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OpenCloudOS-Kernel
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677 Commits

Author SHA1 Message Date
Philipp Reisner 8e0af25fa8 drbd: Moved susp, susp_nod and susp_fen to the connection object 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:45:03 +01:00
Philipp Reisner 2aebfabb17 drbd: Renamed id_susp(union drbd_state s) to drbd_suspended(struct drbd_conf *) 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:45:03 +01:00
Philipp Reisner 78bae59b1b drbd: Introduced drbd_read_state() 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:45:03 +01:00
Lars Ellenberg e15766e9c9 drbd: improvements to activate/deactivate multiple activity log extents 
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>
 2012-11-08 16:45:02 +01:00
Lars Ellenberg 23361cf32b drbd: get rid of bio_split, allow bios of "arbitrary" size 
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>
 2012-11-08 16:45:02 +01:00
Lars Ellenberg 7726547e67 drbd: prepare to activate two activity log extents at once 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:45:01 +01:00
Lars Ellenberg 181286ad22 drbd: preparation commit, pass drbd_interval to drbd_al_begin/complete_io 
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>
 2012-11-08 16:45:01 +01:00
Lars Ellenberg 85f103d88c drbd: introduce the "initialized" activity log transaction type 
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>
 2012-11-08 16:45:01 +01:00
Andreas Gruenbacher 6038178ebe drbd: Change how the "handshake" packets are called 
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>
 2012-11-08 16:45:00 +01:00
Andreas Gruenbacher e5d6f33abe drbd: Change how the initial packets are called 
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>
 2012-11-08 16:45:00 +01:00
Andreas Gruenbacher 7c96715aa8 drbd: _conn_send_cmd(), _drbd_send_cmd(): Pass a struct drbd_socket instead of a plain socket 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:59 +01:00
Andreas Gruenbacher 2bf896213d drbd: drbd_connect(): Initialize struct drbd_socket before sending anything 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:59 +01:00
Andreas Gruenbacher 1952e9166a drbd: Map from (connection, volume number) to device in the asender handlers 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:59 +01:00
Andreas Gruenbacher e05e1e59db drbd: Pass struct packet_info down to the asender receive functions 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:58 +01:00
Philipp Reisner 438c8374ae drbd: Do not segfault if a sync dependency reaches a diskless device 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:58 +01:00
Philipp Reisner 778bcf2e29 drbd: Allow to disconnect if one volume is diskless 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:58 +01:00
Philipp Reisner 435693e89b drbd: Print common state changes of all volumes as connection state changes 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:57 +01:00
Philipp Reisner 88ef594ed7 drbd: Fixed logging of old connection state 
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>
 2012-11-08 16:44:57 +01:00
Philipp Reisner bd0c824a9d drbd: Use the idr_for_each_entry() iterator instead of idr_for_each() 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:56 +01:00
Andreas Gruenbacher 4a76b1612f drbd: Map from (connection, volume number) to device in the receive handlers 
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>
 2012-11-08 16:44:56 +01:00
Andreas Gruenbacher e28572167c drbd: Pass struct packet_info down to the receive functions 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:56 +01:00
Andreas Gruenbacher 49ba9b1bb3 drbd: Remove useless error messages 
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>
 2012-11-08 16:44:55 +01:00
Andreas Gruenbacher deebe19579 drbd: A small cleanup in drbdd() 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:55 +01:00
Andreas Gruenbacher 79ed9bd053 drbd: _drbd_send_bitmap(): Use the pre-allocated send buffer 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:54 +01:00
Andreas Gruenbacher 5a87d920f3 drbd: Preallocate one page per drbd_socket as a send buffer 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:54 +01:00
Andreas Gruenbacher fc56815c81 drbd: receive_bitmap(): Use the pre-allocated receive buffer 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:54 +01:00
Andreas Gruenbacher e6ef8a5cb3 drbd: Preallocate one page per drbd_socket as a receive buffer 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:53 +01:00
Philipp Reisner cb703454a2 drbd: Converted drbd_try_outdate_peer() from mdev to tconn 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:53 +01:00
Andreas Gruenbacher a02d124091 drbd: Rename the DCBP_* functions to dcbp_* and move them to where they are used 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:52 +01:00
Andreas Gruenbacher 058820cdd7 drbd: Make _drbd_send_bitmap() static 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:52 +01:00
Andreas Gruenbacher e307f352b4 drbd: Move drbd_send_ping() and drbd_send_ping_ack() to drbd_main.c 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:52 +01:00
Andreas Gruenbacher 0916e0e308 drbd: Always use the same protocol version for the same peer 
There is no need to send protocol 80 headers to peers that understand
protocol 95 headers.  Make sure that we don't send protocol 95 headers
until we have agreed upon a protocol version with our peer, though.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:51 +01:00
Andreas Gruenbacher 0829f5edf3 drbd: drbd_connected(): Return an error code upon failure. 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:51 +01:00
Andreas Gruenbacher a5c3190435 drbd: Introduce and use drbd_recv_all_warn() 
The pattern of receiving a fixed number of bytes and warning if a short
packet is received and the receiver has not actively been interruped is
repeated many times; clean that up.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:50 +01:00
Andreas Gruenbacher 309a834896 drbd: Get rid of typedef drbd_work_cb 
This type is not used anywhere else.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:50 +01:00
Andreas Gruenbacher 8f7bed7774 drbd: Rename various functions from *_oos_* to *_out_of_sync_* for clarity 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:50 +01:00
Andreas Gruenbacher 0da34df0d0 drbd: drbd_may_do_local_read(): Use bool/true/false 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:49 +01:00
Andreas Gruenbacher 1097e9a80c drbd: Remove unnecessary assertion 
This is also checked further below in the same function.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:49 +01:00
