*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* 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, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
/* fid_be_cpu(), fid_cpu_to_be(). */
#include <lustre_fid.h>
#include <lustre_idmap.h>
-#include <lustre_param.h>
+#include <uapi/linux/lustre/lustre_param.h>
#include <lustre_mds.h>
-#include <lustre/lustre_idl.h>
#include "mdd_internal.h"
static const struct lu_object_operations mdd_lu_obj_ops;
+struct mdd_object_user {
+ struct list_head mou_list; /**< linked off mod_users */
+ u64 mou_open_flags; /**< open mode by client */
+ __u64 mou_uidgid; /**< uid_gid on client */
+ int mou_opencount; /**< # opened */
+ ktime_t mou_deniednext; /**< time of next access denied
+ * notfication
+ */
+};
+
static int mdd_xattr_get(const struct lu_env *env,
struct md_object *obj, struct lu_buf *buf,
const char *name);
-int mdd_la_get(const struct lu_env *env, struct mdd_object *obj,
- struct lu_attr *la, struct lustre_capa *capa)
+static int mdd_changelog_data_store_by_fid(const struct lu_env *env,
+ struct mdd_device *mdd,
+ enum changelog_rec_type type,
+ enum changelog_rec_flags clf_flags,
+ const struct lu_fid *fid,
+ const char *xattr_name,
+ struct thandle *handle);
+
+static inline bool has_prefix(const char *str, const char *prefix);
+
+
+static u32 flags_helper(u64 open_flags)
{
- if (mdd_object_exists(obj) == 0) {
- CERROR("%s: object "DFID" not found: rc = -2\n",
- mdd_obj_dev_name(obj), PFID(mdd_object_fid(obj)));
- return -ENOENT;
- }
+ u32 open_mode = 0;
+
+ if (open_flags & MDS_FMODE_EXEC) {
+ open_mode = MDS_FMODE_EXEC;
+ } else {
+ if (open_flags & MDS_FMODE_READ)
+ open_mode = MDS_FMODE_READ;
+ if (open_flags &
+ (MDS_FMODE_WRITE | MDS_OPEN_TRUNC | MDS_OPEN_APPEND))
+ open_mode |= MDS_FMODE_WRITE;
+ }
+
+ return open_mode;
+}
+
+/** Allocate/init a user and its sub-structures.
+ *
+ * \param flags [IN]
+ * \param uid [IN]
+ * \param gid [IN]
+ * \retval mou [OUT] success valid structure
+ * \retval mou [OUT]
+ */
+static struct mdd_object_user *mdd_obj_user_alloc(u64 open_flags,
+ uid_t uid, gid_t gid)
+{
+ struct mdd_object_user *mou;
+
+ ENTRY;
+
+ OBD_SLAB_ALLOC_PTR(mou, mdd_object_kmem);
+ if (mou == NULL)
+ RETURN(ERR_PTR(-ENOMEM));
+
+ mou->mou_open_flags = open_flags;
+ mou->mou_uidgid = ((__u64)uid << 32) | gid;
+ mou->mou_opencount = 0;
+ mou->mou_deniednext = ktime_set(0, 0);
+
+ RETURN(mou);
+}
+
+/**
+ * Free a user and its sub-structures.
+ *
+ * \param mou [IN] user to be freed.
+ */
+static void mdd_obj_user_free(struct mdd_object_user *mou)
+{
+ OBD_SLAB_FREE_PTR(mou, mdd_object_kmem);
+}
+
+/**
+ * Find if UID/GID already has this file open
+ *
+ * Caller should have write-locked \param mdd_obj.
+ * \param mdd_obj [IN] mdd_obj
+ * \param uid [IN] client uid
+ * \param gid [IN] client gid
+ * \retval user pointer or NULL if not found
+ */
+static
+struct mdd_object_user *mdd_obj_user_find(struct mdd_object *mdd_obj,
+ uid_t uid, gid_t gid,
+ u64 open_flags)
+{
+ struct mdd_object_user *mou;
+ __u64 uidgid;
+
+ ENTRY;
+
+ uidgid = ((__u64)uid << 32) | gid;
+ list_for_each_entry(mou, &mdd_obj->mod_users, mou_list) {
+ if (mou->mou_uidgid == uidgid &&
+ flags_helper(mou->mou_open_flags) ==
+ flags_helper(open_flags))
+ RETURN(mou);
+ }
+ RETURN(NULL);
+}
+
+/**
+ * Add a user to the list of openers for this file
+ *
+ * Caller should have write-locked \param mdd_obj.
+ * \param mdd_obj [IN] mdd_obj
+ * \param mou [IN] user
+ * \retval 0 success
+ * \retval -ve failure
+ */
+static int mdd_obj_user_add(struct mdd_object *mdd_obj,
+ struct mdd_object_user *mou,
+ bool denied)
+{
+ struct mdd_device *mdd = mdd_obj2mdd_dev(mdd_obj);
+ struct mdd_object_user *tmp;
+ __u32 uid = mou->mou_uidgid >> 32;
+ __u32 gid = mou->mou_uidgid & ((1UL << 32) - 1);
+
+ ENTRY;
+ tmp = mdd_obj_user_find(mdd_obj, uid, gid, mou->mou_open_flags);
+ if (tmp != NULL)
+ RETURN(-EEXIST);
- return mdo_attr_get(env, obj, la, capa);
+ list_add_tail(&mou->mou_list, &mdd_obj->mod_users);
+
+ if (denied)
+ /* next 'access denied' notification cannot happen before
+ * mou_deniednext
+ */
+ mou->mou_deniednext =
+ ktime_add(ktime_get(),
+ ktime_set(mdd->mdd_cl.mc_deniednext, 0));
+ else
+ mou->mou_opencount++;
+
+ RETURN(0);
}
+/**
+ * Remove UID from the list
+ *
+ * Caller should have write-locked \param mdd_obj.
+ * \param mdd_obj [IN] mdd_obj
+ * \param uid [IN] user
+ * \retval -ve failure
+ */
+static int mdd_obj_user_remove(struct mdd_object *mdd_obj,
+ struct mdd_object_user *mou)
+{
+ ENTRY;
+
+ if (mou == NULL)
+ RETURN(-ENOENT);
-void mdd_flags_xlate(struct mdd_object *obj, __u32 flags)
+ list_del_init(&mou->mou_list);
+
+ mdd_obj_user_free(mou);
+
+ RETURN(0);
+}
+int mdd_la_get(const struct lu_env *env, struct mdd_object *obj,
+ struct lu_attr *la)
{
- obj->mod_flags &= ~(APPEND_OBJ|IMMUTE_OBJ);
+ int rc;
+
+ if (mdd_object_exists(obj) == 0)
+ return -ENOENT;
+
+ rc = mdo_attr_get(env, obj, la);
+ if (unlikely(rc != 0)) {
+ if (rc == -ENOENT)
+ obj->mod_flags |= DEAD_OBJ;
+ return rc;
+ }
- if (flags & LUSTRE_APPEND_FL)
- obj->mod_flags |= APPEND_OBJ;
+ if (la->la_valid & LA_FLAGS && la->la_flags & LUSTRE_ORPHAN_FL)
+ obj->mod_flags |= ORPHAN_OBJ | DEAD_OBJ;
- if (flags & LUSTRE_IMMUTABLE_FL)
- obj->mod_flags |= IMMUTE_OBJ;
+ return 0;
}
struct mdd_thread_info *mdd_env_info(const struct lu_env *env)
struct lu_device *d)
{
struct mdd_object *mdd_obj;
+ struct lu_object *o;
OBD_SLAB_ALLOC_PTR_GFP(mdd_obj, mdd_object_kmem, GFP_NOFS);
- if (mdd_obj != NULL) {
- struct lu_object *o;
-
- o = mdd2lu_obj(mdd_obj);
- lu_object_init(o, NULL, d);
- mdd_obj->mod_obj.mo_ops = &mdd_obj_ops;
- mdd_obj->mod_obj.mo_dir_ops = &mdd_dir_ops;
- mdd_obj->mod_count = 0;
- o->lo_ops = &mdd_lu_obj_ops;
- return o;
- } else {
+ if (!mdd_obj)
return NULL;
- }
+
+ o = mdd2lu_obj(mdd_obj);
+ lu_object_init(o, NULL, d);
+ mdd_obj->mod_obj.mo_ops = &mdd_obj_ops;
+ mdd_obj->mod_obj.mo_dir_ops = &mdd_dir_ops;
+ mdd_obj->mod_count = 0;
+ o->lo_ops = &mdd_lu_obj_ops;
+ INIT_LIST_HEAD(&mdd_obj->mod_users);
+
+ return o;
}
static int mdd_object_init(const struct lu_env *env, struct lu_object *o,
struct lu_device *under;
ENTRY;
- mdd_obj->mod_cltime = 0;
+ mdd_obj->mod_cltime = ktime_set(0, 0);
under = &d->mdd_child->dd_lu_dev;
below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
if (IS_ERR(below))
struct mdd_object *mdd_obj = lu2mdd_obj(o);
struct lu_attr *attr = MDD_ENV_VAR(env, la_for_start);
- rc = mdd_la_get(env, mdd_obj, attr, BYPASS_CAPA);
- if (rc == 0)
- mdd_flags_xlate(mdd_obj, attr->la_flags);
+ rc = mdd_la_get(env, mdd_obj, attr);
}
return rc;
static void mdd_object_free(const struct lu_env *env, struct lu_object *o)
{
- struct mdd_object *mdd = lu2mdd_obj(o);
+ struct mdd_object *mdd = lu2mdd_obj(o);
+ struct mdd_object_user *mou, *tmp2;
+
+ /* free user list */
+ list_for_each_entry_safe(mou, tmp2, &mdd->mod_users, mou_list) {
+ list_del(&mou->mou_list);
+ mdd_obj_user_free(mou);
+ }
- lu_object_fini(o);
+ lu_object_fini(o);
OBD_SLAB_FREE_PTR(mdd, mdd_object_kmem);
}
static int mdd_object_print(const struct lu_env *env, void *cookie,
lu_printer_t p, const struct lu_object *o)
{
- struct mdd_object *mdd = lu2mdd_obj((struct lu_object *)o);
- return (*p)(env, cookie, LUSTRE_MDD_NAME"-object@%p(open_count=%d, "
- "valid=%x, cltime="LPU64", flags=%lx)",
+ struct mdd_object *mdd = lu2mdd_obj((struct lu_object *)o);
+
+ return (*p)(env, cookie,
+ LUSTRE_MDD_NAME"-object@%p(open_count=%d, valid=%x, cltime=%lldns, flags=%lx)",
mdd, mdd->mod_count, mdd->mod_valid,
- mdd->mod_cltime, mdd->mod_flags);
+ ktime_to_ns(mdd->mod_cltime), mdd->mod_flags);
}
static const struct lu_object_operations mdd_lu_obj_ops = {
ENTRY;
- rc = mdd_la_get(env, mdd_obj, &ma->ma_attr,
- mdd_object_capa(env, md2mdd_obj(obj)));
+ rc = mdd_la_get(env, mdd_obj, &ma->ma_attr);
if ((ma->ma_need & MA_INODE) != 0 && mdd_is_dead_obj(mdd_obj))
ma->ma_attr.la_nlink = 0;
struct md_object *obj, struct lu_buf *buf,
const char *name)
{
- struct mdd_object *mdd_obj = md2mdd_obj(obj);
- int rc;
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+ struct mdd_device *mdd;
+ int rc;
- ENTRY;
+ ENTRY;
- if (mdd_object_exists(mdd_obj) == 0) {
- CERROR("%s: object "DFID" not found: rc = -2\n",
- mdd_obj_dev_name(mdd_obj),PFID(mdd_object_fid(mdd_obj)));
- return -ENOENT;
- }
+ if (mdd_object_exists(mdd_obj) == 0) {
+ CERROR("%s: object "DFID" not found: rc = -2\n",
+ mdd_obj_dev_name(mdd_obj),
+ PFID(mdd_object_fid(mdd_obj)));
+ return -ENOENT;
+ }
+
+ /* If the object has been destroyed, then do not get LMVEA, because
+ * it needs to load stripes from the iteration of the master object,
+ * and it will cause problem if master object has been destroyed, see
+ * LU-6427 */
+ if (unlikely((mdd_obj->mod_flags & DEAD_OBJ) &&
+ !(mdd_obj->mod_flags & ORPHAN_OBJ) &&
+ strcmp(name, XATTR_NAME_LMV) == 0))
+ RETURN(-ENOENT);
/* If the object has been delete from the namespace, then
* get linkEA should return -ENOENT as well */
strcmp(name, XATTR_NAME_LINK) == 0))
RETURN(-ENOENT);
- mdd_read_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = mdo_xattr_get(env, mdd_obj, buf, name,
- mdd_object_capa(env, mdd_obj));
- mdd_read_unlock(env, mdd_obj);
+ mdd_read_lock(env, mdd_obj, MOR_TGT_CHILD);
+ rc = mdo_xattr_get(env, mdd_obj, buf, name);
+ mdd_read_unlock(env, mdd_obj);
- RETURN(rc);
+ mdd = mdo2mdd(obj);
+
+ /* record only getting user xattrs and acls */
+ if (rc >= 0 && buf->lb_buf &&
+ mdd_changelog_enabled(env, mdd, CL_GETXATTR) &&
+ (has_prefix(name, XATTR_USER_PREFIX) ||
+ has_prefix(name, XATTR_NAME_POSIX_ACL_ACCESS) ||
+ has_prefix(name, XATTR_NAME_POSIX_ACL_DEFAULT))) {
+ struct thandle *handle;
+ int rc2;
+
+ LASSERT(mdo2fid(mdd_obj) != NULL);
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ rc2 = mdd_declare_changelog_store(env, mdd, CL_GETXATTR, NULL,
+ NULL, handle);
+ if (rc2)
+ GOTO(stop, rc2);
+
+ rc2 = mdd_trans_start(env, mdd, handle);
+ if (rc2)
+ GOTO(stop, rc2);
+
+ rc2 = mdd_changelog_data_store_by_fid(env, mdd, CL_GETXATTR, 0,
+ mdo2fid(mdd_obj), name,
+ handle);
+
+stop:
+ rc2 = mdd_trans_stop(env, mdd, rc2, handle);
+ if (rc2)
+ rc = rc2;
+ }
+
+ RETURN(rc);
}
/*
LASSERT(next->do_body_ops != NULL);
LASSERT(next->do_body_ops->dbo_read != NULL);
mdd_read_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = next->do_body_ops->dbo_read(env, next, buf, &pos,
- mdd_object_capa(env, mdd_obj));
+ rc = dt_read(env, next, buf, &pos);
mdd_read_unlock(env, mdd_obj);
RETURN(rc);
}
ENTRY;
mdd_read_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = mdo_xattr_list(env, mdd_obj, buf, mdd_object_capa(env, mdd_obj));
+ rc = mdo_xattr_list(env, mdd_obj, buf);
mdd_read_unlock(env, mdd_obj);
- RETURN(rc);
+ /* If the buffer is NULL then we are only here to get the
+ * length of the xattr name list. */
+ if (rc < 0 || buf->lb_buf == NULL)
+ RETURN(rc);
+
+ /*
+ * Filter out XATTR_NAME_LINK if this is an orphan object. See
+ * mdd_xattr_get().
