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libceph: add lingering request and watch/notify event framework

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Lingering requests are requests that are sent to the OSD normally but
tracked also after we get a successful request.  This keeps the OSD
connection open and resends the original request if the object moves to
another OSD.  The OSD can then send notification messages back to us
if another client initiates a notify.

This framework will be used by RBD so that the client gets notification
when a snapshot is created by another node or tool.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Yehuda Sadeh 2011-03-21 15:07:16 -07:00 • committed by Sage Weil
parent 55b00bae11
commit a40c4f10e3
3 changed files with 426 additions and 12 deletions
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net/ceph/ceph_common.c
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@ -62,6 +62,7 @@ const char *ceph_msg_type_name(int type)
case CEPH_MSG_OSD_MAP: return "osd_map";
case CEPH_MSG_OSD_OP: return "osd_op";
case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
default: return "unknown";
}
}