user/sven/linux.git/include/linux/ceph, branch v3.0.42

ceph: use LOOKUPINO to make unconnected nfs fh more reliable

2011-05-24T18:52:05Z

If we are unable to locate an inode by ino, ask the MDS using the new LOOKUPINO command. Signed-off-by: Sage Weil

ceph: Move secret key parsing earlier.

2011-03-29T19:11:16Z

This makes the base64 logic be contained in mount option parsing, and prepares us for replacing the homebew key management with the kernel key retention service. Signed-off-by: Tommi Virtanen Signed-off-by: Sage Weil

libceph: add lingering request and watch/notify event framework

2011-03-22T18:33:55Z

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 Signed-off-by: Sage Weil

ceph: move readahead default to fs/ceph from libceph

2011-03-21T19:24:23Z

Signed-off-by: Sage Weil

ceph: update common header files

2011-03-21T19:24:21Z

This updates the common header files used by the different ceph related modules. Specifically it adds definitions required by the rbd watch/notify feature. Signed-off-by: Yehuda Sadeh

libceph: fix osd request queuing on osdmap updates

2011-03-21T19:24:19Z

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

libceph: fix msgr keepalive flag

2011-03-04T20:24:31Z

There was some broken keepalive code using a dead variable. Shift to using the proper bit flag. Signed-off-by: Sage Weil

libceph: fix msgr backoff

2011-03-04T20:24:28Z

With commit f363e45f we replaced a bunch of hacky workqueue mutual exclusion logic with the WQ_NON_REENTRANT flag. One pieces of fallout is that the exponential backoff breaks in certain cases: * con_work attempts to connect. * we get an immediate failure, and the socket state change handler queues immediate work. * con_work calls con_fault, we decide to back off, but can't queue delayed work. In this case, we add a BACKOFF bit to make con_work reschedule delayed work next time it runs (which should be immediately). Signed-off-by: Sage Weil

net/ceph: make ceph_msgr_wq non-reentrant

2011-01-12T23:15:14Z

ceph messenger code does a rather complex dancing around multithread workqueue to make sure the same work item isn't executed concurrently on different CPUs. This restriction can be provided by workqueue with WQ_NON_REENTRANT. Make ceph_msgr_wq non-reentrant workqueue with the default concurrency level and remove the QUEUED/BUSY logic. * This removes backoff handling in con_work() but it couldn't reliably block execution of con_work() to begin with - queue_con() can be called after the work started but before BUSY is set. It seems that it was an optimization for a rather cold path and can be safely removed. * The number of concurrent work items is bound by the number of connections and connetions are independent from each other. With the default concurrency level, different connections will be executed independently. Signed-off-by: Tejun Heo Cc: Sage Weil Cc: ceph-devel@vger.kernel.org Signed-off-by: Sage Weil

ceph: add dir_layout to inode

2011-01-12T23:15:12Z

Add a ceph_dir_layout to the inode, and calculate dentry hash values based on the parent directory's specified dir_hash function. This is needed because the old default Linux dcache hash function is extremely week and leads to a poor distribution of files among dir fragments. Signed-off-by: Sage Weil