diff options
| author |   Philipp Reisner <philipp.reisner@linbit.com> | 2010-10-27 12:21:30 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-03-10 11:34:46 +0100 |
| commit | 67531718d8f1259f01ab84c2aa25f7b03c7afd46 (patch) | |
| tree | 6f76323440f8ce3793b5d5f1a19808207f38db5b /drivers/block/drbd/drbd_main.c | |
| parent | drbd: New configuration parameters for dealing with network congestion (diff) | |
| download | linux-dev-67531718d8f1259f01ab84c2aa25f7b03c7afd46.tar.xz linux-dev-67531718d8f1259f01ab84c2aa25f7b03c7afd46.zip | |
drbd: Implemented two new connection states Ahead/Behind
In this connection mode, the ahead node no longer replicates
application IO. The behind's disk becomes out dated.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_main.c')
| -rw-r--r-- | drivers/block/drbd/drbd_main.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index e81d009dd061..46f27d6c0b21 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -871,16 +871,19 @@ static union drbd_state sanitize_state(struct drbd_conf *mdev, union drbd_state if (ns.conn >= C_CONNECTED && ((ns.disk == D_CONSISTENT || ns.disk == D_OUTDATED) || - (ns.disk == D_NEGOTIATING && ns.conn == C_WF_BITMAP_T))) { + (ns.disk == D_NEGOTIATING && ns.conn == C_WF_BITMAP_T) || + ns.conn >= C_AHEAD)) { switch (ns.conn) { case C_WF_BITMAP_T: case C_PAUSED_SYNC_T: + case C_BEHIND: ns.disk = D_OUTDATED; break; case C_CONNECTED: case C_WF_BITMAP_S: case C_SYNC_SOURCE: case C_PAUSED_SYNC_S: + case C_AHEAD: ns.disk = D_UP_TO_DATE; break; case C_SYNC_TARGET: @@ -893,16 +896,18 @@ static union drbd_state sanitize_state(struct drbd_conf *mdev, union drbd_state } if (ns.conn >= C_CONNECTED && - (ns.pdsk == D_CONSISTENT || ns.pdsk == D_OUTDATED)) { + (ns.pdsk == D_CONSISTENT || ns.pdsk == D_OUTDATED || ns.conn >= C_AHEAD)) { switch (ns.conn) { case C_CONNECTED: case C_WF_BITMAP_T: case C_PAUSED_SYNC_T: case C_SYNC_TARGET: + case C_BEHIND: ns.pdsk = D_UP_TO_DATE; break; case C_WF_BITMAP_S: case C_PAUSED_SYNC_S: + case C_AHEAD: /* remap any consistent state to D_OUTDATED, * but disallow "upgrade" of not even consistent states. */ @@ -1374,6 +1379,9 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os, if (os.conn == C_WF_REPORT_PARAMS && ns.conn >= C_CONNECTED) drbd_send_state(mdev); + if (os.conn != C_AHEAD && ns.conn == C_AHEAD) + drbd_send_state(mdev); + /* We are in the progress to start a full sync... */ if ((os.conn != C_STARTING_SYNC_T && ns.conn == C_STARTING_SYNC_T) || (os.conn != C_STARTING_SYNC_S && ns.conn == C_STARTING_SYNC_S)) |