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2012-11-08drbd: Rename drbd_release_ee() to drbd_free_peer_reqs()Andreas Gruenbacher3-11/+11
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Rename drbd_free_ee() and variants to *_peer_req()Andreas Gruenbacher3-26/+26
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Rename drbd_alloc_ee() to drbd_alloc_peer_req()Andreas Gruenbacher3-10/+11
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: drbd_init_ee() no longer existsAndreas Gruenbacher2-5/+0
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Make all asynchronous command handlers return 0 upon success and an error code otherwiseAndreas Gruenbacher1-36/+33
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: validate_req_change_req_state(): Return 0 upon success and an error code otherwiseAndreas Gruenbacher1-13/+13
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Removed outdated comments and code that envisioned VNRs in header 95Andreas Gruenbacher3-5/+4
Since have now header 100, that has space for 16 bit volume numbers, the high byte of the length in header 95 is no longer reserved for 8 bit volume numbers. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Introduce protocol version 100 headersAndreas Gruenbacher4-10/+47
The 8 byte header finally becomes too small. With the protocol 100 header we have 16 bit for the volume number, proper 32 bit for the data length, and 32 bit for further extensions in the future. Previous versions of drbd are using version 80 headers for all packets short enough for protocol 80. They support both header versions in worker context, but only version 80 headers in asynchronous context. For backwards compatibility, continue to use version 80 headers for short packets before protocol version 100. From protocol version 100 on, use the same header version for all packets. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Remove headers from on-the-wire data structures (struct p_*)Andreas Gruenbacher4-154/+110
Prepare the introduction of the protocol 100 headers. The actual protocol header is removed for the packet declarations. I.e. allow us to use the packets with different headers. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Remove some fixed header size assumptionsAndreas Gruenbacher3-34/+35
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Remove now-unused int_dig_out bufferAndreas Gruenbacher3-11/+0
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Replace and remove old primitivesAndreas Gruenbacher4-373/+319
Centralize sock->mutex locking and unlocking in [drbd|conn]_prepare_command() and [drbd|conn]_send_comman(). Therefore all *_send_* functions are touched to use these primitives instead of drbd_get_data_sock()/drbd_put_data_sock() and former helper functions. That change makes the *_send_* functions more standardized. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Introduce drbd_header_size()Andreas Gruenbacher3-4/+21
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Introduce new primitives for sending commandsAndreas Gruenbacher2-0/+73
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: drbd_send_ping(), drbd_send_ping(): Return 0 upon success and an error code otherwiseAndreas Gruenbacher2-4/+4
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Use tconn in request_timer_fn()Philipp Reisner2-7/+9
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Improved logging of state changesPhilipp Reisner2-15/+32
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Implemented IO thawing for multiple volumesPhilipp Reisner1-32/+40
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Implemented conn_lowest_disk()Philipp Reisner2-0/+13
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Implemented conn_lowest_conn()Philipp Reisner3-1/+14
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Calculate and provide ns_min to the w_after_conn_state_ch() workPhilipp Reisner1-11/+31
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Renamed nms to ns_maxPhilipp Reisner1-8/+8
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Introduced a new type union drbd_dev_statePhilipp Reisner6-14/+45
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Moved susp, susp_nod and susp_fen to the connection objectPhilipp Reisner2-1/+12
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Renamed id_susp(union drbd_state s) to drbd_suspended(struct drbd_conf *)Philipp Reisner6-12/+17
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Introduced drbd_read_state()Philipp Reisner6-20/+27
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: improvements to activate/deactivate multiple activity log extentsLars Ellenberg1-23/+23
Recent commit drbd: get rid of bio_split, allow bios of "arbitrary" size had a reference count leak: it only deactivated the first of several activity log extents for intervals crossing extent boundaries. This commit generalizes on bios spanning multiple activity log extents in drbd_al_begin_io, and adds the necessary loop around lc_put in drbd_al_complete_io as well. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: get rid of bio_split, allow bios of "arbitrary" sizeLars Ellenberg2-83/+27
Where "arbitrary" size is currently 1 MiB, which is the BIO_MAX_SIZE for architectures with 4k PAGE_CACHE_SIZE (most). Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: prepare to activate two activity log extents at onceLars Ellenberg1-5/+13
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: preparation commit, pass drbd_interval to drbd_al_begin/complete_ioLars Ellenberg5-19/+19
We want to avoid bio_split for bios crossing activity log boundaries. So we may need to activate two activity log extents "atomically". drbd_al_begin_io() needs to know more than just the start sector. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: introduce the "initialized" activity log transaction typeLars Ellenberg1-2/+14
So we can initialize a clean on disk activity log area, without the module complaining with loud assert messages because of checksum or magic value mismatches. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Change how the "handshake" packets are calledAndreas Gruenbacher3-19/+19
Packets of type P_HAND_SHAKE define which protocol versions and features a node supports. For clarity, call those packets P_CONNECTION_FEATURES instead. (This does not determine the features that a specific drbd device supports, such as drbd protocol A, B, C.) Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Change how the initial packets are calledAndreas Gruenbacher3-10/+10
The first packets exchanged when a connection is established are referred to as P_HAND_SHAKE_S and P_HAND_SHAKE_M in the code, followed by P_HAND_SHAKE packets. To avoid confusion between these two unrelated things, call the initial packets P_INITIAL_DATA and P_INITIAL_META. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: _conn_send_cmd(), _drbd_send_cmd(): Pass a struct drbd_socket instead of a plain socketAndreas Gruenbacher4-22/+22
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: drbd_connect(): Initialize struct drbd_socket before sending anythingAndreas Gruenbacher1-32/+34
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Map from (connection, volume number) to device in the asender handlersAndreas Gruenbacher1-55/+82
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Pass struct packet_info down to the asender receive functionsAndreas Gruenbacher1-18/+18
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Do not segfault if a sync dependency reaches a diskless devicePhilipp Reisner1-0/+2
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Allow to disconnect if one volume is disklessPhilipp Reisner3-1/+8
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Print common state changes of all volumes as connection state changesPhilipp Reisner2-104/+66
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Fixed logging of old connection statePhilipp Reisner1-30/+87
During a disconnect the oc variable in _conn_request_state() could become outdated. Determin the common old state after sleeping. While at it, I implemented that for all parts of the state Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Use the idr_for_each_entry() iterator instead of idr_for_each()Philipp Reisner1-74/+74
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Map from (connection, volume number) to device in the receive handlersAndreas Gruenbacher1-98/+164
The receive handlers do not all handle unknown volume numbers the same way. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Pass struct packet_info down to the receive functionsAndreas Gruenbacher1-85/+65
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Remove useless error messagesAndreas Gruenbacher1-6/+2
These messages can only trigger in case there is a pretty obvious internal programming error. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: A small cleanup in drbdd()Andreas Gruenbacher1-7/+9
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: _drbd_send_bitmap(): Use the pre-allocated send bufferAndreas Gruenbacher1-19/+7
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Preallocate one page per drbd_socket as a send bufferAndreas Gruenbacher4-26/+9
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: receive_bitmap(): Use the pre-allocated receive bufferAndreas Gruenbacher1-16/+5
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-08drbd: Preallocate one page per drbd_socket as a receive bufferAndreas Gruenbacher3-37/+54
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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