#define LAST_RCVD "last_rcvd"
#define LOV_OBJID "lov_objid"
+#define LAST_FID "last_fid"
/* 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).
free_and_out:
OBD_FREE(med->med_mcd, sizeof(*med->med_mcd));
-
return 0;
}
return 0;
}
+static int mds_read_last_fid(struct obd_device *obd, struct file *file)
+{
+ int rc = 0;
+ loff_t off = 0;
+ struct mds_obd *mds = &obd->u.mds;
+ unsigned long last_fid_size = file->f_dentry->d_inode->i_size;
+ ENTRY;
+
+ if (last_fid_size == 0) {
+ CWARN("%s: initializing new %s\n", obd->obd_name,
+ file->f_dentry->d_name.name);
+
+ /*
+ * as fid is used for forming res_id for locking, it should not
+ * be zero. This will keep us out of lots possible problems,
+ * asserts, etc.
+ */
+ mds_set_last_fid(obd, 0);
+ } else {
+ __u64 lastfid;
+
+ rc = fsfilt_read_record(obd, file, &lastfid,
+ sizeof(lastfid), &off);
+ if (rc) {
+ CERROR("error reading MDS %s: rc = %d\n",
+ file->f_dentry->d_name.name, rc);
+ RETURN(rc);
+ }
+
+ /*
+ * make sure, that fid is up-to-date.
+ */
+ mds_set_last_fid(obd, lastfid);
+ }
+
+ CDEBUG(D_INODE, "%s: server last_fid: "LPU64"\n",
+ obd->obd_name, mds->mds_last_fid);
+
+ rc = mds_update_last_fid(obd, NULL, 1);
+ RETURN(rc);
+}
+
static int mds_read_last_rcvd(struct obd_device *obd, struct file *file)
{
struct mds_obd *mds = &obd->u.mds;
mds->mds_server_data = msd;
if (last_rcvd_size == 0) {
- CWARN("%s: initializing new %s\n", obd->obd_name, LAST_RCVD);
+ CWARN("%s: initializing new %s\n", obd->obd_name,
+ file->f_dentry->d_name.name);
memcpy(msd->msd_uuid, obd->obd_uuid.uuid,sizeof(msd->msd_uuid));
msd->msd_last_transno = 0;
} else {
rc = fsfilt_read_record(obd, file, msd, sizeof(*msd), &off);
if (rc) {
- CERROR("error reading MDS %s: rc = %d\n", LAST_RCVD, rc);
+ CERROR("error reading MDS %s: rc = %d\n",
+ file->f_dentry->d_name.name, rc);
GOTO(err_msd, rc);
}
if (strcmp(msd->msd_uuid, obd->obd_uuid.uuid) != 0) {
rc = fsfilt_read_record(obd, file, mcd, sizeof(*mcd), &off);
if (rc) {
CERROR("error reading MDS %s idx %d, off %llu: rc %d\n",
- LAST_RCVD, cl_idx, off, rc);
+ file->f_dentry->d_name.name, cl_idx, off, rc);
break; /* read error shouldn't cause startup to fail */
}
RETURN(rc);
}
-static int mds_fs_post_setup(struct obd_device *obd)
+static int mds_fs_post_setup(struct obd_device *obd)
{
struct mds_obd *mds = &obd->u.mds;
- struct dentry *de = mds_fid2dentry(mds, &mds->mds_rootfid, NULL);
- int rc = 0;
+ struct dentry *dentry;
+ int rc = 0;
+ ENTRY;
- rc = fsfilt_post_setup(obd, de);
+ dentry = mds_id2dentry(obd, &mds->mds_rootid, NULL);
+ if (IS_ERR(dentry)) {
+ CERROR("Can't find ROOT, err = %d\n",
+ (int)PTR_ERR(dentry));
+ RETURN(PTR_ERR(dentry));
+ }
+
+ rc = fsfilt_post_setup(obd, dentry);
if (rc)
- GOTO(out, rc);
-
- fsfilt_set_fs_flags(obd, de->d_inode,
- SM_DO_REC | SM_DO_COW);
+ goto out_dentry;
+
+ LASSERT(dentry->d_inode != NULL);
+
+ fsfilt_set_fs_flags(obd, dentry->d_inode,
+ SM_DO_REC | SM_DO_COW);
+
fsfilt_set_fs_flags(obd, mds->mds_pending_dir->d_inode,
- SM_DO_REC | SM_DO_COW);
+ SM_DO_REC | SM_DO_COW);
+
fsfilt_set_mds_flags(obd, mds->mds_sb);
-out:
- l_dput(de);
- return rc;
+
+out_dentry:
+ l_dput(dentry);
+ RETURN(rc);
+}
+
+/*
+ * sets up root inode lustre_id. It tries to read it first from root inode and
+ * if it is not there, new rootid is allocated and saved there.
