From: Philipp Reisner Date: Wed, 13 Oct 2010 13:32:44 +0000 (+0200) Subject: drbd: Do not log an ASSERT for P_OV_REQUEST packets while C_CONNECTED X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b18b37befb37810ce50e1a9b0a6206dfe363d827;p=openwrt%2Fstaging%2Fblogic.git drbd: Do not log an ASSERT for P_OV_REQUEST packets while C_CONNECTED This might happen if on the VERIFY_S node the disk gets dropped. Although this is an cluster wide state transition, the VERIFY_T node, updates it connection state first. Then the ack packet for the cluster wide state transition travels back, and the VERIFY_S node stops to produce the P_OV_REQUEST packets. There is absolutely nothing wrong with that. Further, do not log "Can not satisfy peer's..." on the VERIFY_S node in this case, but pretend that they had equal checksum. [Bugz 327] Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 71775a9de21d..4dc6a8870526 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -2079,7 +2079,7 @@ static int receive_DataRequest(struct drbd_conf *mdev, enum drbd_packets cmd, un const sector_t capacity = drbd_get_capacity(mdev->this_bdev); struct drbd_epoch_entry *e; struct digest_info *di = NULL; - int size; + int size, verb; unsigned int fault_type; struct p_block_req *p = &mdev->data.rbuf.block_req; @@ -2098,11 +2098,29 @@ static int receive_DataRequest(struct drbd_conf *mdev, enum drbd_packets cmd, un } if (!get_ldev_if_state(mdev, D_UP_TO_DATE)) { - if (__ratelimit(&drbd_ratelimit_state)) + verb = 1; + switch (cmd) { + case P_DATA_REQUEST: + drbd_send_ack_rp(mdev, P_NEG_DREPLY, p); + break; + case P_RS_DATA_REQUEST: + case P_CSUM_RS_REQUEST: + case P_OV_REQUEST: + drbd_send_ack_rp(mdev, P_NEG_RS_DREPLY , p); + break; + case P_OV_REPLY: + verb = 0; + dec_rs_pending(mdev); + drbd_send_ack_ex(mdev, P_OV_RESULT, sector, size, ID_IN_SYNC); + break; + default: + dev_err(DEV, "unexpected command (%s) in receive_DataRequest\n", + cmdname(cmd)); + } + if (verb && __ratelimit(&drbd_ratelimit_state)) dev_err(DEV, "Can not satisfy peer's read request, " "no local data.\n"); - drbd_send_ack_rp(mdev, cmd == P_DATA_REQUEST ? P_NEG_DREPLY : - P_NEG_RS_DREPLY , p); + /* drain possibly payload */ return drbd_drain_block(mdev, digest_size); } @@ -2157,10 +2175,6 @@ static int receive_DataRequest(struct drbd_conf *mdev, enum drbd_packets cmd, un break; case P_OV_REQUEST: - if (mdev->state.conn >= C_CONNECTED && - mdev->state.conn != C_VERIFY_T) - dev_warn(DEV, "ASSERT FAILED: got P_OV_REQUEST while being %s\n", - drbd_conn_str(mdev->state.conn)); if (mdev->ov_start_sector == ~(sector_t)0 && mdev->agreed_pro_version >= 90) { mdev->ov_start_sector = sector;