+ */
+ if (unlikely(mdd_obj->mod_flags & (DEAD_OBJ | ORPHAN_OBJ))) {
+ char *end = (char *)buf->lb_buf + rc;
+ char *p = buf->lb_buf;
+
+ while (p < end) {
+ char *next = p + strlen(p) + 1;
+
+ if (strcmp(p, XATTR_NAME_LINK) == 0) {
+ if (end - next > 0)
+ memmove(p, next, end - next);
+ rc -= next - p;
+ CDEBUG(D_INFO, "Filtered out "XATTR_NAME_LINK
+ " of orphan "DFID"\n",
+ PFID(mdd_object_fid(mdd_obj)));
+ break;
+ }
+
+ p = next;
+ }
+ }
+
+ RETURN(rc);
+}
+
+int mdd_invalidate(const struct lu_env *env, struct md_object *obj)
+{
+ return mdo_invalidate(env, md2mdd_obj(obj));
}
-int mdd_declare_object_create_internal(const struct lu_env *env,
+int mdd_declare_create_object_internal(const struct lu_env *env,
struct mdd_object *p,
struct mdd_object *c,
struct lu_attr *attr,
const struct md_op_spec *spec,
struct dt_allocation_hint *hint)
{
- struct dt_object_format *dof = &mdd_env_info(env)->mti_dof;
- const struct dt_index_features *feat = spec->sp_feat;
- int rc;
- ENTRY;
+ struct dt_object_format *dof = &mdd_env_info(env)->mti_dof;
+ const struct dt_index_features *feat = spec->sp_feat;
+ int rc;
+ ENTRY;
if (feat != &dt_directory_features && feat != NULL) {
- dof->dof_type = DFT_INDEX;
+ dof->dof_type = DFT_INDEX;
dof->u.dof_idx.di_feat = feat;
-
} else {
dof->dof_type = dt_mode_to_dft(attr->la_mode);
if (dof->dof_type == DFT_REGULAR) {
}
}
- rc = mdo_declare_create_obj(env, c, attr, hint, dof, handle);
+ rc = mdo_declare_create_object(env, c, attr, hint, dof, handle);
- RETURN(rc);
+ RETURN(rc);
}
-int mdd_object_create_internal(const struct lu_env *env, struct mdd_object *p,
+int mdd_create_object_internal(const struct lu_env *env, struct mdd_object *p,
struct mdd_object *c, struct lu_attr *attr,
struct thandle *handle,
const struct md_op_spec *spec,
struct dt_allocation_hint *hint)
{
- struct dt_object_format *dof = &mdd_env_info(env)->mti_dof;
- int rc;
- ENTRY;
+ struct dt_object_format *dof = &mdd_env_info(env)->mti_dof;
+ int rc;
+ ENTRY;
LASSERT(!mdd_object_exists(c));
- rc = mdo_create_obj(env, c, attr, hint, dof, handle);
-
- LASSERT(ergo(rc == 0, mdd_object_exists(c)));
+ rc = mdo_create_object(env, c, attr, hint, dof, handle);
RETURN(rc);
}
const struct lu_attr *attr, struct thandle *handle,
int needacl)
{
- int rc;
- ENTRY;
+ int rc;
+ ENTRY;
- rc = mdo_attr_set(env, obj, attr, handle, mdd_object_capa(env, obj));
+ rc = mdo_attr_set(env, obj, attr, handle);
#ifdef CONFIG_FS_POSIX_ACL
- if (!rc && (attr->la_valid & LA_MODE) && needacl)
- rc = mdd_acl_chmod(env, obj, attr->la_mode, handle);
+ if (!rc && (attr->la_valid & LA_MODE) && needacl)
+ rc = mdd_acl_chmod(env, obj, attr->la_mode, handle);
#endif
- RETURN(rc);
+ RETURN(rc);
}
int mdd_update_time(const struct lu_env *env, struct mdd_object *obj,
LASSERT(oattr != NULL);
- /* export destroy does not have ->le_ses, but we may want
- * to drop LUSTRE_SOM_FL. */
uc = lu_ucred_check(env);
if (uc == NULL)
RETURN(0);
}
if (la->la_valid == LA_ATIME) {
- /* This is atime only set for read atime update on close. */
- if (la->la_atime >= oattr->la_atime &&
- la->la_atime < (oattr->la_atime +
+ /* This is an atime-only attribute update for close RPCs. */
+ if (la->la_atime < (oattr->la_atime +
mdd_obj2mdd_dev(obj)->mdd_atime_diff))
la->la_valid &= ~LA_ATIME;
RETURN(0);
/* Check if flags change. */
if (la->la_valid & LA_FLAGS) {
- unsigned int oldflags = 0;
+ unsigned int oldflags = oattr->la_flags &
+ (LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL);
unsigned int newflags = la->la_flags &
(LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL);
!md_capable(uc, CFS_CAP_FOWNER))
RETURN(-EPERM);
- /* XXX: the IMMUTABLE and APPEND_ONLY flags can
+ /* The IMMUTABLE and APPEND_ONLY flags can
* only be changed by the relevant capability. */
- if (mdd_is_immutable(obj))
- oldflags |= LUSTRE_IMMUTABLE_FL;
- if (mdd_is_append(obj))
- oldflags |= LUSTRE_APPEND_FL;
if ((oldflags ^ newflags) &&
!md_capable(uc, CFS_CAP_LINUX_IMMUTABLE))
RETURN(-EPERM);
if (!S_ISDIR(oattr->la_mode))
- la->la_flags &= ~LUSTRE_DIRSYNC_FL;
+ la->la_flags &= ~(LUSTRE_DIRSYNC_FL | LUSTRE_TOPDIR_FL);
}
- if ((mdd_is_immutable(obj) || mdd_is_append(obj)) &&
+ if (oattr->la_flags & (LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL) &&
(la->la_valid & ~LA_FLAGS) &&
!(flags & MDS_PERM_BYPASS))
RETURN(-EPERM);
}
}
- /* For both Size-on-MDS case and truncate case,
- * "la->la_valid & (LA_SIZE | LA_BLOCKS)" are ture.
- * We distinguish them by "flags & MDS_SOM".
- * For SOM case, it is true, the MAY_WRITE perm has been checked
- * when open, no need check again. For truncate case, it is false,
- * the MAY_WRITE perm should be checked here. */
- if (flags & MDS_SOM) {
- /* For the "Size-on-MDS" setattr update, merge coming
- * attributes with the set in the inode. BUG 10641 */
- if ((la->la_valid & LA_ATIME) &&
- (la->la_atime <= oattr->la_atime))
- la->la_valid &= ~LA_ATIME;
-
- /* OST attributes do not have a priority over MDS attributes,
- * so drop times if ctime is equal. */
- if ((la->la_valid & LA_CTIME) &&
- (la->la_ctime <= oattr->la_ctime))
- la->la_valid &= ~(LA_MTIME | LA_CTIME);
- } else {
- if (la->la_valid & (LA_SIZE | LA_BLOCKS)) {
- if (!((flags & MDS_OWNEROVERRIDE) &&
- (uc->uc_fsuid == oattr->la_uid)) &&
- !(flags & MDS_PERM_BYPASS)) {
- rc = mdd_permission_internal(env, obj,
- oattr, MAY_WRITE);
- if (rc != 0)
- RETURN(rc);
- }
- }
- if (la->la_valid & LA_CTIME) {
- /* The pure setattr, it has the priority over what is
- * already set, do not drop it if ctime is equal. */
- if (la->la_ctime < oattr->la_ctime)
- la->la_valid &= ~(LA_ATIME | LA_MTIME |
- LA_CTIME);
+ if (la->la_valid & (LA_SIZE | LA_BLOCKS)) {
+ if (!((flags & MDS_OWNEROVERRIDE) &&
+ (uc->uc_fsuid == oattr->la_uid)) &&
+ !(flags & MDS_PERM_BYPASS)) {
+ rc = mdd_permission_internal(env, obj, oattr,
+ MAY_WRITE);
+ if (rc != 0)
+ RETURN(rc);
}
}
+ if (la->la_valid & LA_CTIME) {
+ /* The pure setattr, it has the priority over what is
+ * already set, do not drop it if ctime is equal. */
+ if (la->la_ctime < oattr->la_ctime)
+ la->la_valid &= ~(LA_ATIME | LA_MTIME | LA_CTIME);
+ }
+
RETURN(0);
}
+static int mdd_changelog_data_store_by_fid(const struct lu_env *env,
+ struct mdd_device *mdd,
+ enum changelog_rec_type type,
+ enum changelog_rec_flags clf_flags,
+ const struct lu_fid *fid,
+ const char *xattr_name,
+ struct thandle *handle)
+{
+ const struct lu_ucred *uc = lu_ucred(env);
+ enum changelog_rec_extra_flags xflags = CLFE_INVALID;
+ struct llog_changelog_rec *rec;
+ struct lu_buf *buf;
+ int reclen;
+ int rc;
+
+ clf_flags = (clf_flags & CLF_FLAGMASK) | CLF_VERSION | CLF_EXTRA_FLAGS;
+
+ if (uc) {
+ if (uc->uc_jobid[0] != '\0')
+ clf_flags |= CLF_JOBID;
+ xflags |= CLFE_UIDGID;
+ xflags |= CLFE_NID;
+ }
+ if (type == CL_OPEN || type == CL_DN_OPEN)
+ xflags |= CLFE_OPEN;
+ if (type == CL_SETXATTR || type == CL_GETXATTR)
+ xflags |= CLFE_XATTR;
+
+ reclen = llog_data_len(LLOG_CHANGELOG_HDR_SZ +
+ changelog_rec_offset(clf_flags & CLF_SUPPORTED,
+ xflags & CLFE_SUPPORTED));
+ buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ rec = buf->lb_buf;
+
+ rec->cr_hdr.lrh_len = reclen;
+ rec->cr.cr_flags = clf_flags;
+ rec->cr.cr_type = (__u32)type;
+ rec->cr.cr_tfid = *fid;
+ rec->cr.cr_namelen = 0;
+
+ if (clf_flags & CLF_JOBID)
+ mdd_changelog_rec_ext_jobid(&rec->cr, uc->uc_jobid);
+
+ if (clf_flags & CLF_EXTRA_FLAGS) {
+ mdd_changelog_rec_ext_extra_flags(&rec->cr, xflags);
+ if (xflags & CLFE_UIDGID)
+ mdd_changelog_rec_extra_uidgid(&rec->cr,
+ uc->uc_uid, uc->uc_gid);
+ if (xflags & CLFE_NID)
+ mdd_changelog_rec_extra_nid(&rec->cr, uc->uc_nid);
+ if (xflags & CLFE_OPEN)
+ mdd_changelog_rec_extra_omode(&rec->cr, clf_flags);
+ if (xflags & CLFE_XATTR) {
+ if (xattr_name == NULL)
+ RETURN(-EINVAL);
+ mdd_changelog_rec_extra_xattr(&rec->cr, xattr_name);
+ }
+ }
+
+ rc = mdd_changelog_store(env, mdd, rec, handle);
+ RETURN(rc);
+}
+
+
/** Store a data change changelog record
* If this fails, we must fail the whole transaction; we don't
* want the change to commit without the log entry.
* \param mdd_obj - mdd_object of change
- * \param handle - transacion handle
+ * \param handle - transaction handle
*/
int mdd_changelog_data_store(const struct lu_env *env, struct mdd_device *mdd,
- enum changelog_rec_type type, int flags,
+ enum changelog_rec_type type,
+ enum changelog_rec_flags clf_flags,
struct mdd_object *mdd_obj, struct thandle *handle)
{
- const struct lu_fid *tfid;
- struct llog_changelog_rec *rec;
- struct lu_buf *buf;
- int reclen;
int rc;
- /* Not recording */
- if (!(mdd->mdd_cl.mc_flags & CLM_ON))
- RETURN(0);
- if ((mdd->mdd_cl.mc_mask & (1 << type)) == 0)
- RETURN(0);
+ LASSERT(mdd_obj != NULL);
+ LASSERT(handle != NULL);
- LASSERT(mdd_obj != NULL);
- LASSERT(handle != NULL);
+ if (!mdd_changelog_enabled(env, mdd, type))
+ RETURN(0);
- tfid = mdo2fid(mdd_obj);
+ if (mdd_is_volatile_obj(mdd_obj))
+ RETURN(0);
- if ((type >= CL_MTIME) && (type <= CL_ATIME) &&
- cfs_time_before_64(mdd->mdd_cl.mc_starttime, mdd_obj->mod_cltime)) {
- /* Don't need multiple updates in this log */
- /* Don't check under lock - no big deal if we get an extra
- entry */
- RETURN(0);
- }
+ if ((type >= CL_MTIME) && (type <= CL_ATIME) &&
+ ktime_before(mdd->mdd_cl.mc_starttime, mdd_obj->mod_cltime)) {
+ /* Don't need multiple updates in this log */
+ /* Don't check under lock - no big deal if we get an extra
+ entry */
+ RETURN(0);
+ }
- reclen = llog_data_len(sizeof(*rec));
- buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
- if (buf->lb_buf == NULL)
- RETURN(-ENOMEM);
- rec = buf->lb_buf;
+ rc = mdd_changelog_data_store_by_fid(env, mdd, type, clf_flags,
+ mdo2fid(mdd_obj), NULL, handle);
+ if (rc == 0)
+ mdd_obj->mod_cltime = ktime_get();
- rec->cr.cr_flags = CLF_VERSION | (CLF_FLAGMASK & flags);
- rec->cr.cr_type = (__u32)type;
- rec->cr.cr_tfid = *tfid;
- rec->cr.cr_namelen = 0;
- mdd_obj->mod_cltime = cfs_time_current_64();
+ RETURN(rc);
+}
- rc = mdd_changelog_store(env, mdd, rec, handle);
+int mdd_changelog_data_store_xattr(const struct lu_env *env,
+ struct mdd_device *mdd,
+ enum changelog_rec_type type,
+ enum changelog_rec_flags clf_flags,
+ struct mdd_object *mdd_obj,
+ const char *xattr_name,
+ struct thandle *handle)
+{
+ int rc;
+
+ LASSERT(mdd_obj != NULL);
+ LASSERT(handle != NULL);
+
+ if (!mdd_changelog_enabled(env, mdd, type))
+ RETURN(0);
+
+ if (mdd_is_volatile_obj(mdd_obj))
+ RETURN(0);
+
+ if ((type >= CL_MTIME) && (type <= CL_ATIME) &&
+ ktime_before(mdd->mdd_cl.mc_starttime, mdd_obj->mod_cltime)) {
+ /* Don't need multiple updates in this log */
+ /* Don't check under lock - no big deal if we get an extra
+ * entry
+ */
+ RETURN(0);
+ }
+
+ rc = mdd_changelog_data_store_by_fid(env, mdd, type, clf_flags,
+ mdo2fid(mdd_obj), xattr_name,
+ handle);
+ if (rc == 0)
+ mdd_obj->mod_cltime = ktime_get();
RETURN(rc);
}
+/* only the bottom CLF_FLAGSHIFT bits of @flags are stored in the record,
+ * except for open flags have a dedicated record to store 32 bits of flags */
static int mdd_changelog(const struct lu_env *env, enum changelog_rec_type type,
- int flags, struct md_object *obj)
+ enum changelog_rec_flags clf_flags,
+ struct md_device *m, const struct lu_fid *fid)
{
- struct thandle *handle;
- struct mdd_object *mdd_obj = md2mdd_obj(obj);
- struct mdd_device *mdd = mdo2mdd(obj);
- int rc;
- ENTRY;
+ struct thandle *handle;
+ struct mdd_device *mdd = lu2mdd_dev(&m->md_lu_dev);
+ int rc;
+ ENTRY;
+
+ LASSERT(fid != NULL);
+
+ /* We'll check this again below, but we check now before we
+ * start a transaction. */
+ if (!mdd_changelog_enabled(env, mdd, type))
+ RETURN(0);
- handle = mdd_trans_create(env, mdd);
- if (IS_ERR(handle))
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
RETURN(PTR_ERR(handle));
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_declare_changelog_store(env, mdd, type, NULL, NULL, handle);
+ if (rc)
+ GOTO(stop, rc);
- rc = mdd_trans_start(env, mdd, handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(stop, rc);
- rc = mdd_changelog_data_store(env, mdd, type, flags, mdd_obj,
- handle);
+ rc = mdd_changelog_data_store_by_fid(env, mdd, type, clf_flags,
+ fid, NULL, handle);
stop:
- mdd_trans_stop(env, mdd, rc, handle);
+ rc = mdd_trans_stop(env, mdd, rc, handle);
- RETURN(rc);
+ RETURN(rc);
}
/**
struct md_object *obj, struct thandle *handle,
__u64 valid)
{
- struct mdd_device *mdd = mdo2mdd(obj);
- int bits, type = 0;
+ struct mdd_device *mdd = mdo2mdd(obj);
+ int bits, type = 0;
bits = (valid & LA_SIZE) ? 1 << CL_TRUNC : 0;
bits |= (valid & ~(LA_CTIME|LA_MTIME|LA_ATIME)) ? 1 << CL_SETATTR : 0;
- bits |= (valid & LA_MTIME) ? 1 << CL_MTIME : 0;
- bits |= (valid & LA_CTIME) ? 1 << CL_CTIME : 0;
- bits |= (valid & LA_ATIME) ? 1 << CL_ATIME : 0;
- bits = bits & mdd->mdd_cl.mc_mask;
+ bits |= (valid & LA_MTIME) ? 1 << CL_MTIME : 0;
+ bits |= (valid & LA_CTIME) ? 1 << CL_CTIME : 0;
+ bits |= (valid & LA_ATIME) ? 1 << CL_ATIME : 0;
+ bits = bits & mdd->mdd_cl.mc_mask;
/* This is an implementation limit rather than a protocol limit */
CLASSERT(CL_LAST <= sizeof(int) * 8);
- if (bits == 0)
- return 0;
+ if (bits == 0)
+ return 0;
- /* The record type is the lowest non-masked set bit */
+ /* The record type is the lowest non-masked set bit */
type = __ffs(bits);
- /* FYI we only store the first CLF_FLAGMASK bits of la_valid */
- return mdd_changelog_data_store(env, mdd, type, (int)valid,
- md2mdd_obj(obj), handle);
+ /* XXX: we only store the low CLF_FLAGMASK bits of la_valid */
+ return mdd_changelog_data_store(env, mdd, type, valid,
+ md2mdd_obj(obj), handle);
}
static int mdd_declare_attr_set(const struct lu_env *env,
if (attr->la_valid & LA_MODE) {
mdd_read_lock(env, obj, MOR_TGT_CHILD);
rc = mdo_xattr_get(env, obj, &LU_BUF_NULL,
- XATTR_NAME_ACL_ACCESS, BYPASS_CAPA);
+ XATTR_NAME_ACL_ACCESS);
mdd_read_unlock(env, obj);
if (rc == -EOPNOTSUPP || rc == -ENODATA)
rc = 0;
}
#endif
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
+ rc = mdd_declare_changelog_store(env, mdd, CL_SETXATTR, NULL, NULL,
+ handle);
return rc;
}
/*
* LU-3671
+ * LU-7239
*
* permission changes may require sync operation, to mitigate performance
* impact, only do this for dir and when permission is reduced.
