- a new function sync_request() that can be called by a user to execute
synchronization on request of a specified service.
git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@1280 fd59a12c-fef9-0310-b244-a6a79926bd2f
using CUnit. With this patch, amf.c can handle a full totem send queue.
This is not easily reproducable with function test.
amf.c is also prepared for further component testing with this patch.
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A mechanism to defer and recall simultaneous
events in the state machines for amf_cluster,
amf_application and amf_sg.
The implication of this defer and recall mechanism is
that it's now possible to to recover from e.g. several
simultaneous SU failures in an ordered serialized manner.
The events that could be deferred/recalled so far is
SG_FAILOVER_NODE_EV,SG_START_EV,SG_FAILOVER_SU_EV,
CLUSTER_SYNC_READY_EV,APPLICATION_START_EV and
APPLICATION_ASSIGN_WORKLOAD_EV.
Files involved:
Index: exec/amfnode.c
Index: exec/amfsg.c
Index: exec/amfutil.c
Index: exec/amfapp.c
Index: exec/amfcomp.c
Index: exec/amfcluster.c
Index: exec/amf.h
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and joins the cluster quickly (within one second is default), the config
change messages will not indicate that the node left and rejoined. The patch
introduces a short delay in main() to make sure the token_timeout expires.
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The instantiaton of the component is performed with some new steps:
1. SU invoke Comp to instantiate
2. Comp multicast a new event
MESSAGE_REQ_EXEC_AMF_COMPONENT_INSTANTIATE
3. Comp receive the new event
MESSAGE_REQ_EXEC_AMF_COMPONENT_INSTANTIATE
4. If the Comp is within the SU hosted on the node. The
component invokes
the clc_cli instantiate script to start the component
and start a timer
to supervise the start and registration of the component.
5. If the instantiation time elapse before the component has
registered himself
Comp is sending a new multicasted event
MESSAGE_REQ_EXEC_AMF_COMPONENT_INSTANTIATE_TMO.
6. Comp receive
MESSAGE_REQ_EXEC_AMF_COMPONENT_INSTANTIATE_TMO event.
7. The Comp presence state is set to
SA_AMF_PRESENCE_INSTANTIATION_FAILED
8. When all Components are in presence state
SA_AMF_PRESENCE_INSTANTIATED or
SA_AMF_PRESENCE_INSTANTIATION_FAILED the start or restart will
continue with
the assignment of load.
This implemntation means that the complete instantiation procedure
never will be endlessly waiting for a register. The
instantiation will
either turn out in a component instantiation failure or a success.
Hardening of the cluster start use case:
1. A clearer separation of the responsibilities between
amf_cluster and
amf_application.
2. A clearer interface and separation between amf_main (amf.c) and
amf_cluster.
3. A clearer interface and separation between amf_cluster
and amf_node.
4. A clearer separation of the responsibilities between amf_node and
amf_application.
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2- On Solaris, the SA components executed have no names.
3- When killing the testamf1 component, it makes the aisexec process
crash on both of my nodes.
4- max priority for RR on solaris is 59.
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initially in an order such that at least two nodes start after at least one
node has been started and its SUs has been instantiated.
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asymmetrically distribute the SG:s among the Nodes.
2. strcmp bug fixes several *_find functions.
3. Minor bug fixes.
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The call to gethostbyaddr() has been removed. This has been replaced by a
protocol where each node multicasts its hostname (obtained with gethostname()).
- "Logical AMF nodes"
The AMF node name is no longer a hostname. The saAmfNodeClmNode
configuration attribute of the AMF node is now the hostname. This config
attribute is now mandatory. The change to amf.conf file shows required changes.
- Some other AMF sync bug fixes
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be used to disable a certain logger source.
- when DEBUG compiled it does not use the new printer threads (printouts are not buffered)
- man page update
- openais.conf update
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2. Improvement of the use case 'Amf node join'
3. Improvement to manage more than one SG within an Application.
4. Improvement to manage an arbitrary number of Csi-assignments associated
to the Csi
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- One AMF node reads the AMF config file (IMM style)
- One AMF node syncs others AMF nodes
- One AMF object is serialized and sent as one message
- Serialization/deserialization of most objects is trivial (memcpy)
except for component and csi-attributes objects which have variable size
arrays/strings.
- Depth first AMF object tree traversal preserves relations when syncing
- Ordered lists of SUs and SIs
- Constructors/destructor per class
- Serializers/deserializers per class
- Config-change changes sync state
- Sync callbacks executes the sync
- "Use case" tracing for sync using the SYNCTRACE macro (trace6)
- Sync master is initially the winner of a timeout race and if the
master leaves the cluster, the node with the lowest node ID becomes new master.
- amf_malloc implements an AMF central malloc routine with error handling.
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either IPv4 or IPv6 addresses, or both.
As we get the (unambiguous) multicast address first, we can make sure we always
look for the right type of node address afterwards.
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- Most runtime attributes in the inf. model calculated in runtime from
more fundamental information. (improves consistency)
- sg_assign_si can now recalculate workloads considering existing
assignments
- Logging improvements, similar to what is required as notification in
AMF spec.
- CLC-CLI INSTANTIATE now exits aisexec when it fails (should later be
sent as an NTF alarm)
- CLC-CLI CLEANUP correctly handles already terminated processes
- testamf1.c printouts removed for normal operation
- Iterator functions for SI/CSI assignments
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of the same service unit. Also fixes problem where AMF asserts if two or
more components are specified in a service unit.
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- Revised cluster start
- Includes Steven's "amf invalid write patch"
- Includes "components not started with 0.76" patch
- New timer API use backed out of AMF (temporary)
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model). A central header file (amf.h) keeps all the definitions and
prototypes needed.
New things apart from that:
- some doxygen html generated from AMF e.g. each file has a description
- saAmfHAStateGet() now works
- component invoked healthchecks implemented (but not tested)
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- Use of Distinguished Names (DN) in API and multicast messages
- CSI resassignment properly handled (by using restarting state)
- State 'setter' functions with uniform printouts
- Simple 'assign SU to host' algorithm:
- based on saAmfSUHostedByNode config attribute
- see config file for example
- Debug print runtime attributes upon user request:
$ pkill -USR2 aisexec
- Object-oriented naming of functions started (but not finished)
- testamf1.c updated with some new tests
- Minor fix in print.h and print.c
- AMF can be started on two nodes (example config file needs
modification for this)
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