}
-static inline int mdt_remote_permission_check(struct mdt_thread_info *info)
-{
- struct lu_ucred *uc = mdt_ucred(info);
- struct mdt_device *mdt = info->mti_mdt;
-
- if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) {
- if (uc->uc_gid != mdt->mdt_enable_remote_dir_gid &&
- mdt->mdt_enable_remote_dir_gid != -1)
- return -EPERM;
- }
-
- return 0;
-}
-
-/**
- * mdt_remote_permission: Check whether the remote operation is permitted,
- *
- * Only sysadmin can create remote directory / striped directory,
- * migrate directory and set default stripedEA on directory, unless
- *
- * lctl set_param mdt.*.enable_remote_dir_gid=allow_gid.
- *
- * param[in] info: mdt_thread_info.
- *
- * retval = 0 remote operation is allowed.
- * < 0 remote operation is denied.
- */
-static int mdt_remote_permission(struct mdt_thread_info *info)
-{
- struct md_op_spec *spec = &info->mti_spec;
- struct lu_attr *attr = &info->mti_attr.ma_attr;
- struct obd_export *exp = mdt_info_req(info)->rq_export;
- int rc;
-
- if (info->mti_rr.rr_opcode == REINT_MIGRATE) {
- rc = mdt_remote_permission_check(info);
- if (rc != 0)
- return rc;
- }
-
- if (info->mti_rr.rr_opcode == REINT_CREATE &&
- (S_ISDIR(attr->la_mode) && spec->u.sp_ea.eadata != NULL &&
- spec->u.sp_ea.eadatalen != 0)) {
- const struct lmv_user_md *lum = spec->u.sp_ea.eadata;
-
- /* Only new clients can create remote dir( >= 2.4) and
- * striped dir(>= 2.6), old client will return -ENOTSUPP */
- if (!mdt_is_dne_client(exp))
- return -ENOTSUPP;
-
- if (le32_to_cpu(lum->lum_stripe_count) > 1 &&
- !mdt_is_striped_client(exp))
- return -ENOTSUPP;
-
- rc = mdt_remote_permission_check(info);
- if (rc != 0)
- return rc;
- }
-
- if (info->mti_rr.rr_opcode == REINT_SETATTR) {
- struct md_attr *ma = &info->mti_attr;
-
- if ((ma->ma_valid & MA_LMV)) {
- rc = mdt_remote_permission_check(info);
- if (rc != 0)
- return rc;
- }
- }
-
- return 0;
-}
-
static int mdt_unlock_slaves(struct mdt_thread_info *mti,
struct mdt_object *obj,
struct ldlm_enqueue_info *einfo,
policy);
}
-static inline int mdt_reint_striped_lock(struct mdt_thread_info *info,
- struct mdt_object *o,
- struct mdt_lock_handle *lh,
- __u64 ibits,
- struct ldlm_enqueue_info *einfo,
- bool cos_incompat)
+int mdt_reint_striped_lock(struct mdt_thread_info *info,
+ struct mdt_object *o,
+ struct mdt_lock_handle *lh,
+ __u64 ibits,
+ struct ldlm_enqueue_info *einfo,
+ bool cos_incompat)
{
int rc;
return rc;
}
-static inline void
-mdt_reint_striped_unlock(struct mdt_thread_info *info, struct mdt_object *o,
- struct mdt_lock_handle *lh,
- struct ldlm_enqueue_info *einfo, int decref)
+void mdt_reint_striped_unlock(struct mdt_thread_info *info,
+ struct mdt_object *o,
+ struct mdt_lock_handle *lh,
+ struct ldlm_enqueue_info *einfo, int decref)
{
if (einfo->ei_cbdata)
mdt_unlock_slaves(info, o, einfo, decref);
struct mdt_body *repbody;
struct md_attr *ma = &info->mti_attr;
struct mdt_reint_record *rr = &info->mti_rr;
+ struct md_op_spec *spec = &info->mti_spec;
int rc;
ENTRY;
if (!fid_is_md_operative(rr->rr_fid1))
RETURN(-EPERM);
+ if (S_ISDIR(ma->ma_attr.la_mode) &&
+ spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen != 0) {
+ const struct lmv_user_md *lum = spec->u.sp_ea.eadata;
+ struct lu_ucred *uc = mdt_ucred(info);
+ struct obd_export *exp = mdt_info_req(info)->rq_export;
+
+ /* Only new clients can create remote dir( >= 2.4) and
+ * striped dir(>= 2.6), old client will return -ENOTSUPP */
+ if (!mdt_is_dne_client(exp))
+ RETURN(-ENOTSUPP);
+
+ if (le32_to_cpu(lum->lum_stripe_count) > 1) {
+ if (!mdt_is_striped_client(exp))
+ RETURN(-ENOTSUPP);
+
+ if (!mdt->mdt_enable_striped_dir)
+ RETURN(-EPERM);
+ } else if (!mdt->mdt_enable_remote_dir) {
+ RETURN(-EPERM);
+ }
+
+ if (!md_capable(uc, CFS_CAP_SYS_ADMIN) &&
+ uc->uc_gid != mdt->mdt_enable_remote_dir_gid &&
+ mdt->mdt_enable_remote_dir_gid != -1)
+ RETURN(-EPERM);
+ }
+
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
parent = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
if (unlikely(IS_ERR(child)))
GOTO(unlock_parent, rc = PTR_ERR(child));
- rc = mdt_remote_permission(info);
- if (rc != 0)
- GOTO(put_child, rc);
-
ma->ma_need = MA_INODE;
ma->ma_valid = 0;
*/
if (mdt_slc_is_enabled(mdt) && S_ISDIR(ma->ma_attr.la_mode)) {
struct mdt_lock_handle *lhc;
- struct ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
bool cos_incompat;
rc = mdt_object_striped(info, child);
int do_vbr = ma->ma_attr.la_valid &
(LA_MODE | LA_UID | LA_GID | LA_PROJID | LA_FLAGS);
__u64 lockpart = MDS_INODELOCK_UPDATE;
- struct ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
bool cos_incompat;
int rc;
ENTRY;
int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
struct md_attr *ma)
{
+ struct lu_ucred *uc = mdt_ucred(info);
+ cfs_cap_t cap_saved;
int rc;
ENTRY;
&& !(ma->ma_hsm.mh_flags & (HS_DIRTY|HS_RELEASED))) {
ma->ma_hsm.mh_flags |= HS_DIRTY;
+ /* Bump cap so that closes from non-owner writers can
+ * set the HSM state to dirty. */
+ cap_saved = uc->uc_cap;
+ uc->uc_cap |= MD_CAP_TO_MASK(CFS_CAP_FOWNER);
rc = mdt_hsm_attr_set(info, mo, &ma->ma_hsm);
+ uc->uc_cap = cap_saved;
if (rc)
CERROR("file attribute change error for "DFID": %d\n",
PFID(mdt_object_fid(mo)), rc);
}
static int mdt_reint_setattr(struct mdt_thread_info *info,
- struct mdt_lock_handle *lhc)
+ struct mdt_lock_handle *lhc)
{
- struct md_attr *ma = &info->mti_attr;
- struct mdt_reint_record *rr = &info->mti_rr;
- struct ptlrpc_request *req = mdt_info_req(info);
- struct mdt_object *mo;
- struct mdt_body *repbody;
- int rc, rc2;
- ENTRY;
+ struct mdt_device *mdt = info->mti_mdt;
+ struct md_attr *ma = &info->mti_attr;
+ struct mdt_reint_record *rr = &info->mti_rr;
+ struct ptlrpc_request *req = mdt_info_req(info);
+ struct mdt_object *mo;
+ struct mdt_body *repbody;
+ int rc, rc2;
+ ENTRY;
- DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1),
- (unsigned int)ma->ma_attr.la_valid);
+ DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1),
+ (unsigned int)ma->ma_attr.la_valid);
if (info->mti_dlm_req)
ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
- mo = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
- if (IS_ERR(mo))
- GOTO(out, rc = PTR_ERR(mo));
+ mo = mdt_object_find(info->mti_env, mdt, rr->rr_fid1);
+ if (IS_ERR(mo))
+ GOTO(out, rc = PTR_ERR(mo));
if (!mdt_object_exists(mo))
GOTO(out_put, rc = -ENOENT);
if (mdt_object_remote(mo))
GOTO(out_put, rc = -EREMOTE);
+ /* revoke lease lock if size is going to be changed */
+ if (unlikely(ma->ma_attr.la_valid & LA_SIZE &&
+ !(ma->ma_attr_flags & MDS_TRUNC_KEEP_LEASE) &&
+ atomic_read(&mo->mot_lease_count) > 0)) {
+ down_read(&mo->mot_open_sem);
+
+ if (atomic_read(&mo->mot_lease_count) > 0) { /* lease exists */
+ lhc = &info->mti_lh[MDT_LH_LOCAL];
+ mdt_lock_reg_init(lhc, LCK_CW);
+
+ rc = mdt_object_lock(info, mo, lhc, MDS_INODELOCK_OPEN);
+ if (rc != 0) {
+ up_read(&mo->mot_open_sem);
+ GOTO(out_put, rc);
+ }
+
+ /* revoke lease lock */
+ mdt_object_unlock(info, mo, lhc, 1);
+ }
+ up_read(&mo->mot_open_sem);
+ }
+
if (ma->ma_attr.la_valid & LA_SIZE || rr->rr_flags & MRF_OPEN_TRUNC) {
/* Check write access for the O_TRUNC case */
if (mdt_write_read(mo) < 0)
GOTO(out_put, rc);
} else if ((ma->ma_valid & (MA_LOV | MA_LMV)) &&
(ma->ma_valid & MA_INODE)) {
- struct lu_buf *buf = &info->mti_buf;
- struct mdt_lock_handle *lh;
-
- rc = mdt_remote_permission(info);
- if (rc < 0)
- GOTO(out_put, rc);
+ struct lu_buf *buf = &info->mti_buf;
+ struct lu_ucred *uc = mdt_ucred(info);
+ struct mdt_lock_handle *lh;
+
+ /* reject if either remote or striped dir is disabled */
+ if (ma->ma_valid & MA_LMV) {
+ if (!mdt->mdt_enable_remote_dir ||
+ !mdt->mdt_enable_striped_dir)
+ GOTO(out_put, rc = -EPERM);
+
+ if (!md_capable(uc, CFS_CAP_SYS_ADMIN) &&
+ uc->uc_gid != mdt->mdt_enable_remote_dir_gid &&
+ mdt->mdt_enable_remote_dir_gid != -1)
+ GOTO(out_put, rc = -EPERM);
+ }
if (ma->ma_attr.la_valid != 0)
GOTO(out_put, rc = -EPROTO);
struct mdt_object *mc;
struct mdt_lock_handle *parent_lh;
struct mdt_lock_handle *child_lh;
- struct ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct ldlm_enqueue_info *einfo = &info->mti_einfo[0];
__u64 lock_ibits;
bool cos_incompat = false, discard = false;
int no_name = 0;
if (!cos_incompat) {
rc = mdt_object_striped(info, mc);
if (rc < 0)
- GOTO(unlock_parent, rc = PTR_ERR(mc));
+ GOTO(unlock_parent, rc);
cos_incompat = rc;
if (cos_incompat) {
if (rc)
GOTO(out_stat, rc);
} else {
- discard = true;
+ discard = mdt_dom_check_for_discard(info, mc);
}
mdt_handle_last_unlink(info, mc, ma);
unlock_child:
mdt_reint_striped_unlock(info, mc, child_lh, einfo, rc);
put_child:
- if (discard)
- mdt_dom_check_and_discard(info, mc);
mdt_object_put(info->mti_env, mc);
unlock_parent:
mdt_object_unlock(info, mp, parent_lh, rc);
put_parent:
mdt_object_put(info->mti_env, mp);
+
+ /* discard is just a PW DOM lock to drop the data on a client
+ * no need to keep objects being get and locked, do that after all.
+ */
+ if (discard)
+ mdt_dom_discard_data(info, child_fid);
+
return rc;
}
* going to be sent to client. If it is - mdt_intent_policy() path will
* fix it up and turn FL_LOCAL flag off.
*/
- rc = mdt_fid_lock(ns, &lh->mlh_reg_lh, lh->mlh_reg_mode, policy,
- res, dlmflags, &info->mti_exp->exp_handle.h_cookie);
+ rc = mdt_fid_lock(info->mti_env, ns, &lh->mlh_reg_lh, lh->mlh_reg_mode,
+ policy, res, dlmflags,
+ &info->mti_exp->exp_handle.h_cookie);
return rc;
}
memset(policy, 0, sizeof *policy);
policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
- rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
- LCK_EX, &flags, ldlm_blocking_ast,
- ldlm_completion_ast, NULL, NULL, 0,
- LVB_T_NONE,
- &info->mti_exp->exp_handle.h_cookie,
- lh);
+ rc = ldlm_cli_enqueue_local(info->mti_env, ns, res_id,
+ LDLM_IBITS, policy, LCK_EX, &flags,
+ ldlm_blocking_ast,
+ ldlm_completion_ast, NULL, NULL, 0,
+ LVB_T_NONE,
+ &info->mti_exp->exp_handle.h_cookie,
+ lh);
RETURN(rc);
}
RETURN(rc);
EXIT;
}
-/* Update object linkEA */
-struct mdt_lock_list {
- struct mdt_object *mll_obj;
- struct mdt_lock_handle mll_lh;
- struct list_head mll_list;
+static struct mdt_object *mdt_object_find_check(struct mdt_thread_info *info,
+ const struct lu_fid *fid,
+ int idx)
+{
+ struct mdt_object *dir;
+ int rc;
+
+ ENTRY;
+
+ dir = mdt_object_find(info->mti_env, info->mti_mdt, fid);
+ if (IS_ERR(dir))
+ RETURN(dir);
+
+ /* check early, the real version will be saved after locking */
+ rc = mdt_version_get_check(info, dir, idx);
+ if (rc)
+ GOTO(out_put, rc);
+
+ RETURN(dir);
+out_put:
+ mdt_object_put(info->mti_env, dir);
+ return ERR_PTR(rc);
+}
+
+/*
+ * in case obj is remote obj on its parent, revoke LOOKUP lock,
+ * herein we don't really check it, just do revoke.
+ */
+int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
+ struct mdt_object *pobj,
+ struct mdt_object *obj)
+{
+ struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
+ int rc;
+
+ mdt_lock_handle_init(lh);
+ mdt_lock_reg_init(lh, LCK_EX);
+
+ if (mdt_object_remote(pobj)) {
+ /* don't bother to check if pobj and obj are on the same MDT. */
+ rc = mdt_remote_object_lock(info, pobj, mdt_object_fid(obj),
+ &lh->mlh_rreg_lh, LCK_EX,
+ MDS_INODELOCK_LOOKUP, false);
+ } else if (mdt_object_remote(obj)) {
+ struct ldlm_res_id *res = &info->mti_res_id;
+ union ldlm_policy_data *policy = &info->mti_policy;
+ __u64 dlmflags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB |
+ LDLM_FL_COS_INCOMPAT;
+
+ fid_build_reg_res_name(mdt_object_fid(obj), res);
+ memset(policy, 0, sizeof(*policy));
+ policy->l_inodebits.bits = MDS_INODELOCK_LOOKUP;
+ rc = mdt_fid_lock(info->mti_env, info->mti_mdt->mdt_namespace,
+ &lh->mlh_reg_lh, LCK_EX, policy, res,
+ dlmflags, NULL);
+ } else {
+ /* do nothing if both are local */
+ return 0;
+ }
+
+ if (rc != ELDLM_OK)
+ return rc;
+
+ /*
+ * TODO, currently we don't save this lock because there is no place to
+ * hold this lock handle, but to avoid race we need to save this lock.
