ts678
March 27, 2024, 5:32pm
12
The --zip-compression-zip64 setting is described as follows:
--zip-compression-zip64
The zip64 format is required for files larger than 4GiB, use this flag to toggle it
Default value: “False”
Does this mean it’s needed for SOURCE files larger than 4GB or DESTINATION (dblock / Upload volume size) files larger than 4GB? Oh, is there a reason it’s NOT enabled by default?
Either way, we should consider updating the parameter description to clarify.
was a prior discussion, if anyone wants to get deep into the technicalities of Duplicati .zip files.
This topic tries to tie a number of things together with some detail while still being a concise read.
This is sort of a static view dealing in data items and transforms, without saying how code does it.
Channel Pipeline talks about the flow in the backup direction. Restore/recreate is less concurrent.
Database rebuild has some conceptual and table background, e.g. see brief linked summary.
This document was inspired by a wish for test tools to test backups faster or better than Duplicati.
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has more details on what’s in a .dlist
, best used when looking at one. Get a filelist.json
from a dlist file in an unencrypted backup (or decrypt an encrypted dlist, if you find that simpler).