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

[jbrassow@sourceware.org]

CVSROOT:	/cvs/cluster
Module name:	cluster
Branch: 	RHEL4
Changes by:	jbrassow@sourceware.org	2007-04-26 17:54:49

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

Log message:
	Bug 238031: cluster mirrors not handling all recovery/write conflicts
	
	Problem is that the kernel (main mirror code) does not do any marks/clears when
	writing to a region before its recovery.  So, it is not possible for the server
	to detect a conflict.  Basically, we must turn back on the
	'is_remote_recovering' function and disallow any writes to regions that are OR
	WILL BE recovering.
	
	It's really going to cause some pain during writes while mirrors are re-syncing.
	The better fix for the future is to have the writes always mark/clear the
	regions - then we can again remove the 'is_remote_recovering' function.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/cmirror-kernel/src/dm-cmirror-client.c.diff?cvsroot=cluster&only_with_tag=RHEL4&r1=1.1.2.46&r2=1.1.2.47
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/cmirror-kernel/src/dm-cmirror-server.c.diff?cvsroot=cluster&only_with_tag=RHEL4&r1=1.1.2.34&r2=1.1.2.35