/*
* Handler for: getattr, lookup and revalidate cases.
*/
int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt = NULL;
struct mdt_body *body;
int rc = 0;
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
return PTR_ERR(tgt);
if (!fid_is_sane(&op_data->op_fid2))
fid_zero(&op_data->op_fid2);
CDEBUG(D_INODE, "LOOKUP_INTENT with fid1="DFID", fid2="DFID
", name='%s' -> mds #%d\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2),
op_data->op_name ? op_data->op_name : "<NULL>",
tgt->ltd_idx);
op_data->op_bias &= ~MDS_CROSS_REF;
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it,
flags, reqp, cb_blocking, extra_lock_flags);
if (rc < 0 || *reqp == NULL)
return rc;
/*
* MDS has returned success. Probably name has been resolved in
* remote inode. Let's check this.
*/
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
return -EPROTO;
/* Not cross-ref case, just get out of here. */
if (likely(!(body->valid & OBD_MD_MDS)))
return 0;
rc = lmv_intent_remote(exp, lmm, lmmsize, it, NULL, flags, reqp,
cb_blocking, extra_lock_flags);
return rc;
}
/*
* Handler for: getattr, lookup and revalidate cases.
*/
static int
lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
struct lookup_intent *it, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt = NULL;
struct mdt_body *body;
struct lmv_stripe_md *lsm = op_data->op_mea1;
int rc = 0;
ENTRY;
/* If it returns ERR_PTR(-EBADFD) then it is an unknown hash type
* it will try all stripes to locate the object */
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt) && (PTR_ERR(tgt) != -EBADFD))
RETURN(PTR_ERR(tgt));
/* Both migrating dir and unknown hash dir need to try
* all of sub-stripes */
if (lsm != NULL && !lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
struct lmv_oinfo *oinfo;
oinfo = &lsm->lsm_md_oinfo[0];
op_data->op_fid1 = oinfo->lmo_fid;
op_data->op_mds = oinfo->lmo_mds;
tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
}
if (!fid_is_sane(&op_data->op_fid2))
fid_zero(&op_data->op_fid2);
CDEBUG(D_INODE, "LOOKUP_INTENT with fid1="DFID", fid2="DFID
", name='%s' -> mds #%u lsm=%p lsm_magic=%x\n",
PFID(&op_data->op_fid1), PFID(&op_data->op_fid2),
op_data->op_name ? op_data->op_name : "<NULL>",
tgt->ltd_idx, lsm, lsm == NULL ? -1 : lsm->lsm_md_magic);
op_data->op_bias &= ~MDS_CROSS_REF;
rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp, cb_blocking,
extra_lock_flags);
if (rc < 0)
RETURN(rc);
if (*reqp == NULL) {
/* If RPC happens, lsm information will be revalidated
* during update_inode process (see ll_update_lsm_md) */
if (op_data->op_mea2 != NULL) {
rc = lmv_revalidate_slaves(exp, op_data->op_mea2,
cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
}
RETURN(rc);
} else if (it_disposition(it, DISP_LOOKUP_NEG) && lsm != NULL &&
lmv_need_try_all_stripes(lsm)) {
/* For migrating and unknown hash type directory, it will
* try to target the entry on other stripes */
int stripe_index;
for (stripe_index = 1;
stripe_index < lsm->lsm_md_stripe_count &&
it_disposition(it, DISP_LOOKUP_NEG); stripe_index++) {
struct lmv_oinfo *oinfo;
/* release the previous request */
ptlrpc_req_finished(*reqp);
it->d.lustre.it_data = NULL;
*reqp = NULL;
oinfo = &lsm->lsm_md_oinfo[stripe_index];
tgt = lmv_find_target(lmv, &oinfo->lmo_fid);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
CDEBUG(D_INODE, "Try other stripes " DFID"\n",
PFID(&oinfo->lmo_fid));
op_data->op_fid1 = oinfo->lmo_fid;
it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE;
rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp,
cb_blocking, extra_lock_flags);
if (rc != 0)
RETURN(rc);
}
}
/*
* MDS has returned success. Probably name has been resolved in
* remote inode. Let's check this.
*/
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
/* Not cross-ref case, just get out of here. */
if (unlikely((body->mbo_valid & OBD_MD_MDS))) {
rc = lmv_intent_remote(exp, it, NULL, reqp, cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
}
RETURN(rc);
}
/*
* IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
* may be split dir.
*/
static int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
struct lookup_intent *it,
struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct mdt_body *body;
int rc;
ENTRY;
if (it->it_flags & MDS_OPEN_BY_FID) {
LASSERT(fid_is_sane(&op_data->op_fid2));
/* for striped directory, we can't know parent stripe fid
* without name, but we can set it to child fid, and MDT
* will obtain it from linkea in open in such case. */
if (op_data->op_mea1 != NULL)
op_data->op_fid1 = op_data->op_fid2;
tgt = lmv_find_target(lmv, &op_data->op_fid2);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
op_data->op_mds = tgt->ltd_idx;
} else {
LASSERT(fid_is_sane(&op_data->op_fid1));
LASSERT(fid_is_zero(&op_data->op_fid2));
LASSERT(op_data->op_name != NULL);
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
}
/* If it is ready to open the file by FID, do not need
* allocate FID at all, otherwise it will confuse MDT */
if ((it->it_op & IT_CREAT) && !(it->it_flags & MDS_OPEN_BY_FID)) {
/*
* For lookup(IT_CREATE) cases allocate new fid and setup FLD
* for it.
*/
rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
if (rc != 0)
RETURN(rc);
}
CDEBUG(D_INODE, "OPEN_INTENT with fid1="DFID", fid2="DFID","
" name='%s' -> mds #%u\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, it, reqp, cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
/*
* Nothing is found, do not access body->fid1 as it is zero and thus
* pointless.
*/
if ((it->d.lustre.it_disposition & DISP_LOOKUP_NEG) &&
!(it->d.lustre.it_disposition & DISP_OPEN_CREATE) &&
!(it->d.lustre.it_disposition & DISP_OPEN_OPEN))
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
/* Not cross-ref case, just get out of here. */
if (unlikely((body->mbo_valid & OBD_MD_MDS))) {
rc = lmv_intent_remote(exp, it, &op_data->op_fid1, reqp,
cb_blocking, extra_lock_flags);
if (rc != 0)
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
}
RETURN(rc);
}
int lmv_revalidate_slaves(struct obd_export *exp,
const struct lmv_stripe_md *lsm,
ldlm_blocking_callback cb_blocking,
int extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct ptlrpc_request *req = NULL;
struct mdt_body *body;
struct md_op_data *op_data;
int i;
int rc = 0;
ENTRY;
/**
* revalidate slaves has some problems, temporarily return,
* we may not need that
*/
OBD_ALLOC_PTR(op_data);
if (op_data == NULL)
RETURN(-ENOMEM);
/**
* Loop over the stripe information, check validity and update them
* from MDS if needed.
*/
for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
struct lu_fid fid;
struct lookup_intent it = { .it_op = IT_GETATTR };
struct lustre_handle *lockh = NULL;
struct lmv_tgt_desc *tgt = NULL;
struct inode *inode;
fid = lsm->lsm_md_oinfo[i].lmo_fid;
inode = lsm->lsm_md_oinfo[i].lmo_root;
/*
* Prepare op_data for revalidating. Note that @fid2 shluld be
* defined otherwise it will go to server and take new lock
* which is not needed here.
*/
memset(op_data, 0, sizeof(*op_data));
op_data->op_fid1 = fid;
op_data->op_fid2 = fid;
tgt = lmv_locate_mds(lmv, op_data, &fid);
if (IS_ERR(tgt))
GOTO(cleanup, rc = PTR_ERR(tgt));
CDEBUG(D_INODE, "Revalidate slave "DFID" -> mds #%u\n",
PFID(&fid), tgt->ltd_idx);
if (req != NULL) {
ptlrpc_req_finished(req);
req = NULL;
}
rc = md_intent_lock(tgt->ltd_exp, op_data, &it, &req,
cb_blocking, extra_lock_flags);
if (rc < 0)
GOTO(cleanup, rc);
lockh = (struct lustre_handle *)&it.d.lustre.it_lock_handle;
if (rc > 0 && req == NULL) {
/* slave inode is still valid */
CDEBUG(D_INODE, "slave "DFID" is still valid.\n",
PFID(&fid));
rc = 0;
} else {
/* refresh slave from server */
body = req_capsule_server_get(&req->rq_pill,
&RMF_MDT_BODY);
if (body == NULL) {
if (it.d.lustre.it_lock_mode && lockh) {
ldlm_lock_decref(lockh,
it.d.lustre.it_lock_mode);
it.d.lustre.it_lock_mode = 0;
}
GOTO(cleanup, rc = -ENOENT);
}
i_size_write(inode, body->mbo_size);
inode->i_blocks = body->mbo_blocks;
set_nlink(inode, body->mbo_nlink);
LTIME_S(inode->i_atime) = body->mbo_atime;
LTIME_S(inode->i_ctime) = body->mbo_ctime;
LTIME_S(inode->i_mtime) = body->mbo_mtime;
}
md_set_lock_data(tgt->ltd_exp, &lockh->cookie, inode, NULL);
if (it.d.lustre.it_lock_mode != 0 && lockh != NULL) {
ldlm_lock_decref(lockh, it.d.lustre.it_lock_mode);
it.d.lustre.it_lock_mode = 0;
}
}
cleanup:
if (req != NULL)
ptlrpc_req_finished(req);
OBD_FREE_PTR(op_data);
RETURN(rc);
}
/*
* IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
* may be split dir.
*/
int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct mdt_body *body;
int rc;
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
return PTR_ERR(tgt);
/* If it is ready to open the file by FID, do not need
* allocate FID at all, otherwise it will confuse MDT */
if ((it->it_op & IT_CREAT) &&
!(it->it_flags & MDS_OPEN_BY_FID)) {
/*
* For open with IT_CREATE and for IT_CREATE cases allocate new
* fid and setup FLD for it.
*/
op_data->op_fid3 = op_data->op_fid2;
rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
if (rc != 0)
return rc;
}
CDEBUG(D_INODE, "OPEN_INTENT with fid1="DFID", fid2="DFID","
" name='%s' -> mds #%d\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0)
return rc;
/*
* Nothing is found, do not access body->fid1 as it is zero and thus
* pointless.
*/
if ((it->d.lustre.it_disposition & DISP_LOOKUP_NEG) &&
!(it->d.lustre.it_disposition & DISP_OPEN_CREATE) &&
!(it->d.lustre.it_disposition & DISP_OPEN_OPEN))
return rc;
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
return -EPROTO;
/*
* Not cross-ref case, just get out of here.
*/
if (likely(!(body->valid & OBD_MD_MDS)))
return 0;
/*
* Okay, MDS has returned success. Probably name has been resolved in
* remote inode.
*/
rc = lmv_intent_remote(exp, lmm, lmmsize, it, &op_data->op_fid1, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0) {
LASSERT(rc < 0);
/*
* This is possible, that some userspace application will try to
* open file as directory and we will have -ENOTDIR here. As
* this is normal situation, we should not print error here,
* only debug info.
*/
CDEBUG(D_INODE, "Can't handle remote %s: dir "DFID"("DFID"):"
"%*s: %d\n", LL_IT2STR(it), PFID(&op_data->op_fid2),
PFID(&op_data->op_fid1), op_data->op_namelen,
op_data->op_name, rc);
return rc;
}
return rc;
}
/*
* Handler for: getattr, lookup and revalidate cases.
*/
int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt = NULL;
struct mdt_body *body;
struct lmv_stripe_md *lsm = op_data->op_mea1;
int rc = 0;
ENTRY;
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
if (!fid_is_sane(&op_data->op_fid2))
fid_zero(&op_data->op_fid2);
CDEBUG(D_INODE, "LOOKUP_INTENT with fid1="DFID", fid2="DFID
", name='%s' -> mds #%d lsm=%p lsm_magic=%x\n",
PFID(&op_data->op_fid1), PFID(&op_data->op_fid2),
op_data->op_name ? op_data->op_name : "<NULL>",
tgt->ltd_idx, lsm, lsm == NULL ? -1 : lsm->lsm_md_magic);
op_data->op_bias &= ~MDS_CROSS_REF;
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it,
flags, reqp, cb_blocking, extra_lock_flags);
if (rc < 0)
RETURN(rc);
if (*reqp == NULL) {
/* If RPC happens, lsm information will be revalidated
* during update_inode process (see ll_update_lsm_md) */
if (op_data->op_mea2 != NULL) {
rc = lmv_revalidate_slaves(exp, NULL, op_data->op_mea2,
cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
}
RETURN(rc);
} else if (it_disposition(it, DISP_LOOKUP_NEG) &&
lsm != NULL && lsm->lsm_md_magic == LMV_MAGIC_MIGRATE) {
/* For migrating directory, if it can not find the child in
* the source directory(master stripe), try the targeting
* directory(stripe 1) */
tgt = lmv_find_target(lmv, &lsm->lsm_md_oinfo[1].lmo_fid);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
ptlrpc_req_finished(*reqp);
it->d.lustre.it_data = NULL;
*reqp = NULL;
CDEBUG(D_INODE, "For migrating dir, try target dir "DFID"\n",
PFID(&lsm->lsm_md_oinfo[1].lmo_fid));
op_data->op_fid1 = lsm->lsm_md_oinfo[1].lmo_fid;
it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE;
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it,
flags, reqp, cb_blocking, extra_lock_flags);
}
/*
* MDS has returned success. Probably name has been resolved in
* remote inode. Let's check this.
