Re: [Duplicity-talk] Is bzip2 really working?

[Darik Horn]

> Any tips on verifying that the compression is working or not working?

Create a duplicity backup, get one of the output files, and do this in a
terminal window:

 $ gpg --list-packets MyDuplicityBackupFile.gpg

The archive has been compressed with bzip2 if you see this line:

  :compressed packet: algo=3

The archive has been compressed with gzip if you see this line:

 :compressed packet: algo=2

Note that GPG does not compress some kinds of data even if you give the
--compress-algo parameter.

For example, you will not get a compressed packet line on an encrypted
tgz or zip file.  Similarly, GPG does not compress things like movie or
music files.

--
Darik Horn <address@hidden>