int osd_compat_seq_init(struct osd_device *osd, int seq)
{
struct osd_compat_objid_seq *grp;
struct osd_compat_objid *map;
struct dentry *d;
int rc = 0;
char name[32];
int i;
ENTRY;
map = osd->od_ost_map;
LASSERT(map);
LASSERT(map->root);
grp = &map->groups[seq];
if (grp->groot != NULL)
RETURN(0);
cfs_down(&grp->dir_init_sem);
sprintf(name, "%d", seq);
d = simple_mkdir(map->root, osd->od_mnt, name, 0755, 1);
if (IS_ERR(d)) {
rc = PTR_ERR(d);
GOTO(out, rc);
} else if (d->d_inode == NULL) {
rc = -EFAULT;
dput(d);
GOTO(out, rc);
}
LASSERT(grp->dirs == NULL);
OBD_ALLOC(grp->dirs, sizeof(d) * map->subdir_count);
if (grp->dirs == NULL) {
dput(d);
GOTO(out, rc = -ENOMEM);
}
grp->groot = d;
for (i = 0; i < map->subdir_count; i++) {
sprintf(name, "d%d", i);
d = simple_mkdir(grp->groot, osd->od_mnt, name, 0755, 1);
if (IS_ERR(d)) {
rc = PTR_ERR(d);
break;
} else if (d->d_inode == NULL) {
rc = -EFAULT;
dput(d);
break;
}
grp->dirs[i] = d;
}
if (rc)
osd_compat_seq_fini(osd, seq);
out:
cfs_up(&grp->dir_init_sem);
RETURN(rc);
}
int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt)
{
struct mgs_obd *mgs = &obd->u.mgs;
struct lvfs_run_ctxt saved;
struct dentry *dentry;
int rc;
ENTRY;
/* FIXME what's this? Do I need it? */
rc = cfs_cleanup_group_info();
if (rc)
RETURN(rc);
mgs->mgs_vfsmnt = mnt;
mgs->mgs_sb = mnt->mnt_root->d_inode->i_sb;
rc = fsfilt_setup(obd, mgs->mgs_sb);
if (rc)
RETURN(rc);
OBD_SET_CTXT_MAGIC(&obd->obd_lvfs_ctxt);
obd->obd_lvfs_ctxt.pwdmnt = mnt;
obd->obd_lvfs_ctxt.pwd = mnt->mnt_root;
obd->obd_lvfs_ctxt.fs = get_ds();
obd->obd_lvfs_ctxt.cb_ops = mgs_lvfs_ops;
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
/* Setup the configs dir */
dentry = simple_mkdir(cfs_fs_pwd(current->fs), mnt, MOUNT_CONFIGS_DIR, 0777, 1);
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
CERROR("cannot create %s directory: rc = %d\n",
MOUNT_CONFIGS_DIR, rc);
GOTO(err_pop, rc);
}
mgs->mgs_configs_dir = dentry;
/* create directory to store nid table versions */
dentry = simple_mkdir(cfs_fs_pwd(current->fs), mnt, MGS_NIDTBL_DIR,
0777, 1);
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
CERROR("cannot create %s directory: rc = %d\n",
MOUNT_CONFIGS_DIR, rc);
GOTO(err_pop, rc);
} else {
dput(dentry);
}
err_pop:
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
return rc;
}
/*
* directory structure on legacy OST:
*
* O/<seq>/d0-31/<objid>
* O/<seq>/LAST_ID
* last_rcvd
* LAST_GROUP
* CONFIGS
*
*/
int osd_compat_init(struct osd_device *dev)
{
struct lvfs_run_ctxt new;
struct lvfs_run_ctxt save;
struct dentry *rootd = osd_sb(dev)->s_root;
struct dentry *d;
int rc;
int i;
ENTRY;
/* to get subdir count from last_rcvd */
rc = osd_last_rcvd_subdir_count(dev);
if (rc <= 0)
RETURN(rc);
dev->od_ost_map->subdir_count = rc;
rc = 0;
OBD_ALLOC_PTR(dev->od_ost_map);
