-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Yury Umanets <umka@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
#include "mdt_internal.h"
-#include "lu_time.h"
+#include <lustre_lmv.h>
static inline void mdt_reint_init_ma(struct mdt_thread_info *info,
struct md_attr *ma)
{
- ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
- ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
- &RMF_MDT_MD, RCL_SERVER);
-
- ma->ma_cookie = req_capsule_server_get(info->mti_pill,
- &RMF_LOGCOOKIES);
- ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
- &RMF_LOGCOOKIES,
- RCL_SERVER);
-
- ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
+ ma->ma_need = MA_INODE;
ma->ma_valid = 0;
}
if (repbody->valid & OBD_MD_FLMDSCAPA)
RETURN(rc);
- if (rc == 0 && info->mti_mdt->mdt_opts.mo_mds_capa &&
- info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
+ if (rc == 0 && info->mti_mdt->mdt_lut.lut_mds_capa &&
+ exp_connect_flags(info->mti_exp) & OBD_CONNECT_MDS_CAPA) {
struct lustre_capa *capa;
capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
RETURN(rc);
}
-int mdt_version_get_check(struct mdt_thread_info *info, int index)
+/**
+ * Get version of object by fid.
+ *
+ * Return real version or ENOENT_VERSION if object doesn't exist
+ */
+static void mdt_obj_version_get(struct mdt_thread_info *info,
+ struct mdt_object *o, __u64 *version)
{
- /** version recovery */
- struct md_object *mo;
- struct ptlrpc_request *req = mdt_info_req(info);
- __u64 curr_version, *pre_versions;
+ LASSERT(o);
+ if (mdt_object_exists(o) && !mdt_object_remote(o) &&
+ !fid_is_obf(mdt_object_fid(o)))
+ *version = dt_version_get(info->mti_env, mdt_obj2dt(o));
+ else
+ *version = ENOENT_VERSION;
+ CDEBUG(D_INODE, "FID "DFID" version is "LPX64"\n",
+ PFID(mdt_object_fid(o)), *version);
+}
+
+/**
+ * Check version is correct.
+ *
+ * Should be called only during replay.
+ */
+static int mdt_version_check(struct ptlrpc_request *req,
+ __u64 version, int idx)
+{
+ __u64 *pre_ver = lustre_msg_get_versions(req->rq_reqmsg);
ENTRY;
if (!exp_connect_vbr(req->rq_export))
RETURN(0);
- LASSERT(info->mti_mos[index]);
- if (mdt_object_exists(info->mti_mos[index]) == 0)
- RETURN(-ESTALE);
- mo = mdt_object_child(info->mti_mos[index]);
-
- curr_version = mo_version_get(info->mti_env, mo);
- CDEBUG(D_INODE, "Version is "LPX64"\n", curr_version);
+ LASSERT(req_is_replay(req));
/** VBR: version is checked always because costs nothing */
- if (lustre_msg_get_transno(req->rq_reqmsg) != 0) {
- pre_versions = lustre_msg_get_versions(req->rq_reqmsg);
- LASSERT(index < PTLRPC_NUM_VERSIONS);
- /** Sanity check for malformed buffers */
- if (pre_versions == NULL) {
- CERROR("No versions in request buffer\n");
- cfs_spin_lock(&req->rq_export->exp_lock);
- req->rq_export->exp_vbr_failed = 1;
- cfs_spin_unlock(&req->rq_export->exp_lock);
- RETURN(-EOVERFLOW);
- } else if (pre_versions[index] != curr_version) {
- CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
- pre_versions[index], curr_version);
- cfs_spin_lock(&req->rq_export->exp_lock);
- req->rq_export->exp_vbr_failed = 1;
- cfs_spin_unlock(&req->rq_export->exp_lock);
- RETURN(-EOVERFLOW);
+ LASSERT(idx < PTLRPC_NUM_VERSIONS);
+ /** Sanity check for malformed buffers */
+ if (pre_ver == NULL) {
+ CERROR("No versions in request buffer\n");
+ spin_lock(&req->rq_export->exp_lock);
+ req->rq_export->exp_vbr_failed = 1;
+ spin_unlock(&req->rq_export->exp_lock);
+ RETURN(-EOVERFLOW);
+ } else if (pre_ver[idx] != version) {
+ CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
+ pre_ver[idx], version);
+ spin_lock(&req->rq_export->exp_lock);
+ req->rq_export->exp_vbr_failed = 1;
+ spin_unlock(&req->rq_export->exp_lock);
+ RETURN(-EOVERFLOW);
+ }
+ RETURN(0);
+}
+
+/**
+ * Save pre-versions in reply.
+ */
+static void mdt_version_save(struct ptlrpc_request *req, __u64 version,
+ int idx)
+{
+ __u64 *reply_ver;
+
+ if (!exp_connect_vbr(req->rq_export))
+ return;
+
+ LASSERT(!req_is_replay(req));
+ LASSERT(req->rq_repmsg != NULL);
+ reply_ver = lustre_msg_get_versions(req->rq_repmsg);
+ if (reply_ver)
+ reply_ver[idx] = version;
+}
+
+/**
+ * Save enoent version, it is needed when it is obvious that object doesn't
+ * exist, e.g. child during create.
+ */
+static void mdt_enoent_version_save(struct mdt_thread_info *info, int idx)
+{
+ /* save version of file name for replay, it must be ENOENT here */
+ if (!req_is_replay(mdt_info_req(info))) {
+ info->mti_ver[idx] = ENOENT_VERSION;
+ mdt_version_save(mdt_info_req(info), info->mti_ver[idx], idx);
+ }
+}
+
+/**
+ * Get version from disk and save in reply buffer.
+ *
+ * Versions are saved in reply only during normal operations not replays.
+ */
+void mdt_version_get_save(struct mdt_thread_info *info,
+ struct mdt_object *mto, int idx)
+{
+ /* don't save versions during replay */
+ if (!req_is_replay(mdt_info_req(info))) {
+ mdt_obj_version_get(info, mto, &info->mti_ver[idx]);
+ mdt_version_save(mdt_info_req(info), info->mti_ver[idx], idx);
+ }
+}
+
+/**
+ * Get version from disk and check it, no save in reply.
+ */
+int mdt_version_get_check(struct mdt_thread_info *info,
+ struct mdt_object *mto, int idx)
+{
+ /* only check versions during replay */
+ if (!req_is_replay(mdt_info_req(info)))
+ return 0;
+
+ mdt_obj_version_get(info, mto, &info->mti_ver[idx]);
+ return mdt_version_check(mdt_info_req(info), info->mti_ver[idx], idx);
+}
+
+/**
+ * Get version from disk and check if recovery or just save.
+ */
+int mdt_version_get_check_save(struct mdt_thread_info *info,
+ struct mdt_object *mto, int idx)
+{
+ int rc = 0;
+
+ mdt_obj_version_get(info, mto, &info->mti_ver[idx]);
+ if (req_is_replay(mdt_info_req(info)))
+ rc = mdt_version_check(mdt_info_req(info), info->mti_ver[idx],
+ idx);
+ else
+ mdt_version_save(mdt_info_req(info), info->mti_ver[idx], idx);
+ return rc;
+}
+
+/**
+ * Lookup with version checking.
+ *
+ * This checks version of 'name'. Many reint functions uses 'name' for child not
+ * FID, therefore we need to get object by name and check its version.
+ */
+int mdt_lookup_version_check(struct mdt_thread_info *info,
+ struct mdt_object *p, const struct lu_name *lname,
+ struct lu_fid *fid, int idx)
+{
+ int rc, vbrc;
+
+ rc = mdo_lookup(info->mti_env, mdt_object_child(p), lname, fid,
+ &info->mti_spec);
+ /* Check version only during replay */
+ if (!req_is_replay(mdt_info_req(info)))
+ return rc;
+
+ info->mti_ver[idx] = ENOENT_VERSION;
+ if (rc == 0) {
+ struct mdt_object *child;
+ child = mdt_object_find(info->mti_env, info->mti_mdt, fid);
+ if (likely(!IS_ERR(child))) {
+ mdt_obj_version_get(info, child, &info->mti_ver[idx]);
+ mdt_object_put(info->mti_env, child);
}
}
- /** save pre-versions in reply */
- LASSERT(req->rq_repmsg != NULL);
- pre_versions = lustre_msg_get_versions(req->rq_repmsg);
- if (pre_versions)
- pre_versions[index] = curr_version;
- RETURN(0);
+ vbrc = mdt_version_check(mdt_info_req(info), info->mti_ver[idx], idx);
+ return vbrc ? vbrc : rc;
+
}
+/**
+ * mdt_remote_permission: Check whether the remote operation is permitted,
+ *
+ * Before we implement async cross-MDT updates (DNE phase 2). There are a few
+ * limitations here:
+ *
+ * 1.Only sysadmin can create remote directory and striped directory and
+ * migrate directory now, unless
+ * lctl set_param mdt.*.enable_remote_dir_gid=allow_gid.
