*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_MDS
+#include <lprocfs_status.h>
#include "mdt_internal.h"
+#include <lustre_lmv.h>
static inline void mdt_reint_init_ma(struct mdt_thread_info *info,
struct md_attr *ma)
ma->ma_valid = 0;
}
-static int mdt_create_pack_capa(struct mdt_thread_info *info, int rc,
- struct mdt_object *object,
- struct mdt_body *repbody)
-{
- ENTRY;
-
- /* for cross-ref mkdir, mds capa has been fetched from remote obj, then
- * we won't go to below*/
- if (repbody->valid & OBD_MD_FLMDSCAPA)
- RETURN(rc);
-
- if (rc == 0 && info->mti_mdt->mdt_opts.mo_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);
- LASSERT(capa);
- capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
- rc = mo_capa_get(info->mti_env, mdt_object_child(object), capa,
- 0);
- if (rc == 0)
- repbody->valid |= OBD_MD_FLMDSCAPA;
- }
-
- RETURN(rc);
-}
-
/**
* Get version of object by fid.
*
static void mdt_obj_version_get(struct mdt_thread_info *info,
struct mdt_object *o, __u64 *version)
{
- LASSERT(o);
+ 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);
+ *version = dt_version_get(info->mti_env, mdt_obj2dt(o));
+ else
+ *version = ENOENT_VERSION;
+ CDEBUG(D_INODE, "FID "DFID" version is %#llx\n",
+ PFID(mdt_object_fid(o)), *version);
}
/**
spin_unlock(&req->rq_export->exp_lock);
RETURN(-EOVERFLOW);
} else if (pre_ver[idx] != version) {
- CDEBUG(D_INODE, "Version mismatch "LPX64" != "LPX64"\n",
+ CDEBUG(D_INODE, "Version mismatch %#llx != %#llx\n",
pre_ver[idx], version);
spin_lock(&req->rq_export->exp_lock);
req->rq_export->exp_vbr_failed = 1;
* 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, struct lu_name *lname,
- struct lu_fid *fid, int idx)
+static 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;
}
+static inline int mdt_remote_permission_check(struct mdt_thread_info *info)
+{
+ struct lu_ucred *uc = mdt_ucred(info);
+ struct mdt_device *mdt = info->mti_mdt;
+
+ if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) {
+ if (uc->uc_gid != mdt->mdt_enable_remote_dir_gid &&
+ mdt->mdt_enable_remote_dir_gid != -1)
+ return -EPERM;
+ }
+
+ return 0;
+}
+
+/**
+ * mdt_remote_permission: Check whether the remote operation is permitted,
+ *
+ * Only sysadmin can create remote directory / striped directory,
+ * migrate directory and set default stripedEA on directory, unless
+ *
+ * lctl set_param mdt.*.enable_remote_dir_gid=allow_gid.
+ *
+ * param[in] info: mdt_thread_info.
+ *
+ * retval = 0 remote operation is allowed.
+ * < 0 remote operation is denied.
+ */
+static int mdt_remote_permission(struct mdt_thread_info *info)
+{
+ struct md_op_spec *spec = &info->mti_spec;
+ struct lu_attr *attr = &info->mti_attr.ma_attr;
+ struct obd_export *exp = mdt_info_req(info)->rq_export;
+ int rc;
+
+ if (info->mti_rr.rr_opcode == REINT_MIGRATE) {
+ rc = mdt_remote_permission_check(info);
+ if (rc != 0)
+ return rc;
+ }
+
+ if (info->mti_rr.rr_opcode == REINT_CREATE &&
+ (S_ISDIR(attr->la_mode) && spec->u.sp_ea.eadata != NULL &&
+ spec->u.sp_ea.eadatalen != 0)) {
+ const struct lmv_user_md *lum = spec->u.sp_ea.eadata;
+
+ /* Only new clients can create remote dir( >= 2.4) and
+ * striped dir(>= 2.6), old client will return -ENOTSUPP */
+ if (!mdt_is_dne_client(exp))
+ return -ENOTSUPP;
+
+ if (le32_to_cpu(lum->lum_stripe_count) > 1 &&
+ !mdt_is_striped_client(exp))
+ return -ENOTSUPP;
+
+ rc = mdt_remote_permission_check(info);
+ if (rc != 0)
+ return rc;
+ }
+
+ if (info->mti_rr.rr_opcode == REINT_SETATTR) {
+ struct md_attr *ma = &info->mti_attr;
+
+ if ((ma->ma_valid & MA_LMV)) {
+ rc = mdt_remote_permission_check(info);
+ if (rc != 0)
+ return rc;
+ }
+ }
+
+ return 0;
+}
+
+static int mdt_unlock_slaves(struct mdt_thread_info *mti,
+ struct mdt_object *obj, __u64 ibits,
+ struct mdt_lock_handle *s0_lh,
+ struct mdt_object *s0_obj,
+ struct ldlm_enqueue_info *einfo,
+ int decref)
+{
+ union ldlm_policy_data *policy = &mti->mti_policy;
+ struct lustre_handle_array *slave_locks = einfo->ei_cbdata;
+ int i;
+ int rc;
+ ENTRY;
+
+ if (!S_ISDIR(obj->mot_header.loh_attr))
+ RETURN(0);
+
+ /* 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, decref);
+ }
+
+ memset(policy, 0, sizeof(*policy));
+ policy->l_inodebits.bits = ibits;
+
+ if (slave_locks != NULL) {
+ LASSERT(s0_lh != NULL);
+ for (i = 1; i < slave_locks->count; i++) {
+ /* borrow s0_lh temporarily to do mdt unlock */
+ mdt_lock_reg_init(s0_lh, einfo->ei_mode);
+ s0_lh->mlh_rreg_lh = slave_locks->handles[i];
+ mdt_object_unlock(mti, NULL, s0_lh, decref);
+ slave_locks->handles[i].cookie = 0ull;
+ }
+ }
+
+ rc = mo_object_unlock(mti->mti_env, mdt_object_child(obj), einfo,
+ policy);
+ RETURN(rc);
+}
+
+static int mdt_init_slaves(struct mdt_thread_info *mti, struct mdt_object *obj,
+ struct lu_fid *fid)
+{
+ struct lu_buf *buf = &mti->mti_buf;
+ struct lmv_mds_md_v1 *lmv;
+ 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);
+
+ fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[0]);
+
+ 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,
+ enum ldlm_mode mode, __u64 ibits,
+ struct lu_fid *s0_fid,
+ struct mdt_lock_handle *s0_lh,
+ struct mdt_object **s0_objp,
+ struct ldlm_enqueue_info *einfo)
+{
+ union ldlm_policy_data *policy = &mti->mti_policy;
+ int rc;
+ ENTRY;
+
+ memset(einfo, 0, sizeof(*einfo));
+
+ rc = mdt_init_slaves(mti, obj, s0_fid);
+ if (rc <= 0)
+ RETURN(rc);
+
+ LASSERT(S_ISDIR(obj->mot_header.loh_attr));
+
+ if (!lu_fid_eq(s0_fid, mdt_object_fid(obj))) {
+ /* Except migrating object, whose 0_stripe and master
+ * object are the same object, 0_stripe and master
+ * object are different, 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 */
+ *s0_objp = mdt_object_find(mti->mti_env, mti->mti_mdt, s0_fid);
+ if (IS_ERR(*s0_objp))
+ RETURN(PTR_ERR(*s0_objp));
+
+ rc = mdt_reint_object_lock(mti, *s0_objp, s0_lh, ibits, true);
+ if (rc < 0) {
+ mdt_object_put(mti->mti_env, *s0_objp);
+ RETURN(rc);
+ }
+ }
+
+ einfo->ei_type = LDLM_IBITS;
+ einfo->ei_mode = mode;
+ einfo->ei_cb_bl = mdt_remote_blocking_ast;
+ einfo->ei_cb_local_bl = mdt_blocking_ast;
+ einfo->ei_cb_cp = ldlm_completion_ast;
+ einfo->ei_enq_slave = 1;
+ einfo->ei_namespace = mti->mti_mdt->mdt_namespace;
+ 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);
+}
+
/*
* VBR: we save three versions in reply:
* 0 - parent. Check that parent version is the same during replay.
