diff options
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 22 | ||||
| -rw-r--r-- | include/linux/drbd.h | 1 |
2 files changed, 19 insertions, 4 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 74c27f1507f..133a6724657 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -1722,10 +1722,24 @@ _check_net_options(struct drbd_tconn *tconn, struct net_conf *old_conf, struct n struct drbd_conf *mdev; int i; - if (old_conf && tconn->agreed_pro_version < 100 && - tconn->cstate == C_WF_REPORT_PARAMS && - new_conf->wire_protocol != old_conf->wire_protocol) - return ERR_NEED_APV_100; + if (old_conf && tconn->cstate == C_WF_REPORT_PARAMS && tconn->agreed_pro_version < 100) { + if (new_conf->wire_protocol != old_conf->wire_protocol) + return ERR_NEED_APV_100; + + if (new_conf->two_primaries != old_conf->two_primaries) + return ERR_NEED_APV_100; + + if (!new_conf->integrity_alg != !old_conf->integrity_alg) + return ERR_NEED_APV_100; + + if (strcmp(new_conf->integrity_alg, old_conf->integrity_alg)) + return ERR_NEED_APV_100; + } + + if (!new_conf->two_primaries && + conn_highest_role(tconn) == R_PRIMARY && + conn_highest_peer(tconn) == R_PRIMARY) + return ERR_NEED_ALLOW_TWO_PRI; if (new_conf->two_primaries && (new_conf->wire_protocol != DRBD_PROT_C)) diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 05063e6db81..679e8112322 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -161,6 +161,7 @@ enum drbd_ret_code { ERR_MINOR_EXISTS = 161, ERR_INVALID_REQUEST = 162, ERR_NEED_APV_100 = 163, + ERR_NEED_ALLOW_TWO_PRI = 164, /* insert new ones above this line */ AFTER_LAST_ERR_CODE |