Issue 52 - zumastor - Reduce the overhead of bitmap updates during origin writes

Issue 52:	Reduce the overhead of bitmap updates during origin writes
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Status:	Fixed
Owner:	Daniel.Raymond.Phillips
Closed:	May 2008
Type-Defect
Priority-Medium
Milestone-Release9

Reported by daniel.r.kegel, Feb 03, 2008

The current snapshot algorithm has a factor
of 8 overhead in both blocks written and
seeks performed.  The problem and a design for
a first step towards a solution are described
in Dan Phillips' post from 12 Nov 2007,
http://groups.google.com/group/zumastor/msg/8838de35aa6bf255

Comment 1 by daniel.r.kegel, Mar 26, 2008

Dan P. posted untested code today to address part of this problem,
http://groups.google.com/group/zumastor/msg/21a9a3a281377972
He has volunteered to do at least part of this feature for 0.8.

Labels: Milestone-Release8

Comment 2 by jiahotcake, Apr 09, 2008

Change the issue summary to be more specific.

Summary: Reduce the overhead of bitmap updates during origin writes

Comment 3 by daniel.r.kegel, Apr 30, 2008

(No comment was entered for this change.)

Labels: -Milestone-Release8 Milestone-Release9

Comment 4 by daniel.r.kegel, May 21, 2008

Fix checked in, r1663.

Status: Fixed