if (!S_ISDIR(old->la_mode))
return false;
- if (new->la_valid & (LA_UID | LA_GID))
+ if (new->la_valid & LA_UID && old->la_uid != new->la_uid)
return true;
- if (new->la_valid & LA_MODE &&
- new->la_mode & (S_ISUID | S_ISGID | S_ISVTX))
+ if (new->la_valid & LA_GID && old->la_gid != new->la_gid)
return true;
- if ((new->la_valid & LA_MODE) &&
- ((new->la_mode & old->la_mode) & S_IRWXUGO) !=
- (old->la_mode & S_IRWXUGO))
- return true;
+ if (new->la_valid & LA_MODE) {
+ /* turned on sticky bit */
+ if (!(old->la_mode & S_ISVTX) && (new->la_mode & S_ISVTX))
+ return true;
+
+ /* set-GID has no impact on what is allowed, not checked */
+
+ /* turned off setuid bit, or one of rwx for someone */
+ if (((new->la_mode & old->la_mode) & (0777 | S_ISUID)) !=
+ (old->la_mode & (0777 | S_ISUID)))
+ return true;
+ }
return false;
}
+static inline __u64 mdd_lmm_dom_size(void *buf)
+{
+ struct lov_mds_md *lmm = buf;
+ struct lov_comp_md_v1 *comp_v1;
+ struct lov_mds_md *v1;
+ __u32 off;
+
+ if (lmm == NULL)
+ return 0;
+
+ if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
+ return 0;
+
+ comp_v1 = (struct lov_comp_md_v1 *)lmm;
+ off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
+ v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
+
+ /* DoM entry is the first entry always */
+ if (lov_pattern(le32_to_cpu(v1->lmm_pattern)) == LOV_PATTERN_MDT)
+ return le64_to_cpu(comp_v1->lcm_entries[0].lcme_extent.e_end);
+
+ return 0;
+}
+
/* set attr and LOV EA at once, return updated attr */
int mdd_attr_set(const struct lu_env *env, struct md_object *obj,
const struct md_attr *ma)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
struct mdd_device *mdd = mdo2mdd(obj);
- struct thandle *handle;
+ struct thandle *handle = NULL;
struct lu_attr *la_copy = &mdd_env_info(env)->mti_la_for_fix;
struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
const struct lu_attr *la = &ma->ma_attr;
+ struct lu_ucred *uc;
+ bool chrgrp_by_unprivileged_user = false;
int rc;
ENTRY;
- /* we do not use ->attr_set() for LOV/SOM/HSM EA any more */
+ /* we do not use ->attr_set() for LOV/HSM EA any more */
LASSERT((ma->ma_valid & MA_LOV) == 0);
LASSERT((ma->ma_valid & MA_HSM) == 0);
- LASSERT((ma->ma_valid & MA_SOM) == 0);
- rc = mdd_la_get(env, mdd_obj, attr, BYPASS_CAPA);
+ rc = mdd_la_get(env, mdd_obj, attr);
if (rc)
RETURN(rc);
if (rc)
RETURN(rc);
- /* setattr on "close" only change atime, or do nothing */
- if (la->la_valid == LA_ATIME && la_copy->la_valid == 0)
- RETURN(0);
+ /* no need to setattr anymore */
+ if (la_copy->la_valid == 0) {
+ CDEBUG(D_INODE, "%s: no valid attribute on "DFID", previous"
+ "valid is %#llx\n", mdd2obd_dev(mdd)->obd_name,
+ PFID(mdo2fid(mdd_obj)), la->la_valid);
- handle = mdd_trans_create(env, mdd);
- if (IS_ERR(handle))
- RETURN(PTR_ERR(handle));
+ RETURN(0);
+ }
- rc = mdd_declare_attr_set(env, mdd, mdd_obj, la, handle);
- if (rc)
- GOTO(stop, rc);
+ /* If an unprivileged user changes group of some file,
+ * the setattr operation will be processed synchronously to
+ * honor the quota limit of the corresponding group. see LU-5152 */
+ uc = lu_ucred_check(env);
+ if (S_ISREG(attr->la_mode) && la->la_valid & LA_GID &&
+ la->la_gid != attr->la_gid && uc != NULL && uc->uc_fsuid != 0) {
+ /* LU-10048: disable synchronous chgrp operation for it will
+ * cause deadlock between MDT and OST.
+ la_copy->la_valid |= LA_FLAGS;
+ la_copy->la_flags |= LUSTRE_SET_SYNC_FL;
+ */
+ chrgrp_by_unprivileged_user = true;
+
+ /* Flush the possible existing client setattr requests to OSTs
+ * to keep the order with the current setattr operation that
+ * will be sent directly to OSTs. see LU-5152 */
+ /* LU-11303 disable sync as this is too heavyweight.
+ * This should be replaced with a sync only for the object
+ * being modified here, not the whole filesystem.
+ rc = dt_sync(env, mdd->mdd_child);
+ if (rc)
+ GOTO(out, rc);
+ */
+ }
- rc = mdd_trans_start(env, mdd, handle);
- if (rc)
- GOTO(stop, rc);
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ handle = NULL;
+
+ GOTO(out, rc);
+ }
+
+ rc = mdd_declare_attr_set(env, mdd, mdd_obj, la_copy, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(out, rc);
- if (mdd->mdd_sync_permission && permission_needs_sync(attr, la))
+ if (!chrgrp_by_unprivileged_user && mdd->mdd_sync_permission &&
+ permission_needs_sync(attr, la))
handle->th_sync = 1;
if (la->la_valid & (LA_MTIME | LA_CTIME))
- CDEBUG(D_INODE, "setting mtime "LPU64", ctime "LPU64"\n",
+ CDEBUG(D_INODE, "setting mtime %llu, ctime %llu\n",
la->la_mtime, la->la_ctime);
mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
- if (la_copy->la_valid & LA_FLAGS) {
- rc = mdd_attr_set_internal(env, mdd_obj, la_copy, handle, 1);
- if (rc == 0)
- mdd_flags_xlate(mdd_obj, la_copy->la_flags);
- } else if (la_copy->la_valid) { /* setattr */
- rc = mdd_attr_set_internal(env, mdd_obj, la_copy, handle, 1);
- }
- mdd_write_unlock(env, mdd_obj);
- if (rc == 0)
- rc = mdd_attr_set_changelog(env, obj, handle, la->la_valid);
+ /* LU-10509: setattr of LA_SIZE should be skipped case of DOM,
+ * otherwise following truncate will do nothing and truncated
+ * data may be read again. This is a quick fix until LU-11033
+ * will be resolved.
+ */
+ if (la_copy->la_valid & LA_SIZE) {
+ struct lu_buf *lov_buf = mdd_buf_get(env, NULL, 0);
- GOTO(stop, rc);
+ rc = mdd_stripe_get(env, mdd_obj, lov_buf, XATTR_NAME_LOV);
+ if (rc) {
+ rc = 0;
+ } else {
+ if (mdd_lmm_dom_size(lov_buf->lb_buf) > 0)
+ la_copy->la_valid &= ~LA_SIZE;
+ lu_buf_free(lov_buf);
+ }
+ }
+
+ if (la_copy->la_valid) {
+ rc = mdd_attr_set_internal(env, mdd_obj, la_copy, handle, 1);
+
+ if (rc == -EDQUOT && la_copy->la_flags & LUSTRE_SET_SYNC_FL) {
+ /* rollback to the original gid */
+ la_copy->la_flags &= ~LUSTRE_SET_SYNC_FL;
+ la_copy->la_gid = attr->la_gid;
+ mdd_attr_set_internal(env, mdd_obj, la_copy, handle, 1);
+ }
+ }
+ mdd_write_unlock(env, mdd_obj);
+
+out:
+ if (rc == 0)
+ rc = mdd_attr_set_changelog(env, obj, handle,
+ la_copy->la_valid);
+
+ if (handle != NULL)
+ rc = mdd_trans_stop(env, mdd, rc, handle);
-stop:
- mdd_trans_stop(env, mdd, rc, handle);
return rc;
}
static int mdd_xattr_sanity_check(const struct lu_env *env,
struct mdd_object *obj,
- const struct lu_attr *attr)
+ const struct lu_attr *attr,
+ const char *name)
{
struct lu_ucred *uc = lu_ucred_assert(env);
ENTRY;
- if (mdd_is_immutable(obj) || mdd_is_append(obj))
+ if (attr->la_flags & (LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL))
RETURN(-EPERM);
- if ((uc->uc_fsuid != attr->la_uid) && !md_capable(uc, CFS_CAP_FOWNER))
+ if (strncmp(XATTR_USER_PREFIX, name,
+ sizeof(XATTR_USER_PREFIX) - 1) == 0) {
+ /* For sticky directories, only the owner and privileged user
+ * can write attributes. */
+ if (S_ISDIR(attr->la_mode) && (attr->la_mode & S_ISVTX) &&
+ (uc->uc_fsuid != attr->la_uid) &&
+ !md_capable(uc, CFS_CAP_FOWNER))
+ RETURN(-EPERM);
+ } else if (strcmp(name, XATTR_NAME_SOM) != 0 &&
+ (uc->uc_fsuid != attr->la_uid) &&
+ !md_capable(uc, CFS_CAP_FOWNER)) {
RETURN(-EPERM);
+ }
RETURN(0);
}
+/**
+ * Check if a string begins with a given prefix.
+ *
+ * \param str String to check
+ * \param prefix Substring to check at the beginning of \a str
+ * \return true/false whether the condition is verified.
+ */
+static inline bool has_prefix(const char *str, const char *prefix)
+{
+ return strncmp(prefix, str, strlen(prefix)) == 0;
+}
+
+/**
+ * Indicate the kind of changelog to store (if any) for a xattr set/del.
+ *
+ * \param[in] xattr_name Full extended attribute name.
+ *
+ * \return The type of changelog to use, or -1 if no changelog is to be emitted.
