Duplicity: recommended value for --volsize?

backup duplicity

5,986

With such a large data set and a fast gigabit (which I assume is reliable), I would go for a larger volume size than the default of 25 MB. I would at least say 250 MB or maybe 700 MB (size of a CDROM, if you for some reason or other need to transfer backup to an optical medium).

In the past, duplicity had a bug that caused it to use large amounts of memory if you used large volumes, because it allocated buffers that increased along with the size of the volumes. This issue has now been fixed and you should be able to use larger volumes without problems.

I use 700 mb volumes myself for a ~3 TB backup set.

5,986

Vito Botta

I am a passionate developer with 10+ years commercial experience and 360° skills in the design, development and maintenance of modern, user centred as well as enterprise-scale web applications on both *nix and Microsoft platforms, with a strong interest in performance, scalability, security and search engine optimisation. My blog with tips and walkthroughs on web development with free and open source tools (such as Linux, Ruby, Rails, MySQL), performance & scalability, security, database, search engine optimisation.

Updated on September 18, 2022

Comments

Vito Botta almost 2 years

I am backing up ~800GB from a server to a NAS via Gigabit (destination is a share mounted on the server I need to backup). What value would you recommend for volsize?

Thanks
Eborbob almost 8 years

It seems like the bug mentioned here was fixed in 2007, so shouldn't be a problem even if your distro is a few versions behind!