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Re: Some Debian package upgrades are corrupting rsync "quick check" backups



Hi,

I highly suspect this stems from packages' rules files supporting
reproducible builds.

The only way I see to solve this would be for the "reproducible builds"
infrastructure to hard-wire new timestamps at release-time of a new
package version.

Also: this is not limited to rsync. Basically any tool relying on
(mtime/file size) as a changed indicator is affected by this. Even if
the tool in question relied on (mtime/file size/inode number), "changed
checks" could be subverted in situations where changes are made to the
file directly instead of writing a new file and moving it into place
(thus retaining the inode number).


Cheers
Daniel

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