+ * 2.Remote directory can only be created on MDT0, unless
+ * lctl set_param mdt.*.enable_remote_dir = 1
+ * 3.Only new clients can access remote dir( >= 2.4) and striped dir(>= 2.6),
+ * old client will return -ENOTSUPP.
+ *
+ * XXX these check are only needed for remote synchronization, once async
+ * update is supported, these check will be removed.
+ *
+ * param[in]info: execution environment.
+ * param[in]parent: the directory of this operation.
+ * param[in]child: the child of this operation.
+ *
+ * retval = 0 remote operation is allowed.
+ * < 0 remote operation is denied.
+ */
+static int mdt_remote_permission(struct mdt_thread_info *info,
+ struct mdt_object *parent,
+ struct mdt_object *child)
+{
+ struct mdt_device *mdt = info->mti_mdt;
+ struct lu_ucred *uc = mdt_ucred(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;
+
+ /* Only check create remote directory, striped directory and
+ * migration */
+ if (mdt_object_remote(parent) == 0 && mdt_object_remote(child) == 0 &&
+ !(S_ISDIR(attr->la_mode) && spec->u.sp_ea.eadata != NULL &&
+ spec->u.sp_ea.eadatalen != 0) &&
+ info->mti_rr.rr_opcode != REINT_MIGRATE)
+ return 0;
+
+ 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;
+ }
+
+ if (mdt->mdt_enable_remote_dir == 0) {
+ struct seq_server_site *ss = mdt_seq_site(mdt);
+ struct lu_seq_range range = { 0 };
+ int rc;
+
+ fld_range_set_type(&range, LU_SEQ_RANGE_MDT);
+ rc = fld_server_lookup(info->mti_env, ss->ss_server_fld,
+ fid_seq(mdt_object_fid(parent)), &range);
+ if (rc != 0)
+ return rc;
+
+ if (range.lsr_index != 0)
+ return -EPERM;
+ }
+
+ if (!mdt_is_dne_client(exp))
+ return -ENOTSUPP;
+
+ if (S_ISDIR(attr->la_mode) && spec->u.sp_ea.eadata != NULL &&
+ spec->u.sp_ea.eadatalen != 0 && !mdt_is_striped_client(exp))
+ return -ENOTSUPP;
+
+ return 0;
+}
+
+/*
+ * VBR: we save three versions in reply:
+ * 0 - parent. Check that parent version is the same during replay.
+ * 1 - name. Version of 'name' if file exists with the same name or
+ * ENOENT_VERSION, it is needed because file may appear due to missed replays.
+ * 2 - child. Version of child by FID. Must be ENOENT. It is mostly sanity
+ * check.
+ */
static int mdt_md_create(struct mdt_thread_info *info)
{
struct mdt_device *mdt = info->mti_mdt;
struct mdt_body *repbody;
struct md_attr *ma = &info->mti_attr;
struct mdt_reint_record *rr = &info->mti_rr;
- struct lu_name *lname;
int rc;
ENTRY;
- DEBUG_REQ(D_INODE, mdt_info_req(info), "Create (%s->"DFID") in "DFID,
- rr->rr_name, PFID(rr->rr_fid2), PFID(rr->rr_fid1));
+ DEBUG_REQ(D_INODE, mdt_info_req(info), "Create ("DNAME"->"DFID") "
+ "in "DFID,
+ PNAME(&rr->rr_name), PFID(rr->rr_fid2), PFID(rr->rr_fid1));
- repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
+ if (!fid_is_md_operative(rr->rr_fid1))
+ RETURN(-EPERM);
- lh = &info->mti_lh[MDT_LH_PARENT];
- mdt_lock_pdo_init(lh, LCK_PW, rr->rr_name, rr->rr_namelen);
+ 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 (IS_ERR(parent))
+ RETURN(PTR_ERR(parent));
+
+ if (!mdt_object_exists(parent))
+ GOTO(put_parent, rc = -ENOENT);
- parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
- MDS_INODELOCK_UPDATE);
- if (IS_ERR(parent))
- RETURN(PTR_ERR(parent));
+ lh = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_pdo_init(lh, LCK_PW, &rr->rr_name);
+ rc = mdt_object_lock(info, parent, lh, MDS_INODELOCK_UPDATE,
+ MDT_CROSS_LOCK);
+ if (rc)
+ GOTO(put_parent, rc);
- child = mdt_object_find(info->mti_env, mdt, rr->rr_fid2);
+ if (!mdt_object_remote(parent)) {
+ rc = mdt_version_get_check_save(info, parent, 0);
+ if (rc)
+ GOTO(unlock_parent, rc);
+ }
+
+ /*
+ * Check child name version during replay.
+ * During create replay a file may exist with same name.
+ */
+ rc = mdt_lookup_version_check(info, parent, &rr->rr_name,
+ &info->mti_tmp_fid1, 1);
+ if (rc == 0)
+ GOTO(unlock_parent, rc = -EEXIST);
+
+ /* -ENOENT is expected here */
+ if (rc != -ENOENT)
+ GOTO(unlock_parent, rc);
+
+ /* save version of file name for replay, it must be ENOENT here */
+ mdt_enoent_version_save(info, 1);
+
+ child = mdt_object_new(info->mti_env, mdt, rr->rr_fid2);
if (likely(!IS_ERR(child))) {
struct md_object *next = mdt_object_child(parent);
- ma->ma_need = MA_INODE;
+ rc = mdt_remote_permission(info, parent, child);
+ if (rc != 0)
+ GOTO(out_put_child, rc);
+
+ ma->ma_need = MA_INODE;
ma->ma_valid = 0;
/* capa for cross-ref will be stored here */
ma->ma_capa = req_capsule_server_get(info->mti_pill,
mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
OBD_FAIL_MDS_REINT_CREATE_WRITE);
- info->mti_mos[0] = parent;
- info->mti_mos[1] = child;
- rc = mdt_version_get_check(info, 0);
+ /* Version of child will be updated on disk. */
+ tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
+ rc = mdt_version_get_check_save(info, child, 2);
if (rc)
GOTO(out_put_child, rc);
info->mti_spec.sp_cr_mode =
mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
- /*
- * Do perform lookup sanity check. We do not know if name exists
- * or not.
- */
- info->mti_spec.sp_cr_lookup = 1;
+ /*
+ * Do not perform lookup sanity check. We know that name does
+ * not exist.
+ */
+ info->mti_spec.sp_cr_lookup = 0;
info->mti_spec.sp_feat = &dt_directory_features;
- lname = mdt_name(info->mti_env, (char *)rr->rr_name,
- rr->rr_namelen);
- rc = mdo_create(info->mti_env, next, lname,
- mdt_object_child(child),
- &info->mti_spec, ma);
+ rc = mdo_create(info->mti_env, next, &rr->rr_name,
+ mdt_object_child(child), &info->mti_spec, ma);
+ if (rc == 0)
+ rc = mdt_attr_get_complex(info, child, ma);
+
if (rc == 0) {
/* Return fid & attr to client. */
if (ma->ma_valid & MA_INODE)
}
out_put_child:
mdt_object_put(info->mti_env, child);
- } else
+ } else {
rc = PTR_ERR(child);
-
+ }
mdt_create_pack_capa(info, rc, child, repbody);
- mdt_object_unlock_put(info, parent, lh, rc);
- RETURN(rc);
+unlock_parent:
+ mdt_object_unlock(info, parent, lh, rc);
+put_parent:
+ mdt_object_put(info->mti_env, parent);
+ RETURN(rc);
}
-/* Partial request to create object only */
-static int mdt_md_mkobj(struct mdt_thread_info *info)
+static int mdt_unlock_slaves(struct mdt_thread_info *mti,
+ struct mdt_object *obj, __u64 ibits,
+ struct mdt_lock_handle *s0_lh,
+ struct mdt_object *s0_obj,
+ struct ldlm_enqueue_info *einfo)
{
- struct mdt_device *mdt = info->mti_mdt;
- struct mdt_object *o;
- struct mdt_body *repbody;
- struct md_attr *ma = &info->mti_attr;
- int rc;
- ENTRY;
-
- DEBUG_REQ(D_INODE, mdt_info_req(info), "Partial create "DFID"",
- PFID(info->mti_rr.rr_fid2));
+ ldlm_policy_data_t *policy = &mti->mti_policy;
+ int rc;
+ ENTRY;
- repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
+ if (!S_ISDIR(obj->mot_header.loh_attr))
+ RETURN(0);
- o = mdt_object_find(info->mti_env, mdt, info->mti_rr.rr_fid2);
- if (!IS_ERR(o)) {
- struct md_object *next = mdt_object_child(o);
+ /* Unlock stripe 0 */
+ if (s0_lh != NULL && lustre_handle_is_used(&s0_lh->mlh_reg_lh)) {
+ LASSERT(s0_obj != NULL);
+ mdt_object_unlock_put(mti, s0_obj, s0_lh, 1);
+ }
- ma->ma_need = MA_INODE;
- ma->ma_valid = 0;
+ memset(policy, 0, sizeof(*policy));
+ policy->l_inodebits.bits = ibits;
- /*
- * Cross-ref create can encounter already created obj in case of
- * recovery, just get attr in that case.
