* 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.
*/
/*
+ * Copyright (c) 2011 Whamcloud, Inc.
+ */
+/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
#define DEBUG_SUBSYSTEM S_MDS
#include <linux/module.h>
+#ifdef HAVE_EXT4_LDISKFS
+#include <ldiskfs/ldiskfs_jbd2.h>
+#else
#include <linux/jbd.h>
+#endif
#include <obd.h>
#include <obd_class.h>
#include <lustre_ver.h>
#include <lustre_disk.h>
#include <lustre_fid.h>
+#ifdef HAVE_EXT4_LDISKFS
+#include <ldiskfs/ldiskfs.h>
+#else
#include <linux/ldiskfs_fs.h>
+#endif
#include <lustre_mds.h>
#include <lustre/lustre_idl.h>
#include <lustre_disk.h> /* for changelogs */
static const char mdd_root_dir_name[] = "ROOT";
static const char mdd_obf_dir_name[] = "fid";
-static const char mdd_dot_lustre_name[] = ".lustre";
static int mdd_device_init(const struct lu_env *env, struct lu_device *d,
const char *name, struct lu_device *next)
/* Prepare transactions callbacks. */
mdd->mdd_txn_cb.dtc_txn_start = mdd_txn_start_cb;
mdd->mdd_txn_cb.dtc_txn_stop = mdd_txn_stop_cb;
- mdd->mdd_txn_cb.dtc_txn_commit = mdd_txn_commit_cb;
+ mdd->mdd_txn_cb.dtc_txn_commit = NULL;
mdd->mdd_txn_cb.dtc_cookie = mdd;
+ mdd->mdd_txn_cb.dtc_tag = LCT_MD_THREAD;
CFS_INIT_LIST_HEAD(&mdd->mdd_txn_cb.dtc_linkage);
mdd->mdd_atime_diff = MAX_ATIME_DIFF;
+ /* sync permission changes */
+ mdd->mdd_sync_permission = 1;
rc = mdd_procfs_init(mdd, name);
RETURN(rc);
ENTRY;
mdd_changelog_fini(env, m);
dt_txn_callback_del(m->mdd_child, &m->mdd_txn_cb);
- mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf);
- mdd_object_put(env, m->mdd_dot_lustre);
+ if (m->mdd_dot_lustre_objs.mdd_obf)
+ mdd_object_put(env, m->mdd_dot_lustre_objs.mdd_obf);
+ if (m->mdd_dot_lustre)
+ mdd_object_put(env, m->mdd_dot_lustre);
if (m->mdd_obd_dev)
mdd_fini_obd(env, m, cfg);
orph_index_fini(env, m);
struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
ENTRY;
- if (!(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN)) {
- CERROR("log is not plain\n");
- RETURN(-EINVAL);
- }
- if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
- CERROR("Not a changelog rec? %d\n", rec->cr_hdr.lrh_type);
- RETURN(-EINVAL);
- }
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cr_hdr.lrh_type == CHANGELOG_REC);
- CDEBUG(D_INODE,
+ CDEBUG(D_INFO,
"seeing record at index %d/%d/"LPU64" t=%x %.*s in log "LPX64"\n",
- hdr->lrh_index, rec->cr_hdr.lrh_index, rec->cr_index,
- rec->cr_type, rec->cr_namelen, rec->cr_name,
+ hdr->lrh_index, rec->cr_hdr.lrh_index, rec->cr.cr_index,
+ rec->cr.cr_type, rec->cr.cr_namelen, rec->cr.cr_name,
llh->lgh_id.lgl_oid);
- mdd->mdd_cl.mc_index = rec->cr_index;
+ mdd->mdd_cl.mc_index = rec->cr.cr_index;
RETURN(LLOG_PROC_BREAK);
}
+static int changelog_user_init_cb(struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct mdd_device *mdd = (struct mdd_device *)data;
+ struct llog_changelog_user_rec *rec =
+ (struct llog_changelog_user_rec *)hdr;
+ ENTRY;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+ LASSERT(rec->cur_hdr.lrh_type == CHANGELOG_USER_REC);
+
+ CDEBUG(D_INFO, "seeing user at index %d/%d id=%d endrec="LPU64
+ " in log "LPX64"\n", hdr->lrh_index, rec->cur_hdr.lrh_index,
+ rec->cur_id, rec->cur_endrec, llh->lgh_id.lgl_oid);
+
+ cfs_spin_lock(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = rec->cur_id;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ RETURN(LLOG_PROC_BREAK);
+}
+
+
static int mdd_changelog_llog_init(struct mdd_device *mdd)
{
struct obd_device *obd = mdd2obd_dev(mdd);
struct llog_ctxt *ctxt;
int rc;
+ /* Find last changelog entry number */
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
