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d7e205d197
- rename generic.in and notifyd.in to corosync.in and corosync-notifyd.in (makes build simpler) - fix sysvinit corosync.in sleep time to include a check for when IPC are ready and drop cman bits (there is no cman with corosync 2.0) - corosync-notifyd.service should always start after corosync.service - corosync.service should always start after network - corosync.service uses init script wrapper - install/ship sysvinit as wrappers for systemd in /usr/share/corosync when necessary - change the build system to deal with all of the above Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com> Reviewed-by: Jan Friesse <jfriesse@redhat.com>
98 lines
4.4 KiB
Plaintext
98 lines
4.4 KiB
Plaintext
--------------------------------------------------------
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The Corosync Cluster Engine Topic Branches and Backlog
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--------------------------------------------------------
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----------------------------
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Last Updated: May 2012
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----------------------------
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--------------------------------------
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Current priority list for Needle 2.1
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--------------------------------------
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* disallow binding to localhost (Honza)
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* don't rely on mcast loop (Honza)
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* Add support for LOG_TRACE and log received messages in this level (Honza)
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* Proper support for DNS (always return one address even if function
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is called multiple times) (Honza)
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* porting of qdisk to votequorum and eventually finalize qdevice API
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in votequorum. (Fabio)
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* Cleaner shutdown process -> free memory (Fabio)
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--------------------------------------
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Current priority list for Needle 2.X
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--------------------------------------
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* logsys glue layer removal
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* harden and finish ykd algorithm
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* implement topic-xmlschema
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* Modify totemsrp to allow dynamic definitions of the ring counts
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to allow a larger number of redundant rings then 2.
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* Investigate always-on flight recorder
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* support more encryption methods (other than none/aes256) from nss
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* implement topic-rdmaud
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--------------------------------
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Ideas for future releases (3.0+)
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--------------------------------
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* topic-netmalloc
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* doxygenize include and lib directories.
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* re-evaluate using libtool to link libraries.
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* Support for clang as compiler (depends on libtool)
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* reorganize library/headers/code in the tree
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* change and simplify build defaults
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* libtotem cleanup/rewrite
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* Rewrite totem fragmentation layer
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* rewrite top level totempg interface
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* Split fragmentation layer in totem (ie: totempg talks to totemfrg
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talks to totemsrp)
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* Add a getopt and setopt feature to top level interface to allow
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runtime configuration of the interface
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* Improve cpg - opaque data in callbacks (client stores data about
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itself, every node can access them), permissions (read only/read
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write/ some application may disable listeners) - Probably implemented
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as extra user space library on top of normal cpg
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* Better statistic - histogram
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* totem multiring
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* load balancing over different speed links in RRP
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We use topic branches in our git repository to develop new disruptive features
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that define our future roadmap. This file describes the topic branches
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the developers have interest in investigating further.
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targets can be: needle2.1, needle2.X, or future (3.0).
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Once in a shipped version, please remove from the topic list.
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------------------------------------------------------------------------------
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topic-xmlschema
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------------------------------------------------------------------------------
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XML configuration for corosync exists, but imput file is not checked against
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XML schema. This topic is about implementing preferably RelaxNG schema of
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corosync configuration.
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------------------------------------------------------------------------------
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topic-onecrypt
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------------------------------------------------------------------------------
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Currently encryption code is located in totemudp.c, totemudpu.c, and iba has
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no encryption support. This topic merges the encryption code into a new
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file such as totemcrp.c and provides a mechanism for totemnet.c to register
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encrypt and decrypt functions with totem[udp|iba|udpu] and use them as
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requested by the configuration.
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------------------------------------------------------------------------------
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topic-netmalloc
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------------------------------------------------------------------------------
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The totemiba.c driver must allocate memory and assign it to a protection domain
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in order for an infiniband driver to transmit memory. In the current
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implementation, totemsrp.c also allocates these same frames. This results in
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an extra memcpy when transmitting with libibverbs technology. Memory copies
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are to be avoided. The simple solution is to have each network driver provide
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a memory allocation function. When totemsrp wants a free frame, it requests
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it from the network driver.
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------------------------------------------------------------------------------
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topic-rdmaud
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------------------------------------------------------------------------------
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Currently our RDMA code uses librdmacm to setup connections. We are not
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certain this extra library is needed, and may be able to use only ibverbs. If
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this is possible, the totem code may be more reliable, especially around
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failure conditions.
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