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| author | Sage Weil <sage@inktank.com> | 2013-03-25 19:47:40 +0400 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-05-02 08:17:09 +0400 |
| commit | 3a23083bda56850a1dc0e1c6d270b1f5dc789f07 (patch) | |
| tree | ddd52f6a7c8da4334d68ae3e28825d89155d29a0 /include/linux/ceph/ceph_features.h | |
| parent | 022f3e2ee2354599faccf5a764a5a24a5dd194c9 (diff) | |
| download | linux-3a23083bda56850a1dc0e1c6d270b1f5dc789f07.tar.xz | |
libceph: implement RECONNECT_SEQ feature
This is an old protocol extension that allows the client and server to
avoid resending old messages after a reconnect (following a socket error).
Instead, the exchange their sequence numbers during the handshake. This
avoids sending a bunch of useless data over the socket.
It has been supported in the server code since v0.22 (Sep 2010).
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'include/linux/ceph/ceph_features.h')
| -rw-r--r-- | include/linux/ceph/ceph_features.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index 76554cecaab2..4c42080347af 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -41,6 +41,7 @@ */ #define CEPH_FEATURES_SUPPORTED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ + CEPH_FEATURE_RECONNECT_SEQ | \ CEPH_FEATURE_PGID64 | \ CEPH_FEATURE_PGPOOL3 | \ CEPH_FEATURE_OSDENC | \ @@ -51,6 +52,7 @@ #define CEPH_FEATURES_REQUIRED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ + CEPH_FEATURE_RECONNECT_SEQ | \ CEPH_FEATURE_PGID64 | \ CEPH_FEATURE_PGPOOL3 | \ CEPH_FEATURE_OSDENC) |