if (ctxt == NULL) {
- CERROR("no context\n");
+ CERROR("no changelog context\n");
return -EINVAL;
}
if (!ctxt->loc_handle) {
- CERROR("no handle\n");
+ llog_ctxt_put(ctxt);
return -EINVAL;
}
+
rc = llog_cat_reverse_process(ctxt->loc_handle, changelog_init_cb, mdd);
llog_ctxt_put(ctxt);
- if (rc < 0)
+ if (rc < 0) {
CERROR("changelog init failed: %d\n", rc);
- else
- rc = 0; /* llog_proc_break is ok */
+ return rc;
+ }
+ CDEBUG(D_IOCTL, "changelog starting index="LPU64"\n",
+ mdd->mdd_cl.mc_index);
+
+ /* Find last changelog user id */
+ ctxt = llog_get_context(obd, LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL) {
+ CERROR("no changelog user context\n");
+ return -EINVAL;
+ }
+ if (!ctxt->loc_handle) {
+ llog_ctxt_put(ctxt);
+ return -EINVAL;
+ }
- CDEBUG(D_INODE, "changelog_init index="LPU64"\n", mdd->mdd_cl.mc_index);
+ rc = llog_cat_reverse_process(ctxt->loc_handle, changelog_user_init_cb,
+ mdd);
+ llog_ctxt_put(ctxt);
+
+ if (rc < 0) {
+ CERROR("changelog user init failed: %d\n", rc);
+ return rc;
+ }
+
+ /* If we have registered users, assume we want changelogs on */
+ if (mdd->mdd_cl.mc_lastuser > 0)
+ rc = mdd_changelog_on(mdd, 1);
return rc;
}
int rc;
mdd->mdd_cl.mc_index = 0;
- spin_lock_init(&mdd->mdd_cl.mc_lock);
- cfs_waitq_init(&mdd->mdd_cl.mc_waitq);
-
+ cfs_spin_lock_init(&mdd->mdd_cl.mc_lock);
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
mdd->mdd_cl.mc_flags = 0; /* off by default */
- mdd->mdd_cl.mc_mask = CL_DEFMASK;
+ mdd->mdd_cl.mc_mask = CHANGELOG_DEFMASK;
+ cfs_spin_lock_init(&mdd->mdd_cl.mc_user_lock);
+ mdd->mdd_cl.mc_lastuser = 0;
+
rc = mdd_changelog_llog_init(mdd);
if (rc) {
CERROR("Changelog setup during init failed %d\n", rc);
mdd->mdd_cl.mc_flags |= CLM_ERR;
}
+
return rc;
}
mdd->mdd_cl.mc_flags = 0;
}
+/* Start / stop recording */
+int mdd_changelog_on(struct mdd_device *mdd, int on)
+{
+ int rc = 0;
+
+ if ((on == 1) && ((mdd->mdd_cl.mc_flags & CLM_ON) == 0)) {
+ LCONSOLE_INFO("%s: changelog on\n", mdd2obd_dev(mdd)->obd_name);
+ if (mdd->mdd_cl.mc_flags & CLM_ERR) {
+ CERROR("Changelogs cannot be enabled due to error "
+ "condition (see %s log).\n",
+ mdd2obd_dev(mdd)->obd_name);
+ rc = -ESRCH;
+ } else {
+ cfs_spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags |= CLM_ON;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_lock);
+ rc = mdd_changelog_write_header(mdd, CLM_START);
+ }
+ } else if ((on == 0) && ((mdd->mdd_cl.mc_flags & CLM_ON) == CLM_ON)) {
+ LCONSOLE_INFO("%s: changelog off\n",mdd2obd_dev(mdd)->obd_name);
+ rc = mdd_changelog_write_header(mdd, CLM_FINI);
+ cfs_spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_flags &= ~CLM_ON;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_lock);
+ }
+ return rc;
+}
+
+static __u64 cl_time(void) {
+ cfs_fs_time_t time;
+
+ cfs_fs_time_current(&time);
+ return (((__u64)time.tv_sec) << 30) + time.tv_nsec;
+}
+
/** Add a changelog entry \a rec to the changelog llog
* \param mdd
* \param rec
struct llog_ctxt *ctxt;
int rc;
- if ((mdd->mdd_cl.mc_mask & (1 << rec->cr_type)) == 0)
- return 0;
-
- rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr_namelen);
+ rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr.cr_namelen);
/* llog_lvfs_write_rec sets the llog tail len */
rec->cr_hdr.lrh_type = CHANGELOG_REC;
- rec->cr_time = cfs_time_current_64();
- spin_lock(&mdd->mdd_cl.mc_lock);
+ rec->cr.cr_time = cl_time();
+ cfs_spin_lock(&mdd->mdd_cl.mc_lock);
/* NB: I suppose it's possible llog_add adds out of order wrt cr_index,
but as long as the MDD transactions are ordered correctly for e.g.