- */
- if (mdt_object_exists(o) == 1) {
- rc = mo_attr_get(info->mti_env, next, ma);
- } else {
- /*
- * Here, NO permission check for object_create,
- * such check has been done on the original MDS.
- */
- rc = mo_object_create(info->mti_env, next,
- &info->mti_spec, ma);
- }
- if (rc == 0) {
- /* Return fid & attr to client. */
- if (ma->ma_valid & MA_INODE)
- mdt_pack_attr2body(info, repbody, &ma->ma_attr,
- mdt_object_fid(o));
- }
- mdt_object_put(info->mti_env, o);
- } else
- rc = PTR_ERR(o);
+ rc = mo_object_unlock(mti->mti_env, mdt_object_child(obj), einfo,
+ policy);
+ RETURN(rc);
+}
- mdt_create_pack_capa(info, rc, o, repbody);
- RETURN(rc);
+/**
+ * Lock slave stripes if necessary, the lock handles of slave stripes
+ * will be stored in einfo->ei_cbdata.
+ **/
+static int mdt_lock_slaves(struct mdt_thread_info *mti, struct mdt_object *obj,
+ ldlm_mode_t mode, __u64 ibits,
+ struct mdt_lock_handle *s0_lh,
+ struct mdt_object **s0_objp,
+ struct ldlm_enqueue_info *einfo)
+{
+ ldlm_policy_data_t *policy = &mti->mti_policy;
+ struct lu_buf *buf = &mti->mti_buf;
+ struct lmv_mds_md_v1 *lmv;
+ struct lu_fid *fid = &mti->mti_tmp_fid1;
+ int rc;
+ ENTRY;
+
+ if (!S_ISDIR(obj->mot_header.loh_attr))
+ RETURN(0);
+
+ buf->lb_buf = mti->mti_xattr_buf;
+ buf->lb_len = sizeof(mti->mti_xattr_buf);
+ rc = mo_xattr_get(mti->mti_env, mdt_object_child(obj), buf,
+ XATTR_NAME_LMV);
+ if (rc == -ERANGE) {
+ rc = mdt_big_xattr_get(mti, obj, XATTR_NAME_LMV);
+ if (rc > 0) {
+ buf->lb_buf = mti->mti_big_lmm;
+ buf->lb_len = mti->mti_big_lmmsize;
+ }
+ }
+
+ if (rc == -ENODATA || rc == -ENOENT)
+ RETURN(0);
+
+ if (rc <= 0)
+ RETURN(rc);
+
+ lmv = buf->lb_buf;
+ if (le32_to_cpu(lmv->lmv_magic) != LMV_MAGIC_V1)
+ RETURN(-EINVAL);
+
+ /* Sigh, 0_stripe and master object are different
+ * object, though they are in the same MDT, to avoid
+ * adding osd_object_lock here, so we will enqueue the
+ * stripe0 lock in MDT0 for now */
+ fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[0]);
+ *s0_objp = mdt_object_find_lock(mti, fid, s0_lh, ibits);
+ if (IS_ERR(*s0_objp))
+ RETURN(PTR_ERR(*s0_objp));
+
+ memset(einfo, 0, sizeof(*einfo));
+ einfo->ei_type = LDLM_IBITS;
+ einfo->ei_mode = mode;
+ einfo->ei_cb_bl = mdt_remote_blocking_ast;
+ einfo->ei_cb_cp = ldlm_completion_ast;
+ einfo->ei_enq_slave = 1;
+ memset(policy, 0, sizeof(*policy));
+ policy->l_inodebits.bits = ibits;
+
+ rc = mo_object_lock(mti->mti_env, mdt_object_child(obj), NULL, einfo,
+ policy);
+ RETURN(rc);
}
-/* In the raw-setattr case, we lock the child inode.
- * In the write-back case or if being called from open,
- * the client holds a lock already.
- * We use the ATTR_FROM_OPEN (translated into MRF_SETATTR_LOCKED by
- * mdt_setattr_unpack()) flag to tell these cases apart. */
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);
- int rc;
- ENTRY;
-
- /* attr shouldn't be set on remote object */
- LASSERT(mdt_object_exists(mo) >= 0);
+ 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;
+ struct ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct mdt_lock_handle *s0_lh;
+ struct mdt_object *s0_obj = NULL;
+ 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);
- if (!(flags & MRF_SETATTR_LOCKED)) {
- __u64 lockpart = MDS_INODELOCK_UPDATE;
- if (ma->ma_attr.la_valid & (LA_MODE|LA_UID|LA_GID))
- lockpart |= MDS_INODELOCK_LOOKUP;
+ /* 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);
- }
+ rc = mdt_object_lock(info, mo, lh, lockpart, MDT_LOCAL_LOCK);
+ if (rc != 0)
+ RETURN(rc);
+
+ s0_lh = &info->mti_lh[MDT_LH_LOCAL];
+ mdt_lock_reg_init(s0_lh, LCK_EX);
+ rc = mdt_lock_slaves(info, mo, LCK_PW, lockpart, s0_lh, &s0_obj, einfo);
+ if (rc != 0)
+ GOTO(out_unlock, rc);
if (mdt_object_exists(mo) == 0)
GOTO(out_unlock, rc = -ENOENT);
/* VBR: update version if attr changed are important for recovery */
if (do_vbr) {
- info->mti_mos[0] = mo;
- rc = mdt_version_get_check(info, 0);
+ /* update on-disk version of changed object */
+ tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(mo));
+ rc = mdt_version_get_check_save(info, mo, 0);
if (rc)
GOTO(out_unlock, rc);
}
+ /* Ensure constant striping during chown(). See LU-2789. */
+ if (ma->ma_attr.la_valid & (LA_UID|LA_GID))
+ mutex_lock(&mo->mot_lov_mutex);
+
/* all attrs are packed into mti_attr in unpack_setattr */
rc = mo_attr_set(info->mti_env, mdt_object_child(mo), ma);
+
+ if (ma->ma_attr.la_valid & (LA_UID|LA_GID))
+ mutex_unlock(&mo->mot_lov_mutex);
+
if (rc != 0)
GOTO(out_unlock, rc);
EXIT;
out_unlock:
+ mdt_unlock_slaves(info, mo, lockpart, s0_lh, s0_obj, einfo);
mdt_object_unlock(info, mo, lh, rc);
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);
+}
+
static int mdt_reint_setattr(struct mdt_thread_info *info,
struct mdt_lock_handle *lhc)
{
struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
struct mdt_file_data *mfd;
struct mdt_object *mo;
- struct md_object *next;
struct mdt_body *repbody;
- int som_au, rc;
+ int som_au, rc, rc2;
ENTRY;
DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1),
if (info->mti_dlm_req)
ldlm_request_cancel(req, info->mti_dlm_req, 0);
- repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
+ 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));
/* start a log jounal handle if needed */
if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM)) {
if ((ma->ma_attr.la_valid & LA_SIZE) ||
- (rr->rr_flags & MRF_SETATTR_LOCKED)) {
+ (rr->rr_flags & MRF_OPEN_TRUNC)) {
/* Check write access for the O_TRUNC case */
if (mdt_write_read(mo) < 0)
GOTO(out_put, rc = -ETXTBSY);
if (rc)
GOTO(out_put, rc);
- mfd = mdt_mfd_new();
+ mfd = mdt_mfd_new(med);
if (mfd == NULL) {
mdt_write_put(mo);
GOTO(out_put, rc = -ENOMEM);
repbody->ioepoch = mo->mot_ioepoch;
mdt_object_get(info->mti_env, mo);
- mdt_mfd_set_mode(mfd, FMODE_TRUNC);
+ mdt_mfd_set_mode(mfd, MDS_FMODE_TRUNC);
mfd->mfd_object = mo;
mfd->mfd_xid = req->rq_xid;
- cfs_spin_lock(&med->med_open_lock);
- cfs_list_add(&mfd->mfd_list, &med->med_open_head);
- cfs_spin_unlock(&med->med_open_lock);
+ spin_lock(&med->med_open_lock);
+ cfs_list_add(&mfd->mfd_list, &med->med_open_head);
+ spin_unlock(&med->med_open_lock);
repbody->handle.cookie = mfd->mfd_handle.h_cookie;
}
LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
LASSERT(info->mti_ioepoch);
- cfs_spin_lock(&med->med_open_lock);
- mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
- if (mfd == NULL) {
- cfs_spin_unlock(&med->med_open_lock);
+ spin_lock(&med->med_open_lock);
+ mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
+ req_is_replay(req));
+ if (mfd == NULL) {
+ spin_unlock(&med->med_open_lock);
CDEBUG(D_INODE, "no handle for file close: "
"fid = "DFID": cookie = "LPX64"\n",
PFID(info->mti_rr.rr_fid1),
info->mti_ioepoch->handle.cookie);
GOTO(out_put, rc = -ESTALE);
}
- LASSERT(mfd->mfd_mode == FMODE_SOM);
+ LASSERT(mfd->mfd_mode == MDS_FMODE_SOM);
LASSERT(!(info->mti_ioepoch->flags & MF_EPOCH_CLOSE));
class_handle_unhash(&mfd->mfd_handle);
cfs_list_del_init(&mfd->mfd_list);
- cfs_spin_unlock(&med->med_open_lock);
-
- /* Close the found mfd, update attributes. */
- ma->ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