+ */
+ mdt_object_unlock(info, NULL, lh, 1);
+
+ return 0;
+}
+
+/*
+ * operation may takes locks of linkea, or directory stripes, group them in
+ * different list.
+ */
+struct mdt_sub_lock {
+ struct mdt_object *msl_obj;
+ struct mdt_lock_handle msl_lh;
+ struct list_head msl_linkage;
};
static void mdt_unlock_list(struct mdt_thread_info *info,
- struct list_head *list, int rc)
+ struct list_head *list, int decref)
{
- struct mdt_lock_list *mll;
- struct mdt_lock_list *mll2;
+ struct mdt_sub_lock *msl;
+ struct mdt_sub_lock *tmp;
- list_for_each_entry_safe(mll, mll2, list, mll_list) {
- mdt_object_unlock_put(info, mll->mll_obj, &mll->mll_lh, rc);
- list_del(&mll->mll_list);
- OBD_FREE_PTR(mll);
+ list_for_each_entry_safe(msl, tmp, list, msl_linkage) {
+ mdt_object_unlock_put(info, msl->msl_obj, &msl->msl_lh, decref);
+ list_del(&msl->msl_linkage);
+ OBD_FREE_PTR(msl);
}
}
-static int mdt_lock_objects_in_linkea(struct mdt_thread_info *info,
- struct mdt_object *obj,
- struct mdt_object *pobj,
- struct list_head *lock_list)
+/*
+ * lock parents of links, and also check whether total locks don't exceed
+ * RS_MAX_LOCKS.
+ *
+ * \retval 0 on success, and locks can be saved in ptlrpc_reply_stat
+ * \retval 1 on success, but total lock count may exceed RS_MAX_LOCKS
+ * \retval -ev negative errno upon error
+ */
+static int mdt_lock_links(struct mdt_thread_info *info,
+ struct mdt_object *pobj,
+ const struct md_attr *ma,
+ struct mdt_object *obj,
+ struct list_head *link_locks)
{
- struct lu_buf *buf = &info->mti_big_buf;
- struct linkea_data ldata = { NULL };
- int count;
- int retry_count;
- int rc;
+ struct mdt_device *mdt = info->mti_mdt;
+ struct lu_buf *buf = &info->mti_big_buf;
+ struct lu_name *lname = &info->mti_name;
+ struct linkea_data ldata = { NULL };
+ bool blocked = false;
+ int retries = 5;
+ int local_lnkp_cnt = 0;
+ int rc;
+
ENTRY;
if (S_ISDIR(lu_object_attr(&obj->mot_obj)))
RETURN(0);
- buf = lu_buf_check_and_alloc(buf, PATH_MAX);
+ buf = lu_buf_check_and_alloc(buf, MAX_LINKEA_SIZE);
if (buf->lb_buf == NULL)
RETURN(-ENOMEM);
ldata.ld_buf = buf;
rc = mdt_links_read(info, obj, &ldata);
- if (rc != 0) {
+ if (rc) {
if (rc == -ENOENT || rc == -ENODATA)
rc = 0;
RETURN(rc);
}
- /* ignore the migrating parent(@pobj) */
- retry_count = ldata.ld_leh->leh_reccount - 1;
-
-again:
- LASSERT(ldata.ld_leh != NULL);
- ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1);
- for (count = 0; count < ldata.ld_leh->leh_reccount; count++) {
- struct mdt_device *mdt = info->mti_mdt;
- struct mdt_object *mdt_pobj;
- struct mdt_lock_list *mll;
- struct lu_name name;
- struct lu_fid fid;
+repeat:
+ for (linkea_first_entry(&ldata); ldata.ld_lee && !rc;
+ linkea_next_entry(&ldata)) {
+ struct mdt_object *lnkp;
+ struct mdt_sub_lock *msl;
+ struct lu_fid fid;
__u64 ibits;
- linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
- &name, &fid);
- mdt_pobj = mdt_object_find(info->mti_env, mdt, &fid);
- if (IS_ERR(mdt_pobj)) {
- CWARN("%s: cannot find obj "DFID": rc = %ld\n",
- mdt_obd_name(mdt), PFID(&fid), PTR_ERR(mdt_pobj));
- goto next;
+ linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen, lname,
+ &fid);
+
+ /* check if it's also linked to parent */
+ if (lu_fid_eq(mdt_object_fid(pobj), &fid)) {
+ CDEBUG(D_INFO, "skip parent "DFID", reovke "DNAME"\n",
+ PFID(&fid), PNAME(lname));
+ /* in case link is remote object, revoke LOOKUP lock */
+ rc = mdt_revoke_remote_lookup_lock(info, pobj, obj);
+ continue;
}
- if (!mdt_object_exists(mdt_pobj)) {
- CDEBUG(D_INFO, "%s: obj "DFID" does not exist\n",
- mdt_obd_name(mdt), PFID(&fid));
- mdt_object_put(info->mti_env, mdt_pobj);
- goto next;
+ lnkp = NULL;
+
+ /* check if it's linked to a stripe of parent */
+ if (ma->ma_valid & MA_LMV) {
+ struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
+ struct lu_fid *stripe_fid = &info->mti_tmp_fid1;
+ int j = 0;
+
+ for (; j < le32_to_cpu(lmv->lmv_stripe_count); j++) {
+ fid_le_to_cpu(stripe_fid,
+ &lmv->lmv_stripe_fids[j]);
+ if (lu_fid_eq(stripe_fid, &fid)) {
+ CDEBUG(D_INFO, "skip stripe "DFID
+ ", reovke "DNAME"\n",
+ PFID(&fid), PNAME(lname));
+ lnkp = mdt_object_find(info->mti_env,
+ mdt, &fid);
+ if (IS_ERR(lnkp))
+ GOTO(out, rc = PTR_ERR(lnkp));
+ break;
+ }
+ }
+
+ if (lnkp) {
+ rc = mdt_revoke_remote_lookup_lock(info, lnkp,
+ obj);
+ mdt_object_put(info->mti_env, lnkp);
+ continue;
+ }
}
- /* Check if the object already exists in the list */
- list_for_each_entry(mll, lock_list, mll_list) {
- if (mll->mll_obj == mdt_pobj) {
- mdt_object_put(info->mti_env, mdt_pobj);
- goto next;
+ /* Check if it's already locked */
+ list_for_each_entry(msl, link_locks, msl_linkage) {
+ if (lu_fid_eq(mdt_object_fid(msl->msl_obj), &fid)) {
+ CDEBUG(D_INFO,
+ DFID" was locked, revoke "DNAME"\n",
+ PFID(&fid), PNAME(lname));
+ lnkp = msl->msl_obj;
+ break;
}
}
- if (mdt_pobj == pobj) {
- CDEBUG(D_INFO, "%s: skipping parent obj "DFID"\n",
- mdt_obd_name(mdt), PFID(&fid));
- mdt_object_put(info->mti_env, mdt_pobj);
- goto next;
+ if (lnkp) {
+ rc = mdt_revoke_remote_lookup_lock(info, lnkp, obj);
+ continue;
}
- OBD_ALLOC_PTR(mll);
- if (mll == NULL) {
- mdt_object_put(info->mti_env, mdt_pobj);
- GOTO(out, rc = -ENOMEM);
+ CDEBUG(D_INFO, "lock "DFID":"DNAME"\n",
+ PFID(&fid), PNAME(lname));
+
+ lnkp = mdt_object_find(info->mti_env, mdt, &fid);
+ if (IS_ERR(lnkp)) {
+ CWARN("%s: cannot find obj "DFID": %ld\n",
+ mdt_obd_name(mdt), PFID(&fid), PTR_ERR(lnkp));
+ continue;
+ }
+
+ if (!mdt_object_exists(lnkp)) {
+ CDEBUG(D_INFO, DFID" doesn't exist, skip "DNAME"\n",
+ PFID(&fid), PNAME(lname));
+ mdt_object_put(info->mti_env, lnkp);
+ continue;
}
- /* Since this needs to lock all of objects in linkea, to avoid
- * deadlocks, because it does not follow parent-child order as
- * other MDT operation, let's use try_lock here and if the lock
- * cannot be gotten because of conflicting locks, then drop all
- * current locks, send an AST to the client, and start again. */
- mdt_lock_pdo_init(&mll->mll_lh, LCK_PW, &name);
+ if (!mdt_object_remote(lnkp))
+ local_lnkp_cnt++;
+
+ OBD_ALLOC_PTR(msl);
+ if (msl == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ /*
+ * we can't follow parent-child lock order like other MD
+ * operations, use lock_try here to avoid deadlock, if the lock
+ * cannot be taken, drop all locks taken, revoke the blocked
+ * one, and continue processing the remaining entries, and in
+ * the end of the loop restart from beginning.