rename conflicts, I don't think this should matter. */
- rec->cr_index = ++mdd->mdd_cl.mc_index;
- spin_unlock(&mdd->mdd_cl.mc_lock);
+ rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_lock);
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
if (ctxt == NULL)
return -ENXIO;
rc = llog_add(ctxt, &rec->cr_hdr, NULL, NULL, 0);
llog_ctxt_put(ctxt);
- cfs_waitq_signal(&mdd->mdd_cl.mc_waitq);
-
return rc;
}
{
struct obd_device *obd = mdd2obd_dev(mdd);
struct llog_ctxt *ctxt;
+ long long unsigned cur;
int rc;
ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
if (ctxt == NULL)
return -ENXIO;
- /* Some records purged; reset repeat-access time */
+ cfs_spin_lock(&mdd->mdd_cl.mc_lock);
+ cur = (long long)mdd->mdd_cl.mc_index;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_lock);
+ if (endrec > cur)
+ endrec = cur;
+
+ /* purge to "0" is shorthand for everything */
+ if (endrec == 0)
+ endrec = cur;
+
+ /* If purging all records, write a header entry so we don't have an
+ empty catalog and we're sure to have a valid starting index next
+ time. In case of crash, we just restart with old log so we're
+ allright. */
+ if (endrec == cur) {
+ rc = mdd_changelog_write_header(mdd, CLM_PURGE);
+ if (rc)
+ goto out;
+ }
+
+ /* Some records were purged, so reset repeat-access time (so we
+ record new mtime update records, so users can see a file has been
+ changed since the last purge) */
mdd->mdd_cl.mc_starttime = cfs_time_current_64();
rc = llog_cancel(ctxt, NULL, 1, (struct llog_cookie *)&endrec, 0);
-
+out:
llog_ctxt_put(ctxt);
-
return rc;
}
if (rec == NULL)
RETURN(-ENOMEM);
- rec->cr_flags = CLF_VERSION;
- rec->cr_type = CL_MARK;
- rec->cr_namelen = len;
- memcpy(rec->cr_name, obd->obd_name, rec->cr_namelen);
+ rec->cr.cr_flags = CLF_VERSION;
+ rec->cr.cr_type = CL_MARK;
+ rec->cr.cr_namelen = len;
+ memcpy(rec->cr.cr_name, obd->obd_name, rec->cr.cr_namelen);
/* Status and action flags */
- rec->cr_markerflags = mdd->mdd_cl.mc_flags | markerflags;
+ rec->cr.cr_markerflags = mdd->mdd_cl.mc_flags | markerflags;
- rc = mdd_changelog_llog_write(mdd, rec, NULL);
+ rc = (mdd->mdd_cl.mc_mask & (1 << CL_MARK)) ?
+ mdd_changelog_llog_write(mdd, rec, NULL) : 0;
/* assume on or off event; reset repeat-access time */
- mdd->mdd_cl.mc_starttime = rec->cr_time;
+ mdd->mdd_cl.mc_starttime = cfs_time_current_64();
OBD_FREE(rec, reclen);
RETURN(rc);
memcpy(fid, &LU_DOT_LUSTRE_FID, sizeof(struct lu_fid));
mdo = llo_store_create_index(env, &m->mdd_md_dev, m->mdd_child,
- mdd_root_dir_name, mdd_dot_lustre_name,
+ mdd_root_dir_name, dot_lustre_name,
fid, &dt_directory_features);
/* .lustre dir may be already present */
if (IS_ERR(mdo) && PTR_ERR(mdo) != -EEXIST) {
rc = PTR_ERR(mdo);
CERROR("creating obj [%s] fid = "DFID" rc = %d\n",
- mdd_dot_lustre_name, PFID(fid), rc);
+ dot_lustre_name, PFID(fid), rc);
RETURN(rc);
}
+ if (!IS_ERR(mdo))
+ lu_object_put(env, &mdo->mo_lu);
+
return 0;
}
-static int dot_lustre_attr_get(const struct lu_env *env, struct md_object *obj,
- struct md_attr *ma)
+
+static int dot_lustre_mdd_permission(const struct lu_env *env,
+ struct md_object *pobj,
+ struct md_object *cobj,
+ struct md_attr *attr, int mask)
+{
+ if (mask & ~(MAY_READ | MAY_EXEC))
+ return -EPERM;
+ else
+ return 0;
+}
+
+static int dot_lustre_mdd_attr_get(const struct lu_env *env,
+ struct md_object *obj, struct md_attr *ma)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
return mdd_attr_get_internal_locked(env, mdd_obj, ma);
}
-static int dot_lustre_attr_set(const struct lu_env *env, struct md_object *obj,
- const struct md_attr *ma)
+static int dot_lustre_mdd_attr_set(const struct lu_env *env,
+ struct md_object *obj,
+ const struct md_attr *ma)
{
return -EPERM;
}
-static int dot_lustre_xattr_get(const struct lu_env *env,
- struct md_object *obj, struct lu_buf *buf,
- const char *name)
+static int dot_lustre_mdd_xattr_get(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf,
+ const char *name)
{
return 0;
}
-/**
- * Direct access to the ".lustre" directory is not allowed.