* 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)
+static int mdt_create(struct mdt_thread_info *info)
{
- struct mdt_device *mdt = info->mti_mdt;
- struct mdt_object *parent;
- struct mdt_object *child;
- struct mdt_lock_handle *lh;
- 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;
+ struct mdt_device *mdt = info->mti_mdt;
+ struct mdt_object *parent;
+ struct mdt_object *child;
+ struct mdt_lock_handle *lh;
+ struct mdt_body *repbody;
+ struct md_attr *ma = &info->mti_attr;
+ struct mdt_reint_record *rr = &info->mti_rr;
+ 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));
- if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1))
+ if (!fid_is_md_operative(rr->rr_fid1))
RETURN(-EPERM);
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
- lh = &info->mti_lh[MDT_LH_PARENT];
- mdt_lock_pdo_init(lh, LCK_PW, rr->rr_name, rr->rr_namelen);
-
- parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
- MDS_INODELOCK_UPDATE);
- if (IS_ERR(parent))
- RETURN(PTR_ERR(parent));
-
- rc = mdt_version_get_check_save(info, parent, 0);
- if (rc)
- GOTO(out_put_parent, rc);
-
- /*
- * Check child name version during replay.
- * During create replay a file may exist with same name.
- */
- lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
- rc = mdt_lookup_version_check(info, parent, lname,
- &info->mti_tmp_fid1, 1);
+ 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);
+
+ 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);
+ if (rc)
+ GOTO(put_parent, rc);
+
+ 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(out_put_parent, rc = -EEXIST);
+ GOTO(unlock_parent, rc = -EEXIST);
/* -ENOENT is expected here */
if (rc != -ENOENT)
- GOTO(out_put_parent, rc);
+ 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);
-
- if (mdt_object_remote(child)) {
- struct seq_server_site *ss;
- struct lu_ucred *uc = mdt_ucred(info);
-
- if (!md_capable(uc, CFS_CAP_SYS_ADMIN)) {
- CERROR("%s: Creating remote dir is only "
- "permitted for administrator: rc = %d\n",
- mdt2obd_dev(mdt)->obd_name, -EPERM);
- GOTO(out_put_child, rc = -EPERM);
- }
+ if (unlikely(IS_ERR(child)))
+ GOTO(unlock_parent, rc = PTR_ERR(child));
- ss = mdt_seq_site(mdt);
- if (ss->ss_node_id != 0 &&
- mdt->mdt_enable_remote_dir == 0) {
- CERROR("%s: remote dir is only permitted on"
- " MDT0 or set_param"
- " mdt.*.enable_remote_dir=1\n",
- mdt2obd_dev(mdt)->obd_name);
- GOTO(out_put_child, rc = -EPERM);
- }
- if (!mdt_is_dne_client(mdt_info_req(info)->rq_export)) {
- /* Return -EIO for old client */
- GOTO(out_put_child, rc = -EIO);
- }
+ rc = mdt_remote_permission(info);
+ if (rc != 0)
+ GOTO(put_child, rc);
+
+ ma->ma_need = MA_INODE;
+ ma->ma_valid = 0;
+
+ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
+ OBD_FAIL_MDS_REINT_CREATE_WRITE);
+
+ /* 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(put_child, rc);
+
+ /* Let lower layer know current lock mode. */
+ info->mti_spec.sp_cr_mode = mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
+
+ /*
+ * 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;
+
+ rc = mdo_create(info->mti_env, mdt_object_child(parent), &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)
+ GOTO(put_child, rc);
+
+ /*
+ * On DNE, we need to eliminate dependey between 'mkdir a' and
+ * 'mkdir a/b' if b is a striped directory, to achieve this, two
+ * things are done below:
+ * 1. save child and slaves lock.
+ * 2. if the child is a striped directory, relock parent so to
+ * compare against with COS locks to ensure parent was
+ * committed to disk.
+ */
+ if (mdt_slc_is_enabled(mdt) && S_ISDIR(ma->ma_attr.la_mode)) {
+ struct mdt_lock_handle *lhc;
+ struct mdt_lock_handle *s0_lh;
+ struct mdt_object *s0_obj = NULL;
+ struct ldlm_enqueue_info *einfo;
+ struct lu_fid *s0_fid = &info->mti_tmp_fid1;
+ bool cos_incompat = false;
+
+ rc = mdt_init_slaves(info, child, s0_fid);
+ if (rc > 0) {
+ cos_incompat = true;
+ if (!mdt_object_remote(parent)) {
+ mdt_object_unlock(info, parent, lh, 1);
+ mdt_lock_pdo_init(lh, LCK_PW, &rr->rr_name);
+ rc = mdt_reint_object_lock(info, parent, lh,
+ MDS_INODELOCK_UPDATE,
+ true);
+ if (rc)
+ GOTO(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,
- &RMF_CAPA1);
- LASSERT(ma->ma_capa);
-
- mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
- OBD_FAIL_MDS_REINT_CREATE_WRITE);
-
- /* Version of child will be updated on disk. */
- info->mti_mos = child;
- rc = mdt_version_get_check_save(info, child, 2);
- if (rc)
- GOTO(out_put_child, rc);
-
- /* Let lower layer know current lock mode. */
- info->mti_spec.sp_cr_mode =
- mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
-
- /*
- * 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;
-
- rc = mdo_create(info->mti_env, next, lname,
- 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)
- mdt_pack_attr2body(info, repbody, &ma->ma_attr,
- mdt_object_fid(child));
- }
-out_put_child:
- mdt_object_put(info->mti_env, child);
- } else {
- rc = PTR_ERR(child);
- }
- mdt_create_pack_capa(info, rc, child, repbody);
-out_put_parent:
- mdt_object_unlock_put(info, parent, lh, rc);
- RETURN(rc);
+
+ einfo = &info->mti_einfo;
+ lhc = &info->mti_lh[MDT_LH_CHILD];
+ mdt_lock_handle_init(lhc);
+ mdt_lock_reg_init(lhc, LCK_PW);
+ rc = mdt_reint_object_lock(info, child, lhc,
+ MDS_INODELOCK_UPDATE,
+ cos_incompat);
+ if (rc)
+ GOTO(put_child, rc);
+ mdt_object_unlock(info, child, lhc, rc);
+
+ s0_lh = &info->mti_lh[MDT_LH_LOCAL];
+ mdt_lock_handle_init(s0_lh);
+ mdt_lock_reg_init(s0_lh, LCK_PW);
+ rc = mdt_lock_slaves(info, child, LCK_PW, MDS_INODELOCK_UPDATE,
+ s0_fid, s0_lh, &s0_obj, einfo);
+ mdt_unlock_slaves(info, child, MDS_INODELOCK_UPDATE, s0_lh,
+ s0_obj, einfo, rc);
+ if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_SLAVE_NAME) && rc == -EIO)
+ rc = 0;
+ }
+
+ /* Return fid & attr to client. */
+ if (ma->ma_valid & MA_INODE)
+ mdt_pack_attr2body(info, repbody, &ma->ma_attr,
+ mdt_object_fid(child));
+put_child:
+ mdt_object_put(info->mti_env, child);
+unlock_parent:
+ mdt_object_unlock(info, parent, lh, rc);
+put_parent:
+ mdt_object_put(info->mti_env, parent);
+ RETURN(rc);
}
-int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
- struct md_attr *ma, int flags)
+static int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo,
+ struct md_attr *ma)
{
- 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;
+ struct mdt_lock_handle *lh;
+ int do_vbr = ma->ma_attr.la_valid &
+ (LA_MODE | LA_UID | LA_GID | LA_PROJID | LA_FLAGS);
+ __u64 lockpart = MDS_INODELOCK_UPDATE;
+ struct ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct lu_fid *s0_fid = &info->mti_tmp_fid1;
+ struct mdt_lock_handle *s0_lh = NULL;
+ struct mdt_object *s0_obj = NULL;
+ bool cos_incompat = false;
+ int rc;
+ ENTRY;
- /* attr shouldn't be set on remote object */
- LASSERT(!mdt_object_remote(mo));
+ rc = mdt_init_slaves(info, mo, s0_fid);
+ if (rc > 0)
+ cos_incompat = true;
lh = &info->mti_lh[MDT_LH_PARENT];
mdt_lock_reg_init(lh, LCK_PW);
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_reint_object_lock(info, mo, lh, lockpart, cos_incompat);
+ if (rc != 0)
+ RETURN(rc);
- if (mdt_object_exists(mo) == 0)
- GOTO(out_unlock, rc = -ENOENT);
+ s0_lh = &info->mti_lh[MDT_LH_LOCAL];
+ mdt_lock_reg_init(s0_lh, LCK_PW);
+ rc = mdt_lock_slaves(info, mo, LCK_PW, lockpart, s0_fid, s0_lh, &s0_obj,
+ einfo);
+ if (rc != 0)
+ GOTO(out_unlock, rc);
/* all attrs are packed into mti_attr in unpack_setattr */
mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
/* VBR: update version if attr changed are important for recovery */
if (do_vbr) {
/* update on-disk version of changed object */
- info->mti_mos = mo;
+ 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|LA_PROJID))
+ 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|LA_PROJID))
+ 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, rc);
mdt_object_unlock(info, mo, lh, rc);
return rc;
}
rc = mdt_attr_get_complex(info, mo, ma);
if (rc) {
CERROR("file attribute read error for "DFID": %d.\n",
- PFID(lu_object_fid(&mo->mot_obj.mo_lu)), rc);
+ 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))) {
-
ma->ma_hsm.mh_flags |= HS_DIRTY;
+
rc = mdt_hsm_attr_set(info, mo, &ma->ma_hsm);
- if (rc) {
+ if (rc)
CERROR("file attribute change error for "DFID": %d\n",
- PFID(lu_object_fid(&mo->mot_obj.mo_lu)), rc);
- RETURN(rc);
- }
+ PFID(mdt_object_fid(mo)), rc);
}
RETURN(rc);
struct md_attr *ma = &info->mti_attr;
struct mdt_reint_record *rr = &info->mti_rr;
struct ptlrpc_request *req = mdt_info_req(info);
- struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
- struct mdt_file_data *mfd;
struct mdt_object *mo;
struct mdt_body *repbody;
- int som_au, rc, rc2;
+ int rc, rc2;
ENTRY;
DEBUG_REQ(D_INODE, req, "setattr "DFID" %x", PFID(rr->rr_fid1),
(unsigned int)ma->ma_attr.la_valid);
- if (info->mti_dlm_req)
- ldlm_request_cancel(req, info->mti_dlm_req, 0);
-
- if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1))
- RETURN(-EPERM);
+ if (info->mti_dlm_req)
+ ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
mo = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
if (IS_ERR(mo))
GOTO(out, rc = PTR_ERR(mo));
- /* 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_OPEN_TRUNC)) {
- /* Check write access for the O_TRUNC case */
- if (mdt_write_read(mo) < 0)
- GOTO(out_put, rc = -ETXTBSY);
- }
- } else if (info->mti_ioepoch &&
- (info->mti_ioepoch->flags & MF_EPOCH_OPEN)) {
- /* Truncate case. IOEpoch is opened. */
- rc = mdt_write_get(mo);
- if (rc)
- GOTO(out_put, rc);
+ if (!mdt_object_exists(mo))
+ GOTO(out_put, rc = -ENOENT);
- mfd = mdt_mfd_new();
- if (mfd == NULL) {
- mdt_write_put(mo);
- GOTO(out_put, rc = -ENOMEM);
- }
+ if (mdt_object_remote(mo))
+ GOTO(out_put, rc = -EREMOTE);
- mdt_ioepoch_open(info, mo, 0);
- repbody->ioepoch = mo->mot_ioepoch;
+ if ((ma->ma_attr.la_valid & LA_SIZE) ||
+ (rr->rr_flags & MRF_OPEN_TRUNC)) {
+ /* Check write access for the O_TRUNC case */
+ if (mdt_write_read(mo) < 0)
+ GOTO(out_put, rc = -ETXTBSY);
+ }
- mdt_object_get(info->mti_env, mo);
- mdt_mfd_set_mode(mfd, MDS_FMODE_TRUNC);
- mfd->mfd_object = mo;
- mfd->mfd_xid = req->rq_xid;
+ if ((ma->ma_valid & MA_INODE) && ma->ma_attr.la_valid) {
+ if (ma->ma_valid & MA_LOV)
+ GOTO(out_put, rc = -EPROTO);
- 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;
- }
+ rc = mdt_attr_set(info, mo, ma);
+ if (rc)
+ GOTO(out_put, rc);
+ } else if ((ma->ma_valid & (MA_LOV | MA_LMV)) &&
+ (ma->ma_valid & MA_INODE)) {
+ struct lu_buf *buf = &info->mti_buf;
+ struct mdt_lock_handle *lh;
- som_au = info->mti_ioepoch && info->mti_ioepoch->flags & MF_SOM_CHANGE;
- if (som_au) {
- /* SOM Attribute update case. Find the proper mfd and update
- * SOM attributes on the proper object. */
- LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
- LASSERT(info->mti_ioepoch);
-
- spin_lock(&med->med_open_lock);
- mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
- 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 == MDS_FMODE_SOM);
- LASSERT(!(info->mti_ioepoch->flags & MF_EPOCH_CLOSE));
+ rc = mdt_remote_permission(info);
+ if (rc < 0)
+ GOTO(out_put, rc);
- class_handle_unhash(&mfd->mfd_handle);
- cfs_list_del_init(&mfd->mfd_list);
- spin_unlock(&med->med_open_lock);
+ if (ma->ma_attr.la_valid != 0)
+ GOTO(out_put, rc = -EPROTO);
- mdt_mfd_close(info, mfd);
- } 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);
+ lh = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_reg_init(lh, LCK_PW);
+
+ rc = mdt_object_lock(info, mo, lh, MDS_INODELOCK_XATTR);
+ if (rc != 0)
+ GOTO(out_put, rc);
+
+ if (ma->ma_valid & MA_LOV) {
+ buf->lb_buf = ma->ma_lmm;
+ buf->lb_len = ma->ma_lmm_size;
+ } else {
+ 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,
+ (ma->ma_valid & MA_LOV) ?
