Re: show/compare compression algorithm/level

>>> On 21/06/2019 19:53, Matus UHLAR - fantomas wrote:
>>>> is it possible when listing dar archive to show the
>>>> compression algorithm and level used for files?
>>>>
>>>> and when merging archives, e.g. creating decremental archive,
>>>> does dar detect the same file even if it's compressed using
>>>> different algorithm/level?

>> On 21.06.19 23:48, Denis Corbin wrote:
>>> dar -l <archive> -q
>>>
>>> will let you see the compression algorithm used, but not the
>>> compression level. For that you can use for example
>>> '--user-comment %c' at archive creation time (let you refer to
>>> the man page for this option details) and see what was the
>>> command line used to create the archive.

>On 23/06/2019 20:06, Matus UHLAR - fantomas wrote:
>> so, only one compression scheme can be used per archive?

On 24.06.19 19:41, Denis Corbin wrote:
>Yes for now: once a compression algorithm has been selected you can
>define which file to compress and which file not to try compressing.
>
>The archive format has room to have compression algorithm and
>compression level per file, but so far this has not been founded very
>useful.
>
>What is your use case for such feature?

for now, I'm interested because I have tried to create different backups
using different compression schemes (no big luck) and I was curious if it's
possible to make decremental archive from them without recompression.

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