+ */
+ mdt_lock_pdo_init(&msl->msl_lh, LCK_PW, lname);
ibits = 0;
- rc = mdt_object_lock_try(info, mdt_pobj, &mll->mll_lh, &ibits,
+ rc = mdt_object_lock_try(info, lnkp, &msl->msl_lh, &ibits,
MDS_INODELOCK_UPDATE, true);
if (!(ibits & MDS_INODELOCK_UPDATE)) {
- mdt_unlock_list(info, lock_list, 0);
+ blocked = true;
- CDEBUG(D_INFO, "%s: busy lock on "DFID" %s retry %d\n",
- mdt_obd_name(mdt), PFID(&fid), name.ln_name,
- retry_count);
+ CDEBUG(D_INFO, "busy lock on "DFID" "DNAME" retry %d\n",
+ PFID(&fid), PNAME(lname), retries);
- if (retry_count == 0) {
- mdt_object_put(info->mti_env, mdt_pobj);
- OBD_FREE_PTR(mll);
- GOTO(out, rc = -EBUSY);
- }
+ mdt_unlock_list(info, link_locks, 1);
- mdt_lock_pdo_init(&mll->mll_lh, LCK_PW, &name);
- rc = mdt_object_lock(info, mdt_pobj, &mll->mll_lh,
+ mdt_lock_pdo_init(&msl->msl_lh, LCK_PW, lname);
+ rc = mdt_object_lock(info, lnkp, &msl->msl_lh,
MDS_INODELOCK_UPDATE);
- if (rc != 0) {
- mdt_object_put(info->mti_env, mdt_pobj);
- OBD_FREE_PTR(mll);
+ if (rc) {
+ mdt_object_put(info->mti_env, lnkp);
+ OBD_FREE_PTR(msl);
GOTO(out, rc);
}
- if (mdt_object_remote(mdt_pobj)) {
+ if (mdt_object_remote(lnkp)) {
struct ldlm_lock *lock;
- /* For remote object, Set lock to cb_atomic,
+ /*
+ * for remote object, set lock cb_atomic,
* so lock can be released in blocking_ast()
- * immediately, then the next try_lock will
- * have better chance to succeds */
- lock =
- ldlm_handle2lock(&mll->mll_lh.mlh_rreg_lh);
+ * immediately, then the next lock_try will
+ * have better chance of success.
+ */
+ lock = ldlm_handle2lock(
+ &msl->msl_lh.mlh_rreg_lh);
LASSERT(lock != NULL);
lock_res_and_lock(lock);
ldlm_set_atomic_cb(lock);
unlock_res_and_lock(lock);
LDLM_LOCK_PUT(lock);
}
- mdt_object_unlock_put(info, mdt_pobj, &mll->mll_lh, rc);
- OBD_FREE_PTR(mll);
- retry_count--;
- goto again;
+
+ mdt_object_unlock_put(info, lnkp, &msl->msl_lh, 1);
+ OBD_FREE_PTR(msl);
+ continue;
+ }
+
+ INIT_LIST_HEAD(&msl->msl_linkage);
+ msl->msl_obj = lnkp;
+ list_add_tail(&msl->msl_linkage, link_locks);
+
+ rc = mdt_revoke_remote_lookup_lock(info, lnkp, obj);
+ }
+
+ if (blocked) {
+ rc = -EBUSY;
+ if (--retries > 0) {
+ mdt_unlock_list(info, link_locks, rc);
+ blocked = false;
+ local_lnkp_cnt = 0;
+ goto repeat;
}
- rc = 0;
- INIT_LIST_HEAD(&mll->mll_list);
- mll->mll_obj = mdt_pobj;
- list_add_tail(&mll->mll_list, lock_list);
-next:
- ldata.ld_lee = (struct link_ea_entry *)((char *)ldata.ld_lee +
- ldata.ld_reclen);
}
+
+ EXIT;
out:
- if (rc != 0)
- mdt_unlock_list(info, lock_list, rc);
- RETURN(rc);
+ if (rc)
+ mdt_unlock_list(info, link_locks, rc);
+ else if (local_lnkp_cnt > RS_MAX_LOCKS - 6)
+ /*
+ * parent may have 3 local objects: master object and 2 stripes
+ * (if it's being migrated too); source may have 2 local
+ * objects: master and 1 stripe; target has 1 local object.
+ */
+ rc = 1;
+ return rc;
}
-/* migrate files from one MDT to another MDT */
-static int mdt_reint_migrate_internal(struct mdt_thread_info *info,
- struct mdt_lock_handle *lhc)
+static int mdt_lock_remote_slaves(struct mdt_thread_info *info,
+ struct mdt_object *obj,
+ const struct md_attr *ma,
+ struct list_head *slave_locks)
{
- struct mdt_reint_record *rr = &info->mti_rr;
- struct md_attr *ma = &info->mti_attr;
- struct mdt_object *msrcdir;
- struct mdt_object *mold;
- struct mdt_object *mnew = NULL;
- struct mdt_lock_handle *lh_dirp;
- struct mdt_lock_handle *lh_childp;
- struct mdt_lock_handle *lh_tgtp = NULL;
- struct lu_fid *old_fid = &info->mti_tmp_fid1;
- struct list_head lock_list;
- __u64 lock_ibits;
- struct ldlm_lock *lease = NULL;
- bool lock_open_sem = false;
- int rc;
+ struct mdt_device *mdt = info->mti_mdt;
+ const struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
+ struct lu_fid *fid = &info->mti_tmp_fid1;
+ struct mdt_object *slave;
+ struct mdt_sub_lock *msl;
+ int i;
+ int rc;
+
ENTRY;
- CDEBUG(D_INODE, "migrate "DFID"/"DNAME" to "DFID"\n", PFID(rr->rr_fid1),
- PNAME(&rr->rr_name), PFID(rr->rr_fid2));
+ LASSERT(mdt_object_remote(obj));
+ LASSERT(ma->ma_valid & MA_LMV);
+ LASSERT(lmv);
- /* 1: lock the source dir. */
- msrcdir = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
- if (IS_ERR(msrcdir)) {
- CDEBUG(D_OTHER, "%s: cannot find source dir "DFID" : rc = %d\n",
- mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1),
- (int)PTR_ERR(msrcdir));
- RETURN(PTR_ERR(msrcdir));
- }
+ if (le32_to_cpu(lmv->lmv_magic) != LMV_MAGIC_V1)
+ RETURN(-EINVAL);
- lh_dirp = &info->mti_lh[MDT_LH_PARENT];
- mdt_lock_pdo_init(lh_dirp, LCK_PW, &rr->rr_name);
- rc = mdt_reint_object_lock(info, msrcdir, lh_dirp, MDS_INODELOCK_UPDATE,
- true);
- if (rc)
- GOTO(out_put_parent, rc);
+ if (le32_to_cpu(lmv->lmv_stripe_count) < 1)
+ RETURN(0);
- if (!mdt_object_remote(msrcdir)) {
- rc = mdt_version_get_check_save(info, msrcdir, 0);
- if (rc)
- GOTO(out_unlock_parent, rc);
- }
+ for (i = 0; i < le32_to_cpu(lmv->lmv_stripe_count); i++) {
+ fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[i]);
- /* 2: sanity check and find the object to be migrated. */
- fid_zero(old_fid);
- rc = mdt_lookup_version_check(info, msrcdir, &rr->rr_name, old_fid, 2);
- if (rc != 0)
- GOTO(out_unlock_parent, rc);
+ slave = mdt_object_find(info->mti_env, mdt, fid);
+ if (IS_ERR(slave))
+ GOTO(out, rc = PTR_ERR(slave));
- if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
- GOTO(out_unlock_parent, rc = -EINVAL);
+ OBD_ALLOC_PTR(msl);
+ if (!msl) {
+ mdt_object_put(info->mti_env, slave);
+ GOTO(out, rc = -ENOMEM);
+ }
- if (!fid_is_md_operative(old_fid))
- GOTO(out_unlock_parent, rc = -EPERM);
+ mdt_lock_reg_init(&msl->msl_lh, LCK_EX);
+ rc = mdt_reint_object_lock(info, slave, &msl->msl_lh,
+ MDS_INODELOCK_UPDATE, true);
+ if (rc) {
+ OBD_FREE_PTR(msl);
+ mdt_object_put(info->mti_env, slave);
+ GOTO(out, rc);
+ }
- if (lu_fid_eq(old_fid, &info->mti_mdt->mdt_md_root_fid))
- GOTO(out_unlock_parent, rc = -EPERM);
+ INIT_LIST_HEAD(&msl->msl_linkage);
+ msl->msl_obj = slave;
+ list_add_tail(&msl->msl_linkage, slave_locks);
+ }
+ EXIT;
- mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
- if (IS_ERR(mold))
- GOTO(out_unlock_parent, rc = PTR_ERR(mold));
+out:
+ if (rc)
+ mdt_unlock_list(info, slave_locks, rc);
+ return rc;
+}
- if (!mdt_object_exists(mold)) {
- LU_OBJECT_DEBUG(D_INODE, info->mti_env,
- &mold->mot_obj,
- "object does not exist");
- GOTO(out_put_child, rc = -ENOENT);
+static inline void mdt_migrate_object_unlock(struct mdt_thread_info *info,
+ struct mdt_object *obj,
+ struct mdt_lock_handle *lh,
+ struct ldlm_enqueue_info *einfo,
+ struct list_head *slave_locks,
+ int decref)
+{
+ if (mdt_object_remote(obj)) {
+ mdt_unlock_list(info, slave_locks, decref);
+ mdt_object_unlock(info, obj, lh, decref);
+ } else {
+ mdt_reint_striped_unlock(info, obj, lh, einfo, decref);
}
+}
- if (mdt_object_remote(mold)) {
- CDEBUG(D_OTHER, "%s: source "DFID" is on the remote MDT\n",
- mdt_obd_name(info->mti_mdt), PFID(old_fid));
- GOTO(out_put_child, rc = -EREMOTE);
- }
+/* lock parent and its stripes */
+static int mdt_migrate_parent_lock(struct mdt_thread_info *info,
+ struct mdt_object *obj,
+ const struct md_attr *ma,
+ struct mdt_lock_handle *lh,
+ struct ldlm_enqueue_info *einfo,
+ struct list_head *slave_locks)
+{
+ int rc;
- if (S_ISREG(lu_object_attr(&mold->mot_obj)) &&
- !mdt_object_remote(msrcdir)) {
- CDEBUG(D_OTHER, "%s: parent "DFID" is still on the same"
- " MDT, which should be migrated first:"
- " rc = %d\n", mdt_obd_name(info->mti_mdt),
- PFID(mdt_object_fid(msrcdir)), -EPERM);
- GOTO(out_put_child, rc = -EPERM);
+ if (mdt_object_remote(obj)) {
+ rc = mdt_remote_object_lock(info, obj, mdt_object_fid(obj),
+ &lh->mlh_rreg_lh, LCK_PW,
+ MDS_INODELOCK_UPDATE, false);
+ if (rc != ELDLM_OK)
+ return rc;
+
+ /*
+ * if obj is remote and striped, lock its stripes explicitly
+ * because it's not striped in LOD layer on this MDT.
+ */
+ if (ma->ma_valid & MA_LMV) {
+ rc = mdt_lock_remote_slaves(info, obj, ma, slave_locks);
+ if (rc)
+ mdt_object_unlock(info, obj, lh, rc);
+ }
+ } else {
+ rc = mdt_reint_striped_lock(info, obj, lh, MDS_INODELOCK_UPDATE,
+ einfo, true);
}
- rc = mdt_remote_permission(info);
- if (rc != 0)
- GOTO(out_put_child, rc);
+ return rc;
+}
- /* 3: iterate the linkea of the object and lock all of the objects */
- INIT_LIST_HEAD(&lock_list);
- rc = mdt_lock_objects_in_linkea(info, mold, msrcdir, &lock_list);
- if (rc != 0)
- GOTO(out_put_child, rc);
+/*
+ * in migration, object may be remote, and we need take full lock of it and its
+ * stripes if it's directory, besides, object may be a remote object on its
+ * parent, revoke its LOOKUP lock on where its parent is located.
+ */
+static int mdt_migrate_object_lock(struct mdt_thread_info *info,
+ struct mdt_object *pobj,
+ struct mdt_object *obj,
+ struct mdt_lock_handle *lh,
+ struct ldlm_enqueue_info *einfo,
+ struct list_head *slave_locks)
+{
+ int rc;
- if (info->mti_spec.sp_migrate_close) {
- struct close_data *data;
- struct mdt_body *repbody;
- bool lease_broken = false;
+ if (mdt_object_remote(obj)) {
+ rc = mdt_revoke_remote_lookup_lock(info, pobj, obj);
+ if (rc)
+ return rc;
- if (!req_capsule_field_present(info->mti_pill, &RMF_MDT_EPOCH,
- RCL_CLIENT) ||
- !req_capsule_field_present(info->mti_pill, &RMF_CLOSE_DATA,
- RCL_CLIENT))
- GOTO(out_lease, rc = -EPROTO);
+ rc = mdt_remote_object_lock(info, obj, mdt_object_fid(obj),
+ &lh->mlh_rreg_lh, LCK_EX,
+ MDS_INODELOCK_FULL, false);
+ if (rc != ELDLM_OK)
+ return rc;
- data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
- if (data == NULL)
- GOTO(out_lease, rc = -EPROTO);
+ /*
+ * if obj is remote and striped, lock its stripes explicitly
+ * because it's not striped in LOD layer on this MDT.
+ */
+ if (S_ISDIR(lu_object_attr(&obj->mot_obj))) {
+ struct md_attr *ma = &info->mti_attr;
- lease = ldlm_handle2lock(&data->cd_handle);
- if (lease == NULL)
- GOTO(out_lease, rc = -ESTALE);
+ ma->ma_lmv = info->mti_big_lmm;
+ ma->ma_lmv_size = info->mti_big_lmmsize;
+ ma->ma_valid = 0;
+ rc = mdt_stripe_get(info, obj, ma, XATTR_NAME_LMV);
+ if (rc) {
+ mdt_object_unlock(info, obj, lh, rc);
+ return rc;
+ }
- /* try to hold open_sem so that nobody else can open the file */
- if (!down_write_trylock(&mold->mot_open_sem)) {
- ldlm_lock_cancel(lease);
- GOTO(out_lease, rc = -EBUSY);
+ if (ma->ma_valid & MA_LMV) {
+ rc = mdt_lock_remote_slaves(info, obj, ma,
+ slave_locks);
+ if (rc)
+ mdt_object_unlock(info, obj, lh, rc);
+ }
+ }
+ } else {
+ if (mdt_object_remote(pobj)) {
+ rc = mdt_revoke_remote_lookup_lock(info, pobj, obj);
+ if (rc)
+ return rc;
}
- lock_open_sem = true;
- /* Check if the lease open lease has already canceled */
- lock_res_and_lock(lease);
- lease_broken = ldlm_is_cancel(lease);
- unlock_res_and_lock(lease);
+ rc = mdt_reint_striped_lock(info, obj, lh, MDS_INODELOCK_FULL,
+ einfo, true);
+ }
- LDLM_DEBUG(lease, DFID " lease broken? %d",
- PFID(mdt_object_fid(mold)), lease_broken);
+ return rc;
+}
- /* Cancel server side lease. Client side counterpart should
- * have been cancelled. It's okay to cancel it now as we've
- * held mot_open_sem. */
- ldlm_lock_cancel(lease);
+/*
+ * lookup source by name, if parent is striped directory, we need to find the
+ * corresponding stripe where source is located, and then lookup there.
+ *
+ * besides, if parent is migrating too, and file is already in target stripe,
+ * this should be a redo of 'lfs migrate' on client side.
+ */
+static int mdt_migrate_lookup(struct mdt_thread_info *info,
+ struct mdt_object *pobj,
+ const struct md_attr *ma,
+ const struct lu_name *lname,
+ struct mdt_object **spobj,
+ struct mdt_object **sobj)
+{
+ const struct lu_env *env = info->mti_env;
+ struct lu_fid *fid = &info->mti_tmp_fid1;
+ struct mdt_object *stripe;
+ int rc;
- if (lease_broken)
- GOTO(out_lease, rc = -EAGAIN);
-out_lease:
- rc = mdt_close_internal(info, mdt_info_req(info), NULL);
- repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
- repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
- if (rc != 0)
- GOTO(out_unlock_list, rc);
- }
+ if (ma->ma_valid & MA_LMV) {
+ /* if parent is striped, lookup on corresponding stripe */
+ struct lmv_mds_md_v1 *lmv = &ma->ma_lmv->lmv_md_v1;
+ __u32 hash_type = le32_to_cpu(lmv->lmv_hash_type);
+ __u32 stripe_count = le32_to_cpu(lmv->lmv_stripe_count);
+ bool is_migrating = le32_to_cpu(lmv->lmv_hash_type) &
+ LMV_HASH_FLAG_MIGRATION;
+
+ if (is_migrating) {
+ hash_type = le32_to_cpu(lmv->lmv_migrate_hash);
+ stripe_count -= le32_to_cpu(lmv->lmv_migrate_offset);
+ }
- /* 4: lock of the object migrated object */
- lh_childp = &info->mti_lh[MDT_LH_OLD];
- mdt_lock_reg_init(lh_childp, LCK_EX);
- lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
- MDS_INODELOCK_LAYOUT;
- if (mdt_object_remote(msrcdir)) {
- /* Enqueue lookup lock from the parent MDT */
- rc = mdt_remote_object_lock(info, msrcdir, mdt_object_fid(mold),
- &lh_childp->mlh_rreg_lh,
- lh_childp->mlh_rreg_mode,
- MDS_INODELOCK_LOOKUP, false);
- if (rc != ELDLM_OK)
- GOTO(out_unlock_list, rc);
+ rc = lmv_name_to_stripe_index(hash_type, stripe_count,
+ lname->ln_name,
+ lname->ln_namelen);
+ if (rc < 0)
+ return rc;
- lock_ibits &= ~MDS_INODELOCK_LOOKUP;
- }
+ if (le32_to_cpu(lmv->lmv_hash_type) & LMV_HASH_FLAG_MIGRATION)
+ rc += le32_to_cpu(lmv->lmv_migrate_offset);
+
+ fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[rc]);
+
+ stripe = mdt_object_find(env, info->mti_mdt, fid);
+ if (IS_ERR(stripe))
+ return PTR_ERR(stripe);
+
+ fid_zero(fid);
+ rc = mdo_lookup(env, mdt_object_child(stripe), lname, fid,
+ &info->mti_spec);
+ if (rc == -ENOENT && is_migrating) {
+ /*
+ * if parent is migrating, and lookup child failed on
+ * source stripe, lookup again on target stripe, if it
+ * exists, it means previous migration was interrupted,
+ * and current file was migrated already.
+ */
+ mdt_object_put(env, stripe);
+
+ hash_type = le32_to_cpu(lmv->lmv_hash_type);
+ stripe_count = le32_to_cpu(lmv->lmv_migrate_offset);
+
+ rc = lmv_name_to_stripe_index(hash_type, stripe_count,
+ lname->ln_name,
+ lname->ln_namelen);
+ if (rc < 0)
+ return rc;
- rc = mdt_reint_object_lock(info, mold, lh_childp, lock_ibits, true);
- if (rc != 0)
- GOTO(out_unlock_child, rc);
+ fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[rc]);
- /* Migration is incompatible with HSM. */
- ma->ma_need = MA_HSM;
- ma->ma_valid = 0;
- rc = mdt_attr_get_complex(info, mold, ma);
- if (rc != 0)
- GOTO(out_unlock_child, rc);
-
- if ((ma->ma_valid & MA_HSM) && ma->ma_hsm.mh_flags != 0) {
- rc = -ENOSYS;
- CDEBUG(D_OTHER,
- "%s: cannot migrate HSM archived file "DFID": rc = %d\n",
- mdt_obd_name(info->mti_mdt), PFID(old_fid), rc);
- GOTO(out_unlock_child, rc);
- }
+ stripe = mdt_object_find(env, info->mti_mdt, fid);
+ if (IS_ERR(stripe))
+ return PTR_ERR(stripe);
- ma->ma_need = MA_LMV;
- ma->ma_valid = 0;
- ma->ma_lmv = (union lmv_mds_md *)info->mti_xattr_buf;
- ma->ma_lmv_size = sizeof(info->mti_xattr_buf);
- rc = mdt_stripe_get(info, mold, ma, XATTR_NAME_LMV);
- if (rc != 0)
- GOTO(out_unlock_child, rc);
-
- if ((ma->ma_valid & MA_LMV)) {
- struct lmv_mds_md_v1 *lmm1;
-
- lmv_le_to_cpu(ma->ma_lmv, ma->ma_lmv);
- lmm1 = &ma->ma_lmv->lmv_md_v1;
- if (!(lmm1->lmv_hash_type & LMV_HASH_FLAG_MIGRATION)) {
- CDEBUG(D_OTHER, "%s: can not migrate striped dir "DFID
- ": rc = %d\n", mdt_obd_name(info->mti_mdt),
- PFID(mdt_object_fid(mold)), -EPERM);
- GOTO(out_unlock_child, rc = -EPERM);
+ fid_zero(fid);
+ rc = mdo_lookup(env, mdt_object_child(stripe), lname,
+ fid, &info->mti_spec);
+ mdt_object_put(env, stripe);
+ return rc ?: -EALREADY;
+ } else if (rc) {
+ mdt_object_put(env, stripe);
+ return rc;
}
+ } else {
+ fid_zero(fid);
+ rc = mdo_lookup(env, mdt_object_child(pobj), lname, fid,
+ &info->mti_spec);
+ if (rc)
+ return rc;
- if (!fid_is_sane(&lmm1->lmv_stripe_fids[1]))
- GOTO(out_unlock_child, rc = -EINVAL);
+ stripe = pobj;
+ mdt_object_get(env, stripe);
+ }
- mnew = mdt_object_find(info->mti_env, info->mti_mdt,
- &lmm1->lmv_stripe_fids[1]);
- if (IS_ERR(mnew))
- GOTO(out_unlock_child, rc = PTR_ERR(mnew));
-
- if (!mdt_object_remote(mnew)) {
- CDEBUG(D_OTHER,
- "%s: "DFID" being migrated is on this MDT:"
- " rc = %d\n", mdt_obd_name(info->mti_mdt),
- PFID(rr->rr_fid2), -EPERM);
- GOTO(out_put_new, rc = -EPERM);
- }
+ *spobj = stripe;
- lh_tgtp = &info->mti_lh[MDT_LH_CHILD];
- mdt_lock_reg_init(lh_tgtp, LCK_EX);
- rc = mdt_remote_object_lock(info, mnew,
- mdt_object_fid(mnew),
- &lh_tgtp->mlh_rreg_lh,
- lh_tgtp->mlh_rreg_mode,
- MDS_INODELOCK_UPDATE, false);
- if (rc != 0) {
- lh_tgtp = NULL;
- GOTO(out_put_new, rc);
- }
- } else {
- mnew = mdt_object_find(info->mti_env, info->mti_mdt,
- rr->rr_fid2);
- if (IS_ERR(mnew))
- GOTO(out_unlock_child, rc = PTR_ERR(mnew));
- if (!mdt_object_remote(mnew)) {
- CDEBUG(D_OTHER, "%s: Migration "DFID" is on this MDT:"
- " rc = %d\n", mdt_obd_name(info->mti_mdt),
- PFID(rr->rr_fid2), -EXDEV);
- GOTO(out_put_new, rc = -EXDEV);
- }
+ *sobj = mdt_object_find(env, info->mti_mdt, fid);
+ if (IS_ERR(*sobj)) {
+ mdt_object_put(env, stripe);
+ rc = PTR_ERR(*sobj);
+ *spobj = NULL;
+ *sobj = NULL;
}
- /* 5: migrate it */
- mdt_reint_init_ma(info, ma);
+ return rc;
+}
- mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
- OBD_FAIL_MDS_REINT_RENAME_WRITE);
+/* end lease and close file for regular file */
+static int mdd_migrate_close(struct mdt_thread_info *info,
+ struct mdt_object *obj)
+{
+ struct close_data *data;
+ struct mdt_body *repbody;
+ struct ldlm_lock *lease;
+ int rc;
+ int rc2;
- rc = mdo_migrate(info->mti_env, mdt_object_child(msrcdir),
- mdt_object_child(mold), &rr->rr_name,
- mdt_object_child(mnew), ma);
- if (rc != 0)
- GOTO(out_unlock_new, rc);
+ rc = -EPROTO;
+ if (!req_capsule_field_present(info->mti_pill, &RMF_MDT_EPOCH,
+ RCL_CLIENT) ||
+ !req_capsule_field_present(info->mti_pill, &RMF_CLOSE_DATA,
+ RCL_CLIENT))
+ goto close;
-out_unlock_new:
- if (lh_tgtp != NULL)
- mdt_object_unlock(info, mnew, lh_tgtp, rc);
-out_put_new:
- if (mnew)
- mdt_object_put(info->mti_env, mnew);
-out_unlock_child:
- mdt_object_unlock(info, mold, lh_childp, rc);
-out_unlock_list:
- /* we don't really modify linkea objects, so we can safely decref these
- * locks, and this can avoid saving them as COS locks, which may prevent
- * subsequent migrate. */
- mdt_unlock_list(info, &lock_list, 1);
- if (lease != NULL) {
- ldlm_reprocess_all(lease->l_resource);
- LDLM_LOCK_PUT(lease);
+ data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
+ if (!data)
+ goto close;
+
+ rc = -ESTALE;
+ lease = ldlm_handle2lock(&data->cd_handle);
+ if (!lease)
+ goto close;
+
+ /* check if the lease was already canceled */
+ lock_res_and_lock(lease);
+ rc = ldlm_is_cancel(lease);
+ unlock_res_and_lock(lease);
+
+ if (rc) {
+ rc = -EAGAIN;
+ LDLM_DEBUG(lease, DFID" lease broken",
+ PFID(mdt_object_fid(obj)));
}
- if (lock_open_sem)
- up_write(&mold->mot_open_sem);
-out_put_child:
- mdt_object_put(info->mti_env, mold);
-out_unlock_parent:
- mdt_object_unlock(info, msrcdir, lh_dirp, rc);
-out_put_parent:
- mdt_object_put(info->mti_env, msrcdir);
+ /*
+ * cancel server side lease, client side counterpart should have been
+ * cancelled, it's okay to cancel it now as we've held mot_open_sem.
+ */
+ ldlm_lock_cancel(lease);
+ ldlm_reprocess_all(lease->l_resource);
+ LDLM_LOCK_PUT(lease);
- RETURN(rc);
+close:
+ rc2 = mdt_close_internal(info, mdt_info_req(info), NULL);
+ repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
+ repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
+
+ return rc ?: rc2;
}
-static struct mdt_object *mdt_object_find_check(struct mdt_thread_info *info,
- const struct lu_fid *fid,
- int idx)
+/*
+ * migrate file in below steps:
+ * 1. lock parent and its stripes
+ * 2. lookup source by name
+ * 3. lock parents of source links if source is not directory
+ * 4. reject if source is in HSM
+ * 5. take source open_sem and close file if source is regular file
+ * 6. lock source and its stripes if it's directory
+ * 7. lock target so subsequent change to it can trigger COS
+ * 8. migrate file
+ * 9. unlock above locks
+ * 10. sync device if source has links
+ */
+static int mdt_reint_migrate_internal(struct mdt_thread_info *info)
{
- struct mdt_object *dir;
+ const struct lu_env *env = info->mti_env;
+ struct mdt_device *mdt = info->mti_mdt;
+ struct mdt_reint_record *rr = &info->mti_rr;
+ struct lu_ucred *uc = mdt_ucred(info);
+ struct md_attr *ma = &info->mti_attr;
+ struct ldlm_enqueue_info *peinfo = &info->mti_einfo[0];
+ struct ldlm_enqueue_info *seinfo = &info->mti_einfo[1];
+ struct mdt_object *pobj;
+ struct mdt_object *spobj = NULL;
+ struct mdt_object *sobj = NULL;
+ struct mdt_object *tobj;
+ struct mdt_lock_handle *lhp;
+ struct mdt_lock_handle *lhs;
+ struct mdt_lock_handle *lht;
+ LIST_HEAD(parent_slave_locks);
+ LIST_HEAD(child_slave_locks);
+ LIST_HEAD(link_locks);
+ bool open_sem_locked = false;
+ bool do_sync = false;
int rc;
ENTRY;
- dir = mdt_object_find(info->mti_env, info->mti_mdt, fid);
- if (IS_ERR(dir))
- RETURN(dir);
+ CDEBUG(D_INODE, "migrate "DFID"/"DNAME" to "DFID"\n", PFID(rr->rr_fid1),
+ PNAME(&rr->rr_name), PFID(rr->rr_fid2));
- /* check early, the real version will be saved after locking */
- rc = mdt_version_get_check(info, dir, idx);
+ /* don't allow migrate . or .. */
+ if (lu_name_is_dot_or_dotdot(&rr->rr_name))
+ RETURN(-EBUSY);
+
+ if (!mdt->mdt_enable_remote_dir || !mdt->mdt_enable_dir_migration)
+ RETURN(-EPERM);
+
+ if (!md_capable(uc, CFS_CAP_SYS_ADMIN) &&
+ uc->uc_gid != mdt->mdt_enable_remote_dir_gid &&
+ mdt->mdt_enable_remote_dir_gid != -1)
+ RETURN(-EPERM);
+
+ /* pobj is master object of parent */
+ pobj = mdt_object_find_check(info, rr->rr_fid1, 0);
+ if (IS_ERR(pobj))
+ RETURN(PTR_ERR(pobj));
+
+ if (unlikely(!info->mti_big_lmm)) {
+ info->mti_big_lmmsize = lmv_mds_md_size(64, LMV_MAGIC);
+ OBD_ALLOC(info->mti_big_lmm, info->mti_big_lmmsize);
+ if (!info->mti_big_lmm)
+ GOTO(put_parent, rc = -ENOMEM);
+ }
+
+ ma->ma_lmv = info->mti_big_lmm;
+ ma->ma_lmv_size = info->mti_big_lmmsize;
+ ma->ma_valid = 0;
+ rc = mdt_stripe_get(info, pobj, ma, XATTR_NAME_LMV);
if (rc)
- GOTO(out_put, rc);
+ GOTO(put_parent, rc);
- RETURN(dir);
-out_put:
- mdt_object_put(info->mti_env, dir);
- return ERR_PTR(rc);
+ /* lock parent object */
+ lhp = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_reg_init(lhp, LCK_PW);
+ rc = mdt_migrate_parent_lock(info, pobj, ma, lhp, peinfo,
+ &parent_slave_locks);
+ if (rc)
+ GOTO(put_parent, rc);
+
+ /*
+ * spobj is the corresponding stripe against name if pobj is striped
+ * directory, which is the real parent, and no need to lock, because
+ * we've taken full lock of pobj.
+ */
+ rc = mdt_migrate_lookup(info, pobj, ma, &rr->rr_name, &spobj, &sobj);
+ if (rc)
+ GOTO(unlock_parent, rc);
+
+ /* lock parents of source links, and revoke LOOKUP lock of links */
+ rc = mdt_lock_links(info, pobj, ma, sobj, &link_locks);
+ if (rc < 0)
+ GOTO(put_source, rc);
+
+ /*
+ * RS_MAX_LOCKS is the limit of number of locks that can be saved along
+ * with one request, if total lock count exceeds this limit, we will
+ * drop all locks after migration, and synchronous device in the end.
+ */
+ do_sync = rc;
+
+ /* TODO: DoM migration is not supported yet */
+ if (S_ISREG(lu_object_attr(&sobj->mot_obj))) {
+ ma->ma_lmm = info->mti_big_lmm;
+ ma->ma_lmm_size = info->mti_big_lmmsize;
+ ma->ma_valid = 0;
+ rc = mdt_stripe_get(info, sobj, ma, XATTR_NAME_LOV);
+ if (rc)
+ GOTO(put_source, rc);
+
+ if (ma->ma_valid & MA_LOV &&
+ mdt_lmm_dom_entry(ma->ma_lmm) != LMM_NO_DOM)
+ GOTO(put_source, rc = -EOPNOTSUPP);
+ }
+
+ /* if migration HSM is allowed */
+ if (!mdt->mdt_opts.mo_migrate_hsm_allowed) {
+ ma->ma_need = MA_HSM;
+ ma->ma_valid = 0;
+ rc = mdt_attr_get_complex(info, sobj, ma);
+ if (rc)
+ GOTO(unlock_links, rc);
+
+ if ((ma->ma_valid & MA_HSM) && ma->ma_hsm.mh_flags != 0)
+ GOTO(unlock_links, rc = -EOPNOTSUPP);
+ }
+
+ /* end lease and close file for regular file */
+ if (info->mti_spec.sp_migrate_close) {
+ /* try to hold open_sem so that nobody else can open the file */
+ if (!down_write_trylock(&sobj->mot_open_sem)) {
+ /* close anyway */
+ mdd_migrate_close(info, sobj);
+ GOTO(unlock_links, rc = -EBUSY);
+ } else {
+ open_sem_locked = true;
+ rc = mdd_migrate_close(info, sobj);
+ if (rc)
+ GOTO(unlock_open_sem, rc);
+ }
+ }
+
+ /* lock source */
+ lhs = &info->mti_lh[MDT_LH_OLD];
+ mdt_lock_reg_init(lhs, LCK_EX);
+ rc = mdt_migrate_object_lock(info, spobj, sobj, lhs, seinfo,
+ &child_slave_locks);
+ if (rc)
+ GOTO(unlock_open_sem, rc);
+
+ /* lock target */
+ tobj = mdt_object_find(env, mdt, rr->rr_fid2);
+ if (IS_ERR(tobj))
+ GOTO(unlock_source, rc = PTR_ERR(tobj));
+
+ lht = &info->mti_lh[MDT_LH_NEW];
+ mdt_lock_reg_init(lht, LCK_EX);
+ rc = mdt_reint_object_lock(info, tobj, lht, MDS_INODELOCK_FULL, true);
+ if (rc)
+ GOTO(put_target, rc);
+
+ /* Don't do lookup sanity check. We know name doesn't exist. */
+ info->mti_spec.sp_cr_lookup = 0;
+ info->mti_spec.sp_feat = &dt_directory_features;
+
+ rc = mdo_migrate(env, mdt_object_child(pobj),
+ mdt_object_child(sobj), &rr->rr_name,
+ mdt_object_child(tobj), &info->mti_spec, ma);
+ EXIT;
+
+ mdt_object_unlock(info, tobj, lht, rc);
+put_target:
+ mdt_object_put(env, tobj);
+unlock_source:
+ mdt_migrate_object_unlock(info, sobj, lhs, seinfo,
+ &child_slave_locks, rc);
+unlock_open_sem:
+ if (open_sem_locked)
+ up_write(&sobj->mot_open_sem);
+unlock_links:
+ mdt_unlock_list(info, &link_locks, rc);
+put_source:
+ mdt_object_put(env, sobj);
+ mdt_object_put(env, spobj);
+unlock_parent:
+ mdt_migrate_object_unlock(info, pobj, lhp, peinfo,
+ &parent_slave_locks, rc);
+put_parent:
+ mdt_object_put(env, pobj);
+
+ if (!rc && do_sync)
+ mdt_device_sync(env, mdt);
+
+ return rc;
}
static int mdt_object_lock_save(struct mdt_thread_info *info,
mdt_counter_incr(req, LPROC_MDT_RENAME);
if (mnew) {
mdt_handle_last_unlink(info, mnew, ma);
- discard = true;
+ discard = mdt_dom_check_for_discard(info, mnew);
}
mdt_rename_counter_tally(info, info->mti_mdt, req,
out_unlock_old:
mdt_object_unlock(info, mold, lh_oldp, rc);
out_put_new:
- if (mnew != NULL) {
- if (discard)
- mdt_dom_check_and_discard(info, mnew);
+ if (mnew != NULL)
mdt_object_put(info->mti_env, mnew);
- }
out_put_old:
mdt_object_put(info->mti_env, mold);
out_unlock_parents:
mdt_object_put(info->mti_env, mtgtdir);
out_put_srcdir:
mdt_object_put(info->mti_env, msrcdir);
+
+ /* If 'discard' is set then new_fid must exits.
+ * DOM data discard need neither object nor lock,
+ * so do this at the end.
+ */
+ if (discard)
+ mdt_dom_discard_data(info, new_fid);
+
return rc;
}
if (!req_is_replay(req)) {
rc = mdt_rename_lock(info, &rename_lh);
if (rc != 0) {
- CERROR("%s: can't lock FS for rename: rc = %d\n",
+ CERROR("%s: can't lock FS for rename: rc = %d\n",
mdt_obd_name(info->mti_mdt), rc);
RETURN(rc);
}
if (rename)
rc = mdt_reint_rename_internal(info, lhc);
else
- rc = mdt_reint_migrate_internal(info, lhc);
+ rc = mdt_reint_migrate_internal(info);
if (lustre_handle_is_used(&rename_lh))
mdt_rename_unlock(&rename_lh);
struct mdt_object *mo;
struct ldlm_lock *lease;
struct mdt_body *repbody;
- struct md_layout_change layout = { 0 };
+ struct md_layout_change layout = { .mlc_mirror_id = rr->rr_mirror_id };
bool lease_broken;
int rc, rc2;
ENTRY;
if (mdt_object_remote(mo))
GOTO(out_obj, rc = -EREMOTE);
- lease = ldlm_handle2lock(rr->rr_handle);
+ lease = ldlm_handle2lock(rr->rr_lease_handle);
if (lease == NULL)
GOTO(out_obj, rc = -ESTALE);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff