int
slc_fcmh_ctor(struct fidc_membh *f, __unusedx int flags)
{
struct fcmh_cli_info *fci;
struct sl_resource *res;
struct sl_site *s;
sl_siteid_t siteid;
int i;
fci = fcmh_get_pri(f);
slc_fcmh_refresh_age(f);
INIT_PSC_LISTENTRY(&fci->fci_lentry);
siteid = FID_GET_SITEID(fcmh_2_fid(f));
psc_assert(f->fcmh_flags & FCMH_INITING);
if (fcmh_2_fid(f) != SLFID_ROOT &&
siteid != msl_rmc_resm->resm_siteid) {
s = libsl_siteid2site(siteid);
if (s == NULL) {
psclog_errorx("fid "SLPRI_FID" has "
"invalid site ID %d",
fcmh_2_fid(f), siteid);
return (ESTALE);
}
SITE_FOREACH_RES(s, res, i)
if (res->res_type == SLREST_MDS) {
fci->fci_resm = psc_dynarray_getpos(
&res->res_members, 0);
return (0);
}
psclog_errorx("fid "SLPRI_FID" has invalid site ID %d",
fcmh_2_fid(f), siteid);
return (ESTALE);
}
/*
* Handle a NAMESPACE_UPDATE request from another MDS.
*/
int
slm_rmm_handle_namespace_update(struct pscrpc_request *rq)
{
struct srt_update_entry *entryp;
struct srm_update_req *mq;
struct srm_update_rep *mp;
struct sl_mds_peerinfo *p;
struct sl_resource *res;
struct sl_site *site;
struct iovec iov;
int i, len, count;
SL_RSX_ALLOCREP(rq, mq, mp);
count = mq->count;
if (count <= 0 || mq->size > LNET_MTU) {
mp->rc = -EINVAL;
return (mp->rc);
}
iov.iov_len = mq->size;
iov.iov_base = PSCALLOC(mq->size);
mp->rc = slrpc_bulkserver(rq, BULK_GET_SINK, SRMM_BULK_PORTAL,
&iov, 1);
if (mp->rc)
goto out;
/* Search for the peer information by the given site ID. */
site = libsl_siteid2site(mq->siteid);
p = NULL;
if (site)
SITE_FOREACH_RES(site, res, i)
if (res->res_type == SLREST_MDS) {
p = res2rpmi(res)->rpmi_info;
break;
}
if (p == NULL) {
psclog_info("fail to find site ID %d", mq->siteid);
PFL_GOTOERR(out, mp->rc = -EINVAL);
}
/*
* Iterate through the namespace update buffer and apply updates.
* If we fail to apply an update, we still report success to our
* peer because reporting an error does not help our cause.
*/
entryp = iov.iov_base;
for (i = 0; i < count; i++) {
slm_rmm_apply_update(entryp);
len = UPDATE_ENTRY_LEN(entryp);
entryp = PSC_AGP(entryp, len);
}
zfsslash2_wait_synced(0);
out:
PSCFREE(iov.iov_base);
return (mp->rc);
}
/*
* Forward a name space operation to a remote MDS first before
* replicating the operation locally by our callers.
*/
int
slm_rmm_forward_namespace(int op, struct sl_fidgen *fg,
struct sl_fidgen *nfg, char *name, char *newname, uint32_t mode,
const struct slash_creds *crp, struct srt_stat *sstb,
int32_t to_set)
{
struct slashrpc_cservice *csvc = NULL;
struct pscrpc_request *rq = NULL;
struct sl_resm *resm = NULL;
struct srm_forward_req *mq;
struct srm_forward_rep *mp;
struct sl_resource *res;
struct sl_site *site;
int rc, len, i, vfsid;
sl_siteid_t siteid;
if (op != SLM_FORWARD_MKDIR && op != SLM_FORWARD_RMDIR &&
op != SLM_FORWARD_CREATE && op != SLM_FORWARD_UNLINK &&
op != SLM_FORWARD_RENAME && op != SLM_FORWARD_SETATTR &&
op != SLM_FORWARD_SYMLINK)
return (-PFLERR_NOSYS);
rc = slfid_to_vfsid(fg->fg_fid, &vfsid);
if (rc)
return (rc);
siteid = FID_GET_SITEID(fg->fg_fid);
site = libsl_siteid2site(siteid);
if (site == NULL)
return (-EBADF);
SITE_FOREACH_RES(site, res, i) {
if (res->res_type != SLREST_MDS)
continue;
resm = psc_dynarray_getpos(&res->res_members, 0);
break;
}
csvc = slm_getmcsvc_wait(resm);
if (csvc == NULL) {
psclog_info("unable to connect to site %d", siteid);
return (-EIO);
}
rc = SL_RSX_NEWREQ(csvc, SRMT_NAMESPACE_FORWARD, rq, mq, mp);
if (rc)
goto out;
mq->op = op;
mq->fg = *fg;
if (op == SLM_FORWARD_SETATTR) {
mq->to_set = to_set;
mq->req.sstb = *sstb;
} else
strlcpy(mq->req.name, name, sizeof(mq->req.name));
if (op == SLM_FORWARD_RENAME || op == SLM_FORWARD_SYMLINK) {
if (op == SLM_FORWARD_RENAME)
mq->nfg = *nfg;
len = strlen(name) + 1;
strlcpy(mq->req.name + len, newname,
sizeof(mq->req.name) - len);
}
if (op == SLM_FORWARD_MKDIR ||
op == SLM_FORWARD_CREATE ||
op == SLM_FORWARD_SYMLINK) {
mq->mode = mode;
mq->creds.scr_uid = crp->scr_uid;
mq->creds.scr_gid = crp->scr_gid;
}
rc = SL_RSX_WAITREP(csvc, rq, mp);
if (!rc)
rc = mp->rc;
if (!rc && sstb)
*sstb = mp->attr;
out:
if (rq)
pscrpc_req_finished(rq);
if (csvc)
sl_csvc_decref(csvc);
return (rc);
}
