Re: [Bug-xorriso] xorriso and Fedora livecd-tools

[Thomas Schmitt]

Hi,

if ever a bootable ISO is made with a data file that needs multiple
directory records, then the default setting of xorrisofs will trigger an
error event:

  $ xorriso -as mkisofs -o /dvdbuffer/test.iso -J 
/dvdbuffer/CentOS-7-x86_64-Everything-1708.iso
  ...
  xorriso : FAILURE : File exceeds size limit of 4294967295 bytes: 
'/dvdbuffer/CentOS-7-x86_64-Everything-1708.iso'
  xorriso : FAILURE : Grafting failed:  '/CentOS-7-x86_64-Everything-1708.iso' 
= '/dvdbuffer/CentOS-7-x86_64-Everything-1708.iso'
  libisofs: FAILURE : A file is bigger than supported by used standard
  xorriso : FAILURE : Failed to prepare session write run

which (with default abort threshold) causes the run to end prematurely
with non-zero exit value:

  xorriso : NOTE : -return_with SORRY 32 triggered by problem severity FAILURE
  $ echo $?
  32

This refusal happens unless the "used standard" is set to ISO 9660 Level 3
by
  -iso-level 3
or
  -iso-level 4

So if you omit the option -iso-level (or set it to 1 or 2) then no ISO can
emerge which would cause file size problems on handicapped operating systems.


Have a nice day :)

Thomas