+ XATTR_NAME_LOV : XATTR_NAME_DEFAULT_LMV,
+ 0);
+
+ mdt_object_unlock(info, mo, lh, rc);
if (rc)
GOTO(out_put, rc);
- } else
- LBUG();
+ } else {
+ GOTO(out_put, rc = -EPROTO);
+ }
/* If file data is modified, add the dirty flag */
if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
ma->ma_need = MA_INODE;
ma->ma_valid = 0;
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));
-
- if (info->mti_mdt->mdt_opts.mo_oss_capa &&
- exp_connect_flags(info->mti_exp) & OBD_CONNECT_OSS_CAPA &&
- S_ISREG(lu_object_attr(&mo->mot_obj.mo_lu)) &&
- (ma->ma_attr.la_valid & LA_SIZE) && !som_au) {
- struct lustre_capa *capa;
+ if (rc != 0)
+ GOTO(out_put, rc);
- capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
- LASSERT(capa);
- capa->lc_opc = CAPA_OPC_OSS_DEFAULT | CAPA_OPC_OSS_TRUNC;
- rc = mo_capa_get(info->mti_env, mdt_object_child(mo), capa, 0);
- if (rc)
- GOTO(out_put, rc);
- repbody->valid |= OBD_MD_FLOSSCAPA;
- }
+ mdt_pack_attr2body(info, repbody, &ma->ma_attr, mdt_object_fid(mo));
EXIT;
out_put:
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE))
RETURN(err_serious(-ESTALE));
- if (info->mti_dlm_req)
- ldlm_request_cancel(mdt_info_req(info), info->mti_dlm_req, 0);
+ if (info->mti_dlm_req)
+ ldlm_request_cancel(mdt_info_req(info),
+ info->mti_dlm_req, 0, LATF_SKIP);
- LASSERT(info->mti_rr.rr_namelen > 0);
- switch (info->mti_attr.ma_attr.la_mode & S_IFMT) {
+ 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;
break;
default:
CERROR("%s: Unsupported mode %o\n",
- mdt2obd_dev(info->mti_mdt)->obd_name,
+ mdt_obd_name(info->mti_mdt),
info->mti_attr.ma_attr.la_mode);
RETURN(err_serious(-EOPNOTSUPP));
}
- rc = mdt_md_create(info);
+ rc = mdt_create(info);
RETURN(rc);
}
* 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_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;
+ 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 ldlm_enqueue_info *einfo = &info->mti_einfo;
+ struct lu_fid *s0_fid = &info->mti_tmp_fid2;
+ struct mdt_lock_handle *s0_lh = NULL;
+ struct mdt_object *s0_obj = NULL;
+ __u64 lock_ibits;
+ bool cos_incompat = false;
+ int no_name = 0;
+ int rc;
+ 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 (info->mti_dlm_req)
+ ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
- if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK))
- RETURN(err_serious(-ENOENT));
+ 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))
+ if (!fid_is_md_operative(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);
- }
+ if (IS_ERR(mp))
+ RETURN(PTR_ERR(mp));
- 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);
-
+ cos_incompat = true;
} 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);
+ GOTO(put_parent, rc);
}
- /* step 2: find & lock the child */
+relock:
+ parent_lh = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_pdo_init(parent_lh, LCK_PW, &rr->rr_name);
+ rc = mdt_reint_object_lock(info, mp, parent_lh, MDS_INODELOCK_UPDATE,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(put_parent, rc);
+
/* 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);
+ 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_obf(child_fid) || fid_is_dot_lustre(child_fid))
+ if (!fid_is_md_operative(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 (!cos_incompat && mdt_init_slaves(info, mc, s0_fid) > 0) {
+ cos_incompat = true;
+ mdt_object_put(info->mti_env, mc);
+ mdt_object_unlock(info, mp, parent_lh, -EAGAIN);
+ goto relock;
+ }
+
+ child_lh = &info->mti_lh[MDT_LH_CHILD];
+ mdt_lock_reg_init(child_lh, LCK_EX);
+ if (info->mti_spec.sp_rm_entry) {
+ struct lu_ucred *uc = mdt_ucred(info);
+
+ if (!mdt_is_dne_client(req->rq_export))
+ /* Return -ENOTSUPP for old client */
+ GOTO(put_child, rc = -ENOTSUPP);
+
+ if (!md_capable(uc, CFS_CAP_SYS_ADMIN))
+ GOTO(put_child, rc = -EPERM);
+
+ ma->ma_need = MA_INODE;
+ ma->ma_valid = 0;
+ rc = mdo_unlink(info->mti_env, mdt_object_child(mp),
+ NULL, &rr->rr_name, ma, no_name);
+ GOTO(put_child, rc);
+ }
+
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)));
+ 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 %s: "DFID" is another MDT\n",
- mdt2obd_dev(info->mti_mdt)->obd_name,
- (char *)rr->rr_name, PFID(mdt_object_fid(mc)));
+ 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 -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",
- mdt2obd_dev(info->mti_mdt)->obd_name,
- -EPERM);
- GOTO(put_child, rc = -EPERM);
- }
+ /* Return -ENOTSUPP for old client */
+ GOTO(put_child, rc = -ENOTSUPP);
- 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);
- 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);
+ mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_LOOKUP);
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);
+ repbody->mbo_fid1 = *mdt_object_fid(mc);
+ repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
GOTO(unlock_child, 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);
- GOTO(put_child, rc = -EPERM);
}
+ /* 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. */
+ lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE;
+ if (mdt_object_remote(mp)) {
+ /* Enqueue lookup lock from parent MDT */
+ rc = mdt_remote_object_lock(info, mp, mdt_object_fid(mc),
+ &child_lh->mlh_rreg_lh,
+ child_lh->mlh_rreg_mode,
+ MDS_INODELOCK_LOOKUP, false);
+ if (rc != ELDLM_OK)
+ GOTO(put_child, rc);
- rc = mdt_object_lock(info, mc, child_lh, MDS_INODELOCK_FULL,
- MDT_CROSS_LOCK);
- if (rc != 0) {
- GOTO(put_child, rc);
+ lock_ibits &= ~MDS_INODELOCK_LOOKUP;
}
- 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);
+ rc = mdt_reint_object_lock(info, mc, child_lh, lock_ibits,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(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;
+
+ 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_fid,
+ 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);
+
+ 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 (rc == 0)
+ mdt_handle_last_unlink(info, mc, ma);
if (ma->ma_valid & MA_INODE) {
switch (ma->ma_attr.la_mode & S_IFMT) {
}
EXIT;
+
unlock_child:
+ mdt_unlock_slaves(info, mc, MDS_INODELOCK_UPDATE, s0_lh, s0_obj, einfo,
+ rc);
mdt_object_unlock(info, mc, child_lh, rc);
put_child:
mdt_object_put(info->mti_env, mc);
mdt_object_unlock(info, mp, parent_lh, rc);
put_parent:
mdt_object_put(info->mti_env, mp);
-out:
return rc;
}
* name.
*/
static int mdt_reint_link(struct mdt_thread_info *info,
- struct mdt_lock_handle *lhc)
+ 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;
+ 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;
+ bool cos_incompat;
+ 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 (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_dlm_req)
+ ldlm_request_cancel(req, info->mti_dlm_req, 0, LATF_SKIP);
- /* Invalid case so return error immediately instead of
- * processing it */
- if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2))
- RETURN(-EPERM);
+ /* 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_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1) ||
- fid_is_obf(rr->rr_fid2) || fid_is_dot_lustre(rr->rr_fid2))
+ 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_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));
-
- 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);
+ /* step 1: find target parent dir */
+ mp = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
+ if (IS_ERR(mp))
+ RETURN(PTR_ERR(mp));
+
+ rc = mdt_version_get_check_save(info, mp, 0);
+ if (rc)
+ GOTO(put_parent, rc);
+
+ /* step 2: find source */
+ ms = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
+ if (IS_ERR(ms))
+ GOTO(put_parent, rc = PTR_ERR(ms));
+
+ if (!mdt_object_exists(ms)) {
+ CDEBUG(D_INFO, "%s: "DFID" does not exist.\n",
+ mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1));
+ GOTO(put_source, rc = -ENOENT);
}
- 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);
- }
+ cos_incompat = (mdt_object_remote(mp) || mdt_object_remote(ms));
- /* 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);
- }
+ lhp = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_pdo_init(lhp, LCK_PW, &rr->rr_name);
+ rc = mdt_reint_object_lock(info, mp, lhp, MDS_INODELOCK_UPDATE,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(put_source, rc);
- rc = mdo_link(info->mti_env, mdt_object_child(mp),
- mdt_object_child(ms), lname, ma);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME3, 5);
- if (rc == 0)
+ lhs = &info->mti_lh[MDT_LH_CHILD];
+ mdt_lock_reg_init(lhs, LCK_EX);
+ rc = mdt_reint_object_lock(info, ms, lhs,
+ MDS_INODELOCK_UPDATE | MDS_INODELOCK_XATTR,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(unlock_parent, rc);
+
+ /* step 3: link it */
+ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
+ OBD_FAIL_MDS_REINT_LINK_WRITE);
+
+ tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(ms));
+ rc = mdt_version_get_check_save(info, ms, 1);
+ if (rc)
+ GOTO(unlock_source, rc);
+
+ /** 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(unlock_source, 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(unlock_source, 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, ms, lhs, rc);
-out_unlock_parent:
- mdt_object_unlock_put(info, mp, lhp, rc);
- return rc;
+ EXIT;
+unlock_source:
+ mdt_object_unlock(info, ms, lhs, rc);
+unlock_parent:
+ mdt_object_unlock(info, mp, lhp, rc);
+put_source:
+ mdt_object_put(info->mti_env, ms);
+put_parent:
+ mdt_object_put(info->mti_env, mp);
+ return rc;
}
/**
* 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_lock_handle *lh,
+ struct mdt_object *obj, __u64 ibits,
+ bool cos_incompat)
{
- struct ldlm_res_id *res_id = &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_id);
- 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_id, LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB,
- &info->mti_exp->exp_handle.h_cookie);
- return rc;
+ struct ldlm_res_id *res = &info->mti_res_id;
+ struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
+ union ldlm_policy_data *policy = &info->mti_policy;
+ __u64 dlmflags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
+ 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;
+ if (cos_incompat &&
+ (lh->mlh_reg_mode == LCK_PW || lh->mlh_reg_mode == LCK_EX))
+ dlmflags |= LDLM_FL_COS_INCOMPAT;
+ /*
+ * 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, dlmflags, &info->mti_exp->exp_handle.h_cookie);
+ return rc;
}
+/**
+ * Get BFL lock for rename or migrate process.