- OBD_ALLOC(ma->ma_lmm, ma->ma_lmm_size);
- if (ma->ma_lmm == NULL)
- GOTO(out_put, rc = -ENOMEM);
+ spin_unlock(&med->med_open_lock);
mdt_mfd_close(info, mfd);
-
- OBD_FREE(ma->ma_lmm, ma->ma_lmm_size);
- } else {
+ } else if ((ma->ma_valid & MA_INODE) && ma->ma_attr.la_valid) {
+ LASSERT((ma->ma_valid & MA_LOV) == 0);
rc = mdt_attr_set(info, mo, ma, rr->rr_flags);
if (rc)
GOTO(out_put, rc);
- }
+ } else if ((ma->ma_valid & MA_LOV) && (ma->ma_valid & MA_INODE)) {
+ struct lu_buf *buf = &info->mti_buf;
+ LASSERT(ma->ma_attr.la_valid == 0);
+ buf->lb_buf = ma->ma_lmm;
+ buf->lb_len = ma->ma_lmm_size;
+ rc = mo_xattr_set(info->mti_env, mdt_object_child(mo),
+ buf, XATTR_NAME_LOV, 0);
+ if (rc)
+ GOTO(out_put, rc);
+ } else if ((ma->ma_valid & MA_LMV) && (ma->ma_valid & MA_INODE)) {
+ struct lu_buf *buf = &info->mti_buf;
+
+ LASSERT(ma->ma_attr.la_valid == 0);
+ buf->lb_buf = ma->ma_lmv;
+ buf->lb_len = ma->ma_lmv_size;
+ rc = mo_xattr_set(info->mti_env, mdt_object_child(mo),
+ buf, XATTR_NAME_DEFAULT_LMV, 0);
+ if (rc)
+ GOTO(out_put, rc);
+ } else
+ LBUG();
+
+ /* If file data is modified, add the dirty flag */
+ if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
+ rc = mdt_add_dirty_flag(info, mo, ma);
ma->ma_need = MA_INODE;
ma->ma_valid = 0;
- next = mdt_object_child(mo);
- rc = mo_attr_get(info->mti_env, next, ma);
- if (rc != 0)
- GOTO(out_put, rc);
+ rc = mdt_attr_get_complex(info, mo, ma);
+ if (rc != 0)
+ GOTO(out_put, rc);
- mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo));
+ mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo));
- if (info->mti_mdt->mdt_opts.mo_oss_capa &&
- info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA &&
- S_ISREG(lu_object_attr(&mo->mot_obj.mo_lu)) &&
- (ma->ma_attr.la_valid & LA_SIZE) && !som_au) {
+ if (info->mti_mdt->mdt_lut.lut_oss_capa &&
+ exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA &&
+ S_ISREG(lu_object_attr(&mo->mot_obj)) &&
+ (ma->ma_attr.la_valid & LA_SIZE) && !som_au) {
struct lustre_capa *capa;
capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
out_put:
mdt_object_put(info->mti_env, mo);
out:
- mdt_shrink_reply(info);
+ if (rc == 0)
+ mdt_counter_incr(req, LPROC_MDT_SETATTR);
+
+ mdt_client_compatibility(info);
+ rc2 = mdt_fix_reply(info);
+ if (rc == 0)
+ rc = rc2;
return rc;
}
static int mdt_reint_create(struct mdt_thread_info *info,
struct mdt_lock_handle *lhc)
{
- int rc;
+ struct ptlrpc_request *req = mdt_info_req(info);
+ int rc;
ENTRY;
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE))
if (info->mti_dlm_req)
ldlm_request_cancel(mdt_info_req(info), info->mti_dlm_req, 0);
- switch (info->mti_attr.ma_attr.la_mode & S_IFMT) {
- case S_IFDIR:{
- /* Cross-ref case. */
- if (info->mti_cross_ref) {
- rc = mdt_md_mkobj(info);
- break;
- }
- }
+ if (!lu_name_is_valid(&info->mti_rr.rr_name))
+ RETURN(-EPROTO);
+
+ switch (info->mti_attr.ma_attr.la_mode & S_IFMT) {
+ case S_IFDIR:
+ mdt_counter_incr(req, LPROC_MDT_MKDIR);
+ break;
case S_IFREG:
case S_IFLNK:
case S_IFCHR:
case S_IFBLK:
case S_IFIFO:
- case S_IFSOCK:{
- /* Special file should stay on the same node as parent. */
- LASSERT(info->mti_rr.rr_namelen > 0);
- rc = mdt_md_create(info);
- break;
- }
- default:
- rc = err_serious(-EOPNOTSUPP);
- }
- RETURN(rc);
+ case S_IFSOCK:
+ /* Special file should stay on the same node as parent. */
+ mdt_counter_incr(req, LPROC_MDT_MKNOD);
+ break;
+ default:
+ CERROR("%s: Unsupported mode %o\n",
+ mdt_obd_name(info->mti_mdt),
+ info->mti_attr.ma_attr.la_mode);
+ RETURN(err_serious(-EOPNOTSUPP));
+ }
+
+ rc = mdt_md_create(info);
+ 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_object *mc;
struct mdt_lock_handle *parent_lh;
struct mdt_lock_handle *child_lh;
- struct lu_name *lname;
- int rc;
- ENTRY;
+ struct ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct mdt_lock_handle *s0_lh = NULL;
+ struct mdt_object *s0_obj = NULL;
+ int rc;
+ int no_name = 0;
+ ENTRY;
- DEBUG_REQ(D_INODE, req, "unlink "DFID"/%s", PFID(rr->rr_fid1),
- rr->rr_name);
+ DEBUG_REQ(D_INODE, req, "unlink "DFID"/"DNAME"", PFID(rr->rr_fid1),
+ PNAME(&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_md_operative(rr->rr_fid1))
+ RETURN(-EPERM);
+
/*
- * step 1: lock the parent. Note, this may be child in case of
- * remote operation denoted by ->mti_cross_ref flag.
+ * step 1: Found the parent.
*/
- 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);
- 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);
- }
+ 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];
+ mdt_lock_pdo_init(parent_lh, LCK_PW, &rr->rr_name);
+ rc = mdt_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE,
+ MDT_CROSS_LOCK);
+ if (rc != 0)
+ GOTO(put_parent, rc);
+
+ if (!mdt_object_remote(mp)) {
+ 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, &rr->rr_name, 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_md_operative(child_fid))
+ GOTO(unlock_parent, rc = -EPERM);
+
+ /* 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));
- info->mti_mos[0] = mp;
- rc = mdt_version_get_check(info, 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);
- rc = mdo_lookup(info->mti_env, mdt_object_child(mp),
- lname, child_fid, &info->mti_spec);
- 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);
- 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);
+ if (mdt_object_remote(mc)) {
+ struct mdt_body *repbody;
+
+ if (!fid_is_zero(rr->rr_fid2)) {
+ CDEBUG(D_INFO, "%s: name "DNAME" cannot find "DFID"\n",
+ mdt_obd_name(info->mti_mdt),
+ PNAME(&rr->rr_name), PFID(mdt_object_fid(mc)));
+ GOTO(put_child, rc = -ENOENT);
+ }
+ CDEBUG(D_INFO, "%s: name "DNAME": "DFID" is on another MDT\n",
+ mdt_obd_name(info->mti_mdt),
+ PNAME(&rr->rr_name), PFID(mdt_object_fid(mc)));
+
+ if (!mdt_is_dne_client(req->rq_export))
+ /* Return -ENOTSUPP for old client */
+ GOTO(put_child, rc = -ENOTSUPP);
+
+ 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, &rr->rr_name, 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 '"DNAME"': "
+ "rc = %d\n",
+ mdt_obd_name(info->mti_mdt), PNAME(&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);
+ /*
+ * 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;
+
+ s0_lh = &info->mti_lh[MDT_LH_LOCAL];
+ mdt_lock_reg_init(s0_lh, LCK_EX);
+ rc = mdt_lock_slaves(info, mc, LCK_EX, MDS_INODELOCK_UPDATE, s0_lh,
+ &s0_obj, einfo);
+ if (rc != 0)
+ GOTO(unlock_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);
+
+ 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), &rr->rr_name, 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);
+ }
}
- mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
- OBD_FAIL_MDS_REINT_UNLINK_WRITE);
-
- info->mti_mos[1] = mc;
- rc = mdt_version_get_check(info, 1);
- if (rc)
- GOTO(out_unlock_child, rc);
-
- /*
- * 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);
-
EXIT;
-out_unlock_child:
- mdt_object_unlock_put(info, mc, child_lh, rc);
-out_unlock_parent:
- mdt_object_unlock_put(info, mp, parent_lh, rc);
+
+unlock_child:
+ mdt_unlock_slaves(info, mc, MDS_INODELOCK_UPDATE, s0_lh, s0_obj, einfo);
