cluster/cmirror-kernel/src dm-cmirror-client.c ...

[jbrassow at sourceware dot org]

CVSROOT:	/cvs/cluster
Module name:	cluster
Branch: 	RHEL4
Changes by:	jbrassow@sourceware.org	2007-02-20 19:35:10

Modified files:
	cmirror-kernel/src: dm-cmirror-client.c dm-cmirror-cman.c 
	                    dm-cmirror-cman.h dm-cmirror-server.c 

Log message:
	Bug 217895: lost election results from cmirror server cause mirror ...
	
	There was a race happening as a result of simultaneous cman issued
	'starts'.  The client receives the start requests, but the server
	processes them.  So, it was possible for the server to reset the
	event id/type while the client was trying to set them.  This would
	cause the next kcl_start_done command issued by the server to fail.
	
	The bug can be interpretted many different ways depending on which
	machine in the cluster you are looking at when it happens.
	
	The fix was to have the client wait to set the event id/type until
	it knows the server has completed the previous request.
	
	This fix may resolve other bugs as well, but I will test them
	individually.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/cmirror-kernel/src/dm-cmirror-client.c.diff?cvsroot=cluster&only_with_tag=RHEL4&r1=1.1.2.37&r2=1.1.2.38
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/cmirror-kernel/src/dm-cmirror-cman.c.diff?cvsroot=cluster&only_with_tag=RHEL4&r1=1.1.2.5&r2=1.1.2.6
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/cmirror-kernel/src/dm-cmirror-cman.h.diff?cvsroot=cluster&only_with_tag=RHEL4&r1=1.1.2.1&r2=1.1.2.2
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/cmirror-kernel/src/dm-cmirror-server.c.diff?cvsroot=cluster&only_with_tag=RHEL4&r1=1.1.2.22&r2=1.1.2.23