[prev in list] [next in list] [prev in thread] [next in thread] 

List:       openjdk-jigsaw-dev
Subject:    Re: Jigsaw and containers
From:       dalibor topic <dalibor.topic () oracle ! com>
Date:       2017-08-31 21:42:45
Message-ID: 84cb453d-efb5-c923-1fd9-37184e9c564a () oracle ! com
[Download RAW message or body]



On 31.08.2017 23:05, Daniel Latrémolière wrote:
> This is easy to be seen in containers, where the file system is usually the merge \
> of multiples layers, like described in this image (from Docker [3]): \
> https://docs.docker.com/engine/userguide/storagedriver/images/overlay_constructs.jpg
>  Then having multiple files each with a specified set of modules allow some files \
> to be shared between multiples containers. When we have all modules only in a \
> single file, this file will never be the same between all containers and can never \
> be shared. Then sharing common parts requires to convert non-shared modules in \
> non-optimized modular JAR (blurring target of Jigsaw).

I believe that this behavior can differ from storage driver to storage 
driver. OverlayFS works on the file level, while the storage drivers for 
ZFS, btrfs, devicemapper etc. seem to work on the block level.

cheers,
dalibor topic

-- 
<http://www.oracle.com> Dalibor Topic | Principal Product Manager
Phone: +494089091214 <tel:+494089091214> | Mobile: +491737185961
<tel:+491737185961>

ORACLE Deutschland B.V. & Co. KG | Kühnehöfe 5 | 22761 Hamburg

ORACLE Deutschland B.V. & Co. KG
Hauptverwaltung: Riesstr. 25, D-80992 München
Registergericht: Amtsgericht München, HRA 95603

Komplementärin: ORACLE Deutschland Verwaltung B.V.
Hertogswetering 163/167, 3543 AS Utrecht, Niederlande
Handelsregister der Handelskammer Midden-Niederlande, Nr. 30143697
Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher

<http://www.oracle.com/commitment> Oracle is committed to developing
practices and products that help protect the environment


[prev in list] [next in list] [prev in thread] [next in thread]