Andreas Gruenbacher 69f5ec728c drbd: Remove duplicate initialization 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:49 +01:00
Andreas Gruenbacher 3fbf4d21ae drbd: drbd_md_sync_page_io(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:48 +01:00
Andreas Gruenbacher ac29f4039a drbd: _drbd_md_sync_page_io(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:48 +01:00
Andreas Gruenbacher 22ab6a30b8 drbd: drbd_bm_read() never returns a positive value through drbd_bitmap_io() 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:47 +01:00
Andreas Gruenbacher 82bc01940a drbd: Make all command handlers return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:47 +01:00
Andreas Gruenbacher c696774691 drbd: Add drbd_recv_all(): Receive an entire buffer 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:47 +01:00
Andreas Gruenbacher a982dd579c drbd: send_bitmap_rle_or_plain(): Error handling cleanup 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:46 +01:00
Andreas Gruenbacher e1c1b0fc8f drbd: recv_resync_read(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:46 +01:00
Andreas Gruenbacher 28284ceff0 drbd: recv_dless_read(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:45 +01:00
Andreas Gruenbacher fc5be8397f drbd: drbd_drain_block(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:45 +01:00
Andreas Gruenbacher 69bc7bc351 drbd: drbd_recv_header(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:45 +01:00
Andreas Gruenbacher 8172f3e9bf drbd: decode_header(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:44 +01:00
Andreas Gruenbacher e2b3032b90 drbd: drbd_process_done_ee(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:44 +01:00
Andreas Gruenbacher 99920dc5c5 drbd: Make all worker callbacks return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:43 +01:00
Andreas Gruenbacher b2f0ab62ec drbd: Temporarily change the return type of all worker callbacks 
This helps to ensure that we don't miss one of them when changing their
return value semantics.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:43 +01:00
Andreas Gruenbacher a896527c06 drbd: drbd_send_short_cmd(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:43 +01:00
Andreas Gruenbacher 6bdb9b0e23 drbd: drbd_send_dblock(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:42 +01:00
Andreas Gruenbacher 7fae55da38 drbd: _drbd_send_bio(), _drbd_send_zc_bio(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:42 +01:00
Andreas Gruenbacher 7b57b89d62 drbd: drbd_send_block(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:42 +01:00
Andreas Gruenbacher 9f69230cd6 drbd: _drbd_send_zc_ee(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:41 +01:00
Andreas Gruenbacher 88b390ff63 drbd: _drbd_send_page(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:41 +01:00
Andreas Gruenbacher b987427b53 drbd: _drbd_no_send_page(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:40 +01:00
Andreas Gruenbacher 73218a3c4c drbd: drbd_send_oos(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:40 +01:00
Andreas Gruenbacher db1b0b724e drbd: drbd_send_drequest_csum(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:40 +01:00
Andreas Gruenbacher 6c1005e74d drbd: drbd_send_drequest(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:39 +01:00
Andreas Gruenbacher 5b9f499c66 drbd: drbd_send_ov_request(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:39 +01:00
Andreas Gruenbacher fa79abd893 drbd: drbd_send_ack_ex(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:38 +01:00
Andreas Gruenbacher a9a9994dc7 drbd: drbd_send_ack_{dp,rp}(): Return void: the result is never used 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:38 +01:00
Andreas Gruenbacher dd5161218b drbd: drbd_send_ack(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:38 +01:00
Andreas Gruenbacher a8c32aa846 drbd: _drbd_send_ack(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:37 +01:00
Andreas Gruenbacher d4e67d7c4f drbd: drbd_send_b_ack(): Return void: the result is never used 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:37 +01:00
Andreas Gruenbacher 2f4e7abe51 drbd: drbd_send_sr_reply(): Return void: the result is never used 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:36 +01:00
Andreas Gruenbacher d24ae219e9 drbd: drbd_send_state_req(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:36 +01:00
Andreas Gruenbacher caee1c3a92 drbd: conn_send_state_req(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:36 +01:00
Andreas Gruenbacher 758970c832 drbd: _conn_send_state_req(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:35 +01:00
Andreas Gruenbacher f02d4d0a9c drbd: drbd_send_sizes(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:35 +01:00
Andreas Gruenbacher 9c1b7f7282 drbd: drbd_gen_and_send_sync_uuid(): Return void: the result is never used 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:34 +01:00
Andreas Gruenbacher 2ae5f95b1a drbd: drbd_send_uuids() and its variants: Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:34 +01:00
Andreas Gruenbacher 387eb30817 drbd: drbd_send_protocol(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:34 +01:00
Andreas Gruenbacher e8d17b015e drbd: drbd_send_handshake(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:33 +01:00
Andreas Gruenbacher 927036f908 drbd: drbd_send_state(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:33 +01:00
Andreas Gruenbacher 103ea27528 drbd: drbd_send_sync_param(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:33 +01:00
Andreas Gruenbacher f725446353 drbd: drbd_send_cmd(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:32 +01:00
Andreas Gruenbacher 7d168ed30f drbd: Get rid of USE_DATA_SOCKET and USE_META_SOCKET 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:32 +01:00
Andreas Gruenbacher 596a37f9ef drbd: conn_send_cmd(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:31 +01:00
Andreas Gruenbacher 04dfa13788 drbd: _drbd_send_cmd(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:31 +01:00
Andreas Gruenbacher ecf2363cb5 drbd: _conn_send_cmd(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:31 +01:00
Andreas Gruenbacher ce9879cb1f drbd: conn_send_cmd2(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:30 +01:00
Andreas Gruenbacher fb708e408f drbd: Add drbd_send_all(): Send an entire buffer 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:30 +01:00
Andreas Gruenbacher 11b0be28e5 drbd: drbd_get_data_sock(): Return 0 upon success and an error code otherwise 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:29 +01:00
Andreas Gruenbacher c0d42c8e57 drbd: drbd_send(): Return a "real" error code if we have no socket 
Q: Can this case even trigger?  Is failing this way any better than one
that causes a NULL pointer access?

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:29 +01:00
Philipp Reisner e90285e0ba drbd: Fixed conn_lowest_minor 
It actually returned the lowest volume number. While doing that
renamed a few wrongly named variables.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:28 +01:00
Lars Ellenberg f399002e68 drbd: distribute former syncer_conf settings to disk, connection, and resource level 
This commit breaks the API again.

Move per-volume former syncer options into disk_conf.
Move per-connection former syncer options into net_conf.
Renamed the remainign sync_conf to res_opts

Syncer settings have been changeable at runtime, so we need to prepare
for these settings to be runtime-changeable in their new home as well.

Introduce new configuration operations, and share the netlink attribute
between "attach" (create new disk) and "disk-opts" (change options).
Same for "connect" and "net-opts".

Some fields cannot be changed at runtime, however.
Introduce a new flag GENLA_F_INVARIANT to be able to trigger on that in
the generated validation and assignment functions.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-08 16:44:20 +01:00
Philipp Reisner 6b75dced00 drbd: conn_khelper() for user mode callbacks for connections 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:32 +01:00
Philipp Reisner 047e95e259 drbd: Allow volumes to become primary only on one side 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:31 +01:00
Lars Ellenberg 40cbf085f5 drbd: fix conn_reconfig_start without conn_reconfig_done in drbd_adm_attach 
If drbd_adm_attach failed early, it left the CONFIG_PENDING bit on,
blocking any further conn_reconfig_start on that connection.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:31 +01:00
Philipp Reisner e4f78edee1 drbd: Separate connection state changes from minor dev state changes #2 
New function got_conn_RqSReply()

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:30 +01:00
Philipp Reisner f19e4f8ba7 drbd: Converted got_Ping() and got_PingAck() from mdev to tconn 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:30 +01:00
Philipp Reisner a4fbda8eca drbd: Allow packet handler functions that take a connection (meta connection) 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:29 +01:00
Philipp Reisner dfafcc8a7b drbd: Separate connection state changes from minor dev state changes #1 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:28 +01:00
Philipp Reisner 7204624c5e drbd: Converted receive_protocol() from mdev to tconn 
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:28 +01:00
Philipp Reisner d9ae84e790 drbd: Allow packet handler functions that take a connection 
That is necessary in case a connection does not have a volume 0

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
 2012-11-04 00:16:27 +01:00