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Re: Large files truncated using xorriso 1.5.4 using zisofs v2


From: Dag Wieers
Subject: Re: Large files truncated using xorriso 1.5.4 using zisofs v2
Date: Wed, 9 Nov 2022 15:35:37 +0100

I need to add to this that the total size of the ISO does add up correctly with the compressed images.
So it appears the complete compressed files are inside the ISO regardless.

On Wed, 9 Nov 2022 at 15:02, Dag Wieers <dag.wieers@gmail.com> wrote:
Hi,

We see that when generating an ISO file with large docker images (one 4.1GB, another 22GB) the file sizes on the ISO are less than half in size, and the files in question, seem to be truncated.

It appears that these files in the ISO report the compressed size (so less than 50%) rather than the real size, only when the file is larger than 4GB.

We are using xorriso v1.5.4 on Ubuntu 22.04 using the following options:

    -zisofs default:version_2=as_needed
    -find /images -type f -name *.tar -pending_data -exec set_filter --zisofs --


Version information:

dag@builder:~/git/riu$ xorriso --version
xorriso 1.5.4 : RockRidge filesystem manipulator, libburnia project.

xorriso 1.5.4
ISO 9660 Rock Ridge filesystem manipulator and CD/DVD/BD burn program
Copyright (C) 2019, Thomas Schmitt <scdbackup@gmx.net>, libburnia project.
xorriso version   :  1.5.4
Version timestamp :  2021.01.30.150001
Build timestamp   :  -none-given-
libisofs   in use :  1.5.4  (min. 1.5.4)
libjte     in use :  2.0.0  (min. 2.0.0)
libburn    in use :  1.5.4  (min. 1.5.4)
libburn OS adapter:  internal GNU/Linux SG_IO adapter sg-linux
libisoburn in use :  1.5.4  (min. 1.5.4)
Provided under GNU GPL version 3 or later, due to libreadline license.
There is NO WARRANTY, to the extent permitted by law.


Original files:

dag@builder:~/git/riu$ ls -l build/images/
-rw------- 2 dag dag  4364767232 Feb  4  2022 foobar-1.2.3.tar
-rw------- 2 dag dag 22920109056 Feb  4  2022 foobaz-1.2.3.tar
-rw-rw-r-- 1 root root  1324893184 Oct 26 09:55 tensorboard-2.5.0.tar


On the mounted ISO:

dag@builder:~/git/riu$ ls -la iso/images/
-rw------- 1 root root  1750314367 Feb  4  2022 foobar-1.2.3.tar
-rw------- 1 root root 10410366725 Feb  4  2022 foobaz-1.2.3.tar
-rw-rw-r-- 1 root root  1324893184 Oct 26 09:55 tensorboard-2.5.0.tar


Thanks in advance,
--
Dag


--
Dag

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