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[rdiff-backup-users] Re: more info on 25gig files
From: |
rsync2eran |
Subject: |
[rdiff-backup-users] Re: more info on 25gig files |
Date: |
Thu, 30 Jun 2005 17:37:11 +0300 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050513 Thunderbird/1.0.2 Fedora/1.0.2-1.3.3 Mnenhy/0.7.2.0 |
Hi,
Donovan Baarda wrote:
> There was a long discussion on the rsync lists about the best heuristic
> for blocksize and blocksum size (rsync also trims the strongsum size to
> make the signature smaller, and it was getting blocksum collisions on
> large files). I helped figure out the formula's for blocksize and
> blocksum size that rsync now uses.
There's a related issue we discussed a while ago:
One thing that's different between rsync and naive use of librsync (as
done by rdiff and, I think, rdiff-backup) is that the latter doesn't
have a strong full-size integrity check. With librsync's default 4-byte
checksums, using a small block size on a large file makes the
probability of silent corruption disturbingly non-negligible.
Eran
- [rdiff-backup-users] Re: more info on 25gig files,
rsync2eran <=
- [rdiff-backup-users] Re: more info on 25gig files, Donovan Baarda, 2005/07/01
- [rdiff-backup-users] Re: more info on 25gig files, rsync2eran, 2005/07/01
- [rdiff-backup-users] Re: more info on 25gig files, Donovan Baarda, 2005/07/01
- [rdiff-backup-users] Re: more info on 25gig files, rsync2eran, 2005/07/01
- [rdiff-backup-users] Re: more info on 25gig files, Donovan Baarda, 2005/07/01
- [rdiff-backup-users] Re: more info on 25gig files, rsync2eran, 2005/07/20
- [rdiff-backup-users] Re: more info on 25gig files, Donovan Baarda, 2005/07/06
- [rdiff-backup-users] Re: more info on 25gig files, rsync2eran, 2005/07/20
- [rdiff-backup-users] Re: more info on 25gig files, rsync2eran, 2005/07/20
- Re: [rdiff-backup-users] Re: more info on 25gig files, David Kempe, 2005/07/01