+ */
+int mds_fs_setup_rootid(struct obd_device *obd)
+{
+ int rc = 0;
+ void *handle;
+ struct inode *inode;
+ struct dentry *dentry;
+ struct lustre_id rootid;
+ struct mds_obd *mds = &obd->u.mds;
+ ENTRY;
+
+ memcpy(&rootid, &mds->mds_rootid, sizeof(rootid));
+
+ /* getting root directory and setup its fid. */
+ dentry = mds_id2dentry(obd, &rootid, NULL);
+ if (IS_ERR(dentry)) {
+ CERROR("Can't find ROOT, err = %d\n",
+ (int)PTR_ERR(dentry));
+ RETURN(PTR_ERR(dentry));
+ }
+
+ inode = dentry->d_inode;
+ LASSERT(dentry->d_inode);
+
+ rc = mds_pack_inode2id(obd, &rootid, inode, 1);
+ if (rc < 0) {
+ if (rc != -ENODATA)
+ goto out_dentry;
+ } else {
+ /*
+ * rootid is filled by mds_read_inode_sid(), so we do not need
+ * to allocate it and update. The only thing we need to check is
+ * mds_num.
+ */
+ LASSERT(id_group(&rootid) == mds->mds_num);
+ mds_set_last_fid(obd, id_fid(&rootid));
+ GOTO(out_dentry, rc);
+ }
+
+ /* allocating new one, as it is not found in root inode. */
+ handle = fsfilt_start(obd, inode,
+ FSFILT_OP_SETATTR, NULL);
+
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ CERROR("fsfilt_start() failed, rc = %d\n", rc);
+ GOTO(out_dentry, rc);
+ }
+
+ down(&inode->i_sem);
+ rc = mds_alloc_inode_sid(obd, inode, handle, &rootid);
+ up(&inode->i_sem);
+
+ if (rc) {
+ CERROR("mds_alloc_inode_sid() failed, rc = %d\n",
+ rc);
+ GOTO(out_dentry, rc);
+ }
+
+ rc = fsfilt_commit(obd, mds->mds_sb, inode, handle, 0);
+ if (rc)
+ CERROR("fsfilt_commit() failed, rc = %d\n", rc);
+
+out_dentry:
+ l_dput(dentry);
+ if (rc == 0) {
+ memcpy(&mds->mds_rootid, &rootid, sizeof(rootid));
+ CWARN("%s: rootid: "DLID4"\n", obd->obd_name,
+ OLID4(&rootid));
+ }
+ RETURN(rc);
+}
+
+/*
+ * initializes lustre_id for virtual id directory, it is needed sometimes, as it
+ * is possible that it will be the parent for object an operations is going to
+ * be performed on.
+ */
+int mds_fs_setup_virtid(struct obd_device *obd)
+{
+ int rc = 0;
+ void *handle;
+ struct lustre_id id;
+ struct mds_obd *mds = &obd->u.mds;
+ struct inode *inode = mds->mds_id_dir->d_inode;
+ ENTRY;
+
+ handle = fsfilt_start(obd, inode,
+ FSFILT_OP_SETATTR, NULL);
+
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ CERROR("fsfilt_start() failed, rc = %d\n", rc);
+ RETURN(rc);
+ }
+
+ down(&inode->i_sem);
+ rc = mds_alloc_inode_sid(obd, inode, handle, &id);
+ up(&inode->i_sem);
+
+ if (rc) {
+ CERROR("mds_alloc_inode_sid() failed, rc = %d\n",
+ rc);
+ RETURN(rc);
+ }
+
+ rc = fsfilt_commit(obd, mds->mds_sb, inode, handle, 0);
+ if (rc) {
+ CERROR("fsfilt_commit() failed, rc = %d\n", rc);
+ RETURN(rc);
+ }
+
+ RETURN(rc);
}
int mds_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
GOTO(err_pop, rc);
}
- mds->mds_rootfid.id = dentry->d_inode->i_ino;
- mds->mds_rootfid.generation = dentry->d_inode->i_generation;
- mds->mds_rootfid.f_type = S_IFDIR;
+ mdc_pack_id(&mds->mds_rootid, dentry->d_inode->i_ino,
+ dentry->d_inode->i_generation, S_IFDIR, 0, 0);
dput(dentry);
-
+
dentry = lookup_one_len("__iopen__", current->fs->pwd,
strlen("__iopen__"));
if (IS_ERR(dentry)) {
CERROR("cannot lookup __iopen__ directory: rc = %d\n", rc);
GOTO(err_pop, rc);
}
+ mds->mds_id_de = dentry;
+
if (!dentry->d_inode) {
rc = -ENOENT;
CERROR("__iopen__ directory has no inode? rc = %d\n", rc);
- GOTO(err_fid, rc);
+ GOTO(err_id_de, rc);
}
- mds->mds_fid_de = dentry;
dentry = simple_mkdir(current->fs->pwd, "PENDING", 0777, 1);
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
