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Commit b032b6fa authored by Philipp Reisner's avatar Philipp Reisner
Browse files

drbd: Allow online change of replication protocol only with agreed_pv >= 100 



Signed-off-by: default avatarPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: default avatarLars Ellenberg <lars.ellenberg@linbit.com>
parent cd64397c

drivers/block/drbd/drbd_nl.c

+5 −0
Original line number Diff line number Diff line
@@ -1671,6 +1671,11 @@ check_net_options(struct drbd_tconn *tconn, struct net_conf *new_conf) 
	struct drbd_conf *mdev;

	int i;



	if (tconn->net_conf && tconn->agreed_pro_version < 100 &&

	    tconn->cstate == C_WF_REPORT_PARAMS &&

	    new_conf->wire_protocol != tconn->net_conf->wire_protocol)

		return ERR_NEED_APV_100;



	if (new_conf->two_primaries &&

	    (new_conf->wire_protocol != DRBD_PROT_C))

		return ERR_NOT_PROTO_C;

include/linux/drbd.h

+1 −0
Original line number Diff line number Diff line
@@ -160,6 +160,7 @@ enum drbd_ret_code { 
	ERR_MINOR_CONFIGURED    = 160,

	ERR_MINOR_EXISTS	= 161,

	ERR_INVALID_REQUEST	= 162,

	ERR_NEED_APV_100	= 163,



	/* insert new ones above this line */

	AFTER_LAST_ERR_CODE