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While creating incremental backups is relatively simple (and can be automated, e.g. via rdiff-backup), in order to access a specific state of a file one first has to manually restore the backup, which is both not-simple and tedious if you need to browse through multiple states. So is there a FUSE which allows to transparently access previous states e.g. via some filename@2013-01-23 (the backup made at that date, if existing) or filename@{-2} (two backups ago) syntax while the current and backup files reside on arbitrary filesystems (including remote ones, e.g. nfs backups while the current state is on a local ext3)?

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(I know the suggested syntax yields ambiguities, I assume if a solution already exits, it will have solved this as well) – Tobias Kienzler Jan 23 '13 at 9:29
Other option would be to use backup solutions where the incremental backups are readily available like using btrfs, zfs, ddsnap, thin-provisionned lvm... – Stéphane Chazelas Jan 23 '13 at 9:55
@StephaneChazelas True indeed, but converting the filesystem is currently not an option, I'm afraid – Tobias Kienzler Jan 23 '13 at 9:58
up vote 2 down vote accepted
$ apt-cache search rdiff fuse
rdiff-backup-fs - Fuse filesystem for accessing rdiff-backup archives

(untested). http://code.google.com/p/rdiff-backup-fs/

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Looks interesting, thanks. Technically your answers deserves the check mark, though a more exhaustive one may steal it :-P – Tobias Kienzler Jan 23 '13 at 10:45

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