CERROR("cannot create PENDING directory: rc = %d\n", rc);
- GOTO(err_fid, rc);
+ GOTO(err_id_de, rc);
}
mds->mds_pending_dir = dentry;
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
CERROR("cannot create FIDS directory: rc = %d\n", rc);
- GOTO(err_fids, rc);
+ GOTO(err_objects, rc);
}
- mds->mds_fids_dir = dentry;
+ mds->mds_id_dir = dentry;
dentry = simple_mkdir(current->fs->pwd, "UNNAMED", 0777, 1);
if (IS_ERR(dentry)) {
if (IS_ERR(file)) {
rc = PTR_ERR(file);
CERROR("cannot open/create %s file: rc = %d\n", LAST_RCVD, rc);
- GOTO(err_objects, rc = PTR_ERR(file));
+ GOTO(err_id_dir, rc = PTR_ERR(file));
}
mds->mds_rcvd_filp = file;
+
if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
CERROR("%s is not a regular file!: mode = %o\n", LAST_RCVD,
file->f_dentry->d_inode->i_mode);
GOTO(err_last_rcvd, rc);
}
- /* open and test the lov objd file */
+ /* open and test the last fid file */
+ file = filp_open(LAST_FID, O_RDWR | O_CREAT, 0644);
+ if (IS_ERR(file)) {
+ rc = PTR_ERR(file);
+ CERROR("cannot open/create %s file: rc = %d\n",
+ LAST_FID, rc);
+ GOTO(err_client, rc = PTR_ERR(file));
+ }
+ mds->mds_fid_filp = file;
+ if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
+ CERROR("%s is not a regular file!: mode = %o\n",
+ LAST_FID, file->f_dentry->d_inode->i_mode);
+ GOTO(err_last_fid, rc = -ENOENT);
+ }
+
+ rc = mds_read_last_fid(obd, file);
+ if (rc) {
+ CERROR("cannot read %s: rc = %d\n", LAST_FID, rc);
+ GOTO(err_last_fid, rc);
+ }
+
+ /* open and test the lov objid file */
file = filp_open(LOV_OBJID, O_RDWR | O_CREAT, 0644);
if (IS_ERR(file)) {
rc = PTR_ERR(file);
CERROR("cannot open/create %s file: rc = %d\n", LOV_OBJID, rc);
- GOTO(err_client, rc = PTR_ERR(file));
+ GOTO(err_last_fid, rc = PTR_ERR(file));
}
mds->mds_lov_objid_filp = file;
if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
err_lov_objid:
if (mds->mds_lov_objid_filp && filp_close(mds->mds_lov_objid_filp, 0))
CERROR("can't close %s after error\n", LOV_OBJID);
+err_last_fid:
+ if (mds->mds_fid_filp && filp_close(mds->mds_fid_filp, 0))
+ CERROR("can't close %s after error\n", LAST_FID);
err_client:
class_disconnect_exports(obd, 0);
err_last_rcvd:
CERROR("can't close %s after error\n", LAST_RCVD);
err_unnamed:
dput(mds->mds_unnamed_dir);
-err_fids:
- dput(mds->mds_fids_dir);
+err_id_dir:
+ dput(mds->mds_id_dir);
err_objects:
dput(mds->mds_objects_dir);
err_logs:
dput(mds->mds_logs_dir);
err_pending:
dput(mds->mds_pending_dir);
-err_fid:
- dput(mds->mds_fid_de);
+err_id_de:
+ dput(mds->mds_id_de);
goto err_pop;
}
mds_server_free_data(mds);
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
+ if (mds->mds_fid_filp) {
+ rc = filp_close(mds->mds_fid_filp, 0);
+ mds->mds_fid_filp = NULL;
+ if (rc)
+ CERROR("%s file won't close, rc = %d\n", LAST_FID, rc);
+ }
if (mds->mds_rcvd_filp) {
rc = filp_close(mds->mds_rcvd_filp, 0);
mds->mds_rcvd_filp = NULL;
if (rc)
- CERROR("%s file won't close, rc=%d\n", LAST_RCVD, rc);
+ CERROR("%s file won't close, rc = %d\n", LAST_RCVD, rc);
}
if (mds->mds_lov_objid_filp) {
rc = filp_close(mds->mds_lov_objid_filp, 0);
l_dput(mds->mds_unnamed_dir);
mds->mds_unnamed_dir = NULL;
}
- if (mds->mds_fids_dir != NULL) {
- l_dput(mds->mds_fids_dir);
- mds->mds_fids_dir = NULL;
+ if (mds->mds_id_dir != NULL) {
+ l_dput(mds->mds_id_dir);
+ mds->mds_id_dir = NULL;
}
if (mds->mds_objects_dir != NULL) {
l_dput(mds->mds_objects_dir);
rc = mds_fs_post_cleanup(obd);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- shrink_dcache_parent(mds->mds_fid_de);
