I have this ZFS box where I'm creating incremental snapshots, then piping them into RAR (4.2) for compression and encryption, and finally backing those files up remotely.
Thing is, RAR seems to ignore my setting to create volumes (i.e. a segmented archive) when doing so. I can't believe that this could be a limitation (can't see why feeding data via stdin would be any different from having RAR read data directly off the disk), so I'm thinking there's something else wrong with my approach.
Here's an example of me creating an archive:
zfs send filesystem@rev | rar a -m5 -md4096 -t -s -v5000000000b -ppassword -rr5 -sifilesystem@rev ~/firstname.lastname@example.org
Any ideas why this doesn't segment my archive into 5GB parts? Instead I get, say, one big 44GB rar file.