+ **/
static int mdt_rename_lock(struct mdt_thread_info *info,
- struct lustre_handle *lh)
+ struct lustre_handle *lh)
{
- 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;
+ int rc;
ENTRY;
- fid_build_reg_res_name(&LUSTRE_BFL_FID, res_id);
-
- memset(policy, 0, sizeof *policy);
- policy->l_inodebits.bits = MDS_INODELOCK_UPDATE;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 4, 53, 0)
- /* In phase I, we will not do cross-rename, so local BFL lock would
- * be enough
- */
- 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,
- LVB_T_NONE,
- &info->mti_exp->exp_handle.h_cookie,
- lh);
-#else
-#warning "Local rename lock is invalid for DNE phase II."
-#endif
- RETURN(rc);
+ if (mdt_seq_site(info->mti_mdt)->ss_node_id != 0) {
+ 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));
+
+ rc = mdt_remote_object_lock(info, obj,
+ &LUSTRE_BFL_FID, lh,
+ LCK_EX,
+ MDS_INODELOCK_UPDATE, false);
+ mdt_object_put(info->mti_env, obj);
+ } else {
+ struct ldlm_namespace *ns = info->mti_mdt->mdt_namespace;
+ union ldlm_policy_data *policy = &info->mti_policy;
+ struct ldlm_res_id *res_id = &info->mti_res_id;
+ __u64 flags = 0;
+
+ 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);
+ }
+ 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_is_subdir(struct mdt_thread_info *info,
+ struct mdt_object *dir,
+ 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 dir_fid = dir->mot_header.loh_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;
+
+ if (!mdt_object_exists(dir))
+ RETURN(-ENOENT);
+
+ rc = mdo_is_subdir(info->mti_env, mdt_object_child(dir),
+ fid, &dir_fid);
+ if (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(&dir_fid, fid))
+ rc = -EINVAL;
+ }
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)
+/* Update object linkEA */
+struct mdt_lock_list {
+ struct mdt_object *mll_obj;
+ struct mdt_lock_handle mll_lh;
+ struct list_head mll_list;
+};
+
+static void mdt_unlock_list(struct mdt_thread_info *info,
+ struct list_head *list, int rc)
{
- 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;
+ 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);
+ }
+}
- if (info->mti_dlm_req)
- ldlm_request_cancel(req, info->mti_dlm_req, 0);
+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 = { NULL };
+ int count;
+ int retry_count;
+ int rc;
+ ENTRY;
- 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);
+ if (S_ISDIR(lu_object_attr(&obj->mot_obj)))
+ RETURN(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);
+ buf = lu_buf_check_and_alloc(buf, PATH_MAX);
+ if (buf->lb_buf == NULL)
+ RETURN(-ENOMEM);
- rc = mdt_rename_lock(info, &rename_lh);
- if (rc) {
- CERROR("Can't lock FS for rename, rc %d\n", rc);
+ ldata.ld_buf = buf;
+ rc = mdt_links_read(info, obj, &ldata);
+ if (rc != 0) {
+ if (rc == -ENOENT || rc == -ENODATA)
+ rc = 0;
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));
-
- 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));
-
- /* 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);
+ /* ignore the migrating parent(@pobj) */
+ retry_count = ldata.ld_leh->leh_reccount - 1;
+
+again:
+ LASSERT(ldata.ld_leh != NULL);
+ ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1);
+ for (count = 0; count < ldata.ld_leh->leh_reccount; count++) {
+ struct mdt_device *mdt = info->mti_mdt;
+ struct mdt_object *mdt_pobj;
+ struct mdt_lock_list *mll;
+ struct lu_name name;
+ struct lu_fid fid;
+ __u64 ibits;
+
+ linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
+ &name, &fid);
+ mdt_pobj = mdt_object_find(info->mti_env, mdt, &fid);
+ if (IS_ERR(mdt_pobj)) {
+ CWARN("%s: cannot find obj "DFID": rc = %ld\n",
+ mdt_obd_name(mdt), PFID(&fid), PTR_ERR(mdt_pobj));
+ goto next;
+ }
- 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);
+ if (!mdt_object_exists(mdt_pobj)) {
+ CDEBUG(D_INFO, "%s: obj "DFID" does not exist\n",
+ mdt_obd_name(mdt), PFID(&fid));
+ mdt_object_put(info->mti_env, mdt_pobj);
+ goto next;
+ }
+
+ /* Check if the object already exists in the list */
+ list_for_each_entry(mll, lock_list, mll_list) {
+ if (mll->mll_obj == mdt_pobj) {
+ mdt_object_put(info->mti_env, mdt_pobj);
+ goto next;
+ }
+ }
+
+ if (mdt_pobj == pobj) {
+ CDEBUG(D_INFO, "%s: skipping parent obj "DFID"\n",
+ mdt_obd_name(mdt), PFID(&fid));
+ mdt_object_put(info->mti_env, mdt_pobj);
+ goto next;
+ }
+
+ OBD_ALLOC_PTR(mll);
+ if (mll == NULL) {
+ mdt_object_put(info->mti_env, mdt_pobj);
+ GOTO(out, rc = -ENOMEM);
+ }
+
+ /* Since this needs to lock all of objects in linkea, to avoid
+ * deadlocks, because it does not follow parent-child order as
+ * other MDT operation, let's use try_lock here and if the lock
+ * cannot be gotten because of conflicting locks, then drop all
+ * current locks, send an AST to the client, and start again. */
+ mdt_lock_pdo_init(&mll->mll_lh, LCK_PW, &name);
+ ibits = 0;
+ rc = mdt_object_lock_try(info, mdt_pobj, &mll->mll_lh, &ibits,
+ MDS_INODELOCK_UPDATE, true);
+ if (!(ibits & MDS_INODELOCK_UPDATE)) {
+ mdt_unlock_list(info, lock_list, rc);
+
+ CDEBUG(D_INFO, "%s: busy lock on "DFID" %s retry %d\n",
+ mdt_obd_name(mdt), PFID(&fid), name.ln_name,
+ retry_count);
+
+ if (retry_count == 0) {
+ mdt_object_put(info->mti_env, mdt_pobj);
+ OBD_FREE_PTR(mll);
+ GOTO(out, rc = -EBUSY);
+ }
+
+ rc = mdt_object_lock(info, mdt_pobj, &mll->mll_lh,
+ MDS_INODELOCK_UPDATE);
+ if (rc != 0) {
+ mdt_object_put(info->mti_env, mdt_pobj);
+ OBD_FREE_PTR(mll);
+ GOTO(out, rc);
+ }
+
+ if (mdt_object_remote(mdt_pobj)) {
+ struct ldlm_lock *lock;
+
+ /* For remote object, Set lock to cb_atomic,
+ * so lock can be released in blocking_ast()
+ * immediately, then the next try_lock will
+ * have better chance to succeds */
+ lock =
+ ldlm_handle2lock(&mll->mll_lh.mlh_rreg_lh);
+ LASSERT(lock != NULL);
+ lock_res_and_lock(lock);
+ ldlm_set_atomic_cb(lock);
+ unlock_res_and_lock(lock);
+ LDLM_LOCK_PUT(lock);
}
+ mdt_object_unlock_put(info, mdt_pobj, &mll->mll_lh, rc);
+ OBD_FREE_PTR(mll);
+ retry_count--;
+ goto again;
}
+ rc = 0;
+ INIT_LIST_HEAD(&mll->mll_list);
+ mll->mll_obj = mdt_pobj;
+ list_add_tail(&mll->mll_list, lock_list);
+next:
+ ldata.ld_lee = (struct link_ea_entry *)((char *)ldata.ld_lee +
+ ldata.ld_reclen);
}
+out:
+ if (rc != 0)
+ mdt_unlock_list(info, lock_list, rc);
+ RETURN(rc);
+}
- /* 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);
+/* 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;
+ __u64 lock_ibits;
+ struct ldlm_lock *lease = NULL;
+ bool lock_open_sem = false;
+ int rc;
+ ENTRY;
+
+ CDEBUG(D_INODE, "migrate "DFID"/"DNAME" to "DFID"\n", PFID(rr->rr_fid1),
+ PNAME(&rr->rr_name), PFID(rr->rr_fid2));
- if (lu_fid_eq(old_fid, rr->rr_fid1) || lu_fid_eq(old_fid, rr->rr_fid2))
- GOTO(out_unlock_target, rc = -EINVAL);
+ /* 1: lock the source dir. */
+ msrcdir = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid1);
+ if (IS_ERR(msrcdir)) {
+ CDEBUG(D_OTHER, "%s: cannot find source dir "DFID" : rc = %d\n",
+ mdt_obd_name(info->mti_mdt), PFID(rr->rr_fid1),
+ (int)PTR_ERR(msrcdir));
+ RETURN(PTR_ERR(msrcdir));
+ }
+
+ lh_dirp = &info->mti_lh[MDT_LH_PARENT];
+ mdt_lock_pdo_init(lh_dirp, LCK_PW, &rr->rr_name);
+ rc = mdt_reint_object_lock(info, msrcdir, lh_dirp, MDS_INODELOCK_UPDATE,
+ true);
+ if (rc)
+ GOTO(out_put_parent, rc);
+
+ if (!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 (fid_is_obf(old_fid) || fid_is_dot_lustre(old_fid))
- GOTO(out_unlock_target, rc = -EPERM);
+ 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);
+
+ if (lu_fid_eq(old_fid, &info->mti_mdt->mdt_md_root_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_target, rc = PTR_ERR(mold));
+ GOTO(out_unlock_parent, 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);
+ CDEBUG(D_OTHER, "%s: source "DFID" is on the remote MDT\n",
+ mdt_obd_name(info->mti_mdt), PFID(old_fid));
+ GOTO(out_put_child, rc = -EREMOTE);
}
- 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);
- }
+ if (S_ISREG(lu_object_attr(&mold->mot_obj)) &&
+ !mdt_object_remote(msrcdir)) {
+ CDEBUG(D_OTHER, "%s: parent "DFID" is still on the same"
+ " MDT, which should be migrated first:"
+ " rc = %d\n", mdt_obd_name(info->mti_mdt),
+ PFID(mdt_object_fid(msrcdir)), -EPERM);
+ GOTO(out_put_child, rc = -EPERM);
+ }
- 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);
+ rc = mdt_remote_permission(info);
+ if (rc != 0)
+ GOTO(out_put_child, rc);
- if (lu_fid_eq(new_fid, rr->rr_fid1) ||
- lu_fid_eq(new_fid, rr->rr_fid2))
- GOTO(out_unlock_old, rc = -EINVAL);
+ /* 3: iterate the linkea of the object and lock all of the objects */
+ INIT_LIST_HEAD(&lock_list);
+ rc = mdt_lock_objects_in_linkea(info, mold, msrcdir, &lock_list);
+ if (rc != 0)
+ GOTO(out_put_child, rc);
- if (fid_is_obf(new_fid) || fid_is_dot_lustre(new_fid))
- GOTO(out_unlock_old, rc = -EPERM);
+ if (info->mti_spec.sp_migrate_close) {
+ struct close_data *data;
+ struct mdt_body *repbody;
+ bool lease_broken = false;
+
+ if (!req_capsule_field_present(info->mti_pill, &RMF_MDT_EPOCH,
+ RCL_CLIENT) ||
+ !req_capsule_field_present(info->mti_pill, &RMF_CLOSE_DATA,
+ RCL_CLIENT))
+ GOTO(out_lease, rc = -EPROTO);
+
+ data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
+ if (data == NULL)
+ GOTO(out_lease, rc = -EPROTO);
+
+ lease = ldlm_handle2lock(&data->cd_handle);
+ if (lease == NULL)
+ GOTO(out_lease, rc = -ESTALE);
+
+ /* try to hold open_sem so that nobody else can open the file */
+ if (!down_write_trylock(&mold->mot_open_sem)) {
+ ldlm_lock_cancel(lease);
+ GOTO(out_lease, rc = -EBUSY);
+ }
+
+ lock_open_sem = true;
+ /* Check if the lease open lease has already canceled */
+ lock_res_and_lock(lease);
+ lease_broken = ldlm_is_cancel(lease);
+ unlock_res_and_lock(lease);
+
+ LDLM_DEBUG(lease, DFID " lease broken? %d",
+ PFID(mdt_object_fid(mold)), lease_broken);
+
+ /* Cancel server side lease. Client side counterpart should
+ * have been cancelled. It's okay to cancel it now as we've
+ * held mot_open_sem. */
+ ldlm_lock_cancel(lease);
+
+ if (lease_broken)
+ GOTO(out_lease, rc = -EAGAIN);
+out_lease:
+ rc = mdt_close_internal(info, mdt_info_req(info), NULL);
+ repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
+ repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
+ if (rc != 0)
+ GOTO(out_unlock_list, rc);
+ }
- 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));
+ /* 4: lock of the object migrated object */
+ lh_childp = &info->mti_lh[MDT_LH_OLD];
+ mdt_lock_reg_init(lh_childp, LCK_EX);
+ lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
+ MDS_INODELOCK_LAYOUT;
+ if (mdt_object_remote(msrcdir)) {
+ /* Enqueue lookup lock from the parent MDT */
+ rc = mdt_remote_object_lock(info, msrcdir, mdt_object_fid(mold),
+ &lh_childp->mlh_rreg_lh,
+ lh_childp->mlh_rreg_mode,
+ MDS_INODELOCK_LOOKUP, false);
+ if (rc != ELDLM_OK)
+ GOTO(out_unlock_list, rc);
+
+ lock_ibits &= ~MDS_INODELOCK_LOOKUP;
+ }
+
+ rc = mdt_reint_object_lock(info, mold, lh_childp, lock_ibits, true);
+ if (rc != 0)
+ GOTO(out_unlock_child, rc);
+
+ /* Migration is incompatible with HSM. */
+ ma->ma_need = MA_HSM;
+ ma->ma_valid = 0;
+ rc = mdt_attr_get_complex(info, mold, ma);
+ if (rc != 0)
+ GOTO(out_unlock_child, rc);
+
+ if ((ma->ma_valid & MA_HSM) && ma->ma_hsm.mh_flags != 0) {
+ rc = -ENOSYS;
+ CDEBUG(D_OTHER,
+ "%s: cannot migrate HSM archived file "DFID": rc = %d\n",
+ mdt_obd_name(info->mti_mdt), PFID(old_fid), rc);
+ GOTO(out_unlock_child, rc);
+ }
+
+ ma->ma_need = MA_LMV;
+ ma->ma_valid = 0;
+ ma->ma_lmv = (union lmv_mds_md *)info->mti_xattr_buf;
+ ma->ma_lmv_size = sizeof(info->mti_xattr_buf);
+ rc = mdt_stripe_get(info, mold, ma, XATTR_NAME_LMV);
+ if (rc != 0)
+ GOTO(out_unlock_child, rc);
+
+ if ((ma->ma_valid & MA_LMV)) {
+ struct lmv_mds_md_v1 *lmm1;
+
+ lmv_le_to_cpu(ma->ma_lmv, ma->ma_lmv);
+ lmm1 = &ma->ma_lmv->lmv_md_v1;
+ if (!(lmm1->lmv_hash_type & LMV_HASH_FLAG_MIGRATION)) {
+ CDEBUG(D_OTHER, "%s: can not migrate striped dir "DFID
+ ": rc = %d\n", mdt_obd_name(info->mti_mdt),
+ PFID(mdt_object_fid(mold)), -EPERM);
+ GOTO(out_unlock_child, rc = -EPERM);
+ }
+
+ 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)) {
+ CDEBUG(D_OTHER,
+ "%s: "DFID" being migrated is on this MDT:"
+ " rc = %d\n", mdt_obd_name(info->mti_mdt),
+ PFID(rr->rr_fid2), -EPERM);
+ GOTO(out_put_new, rc = -EPERM);
+ }
+
+ lh_tgtp = &info->mti_lh[MDT_LH_CHILD];
+ mdt_lock_reg_init(lh_tgtp, LCK_EX);
+ rc = mdt_remote_object_lock(info, mnew,
+ mdt_object_fid(mnew),
+ &lh_tgtp->mlh_rreg_lh,
+ lh_tgtp->mlh_rreg_mode,
+ MDS_INODELOCK_UPDATE, false);
+ if (rc != 0) {
+ lh_tgtp = NULL;
+ GOTO(out_put_new, rc);
+ }
+ } else {
+ mnew = mdt_object_find(info->mti_env, info->mti_mdt,
+ rr->rr_fid2);
+ if (IS_ERR(mnew))
+ GOTO(out_unlock_child, rc = PTR_ERR(mnew));
+ if (!mdt_object_remote(mnew)) {
+ CDEBUG(D_OTHER, "%s: Migration "DFID" is on this MDT:"
+ " rc = %d\n", mdt_obd_name(info->mti_mdt),
+ PFID(rr->rr_fid2), -EXDEV);
+ GOTO(out_put_new, rc = -EXDEV);
+ }
+ }
+
+ /* 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:
+ /* we don't really modify linkea objects, so we can safely decref these
+ * locks, and this can avoid saving them as COS locks, which may prevent
+ * subsequent migrate. */
+ mdt_unlock_list(info, &lock_list, 1);
+ if (lease != NULL) {
+ ldlm_reprocess_all(lease->l_resource);
+ LDLM_LOCK_PUT(lease);
+ }
+
+ if (lock_open_sem)
+ up_write(&mold->mot_open_sem);
+out_put_child:
+ mdt_object_put(info->mti_env, mold);
+out_unlock_parent:
+ mdt_object_unlock(info, msrcdir, lh_dirp, rc);
+out_put_parent:
+ mdt_object_put(info->mti_env, msrcdir);
+
+ RETURN(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;
+
+ dir = mdt_object_find(info->mti_env, info->mti_mdt, fid);
+ if (IS_ERR(dir))
+ RETURN(dir);
+
+ /* check early, the real version will be saved after locking */
+ rc = mdt_version_get_check(info, dir, idx);
+ if (rc)
+ GOTO(out_put, rc);
+
+ RETURN(dir);
+out_put:
+ mdt_object_put(info->mti_env, dir);
+ return ERR_PTR(rc);
+}
+
+static int mdt_object_lock_save(struct mdt_thread_info *info,
+ struct mdt_object *dir,
+ struct mdt_lock_handle *lh,
+ int idx, bool cos_incompat)
+{
+ int rc;
+
+ /* we lock the target dir if it is local */
+ rc = mdt_reint_object_lock(info, dir, lh, MDS_INODELOCK_UPDATE,
+ cos_incompat);
+ if (rc != 0)
+ return rc;
+
+ /* get and save correct version after locking */
+ mdt_version_get_save(info, dir, idx);
+ return 0;
+}
+
+/*
+ * VBR: rename versions in reply: 0 - srcdir parent; 1 - tgtdir parent;
+ * 2 - srcdir child; 3 - tgtdir child.
+ * Update on disk version of srcdir 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;
+ __u64 lock_ibits;
+ bool reverse = false;
+ bool cos_incompat;
+ 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));
+
+ /* find both parents. */
+ msrcdir = mdt_object_find_check(info, rr->rr_fid1, 0);
+ if (IS_ERR(msrcdir))
+ RETURN(PTR_ERR(msrcdir));
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME3, 5);
+
+ if (lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
+ mtgtdir = msrcdir;
+ mdt_object_get(info->mti_env, mtgtdir);
+ } else {
+ /* Check if the @msrcdir is not a child of the @mtgtdir,
+ * otherwise a reverse locking must take place. */
+ rc = mdt_is_subdir(info, msrcdir, rr->rr_fid2);
+ if (rc == -EINVAL)
+ reverse = true;
+ else if (rc)
+ GOTO(out_put_srcdir, rc);
+
+ mtgtdir = mdt_object_find_check(info, rr->rr_fid2, 1);
+ if (IS_ERR(mtgtdir))
+ GOTO(out_put_srcdir, rc = PTR_ERR(mtgtdir));
+ }
+
+ /* source needs to be looked up after locking source parent, otherwise
+ * this rename may race with unlink source, and cause rename hang, see
+ * sanityn.sh 55b, so check parents first, if later we found source is
+ * remote, relock parents. */
+ cos_incompat = (mdt_object_remote(msrcdir) ||
+ mdt_object_remote(mtgtdir));
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME4, 5);
+
+ /* lock parents in the proper order. */
+ lh_srcdirp = &info->mti_lh[MDT_LH_PARENT];
+ lh_tgtdirp = &info->mti_lh[MDT_LH_CHILD];
+
+relock:
+ mdt_lock_pdo_init(lh_srcdirp, LCK_PW, &rr->rr_name);
+ mdt_lock_pdo_init(lh_tgtdirp, LCK_PW, &rr->rr_tgt_name);
+
+ if (reverse) {
+ rc = mdt_object_lock_save(info, mtgtdir, lh_tgtdirp, 1,
+ cos_incompat);
+ if (rc)
+ GOTO(out_put_tgtdir, rc);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME, 5);
+
+ rc = mdt_object_lock_save(info, msrcdir, lh_srcdirp, 0,
+ cos_incompat);
+ if (rc != 0) {
+ mdt_object_unlock(info, mtgtdir, lh_tgtdirp, rc);
+ GOTO(out_put_tgtdir, rc);
+ }
+ } else {
+ rc = mdt_object_lock_save(info, msrcdir, lh_srcdirp, 0,
+ cos_incompat);
+ if (rc)
+ GOTO(out_put_tgtdir, rc);
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME, 5);
+
+ if (mtgtdir != msrcdir) {
+ rc = mdt_object_lock_save(info, mtgtdir, lh_tgtdirp, 1,
+ cos_incompat);
+ } else if (lh_srcdirp->mlh_pdo_hash !=
+ lh_tgtdirp->mlh_pdo_hash) {
+ rc = mdt_pdir_hash_lock(info, lh_tgtdirp, mtgtdir,
+ MDS_INODELOCK_UPDATE,
+ cos_incompat);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PDO_LOCK2, 10);
+ }
+ if (rc != 0) {
+ mdt_object_unlock(info, msrcdir, lh_srcdirp, rc);
+ GOTO(out_put_tgtdir, rc);
+ }
+ }
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME4, 5);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_RENAME2, 5);
+
+ /* find mold 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. */
+ if (mtgtdir != msrcdir) {
+ rc = mdt_is_subdir(info, mtgtdir, 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);
+
+ if (!cos_incompat && mdt_object_remote(mold)) {
+ cos_incompat = true;
+ mdt_object_put(info->mti_env, mold);
+ mdt_object_unlock(info, mtgtdir, lh_tgtdirp, -EAGAIN);
+ mdt_object_unlock(info, msrcdir, lh_srcdirp, -EAGAIN);
+ goto relock;
+ }
+
+ /* find mnew object:
+ * mnew 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);
+
+ 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)) {
- 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);
+ struct mdt_body *repbody;
+
+ /* Always send rename req to the target child MDT */
+ repbody = req_capsule_server_get(info->mti_pill,
+ &RMF_MDT_BODY);
+ LASSERT(repbody != NULL);
+ repbody->mbo_fid1 = *new_fid;
+ repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
+ GOTO(out_put_new, rc = -EXDEV);
+ }
+ /* Before locking the target dir, check we do not replace
+ * a dir with a non-dir, otherwise it may deadlock with
+ * link op which tries to create a link in this dir
+ * back to this non-dir. */
+ if (S_ISDIR(lu_object_attr(&mnew->mot_obj)) &&
+ !S_ISDIR(lu_object_attr(&mold->mot_obj)))
+ GOTO(out_put_new, rc = -EISDIR);
+
+ lh_oldp = &info->mti_lh[MDT_LH_OLD];
+ mdt_lock_reg_init(lh_oldp, LCK_EX);
+ lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_XATTR;
+ if (mdt_object_remote(msrcdir)) {
+ /* Enqueue lookup lock from the parent MDT */
+ rc = mdt_remote_object_lock(info, msrcdir,
+ mdt_object_fid(mold),
+ &lh_oldp->mlh_rreg_lh,
+ lh_oldp->mlh_rreg_mode,
+ MDS_INODELOCK_LOOKUP,
+ false);
+ if (rc != ELDLM_OK)
+ GOTO(out_put_new, rc);
+
+ lock_ibits &= ~MDS_INODELOCK_LOOKUP;
}
- 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);
- }
+ rc = mdt_reint_object_lock(info, mold, lh_oldp, lock_ibits,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(out_unlock_old, rc);
+
+ /* Check if @msrcdir is subdir of @mnew, before locking child
+ * to avoid reverse locking. */
+ if (mtgtdir != msrcdir) {
+ rc = mdt_is_subdir(info, msrcdir, new_fid);
+ if (rc)
+ GOTO(out_unlock_old, rc);
+ }
- /* step 5: rename it */
- mdt_reint_init_ma(info, ma);
+ /* 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_reint_object_lock(info, mnew, lh_newp,
+ MDS_INODELOCK_LOOKUP |
+ MDS_INODELOCK_UPDATE,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(out_unlock_old, rc);
+
+ /* get and save version after locking */
+ mdt_version_get_save(info, mnew, 3);
+ } else if (rc != -EREMOTE && rc != -ENOENT) {
+ GOTO(out_put_old, rc);
+ } else {
+ lh_oldp = &info->mti_lh[MDT_LH_OLD];
+ mdt_lock_reg_init(lh_oldp, LCK_EX);
+ lock_ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_XATTR;
+ if (mdt_object_remote(msrcdir)) {
+ /* Enqueue lookup lock from the parent MDT */
+ rc = mdt_remote_object_lock(info, msrcdir,
+ mdt_object_fid(mold),
+ &lh_oldp->mlh_rreg_lh,
+ lh_oldp->mlh_rreg_mode,
+ MDS_INODELOCK_LOOKUP,
+ false);
+ if (rc != ELDLM_OK)
+ GOTO(out_put_old, rc);
+
+ lock_ibits &= ~MDS_INODELOCK_LOOKUP;
+ }
- mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
- OBD_FAIL_MDS_REINT_RENAME_WRITE);
+ rc = mdt_reint_object_lock(info, mold, lh_oldp, lock_ibits,
+ cos_incompat);
+ if (rc != 0)
+ GOTO(out_unlock_old, rc);
+ mdt_enoent_version_save(info, 3);
+ }
- /* Check if @dst is subdir of @src. */
- rc = mdt_rename_sanity(info, old_fid);
- if (rc)
- GOTO(out_unlock_new, rc);
+ /* step 5: rename it */
+ mdt_reint_init_ma(info, ma);
- 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);
+ mdt_fail_write(info->mti_env, info->mti_mdt->mdt_bottom,
+ OBD_FAIL_MDS_REINT_RENAME_WRITE);
- /* handle last link of tgt object */
- if (rc == 0) {
+ 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);
+ if (mnew)
+ mdt_handle_last_unlink(info, mnew, ma);
mdt_rename_counter_tally(info, info->mti_mdt, req,
- msrcdir, mtgtdir);
- }
+ msrcdir, mtgtdir);
+ }
- EXIT;
-out_unlock_new:
- if (mnew)
- mdt_object_unlock_put(info, mnew, lh_newp, rc);
+ EXIT;
+ if (mnew != NULL)
+ mdt_object_unlock(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:
+ 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(info, mtgtdir, lh_tgtdirp, rc);
+ mdt_object_unlock(info, msrcdir, lh_srcdirp, rc);
+out_put_tgtdir:
+ mdt_object_put(info->mti_env, mtgtdir);
+out_put_srcdir:
+ mdt_object_put(info->mti_env, msrcdir);
+ return rc;
+}
+
+static int mdt_reint_rename_or_migrate(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lhc, bool rename)
+{
+ 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, LATF_SKIP);
+
+ if (!fid_is_md_operative(rr->rr_fid1) ||
+ !fid_is_md_operative(rr->rr_fid2))
+ RETURN(-EPERM);
+
+ /* Note: do not enqueue rename lock for replay request, because
+ * if other MDT holds rename lock, but being blocked to wait for
+ * this MDT to finish its recovery, and the failover MDT can not
+ * get rename lock, which will cause deadlock. */
+ if (!req_is_replay(req)) {
+ rc = mdt_rename_lock(info, &rename_lh);
+ if (rc != 0) {
+ CERROR("%s: can't lock FS for rename: rc = %d\n",
+ mdt_obd_name(info->mti_mdt), rc);
+ RETURN(rc);
+ }
+ }
+
+ if (rename)
+ rc = mdt_reint_rename_internal(info, lhc);
+ else
+ rc = mdt_reint_migrate_internal(info, lhc);
+
if (lustre_handle_is_used(&rename_lh))
mdt_rename_unlock(&rename_lh);
- return rc;
+
+ RETURN(rc);
}
-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_RMENTRY] = mdt_reint_unlink
+static int mdt_reint_rename(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lhc)
+{
+ return mdt_reint_rename_or_migrate(info, lhc, true);
+}
+
+static int mdt_reint_migrate(struct mdt_thread_info *info,
+ struct mdt_lock_handle *lhc)
+{
+ return mdt_reint_rename_or_migrate(info, lhc, false);
+}
+
+struct mdt_reinter {
+ int (*mr_handler)(struct mdt_thread_info *, struct mdt_lock_handle *);
+ enum lprocfs_extra_opc mr_extra_opc;
+};
+
+static const struct mdt_reinter mdt_reinters[] = {
+ [REINT_SETATTR] = {
+ .mr_handler = &mdt_reint_setattr,
+ .mr_extra_opc = MDS_REINT_SETATTR,
+ },
+ [REINT_CREATE] = {
+ .mr_handler = &mdt_reint_create,
+ .mr_extra_opc = MDS_REINT_CREATE,
+ },
+ [REINT_LINK] = {
+ .mr_handler = &mdt_reint_link,
+ .mr_extra_opc = MDS_REINT_LINK,
+ },
+ [REINT_UNLINK] = {
+ .mr_handler = &mdt_reint_unlink,
+ .mr_extra_opc = MDS_REINT_UNLINK,
+ },
+ [REINT_RENAME] = {
+ .mr_handler = &mdt_reint_rename,
+ .mr_extra_opc = MDS_REINT_RENAME,
+ },
+ [REINT_OPEN] = {
+ .mr_handler = &mdt_reint_open,
+ .mr_extra_opc = MDS_REINT_OPEN,
+ },
+ [REINT_SETXATTR] = {
+ .mr_handler = &mdt_reint_setxattr,
+ .mr_extra_opc = MDS_REINT_SETXATTR,
+ },
+ [REINT_RMENTRY] = {
+ .mr_handler = &mdt_reint_unlink,
+ .mr_extra_opc = MDS_REINT_UNLINK,
+ },
+ [REINT_MIGRATE] = {
+ .mr_handler = &mdt_reint_migrate,
+ .mr_extra_opc = MDS_REINT_RENAME,
+ },
};
int mdt_reint_rec(struct mdt_thread_info *info,
- struct mdt_lock_handle *lhc)
+ struct mdt_lock_handle *lhc)
{
- int rc;
- ENTRY;
+ const struct mdt_reinter *mr;
+ int rc;
+ ENTRY;
- rc = reinters[info->mti_rr.rr_opcode](info, lhc);
+ if (!(info->mti_rr.rr_opcode < ARRAY_SIZE(mdt_reinters)))
+ RETURN(-EPROTO);
- RETURN(rc);
+ mr = &mdt_reinters[info->mti_rr.rr_opcode];
+ if (mr->mr_handler == NULL)
+ RETURN(-EPROTO);
+
+ rc = (*mr->mr_handler)(info, lhc);
+
+ lprocfs_counter_incr(ptlrpc_req2svc(mdt_info_req(info))->srv_stats,
+ PTLRPC_LAST_CNTR + mr->mr_extra_opc);
+
+ RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff