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path: root/drivers/block/drbd/drbd_int.h
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| * drbd: Load balancing of read requestsPhilipp Reisner2012-11-081-0/+1
| | | | | | | | | | | | | | | | New config option for the disk secition "read-balancing", with the values: prefer-local, prefer-remote, round-robin, when-congested-remote. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Remove leftover prototypeAndreas Gruenbacher2012-11-081-2/+0
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Move list of epochs from mdev to tconnPhilipp Reisner2012-11-081-3/+3
| | | | | | | | | | | | | | | | This is necessary since the transfer_log on the sending is also per tconn. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Prepare epochs per connectionPhilipp Reisner2012-11-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | An epoch object needs a pointer to the mdev it was received for. This is necessary to be able to send the barrier ack packet for the same volume as the original barrier packet was assigned to. This prepares the next step, in which the (receiver side) epoch list is moved from the device (mdev) to the connection (tconn) object. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Move write_ordering from mdev to tconnPhilipp Reisner2012-11-081-2/+4
| | | | | | | | | | | | | | | | This is necessary in order to prepare the move of the (receiver side) epoch list from the device (mdev) to the connection (tconn) objects. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Move the CREATE_BARRIER flag from connection to devicePhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | That is necessary since the whole transfer log is per connection(tconn) and not per device(mdev). This bug caused list corruption on the worker list. When a barrier is queued for sending in the context of one device, another device did not see the CREATE_BARRIER bit, and queued the same object again -> list corruption. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Fixes from the drbd-8.3 branchPhilipp Reisner2012-11-081-2/+2
| | | | | | | | | | | | | | | | | | * drbd-8.3: drbd: O_SYNC gives EIO on ramdisks for some kernels (eg. RHEL6). drbd: send intermediate state change results to the peer Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Consider the discard-my-data flag for all volumes [bugz 359]Philipp Reisner2012-11-081-0/+1
| | | | | | | | | | | | | | ...not only for the first volume Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: on attach, enforce clean meta dataLars Ellenberg2012-11-081-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Detection of unclean shutdown has moved into user space. The kernel code will, whenever it updates the meta data, mark it as "unclean", and will refuse to attach to such unclean meta data. "drbdadm up" now schedules "drbdmeta apply-al", which will apply the activity log to the bitmap, and/or reinitialize it, if necessary, as well as set a "clean" indicator flag. This moves a bit code out of kernel space. As a side effect, it also prevents some 8.3 module from accidentally ignoring the 8.4 style activity log, if someone should downgrade, whether on purpose, or accidentally because he changed kernel versions without providing an 8.4 for the new kernel, and the new kernel comes with in-tree 8.3. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: detach from frozen backing devicePhilipp Reisner2012-11-081-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * drbd-8.3: documentation: Documented detach's --force and disk's --disk-timeout drbd: Implemented the disk-timeout option drbd: Force flag for the detach operation drbd: Allow new IOs while the local disk in in FAILED state drbd: Bitmap IO functions can not return prematurely if the disk breaks drbd: Added a kref to bm_aio_ctx drbd: Hold a reference to ldev while doing meta-data IO drbd: Keep a reference to the bio until the completion handler finished drbd: Implemented wait_until_done_or_disk_failure() drbd: Replaced md_io_mutex by an atomic: md_io_in_use drbd: moved md_io into mdev drbd: Immediately allow completion of IOs, that wait for IO completions on a failed disk drbd: Keep a reference to barrier acked requests Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Improve compatibility with drbd's older than 8.3.7Philipp Reisner2012-11-081-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Regression introduced with 8.3.11 commit: drbd: Take a more conservative approach when deciding max_bio_size Never ever tell an older drbd, that we support more than 32KiB in a single data request (packet). Never believe an older drbd, that is supports more than 32KiB in a single data request (packet) Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Fixes from the 8.3 development branchPhilipp Reisner2012-11-081-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * commit 'ae57a0a': drbd: Only print sanitize state's warnings, if the state change happens drbd: we should write meta data updates with FLUSH FUA drbd: fix limit define, we support 1 PiByte now drbd: fix log message argument order drbd: Typo in user-visible message. drbd: Make "(rcv|snd)buf-size" and "ping-timeout" available for the proxy, too. drbd: Allow keywords to be used in multiple config sections. drbd: fix typos in comments. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * DRBD: Fix comparison always false warning due to long/long long compareDavid Howells2012-11-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix warnings of the following nature in the drbd header: In file included from drivers/block/drbd/drbd_bitmap.c:32: drivers/block/drbd/drbd_int.h: In function 'drbd_get_syncer_progress': drivers/block/drbd/drbd_int.h:2234: warning: comparison is always false due to limited range of data where mdev->rs_total (an unsigned long) is being compared to 1ULL << 32, which is always false on a 32-bit machine. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Allow to pass resource options to the new-resource commandAndreas Gruenbacher2012-11-081-2/+2
| | | | | | | | | | | | | | This is equivalent to how the attach and connect commands work. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Convert the generic netlink interface to accept connection endpointsAndreas Gruenbacher2012-11-081-0/+7
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Split off netlink mandatory attribute handling into separate fileAndreas Gruenbacher2012-11-081-6/+0
| | | | | | | | | | | | | | Duplicate this file in the kernel module and in user space; both sides need it. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Also need to check for DRBD_GENLA_F_MANDATORY flags before ↵Andreas Gruenbacher2012-11-081-0/+6
| | | | | | | | | | | | | | | | | | | | nla_find_nested() This is done by introducing drbd_nla_find_nested() which handles the flag before calling nla_find_nested(). Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Send PROTOCOL_UPDATE packets when appropriatePhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Receiving part for the PROTOCOL_UPDATE packetPhilipp Reisner2012-11-081-1/+2
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: protect updates to integrits_tfm by tconn->data->mutexPhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | | | | | | | Since we need to hold that mutex anyways to make sure the peer gets that change in the right position in the data stream, it makes a lot of sense to use the same mutex to ensure existence of the tfm. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Fix the upper limit of resync-afterAndreas Gruenbacher2012-11-081-2/+2
| | | | | | | | | | | | | | | | | | | | The 32-bit resync_after netlink field takes a device minor number as parameter, which is no longer limited to 255. We cannot statically verify which device numbers are valid, so set the ummer limit to the highest possible signed 32-bit integer. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Refer to resync-rate consistently throughout the codeAndreas Gruenbacher2012-11-081-3/+3
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Rename the want_lose field/flag to discard_my_dataAndreas Gruenbacher2012-11-081-1/+1
| | | | | | | | | | | | | | | | This is what it is called in config files and on the command line as well. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Removing drbd_cfg_rwsemPhilipp Reisner2012-11-081-6/+3
| | | | | | | | | | | | | | | | | | | | | | * Updates to all configuration items is done under genl_lock(). Including removal of mdevs or tconns. * All read non sleeping read sides are protected by rcu * All sleeping read sides keep reference counts to keep the objects alive Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Refcounting for mdev objectsPhilipp Reisner2012-11-081-1/+2
| | | | | | | | | | | | | | Preparing removal of drbd_cfg_rwsem Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: RCU for rs_plan_sPhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | | | This removes the issue with using peer_seq_lock out of different contexts. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Made the fifo object a self contained object (preparing for RCU)Philipp Reisner2012-11-081-3/+4
| | | | | | | | | | | | | | | | | | * Moved rs_planed into it, named total * When having a pointer to the object the values can be embedded into the fifo object. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: RCU for disk_confPhilipp Reisner2012-11-081-10/+44
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Split drbd_alter_sa() into drbd_sync_after_valid() and ↵Philipp Reisner2012-11-081-1/+2
| | | | | | | | | | | | | | | | | | drbd_sync_after_changed() Preparing RCU for disk_conf Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: drbd_dew_dev_size() gets the user requests disk_size as argumentPhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | Preparing RCU for disk_conf Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Renamed the net_conf_update mutex to conf_updatePhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | Preparing to use the same mutex for disk_conf updates Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Generate the drbd_set_*_defaults() functions from drbd_genl.hAndreas Gruenbacher2012-11-081-1/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Introduce a "lockless" variant of drbd_send_protocoll()Andreas Gruenbacher2012-11-081-0/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Rename integrity_r_tfm -> peer_integrity_tfmAndreas Gruenbacher2012-11-081-1/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Rename integrity_w_tfm -> integrity_tfmAndreas Gruenbacher2012-11-081-1/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: on reconfiguration requests, mind the SET_DEFAULTS flagLars Ellenberg2012-11-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | The DRBD_GENL_F_SET_DEFAULTS flag was ignored for drbd_adm_disk_opts() and drbd_adm_net_opts(). Factor out drbd_set_*_defaults() helper functions, and call them appropriately. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Removed the OBJECT_DYING and the CONFIG_PENDING bitsPhilipp Reisner2012-11-081-6/+0
| | | | | | | | | | | | | | superseded by refcounting Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Take a reference on tconn when finding a tconn by namePhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | Rule #3 of kref.txt Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Basic refcounting for drbd_tconnPhilipp Reisner2012-11-081-2/+3
| | | | | | | | | | | | | | | | | | | | | | References hold by: * Each (running) drbd thread has a reference on tconn * Each mdev has a referenc on tconn * Beeing in the all_tconn list counts for one reference * Each after_conn_state_chg_work has a reference to tconn Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Eliminated drbd_free_resoruces() it is superseeded by conn_free_crypto()Philipp Reisner2012-11-081-1/+0
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: fix setsockopt for user mode linuxLars Ellenberg2012-11-081-13/+20
| | | | | | | | | | | | | | | | | | | | We use our own copy of kernel_setsockopt, and did not mess around with get_fs/set_fs, since we thought we knew we would always be KERNEL_DS anyways. Apparently not so for at least user mode linux, so put the set_fs(KERNEL_DS) in there. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Considering that the two_primaries config flag can changePhilipp Reisner2012-11-081-0/+4
| | | | | | | | | | | | | | | | | | | | Now since it is possible to change the two_primaries config flag while the connection is up, make sure we treat a peer_req in a consistent way if the config flag changes while the peer_req is under IO. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Proper locking for updates to net_conf under RCUPhilipp Reisner2012-11-081-26/+3
| | | | | | | | | | | | | | Removing the get_net_conf()/put_net_conf() functions Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: rcu_read_lock() and rcu_dereference() for tconn->net_confPhilipp Reisner2012-11-081-6/+9
| | | | | | | | | | | | | | Removing the get_net_conf()/put_net_conf() calls Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Runtime changeable wire protocolPhilipp Reisner2012-11-081-0/+6
| | | | | | | | | | | | | | | | | | | | | | The wire protocol is no longer a property that is negotiated between the two peers. It is now expressed with two bits (DP_SEND_WRITE_ACK and DP_SEND_RECEIVE_ACK) in each data packet. Therefore the primary node is free to change the wire protocol at any time without disconnect/reconnect. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: protect all idr accesses that might sleep with drbd_cfg_rwsemPhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | With this commit the locking for all accesses to IDRs is complete: * Non sleeping read accesses are protected by RCU * sleeping read accesses are protocted by a read lock on drbd_cfg_rwsem * accesses that add anything are protected by a write lock * accesses that remove an object are protoected by a write lock and a call to synchronize_rcu() after it is removed from the IDR and before the object is actually free()ed. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Converted drbd_cfg_mutex into drbd_cfg_rwsemPhilipp Reisner2012-11-081-1/+3
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Inlined drbd_free_mdev(); it got called only from one placePhilipp Reisner2012-11-081-1/+0
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: drbd_delete_device() takes a struct drbd_conf * nowPhilipp Reisner2012-11-081-1/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| * drbd: Rename drbd_pp_alloc() to drbd_alloc_pages() and make it non-staticAndreas Gruenbacher2012-11-081-0/+1
| | | | | | | | | | Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
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