+ 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 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_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);
+ DEBUG_REQ(D_INODE, req, "link "DFID" to "DFID"/"DNAME,
+ PFID(rr->rr_fid1), PFID(rr->rr_fid2), PNAME(&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);
- if (info->mti_cross_ref) {
- /* MDT holding name ask us to add ref. */
- lhs = &info->mti_lh[MDT_LH_CHILD];
- mdt_lock_reg_init(lhs, LCK_EX);
- ms = mdt_object_find_lock(info, rr->rr_fid1, lhs,
- MDS_INODELOCK_UPDATE);
- if (IS_ERR(ms))
- RETURN(PTR_ERR(ms));
-
- mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
- rc = mo_ref_add(info->mti_env, mdt_object_child(ms), ma);
- mdt_object_unlock_put(info, ms, lhs, rc);
- RETURN(rc);
- }
-
/* Invalid case so return error immediately instead of
* processing it */
if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2))
RETURN(-EPERM);
+ if (!fid_is_md_operative(rr->rr_fid1) ||
+ !fid_is_md_operative(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_EX, rr->rr_name,
- rr->rr_namelen);
+ mdt_lock_pdo_init(lhp, LCK_PW, &rr->rr_name);
mp = mdt_object_find_lock(info, rr->rr_fid2, lhp,
MDS_INODELOCK_UPDATE);
if (IS_ERR(mp))
RETURN(PTR_ERR(mp));
- info->mti_mos[0] = mp;
- rc = mdt_version_get_check(info, 0);
+ rc = mdt_version_get_check_save(info, mp, 0);
if (rc)
GOTO(out_unlock_parent, rc);
if (IS_ERR(ms))
GOTO(out_unlock_parent, rc = PTR_ERR(ms));
- rc = mdt_object_lock(info, ms, lhs, MDS_INODELOCK_UPDATE,
- MDT_CROSS_LOCK);
+ if (!mdt_object_exists(ms)) {
+ mdt_object_put(info->mti_env, ms);
+ CDEBUG(D_INFO, "%s: "DFID" does not exist.\n",
+ mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1));
+ GOTO(out_unlock_parent, rc = -ENOENT);
+ }
+
+ if (mdt_object_remote(ms)) {
+ mdt_object_put(info->mti_env, ms);
+ CERROR("%s: source inode "DFID" on remote MDT from "DFID"\n",
+ mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1),
+ PFID(rr->rr_fid2));
+ GOTO(out_unlock_parent, rc = -EXDEV);
+ }
+
+ rc = mdt_object_lock(info, ms, lhs, MDS_INODELOCK_UPDATE |
+ MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
if (rc != 0) {
mdt_object_put(info->mti_env, ms);
GOTO(out_unlock_parent, rc);
mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
OBD_FAIL_MDS_REINT_LINK_WRITE);
- info->mti_mos[1] = ms;
- rc = mdt_version_get_check(info, 1);
+ tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(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);
- rc = mdo_link(info->mti_env, mdt_object_child(mp),
- mdt_object_child(ms), lname, ma);
+ /** check target version by name during replay */
+ rc = mdt_lookup_version_check(info, mp, &rr->rr_name,
+ &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))) {
+ if (rc != -ENOENT) {
+ CDEBUG(D_INFO, "link target "DNAME" existed!\n",
+ PNAME(&rr->rr_name));
+ GOTO(out_unlock_child, rc = -EEXIST);
+ }
+ 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), &rr->rr_name, ma);
+
+ if (rc == 0)
+ mdt_counter_incr(req, LPROC_MDT_LINK);
EXIT;
out_unlock_child:
mdt_object_unlock_put(info, mp, lhp, rc);
return rc;
}
-
-/* partial operation for rename */
-static int mdt_reint_rename_tgt(struct mdt_thread_info *info)
+/**
+ * lock the part of the directory according to the hash of the name
+ * (lh->mlh_pdo_hash) in parallel directory lock.
+ */
+static int mdt_pdir_hash_lock(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lh,
+ struct mdt_object *obj, __u64 ibits)
{
- 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 *mtgtdir;
- struct mdt_object *mtgt = NULL;
- struct mdt_lock_handle *lh_tgtdir;
- struct mdt_lock_handle *lh_tgt = NULL;
- struct lu_fid *tgt_fid = &info->mti_tmp_fid1;
- struct lu_name *lname;
- int rc;
- ENTRY;
-
- DEBUG_REQ(D_INODE, req, "rename_tgt: insert (%s->"DFID") in "DFID,
- rr->rr_tgt, PFID(rr->rr_fid2), PFID(rr->rr_fid1));
-
- /* step 1: lookup & lock the tgt dir. */
- lh_tgtdir = &info->mti_lh[MDT_LH_PARENT];
- mdt_lock_pdo_init(lh_tgtdir, LCK_PW, rr->rr_tgt,
- rr->rr_tgtlen);
- mtgtdir = mdt_object_find_lock(info, rr->rr_fid1, lh_tgtdir,
- MDS_INODELOCK_UPDATE);
- if (IS_ERR(mtgtdir))
- RETURN(PTR_ERR(mtgtdir));
-
- /* step 2: find & lock the target object if exists. */
- mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
- lname = mdt_name(info->mti_env, (char *)rr->rr_tgt, rr->rr_tgtlen);
- rc = mdo_lookup(info->mti_env, mdt_object_child(mtgtdir),
- lname, tgt_fid, &info->mti_spec);
- if (rc != 0 && rc != -ENOENT) {
- GOTO(out_unlock_tgtdir, rc);
- } else if (rc == 0) {
- /*
- * In case of replay that name can be already inserted, check
- * that and do nothing if so.
- */
- if (lu_fid_eq(tgt_fid, rr->rr_fid2))
- GOTO(out_unlock_tgtdir, rc);
-
- lh_tgt = &info->mti_lh[MDT_LH_CHILD];
- mdt_lock_reg_init(lh_tgt, LCK_EX);
-
- mtgt = mdt_object_find_lock(info, tgt_fid, lh_tgt,
- MDS_INODELOCK_LOOKUP);
- if (IS_ERR(mtgt))
- GOTO(out_unlock_tgtdir, rc = PTR_ERR(mtgt));
-
- mdt_reint_init_ma(info, ma);
- if (!ma->ma_lmm || !ma->ma_cookie)
- GOTO(out_unlock_tgt, rc = -EINVAL);
-
- rc = mdo_rename_tgt(info->mti_env, mdt_object_child(mtgtdir),
- mdt_object_child(mtgt), rr->rr_fid2,
- lname, ma);
- } else /* -ENOENT */ {
- rc = mdo_name_insert(info->mti_env, mdt_object_child(mtgtdir),
- lname, rr->rr_fid2, ma);
- }
-
- /* handle last link of tgt object */
- if (rc == 0 && mtgt)
- mdt_handle_last_unlink(info, mtgt, ma);
-
- EXIT;
-out_unlock_tgt:
- if (mtgt)
- mdt_object_unlock_put(info, mtgt, lh_tgt, rc);
-out_unlock_tgtdir:
- mdt_object_unlock_put(info, mtgtdir, lh_tgtdir, rc);
- return rc;
+ struct ldlm_res_id *res = &info->mti_res_id;
+ struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
+ ldlm_policy_data_t *policy = &info->mti_policy;
+ int rc;
+
+ /*
+ * Finish res_id initializing by name hash marking part of
+ * directory which is taking modification.
+ */
+ LASSERT(lh->mlh_pdo_hash != 0);
+ fid_build_pdo_res_name(mdt_object_fid(obj), lh->mlh_pdo_hash, res);
+ memset(policy, 0, sizeof(*policy));
+ policy->l_inodebits.bits = ibits;
+ /*
+ * Use LDLM_FL_LOCAL_ONLY for this lock. We do not know yet if it is
+ * 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, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
+ &info->mti_exp->exp_handle.h_cookie);
+ return rc;
}
+enum mdt_rename_lock {
+ MRL_RENAME,
+ MRL_MIGRATE,
+};
+
+/**
+ * Get BFL lock for rename or migrate process, right now, it does not support
+ * cross-MDT rename, so we only need global rename lock during migration.
+ **/
static int mdt_rename_lock(struct mdt_thread_info *info,
- struct lustre_handle *lh)
+ struct lustre_handle *lh,
+ enum mdt_rename_lock rename_lock)
{
- struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
- ldlm_policy_data_t *policy = &info->mti_policy;
- struct ldlm_res_id *res_id = &info->mti_res_id;
- struct md_site *ms;
- int rc;
- ENTRY;
-
- ms = mdt_md_site(info->mti_mdt);
- fid_build_reg_res_name(&LUSTRE_BFL_FID, res_id);
-
- memset(policy, 0, sizeof *policy);
- policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
-
- if (ms->ms_control_exp == NULL) {
- int flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
-
- /*
- * Current node is controller, that is mdt0, where we should
- * take BFL lock.
