6f6c700675
If we send a request to osd A, and the request's pg remaps to osd B and then back to A in quick succession, we need to resend the request to A. The old code was only calling kick_requests after processing all incremental maps in a message, so it was very possible to not resend a request that needed to be resent. This would make the osd eventually time out (at least with the current default of osd timeouts enabled). The correct approach is to scan requests on every map incremental. This patch refactors the kick code in a few ways: - all requests are either on req_lru (in flight), req_unsent (ready to send), or req_notarget (currently map to no up osd) - mapping always done by map_request (previous map_osds) - if the mapping changes, we requeue. requests are resent only after all map incrementals are processed. - some osd reset code is moved out of kick_requests into a separate function - the "kick this osd" functionality is moved to kick_osd_requests, as it is unrelated to scanning for request->pg->osd mapping changes Signed-off-by: Sage Weil <sage@newdream.net> |
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| .. | ||
| auth.h | ||
| buffer.h | ||
| ceph_debug.h | ||
| ceph_frag.h | ||
| ceph_fs.h | ||
| ceph_hash.h | ||
| debugfs.h | ||
| decode.h | ||
| libceph.h | ||
| mdsmap.h | ||
| messenger.h | ||
| mon_client.h | ||
| msgpool.h | ||
| msgr.h | ||
| osd_client.h | ||
| osdmap.h | ||
| pagelist.h | ||
| rados.h | ||
| types.h | ||