- */
+static int dot_lustre_mdd_xattr_list(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf)
+{
+ return 0;
+}
+
+static int dot_lustre_mdd_xattr_set(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_buf *buf, const char *name,
+ int fl)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_xattr_del(const struct lu_env *env,
+ struct md_object *obj,
+ const char *name)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_readlink(const struct lu_env *env,
+ struct md_object *obj, struct lu_buf *buf)
+{
+ return 0;
+}
+
+static int dot_lustre_mdd_object_create(const struct lu_env *env,
+ struct md_object *obj,
+ const struct md_op_spec *spec,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_ref_add(const struct lu_env *env,
+ struct md_object *obj,
+ const struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_ref_del(const struct lu_env *env,
+ struct md_object *obj,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
static int dot_lustre_mdd_open(const struct lu_env *env, struct md_object *obj,
int flags)
{
- return -EPERM;
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ mdd_obj->mod_count++;
+ mdd_write_unlock(env, mdd_obj);
+
+ return 0;
+}
+
+static int dot_lustre_mdd_close(const struct lu_env *env, struct md_object *obj,
+ struct md_attr *ma, int mode)
+{
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ mdd_obj->mod_count--;
+ mdd_write_unlock(env, mdd_obj);
+
+ return 0;
+}
+
+static int dot_lustre_mdd_object_sync(const struct lu_env *env,
+ struct md_object *obj)
+{
+ return -ENOSYS;
+}
+
+static dt_obj_version_t dot_lustre_mdd_version_get(const struct lu_env *env,
+ struct md_object *obj)
+{
+ return 0;
+}
+
+static void dot_lustre_mdd_version_set(const struct lu_env *env,
+ struct md_object *obj,
+ dt_obj_version_t version)
+{
+ return;
+}
+
+static int dot_lustre_mdd_path(const struct lu_env *env, struct md_object *obj,
+ char *path, int pathlen, __u64 *recno, int *linkno)
+{
+ return -ENOSYS;
}
-static int dot_lustre_path(const struct lu_env *env, struct md_object *obj,
- char *path, int pathlen, __u64 recno, int *linkno)
+static int dot_file_lock(const struct lu_env *env, struct md_object *obj,
+ struct lov_mds_md *lmm, struct ldlm_extent *extent,
+ struct lustre_handle *lockh)
+{
+ return -ENOSYS;
+}
+
+static int dot_file_unlock(const struct lu_env *env, struct md_object *obj,
+ struct lov_mds_md *lmm, struct lustre_handle *lockh)
{
return -ENOSYS;
}
static struct md_object_operations mdd_dot_lustre_obj_ops = {
- .moo_attr_get = dot_lustre_attr_get,
- .moo_attr_set = dot_lustre_attr_set,
- .moo_xattr_get = dot_lustre_xattr_get,
- .moo_open = dot_lustre_mdd_open,
- .moo_path = dot_lustre_path
+ .moo_permission = dot_lustre_mdd_permission,
+ .moo_attr_get = dot_lustre_mdd_attr_get,
+ .moo_attr_set = dot_lustre_mdd_attr_set,
+ .moo_xattr_get = dot_lustre_mdd_xattr_get,
+ .moo_xattr_list = dot_lustre_mdd_xattr_list,
+ .moo_xattr_set = dot_lustre_mdd_xattr_set,
+ .moo_xattr_del = dot_lustre_mdd_xattr_del,
+ .moo_readpage = mdd_readpage,
+ .moo_readlink = dot_lustre_mdd_readlink,
+ .moo_object_create = dot_lustre_mdd_object_create,
+ .moo_ref_add = dot_lustre_mdd_ref_add,
+ .moo_ref_del = dot_lustre_mdd_ref_del,
+ .moo_open = dot_lustre_mdd_open,
+ .moo_close = dot_lustre_mdd_close,
+ .moo_capa_get = mdd_capa_get,
+ .moo_object_sync = dot_lustre_mdd_object_sync,
+ .moo_version_get = dot_lustre_mdd_version_get,
+ .moo_version_set = dot_lustre_mdd_version_set,
+ .moo_path = dot_lustre_mdd_path,
+ .moo_file_lock = dot_file_lock,
+ .moo_file_unlock = dot_file_unlock,
};
-static int dot_lustre_lookup(const struct lu_env *env, struct md_object *p,
- const struct lu_name *lname, struct lu_fid *f,
- struct md_op_spec *spec)
+
+static int dot_lustre_mdd_lookup(const struct lu_env *env, struct md_object *p,
+ const struct lu_name *lname, struct lu_fid *f,
+ struct md_op_spec *spec)
{
if (strcmp(lname->ln_name, mdd_obf_dir_name) == 0)
*f = LU_OBF_FID;
return 0;
}
-static int dot_lustre_create(const struct lu_env *env, struct md_object *pobj,
- const struct lu_name *lname,
- struct md_object *child, struct md_op_spec *spec,
- struct md_attr* ma)
+static mdl_mode_t dot_lustre_mdd_lock_mode(const struct lu_env *env,
+ struct md_object *obj,
+ mdl_mode_t mode)
+{
+ return MDL_MINMODE;
+}
+
+static int dot_lustre_mdd_create(const struct lu_env *env,
+ struct md_object *pobj,
+ const struct lu_name *lname,
+ struct md_object *child,
+ struct md_op_spec *spec,
+ struct md_attr* ma)
{
return -EPERM;
}
-static int dot_lustre_rename(const struct lu_env *env,
- struct md_object *src_pobj,
- struct md_object *tgt_pobj,
- const struct lu_fid *lf,
- const struct lu_name *lsname,
- struct md_object *tobj,
- const struct lu_name *ltname, struct md_attr *ma)
+static int dot_lustre_mdd_create_data(const struct lu_env *env,
+ struct md_object *p,
+ struct md_object *o,
+ const struct md_op_spec *spec,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_rename(const struct lu_env *env,
+ struct md_object *src_pobj,
+ struct md_object *tgt_pobj,
+ const struct lu_fid *lf,
+ const struct lu_name *lsname,
+ struct md_object *tobj,
+ const struct lu_name *ltname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_link(const struct lu_env *env,
+ struct md_object *tgt_obj,
+ struct md_object *src_obj,
+ const struct lu_name *lname,
+ struct md_attr *ma)
{
return -EPERM;
}
-static int dot_lustre_link(const struct lu_env *env, struct md_object *tgt_obj,
- struct md_object *src_obj,
- const struct lu_name *lname, struct md_attr *ma)
+static int dot_lustre_mdd_unlink(const struct lu_env *env,
+ struct md_object *pobj,
+ struct md_object *cobj,
+ const struct lu_name *lname,
+ struct md_attr *ma)
{
return -EPERM;
}
-static int dot_lustre_unlink(const struct lu_env *env, struct md_object *pobj,
- struct md_object *cobj, const struct lu_name *lname,
- struct md_attr *ma)
+static int dot_lustre_mdd_name_insert(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_name *lname,
+ const struct lu_fid *fid,
+ const struct md_attr *ma)
{
return -EPERM;
}
+static int dot_lustre_mdd_name_remove(const struct lu_env *env,
+ struct md_object *obj,
+ const struct lu_name *lname,
+ const struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+static int dot_lustre_mdd_rename_tgt(const struct lu_env *env,
+ struct md_object *pobj,
+ struct md_object *tobj,
+ const struct lu_fid *fid,
+ const struct lu_name *lname,
+ struct md_attr *ma)
+{
+ return -EPERM;
+}
+
+
static struct md_dir_operations mdd_dot_lustre_dir_ops = {
- .mdo_lookup = dot_lustre_lookup,
- .mdo_create = dot_lustre_create,
- .mdo_rename = dot_lustre_rename,
- .mdo_link = dot_lustre_link,
- .mdo_unlink = dot_lustre_unlink,
+ .mdo_is_subdir = mdd_is_subdir,
+ .mdo_lookup = dot_lustre_mdd_lookup,
+ .mdo_lock_mode = dot_lustre_mdd_lock_mode,
+ .mdo_create = dot_lustre_mdd_create,
+ .mdo_create_data = dot_lustre_mdd_create_data,
+ .mdo_rename = dot_lustre_mdd_rename,
+ .mdo_link = dot_lustre_mdd_link,
+ .mdo_unlink = dot_lustre_mdd_unlink,
+ .mdo_name_insert = dot_lustre_mdd_name_insert,
+ .mdo_name_remove = dot_lustre_mdd_name_remove,
+ .mdo_rename_tgt = dot_lustre_mdd_rename_tgt,
};
static int obf_attr_get(const struct lu_env *env, struct md_object *obj,
/* "fid" is a virtual object and hence does not have any "real"
* attributes. So we reuse attributes of .lustre for "fid" dir */
ma->ma_need |= MA_INODE;
- rc = dot_lustre_attr_get(env, &mdd->mdd_dot_lustre->mod_obj, ma);
+ rc = dot_lustre_mdd_attr_get(env, &mdd->mdd_dot_lustre->mod_obj,
+ ma);
if (rc)
return rc;
ma->ma_valid |= MA_INODE;
return 0;
if (ma->ma_need & MA_LOV_DEF) {
- rc = mdd_get_default_md(mdd_obj, ma->ma_lmm,
- &ma->ma_lmm_size);
+ rc = mdd_get_default_md(mdd_obj, ma->ma_lmm);
if (rc > 0) {
+ ma->ma_lmm_size = rc;
ma->ma_valid |= MA_LOV;
rc = 0;
}
}
static int obf_mdd_close(const struct lu_env *env, struct md_object *obj,
- struct md_attr *ma)
+ struct md_attr *ma, int mode)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
}
static int obf_path(const struct lu_env *env, struct md_object *obj,
- char *path, int pathlen, __u64 recno, int *linkno)
+ char *path, int pathlen, __u64 *recno, int *linkno)
{
return -ENOSYS;
}
while (*name == '[')
name++;
- sscanf(name, SFID, &(f->f_seq), &(f->f_oid),
- &(f->f_ver));
+ sscanf(name, SFID, RFID(f));
if (!fid_is_sane(f)) {
CWARN("bad FID format [%s], should be "DFID"\n", lname->ln_name,
(__u64)1, 2, 0);
return rc;
dt_dot_lustre = dt_store_open(env, m->mdd_child, mdd_root_dir_name,
- mdd_dot_lustre_name, fid);
+ dot_lustre_name, fid);
if (IS_ERR(dt_dot_lustre)) {
rc = PTR_ERR(dt_dot_lustre);
GOTO(out, rc);
m->mdd_dot_lustre = lu2mdd_obj(lu_object_locate(dt_dot_lustre->do_lu.lo_header,
&mdd_device_type));
- lu_object_put(env, &dt_dot_lustre->do_lu);
-
m->mdd_dot_lustre->mod_obj.mo_dir_ops = &mdd_dot_lustre_dir_ops;
m->mdd_dot_lustre->mod_obj.mo_ops = &mdd_dot_lustre_obj_ops;
ENTRY;
LASSERT(mds->mds_lov_objids != NULL);
- rc = obd_set_info_async(mds->mds_osc_exp, strlen(KEY_NEXT_ID),
+ rc = obd_set_info_async(mds->mds_lov_exp, strlen(KEY_NEXT_ID),
KEY_NEXT_ID, mds->mds_lov_desc.ld_tgt_count,
mds->mds_lov_objids, NULL);
}
#endif
/* Call that with obd_recovering = 1 just to update objids */
- obd_notify(obd->u.mds.mds_osc_obd, NULL, (obd->obd_async_recov ?
+ obd_notify(obd->u.mds.mds_lov_obd, NULL, (obd->obd_async_recov ?
OBD_NOTIFY_SYNC_NONBLOCK : OBD_NOTIFY_SYNC), NULL);
/* Drop obd_recovering to 0 and call o_postrecov to recover mds_lov */
+ cfs_spin_lock(&obd->obd_dev_lock);
obd->obd_recovering = 0;
+ cfs_spin_unlock(&obd->obd_dev_lock);
obd->obd_type->typ_dt_ops->o_postrecov(obd);
/* XXX: orphans handling. */
* No permission check is needed.
*/
static int mdd_statfs(const struct lu_env *env, struct md_device *m,
- struct kstatfs *sfs)
+ cfs_kstatfs_t *sfs)
{
struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
int rc;
int rc;
ENTRY;
+ /* need barrier for mds_capa_keys access. */
+ cfs_down_write(&mds->mds_notify_lock);
mds->mds_capa_keys = keys;
+ cfs_up_write(&mds->mds_notify_lock);
+
rc = mdd_child_ops(mdd)->dt_init_capa_ctxt(env, mdd->mdd_child, mode,
timeout, alg, keys);
RETURN(rc);
struct md_device *m,
struct lustre_capa_key *key)
{
+ struct mds_capa_info info = { .uuid = NULL, .capa = key };
struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
- struct obd_export *lov_exp = mdd2obd_dev(mdd)->u.mds.mds_osc_exp;
+ struct obd_export *lov_exp = mdd2obd_dev(mdd)->u.mds.mds_lov_exp;
int rc;
ENTRY;
rc = obd_set_info_async(lov_exp, sizeof(KEY_CAPA_KEY), KEY_CAPA_KEY,
- sizeof(*key), key, NULL);
+ sizeof(info), &info, NULL);
RETURN(rc);
}
+static int mdd_llog_ctxt_get(const struct lu_env *env, struct md_device *m,
+ int idx, void **h)
+{
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ *h = llog_group_get_ctxt(&mdd2obd_dev(mdd)->obd_olg, idx);
+ return (*h == NULL ? -ENOENT : 0);
+}
+
static struct lu_device *mdd_device_alloc(const struct lu_env *env,
struct lu_device_type *t,
struct lustre_cfg *lcfg)
struct lu_device *next = &m->mdd_child->dd_lu_dev;
ENTRY;
- LASSERT(atomic_read(&lu->ld_ref) == 0);
+ LASSERT(cfs_atomic_read(&lu->ld_ref) == 0);
md_device_fini(&m->mdd_md_dev);
OBD_FREE_PTR(m);
RETURN(next);
}
EXPORT_SYMBOL(md_capainfo);
+/*
+ * context key constructor/destructor:
+ * mdd_quota_key_init, mdd_quota_key_fini
+ */
+LU_KEY_INIT_FINI(mdd_quota, struct md_quota);
+
+struct lu_context_key mdd_quota_key = {
+ .lct_tags = LCT_SESSION,
+ .lct_init = mdd_quota_key_init,
+ .lct_fini = mdd_quota_key_fini
+};
+
+struct md_quota *md_quota(const struct lu_env *env)
+{
+ LASSERT(env->le_ses != NULL);
+ return lu_context_key_get(env->le_ses, &mdd_quota_key);
+}
+EXPORT_SYMBOL(md_quota);
+
+static int mdd_changelog_user_register(struct mdd_device *mdd, int *id)
+{
+ struct llog_ctxt *ctxt;
+ struct llog_changelog_user_rec *rec;
+ int rc;
+ ENTRY;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ RETURN(-ENXIO);
+
+ OBD_ALLOC_PTR(rec);
+ if (rec == NULL) {
+ llog_ctxt_put(ctxt);
+ RETURN(-ENOMEM);
+ }
+
+ /* Assume we want it on since somebody registered */
+ rc = mdd_changelog_on(mdd, 1);
+ if (rc)
+ GOTO(out, rc);
+
+ rec->cur_hdr.lrh_len = sizeof(*rec);
+ rec->cur_hdr.lrh_type = CHANGELOG_USER_REC;
+ cfs_spin_lock(&mdd->mdd_cl.mc_user_lock);
+ if (mdd->mdd_cl.mc_lastuser == (unsigned int)(-1)) {
+ cfs_spin_unlock(&mdd->mdd_cl.mc_user_lock);
+ CERROR("Maximum number of changelog users exceeded!\n");
+ GOTO(out, rc = -EOVERFLOW);
+ }
+ *id = rec->cur_id = ++mdd->mdd_cl.mc_lastuser;
+ rec->cur_endrec = mdd->mdd_cl.mc_index;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_user_lock);
+
+ rc = llog_add(ctxt, &rec->cur_hdr, NULL, NULL, 0);
+
+ CDEBUG(D_IOCTL, "Registered changelog user %d\n", *id);
+out:
+ OBD_FREE_PTR(rec);
+ llog_ctxt_put(ctxt);
+ RETURN(rc);
+}
+
+struct mdd_changelog_user_data {
+ __u64 mcud_endrec; /**< purge record for this user */
+ __u64 mcud_minrec; /**< lowest changelog recno still referenced */
+ __u32 mcud_id;
+ __u32 mcud_minid; /**< user id with lowest rec reference */
+ __u32 mcud_usercount;
+ int mcud_found:1;
+ struct mdd_device *mcud_mdd;
+ const struct lu_env *mcud_env;
+};
+#define MCUD_UNREGISTER -1LL
+
+/** Two things:
+ * 1. Find the smallest record everyone is willing to purge
+ * 2. Update the last purgeable record for this user
+ */
+static int mdd_changelog_user_purge_cb(struct llog_handle *llh,
+ struct llog_rec_hdr *hdr, void *data)
+{
+ struct llog_changelog_user_rec *rec;
+ struct mdd_changelog_user_data *mcud =
+ (struct mdd_changelog_user_data *)data;
+ int rc;
+ ENTRY;
+
+ LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
+
+ rec = (struct llog_changelog_user_rec *)hdr;
+
+ mcud->mcud_usercount++;
+
+ /* If we have a new endrec for this id, use it for the following
+ min check instead of its old value */
+ if (rec->cur_id == mcud->mcud_id)
+ rec->cur_endrec = max(rec->cur_endrec, mcud->mcud_endrec);
+
+ /* Track the minimum referenced record */
+ if (mcud->mcud_minid == 0 || mcud->mcud_minrec > rec->cur_endrec) {
+ mcud->mcud_minid = rec->cur_id;
+ mcud->mcud_minrec = rec->cur_endrec;
+ }
+
+ if (rec->cur_id != mcud->mcud_id)
+ RETURN(0);
+
+ /* Update this user's record */
+ mcud->mcud_found = 1;
+
+ /* Special case: unregister this user */
+ if (mcud->mcud_endrec == MCUD_UNREGISTER) {
+ struct llog_cookie cookie;
+ void *trans_h;
+ struct mdd_device *mdd = mcud->mcud_mdd;
+
+ cookie.lgc_lgl = llh->lgh_id;
+ cookie.lgc_index = hdr->lrh_index;
+
+ /* XXX This is a workaround for the deadlock of changelog
+ * adding vs. changelog cancelling. LU-81. */
+ mdd_txn_param_build(mcud->mcud_env, mdd, MDD_TXN_UNLINK_OP, 0);
+ trans_h = mdd_trans_start(mcud->mcud_env, mdd);
+ if (IS_ERR(trans_h)) {
+ CERROR("fsfilt_start_log failed: %ld\n",
+ PTR_ERR(trans_h));
+ RETURN(PTR_ERR(trans_h));
+ }
+
+ rc = llog_cat_cancel_records(llh->u.phd.phd_cat_handle,
+ 1, &cookie);
+ if (rc == 0)
+ mcud->mcud_usercount--;
+
+ mdd_trans_stop(mcud->mcud_env, mdd, rc, trans_h);
+ RETURN(rc);
+ }
+
+ /* Update the endrec */
+ CDEBUG(D_IOCTL, "Rewriting changelog user %d endrec to "LPU64"\n",
+ mcud->mcud_id, rec->cur_endrec);
+
+ /* hdr+1 is loc of data */
+ hdr->lrh_len -= sizeof(*hdr) + sizeof(struct llog_rec_tail);
+ rc = llog_write_rec(llh, hdr, NULL, 0, (void *)(hdr + 1),
+ hdr->lrh_index);
+
+ RETURN(rc);
+}
+
+static int mdd_changelog_user_purge(const struct lu_env *env,
+ struct mdd_device *mdd, int id,
+ long long endrec)
+{
+ struct mdd_changelog_user_data data;
+ struct llog_ctxt *ctxt;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_IOCTL, "Purge request: id=%d, endrec=%lld\n", id, endrec);
+
+ data.mcud_id = id;
+ data.mcud_minid = 0;
+ data.mcud_minrec = 0;
+ data.mcud_usercount = 0;
+ data.mcud_endrec = endrec;
+ data.mcud_mdd = mdd;
+ data.mcud_env = env;
+ cfs_spin_lock(&mdd->mdd_cl.mc_lock);
+ endrec = mdd->mdd_cl.mc_index;
+ cfs_spin_unlock(&mdd->mdd_cl.mc_lock);
+ if ((data.mcud_endrec == 0) ||
+ ((data.mcud_endrec > endrec) &&
+ (data.mcud_endrec != MCUD_UNREGISTER)))
+ data.mcud_endrec = endrec;
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (ctxt == NULL)
+ return -ENXIO;
+ LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
+
+ rc = llog_cat_process(ctxt->loc_handle, mdd_changelog_user_purge_cb,
+ (void *)&data, 0, 0);
+ if ((rc >= 0) && (data.mcud_minrec > 0)) {
+ CDEBUG(D_IOCTL, "Purging changelog entries up to "LPD64
+ ", referenced by "CHANGELOG_USER_PREFIX"%d\n",
+ data.mcud_minrec, data.mcud_minid);
+ rc = mdd_changelog_llog_cancel(mdd, data.mcud_minrec);
+ } else {
+ CWARN("Could not determine changelog records to purge; rc=%d\n",
+ rc);
+ }
+
+ llog_ctxt_put(ctxt);
+
+ if (!data.mcud_found) {
+ CWARN("No entry for user %d. Last changelog reference is "
+ LPD64" by changelog user %d\n", data.mcud_id,
+ data.mcud_minrec, data.mcud_minid);
+ rc = -ENOENT;
+ }
+
+ if (!rc && data.mcud_usercount == 0)
+ /* No more users; turn changelogs off */
+ rc = mdd_changelog_on(mdd, 0);
+
+ RETURN (rc);
+}
+
+/** mdd_iocontrol
+ * May be called remotely from mdt_iocontrol_handle or locally from
+ * mdt_iocontrol. Data may be freeform - remote handling doesn't enforce
+ * an obd_ioctl_data format (but local ioctl handler does).
+ * \param cmd - ioc
+ * \param len - data len
+ * \param karg - ioctl data, in kernel space
+ */
+static int mdd_iocontrol(const struct lu_env *env, struct md_device *m,
+ unsigned int cmd, int len, void *karg)
+{
+ struct mdd_device *mdd;
+ struct obd_ioctl_data *data = karg;
+ int rc;
+ ENTRY;
+
+ mdd = lu2mdd_dev(&m->md_lu_dev);
+
+ /* Doesn't use obd_ioctl_data */
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_CLEAR: {
+ struct changelog_setinfo *cs = karg;
+ rc = mdd_changelog_user_purge(env, mdd, cs->cs_id,
+ cs->cs_recno);
+ RETURN(rc);
+ }
+ case OBD_IOC_GET_MNTOPT: {
+ mntopt_t *mntopts = (mntopt_t *)karg;
+ *mntopts = mdd->mdd_dt_conf.ddp_mntopts;
+ RETURN(0);
+ }
+ }
+
+ /* Below ioctls use obd_ioctl_data */
+ if (len != sizeof(*data)) {
+ CERROR("Bad ioctl size %d\n", len);
+ RETURN(-EINVAL);
+ }
+ if (data->ioc_version != OBD_IOCTL_VERSION) {
+ CERROR("Bad magic %x != %x\n", data->ioc_version,
+ OBD_IOCTL_VERSION);
+ RETURN(-EINVAL);
+ }
+
+ switch (cmd) {
+ case OBD_IOC_CHANGELOG_REG:
+ rc = mdd_changelog_user_register(mdd, &data->ioc_u32_1);
+ break;
+ case OBD_IOC_CHANGELOG_DEREG:
+ rc = mdd_changelog_user_purge(env, mdd, data->ioc_u32_1,
+ MCUD_UNREGISTER);
+ break;
+ default:
+ rc = -ENOTTY;
+ }
+
+ RETURN (rc);
+}
+
/* type constructor/destructor: mdd_type_init, mdd_type_fini */
-LU_TYPE_INIT_FINI(mdd, &mdd_thread_key, &mdd_ucred_key, &mdd_capainfo_key);
+LU_TYPE_INIT_FINI(mdd, &mdd_thread_key, &mdd_ucred_key, &mdd_capainfo_key,
+ &mdd_quota_key);
const struct md_device_operations mdd_ops = {
.mdo_statfs = mdd_statfs,
.mdo_maxsize_get = mdd_maxsize_get,
.mdo_init_capa_ctxt = mdd_init_capa_ctxt,
.mdo_update_capa_key= mdd_update_capa_key,
+ .mdo_llog_ctxt_get = mdd_llog_ctxt_get,
+ .mdo_iocontrol = mdd_iocontrol,
#ifdef HAVE_QUOTA_SUPPORT
.mdo_quota = {
.mqo_notify = mdd_quota_notify,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff