Legacy Arq Forum

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1. 

   Fletcher
   Member

   On a new MacBook Air with Lion, Arq is not behaving as it did on my older laptop with Snow Leopard. It is backing up constantly, adding files every day even though the files have not been changed. A little nosing around revealed the surprising discovery that my backups have suddenly increased tremendously in size, going over my S3 budget and thus initiating the budget enforcement.

   I use Arq for one thing: backing up two Aperture libraries. One is 33.2 GB, the other is 4.3. Clearly, a budget of 40 GB should be fine -- except that suddenly, my Arq backup is 48.9 GB. Where has this extra 11.4 GB come from?

   Part of it, I find, comes from Arq duplicating an entire library in the backup, despite that library having had no changes whatsoever. But that only accounts for 4.3 GB of the extra. The rest I can't figure out.

   I am not interested in paying more to store duplicated photo libraries and other unknown, apparently giant files. Can anyone help me figure out why Arq is behaving so badly on Lion, and what can be done about it?

   Info: 2012 MacBook Air, OS X 10.7.4, Arq 2.8.2

   Posted 10 months ago #
2. 

   stefan
   Key Master

   Sorry for the slow reply. I respond much faster to email support requests (support@haystacksoftware.com).

   Arq presents each backup as the full set of files, but it doesn't actually store a full copy of the files every time. It stores basically the directory listings with pointers to the data. So, if a file hasn't changed, each backup will point to the same data in S3.

   I don't know how to reproduce the behavior you're describing.

   When Arq is backing up, if you click the "View Items Being Backed Up" button, does it list files that haven't changed?

   Also, if you look through the backup versions, in each one you can see which files/folders are added, modified, or deleted, which might help explain which files are changing and getting uploaded by Arq.

   Posted 9 months ago #

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