if (dev->od_ost_map == NULL)
RETURN(-ENOMEM);
LASSERT(dev->od_fsops);
osd_push_ctxt(dev, &new, &save);
d = simple_mkdir(rootd, dev->od_mnt, "O", 0755, 1);
pop_ctxt(&save, &new, NULL);
if (IS_ERR(d)) {
OBD_FREE_PTR(dev->od_ost_map);
RETURN(PTR_ERR(d));
}
dev->od_ost_map->root = d;
/* Initialize all groups */
for (i = 0; i < MAX_OBJID_GROUP; i++) {
cfs_sema_init(&dev->od_ost_map->groups[i].dir_init_sem, 1);
rc = osd_compat_seq_init(dev, i);
if (rc) {
osd_compat_fini(dev);
break;
}
}
RETURN(rc);
}
/*mds still need lov setup here*/
static int mds_cmd_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
{
struct mds_obd *mds = &obd->u.mds;
struct lvfs_run_ctxt saved;
const char *dev;
struct vfsmount *mnt;
struct lustre_sb_info *lsi;
struct lustre_mount_info *lmi;
struct dentry *dentry;
int rc = 0;
ENTRY;
CDEBUG(D_INFO, "obd %s setup \n", obd->obd_name);
if (strncmp(obd->obd_name, MDD_OBD_NAME, strlen(MDD_OBD_NAME)))
RETURN(0);
if (lcfg->lcfg_bufcount < 5) {
CERROR("invalid arg for setup %s\n", MDD_OBD_NAME);
RETURN(-EINVAL);
}
dev = lustre_cfg_string(lcfg, 4);
lmi = server_get_mount(dev);
LASSERT(lmi != NULL);
lsi = s2lsi(lmi->lmi_sb);
mnt = lmi->lmi_mnt;
/* FIXME: MDD LOV initialize objects.
* we need only lmi here but not get mount
* OSD did mount already, so put mount back
*/
cfs_atomic_dec(&lsi->lsi_mounts);
mntput(mnt);
cfs_init_rwsem(&mds->mds_notify_lock);
obd->obd_fsops = fsfilt_get_ops(MT_STR(lsi->lsi_ldd));
mds_init_ctxt(obd, mnt);
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
dentry = simple_mkdir(current->fs->pwd, mnt, "OBJECTS", 0777, 1);
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
CERROR("cannot create OBJECTS directory: rc = %d\n", rc);
GOTO(err_putfs, rc);
}
mds->mds_objects_dir = dentry;
dentry = ll_lookup_one_len("__iopen__", current->fs->pwd,
strlen("__iopen__"));
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
CERROR("cannot lookup __iopen__ directory: rc = %d\n", rc);
GOTO(err_objects, rc);
}
mds->mds_fid_de = dentry;
if (!dentry->d_inode || is_bad_inode(dentry->d_inode)) {
rc = -ENOENT;
CERROR("__iopen__ directory has no inode? rc = %d\n", rc);
GOTO(err_fid, rc);
}
rc = mds_lov_init_objids(obd);
if (rc != 0) {
CERROR("cannot init lov objid rc = %d\n", rc);
GOTO(err_fid, rc );
}
rc = mds_lov_presetup(mds, lcfg);
if (rc < 0)
GOTO(err_objects, rc);
/* Don't wait for mds_postrecov trying to clear orphans */
obd->obd_async_recov = 1;
rc = mds_postsetup(obd);
/* Bug 11557 - allow async abort_recov start
FIXME can remove most of this obd_async_recov plumbing
obd->obd_async_recov = 0;
*/
if (rc)
GOTO(err_objects, rc);
err_pop:
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
RETURN(rc);
err_fid:
dput(mds->mds_fid_de);
err_objects:
dput(mds->mds_objects_dir);
err_putfs:
fsfilt_put_ops(obd->obd_fsops);
goto err_pop;
}
