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* update network codemigrate_3.2Wolfgang Wiedmeyer2015-10-241-29/+64
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* libceph: fix page calculation for non-page-aligned ioSage Weil2011-06-131-4/+6
| | | | | | | | Set the page count correctly for non-page-aligned IO. We were already doing this correctly for alignment, but not the page count. Fixes DIRECT_IO writes from unaligned pages. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: fix sync vs canceled writeSage Weil2011-06-071-5/+10
| | | | | | | If we cancel a write, trigger the safe completions to prevent a sync from blocking indefinitely in ceph_osdc_sync(). Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: subscribe to osdmap when cluster is fullSage Weil2011-05-241-0/+9
| | | | | | | | When the cluster is marked full, subscribe to subsequent map updates to ensure we find out promptly when it is no longer full. This will prevent us from spewing ENOSPC for (much) longer than necessary. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: check return value for start_request in writepagesSage Weil2011-05-191-1/+7
| | | | | | | Since we pass the nofail arg, we should never get an error; BUG if we do. (And fix the function to not return an error if __map_request fails.) Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: use snprintf for formatting object nameSage Weil2011-05-191-1/+1
| | | | Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: fix ceph_osdc_alloc_request error checksSage Weil2011-05-031-2/+2
| | | | | | ceph_osdc_alloc_request returns NULL on failure. Signed-off-by: Sage Weil <sage@newdream.net>
* Merge branch 'for-linus' of ↵Linus Torvalds2011-04-141-3/+9
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: fix linger request requeueing
| * libceph: fix linger request requeueingSage Weil2011-04-061-3/+9
| | | | | | | | | | | | | | | | | | | | | | Fix the request transition from linger -> normal request. The key is to preserve r_osd and requeue on the same OSD. Reregister as a normal request, add the request to the proper queues, then unregister the linger. Fix the unregister helper to avoid clearing r_osd (and also simplify the parallel check in __unregister_request()). Reported-by: Henry Chang <henry.cy.chang@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
* | Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6Linus Torvalds2011-04-071-1/+1
|\ \ | |/ |/| | | | | * 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6: Fix common misspellings
| * Fix common misspellingsLucas De Marchi2011-03-311-1/+1
| | | | | | | | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* | libceph: fix null dereference when unregistering linger requestsSage Weil2011-03-291-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | We should only clear r_osd if we are neither registered as a linger or a regular request. We may unregister as a linger while still registered as a regular request (e.g., in reset_osd). Incorrectly clearing r_osd there leads to a null pointer dereference in __send_request. Also simplify the parallel check in __unregister_request() where we just removed r_osd_item and know it's empty. Signed-off-by: Sage Weil <sage@newdream.net>
* | ceph: unlock on error in ceph_osdc_start_request()Dan Carpenter2011-03-291-1/+3
| | | | | | | | | | | | | | There was a missing unlock on the error path if __map_request() failed. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
* | ceph: fix possible NULL pointer dereferenceMariusz Kozlowski2011-03-261-1/+1
|/ | | | | | | This patch fixes 'event_work' dereference before it is checked for NULL. Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: add lingering request and watch/notify event frameworkYehuda Sadeh2011-03-221-12/+373
| | | | | | | | | | | | | | 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>
* libceph: fix osd request queuing on osdmap updatesSage Weil2011-03-211-133/+122
| | | | | | | | | | | | | | | | | | | | | | | 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>
* ceph: explicitly specify page alignment in network messagesSage Weil2010-11-091-0/+3
| | | | | | | | | | | | | | The alignment used for reading data into or out of pages used to be taken from the data_off field in the message header. This only worked as long as the page alignment matched the object offset, breaking direct io to non-page aligned offsets. Instead, explicitly specify the page alignment next to the page vector in the ceph_msg struct, and use that instead of the message header (which probably shouldn't be trusted). The alloc_msg callback is responsible for filling in this field properly when it sets up the page vector. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: make page alignment explicit in osd interfaceSage Weil2010-11-091-8/+14
| | | | | | | | | | | We used to infer alignment of IOs within a page based on the file offset, which assumed they matched. This broke with direct IO that was not aligned to pages (e.g., 512-byte aligned IO). We were also trusting the alignment specified in the OSD reply, which could have been adjusted by the server. Explicitly specify the page alignment when setting up OSD IO requests. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: factor out libceph from Ceph file systemYehuda Sadeh2010-10-201-0/+1773
This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil <sage@newdream.net>
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