- */
- rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy,
- LCK_EX, &flags, ldlm_blocking_ast,
- ldlm_completion_ast, NULL, NULL, 0,
- &info->mti_exp->exp_handle.h_cookie,
- lh);
- } else {
- struct ldlm_enqueue_info einfo = { LDLM_IBITS, LCK_EX,
- ldlm_blocking_ast, ldlm_completion_ast, NULL, NULL, NULL };
- int flags = 0;
-
- /*
- * This is the case mdt0 is remote node, issue DLM lock like
- * other clients.
- */
- rc = ldlm_cli_enqueue(ms->ms_control_exp, NULL, &einfo, res_id,
- policy, &flags, NULL, 0, lh, 0);
- }
-
- RETURN(rc);
+ struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
+ ldlm_policy_data_t *policy = &info->mti_policy;
+ struct ldlm_res_id *res_id = &info->mti_res_id;
+ __u64 flags = 0;
+ int rc;
+ ENTRY;
+
+ /* XXX only do global rename lock for migration */
+ if (mdt_seq_site(info->mti_mdt)->ss_node_id != 0 &&
+ rename_lock == MRL_MIGRATE) {
+ struct lu_fid *fid = &info->mti_tmp_fid1;
+ struct mdt_object *obj;
+
+ /* XXX, right now, it has to use object API to
+ * enqueue lock cross MDT, so it will enqueue
+ * rename lock(with LUSTRE_BFL_FID) by root object */
+ lu_root_fid(fid);
+ obj = mdt_object_find(info->mti_env, info->mti_mdt, fid);
+ if (IS_ERR(obj))
+ RETURN(PTR_ERR(obj));
+
+ LASSERT(mdt_object_remote(obj));
+ rc = mdt_remote_object_lock(info, obj,
+ &LUSTRE_BFL_FID, lh,
+ LCK_EX,
+ MDS_INODELOCK_UPDATE);
+ mdt_object_put(info->mti_env, obj);
+ } else {
+ fid_build_reg_res_name(&LUSTRE_BFL_FID, res_id);
+ 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);
+ }
+
+ RETURN(rc);
}
static void mdt_rename_unlock(struct lustre_handle *lh)
{
- ENTRY;
- LASSERT(lustre_handle_is_used(lh));
- ldlm_lock_decref(lh, LCK_EX);
- EXIT;
+ ENTRY;
+ LASSERT(lustre_handle_is_used(lh));
+ /* Cancel the single rename lock right away */
+ ldlm_lock_decref_and_cancel(lh, LCK_EX);
+ EXIT;
}
/*
* target. Source should not be ancestor of target dir. May be other rename
* checks can be moved here later.
*/
-static int mdt_rename_sanity(struct mdt_thread_info *info, struct lu_fid *fid)
+static int mdt_rename_sanity(struct mdt_thread_info *info,
+ const struct lu_fid *dir_fid,
+ const struct lu_fid *fid)
{
- struct mdt_reint_record *rr = &info->mti_rr;
- struct lu_fid dst_fid = *rr->rr_fid2;
struct mdt_object *dst;
+ struct lu_fid dst_fid = *dir_fid;
int rc = 0;
ENTRY;
- do {
- LASSERT(fid_is_sane(&dst_fid));
- dst = mdt_object_find(info->mti_env, info->mti_mdt, &dst_fid);
- if (!IS_ERR(dst)) {
- rc = mdo_is_subdir(info->mti_env,
- mdt_object_child(dst), fid,
- &dst_fid);
- mdt_object_put(info->mti_env, dst);
- if (rc != -EREMOTE && rc < 0) {
- CERROR("Failed mdo_is_subdir(), rc %d\n", rc);
- } else {
- /* check the found fid */
- if (lu_fid_eq(&dst_fid, fid))
- rc = -EINVAL;
- }
- } else {
- rc = PTR_ERR(dst);
- }
- } while (rc == -EREMOTE);
+ /* If the source and target are in the same directory, they can not
+ * be parent/child relationship, so subdir check is not needed */
+ if (lu_fid_eq(dir_fid, fid))
+ return 0;
+
+ do {
+ LASSERT(fid_is_sane(&dst_fid));
+ dst = mdt_object_find(info->mti_env, info->mti_mdt, &dst_fid);
+ if (!IS_ERR(dst)) {
+ rc = mdo_is_subdir(info->mti_env,
+ mdt_object_child(dst), fid,
+ &dst_fid);
+ mdt_object_put(info->mti_env, dst);
+ if (rc != -EREMOTE && rc < 0) {
+ CERROR("%s: failed subdir check in "DFID" for "
+ DFID": rc = %d\n",
+ mdt_obd_name(info->mti_mdt),
+ PFID(dir_fid), PFID(fid), rc);
+ /* Return EINVAL only if a parent is the @fid */
+ if (rc == -EINVAL)
+ rc = -EIO;
+ } else {
+ /* check the found fid */
+ if (lu_fid_eq(&dst_fid, fid))
+ rc = -EINVAL;
+ }
+ } else {
+ rc = PTR_ERR(dst);
+ }
+ } while (rc == -EREMOTE);
RETURN(rc);
}
-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(mdt_info_req(info), info->mti_dlm_req, 0);
-
- if (info->mti_cross_ref) {
- rc = mdt_reint_rename_tgt(info);
- RETURN(rc);
- }
-
- 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));
-
- info->mti_mos[0] = msrcdir;
- rc = mdt_version_get_check(info, 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;
- } 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));
+/* Update object linkEA */
+struct mdt_lock_list {
+ struct mdt_object *mll_obj;
+ struct mdt_lock_handle mll_lh;
+ struct list_head mll_list;
+};
- rc = mdt_object_exists(mtgtdir);
- if (rc == 0)
- GOTO(out_unlock_target, rc = -ESTALE);
- else if (rc > 0) {
- /* 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) {
- mdt_object_put(info->mti_env, mtgtdir);
- GOTO(out_unlock_source, rc);
- }
-
- info->mti_mos[1] = mtgtdir;
- rc = mdt_version_get_check(info, 1);
- if (rc)
- GOTO(out_unlock_target, rc);
- }
- }
+static void mdt_unlock_list(struct mdt_thread_info *info,
+ struct list_head *list, int rc)
+{
+ struct mdt_lock_list *mll;
+ struct mdt_lock_list *mll2;
+
+ 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);
+ }
+}
- /* 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);
- rc = mdo_lookup(info->mti_env, mdt_object_child(msrcdir),
- &slname, old_fid, &info->mti_spec);
- if (rc != 0)
- GOTO(out_unlock_target, rc);
+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)
+{
+ struct lu_buf *buf = &info->mti_big_buf;
+ struct linkea_data ldata = { 0 };
+ int count;
+ int rc;
+ ENTRY;
+
+ if (S_ISDIR(lu_object_attr(&obj->mot_obj)))
+ RETURN(0);
+
+ buf = lu_buf_check_and_alloc(buf, PATH_MAX);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
+
+ ldata.ld_buf = buf;
+ rc = mdt_links_read(info, obj, &ldata);
+ if (rc != 0) {
+ if (rc == -ENOENT || rc == -ENODATA)
+ rc = 0;
+ RETURN(rc);
+ }
+
+ 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;
+
+ linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
+ &name, &fid);
+ ldata.ld_lee = (struct link_ea_entry *)((char *)ldata.ld_lee +
+ ldata.ld_reclen);
+ 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));
+ 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);
+ continue;
+ }
+
+ 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);
+ continue;
+ }
+
+ OBD_ALLOC_PTR(mll);
+ if (mll == NULL) {
+ mdt_object_put(info->mti_env, mdt_pobj);
+ GOTO(out, rc = -ENOMEM);
+ }
+
+ mdt_lock_pdo_init(&mll->mll_lh, LCK_PW, &name);
+ rc = mdt_object_lock(info, mdt_pobj, &mll->mll_lh,
+ MDS_INODELOCK_UPDATE,
+ MDT_CROSS_LOCK);
+ if (rc != 0) {
+ CERROR("%s: cannot lock "DFID": rc =%d\n",
+ mdt_obd_name(mdt), PFID(&fid), rc);
+ mdt_object_put(info->mti_env, mdt_pobj);
+ OBD_FREE_PTR(mll);
+ GOTO(out, rc);
+ }
+
+ CFS_INIT_LIST_HEAD(&mll->mll_list);
+ mll->mll_obj = mdt_pobj;
+ list_add_tail(&mll->mll_list, lock_list);
+ }
+out:
+ if (rc != 0)
+ mdt_unlock_list(info, lock_list, rc);
+ RETURN(rc);
+}
- if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
- GOTO(out_unlock_target, rc = -EINVAL);
+/* migrate files from one MDT to another MDT */
+static int mdt_reint_migrate_internal(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 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;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_INODE, "migrate "DFID"/"DNAME" to "DFID"\n", PFID(rr->rr_fid1),
+ PNAME(&rr->rr_name), PFID(rr->rr_fid2));
+
+ /* 1: lock the source dir. */
+ msrcdir = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
+ if (IS_ERR(msrcdir)) {
+ CERROR("%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));
+ }
+
+ lh_dirp = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_pdo_init(lh_dirp, LCK_PW, &rr->rr_name);
+ rc = mdt_object_lock(info, msrcdir, lh_dirp,
+ MDS_INODELOCK_UPDATE,
+ MDT_CROSS_LOCK);
+ if (rc)
+ GOTO(out_put_parent, rc);
+
