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drbd: Implemented two new connection states Ahead/Behind

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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>
This commit is contained in:
Philipp Reisner
2010-10-27 12:21:30 +02:00
parent 422028b1ca
commit 67531718d8
6 changed files with 45 additions and 3 deletions
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4
drivers/block/drbd/drbd_strings.c
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@@ -48,6 +48,8 @@ static const char *drbd_conn_s_names[] = {
[C_PAUSED_SYNC_T] = "PausedSyncT",
[C_VERIFY_S] = "VerifyS",
[C_VERIFY_T] = "VerifyT",
[C_AHEAD] = "Ahead",
[C_BEHIND] = "Behind",
};
static const char *drbd_role_s_names[] = {
@@ -92,7 +94,7 @@ static const char *drbd_state_sw_errors[] = {
const char *drbd_conn_str(enum drbd_conns s)
{
/* enums are unsigned... */
return s > C_PAUSED_SYNC_T ? "TOO_LARGE" : drbd_conn_s_names[s];
return s > C_BEHIND ? "TOO_LARGE" : drbd_conn_s_names[s];
}
const char *drbd_role_str(enum drbd_role s)