- dput(mds->mds_fid_de);
+ shrink_dcache_parent(mds->mds_id_de);
+ dput(mds->mds_id_de);
return rc;
}
-/* Creates an object with the same name as its fid. Because this is not at all
+/* Creates an object with the same name as its id. Because this is not at all
* performance sensitive, it is accomplished by creating a file, checking the
- * fid, and renaming it. */
+ * id, and renaming it. */
int mds_obd_create(struct obd_export *exp, struct obdo *oa,
struct lov_stripe_md **ea, struct obd_trans_info *oti)
{
struct file *filp;
struct dentry *dchild;
struct lvfs_run_ctxt saved;
- char fidname[LL_FID_NAMELEN];
+ char idname[LL_ID_NAMELEN];
+ int rc = 0, err, idlen;
void *handle;
- int rc = 0, err, namelen;
ENTRY;
push_ctxt(&saved, &exp->exp_obd->obd_lvfs_ctxt, NULL);
down(&parent_inode->i_sem);
if (oa->o_id) {
- namelen = ll_fid2str(fidname, oa->o_id, oa->o_generation);
-
- dchild = lookup_one_len(fidname, mds->mds_objects_dir, namelen);
+ idlen = ll_id2str(idname, oa->o_id, oa->o_generation);
+ dchild = lookup_one_len(idname, mds->mds_objects_dir, idlen);
if (IS_ERR(dchild))
GOTO(out_pop, rc = PTR_ERR(dchild));
GOTO(out_pop, rc);
}
- sprintf(fidname, "OBJECTS/%u.%u",ll_insecure_random_int(),current->pid);
- filp = filp_open(fidname, O_CREAT | O_EXCL, 0644);
+ sprintf(idname, "OBJECTS/%u.%u", ll_insecure_random_int(), current->pid);
+ filp = filp_open(idname, O_CREAT | O_EXCL, 0644);
if (IS_ERR(filp)) {
rc = PTR_ERR(filp);
if (rc == -EEXIST) {
CERROR("impossible object name collision %s\n",
- fidname);
+ idname);
LBUG();
}
- CERROR("error creating tmp object %s: rc %d\n", fidname, rc);
+ CERROR("error creating tmp object %s: rc %d\n",
+ idname, rc);
GOTO(out_pop, rc);
}
oa->o_id = filp->f_dentry->d_inode->i_ino;
oa->o_generation = filp->f_dentry->d_inode->i_generation;
- namelen = ll_fid2str(fidname, oa->o_id, oa->o_generation);
- CWARN("created log anonymous "LPU64"/%u\n", oa->o_id, oa->o_generation);
-
- dchild = lookup_one_len(fidname, mds->mds_objects_dir, namelen);
+ idlen = ll_id2str(idname, oa->o_id, oa->o_generation);
+
+ CWARN("created log anonymous "LPU64"/%u\n",
+ oa->o_id, oa->o_generation);
+ dchild = lookup_one_len(idname, mds->mds_objects_dir, idlen);
if (IS_ERR(dchild)) {
CERROR("getting neg dentry for obj rename: %d\n", rc);
GOTO(out_close, rc = PTR_ERR(dchild));
out_close:
err = filp_close(filp, 0);
if (err) {
- CERROR("closing tmpfile %s: rc %d\n", fidname, rc);
+ CERROR("closing tmpfile %s: rc %d\n", idname, rc);
if (!rc)
rc = err;
}
struct inode *parent_inode = mds->mds_objects_dir->d_inode;
struct obd_device *obd = exp->exp_obd;
struct lvfs_run_ctxt saved;
- char fidname[LL_FID_NAMELEN];
+ char idname[LL_ID_NAMELEN];
struct dentry *de;
void *handle;
- int err, namelen, rc = 0;
+ int err, idlen, rc = 0;
ENTRY;
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- namelen = ll_fid2str(fidname, oa->o_id, oa->o_generation);
+ idlen = ll_id2str(idname, oa->o_id, oa->o_generation);
down(&parent_inode->i_sem);
- de = lookup_one_len(fidname, mds->mds_objects_dir, namelen);
+ de = lookup_one_len(idname, mds->mds_objects_dir, idlen);
if (IS_ERR(de) || de->d_inode == NULL) {
rc = IS_ERR(de) ? PTR_ERR(de) : -ENOENT;
CERROR("destroying non-existent object "LPU64" %s: rc %d\n",
- oa->o_id, fidname, rc);
+ oa->o_id, idname, rc);
GOTO(out_dput, rc);
}
/* Stripe count is 1 here since this is some MDS specific stuff
git://git.whamcloud.com / fs / lustre-release.git / blobdiff