Maybe I am confused about the way that tar stores listed-incremental archives.
My understanding was that archive members could be of two forms:
-- Delete this file, which appeared in the full but disappeared for the
incremental dump.
-- Add/Replace this file, which is provided here in the archive.
But it seems that actually perhaps archive members are of two different forms:
-- Ignore this file, which appeared in the full and was unchanged for the
incremental
-- Add/Replace this file, which is provided here in the archive.
With the former format, it becomes possible to truly apply the "changes" made
in the incremental backup. But with the second format, it is impossible;
files which are listed in the full but should be deleted are simply not
mentioned in the incremental.
Is my (second) understanding correct?
--Ian
--
Zmanda: Open Source Data Protection and Archiving.
http://www.zmanda.com
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