+ */
+static enum changelog_rec_type
+mdd_xattr_changelog_type(const struct lu_env *env, struct mdd_device *mdd,
+ const char *xattr_name)
+{
+ /* Layout changes systematically recorded */
+ if (strcmp(XATTR_NAME_LOV, xattr_name) == 0 ||
+ strncmp(XATTR_LUSTRE_LOV, xattr_name,
+ strlen(XATTR_LUSTRE_LOV)) == 0)
+ return CL_LAYOUT;
+
+ /* HSM information changes systematically recorded */
+ if (strcmp(XATTR_NAME_HSM, xattr_name) == 0)
+ return CL_HSM;
+
+ /* Avoid logging SOM xattr for every file */
+ if (strcmp(XATTR_NAME_SOM, xattr_name) == 0)
+ return CL_NONE;
+
+ if (has_prefix(xattr_name, XATTR_USER_PREFIX) ||
+ has_prefix(xattr_name, XATTR_NAME_POSIX_ACL_ACCESS) ||
+ has_prefix(xattr_name, XATTR_NAME_POSIX_ACL_DEFAULT) ||
+ has_prefix(xattr_name, XATTR_TRUSTED_PREFIX) ||
+ has_prefix(xattr_name, XATTR_SECURITY_PREFIX))
+ return CL_SETXATTR;
+
+ return CL_NONE;
+}
+
static int mdd_declare_xattr_set(const struct lu_env *env,
struct mdd_device *mdd,
struct mdd_object *obj,
const char *name,
int fl, struct thandle *handle)
{
- int rc;
+ enum changelog_rec_type type;
+ int rc;
rc = mdo_declare_xattr_set(env, obj, buf, name, fl, handle);
if (rc)
return rc;
- /* Only record user and layout xattr changes */
- if (strncmp(XATTR_USER_PREFIX, name,
- sizeof(XATTR_USER_PREFIX) - 1) == 0 ||
- strcmp(XATTR_NAME_LOV, name) == 0) {
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
- if (rc)
- return rc;
- }
-
- /* If HSM data is modified, this could add a changelog */
- if (strcmp(XATTR_NAME_HSM, name) == 0) {
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
- if (rc)
- return rc;
- }
+ type = mdd_xattr_changelog_type(env, mdd, name);
+ if (type < 0)
+ return 0; /* no changelog to store */
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
- return rc;
+ return mdd_declare_changelog_store(env, mdd, type, NULL, NULL, handle);
}
/*
static int mdd_hsm_update_locked(const struct lu_env *env,
struct md_object *obj,
const struct lu_buf *buf,
- struct thandle *handle)
+ struct thandle *handle,
+ enum changelog_rec_flags *clf_flags)
{
struct mdd_thread_info *info = mdd_env_info(env);
- struct mdd_device *mdd = mdo2mdd(obj);
- struct mdd_object *mdd_obj = md2mdd_obj(obj);
- struct lu_buf *current_buf;
- struct md_hsm *current_mh;
- struct md_hsm *new_mh;
- int rc;
- ENTRY;
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+ struct lu_buf *current_buf;
+ struct md_hsm *current_mh;
+ struct md_hsm *new_mh;
+ int rc;
+ ENTRY;
OBD_ALLOC_PTR(current_mh);
if (current_mh == NULL)
RETURN(-ENOMEM);
/* Read HSM attrs from disk */
- CLASSERT(sizeof(struct hsm_attrs) <= sizeof(info->mti_xattr_buf));
- current_buf = mdd_buf_get(env, info->mti_xattr_buf,
- sizeof(info->mti_xattr_buf));
- rc = mdo_xattr_get(env, mdd_obj, current_buf, XATTR_NAME_HSM,
- mdd_object_capa(env, mdd_obj));
+ current_buf = lu_buf_check_and_alloc(&info->mti_xattr_buf,
+ MIN(mdd_obj2mdd_dev(mdd_obj)->mdd_dt_conf.ddp_max_ea_size,
+ XATTR_SIZE_MAX));
+ rc = mdo_xattr_get(env, mdd_obj, current_buf, XATTR_NAME_HSM);
rc = lustre_buf2hsm(current_buf->lb_buf, rc, current_mh);
if (rc < 0 && rc != -ENODATA)
GOTO(free, rc);
GOTO(free, rc = -ENOMEM);
lustre_buf2hsm(buf->lb_buf, buf->lb_len, new_mh);
- /* If HSM flags are different, add a changelog */
rc = 0;
+
+ /* Flags differ, set flags for the changelog that will be added */
if (current_mh->mh_flags != new_mh->mh_flags) {
- int flags = 0;
- hsm_set_cl_event(&flags, HE_STATE);
+ hsm_set_cl_event(clf_flags, HE_STATE);
if (new_mh->mh_flags & HS_DIRTY)
- hsm_set_cl_flags(&flags, CLF_HSM_DIRTY);
-
- rc = mdd_changelog_data_store(env, mdd, CL_HSM, flags, mdd_obj,
- handle);
+ hsm_set_cl_flags(clf_flags, CLF_HSM_DIRTY);
}
OBD_FREE_PTR(new_mh);
+ EXIT;
free:
OBD_FREE_PTR(current_mh);
- return(rc);
+ return rc;
+}
+
+static int mdd_object_pfid_replace(const struct lu_env *env,
+ struct mdd_object *o)
+{
+ struct mdd_device *mdd = mdo2mdd(&o->mod_obj);
+ struct thandle *handle;
+ int rc;
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ handle->th_complex = 1;
+
+ /* it doesn't need to track the PFID update via llog, because LFSCK
+ * will repair it even it goes wrong */
+ rc = mdd_declare_xattr_set(env, mdd, o, NULL, XATTR_NAME_FID,
+ 0, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = mdo_xattr_set(env, o, NULL, XATTR_NAME_FID, 0, handle);
+ if (rc)
+ GOTO(out, rc);
+
+out:
+ mdd_trans_stop(env, mdd, rc, handle);
+ return rc;
}
+
+static int mdd_declare_xattr_del(const struct lu_env *env,
+ struct mdd_device *mdd,
+ struct mdd_object *obj,
+ const char *name,
+ struct thandle *handle);
+
static int mdd_xattr_del(const struct lu_env *env, struct md_object *obj,
const char *name);
+static int mdd_xattr_merge(const struct lu_env *env, struct md_object *md_obj,
+ struct md_object *md_vic)
+{
+ struct mdd_device *mdd = mdo2mdd(md_obj);
+ struct mdd_object *obj = md2mdd_obj(md_obj);
+ struct mdd_object *vic = md2mdd_obj(md_vic);
+ struct lu_buf *buf = &mdd_env_info(env)->mti_buf[0];
+ struct lu_buf *buf_vic = &mdd_env_info(env)->mti_buf[1];
+ struct lov_mds_md *lmm;
+ struct thandle *handle;
+ int rc;
+ ENTRY;
+
+ rc = lu_fid_cmp(mdo2fid(obj), mdo2fid(vic));
+ if (rc == 0) /* same fid */
+ RETURN(-EPERM);
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ if (rc > 0) {
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ mdd_write_lock(env, vic, MOR_TGT_CHILD);
+ } else {
+ mdd_write_lock(env, vic, MOR_TGT_CHILD);
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ }
+
+ /* get EA of victim file */
+ memset(buf_vic, 0, sizeof(*buf_vic));
+ rc = mdd_stripe_get(env, vic, buf_vic, XATTR_NAME_LOV);
+ if (rc < 0) {
+ if (rc == -ENODATA)
+ rc = 0;
+ GOTO(out, rc);
+ }
+
+ /* parse the layout of victim file */
+ lmm = buf_vic->lb_buf;
+ if (le32_to_cpu(lmm->lmm_magic) != LOV_MAGIC_COMP_V1)
+ GOTO(out, rc = -EINVAL);
+
+ /* save EA of target file for restore */
+ memset(buf, 0, sizeof(*buf));
+ rc = mdd_stripe_get(env, obj, buf, XATTR_NAME_LOV);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ /* Get rid of the layout from victim object */
+ rc = mdd_declare_xattr_del(env, mdd, vic, XATTR_NAME_LOV, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_declare_xattr_set(env, mdd, obj, buf_vic, XATTR_LUSTRE_LOV,
+ LU_XATTR_MERGE, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(out, rc);
+
+ rc = mdo_xattr_set(env, obj, buf_vic, XATTR_LUSTRE_LOV, LU_XATTR_MERGE,
+ handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdo_xattr_del(env, vic, XATTR_NAME_LOV, handle);
+ if (rc) /* wtf? */
+ GOTO(out_restore, rc);
+
+ (void)mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, obj, handle);
+ (void)mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, vic, handle);
+ EXIT;
+
+out_restore:
+ if (rc) {
+ int rc2 = mdo_xattr_set(env, obj, buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle);
+ if (rc2)
+ CERROR("%s: failed to rollback of layout of: "DFID
+ ": %d, file state unknown\n",
+ mdd_obj_dev_name(obj), PFID(mdo2fid(obj)), rc2);
+ }
+
+out:
+ mdd_trans_stop(env, mdd, rc, handle);
+ mdd_write_unlock(env, obj);
+ mdd_write_unlock(env, vic);
+ lu_buf_free(buf);
+ lu_buf_free(buf_vic);
+
+ if (!rc)
+ (void) mdd_object_pfid_replace(env, obj);
+
+ return rc;
+}
+
+/**
+ * Extract the mirror with specified mirror id, and store the splitted
+ * mirror layout to @buf.
+ *
+ * \param[in] comp_v1 mirrored layout
+ * \param[in] mirror_id the mirror with mirror_id to be extracted
+ * \param[out] buf store the layout excluding the extracted mirror,
+ * caller free the buffer we allocated in this function
+ * \param[out] buf_vic store the extracted layout, caller free the buffer
+ * we allocated in this function
+ *
+ * \retval 0 on success; < 0 if error happens
+ */
+static int mdd_split_ea(struct lov_comp_md_v1 *comp_v1, __u16 mirror_id,
+ struct lu_buf *buf, struct lu_buf *buf_vic)
+{
+ struct lov_comp_md_v1 *comp_rem;
+ struct lov_comp_md_v1 *comp_vic;
+ struct lov_comp_md_entry_v1 *entry;
+ struct lov_comp_md_entry_v1 *entry_rem;
+ struct lov_comp_md_entry_v1 *entry_vic;
+ __u16 mirror_cnt;
+ __u16 comp_cnt, count = 0;
+ int lmm_size, lmm_size_vic = 0;
+ int i, j, k;
+ int offset, offset_rem, offset_vic;
+
+ mirror_cnt = le16_to_cpu(comp_v1->lcm_mirror_count) + 1;
+ /* comp_v1 should contains more than 1 mirror */
+ if (mirror_cnt <= 1)
+ return -EINVAL;
+ comp_cnt = le16_to_cpu(comp_v1->lcm_entry_count);
+ lmm_size = le32_to_cpu(comp_v1->lcm_size);
+
+ for (i = 0; i < comp_cnt; i++) {
+ entry = &comp_v1->lcm_entries[i];
+ if (mirror_id_of(le32_to_cpu(entry->lcme_id)) == mirror_id) {
+ count++;
+ lmm_size_vic += sizeof(*entry);
+ lmm_size_vic += le32_to_cpu(entry->lcme_size);
+ } else if (count > 0) {
+ /* find the specified mirror */
+ break;
+ }
+ }
+
+ if (count == 0)
+ return -EINVAL;
+
+ lu_buf_alloc(buf, lmm_size - lmm_size_vic);
+ if (!buf->lb_buf)
+ return -ENOMEM;
+
+ lu_buf_alloc(buf_vic, sizeof(*comp_vic) + lmm_size_vic);
+ if (!buf_vic->lb_buf) {
+ lu_buf_free(buf);
+ return -ENOMEM;
+ }
+
+ comp_rem = (struct lov_comp_md_v1 *)buf->lb_buf;
+ comp_vic = (struct lov_comp_md_v1 *)buf_vic->lb_buf;
+
+ memcpy(comp_rem, comp_v1, sizeof(*comp_v1));
+ comp_rem->lcm_mirror_count = cpu_to_le16(mirror_cnt - 2);
+ comp_rem->lcm_entry_count = cpu_to_le32(comp_cnt - count);
+ comp_rem->lcm_size = cpu_to_le32(lmm_size - lmm_size_vic);
+ if (!comp_rem->lcm_mirror_count)
+ comp_rem->lcm_flags = cpu_to_le16(LCM_FL_NONE);
+
+ memset(comp_vic, 0, sizeof(*comp_v1));
+ comp_vic->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
+ comp_vic->lcm_mirror_count = 0;
+ comp_vic->lcm_entry_count = cpu_to_le32(count);
+ comp_vic->lcm_size = cpu_to_le32(lmm_size_vic + sizeof(*comp_vic));
+ comp_vic->lcm_flags = cpu_to_le16(LCM_FL_NONE);
+ comp_vic->lcm_layout_gen = 0;
+
+ offset = sizeof(*comp_v1) + sizeof(*entry) * comp_cnt;
+ offset_rem = sizeof(*comp_rem) +
+ sizeof(*entry_rem) * (comp_cnt - count);
+ offset_vic = sizeof(*comp_vic) + sizeof(*entry_vic) * count;
+ for (i = j = k = 0; i < comp_cnt; i++) {
+ struct lov_mds_md *lmm, *lmm_dst;
+ bool vic = false;
+
+ entry = &comp_v1->lcm_entries[i];
+ entry_vic = &comp_vic->lcm_entries[j];
+ entry_rem = &comp_rem->lcm_entries[k];
+
+ if (mirror_id_of(le32_to_cpu(entry->lcme_id)) == mirror_id)
+ vic = true;
+
+ /* copy component entry */
+ if (vic) {
+ memcpy(entry_vic, entry, sizeof(*entry));
+ entry_vic->lcme_flags &= cpu_to_le32(LCME_FL_INIT);
+ entry_vic->lcme_offset = cpu_to_le32(offset_vic);
+ j++;
+ } else {
+ memcpy(entry_rem, entry, sizeof(*entry));
+ entry_rem->lcme_offset = cpu_to_le32(offset_rem);
+ k++;
+ }
+
+ lmm = (struct lov_mds_md *)((char *)comp_v1 + offset);
+ if (vic)
+ lmm_dst = (struct lov_mds_md *)
+ ((char *)comp_vic + offset_vic);
+ else
+ lmm_dst = (struct lov_mds_md *)
+ ((char *)comp_rem + offset_rem);
+
+ /* copy component entry blob */
+ memcpy(lmm_dst, lmm, le32_to_cpu(entry->lcme_size));
+
+ /* blob offset advance */
+ offset += le32_to_cpu(entry->lcme_size);
+ if (vic)
+ offset_vic += le32_to_cpu(entry->lcme_size);
+ else
+ offset_rem += le32_to_cpu(entry->lcme_size);
+ }
+
+ return 0;
+}
+
+static int mdd_xattr_split(const struct lu_env *env, struct md_object *md_obj,
+ struct md_rejig_data *mrd)
+{
+ struct mdd_device *mdd = mdo2mdd(md_obj);
+ struct mdd_object *obj = md2mdd_obj(md_obj);
+ struct mdd_object *vic = md2mdd_obj(mrd->mrd_obj);
+ struct lu_buf *buf = &mdd_env_info(env)->mti_buf[0];
+ struct lu_buf *buf_save = &mdd_env_info(env)->mti_buf[1];
+ struct lu_buf *buf_vic = &mdd_env_info(env)->mti_buf[2];
+ struct lov_comp_md_v1 *lcm;
+ struct thandle *handle;
+ int rc;
+ ENTRY;
+
+ rc = lu_fid_cmp(mdo2fid(obj), mdo2fid(vic));
+ if (rc == 0) /* same fid */
+ RETURN(-EPERM);
+
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
+
+ if (rc > 0) {
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ mdd_write_lock(env, vic, MOR_TGT_CHILD);
+ } else {
+ mdd_write_lock(env, vic, MOR_TGT_CHILD);
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ }
+
+ /* get EA of mirrored file */
+ memset(buf_save, 0, sizeof(*buf));
+ rc = mdd_stripe_get(env, obj, buf_save, XATTR_NAME_LOV);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ lcm = buf_save->lb_buf;
+ if (le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
+ GOTO(out, rc = -EINVAL);
+
+ /**
+ * Extract the mirror with specified mirror id, and store the splitted
+ * mirror layout to the victim file.
+ */
+ memset(buf, 0, sizeof(*buf));
+ memset(buf_vic, 0, sizeof(*buf_vic));
+ rc = mdd_split_ea(lcm, mrd->mrd_mirror_id, buf, buf_vic);
+ if (rc < 0)
+ GOTO(out, rc);
+
+ rc = mdd_declare_xattr_set(env, mdd, obj, buf, XATTR_NAME_LOV,
+ LU_XATTR_SPLIT, handle);
+ if (rc)
+ GOTO(out, rc);
+ rc = mdd_declare_xattr_set(env, mdd, vic, buf_vic, XATTR_NAME_LOV,
+ LU_XATTR_SPLIT, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdo_xattr_set(env, obj, buf, XATTR_NAME_LOV, LU_XATTR_REPLACE,
+ handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdo_xattr_set(env, vic, buf_vic, XATTR_NAME_LOV, LU_XATTR_CREATE,
+ handle);
+ if (rc)
+ GOTO(out_restore, rc);
+
+ rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, obj, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, vic, handle);
+ if (rc)
+ GOTO(out, rc);
+ EXIT;
+
+out_restore:
+ if (rc) {
+ /* restore obj's layout */
+ int rc2 = mdo_xattr_set(env, obj, buf_save, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle);
+ if (rc2)
+ CERROR("%s: failed to rollback of layout of: "DFID
+ ": %d, file state unkonwn.\n",
+ mdd_obj_dev_name(obj), PFID(mdo2fid(obj)), rc2);
+ }
+out:
+ mdd_trans_stop(env, mdd, rc, handle);
+ mdd_write_unlock(env, obj);
+ mdd_write_unlock(env, vic);
+ lu_buf_free(buf_save);
+ lu_buf_free(buf);
+ lu_buf_free(buf_vic);
+
+ if (!rc)
+ (void) mdd_object_pfid_replace(env, obj);
+
+ return rc;
+}
+
+static int mdd_layout_merge_allowed(const struct lu_env *env,
+ struct md_object *target,
+ struct md_object *victim)
+{
+ struct mdd_object *o1 = md2mdd_obj(target);
+
+ /* cannot extend directory's LOVEA */
+ if (S_ISDIR(mdd_object_type(o1))) {
+ CERROR("%s: Don't extend directory's LOVEA, just set it.\n",
+ mdd_obj_dev_name(o1));
+ RETURN(-EISDIR);
+ }
+
+ RETURN(0);
+}
+
/**
* The caller should guarantee to update the object ctime
* after xattr_set if needed.
const struct lu_buf *buf, const char *name,
int fl)
{
- struct mdd_object *mdd_obj = md2mdd_obj(obj);
- struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
- struct mdd_device *mdd = mdo2mdd(obj);
- struct thandle *handle;
- int rc;
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+ struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
+ struct mdd_device *mdd = mdo2mdd(obj);
+ struct thandle *handle;
+ enum changelog_rec_type cl_type;
+ enum changelog_rec_flags clf_flags = 0;
+ int rc;
ENTRY;
- rc = mdd_la_get(env, mdd_obj, attr, BYPASS_CAPA);
+ rc = mdd_la_get(env, mdd_obj, attr);
if (rc)
RETURN(rc);
- rc = mdd_xattr_sanity_check(env, mdd_obj, attr);
+ rc = mdd_xattr_sanity_check(env, mdd_obj, attr, name);
if (rc)
RETURN(rc);
+ if (strcmp(name, XATTR_LUSTRE_LOV) == 0 &&
+ (fl == LU_XATTR_MERGE || fl == LU_XATTR_SPLIT)) {
+ struct md_rejig_data *mrd = buf->lb_buf;
+ struct md_object *victim = mrd->mrd_obj;
+
+ if (buf->lb_len != sizeof(*mrd))
+ RETURN(-EINVAL);
+
+ rc = mdd_layout_merge_allowed(env, obj, victim);
+ if (rc)
+ RETURN(rc);
+
+ if (fl == LU_XATTR_MERGE)
+ /* merge layout of victim as a mirror of obj's. */
+ rc = mdd_xattr_merge(env, obj, victim);
+ else
+ rc = mdd_xattr_split(env, obj, mrd);
+ RETURN(rc);
+ }
+
+ if (strcmp(name, XATTR_NAME_LMV) == 0) {
+ rc = mdd_dir_layout_shrink(env, obj, buf);
+ RETURN(rc);
+ }
+
if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0 ||
strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0) {
struct posix_acl *acl;
* ACL. */
acl = posix_acl_from_xattr(&init_user_ns, buf->lb_buf,
buf->lb_len);
+ if (IS_ERR(acl))
+ RETURN(PTR_ERR(acl));
if (acl == NULL) {
rc = mdd_xattr_del(env, obj, name);
RETURN(rc);
mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
if (strcmp(XATTR_NAME_HSM, name) == 0) {
- rc = mdd_hsm_update_locked(env, obj, buf, handle);
+ rc = mdd_hsm_update_locked(env, obj, buf, handle, &clf_flags);
if (rc) {
mdd_write_unlock(env, mdd_obj);
GOTO(stop, rc);
}
}
- rc = mdo_xattr_set(env, mdd_obj, buf, name, fl, handle,
- mdd_object_capa(env, mdd_obj));
+ rc = mdo_xattr_set(env, mdd_obj, buf, name, fl, handle);
mdd_write_unlock(env, mdd_obj);
if (rc)
GOTO(stop, rc);
- if (strcmp(XATTR_NAME_LOV, name) == 0)
- rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, mdd_obj,
- handle);
- else if (strncmp(XATTR_USER_PREFIX, name,
- sizeof(XATTR_USER_PREFIX) - 1) == 0 ||
- strncmp(POSIX_ACL_XATTR_ACCESS, name,
- sizeof(POSIX_ACL_XATTR_ACCESS) - 1) == 0 ||
- strncmp(POSIX_ACL_XATTR_DEFAULT, name,
- sizeof(POSIX_ACL_XATTR_DEFAULT) - 1) == 0)
- rc = mdd_changelog_data_store(env, mdd, CL_XATTR, 0, mdd_obj,
- handle);
+ cl_type = mdd_xattr_changelog_type(env, mdd, name);
+ if (cl_type < 0)
+ GOTO(stop, rc = 0);
-stop:
- mdd_trans_stop(env, mdd, rc, handle);
+ rc = mdd_changelog_data_store_xattr(env, mdd, cl_type, clf_flags,
+ mdd_obj, name, handle);
- RETURN(rc);
+ EXIT;
+stop:
+ return mdd_trans_stop(env, mdd, rc, handle);
}
static int mdd_declare_xattr_del(const struct lu_env *env,
const char *name,
struct thandle *handle)
{
+ enum changelog_rec_type type;
int rc;
rc = mdo_declare_xattr_del(env, obj, name, handle);
if (rc)
return rc;
- /* Only record user xattr changes */
- if ((strncmp(XATTR_USER_PREFIX, name,
- sizeof(XATTR_USER_PREFIX) - 1) == 0))
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
+ type = mdd_xattr_changelog_type(env, mdd, name);
+ if (type < 0)
+ return 0; /* no changelog to store */
- return rc;
+ return mdd_declare_changelog_store(env, mdd, type, NULL, NULL, handle);
}
/**
struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
struct mdd_device *mdd = mdo2mdd(obj);
struct thandle *handle;
- int rc;
+ int rc;
ENTRY;
- rc = mdd_la_get(env, mdd_obj, attr, BYPASS_CAPA);
+ rc = mdd_la_get(env, mdd_obj, attr);
if (rc)
RETURN(rc);
- rc = mdd_xattr_sanity_check(env, mdd_obj, attr);
+ rc = mdd_xattr_sanity_check(env, mdd_obj, attr, name);
if (rc)
RETURN(rc);
- handle = mdd_trans_create(env, mdd);
- if (IS_ERR(handle))
- RETURN(PTR_ERR(handle));
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
- rc = mdd_declare_xattr_del(env, mdd, mdd_obj, name, handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_declare_xattr_del(env, mdd, mdd_obj, name, handle);
+ if (rc)
+ GOTO(stop, rc);
- rc = mdd_trans_start(env, mdd, handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(stop, rc);
- mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = mdo_xattr_del(env, mdd_obj, name, handle,
- mdd_object_capa(env, mdd_obj));
- mdd_write_unlock(env, mdd_obj);
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ rc = mdo_xattr_del(env, mdd_obj, name, handle);
+ mdd_write_unlock(env, mdd_obj);
if (rc)
GOTO(stop, rc);
- /* Only record system & user xattr changes */
- if (strncmp(XATTR_USER_PREFIX, name,
- sizeof(XATTR_USER_PREFIX) - 1) == 0 ||
- strncmp(POSIX_ACL_XATTR_ACCESS, name,
- sizeof(POSIX_ACL_XATTR_ACCESS) - 1) == 0 ||
- strncmp(POSIX_ACL_XATTR_DEFAULT, name,
- sizeof(POSIX_ACL_XATTR_DEFAULT) - 1) == 0)
- rc = mdd_changelog_data_store(env, mdd, CL_XATTR, 0, mdd_obj,
- handle);
+ if (mdd_xattr_changelog_type(env, mdd, name) < 0)
+ GOTO(stop, rc = 0);
-stop:
- mdd_trans_stop(env, mdd, rc, handle);
+ rc = mdd_changelog_data_store_xattr(env, mdd, CL_SETXATTR, 0, mdd_obj,
+ name, handle);
- RETURN(rc);
+ EXIT;
+stop:
+ return mdd_trans_stop(env, mdd, rc, handle);
}
/*
- * read lov EA of an object
- * return the lov EA in an allocated lu_buf
+ * read lov/lmv EA of an object
+ * return the lov/lmv EA in an allocated lu_buf
*/
-int mdd_get_lov_ea(const struct lu_env *env, struct mdd_object *obj,
- struct lu_buf *lmm_buf)
+int mdd_stripe_get(const struct lu_env *env, struct mdd_object *obj,
+ struct lu_buf *lmm_buf, const char *name)
{
- struct lu_buf *buf = &mdd_env_info(env)->mti_big_buf;
- int rc, bufsize;
- ENTRY;
+ struct lu_buf *buf = &mdd_env_info(env)->mti_big_buf;
+ int rc;
-repeat:
- rc = mdo_xattr_get(env, obj, buf, XATTR_NAME_LOV,
- mdd_object_capa(env, obj));
+ ENTRY;
+ if (buf->lb_buf == NULL) {
+ buf = lu_buf_check_and_alloc(buf, 4096);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+ }
+
+repeat:
+ rc = mdo_xattr_get(env, obj, buf, name);
if (rc == -ERANGE) {
/* mti_big_buf is allocated but is too small
* we need to increase it */
buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf,
buf->lb_len * 2);
if (buf->lb_buf == NULL)
- GOTO(out, rc = -ENOMEM);
+ RETURN(-ENOMEM);
goto repeat;
- }
-
- if (rc < 0)
+ } else if (rc < 0) {
RETURN(rc);
-
- if (rc == 0)
+ } else if (rc == 0) {
RETURN(-ENODATA);
-
- bufsize = rc;
- if (memcmp(buf, &LU_BUF_NULL, sizeof(*buf)) == 0) {
- /* mti_big_buf was not allocated, so we have to
- * allocate it based on the ea size */
- buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf,
- bufsize);
- if (buf->lb_buf == NULL)
- GOTO(out, rc = -ENOMEM);
- goto repeat;
}
- lu_buf_alloc(lmm_buf, bufsize);
+ lu_buf_alloc(lmm_buf, rc);
if (lmm_buf->lb_buf == NULL)
- GOTO(out, rc = -ENOMEM);
+ RETURN(-ENOMEM);
- memcpy(lmm_buf->lb_buf, buf->lb_buf, bufsize);
- rc = 0;
- EXIT;
+ /*
+ * we don't use lmm_buf directly, because we don't know xattr size, so
+ * by using mti_big_buf we can avoid calling mdo_xattr_get() twice.
+ */
+ memcpy(lmm_buf->lb_buf, buf->lb_buf, rc);
-out:
- if (rc < 0)
- lu_buf_free(lmm_buf);
- return rc;
+ RETURN(0);
}
static int mdd_xattr_hsm_replace(const struct lu_env *env,
struct thandle *handle)
{
struct hsm_attrs *attrs;
- __u32 hsm_flags;
- int flags = 0;
+ enum hsm_states hsm_flags;
+ enum changelog_rec_flags clf_flags = 0;
int rc;
ENTRY;
rc = mdo_xattr_set(env, o, buf, XATTR_NAME_HSM, LU_XATTR_REPLACE,
- handle, mdd_object_capa(env, o));
+ handle);
if (rc != 0)
RETURN(rc);
RETURN(0);
/* Add a changelog record for release. */
- hsm_set_cl_event(&flags, HE_RELEASE);
+ hsm_set_cl_event(&clf_flags, HE_RELEASE);
rc = mdd_changelog_data_store(env, mdo2mdd(&o->mod_obj), CL_HSM,
- flags, o, handle);
+ clf_flags, o, handle);
RETURN(rc);
}
* the rules are:
* - only normal FIDs or non-system IGIFs
* - same type of objects
- * - same owner/group (so quotas are still valid)
+ * - same owner/group (so quotas are still valid) unless this is from HSM
+ * release.
*/
static int mdd_layout_swap_allowed(const struct lu_env *env,
struct mdd_object *o1,
const struct lu_attr *attr1,
struct mdd_object *o2,
- const struct lu_attr *attr2)
+ const struct lu_attr *attr2,
+ __u64 flags)
{
const struct lu_fid *fid1, *fid2;
ENTRY;
RETURN(-EBADF);
}
+ if (flags & SWAP_LAYOUTS_MDS_HSM)
+ RETURN(0);
+
if ((attr1->la_uid != attr2->la_uid) ||
(attr1->la_gid != attr2->la_gid))
RETURN(-EPERM);
RETURN(0);
}
+/* XXX To set the proper lmm_oi & lmm_layout_gen when swap layouts, we have to
+ * look into the layout in MDD layer. */
+static int mdd_lmm_oi(struct lov_mds_md *lmm, struct ost_id *oi, bool get)
+{
+ struct lov_comp_md_v1 *comp_v1;
+ struct lov_mds_md *v1;
+ int i, ent_count;
+ __u32 off;
+
+ if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1) {
+ comp_v1 = (struct lov_comp_md_v1 *)lmm;
+ ent_count = le16_to_cpu(comp_v1->lcm_entry_count);
+
+ if (ent_count == 0)
+ return -EINVAL;
+
+ if (get) {
+ off = le32_to_cpu(comp_v1->lcm_entries[0].lcme_offset);
+ v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
+ *oi = v1->lmm_oi;
+ } else {
+ for (i = 0; i < le32_to_cpu(ent_count); i++) {
+ off = le32_to_cpu(comp_v1->lcm_entries[i].
+ lcme_offset);
+ v1 = (struct lov_mds_md *)((char *)comp_v1 +
+ off);
+ v1->lmm_oi = *oi;
+ }
+ }
+ } else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
+ le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3) {
+ if (get)
+ *oi = lmm->lmm_oi;
+ else
+ lmm->lmm_oi = *oi;
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static inline int mdd_get_lmm_oi(struct lov_mds_md *lmm, struct ost_id *oi)
+{
+ return mdd_lmm_oi(lmm, oi, true);
+}
+
+static inline int mdd_set_lmm_oi(struct lov_mds_md *lmm, struct ost_id *oi)
+{
+ return mdd_lmm_oi(lmm, oi, false);
+}
+
+static int mdd_lmm_gen(struct lov_mds_md *lmm, __u32 *gen, bool get)
+{
+ struct lov_comp_md_v1 *comp_v1;
+
+ if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1) {
+ comp_v1 = (struct lov_comp_md_v1 *)lmm;
+ if (get)
+ *gen = le32_to_cpu(comp_v1->lcm_layout_gen);
+ else
+ comp_v1->lcm_layout_gen = cpu_to_le32(*gen);
+ } else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
+ le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3) {
+ __u16 tmp_gen = *gen;
+ if (get)
+ *gen = le16_to_cpu(lmm->lmm_layout_gen);
+ else
+ lmm->lmm_layout_gen = cpu_to_le16(tmp_gen);
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static inline int mdd_get_lmm_gen(struct lov_mds_md *lmm, __u32 *gen)
+{
+ return mdd_lmm_gen(lmm, gen, true);
+}
+
+static inline int mdd_set_lmm_gen(struct lov_mds_md *lmm, __u32 *gen)
+{
+ return mdd_lmm_gen(lmm, gen, false);
+}
+
+static int mdd_dom_data_truncate(const struct lu_env *env,
+ struct mdd_device *mdd, struct mdd_object *mo)
+{
+ struct thandle *th;
+ struct dt_object *dom;
+ int rc;
+
+ dom = dt_object_locate(mdd_object_child(mo), mdd->mdd_bottom);
+ if (!dom)
+ GOTO(out, rc = -ENODATA);
+
+ th = dt_trans_create(env, mdd->mdd_bottom);
+ if (IS_ERR(th))
+ GOTO(out, rc = PTR_ERR(th));
+
+ rc = dt_declare_punch(env, dom, 0, OBD_OBJECT_EOF, th);
+ if (rc)
+ GOTO(stop, rc);
+
+ rc = dt_trans_start_local(env, mdd->mdd_bottom, th);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = dt_punch(env, dom, 0, OBD_OBJECT_EOF, th);
+stop:
+ dt_trans_stop(env, mdd->mdd_bottom, th);
+out:
+ /* Ignore failure but report the error */
+ if (rc)
+ CERROR("%s: "DFID" can't truncate DOM inode data, rc = %d\n",
+ mdd_obj_dev_name(mo), PFID(mdo2fid(mo)), rc);
+ return rc;
+}
+
/**
* swap layouts between 2 lustre objects
*/
static int mdd_swap_layouts(const struct lu_env *env, struct md_object *obj1,
struct md_object *obj2, __u64 flags)
{
- struct mdd_thread_info *info = mdd_env_info(env);
- struct mdd_object *fst_o = md2mdd_obj(obj1);
- struct mdd_object *snd_o = md2mdd_obj(obj2);
- struct lu_attr *fst_la = MDD_ENV_VAR(env, cattr);
- struct lu_attr *snd_la = MDD_ENV_VAR(env, tattr);
- struct mdd_device *mdd = mdo2mdd(obj1);
- struct lov_mds_md *fst_lmm, *snd_lmm;
- struct lu_buf *fst_buf = &info->mti_buf[0];
- struct lu_buf *snd_buf = &info->mti_buf[1];
- struct lu_buf *fst_hsm_buf = &info->mti_buf[2];
- struct lu_buf *snd_hsm_buf = &info->mti_buf[3];
- struct ost_id *saved_oi = NULL;
- struct thandle *handle;
- __u16 fst_gen, snd_gen;
- int fst_fl;
- int rc;
- int rc2;
+ struct mdd_thread_info *info = mdd_env_info(env);
+ struct mdd_object *fst_o = md2mdd_obj(obj1);
+ struct mdd_object *snd_o = md2mdd_obj(obj2);
+ struct lu_attr *fst_la = MDD_ENV_VAR(env, cattr);
+ struct lu_attr *snd_la = MDD_ENV_VAR(env, tattr);
+ struct mdd_device *mdd = mdo2mdd(obj1);
+ struct lov_mds_md *fst_lmm, *snd_lmm;
+ struct lu_buf *fst_buf = &info->mti_buf[0];
+ struct lu_buf *snd_buf = &info->mti_buf[1];
+ struct lu_buf *fst_hsm_buf = &info->mti_buf[2];
+ struct lu_buf *snd_hsm_buf = &info->mti_buf[3];
+ struct ost_id *saved_oi = NULL;
+ struct thandle *handle;
+ struct mdd_object *dom_o = NULL;
+ __u64 domsize_dom, domsize_vlt;
+ __u32 fst_gen, snd_gen, saved_gen;
+ int fst_fl;
+ int rc, rc2;
+
ENTRY;
CLASSERT(ARRAY_SIZE(info->mti_buf) >= 4);
if (rc < 0)
swap(fst_o, snd_o);
- rc = mdd_la_get(env, fst_o, fst_la, BYPASS_CAPA);
+ rc = mdd_la_get(env, fst_o, fst_la);
if (rc != 0)
RETURN(rc);
- rc = mdd_la_get(env, snd_o, snd_la, BYPASS_CAPA);
+ rc = mdd_la_get(env, snd_o, snd_la);
if (rc != 0)
RETURN(rc);
/* check if layout swapping is allowed */
- rc = mdd_layout_swap_allowed(env, fst_o, fst_la, snd_o, snd_la);
+ rc = mdd_layout_swap_allowed(env, fst_o, fst_la, snd_o, snd_la, flags);
if (rc != 0)
RETURN(rc);
mdd_write_lock(env, fst_o, MOR_TGT_CHILD);
mdd_write_lock(env, snd_o, MOR_TGT_CHILD);
- rc = mdd_get_lov_ea(env, fst_o, fst_buf);
+ rc = mdd_stripe_get(env, fst_o, fst_buf, XATTR_NAME_LOV);
if (rc < 0 && rc != -ENODATA)
GOTO(stop, rc);
- rc = mdd_get_lov_ea(env, snd_o, snd_buf);
+ rc = mdd_stripe_get(env, snd_o, snd_buf, XATTR_NAME_LOV);
if (rc < 0 && rc != -ENODATA)
GOTO(stop, rc);
+ /* check if file has DoM. DoM file can be migrated only to another
+ * DoM layout with the same DoM component size or to an non-DOM
+ * layout. After migration to OSTs layout, local MDT inode data
+ * should be truncated.
+ * Objects are sorted by FIDs, considering that original file's FID
+ * is always smaller the snd_o is always original file we are migrating
+ * from.
+ */
+ domsize_dom = mdd_lmm_dom_size(snd_buf->lb_buf);
+ domsize_vlt = mdd_lmm_dom_size(fst_buf->lb_buf);
+
+ /* Only migration is supported for DoM files, not 'swap_layouts' so
+ * target file must be volatile and orphan.
+ */
+ if (fst_o->mod_flags & (ORPHAN_OBJ | VOLATILE_OBJ)) {
+ dom_o = domsize_dom ? snd_o : NULL;
+ } else if (snd_o->mod_flags & (ORPHAN_OBJ | VOLATILE_OBJ)) {
+ swap(domsize_dom, domsize_vlt);
+ dom_o = domsize_dom ? fst_o : NULL;
+ } else if (domsize_dom > 0 || domsize_vlt > 0) {
+ /* 'lfs swap_layouts' case, neither file should have DoM */
+ rc = -EOPNOTSUPP;
+ CDEBUG(D_LAYOUT, "cannot swap layouts with DOM component, "
+ "use migration instead: rc = %d\n", rc);
+ GOTO(stop, rc);
+ }
+
+ if (domsize_vlt > 0 && domsize_dom == 0) {
+ rc = -EOPNOTSUPP;
+ CDEBUG(D_LAYOUT, "cannot swap layout for "DFID": OST to DOM "
+ "migration is not supported: rc = %d\n",
+ PFID(mdo2fid(snd_o)), rc);
+ GOTO(stop, rc);
+ } else if (domsize_vlt > 0 && domsize_dom != domsize_vlt) {
+ rc = -EOPNOTSUPP;
+ CDEBUG(D_LAYOUT, "cannot swap layout for "DFID": new layout "
+ "must have the same DoM component size: rc = %d\n",
+ PFID(mdo2fid(fst_o)), rc);
+ GOTO(stop, rc);
+ } else if (domsize_vlt > 0) {
+ /* Migration with the same DOM component size, no need to
+ * truncate local data, it is still being used */
+ dom_o = NULL;
+ }
+
/* swapping 2 non existant layouts is a success */
if (fst_buf->lb_buf == NULL && snd_buf->lb_buf == NULL)
GOTO(stop, rc = 0);
swap(fst_buf, snd_buf);
}
+ fst_gen = snd_gen = 0;
/* lmm and generation layout initialization */
if (fst_buf->lb_buf != NULL) {
fst_lmm = fst_buf->lb_buf;
- fst_gen = le16_to_cpu(fst_lmm->lmm_layout_gen);
+ mdd_get_lmm_gen(fst_lmm, &fst_gen);
fst_fl = LU_XATTR_REPLACE;
} else {
fst_lmm = NULL;
fst_fl = LU_XATTR_CREATE;
}
- snd_lmm = snd_buf->lb_buf;
- snd_gen = le16_to_cpu(snd_lmm->lmm_layout_gen);
+ snd_lmm = snd_buf->lb_buf;
+ mdd_get_lmm_gen(snd_lmm, &snd_gen);
+
+ saved_gen = fst_gen;
+ /* increase the generation layout numbers */
+ snd_gen++;
+ fst_gen++;
+
+ /*
+ * XXX The layout generation is used to generate component IDs for
+ * the composite file, we have to do some special tweaks to make
+ * sure the layout generation is always adequate for that job.
+ */
+
+ /* Skip invalid generation number for composite layout */
+ if ((snd_gen & LCME_ID_MASK) == 0)
+ snd_gen++;
+ if ((fst_gen & LCME_ID_MASK) == 0)
+ fst_gen++;
+ /* Make sure the generation is greater than all the component IDs */
+ if (fst_gen < snd_gen)
+ fst_gen = snd_gen;
+ else if (fst_gen > snd_gen)
+ snd_gen = fst_gen;
+
+ /* set the file specific informations in lmm */
+ if (fst_lmm != NULL) {
+ saved_oi = &info->mti_oa.o_oi;
+ mdd_get_lmm_oi(fst_lmm, saved_oi);
+ mdd_set_lmm_gen(fst_lmm, &snd_gen);
+ mdd_set_lmm_oi(fst_lmm, &snd_lmm->lmm_oi);
+ mdd_set_lmm_oi(snd_lmm, saved_oi);
+ } else {
+ if ((snd_lmm->lmm_magic & cpu_to_le32(LOV_MAGIC_MASK)) ==
+ cpu_to_le32(LOV_MAGIC_MAGIC))
+ snd_lmm->lmm_magic |= cpu_to_le32(LOV_MAGIC_DEFINED);
+ else
+ GOTO(stop, rc = -EPROTO);
+ }
+ mdd_set_lmm_gen(snd_lmm, &fst_gen);
+
+ /* Prepare HSM attribute if it's required */
+ if (flags & SWAP_LAYOUTS_MDS_HSM) {
+ const int buflen = sizeof(struct hsm_attrs);
+
+ lu_buf_alloc(fst_hsm_buf, buflen);
+ lu_buf_alloc(snd_hsm_buf, buflen);
+ if (fst_hsm_buf->lb_buf == NULL || snd_hsm_buf->lb_buf == NULL)
+ GOTO(stop, rc = -ENOMEM);
+
+ /* Read HSM attribute */
+ rc = mdo_xattr_get(env, fst_o, fst_hsm_buf, XATTR_NAME_HSM);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ rc = mdo_xattr_get(env, snd_o, snd_hsm_buf, XATTR_NAME_HSM);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ rc = mdd_declare_xattr_set(env, mdd, fst_o, snd_hsm_buf,
+ XATTR_NAME_HSM, LU_XATTR_REPLACE,
+ handle);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ rc = mdd_declare_xattr_set(env, mdd, snd_o, fst_hsm_buf,
+ XATTR_NAME_HSM, LU_XATTR_REPLACE,
+ handle);
+ if (rc < 0)
+ GOTO(stop, rc);
+ }
+
+ /* prepare transaction */
+ rc = mdd_declare_xattr_set(env, mdd, fst_o, snd_buf, XATTR_NAME_LOV,
+ fst_fl, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ if (fst_buf->lb_buf != NULL)
+ rc = mdd_declare_xattr_set(env, mdd, snd_o, fst_buf,
+ XATTR_NAME_LOV, LU_XATTR_REPLACE,
+ handle);
+ else
+ rc = mdd_declare_xattr_del(env, mdd, snd_o, XATTR_NAME_LOV,
+ handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ if (flags & SWAP_LAYOUTS_MDS_HSM) {
+ rc = mdd_xattr_hsm_replace(env, fst_o, snd_hsm_buf, handle);
+ if (rc < 0)
+ GOTO(stop, rc);
+
+ rc = mdd_xattr_hsm_replace(env, snd_o, fst_hsm_buf, handle);
+ if (rc < 0) {
+ rc2 = mdd_xattr_hsm_replace(env, fst_o, fst_hsm_buf,
+ handle);
+ if (rc2 < 0)
+ CERROR("%s: restore "DFID" HSM error: %d/%d\n",
+ mdd_obj_dev_name(fst_o),
+ PFID(mdo2fid(fst_o)), rc, rc2);
+ GOTO(stop, rc);
+ }
+ }
+
+ rc = mdo_xattr_set(env, fst_o, snd_buf, XATTR_NAME_LOV, fst_fl, handle);
+ if (rc != 0)
+ GOTO(stop, rc);
+
+ if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_MDS_HSM_SWAP_LAYOUTS))) {
+ rc = -EOPNOTSUPP;
+ } else {
+ if (fst_buf->lb_buf != NULL)
+ rc = mdo_xattr_set(env, snd_o, fst_buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle);
+ else
+ rc = mdo_xattr_del(env, snd_o, XATTR_NAME_LOV, handle);
+ }
+ if (rc != 0)
+ GOTO(out_restore, rc);
+
+ /* Issue one changelog record per file */
+ rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, fst_o, handle);
+ if (rc)
+ GOTO(stop, rc);
+
+ rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, snd_o, handle);
+ if (rc)
+ GOTO(stop, rc);
+ EXIT;
+
+out_restore:
+ if (rc != 0) {
+ int steps = 0;
+
+ /* failure on second file, but first was done, so we have
+ * to roll back first. */
+ if (fst_buf->lb_buf != NULL) {
+ mdd_set_lmm_oi(fst_lmm, saved_oi);
+ mdd_set_lmm_gen(fst_lmm, &saved_gen);
+ rc2 = mdo_xattr_set(env, fst_o, fst_buf, XATTR_NAME_LOV,
+ LU_XATTR_REPLACE, handle);
+ } else {
+ rc2 = mdo_xattr_del(env, fst_o, XATTR_NAME_LOV, handle);
+ }
+ if (rc2 < 0)
+ goto do_lbug;
+
+ ++steps;
+ rc2 = mdd_xattr_hsm_replace(env, fst_o, fst_hsm_buf, handle);
+ if (rc2 < 0)
+ goto do_lbug;
+
+ ++steps;
+ rc2 = mdd_xattr_hsm_replace(env, snd_o, snd_hsm_buf, handle);
+
+ do_lbug:
+ if (rc2 < 0) {
+ /* very bad day */
+ CERROR("%s: unable to roll back layout swap. FIDs: "
+ DFID" and "DFID "error: %d/%d, steps: %d\n",
+ mdd_obj_dev_name(fst_o),
+ PFID(mdo2fid(snd_o)), PFID(mdo2fid(fst_o)),
+ rc, rc2, steps);
+ /* a solution to avoid journal commit is to panic,
+ * but it has strong consequences so we use LBUG to
+ * allow sysdamin to choose to panic or not
+ */
+ LBUG();
+ }
+ }
+
+stop:
+ rc = mdd_trans_stop(env, mdd, rc, handle);
+
+ /* Truncate local DOM data if all went well */
+ if (!rc && dom_o)
+ mdd_dom_data_truncate(env, mdd, dom_o);
+
+ mdd_write_unlock(env, snd_o);
+ mdd_write_unlock(env, fst_o);
+
+ lu_buf_free(fst_buf);
+ lu_buf_free(snd_buf);
+ lu_buf_free(fst_hsm_buf);
+ lu_buf_free(snd_hsm_buf);
+
+ if (!rc) {
+ (void) mdd_object_pfid_replace(env, fst_o);
+ (void) mdd_object_pfid_replace(env, snd_o);
+ }
+ return rc;
+}
+
+static int mdd_declare_layout_change(const struct lu_env *env,
+ struct mdd_device *mdd,
+ struct mdd_object *obj,
+ struct md_layout_change *mlc,
+ struct thandle *handle)
+{
+ int rc;
+
+ rc = mdo_declare_layout_change(env, obj, mlc, handle);
+ if (rc)
+ return rc;
+
+ return mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, NULL,
+ handle);
+}
+
+/* For PFL, this is used to instantiate necessary component objects. */
+static int
+mdd_layout_instantiate_component(const struct lu_env *env,
+ struct mdd_object *obj, struct md_layout_change *mlc,
+ struct thandle *handle)
+{
+ struct mdd_device *mdd = mdd_obj2mdd_dev(obj);
+ int rc;
+ ENTRY;
+
+ if (mlc->mlc_opc != MD_LAYOUT_WRITE)
+ RETURN(-ENOTSUPP);
+
+ rc = mdd_declare_layout_change(env, mdd, obj, mlc, handle);
+ /**
+ * It's possible that another layout write intent has already
+ * instantiated our objects, so a -EALREADY returned, and we need to
+ * do nothing.
+ */
+ if (rc)
+ RETURN(rc == -EALREADY ? 0 : rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ RETURN(rc);
+
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ rc = mdo_layout_change(env, obj, mlc, handle);
+ mdd_write_unlock(env, obj);
+ if (rc)
+ RETURN(rc);
+
+ rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, obj, handle);
+ RETURN(rc);
+}
+
+/**
+ * Change the FLR layout from RDONLY to WRITE_PENDING.
+ *
+ * It picks the primary mirror, and bumps the layout version, and set
+ * layout version xattr to OST objects in a sync tx. In order to facilitate
+ * the handling of phantom writers from evicted clients, the clients carry
+ * layout version of the file with write RPC, so that the OSTs can verify
+ * if the write RPCs are legitimate, meaning not from evicted clients.
+ */
+static int
+mdd_layout_update_rdonly(const struct lu_env *env, struct mdd_object *obj,
+ struct md_layout_change *mlc, struct thandle *handle)
+{
+ struct mdd_device *mdd = mdd_obj2mdd_dev(obj);
+ struct lu_buf *som_buf = &mdd_env_info(env)->mti_buf[1];
+ struct lustre_som_attrs *som = &mlc->mlc_som;
+ int fl = 0;
+ int rc;
+ ENTRY;
+
+ /* Verify acceptable operations */
+ switch (mlc->mlc_opc) {
+ case MD_LAYOUT_WRITE:
+ case MD_LAYOUT_RESYNC:
+ /* these are legal operations - this represents the case that
+ * a few mirrors were missed in the last resync. */
+ break;
+ case MD_LAYOUT_RESYNC_DONE:
+ default:
+ RETURN(0);
+ }
+
+ som_buf->lb_buf = som;
+ som_buf->lb_len = sizeof(*som);
+ rc = mdo_xattr_get(env, obj, som_buf, XATTR_NAME_SOM);
+ if (rc < 0 && rc != -ENODATA)
+ RETURN(rc);
+
+ if (rc > 0) {
+ lustre_som_swab(som);
+ if (som->lsa_valid & SOM_FL_STRICT)
+ fl = LU_XATTR_REPLACE;
+ }
+
+ rc = mdd_declare_layout_change(env, mdd, obj, mlc, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ if (fl) {
+ rc = mdd_declare_xattr_set(env, mdd, obj, som_buf,
+ XATTR_NAME_SOM, fl, handle);
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ /* record a changelog for data mover to consume */
+ rc = mdd_declare_changelog_store(env, mdd, CL_FLRW, NULL, NULL, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ /* it needs a sync tx to make FLR to work properly */
+ handle->th_sync = 1;
+
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ rc = mdo_layout_change(env, obj, mlc, handle);
+ if (!rc && fl) {
+ /* SOM state transition from STRICT to STALE */
+ som->lsa_valid = SOM_FL_STALE;
+ lustre_som_swab(som);
+ rc = mdo_xattr_set(env, obj, som_buf, XATTR_NAME_SOM,
+ fl, handle);
+ }
+ mdd_write_unlock(env, obj);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdd_changelog_data_store(env, mdd, CL_FLRW, 0, obj, handle);
+ if (rc)
+ GOTO(out, rc);
+
+ EXIT;
+
+out:
+ return rc;
+}
+
+/**
+ * Handle mirrored file state transition when it's in WRITE_PENDING.
+ *
+ * Only MD_LAYOUT_RESYNC, which represents start of resync, is allowed when
+ * the file is in WRITE_PENDING state. If everything goes fine, the file's
+ * layout version will be increased, and the file's state will be changed to
+ * SYNC_PENDING.
+ */
+static int
+mdd_layout_update_write_pending(const struct lu_env *env,
+ struct mdd_object *obj, struct md_layout_change *mlc,
+ struct thandle *handle)
+{
+ struct mdd_device *mdd = mdd_obj2mdd_dev(obj);
+ int rc;
+ ENTRY;
+
+ switch (mlc->mlc_opc) {
+ case MD_LAYOUT_RESYNC:
+ /* Upon receiving the resync request, it should
+ * instantiate all stale components right away to get ready
+ * for mirror copy. In order to avoid layout version change,
+ * client should avoid sending LAYOUT_WRITE request at the
+ * resync state. */
+ break;
+ case MD_LAYOUT_WRITE:
+ /* legal race for concurrent write, the file state has been
+ * changed by another client. */
+ break;
+ default:
+ RETURN(-EBUSY);
+ }
+
+ rc = mdd_declare_layout_change(env, mdd, obj, mlc, handle);
+ if (rc)
+ GOTO(out, rc);
- /* increase the generation layout numbers */
- snd_gen++;
- fst_gen++;
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(out, rc);
- /* set the file specific informations in lmm */
- if (fst_lmm != NULL) {
- saved_oi = &info->mti_oa.o_oi;
+ /* it needs a sync tx to make FLR to work properly */
+ handle->th_sync = 1;
- *saved_oi = fst_lmm->lmm_oi;
- fst_lmm->lmm_layout_gen = cpu_to_le16(snd_gen);
- fst_lmm->lmm_oi = snd_lmm->lmm_oi;
- snd_lmm->lmm_oi = *saved_oi;
- } else {
- if (snd_lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1))
- snd_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
- else if (snd_lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3))
- snd_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V3_DEF);
- else
- GOTO(stop, rc = -EPROTO);
- }
- snd_lmm->lmm_layout_gen = cpu_to_le16(fst_gen);
+ mdd_write_lock(env, obj, MOR_TGT_CHILD);
+ rc = mdo_layout_change(env, obj, mlc, handle);
+ mdd_write_unlock(env, obj);
+ if (rc)
+ GOTO(out, rc);
- /* Prepare HSM attribute if it's required */
- if (flags & SWAP_LAYOUTS_MDS_HSM) {
- const int buflen = sizeof(struct hsm_attrs);
+ EXIT;
- lu_buf_alloc(fst_hsm_buf, buflen);
- lu_buf_alloc(snd_hsm_buf, buflen);
- if (fst_hsm_buf->lb_buf == NULL || snd_hsm_buf->lb_buf == NULL)
- GOTO(stop, rc = -ENOMEM);
+out:
+ return rc;
+}
- /* Read HSM attribute */
- rc = mdo_xattr_get(env, fst_o, fst_hsm_buf, XATTR_NAME_HSM,
- BYPASS_CAPA);
- if (rc < 0)
- GOTO(stop, rc);
+/**
+ * Handle the requests when a FLR file's state is in SYNC_PENDING.
+ *
+ * Only concurrent write and sync complete requests are possible when the
+ * file is in SYNC_PENDING. For the latter request, it will pass in the
+ * mirrors that have been synchronized, then the stale bit will be cleared
+ * to make the file's state turn into RDONLY.
+ * For concurrent write reqeust, it just needs to change the file's state
+ * to WRITE_PENDING in a sync tx. It doesn't have to change the layout
+ * version because the version will be increased in the transition to
+ * SYNC_PENDING later so that it can deny the write request from potential
+ * evicted SYNC clients. */
+static int
+mdd_object_update_sync_pending(const struct lu_env *env, struct mdd_object *obj,
+ struct md_layout_change *mlc, struct thandle *handle)
+{
+ struct mdd_device *mdd = mdd_obj2mdd_dev(obj);
+ struct lu_buf *som_buf = &mdd_env_info(env)->mti_buf[1];
+ int fl = 0;
+ int rc;
+ ENTRY;
- rc = mdo_xattr_get(env, snd_o, snd_hsm_buf, XATTR_NAME_HSM,
- BYPASS_CAPA);
- if (rc < 0)
- GOTO(stop, rc);
+ /* operation validation */
+ switch (mlc->mlc_opc) {
+ case MD_LAYOUT_RESYNC_DONE:
+ /* resync complete. */
+ case MD_LAYOUT_WRITE:
+ /* concurrent write. */
+ break;
+ case MD_LAYOUT_RESYNC:
+ /* resync again, most likely the previous run failed.
+ * no-op if it's already in SYNC_PENDING state */
+ RETURN(0);
+ default:
+ RETURN(-EBUSY);
+ }
- rc = mdd_declare_xattr_set(env, mdd, fst_o, snd_hsm_buf,
- XATTR_NAME_HSM, LU_XATTR_REPLACE,
- handle);
- if (rc < 0)
- GOTO(stop, rc);
+ if (mlc->mlc_som.lsa_valid & SOM_FL_STRICT) {
+ rc = mdo_xattr_get(env, obj, &LU_BUF_NULL, XATTR_NAME_SOM);
+ if (rc < 0 && rc != -ENODATA)
+ RETURN(rc);
- rc = mdd_declare_xattr_set(env, mdd, snd_o, fst_hsm_buf,
- XATTR_NAME_HSM, LU_XATTR_REPLACE,
- handle);
- if (rc < 0)
- GOTO(stop, rc);
+ fl = rc == -ENODATA ? LU_XATTR_CREATE : LU_XATTR_REPLACE;
+ lustre_som_swab(&mlc->mlc_som);
+ som_buf->lb_buf = &mlc->mlc_som;
+ som_buf->lb_len = sizeof(mlc->mlc_som);
}
- /* prepare transaction */
- rc = mdd_declare_xattr_set(env, mdd, fst_o, snd_buf, XATTR_NAME_LOV,
- fst_fl, handle);
- if (rc != 0)
- GOTO(stop, rc);
+ rc = mdd_declare_layout_change(env, mdd, obj, mlc, handle);
+ if (rc)
+ GOTO(out, rc);
- if (fst_buf->lb_buf != NULL)
- rc = mdd_declare_xattr_set(env, mdd, snd_o, fst_buf,
- XATTR_NAME_LOV, LU_XATTR_REPLACE,
- handle);
- else
- rc = mdd_declare_xattr_del(env, mdd, snd_o, XATTR_NAME_LOV,
- handle);
- if (rc != 0)
- GOTO(stop, rc);
+ /* record a changelog for the completion of resync */
+ rc = mdd_declare_changelog_store(env, mdd, CL_RESYNC, NULL, NULL,
+ handle);
+ if (rc)
+ GOTO(out, rc);
- rc = mdd_trans_start(env, mdd, handle);
- if (rc != 0)
- GOTO(stop, rc);
+ /* RESYNC_DONE has piggybacked size and blocks */
+ if (fl) {
+ rc = mdd_declare_xattr_set(env, mdd, obj, som_buf,
+ XATTR_NAME_SOM, fl, handle);
+ if (rc)
+ GOTO(out, rc);
+ }
- if (flags & SWAP_LAYOUTS_MDS_HSM) {
- rc = mdd_xattr_hsm_replace(env, fst_o, snd_hsm_buf, handle);
- if (rc < 0)
- GOTO(stop, rc);
+ rc = mdd_trans_start(env, mdd, handle);
+ if (rc)
+ GOTO(out, rc);
- rc = mdd_xattr_hsm_replace(env, snd_o, fst_hsm_buf, handle);
- if (rc < 0) {
- rc2 = mdd_xattr_hsm_replace(env, fst_o, fst_hsm_buf,
- handle);
- if (rc2 < 0)
- CERROR("%s: restore "DFID" HSM error: %d/%d\n",
- mdd_obj_dev_name(fst_o),
- PFID(mdo2fid(fst_o)), rc, rc2);
- GOTO(stop, rc);
- }
- }
+ /* it needs a sync tx to make FLR to work properly */
+ handle->th_sync = 1;
- rc = mdo_xattr_set(env, fst_o, snd_buf, XATTR_NAME_LOV, fst_fl, handle,
- mdd_object_capa(env, fst_o));
- if (rc != 0)
- GOTO(stop, rc);
+ rc = mdo_layout_change(env, obj, mlc, handle);
+ if (rc)
+ GOTO(out, rc);
- if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_MDS_HSM_SWAP_LAYOUTS))) {
- rc = -EOPNOTSUPP;
- } else {
- if (fst_buf->lb_buf != NULL)
- rc = mdo_xattr_set(env, snd_o, fst_buf, XATTR_NAME_LOV,
- LU_XATTR_REPLACE, handle,
- mdd_object_capa(env, snd_o));
- else
- rc = mdo_xattr_del(env, snd_o, XATTR_NAME_LOV, handle,
- mdd_object_capa(env, snd_o));
+ if (fl) {
+ rc = mdo_xattr_set(env, obj, som_buf, XATTR_NAME_SOM,
+ fl, handle);
+ if (rc)
+ GOTO(out, rc);
}
- if (rc != 0) {
- int steps = 0;
+ rc = mdd_changelog_data_store(env, mdd, CL_RESYNC, 0, obj, handle);
+ if (rc)
+ GOTO(out, rc);
+ EXIT;
+out:
+ return rc;
+}
- /* failure on second file, but first was done, so we have
- * to roll back first. */
- if (fst_buf->lb_buf != NULL) {
- fst_lmm->lmm_oi = *saved_oi;
- fst_lmm->lmm_layout_gen = cpu_to_le16(fst_gen - 1);
- rc2 = mdo_xattr_set(env, fst_o, fst_buf, XATTR_NAME_LOV,
- LU_XATTR_REPLACE, handle,
- mdd_object_capa(env, fst_o));
- } else {
- rc2 = mdo_xattr_del(env, fst_o, XATTR_NAME_LOV, handle,
- mdd_object_capa(env, fst_o));
- }
- if (rc2 < 0)
- goto do_lbug;
+/**
+ * Layout change callback for object.
+ *
+ * This is only used by FLR for now. In the future, it can be exteneded to
+ * handle all layout change.
+ */
+static int
+mdd_layout_change(const struct lu_env *env, struct md_object *o,
+ struct md_layout_change *mlc)
+{
+ struct mdd_object *obj = md2mdd_obj(o);
+ struct mdd_device *mdd = mdd_obj2mdd_dev(obj);
+ struct lu_buf *buf = mdd_buf_get(env, NULL, 0);
+ struct lov_comp_md_v1 *lcm;
+ struct thandle *handle;
+ int flr_state;
+ int rc;
+ ENTRY;
- ++steps;
- rc2 = mdd_xattr_hsm_replace(env, fst_o, fst_hsm_buf, handle);
- if (rc2 < 0)
- goto do_lbug;
+ /* Verify acceptable operations */
+ switch (mlc->mlc_opc) {
+ case MD_LAYOUT_WRITE:
+ case MD_LAYOUT_RESYNC:
+ case MD_LAYOUT_RESYNC_DONE:
+ break;
+ default:
+ RETURN(-ENOTSUPP);
+ }
- ++steps;
- rc2 = mdd_xattr_hsm_replace(env, snd_o, snd_hsm_buf, handle);
+ handle = mdd_trans_create(env, mdd);
+ if (IS_ERR(handle))
+ RETURN(PTR_ERR(handle));
- do_lbug:
- if (rc2 < 0) {
- /* very bad day */
- CERROR("%s: unable to roll back layout swap. FIDs: "
- DFID" and "DFID "error: %d/%d, steps: %d\n",
- mdd_obj_dev_name(fst_o),
- PFID(mdo2fid(snd_o)), PFID(mdo2fid(fst_o)),
- rc, rc2, steps);
- /* a solution to avoid journal commit is to panic,
- * but it has strong consequences so we use LBUG to
- * allow sysdamin to choose to panic or not
- */
- LBUG();
- }
- GOTO(stop, rc);
+ rc = mdd_stripe_get(env, obj, buf, XATTR_NAME_LOV);
+ if (rc < 0) {
+ if (rc == -ENODATA)
+ rc = -EINVAL;
+ GOTO(out, rc);
}
- /* Issue one changelog record per file */
- rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, fst_o, handle);
- if (rc)
- GOTO(stop, rc);
-
- rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, snd_o, handle);
- if (rc)
- GOTO(stop, rc);
+ /* analyze the layout to make sure it's a FLR file */
+ lcm = buf->lb_buf;
+ if (le32_to_cpu(lcm->lcm_magic) != LOV_MAGIC_COMP_V1)
+ GOTO(out, rc = -EINVAL);
+
+ flr_state = le16_to_cpu(lcm->lcm_flags) & LCM_FL_FLR_MASK;
+
+ /* please refer to HLD of FLR for state transition */
+ switch (flr_state) {
+ case LCM_FL_NONE:
+ rc = mdd_layout_instantiate_component(env, obj, mlc, handle);
+ break;
+ case LCM_FL_WRITE_PENDING:
+ rc = mdd_layout_update_write_pending(env, obj, mlc, handle);
+ break;
+ case LCM_FL_RDONLY:
+ rc = mdd_layout_update_rdonly(env, obj, mlc, handle);
+ break;
+ case LCM_FL_SYNC_PENDING:
+ rc = mdd_object_update_sync_pending(env, obj, mlc, handle);
+ break;
+ default:
+ rc = 0;
+ break;
+ }
EXIT;
-stop:
+out:
mdd_trans_stop(env, mdd, rc, handle);
- mdd_write_unlock(env, snd_o);
- mdd_write_unlock(env, fst_o);
-
- lu_buf_free(fst_buf);
- lu_buf_free(snd_buf);
- lu_buf_free(fst_hsm_buf);
- lu_buf_free(snd_hsm_buf);
+ lu_buf_free(buf);
return rc;
}
nc->do_ops->do_ah_init(env, hint, np, nc, attr->la_mode & S_IFMT);
}
-/*
- * do NOT or the MAY_*'s, you'll get the weakest
- */
-int accmode(const struct lu_env *env, const struct lu_attr *la, int flags)
+static int accmode(const struct lu_env *env, const struct lu_attr *la,
+ u64 open_flags)
{
- int res = 0;
-
/* Sadly, NFSD reopens a file repeatedly during operation, so the
* "acc_mode = 0" allowance for newly-created files isn't honoured.
* NFSD uses the MDS_OPEN_OWNEROVERRIDE flag to say that a file
* owner can write to a file even if it is marked readonly to hide
* its brokenness. (bug 5781) */
- if (flags & MDS_OPEN_OWNEROVERRIDE) {
+ if (open_flags & MDS_OPEN_OWNEROVERRIDE) {
struct lu_ucred *uc = lu_ucred_check(env);
if ((uc == NULL) || (la->la_uid == uc->uc_fsuid))
return 0;
}
- if (flags & FMODE_READ)
- res |= MAY_READ;
- if (flags & (FMODE_WRITE | MDS_OPEN_TRUNC | MDS_OPEN_APPEND))
- res |= MAY_WRITE;
- if (flags & MDS_FMODE_EXEC)
- res = MAY_EXEC;
- return res;
+ return mds_accmode(open_flags);
}
static int mdd_open_sanity_check(const struct lu_env *env,
- struct mdd_object *obj,
- const struct lu_attr *attr, int flag)
+ struct mdd_object *obj,
+ const struct lu_attr *attr, u64 open_flags)
{
int mode, rc;
ENTRY;
- /* EEXIST check */
- if (mdd_is_dead_obj(obj))
+ /* EEXIST check, also opening of *open* orphans is allowed so we can
+ * open-by-handle unlinked files
+ */
+ if (mdd_is_dead_obj(obj) &&
+ likely(!(mdd_is_orphan_obj(obj) && obj->mod_count > 0)))
RETURN(-ENOENT);
if (S_ISLNK(attr->la_mode))
RETURN(-ELOOP);
- mode = accmode(env, attr, flag);
+ mode = accmode(env, attr, open_flags);
if (S_ISDIR(attr->la_mode) && (mode & MAY_WRITE))
RETURN(-EISDIR);
- if (!(flag & MDS_OPEN_CREATED)) {
+ if (!(open_flags & MDS_OPEN_CREATED)) {
rc = mdd_permission_internal(env, obj, attr, mode);
if (rc)
RETURN(rc);
if (S_ISFIFO(attr->la_mode) || S_ISSOCK(attr->la_mode) ||
S_ISBLK(attr->la_mode) || S_ISCHR(attr->la_mode))
- flag &= ~MDS_OPEN_TRUNC;
+ open_flags &= ~MDS_OPEN_TRUNC;
/* For writing append-only file must open it with append mode. */
- if (mdd_is_append(obj)) {
- if ((flag & FMODE_WRITE) && !(flag & MDS_OPEN_APPEND))
+ if (attr->la_flags & LUSTRE_APPEND_FL) {
+ if ((open_flags & MDS_FMODE_WRITE) &&
+ !(open_flags & MDS_OPEN_APPEND))
RETURN(-EPERM);
- if (flag & MDS_OPEN_TRUNC)
+ if (open_flags & MDS_OPEN_TRUNC)
RETURN(-EPERM);
}
-#if 0
- /*
- * Now, flag -- O_NOATIME does not be packed by client.
- */
- if (flag & O_NOATIME) {
- struct lu_ucred *uc = lu_ucred(env);
-
- if (uc && ((uc->uc_valid == UCRED_OLD) ||
- (uc->uc_valid == UCRED_NEW)) &&
- (uc->uc_fsuid != attr->la_uid) &&
- !md_capable(uc, CFS_CAP_FOWNER))
- RETURN(-EPERM);
- }
-#endif
-
RETURN(0);
}
static int mdd_open(const struct lu_env *env, struct md_object *obj,
- int flags)
+ u64 open_flags)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
+ struct md_device *md_dev = lu2md_dev(mdd2lu_dev(mdo2mdd(obj)));
struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
+ struct mdd_object_user *mou = NULL;
+ const struct lu_ucred *uc = lu_ucred(env);
+ struct mdd_device *mdd = mdo2mdd(obj);
+ enum changelog_rec_type type = CL_OPEN;
int rc = 0;
mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = mdd_la_get(env, mdd_obj, attr, BYPASS_CAPA);
- if (rc)
- RETURN(rc);
+ rc = mdd_la_get(env, mdd_obj, attr);
+ if (rc != 0)
+ GOTO(out, rc);
- rc = mdd_open_sanity_check(env, mdd_obj, attr, flags);
- if (rc == 0)
+ rc = mdd_open_sanity_check(env, mdd_obj, attr, open_flags);
+ if ((rc == -EACCES) && (mdd->mdd_cl.mc_mask & (1 << CL_DN_OPEN)))
+ type = CL_DN_OPEN;
+ else if (rc != 0)
+ GOTO(out, rc);
+ else
mdd_obj->mod_count++;
+ if (!mdd_changelog_enabled(env, mdd, type))
+ GOTO(out, rc);
+
+find:
+ /* look for existing opener in list under mdd_write_lock */
+ mou = mdd_obj_user_find(mdd_obj, uc->uc_uid, uc->uc_gid, open_flags);
+
+ if (!mou) {
+ int rc2;
+
+ /* add user to list */
+ mou = mdd_obj_user_alloc(open_flags, uc->uc_uid, uc->uc_gid);
+ if (IS_ERR(mou)) {
+ if (rc == 0)
+ rc = PTR_ERR(mou);
+ GOTO(out, rc);
+ }
+ rc2 = mdd_obj_user_add(mdd_obj, mou, type == CL_DN_OPEN);
+ if (rc2 != 0) {
+ mdd_obj_user_free(mou);
+ if (rc2 == -EEXIST)
+ GOTO(find, rc2);
+ }
+ } else {
+ if (type == CL_DN_OPEN) {
+ if (ktime_before(ktime_get(), mou->mou_deniednext))
+ /* same user denied again same access within
+ * time interval: do not record
+ */
+ GOTO(out, rc);
+
+ /* this user already denied, but some time ago:
+ * update denied time
+ */
+ mou->mou_deniednext =
+ ktime_add(ktime_get(),
+ ktime_set(mdd->mdd_cl.mc_deniednext,
+ 0));
+ } else {
+ mou->mou_opencount++;
+ /* same user opening file again with same flags:
+ * don't record
+ */
+ GOTO(out, rc);
+ }
+ }
+
+ /* FYI, only the bottom 32 bits of open_flags are recorded */
+ mdd_changelog(env, type, open_flags, md_dev, mdo2fid(mdd_obj));
+
+ EXIT;
+out:
mdd_write_unlock(env, mdd_obj);
return rc;
}
-static int mdd_declare_close(const struct lu_env *env,
- struct mdd_object *obj,
- struct md_attr *ma,
- struct thandle *handle)
+static int mdd_declare_close(const struct lu_env *env, struct mdd_object *obj,
+ struct md_attr *ma, struct thandle *handle)
{
- int rc;
+ int rc;
- rc = orph_declare_index_delete(env, obj, handle);
- if (rc)
- return rc;
+ rc = mdd_orphan_declare_delete(env, obj, handle);
+ if (rc)
+ return rc;
return mdo_declare_destroy(env, obj, handle);
}
* No permission check is needed.
*/
static int mdd_close(const struct lu_env *env, struct md_object *obj,
- struct md_attr *ma, int mode)
+ struct md_attr *ma, u64 open_flags)
{
- struct mdd_object *mdd_obj = md2mdd_obj(obj);
- struct mdd_device *mdd = mdo2mdd(obj);
- struct thandle *handle = NULL;
- int rc, is_orphan = 0;
- ENTRY;
+ struct mdd_object *mdd_obj = md2mdd_obj(obj);
+ struct mdd_device *mdd = mdo2mdd(obj);
+ struct thandle *handle = NULL;
+ int is_orphan = 0;
+ int rc;
+ bool blocked = false;
+ bool last_close_by_uid = false;
+ const struct lu_ucred *uc = lu_ucred(env);
+ ENTRY;
- if (ma->ma_valid & MA_FLAGS && ma->ma_attr_flags & MDS_KEEP_ORPHAN) {
+ if (ma->ma_valid & MA_FLAGS && ma->ma_attr_flags & MDS_KEEP_ORPHAN) {
mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
mdd_obj->mod_count--;
mdd_write_unlock(env, mdd_obj);
- if (mdd_obj->mod_flags & ORPHAN_OBJ && !mdd_obj->mod_count)
- CDEBUG(D_HA, "Object "DFID" is retained in orphan "
- "list\n", PFID(mdd_object_fid(mdd_obj)));
- RETURN(0);
- }
+ if (mdd_obj->mod_flags & ORPHAN_OBJ && !mdd_obj->mod_count)
+ CDEBUG(D_HA, "Object "DFID" is retained in orphan "
+ "list\n", PFID(mdd_object_fid(mdd_obj)));
+ RETURN(0);
+ }
/* mdd_finish_unlink() will always set orphan object as DEAD_OBJ, but
* it might fail to add the object to orphan list (w/o ORPHAN_OBJ). */
again:
if (is_orphan) {
- handle = mdd_trans_create(env, mdo2mdd(obj));
- if (IS_ERR(handle))
- RETURN(PTR_ERR(handle));
+ /* mdd_trans_create() maybe failed because of barrier_entry(),
+ * under such case, the orphan MDT-object will be left in the
+ * orphan list, and when the MDT remount next time, the unused
+ * orphans will be destroyed automatically.
+ *
+ * One exception: the former mdd_finish_unlink may failed to
+ * add the orphan MDT-object to the orphan list, then if the
+ * mdd_trans_create() failed because of barrier_entry(), the
+ * MDT-object will become real orphan that is neither in the
+ * namespace nor in the orphan list. Such bad case should be
+ * very rare and will be handled by e2fsck/lfsck. */
+ handle = mdd_trans_create(env, mdo2mdd(obj));
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ if (rc != -EINPROGRESS)
+ GOTO(stop, rc);
+
+ handle = NULL;
+ blocked = true;
+ goto cont;
+ }
- rc = mdd_declare_close(env, mdd_obj, ma, handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_declare_close(env, mdd_obj, ma, handle);
+ if (rc)
+ GOTO(stop, rc);
- rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_declare_changelog_store(env, mdd, CL_CLOSE, NULL, NULL,
+ handle);
+ if (rc)
+ GOTO(stop, rc);
- rc = mdd_trans_start(env, mdo2mdd(obj), handle);
- if (rc)
- GOTO(stop, rc);
- }
+ rc = mdd_trans_start(env, mdo2mdd(obj), handle);
+ if (rc)
+ GOTO(stop, rc);
+ }
- mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
- rc = mdd_la_get(env, mdd_obj, &ma->ma_attr,
- mdd_object_capa(env, mdd_obj));
+cont:
+ mdd_write_lock(env, mdd_obj, MOR_TGT_CHILD);
+ rc = mdd_la_get(env, mdd_obj, &ma->ma_attr);
if (rc != 0) {
- CERROR("Failed to get lu_attr of "DFID": %d\n",
+ CERROR("%s: failed to get lu_attr of "DFID": rc = %d\n",
+ lu_dev_name(mdd2lu_dev(mdd)),
PFID(mdd_object_fid(mdd_obj)), rc);
GOTO(out, rc);
}
((mdd_obj->mod_flags & (ORPHAN_OBJ | DEAD_OBJ)) != 0 ||
ma->ma_attr.la_nlink == 0);
- if (is_orphan && handle == NULL) {
+ if (is_orphan && !handle && !blocked) {
mdd_write_unlock(env, mdd_obj);
goto again;
}
mdd_obj->mod_count--; /*release open count */
- if (!is_orphan)
+ /* under mdd write lock */
+ /* If recording, see if we need to remove UID from list. uc is not
+ * initialized if the client has been evicted. */
+ if (mdd_changelog_enabled(env, mdd, CL_OPEN) && uc) {
+ struct mdd_object_user *mou;
+
+ /* look for UID in list */
+ /* If mou is NULL, it probably means logging was enabled after
+ * the user had the file open. So the corresponding close
+ * will not be logged.
+ */
+ mou = mdd_obj_user_find(mdd_obj, uc->uc_uid, uc->uc_gid,
+ open_flags);
+ if (mou) {
+ mou->mou_opencount--;
+ if (mou->mou_opencount == 0) {
+ mdd_obj_user_remove(mdd_obj, mou);
+ last_close_by_uid = true;
+ }
+ }
+ }
+
+ if (!is_orphan || blocked)
GOTO(out, rc = 0);
/* Orphan object */
if ((mdd_obj->mod_flags & ORPHAN_OBJ) != 0) {
/* remove link to object from orphan index */
LASSERT(handle != NULL);
- rc = __mdd_orphan_del(env, mdd_obj, handle);
+ rc = mdd_orphan_delete(env, mdd_obj, handle);
if (rc != 0) {
CERROR("%s: unable to delete "DFID" from orphan list: "
"rc = %d\n", lu_dev_name(mdd2lu_dev(mdd)),
EXIT;
out:
- mdd_write_unlock(env, mdd_obj);
-
- if (rc == 0 &&
- (mode & (FMODE_WRITE | MDS_OPEN_APPEND | MDS_OPEN_TRUNC)) &&
- !(ma->ma_valid & MA_FLAGS && ma->ma_attr_flags & MDS_RECOV_OPEN)) {
- if (handle == NULL) {
- handle = mdd_trans_create(env, mdo2mdd(obj));
- if (IS_ERR(handle))
+ mdd_write_unlock(env, mdd_obj);
+
+ if (rc != 0 || blocked ||
+ !mdd_changelog_enabled(env, mdd, CL_CLOSE))
+ GOTO(stop, rc);
+
+ /* Record CL_CLOSE in changelog only if file was opened in write mode,
+ * or if CL_OPEN was recorded and it's last close by user.
+ * Changelogs mask may change between open and close operations, but
+ * this is not a big deal if we have a CL_CLOSE entry with no matching
+ * CL_OPEN. Plus Changelogs mask may not change often.
+ */
+ if (((!(mdd->mdd_cl.mc_mask & (1 << CL_OPEN)) &&
+ (open_flags & (MDS_FMODE_WRITE | MDS_OPEN_APPEND |
+ MDS_OPEN_TRUNC))) ||
+ ((mdd->mdd_cl.mc_mask & (1 << CL_OPEN)) && last_close_by_uid)) &&
+ !(ma->ma_valid & MA_FLAGS && ma->ma_attr_flags & MDS_RECOV_OPEN)) {
+ if (handle == NULL) {
+ handle = mdd_trans_create(env, mdo2mdd(obj));
+ if (IS_ERR(handle))
GOTO(stop, rc = PTR_ERR(handle));
- rc = mdd_declare_changelog_store(env, mdd, NULL,
- handle);
- if (rc)
- GOTO(stop, rc);
+ rc = mdd_declare_changelog_store(env, mdd, CL_CLOSE,
+ NULL, NULL, handle);
+ if (rc)
+ GOTO(stop, rc);
- rc = mdd_trans_start(env, mdo2mdd(obj), handle);
- if (rc)
- GOTO(stop, rc);
- }
+ rc = mdd_trans_start(env, mdo2mdd(obj), handle);
+ if (rc)
+ GOTO(stop, rc);
+ }
- mdd_changelog_data_store(env, mdd, CL_CLOSE, mode,
- mdd_obj, handle);
- }
+ /* FYI, only the bottom 32 bits of open_flags are recorded */
+ mdd_changelog_data_store(env, mdd, CL_CLOSE, open_flags,
+ mdd_obj, handle);
+ }
stop:
if (handle != NULL && !IS_ERR(handle))
- mdd_trans_stop(env, mdd, rc, handle);
+ rc = mdd_trans_stop(env, mdd, rc, handle);
return rc;
}
}
static int mdd_dir_page_build(const struct lu_env *env, union lu_page *lp,
- int nob, const struct dt_it_ops *iops,
+ size_t nob, const struct dt_it_ops *iops,
struct dt_it *it, __u32 attr, void *arg)
{
struct lu_dirpage *dp = &lp->lp_dir;
struct lu_fid fid;
int first = 1;
+ if (nob < sizeof(*dp))
+ return -EINVAL;
+
memset(area, 0, sizeof (*dp));
area += sizeof (*dp);
nob -= sizeof (*dp);
ent = area;
do {
int len;
- int recsize;
+ size_t recsize;
len = iops->key_size(env, it);
struct md_object *obj,
struct lustre_handle *lh,
struct ldlm_enqueue_info *einfo,
- ldlm_policy_data_t *policy)
+ union ldlm_policy_data *policy)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
return dt_object_lock(env, mdd_object_child(mdd_obj), lh,
static int mdd_object_unlock(const struct lu_env *env,
struct md_object *obj,
struct ldlm_enqueue_info *einfo,
- ldlm_policy_data_t *policy)
+ union ldlm_policy_data *policy)
{
struct mdd_object *mdd_obj = md2mdd_obj(obj);
return dt_object_unlock(env, mdd_object_child(mdd_obj), einfo, policy);
.moo_xattr_get = mdd_xattr_get,
.moo_xattr_set = mdd_xattr_set,
.moo_xattr_list = mdd_xattr_list,
+ .moo_invalidate = mdd_invalidate,
.moo_xattr_del = mdd_xattr_del,
.moo_swap_layouts = mdd_swap_layouts,
.moo_open = mdd_open,
.moo_readpage = mdd_readpage,
.moo_readlink = mdd_readlink,
.moo_changelog = mdd_changelog,
- .moo_capa_get = mdd_capa_get,
.moo_object_sync = mdd_object_sync,
.moo_object_lock = mdd_object_lock,
.moo_object_unlock = mdd_object_unlock,
+ .moo_layout_change = mdd_layout_change,
};