*/
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
/* Not cross-ref case, just get out of here. */
if (unlikely((body->valid & OBD_MD_MDS))) {
rc = lmv_intent_remote(exp, lmm, lmmsize, it, NULL, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0)
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
}
RETURN(rc);
}
/*
* IT_OPEN is intended to open (and create, possible) an object. Parent (pid)
* may be split dir.
*/
int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
void *lmm, int lmmsize, struct lookup_intent *it,
int flags, struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking,
__u64 extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct lmv_tgt_desc *tgt;
struct mdt_body *body;
int rc;
ENTRY;
/* Note: client might open with some random flags(sanity 33b), so we can
* not make sure op_fid2 is being initialized with BY_FID flag */
if (it->it_flags & MDS_OPEN_BY_FID && fid_is_sane(&op_data->op_fid2)) {
if (op_data->op_mea1 != NULL) {
struct lmv_stripe_md *lsm = op_data->op_mea1;
const struct lmv_oinfo *oinfo;
oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
op_data->op_namelen);
if (IS_ERR(oinfo))
RETURN(PTR_ERR(oinfo));
op_data->op_fid1 = oinfo->lmo_fid;
}
tgt = lmv_find_target(lmv, &op_data->op_fid2);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
op_data->op_mds = tgt->ltd_idx;
} else {
tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
if (IS_ERR(tgt))
RETURN(PTR_ERR(tgt));
}
/* If it is ready to open the file by FID, do not need
* allocate FID at all, otherwise it will confuse MDT */
if ((it->it_op & IT_CREAT) &&
!(it->it_flags & MDS_OPEN_BY_FID)) {
/*
* For open with IT_CREATE and for IT_CREATE cases allocate new
* fid and setup FLD for it.
*/
op_data->op_fid3 = op_data->op_fid2;
rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
if (rc != 0)
RETURN(rc);
}
CDEBUG(D_INODE, "OPEN_INTENT with fid1="DFID", fid2="DFID","
" name='%s' -> mds #%d\n", PFID(&op_data->op_fid1),
PFID(&op_data->op_fid2), op_data->op_name, tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, lmm, lmmsize, it, flags,
reqp, cb_blocking, extra_lock_flags);
if (rc != 0)
RETURN(rc);
/*
* Nothing is found, do not access body->fid1 as it is zero and thus
* pointless.
*/
if ((it->d.lustre.it_disposition & DISP_LOOKUP_NEG) &&
!(it->d.lustre.it_disposition & DISP_OPEN_CREATE) &&
!(it->d.lustre.it_disposition & DISP_OPEN_OPEN))
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
/* Not cross-ref case, just get out of here. */
if (unlikely((body->valid & OBD_MD_MDS))) {
rc = lmv_intent_remote(exp, lmm, lmmsize, it, &op_data->op_fid1,
flags, reqp, cb_blocking,
extra_lock_flags);
if (rc != 0)
RETURN(rc);
body = req_capsule_server_get(&(*reqp)->rq_pill, &RMF_MDT_BODY);
if (body == NULL)
RETURN(-EPROTO);
}
RETURN(rc);
}
int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody,
struct lmv_stripe_md *lsm,
ldlm_blocking_callback cb_blocking,
int extra_lock_flags)
{
struct obd_device *obd = exp->exp_obd;
struct lmv_obd *lmv = &obd->u.lmv;
struct mdt_body *body;
struct md_op_data *op_data;
unsigned long size = 0;
unsigned long nlink = 0;
obd_time atime = 0;
obd_time ctime = 0;
obd_time mtime = 0;
int i;
int rc = 0;
ENTRY;
/**
* revalidate slaves has some problems, temporarily return,
* we may not need that
*/
if (lsm->lsm_md_stripe_count <= 1)
RETURN(0);
OBD_ALLOC_PTR(op_data);
if (op_data == NULL)
RETURN(-ENOMEM);
/**
* Loop over the stripe information, check validity and update them
* from MDS if needed.
*/
for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
struct lu_fid fid;
struct lookup_intent it = { .it_op = IT_GETATTR };
struct ptlrpc_request *req = NULL;
struct lustre_handle *lockh = NULL;
struct lmv_tgt_desc *tgt = NULL;
struct inode *inode;
fid = lsm->lsm_md_oinfo[i].lmo_fid;
inode = lsm->lsm_md_oinfo[i].lmo_root;
if (i == 0) {
if (mbody != NULL) {
body = mbody;
goto update;
} else {
goto release_lock;
}
}
/*
* Prepare op_data for revalidating. Note that @fid2 shluld be
* defined otherwise it will go to server and take new lock
* which is not needed here.
*/
memset(op_data, 0, sizeof(*op_data));
op_data->op_fid1 = fid;
op_data->op_fid2 = fid;
tgt = lmv_locate_mds(lmv, op_data, &fid);
if (IS_ERR(tgt))
GOTO(cleanup, rc = PTR_ERR(tgt));
CDEBUG(D_INODE, "Revalidate slave "DFID" -> mds #%d\n",
PFID(&fid), tgt->ltd_idx);
rc = md_intent_lock(tgt->ltd_exp, op_data, NULL, 0, &it, 0,
&req, cb_blocking, extra_lock_flags);
if (rc < 0)
GOTO(cleanup, rc);
lockh = (struct lustre_handle *)&it.d.lustre.it_lock_handle;
if (rc > 0 && req == NULL) {
/* slave inode is still valid */
CDEBUG(D_INODE, "slave "DFID" is still valid.\n",
PFID(&fid));
rc = 0;
} else {
/* refresh slave from server */
body = req_capsule_server_get(&req->rq_pill,
&RMF_MDT_BODY);
LASSERT(body != NULL);
update:
if (unlikely(body->nlink < 2)) {
CERROR("%s: nlink %d < 2 corrupt stripe %d "DFID
":" DFID"\n", obd->obd_name, body->nlink,
i, PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
PFID(&lsm->lsm_md_oinfo[0].lmo_fid));
if (req != NULL)
ptlrpc_req_finished(req);
if (it.d.lustre.it_lock_mode && lockh) {
ldlm_lock_decref(lockh,
it.d.lustre.it_lock_mode);
it.d.lustre.it_lock_mode = 0;
}
GOTO(cleanup, rc = -EIO);
}
if (i != 0)
md_set_lock_data(tgt->ltd_exp, &lockh->cookie,
inode, NULL);
i_size_write(inode, body->size);
set_nlink(inode, body->nlink);
LTIME_S(inode->i_atime) = body->atime;
LTIME_S(inode->i_ctime) = body->ctime;
LTIME_S(inode->i_mtime) = body->mtime;
if (req != NULL)
ptlrpc_req_finished(req);
}
release_lock:
size += i_size_read(inode);
if (i != 0)
nlink += inode->i_nlink - 2;
else
nlink += inode->i_nlink;
atime = LTIME_S(inode->i_atime) > atime ?
LTIME_S(inode->i_atime) : atime;
ctime = LTIME_S(inode->i_ctime) > ctime ?
LTIME_S(inode->i_ctime) : ctime;
mtime = LTIME_S(inode->i_mtime) > mtime ?
LTIME_S(inode->i_mtime) : mtime;
if (it.d.lustre.it_lock_mode != 0 && lockh != NULL) {
ldlm_lock_decref(lockh, it.d.lustre.it_lock_mode);
it.d.lustre.it_lock_mode = 0;
}
CDEBUG(D_INODE, "i %d "DFID" size %llu, nlink %u, atime "
"%lu, mtime %lu, ctime %lu.\n", i, PFID(&fid),
i_size_read(inode), inode->i_nlink,
LTIME_S(inode->i_atime), LTIME_S(inode->i_mtime),
LTIME_S(inode->i_ctime));
}
/*
* update attr of master request.
*/
CDEBUG(D_INODE, "Return refreshed attrs: size = %lu nlink %lu atime "
LPU64 "ctime "LPU64" mtime "LPU64" for " DFID"\n", size, nlink,
atime, ctime, mtime, PFID(&lsm->lsm_md_oinfo[0].lmo_fid));
if (mbody != NULL) {
mbody->atime = atime;
mbody->ctime = ctime;
mbody->mtime = mtime;
}
cleanup:
OBD_FREE_PTR(op_data);
RETURN(rc);
}