int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo, struct md_attr *ma, int flags) { struct mdt_lock_handle *lh; int do_vbr = ma->ma_attr.la_valid & (LA_MODE|LA_UID|LA_GID|LA_FLAGS); __u64 lockpart = MDS_INODELOCK_UPDATE; int rc; ENTRY; /* attr shouldn't be set on remote object */ LASSERT(!mdt_object_remote(mo)); lh = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_reg_init(lh, LCK_PW); /* Even though the new MDT will grant PERM lock to the old * client, but the old client will almost ignore that during * So it needs to revoke both LOOKUP and PERM lock here, so * both new and old client can cancel the dcache */ if (ma->ma_attr.la_valid & (LA_MODE|LA_UID|LA_GID)) lockpart |= MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM; rc = mdt_object_lock(info, mo, lh, lockpart, MDT_LOCAL_LOCK); if (rc != 0) RETURN(rc); if (mdt_object_exists(mo) == 0) GOTO(out_unlock, rc = -ENOENT); /* all attrs are packed into mti_attr in unpack_setattr */ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_SETATTR_WRITE); /* This is only for set ctime when rename's source is on remote MDS. */ if (unlikely(ma->ma_attr.la_valid == LA_CTIME)) ma->ma_attr_flags |= MDS_VTX_BYPASS; /* VBR: update version if attr changed are important for recovery */ if (do_vbr) { /* update on-disk version of changed object */ info->mti_mos = mo; rc = mdt_version_get_check_save(info, mo, 0); if (rc) GOTO(out_unlock, rc); } /* all attrs are packed into mti_attr in unpack_setattr */ rc = mo_attr_set(info->mti_env, mdt_object_child(mo), ma); if (rc != 0) GOTO(out_unlock, rc); EXIT; out_unlock: mdt_object_unlock(info, mo, lh, rc); return rc; }
/** * Retrieve the current HSM flags, archive id and undergoing HSM requests for * the fid provided in RPC body. * * Current requests are read from coordinator states. * * This is MDS_HSM_STATE_GET RPC handler. */ int mdt_hsm_state_get(struct tgt_session_info *tsi) { struct mdt_thread_info *info = tsi2mdt_info(tsi); struct mdt_object *obj = info->mti_object; struct md_attr *ma = &info->mti_attr; struct hsm_user_state *hus; struct mdt_lock_handle *lh; int rc; ENTRY; if (info->mti_body == NULL || obj == NULL) GOTO(out, rc = -EPROTO); /* Only valid if client is remote */ rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body); if (rc < 0) GOTO(out, rc = err_serious(rc)); lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(lh, LCK_PR); rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP); if (rc < 0) GOTO(out_ucred, rc); ma->ma_valid = 0; ma->ma_need = MA_HSM; rc = mdt_attr_get_complex(info, obj, ma); if (rc) GOTO(out_unlock, rc); hus = req_capsule_server_get(tsi->tsi_pill, &RMF_HSM_USER_STATE); if (hus == NULL) GOTO(out_unlock, rc = -EPROTO); /* Current HSM flags */ hus->hus_states = ma->ma_hsm.mh_flags; hus->hus_archive_id = ma->ma_hsm.mh_arch_id; EXIT; out_unlock: mdt_object_unlock(info, obj, lh, 1); out_ucred: mdt_exit_ucred(info); out: mdt_thread_info_fini(info); return rc; }
/** * Check HSM flags and add HS_DIRTY flag if relevant. * * A file could be set dirty only if it has a copy in the backend (HS_EXISTS) * and is not RELEASED. */ int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo, struct md_attr *ma) { int rc; ENTRY; /* If the file was modified, add the dirty flag */ ma->ma_need = MA_HSM; rc = mdt_attr_get_complex(info, mo, ma); if (rc) { CERROR("file attribute read error for "DFID": %d.\n", PFID(mdt_object_fid(mo)), rc); RETURN(rc); } /* If an up2date copy exists in the backend, add dirty flag */ if ((ma->ma_valid & MA_HSM) && (ma->ma_hsm.mh_flags & HS_EXISTS) && !(ma->ma_hsm.mh_flags & (HS_DIRTY|HS_RELEASED))) { struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD]; ma->ma_hsm.mh_flags |= HS_DIRTY; mdt_lock_reg_init(lh, LCK_PW); rc = mdt_object_lock(info, mo, lh, MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK); if (rc != 0) RETURN(rc); rc = mdt_hsm_attr_set(info, mo, &ma->ma_hsm); if (rc) CERROR("file attribute change error for "DFID": %d\n", PFID(mdt_object_fid(mo)), rc); mdt_object_unlock(info, mo, lh, rc); } RETURN(rc); }
/** * Change HSM state and archive number of a file. * * Archive number is changed iif the value is not 0. * The new flagset that will be computed should result in a coherent state. * This function checks that flags are compatible. * * This is MDS_HSM_STATE_SET RPC handler. */ int mdt_hsm_state_set(struct tgt_session_info *tsi) { struct mdt_thread_info *info = tsi2mdt_info(tsi); struct mdt_object *obj = info->mti_object; struct md_attr *ma = &info->mti_attr; struct hsm_state_set *hss; struct mdt_lock_handle *lh; int rc; __u64 flags; ENTRY; hss = req_capsule_client_get(info->mti_pill, &RMF_HSM_STATE_SET); if (info->mti_body == NULL || obj == NULL || hss == NULL) GOTO(out, rc = -EPROTO); /* Only valid if client is remote */ rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body); if (rc < 0) GOTO(out, rc = err_serious(rc)); lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(lh, LCK_PW); rc = mdt_object_lock(info, obj, lh, MDS_INODELOCK_LOOKUP | MDS_INODELOCK_XATTR); if (rc < 0) GOTO(out_ucred, rc); /* Detect out-of range masks */ if ((hss->hss_setmask | hss->hss_clearmask) & ~HSM_FLAGS_MASK) { CDEBUG(D_HSM, "Incompatible masks provided (set "LPX64 ", clear "LPX64") vs supported set (%#x).\n", hss->hss_setmask, hss->hss_clearmask, HSM_FLAGS_MASK); GOTO(out_unlock, rc = -EINVAL); } /* Non-root users are forbidden to set or clear flags which are * NOT defined in HSM_USER_MASK. */ if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) && !md_capable(mdt_ucred(info), CFS_CAP_SYS_ADMIN)) { CDEBUG(D_HSM, "Incompatible masks provided (set "LPX64 ", clear "LPX64") vs unprivileged set (%#x).\n", hss->hss_setmask, hss->hss_clearmask, HSM_USER_MASK); GOTO(out_unlock, rc = -EPERM); } /* Read current HSM info */ ma->ma_valid = 0; ma->ma_need = MA_HSM; rc = mdt_attr_get_complex(info, obj, ma); if (rc) GOTO(out_unlock, rc); /* Change HSM flags depending on provided masks */ if (hss->hss_valid & HSS_SETMASK) ma->ma_hsm.mh_flags |= hss->hss_setmask; if (hss->hss_valid & HSS_CLEARMASK) ma->ma_hsm.mh_flags &= ~hss->hss_clearmask; /* Change archive_id if provided. */ if (hss->hss_valid & HSS_ARCHIVE_ID) { if (!(ma->ma_hsm.mh_flags & HS_EXISTS)) { CDEBUG(D_HSM, "Could not set an archive number for " DFID "if HSM EXISTS flag is not set.\n", PFID(&info->mti_body->mbo_fid1)); GOTO(out_unlock, rc); } /* Detect out-of range archive id */ if (hss->hss_archive_id > LL_HSM_MAX_ARCHIVE) { CDEBUG(D_HSM, "archive id %u exceeds maximum %zu.\n", hss->hss_archive_id, LL_HSM_MAX_ARCHIVE); GOTO(out_unlock, rc = -EINVAL); } ma->ma_hsm.mh_arch_id = hss->hss_archive_id; } /* Check for inconsistant HSM flagset. * DIRTY without EXISTS: no dirty if no archive was created. * DIRTY and RELEASED: a dirty file could not be released. * RELEASED without ARCHIVED: do not release a non-archived file. * LOST without ARCHIVED: cannot lost a non-archived file. */ flags = ma->ma_hsm.mh_flags; if ((flags & HS_DIRTY && !(flags & HS_EXISTS)) || (flags & HS_RELEASED && flags & HS_DIRTY) || (flags & HS_RELEASED && !(flags & HS_ARCHIVED)) || (flags & HS_LOST && !(flags & HS_ARCHIVED))) { CDEBUG(D_HSM, "Incompatible flag change on "DFID "flags="LPX64"\n", PFID(&info->mti_body->mbo_fid1), flags); GOTO(out_unlock, rc = -EINVAL); } /* Save the modified flags */ rc = mdt_hsm_attr_set(info, obj, &ma->ma_hsm); if (rc) GOTO(out_unlock, rc); EXIT; out_unlock: mdt_object_unlock(info, obj, lh, 1); out_ucred: mdt_exit_ucred(info); out: mdt_thread_info_fini(info); return rc; }
