Bady, Brant RBCM:EX wrote:
I am working in the area of archiving (in the true send of the word -
e.g. using the OAIS reference model) electronic data for long term
preservation and access. ZFS now makes magnetic disk arrays a bit more
suitable for that.
Part of the archiving process is to generate checksums (I happen to use
MD5), and store them with other metadata about the digital object in
order to verify data integrity and demonstrate the authenticity of the
digital object over time.
Wouldn’t it be helpful if there was a utility to access/read the
checksum data created by ZFS, and use it for those same purposes.
Would you want a single checksum per file, or the list of every checksum
for every block that the file referenced?
The second option might get unwieldy.
The first option - a meta-checksum if you like - would require some
interesting design.
James C. McPherson
--
Solaris kernel software engineer, system admin and troubleshooter
http://www.jmcp.homeunix.com/blog
Find me on LinkedIn @ http://www.linkedin.com/pub/2/1ab/967
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