diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2011-04-13 18:16:10 -0700 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 16:45:18 +0100 |
| commit | b032b6fa3528d6eed972db32257cb316a66e0dac (patch) | |
| tree | c5152232ea0074339e69e5b2fef9fa9bfd7229e6 | |
| parent | cd64397c0b7be5050c4127aba242c5d0ae6acaed (diff) | |
drbd: Allow online change of replication protocol only with agreed_pv >= 100
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 5 | ||||
| -rw-r--r-- | include/linux/drbd.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 40de384aade6..d4b29fd603f4 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -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; diff --git a/include/linux/drbd.h b/include/linux/drbd.h index fe8d6ba31bcb..6c7c85d8fc41 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -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 |