+ if (!mdt_object_remote(msrcdir)) {
+ rc = mdt_version_get_check_save(info, msrcdir, 0);
+ if (rc)
+ GOTO(out_unlock_parent, rc);
+ }
+
+ /* 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);
+
+ if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
+ GOTO(out_unlock_parent, rc = -EINVAL);
+
+ if (!fid_is_md_operative(old_fid))
+ GOTO(out_unlock_parent, rc = -EPERM);
+
+ mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
+ if (IS_ERR(mold))
+ GOTO(out_unlock_parent, rc = PTR_ERR(mold));
+
+ if (mdt_object_remote(mold)) {
+ CERROR("%s: source "DFID" is on the remote MDT\n",
+ mdt_obd_name(info->mti_mdt), PFID(old_fid));
+ GOTO(out_put_child, rc = -EREMOTE);
+ }
+
+ if (S_ISREG(lu_object_attr(&mold->mot_obj)) &&
+ !mdt_object_remote(msrcdir)) {
+ CERROR("%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);
+ }
+
+ rc = mdt_remote_permission(info, msrcdir, mold);
+ if (rc != 0)
+ GOTO(out_put_child, rc);
+
+ /* 3: iterate the linkea of the object and lock all of the objects */
+ CFS_INIT_LIST_HEAD(&lock_list);
+ rc = mdt_lock_objects_in_linkea(info, mold, msrcdir, &lock_list);
+ if (rc != 0)
+ GOTO(out_put_child, rc);
+
+ /* 4: lock of the object migrated object */
+ lh_childp = &info->mti_lh[MDT_LH_OLD];
+ mdt_lock_reg_init(lh_childp, LCK_EX);
+ rc = mdt_object_lock(info, mold, lh_childp,
+ MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
+ MDS_INODELOCK_LAYOUT, MDT_CROSS_LOCK);
+ if (rc != 0)
+ GOTO(out_unlock_list, rc);
+
+ 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_list, 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)) {
+ CERROR("%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);
+ }
+
+ if (!fid_is_sane(&lmm1->lmv_stripe_fids[1]))
+ GOTO(out_unlock_child, rc = -EINVAL);
+
+ 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)) {
+ CERROR("%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);
+ }
+
+ 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);
+ 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)) {
+ CERROR("%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);
+ }
+ }
+
+ /* 5: migrate it */
+ mdt_reint_init_ma(info, ma);
+
+ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
+ OBD_FAIL_MDS_REINT_RENAME_WRITE);
+
+ 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);
+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:
+ mdt_unlock_list(info, &lock_list, rc);
+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);
- mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
- if (IS_ERR(mold))
- GOTO(out_unlock_target, rc = PTR_ERR(mold));
+ RETURN(rc);
+}
- 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);
- }
+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;
- info->mti_mos[2] = mold;
- rc = mdt_version_get_check(info, 2);
- if (rc)
- GOTO(out_unlock_old, rc);
+ dir = mdt_object_find(info->mti_env, info->mti_mdt, fid);
+ if (IS_ERR(dir))
+ RETURN(dir);
- mdt_set_capainfo(info, 2, old_fid, BYPASS_CAPA);
+ /* check early, the real version will be saved after locking */
+ rc = mdt_version_get_check(info, dir, idx);
+ if (rc)
+ GOTO(out_put, rc);
- /* 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);
- rc = mdo_lookup(info->mti_env, mdt_object_child(mtgtdir),
- lname, new_fid, &info->mti_spec);
- 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));
-
- 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);
- }
+ RETURN(dir);
+out_put:
+ mdt_object_put(info->mti_env, dir);
+ return ERR_PTR(rc);
+}
- info->mti_mos[3] = mnew;
- rc = mdt_version_get_check(info, 3);
- if (rc)
- GOTO(out_unlock_new, rc);
+static int mdt_object_lock_save(struct mdt_thread_info *info,
+ struct mdt_object *dir,
+ struct mdt_lock_handle *lh,
+ int idx)
+{
+ int rc;
- mdt_set_capainfo(info, 3, new_fid, BYPASS_CAPA);
- } else if (rc != -EREMOTE && rc != -ENOENT)
- GOTO(out_unlock_old, rc);
+ /* we lock the target dir if it is local */
+ rc = mdt_object_lock(info, dir, lh, MDS_INODELOCK_UPDATE,
+ MDT_LOCAL_LOCK);
+ if (rc != 0)
+ return rc;
- /* step 5: rename it */
- mdt_reint_init_ma(info, ma);
- if (!ma->ma_lmm || !ma->ma_cookie)
- GOTO(out_unlock_new, rc = -EINVAL);
+ /* get and save correct version after locking */
+ mdt_version_get_save(info, dir, idx);
+ return 0;
+}
- mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
- OBD_FAIL_MDS_REINT_RENAME_WRITE);
+static int mdt_rename_parents_lock(struct mdt_thread_info *info,
+ struct mdt_object **srcp,
+ struct mdt_object **tgtp)
+{
+ struct mdt_reint_record *rr = &info->mti_rr;
+ const struct lu_fid *fid_src = rr->rr_fid1;
+ const struct lu_fid *fid_tgt = rr->rr_fid2;
+ struct mdt_lock_handle *lh_src = &info->mti_lh[MDT_LH_PARENT];
+ struct mdt_lock_handle *lh_tgt = &info->mti_lh[MDT_LH_CHILD];
+ struct mdt_object *src;
+ struct mdt_object *tgt;
+ int reverse = 0;
+ int rc;
+ ENTRY;
+
+ /* Check if the @src is not a child of the @tgt, otherwise a
+ * reverse locking must take place.
+ *
+ * Note: cannot be called after object_find, because if the object
+ * is destroyed in between it gets stuck in lu_object_find_at(),
+ * waiting for the last ref. */
+ rc = mdt_rename_sanity(info, fid_src, fid_tgt);
+ if (rc == -EINVAL)
+ reverse = 1;
+ else if (rc)
+ RETURN(rc);
+
+ /* find both parents. */
+ src = mdt_object_find_check(info, fid_src, 0);
+ if (IS_ERR(src))
+ RETURN(PTR_ERR(src));
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME3, 5);
+
+ if (lu_fid_eq(fid_src, fid_tgt)) {
+ tgt = src;
+ mdt_object_get(info->mti_env, tgt);
+ } else {
+ tgt = mdt_object_find_check(info, fid_tgt, 1);
+ if (IS_ERR(tgt))
+ GOTO(err_src_put, rc = PTR_ERR(tgt));
+
+ if (unlikely(mdt_object_remote(tgt))) {
+ CDEBUG(D_INFO, "Source dir "DFID" target dir "DFID
+ "on different MDTs\n", PFID(fid_src),
+ PFID(fid_tgt));
+ GOTO(err_tgt_put, rc = -EXDEV);
+ }
+ }
+
+ /* lock parents in the proper order. */
+ if (reverse) {
+ rc = mdt_object_lock_save(info, tgt, lh_tgt, 1);
+ if (rc)
+ GOTO(err_tgt_put, rc);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME, 5);
+
+ rc = mdt_object_lock_save(info, src, lh_src, 0);
+ } else {
+ rc = mdt_object_lock_save(info, src, lh_src, 0);
+ if (rc)
+ GOTO(err_tgt_put, rc);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME, 5);
+
+ if (tgt != src)
+ rc = mdt_object_lock_save(info, tgt, lh_tgt, 1);
+ else if (lh_src->mlh_pdo_hash != lh_tgt->mlh_pdo_hash) {
+ rc = mdt_pdir_hash_lock(info, lh_tgt, tgt,
+ MDS_INODELOCK_UPDATE);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK2, 10);
+ }
+ }
+ if (rc)
+ GOTO(err_unlock, rc);
+
+ if (lu_object_is_dying(&tgt->mot_header))
+ GOTO(err_unlock, rc = -ENOENT);
+
+ *srcp = src;
+ *tgtp = tgt;
+ RETURN(0);
+
+err_unlock:
+ /* The order does not matter as the handle is checked inside,
+ * as well as not used handle. */
+ mdt_object_unlock(info, src, lh_src, rc);
+ mdt_object_unlock(info, tgt, lh_tgt, rc);
+err_tgt_put:
+ mdt_object_put(info->mti_env, tgt);
+err_src_put:
+ mdt_object_put(info->mti_env, src);
+ RETURN(rc);
+}
- /* Check if @dst is subdir of @src. */
- rc = mdt_rename_sanity(info, old_fid);
- if (rc)
- GOTO(out_unlock_new, 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.
+ */
+/**
+ * For DNE phase I, only these renames are allowed
+ * mv src_p/src_c tgt_p/tgt_c
+ * 1. src_p/src_c/tgt_p/tgt_c are in the same MDT.
+ * 2. src_p and tgt_p are same directory, and tgt_c does not
+ * exists. In this case, all of modification will happen
+ * in the MDT where ithesource parent is, only one remote
+ * update is needed, i.e. set c_time/m_time on the child.
