/* Initialize the default and maximum LOV EA and cookie sizes. This allows
* us to make MDS RPCs with large enough reply buffers to hold the
* maximum-sized (= maximum striped) EA and cookie without having to
* calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
{
struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC_V3 };
__u32 valsize = sizeof(struct lov_desc);
int rc, easize, def_easize, cookiesize;
struct lov_desc desc;
__u16 stripes;
ENTRY;
rc = obd_get_info(NULL, dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
&valsize, &desc, NULL);
if (rc)
RETURN(rc);
stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
lsm.lsm_stripe_count = stripes;
easize = obd_size_diskmd(dt_exp, &lsm);
lsm.lsm_stripe_count = desc.ld_default_stripe_count;
def_easize = obd_size_diskmd(dt_exp, &lsm);
cookiesize = stripes * sizeof(struct llog_cookie);
CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
easize, cookiesize);
rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
RETURN(rc);
}
/* Initialize the default and maximum LOV EA and cookie sizes. This allows
* us to make MDS RPCs with large enough reply buffers to hold the
* maximum-sized (= maximum striped) EA and cookie without having to
* calculate this (via a call into the LOV + OSCs) each time we make an RPC.
*/
int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
{
struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC_V3 };
__u32 valsize = sizeof(struct lov_desc);
int rc, easize, def_easize, cookiesize;
struct lov_desc desc;
__u16 stripes, def_stripes;
rc = obd_get_info(NULL, dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
&valsize, &desc, NULL);
if (rc)
return rc;
stripes = min_t(__u32, desc.ld_tgt_count, LOV_MAX_STRIPE_COUNT);
lsm.lsm_stripe_count = stripes;
easize = obd_size_diskmd(dt_exp, &lsm);
def_stripes = min_t(__u32, desc.ld_default_stripe_count,
LOV_MAX_STRIPE_COUNT);
lsm.lsm_stripe_count = def_stripes;
def_easize = obd_size_diskmd(dt_exp, &lsm);
cookiesize = stripes * sizeof(struct llog_cookie);
/* default cookiesize is 0 because from 2.4 server doesn't send
* llog cookies to client.
*/
CDEBUG(D_HA,
"updating def/max_easize: %d/%d def/max_cookiesize: 0/%d\n",
def_easize, easize, cookiesize);
rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize, 0);
return rc;
}