/* * VBR: save versions in reply: 0 - parent; 1 - child by fid; 2 - target by * name. */ static int mdt_reint_link(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct mdt_object *ms; struct mdt_object *mp; struct mdt_lock_handle *lhs; struct mdt_lock_handle *lhp; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "link "DFID" to "DFID"/%s", PFID(rr->rr_fid1), PFID(rr->rr_fid2), rr->rr_name); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_LINK)) RETURN(err_serious(-ENOENT)); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); /* Invalid case so return error immediately instead of * processing it */ if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) RETURN(-EPERM); /* step 1: find & lock the target parent dir */ lhp = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lhp, LCK_PW, rr->rr_name, rr->rr_namelen); mp = mdt_object_find_lock(info, rr->rr_fid2, lhp, MDS_INODELOCK_UPDATE); if (IS_ERR(mp)) RETURN(PTR_ERR(mp)); if (mdt_object_obf(mp)) GOTO(out_unlock_parent, rc = -EPERM); rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(out_unlock_parent, rc); /* step 2: find & lock the source */ lhs = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(lhs, LCK_EX); ms = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(ms)) GOTO(out_unlock_parent, rc = PTR_ERR(ms)); if (mdt_object_remote(ms)) { mdt_object_put(info->mti_env, ms); CERROR("Target directory "DFID" is on another MDT\n", PFID(rr->rr_fid1)); GOTO(out_unlock_parent, rc = -EXDEV); } rc = mdt_object_lock(info, ms, lhs, MDS_INODELOCK_UPDATE, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, ms); GOTO(out_unlock_parent, rc); } /* step 3: link it */ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_LINK_WRITE); info->mti_mos = ms; rc = mdt_version_get_check_save(info, ms, 1); if (rc) GOTO(out_unlock_child, rc); lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); /** check target version by name during replay */ rc = mdt_lookup_version_check(info, mp, lname, &info->mti_tmp_fid1, 2); if (rc != 0 && rc != -ENOENT) GOTO(out_unlock_child, rc); /* save version of file name for replay, it must be ENOENT here */ if (!req_is_replay(mdt_info_req(info))) { info->mti_ver[2] = ENOENT_VERSION; mdt_version_save(mdt_info_req(info), info->mti_ver[2], 2); } rc = mdo_link(info->mti_env, mdt_object_child(mp), mdt_object_child(ms), lname, ma); if (rc == 0) mdt_counter_incr(req, LPROC_MDT_LINK); EXIT; out_unlock_child: mdt_object_unlock_put(info, ms, lhs, rc); out_unlock_parent: mdt_object_unlock_put(info, mp, lhp, rc); return rc; }
/* * VBR: save parent version in reply and child version getting by its name. * Version of child is getting and checking during its lookup. If */ static int mdt_reint_unlink(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct lu_fid *child_fid = &info->mti_tmp_fid1; struct mdt_object *mp; struct mdt_object *mc; struct mdt_lock_handle *parent_lh; struct mdt_lock_handle *child_lh; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) RETURN(err_serious(-ENOENT)); /* * step 1: Found the parent. */ mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(mp)) { rc = PTR_ERR(mp); GOTO(out, rc); } if (mdt_object_obf(mp)) GOTO(put_parent, rc = -EPERM); parent_lh = &info->mti_lh[MDT_LH_PARENT]; lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); if (mdt_object_remote(mp)) { mdt_lock_reg_init(parent_lh, LCK_EX); rc = mdt_remote_object_lock(info, mp, &parent_lh->mlh_rreg_lh, parent_lh->mlh_rreg_mode, MDS_INODELOCK_UPDATE); if (rc != ELDLM_OK) GOTO(put_parent, rc); } else { mdt_lock_pdo_init(parent_lh, LCK_PW, rr->rr_name, rr->rr_namelen); rc = mdt_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE, MDT_LOCAL_LOCK); if (rc) GOTO(put_parent, rc); rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(unlock_parent, rc); } /* step 2: find & lock the child */ /* lookup child object along with version checking */ fid_zero(child_fid); rc = mdt_lookup_version_check(info, mp, lname, child_fid, 1); if (rc != 0) GOTO(unlock_parent, rc); mdt_reint_init_ma(info, ma); /* We will lock the child regardless it is local or remote. No harm. */ mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid); if (IS_ERR(mc)) GOTO(unlock_parent, rc = PTR_ERR(mc)); child_lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(child_lh, LCK_EX); if (mdt_object_remote(mc)) { struct mdt_body *repbody; if (!fid_is_zero(rr->rr_fid2)) { CDEBUG(D_INFO, "%s: name %s can not find "DFID"\n", mdt2obd_dev(info->mti_mdt)->obd_name, (char *)rr->rr_name, PFID(mdt_object_fid(mc))); GOTO(unlock_parent, rc = -ENOENT); } CDEBUG(D_INFO, "%s: name %s: "DFID" is another MDT\n", mdt2obd_dev(info->mti_mdt)->obd_name, (char *)rr->rr_name, PFID(mdt_object_fid(mc))); if (info->mti_spec.sp_rm_entry) { struct lu_ucred *uc = mdt_ucred(info); if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) { CERROR("%s: unlink remote entry is only " "permitted for administrator: rc = %d\n", mdt2obd_dev(info->mti_mdt)->obd_name, -EPERM); GOTO(unlock_parent, rc = -EPERM); } ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), NULL, lname, ma); mdt_object_put(info->mti_env, mc); GOTO(unlock_parent, rc); } /* Revoke the LOOKUP lock of the remote object granted by * this MDT. Since the unlink will happen on another MDT, * it will release the LOOKUP lock right away. Then What * would happen if another client try to grab the LOOKUP * lock at the same time with unlink XXX */ mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP, MDT_CROSS_LOCK); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); LASSERT(repbody != NULL); repbody->fid1 = *mdt_object_fid(mc); repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); mdt_object_unlock_put(info, mc, child_lh, rc); GOTO(unlock_parent, rc = -EREMOTE); } else if (info->mti_spec.sp_rm_entry) { CERROR("%s: lfs rmdir should not be used on local dir %s\n", mdt2obd_dev(info->mti_mdt)->obd_name, (char *)rr->rr_name); mdt_object_put(info->mti_env, mc); GOTO(unlock_parent, rc = -EPERM); } rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_FULL, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mc); GOTO(unlock_parent, rc); } mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_UNLINK_WRITE); /* save version when object is locked */ mdt_version_get_save(info, mc, 1); /* * Now we can only make sure we need MA_INODE, in mdd layer, will check * whether need MA_LOV and MA_COOKIE. */ ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), mdt_object_child(mc), lname, ma); if (rc == 0 && !lu_object_is_dying(&mc->mot_header)) rc = mdt_attr_get_complex(info, mc, ma); if (rc == 0) mdt_handle_last_unlink(info, mc, ma); if (ma->ma_valid & MA_INODE) { switch (ma->ma_attr.la_mode & S_IFMT) { case S_IFDIR: mdt_counter_incr(req, LPROC_MDT_RMDIR); break; case S_IFREG: case S_IFLNK: case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: mdt_counter_incr(req, LPROC_MDT_UNLINK); break; default: LASSERTF(0, "bad file type %o unlinking\n", ma->ma_attr.la_mode); } } EXIT; mdt_object_unlock_put(info, mc, child_lh, rc); unlock_parent: mdt_object_unlock(info, mp, parent_lh, rc); put_parent: mdt_object_put(info->mti_env, mp); out: return rc; }
/* * VBR: rename versions in reply: 0 - src parent; 1 - tgt parent; * 2 - src child; 3 - tgt child. * Update on disk version of src child. */ static int mdt_reint_rename(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct md_attr *ma = &info->mti_attr; struct ptlrpc_request *req = mdt_info_req(info); struct mdt_object *msrcdir; struct mdt_object *mtgtdir; struct mdt_object *mold; struct mdt_object *mnew = NULL; struct mdt_lock_handle *lh_srcdirp; struct mdt_lock_handle *lh_tgtdirp; struct mdt_lock_handle *lh_oldp; struct mdt_lock_handle *lh_newp; struct lu_fid *old_fid = &info->mti_tmp_fid1; struct lu_fid *new_fid = &info->mti_tmp_fid2; struct lustre_handle rename_lh = { 0 }; struct lu_name slname = { 0 }; struct lu_name *lname; int rc; ENTRY; if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); DEBUG_REQ(D_INODE, req, "rename "DFID"/%s to "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name, PFID(rr->rr_fid2), rr->rr_tgt); rc = mdt_rename_lock(info, &rename_lh); if (rc) { CERROR("Can't lock FS for rename, rc %d\n", rc); RETURN(rc); } lh_newp = &info->mti_lh[MDT_LH_NEW]; /* step 1: lock the source dir. */ lh_srcdirp = &info->mti_lh[MDT_LH_PARENT]; mdt_lock_pdo_init(lh_srcdirp, LCK_PW, rr->rr_name, rr->rr_namelen); msrcdir = mdt_object_find_lock(info, rr->rr_fid1, lh_srcdirp, MDS_INODELOCK_UPDATE); if (IS_ERR(msrcdir)) GOTO(out_rename_lock, rc = PTR_ERR(msrcdir)); if (mdt_object_obf(msrcdir)) GOTO(out_unlock_source, rc = -EPERM); rc = mdt_version_get_check_save(info, msrcdir, 0); if (rc) GOTO(out_unlock_source, rc); /* step 2: find & lock the target dir. */ lh_tgtdirp = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_pdo_init(lh_tgtdirp, LCK_PW, rr->rr_tgt, rr->rr_tgtlen); if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) { mdt_object_get(info->mti_env, msrcdir); mtgtdir = msrcdir; if (lh_tgtdirp->mlh_pdo_hash != lh_srcdirp->mlh_pdo_hash) { rc = mdt_pdir_hash_lock(info, lh_tgtdirp, mtgtdir, MDS_INODELOCK_UPDATE); if (rc) GOTO(out_unlock_source, rc); OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK2, 10); } } else { mtgtdir = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2); if (IS_ERR(mtgtdir)) GOTO(out_unlock_source, rc = PTR_ERR(mtgtdir)); if (mdt_object_obf(mtgtdir)) GOTO(out_put_target, rc = -EPERM); /* check early, the real version will be saved after locking */ rc = mdt_version_get_check(info, mtgtdir, 1); if (rc) GOTO(out_put_target, rc); if (unlikely(mdt_object_remote(mtgtdir))) { CDEBUG(D_INFO, "Source dir "DFID" target dir "DFID "on different MDTs\n", PFID(rr->rr_fid1), PFID(rr->rr_fid2)); GOTO(out_put_target, rc = -EXDEV); } else { if (likely(mdt_object_exists(mtgtdir))) { /* we lock the target dir if it is local */ rc = mdt_object_lock(info, mtgtdir, lh_tgtdirp, MDS_INODELOCK_UPDATE, MDT_LOCAL_LOCK); if (rc != 0) GOTO(out_put_target, rc); /* get and save correct version after locking */ mdt_version_get_save(info, mtgtdir, 1); } else { GOTO(out_put_target, rc = -ESTALE); } } } /* step 3: find & lock the old object. */ lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); mdt_name_copy(&slname, lname); fid_zero(old_fid); rc = mdt_lookup_version_check(info, msrcdir, &slname, old_fid, 2); if (rc != 0) GOTO(out_unlock_target, rc); if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2)) GOTO(out_unlock_target, rc = -EINVAL); mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid); if (IS_ERR(mold)) GOTO(out_unlock_target, rc = PTR_ERR(mold)); if (mdt_object_remote(mold)) { mdt_object_put(info->mti_env, mold); CDEBUG(D_INFO, "Source child "DFID" is on another MDT\n", PFID(old_fid)); GOTO(out_unlock_target, rc = -EXDEV); } if (mdt_object_obf(mold)) { mdt_object_put(info->mti_env, mold); GOTO(out_unlock_target, rc = -EPERM); } lh_oldp = &info->mti_lh[MDT_LH_OLD]; mdt_lock_reg_init(lh_oldp, LCK_EX); rc = mdt_object_lock(info, mold, lh_oldp, MDS_INODELOCK_LOOKUP, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mold); GOTO(out_unlock_target, rc); } info->mti_mos = mold; /* save version after locking */ mdt_version_get_save(info, mold, 2); mdt_set_capainfo(info, 2, old_fid, BYPASS_CAPA); /* step 4: find & lock the new object. */ /* new target object may not exist now */ lname = mdt_name(info->mti_env, (char *)rr->rr_tgt, rr->rr_tgtlen); /* lookup with version checking */ fid_zero(new_fid); rc = mdt_lookup_version_check(info, mtgtdir, lname, new_fid, 3); if (rc == 0) { /* the new_fid should have been filled at this moment */ if (lu_fid_eq(old_fid, new_fid)) GOTO(out_unlock_old, rc); if (lu_fid_eq(new_fid, rr->rr_fid1) || lu_fid_eq(new_fid, rr->rr_fid2)) GOTO(out_unlock_old, rc = -EINVAL); mdt_lock_reg_init(lh_newp, LCK_EX); mnew = mdt_object_find(info->mti_env, info->mti_mdt, new_fid); if (IS_ERR(mnew)) GOTO(out_unlock_old, rc = PTR_ERR(mnew)); if (mdt_object_obf(mnew)) { mdt_object_put(info->mti_env, mnew); GOTO(out_unlock_old, rc = -EPERM); } if (mdt_object_remote(mnew)) { mdt_object_put(info->mti_env, mnew); CDEBUG(D_INFO, "src child "DFID" is on another MDT\n", PFID(new_fid)); GOTO(out_unlock_old, rc = -EXDEV); } rc = mdt_object_lock(info, mnew, lh_newp, MDS_INODELOCK_FULL, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mnew); GOTO(out_unlock_old, rc); } /* get and save version after locking */ mdt_version_get_save(info, mnew, 3); mdt_set_capainfo(info, 3, new_fid, BYPASS_CAPA); } else if (rc != -EREMOTE && rc != -ENOENT) { GOTO(out_unlock_old, rc); } else { mdt_enoent_version_save(info, 3); } /* step 5: rename it */ mdt_reint_init_ma(info, ma); mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_RENAME_WRITE); /* Check if @dst is subdir of @src. */ rc = mdt_rename_sanity(info, old_fid); if (rc) GOTO(out_unlock_new, rc); rc = mdo_rename(info->mti_env, mdt_object_child(msrcdir), mdt_object_child(mtgtdir), old_fid, &slname, (mnew ? mdt_object_child(mnew) : NULL), lname, ma); /* handle last link of tgt object */ if (rc == 0) { mdt_counter_incr(req, LPROC_MDT_RENAME); if (mnew) mdt_handle_last_unlink(info, mnew, ma); mdt_rename_counter_tally(info, info->mti_mdt, req, msrcdir, mtgtdir); } EXIT; out_unlock_new: if (mnew) mdt_object_unlock_put(info, mnew, lh_newp, rc); out_unlock_old: mdt_object_unlock_put(info, mold, lh_oldp, rc); out_unlock_target: mdt_object_unlock(info, mtgtdir, lh_tgtdirp, rc); out_put_target: mdt_object_put(info->mti_env, mtgtdir); out_unlock_source: mdt_object_unlock_put(info, msrcdir, lh_srcdirp, rc); out_rename_lock: if (lustre_handle_is_used(&rename_lh)) mdt_rename_unlock(&rename_lh); return rc; }
/* * VBR: save parent version in reply and child version getting by its name. * Version of child is getting and checking during its lookup. If */ static int mdt_reint_unlink(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct lu_fid *child_fid = &info->mti_tmp_fid1; struct mdt_object *mp; struct mdt_object *mc; struct mdt_lock_handle *parent_lh; struct mdt_lock_handle *child_lh; struct lu_name *lname; int rc; int no_name = 0; ENTRY; DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) RETURN(err_serious(-ENOENT)); if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1)) RETURN(-EPERM); /* * step 1: Found the parent. */ mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1); if (IS_ERR(mp)) { rc = PTR_ERR(mp); GOTO(out, rc); } parent_lh = &info->mti_lh[MDT_LH_PARENT]; lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); if (mdt_object_remote(mp)) { mdt_lock_reg_init(parent_lh, LCK_EX); rc = mdt_remote_object_lock(info, mp, &parent_lh->mlh_rreg_lh, parent_lh->mlh_rreg_mode, MDS_INODELOCK_UPDATE); if (rc != ELDLM_OK) GOTO(put_parent, rc); } else { mdt_lock_pdo_init(parent_lh, LCK_PW, rr->rr_name, rr->rr_namelen); rc = mdt_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE, MDT_LOCAL_LOCK); if (rc) GOTO(put_parent, rc); rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(unlock_parent, rc); } /* step 2: find & lock the child */ /* lookup child object along with version checking */ fid_zero(child_fid); rc = mdt_lookup_version_check(info, mp, lname, child_fid, 1); if (rc != 0) { /* Name might not be able to find during resend of * remote unlink, considering following case. * dir_A is a remote directory, the name entry of * dir_A is on MDT0, the directory is on MDT1, * * 1. client sends unlink req to MDT1. * 2. MDT1 sends name delete update to MDT0. * 3. name entry is being deleted in MDT0 synchronously. * 4. MDT1 is restarted. * 5. client resends unlink req to MDT1. So it can not * find the name entry on MDT0 anymore. * In this case, MDT1 only needs to destory the local * directory. * */ if (mdt_object_remote(mp) && rc == -ENOENT && !fid_is_zero(rr->rr_fid2) && lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { no_name = 1; *child_fid = *rr->rr_fid2; } else { GOTO(unlock_parent, rc); } } if (fid_is_obf(child_fid) || fid_is_dot_lustre(child_fid)) GOTO(unlock_parent, rc = -EPERM); mdt_reint_init_ma(info, ma); /* We will lock the child regardless it is local or remote. No harm. */ mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid); if (IS_ERR(mc)) GOTO(unlock_parent, rc = PTR_ERR(mc)); child_lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(child_lh, LCK_EX); if (mdt_object_remote(mc)) { struct mdt_body *repbody; if (!fid_is_zero(rr->rr_fid2)) { CDEBUG(D_INFO, "%s: name %s can not find "DFID"\n", mdt_obd_name(info->mti_mdt), (char *)rr->rr_name, PFID(mdt_object_fid(mc))); GOTO(put_child, rc = -ENOENT); } CDEBUG(D_INFO, "%s: name %s: "DFID" is another MDT\n", mdt_obd_name(info->mti_mdt), (char *)rr->rr_name, PFID(mdt_object_fid(mc))); if (!mdt_is_dne_client(req->rq_export)) /* Return -EIO for old client */ GOTO(put_child, rc = -EIO); if (info->mti_spec.sp_rm_entry) { struct lu_ucred *uc = mdt_ucred(info); if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) { CERROR("%s: unlink remote entry is only " "permitted for administrator: rc = %d\n", mdt_obd_name(info->mti_mdt), -EPERM); GOTO(put_child, rc = -EPERM); } ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), NULL, lname, ma, no_name); GOTO(put_child, rc); } /* Revoke the LOOKUP lock of the remote object granted by * this MDT. Since the unlink will happen on another MDT, * it will release the LOOKUP lock right away. Then What * would happen if another client try to grab the LOOKUP * lock at the same time with unlink XXX */ mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP, MDT_CROSS_LOCK); repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); LASSERT(repbody != NULL); repbody->fid1 = *mdt_object_fid(mc); repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS); GOTO(unlock_child, rc = -EREMOTE); } else if (info->mti_spec.sp_rm_entry) { rc = -EPERM; CDEBUG(D_INFO, "%s: no rm_entry on local dir '%s': rc = %d\n", mdt_obd_name(info->mti_mdt), (char *)rr->rr_name, rc); GOTO(put_child, rc); } /* We used to acquire MDS_INODELOCK_FULL here but we can't do * this now because a running HSM restore on the child (unlink * victim) will hold the layout lock. See LU-4002. */ rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE, MDT_CROSS_LOCK); if (rc != 0) GOTO(put_child, rc); mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_UNLINK_WRITE); /* save version when object is locked */ mdt_version_get_save(info, mc, 1); /* * Now we can only make sure we need MA_INODE, in mdd layer, will check * whether need MA_LOV and MA_COOKIE. */ ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); mutex_lock(&mc->mot_lov_mutex); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), mdt_object_child(mc), lname, ma, no_name); mutex_unlock(&mc->mot_lov_mutex); if (rc == 0 && !lu_object_is_dying(&mc->mot_header)) rc = mdt_attr_get_complex(info, mc, ma); if (rc == 0) mdt_handle_last_unlink(info, mc, ma); if (ma->ma_valid & MA_INODE) { switch (ma->ma_attr.la_mode & S_IFMT) { case S_IFDIR: mdt_counter_incr(req, LPROC_MDT_RMDIR); break; case S_IFREG: case S_IFLNK: case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: mdt_counter_incr(req, LPROC_MDT_UNLINK); break; default: LASSERTF(0, "bad file type %o unlinking\n", ma->ma_attr.la_mode); } } EXIT; unlock_child: mdt_object_unlock(info, mc, child_lh, rc); put_child: 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); out: return rc; }
/* * VBR: save parent version in reply and child version getting by its name. * Version of child is getting and checking during its lookup. If */ static int mdt_reint_unlink(struct mdt_thread_info *info, struct mdt_lock_handle *lhc) { struct mdt_reint_record *rr = &info->mti_rr; struct ptlrpc_request *req = mdt_info_req(info); struct md_attr *ma = &info->mti_attr; struct lu_fid *child_fid = &info->mti_tmp_fid1; struct mdt_object *mp; struct mdt_object *mc; struct mdt_lock_handle *parent_lh; struct mdt_lock_handle *child_lh; struct lu_name *lname; int rc; ENTRY; DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1), rr->rr_name); if (info->mti_dlm_req) ldlm_request_cancel(req, info->mti_dlm_req, 0); if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK)) RETURN(err_serious(-ENOENT)); /* * step 1: lock the parent. Note, this may be child in case of * remote operation denoted by ->mti_cross_ref flag. */ parent_lh = &info->mti_lh[MDT_LH_PARENT]; if (info->mti_cross_ref) { /* * Init reg lock for cross ref case when we need to do only * ref del locally. */ mdt_lock_reg_init(parent_lh, LCK_PW); } else { mdt_lock_pdo_init(parent_lh, LCK_PW, rr->rr_name, rr->rr_namelen); } mp = mdt_object_find_lock(info, rr->rr_fid1, parent_lh, MDS_INODELOCK_UPDATE, MDT_OBJ_MUST_EXIST); if (IS_ERR(mp)) { rc = PTR_ERR(mp); /* errors are possible here in cross-ref cases, see below */ if (info->mti_cross_ref) rc = 0; GOTO(out, rc); } rc = mdt_version_get_check_save(info, mp, 0); if (rc) GOTO(out_unlock_parent, rc); mdt_reint_init_ma(info, ma); if (!ma->ma_lmm || !ma->ma_cookie) GOTO(out_unlock_parent, rc = -EINVAL); if (info->mti_cross_ref) { /* * Remote partial operation. It is possible that replay may * happen on parent MDT and this operation will be repeated. * Therefore the object absense is allowed case and nothing * should be done here. */ if (mdt_object_exists(mp) > 0) { mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA); rc = mo_ref_del(info->mti_env, mdt_object_child(mp), ma); if (rc == 0) mdt_handle_last_unlink(info, mp, ma); } else rc = 0; GOTO(out_unlock_parent, rc); } /* step 2: find & lock the child */ lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen); /* lookup child object along with version checking */ rc = mdt_lookup_version_check(info, mp, lname, child_fid, 1); if (rc != 0) GOTO(out_unlock_parent, rc); /* We will lock the child regardless it is local or remote. No harm. */ mc = mdt_object_find(info->mti_env, info->mti_mdt, child_fid, MDT_OBJ_MUST_EXIST); if (IS_ERR(mc)) GOTO(out_unlock_parent, rc = PTR_ERR(mc)); child_lh = &info->mti_lh[MDT_LH_CHILD]; mdt_lock_reg_init(child_lh, LCK_EX); rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_FULL, MDT_CROSS_LOCK); if (rc != 0) { mdt_object_put(info->mti_env, mc); GOTO(out_unlock_parent, rc); } mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom, OBD_FAIL_MDS_REINT_UNLINK_WRITE); /* save version when object is locked */ mdt_version_get_save(info, mc, 1); /* * Now we can only make sure we need MA_INODE, in mdd layer, will check * whether need MA_LOV and MA_COOKIE. */ ma->ma_need = MA_INODE; ma->ma_valid = 0; mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA); rc = mdo_unlink(info->mti_env, mdt_object_child(mp), mdt_object_child(mc), lname, ma); if (rc == 0) mdt_handle_last_unlink(info, mc, ma); if (ma->ma_valid & MA_INODE) { switch (ma->ma_attr.la_mode & S_IFMT) { case S_IFDIR: mdt_counter_incr(req->rq_export, LPROC_MDT_RMDIR); break; case S_IFREG: case S_IFLNK: case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: mdt_counter_incr(req->rq_export, LPROC_MDT_UNLINK); break; default: LASSERTF(0, "bad file type %o unlinking\n", ma->ma_attr.la_mode); } } EXIT; mdt_object_unlock_put(info, mc, child_lh, rc); out_unlock_parent: mdt_object_unlock_put(info, mp, parent_lh, rc); out: return rc; }