+ * And tgt_c will be still in the same MDT as the original
+ * src_c.
+ */
+static int mdt_reint_rename_internal(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 = NULL;
+ struct mdt_object *mtgtdir = NULL;
+ 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 = NULL;
+ struct mdt_lock_handle *lh_newp = NULL;
+ struct lu_fid *old_fid = &info->mti_tmp_fid1;
+ struct lu_fid *new_fid = &info->mti_tmp_fid2;
+ int rc;
+ ENTRY;
+
+ DEBUG_REQ(D_INODE, req, "rename "DFID"/"DNAME" to "DFID"/"DNAME,
+ PFID(rr->rr_fid1), PNAME(&rr->rr_name),
+ PFID(rr->rr_fid2), PNAME(&rr->rr_tgt_name));
+
+ lh_srcdirp = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_pdo_init(lh_srcdirp, LCK_PW, &rr->rr_name);
+ lh_tgtdirp = &info->mti_lh[MDT_LH_CHILD];
+ mdt_lock_pdo_init(lh_tgtdirp, LCK_PW, &rr->rr_tgt_name);
+
+ /* step 1&2: lock the source and target dirs. */
+ rc = mdt_rename_parents_lock(info, &msrcdir, &mtgtdir);
+ if (rc)
+ RETURN(rc);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME2, 5);
+
+ /* step 3: find & lock the old object. */
+ fid_zero(old_fid);
+ rc = mdt_lookup_version_check(info, msrcdir, &rr->rr_name, old_fid, 2);
+ if (rc != 0)
+ GOTO(out_unlock_parents, rc);
+
+ if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
+ GOTO(out_unlock_parents, rc = -EINVAL);
+
+ if (!fid_is_md_operative(old_fid))
+ GOTO(out_unlock_parents, rc = -EPERM);
+
+ mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
+ if (IS_ERR(mold))
+ GOTO(out_unlock_parents, rc = PTR_ERR(mold));
+
+ /* Check if @mtgtdir is subdir of @mold, before locking child
+ * to avoid reverse locking. */
+ rc = mdt_rename_sanity(info, rr->rr_fid2, old_fid);
+ if (rc)
+ GOTO(out_put_old, rc);
+
+ tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(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 */
+ /* lookup with version checking */
+ fid_zero(new_fid);
+ rc = mdt_lookup_version_check(info, mtgtdir, &rr->rr_tgt_name, 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_put_old, rc);
+
+ if (lu_fid_eq(new_fid, rr->rr_fid1) ||
+ lu_fid_eq(new_fid, rr->rr_fid2))
+ GOTO(out_put_old, rc = -EINVAL);
+
+ if (!fid_is_md_operative(new_fid))
+ GOTO(out_put_old, rc = -EPERM);
+
+ if (mdt_object_remote(mold)) {
+ CDEBUG(D_INFO, "Src child "DFID" is on another MDT\n",
+ PFID(old_fid));
+ GOTO(out_put_old, rc = -EXDEV);
+ }
+
+ mnew = mdt_object_find(info->mti_env, info->mti_mdt, new_fid);
+ if (IS_ERR(mnew))
+ GOTO(out_put_old, rc = PTR_ERR(mnew));
+
+ if (mdt_object_remote(mnew)) {
+ CDEBUG(D_INFO, "src child "DFID" is on another MDT\n",
+ PFID(new_fid));
+ GOTO(out_put_new, rc = -EXDEV);
+ }
+
+ 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 |
+ MDS_INODELOCK_XATTR, MDT_CROSS_LOCK);
+ if (rc != 0)
+ GOTO(out_put_new, rc);
+
+ /* Check if @msrcdir is subdir of @mnew, before locking child
+ * to avoid reverse locking. */
+ rc = mdt_rename_sanity(info, rr->rr_fid1, new_fid);
+ if (rc)
+ GOTO(out_unlock_old, rc);
+
+ /* We used to acquire MDS_INODELOCK_FULL here but we
+ * can't do this now because a running HSM restore on
+ * the rename onto victim will hold the layout
+ * lock. See LU-4002. */
+
+ lh_newp = &info->mti_lh[MDT_LH_NEW];
+ mdt_lock_reg_init(lh_newp, LCK_EX);
+ rc = mdt_object_lock(info, mnew, lh_newp,
+ MDS_INODELOCK_LOOKUP |
+ MDS_INODELOCK_UPDATE,
+ MDT_LOCAL_LOCK);
+ if (rc != 0)
+ 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_put_old, rc);
+ } else {
+ /* If mnew does not exist and mold are remote directory,
+ * it only allows rename if they are under same directory */
+ if (mtgtdir != msrcdir && mdt_object_remote(mold)) {
+ CDEBUG(D_INFO, "Src child "DFID" is on another MDT\n",
+ PFID(old_fid));
+ GOTO(out_put_old, rc = -EXDEV);
+ }
+
+ 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 |
+ MDS_INODELOCK_XATTR, MDT_CROSS_LOCK);
+ if (rc != 0)
+ GOTO(out_put_old, rc);
+
+ 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);
+
+ if (mnew != NULL)
+ mutex_lock(&mnew->mot_lov_mutex);
+
+ rc = mdo_rename(info->mti_env, mdt_object_child(msrcdir),
+ mdt_object_child(mtgtdir), old_fid, &rr->rr_name,
+ mnew != NULL ? mdt_object_child(mnew) : NULL,
+ &rr->rr_tgt_name, ma);
+
+ if (mnew != NULL)
+ mutex_unlock(&mnew->mot_lov_mutex);
+
+ /* 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;
+ if (mnew != NULL)
+ mdt_object_unlock(info, mnew, lh_newp, rc);
+out_unlock_old:
+ mdt_object_unlock(info, mold, lh_oldp, rc);
+out_put_new:
+ 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_unlock_put(info, mtgtdir, lh_tgtdirp, rc);
+ mdt_object_unlock_put(info, msrcdir, lh_srcdirp, rc);
+ return 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);
+static int mdt_reint_rename_or_migrate(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lhc,
+ enum mdt_rename_lock rename_lock)
+{
+ struct mdt_reint_record *rr = &info->mti_rr;
+ struct ptlrpc_request *req = mdt_info_req(info);
+ struct lustre_handle rename_lh = { 0 };
+ int rc;
+ ENTRY;
+
+ if (info->mti_dlm_req)
+ ldlm_request_cancel(req, info->mti_dlm_req, 0);
+
+ if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1) ||
+ fid_is_obf(rr->rr_fid2) || fid_is_dot_lustre(rr->rr_fid2))
+ RETURN(-EPERM);
+
+ rc = mdt_rename_lock(info, &rename_lh, rename_lock);
+ if (rc != 0) {
+ CERROR("%s: can't lock FS for rename: rc = %d\n",
+ mdt_obd_name(info->mti_mdt), rc);
+ RETURN(rc);
+ }
+
+ if (rename_lock == MRL_RENAME)
+ rc = mdt_reint_rename_internal(info, lhc);
+ else
+ rc = mdt_reint_migrate_internal(info, lhc);
+
+ if (lustre_handle_is_used(&rename_lh))
+ mdt_rename_unlock(&rename_lh);
+
+ RETURN(rc);
+}
- /* handle last link of tgt object */
- if (rc == 0 && mnew)
- mdt_handle_last_unlink(info, mnew, ma);
+static int mdt_reint_rename(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lhc)
+{
+ return mdt_reint_rename_or_migrate(info, lhc, MRL_RENAME);
+}
- 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_put(info, mtgtdir, lh_tgtdirp, rc);
-out_unlock_source:
- mdt_object_unlock_put(info, msrcdir, lh_srcdirp, rc);
-out_rename_lock:
- mdt_rename_unlock(&rename_lh);
- return rc;
+static int mdt_reint_migrate(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lhc)
+{
+ return mdt_reint_rename_or_migrate(info, lhc, MRL_MIGRATE);
}
typedef int (*mdt_reinter)(struct mdt_thread_info *info,
struct mdt_lock_handle *lhc);
static mdt_reinter reinters[REINT_MAX] = {
- [REINT_SETATTR] = mdt_reint_setattr,
- [REINT_CREATE] = mdt_reint_create,
- [REINT_LINK] = mdt_reint_link,
- [REINT_UNLINK] = mdt_reint_unlink,
- [REINT_RENAME] = mdt_reint_rename,
- [REINT_OPEN] = mdt_reint_open,
- [REINT_SETXATTR] = mdt_reint_setxattr
+ [REINT_SETATTR] = mdt_reint_setattr,
+ [REINT_CREATE] = mdt_reint_create,
+ [REINT_LINK] = mdt_reint_link,
+ [REINT_UNLINK] = mdt_reint_unlink,
+ [REINT_RENAME] = mdt_reint_rename,
+ [REINT_OPEN] = mdt_reint_open,
+ [REINT_SETXATTR] = mdt_reint_setxattr,
+ [REINT_RMENTRY] = mdt_reint_unlink,
+ [REINT_MIGRATE] = mdt_reint_migrate,
};
int mdt_reint_rec(struct mdt_thread_info *info,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff