ return mo->mot_ioepoch_count;
}
-int mdt_sizeonmds_enabled(struct mdt_object *mo)
+int mdt_object_is_som_enabled(struct mdt_object *mo)
{
return !mo->mot_ioepoch;
}
-/* Re-enable Size-on-MDS. */
-void mdt_sizeonmds_enable(struct mdt_thread_info *info,
- struct mdt_object *mo)
+/**
+ * Re-enable Size-on-MDS.
+ * Call under ->mot_ioepoch_sem.
+ */
+static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
{
- spin_lock(&info->mti_mdt->mdt_ioepoch_lock);
- if (info->mti_epoch->ioepoch == mo->mot_ioepoch) {
- LASSERT(!mdt_epoch_opened(mo));
+ if (ioepoch == mo->mot_ioepoch) {
+ LASSERT(!mdt_ioepoch_opened(mo));
mo->mot_ioepoch = 0;
mo->mot_flags = 0;
- }
- spin_unlock(&info->mti_mdt->mdt_ioepoch_lock);
+ }
}
-/* Open the epoch. Epoch open is allowed if @writecount is not negative.
- * The epoch and writecount handling is performed under the mdt_ioepoch_lock. */
-int mdt_epoch_open(struct mdt_thread_info *info, struct mdt_object *o)
+/**
+ * Open the IOEpoch. It is allowed if @writecount is not negative.
+ * The epoch and writecount handling is performed under the mot_ioepoch_sem.
+ */
+int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
+ int created)
{
struct mdt_device *mdt = info->mti_mdt;
int cancel = 0;
!S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
RETURN(0);
- spin_lock(&mdt->mdt_ioepoch_lock);
- if (mdt_epoch_opened(o)) {
+ cfs_down(&o->mot_ioepoch_sem);
+ if (mdt_ioepoch_opened(o)) {
/* Epoch continues even if there is no writers yet. */
CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
o->mot_ioepoch, PFID(mdt_object_fid(o)));
} else {
- if (info->mti_replayepoch > mdt->mdt_ioepoch)
+ /* XXX: ->mdt_ioepoch is not initialized at the mount */
+ cfs_spin_lock(&mdt->mdt_ioepoch_lock);
+ if (mdt->mdt_ioepoch < info->mti_replayepoch)
mdt->mdt_ioepoch = info->mti_replayepoch;
+
+ if (info->mti_replayepoch)
+ o->mot_ioepoch = info->mti_replayepoch;
+ else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
+ o->mot_ioepoch = ++mdt->mdt_ioepoch;
else
- mdt->mdt_ioepoch++;
- o->mot_ioepoch = info->mti_replayepoch ?
- info->mti_replayepoch : mdt->mdt_ioepoch;
+ o->mot_ioepoch = mdt->mdt_ioepoch;
+
+ cfs_spin_unlock(&mdt->mdt_ioepoch_lock);
+
CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
- mdt->mdt_ioepoch, PFID(mdt_object_fid(o)));
+ o->mot_ioepoch, PFID(mdt_object_fid(o)));
+ if (created)
+ o->mot_flags |= MOF_SOM_CREATED;
cancel = 1;
}
- o->mot_epochcount++;
- spin_unlock(&mdt->mdt_ioepoch_lock);
+ o->mot_ioepoch_count++;
+ cfs_up(&o->mot_ioepoch_sem);
- /* Cancel Size-on-MDS attributes on clients if not truncate.
- * In the later case, mdt_reint_setattr will do it. */
+ /* Cancel Size-on-MDS attributes cached on clients for the open case.
+ * In the truncate case, see mdt_reint_setattr(). */
if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
mdt_lock_reg_init(lh, LCK_EX);
RETURN(rc);
}
-/* Update the on-disk attributes if needed and re-enable Size-on-MDS caching. */
-static int mdt_sizeonmds_update(struct mdt_thread_info *info,
- struct mdt_object *o)
+/**
+ * Update SOM on-disk attributes.
+ * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
+ * mountid and attributes. If disabling, zero IOEpoch id in lustre-ea.
+ * Call under ->mot_ioepoch_sem.
+ */
+static int mdt_som_attr_set(struct mdt_thread_info *info,
+ struct mdt_object *obj, __u64 ioepoch, int enable)
{
+ struct md_attr *ma = &info->mti_attr;
+ int rc;
ENTRY;
- CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
- o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_epochcount);
-
- if (info->mti_attr.ma_attr.la_valid & LA_SIZE) {
- /* Do Size-on-MDS attribute update.
- * Size-on-MDS is re-enabled inside. */
- /* XXX: since we have opened the file, it is unnecessary
- * to check permission when close it. Between the "open"
- * and "close", maybe someone has changed the file mode
- * or flags, or the file created mode do not permit wirte,
- * and so on. Just set MDS_PERM_BYPASS for all the cases. */
- info->mti_attr.ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM;
- info->mti_attr.ma_attr.la_valid &= LA_SIZE | LA_BLOCKS |
- LA_ATIME | LA_MTIME | LA_CTIME;
- RETURN(mdt_attr_set(info, o, 0));
- } else
- mdt_sizeonmds_enable(info, o);
- RETURN(0);
+ CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
+ " on "DFID".\n", enable ? "update" : "disabling",
+ ioepoch, PFID(mdt_object_fid(obj)));
+
+ ma->ma_valid |= MA_SOM;
+ ma->ma_som = &info->mti_u.som.data;
+ if (enable) {
+ struct mdt_device *mdt = info->mti_mdt;
+ struct lu_attr *la = &ma->ma_attr;
+
+ ma->ma_som->msd_ioepoch = ioepoch;
+ ma->ma_som->msd_size = la->la_valid & LA_SIZE ? la->la_size : 0;
+ ma->ma_som->msd_blocks = la->la_valid & LA_BLOCKS ?
+ la->la_blocks : 0;
+ ma->ma_som->msd_mountid = mdt->mdt_lut.lut_mount_count;
+ ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
+ } else {
+ ma->ma_som->msd_ioepoch = IOEPOCH_INVAL;
+ ma->ma_attr.la_valid &= LA_ATIME;
+ }
+
+ /* Since we have opened the file, it is unnecessary
+ * to check permission when close it. Between the "open"
+ * and "close", maybe someone has changed the file mode
+ * or flags, or the file created mode do not permit wirte,
+ * and so on. Just set MDS_PERM_BYPASS for all the cases. */
+ ma->ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM;
+
+ rc = mdt_attr_set(info, obj, ma, 0);
+ RETURN(rc);
+}
+
+/** Perform the eviction specific actions on ioepoch close. */
+static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
+ struct mdt_object *o)
+{
+ int rc = 0;
+
+ cfs_down(&o->mot_ioepoch_sem);
+ CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
+ "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
+ o->mot_ioepoch_count);
+ o->mot_ioepoch_count--;
+
+ /* If eviction occured set MOF_SOM_RECOV,
+ * if no other epoch holders, disable SOM on disk. */
+ o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
+ if (!mdt_ioepoch_opened(o)) {
+ rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
+ mdt_object_som_enable(o, o->mot_ioepoch);
+ }
+ cfs_up(&o->mot_ioepoch_sem);
+ RETURN(rc);
}
-/* Epoch closes.
- * Returns 1 if epoch does not close.
- * Returns 0 if epoch closes.
- * Returns -EAGAIN if epoch closes but an Size-on-MDS Update is still needed
- * from the client. */
-static int mdt_epoch_close(struct mdt_thread_info *info, struct mdt_object *o)
+/**
+ * Perform the replay specific actions on ioepoch close.
+ * Skip SOM attribute update if obtained and just forget about the inode state
+ * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
+ */
+static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
+ struct mdt_object *o)
{
- int eviction = (mdt_info_req(info) == NULL ? 1 : 0);
- struct lu_attr *la = &info->mti_attr.ma_attr;
- int achange = 0;
- int opened;
- int rc = 1;
+ int rc = MDT_IOEPOCH_CLOSED;
ENTRY;
- if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
- !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
- RETURN(0);
+ cfs_down(&o->mot_ioepoch_sem);
+ CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
+ o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
+ o->mot_ioepoch_count--;
- spin_lock(&info->mti_mdt->mdt_ioepoch_lock);
+ /* Get an info from the replayed request if client is supposed
+ * to send an Attibute Update, reconstruct @rc if so */
+ if (info->mti_ioepoch->flags & MF_SOM_AU)
+ rc = MDT_IOEPOCH_GETATTR;
- /* Epoch closes only if client tells about it or eviction occures. */
- if (eviction || (info->mti_epoch->flags & MF_EPOCH_CLOSE)) {
- LASSERT(o->mot_epochcount);
- o->mot_epochcount--;
+ if (!mdt_ioepoch_opened(o))
+ mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
+ cfs_up(&o->mot_ioepoch_sem);
- CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
- o->mot_ioepoch, PFID(mdt_object_fid(o)),
- o->mot_epochcount);
+ RETURN(rc);
+}
- if (!eviction)
- achange = (info->mti_epoch->flags & MF_SOM_CHANGE);
+/**
+ * Regular file IOepoch close.
+ * Closes the ioepoch, checks the object state, apply obtained attributes and
+ * re-enable SOM on the object, if possible. Also checks if the recovery is
+ * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
+ * to obtain SOM attributes under the server-side OST locks.
+ *
+ * Return value:
+ * MDT_IOEPOCH_CLOSED if ioepoch is closed.
+ * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
+ */
+static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
+ struct mdt_object *o)
+{
+ struct md_attr *tmp_ma;
+ struct lu_attr *la;
+ int achange, opened;
+ int recovery = 0;
+ int rc = 0, ret = MDT_IOEPOCH_CLOSED;
+ ENTRY;
- rc = 0;
- if (!eviction && !mdt_epoch_opened(o)) {
- /* Epoch ends. Is an Size-on-MDS update needed? */
- if (o->mot_flags & MF_SOM_CHANGE) {
- /* Some previous writer changed the attribute.
- * Do not believe to the current Size-on-MDS
- * update, re-ask client. */
- rc = -EAGAIN;
- } else if (!(la->la_valid & LA_SIZE) && achange) {
- /* Attributes were changed by the last writer
- * only but no Size-on-MDS update is received.*/
- rc = -EAGAIN;
- }
+ la = &info->mti_attr.ma_attr;
+ achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
+
+ cfs_down(&o->mot_ioepoch_sem);
+ o->mot_ioepoch_count--;
+
+ tmp_ma = &info->mti_u.som.attr;
+ tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
+ tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
+ tmp_ma->ma_som = &info->mti_u.som.data;
+ tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
+ tmp_ma->ma_valid = 0;
+ rc = mo_attr_get(info->mti_env, mdt_object_child(o), tmp_ma);
+ if (rc)
+ GOTO(error_up, rc);
+
+ /* Check the on-disk SOM state. */
+ if (o->mot_flags & MOF_SOM_RECOV)
+ recovery = 1;
+ else if (!(o->mot_flags & MOF_SOM_CREATED) &&
+ !(tmp_ma->ma_valid & MA_SOM))
+ recovery = 1;
+
+ CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
+ o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
+
+ opened = mdt_ioepoch_opened(o);
+ /**
+ * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
+ * Skip the check for file with no LOV or for unlink files.
+ */
+ if (!opened && tmp_ma->ma_valid & MA_LOV &&
+ !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
+ if (recovery)
+ /* If some previous writer was evicted, re-ask the
+ * client for attributes. Even if attributes are
+ * provided, we cannot believe in them.
+ * Another use case is that there is no SOM cache on
+ * disk -- first access with SOM or there was an MDS
+ * failure. */
+ ret = MDT_IOEPOCH_GETATTR;
+ else if (o->mot_flags & MOF_SOM_CHANGE)
+ /* Some previous writer changed the attribute.
+ * Do not believe to the current Size-on-MDS
+ * update, re-ask client. */
+ ret = MDT_IOEPOCH_GETATTR;
+ else if (!(la->la_valid & LA_SIZE) && achange)
+ /* Attributes were changed by the last writer
+ * only but no Size-on-MDS update is received.*/
+ ret = MDT_IOEPOCH_GETATTR;
+ }
+
+ if (achange || ret == MDT_IOEPOCH_GETATTR)
+ o->mot_flags |= MOF_SOM_CHANGE;
+
+ /* If epoch ends and relable SOM attributes are obtained, update them.
+ * Create SOM ea for new files even if there is no attributes obtained
+ * (0-length file). */
+ if (ret == MDT_IOEPOCH_CLOSED && !opened) {
+ if (achange || o->mot_flags & MOF_SOM_CREATED) {
+ LASSERT(achange || !(la->la_valid & LA_SIZE));
+ rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
+ MDT_SOM_ENABLE);
+ /* Avoid the following setattrs of these attributes,
+ * e.g. for atime update. */
+ info->mti_attr.ma_valid = 0;
}
+ mdt_object_som_enable(o, o->mot_ioepoch);
+ }
- if (achange || eviction)
- o->mot_flags |= MF_SOM_CHANGE;
+ cfs_up(&o->mot_ioepoch_sem);
+ /* If recovery is needed, tell the client to perform GETATTR under
+ * the lock. */
+ if (ret == MDT_IOEPOCH_GETATTR && recovery) {
+ struct mdt_body *rep;
+ rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
+ rep->valid |= OBD_MD_FLGETATTRLOCK;
}
- opened = mdt_epoch_opened(o);
- spin_unlock(&info->mti_mdt->mdt_ioepoch_lock);
+ RETURN(rc ? : ret);
- /* If eviction occurred, do nothing. */
- if ((rc == 0) && !opened && !eviction) {
- /* Epoch ends and wanted Size-on-MDS update is obtained. */
- rc = mdt_sizeonmds_update(info, o);
- /* Avoid the following setattrs of these attributes, e.g.
- * for atime update. */
- info->mti_attr.ma_valid = 0;
+error_up:
+ cfs_up(&o->mot_ioepoch_sem);
+ return rc;
+}
+
+/**
+ * Close IOEpoch (opened file or FMODE_EPOCH state). It happens if:
+ * - a client closes the IOEpoch;
+ * - a client eviction occured.
+ * Return values:
+ * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
+ * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
+ * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
+ * update is needed.
+ */
+static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
+{
+ struct ptlrpc_request *req = mdt_info_req(info);
+ ENTRY;
+
+ if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
+ !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
+ RETURN(0);
+
+ LASSERT(o->mot_ioepoch_count);
+ LASSERT(info->mti_ioepoch == NULL ||
+ info->mti_ioepoch->ioepoch == o->mot_ioepoch);
+
+ /* IOEpoch is closed only if client tells about it or eviction occures.
+ * In the replay case, always close the epoch. */
+ if (req == NULL)
+ RETURN(mdt_ioepoch_close_on_eviction(info, o));
+ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
+ RETURN(mdt_ioepoch_close_on_replay(info, o));
+ if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
+ RETURN(mdt_ioepoch_close_reg(info, o));
+ /* IO epoch is not closed. */
+ RETURN(MDT_IOEPOCH_OPENED);
+}
+
+/**
+ * Close FMODE_SOM state, when IOEpoch is already closed and we are waiting for
+ * attribute update. It happens if:
+ * - SOM Attribute Update is obtained;
+ * - the client failed to obtain it and informs MDS about it;
+ * - a client eviction occured.
+ * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
+ * cache otherwise.
+ */
+int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
+{
+ struct ptlrpc_request *req = mdt_info_req(info);
+ __u64 ioepoch = 0;
+ int act = MDT_SOM_ENABLE;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(!req || info->mti_ioepoch);
+ if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
+ !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
+ RETURN(0);
+
+ /* No size whereas MF_SOM_CHANGE is set means client failed to
+ * obtain ost attributes, drop the SOM cache on disk if so. */
+ if (!req ||
+ (info->mti_ioepoch &&
+ info->mti_ioepoch->flags & MF_SOM_CHANGE &&
+ !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
+ act = MDT_SOM_DISABLE;
+
+ cfs_down(&o->mot_ioepoch_sem);
+ /* Mark the object it is the recovery state if we failed to obtain
+ * SOM attributes. */
+ if (act == MDT_SOM_DISABLE)
+ o->mot_flags |= MOF_SOM_RECOV;
+
+ if (!mdt_ioepoch_opened(o)) {
+ ioepoch = info->mti_ioepoch ?
+ info->mti_ioepoch->ioepoch : o->mot_ioepoch;
+
+ if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
+ rc = mdt_som_attr_set(info, o, ioepoch, act);
+ mdt_object_som_enable(o, ioepoch);
}
+ cfs_up(&o->mot_ioepoch_sem);
RETURN(rc);
}
-int mdt_write_read(struct mdt_device *mdt, struct mdt_object *o)
+int mdt_write_read(struct mdt_object *o)
{
int rc = 0;
ENTRY;
- spin_lock(&mdt->mdt_ioepoch_lock);
+ cfs_down(&o->mot_ioepoch_sem);
rc = o->mot_writecount;
- spin_unlock(&mdt->mdt_ioepoch_lock);
+ cfs_up(&o->mot_ioepoch_sem);
RETURN(rc);
}
-int mdt_write_get(struct mdt_device *mdt, struct mdt_object *o)
+int mdt_write_get(struct mdt_object *o)
{
int rc = 0;
ENTRY;
- spin_lock(&mdt->mdt_ioepoch_lock);
+ cfs_down(&o->mot_ioepoch_sem);
if (o->mot_writecount < 0)
rc = -ETXTBSY;
else
o->mot_writecount++;
- spin_unlock(&mdt->mdt_ioepoch_lock);
+ cfs_up(&o->mot_ioepoch_sem);
RETURN(rc);
}
-static void mdt_write_put(struct mdt_device *mdt, struct mdt_object *o)
+void mdt_write_put(struct mdt_object *o)
{
ENTRY;
- spin_lock(&mdt->mdt_ioepoch_lock);
+ cfs_down(&o->mot_ioepoch_sem);
o->mot_writecount--;
- spin_unlock(&mdt->mdt_ioepoch_lock);
+ cfs_up(&o->mot_ioepoch_sem);
EXIT;
}
-static int mdt_write_deny(struct mdt_device *mdt, struct mdt_object *o)
+static int mdt_write_deny(struct mdt_object *o)
{
int rc = 0;
ENTRY;
- spin_lock(&mdt->mdt_ioepoch_lock);
+ cfs_down(&o->mot_ioepoch_sem);
if (o->mot_writecount > 0)
rc = -ETXTBSY;
else
o->mot_writecount--;
- spin_unlock(&mdt->mdt_ioepoch_lock);
+ cfs_up(&o->mot_ioepoch_sem);
RETURN(rc);
}
-static void mdt_write_allow(struct mdt_device *mdt, struct mdt_object *o)
+static void mdt_write_allow(struct mdt_object *o)
{
ENTRY;
- spin_lock(&mdt->mdt_ioepoch_lock);
+ cfs_down(&o->mot_ioepoch_sem);
o->mot_writecount++;
- spin_unlock(&mdt->mdt_ioepoch_lock);
+ cfs_up(&o->mot_ioepoch_sem);
EXIT;
}
return;
}
- spin_lock(&mdt->mdt_transno_lock);
+ cfs_spin_lock(&mdt->mdt_lut.lut_translock);
if (info->mti_transno == 0) {
- info->mti_transno = ++ mdt->mdt_last_transno;
+ info->mti_transno = ++ mdt->mdt_lut.lut_last_transno;
} else {
/* should be replay */
- if (info->mti_transno > mdt->mdt_last_transno)
- mdt->mdt_last_transno = info->mti_transno;
+ if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
+ mdt->mdt_lut.lut_last_transno = info->mti_transno;
}
- spin_unlock(&mdt->mdt_transno_lock);
+ cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
- CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n",
+ CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
info->mti_transno,
req->rq_export->exp_obd->obd_last_committed);
req->rq_transno = info->mti_transno;
lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
- lustre_msg_set_last_xid(req->rq_repmsg, req->rq_xid);
EXIT;
}
}
if (flags & FMODE_WRITE) {
- rc = mdt_write_get(info->mti_mdt, o);
+ rc = mdt_write_get(o);
if (rc == 0) {
- mdt_epoch_open(info, o);
+ mdt_ioepoch_open(info, o, created);
repbody->ioepoch = o->mot_ioepoch;
}
} else if (flags & MDS_FMODE_EXEC) {
- rc = mdt_write_deny(info->mti_mdt, o);
+ rc = mdt_write_deny(o);
}
if (rc)
RETURN(rc);
mfd->mfd_xid = req->rq_xid;
/* replay handle */
- if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+ if (req_is_replay(req)) {
struct mdt_file_data *old_mfd;
/* Check wheather old cookie already exist in
* the list, becasue when do recovery, client
mfd,
PFID(mdt_object_fid(mfd->mfd_object)),
info->mti_rr.rr_handle->cookie);
- spin_lock(&med->med_open_lock);
+ cfs_spin_lock(&med->med_open_lock);
class_handle_unhash(&old_mfd->mfd_handle);
- list_del_init(&old_mfd->mfd_list);
- spin_unlock(&med->med_open_lock);
+ cfs_list_del_init(&old_mfd->mfd_list);
+ cfs_spin_unlock(&med->med_open_lock);
mdt_mfd_close(info, old_mfd);
}
CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
repbody->handle.cookie = mfd->mfd_handle.h_cookie;
if (req->rq_export->exp_disconnected) {
- spin_lock(&med->med_open_lock);
+ cfs_spin_lock(&med->med_open_lock);
class_handle_unhash(&mfd->mfd_handle);
- list_del_init(&mfd->mfd_list);
- spin_unlock(&med->med_open_lock);
+ cfs_list_del_init(&mfd->mfd_list);
+ cfs_spin_unlock(&med->med_open_lock);
mdt_mfd_close(info, mfd);
} else {
- spin_lock(&med->med_open_lock);
- list_add(&mfd->mfd_list, &med->med_open_head);
- spin_unlock(&med->med_open_lock);
+ cfs_spin_lock(&med->med_open_lock);
+ cfs_list_add(&mfd->mfd_list, &med->med_open_head);
+ cfs_spin_unlock(&med->med_open_lock);
}
mdt_empty_transno(info);
struct mdt_body *repbody;
int rc = 0;
int isreg, isdir, islnk;
- struct list_head *t;
+ cfs_list_t *t;
ENTRY;
LASSERT(ma->ma_valid & MA_INODE);
mfd = NULL;
if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
- spin_lock(&med->med_open_lock);
- list_for_each(t, &med->med_open_head) {
- mfd = list_entry(t, struct mdt_file_data, mfd_list);
+ cfs_spin_lock(&med->med_open_lock);
+ cfs_list_for_each(t, &med->med_open_head) {
+ mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
if (mfd->mfd_xid == req->rq_xid) {
break;
}
mfd = NULL;
}
- spin_unlock(&med->med_open_lock);
+ cfs_spin_unlock(&med->med_open_lock);
if (mfd != NULL) {
repbody->handle.cookie = mfd->mfd_handle.h_cookie;
struct mdt_device *mdt = info->mti_mdt;
struct req_capsule *pill = info->mti_pill;
struct ptlrpc_request *req = mdt_info_req(info);
- struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
- struct lsd_client_data *lcd = med->med_lcd;
+ struct tg_export_data *ted = &req->rq_export->exp_target_data;
+ struct lsd_client_data *lcd = ted->ted_lcd;
struct md_attr *ma = &info->mti_attr;
struct mdt_reint_record *rr = &info->mti_rr;
__u32 flags = info->mti_spec.sp_cr_flags;
ma->ma_valid = 0;
- mdt_req_from_lcd(req, med->med_lcd);
+ mdt_req_from_lcd(req, lcd);
mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
CERROR("This is reconstruct open: disp="LPX64", result=%d\n",
mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
- if (!(flags & MDS_OPEN_LOCK))
+ if (!(flags & MDS_OPEN_LOCK) || rc)
mdt_object_unlock(info, o, lhc, 1);
GOTO(out, rc);
LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
- /* JOIN file was deprecated since 1.6.5, but may be revived one day */
- if (create_flags & MDS_OPEN_JOIN_FILE) {
- CERROR("file join is unsupported in this version of Lustre\n");
+ if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
+ CERROR("file join is not supported anymore.\n");
GOTO(out, result = err_serious(-EOPNOTSUPP));
}
msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
PFID(rr->rr_fid2), create_flags,
ma->ma_attr.la_mode, msg_flags);
- if (msg_flags & MSG_REPLAY ||
+ if (req_is_replay(req) ||
(req->rq_export->exp_libclient && create_flags&MDS_OPEN_HAS_EA)) {
/* This is a replay request or from liblustre with ea. */
result = mdt_open_by_fid(info, ldlm_rep);
}
CDEBUG(D_INFO, "Open replay did find object, continue as "
"regular open\n");
- } else if (rr->rr_namelen == 0 && !info->mti_cross_ref) {
+ } else if (rr->rr_namelen == 0 && !info->mti_cross_ref &&
+ create_flags & MDS_OPEN_LOCK) {
result = mdt_open_anon_by_fid(info, ldlm_rep, lhc);
- if (result != -ENOENT)
- GOTO(out, result);
+ GOTO(out, result);
}
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
if (IS_ERR(parent))
GOTO(out, result = PTR_ERR(parent));
+ /* get and check version of parent */
+ result = mdt_version_get_check(info, parent, 0);
+ if (result)
+ GOTO(out_parent, result);
+
fid_zero(child_fid);
lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
-
result = mdo_lookup(info->mti_env, mdt_object_child(parent),
lname, child_fid, &info->mti_spec);
LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
if (IS_ERR(child))
GOTO(out_parent, result = PTR_ERR(child));
+ /** check version of child */
+ rc = mdt_version_get_check(info, child, 1);
+ if (rc)
+ GOTO(out_child, result = rc);
+
mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
if (result == -ENOENT) {
+ /* save versions in reply */
+ mdt_version_get_save(info, parent, 0);
+ mdt_version_get_save(info, child, 1);
+
+ /* version of child will be changed */
+ info->mti_mos = child;
+
/* Not found and with MDS_OPEN_CREAT: let's create it. */
mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
- info->mti_mos[0] = parent;
- info->mti_mos[1] = child;
- result = mdt_version_get_check(info, 0);
- if (result)
- GOTO(out_child, result);
-
/* Let lower layers know what is lock mode on directory. */
info->mti_spec.sp_cr_mode =
mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
/* get openlock if this is not replay and if a client requested it */
- if (!(msg_flags & MSG_REPLAY) && create_flags & MDS_OPEN_LOCK) {
+ if (!req_is_replay(req) && create_flags & MDS_OPEN_LOCK) {
ldlm_mode_t lm;
- LASSERT(!created);
if (create_flags & FMODE_WRITE)
lm = LCK_CW;
else if (create_flags & MDS_FMODE_EXEC)
out_child:
mdt_object_put(info->mti_env, child);
out_parent:
- mdt_object_unlock_put(info, parent, lh, result);
+ mdt_object_unlock_put(info, parent, lh, result || !created);
out:
if (result && result != -EREMOTE)
lustre_msg_set_transno(req->rq_repmsg, 0);
}
#define MFD_CLOSED(mode) (((mode) & ~(FMODE_EPOCH | FMODE_SOM | \
- FMODE_EPOCHLCK)) == FMODE_CLOSED)
+ FMODE_TRUNC)) == FMODE_CLOSED)
static int mdt_mfd_closed(struct mdt_file_data *mfd)
{
struct mdt_object *o = mfd->mfd_object;
struct md_object *next = mdt_object_child(o);
struct md_attr *ma = &info->mti_attr;
- int rc = 0, ret = 0;
+ int ret = MDT_IOEPOCH_CLOSED;
+ int rc = 0;
int mode;
ENTRY;
mode = mfd->mfd_mode;
- if ((mode & FMODE_WRITE) || (mode & FMODE_EPOCHLCK)) {
- mdt_write_put(info->mti_mdt, o);
- ret = mdt_epoch_close(info, o);
+ if ((mode & FMODE_WRITE) || (mode & FMODE_TRUNC)) {
+ mdt_write_put(o);
+ ret = mdt_ioepoch_close(info, o);
} else if (mode & MDS_FMODE_EXEC) {
- mdt_write_allow(info->mti_mdt, o);
+ mdt_write_allow(o);
} else if (mode & FMODE_EPOCH) {
- ret = mdt_epoch_close(info, o);
+ ret = mdt_ioepoch_close(info, o);
+ } else if (mode & FMODE_SOM) {
+ ret = mdt_som_au_close(info, o);
}
/* Update atime on close only. */
if (!MFD_CLOSED(mode))
rc = mo_close(info->mti_env, next, ma);
- else if (ret == -EAGAIN)
- rc = mo_attr_get(info->mti_env, next, ma);
- /* If the object is unlinked, do not try to re-enable SIZEONMDS */
- if ((ret == -EAGAIN) && (ma->ma_valid & MA_INODE) &&
- (ma->ma_attr.la_nlink == 0)) {
- ret = 0;
- }
-
- if ((ret == -EAGAIN) || (ret == 1)) {
+ if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
struct mdt_export_data *med;
- /* The epoch has not closed or Size-on-MDS update is needed.
+ /* The IOepoch is still opened or SOM update is needed.
* Put mfd back into the list. */
LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
- mdt_mfd_set_mode(mfd, (ret == 1 ? FMODE_EPOCH : FMODE_SOM));
+ mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
+ FMODE_EPOCH : FMODE_SOM);
LASSERT(mdt_info_req(info));
med = &mdt_info_req(info)->rq_export->exp_mdt_data;
- spin_lock(&med->med_open_lock);
- list_add(&mfd->mfd_list, &med->med_open_head);
+ cfs_spin_lock(&med->med_open_lock);
+ cfs_list_add(&mfd->mfd_list, &med->med_open_head);
class_handle_hash_back(&mfd->mfd_handle);
- spin_unlock(&med->med_open_lock);
+ cfs_spin_unlock(&med->med_open_lock);
- if (ret == 1) {
+ if (ret == MDT_IOEPOCH_OPENED) {
ret = 0;
} else {
+ ret = -EAGAIN;
CDEBUG(D_INODE, "Size-on-MDS attribute update is "
"needed on "DFID"\n", PFID(mdt_object_fid(o)));
}
if (rc)
RETURN(err_serious(rc));
- LASSERT(info->mti_epoch);
+ LASSERT(info->mti_ioepoch);
req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
info->mti_mdt->mdt_max_mdsize);
}
med = &req->rq_export->exp_mdt_data;
- spin_lock(&med->med_open_lock);
- mfd = mdt_handle2mfd(info, &info->mti_epoch->handle);
+ cfs_spin_lock(&med->med_open_lock);
+ mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
if (mdt_mfd_closed(mfd)) {
- spin_unlock(&med->med_open_lock);
+ cfs_spin_unlock(&med->med_open_lock);
CDEBUG(D_INODE, "no handle for file close: fid = "DFID
": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
- info->mti_epoch->handle.cookie);
+ info->mti_ioepoch->handle.cookie);
/** not serious error since bug 3633 */
rc = -ESTALE;
} else {
class_handle_unhash(&mfd->mfd_handle);
- list_del_init(&mfd->mfd_list);
- spin_unlock(&med->med_open_lock);
+ cfs_list_del_init(&mfd->mfd_list);
+ cfs_spin_unlock(&med->med_open_lock);
/* Do not lose object before last unlink. */
o = mfd->mfd_object;
RETURN(rc ? rc : ret);
}
+/**
+ * DONE_WRITING rpc handler.
+ *
+ * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
+ * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
+ * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
+ * skip attributes and reconstruct the reply here.
+ */
int mdt_done_writing(struct mdt_thread_info *info)
{
+ struct ptlrpc_request *req = mdt_info_req(info);
struct mdt_body *repbody = NULL;
struct mdt_export_data *med;
struct mdt_file_data *mfd;
RETURN(err_serious(rc));
if (mdt_check_resent(info, mdt_reconstruct_generic, NULL))
- RETURN(lustre_msg_get_status(mdt_info_req(info)->rq_repmsg));
+ RETURN(lustre_msg_get_status(req->rq_repmsg));
med = &info->mti_exp->exp_mdt_data;
- spin_lock(&med->med_open_lock);
- mfd = mdt_handle2mfd(info, &info->mti_epoch->handle);
+ cfs_spin_lock(&med->med_open_lock);
+ mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
if (mfd == NULL) {
- spin_unlock(&med->med_open_lock);
+ cfs_spin_unlock(&med->med_open_lock);
CDEBUG(D_INODE, "no handle for done write: fid = "DFID
": cookie = "LPX64" ioepoch = "LPU64"\n",
PFID(info->mti_rr.rr_fid1),
- info->mti_epoch->handle.cookie,
- info->mti_epoch->ioepoch);
+ info->mti_ioepoch->handle.cookie,
+ info->mti_ioepoch->ioepoch);
+ /* If this is a replay, reconstruct the transno. */
+ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+ mdt_empty_transno(info);
+ RETURN(info->mti_ioepoch->flags & MF_SOM_AU ?
+ -EAGAIN : 0);
+ }
RETURN(-ESTALE);
}
LASSERT(mfd->mfd_mode == FMODE_EPOCH ||
- mfd->mfd_mode == FMODE_EPOCHLCK);
+ mfd->mfd_mode == FMODE_TRUNC);
class_handle_unhash(&mfd->mfd_handle);
- list_del_init(&mfd->mfd_list);
- spin_unlock(&med->med_open_lock);
+ cfs_list_del_init(&mfd->mfd_list);
+ cfs_spin_unlock(&med->med_open_lock);
/* Set EPOCH CLOSE flag if not set by client. */
- info->mti_epoch->flags |= MF_EPOCH_CLOSE;
+ info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
info->mti_attr.ma_valid = 0;
+
+ info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
+ OBD_ALLOC(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
+ if (info->mti_attr.ma_lmm == NULL)
+ RETURN(-ENOMEM);
+
rc = mdt_mfd_close(info, mfd);
+
+ OBD_FREE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
mdt_empty_transno(info);
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff