Probelm when remastering

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05-26-2014, 06:18 AM
kokolisso

Probelm when remastering

Hello. I tried remaster knoppix, using this info: http://ftp.knoppix.net/wiki/Knoppix_Remastering_Howto I was interessed only in update openssl package, so only this was done in chroot, all ok, but when do to build the iso image this error occurs:

9] Blk# 165700, [ratio/avg. 48%/ 41%], avg.speed: 1504937 b/s, ETA: 24411s I: -input-charset not specified, using utf-8 (detected in locale settings)
File /media/sda1/knx/master/KNOPPIX/KNOPPIX is larger than 4GiB-1. -allow-limited-size was not specified. There is no way do represent this file size. Aborting. Finished!
Used time: 28 min. and 2 sec. The new ISO is stored in '/media/sda1/knx/remastered.iso' root@Microknoppix:/media/sda1/knx#

The knoppix used was 7.2.0, in a virtual machine, 3gb of ram and the partition /dev/sda1 was ext4 with 60 gb
Just for update openssl package should not be a reason for not be able of build the remaster, i mean in file space occuped, i use this in a usb with fat32, so, i need the 4gb file size limit. Whan can i do? Thanks

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05-26-2014, 07:48 AM
Werner P. Schulz

You cannot remaster the Knoppix DVD without deinstall some of the big applications. The size of the compressed filesystem KNOPPIX is already at the limit of 4GB and even little modifications will exceed this size. But why not use the flash disk install with an USB stick of 8GB at least?
05-26-2014, 02:32 PM
kokolisso

Hello. I have 8GB USB stick, but fat32 have 4Gb limit, for avoid the limit, the usb can be formatted in ext4, for example? Thanks

Quote:

Originally Posted by Werner P. Schulz

You cannot remaster the Knoppix DVD without deinstall some of the big applications. The size of the compressed filesystem KNOPPIX is already at the limit of 4GB and even little modifications will exceed this size. But why not use the flash disk install with an USB stick of 8GB at least?
05-26-2014, 05:21 PM
Werner P. Schulz

Have a look at Hard drive Installation

The simple way to use Knoppix is the "Flash disk install".
The tricky way is to use the "Poor man's install"; here you can use ext4, but this doesn't lift the limit of 4GB for the compressed file system KNOPPIX.
06-10-2014, 05:48 PM
EduAQA

I understand the workaround, but what i'm trying to understand is why remastering the original DVD 7.2 without any change on chroot, change the size to more than 4GB
06-10-2014, 06:42 PM
Werner P. Schulz

Code:

# Make the big compressed filesystem KNOPPIX genisoimage -input-charset ISO-8859-15 -R -l -D -V KNOPPIX_FS -quiet \ -no-split-symlink-components -no-split-symlink-fields \ -hide-rr-moved -cache-inodes $PFAD/knx/source/KNOPPIX \ | /usr/sbin/create_compressed_fs -q -B 65536 -t 8 -L 9 \ -f $PFAD/knx/isotemp - $PFAD/knx/master/KNOPPIX/KNOPPIX

The size of the compressed filesystem KNOPPIX depends on the compression level of "create_compressed_fs". Have a look about this with

Code:

create_compressed_fs --help

I've used in the script "-L 9". If you'll use "-L -2", the compression part takes many, many hours. And I don't know, which compression parameters K Knopper uses to get the best result of compression.
06-10-2014, 11:50 PM
EduAQA

Werner, I think we have an issue before the create_compressed_fs .
Just after finishing the step on script number 1 ... cp -rp /KNOPPIX/* $PFAD/knx/source/KNOPPIX, and running du on source and destination they have different size, source reports 9944892 and the target says 10911128, so I think is something related to links.
Maybe this is way when compress it turns big, probably because of duplicated files on target.
06-11-2014, 01:48 AM
EduAQA

tried with L 2, do diference either in time either in size ... how about -B, any influence on size?
06-11-2014, 06:38 AM
Werner P. Schulz

Quote:

tried with L 2, do diference either in time either in size

"-L -2" and not "-L 2"
06-11-2014, 07:27 PM
EduAQA

Tried -b and also "-L -2" ,without success, continue generating 4306MB
06-11-2014, 09:31 PM
Werner P. Schulz

Quote:

.. running du on source and destination they have different size, ..

The question is, what "du" calculates. If I use

Code:

du -sc ...

I've got 9944692 for '/KNOPPIX/' and 10812896 for '/media/sda1/knx/source/KNOPPIX/'. But if I've use

Code:

du -sc --apparent-size ...

I've got 9850347 for '/KNOPPIX/' and 9886877 for '/media/sda1/knx/source/KNOPPIX/'.

Also with

Code:

diff -q -r /KNOPPIX/ /media/sda1/knx/source/KNOPPIX/

I couldn't find any real difference.
06-13-2014, 07:57 PM
EduAQA

Werner, you are right, du is not the problem, I restart from the begging again and now it generated without error using -b on compress ( i think using -L -2, also should works). Probrably i did something wrong on the first test. About time using th default script I got 28 minutes and with -b i got 58 minutes (for compress part). I'm using a HP Proliant server with a six core xeon and 20GB of ram and SSA disks.
Thanks a lot for your help.